Cavity Structure for Accommodating Cooking Food and Cooking Device

Abstract

The invention discloses a cavity structure for accommodating cooking food and a cooking device, and relates to the technical field of structures of cooking devices. The cavity structure includes a cavity assembly, wherein the cavity assembly at least includes a first cavity and a second cavity with each being provided with a lateral opening, and the first cavity and the second cavity are spaced and arranged independently. The cavity structure for accommodating the cooking food and the cooking device applying the cavity structure in the invention have the characteristics of simple and reasonable structure, convenience for storage, high material utilization ratio and production efficiency, low part rejection rate, and high dismounting/mounting speed.

Claims

1. A cavity structure for accommodating cooking food, comprising a cavity assembly, and characterized in that wherein the cavity assembly at least comprises a first cavity (1) and a second cavity (8) with each being provided with a lateral opening, and the first cavity (1) and the second cavity (8) are spaced and arranged independently; the first cavity (1) comprises a top plate (1.1) of the first cavity, a left side wall plate (1.2) of the first cavity, a right side wall plate (1.3) of the first cavity, a bottom plate (1.4) of the first cavity and a rear plate (1.5) of the first cavity; the second cavity (8) comprises a top plate (8.1) of the second cavity, a left side wall plate (8.2) of the second cavity, a right side wall plate (8.3) of the second cavity, a bottom plate (8.4) of the second cavity and a rear plate (8.5) of the second cavity; wherein the top plate (1.1) of the first cavity and the bottom plate (1.4) of the first cavity are both detachably connected with the left side wall plate (1.2) of the first cavity and the right side wall plate (1.3) of the first cavity, and the rear plate (1.5) of the first cavity is detachably connected with the top plate (1.1) of the first cavity, the bottom plate (1.4) of the first cavity, the left side wall plate (1.2) of the first cavity and the right side wall plate (1.3) of the first cavity; and the top plate (8.1) of the second cavity and the bottom plate (8.4) of the second cavity are both detachably connected with the left side wall plate (8.2) of the second cavity and the right side wall plate (8.3) of the second cavity, and the rear plate (8.5) of the second cavity is detachably connected with the top plate (8.1) of the second cavity, the bottom plate (8.4) of the second cavity, the left side wall plate (8.2) of the second cavity and the right side wall plate (8.3) of the second cavity.

2. The cavity structure according to claim 1, characterized in that a first left arc-shaped part (1.12) and a first right arc-shaped part (1.13) which are bent downwards are respectively and correspondingly arranged at left and right sides of the top plate (1.1) of the first cavity, and the first left arc-shaped part (1.12) and the first right arc-shaped part (1.13) are respectively and correspondingly connected with an upper edge of the left side wall plate (1.2) of the first cavity and an upper edge of the right side wall plate (1.3) of the first cavity.

3. The cavity structure according to claim 1, characterized in that a second left arc-shaped part (1.42) and a second right arc-shaped part (1.43) which are bent upwards are respectively arranged at left and right sides of the bottom plate (1.4) of the first cavity, and the second left arc-shaped part (1.42) and the second right arc-shaped part (1.43) are respectively and correspondingly connected with a lower edge of the left side wall plate (1.2) of the first cavity and a lower edge of the right side wall plate (1.3) of the first cavity.

4. The cavity structure according to claim 3, characterized in that the position where the lower edge of the left side wall plate (1.2) of the first cavity is connected with the second left arc-shaped part (1.42) is located above the middle of the second left arc-shaped part (1.42); the position where the lower edge of the right side wall plate (1.3) of the first cavity is connected with the second right arc-shaped part (1.43) is located above the middle of the second right arc-shaped part (1.43); and the bending radius of each of the second left arc-shaped part (1.42) and the second right arc-shaped part (1.43) is R, wherein 10 mm≤R≤40 mm.

5. The cavity structure according to claim 1, characterized in that a first opening (1.41) is formed, in a thickness direction, in the bottom plate (1.4) of the first cavity, and several screw holes and several slots (1.44) are further formed in circumferential edges of the first opening (1.41) in the bottom plate (1.4) of the first cavity; and the bottom plate (1.4) of the first cavity is provided with a first oil baffle plate (1.6) for covering the first opening (1.41), pins (1.64) are arranged in a front edge of the first oil baffle plate (1.6) and are matched with the slots (1.44) in an insertion manner, and screw holes are further formed in left and right edges of the first oil baffle plate (1.6) and are arranged corresponding to the screw holes in the bottom plate (1.4) of the first cavity.

6. The cavity structure according to claim 1, characterized in that a middle support plate (3) is arranged below the bottom plate (1.4) of the first cavity, first side wall plates (3.1) extending upwards and vertically are arranged on left and right edges of the middle support plate (3), and upper edges of the two first side wall plates (3.1) are respectively and correspondingly connected with the lower edge of the left side wall plate (1.2) of the first cavity and the lower edge of the right side wall plate (1.3) of the first cavity.

7. The cavity structure according to claim 6, characterized in that the cavity structure further comprises a first part supporting plate (2) located at the rear of the first cavity (1); and a first square connecting piece (1.52) and a second square connecting piece (1.53) are respectively and correspondingly arranged on left and right edges of the rear plate (1.5) of the first cavity, the first square connecting piece (1.52) and the second square connecting piece (1.53) each comprises a front side wall (1.54) and a rear side wall (1.55), the front side wall (1.54) of the first square connecting piece (1.52) and the front side wall (1.54) of the second square connecting piece (1.53) are respectively and correspondingly connected with the right and left edges of the rear plate (1.5) of the first cavity, and the rear side wall (1.55) of the first square connecting piece (1.52) and the rear side wall (1.55) of the second square connecting piece (1.53) are respectively and correspondingly connected with right and left edges of the first part supporting plate (2).

8. The cavity structure according to claim 7, characterized by further comprising a first strip-shaped connecting piece (16) and a second strip-shaped connecting piece (17), wherein the first strip-shaped connecting piece (16) and the second strip-shaped connecting piece (17) are both connected with the first part supporting plate (2); and the first square connecting piece (1.52) and the second square connecting piece (1.53) are each provided with a front side snap hook (1.56) and a rear side snap hook (1.57), buckle holes (2.2) are respectively formed in positions, corresponding to the rear side snap hook (1.57) of the first square connecting piece (1.52) and the rear side snap hook (1.57) of the second square connecting piece (1.53), on the first part supporting plate (2), and the rear side snap hooks (1.57) of the first square connecting piece (1.52) and the second square connecting piece (1.53) are both buckled in the corresponding buckle holes (2.2).

9. The cavity structure according to claim 7, characterized by further comprising a first left heat insulation plate (4) and a first right heat insulation plate (5) respectively arranged at left and right sides of the first cavity (1), wherein a rear edge of the first left heat insulation plate (4) and a rear edge of the first right heat insulation plate (5) are respectively and correspondingly connected with the left and right edges of the first part supporting plate (2), and a lower edge of the first left heat insulation plate (4) and a lower edge of the first right heat insulation plate (5) are respectively and correspondingly connected with lower parts of the first side wall plates (3.1) on the left and right edges of the middle support plate (3); and an upper heat insulation plate (7) is arranged above the top plate (1.1) of the first cavity, left, right, front and rear edges of the upper heat insulation plate (7) extend downwards to form second side wall plates (7.1), the second side wall plates (7.1) on the left and right edges of the upper heat insulation plate (7) are respectively and correspondingly connected with an upper edge of the first left heat insulation plate (4) and an upper edge of the first right heat insulation plate (5), and the second side wall plate (7.1) on the rear edge of the upper heat insulation plate (7) is connected with an upper edge of the first part supporting plate (2).

