Control method, device, cold storage, and storage medium for cold storage

Abstract

The present application relates to the field of refrigeration technology and discloses a control method for a cold storage. The cold storage is provided with a first refrigeration system and a second refrigeration system. The first refrigeration system includes a first evaporator, a second evaporator, a first cold storage water tank, and a first fan. The first evaporator is installed inside the first cold storage water tank, and the second evaporator is installed relative to the first fan. The second refrigeration system includes a third evaporator, a fourth evaporator, a second cold storage water tank, and a second fan. The third evaporator is installed inside the second cold storage water tank, and the fourth evaporator is installed relative to the second fan. The method includes: obtaining the ambient temperature of the cold storage; and controlling the operation of the first refrigeration system and the second refrigeration system based on the temperature difference between the ambient temperature of the cold storage and the target temperature of the cold storage. The present application can quickly reduce the temperature inside the storage at the beginning of storage and maintain the low temperature inside the storage by storing cold in the later stage of storage, which is conducive to saving energy. The present application also discloses a control device for the cold storage, the cold storage, and a storage medium.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, for example, to a control method and device for a cold storage, a cold storage, and a storage medium. Background Art

[0002] Currently, cold storage is used to store some refrigerated goods. There are generally two common types of cold storage on the market: one for medium- and long-term storage, and the other for temporary storage in transit. The former typically uses an air-cooled finned evaporator as part of the refrigeration system and is installed inside the cold storage. Its refrigeration unit operates in a normally powered mode. When the refrigeration system is operating, a fan is used to move the air inside the storage through the evaporator for heat exchange, thereby lowering the temperature inside the storage. The latter, on the other hand, has a built-in cold storage water tank. The evaporator, as part of the refrigeration system, is installed inside the cold storage water tank. It first cools the cold storage liquid to store cold energy, and then uses natural convection to cool the air inside the storage tank, thereby lowering the temperature inside the storage tank.

[0003] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0004] The first type of cold storage quickly recovers temperature after a power outage, making it difficult to use in areas with unstable power supply or when storing valuable goods. Unless an additional power generation system is installed, there is a risk of damage to the goods. The second type of cold storage has a slower cooling rate, making it difficult to reduce the temperature to the optimal storage temperature within a limited time, especially when storing large quantities of goods simultaneously in the summer. Therefore, a cold storage solution that can achieve both rapid cooling and cold storage is urgently needed.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiments provide a control method, device, cold storage, and storage medium for a cold storage, which can quickly reduce the temperature inside the storage at the initial stage of storage and maintain the low temperature inside the storage by storing cold in the later stage of storage, thereby facilitating energy conservation.

[0008] In some embodiments, the cold storage is provided with a first refrigeration system and a second refrigeration system, the first refrigeration system includes a first evaporator, a second evaporator, a first cold storage water tank and a first fan, the first evaporator is installed inside the first cold storage water tank, and the second evaporator is installed relative to the first fan, the second refrigeration system includes a third evaporator, a fourth evaporator, a second cold storage water tank and a second fan, the third evaporator is installed inside the second cold storage water tank, and the fourth evaporator is installed relative to the second fan; the method includes: obtaining the ambient temperature of the cold storage; controlling the operation of the first refrigeration system and the second refrigeration system according to the temperature difference between the ambient temperature of the cold storage and the target temperature of the cold storage.

[0009] In some embodiments, the device includes: a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned control method for the cold storage when running the program instructions.

[0010] In some embodiments, the cold storage includes: a first refrigeration system, including a first evaporator, a second evaporator, a first cold storage water tank and a first fan, the first evaporator is installed inside the first cold storage water tank, the second evaporator is installed relative to the first fan, the first evaporator is arranged in the first branch, the second evaporator is arranged in the second branch, and the first branch and the second branch are arranged in parallel; a second refrigeration system, including a third evaporator, a fourth evaporator, a second cold storage water tank and a second fan, the third evaporator is installed inside the second cold storage water tank, the fourth evaporator is installed relative to the second fan, the third evaporator is arranged in the third branch, the fourth evaporator is arranged in the fourth branch, and the third branch and the fourth branch are arranged in parallel; and the above-mentioned control device for the cold storage is electrically connected to the first refrigeration system and the second refrigeration system.

[0011] In some embodiments, the storage medium stores program instructions, and when the program instructions are run, the above-mentioned control method for the cold storage is executed.

[0012] The control method, device, cold storage, and storage medium for cold storage provided in the embodiments of the present disclosure can achieve the following technical effects:

[0013] In the embodiment of the present disclosure, the cold storage is provided with two refrigeration systems, and each refrigeration system is equipped with an air-cooled evaporator and a water-cooled evaporator. Multiple evaporators can be cooled individually or in combination to reasonably reduce the temperature inside the storage. By detecting the ambient temperature of the cold storage and calculating the temperature difference between it and the target temperature of the cold storage, the embodiment of the present disclosure can determine the heat load in the storage. Furthermore, based on the heat load, by controlling the precise operation of the first refrigeration system and the second refrigeration system, the embodiment of the present disclosure can quickly reduce the temperature in the storage at the beginning of storage, and maintain the low temperature in the storage by storing cold in the later stage of storage, which is conducive to saving energy.

