Branched heating type box lunch vending machine

Abstract

The invention relates to a sub-bin heating type box lunch vending machine which comprises a heat preservation box, the interior of the heat preservation box is divided into a plurality of storage bin areas which are not communicated, storage and unloading mechanisms are installed in the storage bin areas in a one-to-one correspondence mode, and heat conduction pipes are installed on the rear sides of the storage bin areas in a communicating mode; the heat supply mechanism is installed on the rear side of the heat preservation box in a left-right and up-down driving moving mode through a driving assembly, and the heat supply mechanism moves left and right to the heated storage bin area and then moves downwards to be in butt joint communication with the heat conduction pipe for hot air conveying. When the temperature of the heated storage bin area is larger than a set value T and the number of the boxed meals in the storage bin area is smaller than a set value N, or when the heating duration of the boxed meals in the heated storage bin area reaches a set value D1, the heat circulation mechanism conducts hot air exhausted by the heated storage bin area into the storage bin area to be heated; and the material receiving mechanism receives the box lunch and conveys the box lunch to the meal taking opening. According to the invention, warehouse-divided batch heating and preheating material preparation are effectively realized, so that the quality of sold box lunch is ensured, the recovery amount is reduced, the consumption demand of passenger flow peak hours is met, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of boxed meal vending machines, and specifically refers to a boxed meal vending machine with a compartment heating type. Background Art

[0002] A boxed meal vending machine, commonly known as a boxed meal machine, is an automatic vending machine for selling ready-to-eat boxed meals, which allows general staff, especially white-collar workers, to complete their meals quickly during a short lunch break. The boxed meal vending machine mainly includes a machine shell, a cargo channel arranged inside the machine shell, and a heating mechanism. The boxed meals are stored and placed through the cargo channel, and the boxed meals are conveyed out one by one according to the requirements of customers. The heating mechanism is used to heat the sold boxed meals so that the boxed meals reach the best edible temperature.

[0003] Traditional boxed meal machines or rice vending machines generally include a refrigeration area and a heating area. The boxed meals in the refrigeration area are conveyed to the heating area through a corresponding conveying device for heating, and then the pre-heated boxed meals in the heating area are conveyed to the meal-taking opening. Among them, an electric heating device or a microwave device can be arranged in the heating area to heat the boxed meals.

[0004] Among them, microwave heating is fast, but it is prone to local overheating or uneven heating. It may damage some nutrients due to local overheating, and it is also easy to make the food soft and wet and sticky. Moreover, it has higher requirements for the packaging containers of food, resulting in an increase in product cost; while the electric heating device has a slow heating speed and cannot meet the needs of consumers during the peak passenger flow period. If the space of the electric heating area is increased to increase the number of pre-heated boxed meals to meet the demand during the peak passenger flow period for a certain period, but in this way, after the boxed meals in the waiting heating area are sold out, it is necessary to transfer the boxed meals from the refrigeration area to the heating area through the conveying device for heating again, and there will be a break period for waiting for heating. If the peak passenger flow period continues or there is a peak passenger flow period during the heating period, the same heating waiting problem will occur, and thus the passenger flow problem cannot be actually solved; if one box is replenished in time after one box is sold to ensure that there are continuously pre-heated boxed meals for sale, but in this way, it will also lead to the inability to control the heating duration of each sold boxed meal, resulting in the sale of boxed meals that have passed the best edible period, and thus the freshness of the boxed meals cannot be guaranteed, ultimately resulting in a bad purchase experience, causing a sales accident and losing customers; and the above-mentioned timely replenishment method can only adopt horizontal planar replenishment, and the heated boxed meals can only be heated in a row of planes that are attached to the conveying device, which results in the heating area being limited to only the row of planes closest to the conveying device. Otherwise, it will lead to the inability to meet the actual use requirements of heating and selling immediately, and this will result in a large occupied width space of the equipment.

[0005] Therefore, the research objective of the present invention is to design a compartment heating type lunch box vending machine which can effectively achieve heating in batches by compartments and preheating for material preparation on the basis of ensuring reasonable floor space and rational use of space for the equipment, thereby guaranteeing the quality of the sold lunch boxes, greatly reducing the number of recycled lunch boxes, effectively avoiding the out-of-stock period to meet the consumption demands during the peak passenger flow period, and achieving the effect of energy conservation. Summary of the Invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a compartment heating type lunch box vending machine, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is as follows: A compartment heating type lunch box vending machine, comprising: A machine shell, and a meal-taking opening connecting the inside and outside of the machine shell is arranged on the front side of the machine shell; A plurality of insulation boxes, which are fixedly installed in the machine shell in an up-and-down arrangement. The inside of the insulation box is separated into a plurality of non-connected storage areas by isolation plates evenly distributed at intervals in the horizontal direction. The front side of the insulation box is open and is provided with corresponding closing doors which can be opened and closed by driving mechanisms on both sides; A storage and unloading mechanism, and corresponding storage and unloading mechanisms are respectively installed in the storage areas one by one. It includes a load-carrying member which can be slidably installed in the storage area, and a spiral member which is rotatably arranged above the load-carrying member by driving of a corresponding motor. When the motor rotates to drive the spiral member to rotate, the lunch boxes placed in the corresponding spiral channels on the spiral member move forward one by one for discharging; A conduction mechanism, which includes a plurality of heat conduction tubes connected and installed at the rear side of the insulation box and corresponding to each storage area one by one. A limiting ring is fixedly connected to the inner wall of the air inlet end of the heat conduction tube, and a closing ball is supported and installed in the heat conduction tube by a corresponding elastic member. The closing ball abuts against the middle of the limiting ring to make the air inlet end of the heat conduction tube in a normally closed state; A heat supply mechanism, which is movably installed at the rear side of the insulation box by driving components in the left-right and up-down directions. After the heat supply mechanism moves left and right to the storage area to be heated and then moves down to be connected and communicated with the heat conduction tube; when the heat supply mechanism conveys hot air, the hot air blows down the closing ball to set the distance between the closing ball and the limiting ring, and the hot air enters the heated storage area through the gap; A heat circulation mechanism, which is used to guide and discharge the waste heat discharged from the heated storage area (201) to the storage area (201) to be heated for preheating; A material receiving mechanism, which is used to receive the lunch boxes in the storage area and convey them to the meal-taking opening.

