Storage refrigerator with medical vaccine quality guarantee reminding function

Abstract

The utility model provides a storage refrigerator with a medical vaccine quality guarantee reminding function, which belongs to the technical field of vaccine storage and comprises a medical refrigerator, a reminding component and a balancing component, the balancing component comprises a plurality of temperature sensors arranged at the top of the inner wall of the medical refrigerator, and two sides of a storage rack are fixedly connected with two sides of the inner wall of the medical refrigerator. A plurality of air vents are arranged in the storage rack and the storage device, a second refrigerator is arranged on the top of the first refrigerator, the top of the second refrigerator is fixedly connected with the storage rack, and a plurality of identification tables are arranged at one end of the storage rack. According to the medical refrigerator, the situation that the temperature is not uniform due to the fact that the protective door is opened back and forth to take and place vaccines can be effectively avoided, the purpose that the temperature in the medical refrigerator is more balanced is achieved, and through the arranged identification table, a user can take and place the vaccines rapidly and conveniently through marks on the identification table.

Description

Technical Field

[0001] The utility model belongs to the technical field of vaccine storage, and in particular relates to a storage refrigerator with a medical vaccine quality assurance reminder function. Background Art

[0002] The management of medical refrigerators in various clinical departments of the hospital is strictly regulated. After searching, the application number "CN202120423774.0" discloses "a departmental medical refrigerator with automatic reminder function", which records "when the medicine needs to be stored, the corresponding medicine name can be input by voice, and the voice data can be input through the microphone. Finally, the location of the medicine placement area of ​​the corresponding medicine is broadcast by voice through the matching recognition module, the voice synthesis module and the power amplifier. At the same time, when the refrigerator is opened, the indicator light on the corresponding medicine placement area lights up, which is convenient for the staff to place it in the designated location, avoiding the safety caused by the mixing of medicine bottles". When the medicine needs to be stored, the corresponding medicine name can be input by voice, and the voice data can be input through the microphone. Finally, the location of the medicine placement area of ​​the corresponding medicine is broadcast by voice through the matching recognition module, the voice synthesis module and the power amplifier. However, the above comparative documents still have the following problems in actual use:

[0003] In actual use, some vaccines can provide five or six effective injections. After a single use, the remaining vaccines can be effectively stored for one hour. When the user uses the remaining vaccines again, the storage time of the vaccines after use is out of control. This refrigerator fails to remind users of the remaining storage time of the vaccines or the expiration date, and fails to solve the problem of uneven freezing temperature of the vaccines.

[0004] Based on this, it is of practical significance to provide a medical refrigerator that can remind users of the remaining storage time of vaccines and ensure a balanced freezing temperature. Utility Model Content

[0005] The utility model aims to provide a storage refrigerator with a medical vaccine quality reminder function, aiming to solve the above technical problems.

[0006] The embodiment of the utility model provides a storage refrigerator with a medical vaccine quality reminder function, comprising a medical refrigerator, a reminder component and a balance component.

[0007] Wherein, a first refrigerator is provided at the bottom of the inner wall of the medical refrigerator;

[0008] The reminder component includes a storage device arranged on the top of the first refrigerator, a plurality of storage slots are provided inside the storage device, a plurality of connectors are hinged at one end of the storage device, a plurality of fixed blocks are provided at one end of the storage device, slots are provided on both sides of the plurality of fixed blocks, a sliding groove is provided at the bottom of the inner wall of the connector, a limiting rod is provided on the inner wall of the connector, two moving rods are slidably connected to the outer wall of the limiting rod, a spring is provided on one side of the two moving rods, the ends of the two springs are fixedly connected to one side of the inner wall of the connector, the insides of the two springs are slidably connected to the limiting rod, and the bottoms of the two moving rods are provided with A card connector, the ends of the two card connectors are both connected with the card slots through insertion, electric telescopic rods are provided on both sides of the inner wall of the card connector, and the ends of the two electric telescopic rods are provided with push plates, an LED display light is provided at one end of the card connector, and an infrared sensor is provided at the other end of the card connector. An operator is provided on one side of the medical refrigerator, a temperature display is provided at the middle of one end of the operator, an operation panel is provided at the bottom of the temperature display, a four-position operation button is provided at one end of the operation panel, an unlock button is provided at the bottom of the operation panel, a speaker is provided at the bottom of the unlock button, and a timer is provided at the bottom of the speaker;

