Cold storage refrigeration equipment

Abstract

The utility model discloses cold storage refrigeration equipment which comprises an inner container, a cold storage box and a refrigeration system, and the inner container is provided with a storage space. The refrigerating system comprises a compressor, a condenser, a capillary tube and an evaporation assembly which are connected in sequence, the evaporation assembly comprises a first evaporator and a second evaporator which are connected in series, the first evaporator is used for refrigerating the cold storage agent, and the second evaporator is used for refrigerating the cold storage agent; the second evaporator is used for refrigerating the storage space. According to the cold storage refrigeration equipment, the overall structure is simple, the production cost of a refrigeration system can be low, the production cost of the cold storage refrigeration equipment is low, the refrigeration efficiency of the cold storage refrigeration equipment for refrigerating and cooling the storage space for the first time can be improved, and the refrigeration efficiency is improved. The storage space can be rapidly cooled to the preset temperature interval, the urgent storage requirement of a user is met, and the overall performance of the cold storage refrigeration equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of cold storage and refrigeration technology, and in particular to a cold storage and refrigeration device. Background Technology

[0002] Since the cost of electricity at night is lower than that during the day, in order to reduce the electricity cost of refrigerators, technicians designed an ice storage refrigerator. This refrigerator has a cold storage box between the evaporator and the inner liner. In the low electricity price range, electricity is used to cool the refrigerant in the cold storage box. In the high electricity price range, the refrigerant is used to cool the storage space in the inner liner.

[0003] However, when the ice storage refrigerator first cools the storage space, the cooling time is relatively long (3-4 days) because the ice storage refrigerator first cools the refrigerant in the cold storage box and then uses the refrigerant to cool the storage space inside the liner. This cannot meet the user's urgent storage needs. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a cold storage refrigeration device with a simple overall structure, which reduces the production cost of the refrigeration system and the cold storage refrigeration device itself. This improves the refrigeration efficiency of the cold storage refrigeration device in the initial cooling of the storage space, allowing the storage space to cool down to a preset temperature range more quickly, meeting the user's urgent storage needs, and improving the overall performance of the cold storage refrigeration device.

[0005] A cold storage refrigeration device according to an embodiment of the present invention includes: an inner liner having a storage space; a cold storage box surrounding the outer periphery of the inner liner and used to store a cold storage agent to cool the storage space; and a refrigeration system including a compressor, a condenser, a capillary tube, and an evaporation assembly connected in sequence, wherein the evaporation assembly includes a first evaporator and a second evaporator arranged in series, the first evaporator being used to cool the cold storage agent, and the second evaporator being used to cool the storage space.

[0006] The cold storage refrigeration equipment of this utility model has a simple overall structure, which reduces the number of components in the refrigeration system, thus lowering the production cost of the refrigeration system and the cold storage refrigeration equipment. Moreover, when the cold storage refrigeration equipment first performs refrigeration, the storage space inside the inner tank can be cooled down through the second evaporator, improving the refrigeration efficiency of the cold storage refrigeration equipment in the first cooling of the storage space. This allows the storage space to be cooled down to the preset temperature range more quickly, meeting the user's urgent storage needs and improving the overall performance of the cold storage refrigeration equipment.

[0007] According to some embodiments of the present invention, the first evaporator and the second evaporator are connected in series.

[0008] In some embodiments of this invention, in the circulation direction of the refrigeration system, the first evaporator is located upstream of the second evaporator.

[0009] In some embodiments of this utility model, the refrigeration system further includes: a first switching valve and a first switching pipeline. The first switching valve is connected between the first evaporator and the second evaporator. One end of the first switching pipeline is connected to the first switching valve, and the other end is connected downstream of the second evaporator. The first switching valve is used to switch the flow path of the first evaporator and the flow path of the first switching pipeline to switch the start and stop of the second evaporator.

[0010] According to some other embodiments of the present invention, in the circulation direction of the refrigeration system, the first evaporator is located downstream of the second evaporator.