10. The cavity structure according to claim 1, characterized in that third turning edges (1.45) are respectively arranged on left and right edges of the bottom plate (1.4) of the first cavity, and screw holes are formed in the third turning edges (1.45); fourth turning edges (1.8) are respectively arranged on the upper and lower edges of the left side wall plate (1.2) of the first cavity and the right side wall plate (1.3) of the first cavity, and screw holes are formed in the fourth turning edges (1.8); and the third turning edges (1.45) are fixedly connected with the fourth turning edges (1.8) by screws.

11. A cavity structure for accommodating cooking food, comprising a cavity assembly, and characterized in that the cavity assembly at least comprises a first cavity (1) and a second cavity (8) with each being provided with a forward opening, and the first cavity (1) and the second cavity (8) are spaced and arranged independently; the first cavity (1) comprises a top plate (1.1) of the first cavity, a left side wall plate (1.2) of the first cavity, a right side wall plate (1.3) of the first cavity, a bottom plate (1.4) of the first cavity and a rear plate (1.5) of the first cavity; and the second cavity (8) comprises a top plate (8.1) of the second cavity, a left side wall plate (8.2) of the second cavity, a right side wall plate (8.3) of the second cavity, a bottom plate (8.4) of the second cavity and a rear plate (8.5) of the second cavity.

12. The cavity structure according to claim 11, characterized by further comprising a bottom support plate (9), wherein third side wall plates (9.1) extending upwards and vertically are arranged on left and right edges of the bottom support plate (9), and the bottom support plate (9) is respectively and correspondingly connected with a lower edge of the left side wall plate (8.2) of the second cavity and a lower edge of the right side wall plate (8.3) of the second cavity through the two third side wall plates (9.1) on the left and right edges.

13. The cavity structure according to claim 12, characterized by further comprising a second part supporting plate (13) as well as a second left heat insulation plate (10) and a second right heat insulation plate (11) respectively arranged at left and right sides of the second cavity (8); the second left heat insulation plate (10) and the second right heat insulation plate (11) are respectively and correspondingly connected with left and right edges of the second part supporting plate (13), and a lower edge of the second left heat insulation plate (10) and a lower edge of the second right heat insulation plate (11) are respectively and correspondingly connected with lower parts of the two third side wall plates (9.1) on the left and right edges of the bottom support plate (9); and a middle heat insulation plate (14) is arranged above the top plate (8.1) of the second cavity, left, right, front and rear edges of the middle heat insulation plate (14) extend downwards to form fourth side wall plates (14.1), the two fourth side wall plates (14.1) on the left and right edges of the middle heat insulation plate (14) are respectively and correspondingly connected with an upper edge of the second left heat insulation plate (10) and an upper edge of the second right heat insulation plate (11), and the fourth side wall plate (14.1) on the rear edge of the middle heat insulation plate (14) is connected with an upper edge of the second part supporting plate (13).

14. The cavity structure according to claim 11, characterized by further comprising a housing bottom plate (15), a housing rear plate (18), the bottom support plate (9), a first part supporting plate (2), the second part supporting plate (13), a first strip-shaped connecting piece (16) and a second strip-shaped connecting piece (17), wherein the bottom support plate (9) is located below the bottom plate (8.4) of the second cavity, the first part supporting plate (2) is arranged at the rear of the first cavity (1), the second part supporting plate (13) is arranged at the rear of the second cavity (8), the housing bottom plate (15) is located below the bottom support plate (9), and a rear edge of the housing bottom plate (15) is connected with a lower edge of the second part supporting plate (13); and sixth side wall plates (16.1) are arranged on the first strip-shaped connecting piece (16) and the second strip-shaped connecting piece (17), the sixth side wall plates (16.1) on the first strip-shaped connecting piece (16) and the second strip-shaped connecting piece (17) are respectively and correspondingly connected with the first part supporting plate (2) and the second part supporting plate (13), the housing rear plate (18) is located at the rears of the first part supporting plate (2) and the second part supporting plate (13), and left and right edges of the housing rear plate (18) are respectively and correspondingly connected with the first strip-shaped connecting piece (16) and the second strip-shaped connecting piece (17).

15. The cavity structure according to claim 13, characterized in that the first cavity (1) and the second cavity (8) are respectively and correspondingly provided with a first front plate (19) and a second front plate (20), a middle support plate (3) is arranged below the bottom plate (1.4) of the first cavity, the bottom support plate (9) is arranged below the bottom plate (8.4) of the second cavity, an upper heat insulation plate (7) is arranged above the top plate (1.1) of the first cavity, an upper edge of the first front plate (19) is connected with a front edge of the upper heat insulation plate (7), a lower edge of the first front plate (19) is connected with a front edge of the middle support plate (3), an upper edge of the second front plate (20) is connected with the front edge of the middle heat insulation plate (14), and a lower edge of the second front plate (20) is connected with a front edge of the bottom support plate (9).

16. The cavity structure according to claim 11, characterized in that the first part supporting plate (2) is arranged at the rear of the first cavity (1), the middle heat insulation plate (14) is arranged above the top plate (8.1) of the second cavity, a support frame (21) is arranged above the rear edge of the middle heat insulation plate (14), and a supporting surface (21.1) is arranged on the support frame (21), wherein the supporting surface (21.1) is in contact with a bottom edge of the first part supporting plate (2).

17. The cavity structure according to claim 14, characterized by further comprising a left housing side plate (22) and a right housing side plate (23), wherein the upper heat insulation plate (7) is arranged above the top plate (1.1) of the first cavity, a third part supporting plate (24) is arranged above the upper heat insulation plate (7), seventh side wall plates (24.1) extending upwards and vertically are arranged on left and right edges of the third part supporting plate (24), rear edges of the two seventh side wall plates (24.1) are respectively and correspondingly connected with the first strip-shaped connecting piece (16) and the second strip-shaped connecting piece (17), upper edges of the two seventh side wall plates (24.1) are respectively and correspondingly connected with an upper edge of the left housing side plate (22) and an upper edge of the right housing side plate (23), and a rear edge of the left housing side plate (22) and a rear edge of the right housing side plate (23) are respectively and correspondingly connected with the first strip-shaped connecting piece (16) and the second strip-shaped connecting piece (17).

18. A cooking device, comprising a cavity assembly, and characterized in that the cavity assembly at least comprises a first cavity (1) and a second cavity (8) with each being provided with a forward opening, and the first cavity (1) and the second cavity (8) are spaced up and down and are independent from each other; the first cavity (1) comprises a top plate (1.1) of the first cavity, a left side wall plate (1.2) of the first cavity, a right side wall plate (1.3) of the first cavity, a bottom plate (1.4) of the first cavity and a rear plate (1.5) of the first cavity; the second cavity (8) comprises a top plate (8.1) of the second cavity, a left side wall plate (8.2) of the second cavity, a right side wall plate (8.3) of the second cavity, a bottom plate (8.4) of the second cavity and a rear plate (8.5) of the second cavity; and first heating apparatuses (25) and hot air assemblies (26) are both arranged inside the first cavity (1) and the second cavity (8).

