Refrigerator control method and device and refrigerator

Abstract

The invention relates to a refrigerator control method and device and a refrigerator. The method comprises the steps that when the environment temperature of the refrigerator is smaller than the set temperature of a refrigerating chamber of the refrigerator and the current temperature of the refrigerating chamber is smaller than a preset first temperature threshold value, under the condition that a freezing chamber of the refrigerator has the refrigeration requirement, the refrigerating chamber of the refrigerator is heated by controlling an expansion valve, a condensation fan and a refrigerating fan of the refrigerator, the current temperature of the refrigerating chamber of the refrigerator is higher than a preset second temperature threshold value; the preset first temperature threshold value is a preset starting temperature for heating the refrigerating chamber; the preset second temperature threshold value is a preset shutdown temperature for heating the refrigerating chamber; the preset first temperature threshold value is smaller than the set temperature of the refrigerating chamber; the preset second temperature threshold value is larger than the set temperature of the refrigerating chamber. By means of the control method, the problem that according to an existing control method of the refrigerator, due to the fact that the refrigerating chamber cannot be heated, food in the refrigerating chamber is frozen to be damaged when the room temperature is too low can be solved.

Description

Technical Field

[0001] The present application relates to the field of refrigeration and freezing technology, and in particular to a refrigerator control method and device and a refrigerator. Background Art

[0002] With the development of electronic technology, refrigeration and freezing technology has also developed rapidly. As a necessary refrigeration and freezing equipment for home, people's requirements for refrigerators are gradually increasing with the development of refrigerator technology.

[0003] The refrigerator is equipped with a refrigerator compartment and a freezer compartment, wherein the refrigerator compartment is used to store foods that do not need to be frozen, such as vegetables, fruits, dairy products, etc. Normally, in order to ensure the freshness of the food in the refrigerator compartment, the temperature of the refrigerator compartment needs to be maintained between 2°C and 4°C. When the room temperature is higher than the temperature set for the refrigerator compartment, the refrigerator controls the temperature of the refrigerator compartment by cooling the refrigerator compartment. However, when the room temperature is too low, even below 0°C, after the refrigerator door is opened and closed, the air in the refrigerator compartment interacts with the room temperature, causing the temperature of the refrigerator compartment to be too low, which may freeze the food in the refrigerator compartment.

[0004] However, the existing control method of the refrigerator can only cool the refrigerating chamber but cannot heat the refrigerating chamber.

[0005] With regard to the existing control method of refrigerators, since the refrigerator compartment cannot be heated, there is a problem that food in the refrigerator compartment may be frozen when the room temperature is too low, and no effective solution has been proposed so far. Summary of the invention

[0006] Based on this, it is necessary to provide a refrigerator control method, device and a refrigerator to address the above technical problems.

[0007] In a first aspect, the present application provides a method for controlling a refrigerator. The method comprises the following steps:

[0008] When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's cold storage chamber, and the current temperature of the cold storage chamber is lower than a preset first temperature threshold, when there is a cooling demand in the freezer chamber of the refrigerator, the cold storage chamber of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigeration fan of the refrigerator until the current temperature of the cold storage chamber of the refrigerator is higher than a preset second temperature threshold; the preset first temperature threshold is a preset start-up temperature for heating the cold storage chamber; the preset second temperature threshold is a preset shut-down temperature for heating the cold storage chamber; the preset first temperature threshold is lower than the set temperature of the cold storage chamber; the preset second temperature threshold is higher than the set temperature of the cold storage chamber.

[0009] In one of the embodiments, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator, and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold, including the following steps:

[0010] When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's cold storage chamber, and the current temperature of the cold storage chamber is lower than the preset first temperature threshold, when there is a demand for cooling in the freezer chamber of the refrigerator, the refrigerator's cold storage chamber is heated by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigeration fan to be turned on until the current temperature of the refrigerator's cold storage chamber is higher than the preset second temperature threshold.

[0011] In one embodiment, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator, and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold, the following steps are included:

[0012] Acquire the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment of the refrigerator;

[0013] Determine the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment of the refrigerator.

[0014] In one embodiment, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator, and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold, the following steps are included:

[0015] Turn off the refrigeration fan.

[0016] In one embodiment, the refrigerator control method further includes the following steps:

[0017] Determining whether there is a refrigeration demand for the freezer compartment of the refrigerator;

[0018] When there is a refrigeration demand in the freezer compartment of the refrigerator, turning on the compressor of the refrigerator;

[0019] When there is no refrigeration demand in the freezer compartment of the refrigerator, the compressor of the refrigerator is turned off.

[0020] In one embodiment, the refrigerator control method further includes the following steps:

[0021] When the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator compartment, determining whether the refrigerator meets the defrosting condition;

[0022] When the refrigerator meets the defrosting condition and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the defrosting time meets the preset defrosting time length;

[0023] When the refrigerator does not meet the defrosting conditions and the current temperature of the refrigerating chamber is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerating chamber of the refrigerator is refrigerated by controlling the opening of the expansion valve, the condensing fan, and the refrigerating fan until the current temperature of the refrigerating chamber of the refrigerator is less than the preset first temperature threshold.

[0024] In one embodiment, when the refrigerator meets the defrosting condition and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the defrosting time meets the preset defrosting time, including the following steps:

[0025] When the refrigerator meets the defrosting conditions and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigeration fan to be turned off until the defrosting time meets the preset defrosting time length.

[0026] In one embodiment, when the refrigerator does not meet the defrosting condition and the current temperature of the refrigerating chamber is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerating chamber of the refrigerator is refrigerated by controlling the opening of the expansion valve, the condensing fan, and the refrigerating fan until the current temperature of the refrigerating chamber of the refrigerator is less than the preset first temperature threshold, including the following steps:

[0027] When the refrigerator does not meet the defrost conditions and the current temperature of the cold storage chamber is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the opening of the expansion valve is adjusted according to the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the cold storage chamber, and the condensing fan and the refrigerating fan are controlled to be turned on to cool the cold storage chamber of the refrigerator until the current temperature of the cold storage chamber of the refrigerator is lower than the preset first temperature threshold, and then the refrigerating fan is turned off.

