Cooling control method and system for dual refrigeration system

Abstract

This application relates to a cooling control method and system for a dual-cooling system. The dual-cooling system includes two cooling units and two compartments. Upon receiving a defrost request from a target cooling unit, the method closes all air outlets and return air vents in the target cooling unit and controls the cooling fan in the target cooling unit to operate at preset time intervals. The target cooling unit is one of the two cooling units. The defrost heater is activated to defrost the target cooling unit. It is determined whether any compartment in the dual-cooling system requires cooling. If so, the air outlet and return air vent of the other cooling unit (excluding the target cooling unit) leading to the compartment requiring cooling are opened, allowing the other cooling unit to cool the compartment. Each of the two cooling units is equipped with an air vent and a damper leading to its respective compartment. This method solves the problem of excessive temperature fluctuations in refrigerator compartments.

Description

Technical Field

[0001] This application relates to the field of refrigerators, and in particular to a method and system for controlling refrigeration in a dual-refrigeration system. Background Technology

[0002] In the cooling process of refrigerators, three main technologies are used: air cooling, direct cooling, or a combination of both. Air cooling uses a fan to directly deliver the cold air generated by the evaporator into the refrigerator, while direct cooling relies on natural airflow to transfer cold air. A combination of both methods is used: direct cooling for the refrigerator compartment and air cooling for the freezer compartment.

[0003] While these three technologies each have their own characteristics, they all face challenges in maintaining a stable internal temperature in a refrigerator. Direct cooling technology, relying on natural convection, results in less precise temperature control. Although air-cooled technology enhances the distribution of cold air through a fan, the fan's inactivity when cooling stops can cause temperature differences in different parts of the refrigerator. Furthermore, regardless of whether it's a direct-cooling or air-cooling refrigerator, the temporary cessation of cold air supply during defrosting can cause the temperature inside the refrigerator compartments to rise, leading to significant temperature fluctuations and affecting the storage of food inside.

[0004] There is currently no effective solution to the problem of excessive temperature fluctuations in refrigerator compartments in related technologies. Summary of the Invention

[0005] This embodiment provides a cooling control method and system for a dual-cooling system to solve the problem of excessive temperature fluctuations in refrigerator compartments in related technologies.

[0006] Firstly, this embodiment provides a cooling control method for a dual-cooling system, the dual-cooling system comprising two cooling units and two compartments, including:

[0007] Upon receiving a defrost request from the target refrigeration unit, all air outlets and return air outlets in the target refrigeration unit are closed, and the refrigeration fan in the target refrigeration unit is controlled to operate at preset time intervals; wherein, the target refrigeration unit is one of two refrigeration units;

[0008] Turn on the defrost heater to defrost the target refrigeration unit;

[0009] Determine if there are any rooms in the dual refrigeration system that need cooling; if so, open the air outlet and return air inlet of the other refrigeration unit (excluding the target refrigeration unit) leading to the room that needs cooling, so that the other refrigeration unit can cool the room that needs cooling; wherein, each of the two refrigeration units is equipped with an air outlet and a damper leading to each room.

[0010] In some embodiments, the defrost heater is turned on to defrost the target refrigeration unit, including:

[0011] The target refrigeration unit is isolated from the corresponding compartment by a thermal insulation structure.

[0012] In some of these embodiments, when the target refrigeration unit is in the defrosting stage and a defrosting request is received from the other refrigeration unit besides the target refrigeration unit, it is determined whether the target refrigeration unit has finished defrosting; if so, the target refrigeration unit is controlled to enter the pre-cooling stage after defrosting.

[0013] After the target refrigeration unit has finished pre-cooling, the other refrigeration unit among the two refrigeration units is controlled to defrost.

[0014] In some of these embodiments, the pre-cooling stage includes:

[0015] Keep all air outlets and return air inlets of the target refrigeration unit closed.

[0016] Start the target cooling unit to cool, and turn on the cooling fan in the target cooling unit until the defrost sensor temperature in the target cooling unit is lower than the preset temperature, wherein the preset temperature is lower than the shutdown point temperature of the compartment corresponding to the target cooling unit. Then open the air damper leading to the compartment that needs to be cooled to cool the compartment.

[0017] In some embodiments, the two refrigeration units include a first refrigeration unit and a second refrigeration unit, and the two compartments include a first compartment and a second compartment, wherein the first refrigeration unit is disposed in the first compartment and the second refrigeration unit is disposed in the second compartment.

[0018] In some embodiments, it is determined whether there is a room in the dual-cooling system that needs cooling; if so, the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room that needs cooling are opened, so that the other cooling unit can cool the room that needs cooling, including:

[0019] When the first refrigeration unit is in the defrosting stage and the first compartment needs cooling, the second refrigeration unit is controlled to cool, and the damper of the second refrigeration unit leading to the first compartment is opened so that the second refrigeration unit can cool the first compartment.

