Vaccine storage equipment and its control methods

Abstract

This invention relates to the field of vaccine storage technology, specifically providing a vaccine storage device and its control method, aiming to solve the problem of poor cooling performance in existing vaccine cabinets. To this end, the vaccine storage device of this invention includes: a vaccine storage component, comprising a storage chamber and an evaporator, the evaporator being capable of direct or indirect heat exchange with the storage chamber; and a refrigeration control integrated system, comprising a refrigeration drive unit, which includes a compressor and a condenser, the compressor, condenser, and evaporator being connected to form a refrigeration circuit; the vaccine storage component and the refrigeration control integrated system are arranged side-by-side, allowing for a regular arrangement of the vaccine storage space and preventing the cooling effect from being affected.

Description

Technical Field

[0001] This invention relates to the field of vaccine storage technology, and specifically provides a vaccine storage device and its control method. Background Technology

[0002] Most existing vaccine cabinets adopt an integrated structure, with their refrigeration units (compressors, condensers, etc.) and control units typically concentrated in a corner of the equipment. This layout results in irregular shapes of the vaccine storage space inside the cabinet, making it impossible to form a neat and uniform storage area. Irregular spaces not only severely reduce the effective volume utilization of the cabinet but also cause many inconveniences for the orderly placement and retrieval of vaccines. More importantly, the irregular space leads to a significant reduction in refrigeration efficiency, making it difficult to guarantee temperature control stability and temperature uniformity.

[0003] In conclusion, the existing vaccine cabinets have poor cooling performance. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem of poor cooling effect of existing vaccine cabinets.

[0005] In a first aspect, the present invention provides a vaccine storage device, comprising: a vaccine storage component including a storage chamber and an evaporator, the evaporator being capable of direct or indirect heat exchange with the storage chamber; and a refrigeration control integrated system including a refrigeration drive unit comprising a compressor and a condenser, the compressor, the condenser, and the evaporator being connected to form a refrigeration circuit; the vaccine storage component and the refrigeration control integrated system are arranged side-by-side. The present invention, by arranging the vaccine storage component and the refrigeration control integrated system side-by-side, ensures that they are not nested and are independent of each other, allowing for separate structural designs based on functional requirements without considering spatial interference between them. This layout completely avoids the refrigeration control integration system encroaching on the storage room space, thus allowing for better planning of the storage room's shape. It prevents the refrigeration control integration system from affecting the storage room's space and causing irregularities in its shape, allowing the storage room to be planned as a regular shape such as a cuboid or cube, improving space utilization. It also facilitates the neat placement and retrieval of vaccines. The regular storage room structure makes it easier to wind or arrange evaporators, heat exchange pipes, and other cooling components, achieving a uniform distribution of cooling components and avoiding cooling dead zones. The regular storage room is also more conducive to heat transfer, thereby improving the overall cooling effect and better ensuring the stability and safety of vaccine storage.

[0006] In the preferred embodiment of the aforementioned vaccine storage device, the vaccine storage assembly further includes a heat exchange component. The evaporator exchanges heat with the heat exchange component, and the heat exchange component can exchange heat with the storage chamber. This invention, by setting a heat exchange component between the evaporator and the storage chamber, utilizes this component to conduct the cold energy generated by the evaporator to the storage chamber, effectively preventing damage to the stored vaccine when the evaporator temperature is too low, thus ensuring the safety of vaccine storage.

[0007] In the preferred technical solution of the above-mentioned vaccine storage device, the refrigeration control integrated system further includes a control unit, which is capable of controlling the operation of the compressor and / or recording the temperature of the vaccine storage component and / or recording the operating status of the compressor and / or recording the number of times the door of the vaccine storage device is opened and closed and / or uploading the recorded information to the cloud; the control unit and the refrigeration drive unit are arranged side by side vertically, and the vaccine storage component and the refrigeration control integrated system are arranged side by side horizontally.

[0008] In the preferred technical solution of the above-mentioned vaccine storage device, the refrigeration control integrated system further includes a voltage stabilizing unit. The input terminal of the voltage stabilizing unit is connected to an external power supply, and the output terminal of the voltage stabilizing unit is connected to the refrigeration drive unit and the control unit respectively. The control unit, the voltage stabilizing unit and the refrigeration drive unit are arranged side by side in the vertical direction.

[0009] In the preferred embodiment of the aforementioned vaccine storage device, the heat exchange component is disposed outside the storage chamber and surrounds the storage chamber. The heat exchange component of this invention, arranged around the storage chamber, enables comprehensive and uniform cooling of the storage chamber, further improving the cooling effect and temperature stability.

[0010] In the preferred embodiment of the aforementioned vaccine storage device, the heat exchange component includes multiple ice blocks arranged around the storage chamber. The heat exchange component of this invention uses ice blocks, which can be filled with purified water or energy storage materials, ensuring a sustained temperature within the storage chamber even after a power outage.

[0011] In the preferred embodiment of the aforementioned vaccine storage device, each ice block includes an ice block body, a first protrusion, and a second protrusion. The first and second protrusions are located on opposite sides of the ice block body. The distance from the first protrusion to the outer sidewall of the storage chamber is greater than the distance from the second protrusion to the outer sidewall of the storage chamber. In two adjacent ice blocks, the inner side of the first protrusion of the preceding ice block abuts against the outer side of the second protrusion of the following ice block, thereby blocking the gap between the second protrusion of the following ice block and the body of the preceding ice block. The heat exchange component of this invention is composed of multiple ice blocks spliced ​​together. Through the mutual cooperation of the first and second protrusions, the gap between two adjacent ice blocks can be effectively blocked, reducing cold loss and thus achieving a more efficient cold transfer effect.