19. The cooking device according to claim 18, characterized in that the first heating apparatuses (25) are both arranged on top positions inside the first cavity (1) and the second cavity (8), and second heating apparatuses (27) are further arranged below the first cavity (1) and the second cavity (8); and the first heating apparatuses (25) and the second heating apparatuses (27) are any one or a combination of electric heating tubes (28) and gas burners (29).

20. The cooking device according to claim 19, characterized in that the first cavity (1) and the second cavity (8) have different heights; and the number and sizes of the hot air assemblies (26) in the first cavity (1) are different from the number and sizes of the hot air assemblies (26) in the second cavity (8).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG. 1 is a schematic diagram showing an assembly structure of a first cavity, a second cavity and each plate of the cavities in an embodiment of the present invention;

[0063] FIG. 2 is a schematic diagram showing an assembly structure, viewed from another angle, of a first cavity, a second cavity and each plate of the cavities in an embodiment of the present invention;

[0064] FIG. 3 is a schematic diagram showing an exploded structure, viewed from a first angle, of a first cavity, a second cavity and each plate of the cavities in an embodiment of the present invention;

[0065] FIG. 4 is a schematic diagram showing an exploded structure, viewed from a second angle, of a first cavity, a second cavity and each plate of the cavities in an embodiment of the present invention;

[0066] FIG. 5 is an enlarged schematic diagram showing a part A in FIG. 4;

[0067] FIG. 6 is a schematic diagram showing an assembly structure of a first cavity in an embodiment of the present invention;

[0068] FIG. 7 is a schematic diagram showing an exploded structure, viewed from a third angle, of a first cavity in an embodiment of the present invention;

[0069] FIG. 8 is a schematic diagram showing an exploded structure, viewed from a fourth angle, of a first cavity in an embodiment of the present invention;

[0070] FIG. 9 is an enlarged schematic diagram showing a part B in FIG. 8;

[0071] FIG. 10 is a partial section view of a first cavity in an embodiment of the present invention;

[0072] FIG. 11 is an enlarged schematic diagram showing a part C in FIG. 10;

[0073] FIG. 12 is a schematic diagram showing an exploded structure of a first cavity and a second cavity in an embodiment of the present invention;

[0074] FIG. 13 is a schematic diagram showing a structure of a bottom plate of the first cavity in an embodiment of the present invention;

[0075] FIG. 14 is an enlarged schematic diagram showing a part D in FIG. 13;

[0076] FIG. 15 is a schematic diagram showing an internal structure of a first cooking device in an embodiment of the present invention;

[0077] FIG. 16 is a partial schematic diagram showing a first cooking device in an embodiment of the present invention;

[0078] FIG. 17 is a schematic diagram showing an internal structure of a second cooking device in an embodiment of the present invention; and

[0079] FIG. 18 is a partial schematic diagram showing a second cooking device in an embodiment of the present invention.

[0080] Meanings of reference numerals in the accompanying drawings are described as follows:

[0081] 1, first cavity; 1.1, top plate of first cavity; 1.11, first boss; 1.12, first left arc-shaped part; 1.13, first right arc-shaped part; 1.14, first turning edge; 1.2, left side wall plate of first cavity; 1.3, right side wall plate of first cavity; 1.4, bottom plate of first cavity; 1.41, first opening; 1.42, second left arc-shaped part; 1.43, second right arc-shaped part; 1.44, slot; 1.45, third turning edge; 1.5, rear plate of first cavity; 1.51, second turning edge; 1.52, first square connecting piece; 1.53, second square connecting piece; 1.54, front side wall; 1.55, rear side wall; 1.56, front side snap hook; 1.57, rear side snap hook; 1.6, first oil baffle plate; 1.61, second boss; 1.62, second opening; 1.63, third opening; 1.64, pin; 1.7, first heating tube cover; 1.71, fifth turning edge; 1.8, fourth turning edge; 2, first part supporting plate; 2.1, sixth turning edge; 2.2, buckle hole; 3, middle support plate; 3.1, first side wall plate; 3.2, seventh turning edge; 4, first left heat insulation plate; 5, first right heat insulation plate; 6, eighth turning edge; 7, upper heat insulation plate; 7.1, second side wall plate; 8, second cavity; 8.1, top plate of second cavity; 8.2, left side wall plate of second cavity; 8.3, right side wall plate of second cavity; 8.4, bottom plate of second cavity; 8.5, rear plate of second cavity; 8.51, third square connecting piece; 8.52, fourth square connecting piece; 8.6, second oil baffle plate; 8.7, second heating tube cover; 9, bottom support plate; 9.1, third side wall plate; 9.2, ninth turning edge; 10, second left heat insulation plate; 11, second right heat insulation plate; 12, tenth turning edge; 13, second part supporting plate; 13.1, eleventh turning edge; 14, middle heat insulation plate; 14.1, fourth side wall plate; 15, housing bottom plate; 15.1, fifth side wall plate; 16, first strip-shaped connecting piece; 16.1, sixth side wall plate; 17, second strip-shaped connecting piece; 18, housing rear plate; 19, first front plate; 19.1, twelfth turning edge; 20, second front plate; 21, support frame; 21.1, supporting surface; 22, left housing side plate; 23, right housing side plate; 24, third part supporting plate; 24.1, seventh side wall plate; 24.2, thirteenth turning edge; 25, first heating apparatus; 26, hot air assembly; 27, second heating apparatus; 28, electric heating tube; 29, gas burner; 30, reflecting cover; 30.1, fixed protrusion; 31; blower; 32, protective cover; 32.1, air outlet; and 32.2, air inlet.

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

[0082] In order to achieve better understanding and implementation, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0083] In the descriptions of the present invention, it should be noted that directional or positional relationships indicated by terms such as “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” are based on directional or positional relationships as shown in the accompanying drawings, and are only for the purposes of facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the referred apparatus or element has to have a specific direction or be constructed and operated in the specific direction, and therefore, they cannot be regarded as limitations on the present invention.

[0084] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by the skilled in the art of the present invention. Herein, the terms used in the specification of the present invention are only for the purpose of describing specific embodiments, rather than limiting the present invention.

Embodiment 1

[0085] Referring to FIG. 1 to FIG. 14, the present invention discloses a cavity structure for accommodating cooking food, which may be used in an oven. The cavity structure includes a cavity assembly, wherein the cavity assembly at least includes a first cavity 1; the first cavity 1 includes a top plate 1.1 of the first cavity, a left side wall plate 1.2 of the first cavity, a right side wall plate 1.3 of the first cavity, a bottom plate 1.4 of the first cavity and a rear plate 1.5 of the first cavity, wherein the top plate 1.1 of the first cavity is located above the bottom plate 1.4 of the first cavity, the rear plate 1.5 of the first cavity is located at rear sides of the top plate 1.1 of the first cavity, the left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity and the bottom plate 1.4 of the first cavity, the top plate 1.1 of the first cavity and the bottom plate 1.4 of the first cavity are both detachably connected with the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity, and the rear plate 1.5 of the first cavity is detachably connected with the top plate 1.1 of the first cavity, the bottom plate 1.4 of the first cavity, the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity; and therefore, the top plate 1.1 of the first cavity, the left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity, the bottom plate 1.4 of the first cavity and the rear plate 1.5 of the first cavity enclose to form a semi-enveloping cavity structure having a forward opening.

