Refrigeration control method and system for double refrigeration systems

Abstract

The invention relates to a refrigeration control method and system.The refrigeration control method of the double-refrigeration system comprises the steps that the double-refrigeration system comprises two refrigeration units and two chambers, under the condition that a defrosting request of a target refrigeration unit is received, all air outlets and air return ports in the target refrigeration unit are closed, and the defrosting request of the target refrigeration unit is received; a refrigeration fan in the target refrigeration unit is controlled to operate according to a preset time interval; wherein the target refrigeration unit is one of the two refrigeration units; a defrosting heater is turned on, and defrosting treatment is conducted on the target refrigeration unit; judging whether a compartment in the dual-refrigeration system needs to be refrigerated or not; if yes, the air outlet and the air return opening, leading to the chamber needing to be refrigerated, of the other refrigeration unit except the target refrigeration unit in the two refrigeration units are opened, so that the chamber needing to be refrigerated is refrigerated through the other refrigeration unit; the two refrigeration units are respectively provided with an air opening and an air door which are communicated with the chambers. The problem that the temperature fluctuation of the refrigerator compartment is too large is solved.

Description

Technical Field

[0001] The present application relates to the field of refrigerators, and in particular to a refrigeration control method and system for a dual refrigeration system. Background Art

[0002] In the cooling process of refrigerators, three main technologies are used: air cooling, direct cooling or air direct cooling. Air cooling technology uses a fan to send the cold air generated by the evaporator directly into the refrigerator, while direct cooling technology relies on natural air flow to deliver the cold air. Air direct cooling technology combines these two methods, that is, the refrigerator compartment uses direct cooling, while the freezer compartment uses air cooling.

[0003] Although these three technologies have their own characteristics, they all face challenges in maintaining a stable temperature inside the refrigerator. Direct cooling technology relies on natural convection, resulting in less precise temperature control. Although air cooling technology enhances the distribution of cold air through fans, when refrigeration stops, the fans do not work, which will cause temperature differences in different locations inside the refrigerator. In addition, whether it is a direct cooling or air cooling refrigerator, the temporary cessation of the supply of cold air during defrosting may cause the temperature of the refrigerator compartment to rise, resulting in large temperature fluctuations inside the refrigerator, affecting the storage of physical objects in the refrigerator.

[0004] With regard to the problem of excessive temperature fluctuation in the refrigerator compartment in the related art, no effective solution has been proposed yet. Summary of the invention

[0005] In this embodiment, a dual refrigeration system refrigeration control method and system are provided to solve the problem of excessive fluctuation of refrigerator compartment temperature in the related art.

[0006] In a first aspect, a dual refrigeration system refrigeration control method is provided in this embodiment, wherein the dual refrigeration system includes two refrigeration units and two compartments, including:

[0007] When receiving a defrost request from a target refrigeration unit, closing all air outlets and return air outlets in the target refrigeration unit, and controlling a refrigeration fan in the target refrigeration unit to operate at a preset time interval; wherein the target refrigeration unit is one of the two refrigeration units;

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

[0009] Determine whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, open the air outlet and return air outlet of the other refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated, so that the other refrigeration unit can cool the compartment that needs to be refrigerated; wherein each of the two refrigeration units is provided with an air outlet and an air door leading to each compartment.

[0010] In some embodiments, turning on the defrost heater to perform defrosting on the target refrigeration unit includes:

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

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

[0013] After it is detected that the pre-cooling of the target refrigeration unit is completed, the other refrigeration unit of the two refrigeration units except the target refrigeration unit is controlled to perform defrosting.

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

[0015] Control all air outlets and return air outlets of the target refrigeration unit to remain closed;

[0016] The target refrigeration unit is started for refrigeration, and the refrigeration fan in the target refrigeration unit is turned on until the temperature of the defrost sensor in the target refrigeration unit is lower than a preset temperature, wherein the preset temperature is lower than the shutdown point temperature of the compartment corresponding to the target refrigeration unit, and the air door leading to the compartment to be refrigerated is opened to refrigerate the compartment to be refrigerated.