[0009] The balancing component includes several temperature sensors arranged on the top of the inner wall of the medical refrigerator. A storage rack is arranged on the top of the inner wall of the medical refrigerator. Both sides of the storage rack are fixedly connected to both sides of the inner wall of the medical refrigerator. Several ventilation holes are opened inside the storage rack and the storage container. A second refrigerator is arranged on the top of the first refrigerator. The top of the second refrigerator is fixedly connected to the storage rack. One end of the storage rack is provided with several identification tables.

[0010] In an implementation scheme of the utility model, one end of the operation panel, the four-position operation buttons, the unlocking button, the speaker and the timer are all fixedly connected to the operator.

[0011] In one embodiment of the utility model, a protective door is connected to a frame at one end of the medical refrigerator, a handle is provided at one end of the protective door, and explosion-proof glass is embedded in the interior of the protective door.

[0012] In an implementation manner of the utility model, the outer walls of the two electric telescopic rods are both provided with reinforcement blocks, and one end of the two reinforcement blocks is fixedly connected to one end of the inner wall of the connector.

[0013] In an implementation manner of the utility model, a torsion spring is provided at the connection points between a plurality of the card connectors and the storage.

[0014] In one implementation of the utility model, a general display is arranged on the top of one end of the operator, and a PLC controller is arranged on the top of the operator.

[0015] In one implementation of the utility model, the first refrigerator, the electric telescopic rod, the LED display light, the infrared sensor, the temperature display, the four-position operation buttons, the unlocking button, the speaker, the timer, the temperature sensor, the second refrigerator and the main display are all electrically connected to the PLC controller, and the PLC controller is electrically connected to the external power supply.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1) When the timer reaches half an hour, the information is fed back to the PLC controller, and the PLC controller turns on the speaker and simultaneously turns on the LED display light on the connector of the vaccine storage location where the time was recorded before, making it flash red, so as to remind the user that half of the time is over, so that the user can give priority to using the vaccine in this storage slot. When the time exceeds one hour, the timer sends information to the PLC controller, and the PLC controller locks the electric telescopic rod in the connector of the storage slot where the time has exceeded. At this time, when the user selects the storage slot at the timeout again, it will be locked and cannot be opened. At this time, the user can only open it for processing by pressing and holding the unlock button for five seconds, thereby reminding the user that the vaccine cannot be used after the time has exceeded, so as to avoid the situation where the patient still develops a lesion due to the use after the time has exceeded. When the time of the day exceeds the vaccine expiration date, if the recorded vaccine has exceeded the expiration date but has not been used, the PLC controller will control the LED display light to turn purple, prompting that the vaccine in this box has exceeded the expiration date and cannot be used normally, so as to avoid the use of expired vaccines. Subsequently, the storage slot for expired vaccines is unlocked by the unlock button 2950, ​​so that use Personnel changes;

[0018] 2) Through the second refrigerator, it is convenient for users to turn on the temperature sensor through the PLC controller, so that the temperature sensor detects the temperature near the storage rack in real time. When the temperature is too high, the information is fed back to the PLC controller. The PLC controller will maximize the power modulation of the second refrigerator and quickly adjust the temperature near the storage rack. The cold air quickly enters the storage rack through the vents to cool the vaccines inside. It can effectively avoid the situation where the temperature is different due to opening the protective door back and forth to take and put the vaccine, thereby achieving the purpose of more balanced temperature in the medical refrigerator. In addition, through the identification table, it is convenient for users to quickly take and put the vaccine according to the markings on the identification table. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of one end of the utility model;

[0022] Figure 3 This is a perspective structural diagram of the other end of the utility model;

[0023] Figure 4 The figure is a schematic diagram of the internal structure of the card connector of the utility model.

