CN212165578U

CN212165578U - Cooking device

Info

Publication number: CN212165578U
Application number: CN202020456243.7U
Authority: CN
Inventors: 符海明; 叶海涛; 刘中杰
Original assignee: Guangdong Zhiyuan Robot Technology Co Ltd
Current assignee: Guangdong Zhiyuan Robot Technology Co Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-12-18
Anticipated expiration: 2030-04-01

Abstract

The utility model relates to a cooking device. The cooking device comprises a first rack, a feeding mechanism, a cooking mechanism, a plate falling mechanism and a dish receiving mechanism. Specifically, the feeding mechanism comprises a hopper and a first overturning assembly. The hopper is rotatably arranged on the first rack through the first overturning assembly. The cooking mechanism comprises a heating container and a second overturning assembly, and the heating container is rotatably arranged on the upper first rack through the second overturning assembly. The plate falling mechanism is arranged on the first rack and used for supplying the tableware. The dish receiving mechanism comprises a bracket and a first driving assembly connected with the bracket, the first driving assembly is arranged on the first rack, the bracket is used for clamping tableware, and the first driving assembly is used for driving the bracket to reciprocate between the dish falling mechanism and the cooking mechanism. Above-mentioned cooking device is multiple functional, has improved cooking device's automation, has reduced the cost of labor.

Description

Cooking device

Technical Field

The utility model relates to an automated production equipment technical field especially relates to a cooking device.

Background

Along with the improvement of living standard of people, the dining mode of people is changed. More and more people choose to have meals outside. However, the traditional restaurants and hotels have low automation level, and the operations of ordering, cooking, passing dishes, serving and the like need to be finished manually. With the trend of aging of population becoming more severe, cooks, waiters and the like must rise the water with human cost in the future, and an automatic production mode is the development direction of restaurants and hotels.

With the development of automatic production equipment, some automatic stir-frying equipment has appeared, but the stir-frying equipment is often huge and complex in equipment, generally only has a single stir-frying function, and is difficult to fully automatically complete the whole cooking process.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a cooking apparatus for solving the problem of how to implement an automatic cooking process.

A cooking device, comprising:

a first frame;

the feeding mechanism comprises a hopper and a first overturning assembly, and the hopper is rotatably arranged on the first rack through the first overturning assembly;

the cooking mechanism comprises a heating container and a second overturning assembly, and the heating container is rotatably arranged on the first rack through the second overturning assembly;

a tray falling mechanism provided on the first rack for supplying the tableware; and the number of the first and second groups,

the dish receiving mechanism comprises a bracket and a first driving assembly connected with the bracket, the first driving assembly is arranged on the first rack, the bracket is used for clamping tableware, and the first driving assembly is used for driving the bracket to move back and forth between the dish falling mechanism and the cooking mechanism.

Above-mentioned cooking device can realize automatic input raw materials through throwing the material mechanism, heats the raw materials and turns over the stir-fry through the heating container of culinary art mechanism, can pour the dish in the heating container through second upset subassembly. Can realize supplying the dish automatically through mechanism of falling a set, realize getting the dish automatically and accept the dish that heating container poured out through receiving dish mechanism, can also realize automatic meal through transporting of receiving dish mechanism at last. The cooking device is complete in function, can fully automatically complete the whole cooking processes of feeding, heating, stir-frying, plate supplying, dish receiving, serving and the like, improves the automation of the cooking device, and reduces the labor cost.

In one embodiment, the first rack comprises a shell and a support frame arranged on the shell, the feeding mechanism and the cooking mechanism are arranged on the support frame, and the tray falling mechanism and the dish receiving mechanism are arranged on the shell.

In one embodiment, a water tank is arranged on the shell, the water tank is communicated with a drain pipe and is arranged below the heating container, and a cleaning spray head is arranged in the water tank.

In one embodiment, the cooking device further comprises a liquid adding mechanism, the liquid adding mechanism is arranged on the supporting frame, and the liquid adding mechanism is used for adding liquid materials into the heating container.

In one embodiment, the liquid adding mechanism comprises:

a bin for storing the liquid material;

the pump body is communicated with the material box;

the liquid feeding pipe, the liquid feeding pipe with the pump body intercommunication, and the liquid feeding pipe is equipped with the orientation heating container's discharge gate.