[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 compartment in the dual refrigeration system that needs to be refrigerated; if so, an air outlet and an air return outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including:

[0019] When the first refrigeration unit is in the defrosting stage and the first chamber needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the first chamber is opened so that the second refrigeration unit refrigerates the first chamber.

[0020] In some embodiments, it is determined whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, an air outlet and an air return outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including:

[0021] When the first refrigeration unit is in the defrosting stage and both the first chamber and the second chamber need to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the first chamber and the second chamber is opened, so that the second refrigeration unit cools the first chamber and the second chamber.

[0022] In some embodiments, it is determined whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, an air outlet and an air return outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including:

[0023] When the first refrigeration unit is in the defrosting stage and the second chamber needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the second chamber is opened, so that the second refrigeration unit cools the second chamber.

[0024] In a second aspect, a dual refrigeration system refrigeration control system is provided in this embodiment, and the dual refrigeration system refrigeration control method described in the first aspect is applied, and the system includes: a first refrigeration unit, a second refrigeration unit, a first chamber, and a second chamber; wherein,

[0025] The first refrigeration unit is provided with an electric damper, an air outlet and an air return outlet leading to the first compartment and the second compartment, and is used to cool the compartment according to the refrigeration demand of the compartment;

[0026] The second refrigeration unit is provided with an electric damper, an air outlet and an air return outlet leading to the first compartment and the second compartment, and is used for cooling the compartment according to the refrigeration demand of the compartment.

[0027] In some of the embodiments, the system further comprises: a main control panel and a display panel, wherein:

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

[0029] Compared with the related art, the dual refrigeration system refrigeration control method provided in this embodiment comprises two refrigeration units and two compartments. When receiving a defrosting request from a 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; wherein the target refrigeration unit is one of the two refrigeration units; the defrosting heater is turned on to defrost the target refrigeration unit; it is determined whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, the air outlet and return air outlet of the other refrigeration unit other than the target refrigeration unit leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated; wherein each of the two refrigeration units is provided with an air outlet and an air door leading to each compartment. The problem of excessive temperature fluctuation in the refrigerator compartment is solved.

[0030] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 It is a hardware structure block diagram of a terminal of the dual refrigeration system refrigeration control method of this embodiment.

[0033] Figure 2 4 is a flow chart of the refrigeration control method of the dual refrigeration system of this embodiment.

[0034] Figure 3 Schematic diagram of the dual refrigeration system structure of this embodiment.

[0035] Figure 4 This is a flow chart of pre-cooling after defrosting of the target refrigeration unit in this embodiment.

[0036] Figure 5 It is a flow chart of another refrigeration control method of a dual refrigeration system of this embodiment.

[0037] Figure 6 It is a structural block diagram of the dual refrigeration system refrigeration control system of this embodiment.

[0038] Figure 7 Schematic diagram of the control circuit structure of the dual refrigeration system of this embodiment. DETAILED DESCRIPTION

[0039] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0040] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0041] The method embodiment provided in this embodiment can be executed in a terminal, a computer or a similar computing device. For example, running on a terminal, Figure 1 is a hardware structure block diagram of a terminal of the dual refrigeration system refrigeration control method of this embodiment. Figure 1 As shown, the terminal may include one or more ( Figure 1 Only one is shown in the figure) processor 102 and memory 104 for storing data, wherein processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0042] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the dual refrigeration system refrigeration 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, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0043] The transmission device 106 is used to receive or send data via a network. The above network includes a wireless network provided by the communication provider of the terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0044] In this embodiment, a dual refrigeration system refrigeration control method is provided. Figure 2 is a flow chart of the dual refrigeration system refrigeration control method of this embodiment. Figure 2 As shown, the process includes the following steps:

[0045] Step S201, the dual refrigeration system includes two refrigeration units and two compartments. When receiving a defrost request from a 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; wherein the target refrigeration unit is one of the two refrigeration units; the defrost heater is turned on to perform defrost processing on the target refrigeration unit.

