FOOD-PREPARATION APPARATUS WITH DIVERTER MECHANISM

Abstract

The invention relates to a food-preparation apparatus, in particular baking apparatus, for forming and baking a food product (5), preferably a flat bread from a dough portion (2) accommodated in a capsule (12), having a housing (3), having a capsule-handling device (4) for opening and/or emptying the capsule (12), and having an upper plate (14), and a lower plate (11), arranged in the housing (3), it being possible for the lower plate to be adjusted in a guide device between a receiving position (A) for receiving the dough portion (2) from the capsule (12), a position of interaction (W) for interacting with the upper plate (14) for baking and/or forming, in particular pressing, the dough portion, and an emptying position (E), in which the lower plate (11) is inclined relative to a base surface (46) of the food-preparation apparatus (1), wherein the guide device has a diverter (20) with a diverter element (21), which can be switched between at least two switching positions and is intended for predetermining an adjustment distance of the lower plate (11) in the guide device, wherein the diverter element (21) is assigned an electromotive drive (M) for switching the diverter element (21) automatically.

Claims

1. A baking apparatus, for forming and baking a food. product (5), from a dough portion (2) accommodated in a capsule (12), having a housing (3), having a capsule-handling device (4) for opening and/or emptying the capsule (12), and having an upper plate (14), and a lower plate (11), arranged in the housing (3), which lower plate can be adjusted in a guide device of the baking apparatus along an adjustment path between a receiving position (A) for receiving the dough portion (2) from the capsule (12), an interaction position (W) for interacting with the upper plate (14) for baking and/or forming the dough portion, and an emptying position (F), in which the lower plate (11) is inclined relative to a base surface (46) of the baking apparatus (1), wherein the guide device has a diverter (20) with a diverter element (21), which can be switched between at least two switching positions for predetermining the adjustment distance of the lower plate (11) in the guide device, wherein the baking apparatus comprises an electromotive drive (M) assigned to the diverter element (21) for switching the diverter element (21) automatically.

2. The baking apparatus according to claim 1, wherein the electromotive drive (M) is a drive for actuating a capsule opening and/or emptying mechanism of the capsule-handling device (4).

3. The baking apparatus according to claim 2, wherein, by means of the electromotive drive (M) a plunger (25) of the capsule-handling device (4) can be driven from the capsule (12), accompanied by deformation of the capsule (12), for emptying the dough portion (2) and/or a holding-down stamp (26) which is adjustable relative to the plunger (25) can be driven for adjustment of the capsule (12) against an opening element for piercing a capsule top.

4. The baking apparatus according to claim 1, wherein the diverter element (21) can be actuated by rotating the electromotive drive (M), in which an adjustment force can be transferred from the electromotive drive (M) to the diverter element (21) via force transmission means (24), wherein an eccentric shaft (23) can be rotated and the diverter element(21) is operatively connected to the eccentric shaft (23) via the force transmission means (24), with radial spacing from the axis of rotation (R) thereof.

5. The baking apparatus according to claim 4, wherein the force transmission means (24) comprises a tolerance compensating device (28) with two force transmission elements (29, 30) of the force transmission means, which are adjustable relative to one another, by rotation of the electromotive drive (M) relative to one another contrary to a spring force of at least one tolerance compensating spring (32).

6. The baking apparatus according to claim 5, wherein the at least one tolerance compensating spring (32) is arranged in such a manner that this can be tensioned under the action of the tensile force of the force transmission elements (29, 30) by means of the electromotive drive (M), wherein the tolerance compensating spring (32) is tensioned in a switching position of the diverter element (21), which enables an adjustment of the lower plate (11) from the interaction position (W) into the emptying position (E).

7. The baking apparatus according to claim 5, wherein the relative mobility of the force transmission elements (29, 30) is limited by an adjustable stop by means of the adjustment movement of which a spring pre-tension of the at least one tolerance compensating spring (32) can be set.

8. The baking apparatus according to claim 5, wherein the diverter element (21) is pivotally mounted about a pivot axis (S) and is connected in an articulated manner to one of the force transmission elements (29, 30) at a distance from the pivot axis (S).