[0028] In a second aspect, the present application also provides a control device for a refrigerator. The device comprises:

[0029] A heating module is used for heating the refrigerator compartment of the refrigerator by controlling the opening of the expansion valve, condensing fan and refrigerating fan of the refrigerator when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, and when there is a cooling demand in the freezer compartment of the refrigerator, until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold; the preset first temperature threshold is a preset start-up temperature for heating the refrigerator compartment; the preset second temperature threshold is a preset shut-down temperature for heating the refrigerator compartment; the preset first temperature threshold is lower than the set temperature of the refrigerator compartment; the preset second temperature threshold is higher than the set temperature of the refrigerator compartment.

[0030] In a third aspect, the present application further provides a refrigerator, comprising a refrigerating chamber, a freezing chamber and a temperature control system, wherein the temperature control system is used to implement the control method of the refrigerator in the first aspect; the temperature control system comprises: a compressor, a condensing module, an expansion valve, a refrigerating module, a capillary tube, a switching module and a freezing module;

[0031] The compressor is connected to the condenser module and the switching module, and is used to compress the low-temperature and low-pressure refrigerant received from the switching module into a high-temperature and high-pressure refrigerant when there is a refrigeration demand in the freezer compartment of the refrigerator;

[0032] The condensing module comprises a condenser and a condensing fan; the condenser is connected to the compressor and the expansion valve respectively, and is used to cool the high-temperature and high-pressure refrigerant coming out of the compressor into liquid refrigerant when the condensing fan is turned on; the condensing fan is used to blow air to the condenser when it is turned on;

[0033] The expansion valve is connected to the refrigeration module, and is used for heating the refrigeration chamber when the ambient temperature is lower than the set temperature of the refrigeration chamber of the refrigerator, the current temperature of the refrigeration chamber of the refrigerator is lower than the preset first temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, until the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold; the expansion valve is also used for defrosting the refrigeration evaporator of the refrigerator when the refrigerator meets the defrosting condition until the preset defrosting time length is met; the expansion valve is also used for cooling the refrigeration chamber when the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold when the refrigerator does not meet the defrosting condition, until the current temperature of the refrigeration chamber of the refrigerator is lower than the preset first temperature threshold;

[0034] The refrigeration module comprises a refrigeration evaporator and a refrigeration fan, wherein the refrigeration evaporator is connected to the expansion valve, the switching module and the capillary tube; the refrigeration evaporator is used to heat the refrigeration chamber of the refrigerator when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigeration chamber of the refrigerator, the current temperature of the refrigeration chamber is lower than the preset first temperature threshold, and there is a refrigeration demand for the freezer compartment of the refrigerator, until the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold; when the ambient temperature of the environment in which the refrigerator is located is higher than or equal to the set temperature of the refrigeration chamber of the refrigerator, the refrigerator is fully cooled. When the defrosting condition is met and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted until the defrosting time meets the preset defrosting time; when the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator compartment of the refrigerator, and the refrigerator does not meet the defrosting condition, the current temperature of the refrigerator compartment is greater than a preset second temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator compartment of the refrigerator is refrigerated until the current temperature of the refrigerator compartment of the refrigerator is less than the preset first temperature threshold; the refrigeration fan is used to blow air to the refrigeration evaporator when it is turned on;

[0035] The capillary tube is connected to the freezing module and is used to throttle the refrigerant flowing out of the refrigeration module to obtain the throttled refrigerant;

[0036] The freezing module is connected to the switching module and is used to cool the freezing chamber of the refrigerator by using the throttled refrigerant flowing out of the capillary tube;

[0037] The switching module includes at least one switching valve for switching between the refrigerant flowing out of the refrigeration module flowing into the compressor and the refrigerant flowing out of the freezing module flowing into the compressor based on whether there is a refrigeration demand in the freezer compartment of the refrigerator.

[0038] The above-mentioned refrigerator control method, device and refrigerator, through comprehensive consideration of the relationship between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigerator compartment, as well as the relationship between the current temperature of the refrigerator compartment and a preset first temperature threshold, determine whether it is necessary to heat the refrigerator compartment. When it is necessary to heat the refrigerator compartment, when there is a cooling demand in the freezer compartment of the refrigerator, the refrigerator compartment is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator. There is no need to change the connection relationship and structure inside the refrigerator, only the opening of the expansion valve, the condensing fan and the refrigerating fan need to be adjusted. The method is simple and easy to operate, and solves the problem of the existing refrigerator control method that the refrigerator compartment cannot be heated, and the food in the refrigerator compartment is frozen when the room temperature is too low.

[0039] 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

[0040] 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:

[0041] Figure 1 A hardware structure block diagram of a terminal of a refrigerator control method provided in an embodiment of the present application;

[0042] Figure 2 A flowchart of a refrigerator control method provided by an embodiment of the present application;

[0043] Figure 3 A flowchart of a refrigerator control method provided in a preferred embodiment of the present application;

[0044] Figure 4 A structural diagram of a temperature control system of a refrigerator provided in one embodiment of the present application. DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] 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 FIG. 1 is a hardware structure block diagram of a terminal of the refrigerator 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 for illustration only 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.

[0048] 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 control method of the refrigerator 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 can 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.

[0049] 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.

[0050] In this embodiment, a refrigerator control method is provided. Figure 2 is a flow chart of the control method of the refrigerator of this embodiment. Figure 2 As shown, the process includes the following steps:

[0051] Step S210, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's cold storage chamber, and the current temperature of the cold storage chamber is lower than the preset first temperature threshold, when there is a cooling demand in the freezer compartment of the refrigerator, the refrigerator's cold storage chamber is heated by controlling the opening of the refrigerator's expansion valve, the condensing fan and the refrigeration fan until the current temperature of the refrigerator's cold storage chamber is higher than the preset second temperature threshold; the preset first temperature threshold is the preset start-up temperature for heating the cold storage chamber; the preset second temperature threshold is the preset shut-down temperature for heating the cold storage chamber; the preset first temperature threshold is lower than the set temperature of the cold storage chamber; the preset second temperature threshold is higher than the set temperature of the cold storage chamber.