[0014] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0016] Figure 1 This is a schematic diagram of a cold storage environment provided by an embodiment of the present disclosure;

[0017] Figure 2 This is a schematic structural diagram of a cold storage provided by an embodiment of the present disclosure;

[0018] Figure 3 is a structural diagram of another cold storage provided by an embodiment of the present disclosure;

[0019] Figure 4 is a schematic diagram of a control method for a cold storage provided by an embodiment of the present disclosure;

[0020] Figure 5 is a schematic diagram of another control method for a cold storage provided by an embodiment of the present disclosure;

[0021] Figure 6 is a schematic diagram of another control method for a cold storage provided by an embodiment of the present disclosure;

[0022] Figure 7 is a schematic diagram of another control method for a cold storage provided by an embodiment of the present disclosure;

[0023] Figure 8 Schematic diagram of a control device for a cold storage provided by an embodiment of the present disclosure.

[0024] Reference numerals:

[0025] 100: First refrigeration system; 101: First evaporator; 102: Second evaporator; 103: First cold storage tank; 104: First fan; 105: First branch; 106: Second branch; 107: First throttle valve; 108: Second throttle valve; 109: First condenser; 110: First compressor; 111: First auxiliary circuit; 112: First control valve; 113: First liquid storage tank; 200: Second refrigeration system; 201: Third evaporator; 20 2: Fourth evaporator; 203: Second cold storage water tank; 204: Second fan; 205: Third branch; 206: Fourth branch; 207: Third throttle valve; 208: Fourth throttle valve; 209: Second condenser; 210: Second compressor; 211: Second auxiliary circuit; 212: Second control valve; 213: Second liquid storage tank; 300: Control device for cold storage; 301: Processor; 302: Memory; 303: Communication interface; 304: Bus. DETAILED DESCRIPTION

[0026] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0027] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0028] Unless otherwise stated, the term "plurality" means two or more.

[0029] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0030] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0031] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0032] Currently, cold storage is used to store some refrigerated goods. There are generally two common types of cold storage on the market: one for medium- and long-term storage, and the other for temporary storage in transit. The former typically uses an air-cooled finned evaporator as part of the refrigeration system and is installed inside the cold storage. Its refrigeration unit operates in a normally powered mode. When the refrigeration system is operating, a fan is used to move the air inside the storage through the evaporator for heat exchange, thereby lowering the temperature inside the storage. The latter, on the other hand, has a built-in cold storage water tank. The evaporator, as part of the refrigeration system, is installed inside the cold storage water tank. It first cools the cold storage liquid to store cold energy, and then uses natural convection to cool the air inside the storage tank, thereby lowering the temperature inside the storage tank.

[0033] However, the first type of cold storage quickly recovers temperature after a power outage, making it difficult to use in areas with unstable power supply or when storing valuable goods. Unless an additional power generation system is installed, there is a risk of damage to the goods. The second type of cold storage has a slower cooling rate, making it difficult to reduce the temperature to the optimal storage temperature within a limited time, especially in the summer when large quantities of goods are stored simultaneously. Therefore, a cold storage solution that can achieve both rapid cooling and cold storage is urgently needed.

[0034] Combine Figure 1-3 As shown, an embodiment of the present disclosure provides a cold storage, including: a first refrigeration system 100 and a second refrigeration system 200. The first refrigeration system 100 includes a first evaporator 101, a second evaporator 102, a first cold storage water tank 103, and a first fan 104. The first evaporator 101 is installed inside the first cold storage water tank 103, and the second evaporator 102 is installed opposite to the first fan 104. The second refrigeration system 200 includes a third evaporator 201, a fourth evaporator 202, a second cold storage water tank 203, and a second fan 204. The third evaporator 201 is installed inside the second cold storage water tank 203, and the fourth evaporator 202 is installed opposite to the second fan 204.

[0035] The cold storage provided by the embodiments of the present disclosure is equipped with two refrigeration systems, each of which is equipped with both an air-cooled evaporator and a water-cooled evaporator. Multiple evaporators can be used individually or in combination to provide cooling, effectively reducing the temperature within the storage. By precisely controlling the operation of the first refrigeration system 100 and the second refrigeration system 200, the embodiments of the present disclosure can quickly reduce the temperature within the storage during the initial storage period and maintain the temperature within the storage period through cold storage in the later stages, thereby facilitating energy conservation.

[0036] Optionally, the first evaporator 101 is provided on the first branch 105, the second evaporator 102 is provided on the second branch 106, and the first branch 105 and the second branch 106 are provided in parallel. The third evaporator 201 is provided on the third branch 205, and the fourth evaporator 202 is provided on the fourth branch 206, and the third branch 205 and the fourth branch 206 are provided in parallel. In this way, the embodiment of the present disclosure can control the first evaporator 101, the second evaporator 102, the third evaporator 201, and the fourth evaporator 202 to cool individually or in combination to reasonably reduce the temperature within the storage chamber.

[0037] Optionally, the first branch 105 is provided with a first throttle valve 107, and the second branch 106 is provided with a second throttle valve 108. The third branch 205 is provided with a third throttle valve 207, and the fourth branch 206 is provided with a fourth throttle valve 208. Thus, by adjusting the opening and closing states of each throttle valve, the embodiment of the present disclosure can control the conduction or disconnection of the corresponding branch, thereby achieving individual or combined cooling of multiple evaporators, which is conducive to reasonably reducing the temperature inside the storage.

