HEATING STRUCTURE, SWITCHABLE HEATING/COOLING AIR BLOWER, AND METHOD FOR SWITCHING BETWEEN HEATING MODE AND COOLING MODE

Abstract

A heating structure, a switchable heating/cooling air blower, and a method for switching between a heating mode and a cooling mode are provided. The heating structure includes a switching motor, a heating assembly, a connecting base, and a swing blade. A rotating component is disposed at one end of the heating assembly and is connected to the switching motor. The connecting base defines a guide groove. The swing blade includes a first connecting shaft and a second connecting shaft, the first connecting shaft is hinged to the rotating portion, and the second connecting shaft is inserted into the guide groove. The heating assembly is driven to rotate by the switching motor, so that the heating assembly is capable of swinging by a certain angle to enter or exit an air outlet, so as to switch the switchable heating/cooling air blower between the heating mode and the cooling mode.

Claims

1. A heating structure, comprising: a switching motor; a heating assembly; a connecting base; and a swing blade; wherein a rotating component is disposed at one end of the heating assembly and is connected to the switching motor; wherein the connecting base defines a guide groove; wherein the swing blade comprises a first connecting shaft and a second connecting shaft, the first connecting shaft is hinged to the rotating portion, and the second connecting shaft is inserted into the guide groove; wherein the guide groove is an arc-shaped rail guide groove having a first limiting point and a second limiting point for limiting the second connecting shaft, the heating structure satisfies a relationship (1) as follows: $\{\begin{array}{c}{b}_1=\sqrt{a^2+c^2-2\mathrm{ac}\mathrm{COS}\left(\right)};=142180;\\ b_2=\sqrt{a^2+c^2-2\mathrm{ac}\mathrm{COS}\left(\right)};=155180;\end{array}.$ wherein in the relationship (1), a represents a distance between the first connecting shaft and the second connecting shaft, c represents a distance between the first connecting shaft and a rotating shaft of the heating assembly, b.sub.1 represents a first distance between the second connecting shaft and the rotating shaft of the heating assembly when the second connecting shaft is located at the first limiting point, a represents a first included angle between the a and the c when the second connecting shaft is located at the first limiting point, b.sub.2 represents a second distance between the second connecting shaft and the rotating shaft of the heating assembly when the second connecting shaft is located at the second limiting point, and represents a second included angle between the a and the c when the second connecting shaft is located at the second limiting point; wherein the rotating portion comprises a first shaft connecting end and a second shaft connecting end, the first shaft connecting end is connected to a rotating shaft of the switching motor, and the second shaft connecting end is hinged to the first connecting shaft; wherein the swing blade further comprises at least one limiting portion, the at least one limiting portion is configured to limit the swing blade to rotate to a predetermined angle; wherein the heating assembly comprises a rotating bracket and a heating body, the heating body is disposed on the rotating bracket, and the rotating portion is disposed at one end of the rotating bracket; wherein the at least one limiting portion is disposed on the first connecting shaft, the rotating bracket comprises at least one abutting portion abutting against the at least one limiting portion; wherein the guide groove is an oblong slot; wherein the connecting base defines a motor accommodating cavity, the switching motor is disposed in the motor accommodating cavity.

2. The heating structure according to claim 1, wherein a cable arrangement plate is disposed at a bottom portion of the heating assembly, and the cable arrangement plate defines at least one cable management groove.

3. A switchable heating/cooling air blower, comprising: a housing body; a blower wheel; a blower motor; and the heating structure according to claim 1; wherein the housing body defines an air outlet; wherein the blower wheel is disposed in the housing body; wherein the blower motor is configured to drive the blower wheel to rotate; wherein the heating structure is disposed on the housing body, and the switching motor is configured to drive the heating assembly to enter or exit the air outlet.

4. The switchable heating/cooling air blower according to claim 3, wherein the air outlet comprises a short guide wall and a long guide wall respectively at two external sides thereof, the housing body further comprises an accommodating portion located adjacent to one side of the short guide wall, the switching motor is configured to drive the heating assembly to move between the air outlet and the accommodating portion.

5. The switchable heating/cooling air blower according to claim 4, wherein the swing blade is disposed at one side of the heating assembly close to the long guide wall, the swing blade has an abutting surface and a guide surface.