[0020] In some embodiments, it is determined whether there is a room in the dual-cooling system that needs cooling; if so, the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room that needs cooling are opened, so that the other cooling unit can cool the room that needs cooling, including:

[0021] When the first refrigeration unit is in the defrosting stage and both the first and second compartments need to be refrigerated, the second refrigeration unit is controlled to refrigerate. The damper of the second refrigeration unit leading to the first and second compartments is opened so that the second refrigeration unit can refrigerate the first and second compartments.

[0022] In some embodiments, it is determined whether there is a room in the dual-cooling system that needs cooling; if so, the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room that needs cooling are opened, so that the other cooling unit can cool the room that needs cooling, including:

[0023] When the first refrigeration unit is in the defrosting stage and the second compartment needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the damper leading from the second refrigeration unit to the second compartment is opened so that the second refrigeration unit can refrigerate the second compartment.

[0024] Secondly, this embodiment provides a dual-cooling system refrigeration control system, applying the dual-cooling system refrigeration control method described in the first aspect above. The system includes: a first refrigeration unit, a second refrigeration unit, a first compartment, and a second compartment; wherein,

[0025] The first refrigeration unit is equipped with an electric damper leading to the first and second rooms, an air outlet, and a return air outlet, used to refrigerate the rooms according to their refrigeration needs.

[0026] The second refrigeration unit is equipped with an electric damper leading to the first and second compartments, an air outlet, and a return air outlet, used to refrigerate the compartments according to their cooling needs.

[0027] In some embodiments, the system further includes a main control board and a display board, wherein,

[0028] The main control board is used to control the opening and closing of each electric damper and the operation of the refrigeration fan; the display board is used to set and display the control parameters inside the refrigerator.

[0029] Compared with related technologies, the dual-refrigeration system cooling control method provided in this embodiment includes a dual-refrigeration system comprising two refrigeration units and two compartments. Upon receiving a defrost request from a target refrigeration unit, all air outlets and return air vents in the target refrigeration unit are closed, and the refrigeration fan in the target refrigeration unit is controlled to operate at preset time intervals. The target refrigeration unit is one of the two refrigeration units. The defrost heater is turned on to defrost the target refrigeration unit. It is determined whether any compartment in the dual-refrigeration system needs cooling. If so, the air outlets and return air vents of the other refrigeration unit (excluding the target refrigeration unit) leading to the compartment requiring cooling are opened, allowing the other refrigeration unit to cool the compartment. Each of the two refrigeration units is equipped with an air vent and a damper leading to each compartment. This method solves the problem of excessive temperature fluctuations in the refrigerator compartments.

[0030] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a hardware structure block diagram of the terminal of the dual-cooling system cooling control method in this embodiment.

[0033] Figure 2 This is a flowchart of the cooling control method for the dual-cooling system in this embodiment.

[0034] Figure 3 This is a schematic diagram of the dual refrigeration system structure in this embodiment.

[0035] Figure 4 This is a flowchart of the pre-cooling process after the target cooling unit has finished defrosting in this embodiment.

[0036] Figure 5 This is a flowchart of another cooling control method for a dual-cooling system in this embodiment.

[0037] Figure 6 This is a structural block diagram of the dual-cooling system refrigeration control system in this embodiment.

[0038] Figure 7 This is a schematic diagram of the control circuit structure of the dual-cooling system in this embodiment. Detailed Implementation

[0039] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0040] Unless otherwise defined, the technical or scientific terms used in this application shall have the general meaning as understood by one of ordinary skill in the art to which this application pertains. Words such as “a,” “an,” “an,” “the,” “the,” and “these,” used in this application, do not indicate quantitative limitation and may be singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or modules (units) is not limited to the listed steps or modules (units) but may include steps or modules (units) not listed, or may include other steps or modules (units) inherent to such processes, methods, products, or devices. The terms “connected,” “linked,” and “coupled,” used in this application, are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. The term “multiple” used in this application refers to two or more. The "and / or" operator describes the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: A alone, A and B simultaneously, and B alone. Typically, the character " / " indicates that the objects before and after it are in an "or" relationship. The terms "first," "second," and "third," etc., used in this application are merely for distinguishing similar objects and do not represent a specific ordering of the objects.

[0041] The method embodiments provided in this example can be executed on a terminal, computer, or similar computing device. For example, it can run on a terminal. Figure 1 This is a hardware structure block diagram of the terminal of the dual-cooling system cooling control method in this embodiment. For example... Figure 1 As shown, a terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 and a memory 104 for storing data are also included. The processor 102 may be, but is not limited to, a microprocessor (MCU) or a programmable logic device (FPGA). The terminal may also include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that… Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the terminal described above. For example, the terminal may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown are illustrated.

[0042] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the dual-cooling system cooling control method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0043] The transmission device 106 is used to receive or send data via a network. This network includes a wireless network provided by the terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 can be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0044] This embodiment provides a cooling control method for a dual-cooling system. Figure 2 This is a flowchart of the cooling control method for the dual-cooling system in this embodiment, as follows: Figure 2 As shown, the process includes the following steps:

[0045] Step S201: The dual refrigeration system includes two refrigeration units and two compartments. Upon receiving a defrosting request from the target refrigeration unit, all air outlets and return air outlets in the target refrigeration unit are closed, and the refrigeration fan in the target refrigeration unit is controlled to operate at a preset time interval. The target refrigeration unit is one of the two refrigeration units. The defrosting heater is turned on to defrost the target refrigeration unit.