[0038] Optionally, the first refrigeration system 100 further includes a first condenser 109 and a first compressor 110. Thus, the first compressor 110, the first condenser 109, the first evaporator 101 and the second evaporator 102 form a refrigerant circulation loop, thereby continuously lowering the temperature inside the refrigerator through refrigeration operation.

[0039] Optionally, the second refrigeration system 200 further includes a second condenser 209 and a second compressor 210. Thus, the second compressor 210, the second condenser 209, the third evaporator 201 and the fourth evaporator 202 form a refrigerant circulation loop, thereby continuously reducing the temperature inside the refrigerator through refrigeration operation.

[0040] Optionally, the first refrigeration system 100 also includes a first auxiliary circuit 111. One end of the first auxiliary circuit 111 is connected to the exhaust pipe of the first compressor 110, and the other end is connected to the pipe between the second evaporator 102 and the second throttle valve 108. The first auxiliary circuit 111 is provided with a first control valve 112. In this way, when the temperature in the warehouse is low and there is a demand for heating, the embodiment of the present disclosure can open the first control valve 112 to conduct the first auxiliary circuit 111. At the same time, the first throttle valve 107 and the second throttle valve 108 are closed to form a refrigerant circulation loop of the first compressor 110, the first control valve 112, and the second evaporator 102. At this time, the second evaporator 102 works as a condenser and uses the first fan 104 to perform heat exchange with the air in the warehouse, so as to achieve the purpose of raising the temperature in the warehouse.

[0041] Optionally, the first refrigeration system 100 further includes a first liquid storage tank 113. The first liquid storage tank 113 is located in the suction line of the first compressor 110. Thus, when the first refrigeration system 100 operates in the aforementioned heating mode, the gaseous refrigerant passes through the second evaporator 102, functioning as a condenser, and is converted into liquid refrigerant, which then enters the first liquid storage tank 113. Thus, the disclosed embodiment prevents liquid refrigerant from directly entering the first compressor 110 and causing liquid hammer, thereby improving the reliability of the first refrigeration system 100.

[0042] Optionally, a first heating device is provided in the first liquid storage tank 113. The first heating device is configured to heat the liquid refrigerant in the first liquid storage tank 113. Thus, by controlling the operation of the first heating device, the liquid refrigerant in the first liquid storage tank 113 can be converted into gaseous refrigerant, thereby enabling the gas replenishment operation of the first compressor 110.

[0043] Optionally, the second refrigeration system 200 also includes a second auxiliary circuit 211. One end of the second auxiliary circuit 211 is connected to the exhaust pipe of the second compressor 210, and the other end is connected to the pipe between the fourth evaporator 202 and the fourth throttle valve 208. The second auxiliary circuit 211 is provided with a second control valve 212. In this way, when the temperature in the warehouse is low and there is a demand for heating, the embodiment of the present disclosure can open the second control valve 212 to conduct the second auxiliary circuit 211. At the same time, the third throttle valve 207 and the fourth throttle valve 208 are closed to form a refrigerant circulation loop of the second compressor 210, the second control valve 212, and the fourth evaporator 202. At this time, the fourth evaporator 202 works as a condenser and uses the second fan 204 to exchange heat with the air in the warehouse, so as to achieve the purpose of raising the temperature in the warehouse.

[0044] Optionally, the second refrigeration system 200 further includes a second liquid storage tank 213. The second liquid storage tank 213 is disposed in the suction line of the second compressor 210. Thus, when the second refrigeration system 200 operates in the aforementioned heating mode, the gaseous refrigerant passes through the fourth evaporator 202, functioning as a condenser, and is converted into liquid refrigerant, which then enters the second liquid storage tank 213. Thus, the disclosed embodiment prevents liquid refrigerant from directly entering the second compressor 210 and causing liquid hammer, thereby improving the reliability of the second refrigeration system 200.

[0045] Optionally, a second heating device is provided in the second liquid storage tank 213. The second heating device is configured to heat the liquid refrigerant in the second liquid storage tank 213. Thus, by controlling the operation of the second heating device, the liquid refrigerant in the second liquid storage tank 213 can be converted into gaseous refrigerant, thereby enabling the gas replenishment operation of the second compressor 210.

[0046] Optionally, the first throttle valve 107, the second throttle valve 108, the third throttle valve 207, and the fourth throttle valve 208 are electronic expansion valves. Thus, by controlling the opening of each electronic expansion valve, the disclosed embodiment can control the opening or closing of the corresponding branch circuit and accurately control the refrigerant flow rate on the corresponding branch circuit, thereby facilitating more reasonable regulation of the temperature within the storage chamber.

[0047] Optionally, the first control valve 112 and the second control valve 212 are solenoid valves. In this way, by controlling the opening and closing states of the solenoid valves, the embodiment of the present disclosure can control the corresponding pipelines to be connected or disconnected, thereby switching the operating mode of each refrigeration system, which is conducive to more reasonable control of the temperature in the refrigerator.

[0048] Optionally, the first evaporator 101 and the third evaporator 201 are copper tube evaporators. Thus, the evaporators are installed inside the cold storage tank, first cooling the cold storage liquid to store cold energy, and then using natural convection to cool the air inside the tank, thereby achieving the purpose of lowering the temperature inside the tank.