[0086] The cavity assembly further includes a second cavity 8; the second cavity 8 includes a top plate 8.1 of the second cavity, a left side wall plate 8.2 of the second cavity, a right side wall plate 8.3 of the second cavity, a bottom plate 8.4 of the second cavity and a rear plate 8.5 of the second cavity; the top plate 8.1 of the second cavity is located above the bottom plate 8.4 of the second cavity, the rear plate 8.5 of the second cavity is located at rear sides of the top plate 8.1 of the second cavity, the left side wall plate 8.2 of the second cavity, the right side wall plate 8.3 of the second cavity and the bottom plate 8.4 of the second cavity, the top plate 8.1 of the second cavity and the bottom plate 8.4 of the second cavity are both detachably connected with the left side wall plate 8.2 of the second cavity and the right side wall plate 8.3 of the second cavity, and the rear plate 8.5 of the second cavity is detachably connected with the top plate 8.1 of the second cavity, the bottom plate 8.4 of the second cavity, the left side wall plate 8.2 of the second cavity and the right side wall plate 8.3 of the second cavity; and therefore, the top plate 8.1 of the second cavity, the left side wall plate 8.2 of the second cavity, the right side wall plate 8.3 of the second cavity, the bottom plate 8.4 of the second cavity and the rear plate 8.5 of the second cavity enclose to form another semi-enveloping cavity structure having a forward opening.

[0087] Specifically, by adopting such a cavity structure provided with the first cavity 1 and the second cavity 8, more food can be roasted at the same time, so that the cooking efficiency is improved; in addition, the top plate 1.1 of the first cavity and the top plate 8.1 of the second cavity are universal when in assembly due to the same size, structure and shape, the bottom plate 1.4 of the first cavity and the bottom plate 8.4 of the second cavity are universal when in assembly due to the same size, structure and shape, the left side wall plate 1.2 of the first cavity and the left side wall plate 8.2 of the second cavity are universal when in assembly due to the same size, structure and shape, and the right side wall plate 1.3 of the first cavity and the right side wall plate 8.3 of the second cavity are universal when in assembly due to the same size, structure and shape, so that stamping dies and devices required during production can be reduced, it is convenient to schedule a production plan, and the material utilization ratio is high.

[0088] Further, specifically, the first cavity 1 is located above the second cavity 8, and the first cavity 1 and the second cavity 8 are spaced and arranged independently, “independent” means that the first cavity 1 does not communicate with the second cavity 8 and all the plates for enclosing the first cavity 1 and all the plates for enclosing the second cavity 8 are not used in common. Therefore, with such a configuration, the phenomenon of stronger heat conduction between the first cavity 1 and the second cavity 8 due to the sharing of the plates can be avoided, to reduce mutual interference between the temperatures of the two cavities, which is beneficial for independent working of the different cavities, and thus, the insides of the first cavity 1 and the second cavity 8 may be independently heated at different temperatures, so that the cooking mode is diversified.

[0089] Referring to FIG. 6 to FIG. 8, a U-shaped first boss 1.11 is arranged in the middle of the top plate 1.1 of the first cavity, and left and right sides of the first boss 1.11 are respectively provided with a first left arc-shaped part 1.12 and a first right arc-shaped part 1.13 which are bent downwards (that is, in a direction facing the bottom plate 1.4 of the first cavity).

[0090] A first opening 1.41 is formed in the middle of the bottom plate 1.4 of the first cavity. Specifically, the first opening 1.41 penetrates through the bottom plate 1.4 of the first cavity in a thickness direction of the bottom plate 1.4 of the first cavity, a second left arc-shaped part 1.42 and a second right arc-shaped part 1.43 which are bent upwards (that is, in a direction facing the top plate 1.1 of the first cavity) are respectively arranged at left and right sides of the first opening 1.41, several screw holes (unmarked in the figures) and several slots 1.44 are further formed in the bottom plate 1.4 of the first cavity. Specifically, the screw holes and the slots 1.44 are located in circumferential edges of the first opening 1.41.

[0091] During connection, upper, lower, left and right edges of the rear plate 1.5 of the first cavity are respectively and correspondingly connected with a rear edge of the top plate 1.1 of the first cavity, a rear edge of the bottom plate 1.4 of the first cavity, a rear edge of the left side wall plate 1.2 of the first cavity and a rear edge of the right side wall plate 1.3 of the first cavity, left and right edges of the top plate 1.1 of the first cavity are respectively and correspondingly connected with an upper edge of the left side wall plate of the first cavity 1 and an upper edge of the right side wall plate 1.3 of the first cavity, and left and right edges of the bottom plate 1.4 of the first cavity are respectively and correspondingly connected with a lower edge of the left side wall plate 1.2 of the first cavity and a lower edge of the right side wall plate 1.3 of the first cavity.

[0092] Specifically, first turning edges 1.14 are respectively arranged on the left, right and rear edges of the top plate 1.1 of the first cavity, and screw holes are formed in the first turning edges 1.14; second turning edges 1.51 are respectively arranged on the upper, lower, left and right edges of the rear plate 1.5 of the first cavity, and screw holes are formed in the second turning edges 1.51; third turning edges 1.45 are respectively arranged on the left, right and rear edges of the bottom plate 1.4 of the first cavity, and screw holes are formed in the third turning edges 1.45; fourth turning edges 1.8 are arranged on the upper, lower and rear edges of the left side wall plate 1.2 and the right side wall plate 1.3 of the first cavity, screw holes are formed in the fourth turning edges 1.8, and the screw holes in the third turning edges 1.45 are arranged corresponding to the screw holes in the first turning edges 1.14, the second turning edges 1.51 and the fourth turning edges 1.8; the upper, lower, left and right edges of the rear plate 1.5 of the first cavity are respectively and correspondingly connected with the first turning edge 1.14 on the rear edge of the top plate 1.1 of the first cavity, the third turning edge 1.45 on the rear edge of the bottom plate 1.4 of the first cavity and the fourth turning edges 1.8 on the rear edges of the left side wall plate 1.2 and the right side wall plate 1.3 of the first cavity through the second turning edges 1.51; the left and right edges of the top plate 1.1 of the first cavity are respectively and correspondingly connected with the fourth turning edges 1.8 on the upper edges of the left side wall plate 1.2 and the right side wall plate 1.3 of the first cavity through the first turning edges 1.14; the left and right edges of the bottom plate 1.4 of the first cavity are respectively and correspondingly connected with the fourth turning edges 1.8 on the lower edges of the left side wall plate 1.2 and the right side wall plate 1.3 of the first cavity through the third turning edges 1.45; and the first turning edges 1.14, the second turning edges 1.51, the third turning edges 1.45 and the fourth turning edges 1.8 are respectively fixedly connected in a manner that screws penetrate through the screw holes.