9. The baking apparatus according to claim 1, wherein the guide device (16) is configured in such a manner that the lower plate (11) in the emptying position (E) is inclined towards a housing front side (6) having a capsule drawer insertion opening and/or at least one input element for user inputs and/or at least one display and/or is arranged at least in sections, over the greatest part of its longitudinal extension in its receiving position (A) below, in a vertical projection surface of a plunger (25) and/or holding-down stamp (26) of the capsule-handling device (4) and/or below a capsule drawer for feeding a capsule (12) into the housing (3).

10. The baking apparatus according to claim 1, wherein the guide device comprises a rectilinear first guide portion (41) for adjusting the lower plate (11) between the receiving position (A) and the interaction position (W) and a second guide portion, arranged at an angle to the first guide portion (41), for adjusting the lower plate (11), from the interaction position (W), into the emptying position (E).

11. The baking apparatus according to claim 10, wherein the second guide portion (42) is configured as a dead end portion.

12. The baking apparatus according to claim 1, wherein the emptying position (E) is assigned a receiving chamber for a ready baked food product (5) formed by a food drawer which can be removed from a housing front side (6), inside the housing (3).

13. A method for operating a baking apparatus (1) according to claim 1, wherein a dough portion (2) is emptied from a capsule (12) and in the receiving position (A) of the lower plate (11) is placed on this plate, wherein the diverter element (21) is adjusted between its switching positions by means of an electromotive drive (M).

14. The method according to claim 13, wherein during the adjustment of the diverter mechanism (21) a capsule opening and/or emptying mechanism is actuated.

15. The method according to claim 13, wherein during the adjustment of the diverter mechanism (21) at least one tolerance compensating spring (32) is tensioned and/or released between two force transmission elements (29, 30).

16. The baking apparatus according to claim 5, wherein the two force transmission elements (29, 30) are adjustable relative to one another translationally, and wherein the force transmission means (24) comprises rod elements (24) guided translationally relative to one another.

17. The baking apparatus according to claim 10, wherein the rectilinear first guide (41) portion is a horizontal first guide portion, and wherein the second guide portion is rectilinear or curved.

18. The baking apparatus according to claim 10, wherein the second guide portion is inclined downwards and in the direction of the housing front side (6).

19. The method according to claim 14, wherein the capsule opening and/or emptying mechanism is a plunger (25) for emptying the capsule (12) and/or a holding-down stamp (26) for adjusting the capsule (12) against an opening element.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Further advantages, features, and details of the invention are obtained from the following description of preferred exemplary embodiments and with reference to the drawings.

[0032] In the figures:

[0033] FIG. 1 shows a highly schematic diagram of a preferred exemplary embodiment of a food-preparation apparatus here configured as a domestic baking apparatus, configured according to the concept of the invention,

[0034] FIG. 1a to FIG. 5b show a guide device with diverter of the food-preparation apparatus shown in FIG. 1 in various operating or switching states.

[0035] FIG. 6 shows a schematic of a possible preferred implementation of a drive train for driving the diverter element of the guide device with a common electromotive drive for driving a plunger and a holding-down stamp of a capsule-handling device of the food-preparation apparatus and for simultaneously switching or driving the diverter element of the guide device, and

[0036] FIG. 7a and FIG. 7b show various diagrams of the capsule-handling device according to FIG. 6.

[0037] In the figures the same elements and elements having the same function are characterized by the same reference numbers.

DETAILED DESCRIPTION

[0038] FIG. 1 shows a food-preparation apparatus 1 for baking and forming a dough portion 2 initially still accommodated in a capsule, for example made of plastic or a light metal alloy. The dough portion 2 is emptied inside a housing 3 of the food-preparation apparatus 1 by means of a capsule-handling device 4 from a capsule not shown, in particular a disposable capsule, and then, as will be explained in further detail hereinafter, further processed, in particular by forming (pressing) and baking to form a foodstuff 5 (food product), in the present case a flat bread. The capsule-handling device 4 is configured in such a manner that individual (portion) capsules can be opened with this and the dough portion 2 can be emptied from the capsule. For this purpose, the capsule-handling device 4 preferably comprises a plunger to be explained in further detail subsequently, for application of pressure, in particular deformation of the capsule and/or its holding-down stamp for adjustment of the capsule against a blade. The housing 3 of the food-preparation apparatus comprises a housing front side 6 with operating elements not shown and/or a display. Preferably located in the housing front side 6 is a capsule drawer opening for withdrawing and inserting a preferably provided, optional capsule drawer. The food-preparation apparatus 1 further comprises inside the housing 3 a baking chamber 7 with a baking chamber housing 8, in the present case made of metal sheet for shielding the temperature of between about 170° C. and 250° C. which occur during the baking process. The food-preparation apparatus 1 or the housing thereof additionally comprises a base side 9 which, when the food-preparation apparatus 1 is set up as intended on a horizontal surface, is facing this. Support surfaces 10, in the present case configured as standing feet are realized on the housing 3, which define a lowermost region of the food-preparation apparatus 1 along a vertical V which extends perpendicular to the horizontal H. The support surfaces define a base surface 46 of the apparatus which is aligned horizontally when set up as intended.