[0012] In the preferred embodiment of the aforementioned vaccine storage device, the heat exchange component includes a bent ice block and a flat ice block. The bent ice block is disposed at the corner of the storage chamber, and at least one flat ice block is disposed on the side wall of the storage chamber. The heat exchange component of this invention ensures that the bent ice block fills the arc-shaped or right-angled gap at the corner of the storage chamber, avoiding the problem of a single flat ice block failing to fit properly at the corner and forming a weak area of ​​cooling capacity.

[0013] In the preferred embodiment of the aforementioned vaccine storage device, multiple heat exchange components are arranged sequentially in a vertical direction and surround the storage chamber. An evaporator is correspondingly arranged around the outside of each heat exchange component, and the multiple evaporators are connected in parallel in the refrigeration circuit; or, multiple evaporators are arranged sequentially in a vertical direction and surround the storage chamber, and are connected in parallel in the refrigeration circuit; and / or, the evaporator piping is arranged in a spiral configuration. This invention, by setting multiple heat exchange components and ensuring that each heat exchange component corresponds one-to-one with an evaporator, enables precise zoned cooling of the storage chamber, allowing for flexible adjustment according to the temperature control requirements of different areas, and adapting to diverse storage scenarios.

[0014] In the preferred embodiment of the above-mentioned vaccine storage device, the vaccine storage component includes a shell and an inner liner disposed within the shell, the heat exchange component is located outside the inner liner, and the evaporator is located outside the heat exchange component.

[0015] In the preferred embodiment of the above-mentioned vaccine storage device, the outer side of the evaporator and the inner side of the outer shell are filled with a heat insulation layer; and / or, a heat insulation plate is provided between the inner liner and the heat exchange component; and / or, the vaccine storage assembly further includes a door, the storage chamber is provided with an access port, the door is configured to close the access port, and / or the door is a foam door, and / or a sealing component is provided between the door and the storage chamber. This invention, by adding a heat insulation plate between the heat exchange component and the inner liner, avoids direct contact between the heat exchange component and the inner liner, thereby effectively preventing the vaccine from being frozen; the heat insulation layer, the foam door, and the sealing component prevent the external environment from affecting the temperature inside the storage chamber, achieving a better heat preservation effect.

[0016] In a second aspect, the present invention also provides a control method for a vaccine storage device, the vaccine storage device comprising: a vaccine storage component, the vaccine storage component including a storage chamber and an evaporator, the evaporator being capable of directly or indirectly exchanging heat with the storage chamber; a refrigeration control integrated system, the refrigeration control integrated system including a refrigeration drive unit, the refrigeration drive unit including a compressor and a condenser, the compressor, the condenser and the evaporator being connected to form a refrigeration circuit; the vaccine storage component and the refrigeration control integrated system being arranged side by side; a plurality of evaporators being arranged sequentially in a vertical direction, each evaporator being arranged around the storage chamber, the plurality of evaporators being arranged in parallel on the refrigeration circuit; a control valve being provided upstream of each evaporator; each evaporator corresponding to a temperature control zone within the storage chamber; the control method comprising: acquiring the temperature within the temperature control zone; if the temperature within the temperature control zone is greater than or equal to a preset temperature, controlling the compressor to operate, and controlling the evaporator corresponding to the temperature control zone to operate. Based on this, uneven temperature within the storage chamber, or excessively high temperature in a certain area, is avoided.

[0017] In a preferred embodiment of the above control method, the control method further includes: if the temperature within the temperature control zone is lower than the preset temperature, then the evaporator corresponding to the temperature control zone is prohibited from operating. This prevents excessive cooling and saves energy.

[0018] In a preferred embodiment of the above control method, the control method includes: if the temperature of all the temperature control zones is lower than the preset temperature, then the compressor is prohibited from operating. This ensures that the overall cooling effect of the storage room meets the standard, reduces unnecessary energy consumption, and effectively saves equipment operating costs.

[0019] Option 1. A vaccine storage device, characterized in that the vaccine storage device comprises: a vaccine storage component, the vaccine storage component including a storage chamber and an evaporator, the evaporator being able to directly or indirectly exchange heat with the storage chamber; a refrigeration control integrated system, the refrigeration control integrated system including a refrigeration drive unit, the refrigeration drive unit including a compressor and a condenser, the compressor, the condenser and the evaporator being connected to form a refrigeration circuit; the vaccine storage component and the refrigeration control integrated system are arranged side by side.

[0020] Option 2. The vaccine storage device according to Option 1, characterized in that the vaccine storage component further includes a heat exchange component, the evaporator exchanges heat with the heat exchange component, and the heat exchange component can exchange heat with the storage chamber.

[0021] Option 3. The vaccine storage device according to Option 1, characterized in that the refrigeration control integrated system further includes a control unit, which is capable of controlling the operation of the compressor and / or recording the temperature of the vaccine storage component and / or recording the operating status of the compressor and / or recording the number of times the door of the vaccine storage device is opened and closed and / or uploading the recorded information to the cloud; the control unit and the refrigeration drive unit are arranged side by side vertically, and the vaccine storage component and the refrigeration control integrated system are arranged side by side horizontally.

[0022] Option 4. The vaccine storage device according to Option 3, characterized in that the refrigeration control integrated system further includes a voltage stabilizing unit, the input terminal of the voltage stabilizing unit is connected to an external power supply, and the output terminal of the voltage stabilizing unit is respectively connected to the refrigeration drive unit and the control unit; the control unit, the voltage stabilizing unit and the refrigeration drive unit are arranged side by side in the vertical direction.

[0023] Option 5. The vaccine storage device according to any one of Options 2 to 4, characterized in that the heat exchange component is disposed outside the storage chamber and is arranged around the storage chamber.

[0024] Option 6. The vaccine storage device according to Option 5, characterized in that the heat exchange component includes a plurality of ice packs, which are arranged around the storage chamber.