[0024] In the figure: 100, medical refrigerator; 110, first refrigerator; 200, reminder component; 210, storage; 220, connector; 230, fixed block; 240, limit rod; 250, moving rod; 260, spring; 270, connector; 280, electric telescopic rod; 290, push plate; 2910, LED display light; 2920, operator; 2930, temperature display; 2940, four-position operation button; 2950, ​​unlock button; 2960, speaker; 2970, timer; 300, balance component; 310, temperature sensor; 320, storage rack; 330, vent; 340, second refrigerator; 350, identification table; 400, protection door; 500, handle; 600, reinforcement block; 700, total display. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 A storage refrigerator with a medical vaccine shelf life reminder function includes a medical refrigerator 100, a reminder component 200 and a balancing component 300.

[0027] For details, please refer to Figure 1 A first refrigerator 110 is disposed at the bottom of the inner wall of the medical refrigerator 100 .

[0028] See also Figure 1-4The reminder component 200 includes a storage container 210 arranged on the top of the first refrigerator 110, and a plurality of storage slots are provided inside the storage container 210. A plurality of connectors 220 are hingedly connected to one end of the storage container 210, and a plurality of fixing blocks 230 are provided at one end of the storage container 210. A plurality of fixing blocks 230 are provided on both sides of the plurality of fixing blocks 230. A sliding groove is provided at the bottom of the inner wall of the connector 220. A limiting rod 240 is provided on the inner wall of the connector 220. Two moving rods 250 are slidably connected to the outer wall of the limiting rod 240. A spring 260 is provided on one side of the two moving rods 250. The ends of the two springs 260 are fixedly connected to one side of the inner wall of the connector 220. The interiors of the two springs 260 are slidably connected to the limiting rod 240. The bottoms of the two moving rods 250 are provided with a connector. 270, the ends of the two card connectors 270 are both connected with the card slots, electric telescopic rods 280 are provided on both sides of the inner wall of the card connector 220, and the ends of the two electric telescopic rods 280 are both provided with pushing plates 290, an LED display light 2910 is provided at one end of the card connector 220, and an infrared sensor is provided at the other end of the card connector 220, an operator 2920 is provided on one side of the medical refrigerator 100, a temperature display 2930 is provided in the middle of one end of the operator 2920, an operation panel is provided at the bottom of the temperature display 2930, a four-position operation button 2940 is provided at one end of the operation panel, an unlocking button 2950 is provided at the bottom of the operation panel, a speaker 2960 is provided at the bottom of the unlocking button 2950, ​​and a timer 2970 is provided at the bottom of the speaker 2960.

[0029] In a specific embodiment, the storage device 210 is provided to facilitate the user to put the vaccine into the storage slot in the storage device 210, and scan and record the expiration date on the vaccine through the infrared sensor. In subsequent use, the user selects the storage slot to be selected through the four-way operation button 2940. It should be noted that "each LED display light 2910 has a built-in digital light". When the user operates the four-way operation button 2940 to select a storage slot, the temporarily selected one will display a yellow light through the PLC controller, and the others will not light up for selection. When the user selects the yellow light to the window to be used by pressing the four-way operation button 2940, press the unlock button 2950. At this time, the unlock button 2 950 feeds back the information to the PLC controller, which controls the yellow LED display light 2910 to turn green and turns on the connector 220 connected to the LED display light 2910. The PLC controller controls the electric telescopic rod 280 in the connector 220 to drive the push plate 290, push the moving rod 250 to move outward, and then contract the spring 260. The movement of the moving rod 250 will cause the connector 270 to slide out of the slot and then contact the fixed block 230 to cancel the limit of the connector 220. The connector 220 with the limit canceled will flip itself through the torsion spring, and then open the selected connector 220 to take out the vaccine in the storage tank. When the user takes out the vaccine, One-dose vaccine for multiple use After one use, the unused vaccine is scanned by the infrared sensor and put back into the storage slot. "It should be noted that when the user opens the selected card connector 220, it does not need to be closed. Wait until it is used up and then put it back and close it manually." At this time, the infrared sensor feeds back the information to the PLC controller, and the PLC controller counts through the timer 2970. When the timer 2970 reaches half an hour, the information is fed back to the PLC controller, and the PLC controller turns on the speaker 2960 and simultaneously turns on the LED display light 2910 on the card connector 220 of the vaccine storage location where the time was recorded, making it flash red. The timer 2970 will flash to remind the user that the time is half over, so that the user can give priority to using the vaccine in this storage slot. When the time exceeds one hour, the timer 2970 will send information to the PLC controller, and the PLC controller will lock the electric telescopic rod 280 in the connector 220 at the storage slot that has exceeded the time. At this time, when the user selects the storage slot at the timeout again, it will be locked and cannot be opened. At this time, the user can only open it for processing by pressing and holding the unlocking button 2950 for five seconds, thereby reminding the user that the vaccine cannot be used after the timeout, avoiding the patient from being used after the timeout. Adverse ReactionsIn the case of a vaccine that has expired and has not been used, the PLC controller will control the LED display light 2910 to turn the LED display light 2910 purple, indicating that the vaccine in this box has expired and cannot be used normally, so as to avoid the use of expired vaccines. Subsequently, the storage slot for expired vaccines is unlocked by unlocking button 2950 so that use | Personnel replacement.