[0039] The food-preparation apparatus 1 comprises a lower plate 11, configured in the present case as a combined baking and forming plate, which is shown three times or in three different functional positions in FIG. 1, namely a receiving position A on the left in the plane of the drawing, adjusted in the direction of the housing front side 6, in a region along the vertical V below the capsule-handling device 4 in order to be able to receive the dough portion emptied from the capsule. From the receiving position A the lower plate 11 can be adjusted, in the present case in the direction of a housing rear side 13 facing away from the housing front side 6 or opposite to this, into an interaction position W in which the lower plate 1 cooperates with an upper plate 14, also configured as a combined baking and forming plate, for forming and baking the dough portion 2, which is indicated once again in the present case, in the baking chamber 7. For this purpose the upper plate 14 is height-adjustable along the vertical V relative to the lower plate 11 in order to deform or flatten by pressing and to bake the dough portion 2. After the baking process the lower plate 11 is adjusted from the interaction position into an emptying position 11 which is moved out from the baking chamber 7 at least for the most part, in which the lower plate 11 encloses an angle with the horizontal H, here for example merely of about 45° in order to bring about an independent sliding of the food product 5 into a container 15, which in the present case is configured as a food drawer, which can be removed from the housing front side 6 together with the finished food product. It can be seen from FIG. 1 that the upper plate 14 is located along the vertical V inside the baking chamber 7 above the lower plate 11. The lower plate 11 and the upper plate 14 are aligned parallel in the interaction position W, here in the present case as preferred horizontally. Likewise the lower plate 11 in its receiving position A is aligned horizontally and only angled or inclined in the emptying position E.

[0040] For adjustment of the lower plate 11 between its three different function positions, preferably an electromotive drive, not shown, is provided as well as a guide device 16 explained hereinafter with reference to FIGS. 1a to 5b, which guides the lower plate 11 during its adjustment movement. For this purpose, the guide device 16 comprises a link 17, in which the lower plate 11 interacts with at least one lateral guide extension 18. If required, another, here as rear guide extension 19 can be provided which is also adjustable in the link 17.

[0041] The guide device 16 comprises a diverter 20 (diverter mechanism) with a pivotally arranged diverter element 21 which is adjustable between two switching positions by means of a schematically indicated electromotive drive M, wherein in the first switching position shown in FIG. 1a, which is defined or limited by a fixed stop 22, the lower plate 11 is adjustable by means of the drive assigned to it—between the receiving position A and the interaction position W. The diverter element 21 can additionally be adjusted, here pivoted, by actuation by means of the electromagnetic drive M into a second switching position shown in FIG. 3a in which an adjustment of the lower plate 11 between the interaction position W and the (inclined) emptying position F is possible. By means of the electromotive drive M, an eccentric shaft 23 is rotatable about an axis of rotation R, wherein the diverter element 21 is connected via force transmission means 24 in an articulated manner to the eccentric shaft 23 with radial spacing from the axis of rotation R. The diverter element 21 is arranged pivotably about a fixed pivot axis S, wherein the force transmission means 24 are connected in an articulated manner to the diverter element with spacing from the pivot axis S. As will be explained in further detail subsequently (cf. FIG. 6), an (emptying) plunger 25 and a holding-down stamp 26 are additionally connected in an articulated manner to the eccentric shaft 23 or coupled adjustably so that in the preferred exemplary embodiment, the electromotive drive M is a common electromotive drive of an opening and/or emptying mechanism of the capsule-handling device 4 and the diverter 20. In addition, a locking mechanism 27 for a preferably provided capsule drawer can be actuated in an advantageous manner by means of the electromotive drive M by adjustment of the holding-down stamp 26.