[0008] The thermal cycling mechanism includes exhaust branch pipes for connecting each storage bin area in parallel and installed on the front side of the insulation box. Each exhaust branch pipe is connected to an exhaust main pipe provided with an exhaust main valve. Exhaust sub-valves and temperature sensors are installed on the exhaust branch pipes of each storage bin area. When the temperature of the heated storage bin area is greater than the set value T and the number of boxed lunches in the storage bin area is less than the set value N, or when the heating duration of the boxed lunches in the heated storage bin area reaches the set value D1, the exhaust main valve is closed, and the exhaust sub-valve of the storage bin area to be heated is opened to conduct the hot air discharged from the heated storage bin area into the storage bin area to be heated.

[0009] When the heating time of the boxed lunches in the heated storage bin area reaches the set value D2, the heating mechanism stops heating and moves and connects to the next storage bin area to be heated or the preheated storage bin area, continues to heat the storage bin area to be heated or the preheated storage bin area, and stops selling the boxed lunches in the storage bin area where the heating time reaches the set value D2, where D1 = D2 - D * n, D2 is the best eating period of the boxed lunches in the continuous heating state, D is the time used to heat the boxed lunches in the storage bin area to the limited temperature, and n is a non-zero natural number.

[0010] The driving assembly includes fixed guide rails horizontally arranged at the rear side of the insulation box and extending to its left and right sides. A moving seat driven by a corresponding stepping motor is movably installed on the fixed guide rails. The moving seat is fixedly connected upward with a corresponding column. An electromagnet and a limit seat are fixedly installed on the column at intervals up and down, and an iron mounting seat is movably installed between the electromagnet and the limit seat through a corresponding return spring. The heating mechanism is fixedly installed on the iron mounting seat through a corresponding cross beam.

[0011] The heating mechanism includes a cylinder fixed at the end of the cross beam. A ventilation fan and a heater are installed up and down in the cylinder. When the heating mechanism is connected to the conduction mechanism, the cylinder is inserted into the heat conduction tube and abuts against the limit ring.

[0012] A circular embedding groove is recessed inward at the abutting position of the closing ball and the limit ring. A corresponding flexible ring is fixedly installed in the embedding groove by bonding. The outer surface of the flexible ring is connected to the surface of the closing ball in a streamline shape. An exhaust passage for communicating the inside and outside of the storage bin area is arranged in the closing ball. The intake end of the exhaust passage is arranged at the bottom of the closing ball, and its outlet end penetrates through the flexible ring and is closed by the abutting limit ring. When the exhaust sub-valve is opened, the storage bin area to be preheated is pressurized for intake, and the closing ball is pushed upward under the pressure. The outlet end of the exhaust passage is placed above the limit ring to connect the storage bin area to be preheated with the outside.

[0013] The power mechanism includes a synchronous cylinder fixedly installed on the side wall of the heat preservation box. The end of the piston rod of the synchronous cylinder is hinged with a corresponding arc swing arm through a connecting plate. A corresponding L-shaped connecting piece is installed on the side of the closing door. The outer end of the arc swing arm is tightly connected with the L-shaped connecting piece through a corresponding bolt assembly. When the piston rod of the synchronous cylinder extends, it drives the closing door to turn upwards to open the heat preservation box.

[0014] The bottom of the object-carrying member is lifted by a corresponding height-lifting assembly so that there is a spacing from the bottom plate of the heat preservation box. When the object-carrying member is installed in place, it cooperates with the height-lifting assembly and the bottom plate of the heat preservation box to form a hot gas guiding channel extending along the front and rear sides of the bottom of the object-carrying member. And the air inlet end of the hot gas guiding channel is communicated with the air outlet end of the heat conducting pipe. A plurality of air permeable holes communicating the upper and lower parts of the hot gas guiding channel are evenly distributed on the object-carrying member. The height-lifting assembly includes height-lifting plates fixedly connected to the periphery of the bottom surface of the object-carrying member. The head and tail of the height-lifting plates are connected in sequence. The front side of the object-carrying member protrudes from the front height-lifting plate and extends outwards to form a corresponding hand-held part. A through hole adapted to the heat conducting pipe is arranged on the rear height-lifting plate. When the object-carrying member is installed in place, the air outlet end of the heat conducting pipe is inserted into the through hole.

[0015] An electrical connection component for electrically connecting the motor to an external power source is arranged between the object-carrying member and the corresponding storage area. The electrical connection component includes a plug installed at the end of the object-carrying member and a socket installed on the inner side wall of the storage area. When the object-carrying member is inserted and installed in place, it is electrically connected to the external power source through the plug and the socket, and the motor is electrically connected to the external power source. Conversely, the connection is disconnected.

[0016] On the front side of the machine shell and above the meal-taking opening, there is a touch screen electrically connected to the control system. On the front side of the machine shell and opposite to the heat preservation box, there is a corresponding glass closing door that can be opened and closed. The material receiving mechanism includes a receiving box that drives left and right movement by means of gear transmission and drives up and down movement by means of screw transmission. At the meal outlet of the receiving box, there is a corresponding opening and closing plate that can swing driven by a corresponding power motor. The power motor is fixedly installed on the receiving box. When the receiving box moves to the meal-taking opening, the power motor drives the opening and closing plate to rotate to form a clearance, and the meal outlet is communicated with the meal-taking opening.

[0017] Advantages of the present invention: 1) The present invention optimizes and improves the storage mechanism of boxed lunches into multiple independent heat preservation box structures. The inside of the heat preservation box is separated into non-connected storage areas by partition plates, and the boxed lunches in each storage area are heated separately and asynchronously. Thus, it can effectively achieve batch heating of the boxed lunches in the vending machine, control the number of boxed lunches heated at the same time, greatly reduce the recovery amount of boxed lunches heated beyond the best consumption period, and further improve economic benefits. Moreover, the present invention further adds corresponding storage and unloading mechanisms in the independently heated storage areas, which include a load-carrying member that can be slidably installed in the storage area and a spiral member that is rotatably arranged above the load-carrying member driven by a corresponding motor. This not only facilitates the extraction of the load-carrying member alone for replacing goods, improves the convenience of replacing goods and the practicality of the equipment, but also can store and heat the boxed lunches longitudinally along the depth of the vending machine, effectively solving the problem that the traditional heating area can only be set in a row of planes close to the conveying device, and further ensuring the realization of batch heating.