[0011] According to some other embodiments of the present invention, the refrigeration system further includes: a second switching valve and a second switching pipeline, the second switching valve being connected upstream of the second evaporator, one end of the second switching pipeline being connected to the second switching valve, and the other end of the second switching pipeline being connected between the first evaporator and the second evaporator, the second switching valve being used to switch the flow path of the second evaporator and the flow path of the second switching pipeline.

[0012] According to some embodiments of the present invention, the first evaporator is located on the side of the cold storage box away from the inner liner.

[0013] According to some embodiments of the present invention, the cold storage and refrigeration equipment further includes: a heat-insulating partition, wherein the heat-insulating partition is sandwiched between the cold storage box and the inner liner.

[0014] In some embodiments of this utility model, the second evaporator is sandwiched between the heat insulation partition and the inner liner.

[0015] According to some optional embodiments of the present invention, the cold storage refrigeration device further includes: a first sensor and a first control module, wherein the first sensor is connected to the surface of the cold storage box near the inner liner, the first control module is communicatively connected to the first sensor, and the first control module is used to control the start and stop of the refrigeration system according to the temperature detected by the first sensor.

[0016] According to some optional embodiments of the present invention, the cold storage refrigeration device further includes: a second sensor and a second control module, wherein the second sensor is disposed in the storage space to detect the storage temperature, the second control module is communicatively connected to the second sensor, and the second control module is used to control the start and stop of the second evaporator according to the temperature detected by the second sensor.

[0017] According to some optional embodiments of the present invention, the first evaporator and the second evaporator are arranged in parallel.

[0018] In some optional embodiments of the present invention, the refrigeration system further includes a second switching valve, which is used to turn on and off the second evaporator.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of a cold storage and refrigeration device according to some embodiments of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the refrigeration system.

[0023] Figure label:

[0024] 100. Cold storage and refrigeration equipment;

[0025] 1. Inner liner; 11. Storage space;

[0026] 2. Cold storage box;

[0027] 3. Refrigeration system; 31. Evaporator assembly; 311. First evaporator; 312. Second evaporator; 33. Compressor; 34. Condenser; 35. Capillary tube; 36. First switching valve; 37. First switching pipeline; 38. Condenser fan;

[0028] 4. Thermal insulation partition;

[0029] 51. First sensor; 52. Second sensor. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] The following description, with reference to the accompanying drawings, describes a cold storage and refrigeration device 100 according to an embodiment of the present invention.

[0032] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, the cold storage refrigeration device 100 can be, for example, a refrigerator or a freezer. The cold storage refrigeration device 100 includes an inner liner and a cold storage box 2. The inner liner 1 has a storage space 11. The cold storage box 2 is arranged around the outer periphery of the inner liner 1 and is used to store a cold storage agent to cool the storage space 1. For example, the cold storage agent can be water or oil.

[0033] The refrigeration system 3 includes a compressor 33, a condenser 34, a capillary tube 35, and an evaporation assembly 31 connected in sequence. The evaporation assembly 31 includes a first evaporator 311 and a second evaporator 312 arranged in series. For example, in the refrigeration cycle of the refrigeration system 3, the first evaporator 311 can be located upstream of the second evaporator 312, or downstream of the second evaporator 312. The first evaporator 311 is used to refrigerate the cold storage refrigerant. For example, the first evaporator 311 can be installed close to the cold storage box 2. Specifically, the first evaporator 311 can be located on the side of the cold storage box 2 away from the inner liner 1. The second evaporator 312 is used to refrigerate the storage space 11. For example, the second evaporator 312 can be located between the cold storage box 2 and the inner liner 1.