[0025] Option 7. The vaccine storage device according to Option 6, characterized in that each ice pack includes an ice pack body, a first protrusion and a second protrusion, the first protrusion and the second protrusion are located on both sides of the ice pack body, the distance from the first protrusion to the outer sidewall of the storage chamber is greater than the distance from the second protrusion to the outer sidewall of the storage chamber; in two adjacent ice packs, the inner side of the first protrusion of the preceding ice pack abuts against the outer side of the second protrusion of the following ice pack to block the gap between the second protrusion of the following ice pack and the body of the preceding ice pack.

[0026] Option 8. The vaccine storage device according to Option 6, characterized in that the heat exchange component includes a bent ice block and a flat ice block, the bent ice block is disposed at the corner of the storage chamber, and at least one flat ice block is disposed on the side wall of the storage chamber.

[0027] Option 9. The vaccine storage device according to Option 5, characterized in that a plurality of heat exchange components are arranged sequentially in the vertical direction and respectively surround the storage chamber, and an evaporator is correspondingly arranged around the outside of each heat exchange component, and the plurality of evaporators are arranged in parallel in the refrigeration circuit; or, the plurality of evaporators are arranged sequentially in the vertical direction and respectively surround the storage chamber, and are arranged in parallel in the refrigeration circuit; and / or, the pipes of the evaporators are arranged in a spiral arrangement.

[0028] Option 10. A vaccine storage device according to any one of Options 2 to 4, characterized in that the vaccine storage assembly includes a shell and an inner liner disposed within the shell, the heat exchange member is located outside the inner liner, and the evaporator is located outside the heat exchange member.

[0029] Option 11. The vaccine storage device according to Option 10, characterized in that the outer side of the evaporator and the inner side of the outer shell are filled with a heat insulation layer; and / or, a heat insulation plate is provided between the inner liner and the heat exchange component; and / or, the vaccine storage assembly further includes a door, the storage chamber is provided with an access port, the door is configured to close the access port, and / or the door is a foam door, and / or a sealing component is provided between the door and the storage chamber.

[0030] Option 12. A control method for a vaccine storage device, characterized in that the vaccine storage device comprises: a vaccine storage component, the vaccine storage component including a storage chamber and an evaporator, the evaporator being able to directly or indirectly exchange heat with the storage chamber; a refrigeration control integrated system, the refrigeration control integrated system including a refrigeration drive unit, the refrigeration drive unit including a compressor and a condenser, the compressor, the condenser and the evaporator being connected to form a refrigeration circuit; the vaccine storage component and the refrigeration control integrated system being arranged side by side; a plurality of evaporators being arranged sequentially in a vertical direction, each evaporator being arranged around the storage chamber, the plurality of evaporators being arranged in parallel on the refrigeration circuit; a control valve being provided upstream of each evaporator; each evaporator corresponding to a temperature control zone within the storage chamber; the control method comprising: acquiring the temperature within the temperature control zone; if the temperature within the temperature control zone is greater than or equal to a preset temperature, controlling the compressor to operate, and controlling the evaporator corresponding to the temperature control zone to operate.

[0031] Scheme 13. The control method according to Scheme 12 is characterized in that the control method further includes: if the temperature in the temperature control zone is lower than the preset temperature, then the evaporator corresponding to the temperature control zone is prohibited from working.

[0032] Scheme 14. The control method according to Scheme 12, characterized in that the control method includes: if the temperature of all the temperature control zones is lower than the preset temperature, then the compressor is prohibited from working. Attached Figure Description

[0033] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which: Figure 1 This is a top view of the internal structure of the vaccine storage device of the present invention; Figure 2 It is a schematic diagram of a refrigeration circuit that includes an evaporator; Figure 3 This is a front view of the internal structure of the vaccine storage device of the present invention; Figure 4 This is a schematic diagram of multiple ice blocks according to the present invention; Figure 5 This is a schematic diagram of the evaporator winding method in an embodiment that includes a heat exchange component; Figure 6 This is a schematic diagram of the winding method of the evaporator in an embodiment that includes two heat exchange components; Figure 7 This is a schematic diagram of a refrigeration circuit that includes two evaporators; Figure 8 This is a flowchart of the main steps of the control method of the present invention; Figure 9 This is a detailed flowchart of a preferred embodiment of the control method of the present invention.

[0034] Reference numerals: 1. Vaccine storage assembly; 11. Storage chamber; 11A. First temperature control zone; 11B. Second temperature control zone; 111. Loading / unloading port; 12. Inner liner; 13. Insulation board; 14. Heat exchange component; 14A. Flat ice pack; 14B. Bending ice pack; 141. Ice pack body; 142. First protrusion; 143. Second protrusion; 15. Evaporator; 15A. Cold medium input end; 15B. Cold medium output end; 16. Insulation layer; 17. Outer shell; 18. Door; 19. Sealing component; 2. Refrigeration control integrated system; 21. Refrigeration drive unit; 211. Compressor; 212. Condenser; 213. Control valve; 22. Control unit; 23. Voltage stabilizing unit; 3. Refrigeration circuit; 4. Vaccine basket. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0036] It should be noted that in the description of this invention, terms such as "upper," "lower," "front," "rear," "left," and "right," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The cooling control integrated system 2 of the existing vaccine storage equipment mentioned in the background art is usually concentrated in a corner of the equipment. This layout will cause the shape of the vaccine storage space inside the cabinet to be irregular, which will affect the cooling effect. The present invention sets the vaccine storage component 1 and the cooling control integrated system 2 side by side, so that the vaccine storage space can be arranged in a regular manner, and the cooling effect is avoided.

[0039] Specifically, see Figures 1 to 3 The vaccine storage device includes: a vaccine storage component 1, which includes a storage chamber 11 and an evaporator 15, the evaporator 15 being able to exchange heat directly or indirectly with the storage chamber 11; and a refrigeration control integrated system 2, which includes a refrigeration drive unit 21, which includes a compressor 211 and a condenser 212, the compressor 211, the condenser 212 and the evaporator 15 being connected to form a refrigeration circuit 3; the vaccine storage component 1 and the refrigeration control integrated system 2 are arranged side by side.