[0046] Specifically, Figure 3 This is a schematic diagram of the dual-cooling system structure in this embodiment, as shown below. Figure 3As shown, the dual-refrigeration system in this embodiment includes two refrigeration units and two compartments. The two refrigeration units are located in two separate and independent compartments. One compartment is a refrigerator compartment, while the other can be located in a refrigerator compartment, a freezer compartment, or a variable temperature compartment. If both are refrigerator compartments, then two refrigeration units are installed in the refrigerator compartment. However, from an energy-saving perspective, the optimal arrangement is to install them in a compartment other than the refrigerator compartment. This allows the refrigeration functions between the compartments to be shared through the installed pipes, and also reduces the need for air duct layout, thereby reducing the space occupied by the air ducts inside the refrigerator. The two compartments are connected to each other through air ducts.

[0047] The first refrigeration unit 311 is located in the first compartment 31 and includes a first evaporator 312, a first defrost heater 313, a first air outlet 314, a second air outlet 315, a first return air outlet 316, a second return air outlet 317, a first air outlet electric damper 3141, a second air outlet electric damper 3151, a first return air outlet electric damper 3161, a second return air outlet electric damper 3171, and a first refrigeration fan 310.

[0048] The second refrigeration unit 321 is located in the second compartment 32 and includes a second evaporator 322, a second defrost heater 323, a third air outlet 324, a fourth air outlet 325, a third return air outlet 326, a fourth return air outlet 327, a third air outlet electric damper 3241, a fourth air outlet electric damper 3251, a third return air outlet electric damper 3261, a fourth return air outlet electric damper 3271, and a second refrigeration fan 320.

[0049] The first air outlet electric damper 3141, the first air outlet 314, the third air outlet 324 and the third air outlet electric damper 3241 are connected in sequence. The first air outlet 314 and the third air outlet 324 are also connected to the air outlet 318 of the first room 31.

[0050] The second air outlet electric damper 3151, the second air outlet 315, the fourth air outlet 325 and the fourth air outlet electric damper 3251 are connected in sequence; the second air outlet 315 and the fourth air outlet 325 are also connected to the air outlet 328 of the second compartment 32.

[0051] The first return air inlet electric damper 3161, the first return air inlet 316, the third return air inlet 326 and the third return air inlet electric damper 3261 are connected in sequence. The first return air inlet 316 and the third return air inlet 326 are also connected to the return air inlet 319 of the first room 31.

[0052] The second return air inlet electric damper 3171, the second return air inlet 317, the fourth return air inlet 327, and the fourth return air inlet electric damper 3271 are connected in sequence. The second return air inlet 317 and the fourth return air inlet 327 are also connected to the return air inlet 329 of the second room 32.

[0053] Taking the first refrigeration unit as an example, when the first refrigeration unit 311 needs to defrost, the first air outlet electric damper 3141, the second air outlet electric damper 3151, the first return air outlet electric damper 3161, and the second return air outlet electric damper 3171 are closed. The first defrost heater 313 is activated to heat and defrost. By closing all the dampers in the first refrigeration unit 311 before defrosting, the heat generated by the first refrigeration unit 311 during defrosting can be prevented from spreading to the first compartment 31 and the second compartment 32, thereby increasing the temperature of the compartments. During this period, the first refrigeration fan 310 in the first refrigeration unit 311 is simultaneously controlled to operate intermittently for short periods, for example, by controlling the first refrigeration fan 310 to operate at 10 seconds per minute, thereby making the temperature on the first evaporator 312 more uniform, shortening the defrosting time, accelerating defrosting, and also allowing the defrosting water on the first evaporator 312 to leave the first evaporator 312 more quickly. When the second refrigeration unit needs to defrost, the same method is used, and will not be described again here.

[0054] Step S202: Determine if there are any rooms in the dual refrigeration system that need cooling; if so, open the air outlet and return air inlet of the other refrigeration unit (excluding the target refrigeration unit) leading to the room that needs cooling, so that the other refrigeration unit can cool the room that needs cooling; wherein, each of the two refrigeration units is equipped with an air outlet and a damper leading to each room.

[0055] Specifically, when the target refrigeration unit (such as the first refrigeration unit 311) in the dual refrigeration system is defrosting, and one or both of the two compartments require cooling, the other refrigeration unit (the second refrigeration unit 321) is activated for cooling. All air outlets and return air inlets of the first refrigeration unit 311 remain closed, specifically the first air outlet electric damper 3141, the second air outlet electric damper 3151, the first return air inlet electric damper 3161, and the second return air inlet electric damper 3171. The dampers of the second refrigeration unit 321 leading to the compartment requiring cooling are opened. For example, if the first compartment 31 requires cooling, the third air outlet electric damper 3241 and the third return air inlet electric damper 3261 are opened, allowing the cold air from the second refrigeration unit 321 to enter the first compartment 31 for cooling. When the second chamber 32 also needs cooling, the fourth air outlet electric damper 3251 and the fourth return air outlet electric damper 3271 are opened to allow the cold air in the second cooling unit 321 to enter the second chamber 32 for cooling.