[0034] Compared to the approach of "cooling the storage space by using the refrigerant in the cold storage tank", this invention can directly cool the storage space 11 of the inner liner 1 through the second evaporator 312 when the cold storage refrigeration device 100 first cools down. This improves the cooling efficiency of the cold storage refrigeration device 100 when cooling the storage space 11 for the first time, allowing the storage space 11 to cool down to the preset temperature range more quickly (for example, the preset temperature range can be greater than 0°C and less than or equal to 6°C), meeting the user's urgent storage needs and improving the overall performance of the cold storage refrigeration device 100.

[0035] After the storage space 11 is cooled to the preset temperature range, the first evaporator 311 can be used to cool the refrigerant in the cold storage box 2, and cool the refrigerant to the preset cold storage temperature (for example, the preset cold storage temperature can be greater than or equal to -3℃ and less than or equal to -1℃). In the high electricity price range, the refrigerant can be used to cool the storage space 11 of the inner liner 1, thereby reducing the operating cost of the cold storage refrigeration equipment 100.

[0036] For example, when the cold storage refrigeration equipment 100 first starts refrigeration, the first evaporator 311 and the second evaporator 312 can work simultaneously so that the cold storage refrigerant in the cold storage box 2 can be quickly cooled to the preset cold storage temperature.

[0037] By connecting the first evaporator 311 and the second evaporator 312 in series, the first evaporator 311 and the second evaporator 312 can share a set of compressor 33, condenser 34 and capillary tube 35, which reduces the number of components in the refrigeration system 3, lowers the production cost of the refrigeration system 3, and lowers the production cost of the cold storage refrigeration equipment 100.

[0038] According to the present invention, the cold storage refrigeration device 100 has a simple overall structure by setting a first evaporator 311 and a second evaporator 312 connected in series. This reduces the number of components in the refrigeration system 3, lowers the production cost of the refrigeration system 3, and lowers the production cost of the cold storage refrigeration device 100. Moreover, when the cold storage refrigeration device 100 first performs refrigeration, the second evaporator 312 can directly cool down the storage space 11 of the inner liner 1, improving the refrigeration efficiency of the cold storage refrigeration device 100 in cooling down the storage space 11 for the first time. This allows the storage space 11 to be cooled down to the preset temperature range more quickly, meeting the user's urgent storage needs and improving the overall performance of the cold storage refrigeration device 100.

[0039] Reference Figure 2 In some embodiments of this invention, in the circulation direction of the refrigeration system 3, the first evaporator 311 is located upstream of the second evaporator 312. That is, the refrigerant flowing out of the capillary tube 35 first flows into the first evaporator 311, evaporates in the first evaporator 311, and then flows into the second evaporator 312, where it evaporates again. This ensures that the energy of heat exchange during the evaporation of the refrigerant in the second evaporator 312 is not too high, and that the refrigeration efficiency of the second evaporator 312 on the storage space 11 is not too high. This effectively reduces the risk that the temperature in the storage space 11 will drop below zero degrees Celsius, causing the items inside to freeze and break.

[0040] Optionally, in some alternative embodiments of this utility model, in the circulation direction of the refrigeration system 3, the first evaporator 311 is located downstream of the second evaporator 312. That is, the refrigerant flowing out from the capillary tube 35 first flows into the second evaporator 312, evaporates in the second evaporator 312, and then flows into the first evaporator 311, where it evaporates again. This allows for higher energy exchange during the evaporation of the refrigerant in the first evaporator 311, resulting in higher refrigeration efficiency of the first evaporator 311 for the storage space 11. This effectively improves the refrigeration efficiency of the cold storage refrigeration device 100 in cooling the storage space 11 for the first time, allowing the temperature inside the storage space 11 to drop to the preset temperature range more quickly, meeting the user's urgent storage needs and improving the overall performance of the cold storage refrigeration device 100.