[0052] The set temperature of the refrigerator compartment of the above-mentioned refrigerator can be the temperature that needs to be maintained in the refrigerator compartment, which is preset by the user according to actual needs by adjusting the temperature controller and the gear switch on the refrigerator. The set temperature of the refrigerator compartment can also be automatically set or generated by the intelligent temperature control system of the refrigerator according to the preset temperature range of the refrigerator compartment and other parameters preset by the user. By presetting the temperature of the refrigerator compartment, the temperature of the refrigerator compartment is kept near the set temperature, so as to achieve the preservation of food in the refrigerator compartment. In general, in order to ensure the freshness, taste and safety of the food in the refrigerator compartment, the preset temperature of the refrigerator compartment can be adjusted according to the type of food stored in the refrigerator compartment and the ambient temperature of the environment in which the refrigerator is located. For example, in summer, since the room temperature of the refrigerator is high, in order to keep the food fresh, the set temperature of the refrigerator's refrigerator compartment can be set to a lower value; in winter, since the room temperature of the refrigerator is low, the set temperature of the refrigerator's refrigerator compartment can be set to a higher value; for foods that need to be stored for a long time or are easily spoiled at high temperatures, such as meat and seafood, the set temperature of the refrigerator's refrigerator compartment can be set to a lower value; for foods that need to be stored for a short time or that are affected by low temperatures, such as vegetables and fruits, the set temperature of the refrigerator's refrigerator compartment can be set to a higher value. Generally, the set temperature of the refrigerator compartment is set between 0℃ and 8℃.

[0053] In some cases, when the ambient temperature of the environment in which the refrigerator is located is low, if the current temperature of the refrigerator's cold storage room is also low, the cold storage room may be too low and the food in the cold storage room may be frozen. In this case, the cold storage room of the refrigerator needs to be heated. Specifically, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's cold storage room, it can be determined that the ambient temperature of the refrigerator is low at this time, and the refrigerator may have a heating demand. When the current temperature of the cold storage room is lower than the preset first temperature threshold, it can be determined that the refrigerator needs to be heated at this time. However, if there is no cooling demand in the refrigerator's freezer, the compressor does not work at this time, and it is necessary to wait for the refrigerator's freezer to have a cooling demand before heating the refrigerator's cold storage room. Because the above-mentioned preset first temperature threshold is a further judgment on whether the cold storage room currently needs to be heated, therefore, the preset first temperature threshold is lower than the set temperature of the cold storage room. The above-mentioned preset first temperature threshold can be a preset start-up temperature for heating the cold storage room. It should be noted that in order to simplify the calculation logic, the temperature value (shutdown temperature) for stopping cooling when the cold storage room is refrigerated can be used as the preset first temperature threshold.

[0054] In this step, the preset second temperature threshold may be the shutdown temperature of the refrigerator compartment heating. To simplify the calculation logic, the startup temperature of the refrigerator compartment cooling may be used as the preset second temperature threshold.

[0055] In the above step S210, through comprehensive consideration of the relationship between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigerator compartment, as well as the relationship between the current temperature of the refrigerator compartment and a preset first temperature threshold, it is determined whether it is necessary to heat the refrigerator compartment. When it is necessary to heat the refrigerator compartment and when there is a cooling demand in the freezer compartment of the refrigerator, the refrigerator compartment is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator. There is no need to change the internal connection relationship and structure of the refrigerator. Only the opening of the expansion valve, the condensing fan and the refrigerating fan need to be adjusted. This is simple and easy to operate, and solves the problem of food freezing in the refrigerator compartment when the room temperature is too low due to the existing refrigerator control method because the refrigerator compartment cannot be heated.

[0056] In one embodiment, the above step S210, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's refrigerating chamber, and the current temperature of the refrigerating chamber is lower than a preset first temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerating chamber of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerating chamber of the refrigerator is higher than a preset second temperature threshold, includes the following steps:

[0057] Step S212, when the ambient temperature of the refrigerator's environment is lower than the set temperature of the refrigerator's cold storage compartment, and the current temperature of the cold storage compartment is lower than the preset first temperature threshold, when there is a cooling demand in the refrigerator's freezer, the refrigerator's cold storage compartment is heated by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigeration fan to be turned on, until the current temperature of the refrigerator's cold storage compartment is higher than the preset second temperature threshold.

[0058] When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's refrigeration chamber, the main control module of the refrigerator will generate a heating instruction and send the generated heating instruction to the refrigerator's refrigeration control module, and the refrigeration control module will control the refrigeration chamber to enter the heating mode. In the heating mode, the refrigeration control module of the refrigerator will determine whether the current temperature of the refrigeration chamber is lower than the preset first temperature threshold. When the current temperature of the refrigeration chamber is not lower than the preset first temperature threshold, the current temperature of the refrigeration chamber is periodically refreshed according to the preset first time period, and it is re-determined whether the current temperature of the refrigeration chamber is lower than the preset first temperature threshold. In this process, if it is determined that the current temperature of the refrigerator compartment is greater than the set temperature of the refrigerator compartment, the main control module of the refrigerator will generate a refrigeration instruction and send the refrigeration instruction to the refrigerator refrigeration control module, and the refrigeration control module will control the refrigerator compartment to enter the refrigeration mode; in this process, if the current temperature of the refrigerator compartment is less than the preset first temperature threshold, the refrigeration control module will determine whether the freezer compartment has a refrigeration demand. When the freezer compartment has no refrigeration demand, the current temperature of the refrigerator compartment is periodically refreshed according to the preset second time period, and re-determined whether the current temperature of the refrigerator compartment is less than the preset first temperature threshold; when the freezer compartment has a refrigeration demand, the expansion valve is fully opened, the condensing fan is turned off, and the refrigeration fan is turned on to heat the refrigerator compartment until the current temperature of the refrigerator compartment is greater than the preset second temperature threshold. The above-mentioned preset first time period can be specifically set according to specific needs, and this embodiment is not specifically limited here. For example, the preset first time period can be set to 1 minute. The above-mentioned preset second time period can be specifically set according to specific needs, and this embodiment is not specifically limited here. It should be noted that there is no necessary connection between the above-mentioned preset first time period and the preset second time period.

[0059] The refrigeration control module of the refrigerator is used to control the refrigeration chamber to enter the heating mode in response to the received heating instruction, and to control the refrigeration chamber to enter the refrigeration mode in response to the received refrigeration instruction. When the refrigeration chamber enters the refrigeration mode, the refrigeration control module determines whether the current temperature of the refrigeration chamber is greater than the preset second temperature threshold. When the current temperature of the refrigeration chamber is not greater than the preset second temperature threshold, the current temperature of the refrigeration chamber is periodically refreshed according to the preset first time period, and re-determines whether the current temperature of the refrigeration chamber is greater than the preset second temperature threshold (in this process, if the current temperature of the refrigeration chamber is less than the set temperature of the refrigeration chamber of the refrigerator, the main control module of the refrigerator generates a heating instruction and sends the heating instruction to the refrigeration control module, so that the refrigeration chamber of the refrigerator enters the heating mode); when the current temperature of the refrigeration chamber is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigeration chamber of the refrigerator is refrigerated by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the current temperature of the refrigeration chamber of the refrigerator is less than the preset first temperature threshold.

