A heating delivery device and a bento vending machine

Abstract

The utility model discloses a kind of heating delivery device and lunch box vending machine, it is related to automatic vending machine technical field, heating delivery device includes frame, working inner bag being set in the frame, and heating mechanism and delivery mechanism being set on the working inner bag, the working inner bag has the working cavity of containing article, article in the working cavity is heated by the heating of the heating mechanism and is heated, article in the working cavity is driven by the delivery mechanism and is discharged;Wherein, the heating mechanism at least includes first microwave heating component and second microwave heating component, the output end of the first microwave heating component is connected on the top of the working inner bag, the output end of the second microwave heating component is connected on the bottom of the working inner bag.The utility model constructs bidirectional microwave heating structure on working inner bag, can effectively improve the distribution uniformity of microwave field, to realize full lunch box uniform heating in favor.

Description

Technical Field

[0001] This utility model relates to the field of automatic vending machine technology, specifically to a heating and dispensing device and a boxed meal vending machine. Background Technology

[0002] With the acceleration of urbanization and the prevalence of fast-paced lifestyles, vending machines, due to their convenience and efficiency, have been widely used in various public places such as office buildings, subway stations, schools, and communities. Among them, boxed meal vending machines, as an important carrier for providing ready-to-eat hot meals, are very popular with consumers. One of the core functions of a boxed meal vending machine is to quickly and evenly heat pre-stored refrigerated or room-temperature boxed meals and accurately and smoothly dispense the heated meals after the consumer has completed their purchase. Its heating effect and dispensing stability directly affect the consumer's dining experience and the market competitiveness of the equipment.

[0003] Currently, most boxed meal vending machines on the market are equipped with heating and dispensing devices, which integrate heating and dispensing mechanisms to effectively heat and dispense boxed meals. However, the heating method of existing boxed meal vending machines is mainly single microwave heating. The single microwave heating component is usually only set on one side of the working inner container (such as the top or bottom). The uneven distribution of the microwave field results in a large difference in heating between the upper and lower parts of the boxed meal. The area near the microwave output end is prone to overheating, while the area far away is underheated, making it impossible to achieve uniform heating of the entire box. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a heating and dispensing device and a boxed meal vending machine. By constructing a bidirectional microwave heating structure on the inner working liner, the uniformity of microwave field distribution can be effectively improved, which is conducive to achieving uniform heating of the entire boxed meal.

[0005] This utility model provides a heated dispensing device, including a frame, a working liner disposed in the frame, and a heating mechanism and a dispensing mechanism disposed on the working liner. The working liner has a working cavity for accommodating items. The items in the working cavity are heated by the heating mechanism and discharged by the dispensing mechanism. The heating mechanism includes at least a first microwave heating component and a second microwave heating component. The output end of the first microwave heating component is connected to the top of the working inner liner, and the output end of the second microwave heating component is connected to the bottom of the working inner liner.

[0006] Specifically, both the first microwave heating component and the second microwave heating component include a magnetron, a cooling fan, and a waveguide. The magnetron is fixedly mounted on the back of the working inner liner. The cooling fan is connected to the magnetron via an air duct. The output end of the magnetron is fixedly connected to the input end of the waveguide. The output end of the waveguide is connected to the working cavity.

[0007] Specifically, a microwave stirring plate is rotatably installed at the output port of the waveguide, and a first drive motor is fixedly installed on the outside of the waveguide. The output shaft of the first drive motor passes through the output port of the waveguide and is fixedly connected to the microwave stirring plate.

[0008] Specifically, the heating mechanism further includes a third microwave heating component, the output end of which is connected to the top of the working inner liner.

[0009] Specifically, the dispensing mechanism includes a dispensing push plate disposed in the working cavity and a push plate driving mechanism disposed on the back of the working inner liner, wherein the dispensing push plate is driven to move by the push plate driving mechanism. The push plate driving mechanism includes a first guide assembly, a first transmission assembly and a first reduction motor. The first guide assembly includes two symmetrically arranged support plates. One end of each of the two support plates is fixedly mounted on the back of the working inner liner, and the other end of each of the two support plates is far away from the working inner liner and suspended in the air. A guide groove is fixedly provided on one side of each support plate along its own length direction. The first transmission assembly includes a transmission shaft and two transmission racks. The transmission shaft is rotatably mounted on the back of the working inner liner based on two bearing seats and is perpendicular to the two support plates. The two transmission racks are slidably mounted in corresponding guide grooves, and one end of each transmission rack extends into the working cavity and is fixedly connected to the delivery push plate. The two ends of the transmission shaft are respectively engaged with the two transmission racks. The first geared motor is fixedly mounted on one of the support plates, and the output end of the first geared motor meshes with the transmission rack on the support plate.