[0030] See also Figure 2-3 The balancing component 300 includes a plurality of temperature sensors 310 arranged on the top of the inner wall of the medical refrigerator 100, a storage rack 320 is arranged on the top of the inner wall of the medical refrigerator 100, both sides of the storage rack 320 are fixedly connected to the two sides of the inner wall of the medical refrigerator 100, a plurality of ventilation holes 330 are opened inside the storage rack 320 and the storage container 210, a second refrigerator 340 is arranged on the top of the first refrigerator 110, the top of the second refrigerator 340 is fixedly connected to the storage rack 320, and a plurality of identification tables 350 are arranged at one end of the storage rack 320.

[0031] In a specific embodiment, the second refrigerator 340 is provided, which is convenient for the user to open the temperature sensor 310 through the PLC controller, so that the temperature sensor 310 detects the temperature near the storage rack 320 in real time. When the temperature is too high, the information is fed back to the PLC controller, and the PLC controller modulates the power of the second refrigerator 340 to the maximum, and quickly adjusts the temperature near the storage rack 320. The cold air quickly enters the storage rack 320 through the vent 330 to cool the vaccines inside, which can effectively avoid the situation where the temperature is different due to opening the protective door 400 back and forth to take and put the vaccine, thereby achieving the purpose of more balanced temperature in the medical refrigerator 100, and the identification table 350 is provided, which is convenient for the user to quickly take and put the vaccine according to the marking on the identification table 350.

[0032] See also Figure 1 The operation panel, the four-way operation button 2940 , the unlocking button 2950 , the speaker 2960 and one end of the timer 2970 are all fixedly connected to the operator 2920 .

[0033] In a specific embodiment, an operator 2920 is provided to facilitate supporting and fixing the operation panel, four-way operation buttons 2940, unlocking button 2950, ​​speaker 2960 and timer 2970 to make them more stable.

[0034] See also Figure 1 A protective door 400 is connected to one end of the medical refrigerator 100, a handle 500 is provided at one end of the protective door 400, and explosion-proof glass is embedded inside the protective door 400.

[0035] In a specific embodiment, a handle 500 is provided to facilitate a user to open the protective door 400 through the handle 500, and then take out and place the disposable vaccines stored in the storage rack 320. Through the explosion-proof glass, the user can observe the internal situation and take out and place quickly.

[0036] See also Figure 1 The outer walls of the two electric telescopic rods 280 are both provided with reinforcement blocks 600 , and one end of the two reinforcement blocks 600 is fixedly connected to one end of the inner wall of the connector 220 .

[0037] In a specific embodiment, the reinforcing block 600 is provided to facilitate the support and fixation of the electric telescopic rod 280, so that the electric telescopic rod 280 can be more stable during use, avoiding shaking during use.

[0038] See also Figure 1 , torsion springs are provided at the connection points between the plurality of connectors 220 and the storage 210 .

[0039] In a specific embodiment, a torsion spring is provided so that the connector 220 can change its angle through the torsion spring and open itself after contacting the limit position, thereby making it convenient for users to store vaccines for multiple uses.