[0046] Specifically, Figure 3 Schematic diagram of the dual refrigeration system structure of this embodiment. 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 compartments respectively and are independent of each other. One of the two compartments is a refrigeration compartment, and the other can be in the refrigeration compartment or in a freezing compartment or a temperature-changing room. If both are refrigeration compartments, two refrigeration units are set in the refrigeration compartment. However, from the perspective of energy saving, the optimal setting scheme is to set them in other compartments except the refrigeration compartment, so that the refrigeration functions between the compartments can be used interchangeably through the set pipes, and the arrangement of the air duct can also be reduced, thereby reducing the occupied space of the air duct in the refrigerator. The two compartments are connected to each other through the air duct.

[0047] The first refrigeration unit 311 is located in the first chamber 31, and includes a first evaporator 312, a first defrosting 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 chamber 32, and includes a second evaporator 322, a second defrosting 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, and the first air outlet 314 and the third air outlet 324 are also connected to the air outlet 318 of the first chamber 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 chamber 32;

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

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

[0053] Taking the first refrigeration unit as the target refrigeration unit as an example, when the first refrigeration unit 311 needs to be defrosted, 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 started to heat and defrost. By closing all the dampers in the first refrigeration unit 311 and then heating and defrosting, the heat generated by the first refrigeration unit 311 during the defrosting process can be prevented from diffusing to the first chamber 31 and the second chamber 32, thereby increasing the temperature of the chamber. During this period, the first refrigeration fan 310 in the first refrigeration unit 311 is controlled to operate intermittently for a short time, for example, the first refrigeration fan 310 is controlled to operate for 10 seconds per minute, so that the temperature on the first evaporator 312 is more uniform, the defrosting time is shortened, and the defrosting is accelerated, and the defrosting water on the first evaporator 312 can also be separated from the first evaporator 312 faster. When the second refrigeration unit needs to be defrosted, the method is the same as the above method, which will not be repeated here.

[0054] Step S202, determining whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, opening the air outlet and return air outlet of the other refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated; wherein each of the two refrigeration units is provided with an air outlet and an air door leading to each compartment.

[0055] Specifically, when the target refrigeration unit (such as the first refrigeration unit 311) in the dual refrigeration system is in defrosting, one or both of the two compartments need to be refrigerated, and the other refrigeration unit (the second refrigeration unit 321) is turned on for refrigeration, and all the air outlets and return air outlets of the first refrigeration unit 311 are kept closed, that is, 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 kept closed. The damper of the second refrigeration unit 321 leading to the compartment that needs to be refrigerated is opened. For example, at this time, the first compartment 31 needs to be refrigerated, and the third air outlet electric damper 3241 and the third return air outlet electric damper 3261 are opened to allow the cold air in the second refrigeration unit 321 to enter the first compartment 31 for refrigeration. When the second compartment 32 also needs to be refrigerated, the fourth air outlet electric damper 3251 and the fourth air return outlet electric damper 3271 are opened to allow the cold air in the second refrigeration unit 321 to enter the second compartment 32 for refrigeration.

[0056] Through the above steps S201 to S202, the dual refrigeration system includes two refrigeration units and two compartments. When receiving a defrost request from a 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; wherein the target refrigeration unit is one of the two refrigeration units; the defrost heater is turned on to perform defrost treatment on the target refrigeration unit; it is determined whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, the air outlet and return air outlet of the other refrigeration unit other than the target refrigeration unit of the two refrigeration units leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit cools the compartment that needs to be refrigerated; wherein each of the two refrigeration units is provided with an air outlet and an air door leading to each compartment. Compared with the prior art that only refrigerates the refrigerator by air cooling and direct cooling, the present application closes all the air outlets and return air outlets of the refrigeration unit when the refrigeration unit starts to defrost, and starts the refrigeration fan in the refrigeration unit to accelerate the defrosting while preventing the temperature heated by defrosting from spreading to the compartment, thereby avoiding the problem of excessive temperature fluctuations in the refrigerator compartment caused by a large rise in the compartment temperature due to a long defrosting time. In addition, when one of the refrigeration units is in the defrosting stage, the cold air is transported to the corresponding compartment through an independent air duct through the refrigeration of another refrigeration unit, thereby solving the problem of excessive temperature fluctuations in the refrigerator compartment caused by a large rise in the refrigerator compartment temperature due to the refrigeration unit of the compartment failing to refrigerate during the defrosting stage.