[0041] Reference Figure 2 In some embodiments of this utility model, the refrigeration system 3 further includes: a first switching valve 36 and a first switching pipe 37. The first switching valve 36 is connected between the first evaporator 311 and the second evaporator 312. One end of the first switching pipe 37 is connected to the first switching valve 36, and the other end of the first switching pipe 37 is connected downstream of the second evaporator 312. The first switching valve 36 is used to switch the flow path of the first evaporator 311 and the flow path of the first switching pipe 37 to switch the start and stop of the second evaporator 312. For example, the first switching valve 36 can be a three-way valve. Specifically, the first switching valve 36 can be a solenoid valve to realize the electrical control of the first switching valve 36.

[0042] When the cold storage refrigeration equipment 100 first starts cooling, the first switching valve 36 can be used to open the flow path of the second evaporator 312, that is, to start the second evaporator 312 and close the flow path of the first switching pipe 37, so that the refrigerant flowing out of the first evaporator 311 can flow through the second evaporator 312 to cool down the storage space 11 of the inner liner 1. After the temperature in the storage space 11 drops to the preset temperature range, the first switching valve 36 can be used to close the flow path of the second evaporator 312, that is, to close the second evaporator 312 and open the flow path of the first switching pipe 37, so that the refrigerant flowing out of the first evaporator 311 can flow back to the flow path of the compressor 33 through the first switching pipe 37.

[0043] By setting the first switching valve 36 and the first switching pipe 37, the second evaporator 312 can be connected in series to the refrigeration cycle of the first evaporator 311 to enable the second evaporator 312, or the second evaporator 312 can be isolated from the refrigeration cycle of the first evaporator 311 to enable the second evaporator 312 to be shut down. The structure is simple.

[0044] Moreover, after shutting down the second evaporator 312, the refrigerant in the refrigeration system 3 can be evaporated only once through the first evaporator 311 during the refrigeration cycle, which improves the circulation efficiency of the refrigerant and the refrigeration efficiency of the first evaporator 311 for the cold storage tank 2. This allows the cold storage to be cooled down quickly to the preset cold storage temperature, reduces the working time of the compressor 33, reduces the power cost of the cold storage refrigeration equipment 100, and improves the overall performance of the cold storage refrigeration equipment 100.

[0045] Optionally, in some other embodiments of this invention, in the circulation direction of the refrigeration system 3, the first evaporator 311 is located downstream of the second evaporator 312; the refrigeration system 3 may further include: a second switching valve and a second switching pipeline, the second switching valve being connected upstream of the second evaporator 312, one end of the second switching pipeline being connected to the second switching valve, and the other end of the second switching pipeline being connected between the first evaporator 311 and the second evaporator 312, the second switching valve being used to switch the flow path of the second evaporator 312 and the flow path of the second switching pipeline. For example, the second switching valve may be a three-way valve. Specifically, the second switching valve may be a solenoid valve to achieve electrical control of the second switching valve.

[0046] When the cold storage refrigeration equipment 100 first starts refrigeration, the second switching valve can be used to open the flow path of the second evaporator 312, that is, to start the second evaporator 312 and close the flow path of the second switching pipe, so that the refrigerant flowing out of the capillary tube 35 can flow to the second evaporator 312, and then flow through the second evaporator 312 to the first evaporator 311, cooling the storage space 11 of the inner liner 1 and the refrigerant in the cold storage box 2. After the storage space 11 is cooled to the preset temperature range, the second switching valve can be used to close the flow path between the second evaporators 312, that is, to close the second evaporator 312 and open the flow path of the second switching pipe, so that the refrigerant flowing out of the capillary tube 35 can flow through the second switching pipe to the first evaporator 311, and then flow back to the flow path of the compressor 33 through the first evaporator 311.

[0047] By setting a second switching valve and a second switching pipeline, the second evaporator 312 can be connected in series to the refrigeration cycle of the first evaporator 311 to enable the second evaporator 312, or the second evaporator 312 can be isolated from the refrigeration cycle of the first evaporator 311 to shut down the second evaporator 312. The structure is simple.