In one embodiment, the first flipping component comprises:

the first driving piece is fixedly arranged on the supporting frame;

the bearing block is fixedly arranged on the support frame, and a bearing connected with the output shaft of the first driving piece is arranged in the bearing block; and the number of the first and second groups,

the linking arm, the linking arm is including being first pole and second pole of contained angle connection, first pole with the output shaft fixed connection of first driving piece, the second pole with hopper fixed connection.

In one embodiment, the second flipping component comprises:

the second driving piece is fixedly arranged on the supporting frame;

the driving wheel is connected with the output shaft of the second driving piece;

the rotating shaft is rotatably arranged on the supporting frame and is connected with the heating container;

the driven wheel is arranged on the rotating shaft; and the number of the first and second groups,

the synchronous belt is sleeved on the driving wheel and the driven wheel.

In one embodiment, the second flipping component comprises:

the second driving piece is fixedly arranged on the supporting frame;

a first gear connected with the output shaft of the second driving member;

the rotating shaft is rotatably arranged on the supporting frame and is connected with the heating container; and the number of the first and second groups,

a second gear provided on the rotation shaft and engaged with the first gear.

In one embodiment, the tray falling mechanism comprises:

the supporting seat is fixedly arranged on the shell;

the tray falling device is arranged on the supporting seat, and a space allowing the bracket to pass through is formed between the tray falling device and the shell; and the number of the first and second groups,

and the third driving piece is in driving connection with the plate falling device and is used for enabling the plate falling device to release the tableware one by one.

In one embodiment, the first drive assembly comprises:

the sliding rail is arranged on the shell;

the sliding block is arranged on the sliding rail in a sliding mode and is connected with the bracket; and the number of the first and second groups,

and the fourth driving part is connected with the sliding block and is used for driving the sliding block to reciprocate along the sliding rail.

In one embodiment, the tray is further provided with a first sensor for detecting the dishes, and the first sensor is electrically connected with the fourth driving member.

In one embodiment, the bracket is provided with a through hole for accommodating the tableware, and the bracket is further provided with a notch which penetrates through the hole wall of the through hole.

Drawings

FIG. 1 is a schematic structural diagram of a cooking device in a feeding state according to an embodiment;

FIG. 2 is a schematic structural view of the cooking device shown in FIG. 1 in a pouring state;

FIG. 3 is a schematic view of the cooking device shown in FIG. 1 from another perspective;

fig. 4 is a partial enlarged view of a portion a shown in fig. 3;

FIG. 5 is a schematic structural diagram of a dish receiving mechanism according to an embodiment;

fig. 6 is a schematic structural diagram of a tray falling mechanism according to an embodiment.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a cooking device in an embodiment of the present invention, and the cooking device provided in an embodiment of the present invention includes a first frame 10, a feeding mechanism 20, a cooking mechanism 30, a tray falling mechanism 50, and a dish receiving mechanism 40. Specifically, the feeding mechanism 20 includes a hopper 21 and a first flipping assembly 22. The hopper 21 is rotatably provided on the first frame 10 by a first flipping unit 22. The cooking mechanism 30 includes a heating container 31 and a second flipping unit 32, and the heating container 31 is rotatably disposed on the upper first frame 10 by the second flipping unit 32. A tray dropping mechanism 50 is provided on the first frame 10, and the tray dropping mechanism 50 is used to supply the dishes. The dish receiving mechanism 40 includes a bracket 41 and a first driving assembly 42 connected to the bracket 41, the first driving assembly 42 is disposed on the first housing 10, the bracket 41 is used for taking dishes, and the first driving assembly 42 is used for driving the bracket 41 to reciprocate between the plate falling mechanism 50 and the cooking mechanism 30.

Specifically, the hopper 21 of the feeding mechanism 20 is used for storing the material to be cooked, and as shown in fig. 1, the material in the hopper 21 can be poured into the cooking mechanism 30 through the first turnover assembly 22. A rotatable heating inner container is arranged in a heating container 31 of the cooking mechanism 30, and the heating container 31 is used for heating and stir-frying materials. As shown in fig. 2, the heating container 31 is rotatably installed on the first housing 10 by the second flipping unit 32, so that the cooked dishes can be discharged from the heating container 31 by rotating the heating container 31 by a certain angle, for example, by rotating the heating container 31 by about 150 ° by the second flipping unit 32. The bracket 41 of the dish receiving mechanism 40 can obtain the dishes from the plate falling mechanism 50, the dishes are conveyed to the lower part of the heating container 31 by the first driving component 42 and move along with the rotation of the heating container 31, so that the dishes poured out of the heating container 31 accurately fall into the dishes to complete the dish receiving process, and finally the dishes are conveyed towards the direction far away from the cooking mechanism 30 by the first driving component 42 to be taken away by a waiter, so that the dishes are taken out.