[0010] Specifically, one of the support plates is provided with a front limit photoelectric sensor at one end near the working inner liner, and another of the support plates is provided with a rear limit photoelectric sensor at one end away from the working inner liner. A light-shielding plate is provided at one end of the transmission rack away from the delivery push plate. The movement path of the light-shielding plate passes through the detection window of the corresponding front limit photoelectric sensor and the detection window of the corresponding rear limit photoelectric sensor.

[0011] Specifically, the front of the working liner is provided with a shipping window, and the front of the frame is provided with a first lifting door assembly. The shipping window is opened or closed by the action of the first lifting door assembly. The side of the working liner is provided with a receiving window, and the side of the frame is provided with a second lifting door assembly. The receiving window is opened or closed by the action of the second lifting door assembly. Both the first and second lifting door assemblies include two guide rods vertically arranged in the frame, a lifting door body movably arranged on the two guide rods, a lifting motor fixedly arranged on the frame, and a pulley rotatably arranged on the frame. A winch is fixedly arranged on the output end of the lifting motor, and a rope is wound on the winch. One end of the rope passes through the pulley and is fixedly connected to the lifting door body. The winch is driven by the lifting motor to release or reel in the rope. The lifting door body rises along the two guide rods due to the pulling action of the reeled rope. When the rope is released, the lifting door body descends along the two guide rods due to its own weight.

[0012] Specifically, both ends of any of the guide rods are movably disposed in the frame based on short rods, the short rods are fixedly disposed in the frame, the axis of the short rods is perpendicular to the front of the lifting door body, and the short rods are movably disposed on the ends of the guide rods; A spring is fitted onto the short rod. The spring is located on the side of the guide rod away from the working liner. One end of the spring abuts against the guide rod, and the other end of the spring abuts against the frame.

[0013] Specifically, an upper limit photoelectric sensor and a lower limit photoelectric sensor are fixedly installed on the side frame of the lifting door. The upper limit photoelectric sensor is located above the lower limit photoelectric sensor. The movement path of the lifting door passes through the detection window of the upper limit photoelectric sensor and the detection window of the lower limit photoelectric sensor.

[0014] This utility model also provides a boxed meal vending machine, which includes a refrigerator and a heating cabinet. The refrigerator is equipped with a shelf and a conveying mechanism. The heating cabinet is equipped with at least one of the aforementioned heating and dispensing devices. The shelf conveys boxed meals to the heating and dispensing device based on the conveying mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The heating and unloading device of this utility model connects the output ends of the first microwave heating component and the output ends of the second microwave heating component to the top and bottom of the working inner liner, respectively, to form a bidirectional microwave heating structure. This allows microwaves to act synchronously on the boxed meal in the working cavity from both the top and bottom, greatly improving the uniformity of the microwave field distribution and ensuring that all parts of the boxed meal are heated evenly. This effectively solves the problems of uneven heating, local overheating, or underheating caused by the single microwave heating component set on one side in the existing system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first three-dimensional structural schematic diagram of the heating and dispensing device in an embodiment of this utility model; Figure 2 This is a side perspective view of the heating and unloading device in an embodiment of this utility model. Figure 3 This is a schematic diagram of the structure of the first microwave heating component and the second microwave heating component in the embodiments of this utility model; Figure 4 This is a top view of the heating and unloading device in an embodiment of this utility model; Figure 5 This is a second three-dimensional structural schematic diagram of the heating and dispensing device in an embodiment of this utility model; Figure 6 This is a third perspective structural diagram of the heating and unloading device in an embodiment of this utility model. Figure 7 This is a schematic diagram of the structure of the first lifting door assembly and the second lifting door assembly in an embodiment of this utility model; Figure 8 This is a three-dimensional structural diagram of the boxed meal vending machine in an embodiment of this utility model.

[0018] In the attached diagram, 100 is the frame; 101 is the guide rod; 102 is the lifting door body; 103 is the lifting motor; 104 is the pulley; 105 is the winch; 106 is the rope; 107 is the short rod; 108 is the spring; 1091 is the upper limit photoelectric sensor; 1092 is the lower limit photoelectric sensor; 110 is the first lifting door assembly; 120 is the second lifting door assembly; 200 is the working inner tank; 201 is the delivery window; 202 is the delivery window; 210 is the working cavity; 211 is the baffle; 212 is the tray; 220 is the mesh ventilation window; 300 is the heating mechanism; 301 is the magnetron; 302 is the cooling fan; 303 is the waveguide; 304 is the air duct; 305 is the micro 306. Wave stirring blade; 310. First drive motor; 320. First microwave heating assembly; 330. Second microwave heating assembly; 330. Third microwave heating assembly; 400. Dispensing mechanism; 401. Dispensing pusher plate; 402. Pusher plate driving mechanism; 410. First guide assembly; 411. Support plate; 412. Guide chute; 413. Front limit photoelectric sensor; 414. Rear limit photoelectric sensor; 420. First transmission assembly; 421. Transmission shaft; 422. Transmission rack; 423. Light shield; 430. First geared motor; 500. Blower; 10. Refrigerated cabinet; 11. Shelf; 12. Conveying mechanism; 20. Heating cabinet; 30. Heating dispensing device. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides a heated shipping device. Figure 1 A first perspective structural schematic diagram of the heated dispensing device according to an embodiment of the present invention is shown. The heated dispensing device includes a frame 100, a working inner liner 200 disposed in the frame 100, and a heating mechanism 300 and a dispensing mechanism 400 disposed on the working inner liner 200. The working inner liner 200 has a working cavity 210 for accommodating items. The items in the working cavity 210 are heated by the heating mechanism 300 and discharged by the dispensing mechanism 400. Figure 2The diagram shows a side-view perspective view of the heating and unloading device in an embodiment of the present invention. The heating mechanism 300 includes at least a first microwave heating component 310 and a second microwave heating component 320. The output end of the first microwave heating component 310 is connected to the top of the working inner liner 200, and the output end of the second microwave heating component 320 is connected to the bottom of the working inner liner 200.