[0040] The vaccine storage component 1 and the refrigeration control integrated system 2 are independent of each other and can be structurally designed separately according to functional requirements without considering spatial interference. This layout completely avoids the refrigeration control integrated system 2 encroaching on the space of the storage chamber 11, thus allowing for better planning of the shape of the storage chamber 11. It prevents the location of the refrigeration control integrated system 2 from affecting the space of the storage chamber 11 and causing irregularities in its shape. The storage chamber 11 can be planned as a regular shape such as a cuboid or cube, improving the space utilization of the storage chamber 11. It also facilitates the neat placement and retrieval of vaccines. The regular structure of the storage chamber 11 makes it easier to wind or arrange components such as the evaporator 15 and heat exchange pipes to cool the storage chamber 11, achieving a uniform distribution of cooling components and avoiding cooling dead zones. The regular shape of the storage chamber 11 is also more conducive to heat transfer, thereby improving the overall cooling effect and better ensuring the stability and safety of vaccine storage.

[0041] Preferably, the vaccine storage component 1 is rectangular or cubic in shape, and the refrigeration control integrated system 2 is also rectangular or cubic in shape; wherein, the height and width of the vaccine storage component 1 and the refrigeration control integrated system 2 are consistent, which can also be understood as: the two have the same length in at least two of the XYZ axis directions. When connecting the two, it is only necessary to connect the evaporator 15 to the refrigeration circuit 3 and fix the two together, making the connection operation convenient and efficient.

[0042] In one embodiment, the vaccine storage assembly 1 has a separate first housing, and all components of the vaccine storage assembly 1 are centrally located within the first housing. At least one first through hole is provided on one side of the first housing, through which the input and output pipes of the evaporator 15 pass. The refrigeration control integrated system 2 has a separate second housing, and at least one second through hole is provided on one side of the second housing, through which the input pipe of the compressor 211 and the output pipe of the condenser 212 pass. During connection, the output pipe of the condenser 212 is first connected to the input pipe of the evaporator 15, and the output pipe of the evaporator 15 is connected to the input pipe of the compressor 211. Then, the first housing and the second housing need to be connected. The core technological advantage of the two independent housings lies in enabling the modular separation and assembly of the vaccine storage component 1 and the refrigeration control integrated system 2. During assembly, the two modules can be independently integrated and debugged without interference between their assembly processes. This effectively avoids the problem in traditional integrated assembly where "after assembling one module, the other module becomes inconvenient to assemble due to space obstruction or positional interference," significantly improving assembly efficiency. At the same time, the modular design facilitates later maintenance and repair. When one module malfunctions, the corresponding housing can be disassembled for repair or replacement without disassembling the entire device, reducing maintenance costs and downtime losses. Furthermore, the independent housings provide excellent protection for their respective internal components, extending the overall service life of the equipment.

[0043] In another embodiment, the vaccine storage device has a cabinet with partitions forming two side-by-side spaces. The vaccine storage component 1 and the integrated cooling control system 2 are respectively assembled in these two spaces. This design eliminates the need for separate designing and manufacturing of a first and second housing for each module; the two modules can be integrated and installed within a single integrated cabinet. This saves on the material investment for two separate housings, reducing housing material costs. Furthermore, during assembly, there is no need to separately connect and fix the two housings; simply install the vaccine storage component 1 and the integrated cooling control system 2 into their respective spaces within the cabinet, and then complete the piping connections.

[0044] See next. Figure 3In this preferred embodiment, the refrigeration control integrated system 2 further includes a control unit 22, which can perform any one or more of the following tasks: controlling the operation of the compressor 211, recording the temperature inside the vaccine storage component 1, recording the operating status of the compressor 211 (operating power, time, etc.), recording the number of times the door 18 of the vaccine storage device is opened and closed, and uploading the recorded information to the cloud; the refrigeration control integrated system 2 also includes a voltage regulator unit 23, the input of which is connected to an external power supply, and the output of which is connected to the refrigeration drive unit 21 and the control unit 22 respectively. In the event of unstable power, the voltage regulator unit 23 can stabilize the output voltage to 230V±10% to ensure equipment safety; the control unit 22, the voltage regulator unit 23 and the refrigeration drive unit 21 are arranged side by side in the vertical direction.

[0045] In one embodiment, the second housing of the refrigeration control integrated system 2 or the space it occupies is provided with two partitions, which form three installation spaces. The control unit 22, the voltage regulator unit 23, and the refrigeration drive unit 21 are respectively integrated and assembled in the three installation spaces. The one-piece housing combined with the partition separation structure reduces assembly steps, ensures neat wiring, and facilitates overall assembly and disassembly.

[0046] In another embodiment, the refrigeration control integrated system 2 includes a fourth housing, a fifth housing, and a sixth housing. The control unit 22, the voltage regulator unit 23, and the refrigeration drive unit 21 are respectively integrated and assembled in the three housings. Each housing is independently packaged and assembled, resulting in a high degree of modularity. In the event of a single module failure, it is not necessary to disassemble the entire system; only the corresponding housing unit needs to be inspected and replaced individually.

[0047] It should be noted that, in this invention, when the control unit 22, voltage stabilizing unit 23, cooling drive unit 21 and vaccine storage component 1 are connected by lines and components, through holes can be opened on the side wall of the housing, the independent installation space or the inner wall of the partition cavity corresponding to each unit, so as to allow the lines to pass through and be arranged, so as to realize the wiring connection between each module and vaccine storage component 1.

[0048] The refrigeration control integrated system 2 of the present invention has a high degree of integration and can adapt to vaccine storage components 1 of different sizes.