[0040] See also Figure 2 A main display 700 is arranged on the top of one end of the operator 2920, and a PLC controller is arranged on the top of the operator 2920.

[0041] In a specific embodiment, a main display 700 is provided, so that the user can view the temperature gaps and the like through the main display 700, and the user can control the medical refrigerator 100 through the PLC controller.

[0042] See also Figure 1-4 The first refrigerator 110, the electric telescopic rod 280, the LED display light 2910, the infrared sensor, the temperature display 2930, the four-way operation button 2940, the unlocking button 2950, ​​the speaker 2960, the timer 2970, the temperature sensor 310, the second refrigerator 340 and the main display 700 are all electrically connected to the PLC controller, and the PLC controller is electrically connected to the external power supply.

[0043] In a specific embodiment, a PLC controller is provided to facilitate power-on control of electrical equipment, so that the electrical equipment can be powered on when it needs electricity, avoiding the situation where it cannot be powered on when it needs electricity.

[0044] When in use, the user puts the vaccine into the storage slot in the storage 210. When in subsequent use, the user selects the storage slot to be selected through the four-way operation button 2940. It should be noted that "each LED display light 2910 has a built-in digital light". When the user operates the four-way operation button 2940 to select a storage slot, the temporarily selected one will display a yellow light through the PLC controller, and the others will not light up for selection. When the user selects the yellow light to the window to be used by pressing the four-way operation button 2940, he presses the unlock button 2950. At this time, the unlock button 2950 feeds back information to the PLC controller, and the PLC controller The controller controls the yellow LED display light 2910 to turn green, and turns on the connector 220 connected to the LED display light 2910. The PLC controller controls the electric telescopic rod 280 in the connector 220, so that the electric telescopic rod 280 drives the push plate 290, pushes the moving rod 250 to move outward, and then contracts the spring 260. The movement of the moving rod 250 will cause the connector 270 to slide out of the slot and then contact the fixed block 230 to cancel the limit of the connector 220. The connector 220 with the limit canceled will flip itself through the torsion spring, and then open the selected connector 220 to take out the vaccine in the storage tank. Then when the user takes out the vaccine, One-dose vaccine for multiple use After one use, the unused vaccine is scanned by the infrared sensor and put back into the storage slot. "It should be noted that when the user opens the selected card connector 220, it does not need to be closed. Wait until it is used up and then put it back and close it manually." At this time, the infrared sensor feeds back the information to the PLC controller, and the PLC controller counts through the timer 2970. When the timer 2970 reaches half an hour, the information is fed back to the PLC controller, and the PLC controller turns on the speaker 2960 and simultaneously turns on the LED display light 2910 on the card connector 220 of the vaccine storage location where the time was recorded, making it flash red. The timer 2970 will flash to remind the user that the time is half over, so that the user can give priority to using the vaccine in this storage slot. When the time exceeds one hour, the timer 2970 will send information to the PLC controller, and the PLC controller will lock the electric telescopic rod 280 in the connector 220 at the storage slot that has exceeded the time. At this time, when the user selects the storage slot at the timeout again, it will be locked and cannot be opened. Then the user can only open it for processing by pressing and holding the unlock button 2950 for five seconds, thereby reminding the user that the vaccine cannot be used after the timeout, avoiding the patient from being used after the timeout. Adverse ReactionsThe second refrigerator 340 is provided to facilitate the user to open the temperature sensor 310 through the PLC controller, so that the temperature sensor 310 detects the temperature near the storage rack 320 in real time. When the temperature is too high, the information is fed back to the PLC controller, and the PLC controller maximizes the power modulation of the second refrigerator 340, and quickly adjusts the temperature near the storage rack 320. The cold air quickly enters the storage rack 320 through the vent 330 to cool the vaccines inside, which can effectively avoid the situation of different temperatures caused by opening the protective door 400 back and forth to take and put vaccines, thereby achieving the purpose of more balanced temperature in the medical refrigerator 100, and the identification table 350 is provided to facilitate the user to quickly take and put vaccines through the markings on the identification table 350.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A storage refrigerator with a medical vaccine quality reminder function, characterized in that: include: A medical refrigerator (100), wherein a first refrigerator (110) is provided at the bottom of an inner wall of the medical refrigerator (100); A reminder component (200), the reminder component (200) comprising a storage container (210) arranged on the top of a first refrigerator (110), a plurality of storage slots being provided inside the storage container (210), a plurality of card connectors (220) being hingedly connected to one end of the storage container (210), a plurality of fixing blocks (230) being provided at one end of the storage container (210), both sides of the plurality of fixing blocks (230) being provided with card slots, and the bottom of the inner wall of the card connector (220) A sliding groove is provided, the inner wall of the connector (220) is provided with a limiting rod (240), the outer wall of the limiting rod (240) is slidably connected to two moving rods (250), one side of the two moving rods (250) is provided with a spring (260), the ends of the two springs (260) are fixedly connected to one side of the inner wall of the connector (220), the insides of the two springs (260) are slidably connected to the limiting rod (240), and the bottoms of the two moving rods (250) are provided with A card connector (270) is provided, and the ends of the two card connectors (270) are both inserted and connected with the card slots. Electric telescopic rods (280) are provided on both sides of the inner wall of the card connector (220), and the ends of the two electric telescopic rods (280) are both provided with push plates (290). An LED display light (2910) is provided at one end of the card connector (220), and an infrared sensor is provided at the other end of the card connector (220). An operator is provided on one side of the medical refrigerator (100). (2920), a temperature display (2930) is provided in the middle of one end of the operator (2920), an operation panel is provided at the bottom of the temperature display (2930), a four-position operation button (2940) is provided at one end of the operation panel, an unlock button (2950) is provided at the bottom of the operation panel, a speaker (2960) is provided at the bottom of the unlock button (2950), and a timer (2970) is provided at the bottom of the speaker (2960); A balancing component (300), the balancing component (300) comprising a plurality of temperature sensors (310) arranged on the top of the inner wall of a medical refrigerator (100), a storage rack (320) being arranged on the top of the inner wall of the medical refrigerator (100), both sides of the storage rack (320) being fixedly connected to both sides of the inner wall of the medical refrigerator (100), a plurality of ventilation holes (330) being provided inside the storage rack (320) and the storage container (210), a second refrigerator (340) being arranged on the top of the first refrigerator (110), the top of the second refrigerator (340) being fixedly connected to the storage rack (320), and a plurality of identification tables (350) being arranged at one end of the storage rack (320).