[0021] The heating and dispensing device of this utility model connects the output ends of the first microwave heating component 310 and the output ends of the second microwave heating component 320 to the top and bottom of the working inner liner 200 respectively, forming a bidirectional microwave heating structure. This allows microwaves to act synchronously on the boxed meal inside the working cavity 210 from both the top and bottom, greatly improving the uniformity of the microwave field distribution and ensuring that all parts of the boxed meal are heated evenly. This effectively solves the problems of uneven heating, local overheating, or underheating caused by the single microwave heating component set on one side in the existing system.

[0022] In some specific embodiments, please refer to Figure 2 The inner top of the working inner liner 200 is provided with a baffle 211, which covers the output end of the first microwave heating component 310 connected to the top of the working inner liner 200, thus preventing oil and moisture from entering the first microwave heating component 310 when heating the boxed meal; the inner bottom of the working inner liner 200 is provided with a tray 212, which covers the output end of the second microwave heating component 320 connected to the bottom of the working inner liner 200. The tray 212 can not only support the items, but also prevent oil and moisture from entering the second microwave heating component 320.

[0023] Specifically, the baffle 211 is one of glass plate, ceramic plate, and plastic plate, and the support plate 212 is one of glass plate, ceramic plate, and plastic plate. These materials allow microwaves to penetrate and absorb very little energy, making them suitable for microwave heating cavities.

[0024] Figure 3 The diagram illustrates the structure of a first microwave heating assembly 310 and a second microwave heating assembly 320 according to an embodiment of the present invention. Both the first microwave heating assembly 310 and the second microwave heating assembly 320 include a magnetron 301, a cooling fan 302, and a waveguide 303. The magnetron 301 is fixedly mounted on the back of the working inner liner 200. The cooling fan 302 is connected to the magnetron 301 via an air duct 304. The output end of the magnetron 301 is fixedly connected to the input end of the waveguide 303, and the output end of the waveguide 303 communicates with the working cavity 210. The magnetron 301 generates microwaves, the waveguide 303 efficiently conducts the microwaves to the working inner liner 200, and the cooling fan 302 dissipates heat from the magnetron 301 through the air duct 304.

[0025] For details, please refer to Figure 3 A microwave stirring plate 305 is rotatably mounted at the output port of the waveguide 303. A first drive motor 306 is fixedly mounted on the outside of the waveguide 303. The output shaft of the first drive motor 306 passes through the output port of the waveguide 303 and is fixedly connected to the microwave stirring plate 305. The microwave stirring plate 305 rotates under the drive of the first drive motor 306, which can disperse microwaves and make the microwave energy form a dynamically changing uniform field distribution inside the working cavity 210, covering all areas of the heated object, thereby ensuring that the boxed meal is heated more evenly. The microwave stirring plate 305 is usually made of metal (such as stainless steel, brass, etc.) and is in the shape of a sheet or a fan.

[0026] Figure 4 The diagram shows a top view of the heating and unloading device in an embodiment of this utility model. The heating mechanism 300 further includes a third microwave heating component 330, the output end of which is connected to the top of the working inner liner 200. This further optimizes the top microwave field distribution. Through the synergistic effect of the first and third microwave heating components at the top, it eliminates microwave coverage blind spots (such as the top edge or corner of the lunchbox) present by a single top component, making the microwave energy distribution at the top of the working cavity 210 more balanced and avoiding insufficient heating in local areas of the lunchbox. Moreover, this improves heating uniformity redundancy. Even for lunchboxes of different sizes (such as larger sizes or irregular shapes), the multi-directional microwave field formed by the top dual components and the bottom component can still ensure that the heating differences between the upper and lower, inner and outer parts of the lunchbox are controlled within a smaller range, adapting to more diverse lunchbox shapes. In addition, this can moderately improve heating efficiency. The synergistic work of multiple components allows microwave energy to act more densely and evenly on the lunchbox, significantly shortening the overall heating time while ensuring heating uniformity.