[0018] 2) The present invention sets corresponding conduction mechanisms at the rear sides of each storage area, which include heat conduction pipes connected and installed at the rear sides of the storage areas. And a closed mechanism in a normally closed state is formed in the heat conduction pipe by a limiting ring and a closing ball that can move up and down. A heating mechanism is arranged to move left and right and up and down at the rear side of the heat preservation box. Only by moving the heating mechanism to the storage area that needs to be heated and moving it downwards so that the barrel part of the heating mechanism is inserted and docked with the heat conduction pipe and abuts against the limiting ring, the heat generated by the heater is blown downward along with the gas generated by the ventilation fan. When the hot air is transmitted downward, the closing ball is blown downward, so that the distance between the closing ball and the limiting ring is set to open and connect the heat conduction pipe. Then, the hot air enters the storage area to heat the boxed lunches. Designing one heating mechanism can meet the different-time heating uses of multiple storage areas on one heat preservation box, reducing the input cost of heating equipment.

[0019] 3) The present invention adds a driving component to move the heating mechanism left and right and up and down, thus effectively solving the problem that each storage area requires a separate heating mechanism, and greatly saving the equipment cost. By means of fixed guide rails arranged at the rear side of the heat preservation box and extending to its left and right sides, a moving seat on the fixed guide rail is controlled by a stepping motor to move left and right, so that the heating mechanism can be accurately docked with each conduction mechanism. And an electromagnet is used to drive the heating mechanism installed on the iron mounting seat to move upward to form a clearance for left and right movement. After moving in place, the electromagnet is powered off, and the iron mounting seat drives the heating mechanism to move downward under the action of gravity to dock with the conduction mechanism for hot air transmission. A corresponding reset spring is arranged between the electromagnet and the iron mounting seat, which can play a good buffering and protective role in the up and down movement of the iron mounting seat to ensure the practical effect of the present invention.

[0020] 4) The hot air of the heating mechanism of the present invention is transmitted to the storage area through the conduction mechanism. In order to ensure the heat preservation of each storage area, a normally closed mechanism composed of a limit ring and a closing ball is arranged in the conduction mechanism. When the lunch box is heated, the hot air blows the closing ball downward to form a gap and open. Therefore, a corresponding exhaust duct is arranged on the front side of the storage area to ensure the normal pressure state of the storage area, and the additional heat circulation mechanism connects the exhaust restrictions of each storage area in parallel. According to the temperature in the heated storage area, the number of lunch boxes, and the duration of the lunch box heating, the heat discharged from the heated storage area is discharged to the storage area to be heated for preheating, so as to speed up the heating efficiency of the subsequent lunch boxes, shorten the heating time, and further save energy consumption; when the heated storage area When the temperature is lower than the set value T, the waste heat is directly discharged through the exhaust main pipe; when the temperature of the heated storage area is higher than the set value T and the number of lunch boxes in the storage area is lower than the set value N, or when the heating time of the lunch boxes in the heated storage area reaches the set value D1, the exhaust main valve is closed, and the exhaust sub-valve of the storage area to be heated is opened to conduct the hot air discharged from the heated storage area to the storage area to be heated, and preheat the lunch boxes in the storage area to be heated, which not only makes the energy fully recycled but also shortens the subsequent heating time of the lunch boxes; when the temperature of the heated storage area is higher than the set value T and the number of lunch boxes in the storage area is higher than the set value N, that is, there are sufficient heated lunch boxes to be sold, and the waste heat still needs to be discharged to avoid waste caused by too many lunch boxes in the heating state. When the heating time of the lunch boxes in the heated storage area reaches the set value D1, it means that the lunch boxes in the storage area are about to reach the best consumption period under continuous heating. When the best consumption period is reached, the sale of the lunch boxes in the storage area must be stopped and the lunch boxes in the next storage area must be heated. In order to ensure the continuity of supply, it is necessary to discharge the heat in this area to the storage area to be heated for heating before stopping the sale of the lunch boxes in the storage area, thereby shortening the heating time of subsequent lunch boxes and ensuring the continuity of supply.

[0021] 5) The heating time of traditional lunch boxes and the heating conditions of the lunch boxes for sale are not limited, and the quality of the lunch boxes for sale cannot be well ensured. Therefore, the present invention limits the operation of the heating mechanism to achieve that when the heating time of the lunch boxes in the heated storage area reaches the set value D2, the heating mechanism stops heating and moves to and connects to the next storage area to be heated or the preheated storage area, continues to heat the storage area to be heated or the preheated storage area, and stops selling the lunch boxes in the storage area whose heating time reaches the set value D2, wherein D1=D2-D*n, D2 is the best consumption period of the lunch boxes under continuous heating, and D is the time taken for the lunch boxes in the storage area to be heated to the specified temperature. The combination of compartment heating and time-limited sales can effectively ensure the quality of the lunch boxes sold.

[0022] 6) Recycling of waste heat reflux: The boxed lunches in the storage bin to be heated are preheated. The storage bin to be heated will inevitably cause pressure increase due to air intake. Therefore, the present invention further improves the closing ball used to keep the conduction mechanism normally closed. An exhaust channel communicating inside and outside the storage bin is arranged in the closing ball. A circular embedding groove is recessed inward at the contact position of the closing ball with the limiting ring, and a flexible ring part is fixedly installed by an adhesive method. The air outlet end of the exhaust channel penetrates through the flexible ring part. In the normally closed state, the air outlet end of the exhaust channel is blocked by the limiting ring. When preheating and air intake, the pressure increase in the storage bin will push the closing ball upward, so that the air outlet end of the exhaust channel is placed above the limiting ring, connecting the storage bin to be preheated with the outside world, further ensuring the practical effect of the present invention.

[0023] 7) The front end of the incubator of the present invention can be driven by a power mechanism to start and set a corresponding closing door. The closing door can ensure the heat preservation effect inside the incubator, and the synchronous cylinder drives the articulated arc-shaped swing arm to drive the closing door to open for easy unloading or feeding of boxed lunches.