[0056] Through the above steps S201 to S202, the dual-cooling system includes two cooling units and two compartments. Upon receiving a defrost request from the target cooling unit, all air outlets and return air vents in the target cooling unit are closed, and the cooling fan in the target cooling unit is controlled to operate at preset time intervals. The target cooling unit is one of the two cooling units. The defrost heater is turned on to defrost the target cooling unit. It is determined whether there is a compartment in the dual-cooling system that needs cooling. If so, the air outlet and return air vent of the other cooling unit (excluding the target cooling unit) leading to the compartment that needs cooling are opened, so that the other cooling unit can cool the compartment that needs cooling. Each of the two cooling units is equipped with an air outlet and a damper leading to each compartment. Compared to existing technologies that rely solely on air cooling and direct cooling for refrigerator operation, this application closes all air outlets and return air vents of the refrigeration unit when it begins defrosting, and activates the refrigeration fan within that unit. This accelerates defrosting while preventing the heat generated during defrosting from spreading to the compartments, thus avoiding excessive temperature fluctuations in the refrigerator compartments caused by prolonged defrosting. Furthermore, when one refrigeration unit is in the defrosting stage, cold air is delivered to the corresponding compartment through an independent air duct by another refrigeration unit. This solves the problem of excessive temperature fluctuations in the refrigerator compartment caused by the inability of the refrigeration unit in that compartment to cool due to defrosting.

[0057] In some embodiments, the defrost heater is turned on to defrost the target refrigeration unit, including:

[0058] The target refrigeration unit is isolated from the corresponding compartment by a thermal insulation structure.

[0059] Specifically, in this embodiment of the dual-cooling system, a heat insulation structure is also provided in both the cooling unit and the compartment. During the defrosting stage of the cooling unit, the heat insulation layer prevents the heat generated by the cooling unit during defrosting from being transferred to the compartment, further reducing the temperature rise in the compartment. For example, Figure 3 As shown, a first heat insulation layer 33 is provided between the first refrigeration unit 311 and the first compartment 31. The first heat insulation layer 33 is used to prevent the heat generated by the first refrigeration unit 311 during defrosting from being transferred to the first compartment 31. A second heat insulation layer 34 is provided between the second refrigeration unit 321 and the second compartment 32. The second heat insulation layer 34 is used to prevent the heat generated by the second refrigeration unit 321 during defrosting from being transferred to the second compartment 32.

[0060] In another embodiment, when the target refrigeration unit is in the defrosting stage and a defrosting request is received from the other refrigeration unit among the two refrigeration units, it is determined whether the target refrigeration unit has finished defrosting; if so, the target refrigeration unit is controlled to enter the pre-cooling stage after defrosting.

[0061] After the target refrigeration unit has finished pre-cooling, the other refrigeration unit among the two refrigeration units is controlled to defrost.

[0062] Specifically, when one of the two refrigeration units (defined as the target refrigeration unit in this embodiment) is in the defrosting stage, and the other refrigeration unit also meets the defrosting conditions and needs to be defrosted, in order to ensure that there is a refrigeration unit available to cool down any room that needs cooling during this period, the other refrigeration unit is not defrosted first. Defrosting of the other refrigeration unit only begins after the target refrigeration unit has finished defrosting. Specifically, after the target refrigeration unit finishes defrosting, pre-cooling is initiated, and defrosting of the other refrigeration unit only begins after the target refrigeration unit has finished pre-cooling.

[0063] In another embodiment... Figure 4 This is a flowchart of the pre-cooling process after the target cooling unit has defrosted in this embodiment, as shown below. Figure 4 As shown, the pre-cooling process includes the following steps:

[0064] Step S401: Control all air outlets and return air inlets of the target refrigeration unit to remain closed;

[0065] Specifically, after the target cooling unit has finished defrosting, all air outlets and return air inlets of the target cooling unit should remain closed to prevent residual heat from defrosting from spreading into the compartment and causing the compartment temperature to rise.

[0066] Step S402: Start the target cooling unit to cool down and turn on the cooling fan in the target cooling unit until the defrost sensor temperature in the target cooling unit is lower than the preset temperature.

[0067] Specifically, the target refrigeration unit is turned on to cool down the evaporator inside the target refrigeration unit, and the refrigeration fan inside the target refrigeration unit is turned on to further accelerate the cooling. The temperature of the evaporator inside the target refrigeration unit is detected by the defrost sensor. When the temperature of the evaporator is lower than the preset temperature, it means that the gas inside the target refrigeration unit will not cause the room to heat up. To ensure the evaporator doesn't rapidly reheat, the preset temperature in this embodiment is set to be 5-40°C lower than the compartment's shutdown temperature. If the compartment is a refrigerated compartment with a shutdown temperature of 5°C, the preset temperature can be set between 0°C and -35°C. Specifically, one of these temperatures can be chosen based on actual needs; for example, -10°C. When the defrost sensor detects the evaporator temperature is below -10°C, whether to stop the refrigeration fan and open the target refrigeration unit's air outlet and return air inlet depends on whether any compartment needs refrigeration. If a corresponding compartment needs refrigeration, the damper leading to that compartment is opened, allowing cold air to refrigerate it through the corresponding duct. Simultaneously, another refrigeration unit that has reached the defrost condition can be defrosted. After the target refrigeration unit finishes defrosting, pre-cooling it prevents residual heat from the defrost unit from affecting the compartment and further prevents temperature fluctuations.