[0027] Figure 5 This diagram shows a second three-dimensional structural schematic of the heating and dispensing device in an embodiment of the present invention. Please refer to the attached diagram for further details. Figure 1 The dispensing mechanism 400 includes a dispensing push plate 401 disposed in the working cavity 210 and a push plate driving mechanism 402 disposed on the back of the working inner liner 200. The dispensing push plate 401 is driven by the push plate driving mechanism 402 to move. The push plate drive mechanism 402 includes a first guide component 410, a first transmission component 420, and a first reduction motor 430. The first guide component 410 includes two symmetrically arranged support plates 411. One end of each of the two support plates 411 is fixedly mounted on the back of the working inner liner 200, and the other end of each of the two support plates 411 is far away from the working inner liner 200 and suspended in the air. A guide groove 412 is fixedly provided on one side of each support plate 411 along its own length direction. The first transmission assembly 420 includes a transmission shaft 421 and two transmission racks 422. The transmission shaft 421 is rotatably mounted on the back of the working inner liner 200 based on two bearing seats, and the transmission shaft 421 is perpendicular to the two support plates 411. The two transmission racks 422 are slidably mounted in corresponding guide grooves 412, and one end of each transmission rack 422 extends into the working cavity 210 and is fixedly connected to the delivery push plate 401. The two ends of the transmission shaft 421 are respectively engaged with the two transmission racks 422. The first geared motor 430 is fixedly mounted on one of the support plates 411, and the output end of the first geared motor 430 meshes with the transmission rack 422 on the support plate 411.

[0028] This significantly improves delivery stability. The layout of the delivery pusher 401, in conjunction with the back pusher drive mechanism 402, avoids spatial interference with the heating mechanism 300. Simultaneously, the two symmetrical support plates 411 and guide grooves 412 provide stable guidance for the transmission rack 422, ensuring that the delivery pusher 401 moves smoothly along a fixed trajectory, effectively preventing the lunchbox from tilting, tipping over, or jamming during delivery. Furthermore, this transmission method ensures high precision. The transmission shaft 421, rotatably mounted via bearing seats, meshes symmetrically with the two transmission racks 422, achieving balanced force distribution on both sides of the delivery pusher 401. This design avoids the offset of the delivery pusher plate 401. At the same time, the first reduction motor 430 directly meshes with the transmission rack 422 for drive, resulting in a short transmission path and low transmission loss. This allows for precise control of the pusher plate's movement speed and stroke, adapting to the pushing needs of different sized boxed meals. Furthermore, this structural layout is reasonable and highly reliable. All components of the pusher plate drive mechanism 402 (support plate 411, transmission shaft 421, and reduction motor) are integrated into the back of the working inner liner 200, without occupying the effective storage space of the working cavity 210. This ensures the normal placement of the boxed meals and facilitates the assembly and maintenance of the equipment.

[0029] For details, please refer to Figure 5One of the support plates 411 is equipped with a front limit photoelectric sensor 413 at one end near the working inner liner 200, and a rear limit photoelectric sensor 414 at one end away from the working inner liner 200. A light-shielding plate 423 is provided at one end of the transmission rack 422 away from the delivery push plate 401. The movement path of the light-shielding plate 423 passes through the detection windows of the corresponding front limit photoelectric sensor 413 and the corresponding rear limit photoelectric sensor 414. This, through the light-shielding plate 423 in conjunction with the front and rear limit photoelectric sensors 413 and 414, provides front and rear limit protection for the movement of the transmission rack 422, preventing the first reduction motor 430 from over-driving the transmission rack 422 and causing overtravel.

[0030] Figure 6 This diagram illustrates a third perspective view of the heated dispensing device in an embodiment of the present invention. The working inner liner 200 has a dispensing window 201 on its front side, and the frame 100 has a first lifting door assembly 110 on its front side. The dispensing window 201 is opened or closed by the action of the first lifting door assembly 110. (Please refer to...) Figure 1 The inner working liner 200 has a loading window 202 on its side, and the frame 100 has a second lifting door assembly 120 on its side. The loading window 202 is opened or closed by the action of the second lifting door assembly 120. Figure 7 The diagram shows the structure of the first lifting door assembly and the second lifting door assembly in an embodiment of this utility model. Please refer to the diagram for further details. Figure 5 Both the first lifting door assembly 110 and the second lifting door assembly 120 include two guide rods 101 vertically arranged in the frame 100, a lifting door body 102 movably arranged on the two guide rods 101, a lifting motor 103 fixedly arranged on the frame 100, and a pulley 104 rotatably arranged on the frame 100. A winch 105 is fixedly arranged on the output end of the lifting motor 103. A rope 106 is wound on the winch 105. One end of the rope 106 passes through the pulley 104 and is fixedly connected to the lifting door body 102. The winch 105 is driven by the lifting motor 103 to release or reel in the rope 106. The lifting door body 102 rises along the two guide rods 101 due to the pulling action of the reeled rope 106. When the rope 106 is released, the lifting door body 102 descends along the two guide rods 101 due to its own weight.