6. A method for switching between a heating mode and a cooling mode, applied to the switchable heating/cooling air blower according to claim 5 to switch the switchable heating/cooling air blower between the heating mode and the cooling mode, comprising: driving the rotating portion of the heating assembly to rotate by the switching motor to drive the heating assembly to enter or exit the air outlet of the switchable heating/cooling air blower; when the heating assembly rotates, rotating the swing blade around the first connecting shaft and with respect to the rotating portion, and moving the second connecting shaft along the arc-shaped rail guide groove having the first limiting point and the second limiting point to switch the swing blade between two states; when the heating assembly enters the air outlet, driving the blower wheel to rotate by the blower motor to generate airflow, passing the airflow through the heating assembly to blow out warm air, abutting the swing blade against the long guide wall of the air outlet; and when the heating assembly exits the air outlet and enters the accommodating portion, moving the swing blade along the arc-shaped rail guide groove by the second connecting shaft and rotating the swing blade to the predetermined angle to form a cooling air guide port with the long guide wall.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0031] FIG. 1 illustrates a structural schematic diagram and a partial enlarged schematic diagram of connecting structures between a heating assembly and a swing blade when a heating structure is in a heating mode.

[0032] FIG. 2 illustrates a structural schematic diagram and a partial enlarged schematic diagram of the connecting structures between the heating assembly and the swing blade when the heating structure is in a cooling mode.

[0033] FIG. 3 illustrates a structural schematic diagram and a partial enlarged schematic diagram of a heating structure in the heating mode.

[0034] FIG. 4 illustrates a structural schematic diagram and a partial enlarged schematic diagram of the heating structure in the cooling mode.

[0035] FIG. 5 illustrates an exploded structural schematic diagram and a partial enlarged schematic diagram of the heating structure.

[0036] FIG. 6 illustrates a structural schematic diagram and a partial enlarged schematic diagram of a switchable heating/cooling air blower in the heating mode.

[0037] FIG. 7 illustrates a structural schematic diagram and a partial enlarged schematic diagram of the switchable heating/cooling air blower in the cooling mode.

[0038] FIG. 8 illustrates a structural schematic diagram and a partial enlarged schematic diagram of the switchable heating/cooling air blower.

[0039] FIG. 9 illustrates a planar structural schematic diagram of the switchable heating/cooling air blower in the heating mode, where A2 is a partial cross-sectional structural schematic diagram of A1.

[0040] FIG. 10 illustrates a planar structural schematic diagram of the switchable heating/cooling air blower in the cooling mode, where B2 is a partial cross-sectional structural schematic diagram of B1.

[0041] FIG. 11 illustrates a planar structural schematic diagram of the switchable heating/cooling air blower in the heating mode and a schematic diagram of a geometric relationship of partial structures of the switchable heating/cooling air blower in the heating mode.

[0042] FIG. 12 illustrates a planar structural schematic diagram of the switchable heating/cooling air blower in the cooling mode and a schematic diagram of a geometric relationship of partial structures of the switchable heating/cooling air blower in the cooling mode.

[0043] Reference numerals in the drawings: 1. switching motor; 2. heating assembly; 20. rotating shaft of the heating assembly; 21. rotating bracket; 22. heating body; 23. cable arrangement plate; 211. rotating portion; 212. abutting portion; 2111. first shaft connecting end; 2112. second connecting end; 231. cable arrangement groove; 3. connecting base; 31. guide groove; 32. motor accommodating cavity; 4. swing blade; 41. first connecting shaft; 42. second connecting shaft; 43. limiting portion; 44. abutting surface; 45. guide surface; 42a. first limiting point; 42b. second limiting point; 5. housing body; 51. air outlet; 52. accommodating portion; 511. short guide wall; 512. long guide wall; 6. blower wheel; 7. blower motor.

DETAILED DESCRIPTION OF EMBODIMENTS

[0044] Technical solutions in embodiments of the present disclosure are clearly and completely described below with reference to accompanying drawings in the embodiments of the present disclosure, and obviously, the described embodiments are only a part but not all of the embodiments of the present disclosure. All other embodiments obtained by those who skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within a protection scope of the present disclosure. It should be understood that the drawings are only provided with reference and description, and are not intended to limit the present disclosure. Connection relationships shown in the accompanying drawings are merely for ease of clear description, and does not limit a connection manner.