[0068] In some other embodiments, the two refrigeration units include a first refrigeration unit and a second refrigeration unit, and the two compartments include a first compartment and a second compartment, wherein the first refrigeration unit is disposed in the first compartment and the second refrigeration unit is disposed in the second compartment.

[0069] Determine if any room in the dual-cooling system requires cooling; if so, open the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room requiring cooling, so that the other cooling unit can cool the room requiring cooling, including:

[0070] When the first refrigeration unit is in the defrosting stage and the first compartment needs cooling, the second refrigeration unit is controlled to cool, and the damper of the second refrigeration unit leading to the first compartment is opened so that the second refrigeration unit can cool the first compartment.

[0071] Specifically, when the refrigeration unit of a compartment is not in the defrosting stage and the compartment needs to be cooled, the refrigeration unit of that compartment is activated to cool it, and the air vent from the refrigeration unit to the compartment is opened so that the cold air generated by the refrigeration unit can cool the compartment.

[0072] As mentioned above Figure 3As shown, specifically, when the first refrigeration unit 311 is not in the defrosting stage and the first compartment 31 needs cooling, the first refrigeration unit 311 is activated, controlling the opening of the first air outlet electric damper 3141 and the first return air outlet electric damper 3161. This allows the cold air generated by the first refrigeration unit 311 to enter the first compartment 31 through the first air outlet 314, along the air duct, and through the air outlet 318 of the first compartment 31, thus cooling the first compartment 31. The high-temperature gas in the first compartment 31 then enters the first return air outlet 316 through the return air outlet 319 of the first compartment 31, and then re-enters the first refrigeration unit 311 for gas exchange. Similarly, when the second refrigeration unit 321 is not in the defrosting stage and the second compartment 32 needs cooling, the process is the same as described above, and will not be repeated here.

[0073] When the first refrigeration unit 311 is defrosting and detects that the temperature of the first compartment 31 has risen and needs to be cooled, all the electric dampers of the first refrigeration unit 311 are closed, the second refrigeration unit 32 is opened for cooling, and the third outlet electric damper 3241 and the third return air electric damper 3261 are opened. This allows the cold air generated by the second refrigeration unit 321 to enter the first compartment 31 through the third outlet 324 along the air duct and through the outlet 318 of the first compartment 31, cooling the first compartment 31. The high-temperature gas in the first compartment 31 returns to the second refrigeration unit 321 through the return air vent 319 of the first compartment 31 and the third return air vent 326 for gas exchange. Conversely, when the second refrigeration unit 321 is defrosting and detects that the second compartment 32 needs to be cooled, the same method is used, which will not be described again here.

[0074] In another embodiment, it is determined whether there is a room in the dual-cooling system that needs cooling; if so, the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room that needs cooling are opened, so that the other cooling unit can cool the room that needs cooling, including:

[0075] When the first refrigeration unit is in the defrosting stage and both the first and second compartments need to be refrigerated, the second refrigeration unit is controlled to refrigerate. The damper of the second refrigeration unit leading to the first and second compartments is opened so that the second refrigeration unit can refrigerate the first and second compartments.

[0076] Specifically, as mentioned above Figure 3As shown, when the first refrigeration unit 311 is defrosting and detects that the temperature of the first compartment 31 and the second compartment 32 has risen and needs to be cooled, all the electric dampers of the first refrigeration unit 311 are closed, the second refrigeration unit 321 is opened for cooling, and the third air outlet electric damper 3241, the fourth air outlet electric damper 3251, the third return air outlet electric damper 3261 and the fourth return air outlet electric damper 3271 are opened, so that the cold air generated by the second refrigeration unit 321 enters the first compartment 31 through the third air outlet 324 along the air duct and through the air outlet 318 of the first compartment 31 to cool the first compartment 31. The high temperature gas in the first compartment 31 returns to the second refrigeration unit 321 through the return air outlet 319 of the first compartment 31 and the third return air outlet 326 for gas exchange. The cold air generated by the second refrigeration unit 321 enters the second chamber 32 through the fourth air outlet 325, along the air duct, and then through the air outlet 328 of the second chamber 32, cooling the second chamber 32. The high-temperature gas in the second chamber 32 returns to the second refrigeration unit 321 through the return air outlet 329 and the fourth return air outlet 327 of the second chamber 32 for gas exchange. Conversely, when the second refrigeration unit 321 is defrosting and detects that the first chamber 31 and the second chamber 32 need cooling, the same method applies, and will not be described again here.