The cooking device can automatically feed raw materials through the feeding mechanism 20, the raw materials are heated and stir-fried through the heating container 31 of the cooking mechanism 30, and dishes in the heating container 31 can be poured out through the second overturning component 32. The automatic dish supply can be realized through the dish falling mechanism 50, the automatic dish taking and the receiving of dishes poured out of the heating container 31 are realized through the dish receiving mechanism 40, and the automatic meal delivery can also be realized through the conveying of the dish receiving mechanism 40. The cooking device is complete in function, can fully automatically complete the whole cooking processes of feeding, heating, stir-frying, plate supplying, dish receiving, serving and the like, improves the automation of the cooking device, and reduces the labor cost. The cooking device is simple in structure, compact in arrangement, small in occupied area, low in manufacturing cost and applicable to places such as restaurants, hotels, dining halls and closed containers.

Referring to fig. 1 and 2, in some embodiments, the first housing 10 includes a housing 11 and a support frame 12 disposed on the housing 11, the feeding mechanism 20 and the cooking mechanism 30 are disposed on the support frame 12, and the dish falling mechanism 50 and the dish receiving mechanism 40 are disposed on the housing 11. Further, the feeding mechanism 20 and the cooking mechanism 30 are suspended from the supporting frame 12, so that when the first flipping unit 22 rotates the hopper 21, the material in the hopper 21 can be poured into the heating container 31 under the gravity and centrifugal force. When the second flipping unit 32 rotates the heating container 31, the dishes can fall into the dishes held by the lower dish receiving mechanism 40 by gravity.

Further, a water tank 111 is provided in the housing 11, the water tank 111 is connected to a drain pipe, the water tank 111 is provided below the heating container 31, and a cleaning head is provided in the water tank 111. The washing head is used to spray high-pressure water jets to clean the cooking-completed heating vessel 31. Specifically, after the dishes are poured out from the heating container 31, the second turning assembly 32 can continue to turn the heating container 31 to 180 ° so that the opening of the heating container 31 faces the cleaning nozzle, the cleaning nozzle can spray high-pressure water into the heating container 31 to clean the heating inner container of the heating container 31, and the sewage generated by cleaning can flow into the water tank 111 and be discharged along the drain pipe. Preferably, the cleaning nozzle can selectively spray the mixed liquid or the clean water with the detergent, thereby improving the cleaning ability and ensuring the cleanness and sanitation of the heating container 31.

Referring to fig. 3 and 4, in some embodiments, the cooking device further comprises a filling mechanism 60, the filling mechanism 60 is disposed on the support stand 12, and the filling mechanism 60 is used for filling the liquid material into the heating container 31. Preferably, the liquid adding mechanism 60 is used for adding liquid seasonings such as oil, soy sauce, cooking wine, clean water, etc. to the heating container 31. Specifically, the charging mechanism 60 includes a hopper (not shown), a pump body 61, and a charging pipe 62. The workbin is used for depositing liquid material. The pump body 61 communicates with the tank. The filler pipe 62 communicates with the pump body 61, and the filler pipe 62 is provided with a discharge port facing the heating container 31. Preferably, the feed box is used for storing liquid materials such as oil or water, the pump body 61 is a peristaltic pump, the liquid feeding pipe 62 is communicated to the pump body 61 through a soft rubber tube, and a feeding hole of the pump body 61 is connected into the feed box, so that the oil or water in the feed box can be pumped out through the pump body 61 and is added into the heating container 31 through the liquid feeding pipe 62. Preferably, the cooking device is provided with at least two liquid adding mechanisms 60, different liquid adding mechanisms 60 are respectively used for putting different liquid materials, for example, the cooking device is provided with a plurality of liquid adding mechanisms 60, bins of the liquid adding mechanisms 60 are respectively used for storing oil, water, soy sauce, cooking wine and the like, and different liquid materials can be respectively added into the heating container 31 through the pump body 61 and the liquid adding pipes 62 which are independent of each other.