[0049] Although in this preferred embodiment, the control unit 22, the voltage regulator unit 23, and the cooling drive unit 21 are arranged side by side in the vertical direction, this is not limiting. Alternatively, the control unit 22 and the voltage regulator unit 23 can be arranged side by side in front and behind or left and right above the cooling drive unit 21. Alternatively, the cooling control integrated system 2 can include only the cooling drive unit 21 or only the cooling drive unit 21 and the control unit 22 located above the cooling drive unit 21. As long as the components within the cooling control integrated system 2 are integrated and arranged side by side with the vaccine storage component 1, the changes in the arrangement of the control unit 22, the voltage regulator unit 23, and the cooling drive unit 21, as well as the addition or reduction of components, do not deviate from the basic principles of the present invention and will fall within the protection scope of the present invention.

[0050] In one embodiment, the piping of the evaporator 15 is arranged around the inner wall of the storage chamber 11; the evaporator 15 directly exchanges heat with the storage chamber 11, the number of components is small, it is easy to install, and the cold energy transfer is faster and more efficient.

[0051] In other embodiments, the piping of the evaporator 15 is arranged around the outer wall of the storage chamber 11, and the evaporator 15 directly exchanges heat with the storage chamber 11. The cold energy is transferred and buffered through the outer wall of the storage chamber 11 to prevent the evaporator 15 from becoming too cold and causing frostbite to the vaccine.

[0052] When the evaporator 15 is arranged around the inner or outer wall of the storage chamber 11, the frequency of the compressor 211 and the flow rate of the refrigerant flowing through the evaporator 15 need to be precisely controlled to avoid excessive heat absorption by the evaporator 15, which could freeze the vaccine in the storage chamber 11. To better prevent the evaporator 15 from freezing the vaccine, in this preferred embodiment, the vaccine storage assembly 1 also includes a heat exchange component 14. The evaporator 15 exchanges heat with the heat exchange component 14, and the heat exchange component 14 can exchange heat with the storage chamber 11, so that the evaporator 15 can indirectly exchange heat with the storage chamber 11 through the heat exchange component 14. By adding the heat exchange component 14 as an intermediate heat conduction buffer, the rate at which the low-temperature cold energy of the evaporator 15 is directly conducted to the storage chamber 11 can be effectively reduced, avoiding excessively rapid temperature drop and freezing point, and effectively preventing vaccine damage and efficacy failure caused by excessive cooling of the evaporator 15.

[0053] Furthermore, in this preferred embodiment, the heat exchange component 14 is disposed outside the storage chamber 11 and surrounds the storage chamber 11, enabling uniform transfer of cooling energy. Specifically, as shown... Figure 1 and Figure 3As shown, the heat exchange component 14 includes multiple ice blocks, which are spliced ​​together to form a cuboid ring structure and arranged to surround the storage chamber 11. The ice blocks can be filled with pure water or PCM energy storage material, which can be frozen into ice under the cooling effect of the evaporator 15 and transfer cold energy to the vaccine storage area to ensure that the temperature of the vaccine storage area is 2℃~8℃. By using the ice block splicing method, the number of ice blocks can be flexibly increased or decreased according to the specifications of different storage chambers 11, without the need to customize special ice blocks for specific specifications.

[0054] In another embodiment, the heat exchange component 14 includes only one ice block, which is integral, in the shape of a cuboid ring, and arranged around the storage chamber 11. The integral ice block is easy to install and has no splicing gaps, which reduces the loss of cold energy from the gaps.

[0055] In another example, the heat exchange component 14 may not be an ice pack, but any other component capable of heat exchange, as long as it can exchange heat with the evaporator 15 and transfer the cold energy transferred by the evaporator 15 to the storage chamber 11.

[0056] See next. Figure 4 In this preferred embodiment, each ice floe includes an ice floe body 141, a first protrusion 142, and a second protrusion 143. The first protrusion 142 and the second protrusion 143 are located on both sides of the ice floe body 141, that is, in the circumferential direction of the ice floe, the first protrusion 142 and the second protrusion 143 are located at the upstream end and the downstream end of the ice floe body 141, respectively. The distance from the first protrusion 142 to the outer wall of the storage chamber 11 is greater than the distance from the second protrusion 143 to the outer wall of the storage chamber 11, that is, the first protrusion 142 is farther away from the storage chamber 11 than the second protrusion 143. Each of the ice floe body 141, the first protrusion 142, and the second protrusion 143 has a receiving cavity, and the three receiving cavities are interconnected, allowing water or energy storage material to reach the first protrusion 142 and the second protrusion 143. Thus, the first protrusion 142 and the second protrusion 143 can also store and transfer cold energy. Figure 4 In a counter-clockwise direction, each pair of adjacent ice floes is named the preceding ice floe and the following ice floe. In a pair of adjacent ice floes, the inner side of the first protrusion 142 of the preceding ice floe abuts against the outer side of the second protrusion 143 of the following ice floe, thus blocking the gap between the second protrusion 143 of the following ice floe and the body 141 of the preceding ice floe. Through the cooperation of the first protrusion 142 and the second protrusion 143, the gap between the two adjacent ice floes can be effectively blocked, reducing cold loss and achieving a more efficient cold transfer effect.

[0057] Further reading Figure 4The heat exchange component 14 includes a bent ice block 14B and a flat ice block 14A. The bent ice block 14B is located at the corner of the storage chamber 11, and at least one flat ice block 14A is provided on each of the four side walls of the storage chamber 11. The bent ice block 14B is right-angled, and its bend can be a rounded transition, a right angle, or other shapes. Figure 4 As shown, there are four bent ice blocks 14B, which are respectively set at the four corners of the storage chamber 11. Multiple flat ice blocks 14A are set on the outer side of the four side walls of the storage chamber 11. Through the combination of bent ice blocks 14B and flat ice blocks 14A, the storage chamber 11 can be completely covered. The bent ice blocks 14B fill the arc or right angle gaps at the corners, avoiding the problem that a single flat ice block cannot fit at the corners and forms a weak area of ​​cold energy.