[0049] Optionally, the second evaporator 102 and the fourth evaporator 202 are finned evaporators. In this way, the evaporators are installed relative to the fan, and under the action of the fan, the air in the storage flows through the evaporators to complete heat exchange, thereby achieving the purpose of reducing the temperature in the storage.

[0050] Optionally, the cold storage further includes a humidifying device. Thus, when the humidity in the cold storage is low, by operating the humidifying device, the embodiment of the present disclosure can reasonably increase the humidity in the cold storage to facilitate the storage of goods.

[0051] Optionally, the cold storage also includes an ambient temperature sensor. The ambient temperature sensor is located within the cold storage and is configured to detect the cold storage ambient temperature. Thus, the disclosed embodiments can control the operation of the refrigeration system by detecting the cold storage ambient temperature, facilitating more reasonable temperature regulation within the cold storage.

[0052] Optionally, the cold storage further includes a first cold storage temperature sensor and a second cold storage temperature sensor. The first cold storage temperature sensor is located within the first cold storage water tank 103 and is configured to obtain a first cold storage temperature. The second cold storage temperature sensor is located within the second cold storage water tank 203 and is configured to obtain a second cold storage temperature. In this way, the disclosed embodiments can control the operation of the refrigeration system by detecting the cold storage temperature of each cold storage water tank, thereby balancing the cold storage capacity of the two cold storage water tanks, thereby facilitating temperature uniformity within the storage.

[0053] Optionally, the cold storage also includes an ambient humidity sensor. The ambient humidity sensor is located within the cold storage and is configured to detect the ambient humidity of the cold storage. In this way, the disclosed embodiments can control the operation of the refrigeration system by detecting the ambient humidity of the cold storage, facilitating more rational regulation of humidity within the cold storage.

[0054] Optionally, the cold storage further includes a control device 300 for the cold storage. The control device 300 for the cold storage is electrically connected to the first refrigeration system 100 and the second refrigeration system 200. Thus, the disclosed embodiments can execute corresponding control methods through the device to more accurately control the operation of the first and second refrigeration systems.

[0055] Based on the above cold storage, combined with Figure 4 As shown, the embodiment of the present disclosure provides a control method for a cold storage, comprising:

[0056] S401: The processor obtains the cold storage ambient temperature.

[0057] S402: The processor controls the operation of the first refrigeration system and the second refrigeration system according to the temperature difference between the cold storage ambient temperature and the cold storage target temperature.

[0058] Using the control method for a cold storage provided by the embodiment of the present disclosure, the cold storage is provided with two refrigeration systems, and each refrigeration system is configured with an air-cooled evaporator and a water-cooled evaporator. Multiple evaporators can be cooled individually or in combination to reasonably reduce the temperature inside the storage. By detecting the ambient temperature of the cold storage and calculating the temperature difference between it and the target temperature of the cold storage, the embodiment of the present disclosure can determine the heat load in the storage. Furthermore, based on the heat load, by controlling the precise operation of the first refrigeration system and the second refrigeration system, the embodiment of the present disclosure can quickly reduce the temperature in the storage at the beginning of storage, and maintain the low temperature in the storage by storing cold in the later stage of storage, thus helping to save energy.

[0059] Optionally, the processor controls the operation of the first refrigeration system and the second refrigeration system according to the temperature difference between the cold storage environment temperature and the cold storage target temperature, including: when the temperature difference between the cold storage environment temperature and the cold storage target temperature is greater than a preset temperature difference, the processor controls the first refrigeration system to operate in a rapid cooling mode, and controls the second refrigeration system to operate in a rapid cooling mode; or, when the temperature difference between the cold storage environment temperature and the cold storage target temperature is less than or equal to a preset temperature difference, the processor controls the operation of the first refrigeration system and the second refrigeration system according to the first cold storage temperature and the second cold storage temperature. In this way, when the temperature inside the storehouse is high, the temperature difference between the detected cold storage environment temperature and the set cold storage target temperature is greater than the preset temperature difference, and the heat load inside the storehouse is large. By controlling the first refrigeration system and the second refrigeration system to operate in a rapid cooling mode at the same time, the disclosed embodiment can increase the cooling capacity of the entire refrigeration system, thereby facilitating a rapid reduction in the temperature inside the storehouse in the early stages of storage. When the temperature difference between the detected cold storage environment temperature and the set cold storage target temperature is less than or equal to the preset temperature difference, the temperature inside the storehouse is normal and the heat load inside the storehouse is small. At this time, the embodiment of the present disclosure can further control the operation of the first refrigeration system and the second refrigeration system according to the first cold storage temperature and the second cold storage temperature, so that the cold storage liquid in the cold storage tank can be stored cold while ensuring the low temperature in the warehouse.