[0093] The bottom plate 1.4 of the first cavity is connected with the left side wall plate 1.2 of the first cavity through the third turning edges 1.45 and the fourth turning edges 1.8 by screws, the screws may not penetrate through the left side wall plate 1.2 of the first cavity, and therefore, the screws in the structure provided by the present invention cannot damage a coating on an inner surface of the left side wall plate 1.2 of the first cavity. Moreover, a middle support plate 3 may also be connected with the third turning edges 1.45 by turning edges of the middle support plate 3, thereby achieving an effect that the middle support plate 3 supports against the first cavity 1.

[0094] Referring to FIG. 13 to FIG. 14, further, specifically, the position where the lower edge of the left side wall plate 1.2 of the first cavity is connected with the second left arc-shaped part 1.42 is located above the middle of the second left arc-shaped part 1.42; and

[0095] the position where the lower edge of the right side wall plate 1.3 of the first cavity is connected with the second right arc-shaped part 1.43 is located above the middle of the second right arc-shaped part 1.43.

[0096] Specifically, the second left arc-shaped part 1.42 and the second right arc-shaped part 1.43 each are ¼ of a circle.

[0097] With such a configuration, grease in the cavities can be prevented from leaking outwards, the difficulty in clearing and maintaining is lowered, and convenience is brought for clearing.

[0098] The bending radius of each of the second left arc-shaped part 1.42 and the second right arc-shaped part 1.43 is R, wherein 10 mm≤R≤40 mm.

[0099] With such a configuration, stress concentration at corners can be reduced, a phenomenon of deformation in presence after the bottom plates of the cavities are connected with the left side wall plates and the right side wall plates is avoided, and the structural stability is improved.

[0100] Referring to FIG. 6 to FIG. 12, the first cavity 1 further includes a first oil baffle plate 1.6 arranged on the bottom plate 1.4 of the first cavity, and the second cavity 8 further includes a second oil baffle plate 8.6 arranged on the bottom plate 8.4 of the second cavity.

[0101] A first heating tube cover 1.7 may also be arranged in the first cavity 1, and a second heating tube cover 8.7 may also be arranged in the second cavity 8.

[0102] The first oil baffle plate 1.6 is arranged above the bottom plate 1.4 of the first cavity, and a second boss 1.61 upwards protruding is arranged in the middle of the first oil baffle plate 1.6; and pins 1.64, corresponding to the slots 1.44, are arranged at a front edge of the first oil baffle plate 1.6, screw holes are respectively formed in left and right edges of the first oil baffle plate 1.6, and the screw holes correspond to the screw holes, formed in the circumference of the first opening 1.41, in the bottom plate 1.4 of the first cavity.

[0103] For a conventional oil baffle plate structure 1.6, the screw holes are formed in the innermost edge, and therefore, during mounting, it is not easy for a person to touch the screw holes with a hand, it is not easy for the person to observe the screw holes, and it is not easy to dismount the first oil baffle plate 1.6. In the present invention, by the above settings, the screw holes are formed in the left and right edges of the first oil baffle plate 1.6, further, practically, the screw holes may be formed in middle positions on the left and right edges of the first oil baffle plate 1.6, and the pins 1.64 inserted into the slots 1.44 are arranged in the front side, so that it is easy for the person to touch screws with a hand, it is convenient for the person to observe and dismount the screws to take out the first oil baffle plate 1.6 to be cleaned, and it is also convenient to mount and fix the first oil baffle plate 1.6.

[0104] The first heating tube cover 1.7 is arranged below the bottom plate 1.4 of the first cavity and is arranged to be recessed downwards. Specifically, fifth turning edges 1.71 are respectively arranged on the left and right edges of the first heating tube cover 1.7, and screw holes are formed in the fifth turning edges 1.71.

[0105] Further, a second opening 1.62 and a third opening 1.63 may be respectively arranged in left and right sides of the second boss 1.61, and the second opening 1.62 and the third opening 1.63 are mainly used for circulation of hot air to provide heat for the insides of the cavities.

[0106] During connection, the first oil baffle plate 1.6 is inserted into the slots 1.44 through the pins 1.64, is fixed in the middle of the bottom plate 1.4 of the first cavity by screws and is located above the first opening 1.41, and the first heating tube cover 1.7 is fixed in the middle of the bottom plate 1.4 of the first cavity by screws and is located below the first opening 1.41; the first heating tube cover 1.7 and the first oil baffle plate 1.6 form an accommodating cavity for placing a heating tube, and meanwhile, the first oil baffle plate 1.6 may prevent grease in food from dropping on the heating tube and play a role in protecting the heating tube; and when the heating tube adopts a gas burner 29, flame and hot gas generated by the gas burner 29 may be guided by the second opening 1.62 and the third opening 1.63 to enter the first cavity 1 to provide conditions for heating and cooking food.

[0107] The first oil baffle plate 1.6 and the second oil baffle plate 8.6 are universal when in assembly due to the same size, structure and shape, and the first heating tube cover 1.7 and the second heating tube cover 8.7 are universal when in assembly due to the same size, structure and shape, so that stamping dies and devices required during production can be reduced, it is convenient to schedule a production plan, and the material utilization ratio is high.

[0108] Referring to FIG. 2 to FIG. 5, a middle support plate 3 is arranged below the bottom plate 1.4 of the first cavity, and first side wall plates 3.1 extending upwards and vertically are arranged on left, right and rear edges of the middle support plate 3. Specifically, seventh turning edges 3.2 are respectively arranged on upper edges of the first side wall plates 3.1, and screw holes are formed in the first side wall plates 3.1 and the seventh turning edges 3.2. During mounting, the middle support plate 3 is respectively and correspondingly connected with the lower edge of the left side wall plate 1.2 of the first cavity and the lower edge of the right side wall plate 1.3 of the first cavity through the seventh turning edges 3.2 on the upper edges.

[0109] Referring to FIG. 2 to FIG. 5, the cavity structure further includes a first square connecting piece 1.52 and a second square connecting piece 1.53, wherein the first square connecting piece 1.52 and the second square connecting piece 1.53 are respectively and correspondingly arranged on the left and right edges of the rear plate 1.5 of the first cavity, front side walls 1.54 and rear side walls 1.55 are respectively arranged on the first square connecting piece 1.52 and the second square connecting piece 1.53, screw holes are respectively formed in the front side walls 1.54 and the rear side walls 1.55, and a first part supporting plate 2 is arranged at the tail, that is, the rear of the first cavity 1. During mounting, the front side walls 1.54 of the first square connecting piece 1.52 and the second square connecting piece 1.53 are respectively and correspondingly connected with the right and left edges of the rear plate 1.5 of the first cavity, the rear side walls 1.55 of the first square connecting piece 1.52 and the second square connecting piece 1.53 are respectively and correspondingly connected with right and left edges of the first part supporting plate 2, and thus, the rear plate 1.5 of the first cavity and the first part supporting plate 2 are fixed, and the rear plate 1.5 of the first cavity is supported and positioned to be fixed by the first part supporting plate 2.

