Microwave device for heating cold chain box lunch

Abstract

The utility model relates to the technical field of microwave equipment, and provides a microwave device for heating cold chain box lunch, which comprises a microwave heating box, a base arranged in a bottom cavity of the microwave heating box and a driving mechanism for driving the base to rotate, and the top surface of the base is provided with a central groove and a plurality of rotating grooves annularly distributed around the central groove. A tray is arranged in each rotating groove, and a placing disc for placing box lunch is arranged in each tray; according to the utility model, the motor works, the gear is meshed with the first annular tooth surface to drive the disc to rotate, and then the trays and the placing discs in the rotating grooves are driven to circumferentially rotate around the central groove as the center; the tray and the placing tray are driven to rotate under the meshing of the third annular tooth surface and the second annular tooth surface on the outer wall of the first fixing tray, and compared with the prior art, the movement range of cold chain box lunch is greatly enlarged, and then the heating efficiency of the box lunch is improved.

Description

Technical Field

[0001] This utility model relates to the field of microwave equipment technology, specifically to a microwave device for heating cold chain boxed meals. Background Technology

[0002] Cold chain boxed meals are a new type of catering service that utilizes industrialized processing in central kitchens, modern cold chain logistics distribution, and on-site secondary processing and reheating. Cold chain boxed meals are commonly used for passenger meals on high-speed trains, regular trains, and airplanes. They typically require microwave heating before consumption.

[0003] Microwave ovens work by using microwaves to heat food. Microwaves can penetrate the surface of food and act directly on the water molecules inside, causing them to vibrate and generate heat. However, because microwaves form standing waves within the oven cavity, the energy density varies in different areas—some areas have high energy, while others have low energy. If the food remains stationary, uneven heating may occur. Therefore, turntable microwave ovens are more common, such as the microwave oven disclosed in patent CN202521666U, which includes an oven body with a cooking cavity and a food tray placed inside the cooking cavity.

[0004] However, existing turntable microwave ovens still have the following problems: When heating cold chain meals, existing turntable microwave ovens only rotate the cold chain meals on the turntable by a motor. Since the range of motion of the cold chain meals is relatively limited, uneven heating is likely to occur due to insufficient heating effect, which affects the food's edibility. This increases the heating time and affects the efficiency of meal service. Utility Model Content

[0005] This invention proposes a microwave device for heating cold chain boxed meals, which solves the problem of the relatively limited range of motion of cold chain boxed meals in the prior art.

[0006] The technical solution of this utility model is as follows: A microwave device for heating cold chain boxed meals includes a microwave heating box, a base disposed in the bottom cavity of the microwave heating box, and a drive mechanism for driving the base to rotate. The top surface of the base is provided with a central groove and several rotating grooves arranged in a ring around the central groove. Each rotating groove is provided with a tray, and the tray is provided with a placement plate for placing boxed meals. The central groove is provided with a transmission mechanism that drives the tray to rotate in the rotating groove when the base rotates. The bottom of the tray is provided with a lifting mechanism that reciprocates to press the placement plate in cooperation with the transmission mechanism. The placement plate is elastically connected to the tray by a spring.

[0007] Preferably, the base includes a disc, and a first rotating cylinder rotatably connected to the microwave heating box is fixed to the bottom of the disc. The inner wall of the first rotating cylinder is provided with a first annular toothed surface.

[0008] Preferably, the driving mechanism includes a motor, which is fixed to the bottom cavity of the microwave heating box, and the output end of the motor is fixed with a gear that meshes with the first annular tooth surface.

[0009] Preferably, the outer wall of the tray is provided with a second annular toothed surface, and the bottom of the tray is fixed with a second rotating cylinder that is rotatably connected to the base.

[0010] Preferably, the outer side of the placement tray is provided with a protrusion that slides vertically with the tray.

[0011] Preferably, the transmission mechanism includes a fixed column, the lower end of which is fixed to the microwave heating box, the upper end of which passes through the base and is fixed with a first fixed plate located in the central groove, the outer wall of the first fixed plate is provided with a third annular tooth surface that meshes with the second annular tooth surface, a second fixed plate is fixed to the outside of the fixed column, and the upper surface of the second fixed plate is provided with a plurality of annularly distributed protrusions.

[0012] Preferably, the lifting mechanism includes a top rod, the top end of which is connected to the tray and spring by a second rotating cylinder and fixedly connected to the placement tray. A ball sleeve is fixed to the lower end of the top rod, and a rolling ball is embedded in the inner bottom of the ball sleeve.

[0013] Preferably, the ball abuts against the upper surface of the second fixed disk under the elastic force of the spring, and the protrusion on the upper surface of the second fixed disk is on the path of the ball rotating around the fixed post.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the motor operates, and the gear meshes with the first annular tooth surface to drive the disc to rotate, thereby driving the trays and placement trays in each rotating slot to rotate circumferentially around the central slot. During this process, since the transmission mechanism is fixed, the trays and placement trays are driven to rotate by the meshing of the third annular tooth surface and the second annular tooth surface on the outer wall of the first fixed disc. Compared with the prior art, this greatly increases the range of motion of the cold chain boxed meals, thereby improving the heating efficiency of the boxed meals.