[0060] The above expansion valve is an expansion valve installed between the condenser of the refrigerator and the cold storage room of the refrigerator. Generally, the expansion valve has a throttling and pressure-reducing function, which can make the liquid refrigerant flowing out of the condenser become low-temperature and low-pressure wet steam after throttling through the throttling port in the expansion valve; it can control the flow rate of the refrigerant to ensure that the liquid refrigerant entering the cold storage evaporator (evaporator of the cold storage room) is completely evaporated into gas in the evaporator, thereby absorbing heat and reducing the temperature of the cold storage room in the refrigerator. The above refrigerant can be one of the refrigerants suitable for refrigerators, such as R134a, R502, R407C, R410A, etc.

[0061] In this embodiment, when the expansion valve is fully opened, the throttling effect of the expansion valve is canceled, and the condensing fan is turned off and the refrigeration fan is turned on. When the condenser receives the high-temperature and high-pressure refrigerant from the compressor, the refrigerant in the condenser cannot dissipate heat because the condensing fan is turned off, so that the refrigerant flowing out of the condenser is still a high-temperature refrigerant, and the refrigerant flowing into the expansion valve is also a high-temperature refrigerant. The expansion valve does not have a throttling effect and only serves as a passage. Therefore, the refrigerant flowing out of the expansion valve is also a high-temperature refrigerant, and the refrigerant flowing into the refrigeration evaporator from the expansion valve is also a high-temperature refrigerant. At this time, by turning on the refrigeration fan, the heat in the high-temperature refrigerant in the refrigeration evaporator is dissipated into the refrigeration room, thereby heating the refrigeration room.

[0062] The condensing fan may be a fan that transfers the heat in the condenser to the external environment. The refrigerating fan may be a fan that transfers the heat in the refrigerating evaporator to the refrigerating chamber when the refrigerating chamber is in heating mode, or a fan that blows the cold air generated by the heat absorbed by the refrigerating evaporator into the refrigerating chamber when the refrigerating chamber is in cooling mode. The refrigerating evaporator is an evaporator in the refrigerating chamber, which is used to absorb the heat in the refrigerating chamber when the refrigerating chamber is in cooling mode, so that the refrigerant changes from liquid to gas during the evaporation process, thereby achieving a cooling effect in the refrigerating chamber; and is used to dissipate heat to the refrigerating chamber when the refrigerating chamber is in heating mode, thereby achieving a heating effect in the refrigerating chamber.

[0063] Specifically, in one embodiment, before step S210, the following steps are included:

[0064] Step S202, obtaining the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigeration chamber.

[0065] The above-mentioned acquisition of the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's cold storage compartment can be carried out by using a temperature sensor installed in the refrigerator's environment, a black ball temperature method, a wet bulb temperature method, a dry bulb temperature method, etc. to obtain the ambient temperature of the environment in which the refrigerator is located, and the set temperature of the refrigerator's cold storage compartment can be determined by reading the set temperature of the refrigerator's cold storage compartment of the refrigerator's main control module.

[0066] Step S204, determining the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment.

[0067] In the above steps S202 to S204, the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigerator compartment are obtained, and the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigerator compartment is determined. Based on the determination of the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigerator compartment, the main control module of the refrigerator generates a heating instruction or a cooling instruction based on the determination result, so that the refrigerator compartment enters the heating mode or the cooling mode, so as to heat or cool the refrigerator compartment according to actual needs.

[0068] In addition, in one embodiment, after step S210, the following steps are included:

[0069] Step S220, turning off the refrigeration fan.

[0070] When heating the refrigerator's cold storage compartment, after the current temperature of the refrigerator's cold storage compartment is greater than the preset second temperature threshold, there is no need to continue heating the refrigerator's cold storage compartment, and the refrigeration fan needs to be turned off so that the heat in the refrigeration evaporator is no longer blown into the cold storage compartment.

[0071] In one embodiment, the refrigerator control method further includes:

[0072] Step S230, determining whether there is a refrigeration demand in the freezer compartment of the refrigerator.

[0073] The above judgment of whether the freezer compartment of the refrigerator has a refrigeration demand may be performed by obtaining the current temperature of the freezer compartment of the refrigerator and judging whether the current temperature of the freezer compartment of the refrigerator is greater than the preset refrigeration opening temperature of the freezer compartment. When the current temperature of the freezer compartment of the refrigerator is greater than the preset refrigeration opening temperature of the freezer compartment, it is judged that the freezer compartment of the refrigerator has a refrigeration demand. When the current temperature of the freezer compartment of the refrigerator is less than or equal to the preset refrigeration opening temperature of the freezer compartment, it is judged that the freezer compartment of the refrigerator has no refrigeration demand. It should be noted that the above preset refrigeration opening temperature of the freezer compartment may be a threshold value of the temperature required to refrigerate the freezer compartment set in advance by the user. When the current temperature of the freezer compartment of the refrigerator is greater than the preset refrigeration opening temperature of the freezer compartment, the compressor is turned on to refrigerate the freezer compartment of the refrigerator. Otherwise, the compressor is turned off and the freezer compartment of the refrigerator is not refrigerated.

[0074] Step S240, when there is a refrigeration demand in the freezer compartment of the refrigerator, turn on the compressor of the refrigerator.

[0075] When there is a need for cooling in the freezer compartment of the refrigerator, the refrigerator compressor is turned on to allow the refrigerant to enter the capillary tube between the refrigerating chamber and the freezing chamber through the refrigerating evaporator, and throttle at the capillary tube, so that the low-temperature refrigerant flows into the freezing evaporator of the freezing chamber to cool the freezing chamber.

[0076] Step S250, when there is no refrigeration demand in the freezer compartment of the refrigerator, turn off the compressor of the refrigerator.

[0077] When there is no cooling demand in the freezer compartment of the refrigerator, turn off the compressor of the refrigerator so that the refrigerator does not cool the freezer compartment. It should be noted that, in general, whether the compressor is turned on is determined based on whether there is a cooling demand in the freezer compartment. If the refrigerator compartment is in cooling mode, when there is a cooling demand in the freezer compartment of the refrigerator, turn on the compressor, and cool the refrigerator compartment of the refrigerator by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan; if the refrigerator compartment is in heating mode, when there is a cooling demand in the freezer compartment of the refrigerator, turn on the compressor, and heat the refrigerator compartment of the refrigerator by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan.