[0110] Specifically, sixth turning edges 2.1 extending outwards and vertically to form an L shape are respectively arranged on the left and right edges of the first part supporting plate 2, and screw holes are formed in the sixth turning edges 2.1. During mounting, the front side walls 1.54 of the first square connecting piece 1.52 and the second square connecting piece 1.53 are respectively and correspondingly connected with the second turning edges 1.51 on the right and left edges of the rear plate 1.5 of the first cavity, and the rear side walls 1.55 of the first square connecting piece 1.52 and the second square connecting piece 1.53 are respectively and correspondingly connected with the sixth turning edges 2.1 on the right and left edges of the first part supporting plate 2.

[0111] Referring to FIG. 2 to FIG. 5, in a possible implementation, front side snap hooks 1.56 and rear side snap hooks 1.57 are respectively arranged on the first square connecting piece 1.52 and the second square connecting piece 1.53, buckle holes 2.2 are respectively formed in positions, corresponding to the rear side snap hook 1.57 of the first square connecting piece 1.52 and the rear side snap hook 1.57 of the second square connecting piece 1.53, on the first part supporting plate 2, and the rear side snap hooks 1.57 of the first square connecting piece 1.52 and the second square connecting piece 1.53 are both buckled in the corresponding buckle holes 2.2.

[0112] With such a configuration, the rapid positioning and fixation of the first part supporting plate 2 with the first square connecting piece 1.52 as well as the second square connecting piece 1.53 are achieved, and the assembly efficiency is improved.

[0113] The front side snap hooks 1.56 are suspended. The two snap hooks are arranged so that the universality of the first square connecting piece 1.52 and the second square connecting piece 1.53 is higher, that is, the first square connecting piece 1.52 and the second square connecting piece 1.53 may be interchanged to be used, the universality of the parts is enhanced, and the production cost is reduced.

[0114] Further, a third square connecting piece 8.51 has the same structure as the first square connecting piece 1.52, a fourth square connecting piece 8.52 has the same structure as the second square connecting piece 1.53, and a manner of connection of the third square connecting piece 8.51 and the fourth square connecting piece 8.52 with a second part supporting plate 13 is the same as the manner of connection of the first square connecting piece 1.52 and the second square connecting piece 1.53 with the first part supporting plate 2.

[0115] Referring to FIG. 2 to FIG. 5, a first left heat insulation plate 4 and a first right heat insulation plate 5 are respectively arranged at the left and right sides of the first cavity 1, wherein a rear edge of the first left heat insulation plate 4 and a rear edge of the first right heat insulation plate 5 are respectively and correspondingly connected with the left and right edges of the first part supporting plate 2, and a lower edge of the first left heat insulation plate 4 and a lower edge of the first right heat insulation plate 5 are respectively and correspondingly connected with lower parts of the first side wall plates 3.1 located on the left and right edges of the middle support plate 3.

[0116] Specifically, eighth turning edges 6 are respectively arranged on the upper, lower and rear edges of the first left heat insulation plate 4 and the first right heat insulation plate 5, and screw holes are formed in the eighth turning edges 6, wherein the first left heat insulation plate 4 and the first right heat insulation plate 5 are respectively connected with the L-shaped sixth turning edges 2.1 on the left and right sides of the first part supporting plate 2 through the eighth turning edges 6 on the rear edges of the first left heat insulation plate 4 and the first right heat insulation plate 5, and the first left heat insulation plate 4 and the first right heat insulation plate 5 are respectively and correspondingly connected with the lower parts of the first side wall plates 3.1 at the left and right edges of the middle support plate 3 through the eighth turning edges 6 on the lower edges of the first left heat insulation plate 4 and the first right heat insulation plate 5.

[0117] An upper heat insulation plate 7 is arranged above the top plate 1.1 of the first cavity, left, right, front and rear edges of the upper heat insulation plate 7 extend downwards to form second side wall plates 7.1, screw holes are formed in the second side wall plates 7.1, the second side wall plates 7.1 on the left and right edges of the upper heat insulation plate 7 are respectively and correspondingly connected with the upper edge of the first left heat insulation plate 4 and the upper edge of the first right heat insulation plate 5, and the second side wall plate 7.1 on the rear edge of the upper heat insulation plate 7 is connected with an upper edge of the first part supporting plate 2.

[0118] Specifically, the design of the U-shaped plate which is formed at a time is canceled, so that the production and machining difficulty is lowered, and the rejection rate of products is reduced. The left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity and the bottom plate 1.4 of the first cavity are detachably connected, the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity are vertically mounted on the bottom plate 1.4 of the first cavity, no external force is required to be applied to the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity to enable the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity to be in a vertical state, so that the problem that the left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity and the bottom plate 1.4 of the first cavity are stressed for the second time to result in burst of enamel layers is avoided. The turning edges are arranged on the edges of the left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity and the bottom plate 1.4 of the first cavity, and the screws penetrate through the screw holes in the turning edges to connect the left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity and the bottom plate 1.4 of the first cavity. In such a fixation manner, the problem that the screws are directly fixed in the left side wall plate 1.2 of the first cavity, the right side wall plate 1.3 of the first cavity and the bottom plate 1.4 of the first cavity to result in the burst of the enamel layers on the surfaces of the plates of the cavity is avoided. All the plates of the cavities are detachably connected, so that the plates of the cavities are convenient to store and transport.

[0119] In addition, the left side wall plate and the right side wall plate of the first cavity 1 may be dismounted independently, so that the size of the bottom plate 1.4 of the first cavity may be kept constant; and for the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity, machining dies with different heights may be independently provided according to actual production demands of cavities with different heights, the areas of the left side wall plate 1.2 of the first cavity and the right side wall plate 1.3 of the first cavity are smaller, and thus, the expenses of the dies are lower. The left and right side plates and the bottom plates of the cavities in a conventional structure form the U-shaped plates which are of integrated structures, overall die sinking for the U-shaped plates of the cavities is required to be performed again when the cavities with the different heights are required to be produced, the areas of the U-shaped plates are very large, and the expenses of the dies are very high. Therefore, according to the present invention, the cost can be greatly reduced, and moreover, the bottom plates of the cavities have better substitutability and universality and may be used in the first cavity 1 and the second cavity 8 at the same time, and may also be applied to cavities of other products.

[0120] Referring to FIG. 2 to FIG. 5, a bottom support plate 9 is arranged below the bottom plate 8.4 of the second cavity, wherein third side wall plates 9.1 extending upwards and vertically are arranged on left, right and rear edges of the bottom support plate 9, the bottom support plate 9 is respectively and correspondingly connected with a lower edge of the left side wall plate 8.2 of the second cavity and a lower edge of the right side wall plate 8.3 of the second cavity through the third side wall plates 9.1 on the left and right edges, and the bottom support plate 9 is connected with a lower edge of the rear plate 8.5 of the second cavity through the third side wall plate 9.1 on the rear edge. Specifically, screw holes are formed in the third side wall plates 9.1, ninth turning edges 9.2 are respectively arranged on upper edges of the third side wall plates 9.1, and screw holes are formed in the ninth turning edges 9.2.