[0077] In addition, the defrosting times of the two refrigeration units are staggered. When one refrigeration unit is in the defrosting stage and the other refrigeration unit also reaches the defrosting condition, the first refrigeration unit will wait until it finishes defrosting before the other refrigeration unit enters the defrosting stage. This is to prevent the room temperature from rising and becoming uncontrollable when both units are defrosting at the same time.

[0078] In some other embodiments, it is determined whether there is a room in the dual-cooling system that needs cooling; if so, the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room that needs cooling are opened, so that the other cooling unit can cool the room that needs cooling, including:

[0079] When the first refrigeration unit is in the defrosting stage and the second compartment needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the damper leading from the second refrigeration unit to the second compartment is opened so that the second refrigeration unit can refrigerate the second compartment.

[0080] Specifically, as mentioned above Figure 3As shown, specifically, when the first refrigeration unit 311 is in the defrosting stage and the second compartment 32 needs to be cooled, all the electric dampers of the first refrigeration unit 311 are closed, the second refrigeration unit 321 is started to refrigerate, and the electric dampers of the fourth air outlet 3251 and the fourth air return vent 3271 are opened, so that the cold air generated by the second refrigeration unit 321 enters the second compartment 32 through the fourth air outlet 325 along the air duct and through the air outlet 328 of the second compartment 32 to cool the second compartment 32. The high-temperature gas in the second compartment 32 enters the second refrigeration unit 321 through the air return vent 329 along the air duct and then enters the fourth air return vent 327 and then enters the second refrigeration unit 321 for gas exchange.

[0081] This embodiment also provides another method for controlling the cooling of a dual-cooling system. Figure 5 This is a flowchart of another cooling control method for a dual-cooling system in this embodiment, as shown below. Figure 5 As shown, the process includes the following steps:

[0082] Step S501: The dual cooling system includes a first cooling unit, a second cooling unit, a first compartment, and a second compartment; a defrost request is received from the first cooling unit;

[0083] Step S502: Determine whether the second refrigeration unit is in the defrosting stage. If yes, proceed to step S503; otherwise, proceed to step S506.

[0084] Step S503: Determine whether the second refrigeration unit has finished defrosting. If yes, proceed to step S504; otherwise, continue to step S514.

[0085] Step S504: Keep all air outlets and return air inlets in the second refrigeration unit closed, start the second refrigeration unit to refrigerate, so that the second refrigeration unit enters the pre-cooling stage;

[0086] Step S505: Determine whether the pre-cooling of the second refrigeration unit has ended. If yes, proceed to step S506; otherwise, proceed to step S515.

[0087] Step S506: Close all air outlets and return air outlets in the first refrigeration unit, control the refrigeration fan in the first refrigeration unit to operate at preset time intervals, and turn on the defrost heater to defrost the first refrigeration unit.

[0088] Step S507: Determine whether the first room needs cooling. If yes, proceed to step S508; otherwise, proceed to step S511.

[0089] Step S508: Determine whether the second room needs cooling; if yes, proceed to step S509; otherwise, proceed to step S510.

[0090] Step S509: Open the second refrigeration unit to perform refrigeration, and open the damper of the second refrigeration unit leading to the first and second compartments to perform refrigeration on the first and second compartments;

[0091] Step S510: Open the second refrigeration unit to refrigerate, and open the damper of the second refrigeration unit leading to the first chamber to refrigerate the first chamber;

[0092] Step S511: Determine whether the second room needs cooling. If yes, proceed to step S512; otherwise, proceed to step S513.

[0093] Step S512: Turn on the second refrigeration unit to refrigerate, and open the damper of the second refrigeration unit leading to the second compartment to refrigerate the second compartment.

[0094] Step S513, End.

[0095] Step S514: Wait for the second refrigeration unit to finish defrosting, and then proceed to step S504;

[0096] Step S515: Wait for the second refrigeration unit to finish pre-cooling, and then proceed to step S506.

[0097] Through steps S501 to S515, when one refrigeration unit in the dual-refrigeration system begins defrosting while the other is not, all air outlets and return air vents of the defrosting unit are closed, and the refrigeration fan within that unit is activated. This accelerates defrosting while preventing the heat generated during defrosting from spreading to the compartments, thus avoiding excessive temperature fluctuations in the refrigerator compartments due to prolonged defrosting. When one refrigeration unit is defrosting and a compartment needs cooling, the other refrigeration unit is activated, and the air vent to the compartment requiring cooling is opened. This prevents the compartment from being unable to cool due to the defrosting unit being in a defrosting phase, thus preventing excessive temperature fluctuations in the refrigerator compartments.

[0098] This embodiment also provides a dual-refrigeration system refrigeration control system, which applies the dual-refrigeration system refrigeration control method described in any of the above embodiments. Figure 6 This is a structural block diagram of the dual-cooling system refrigeration control system of this embodiment. The dual-cooling system refrigeration control system includes: a first refrigeration unit 61, a second refrigeration unit 62, a first compartment 63, a second compartment 64, a main control board 65, and a display board 66; wherein,

[0099] The first refrigeration unit 61 is equipped with an electric damper leading to the first compartment 63 and the second compartment 64, an air outlet, and a return air outlet, used to refrigerate the compartments according to their refrigeration needs.