[0031] In microwave heating scenarios, sealing performance is particularly crucial. Two vertical guide rods 101 guide and limit the movement of the lifting door 102, ensuring it moves along a fixed trajectory during lifting and lowering, preventing deviation, jamming, or tilting. This ensures the lifting door 102 precisely fits the edges of the delivery window 201 and the receiving window 202, achieving a tight seal. This sealing effectively prevents heat loss from the inner working chamber 200, ensuring temperature stability of the working cavity 210 during microwave heating and reducing energy consumption. Furthermore, it eliminates microwave leakage, mitigating microwave radiation safety risks, and prevents external dust, debris, or cold air from entering the inner working chamber 200, avoiding contamination of the food or interference with the microwave field distribution, ensuring uniform microwave heating, and meeting the food processing and safety requirements of microwave heating in food vending machines.

[0032] Moreover, the drive combination of "lifting motor 103 + winch 105 + rope 106 + pulley 104" has a clear transmission path and low transmission loss. When the lifting motor 103 drives the winch 105 to wind up or release the rope 106, the pulley 104 can change the direction of the force to smoothly pull the lifting door 102 upward. When the rope 106 is released, the lifting door 102 descends by its own weight without the need for additional driving power, which greatly reduces energy consumption. In addition, this drive method is highly responsive and can quickly respond to switching commands, and can work efficiently with the microwave heating process, the delivery mechanism 400, and the receiving operation: After microwave heating is completed, the first lifting door assembly 110 can quickly rise to open the delivery window 201, avoiding a large amount of heat loss in the working inner pot 200 due to the opening and closing delay, and ensuring the temperature of the boxed meals when they are cooked; when receiving, the second lifting door assembly 120 opens quickly, reducing the time the working inner pot 200 is open, reducing the fluctuation of the environment inside the microwave heating cavity, not affecting the subsequent microwave heating effect, and not delaying the replenishment efficiency.

[0033] Specifically, a counterweight is embedded inside the lifting door body 102, which helps to improve the descent stability of the lifting door body 102. The rope 106 is a steel wire rope, which is strong and durable.

[0034] For further details, please refer to Figure 7 Both ends of any one of the guide rods 101 are movably disposed in the frame 100 based on a short rod 107. The short rod 107 is fixedly disposed in the frame 100. The axis of the short rod 107 is perpendicular to the front of the lifting door body 102. The short rod 107 is movably disposed on the end of the guide rod 101. A spring 108 is sleeved on the short rod 107. The spring 108 is located on the side of the guide rod 101 away from the working inner liner 200. One end of the spring 108 abuts against the guide rod 101, and the other end of the spring 108 abuts against the frame 100.

[0035] On the one hand, the elastic force of the spring 108 can always push the guide rod 101 towards the working inner liner 200, thereby causing the lifting door 102 to fit tightly against the edge of the window. This can automatically compensate for the wear gaps caused by long-term use of the lifting door 102 or the window, avoid sealing gaps, further eliminate the risk of microwave leakage, and at the same time enhance the heat preservation effect to ensure the temperature stability inside the microwave heating cavity. On the other hand, the slight vibration generated by the working inner liner 200 during microwave heating will be transmitted through the frame 100. The spring 108 can play a buffering and vibration damping role, preventing the vibration from causing the connection between the guide rod 101 and the lifting door 102 to loosen, ensuring that the lifting door 102 always maintains a stable sealing state, and preventing microwave leakage or heat loss caused by vibration.

[0036] For further details, please refer to Figure 7 An upper limit photoelectric sensor 1091 and a lower limit photoelectric sensor 1092 are fixedly installed on the side frame 100 of the lifting gate 102. The upper limit photoelectric sensor 1091 is located above the lower limit photoelectric sensor 1092. The movement path of the lifting gate 102 passes through the detection window of the upper limit photoelectric sensor 1091 and the detection window of the lower limit photoelectric sensor 1092. Through the cooperation of the upper limit photoelectric sensor 1091 and the lower limit photoelectric sensor 1092, upper and lower limit protection is achieved during the movement of the lifting gate 102, preventing the lifting motor 103 from over-winding or releasing the rope 106, and ensuring the controllability of the movement of the lifting gate 102.

[0037] In some specific embodiments, the delivery window 201 is equipped with a cargo detection photoelectric eye to detect whether a boxed meal is pushed to the front of the delivery window 201, so as to control the opening and closing of the first lifting door assembly 110.

[0038] In some specific embodiments, please refer to Figure 6 The working inner liner 200 has mesh ventilation windows 220 on its sides and back, which connect to the working cavity 210. A blower 500 is installed on one side of the working inner liner 200, and the input end of the blower 500 connects to the working cavity 210. The blower 500 can actively draw air from the working cavity 210, and the mesh ventilation windows 220 can balance the negative pressure generated by the blower 500 when drawing air, allowing outside air to smoothly enter and form a stable airflow circulation. During this process, water vapor and oil in the cavity are quickly discharged to the outside with the airflow, effectively reducing humidity and oil residue in the cavity and quickly cleaning the working cavity 210.