[0048] Moreover, after shutting down the second evaporator 312, the refrigerant in the refrigeration system 3 can be evaporated only once through the first evaporator 311 during the refrigeration cycle, which improves the circulation efficiency of the refrigerant and the refrigeration efficiency of the first evaporator 311 for the cold storage tank 2. This allows the cold storage to be cooled down quickly to the preset cold storage temperature, reduces the working time of the compressor 33, reduces the power cost of the cold storage refrigeration equipment 100, and improves the overall performance of the cold storage refrigeration equipment 100.

[0049] Reference Figure 1 According to some embodiments of this utility model, the first evaporator 311 is located on the side of the cold storage box 2 away from the inner liner 1. This avoids the first evaporator 311 directly cooling the storage space 11 of the inner liner 1, so that the cold storage refrigeration equipment 100 mainly cools the storage space 11 of the inner liner 1 directly through the second evaporator 312. This prevents the initial cooling efficiency of the refrigeration system on the storage space 11 from being too high, effectively reducing the risk of the temperature in the storage space 11 dropping below zero degrees Celsius and causing the items inside the box to freeze and break.

[0050] Reference Figure 1 According to some embodiments of this utility model, the cold storage refrigeration device 100 further includes: a thermal insulation partition 4, which is sandwiched between the cold storage box 2 and the inner liner 1. For example, the thermal insulation partition 4 can be a polystyrene foam component, an extruded polystyrene foam component, or a polyurethane foam component. This can reduce the heat exchange efficiency between the cold storage box 2 and the first evaporator 311, reduce the refrigeration efficiency of the refrigerant in the cold box in cooling the storage space 11, so that the refrigerant in the cold storage box 2 can be cooled to a lower temperature, prolonging the time for the refrigerant to cool the storage space 11. This allows the cold storage refrigeration device 100 to reliably weather high electricity price periods by using the refrigerant to cool the storage space 11, thereby improving the reliability of the cold storage refrigeration device 100.

[0051] Reference Figure 1 In some embodiments of this utility model, the second evaporator 312 is sandwiched between the insulation partition 4 and the inner liner 1. For example, the second evaporator 312 can be set tightly against the inner liner 1. This allows the second evaporator 312 to directly cool the storage space 11 through the inner liner 1, preventing the insulation partition 4 from reducing the cooling efficiency of the second evaporator 312 on the storage space 11, and improving the cooling efficiency of the second evaporator 312 on the storage space 11. This effectively improves the cooling efficiency of the cold storage refrigeration equipment 100 in the first cooling of the storage space 11, allowing the storage space 11 to cool down to the preset temperature range relatively quickly, meeting the user's urgent storage needs, and improving the overall performance of the cold storage refrigeration equipment 100.

[0052] Reference Figure 1According to some optional embodiments of this utility model, the cold storage refrigeration device 100 further includes: a first sensor 51 and a first control module. The first sensor 51 is connected to the surface of the cold storage box 2 near the inner liner 1. The first control module is communicatively connected to the first sensor 51. For example, the first control module can be communicatively connected to the first sensor 51 via a wiring harness or wireless technology. The first control module is used to control the start and stop of the refrigeration system 3 based on the temperature detected by the first sensor 51. For example, the refrigeration system 3 further includes a compressor 33 and a condenser fan 38. The condenser fan 38 is used to drive outside air to exchange heat with the condenser 34. The first control module controls the start and stop of the refrigeration system 3 by controlling the start and stop of the compressor 33 and the condenser fan 38.

[0053] When the temperature detected by the first sensor 51 is greater than the preset cold storage temperature of the cold storage agent, the first control module can control the refrigeration system 3 to start and use the first evaporator 311 to cool the cold storage agent, so as to ensure the time for the cold storage agent to cool the storage space 11 and improve the reliability of the cold storage refrigeration equipment 100.