[0100] The second refrigeration unit 62 is equipped with an electric damper leading to the first compartment 63 and the second compartment 64, an air outlet, and a return air outlet, used to refrigerate the compartments according to their refrigeration needs.

[0101] The main control board 65 is used to control the opening and closing of each electric damper and the operation of the refrigeration fan;

[0102] Display panel 66 is used to set and display the control parameters inside the refrigerator.

[0103] Figure 7 This is a schematic diagram of the control circuit structure of the dual-cooling system in this embodiment, as shown below. Figure 7 As shown, the control circuit includes: compressor 70, exhaust evaporator pipe 71, condenser 72, dryer filter 73, first capillary tube 74, second capillary tube 75, third capillary tube 76, first check valve 77, second check valve 78, first solenoid valve 791, second solenoid valve 792, third solenoid valve 793, fourth solenoid valve 794, and condenser fan 795.

[0104] The compressor 70 is connected in sequence to the exhaust evaporator pipe 71, the condenser 72, the dryer filter 73, the second one-way valve 78, the second capillary tube 75, the third solenoid valve 793, and the second evaporator 322.

[0105] The dryer filter 73 is also connected in sequence to the first solenoid valve 791, the first capillary tube 74, the first evaporator 312, the first check valve 77, the second solenoid valve 792, and the compressor 70;

[0106] The fourth solenoid valve 794 is connected in series with the third capillary tube 76, and then connected in parallel with the two ends of the first solenoid valve 791 and the first capillary tube 74.

[0107] Specifically, the refrigeration system control circuit consists of a compressor 70, an exhaust evaporator pipe 71, a condenser 72, a dryer filter 73, a first capillary tube 74, a second capillary tube 75, a third capillary tube 76, a first one-way valve 77, a second one-way valve 78, a first solenoid valve 791, a second solenoid valve 792, a third solenoid valve 793, a fourth solenoid valve 794, and a condenser fan 795.

[0108] When both the first refrigeration unit 311 and the second refrigeration unit 321 require cooling, the first solenoid valve 791 and the third solenoid valve 793 are opened, and the second solenoid valve 792 and the fourth solenoid valve 794 are closed. The compressor 70 operates, and the first evaporator 312 and the second evaporator 322 run, initiating cooling in both units. When the first refrigeration unit 311 requires cooling but the second refrigeration unit 321 does not, the fourth solenoid valve 794 and the second solenoid valve 792 are opened, and the first solenoid valve 791 and the third solenoid valve 794 are closed. 793. When compressor 70 operates, first evaporator 312 operates, and first refrigeration unit 311 begins cooling; when second refrigeration unit 321 requires cooling but first refrigeration unit 311 does not, third solenoid valve 793 opens, and first solenoid valve 791, second solenoid valve 792, and fourth solenoid valve 794 close, compressor 70 operates, second evaporator 322 operates, and second refrigeration unit 321 begins cooling; when neither first refrigeration unit 311 nor second refrigeration unit 321 requires cooling, all solenoid valves close, and compressor 70 stops operating. This control circuit can achieve temperature equalization in each compartment.

[0109] This embodiment also provides an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0110] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0111] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0112] S1, upon receiving a defrost request from the target refrigeration unit, close all air outlets and return air outlets in the target refrigeration unit, and control the refrigeration fan in the target refrigeration unit to operate at preset time intervals; wherein, the target refrigeration unit is one of two refrigeration units;

[0113] S2, turn on the defrost heater to defrost the target refrigeration unit;

[0114] S3 determines whether there are any compartments in the dual-cooling system that require cooling.

[0115] If so, open the air outlet and return air inlet of the other refrigeration unit (excluding the target refrigeration unit) leading to the room that needs to be refrigerated, so that the other refrigeration unit can refrigerate the room that needs to be refrigerated; wherein, each of the two refrigeration units is equipped with an air outlet and a damper leading to each room.

[0116] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated in this embodiment.

[0117] Furthermore, in conjunction with the dual-cooling system cooling control method provided in the above embodiments, this embodiment can also provide a storage medium for implementation. This storage medium stores a computer program; when executed by a processor, the computer program implements any one of the dual-cooling system cooling control methods in the above embodiments.