[0039] The working process of the heating and shipping device of this utility model is as follows: Step 1: First, the lifting motor 103 of the second lifting door assembly 120 rotates forward, driving the winch 105 to rotate counterclockwise to wind up the rope 106, pulling the lifting door body 102 upward along the two guide rods 101, opening the loading window 202, and allowing the lunchboxes to enter the working cavity 210 through the loading window 202. Then, the lifting motor 103 of the second lifting door assembly 120 rotates in reverse, driving the winch 105 to rotate clockwise to release the rope 106, and the lifting door body 102 descends along the two guide rods 101 under its own gravity, closing the loading window 202. During the movement of the lifting door body 102 of the second lifting door assembly 120, when the lifting door body 102 rises to the detection window of the upper limit photoelectric sensor 1091, the lifting motor 103 stops rotating forward; when the lifting door body 102 descends to the detection window of the lower limit photoelectric sensor 1092, the lifting motor 103 stops rotating in reverse.

[0040] Step 2: The first microwave heating component 310 and the second microwave heating component 320 (and the third microwave heating component 330) work simultaneously to heat the boxed meal.

[0041] Step 3: After the boxed meal is heated, the first reduction motor 430 of the push plate drive mechanism 402 rotates forward, driving one transmission rack 422 to slide towards the delivery window 201. This moving transmission rack 422 drives another transmission rack 422 to slide synchronously towards the delivery window 201 through the transmission shaft 421, thereby driving the delivery push plate 401 to push the boxed meal towards the delivery window 201. After the boxed meal moves to the delivery window 201, the first reduction motor 430 of the push plate drive mechanism 402 reverses, driving one transmission rack 422 to slide away from the delivery window 201. This moving transmission rack 422 drives another transmission rack 422 to slide synchronously away from the delivery window 201 through the transmission shaft 421, thereby driving the delivery push plate 401 back to the initial position. During the movement of the transmission rack 422, when the light-shielding plate 423 moves to the detection window of the front limit photoelectric eye 413, the first reduction motor 430 stops rotating forward; when the light-shielding plate 423 moves to the detection window of the rear limit photoelectric eye 414, the first reduction motor 430 stops rotating in reverse.

[0042] Step 4: When the photoelectric sensor on the delivery window 201 detects the presence of the boxed meal, the lifting motor 103 of the first lifting door assembly 110 rotates clockwise, driving the winch 105 to rotate counterclockwise to wind up the rope 106, pulling the lifting door 102 up along the two guide rods 101, opening the delivery window 201, and allowing the consumer to take the boxed meal; when the photoelectric sensor on the delivery window 201 does not detect the presence of the boxed meal, the lifting motor 103 of the first lifting door assembly 110 rotates counterclockwise, driving the winch 105 to rotate clockwise to release the rope 106, and the lifting door 102 descends along the two guide rods 101 under its own gravity, closing the delivery window 201.

[0043] The heating and dispensing device of this utility model connects the output ends of the first microwave heating component 310 and the output ends of the second microwave heating component 320 to the top and bottom of the working inner liner 200 respectively, forming a bidirectional microwave heating structure. This allows microwaves to act synchronously on the boxed meal inside the working cavity 210 from both the top and bottom, greatly improving the uniformity of the microwave field distribution and ensuring that all parts of the boxed meal are heated evenly. This effectively solves the problems of uneven heating, local overheating, or underheating caused by the single microwave heating component set on one side in the existing system.

[0044] Furthermore, by connecting a third microwave heating component 330 to the top of the working inner liner 200, the microwave field distribution at the top can be further optimized. Through the synergistic effect of the first and third microwave heating components at the top, microwave coverage blind spots (such as the top edge and corner areas of the lunchbox) that exist with a single top component are eliminated, making the microwave energy distribution at the top of the working cavity 210 more balanced and avoiding insufficient heating in local areas of the lunchbox. In addition, this can also improve heating uniformity redundancy. Even for lunchboxes of different sizes (such as larger sizes and irregular shapes), the multi-directional microwave field formed by the top dual components and the bottom component can still ensure that the heating differences between the upper and lower, inner and outer parts of the lunchbox are controlled within a smaller range, adapting to more diverse lunchbox shapes. In addition, this can moderately improve heating efficiency. The synergistic work of multiple components can make microwave energy act on the lunchbox more densely and evenly, significantly shortening the overall heating time while ensuring heating uniformity.

[0045] The heating and dispensing device of this utility model provides stable guidance for the transmission rack 422 through two symmetrical support plates 411 and guide grooves 412, ensuring that the dispensing push plate 401 moves smoothly along a fixed trajectory, effectively preventing the boxed meals from tilting, tipping over, or getting stuck during the pushing process. This method has high transmission precision. The transmission shaft 421 is rotatably set through the bearing seat and symmetrically meshes with the two transmission racks 422, which can realize the balanced force on both sides of the dispensing push plate 401 and avoid the dispensing push plate 401 from deviating. At the same time, the first reduction motor 430 directly meshes with the transmission rack 422 to drive it. The transmission path is short and the transmission loss is small, which can accurately control the movement speed and stroke of the push plate and adapt to the pushing needs of boxed meals of different sizes.