[0060] Optionally, the processor controls the operation of the first and second refrigeration systems based on a first cold storage temperature and a second cold storage temperature, including: when the first cold storage temperature is less than or equal to a temperature threshold and the second cold storage temperature is less than or equal to the temperature threshold, the processor controls the first refrigeration system to operate in a cold storage cooling mode and controls the second refrigeration system to operate in a cold storage cooling mode; or, when the first cold storage temperature is greater than the temperature threshold or the second cold storage temperature is greater than the temperature threshold, the processor controls the operation of the first and second refrigeration systems based on a comparison result of the first and second cold storage temperatures. The first cold storage temperature is the detected temperature of the cold storage liquid in the first cold storage tank, and the second cold storage temperature is the detected temperature of the cold storage liquid in the second cold storage tank. Thus, when the first cold storage temperature is less than or equal to the temperature threshold and the second cold storage temperature is less than or equal to the temperature threshold, it indicates that both cold storage tanks have completed cold storage and the cold storage liquid in the cold storage tanks has stored sufficient cold. By controlling the first and second refrigeration systems to operate in cold storage cooling modes simultaneously, the disclosed embodiments can utilize the cold stored in the cold storage liquid to maintain a low temperature in the storage tank during the later stages of storage, thereby saving energy. If the first or second cold storage temperature exceeds the temperature threshold, it indicates that one of the cold storage tanks has not yet completed cold storage. In this case, the disclosed embodiment can further control the operation of the first and second refrigeration systems based on the comparison result of the first and second cold storage temperatures to balance the cold storage capacity in the two cold storage tanks, thereby ensuring temperature uniformity within the storage tank.

[0061] Optionally, the processor controls the operation of the first and second refrigeration systems based on a comparison result between the first and second cold storage temperatures, including: when the first cold storage temperature is greater than or equal to the second cold storage temperature, the processor controls the first refrigeration system to operate in a cold storage cooling mode and controls the second refrigeration system to operate in a rapid cooling mode; or, when the first cold storage temperature is less than the second cold storage temperature, the processor controls the first refrigeration system to operate in a rapid cooling mode and controls the second refrigeration system to operate in a cold storage cooling mode. Thus, when the first cold storage temperature is greater than or equal to the second cold storage temperature, it indicates that the cold storage capacity of the first cold storage tank is less than that of the second cold storage tank. By controlling the first refrigeration system to operate in the cold storage cooling mode, the disclosed embodiment can store cold liquid in the first cold storage tank to increase its cold storage capacity, thereby facilitating temperature uniformity within the storage tank. Simultaneously, by controlling the second refrigeration system to operate in a rapid cooling mode, the disclosed embodiment can compensate for the slow cooling rate caused by insufficient cold storage capacity of the first refrigeration system, thereby enabling rapid regulation of the temperature within the storage tank and facilitating temperature stability within the storage tank. Conversely, when the first cold storage temperature is lower than the second cold storage temperature, the second cold storage tank's cold storage capacity is lower than that of the first. By controlling the second refrigeration system to operate in cold storage cooling mode, the disclosed embodiment can store cold liquid in the second cold storage tank to increase its cold storage capacity, thereby facilitating temperature uniformity within the storage tank. Simultaneously, by controlling the first refrigeration system to operate in rapid cooling mode, the disclosed embodiment can compensate for the slower cooling rate caused by the second refrigeration system's insufficient cold storage capacity, thereby enabling rapid regulation of the storage tank's temperature and ensuring temperature stability within the storage tank.

[0062] Based on the above cold storage, combined with Figure 5 As shown, the embodiment of the present disclosure provides another control method for a cold storage, including:

[0063] S501: The processor obtains the cold storage ambient temperature.

[0064] S502, the processor determines whether the temperature difference between the cold storage ambient temperature and the cold storage target temperature is greater than a preset temperature difference; if so, step S503 is executed; if not, step S504 is executed.

[0065] S503: The processor controls the first refrigeration system to operate in a rapid refrigeration mode, and controls the second refrigeration system to operate in a rapid refrigeration mode.

[0066] S504, the processor determines whether the first cold storage temperature is less than or equal to the temperature threshold and the second cold storage temperature is less than or equal to the temperature threshold; if so, execute step S505; if not, execute step S506.

[0067] S505: The processor controls the first refrigeration system to operate in a cold storage refrigeration mode, and controls the second refrigeration system to operate in a cold storage refrigeration mode.

[0068] S506, the processor determines whether the first cold storage temperature is greater than or equal to the second cold storage temperature; if so, execute step S507; if not, execute step S508.

[0069] S507: The processor controls the first refrigeration system to operate in a cold storage refrigeration mode, and controls the second refrigeration system to operate in a rapid refrigeration mode.

[0070] S508: The processor controls the first refrigeration system to operate in a rapid refrigeration mode, and controls the second refrigeration system to operate in a cold storage refrigeration mode.

[0071] Using the control method for a cold storage system provided by the disclosed embodiment, the cold storage is equipped with two refrigeration systems, each equipped with both an air-cooled evaporator and a water-cooled evaporator. The multiple evaporators can operate individually or in combination to effectively reduce the temperature within the cold storage. By detecting the cold storage ambient temperature and calculating the temperature difference between it and the cold storage target temperature, the disclosed embodiment can determine the heat load within the cold storage system. Furthermore, by precisely controlling the operation of the first and second refrigeration systems, the disclosed embodiment can increase the overall cooling capacity of the refrigeration system during the initial storage period when the heat load within the cold storage system is high, thereby rapidly reducing the temperature within the cold storage system. When the heat load within the cold storage system is lower during the later stages of storage, the disclosed embodiment can utilize the cold storage capacity of the cold storage liquid to maintain a low temperature within the cold storage system, thereby saving energy. Furthermore, while maintaining a low temperature within the cold storage system, the disclosed embodiment can also store cold storage liquid within the cold storage water tank. By balancing the cold storage capacity within the two cold storage water tanks, the temperature uniformity within the cold storage system can be further ensured. In addition, since the first refrigeration system and the second refrigeration system work alternately, the embodiment of the present disclosure can also avoid the problem of evaporator frosting caused by a single refrigeration system working for a long time.