[0118] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0119] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0120] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0121] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0122] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A cooling control method for a dual-cooling system, characterized in that, The dual refrigeration system includes two refrigeration units and two compartments, and the method includes: Upon receiving a defrost request from the target refrigeration unit, all air outlets and return air outlets in the target refrigeration unit are closed, and the refrigeration fan in the target refrigeration unit is controlled to operate at preset time intervals; wherein, the target refrigeration unit is one of the two refrigeration units; Turn on the defrost heater to defrost the target refrigeration unit; Determine whether there are any rooms in the dual refrigeration system that require cooling; If so, open the air outlet and return air inlet of the other refrigeration unit (excluding the target refrigeration unit) leading to the room that needs to be refrigerated, so that the other refrigeration unit can refrigerate the room that needs to be refrigerated. The two refrigeration units include a first refrigeration unit and a second refrigeration unit, and the target refrigeration unit is either the first refrigeration unit or the second refrigeration unit. The two compartments include a first compartment and a second compartment. The first refrigeration unit is located in the first compartment, and the second refrigeration unit is located in the second compartment. The first refrigeration unit is provided with dampers corresponding to the air outlet and the air return of the first compartment, respectively. The first refrigeration unit is also provided with dampers corresponding to the air outlet and the air return of the second compartment, respectively. The second refrigeration unit is provided with dampers corresponding to the air outlet and the air return of the first compartment, respectively. The second refrigeration unit is also provided with dampers corresponding to the air outlet and the air return of the second compartment, respectively.

2. The cooling control method for a dual-cooling system according to claim 1, characterized in that, The step of opening the defrost heater to defrost the target refrigeration unit includes: The target refrigeration unit is isolated from the corresponding compartment by a thermal insulation structure.

3. The cooling control method for a dual-cooling system according to claim 1, characterized in that, The method further includes: When the target refrigeration unit is in the defrosting stage and a defrosting request is received from the other refrigeration unit among the two refrigeration units, it is determined whether the target refrigeration unit has finished defrosting; if so, the target refrigeration unit is controlled to enter the pre-cooling stage after defrosting. After the target refrigeration unit has finished pre-cooling, the other refrigeration unit among the two refrigeration units is controlled to defrost.

4. The refrigeration control method for a dual refrigeration system according to claim 3, characterized in that, The pre-cooling stage includes: Keep all air outlets and return air inlets of the target refrigeration unit closed. The target refrigeration unit is started to refrigerate, and the refrigeration fan in the target refrigeration unit is turned on until the defrost sensor temperature in the target refrigeration unit is lower than the preset temperature, wherein the preset temperature is lower than the shutdown point temperature of the room corresponding to the target refrigeration unit. The air outlet and return air inlet dampers leading to the room that needs to be refrigerated are opened to refrigerate the room that needs to be refrigerated.

5. The cooling control method for a dual-cooling system according to claim 1, characterized in that, Determine if any room in the dual-cooling system requires cooling; if so, open the air outlet and return air inlet of the other cooling unit (excluding the target cooling unit) leading to the room requiring cooling, so that the other cooling unit cools the room requiring cooling, including: When the first refrigeration unit is in the defrosting stage and the first compartment needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air outlet and return air inlet of the second refrigeration unit to the first compartment are opened so that the second refrigeration unit can refrigerate the first compartment.

6. The cooling control method for a dual-cooling system according to claim 1, characterized in that, Determine if any room in the dual refrigeration system requires cooling; if so, open the air outlet and return air inlet of the other refrigeration unit (excluding the target refrigeration unit) leading to the room requiring cooling, so that the other refrigeration unit cools the room requiring cooling, including: When the first refrigeration unit is in the defrosting stage, and both the first and second compartments need to be refrigerated, the second refrigeration unit is controlled to refrigerate. The dampers of the second refrigeration unit leading to the air outlet and return air outlet of the first compartment, as well as the dampers leading to the air outlet and return air outlet of the second compartment, are opened so that the second refrigeration unit can refrigerate the first and second compartments.

7. The refrigeration control method for a dual refrigeration system according to claim 1, characterized in that, Determine if any room in the dual refrigeration system requires cooling; if so, open the air outlet and return air inlet of the other refrigeration unit (excluding the target refrigeration unit) leading to the room requiring cooling, so that the other refrigeration unit cools the room requiring cooling, including: When the first refrigeration unit is in the defrosting stage and the second compartment needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air outlet and return air inlet of the second refrigeration unit to the second compartment are opened so that the second refrigeration unit can refrigerate the second compartment.

8. A dual-refrigeration system refrigeration control system, employing the dual-refrigeration system refrigeration control method according to any one of claims 1 to 7, characterized in that, The system includes: a first refrigeration unit, a second refrigeration unit, a first compartment, and a second compartment; wherein, The first refrigeration unit is equipped with an electric damper corresponding to the air outlet and return air outlet of the first room respectively. The first refrigeration unit is also equipped with an electric damper corresponding to the air outlet and return air outlet of the second room respectively. The first refrigeration unit is used to refrigerate the room according to the refrigeration needs of the room. The second refrigeration unit is equipped with motorized dampers corresponding to the air outlet and return air outlet of the first room, respectively. The second refrigeration unit is also equipped with motorized dampers corresponding to the air outlet and return air outlet of the second room, respectively. The second refrigeration unit is used to refrigerate the room according to the room's refrigeration needs.

9. The dual-refrigeration system refrigeration control system according to claim 8, characterized in that, The system also includes: a main control board and a display board, wherein... The main control board is used to control the opening and closing of each electric damper and the operation of the refrigeration fan; the display board is used to set and display the control parameters inside the refrigerator.

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