[0046] The heating and dispensing device of this utility model guides and limits the lifting door 102 through two vertical guide rods 101, ensuring that the lifting door 102 always moves along a fixed trajectory during the lifting process, avoiding deviation, jamming, or tilting. This ensures that the lifting door 102 can accurately fit the edges of the dispensing window 201 and the receiving window 202, achieving a tight seal. This sealing effect effectively prevents heat loss from the working inner liner 200, ensuring the temperature stability of the working cavity 210 during microwave heating and reducing energy consumption. On the other hand, it eliminates microwave leakage, avoids microwave radiation safety risks, and prevents external dust, debris, or cold air from entering the working inner liner 200, avoiding contamination of the boxed meals or interference with the microwave field distribution, ensuring uniform microwave heating, and meeting the food processing and safety requirements of microwave heating in boxed meal vending machines.

[0047] Moreover, the drive combination of "lifting motor 103 + winch 105 + rope 106 + pulley 104" has a clear transmission path and low transmission loss. When the lifting motor 103 drives the winch 105 to wind up or release the rope 106, the pulley 104 can change the direction of the force to smoothly pull the lifting door 102 upward. When the rope 106 is released, the lifting door 102 descends by its own weight without the need for additional driving power, which greatly reduces energy consumption. In addition, this drive method is highly responsive and can quickly respond to switching commands, and can work efficiently with the microwave heating process, the delivery mechanism 400, and the receiving operation: After microwave heating is completed, the first lifting door assembly 110 can quickly rise to open the delivery window 201, avoiding a large amount of heat loss in the working inner pot 200 due to the opening and closing delay, and ensuring the temperature of the boxed meals when they are cooked; when receiving, the second lifting door assembly 120 opens quickly, reducing the time the working inner pot 200 is open, reducing the fluctuation of the environment inside the microwave heating cavity, not affecting the subsequent microwave heating effect, and not delaying the replenishment efficiency.

[0048] Furthermore, by using the short rod 107 and the spring 108 to restrict the end of the guide rod 101, on the one hand, the elastic force of the spring 108 can always push the guide rod 101 towards the working inner liner 200, thereby causing the lifting door 102 to fit tightly against the window edge. This can automatically compensate for the wear gaps caused by long-term use of the lifting door 102 or the window, avoid the formation of sealing gaps, further eliminate the risk of microwave leakage, and at the same time enhance the heat preservation effect, ensuring the temperature stability inside the microwave heating cavity. On the other hand, the slight vibration generated by the working inner liner 200 during microwave heating will be transmitted through the frame 100. The spring 108 can play a buffering and vibration damping role, preventing the vibration from causing the connection between the guide rod 101 and the lifting door 102 to loosen, ensuring that the lifting door 102 always maintains a stable sealing state, and preventing microwave leakage or heat loss caused by vibration.

[0049] The heating and unloading device of this utility model can quickly clean the working cavity 210 through the cooperation of the blower 500 and the mesh ventilation window 220. The blower 500 can actively draw air from the working cavity 210, and the mesh ventilation window 220 can balance the negative pressure generated when the blower 500 draws air, so that outside air can be smoothly replenished and a stable airflow circulation is formed. In this process, the water vapor and oil in the cavity are quickly discharged to the outside with the airflow, effectively reducing the humidity and oil residue in the cavity.

[0050] This utility model also provides a boxed meal vending machine. Figure 8 A three-dimensional structural diagram of a boxed meal vending machine according to an embodiment of the present invention is shown. The boxed meal vending machine includes a refrigerated cabinet 10 and a heating cabinet 20. The refrigerated cabinet 10 is equipped with a shelf 11 and a conveying mechanism 12. The heating cabinet 20 is equipped with at least one heating and dispensing device 30. The shelf 11 conveys boxed meals to the heating and dispensing device 30 via the conveying mechanism 12. The shelf 11 is existing and has multiple delivery lanes, each capable of actively dispensing boxed meals. The conveying mechanism 12 is also existing and can convey boxed meals from the shelf 11 to the heating and dispensing device 30.

[0051] The boxed meal vending machine of this utility model adopts a specially designed heating and dispensing device 30, which can not only automatically output heated boxed meals to consumers, but also has better reliability and higher stability, thus improving the availability of the equipment.

[0052] The above provides a detailed description of a heating and dispensing device and a boxed meal vending machine provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A heated shipping device, characterized in that, The device includes a frame, a working liner disposed within the frame, and a heating mechanism and a discharging mechanism disposed on the working liner. The working liner has a working cavity for containing items. The items in the working cavity are heated by the heating mechanism and discharged by the discharging mechanism. The heating mechanism includes at least a first microwave heating component and a second microwave heating component. The output end of the first microwave heating component is connected to the top of the working inner liner, and the output end of the second microwave heating component is connected to the bottom of the working inner liner.