[0072] Optionally, the processor controls the first refrigeration system to operate in a cold storage refrigeration mode, including: the processor controls the first branch to be turned on, and controls the second branch to be turned off. Thus, when the first refrigeration system operates in a cold storage refrigeration mode, the disclosed embodiment turns on the first branch to control the operation of the first evaporator. Simultaneously, the second branch is turned off to control the second evaporator to be non-operating. At this time, the first refrigeration system stores cold water in the first cold storage tank through the first evaporator, and the air in the tank exchanges heat with the cold storage liquid through natural convection, thereby achieving the purpose of lowering the temperature in the tank.

[0073] Optionally, the processor controls the first refrigeration system to operate in a rapid cooling mode, including: the processor controls the first branch to disconnect and the second branch to connect. Thus, when the first refrigeration system operates in rapid cooling mode, the disclosed embodiment connects the second branch to control the operation of the second evaporator. Simultaneously, the first branch is disconnected to control the inactivity of the first evaporator. At this point, under the action of the first fan, the first refrigeration system exchanges heat with the air inside the storage compartment through the second evaporator, thereby reducing the temperature inside the storage compartment.

[0074] Optionally, the processor controls the second refrigeration system to operate in a cold storage cooling mode, including: the processor controls the third branch to be turned on, and controls the fourth branch to be turned off. Thus, when the second refrigeration system operates in a cold storage cooling mode, the disclosed embodiment turns on the third branch to control the operation of the third evaporator. Simultaneously, the fourth branch is turned off to control the fourth evaporator to be turned off. At this time, the second refrigeration system uses the third evaporator to store cold water in the second cold storage tank. The air in the tank exchanges heat with the cold storage liquid through natural convection, thereby reducing the temperature in the tank.

[0075] Optionally, the processor controls the second refrigeration system to operate in rapid cooling mode, including: the processor controls the third branch to be disconnected and the fourth branch to be connected. Thus, when the second refrigeration system operates in rapid cooling mode, the disclosed embodiment connects the fourth branch to control the operation of the fourth evaporator. Simultaneously, the third branch is disconnected to control the inactivity of the third evaporator. At this point, under the action of the second fan, the second refrigeration system exchanges heat with the air inside the storage compartment through the fourth evaporator, thereby reducing the temperature inside the storage compartment.

[0076] Optionally, the preset temperature difference can be set according to the cold storage configuration information or the stored goods information. If the cold storage area is large, the embodiment of the present disclosure can set a slightly larger preset temperature difference to store cold liquid in the cold storage tank earlier. If there are a lot of goods, the embodiment of the present disclosure can set a slightly smaller preset temperature difference to ensure that most of the goods can quickly enter the low-temperature storage environment. Preferably, the preset temperature difference is 1°C. The preset temperature difference can also be adjusted according to the actual needs of the user, and can also be set to any other value such as 0.5°C or 2°C.

[0077] Optionally, the temperature threshold can be set based on the properties of the cold storage fluid. Specifically, if the cold storage fluid is water, the disclosed embodiment may use the freezing point of water as the temperature threshold, i.e., the temperature threshold is 0°C. The temperature threshold can also be adjusted based on the ambient temperature within the storage chamber or the duration of the power-off insulation, and can also be set to any other value, such as -0.5°C or 0.5°C.

[0078] Based on the above cold storage, combined with Figure 6 As shown, the embodiment of the present disclosure provides another control method for a cold storage, including:

[0079] S601: The processor obtains the cold storage ambient temperature.

[0080] S602: The processor controls the operation of the first refrigeration system and the second refrigeration system according to the temperature difference between the cold storage ambient temperature and the cold storage target temperature.

[0081] S603: When the ambient temperature of the cold storage is less than or equal to a preset temperature, the processor controls the first refrigeration system and / or the second refrigeration system to operate in a heating mode.

[0082] Using the control method for a cold storage provided by the embodiment of the present disclosure, the cold storage is provided with two refrigeration systems, and each refrigeration system is configured with an air-cooled evaporator and a water-cooled evaporator. Multiple evaporators can be refrigerated individually or in combination to reasonably reduce the temperature inside the storage. By detecting the ambient temperature of the cold storage and calculating the temperature difference between it and the target temperature of the cold storage, the embodiment of the present disclosure can determine the heat load in the storage. Furthermore, based on the heat load, by controlling the precise operation of the first refrigeration system and the second refrigeration system, the embodiment of the present disclosure can quickly reduce the temperature inside the storage at the beginning of storage, and maintain the low temperature inside the storage by storing cold in the later stage of storage, which is conducive to saving energy. In addition, when it is detected that the ambient temperature of the cold storage is lower than the preset temperature, it indicates that the current storage temperature of the cold storage is low, which is not conducive to the storage of goods. Therefore, the embodiment of the present disclosure controls the first refrigeration system and / or the second refrigeration system to operate in heating mode to appropriately increase the temperature inside the storage, which is conducive to creating a more suitable storage temperature.