[0042] The link 17 comprises a horizontal first guide portion 41 inside which the lower plate is adjustable between the receiving position A and the interaction position W and a second guide portion 42 spanning an angle thereto via which the lower plate 11 enters in the removal position E, the second guide portion 42 is configured as a dead end portion so that the lower plate 11 or the guide extension 18 must be moved back again over the same path in the direction of the interaction position W in order to leave the emptying position E again.

[0043] The force transmission means 24 is assigned a tolerance-compensating device 28 in order to compensate for system-induced tolerances in relation to the angle of rotation of the eccentric shaft 23 or to take care that these do not adversely influence the function of the diverter 20. To this end, the force transmission means 24 comprise two force-transmission elements 29, 30 arranged in alignment along the longitudinal extension thereof, which are adjustable relative to one another. The force-transmission elements 29, 30 are mounted so that they can be adjusted slidingly translationally into one another and the rectilinear sliding movement towards one another (pressure loading in the second switching position) is delimited by means of an adjustable stop 31, here configured as a screw, and the movement away from one another (tensile loading in switching position 1) is delimited by means of a tolerance-compensating spring 32. The stop 31 is, as mentioned, adjustable or adaptable whilst simultaneously varying the pre-tension of the tolerance-compensating spring 32 which is supported axially at one end on the stop 31 on the side facing away from a stroke-limiting stop surface 33 on the stop 31, wherein the stop 31 is part of the lower force-transmission element 30 in the plane of the drawing. With its other axial end the tolerance-compensating spring 32 is supported on the upper force-transmission element 29 in the plane of the drawing.

[0044] As mentioned, the diverter element 21 in the diagram according to FIGS. 1a and 1b is located in the first switching position. The lower plate 11 cooperates with the diverter element 21 during adjustment of the lower plate 11 via the guide extension 18. In the diagram in the operating state according to FIG. 1a, the lower plate 11 is initially still located in the receiving position A and is the adjusted in the direction of the interaction position W. The eccentric shaft or the articulated connection 34 between the force transmission means 24 and a radial eccentric extension 35 of the eccentric shaft 23 is located, here for example in the clockwise direction in its end position 36. The diverter element 21 (switch element) of the diverter 20 lies horizontally in the guide device and is supported on the step 22. The force transmission means 24 are tensile loaded, as indicated by the double arrow in FIG. 1a, which has the result that the tolerance-compensating spring 31 is compressed between the force-transmission elements 29, 30 in tolerance compensation or is further tensioned. The diverter element 21 is held via the force transmission means 24 and the spring force of the tolerance-compensating spring of the tolerance-compensating device 28 in the depicted (horizontal) first switching position.

[0045] In FIG. 1c the tolerance-compensating device 28 is shown enlarged again, wherein for easier differentiation of the parts which are adjustable relative to one another, the lower force-transmission element 30 in the plane of the drawing is coloured grey in the same way as the stop 31 configured as a screw, which is arranged in a fixed position relative to this lower force-transmission element 30. The mechanism of action between the force-transmission elements 29, 30 can be identified, which has the effect that under a tensile force loading the tolerance-compensating spring 32 is compressed.

[0046] In FIGS. 2a and 2b the first switching position of the diverter element 21 is shown again but here the articulated connection 34 between the force Transmission means 24 and the eccentric 35 is 5° at one position 37 in the clockwise direction before the end position 36. The diverter element 21 lies horizontally and is supported on the stop 22 similarly to the state according to FIG. 1a. The force transmission means 24 are tensile-loaded which has the result that the spring is compressed between the force-transmission elements 29, 30 but as a result of the upstream rotational or tolerance situation of the eccentric shaft somewhat less strongly than in the desired target position according to FIG. 1a. Nevertheless, the switching situation or the switching position 1 is ensured. For this purpose reference is made to the enlarged view according to FIG. 2. The arrow shown there indicates the tolerance compensation.