[0121] A second left heat insulation plate 10 and a second right heat insulation plate 11 are respectively arranged at left and right sides of the second cavity 8. Specifically, tenth turning edges 12 are respectively arranged on upper, lower and rear edges of the second left heat insulation plate 10 and the second right heat insulation plate 11, and screw holes are formed in the tenth turning edges 12;

[0122] a second part supporting plate 13 is arranged at the tail, that is, the rear of the second cavity 8, and specifically, left and right edges of the second part supporting plate 13 extend upwards and vertically to form L-shaped eleventh turning edges 13.1; and

[0123] during connection, the second left heat insulation plate 10 and the second right heat insulation plate 11 are respectively and correspondingly connected with the left and right edges of the second part supporting plate 13, and the lower edge of the second left heat insulation plate 10 and the lower edge of the second right heat insulation plate 11 are respectively and correspondingly connected with lower parts of the third side wall plates 9.1 on the left and right edges of the bottom support plate 9; and specifically, the second left heat insulation plate 10 and the second right heat insulation plate 11 are respectively connected with the L-shaped eleventh turning edges 13.1 at the left and right sides of the second part supporting plate 13 through the tenth turning edge 12 on the rear edge, and the second left heat insulation plate 10 and the second right heat insulation plate 11 are respectively and correspondingly connected with the lower parts of the third side wall plates 9.1 on the left and right edges of the bottom support plate 9 through the tenth turning edges 12 on the lower edges.

[0124] A middle heat insulation plate 14 is arranged above the top plate 8.1 of the second cavity, left, right, front and rear edges of the middle heat insulation plate 14 extend downwards to form fourth side wall plates 14.1, the fourth side wall plates 14.1 on the left and right edges of the middle heat insulation plate 14 are respectively and correspondingly connected with the upper edge of the second left heat insulation plate 10 and the upper edge of the second right heat insulation plate 11, and the fourth side wall plate 14.1 on the rear edge of the middle heat insulation plate 14 is connected with an upper edge of the second part supporting plate 13.

[0125] Specifically, screw holes are formed in the fourth side wall plates 14.1, the middle heat insulation plate 14 is respectively and correspondingly connected with the upper edge of the second left heat insulation plate 10 and the upper edge of the second right heat insulation plate 11 through the fourth side wall plates 14.1 on the left and right edges, and the middle heat insulation plate 14 is connected with the upper edge of the second part supporting plate 13 through the fourth side wall plate 14.1 on the rear edge; and

[0126] a housing bottom plate 15 is arranged below the bottom support plate 9, and during connection, a rear edge of the housing bottom plate 15 is connected with a lower edge of the second part supporting plate 13.

[0127] Specifically, left, right and rear edges of the housing bottom plate 15 extend upwards to form fifth side wall plates 15.1, and screw holes are formed in the fifth side wall plates 15.1. During connection, the housing bottom plate 15 is connected with the L-shaped eleventh turning edges 13.1 of the second part supporting plate 13 through the fifth side wall plate 15.1 on the rear edge.

[0128] Referring to FIG. 4, the cavity structure further includes a third square connecting piece 8.51 and a fourth square connecting piece 8.52, wherein the third square connecting piece 8.51 and the fourth square connecting piece 8.52 are respectively arranged on left and right edges of the rear plate 8.5 of the second cavity, front side walls 1.54 and rear side walls 1.55 are respectively arranged on the third square connecting piece 8.51 and the fourth square connecting piece 8.52, and screw holes are formed in the front side walls 1.54 and the rear side walls 1.55. During mounting, the front side walls 1.54 of the third square connecting piece 8.51 and the fourth square connecting piece 8.52 are respectively and correspondingly connected with turning edges on the right and left edges of the rear plate 8.5 of the second cavity, and the rear side walls 1.55 of the third square connecting piece 8.51 and the fourth square connecting piece 8.52 are connected with the eleventh turning edges 13.1 on the right and left edges of the second part supporting plate 13.

[0129] Referring to FIG. 3 to FIG. 4, the cavity structure further includes a first strip-shaped connecting piece 16 and a second strip-shaped connecting piece 17, wherein L-shaped sixth side wall plates 16.1 are respectively arranged on the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17, the sixth side wall plates 16.1 on the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17 are respectively and correspondingly connected with the first part supporting plate 2 and the second part supporting plate 13, a housing rear plate 18 is arranged at the rears of the first part supporting plate 2 and the second part supporting plate 13, and left and right edges of the housing rear plate 18 are respectively and correspondingly connected with the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17.

[0130] Specifically, screw holes are formed in the sixth side wall plates 16.1, the sixth side wall plates 16.1 on the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17 are respectively and correspondingly connected with the sixth turning edges 2.1 of the first part supporting plate 2 and the eleventh turning edges 13.1 of the second part supporting plate 13.

[0131] The first cavity 1 and the second cavity 8 are respectively and correspondingly provided with a first front plate 19 and a second front plate 20, an upper edge of the first front plate 19 is connected with the front edge of the upper heat insulation plate 7, a lower edge of the first front plate 19 is connected with a front edge of the middle support plate 3, an upper edge of the second front plate 20 is connected with the front edge of the middle heat insulation plate 14, and a lower edge of the second front plate 20 is connected with a front edge of the bottom support plate 9.

[0132] Specifically, twelfth turning edges 19.1 extending backwards (that is, in a direction facing the rear plate 1.5 of the first cavity or the rear plate 8.5 of the second cavity) are formed on circumferential edges of the first front plate 19 and the second front plate 20, screw holes are formed in the twelfth turning edges 19.1, the first front plate 19 is connected with the front edge of the upper heat insulation plate 7 through upper turning edges of the twelfth turning edges 19.1, the lower turning edge of the twelfth turning edges 19.1 is connected with the front edge of the middle support plate 3, the second front plate 20 is connected with the front edge of the middle heat insulation plate 14 through the upper turning edge of the twelfth turning edges 19.1, and the lower turning edge of the twelfth turning edges 19.1 is connected with the front edge of the bottom support plate.

[0133] Referring to FIG. 4 and FIG. 12, a support frame 21 is arranged above the rear edge of the middle heat insulation plate 14, and a supporting surface 21.1 is arranged on the support frame 21, wherein the supporting surface 21.1 is in contact with a bottom edge of the first part supporting plate.

[0134] With such a configuration, the convenience for positioning and fixing the middle heat insulation plate can be improved, the connection stability can be improved, and the middle heat insulation plate can achieve a better heat insulation effect.

[0135] Specifically, the support frame 21 is composed of a bottom wall and a rear wall, the bottom wall is fixed above the rear edge of the middle heat insulation plate 14 by screws, and the middle of the rear wall of the support frame 21 is inwards bent for 90° to form the supporting surface 21.1, and the supporting surface 21.1 is in contact with the bottom edge of the first part supporting plate.

[0136] Referring to FIG. 3 to FIG. 4, the cavity structure further includes a left housing side plate 22 and a right housing side plate 23, wherein a third part supporting plate 24 is arranged above the upper heat insulation plate 7, seventh side wall plates 24.1 extending upwards and vertically are arranged on left and right edges of the third part supporting plate 24, rear edges of the seventh side wall plates 24.1 of the third part supporting plate 24 are respectively and correspondingly connected with the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17, upper edges of the seventh side wall plates 24.1 of the third part supporting plate 24 are respectively and correspondingly connected with an upper edge of the left housing side plate 22 and an upper edge of the right housing side plate 23, and a rear edge of the left housing side plate 22 and a rear edge of the right housing side plate 23 are respectively and correspondingly connected with the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17.