[0083] Optionally, the processor controls the first refrigeration system to operate in a heating mode, including: the processor controls the first auxiliary circuit to be conductive, and controls the first branch circuit to be disconnected from the second branch circuit. Thus, when the first refrigeration system operates in heating mode, the disclosed embodiment connects the first auxiliary circuit and disconnects the first branch circuit and the second branch circuit, thereby controlling the second evaporator to operate as a condenser. In this case, under the action of the first fan, the first refrigeration system exchanges heat with the air inside the storage compartment through the second evaporator, thereby increasing the temperature inside the storage compartment.

[0084] Optionally, the processor controls the second refrigeration system to operate in heating mode, including: the processor controls the second auxiliary circuit to be conductive, and controls the third and fourth branches to be disconnected. Thus, when the second refrigeration system operates in heating mode, the disclosed embodiment connects the second auxiliary circuit and disconnects the third and fourth branches, thereby controlling the fourth evaporator to operate as a condenser. At this time, under the action of the second fan, the second refrigeration system exchanges heat with the air inside the storage compartment through the fourth evaporator, thereby increasing the temperature inside the storage compartment.

[0085] Optionally, the preset temperature can be set based on the stored goods information. If the goods are not suitable for long-term storage in a low-temperature environment, the disclosed embodiment can set a slightly higher preset temperature to more promptly regulate the temperature rise in the warehouse. Preferably, the preset temperature is 2°C. The preset temperature can also be adjusted according to the user's actual needs and can be set to any other value, such as 1°C or 3°C.

[0086] Based on the above cold storage, combined with Figure 7 As shown, the embodiment of the present disclosure provides another control method for a cold storage, including:

[0087] S701: The processor obtains the cold storage ambient temperature.

[0088] S702: The processor controls the operation of the first refrigeration system and the second refrigeration system according to the temperature difference between the cold storage ambient temperature and the cold storage target temperature.

[0089] S703: The processor obtains the humidity of the cold storage environment.

[0090] S704: The processor adjusts the operation of the first refrigeration system and the second refrigeration system according to the humidity of the cold storage environment.

[0091] Using the control method for a cold storage provided by the embodiment of the present disclosure, the cold storage is provided with two refrigeration systems, and each refrigeration system is configured with an air-cooled evaporator and a water-cooled evaporator. Multiple evaporators can be refrigerated individually or in combination to reasonably reduce the temperature inside the storage. By detecting the ambient temperature of the cold storage and calculating the temperature difference between it and the target temperature of the cold storage, the embodiment of the present disclosure can determine the heat load in the storage. Furthermore, based on the heat load, by controlling the precise operation of the first refrigeration system and the second refrigeration system, the embodiment of the present disclosure can quickly reduce the temperature in the storage at the beginning of storage, and maintain the low temperature in the storage by storing cold in the later stage of storage, thus helping to save energy. At the same time, the embodiment of the present disclosure continuously detects the humidity of the cold storage environment, and adjusts the operation of the first refrigeration system and the second refrigeration system in time when the humidity of the cold storage environment is not suitable, so as to reasonably improve the humidity conditions in the storage, which is conducive to creating a more suitable storage environment.

[0092] Optionally, the processor adjusts the operation of the first refrigeration system and the second refrigeration system according to the humidity of the cold storage environment, including: when the humidity of the cold storage environment is greater than the first preset humidity, the processor controls the second branch to be turned on, and / or controls the fourth branch to be turned on. In this way, when the humidity of the cold storage environment is greater than the first preset humidity, it indicates that the current humidity in the warehouse is too high, which may be unfavorable for the long-term storage of certain goods. At this time, the embodiment of the present disclosure controls the first refrigeration system to turn on the second branch, and / or controls the second refrigeration system to turn on the fourth branch, so that the second evaporator and / or the fourth evaporator can participate in the refrigeration operation. Under the action of the fan, the above-mentioned evaporator exchanges heat with the air in the warehouse to reduce the temperature in the warehouse. At the same time, as the refrigeration mode continues to operate, the coil temperature of the above-mentioned evaporator will be lower than the dew point temperature, and the nearby moisture will gradually adhere to the evaporator and form condensation. Therefore, the embodiment of the present disclosure can further achieve the purpose of reducing the humidity in the warehouse.

[0093] Optionally, the cold storage control method further includes: when the cold storage ambient humidity is less than a second preset humidity, the processor controls the humidifier to activate operation. The second preset humidity is lower than the first preset humidity. Thus, when the cold storage ambient humidity is less than the second preset humidity, it indicates that the humidity within the cold storage is currently low, which may be unsuitable for long-term storage of certain goods. In this case, the disclosed embodiment controls the humidifier to activate operation, thereby increasing the humidity within the cold storage to create a more suitable storage environment.

[0094] Optionally, the first and second preset humidity levels can be set based on the stored cargo information. The second preset humidity level is lower than the first preset humidity level. Preferably, the first preset humidity level is 60% and the second preset humidity level is 40%. The first and second preset humidity levels can also be adjusted to any other desired values ​​based on actual user needs.

[0095] Combine Figure 8 As shown, an embodiment of the present disclosure provides a control device 300 for a cold storage, including a processor 301 and a memory 302. Optionally, the device may further include a communication interface 303 and a bus 304. The processor 301, the communication interface 303, and the memory 302 may communicate with each other via the bus 304. The communication interface 303 may be used for information transmission. The processor 301 may call the logic instructions in the memory 302 to execute the control method for the cold storage of the above embodiment.