[0054] When the temperature detected by the first sensor 51 is lower than the preset cold storage temperature of the cold storage agent, the first control module can control the refrigeration system 3 to shut down, ending the cooling of the cold storage agent by the first evaporator 311. This reduces the risk that the cold storage agent at an excessively low temperature will lower the temperature in the storage space 11 to outside the preset temperature range, causing the items inside the box to freeze and be damaged. This ensures that the temperature in the storage space 11 can be maintained within the preset temperature range, effectively guaranteeing the safety of the items inside the box.

[0055] By placing the first sensor 51 on the surface of the cold storage box 2 near the inner liner 1, the influence of the colder first evaporator 311 on the first sensor 51 can be reduced, making the temperature of the cold storage agent detected by the first sensor 51 more accurate, so that the first control module can reliably and accurately control the shut-off and start-up of the refrigeration system 3.

[0056] Reference Figure 1 According to some optional embodiments of the present invention, the cold storage refrigeration device 100 further includes: a second sensor 52 and a second control module. The second sensor 52 is disposed in the storage space 11 to detect the storage temperature. The second control module is communicatively connected to the second sensor 52. For example, the second control module can be communicatively connected to the second sensor 52 via a wiring harness or wireless technology. The second control module is used to control the start and stop of the second evaporator 312 based on the temperature detected by the second sensor 52.

[0057] For example, when the first evaporator 311 and the second evaporator 312 are connected in series, and the first evaporator 311 is located upstream of the second evaporator 312, the second control module can control the start and stop of the second evaporator 312 through the first switching valve 36. When the first evaporator 311 and the second evaporator 312 are connected in series, and the first evaporator 311 is located downstream of the second evaporator 312, the second control module can control the start and stop of the second evaporator 312 through the second switching valve.

[0058] When the temperature detected by the second sensor 52 is greater than the preset temperature range of the storage space 11, the second control module can control the refrigeration system 3 to start and use the second evaporator 312 to cool down the storage space 11 so that the storage space 11 can be quickly cooled down to the preset temperature range.

[0059] When the temperature detected by the second sensor 52 is lower than the preset temperature range of the storage space 11, the second control module can control the second evaporator 312 to shut down, thereby ending the cooling of the storage space 11 by the second evaporator 312. This reduces the risk of the items inside the box freezing due to the temperature in the storage space 11 dropping outside the preset temperature range, and ensures that the temperature in the storage space 11 can be maintained within the preset temperature range, effectively guaranteeing the safety of the items inside the box.

[0060] Reference Figure 1 and Figure 2 According to some specific embodiments of the present invention, the first evaporator 311 and the second evaporator 312 are connected in series, and the first evaporator 311 is located upstream of the second evaporator 312. The cold storage refrigeration device 100 includes a first control module, a first sensor 51 and a second sensor 52. The first control module is communicatively connected to the second sensor 52 and connected to the first switching valve 36. The first control module is used to control the first switching valve 36 to switch the start and stop of the second evaporator 312 according to the temperature detected by the second sensor 52. The preset temperature range of the storage space 11 is greater than 0°C and less than or equal to 6°C, and the preset cold storage temperature of the cold storage agent is greater than or equal to -3°C and less than or equal to -1°C.

[0061] When the temperature detected by the first sensor 51 is greater than -3℃, the first control module determines that the temperature of the refrigerant is greater than the preset refrigerant storage temperature and controls the refrigeration system 3 to start, that is, controls the compressor 33 and the condenser fan 38 of the condenser 34 to start, and uses the first evaporator 311 to cool down the refrigerant.

[0062] When the temperature detected by the first sensor 51 is less than -1℃, the first control module determines that the temperature of the refrigerant is less than the preset refrigerant storage temperature. The first control module can then control the refrigeration system 3 to shut down, that is, shut down the compressor 33 and the condenser fan 38 of the condenser 34, and end the cooling of the refrigerant by the first evaporator 311.