[0024] 8) A corresponding loading plate is slidably arranged in the storage bin of the present invention. Pulling out the loading plate outward facilitates the staff to load boxed lunches. A corresponding heightening component is added to the loading plate. The heightening component is composed of heightening plates connected end to end and fixedly connected to the loading plate. The heightening component can reduce the contact area between the loading plate and the bottom surface of the incubator, thereby reducing the friction force of the loading plate during pulling. The heightening component and the bottom plate of the incubator cooperate to form a hot air guide channel extending along the front and rear sides of the bottom of the loading object. A plurality of air holes communicating up and down with the hot air guide channel are evenly distributed on the surface of the loading plate, which is conducive to the uniform dispersion of hot air to heat the boxed lunches, improving the uniformity and consistency of boxed lunch heating. And the front side of the loading object protrudes from the front heightening plate and extends outward to form a corresponding handle part, which is convenient for the staff to pull out the loading object.

[0025] 9) A corresponding electrical connection component is arranged at the rear side of the loading plate of the present invention, which includes a plug installed at the end of the loading object and a socket installed on the inner side wall of the storage bin. The plug is electrically connected to the electric controller of the motor and is fixedly installed at the end of the loading object through a corresponding wire. When the loading object is inserted and installed in place, the motor is electrically connected to the external power supply through the electrical connection between the plug and the socket, and vice versa. The motor and the external power supply can be adjustably connected through the intervention of the electrical connection component. When loading goods, the plug and socket of the detachable electrical connection are quickly separated to disconnect the motor from the external power supply, facilitating the light extraction of the loading object for material loading. After the loading is completed and the loading object is pushed into place, the plug and socket are inserted and connected to electrically connect the motor to the external power supply. On the basis of ensuring the lightness of loading, it effectively solves the problems of wire entanglement and installation of too long wires during loading, and can also cut off the power supply when the loading object is pulled out to ensure use safety, further ensuring the practical effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the present invention.

[0027] Figure 2 It is Figure 1 a schematic structural diagram of the structure with part of the outer shell removed.

[0028] Figure 3 One of the schematic structural diagrams of the incubator.

[0029] Figure 4 It is a schematic diagram of the state before the storage and unloading mechanism is installed.

[0030] Figure 5 Another schematic structural diagram of the incubator.

[0031] Figure 6 It is Figure 5 a schematic sectional view of...

[0032] Figure 7 It is Figure 6 an enlarged schematic view of part A in...

[0033] Figure 8 a schematic diagram of the state of the closing ball in the conduction structure during preheating.

[0034] In the drawings: the housing 1, the meal-taking opening 101, the incubator 2, the storage area 201, the partition board 202, the closing door 203, the storage and unloading mechanism 3, the carrying object 301, the motor 302, the spiral member 303, the lifting component 4, the hot air guiding channel 5, the conduction mechanism 6, the heat conduction pipe 601, the limiting ring 602, the elastic member 603, the closing ball 604, the heating mechanism 7, the cylinder member 701, the ventilation fan 702, the heater 703, the driving component 8, the fixed guide rail 801, the stepping motor 802, the moving seat 803, the column 804, the electromagnet 805, the limiting seat 806, the return spring 807, the iron mounting seat 808, the cross beam 809, the heat circulation mechanism 9, the exhaust branch pipe 901, the exhaust main pipe 902, the exhaust main valve 903, the exhaust branch valve 904, the temperature sensor 905, the feeding mechanism 10, the flexible ring member 11, the exhaust channel 12, the power mechanism 13, the synchronous cylinder 1301, the connecting plate 1302, the arc swing arm 1303, the electrical connection component 14, the plug 1401, the socket 1402, the touch screen 15, the glass closing door 16. DETAILED DESCRIPTION OF THE INVENTION

[0035] For the convenience of those skilled in the art to understand, the structure of the present invention will be further described in detail below in conjunction with the accompanying drawings:[[]]END]] Referring to Figure 1-8 , a compartment heating type lunch box vending machine includes: A casing 1, with a meal-taking opening 101 for connecting the inside and outside of the casing 1 provided on the front side of the casing 1; A plurality of insulation boxes 2, fixedly installed in the casing 1 in an up-and-down arrangement. The inside of the insulation box 2 is divided into a plurality of non-connected storage areas 201 by transverse partition plates 202 evenly distributed at intervals. The front side of the insulation box 2 is open and is provided with corresponding closing doors 203 that can be opened and closed by driving mechanisms 13 on both sides; A storage and unloading mechanism 3, with corresponding storage and unloading mechanisms 3 installed in each of the storage areas 201 in a one-to-one correspondence. It includes a carrier 301 that can be slidably installed in the storage area 201, and a screw member 303 rotatably arranged above the carrier 301 driven by a corresponding motor 302. When the motor 302 rotates to drive the screw member 303 to rotate, the boxed lunches placed in the corresponding screw channels on the screw member 303 move forward one by one for discharging. Among them, the cargo channel formed by the screw member 303 can be replaced with other cargo channels that can store and push the boxed lunches outwards one by one; A conduction mechanism 6, including a plurality of heat conduction pipes 601 connected and installed on the rear side of the insulation box 2 and arranged in a one-to-one correspondence with each storage area 201. A limiting ring 602 is fixedly connected to the inner wall of the air inlet end of the heat conduction pipe 601, and a closing ball 604 is supported and installed in the heat conduction pipe 601 by a corresponding elastic member 603. The closing ball 604 abuts against the middle of the limiting ring 602 to make the air inlet end of the heat conduction pipe 601 in a normally closed state; A heating mechanism 7, which is movably installed on the rear side of the insulation box 2 by corresponding driving components 8 for left-right and up-down driving. After the heating mechanism 7 moves left and right to the heated storage area 201, it moves downwards to be connected and communicated with the heat conduction pipe 601; when the heating mechanism 7 conveys hot air, the hot air blows down the closing ball 604 to set the distance between the closing ball 604 and the limiting ring 602, and the hot air enters the heated storage area 201 through the gap; A heat circulation mechanism 9, used to guide the waste heat discharged from the heated storage area 201 to the storage area 201 to be heated for preheating; A material receiving mechanism 10, used to receive the boxed lunches in the storage area 201 and convey them to the meal-taking opening 101.