[0078] In the above steps S230 to S250, whether the freezer compartment of the refrigerator needs refrigeration is determined, and whether the compressor is running to refrigerate the freezer compartment or not is controlled. Whether the freezer compartment needs refrigeration is given priority, and the refrigerator compartment is heated or cooled only when the freezer compartment needs refrigeration.

[0079] In addition, in one embodiment, the refrigerator control method further includes:

[0080] Step S260, when the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator's refrigeration chamber, determine whether the refrigerator meets the defrosting conditions.

[0081] When the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator's refrigeration chamber, the refrigerator's refrigeration chamber will be in refrigeration mode. In this case, the refrigerator needs to be defrosted periodically to ensure the performance of the refrigerator. The above-mentioned judgment of whether the refrigerator meets the defrosting condition can be determined by judging whether the time interval between this time and the last defrosting time is greater than or equal to the preset defrosting cycle. When the time interval between this time and the last defrosting time is greater than or equal to the preset defrosting cycle, the defrosting condition is met. When the time interval between this time and the last defrosting time is less than the preset defrosting cycle, the defrosting condition is not met.

[0082] Step S270, when the refrigerator meets the defrosting conditions and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator evaporator is defrosted by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the defrosting time meets the preset defrosting time.

[0083] Among them, the above-mentioned defrosting of the refrigerator evaporator by controlling the opening of the expansion valve, the condensing fan, and the refrigerating fan can be performed by controlling the expansion valve to be fully opened, the condensing fan to be closed, and the refrigerating fan to be closed to defrost the refrigerating evaporator of the refrigerator. The expansion valve is fully opened and the condensing fan is closed, so that after the condenser receives the high-temperature and high-pressure refrigerant, the heat is not dissipated through the condensing fan, but directly flows into the expansion valve. The expansion valve does not have a throttling effect, but only serves as a passage to flow out the high-temperature refrigerant. The high-temperature refrigerant enters the refrigerating evaporator of the refrigerating chamber to defrost the refrigerating evaporator. At this time, the refrigerating fan is closed, and the heat will not be blown into the refrigerating chamber, so that the defrosting can be maintained without affecting the refrigerating effect of the refrigerating chamber.

[0084] Step S280, when the refrigerator does not meet the defrost conditions and the current temperature of the refrigerator compartment is greater than the preset second temperature threshold, when there is a cooling demand in the freezer compartment of the refrigerator, the refrigerator compartment is cooled by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the current temperature of the refrigerator compartment is lower than the preset first temperature threshold.

[0085] The refrigerator compartment is cooled by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan. The opening of the expansion valve may be adjusted according to the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerating compartment of the refrigerator, and the refrigerating fan and the condensing fan may be turned on to cool the refrigerating compartment of the refrigerator.

[0086] The above-mentioned adjustment of the opening of the expansion valve according to the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment may be to adjust the opening X of the expansion valve according to the following opening calculation formula:

[0087]

[0088] Among them, T w is the ambient temperature of the refrigerator, T s Set the temperature for the refrigerator compartment.

[0089] During the refrigeration process of the refrigerator's cold storage room, the condensing fan is turned on to blow the heat of the high-temperature and high-pressure refrigerant in the condenser into the external environment, thereby cooling the high-temperature and high-pressure refrigerant in the condenser. The cooled refrigerant then enters the expansion valve for throttling and pressure reduction, so that the refrigerant becomes a low-pressure liquid or a low-pressure mixed state at the expansion valve outlet. The refrigerant flowing out of the expansion valve evaporates in the refrigeration evaporator, absorbs the surrounding heat during evaporation, and reduces the air temperature near the refrigeration evaporator. The refrigeration fan is turned on and blows air at a low temperature into the cold storage room to cool the cold storage room.

[0090] In the above steps S260 to S280, when the ambient temperature of the refrigerator is greater than or equal to the set temperature of the refrigerator's refrigerator compartment, the refrigerator compartment is in refrigeration mode, and whether the refrigerator needs to be defrosted is monitored. During defrosting, the opening of the expansion valve, the condensing fan, and the refrigeration fan are controlled to defrost the refrigerator evaporator. When defrosting is not required but the refrigeration demand of the refrigerator compartment is met, the opening of the expansion valve, the condensing fan, and the refrigeration fan are controlled to refrigerate the refrigerator compartment, thereby achieving refrigeration and defrosting of the refrigerator compartment.

[0091] Further, in one embodiment, based on step S270, when the refrigerator meets the defrosting condition and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the defrosting time meets the preset defrosting time, including:

[0092] Step S272, when the refrigerator meets the defrosting conditions and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator evaporator is defrosted by controlling the expansion valve to be fully open, the condensing fan to be turned off, and the refrigeration fan to be turned off until the defrosting time meets the preset defrosting time length.

[0093] It should be noted that when the freezer compartment of the refrigerator has a demand for refrigeration, the compressor of the refrigerator will be turned on. Only on this basis can the refrigerator compartment of the refrigerator be defrosted. If only the defrosting conditions are met and the refrigerator compartment of the refrigerator has no demand for refrigeration, you need to wait until the freezer compartment of the refrigerator has a demand for refrigeration before defrosting.

[0094] In one embodiment, based on step S280, when the refrigerator does not meet the defrosting condition and the current temperature of the refrigerator compartment is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment is refrigerated by controlling the opening of the expansion valve, the condensing fan, and the refrigerating fan until the current temperature of the refrigerator compartment is less than the preset first temperature threshold, including:

[0095] Step S282, when the refrigerator does not meet the defrost conditions and the current temperature of the refrigerator compartment is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, according to the difference between the ambient temperature of the refrigerator environment and the set temperature of the refrigerator compartment, the opening of the expansion valve is adjusted, and the condensing fan and the refrigerating fan are controlled to be turned on to cool the refrigerator compartment of the refrigerator until the current temperature of the refrigerator compartment is lower than the preset first temperature threshold, and then the refrigerating fan is turned off.

[0096] It should be noted that when the freezer compartment of the refrigerator has a cooling demand, the compressor of the refrigerator will be turned on. On this basis, the refrigerator's refrigerator compartment can be refrigerated. If only the refrigerator compartment meets the refrigeration conditions and there is no cooling demand for the refrigerator compartment, you need to wait until the freezer compartment of the refrigerator has a cooling demand before refrigerating the refrigerator compartment.