[0137] Specifically, thirteenth turning edges 24.2 are respectively arranged on the upper and rear edges of the seventh side wall plates 24.1, screw holes are formed in the thirteenth turning edges 24.2, the third part supporting plate 24 is respectively and correspondingly connected with the first strip-shaped connecting piece 16 and the second strip-shaped connecting piece 17 through the thirteenth turning edges 24.2 located on the rear edges, and the third part supporting plate 24 is respectively and correspondingly connected with the upper edge of the left housing side plate 22 and the upper edge of the right housing side plate 23 through the thirteenth turning edges 24.2 on the upper edges.

Embodiment 2

[0138] Referring to FIG. 15 to FIG. 18, the embodiment provides a cooking device including any one cavity assembly in the embodiment 1, that is, the cavity assembly includes a first cavity 1 and a second cavity 8 with each being provided with a forward opening, and the first cavity 1 and the second cavity 8 are spaced up and down and are independent from each other;

[0139] the first cavity 1 mainly includes a top plate 1.1 of the first cavity, a left side wall plate 1.2 of the first cavity, a right side wall plate 1.3 of the first cavity, a bottom plate 1.4 of the first cavity and a rear plate 1.5 of the first cavity;

[0140] the second cavity 8 mainly includes a top plate 8.1 of the second cavity, a left side wall plate 8.2 of the second cavity, a right side wall plate 8.3 of the second cavity, a bottom plate 8.4 of the second cavity and a rear plate 8.5 of the second cavity; and

[0141] in addition, the cooking device further includes first heating apparatuses 25 and hot air assemblies 26 arranged in the first cavity 1 and the second cavity 8.

[0142] Therefore, the first heating apparatuses 25 generate heat, the heat is conducted by the hot air assemblies 26, and then, food in the cavities is uniformly heated so as to be cooked.

[0143] Further, the first heating apparatuses 25 are both arranged on top positions inside the first cavity 1 and the second cavity 8, and second heating apparatuses 27 are further arranged below the first cavity 1 and the second cavity 8; and

[0144] the first heating apparatuses 25 and the second heating apparatuses 27 are any one or a combination of electric heating tubes 28 and gas burners 29.

[0145] That is, referring to FIG. 15 and FIG. 16, in a possible implementation, the first heating apparatuses 25 and the second heating apparatuses 27 are both the electric heating tubes 28.

[0146] Referring to FIG. 17 and FIG. 18, in another possible implementation, the first heating apparatuses 25 and the second heating apparatuses 27 are both the gas burners 29.

[0147] In a further possible implementation, the first heating apparatuses 25 are the electric heating tubes 28, and the second heating apparatuses 27 are the gas burners 29; or the first heating apparatuses 25 are the gas burners 29, and the second heating apparatuses 27 are the electric heating tubes 28.

[0148] With such a configuration, a heat source of the cooking device may adopt electrically-generated heat, or gas-generated heat or a combination of the electrically-generated heat and the gas-generated heat, so that the heating modes of products are enriched, and the products are diversified to be selected by actual consumers.

[0149] Referring to FIG. 17 and FIG. 18, furthermore, when the gas burners 29 are adopted, that is, he gas burners 29 serve as the heat source, reflecting covers 30 are further arranged corresponding to the gas burners 29; the reflecting covers 30 are metal plates, such as copper plates or stainless steel plates, which are integrally molded by stamping; the reflecting covers 30 are provided with fixed protrusions 30.1 fixed together with the gas burners 29 and are arranged above other burners; the reflecting covers 30 are fixed to an inner wall of the top plate 1.1 of the first cavity or the top plate 8.1 of the second cavity or are fixed to a first oil baffle plate 1.6 below the bottom plate 1.4 of the first cavity or a second oil baffle plate 8.6 below the bottom plate 8.4 of the second cavity; and flame and hot gas of the gas burners 29 are guided into the cavities through the reflecting covers 30, so that the heat exchange effect is enhanced, the heating efficiency is improved, and thus, the food inside the cavities is beneficially and uniformly heated so as to be cooked.

[0150] Referring to FIG. 15 to FIG. 18, further, the first cavity 1 and the second cavity 8 have different heights. The number of the hot air assemblies 26 in the first cavity 1 is different from the number of the hot air assemblies 26 in the second cavity 8, and the sizes of the hot air assemblies 26 in the first cavity 1 are different from the sizes of the hot air assemblies 26 in the second cavity 8.

[0151] The first cavity 1 and the second cavity 8 are arranged at different heights, thereby accommodating cooking food with different volumes. During actual application, a proper cavity may be selected for accommodating food according to the volume of the food, and then, subsequent cooking is performed. Moreover, the first cavity 1 and the second cavity 8 are different in size and are arranged in combination with the different numbers of hot air assemblies 26, so that the heating effects of the first cavity 1 and the second cavity 8 are different, and the diversification of the heating modes of the first cavity 1 and the second cavity 8 is achieved.

[0152] Referring to FIG. 15 to FIG. 18, further, specifically, the hot air assemblies 26 include blowers 31 which are fixed to the first part supporting plate 2 and penetrate through the rear plate 1.5 of the first cavity or are fixed to the first part supporting plate 2 and penetrate through the rear plate 8.5 of the second cavity, and in other possible implementations, the blowers 31 may be directly fixed to the rear plate 1.5 of the first cavity or the rear plate 8.5 of the second cavity.

[0153] The blowers 31 specifically adopt centrifugal blowers 31, preferably, backward centrifugal blowers 31.

[0154] Due to the adoption of the centrifugal blowers 31 adopting an axial air intake and radial air discharge manner, hot air circulation in the first cavity 1 and the second cavity 8 is performed independently, thereby uniformly heating food in the first cavity 1 and the second cavity 8, and then, achieving a better cooking effect.

[0155] Referring to FIG. 15 to FIG. 18, more preferably, the hot air assemblies 26 further include protective covers 32 fixed to the rear plate 1.5 of the first cavity, the blowers 31 are accommodated in the protective covers 32, surfaces of the protective covers 32 are provided with several air outlets 32.1 in circumferential directions of the blowers 31 and several air inlets 32.2 in axial directions of the blowers 31. In an actual working process, the blowers 31 run, and then, air flows in the first cavity 1 and the second cavity 8 enter the blowers 31 through the air inlets 32.2 and are discharged through the air outlets 32.1 in radial directions of the blowers 31 to independently form a hot air backflow in the first cavity 1 and the second cavity 8, thereby uniformly heating the food in the cavities.

[0156] In summary, the cavity structure for accommodating the cooking food and the cooking device applying the cavity structure provided by the present invention have the characteristics of simple and reasonable structure, convenience for storage, high material utilization ratio and production efficiency, low part rejection rate, and high dismounting/mounting speed.

[0157] The technical means disclosed by the solutions of the present invention is not limited to the technical means disclosed in the above-mentioned implementations and further includes technical solutions formed by any combinations of the above-mentioned technical features. It should be noted that those of ordinary skill in the art may also make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the protective scope of the present invention.