[0036] The storage mechanism of the boxed meal of the present invention is optimized and improved into a structure of multiple independent heat preservation boxes 2. The inside of the heat preservation box 2 is separated into non-connected storage areas by a partition board 202. And the boxed meals in each storage area are heated separately and asynchronously, so as to effectively realize the batch heating of the boxed meals in the vending machine, control the number of boxed meals heated at the same time, greatly reduce the recovery amount of the boxed meals that exceed the best eating period after heating, and further improve the economic benefits. Moreover, the present invention further adds a corresponding storage and unloading mechanism 3 in the independently heated storage area, which includes a carrier 301 that can be slidably installed in the storage area 201 and a spiral member 303 that is driven to rotate above the carrier 301 by a corresponding motor 302. This not only facilitates the separate extraction of the carrier 301 for replacing goods, improves the convenience of replacing goods and the practicality of the equipment, but also can longitudinally store and heat the boxed meals along the depth of the vending machine, effectively solving the problem that the traditional heating area can only be set in a row of planes close to the conveying device, and further ensuring the realization of batch heating.

[0037] The present invention is provided with a corresponding conduction mechanism 6 at the rear side of each storage area 201, which includes a heat conduction pipe 601 connected and installed at the rear side of the storage area 201. And a closing mechanism in a normally closed state is formed in the heat conduction pipe 601 by a limiting ring 602 and a closing ball 604 that can move up and down. And a heating mechanism 7 is arranged to move left and right and up and down at the rear side of the heat preservation box 2. Just move the heating mechanism 7 to the storage area 201 that needs to be heated, and move it down so that the barrel 701 of the heating mechanism 7 is inserted and docked into the heat conduction pipe 601 and abuts against the limiting ring 602. The heat generated by the heater 703 is blown downward along with the gas generated by the ventilation fan 702. When the hot gas is transmitted downward, the closing ball 604 is blown downward, so that the distance between the closing ball 604 and the limiting ring 602 is set to open and connect the heat conduction pipe 601. Then, the hot gas enters the storage area to heat the boxed meals. Designing one heating mechanism 7 can meet the different heating uses of multiple storage areas 201 on one heat preservation box 2, reducing the input cost of the heating equipment.

[0038] The heat circulation mechanism 9 includes exhaust branch pipes 901 used for connecting each storage area 201 in parallel and installed on the front side of the heat preservation box 2. Each exhaust branch pipe 901 is connected to an exhaust main pipe 902 provided with an exhaust main valve 903. Exhaust sub-valves 904 and temperature sensors 905 are installed on the exhaust branch pipes 901 of each storage area 201. When the temperature of the heated storage area 201 is greater than the set value T and the number of boxed meals in this storage area 201 is less than the set value N, or when the heating duration of the boxed meals in the heated storage area 201 reaches the set value D1, the exhaust main valve 903 is closed, and the exhaust sub-valve 904 of the storage area 201 to be heated is opened, and the hot gas discharged from the heated storage area 201 is conducted into the storage area 201 to be heated.

[0039] The hot air of the heating mechanism 7 of the present invention is transmitted into the storage bin area 201 through the conduction mechanism 6. To ensure the heat preservation of each storage bin area 201, a normally closed closing mechanism composed of a limit ring 602 and a closing ball 604 is arranged in the conduction mechanism 6. When heating the lunch box, the hot air blows the closing ball 604 to move downward to form a yielding opening. Therefore, a corresponding exhaust pipe is arranged on the front side of the storage bin area 201 to ensure the normal pressure state of the storage bin area 201. And the added heat circulation mechanism 9 connects the exhaust restrictions of each storage bin area 201 in parallel. According to the temperature situation, the number of lunch boxes, and the continuous heating duration of the heated storage bin area 201, the heat discharged from the heated storage bin area 201 is guided into the storage bin area 201 to be heated for preheating, so as to accelerate the heating efficiency of the subsequent lunch boxes, shorten the heating duration, and further save energy consumption; when the temperature of the heated storage bin area 201 is less than the set value T, the waste heat is directly discharged through the exhaust main pipe 902; when the temperature of the heated storage bin area 201 is greater than the set value T and the number of lunch boxes in this storage bin area 201 is less than the set value N, or when the heating duration of the lunch boxes in the heated storage bin area 201 reaches the set value D1, the exhaust main valve 903 is closed, and the exhaust sub-valve 904 of the storage bin area 201 to be heated is opened, and the hot air discharged from the heated storage bin area 201 is conducted into the storage bin area 201 to be heated, and the lunch boxes in the storage bin area 201 to be heated are preheated, which not only enables the energy to be fully recycled but also shortens the subsequent heating duration of the lunch boxes; when the temperature of the heated storage bin area 201 is greater than the set value T and the number of lunch boxes in this storage bin area 201 is greater than the set value N, that is, there are sufficient heated lunch boxes for sale, the waste heat still needs to be discharged, so as to avoid waste caused by too many lunch boxes being in the heating state. The set value T and the set value N are set according to the site and sales situation. When the heating duration of the lunch boxes in the heated storage bin area 201 reaches the set value D1, that is, the lunch boxes in this storage bin area 201 are about to reach the best edible period under the continuous heating state. When reaching the best edible period, the sale of the lunch boxes in this storage bin area 201 must be stopped and the lunch boxes in the next storage bin area 201 are heated. To ensure the continuity of the supply, it is necessary to guide the heat in this storage bin area 201 into the storage bin area 201 to be heated for heating before stopping the sale of the lunch boxes in this storage bin area 201, thereby shortening the subsequent heating duration of the lunch boxes and ensuring the continuity of the supply.

[0040] There is no limit on the heating duration of traditional boxed lunches and the heating situation of sold boxed lunches, so it is impossible to ensure the quality of sold boxed lunches well. Therefore, the present invention realizes by limiting the operation of the heating mechanism 7 that when the heating time of the boxed lunches in the heated storage area 201 reaches the set value D2, the heating mechanism 7 stops heating and moves and connects to the next storage area 201 to be heated or the preheated storage area 201, and continues to heat the storage area 201 to be heated or the preheated storage area 201, and stops selling the boxed lunches in the storage area 201 whose heating time reaches the set value D2, where D1 = D2 - D * n, D2 is the best eating period of the boxed lunches in the continuous heating state, D is the duration used for heating the boxed lunches in the storage area 201 to the limited temperature, n is a non-zero natural number, and is set according to the site and selling situation.