[0057] In some embodiments, turning on the defrost heater to perform defrosting on the target refrigeration unit includes:

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

[0059] Specifically, in the dual refrigeration system of this embodiment, a heat insulation structure is also provided in the refrigeration unit and the compartment. During the defrosting stage of the refrigeration unit, the heat of the refrigeration unit during the defrosting period is prevented from being transferred to the compartment through the heat insulation layer, thereby further reducing the temperature rise of the compartment. Figure 3 As shown, a first heat insulating layer 33 is provided between the first refrigeration unit 311 and the first chamber 31, and the first heat insulating layer 33 is used to prevent the heat generated by the first refrigeration unit 311 during defrosting from being transferred to the first chamber 31; a second heat insulating layer 34 is provided between the second refrigeration unit 321 and the second chamber 32, and the second heat insulating layer 34 is used to prevent the heat generated by the second refrigeration unit 321 during defrosting from being transferred to the second chamber 32.

[0060] In another embodiment, when the target refrigeration unit is in the defrosting stage and a defrosting request is received from another refrigeration unit other than the target refrigeration unit, it is determined whether the defrosting of the target refrigeration unit is completed; if so, the target refrigeration unit is controlled to enter the pre-cooling stage after defrosting;

[0061] After detecting that the pre-cooling of the target refrigeration unit is completed, the other refrigeration unit of the two refrigeration units except the target refrigeration unit is controlled to perform defrosting.

[0062] Specifically, when one of the two refrigeration units (defined as the target refrigeration unit in this embodiment) is in the defrosting stage, the other refrigeration unit has also reached the defrosting condition and needs to be defrosted. In order to ensure that there are rooms that need to be refrigerated during this period and there are refrigeration units to cool down, the other refrigeration unit is not defrosted first, and the other refrigeration unit is defrosted after the target refrigeration unit is defrosted. After the target refrigeration unit is defrosted, pre-cooling after defrosting is turned on, and the other refrigeration unit is defrosted after the pre-cooling of the target refrigeration unit is completed.

[0063] Wherein, in another embodiment, Figure 4 This is a flow chart of pre-cooling after defrosting of the target refrigeration unit in this embodiment. Figure 4 As shown, the pre-cooling process includes the following steps:

[0064] Step S401, controlling all air outlets and return air outlets of the target refrigeration unit to remain in a closed state;

[0065] Specifically, after defrosting of the target refrigeration unit is completed, all air outlets and return air outlets of the target refrigeration unit are still kept closed to prevent the residual hot air from defrosting in the target refrigeration unit from diffusing to the compartment, thereby causing the temperature of the compartment to rise.

[0066] Step S402, starting the target refrigeration unit for refrigeration, and turning on the refrigeration fan in the target refrigeration unit until the temperature of the defrost sensor in the target refrigeration unit is lower than a preset temperature.

[0067] Specifically, the target refrigeration unit is turned on for refrigeration to reduce the temperature of the evaporator in the target refrigeration unit, and the refrigeration fan in the target refrigeration unit is turned on to further accelerate the cooling. The temperature of the evaporator in the target refrigeration unit is detected by the defrost sensor. When the temperature of the evaporator is lower than the preset temperature, it indicates that the gas in the target refrigeration unit will not cause the temperature of the compartment to rise. Among them, in order to ensure that the evaporator will not quickly return to temperature, the preset temperature in this embodiment is set to a temperature value 5-40°C lower than the shutdown point temperature of the compartment. If the compartment is a refrigerated compartment and the shutdown point temperature of the refrigerated compartment is 5°C, the preset temperature can be set to between 0°C and minus 35°C. Specifically, one of the temperatures between 0°C and minus 35°C can be taken as the preset temperature according to actual needs. For example, -10°C is taken as the preset temperature. When the temperature of the evaporator detected by the defrost sensor is lower than -10°C, whether to stop the operation of the refrigeration fan and whether to open the air outlet and return air outlet of the target refrigeration unit is determined according to whether there is actually a compartment that needs to be refrigerated. If there is a corresponding compartment that needs to be refrigerated, the damper leading to the corresponding compartment is opened, and the cold air is passed through the corresponding air duct to refrigerate the compartment. At the same time, another refrigeration unit that meets the defrosting conditions can be defrosted. After the target refrigeration unit finishes defrosting, the target refrigeration unit is pre-cooled to prevent the residual hot air in the target refrigeration unit from affecting the compartment, and further prevent the compartment temperature from fluctuating.