[0058] It should be noted that the ice pack can surround the front, back, left, and right sides of the storage chamber 11, or it can surround the top, bottom, front, and back sides of the storage chamber 11. Changes in the surrounding method do not deviate from the basic principles of the present invention and will fall within the protection scope of the present invention.

[0059] Additionally, it should be noted that the ice pack is preferably a cuboid structure with length, width, and thickness. The length and width of the ice pack form a surface that fits and wraps around the storage chamber 11. The length direction of the ice pack can be set to vertical or horizontal according to actual installation requirements.

[0060] The benefits of using ice packs in heat exchange component 14 also include: when the external power supply is disconnected, the ice in the ice pack will continue to transfer cold energy to storage chamber 11, ensuring vaccine safety for more than 50 hours.

[0061] Furthermore, compared to the irregular arrangement of the refrigeration control integrated system 2 or its placement in a corner inside the vaccine storage component 1, this embodiment arranges the vaccine storage component 1 and the refrigeration control integrated system 2 side by side, which has the following advantages: First, ice packs are easier to arrange. Since ice packs will freeze during operation, placing them directly inside the storage chamber 11 could cause frostbite to the vaccines; therefore, ice packs can only be arranged on the outside of the storage chamber 11. If the position of the refrigeration control integrated system 2 affects the shape of the storage chamber 11, making it irregular, it will further increase the difficulty of arranging the ice packs. Second, the regular shape of the storage chamber 11 is conducive to the uniform transfer of cold energy by the ice packs. This solution, by arranging them side by side, avoids the interference of the refrigeration control integrated system 2 on the shape of the storage chamber 11, keeping the storage chamber 11 in a regular cuboid structure, thereby ensuring that the ice packs can be arranged tightly and continuously around the chamber, making the cold energy transfer more efficient and uniform, and ultimately ensuring that the temperature in the vaccine storage area remains stable between 2℃ and 8℃.

[0062] See next. Figure 5 ,like Figure 5 As shown, in this preferred embodiment, the pipes of the evaporator 15 are arranged in a spiral, evenly wrapped around the ice block, and in direct contact with the ice block, resulting in rapid cooling. The evaporator 15 is evenly wrapped around the ice block, resulting in high cooling efficiency and good uniformity of water freezing. The pipes of the evaporator 15 can be copper pipes or aluminum pipes. In other embodiments, the evaporator can also be in the form of an aluminum sheet-pressed blown evaporator 15, which has a plate-like structure and is attached to the surface of the ice block. Multiple plate-like structures can be arranged around the ice block.

[0063] See next. Figure 6 and Figure 7 ,like Figure 6 and 7 As shown, in another embodiment, two heat exchange components 14 are included, arranged sequentially in the vertical direction and surrounding the storage chamber 11. An evaporator 15 is correspondingly arranged around the outside of each heat exchange component 14. The two evaporators 15 are connected in parallel in the refrigeration circuit 3, as shown. Figure 6 As shown, the lower heat exchange component 14 surrounds the storage chamber 11. The pipes of the lower evaporator 15 are spirally wound around the lower heat exchange component 14. The upper heat exchange component 14 surrounds the storage chamber 11. The pipes of the upper evaporator 15 are spirally wound around the upper heat exchange component 14. The refrigerant inlet 15A of the evaporator 15 is located at the lower right of the evaporator 15, and the refrigerant outlet 15B of the evaporator 15 is located at the upper right of the evaporator 15. Both refrigerant inlet ends 15A are connected to the outlet end of the condenser 212, and both refrigerant outlet ends 15B are connected to the input end of the compressor 211. A control valve 213 is connected upstream of the refrigerant inlet end 15A. The control valve 213 is used to control the on / off state and is part of the refrigeration control integrated system 2. The evaporator 15 and heat exchange component 14 located at the top are used to cool the first temperature control zone 11A, and the evaporator 15 and heat exchange component 14 located at the bottom are used to cool the second temperature control zone 11B. This enables precise cooling of the storage chamber 11 in different zones, and can be flexibly adjusted according to the temperature control requirements of different zones to adapt to diverse storage scenarios.

[0064] It should be noted that the present invention does not impose any restrictions on the number of heat exchange components 14, evaporators 15 and the number of temperature control zones in the storage chamber 11. Alternatively, multiple (more than two) heat exchange components 14 can be arranged sequentially in the vertical direction and surround the storage chamber 11. Each heat exchange component 14 is surrounded by an evaporator 15, and multiple evaporators 15 are connected in parallel in the refrigeration circuit 3.

[0065] In another example, excluding the heat exchange component 14, multiple evaporators 15 are arranged sequentially in the vertical direction and surround the storage chamber 11, and are connected in parallel in the refrigeration circuit 3. Each evaporator 15 corresponds to a temperature control zone in the storage chamber 11, reducing the number of components, facilitating installation, and making the transfer of cold energy more direct and faster.

[0066] Multiple evaporators 15 are arranged in parallel in the refrigeration circuit 3, and the piping of each evaporator 15 is spirally wound. Compared with a single integral spirally wound piping, the parallel arrangement allows the refrigerant to be distributed to each evaporator 15, resulting in a shorter refrigerant flow path and lower flow resistance within each evaporator 15. This reduces the load on the compressor 211, improves the energy efficiency ratio of the refrigeration system, and achieves a faster and more uniform cooling effect.

[0067] Furthermore, each temperature control zone is equipped with a temperature sensor to detect its temperature. The control unit 22 can receive the temperature information detected by the sensor and control the refrigeration drive unit 21 to operate based on the temperature information, ensuring that the water in the ice pack is in a frozen state. If the temperature sensor detects a temperature rise and the rise is greater than or equal to a preset range, it controls the refrigeration drive unit 21 to operate.