[0041] When the heating time of the boxed lunches in the heated storage area 201 reaches the set value D2, the heating mechanism 7 stops heating and moves and connects to the next storage area 201 to be heated or the preheated storage area 201, and continues to heat the storage area 201 to be heated or the preheated storage area 201, and stops selling the boxed lunches in the storage area 201 whose heating time reaches the set value D2, where D1 = D2 - D, D2 is the best eating period of the boxed lunches in the continuous heating state, D is the duration used for heating the boxed lunches in the storage area 201 to the limited temperature. By combining compartment heating and time-limited selling, the quality of sold boxed lunches can be effectively ensured.

[0042] The driving component 8 includes fixed guide rails 801 horizontally arranged at the rear side of the heat preservation box 2 and extending to its left and right sides. A moving seat 803 driven by a corresponding stepping motor 802 is movably installed on the fixed guide rails 801; a corresponding column 804 is fixedly connected upward to the moving seat 803. Electromagnets 805 and limit seats 806 are fixedly installed on the column 804 at intervals up and down, and an iron mounting seat 808 is movably installed between the electromagnet 805 and the limit seat 806 through a corresponding return spring 807. The two end parts of the return spring 807 are respectively fixedly connected to the electromagnet 805 and the iron mounting seat 808. The heating mechanism 7 is fixedly installed on the iron mounting seat 808 through a corresponding cross beam 809.

[0043] The present invention effectively solves the problem that each storage bin area 201 requires a separate heating mechanism 7 by adding a driving component 8 to move the heating mechanism 7 left and right and up and down, and greatly saves the equipment cost. By means of fixed guide rails 801 at the rear of the heat preservation box 2 and extending to its left and right sides, a stepping motor 802 is used to control the left and right movement of a moving seat 803 on the fixed guide rails 801, so that the heating mechanism 7 can be accurately docked with each conduction mechanism 6. And an electromagnet 805 is energized to drive the heating mechanism 7 installed on an iron mounting seat 808 to move upward to form a clearance for left and right movement; after moving in place, the electromagnet 805 is powered off, and the iron mounting seat 808 drives the heating mechanism 7 to move downward under the action of gravity to be docked with the conduction mechanism 6 for hot air transmission. A corresponding return spring 807 is arranged between the electromagnet 805 and the iron mounting seat 808, which can play a good buffering and protection role in the up and down movement of the iron mounting seat 808 to ensure the practical effect of the present invention.

[0044] The heating mechanism 7 includes a cylinder 701 fixedly connected to the end of the cross beam 809. A corresponding ventilation fan 702 and a heater 703 are installed up and down in the cylinder 701. When the heating mechanism 7 is connected to the conduction mechanism 6, the cylinder 701 is inserted into the heat conduction tube 601 and abuts against the limit ring 602.

[0045] A circular embedding groove is recessed inward at the abutting position of the closing ball 604 and the limit ring 602. A corresponding flexible ring member 11 is fixedly installed in the embedding groove by bonding. The outer surface of the flexible ring member 11 is connected to the surface of the closing ball 604 in a streamline shape. An exhaust passage 12 for communicating the inside and outside of the storage bin area 201 is arranged in the closing ball 604. The air inlet end of the exhaust passage 12 is arranged at the bottom of the closing ball 604, and its air outlet end penetrates through the flexible ring member 11 and is closed by the abutting limit ring 602. When the exhaust sub-valve 904 is opened, the storage bin area 201 to be preheated is pressurized with air intake, and the closing ball 604 is pushed upward under the action of pressure. The air outlet end of the exhaust passage 12 is placed above the limit ring 602 to communicate the storage bin area 201 to be preheated with the outside.

[0046] The heat recovery reflux cycle is used to preheat the boxed lunches in the storage area 201 to be heated. The storage area 201 to be heated will inevitably cause pressure increase due to air intake. Therefore, the present invention further improves the closing ball 604 used to keep the conduction mechanism 6 normally closed. By arranging an exhaust passage 12 communicating inside and outside the storage area 201 in the closing ball 604, and arranging a circular embedding groove inwards at the contact position of the closing ball 604 with the limiting ring 602, and fixedly installing a flexible ring member 11 by an adhesive method, and the air outlet end of the exhaust passage 12 penetrates through the flexible ring member 11. In the normally closed state, the air outlet end of the exhaust passage 12 is closed by the abutment of the limiting ring 602; when preheating and air intake, the pressure increase in the storage area 201 will push the closing ball 604 to move upwards, so that the air outlet end of the exhaust passage 12 is placed on the upper side of the limiting ring 602, connecting the storage area 201 to be preheated with the outside world, and further ensuring the practical effect of the present invention.

[0047] The power mechanism 13 includes a synchronous cylinder 1301 fixedly installed on the side wall of the heat preservation box 2. The end of the piston rod of the synchronous cylinder 1301 is hingedly installed with a corresponding arc swing arm 1303 through a connecting plate 1302. A corresponding L-shaped connecting member is installed on the side of the closing door 203. The outer end of the arc swing arm 1303 is locked and connected with the L-shaped connecting member through a corresponding bolt assembly; when the piston rod of the synchronous cylinder 1301 extends, it drives the closing door 203 to flip upwards to open the heat preservation box 2.

[0048] The front end of the heat preservation box 2 of the present invention can be driven by the power mechanism 13 to start and set a corresponding closing door 203. The heat preservation effect inside the heat preservation box 2 can be ensured through the closing door 203, and the arc swing arm 1303 hinged by the synchronous cylinder 1301 is driven to drive the closing door 203 to open for unloading or feeding of boxed lunches.