[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 whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, open the air outlet and return air outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated, so that the other refrigeration unit can cool the compartment that needs to be refrigerated, including:

[0070] When the first refrigeration unit is in the defrosting stage and the first chamber needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the first chamber is opened so that the second refrigeration unit refrigerates the first chamber.

[0071] Specifically, when the refrigeration unit of the compartment is not in the defrosting stage and the compartment needs to be cooled, the refrigeration unit of the compartment is started for cooling, and the damper of 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 to be cooled, the first refrigeration unit 311 is started for refrigeration, and the first air outlet electric damper 3141 and the first return air outlet electric damper 3161 are controlled to be opened, so that the cold air generated by the first refrigeration unit 311 passes through the first air outlet 314 along the air duct and passes through the air outlet 318 of the first compartment 31 into the first compartment 31, and the first compartment 31 is cooled. The high-temperature gas in the first compartment 31 passes through the return air outlet 319 of the first compartment 31 along the air duct and enters the first return air outlet 316 and then 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 to be cooled, the method is the same as the above method, which will not be described in detail here.

[0073] When the first refrigeration unit 311 is defrosting and detects that the temperature of the first chamber 31 rises and needs to be cooled, all the electric dampers of the first refrigeration unit 311 are controlled to close, the second refrigeration unit 32 is opened for refrigeration, and then the third air outlet electric damper 3241 and the third return air outlet electric damper 3261 are opened, so that the cold air generated by the second refrigeration unit 321 passes through the third air outlet 324 along the air duct and then passes through the air outlet 318 of the first chamber 31 to enter the first chamber 31, and the high-temperature gas in the first chamber 31 returns to the second refrigeration unit 321 through the return air port 319 of the first chamber 31 and the third return air port 326 for gas exchange. Conversely, when the second refrigeration unit 321 is defrosting and detects that the second chamber 32 needs to be cooled, the above method is the same and will not be repeated here.

[0074] In another embodiment, it is determined whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, an air outlet and an air return outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including:

[0075] When the first refrigeration unit is in the defrosting stage and both the first chamber and the second chamber need to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the first chamber and the second chamber is opened, so that the second refrigeration unit cools the first chamber and the second chamber.

[0076] Specifically, as mentioned above Figure 3As shown, when the first refrigeration unit 311 is defrosting and it is detected that the temperature of the first chamber 31 and the second chamber 32 rises and needs to be cooled, all the electric dampers of the first refrigeration unit 311 are controlled to be closed, the second refrigeration unit 321 is opened for refrigeration, and then 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 passes through the third air outlet 324 along the air duct and then passes through the air outlet 318 of the first chamber 31 into the first chamber 31, so as to cool the first chamber 31, and the high-temperature gas in the first chamber 31 returns to the second refrigeration unit 321 through the return air port 319 and the third return air port 326 of the first chamber 31 for gas exchange. The cold air generated by the second refrigeration unit 321 passes through the fourth air outlet 325 along the air duct and then passes through the air outlet 328 of the second chamber 32 to enter the second chamber 32, thereby cooling the second chamber 32. The high-temperature gas in the second chamber 32 passes through the return air port 329 and the fourth return air port 327 of the second chamber 32 to return to the second refrigeration unit 321 for gas exchange. On the contrary, when the second refrigeration unit 321 is defrosting and detects that the first chamber 31 and the second chamber 32 need to be cooled, the above method is the same and will not be described in detail here.