[0016] 2. During the rotation and self-rotation of the placement tray of this utility model, the rolling ball abuts against the upper surface of the second fixed plate under the elastic force of the spring, and the protrusion on the upper surface of the second fixed plate is on the path of the rolling ball rotating around the fixed column. When the protrusion contacts the rolling ball, the rolling ball is pressed by the protrusion and can lift the placement tray through the top rod, so that the placement tray is lifted upward relative to the tray under the sliding limit of the protrusion. When the protrusion and the rolling ball are separated, the tray can fall downward relative to the placement tray under the elastic force of the spring, thereby further improving the microwave heating efficiency of the boxed meal. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a microwave device for heating cold chain boxed meals proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the base structure proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the base proposed in this utility model from another perspective;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the base proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the half-section structure of the base proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the half-section structure of the tray and placement plate proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the transmission mechanism structure proposed in this utility model;

[0025] In the diagram: 1. Microwave heating box; 2. Base; 21. Disc; 22. First rotating cylinder; 23. Central groove; 24. Rotating groove; 25. First annular toothed surface; 3. Tray; 31. Second annular toothed surface; 32. Second rotating cylinder; 4. Placement tray; 41. Protrusion; 5. Drive mechanism; 51. Motor; 52. Gear; 6. Transmission mechanism; 61. Fixed column; 62. First fixed plate; 63. Third annular toothed surface; 64. Second fixed plate; 65. Protrusion; 7. Lifting mechanism; 71. Top rod; 72. Ball sleeve; 73. Rolling ball; 8. Spring. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] Please see Figure 1 and Figure 2This utility model provides a technical solution: a microwave device for heating cold chain boxed meals, including a microwave heating box 1, a base 2 disposed in the bottom cavity of the microwave heating box 1, and a drive mechanism 5 for driving the base 2 to rotate. The top surface of the base 2 is provided with a central groove 23 and a plurality of rotating grooves 24 arranged in a ring around the central groove 23. Each rotating groove 24 is provided with a tray 3, and the tray 3 is provided with a placement plate 4 for placing boxed meals. The central groove 23 is provided with a transmission mechanism 6 that drives the tray 3 to rotate in the rotating groove 24 when the base 2 rotates. The bottom of the tray 3 is provided with a lifting mechanism 7 that reciprocates to press the placement plate 4 in cooperation with the transmission mechanism 6. The placement plate 4 is elastically connected to the tray 3 by a spring 8.

[0028] Please see Figure 2 , Figure 3 and Figure 4 The base 2 includes a disc 21. The bottom of the disc 21 is fixed with a first rotating cylinder 22 rotatably connected to the microwave heating box 1. The inner wall of the first rotating cylinder 22 is provided with a first annular toothed surface 25. The drive mechanism 5 includes a motor 51. The motor 51 is fixed to the bottom cavity of the microwave heating box 1. The output end of the motor 51 is fixed with a gear 52 that meshes with the first annular toothed surface 25. During the microwave heating process, the motor 51 is turned on to work synchronously. The disc 21 is driven to rotate by the meshing of the gear 52 with the first annular toothed surface 25, which in turn drives the trays 3 and the placement trays 4 in each rotating groove 24 to rotate circumferentially around the central groove 23.

[0029] Please see Figure 4 and Figure 6 The outer wall of the tray 3 is provided with a second annular toothed surface 31. The bottom of the tray 3 is fixed with a second rotating cylinder 32 that is rotatably connected to the base 2. During the circumferential rotation of the tray 3 and the placement tray 4 in each rotating groove 24 around the central groove 23, since the transmission mechanism 6 is fixed, the tray 3 and the placement tray 4 are driven to rotate by the meshing of the third annular toothed surface 63 on the outer wall of the first fixed plate 62 and the second annular toothed surface 31, thereby improving the heating efficiency of the boxed meal.

[0030] It should be noted that the outer side of the placement tray 4 is provided with a protrusion 41 that slides vertically with the tray 3, which is used to limit the sliding of the placement tray 4.

[0031] Please see Figure 6 and Figure 7The transmission mechanism 6 includes a fixed column 61, the lower end of which is fixed to the microwave heating box 1. The upper end of the fixed column 61 passes through the base 2 and is fixed with a first fixed plate 62 located in the central groove 23. The outer wall of the first fixed plate 62 is provided with a third annular tooth surface 63 that meshes with the second annular tooth surface 31. A second fixed plate 64 is fixed to the outside of the fixed column 61. The upper surface of the second fixed plate 64 is provided with several annularly distributed protrusions 65. The lifting mechanism 7 includes a lifting rod 71. The top end of the lifting rod 71 passes through the tray 3 and the spring 8 through the second rotating cylinder 32 and is fixedly connected to the placement tray 4. The lower end of the lifting rod 71 is fixed with a ball sleeve 72. A ball 73 is embedded in the bottom inner side of the 2. During the rotation and rotation of the placement tray 4, the ball 73 abuts against the upper surface of the second fixed tray 64 under the elastic force of the spring 8. The protrusion 65 on the upper surface of the second fixed tray 64 is on the path of the ball 73 rotating around the fixed column 61. When the protrusion 65 contacts the ball 73, the ball 73 is pressed by the protrusion 65 and can lift the placement tray 4 through the push rod 71, so that the placement tray 4 is lifted upward relative to the tray 3 under the sliding limit of the protrusion 41. When the protrusion 65 and the ball 73 are separated, the tray 3 can fall downward relative to the placement tray 4 under the elastic force of the spring 8.