[0049] The bottom of the load-carrying member 301 is lifted by a corresponding heightening component 4 so that the distance from the bottom plate of the heat preservation box 2 is set. When the load-carrying member 301 is installed in place, it cooperates with the heightening component 4 and the bottom plate of the heat preservation box 2 to form a hot air guiding channel 5 extending along the front and rear sides of the bottom of the load-carrying member 301, and the air inlet end of the hot air guiding channel 5 is communicated with the air outlet end of the heat conducting pipe 601. A plurality of air permeable holes communicating the upper and lower parts of the hot air guiding channel 5 are evenly distributed on the load-carrying member 301; the heightening component 4 includes heightening plates fixedly connected to the four-week bottom surface of the load-carrying member 301. The heightening plates are connected end to end in sequence, and the front side of the load-carrying member 301 protrudes from the front heightening plate and extends outwards to form a corresponding hand-held part. A through hole adapted to the heat conducting pipe 601 is arranged on the rear heightening plate. When the load-carrying member 301 is installed in place, the air outlet end of the heat conducting pipe 601 is inserted into the through hole.

[0050] A corresponding loading plate is provided in the storage bin area 201 of the present invention, and the loading plate can be pulled out to facilitate the staff to load the lunch boxes, and a corresponding supporting assembly 4 is added to the loading plate. The supporting assembly 4 is composed of supporting plates connected end to end in sequence and fixed to the loading plate. The supporting assembly 4 can reduce the contact area between the loading plate and the bottom surface of the insulation box 2, thereby reducing the friction force of the loading plate being pulled out, and the supporting assembly 4 cooperates with the bottom plate of the insulation box 2 to form a hot air guide channel 5 extending to the front and rear sides of the bottom of the extending loading member 301. The surface of the loading plate is evenly distributed with many air holes connected to the upper and lower parts of the hot air guide channel 5, which is beneficial to the uniform dispersion of hot air to heat the lunch boxes, thereby improving the uniformity and consistency of the heating of the lunch boxes; and the front side of the loading member 301 protrudes from the front supporting plate and extends outward to form a corresponding hand-held portion, which is convenient for the staff to pull the loading member 301 out.

[0051] An electrical connection component 14 for electrically connecting the motor 302 to an external power source is provided between the carrier 301 and the corresponding storage area 201. The electrical connection component 14 includes a plug 1401 installed at the end of the carrier 301 and a socket 1402 installed on the inner wall of the storage area 201. When the carrier 301 is plugged in and installed in place, the plug 1401 is electrically connected to the socket 1402 to electrically connect the motor 302 to the external power source, and vice versa.

[0052] The rear side of the carrier of the present invention is provided with a corresponding electrical connection assembly 14, which includes a plug 1401 installed at the end of the carrier 301 and a socket 1402 installed on the inner wall of the storage area 201. The plug 1401 is electrically connected to the electric controller of the motor 302 and is fixedly installed outwardly at the end of the carrier 301 through corresponding wires. When the carrier 301 is plugged in and installed in place, the plug 1401 is electrically connected to the socket 1402 to electrically connect the motor 302 to the external power supply, and vice versa. The setting of the electrical connection assembly 14 not only facilitates the pulling and pulling installation of the carrier 301, but also can cut off the power supply when the carrier 301 is pulled out to ensure safe use.

[0053] A touch screen 15 electrically connected to the control system is arranged on the front side of the casing 1 and above the meal taking port 101, and a corresponding glass closing door 16 that can be opened and closed is arranged on the front side of the casing 1 and directly opposite the thermal insulation box 2; the material receiving mechanism 10 includes a receiving box that is driven to move left and right by a gear transmission and to move up and down by a screw transmission, and a corresponding opening and closing plate is swingably arranged at the meal outlet of the receiving box by a corresponding power motor, and the power motor is fixedly mounted on the receiving box; when the receiving box moves to the meal taking port 101, the power motor drives the opening and closing plate to rotate to make way, and the meal outlet is connected to the meal taking port 101, wherein the receiving box can be driven to move left and right and up and down by other driving methods.

[0054] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A compartment heating type lunch box vending machine, characterized in that, Including: A housing (1), a meal-taking opening (101) that connects the inside and outside of the housing (1) is provided on the front side of the housing (1); A plurality of insulation boxes (2), which are fixedly installed in the housing (1) in an up-and-down arrangement. The inside of the insulation box (2) is divided into a plurality of non-connected storage areas (201) by laterally spaced isolation plates (202). The front side of the insulation box (2) is open and is provided with a corresponding closing door (203) that can be opened and closed by driving mechanisms (13) on both sides; A storage and unloading mechanism (3), corresponding storage and unloading mechanisms (3) are respectively installed in the storage areas (201). It includes a load-carrying member (301) that can be slidably installed in the storage area (201), and a screw member (303) that is rotatably arranged above the load-carrying member (301) by driving of a corresponding motor (302). When the motor (302) rotates to drive the screw member (303) to rotate, the boxed lunches placed in the corresponding spiral channels on the screw member (303) move forward one by one for discharging; A conduction mechanism (6), including a plurality of heat-conducting pipes (601) that are connected and installed on the rear side of the insulation box (2) and are correspondingly arranged with each storage area (201). A limiting ring (602) is fixedly connected to the inner wall of the air inlet end of the heat-conducting pipe (601), and a closing ball (604) is supported and installed in the heat-conducting pipe (601) by a corresponding elastic member (603). The closing ball (604) abuts against the middle of the limiting ring (602) to make the air inlet end of the heat-conducting pipe (601) in a normally closed state; A heat supply mechanism (7), the heat supply mechanism (7) is movably installed on the rear side of the insulation box (2) by driving components (8) left and right and up and down. After the heat supply mechanism (7) moves left and right to the heated storage area (201) and then moves down to be connected and communicated with the heat-conducting pipe (601); when the heat supply mechanism (7) conveys hot air, the hot air blows the closing ball (604) downward to set the distance between the closing ball (604) and the limiting ring (602), and the hot air enters the heated storage area (201) through the gap; A heat circulation mechanism (9), which is used to guide the waste heat discharged from the heated storage area (201) to the storage area (201) to be heated for preheating; A material receiving mechanism (10), which is used to receive the boxed lunches in the storage area (201) and convey them to the meal-taking opening (101).

2. The bulkhead heating type lunch box vending machine according to claim 1, characterized in that, The thermal cycling mechanism (9) includes an exhaust branch pipe (901) for connecting each storage bin area (201) in parallel and installed on the front side of the heat preservation box (2). Each exhaust branch pipe (901) is connected to an exhaust main pipe (902) provided with an exhaust main valve (903). An appropriate exhaust sub-valve (904) and a temperature sensor (905) are installed on the exhaust branch pipe (901) of each storage bin area (201). When the temperature of the heated storage bin area (201) is greater than the set value T and the number of boxed lunches in this storage bin area (201) is less than the set value N, or when the heating duration of the boxed lunches in the heated storage bin area (201) reaches the set value D1, the exhaust main valve (903) is closed, and the exhaust sub-valve (904) of the storage bin area (201) to be heated is opened, and the hot air discharged from the heated storage bin area (201) is conducted into the storage bin area (201) to be heated.