[0045] In the description of the present disclosure, it should be noted that orientation or position relationships indicated by terms center, upper, lower, left, right, vertical, horizontal, inner, outer, etc. are based on orientation or position relationships shown in the accompanying drawings, rather than indicating or implying that a device or element referred to must have a specific orientation or is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present disclosure. Terms first, second, and third are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless expressly specified and limited otherwise, terms disposed, connected with and connected to should be understood in a broad sense, for example, may be a fixed connection, a detachable connection, or an integral connection; may be a mechanical connection, or may be an electrical connection; and may be direct connection, or may be indirect connection with an intermediate medium, and may be a communication inside two elements. For those who skilled in the art, specific meanings of above terms in the present disclosure may be understood according to specific situations. Terms used in the specification of the present disclosure are merely for a purpose of describing specific embodiments, and are not intended to limit the present disclosure.

[0046] As shown in FIGS. 1-12, the embodiments of the present disclosure provide a heating structure, including a switching motor 1, a heating assembly 2, a connecting base 3, and a swing blade 4. A rotating component is disposed at one end of the heating assembly 2 and is connected to the switching motor 1. The connecting base 3 defines a guide groove 31. The swing blade 4 includes a first connecting shaft 41 and a second connecting shaft 42, the first connecting shaft 41 is hinged to the rotating portion 211, and the second connecting shaft 42 is inserted into the guide groove 31. Specifically, the swing blade 4 is a guide vane or a guide plate.

[0047] Specifically, as shown in FIGS. 11 and 12, the guide groove 31 is an arc-shaped rail guide groove 31 having a first limiting point 42a and a second limiting point 42b for limiting the second connecting shaft 42, the heating structure satisfies a relationship (1) as follows:

[00003]$\{\begin{array}{c}{b}_1=\sqrt{a^2+c^2-2\mathrm{ac}\mathrm{COS}\left(\right)};=142180;\\ b_2=\sqrt{a^2+c^2-2\mathrm{ac}\mathrm{COS}\left(\right)};=155180;\end{array}.$

[0048] In the relationship (1), a represents a distance between the first connecting shaft 41 and the second connecting shaft 42, c represents a distance between the first connecting shaft 41 and a rotating shaft 20 of the heating assembly 2, b.sub.1 represents a first distance between the second connecting shaft 42 and the rotating shaft 20 of the heating assembly 2 when the second connecting shaft 42 is located at the first limiting point 42a, represents a first included angle between the a and the c when the second connecting shaft 42 is located at the first limiting point 42a, b.sub.2 represents a second distance between the second connecting shaft 42 and the rotating shaft 20 of the heating assembly 2 when the second connecting shaft 42 is located at the second limiting point 42b, and represents a second included angle between the a and the c when the second connecting shaft 42 is located at the second limiting point 42b.

[0049] According to the present disclosure, the heating assembly 2 is driven to rotate by the switching motor 1, so that the heating assembly 2 is capable of swinging by a certain angle to enter or exit the air outlet 51, so as to switch a switchable heating/cooling air blower between a heating mode and a cooling mode, and a situation that an airflow performance of the cold air is affected due to a fact that the heating assembly 2 physically obstructs the air outlet 51 is avoided. When the heating assembly 2 swings or rotates, the second connecting shaft 42 of the swing blade 4 moves along the guide groove 31 of the connecting base 3, and when the second connecting shaft 42 moves to either end of two ends of the guide groove 31, if the heating assembly 2 continues to move, the swing blade 4 rotates with respect to the heating assembly 2 by taking the first connecting shaft 41 as a rotating shaft thereof, in this way, the swing blade 4 is capable of switching between swing and reset, so as to respectively adapt to two working modes of heating and cooling. Furthermore, switching of two states of the swing blade 4 is achieved without providing a reset torsion spring, which is stable in switching effect and not easy to damage, mounting difficulty and cost are low, the maintenance is easy, and an adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0050] In the heating mode, the heating assembly 2 enters and seals the air outlet 51, so that air generated by a blower wheel 6 passes through the heating assembly 2 to blow out warm air, and in order to prevent air leakage at the air outlet 51 without passing through the heating assembly 2, which could affect warm air guiding performance, two sides of the swing blade 4 need to abut against the long guide wall 512 of the air outlet 51 and a side wall of the heating assembly 2, so as to avoid cold air leakage due to gaps generated at the two sides of the swing blade 4, and at this time, the second connecting shaft 42 is located at a first end of the guide groove 31.