[0077] In addition, the defrosting time of the two refrigeration units is staggered. When one of the refrigeration units is in the defrosting stage and the other refrigeration unit also reaches the defrosting conditions, the refrigeration unit will enter the defrosting stage after the defrosting of the first refrigeration unit is completed, so as to prevent the two from defrosting at the same time and the room temperature from rising and being unable to be controlled.

[0078] In some other embodiments, it is determined whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, an air outlet and an air return outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated are opened, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including:

[0079] When the first refrigeration unit is in the defrosting stage and the second chamber needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the second chamber is opened, so that the second refrigeration unit cools the second chamber.

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

[0081] Another refrigeration control method for a dual refrigeration system is also provided in this embodiment. Figure 5 is a flow chart of another dual refrigeration system refrigeration control method of this embodiment. Figure 5 As shown, the process includes the following steps:

[0082] Step S501, the dual refrigeration system includes a first refrigeration unit, a second refrigeration unit, a first chamber and a second chamber; receiving a defrost request of the first refrigeration unit;

[0083] Step S502, determining whether the second refrigeration unit is in the defrosting stage, if so, executing step S503, otherwise, executing step S506;

[0084] Step S503, determining whether the second refrigeration unit has finished defrosting, if so, executing step S504, otherwise continuing to execute step S514;

[0085] Step S504, keeping all the air outlets and return air outlets in the second refrigeration unit closed, starting the second refrigeration unit for refrigeration, so that the second refrigeration unit enters a pre-cooling stage;

[0086] Step S505, determining whether the pre-cooling of the second refrigeration unit is completed, if so, executing step S506, otherwise, executing step S515;

[0087] Step S506, closing all air outlets and return air outlets in the first refrigeration unit, controlling the refrigeration fan in the first refrigeration unit to operate at a preset time interval, and turning on the defrost heater to defrost the first refrigeration unit;

[0088] Step S507, determining whether the first room needs cooling, if so, executing step S508, otherwise, executing step S511;

[0089] Step S508, determining whether the second room needs cooling; if so, executing step S509; otherwise, executing step S510;

[0090] Step S509, turning on the second refrigeration unit for cooling, and opening the damper of the second refrigeration unit leading to the first chamber and the second chamber to cool the first chamber and the second chamber;

[0091] Step S510, turning on the second refrigeration unit for cooling, and opening the damper of the second refrigeration unit leading to the first room to cool the first room;

[0092] Step S511, determining whether the second chamber needs cooling, if so, executing step S512, otherwise, executing step S513;

[0093] Step S512, turning on the second refrigeration unit for cooling, and opening the damper of the second refrigeration unit leading to the second chamber to cool the second chamber.

[0094] Step S513, end.

[0095] Step S514, wait until the defrosting of the second refrigeration unit is completed, and execute step S504;

[0096] Step S515, wait until the pre-cooling of the second refrigeration unit is completed, and then execute step S506.

[0097] Through the above steps S501 to S515, when one of the refrigeration units in the dual refrigeration system starts to defrost and the other refrigeration unit is not in the defrosting stage, all the air outlets and return air outlets of the refrigeration unit are closed, and the refrigeration fan in the refrigeration unit is started to operate, so as to accelerate the defrosting while preventing the temperature heated by the defrosting from spreading to the compartment, so as to avoid the problem of excessive fluctuation of the temperature of the refrigerator compartment due to a large rise in the temperature of the refrigerator compartment caused by a long defrosting time. When one of the refrigeration units is in the defrosting stage and there is a compartment that needs to be refrigerated, the other refrigeration unit is controlled to perform refrigeration, and the air door leading to the compartment that needs to be refrigerated is opened to refrigerate the compartment that needs to be refrigerated. In this way, the problem that the compartment that needs to be refrigerated cannot be refrigerated by the refrigeration unit due to the refrigeration unit being in the defrosting stage is prevented, and excessive fluctuation of the refrigerator compartment temperature is prevented.