Specifically, in conjunction with fig. 3 and 4, in some embodiments, the first flipping assembly 22 includes a first drive 221, a bearing block 222, and a connecting arm 223. The first driving member 221 is fixedly disposed on the supporting frame 12. The bearing seat 222 is fixedly disposed on the support frame 12, and a bearing connected to the output shaft of the first driving member 221 is disposed in the bearing seat 222. By connecting the output shaft of the first driver 221 with the bearing, the rotation of the output shaft of the first driver 221 is made smoother. Further, the connecting arm 223 includes a first rod 2231 and a second rod 2232 connected at an included angle, the first rod 2231 is fixedly connected to the output shaft of the first driving member 221, and the second rod 2232 is fixedly connected to the hopper 21. Therefore, the first driving member 221 drives the connecting arm 223 to rotate, so as to drive the hopper 21 to turn over, and the material in the hopper 21 is put into the heating container 31. Preferably, the first rod 2231 and the second rod 2232 of the connecting arm 223 are disposed at a right angle, that is, the connecting arm 223 is in an "L" shape, so as to extend the turning radius of the hopper 21 and avoid the hopper 21 interfering with the supporting frame 12 during the turning process. Preferably, the first driving member 221 is a motor. The hopper 21 is connected with the connecting arm 223 by welding, or the bucket is detachably connected with the connecting arm 223 by screws or other methods.

Referring to fig. 1, in particular, the second flipping unit 32 includes a second driving member 321, a driving wheel 322, a rotating shaft 325, a driven wheel 324, and a timing belt 323. Wherein the second driving member 321 is fixedly disposed on the supporting frame 12. The driver 322 is connected to the output shaft of the second driver 321. The rotation shaft 325 is rotatably provided on the support frame 12 and connected to the heating container 31. The driven wheel 324 is provided on the rotation shaft 325 so that the rotation shaft 325 can be rotated in synchronization with the driven wheel 324. Preferably, the supporting frame 12 is provided with an extension portion, and the heating container 31 is rotatably disposed on the extension portion by the rotating shaft 325, so that the heating container 31 is located above the water tank 111. Further, a timing belt 323 is sleeved on the driving wheel 322 and the driven wheel 324 for transmitting the motion of the driving wheel 322. The driving wheel 322 is driven to rotate by the second driving member 321, and the driven wheel 324 is driven to rotate by the timing belt 323, so that the rotating shaft 325 rotates, thereby tilting the heating container 31 between 0 ° and 180 ° about the rotating shaft 325. Specifically, the heating container 31 is held at a position (without inclination) at an inclination of 0 ° while in the charging and heating stir-frying stages. When the dishes are cooked and need to be poured out, the second turnover assembly 32 turns the heating container 31 to an inclination angle of about 150 ° so that the dishes in the heating container 31 fall into the dishes below the heating container 31 under the action of gravity. When the heating container 31 needs to be cleaned, the second flipping unit 32 flips the heating container 31 to an inclination angle of about 180 °, so that the opening of the heating container 31 faces the water tank 111, thereby facilitating the cleaning nozzle in the water tank 111 to clean the inside of the heating container 31. Further, the method is carried out. The opening of the heating container 31 is provided with a dish pouring nozzle which can collect dishes at one position for pouring, so that the phenomenon that the dishes are scattered and poured out to cause scattering is avoided.

It should be noted that the transmission mode of the second reversing assembly 32 is not limited to the above-described synchronous pulley combination. In other embodiments, power may be transmitted in the form of gear engagement. Specifically, in another embodiment, the second flipping unit 32 includes a second driving unit 321, a first gear, a rotating shaft 325, and a second gear, wherein the second driving unit 321 is fixedly disposed on the supporting frame 12. The first gear is connected to the output shaft of the second driver 321. The rotation shaft 325 is rotatably provided on the support frame 12 and connected to the heating container 31. The second gear is provided on the rotation shaft 325, and the second gear is engaged with the first gear, so that the rotation of the heating container 31 is realized by the engagement transmission of the first gear and the second gear. Preferably, the number of teeth of the second gear is larger than that of the first gear in order to prevent dishes from being spilled due to the heating container 31 being overturned at too high a speed. It should be noted that the second flipping unit 32 can also rotate the heating container 31 through a crank and rocker mechanism, which is not described herein.

Referring to fig. 6, the tray falling mechanism 50 includes a supporting seat 51, a tray falling device 53 and a third driving member 52, wherein the supporting seat 51 is fixedly disposed on the housing 11. The tray drop 53 is provided on the support base 51, and a space for the tray 41 to pass through is formed between the tray drop 53 and the housing 11, thereby facilitating the tray 41 to receive the dishes released by the tray drop 53 from below the tray drop 53. The third driving member 52 is drivingly connected to the plate falling device 53, and the third driving member 52 is used for releasing the plate falling device 53 one by one. Specifically, the third driving member 52 can drive the gear set and the screw block inside the plate dropping device 53 to move, so that the plate dropping device 53 releases the dishes one by one. A commercially available tray drop mechanism 50 may be employed. Preferably, the connection line between the plate falling device 53 and the heating container 31 is located on the central axis of the housing 11, so that the dish receiving mechanism 40 can reach the position right below the heating container 31 for receiving dishes after taking dishes from the plate falling device 53 and moving along a straight line, thereby being convenient to control.