3. The compartment heating type lunch box vending machine according to claim 2, characterized in that, When the heating time of the boxed lunches in the heated storage bin area (201) reaches the set value D2, the heat supply mechanism (7) stops heating and moves to and connects with the next storage bin area (201) to be heated or the preheated storage bin area (201), continues to heat the storage bin area (201) to be heated or the preheated storage bin area (201), and stops selling the boxed lunches in the storage bin area (201) whose heating time reaches the set value D2, where D1 = D2 - D * n, D2 is the best eating period of the boxed lunches in the continuous heating state, D is the time taken for the boxed lunches in the storage bin area (201) to be heated to the limited temperature, and n is a non-zero natural number.

4. A bin heating type lunch box vending machine according to claim 1, characterized in that, The drive assembly (8) includes fixed guide rails (801) horizontally arranged at the rear side of the heat preservation box (2) and extending to its left and right sides. A moving seat (803) driven by a corresponding stepping motor (802) is movably installed on the fixed guide rails (801). A corresponding column (804) is fixedly connected upward to the moving seat (803). An electromagnet (805) and a limit seat (806) are fixedly installed on the column (804) at intervals up and down. An iron mounting seat (808) is movably installed between the electromagnet (805) and the limit seat (806) through a corresponding return spring (807). The heat supply mechanism (7) is fixedly installed on the iron mounting seat (808) through a corresponding cross beam (809).

5. The compartment heating type lunch box vending machine according to claim 4, wherein, The heat supply mechanism (7) includes a cylinder part (701) fixedly connected to the end of the cross beam (809). A ventilation fan (702) and a heater (703) are installed up and down in the cylinder part (701). When the heat supply mechanism (7) is connected to the conduction mechanism (6), the cylinder part (701) is inserted into the heat conduction pipe (601) and abuts against the limit ring (602).

6. The compartment heating type lunch box vending machine according to claim 2, characterized in that, A circle of embedding grooves are recessed inwardly on the closed ball (604) at the contact position with the limit ring (602). A corresponding flexible ring (11) is fixedly installed in the embedding grooves by bonding. The outer surface of the flexible ring (11) is in a streamline connection with the surface of the closed ball (604). An exhaust passage (12) for communicating the inside and outside of the storage area (201) is provided in the closed ball (604). The intake end of the exhaust passage (12) is arranged at the bottom of the closed ball (604), and its outlet end penetrates through the flexible ring (11) and is closed by the contacting limit ring (602). When the exhaust sub-valve (904) is opened, the storage area (201) to be preheated intakes air and is pressurized. The closed ball (604) is pushed upward under the action of pressure, and the outlet end of the exhaust passage (12) is placed above the limit ring (602), connecting the storage area (201) to be preheated with the outside.

7. The compartment heating type lunch box vending machine according to claim 1, characterized in that, The power mechanism (13) includes a synchronous cylinder (1301) fixedly installed on the side wall of the heat preservation box (2). The end of the piston rod of the synchronous cylinder (1301) is hingedly installed with a corresponding arc swing arm (1303) through a connecting plate (1302). A corresponding L-shaped connecting piece is installed on the side of the closing door (203). The outer end of the arc swing arm (1303) is locked and connected with the L-shaped connecting piece through a corresponding bolt assembly. When the piston rod of the synchronous cylinder (1301) extends, it drives the closing door (203) to turn upward to open the heat preservation box (2).

8. A compartment heating type lunch box vending machine according to claim 1, characterized in that, The bottom of the load carrier (301) is lifted by a corresponding heightening assembly (4) so that there is a distance from the bottom plate of the heat preservation box (2). When the load carrier (301) is installed in place, it cooperates with the heightening assembly (4) and the bottom plate of the heat preservation box (2) to form a hot air guiding channel (5) extending along the front and rear sides of the bottom of the load carrier (301). The intake end of the hot air guiding channel (5) is communicated with the outlet end of the heat conduction pipe (601). A plurality of air permeable holes communicating the upper and lower parts of the hot air guiding channel (5) are evenly distributed on the load carrier (301). The heightening assembly (4) includes heightening plates fixedly connected to the periphery of the bottom surface of the load carrier (301). The heightening plates are connected in sequence at the head and tail. The front side of the load carrier (301) protrudes from the front heightening plate and extends outward to form a corresponding hand-held part. A through hole adapted to the heat conduction pipe (601) is provided on the rear heightening plate. When the load carrier (301) is installed in place, the outlet end of the heat conduction pipe (601) is inserted into the through hole.

9. The sectional heating type box lunch vending machine according to claim 1, characterized in that An electrical connection component (14) for electrically connecting the motor (302) to an external power supply is provided between the load-carrying object (301) and the corresponding storage bin area (201). The electrical connection component (14) includes a plug (1401) installed at the end of the load-carrying object (301) and a socket (1402) installed on the inner side wall of the storage bin area (201). When the load-carrying object (301) is inserted and installed in place, the motor (302) is electrically connected to the external power supply through electrical connection between the plug (1401) and the socket (1402), and vice versa for disconnection.

10. A bin heating type lunch box vending machine according to claim 1, characterized in that, A touch screen (15) electrically connected to a control system is provided on the front side of the machine shell (1) and above the meal pickup opening (101). A corresponding glass closing door (16) is provided on the front side of the machine shell (1) opposite to the heat preservation box (2) in an openable and closable manner; the material receiving mechanism (10) includes a receiving box that is driven to move left and right by a gear drive and driven to move up and down by a lead screw drive. A corresponding opening and closing plate is swingably provided at the meal outlet of the receiving box and is driven by a corresponding power motor. The power motor is fixedly installed on the receiving box; when the receiving box moves to the meal pickup opening (101), the power motor drives the opening and closing plate to rotate to form a clearance, and the meal outlet communicates with the meal pickup opening (101).

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