[0051] In the cooling mode, the heating assembly 2 rotates away from the air outlet 51 until the heating assembly 2 enters the accommodating portion 52 of the housing body 5, in this process, the second connecting shaft 42 of the swing blade 4 moves from the first end of the guide groove 31 to a second end of the guide groove 31, and the heating assembly 2 continues to rotate, since the second connecting shaft 42 is limited by the second end of the guide groove 31, the swing blade 4 takes the first connecting shaft 41 as the rotating shaft thereof to rotate, the swing blade 4 and the heating assembly 2 rotate with respect to each other until the at least one limiting portion 43 of the swing blade 4 abuts against the at least one abutting portion 212 of the heating assembly 2, so that the swing blade 4 forms the air guide port with the long guide wall 512 of the air outlet 51, and when the heating assembly 2 does not block cold air, the cold air is blown farther and with greater force, in this way, a cooling effect is further improved, and meanwhile, an overall structure of the switchable heating/cooling air blower is more compact, and an occupied space of the switchable heating/cooling air blower is saved.

[0052] In addition, when the switching motor 1 drives the heating assembly 2 to rotate around the rotating shaft 20 of the heating assembly 2 until the second connecting shaft 42 moves from the first limiting point 42a to the second limiting point 42b or moves from the second limiting point 42b to the first limiting point 42a, due to a fact that, throughout an activity track of the second connecting shaft 42, circular arc tracks respectively formed by the first connecting shaft 41 and the second connecting shaft 42 are not completely overlapped or central points of the circular arc tracks are no longer at the same point, there is a limit point on the activity track of the second connecting shaft 42, and the jamming and the abnormal sound may appear at the limit point. In order to solve this problem, in the embodiments, the guide groove 31 is the arc-shaped rail guide groove 31, and the activity track or a central position of the second connecting shaft 42 are limited and guided by applying a geometric limitation as shown in the relationship (1), so as to effectively avoid problems of the jamming and the abnormal sound when the heating assembly 2 is active.

[0053] In one embodiment, as shown in FIG. 1, the rotating portion 211 includes a first shaft connecting end 2111 and a second shaft connecting end 2112, the first shaft connecting end 2111 is connected to a rotating shaft of the switching motor 1, and the second shaft connecting end 2112 is hinged to the first connecting shaft 41. Specifically, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0054] In another embodiment, as shown in FIGS. 1-2, 4-5, and 8-10, the swing blade 4 further includes at least one limiting portion 43, the at least one limiting portion 43 is configured to limit the swing blade 4 to rotate to a predetermined angle. Specifically, the swing blade 4 is rotated to the predetermined angle in a cooling mode of the heating structure, so as to prevent the swing blade 4 from rotating at an excessive angle to affect an air guide effect of cold air output. In this way, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect is stable and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0055] In another embodiment, as shown in FIGS. 2 and 4, the heating assembly 2 includes a rotating bracket 21 and a heating body 22, the heating body 22 is disposed on the rotating bracket 21, and the rotating portion 211 is disposed at one end of the rotating bracket 21.