[0032] The working principle and usage process of this utility model are as follows: When in use, the cold chain boxed meal to be heated is placed in the placement tray 4 of each rotating slot 24. During the microwave heating process, the motor 51 is turned on to work synchronously. The gear 52 meshes with the first annular tooth surface 25 to drive the disc 21 to rotate, thereby driving the tray 3 and placement tray 4 in each rotating slot 24 to rotate circumferentially around the central slot 23. During this process, since the transmission mechanism 6 is fixed, the tray 3 and placement tray 4 are driven to rotate by the meshing of the third annular tooth surface 63 on the outer wall of the first fixed disc 62 with the second annular tooth surface 31, thereby improving the heating efficiency of the boxed meal.

[0033] During the above process, the rolling ball 73 abuts against the upper surface of the second fixed plate 64 under the elastic force of the spring 8, and the protrusion 65 on the upper surface of the second fixed plate 64 is on the path of the rolling ball 73 rotating around the fixed post 61. When the protrusion 65 contacts the rolling ball 73, the rolling ball 73 is pressed by the protrusion 65 and can lift the placement plate 4 through the top rod 71, so that the placement plate 4 is lifted upward relative to the tray 3 under the sliding limit of the protrusion 41. When the protrusion 65 and the rolling ball 73 are no longer in contact, the tray 3 can fall downward relative to the placement plate 4 under the elastic force of the spring 8, thereby further improving the microwave heating efficiency of the boxed meal.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A microwave device for heating cold-chain lunch boxes, comprising a microwave heating box (1), a base (2) arranged in the bottom cavity of the microwave heating box (1), and a driving mechanism (5) for driving the base (2) to rotate, characterized in that, The top surface of the base (2) is provided with a central groove (23) and a plurality of rotating grooves (24) annularly distributed around the central groove (23), each rotating groove (24) is provided with a tray (3), and the tray (3) is provided with a placing disc (4) for placing a lunch box, the central groove (23) is provided with a transmission mechanism (6) for driving the tray (3) to rotate in the rotating groove (24) when the base (2) rotates, the bottom of the tray (3) is provided with a jacking mechanism (7) cooperating with the transmission mechanism (6) to reciprocatingly press the placing disc (4), and the placing disc (4) is elastically connected with the tray (3) through a spring (8).

2. The cold-chain bento heating microwave device according to claim 1, characterized by, The base (2) comprises a disc (21), and the bottom of the disc (21) is fixed with a first rotating cylinder (22) rotatably connected to the microwave heating box (1), and the inner wall of the first rotating cylinder (22) is provided with a first annular tooth surface (25).

3. The cold-chain bento heating microwave device according to claim 2, characterized by, The driving mechanism (5) comprises a motor (51), the motor (51) is fixed to the bottom cavity of the microwave heating box (1), and the output end of the motor (51) is fixed with a gear (52) engaged with the first annular tooth surface (25).

4. The cold-chain bento heating microwave device according to claim 1, characterized by, The outer wall of the tray (3) is provided with a second annular tooth surface (31), and the bottom of the tray (3) is fixed with a second rotating cylinder (32) rotatably connected to the base (2).

5. The cold-chain bento heating microwave device according to claim 1, characterized by, The outer side of the placing disc (4) is provided with a convex strip (41) vertically slidingly matched with the tray (3).

6. The cold-chain bento heating microwave device according to claim 4, characterized by, The transmission mechanism (6) comprises a fixed column (61), the lower end of the fixed column (61) is fixed to the microwave heating box (1), the upper end of the fixed column (61) penetrates through the base (2) and is fixed with a first fixed disc (62) in the central groove (23), the outer wall of the first fixed disc (62) is provided with a third annular tooth surface (63) engaged with the second annular tooth surface (31), the outer side of the fixed column (61) is fixed with a second fixed disc (64), and the upper surface of the second fixed disc (64) is provided with a plurality of annularly distributed protrusions (65).

7. The cold-chain bento heating microwave device according to claim 6, characterized by, The jacking mechanism (7) comprises a jacking rod (71), the top end of the jacking rod (71) penetrates through the tray (3), the spring (8) and the placing disc (4) and is fixedly connected with the placing disc (4) by the second rotating cylinder (32), the lower end of the jacking rod (71) is fixed with a ball sleeve (72), and the bottom inner side of the ball sleeve (72) is embedded with a rolling ball (73).

8. The cold-chain bento heating microwave device according to claim 7, characterized by, The rolling ball (73) is in contact with the upper surface of the second fixed disc (64) under the elastic force of the spring (8), and the protrusions (65) on the upper surface of the second fixed disc (64) are located on the path of the rolling ball (73) rotating around the fixed column (61).

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