[0098] In this embodiment, a dual refrigeration system refrigeration control system is provided, and the dual refrigeration system refrigeration control method described in any of the above embodiments is applied. Figure 6 : is a structural block diagram of a dual refrigeration system refrigeration control system of this embodiment, and the dual refrigeration 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 provided with an electric damper, an air outlet and an air return outlet leading to the first chamber 63 and the second chamber 64, and is used to cool the chamber according to the refrigeration demand of the chamber;

[0100] The second refrigeration unit 62 is provided with an electric damper, an air outlet and an air return outlet leading to the first compartment 63 and the second compartment 64, and is used to cool the compartment according to the refrigeration demand of the compartment.

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

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

[0103] Figure 7 Schematic diagram of the control circuit structure of the dual refrigeration system of this embodiment. Figure 7 As shown, the control circuit includes a compressor 70, an exhaust evaporation pipe 71, a condenser 72, a drying 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 condensing fan 795;

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

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

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

[0107] Specifically, the refrigeration system control circuit is composed of a compressor 70, an exhaust evaporator 71, a condenser 72, a drying filter 73, a first capillary 74, a second capillary 75, a third capillary 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 condensing fan 795.

[0108] When the first refrigeration unit 311 and the second refrigeration unit 321 both need refrigeration, the first solenoid valve 791 and the third solenoid valve 793 are opened, the second solenoid valve 792 and the fourth solenoid valve 794 are closed, the compressor 70 is running, the first evaporator 312 and the second evaporator 322 are running, and the first refrigeration unit 311 and the second refrigeration unit 322 start refrigeration; when the first refrigeration unit 311 needs refrigeration and the second refrigeration unit 321 does not need refrigeration, the fourth solenoid valve 794 and the second solenoid valve 792 are opened, the first solenoid valve 791 and the third solenoid valve 793 are closed, and the compressor 70 is running, the first evaporator 312 and the second evaporator 322 are running, and the first refrigeration unit 311 and the second refrigeration unit 322 start refrigeration; when the first refrigeration unit 311 needs refrigeration and the second refrigeration unit 321 does not need refrigeration, the fourth solenoid valve 794 and the second solenoid valve 792 are opened, and the first solenoid valve 791 and the third solenoid valve 793 are closed. 793, the compressor 70 is running, the first evaporator 312 is running, and the first refrigeration unit 311 starts to refrigerate; when the second refrigeration unit 321 needs to be refrigerated and the first refrigeration unit 311 does not need to be refrigerated, the third solenoid valve 793 is opened, the first solenoid valve 791, the second solenoid valve 792 and the fourth solenoid valve 794 are closed, the compressor 70 is running, the second evaporator 322 is running, and the second refrigeration unit 321 starts to refrigerate; when both the first refrigeration unit 311 and the second refrigeration unit 321 do not need to be refrigerated, all solenoid valves are closed and the compressor 70 stops running. The temperature of each compartment can be balanced through this control circuit.

[0109] In this embodiment, an electronic device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one 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 may be configured to perform the following steps through a computer program:

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

[0113] S2, turning on the defrost heater to perform defrosting on the target refrigeration unit;

[0114] S3, determining whether there is a room in the dual refrigeration system that needs to be refrigerated;

[0115] If so, the air outlet and return air outlet of the other refrigeration unit other than the target refrigeration unit leading to the compartment to be refrigerated are opened, so that the other refrigeration unit can cool the compartment to be refrigerated; wherein each of the two refrigeration units is provided with an air outlet and a damper leading to each compartment.

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

[0117] In addition, in combination with the dual refrigeration system refrigeration control method provided in the above embodiments, a storage medium can also be provided in this embodiment to implement the dual refrigeration system refrigeration control method. The storage medium stores a computer program; when the computer program is executed by the processor, any dual refrigeration system refrigeration control method in the above embodiments is implemented.