[0097] The present embodiment is described and illustrated below through preferred embodiments.

[0098] Figure 3 1 is a flow chart of a refrigerator control method provided by a preferred embodiment of the present application. Figure 3 As shown, the control method of the refrigerator includes the following steps:

[0099] Step S301, obtaining the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment;

[0100] Step S302, determining the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment;

[0101] Step S303, when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment, and the current temperature of the refrigerator compartment is lower than the preset first temperature threshold, in the case that there is a cooling demand for the freezer compartment of the refrigerator, the refrigerator compartment is heated by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigerating fan to be turned on, until the current temperature of the refrigerator compartment is higher than the preset second temperature threshold;

[0102] Step S304, when the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator's refrigeration chamber, determining whether the refrigerator meets the defrosting condition;

[0103] Step S305, when the refrigerator meets the defrosting conditions and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator evaporator is defrosted by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigeration fan to be turned off, until the defrosting time meets the preset defrosting time length;

[0104] Step S306, when the refrigerator does not meet the defrost conditions and the current temperature of the refrigerator compartment is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, according to the difference between the ambient temperature of the refrigerator environment and the set temperature of the refrigerator compartment, the opening of the expansion valve is adjusted, and the condensing fan and the refrigerating fan are controlled to be turned on to cool the refrigerator compartment of the refrigerator until the current temperature of the refrigerator compartment is lower than the preset first temperature threshold, and then the refrigerating fan is turned off.

[0105] In the above steps S301 to S306, through comprehensive consideration of the relationship between the ambient temperature of the refrigerator's environment and the set temperature of the refrigerator's refrigerator compartment, as well as the relationship between the current temperature of the refrigerator compartment and a preset first temperature threshold, it is determined whether the refrigerator compartment needs to be heated or cooled. When the refrigerator compartment needs to be heated and when the freezer compartment of the refrigerator needs to be cooled, the refrigerator compartment is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator. There is no need to change the internal connection relationship and structure of the refrigerator. Only the opening of the expansion valve, the condensing fan and the refrigerating fan need to be adjusted. This is simple and easy, and solves the problem of food freezing in the refrigerator compartment when the room temperature is too low due to the existing refrigerator control method, because the refrigerator compartment cannot be heated.

[0106] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0107] Based on the same inventive concept, a refrigerator control device is also provided in this embodiment, which is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. The terms "module", "unit", "subunit" and the like used below can implement a combination of software and / or hardware of predetermined functions. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0108] In one embodiment, the refrigerator control device provided in the embodiment of the present application includes:

[0109] The heating module 42 is used for heating the refrigerator compartment of the refrigerator by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator and the current temperature of the refrigerator compartment is lower than the preset first temperature threshold, and when there is a cooling demand in the freezer compartment of the refrigerator, until the current temperature of the refrigerator compartment of the refrigerator is higher than the preset second temperature threshold; the preset first temperature threshold is the preset start-up temperature for heating the refrigerator compartment; the preset second temperature threshold is the preset shut-down temperature for heating the refrigerator compartment; the preset first temperature threshold is lower than the set temperature of the refrigerator compartment; the preset second temperature threshold is higher than the set temperature of the refrigerator compartment.

[0110] The control device of the above-mentioned refrigerator comprehensively considers the relationship between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator's refrigerator compartment, as well as the relationship between the current temperature of the refrigerator compartment and a preset first temperature threshold, to determine whether it is necessary to heat the refrigerator compartment. When it is necessary to heat the refrigerator compartment and when there is a cooling demand in the freezer compartment of the refrigerator, the refrigerator compartment is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator. There is no need to change the internal connection relationship and structure of the refrigerator. Only the opening of the expansion valve, the condensing fan and the refrigerating fan need to be adjusted. The method is simple and easy to operate, and solves the problem of the existing refrigerator control method that the refrigerator compartment cannot be heated, and the food in the refrigerator compartment is frozen when the room temperature is too low.

[0111] It should be noted that the above modules can be functional modules or program modules, and can be implemented by software or hardware. For modules implemented by hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0112] In one embodiment, a refrigerator is provided, including a refrigerating chamber, a freezing chamber, and a temperature control system. The temperature control system is used to implement any one of the refrigerator control methods in the above embodiments; Figure 4: is a structural diagram of the temperature control system of the refrigerator of this embodiment. Figure 4 As shown, the temperature control system of the refrigerator includes: a compressor 41, a condensing module 42, an expansion valve 43, a refrigerating module 44, a capillary tube 45, a switching module 46 and a freezing module 47;

[0113] The compressor 41 is connected to the condenser module and the switching module 46, and is used to compress the low-temperature and low-pressure refrigerant received from the switching module 46 into a high-temperature and high-pressure refrigerant when there is a refrigeration demand in the freezer compartment of the refrigerator;

[0114] The condensing module 42 includes a condenser and a condensing fan; the condenser is connected to the compressor 41 and the expansion valve 43 respectively, and is used to cool the high-temperature and high-pressure refrigerant coming out of the compressor 41 into liquid refrigerant when the condensing fan is turned on; the condensing fan is used to blow air to the condenser when it is turned on;

[0115] The expansion valve 43 is connected to the refrigeration module 44 and is used for heating the refrigeration chamber when the ambient temperature is lower than the set temperature of the refrigeration chamber of the refrigerator, the current temperature of the refrigeration chamber of the refrigerator is lower than the preset first temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, until the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold; the expansion valve 43 is also used for defrosting the refrigeration evaporator of the refrigerator when the refrigerator meets the defrosting condition until the preset defrosting time length is met; the expansion valve 43 is also used for cooling the refrigeration chamber when the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold when the refrigerator does not meet the defrosting condition, until the current temperature of the refrigeration chamber of the refrigerator is lower than the preset first temperature threshold;

[0116] The refrigeration module 44 includes a refrigeration evaporator and a refrigeration fan. The refrigeration evaporator is connected to the expansion valve 43, the switching module 46 and the capillary tube 45. The refrigeration evaporator is used to heat the refrigeration chamber of the refrigerator when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigeration chamber of the refrigerator, the current temperature of the refrigeration chamber is lower than the preset first temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, until the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold; when the ambient temperature of the environment in which the refrigerator is located is higher than or equal to the set temperature of the refrigeration chamber of the refrigerator, the refrigerator meets the refrigeration demand. When the refrigerator meets the defrosting condition and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator evaporator is defrosted until the defrosting time meets the preset defrosting time; when the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator's cold storage compartment, the refrigerator does not meet the defrosting condition, the current temperature of the cold storage compartment is greater than the preset second temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator cold storage compartment is refrigerated until the current temperature of the refrigerator cold storage compartment is less than the preset first temperature threshold; a refrigeration fan is used to blow air to the refrigeration evaporator when it is turned on;