2. A storage refrigerator with a medical vaccine quality reminder function according to claim 1, characterized in that: One end of the operation panel, the four-position operation button (2940), the unlocking button (2950), the speaker (2960) and the timer (2970) are all fixedly connected to the operator (2920).

3. A storage refrigerator with a medical vaccine quality reminder function according to claim 1, characterized in that: One end of the medical refrigerator (100) is connected to a protective door (400), one end of the protective door (400) is provided with a handle (500), and explosion-proof glass is embedded inside the protective door (400).

4. A storage refrigerator with a medical vaccine quality reminder function according to claim 1, characterized in that: The outer walls of the two electric telescopic rods (280) are both provided with reinforcement blocks (600), and one end of the two reinforcement blocks (600) is fixedly connected to one end of the inner wall of the connector (220).

5. The storage refrigerator with a medical vaccine quality reminder function according to claim 1, characterized in that: The connection points between the plurality of the snap connectors (220) and the storage container (210) are all provided with torsion springs.

6. A storage refrigerator with a medical vaccine quality reminder function according to claim 1, characterized in that: A main display (700) is arranged on the top of one end of the operator (2920), and a PLC controller is arranged on the top of the operator (2920).

7. A storage refrigerator with a medical vaccine quality reminder function according to claim 6, characterized in that: The first refrigerator (110), the electric telescopic rod (280), the LED display light (2910), the infrared sensor, the temperature display (2930), the four-position operation button (2940), the unlocking button (2950), the speaker (2960), the timer (2970), the temperature sensor (310), the second refrigerator (340) and the main display (700) are all electrically connected to the PLC controller, and the PLC controller is electrically connected to an external power supply.

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