[0063] When the temperature detected by the second sensor 52 is greater than 6°C, the first control module determines that the temperature of the storage space 11 is within the preset temperature range. The first control module can control the first switching valve 36 to open the flow path of the second evaporator 312 and use the second evaporator 312 to cool down the storage space 11 so that the storage space 11 can be quickly cooled down to the preset temperature range.

[0064] When the temperature detected by the second sensor 52 is less than 5°C, the first control module determines that the temperature of the storage space 11 is within the preset temperature range. The second control module can then control the first switching valve 36 to close the flow path of the second evaporator 312 and open the flow path of the first switching pipe 37, thereby ending the cooling of the storage space 11 by the second evaporator 312.

[0065] When the temperature detected by the second sensor 52 is less than or equal to 0°C, the first control module determines that the temperature of the storage space 11 is too cold, posing a risk of freezing and damaging the items inside. The first control module then shuts down the refrigeration system 3, specifically by turning off the compressor 33 and the condenser fan 38 of the condenser 34, ending the cooling of the refrigerant by the first evaporator 311, and ending the cooling of the storage space 11 by the second evaporator 312. This reduces the risk of prolonged overcooling of the storage space 11 and subsequent freezing and damage to the items inside, thus improving the reliability of the cold storage refrigeration equipment 100.

[0066] In the description of this utility model, it should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cold storage refrigeration device, characterized in that, include: The inner liner has storage space; A cold storage box is arranged around the outer periphery of the inner liner and is used to store a cold storage agent to cool the storage space. A refrigeration system includes: a compressor, a condenser, a capillary tube, and an evaporation assembly connected in sequence. The evaporation assembly includes a first evaporator and a second evaporator arranged in series. The first evaporator is used to cool the refrigerant, and the second evaporator is used to cool the storage space.

2. The cold storage and refrigeration equipment according to claim 1, characterized in that, In the circulation direction of the refrigeration system, the first evaporator is located upstream of the second evaporator.

3. The cold storage refrigeration equipment according to claim 2, characterized in that, The refrigeration system further includes: a first switching valve and a first switching pipeline. The first switching valve is connected between the first evaporator and the second evaporator. One end of the first switching pipeline is connected to the first switching valve, and the other end is connected downstream of the second evaporator. The first switching valve is used to switch the flow path of the first evaporator and the flow path of the first switching pipeline to switch the start and stop of the second evaporator.

4. The cold storage refrigeration equipment according to claim 1, characterized in that, In the circulation direction of the refrigeration system, the first evaporator is located downstream of the second evaporator.

5. The cold storage refrigeration equipment according to claim 4, characterized in that, The refrigeration system further includes: a second switching valve and a second switching pipeline. The second switching valve is connected upstream of the second evaporator. One end of the second switching pipeline is connected to the second switching valve, and the other end of the second switching pipeline is connected between the first evaporator and the second evaporator. The second switching valve is used to switch the flow path of the second evaporator and the flow path of the second switching pipeline.

6. The cold storage refrigeration equipment according to claim 1, characterized in that, The first evaporator is located on the side of the cold storage tank away from the inner liner.

7. The cold storage refrigeration equipment according to claim 1, characterized in that, Also includes: An insulating partition is sandwiched between the cold storage box and the inner liner.

8. The cold storage refrigeration equipment according to claim 7, characterized in that, The second evaporator is sandwiched between the insulation partition and the inner liner.

9. The cold storage refrigeration equipment according to claim 1, characterized in that, Also includes: A first sensor and a first control module are provided. The first sensor is connected to the surface of the cold storage box near the inner liner. The first control module is communicatively connected to the first sensor. The first control module is used to control the start and stop of the refrigeration system based on the temperature detected by the first sensor.

10. The cold storage refrigeration equipment according to claim 1, characterized in that, Also includes: A second sensor and a second control module are used. The second sensor is located in the storage space to detect the temperature in the storage space. The second control module is communicatively connected to the second sensor and is used to control the start and stop of the second evaporator according to the temperature detected by the second sensor.

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