[0117] The capillary tube 45 is connected to the freezing module 47 and is used to throttle the refrigerant flowing out of the refrigeration module 44 to obtain the throttled refrigerant;

[0118] A freezing module 47, connected to the switching module 46, is used to refrigerate the freezer compartment of the refrigerator using the throttled refrigerant flowing out of the capillary tube 45;

[0119] The switching module 46 includes at least one switching valve for switching between the refrigerant flowing out of the refrigeration module 44 flowing into the compressor 41 and the refrigerant flowing out of the freezing module 47 flowing into the compressor 41 based on whether there is a refrigeration demand in the freezer compartment of the refrigerator.

[0120] The freezing module 47 includes a freezing evaporator and a freezing fan. The freezing evaporator absorbs heat in the freezing chamber through evaporation of the refrigerant to reduce the indoor temperature. The freezing fan is used to circulate air inside the freezing chamber to ensure uniform distribution of cold air, avoid uneven temperature, and improve freezing efficiency. In addition, the forced convection of the freezing fan can accelerate the transfer of heat in the freezing chamber, so that the refrigerant absorbs heat faster and improves the refrigeration speed.

[0121] Under normal circumstances, the switching valve of the switching module 46 connects the compressor 41 with the refrigeration evaporator of the refrigeration module 47, and the refrigerant flowing out of the refrigeration evaporator is compressed by the compressor 41 to be a high-temperature and high-pressure refrigerant.

[0122] When the main control module determines that the refrigerator compartment is in the cooling mode, when the compressor 41 is turned on, the condensing fan is turned on at this time, and the high-temperature and high-pressure refrigerant flowing out of the compressor 41 flows into the condenser. Under the action of the condensing fan, heat is dissipated, and the refrigerant in the condenser is cooled to obtain a liquid refrigerant. The cooled refrigerant flows into the expansion valve 43. At this time, the expansion valve 43 has a throttling effect, so that the refrigerant becomes a low-pressure liquid or a low-pressure mixed state (liquid-gas mixture) at the outlet of the expansion valve 43. The refrigerant flowing out of the expansion valve 43 is evaporated in the cold storage evaporator. When the evaporation occurs, the surrounding heat is absorbed, so that the air temperature near the refrigeration evaporator is reduced. The refrigeration fan is turned on, and the refrigeration fan blows air to blow low-temperature air into the refrigeration room to cool the refrigeration room. At this time, the refrigerant is divided into liquid and gaseous states. The gaseous refrigerant can return to the compressor 41 along the expansion valve 43 and the condenser. The liquid refrigerant enters the capillary tube 45. After throttling and reducing the pressure of the capillary tube 45, it will become a low-temperature and low-pressure refrigerant. After the low-temperature and low-pressure refrigerant enters the freezing evaporator, the freezing fan is turned on to blow cold air into the freezing room to cool the freezing room. The refrigerant in the freezing room returns to the compressor 41 through the switching valve.

[0123] When the main control module determines that the refrigerator compartment is in the heating mode, the condensing fan is turned off at this time, and the high-temperature and high-pressure refrigerant flowing out of the compressor 41 flows into the condenser. When the condensing fan is turned off, the heat dissipation is limited, and the refrigerant flowing into the expansion valve 43 is still a high-temperature and high-pressure refrigerant. At this time, the expansion valve 43 is fully opened and has no throttling effect. The refrigerant flowing out of the expansion valve 43 is still a high-temperature refrigerant. After the high-temperature refrigerant flows into the refrigeration evaporator, when the refrigeration fan is turned on, the high-temperature air is blown into the refrigeration compartment to dissipate heat in the refrigeration compartment. At this time, the refrigerant is divided into liquid and gaseous. The gaseous refrigerant can return to the compressor 41 along the expansion valve 43 and the condenser. The liquid refrigerant enters the capillary 45. After throttling and reducing the pressure of the capillary 45, it will become a low-temperature and low-pressure refrigerant. After the low-temperature and low-pressure refrigerant enters the freezing evaporator, the freezing fan is turned on to blow cold air into the freezing compartment to cool the freezing compartment. The refrigerant in the freezing compartment returns to the compressor 41 through the switching valve.

[0124] In some cases, the switching valve of the switching module 46 connects the compressor 41 with the refrigeration evaporator of the refrigeration module 44, and the refrigerant flowing out of the refrigeration evaporator is compressed by the compressor 41 to compress the refrigerant into a high-temperature and high-pressure refrigerant. In some cases, when the refrigerant in the refrigeration evaporator of the refrigerator does not need to enter the freezing module 47, the refrigerant in the refrigeration evaporator needs to flow directly into the compressor 41 through the switching valve.

[0125] Under normal circumstances, the compressor 41 is turned on only when there is a refrigeration demand in the freezer compartment. However, in order to ensure the normal operation of the refrigerator, when the freezer compartment is abnormal or in special circumstances, the compressor 41 can also be turned on when there is a refrigeration demand in the refrigerator compartment.

[0126] 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.

[0127] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] The above-described 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 the present application. 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 protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A refrigerator control method, characterized in that: The method comprises: When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's cold storage chamber, and the current temperature of the cold storage chamber is lower than a preset first temperature threshold, when there is a cooling demand in the freezer chamber of the refrigerator, the cold storage chamber of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigeration fan of the refrigerator until the current temperature of the cold storage chamber of the refrigerator is higher than a preset second temperature threshold; the preset first temperature threshold is a preset start-up temperature for heating the cold storage chamber; the preset second temperature threshold is a preset shut-down temperature for heating the cold storage chamber; the preset first temperature threshold is lower than the set temperature of the cold storage chamber; the preset second temperature threshold is higher than the set temperature of the cold storage chamber.

2. The refrigerator control method according to claim 1, characterized in that: When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator, and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold, including: When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator's cold storage chamber, and the current temperature of the cold storage chamber is lower than the preset first temperature threshold, when there is a demand for cooling in the freezer chamber of the refrigerator, the refrigerator's cold storage chamber is heated by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigeration fan to be turned on until the current temperature of the refrigerator's cold storage chamber is higher than the preset second temperature threshold.