[0056] Furthermore, the at least one limiting portion 43 is disposed on the first connecting shaft 41, the rotating bracket 21 includes at least one abutting portion 212 abutting against the at least one limiting portion 43. Specifically, the at least one limiting portion 43 abuts against the at least one abutting portion 212 on the rotating bracket 21, so as to limit a maximum angle or the predetermined angle of the swing blade 4 and achieve an optimal air guide effect of the swing blade 4 at the air outlet 51. Furthermore, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0057] In another embodiment, as shown in FIGS. 1-10, the guide groove 31 is an oblong slot. When the heating assembly 2 swings or rotates, the second connecting shaft 42 of the swing blade 4 moves along the guide groove 31 of the connecting base 3, and when the second connecting shaft 42 moves to either end of two ends of the guide groove 31, if the heating assembly 2 continues to move, the swing blade 4 rotates with respect to the heating assembly 2 by taking the first connecting shaft 41 as the rotating shaft thereof, in this way, the swing blade 4 is capable of switching between swing and reset, so as to respectively adapt to the two working modes of heating and cooling. Furthermore, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0058] In another embodiment, as shown in FIGS. 3-5, the connecting base 3 defines a motor accommodating cavity 32, the switching motor 1 is disposed in the motor accommodating cavity 32. Specifically, an overall structure of the heating structure is more compact, and an occupied space of the heating structure is saved. Furthermore, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0059] In another embodiment, as shown in FIG. 4, a cable management plate 23 is disposed at a bottom portion of the heating assembly 2, and the cable management plate 23 defines at least one cable management groove 231. Specifically, cables are better arranged, so that a rotation of the heating assembly 2 is prevented from being affected by disordered cables, a risk that the cables are wound due to the rotation of the heating assembly 2 is also avoided, potential safety hazards are reduced, the overall structure of the heating structure is more compact, and the occupied space of the heating structure is saved. Furthermore, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0060] The present disclosure further provides the switchable heating/cooling air blower, as shown in FIGS. 6-10, including the housing body 5, the blower wheel 6, a blower motor 7, and the heating structure as foregoing. The housing body 5 defines the air outlet 51. The blower wheel 6 is disposed in the housing body 5. The blower motor 7 is configured to drive the blower wheel 6 to rotate. The heating structure is disposed on the housing body 5, and the switching motor 1 is configured to drive the heating assembly 2 to enter or exit the air outlet 51. According to the present disclosure, the heating assembly 2 is driven to rotate by the switching motor 1, so that the heating assembly 2 is capable of swinging by the certain angle to enter or exit the air outlet 51, so as to switch the switchable heating/cooling air blower between the heating mode and the cooling mode, and the situation that the airflow performance of the cold air is affected due to the fact that the heating assembly 2 physically obstructs the air outlet 51 is avoided. When the heating assembly 2 swings or rotates, the second connecting shaft 42 of the swing blade 4 moves along the guide groove 31 of the connecting base 3, and when the second connecting shaft 42 moves to either end of the two ends of the guide groove 31, if the heating assembly 2 continues to move, the swing blade 4 rotates with respect to the heating assembly 2 by taking the first connecting shaft 41 as the rotating shaft thereof, in this way, the swing blade 4 is capable of switching between swing and reset, so as to respectively adapt to the two working modes of heating and cooling. Furthermore, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0061] In another embodiment, as shown in FIGS. 2 and 8-10, the air outlet 51 includes a short guide wall 511 and the long guide wall 512 respectively at two external sides thereof, the housing body 5 further includes the accommodating portion 52 located adjacent to one side of the short guide wall 511, the switching motor 1 is configured to drive the heating assembly 2 to move between the air outlet 51 and the accommodating portion 52. In this way, the switching of the two states of the swing blade 4 is achieved without providing the reset torsion spring, which is stable in switching effect and not easy to damage, the mounting difficulty and cost are low, the maintenance is easy, and the adverse effect caused by the reset torsion spring in the prior art is effectively solved.

[0062] In another embodiment, as shown in FIGS. 2 and 9-10, the swing blade 4 is disposed at one side of the heating assembly 2 close to the long guide wall 512, the swing blade 4 has an abutting surface 44 and a guide surface 45. Specifically, a certain angle or radian is formed between the abutting surface 44 of the swing blade 4 and the guide surface 45 to further improve the air guide effect of the swing blade 4 in the cooling mode of the switchable heating/cooling air blower.

[0063] Specifically, since the heating structure needs to completely cover the air outlet 51 in the heating mode of the switchable heating/cooling air blower, in order to avoid affecting airflow performance of warm air due to the cold air leakage of the swing blade 4, the swing blade 4 needs to be abut against the long guide wall 512 and a side wall of the rotating bracket 21 in the heating mode of the switchable heating/cooling air blower. The solutions of the Document 1 as mentioned in the background adopt the reset torsion spring, after the reset torsion spring is used for a long time, the torsion spring may become fatigued and finally losing elasticity, and after the torsion spring is damaged, the swing blade 4 cannot effectively abut against the long guide wall 512 and the side wall of the rotating bracket 21 in the heating mode of the switchable heating/cooling air blower, and in the cooling mode of the switchable heating/cooling air blower, the swing blade 4 cannot swing and stay at the predetermined angle, resulting in that the swing blade 4 cannot form an optimal air guide port for the cold air with the long guide wall 512, which inevitably affect the airflow performance of the cold air, so that the cold air cannot be blown farther. However, technical solutions of the present disclosure well avoid adverse effects caused by damage of the reset torsion spring.

[0064] In the heating mode of the switchable heating/cooling air blower, the heating assembly 2 enters and physically obstructs the air outlet 51, and the two sides of the swing blade 4 respectively abut against the long guide wall 512 and the side wall of the rotating bracket 21 close to the long guide wall 512, so as to prevent the air outlet 51 from leaking and affecting the airflow performance of the warm air.