Further, referring to fig. 5, the first driving assembly 42 includes a sliding rail 422, a sliding block 423 and a fourth driving member 421, wherein the sliding rail 422 is disposed on the housing 11, the sliding block 423 is slidably disposed on the sliding rail 422, and the sliding block 423 is connected with the bracket 41. The fourth driving member 421 is connected to the sliding block 423, and the fourth driving member 421 is configured to drive the sliding block 423 to reciprocate along the sliding rail 422, so that the sliding block 423 is driven by the fourth driving member 421 to move, and the sliding block 423 drives the bracket 41 to move, thereby realizing the reciprocating movement of the bracket 41 in the tray drop device 53 and the heating container 31, and further completing the tray taking and receiving processes. It should be noted that the first driving assembly 42 may also be driven by a rack and pinion or directly drive the bracket 41 to move through an air cylinder, which is not described herein.

Further, when the heating container 31 is turned over to pour dishes, the position of the pouring nozzle of the heating container 31 can be changed in real time during the turning process of the heating container 31, and in order to ensure that dishes can accurately fall into the tableware, the first driving assembly 42 can drive the bracket 41 and the tableware on the bracket 41 to move along with the pouring nozzle of the heating container 31 in real time, so that the pouring nozzle is always aligned with the tableware, and the dishes are prevented from being spilled.

Further, the tray 41 is further provided with a first sensor 43 for detecting the dishes, and the first sensor 43 is electrically connected to the fourth driving member 421. Preferably, the first sensor 43 is a correlation sensor, and when the first sensor 43 detects that the dishes are dropped into the tray 41, the control system can control the fourth driving member 421 to operate to drive the dishes toward the heating container 31.

Further, with continued reference to FIG. 5, the tray 41 is provided with a through hole 411 for receiving the dishes, preferably, the diameter of the through hole 411 is slightly smaller than the maximum diameter of the dishes, so that the tray 41 can catch the dishes that are released and dropped by the plate dropper 53. The bracket 41 is further provided with a notch 412, and the notch 412 penetrates through the hole wall of the through hole 411. By providing the notch 412 in the bracket 41, the tableware can be easily taken out from the through hole 411.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A cooking device, comprising:

a first frame;

2. The cooking device of claim 1, wherein the first housing includes a housing and a support disposed on the housing, the material feeding mechanism and the cooking mechanism are disposed on the support, and the plate dropping mechanism and the dish receiving mechanism are disposed on the housing.

3. The cooking device of claim 2, wherein a water tank is provided on the housing, the water tank is connected to a drain pipe, and the water tank is provided below the heating container, and a cleaning nozzle is provided in the water tank.

4. The cooking device of claim 2, further comprising a liquid adding mechanism disposed on the support frame for adding liquid material to the heating vessel.

5. The cooking device of claim 4, wherein the liquid adding mechanism comprises:

a bin for storing the liquid material;

the pump body is communicated with the material box;

6. The cooking device of claim 2, wherein the first flip assembly comprises:

the first driving piece is fixedly arranged on the supporting frame;

7. The cooking device of claim 2, wherein the second flip assembly comprises:

the second driving piece is fixedly arranged on the supporting frame;

the synchronous belt is sleeved on the driving wheel and the driven wheel.

8. The cooking device of claim 2, wherein the second flip assembly comprises:

the second driving piece is fixedly arranged on the supporting frame;

a first gear connected with the output shaft of the second driving member;

a second gear provided on the rotation shaft and engaged with the first gear.

9. The cooking device of claim 2, wherein the fall plate mechanism comprises:

the supporting seat is fixedly arranged on the shell;

10. The cooking device of claim 2, wherein the first drive assembly comprises:

the sliding rail is arranged on the shell;

11. The cooking device of claim 10, wherein the tray is further provided with a first sensor for detecting the dishes, the first sensor being electrically connected to the fourth driver.

12. The cooking apparatus of claim 1, wherein the tray has a through hole for receiving the dish, and the tray has a notch extending through a wall of the through hole.