[0047] FIGS. 3a and 3b show the second switching position of the diverter element 21 which now blocks the path back into The receiving position and during an adjustment movement of The lower plate 11, deflects this into the sloping emptying position E due to interaction with the guide extension. In order to reach this second switching position, the eccentric shaft 23 was adjusted by means of the electromotive drive in the anticlockwise direction into the depicted position 38. In this case, the force-transmission elements 29, 30 are moved towards one another until the stop 31 (in the present case, for example, the screw) abuts against an opposite stop position 38 of the upper force-transmission element 29 in the plane of the drawing. The adjustable stop 31 enables the length of the two divided force transmission means in this exemplary embodiment or the two force-transmission elements 29, 30 in this second switching state and therefore the oblique position of the diverter element to be adapted.

[0048] It can be seen from FIG. 3a that as a result of the configuration of the second guide portion 42 as a dead end portion, the lower plate 11 must be conveyed back in the same direction in order to leave the emptying position F again.

[0049] In the exemplary embodiment according to FIGS. 4a and 4b the eccentric shaft 23 was moved further in the anticlockwise direction into circumferential position 40 which forms a further end position to the end position described in connection with FIG. 1. The diverter element 21 again lies horizontally so that the lower plate 11 can be adjusted from the interaction position W back into the receiving position A.

[0050] The diverter element 21 is again supported on the end stop 22 which in this respect defines the second switching posit ion. The force transmission means 24 are tensile-loaded which has the result that the tolerance-compensating spring 32 is compressed between the force-transmission elements 29, 30 and thus further tensioned. The diverter element 21 of the diverter 20 is held via the spring force of the tolerance-compensating spring of the tolerance-compensating device 28 in the second switching position.

[0051] FIGS. 5a and 5b show by analogy with FIG. 2a a tolerance-induced possible operating situation in which the eccentric shaft 23 is located approximately 5° in front of the end position 40 according to FIG. 4a in a circumferential position 43.

[0052] Here also the force application means are tensile-loaded and the spring compressed but less strongly than in the actual target position according to FIG. 4a and FIG. 4b.

[0053] FIG. 6 shows a schematic view of the eccentric shaft 23 which can be rotated by means of the electromotive drive M and thereby not only switches the diverter element 21 but also moves the plunger 25 and the holding-down stamp 26 which is part of the capsule-handing device 4.

[0054] FIGS. 7a and 7b show the force-transmission device 4 in different views. Shown is the eccentric shaft 23 which can be rotated by the electromotive drive M not shown, by means of which via articulated levers the plunger 25 can be moved relative to the holding-down stamp 26 guided translationally adjustably therein in order to adjust with the holding-down stamp a capsule 12 for opening the same against a blade which is not shown and in particular to then. press out the dough portion from the capsule 12 by means of the plunger 25.

REFERENCE LIST

[0055] 1 Food-preparation apparatus [0056] 2 Dough portion [0057] 3 Housing [0058] 4 Capsule-handling device [0059] 5 Foodstuff/food product [0060] 6 Housing front side [0061] 7 Baking chamber [0062] 7 Baking chamber housing [0063] 9 Base side [0064] 10 Supporting surface [0065] 11 Lower plate [0066] 12 Capsule [0067] 13 Housing rear side [0068] 14 Upper plate [0069] 15 Container [0070] 16 Guide device [0071] 17 Link [0072] 18 Guide extension [0073] 19 Further guide extension [0074] 20 Diverter [0075] 21 Diverter element [0076] 22 Stop for diverter element [0077] 23 Eccentric shaft [0078] 24 Force transmission means [0079] 25 Plunger [0080] 26 Holding-down stamp [0081] 27 Locking mechanism [0082] 28 Tolerance-compensating device [0083] 29 Force-transmission element [0084] 30 Force-transmission element [0085] 31 Stop of tolerance-compensating device [0086] 32 Tolerance-compensating spring [0087] 33 Stop surface of stop 31 [0088] 34 Articulated connection [0089] 35 Eccentric extension [0090] 36 End position in clockwise direction [0091] 37 Circumferential position before target end position [0092] 38 Circumferential position in second switching position [0093] 39 Stop counter position [0094] 40 End position in anticlockwise direction [0095] 41 First guide portion [0096] 42 Second guide portion [0097] 43 Circumferential position before target end position [0098] 44 Articulated lever [0099] 45 Articulated lever [0100] 46 Base surface [0101] A Receiving position [0102] W Interaction position [0103] E Emptying position [0104] M Electromotive drive [0105] R Axis of rotation of eccentric shaft [0106] S Pivot axis