[0065] In the cooling mode of the switchable heating/cooling air blower, the heating assembly 2 exits the air outlet 51 and enters the accommodating portion 52 on the housing body 5, and in the process, the swing blade 4 rotates by a certain angle until the at least one limiting portion 43 of the swing blade 4 abuts against the at least one abutting portion 212 on the rotating bracket 21, at this time, one side of the swing blade 4 close to the long guide wall 512 becomes nearly aligned with the long guide wall 512, so that the swing blade 4 and the long guide wall 512 more effectively function as air guides at the air outlet 51, the cold air is blown farther, and optimal airflow performance of the cold air is achieved. Specifically, in the cooling mode of the switchable heating/cooling air blower, one side of the abutting surface 44 of the swing blade 4 is disposed closely adjacent to or abut against the short guide wall 511, the guide surface 45 of the swing blade 4 is nearly aligned with the long guide wall 512, in this way, the swing blade 4 and the long guide wall 512 more effectively function as the air guides at the air outlet 51.

[0066] The present disclosure further provides a method for switching between the heating mode and the cooling mode, including following steps.

[0067] Switching step: driving the rotating portion 211 of the heating assembly 2 to rotate by the switching motor 1 to drive the heating assembly 2 to enter or exit the air outlet 51 of the switchable heating/cooling air blower.

[0068] Swing blade 4 adjusting step: when the heating assembly 2 rotates, rotating the swing blade 4 around the first connecting shaft 41 and with respect to the rotating portion 211, and moving the second connecting shaft 42 along the arc-shaped rail guide groove 31 having the first limiting point 42a and the second limiting point 42b to switch the swing blade 4 between the two states.

[0069] Heating mode step: when the heating assembly 2 enters the air outlet 51, driving the blower wheel 6 to rotate by the blower motor 7 to generate airflow, passing the airflow through the heating assembly 2 to blow out the warm air, abutting the swing blade 4 against the long guide wall 512 of the air outlet 51 to avoid air leakage.

[0070] Cooling mode step: when the heating assembly 2 exits the air outlet 51 and enters the accommodating portion 52, moving the swing blade 4 along the arc-shaped rail guide groove 31 by the second connecting shaft 42 and rotating the swing blade 4 to the predetermined angle to form a cooling air guide port with the long guide wall 512 to enable cold air generated by the blower wheel 6 to be directed farther and with greater force.

[0071] Limiting step: using the relationship (1) to make the activity track of the second connecting shaft 42 accurate, so as to avoid the jamming and the abnormal sound of the heating assembly 2 during a switching process.

[0072] The relationship (1):

[00004]$\{\begin{array}{c}{b}_1=\sqrt{a^2+c^2-2\mathrm{ac}\mathrm{COS}\left(\right)};=142180;\\ b_2=\sqrt{a^2+c^2-2\mathrm{ac}\mathrm{COS}\left(\right)};=155180;\end{array}.$

[0073] In the relationship (1), the a represents the distance between the first connecting shaft 41 and the second connecting shaft 42, the c represents the distance between the first connecting shaft 41 and the rotating shaft 20 of the heating assembly 2, the b.sub.1 represents the first distance between the second connecting shaft 42 and the rotating shaft 20 of the heating assembly 2 when the second connecting shaft 42 is located at the first limiting point 42a, the a represents the first included angle between the a and the c when the second connecting shaft 42 is located at the first limiting point 42a, the b.sub.2 represents the second distance between the second connecting shaft 42 and the rotating shaft 20 of the heating assembly 2 when the second connecting shaft 42 is located at the second limiting point 42b, and the represents the second included angle between the a and the c when the second connecting shaft 42 is located at the second limiting point 42b.

[0074] In the specification and claims of the present disclosure, words include/comprise and have/with and variations thereof are used to specify presence of stated features, values, steps or components, but do not exclude presence or addition of one or more other features, values, steps, components, or a combination thereof.

[0075] Some features of the present disclosure are set forth in different embodiments for clarity of illustration, however, these features may also be described in connection with a single embodiment. Rather, some features of the present disclosure, for brevity, are only described in a single embodiment, however, these features may also be described separately or in any suitable combination in different embodiments.

[0076] Finally, it should be noted that, the foregoing are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Although the present disclosure has been described in detail with reference to the foregoing embodiments, for those who skilled in the art, the technical solutions described in the foregoing embodiments may still be modified, or some of the technical features may be equivalently replaced, and any modification, equivalent replacement, improvement, etc. made within a spirit and principle of the present disclosure shall fall within the protection scope of the present disclosure.