[0068] See Figure 2 and Figure 7 In other embodiments, a throttling component may be provided on the refrigeration circuit 3 between the downstream of the condenser 212 and the upstream of the evaporator 15 to reduce the pressure of the refrigerant, thereby reducing its evaporation temperature and enabling the evaporator 15 to operate at a lower temperature. The throttling component is part of the refrigeration control integrated system 2 and avoids affecting the arrangement of the vaccine storage component 1.

[0069] See next. Figure 5 The vaccine storage assembly 1 includes an outer shell 17 and an inner liner 12 disposed inside the outer shell 17. The inner liner 12 contains a storage chamber 11. A heat exchange component 14 is located outside the inner liner 12, and an evaporator 15 is located outside the heat exchange component 14.

[0070] Furthermore, the outer side of the evaporator 15 and the inner side of the outer shell 17 are filled with a heat insulation layer 16. The heat insulation layer 16 can significantly reduce the heat exchange between the evaporator 15 and the heat exchange component 14 and the external environment, block the heat from the external environment from penetrating into the interior, and also block the cold energy of the heat exchange component 14 and the evaporator 15 from being transferred outward, thereby reducing the energy loss of the refrigeration system and ensuring that the temperature of the vaccine storage area remains stable at 2℃~8℃ for a long time. An embedded cavity can be provided on the heat insulation layer 16 to embed the evaporator 15 and the heat exchange component 14, or the heat exchange component 14 and the evaporator 15 can be installed first and then the heat insulation material is filled to form the heat insulation layer 16.

[0071] Furthermore, an insulation board 13, or protective insulation cotton, is provided between the inner liner 12 and the heat exchange component 14 to prevent the temperature of the heat exchange component 14 from getting too low and thus freezing the vaccine. In addition, the vaccine storage assembly 1 also includes a door 18, and the storage chamber 11 is provided with a pick-up and drop-off port 111. The door 18 is configured to close the pick-up and drop-off port 111. The door 18 is a foam door to effectively reduce cold loss. A sealing member 19 is provided between the door 18 and the storage chamber 11. The sealing member 19 can be a sealing ring or a sealing strip.

[0072] Furthermore, a door switch alarm is installed inside the door 18. If the door is open for longer than the preset time, an alarm will be triggered in time, and relevant information will be recorded and uploaded to the cloud.

[0073] Furthermore, the vaccine storage device also includes a display screen, which is part of the refrigeration control integrated system 2, located on the top surface, and is connected to the control unit 22, the voltage stabilizing unit 23 and the refrigeration drive unit 21, and can display various data in real time.

[0074] In addition, vaccine baskets 4 can be placed in the storage room 11. The vaccine baskets 4 are plastic baskets that can be stacked, used individually, or hung at the retrieval port 111.

[0075] See next. Figure 8 The main steps of the control method for the vaccine storage device of the present invention include: Step S1: Obtain the temperature within the temperature control zone.

[0076] Specifically, the current temperature value is collected in real time by temperature sensors installed in each temperature control zone.

[0077] Step S2: Determine whether the temperature in the temperature control zone is greater than or equal to the preset temperature (for example, the preset temperature is any value within the range of 2℃ to 8℃, such as 5℃; of course, the preset temperature can also be 2℃, 3℃, 4℃, 6℃, 7℃ or 8℃).

[0078] Specifically, if so, the compressor 211 is controlled to operate, and the evaporator 15 corresponding to the temperature control zone is also controlled to operate (i.e., the control valve 213 upstream of the evaporator 15 is opened to allow refrigerant to flow). If not, no further action can be taken temporarily or the system can enter a waiting state.

[0079] The control method of the present invention is based on the real-time temperature of each temperature control zone, and selectively controls the start-up and operation status of the corresponding evaporator 15. This ensures that the overall cooling effect of the storage chamber 11 meets the standard, reduces unnecessary energy consumption, and effectively saves equipment operating costs.

[0080] See next. Figure 9 ,like Figure 9As shown, a preferred embodiment of the control method of the present invention includes the following steps: Step S101: Obtain the temperature within the temperature control zone. Similar to the aforementioned step S1, the real-time temperature of each temperature control zone is collected by a temperature sensor.

[0081] Step S102: If the temperature in a certain temperature control zone is greater than or equal to the preset temperature, then the compressor 211 is controlled to operate, and the evaporator 15 corresponding to that temperature control zone is also controlled to operate. That is, the control valve 213 upstream of the evaporator 15 is opened, allowing the refrigerant to flow through the evaporator 15 for cooling. After completing step S102, the process returns to step S101.

[0082] Step S103: If the temperature in a certain temperature control zone is lower than the preset temperature, the evaporator 15 corresponding to that temperature control zone is prohibited from operating. That is, the control valve 213 upstream of the evaporator 15 is closed to stop the refrigerant from entering the evaporator 15, preventing excessive cooling and saving energy. After completing step S103, return to step S101.

[0083] Step S104: If the temperature in all temperature-controlled zones is lower than the preset temperature, the compressor 211 is disabled. That is, when all temperature-controlled zones have reached or fallen below the set temperature, the compressor 211 stops, and the entire refrigeration system suspends operation. Once the temperature in any temperature-controlled zone rises to a level greater than or equal to the preset temperature, the compressor 211 is restarted following the above steps, and the corresponding evaporator 15 is controlled to operate. After completing step S104, return to step S101.

[0084] It should be noted that steps S102, S103, and S104 can be executed simultaneously or separately depending on the actual temperature conditions. For example, if some temperatures in multiple temperature control zones exceed the preset temperature, some temperatures are too low, and all temperature control zones are not simultaneously below the preset temperature, step S104 will not meet the conditions. The compressor 211 will continue to operate, but only the control valve 213 of the evaporator 15 corresponding to the temperature exceeding the preset temperature will be opened, while the control valve 213 corresponding to the temperature too low will be closed. Only when all temperature control zones are below the preset temperature will step S104 be executed to stop the compressor 211.