[0096] In addition, the logic instructions in the memory 302 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0097] Memory 302, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of the present disclosure. Processor 301 executes the program instructions / modules stored in memory 302 to perform functional applications and data processing, thereby implementing the control method for cold storage in the above-mentioned embodiments.

[0098] The memory 302 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal device. Furthermore, the memory 302 may include high-speed random access memory and non-volatile memory.

[0099] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned control method for a cold storage.

[0100] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0101] The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program code, or a transient storage medium.

[0102] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0103] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0104] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, and can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0105] The flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operations of the systems, methods and computer program products according to the embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical functions. In some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in an order different from that disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A control method for a cold storage, characterized in that: The cold storage is provided with a first refrigeration system and a second refrigeration system, the first refrigeration system including a first evaporator, a second evaporator, a first cold storage water tank and a first fan, the first evaporator is installed inside the first cold storage water tank, and the second evaporator is installed relative to the first fan, the second refrigeration system including a third evaporator, a fourth evaporator, a second cold storage water tank and a second fan, the third evaporator is installed inside the second cold storage water tank, and the fourth evaporator is installed relative to the second fan; the method includes: Get the cold storage ambient temperature; When the temperature difference between the cold storage ambient temperature and the cold storage target temperature is greater than the preset temperature difference, the first refrigeration system is controlled to operate in a fast refrigeration mode, and the second refrigeration system is controlled to operate in a fast refrigeration mode; or When the temperature difference between the cold storage ambient temperature and the cold storage target temperature is less than or equal to the preset temperature difference, the first cold storage temperature is less than or equal to the temperature threshold, and the second cold storage temperature is less than or equal to the temperature threshold, the first refrigeration system is controlled to operate in the cold storage refrigeration mode, and the second refrigeration system is controlled to operate in the cold storage refrigeration mode; or When the temperature difference between the cold storage ambient temperature and the cold storage target temperature is less than or equal to the preset temperature difference, the first cold storage temperature is greater than the temperature threshold or the second cold storage temperature is greater than the temperature threshold, and the first cold storage temperature is greater than or equal to the second cold storage temperature, the first refrigeration system is controlled to operate in the cold storage refrigeration mode, and the second refrigeration system is controlled to operate in the fast refrigeration mode; or When the temperature difference between the cold storage ambient temperature and the cold storage target temperature is less than or equal to the preset temperature difference, the first cold storage temperature is greater than the temperature threshold or the second cold storage temperature is greater than the temperature threshold, and the first cold storage temperature is less than the second cold storage temperature, the first refrigeration system is controlled to operate in the fast cooling mode, and the second refrigeration system is controlled to operate in the cold storage cooling mode.

2. The control method according to claim 1, characterized in that: The first evaporator is provided on the first branch, the second evaporator is provided on the second branch, the first branch and the second branch are provided in parallel, the third evaporator is provided on the third branch, the fourth evaporator is provided on the fourth branch, the third branch and the fourth branch are provided in parallel; The controlling the first refrigeration system to operate in the cold storage refrigeration mode includes: controlling the first branch to be turned on, and controlling the second branch to be turned off; The controlling the first refrigeration system to operate in a rapid refrigeration mode includes: controlling the first branch to be disconnected, and controlling the second branch to be connected; The controlling the second refrigeration system to operate in the cold storage refrigeration mode includes: controlling the third branch to be turned on, and controlling the fourth branch to be turned off; The controlling the second refrigeration system to operate in the rapid refrigeration mode includes: controlling the third branch to be disconnected, and controlling the fourth branch to be connected.

3. The control method according to claim 1 or 2, characterized in that: The method further comprises: When the ambient temperature of the cold storage is less than or equal to a preset temperature, the first refrigeration system and / or the second refrigeration system is controlled to operate in a heating mode.

4. The control method according to claim 1 or 2, characterized in that: The method further comprises: Get the humidity of the cold storage environment; Adjust the operation of the first refrigeration system and the second refrigeration system according to the humidity of the cold storage environment.

5. A control device for a cold storage, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the control method for a cold storage according to any one of claims 1 to 4 when running the program instructions.

6. A cold storage, characterized in that: include: A first refrigeration system includes a first evaporator, a second evaporator, a first cold storage water tank, and a first fan, wherein the first evaporator is installed inside the first cold storage water tank, the second evaporator is installed opposite to the first fan, the first evaporator is arranged on a first branch, the second evaporator is arranged on a second branch, and the first branch and the second branch are arranged in parallel; a second refrigeration system comprising a third evaporator, a fourth evaporator, a second cold storage water tank, and a second fan, wherein the third evaporator is installed inside the second cold storage water tank, the fourth evaporator is installed opposite to the second fan, the third evaporator is arranged on a third branch, the fourth evaporator is arranged on a fourth branch, and the third branch and the fourth branch are arranged in parallel; and The control device for a cold storage according to claim 5 is electrically connected to the first refrigeration system and the second refrigeration system.

7. A storage medium storing program instructions, characterized in that: When the program instructions are run, the control method for a cold storage according to any one of claims 1 to 4 is executed.

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