2. The heating and unloading device as described in claim 1, characterized in that, Both the first microwave heating assembly and the second microwave heating assembly include a magnetron, a cooling fan, and a waveguide. The magnetron is fixedly mounted on the back of the working inner liner. The cooling fan is connected to the magnetron via an air duct. The output end of the magnetron is fixedly connected to the input end of the waveguide. The output end of the waveguide communicates with the working cavity.

3. The heating and unloading device as described in claim 2, characterized in that, A microwave stirring plate is rotatably installed at the output port of the waveguide, and a first drive motor is fixedly installed on the outside of the waveguide. The output shaft of the first drive motor passes through the output port of the waveguide and is fixedly connected to the microwave stirring plate.

4. The heating and unloading device as described in claim 1, characterized in that, The heating mechanism also includes a third microwave heating component, the output end of which is connected to the top of the working inner liner.

5. The heated shipping device as described in claim 1, characterized in that, The dispensing mechanism includes a dispensing push plate disposed in the working cavity and a push plate driving mechanism disposed on the back of the working inner liner. The dispensing push plate is driven to move by the push plate driving mechanism. The push plate driving mechanism includes a first guide assembly, a first transmission assembly and a first reduction motor. The first guide assembly includes two symmetrically arranged support plates. One end of each of the two support plates is fixedly mounted on the back of the working inner liner, and the other end of each of the two support plates is far away from the working inner liner and suspended in the air. A guide groove is fixedly provided on one side of each support plate along its own length direction. The first transmission assembly includes a transmission shaft and two transmission racks. The transmission shaft is rotatably mounted on the back of the working inner liner based on two bearing seats and is perpendicular to the two support plates. The two transmission racks are slidably mounted in corresponding guide grooves, and one end of each transmission rack extends into the working cavity and is fixedly connected to the delivery push plate. The two ends of the transmission shaft are respectively engaged with the two transmission racks. The first geared motor is fixedly mounted on one of the support plates, and the output end of the first geared motor meshes with the transmission rack on the support plate.

6. The heated shipping device as described in claim 5, characterized in that, One of the support plates is provided with a front limit photoelectric sensor at one end near the working inner liner, and another of the support plates is provided with a rear limit photoelectric sensor at one end away from the working inner liner. One of the transmission racks is provided with a light-shielding plate at one end away from the delivery push plate. The movement path of the light-shielding plate passes through the detection window of the corresponding front limit photoelectric sensor and the detection window of the corresponding rear limit photoelectric sensor.

7. The heating and unloading device as described in claim 1, characterized in that, The front of the working inner tank is provided with a delivery window, and the front of the frame is provided with a first lifting door assembly. The delivery window is opened or closed by the action of the first lifting door assembly. The side of the working inner tank is provided with a receiving window, and the side of the frame is provided with a second lifting door assembly. The receiving window is opened or closed by the action of the second lifting door assembly. Both the first and second lifting door assemblies include two guide rods vertically arranged in the frame, a lifting door body movably arranged on the two guide rods, a lifting motor fixedly arranged on the frame, and a pulley rotatably arranged on the frame. A winch is fixedly arranged on the output end of the lifting motor, and a rope is wound on the winch. One end of the rope passes through the pulley and is fixedly connected to the lifting door body. The winch is driven by the lifting motor to release or reel in the rope. The lifting door body rises along the two guide rods due to the pulling action of the reeled rope. When the rope is released, the lifting door body descends along the two guide rods due to its own weight.

8. The heated shipping device as described in claim 7, characterized in that, Both ends of any of the guide rods are movably disposed in the frame based on short rods, the short rods are fixedly disposed in the frame, the axis of the short rods is perpendicular to the front of the lifting door body, and the short rods are movably disposed on the ends of the guide rods; A spring is fitted onto the short rod. The spring is located on the side of the guide rod away from the working liner. One end of the spring abuts against the guide rod, and the other end of the spring abuts against the frame.

9. The heated shipping device as described in claim 7, characterized in that, An upper limit photoelectric sensor and a lower limit photoelectric sensor are fixedly installed on the side frame of the lifting door. The upper limit photoelectric sensor is located above the lower limit photoelectric sensor. The movement path of the lifting door passes through the detection window of the upper limit photoelectric sensor and the detection window of the lower limit photoelectric sensor.

10. A meal vending machine, characterized in that, The boxed meal vending machine includes a refrigerated cabinet and a heating cabinet. The refrigerated cabinet is equipped with shelves and a conveying mechanism. The heating cabinet is equipped with at least one heating and dispensing device as described in any one of claims 1 to 9. The shelves convey boxed meals to the heating and dispensing device based on the conveying mechanism.

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