[0085] Through the above control method, the present invention achieves independent and precise temperature regulation of multiple temperature control zones in the storage chamber 11, avoiding uneven temperature and energy waste caused by overall refrigeration. At the same time, through the linkage control of compressor 211 and zone valves, it ensures that the vaccine is always within the safe storage temperature range (2℃~8℃).

[0086] The vaccine storage device to which the above control method is applicable only needs to have the following structure: the vaccine storage device includes: a vaccine storage component 1, which includes a storage chamber 11 and an evaporator 15, the evaporator 15 being able to directly or indirectly exchange heat with the storage chamber 11; a refrigeration control integrated system 2, which includes a refrigeration drive unit 21, which includes a compressor 211 and a condenser 212, the compressor 211, the condenser 212 and the evaporator 15 being connected to form a refrigeration circuit 3; the vaccine storage component 1 and the refrigeration control integrated system 2 are arranged side by side; multiple evaporators 15 are arranged sequentially in the vertical direction, each evaporator 15 is arranged around the storage chamber 11, and the multiple evaporators 15 are arranged in parallel on the refrigeration circuit 3; a control valve 213 is provided upstream of each evaporator 15; each evaporator 15 corresponds to a temperature control zone within the storage chamber 11.

[0087] Those skilled in the art will understand that the aforementioned vaccine storage device also includes other well-known structures, such as processors, controllers, and memories. These memories include, but are not limited to, random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), volatile memory, non-volatile memory, serial memory, parallel memory, or registers. Processors include, but are not limited to, CPLD / FPGA, DSP, ARM processors, and MIPS processors. To avoid unnecessarily obscuring the embodiments of this disclosure, these well-known structures are not shown in the accompanying drawings.

[0088] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A vaccine storage device, characterized in that, The vaccine storage device includes: A vaccine storage assembly (1) includes a storage chamber (11) and an evaporator (15), wherein the evaporator (15) is capable of directly or indirectly exchanging heat with the storage chamber (11); The refrigeration control integrated system (2) includes a refrigeration drive unit (21), which includes a compressor (211) and a condenser (212). The compressor (211), the condenser (212) and the evaporator (15) are connected to form a refrigeration circuit (3). The vaccine storage component (1) and the refrigeration control integrated system (2) are arranged side by side.

2. The vaccine storage device according to claim 1, characterized in that, The vaccine storage assembly (1) further includes a heat exchange component (14), the evaporator (15) exchanges heat with the heat exchange component (14), and the heat exchange component (14) can exchange heat with the storage chamber (11).

3. The vaccine storage device according to claim 1, characterized in that, The refrigeration control integrated system (2) also includes a control unit (22), which can control the operation of the compressor (211) and / or record the temperature of the vaccine storage component (1) and / or record the operating status of the compressor (211) and / or record the number of times the door (18) of the vaccine storage device is opened and closed and / or upload the recorded information to the cloud. The control unit (22) and the refrigeration drive unit (21) are arranged side by side, one above the other, and the vaccine storage component (1) and the refrigeration control integrated system (2) are arranged side by side, one to the left and one to the right.

4. The vaccine storage device according to claim 3, characterized in that, The refrigeration control integrated system (2) also includes a voltage regulator unit (23). The input end of the voltage regulator unit (23) is connected to an external power supply, and the output end of the voltage regulator unit (23) is connected to the refrigeration drive unit (21) and the control unit (22) respectively. The control unit (22), the voltage stabilizing unit (23), and the refrigeration drive unit (21) are arranged side by side in the vertical direction.

5. The vaccine storage device according to any one of claims 2 to 4, characterized in that, The heat exchange component (14) is disposed outside the storage chamber (11) and is arranged around the storage chamber (11).

6. The vaccine storage device according to claim 5, characterized in that, The heat exchange component (14) includes multiple ice packs and is arranged around the storage chamber (11).

7. The vaccine storage device according to claim 6, characterized in that, Each ice block includes an ice block body (141), a first protrusion (142) and a second protrusion (143), the first protrusion (142) and the second protrusion (143) being located on both sides of the ice block body (141), and the distance from the first protrusion (142) to the outer wall of the storage chamber (11) being greater than the distance from the second protrusion (143) to the outer wall of the storage chamber (11); In two adjacent ice floes, the inner side of the first protrusion (142) of the preceding ice floe abuts against the outer side of the second protrusion (143) of the following ice floe, so as to block the gap between the second protrusion (143) of the following ice floe and the body (141) of the preceding ice floe.

8. The vaccine storage device according to claim 6, characterized in that, The heat exchange component (14) includes a bent ice block (14B) and a flat ice block (14A). The bent ice block (14B) is located at the corner of the storage chamber (11), and at least one flat ice block (14A) is provided on the side wall of the storage chamber (11).

9. The vaccine storage device according to claim 5, characterized in that, Multiple heat exchange components (14) are arranged sequentially in the vertical direction and surround the storage chamber (11) one circumference respectively. Each heat exchange component (14) is surrounded by an evaporator (15) on its outer side. Multiple evaporators (15) are connected in parallel in the refrigeration circuit (3). Alternatively, multiple evaporators (15) are arranged sequentially in the vertical direction and surround the storage chamber (11) one circumference, and are connected in parallel in the refrigeration circuit (3); And / or, the piping of the evaporator (15) is arranged in a spiral configuration.

10. The vaccine storage device according to any one of claims 2 to 4, characterized in that, The vaccine storage assembly (1) includes a shell (17) and an inner liner (12) disposed within the shell (17), the heat exchange member (14) is located outside the inner liner (12), and the evaporator (15) is located outside the heat exchange member (14).

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