[0118] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0119] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0120] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0121] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present 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), magnetoresistive 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0122] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A refrigeration control method for a dual refrigeration system, characterized in that: The dual refrigeration system includes two refrigeration units and two compartments, and the method includes: When receiving a defrost request from a target refrigeration unit, closing all air outlets and return air outlets in the target refrigeration unit, and controlling a refrigeration fan in the target refrigeration unit to operate at a preset time interval; wherein the target refrigeration unit is one of the two refrigeration units; Turning on the defrost heater to perform defrosting on the target refrigeration unit; Determine whether there is a room in the dual refrigeration system that needs refrigeration; If so, the air outlet and return air outlet of another refrigeration unit of the two refrigeration units other than the target refrigeration unit leading to the compartment to be refrigerated are opened, so that the other refrigeration unit cools the compartment to be refrigerated; wherein each of the two refrigeration units is provided with an air outlet and an air door leading to each compartment.

2. The dual refrigeration system refrigeration control method according to claim 1, characterized in that: The step of turning on the defrost heater to perform defrosting on the target refrigeration unit includes: The target refrigeration unit and a compartment corresponding to the target refrigeration unit are isolated by a heat insulation structure.

3. The dual refrigeration system refrigeration control method according to claim 1, characterized in that: The method further comprises: When the target refrigeration unit is in the defrosting stage and a defrosting request is received from another refrigeration unit other than the target refrigeration unit, it is determined whether the defrosting of the target refrigeration unit is completed; if so, the target refrigeration unit is controlled to enter a pre-cooling stage after defrosting; After detecting that the pre-cooling of the target refrigeration unit is completed, controlling another refrigeration unit of the two refrigeration units except the target refrigeration unit to defrost.

4. The dual refrigeration system refrigeration control method according to claim 3, characterized in that: The pre-cooling stage comprises: Controlling all air outlets and return air outlets of the target refrigeration unit to remain in a closed state; The target refrigeration unit is started for refrigeration, and the refrigeration fan in the target refrigeration unit is turned on until the temperature of the defrost sensor in the target refrigeration unit is lower than a preset temperature, wherein the preset temperature is lower than the shutdown point temperature of the compartment corresponding to the target refrigeration unit, and the air door leading to the compartment that needs refrigeration is opened to cool the compartment that needs refrigeration.

5. The dual refrigeration system refrigeration control method according to claim 1, characterized in that: 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.

6. The dual refrigeration system refrigeration control method according to claim 5, characterized in that: Determine whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, open the air outlet and the air return outlet of another refrigeration unit other than the target refrigeration unit in the two refrigeration units leading to the compartment that needs to be refrigerated, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including: When the first refrigeration unit is in the defrosting stage and the first chamber needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the damper of the second refrigeration unit to the first chamber is opened, so that the second refrigeration unit cools the first chamber.

7. The dual refrigeration system refrigeration control method according to claim 5, characterized in that: Determine whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, open the air outlet and the air return outlet of another refrigeration unit of the two refrigeration units other than the target refrigeration unit leading to the compartment that needs to be refrigerated, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including: When the first refrigeration unit is in the defrosting stage and both the first chamber and the second chamber need to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the first chamber and the second chamber is opened, so that the second refrigeration unit cools the first chamber and the second chamber.

8. The dual refrigeration system refrigeration control method according to claim 5, characterized in that: Determine whether there is a compartment in the dual refrigeration system that needs to be refrigerated; if so, open the air outlet and the air return outlet of another refrigeration unit of the two refrigeration units other than the target refrigeration unit leading to the compartment that needs to be refrigerated, so that the other refrigeration unit refrigerates the compartment that needs to be refrigerated, including: When the first refrigeration unit is in the defrosting stage and the second chamber needs to be refrigerated, the second refrigeration unit is controlled to refrigerate, and the air door of the second refrigeration unit to the second chamber is opened, so that the second refrigeration unit cools the second chamber.

9. A dual refrigeration system refrigeration control system, using the dual refrigeration system refrigeration control method according to any one of claims 1 to 8, characterized in that: The system comprises: a first refrigeration unit, a second refrigeration unit, a first chamber, and a second chamber; wherein, The first refrigeration unit is provided with an electric damper, an air outlet and an air return outlet leading to the first chamber and the second chamber, and is used to cool the chamber according to the refrigeration requirements of the chamber; The second refrigeration unit is provided with an electric damper, an air outlet and an air return outlet leading to the first chamber and the second chamber, and is used to cool the chamber according to the refrigeration demand of the chamber.

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

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