3. The refrigerator control method according to claim 1, characterized in that: When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator, and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, in the case that there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold, including: Acquire the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment of the refrigerator; Determine the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the refrigerator compartment of the refrigerator.

4. The refrigerator control method according to claim 2, characterized in that: When the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator, and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerator compartment of the refrigerator is heated by controlling the opening of the expansion valve, the condensing fan and the refrigerating fan of the refrigerator until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold, including: The refrigeration fan is turned off.

5. The refrigerator control method according to claim 1, characterized in that: Also includes: Determining whether there is a refrigeration demand for the freezer compartment of the refrigerator; When there is a refrigeration demand in the freezer compartment of the refrigerator, turning on the compressor of the refrigerator; When there is no refrigeration demand in the freezer compartment of the refrigerator, the compressor of the refrigerator is turned off.

6. The refrigerator control method according to claim 1, characterized in that: Also includes: When the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator compartment, determining whether the refrigerator meets the defrosting condition; When the refrigerator meets the defrosting condition and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the defrosting time meets the preset defrosting time length; When the refrigerator does not meet the defrosting conditions and the current temperature of the refrigerator compartment is greater than the preset second temperature threshold, when there is a cooling demand in the freezer compartment of the refrigerator, the refrigerator compartment is cooled by controlling the opening of the expansion valve, the condensing fan and the refrigeration fan until the current temperature of the refrigerator compartment is lower than the preset first temperature threshold.

7. The refrigerator control method according to claim 6, characterized in that: When the refrigerator meets the defrosting condition and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the opening of the expansion valve, the condensing fan, and the refrigeration fan until the defrosting time meets the preset defrosting time, including: When the refrigerator meets the defrosting conditions and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted by controlling the expansion valve to be fully opened, the condensing fan to be turned off, and the refrigeration fan to be turned off until the defrosting time meets the preset defrosting time length.

8. The refrigerator control method according to claim 6, characterized in that: When the refrigerator does not meet the defrosting condition and the current temperature of the refrigerating chamber is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the refrigerating chamber of the refrigerator is refrigerated by controlling the opening of the expansion valve, the condensing fan, and the refrigerating fan until the current temperature of the refrigerating chamber of the refrigerator is less than the preset first temperature threshold, including: When the refrigerator does not meet the defrost conditions and the current temperature of the cold storage chamber is greater than the preset second temperature threshold, when there is a refrigeration demand in the freezer compartment of the refrigerator, the opening of the expansion valve is adjusted according to the difference between the ambient temperature of the environment in which the refrigerator is located and the set temperature of the cold storage chamber, and the condensing fan and the refrigerating fan are controlled to be turned on to cool the cold storage chamber of the refrigerator until the current temperature of the cold storage chamber of the refrigerator is lower than the preset first temperature threshold, and then the refrigerating fan is turned off.

9. A control device for a refrigerator, characterized in that: The device comprises: A heating module is used for heating the refrigerator compartment of the refrigerator by controlling the opening of the expansion valve, condensing fan and refrigerating fan of the refrigerator when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigerator compartment of the refrigerator and the current temperature of the refrigerator compartment is lower than a preset first temperature threshold, and when there is a cooling demand in the freezer compartment of the refrigerator, until the current temperature of the refrigerator compartment of the refrigerator is higher than a preset second temperature threshold; the preset first temperature threshold is a preset start-up temperature for heating the refrigerator compartment; the preset second temperature threshold is a preset shut-down temperature for heating the refrigerator compartment; the preset first temperature threshold is lower than the set temperature of the refrigerator compartment; the preset second temperature threshold is higher than the set temperature of the refrigerator compartment.

10. A refrigerator comprising a refrigerating chamber, a freezing chamber and a temperature control system, characterized in that: The temperature control system is used to implement the control method of the refrigerator according to any one of claims 1 to 8; the temperature control system comprises: a compressor, a condensing module, an expansion valve, a refrigeration module, a capillary tube, a switching module and a freezing module; The compressor is connected to the condenser module and the switching module, and is used to compress the low-temperature and low-pressure refrigerant received from the switching module into a high-temperature and high-pressure refrigerant when there is a refrigeration demand in the freezer compartment of the refrigerator; The condensing module comprises a condenser and a condensing fan; the condenser is connected to the compressor and the expansion valve respectively, and is used to cool the high-temperature and high-pressure refrigerant coming out of the compressor into liquid refrigerant when the condensing fan is turned on; the condensing fan is used to blow air to the condenser when it is turned on; The expansion valve is connected to the refrigeration module, and is used for heating the refrigeration chamber when the ambient temperature is lower than the set temperature of the refrigeration chamber of the refrigerator, the current temperature of the refrigeration chamber of the refrigerator is lower than the preset first temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, until the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold; the expansion valve is also used for defrosting the refrigeration evaporator of the refrigerator when the refrigerator meets the defrosting condition until the preset defrosting time length is met; the expansion valve is also used for cooling the refrigeration chamber when the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold when the refrigerator does not meet the defrosting condition, until the current temperature of the refrigeration chamber of the refrigerator is lower than the preset first temperature threshold; The refrigeration module comprises a refrigeration evaporator and a refrigeration fan, wherein the refrigeration evaporator is connected to the expansion valve, the switching module and the capillary tube; the refrigeration evaporator is used to heat the refrigeration chamber of the refrigerator when the ambient temperature of the environment in which the refrigerator is located is lower than the set temperature of the refrigeration chamber of the refrigerator, the current temperature of the refrigeration chamber is lower than the preset first temperature threshold, and there is a refrigeration demand for the freezer compartment of the refrigerator, until the current temperature of the refrigeration chamber of the refrigerator is higher than the preset second temperature threshold; when the ambient temperature of the environment in which the refrigerator is located is higher than or equal to the set temperature of the refrigeration chamber of the refrigerator, the refrigerator is fully cooled. When the defrosting condition is met and the freezer compartment of the refrigerator has a refrigeration demand, the refrigeration evaporator of the refrigerator is defrosted until the defrosting time meets the preset defrosting time; when the ambient temperature of the environment in which the refrigerator is located is greater than or equal to the set temperature of the refrigerator compartment of the refrigerator, and the refrigerator does not meet the defrosting condition, the current temperature of the refrigerator compartment is greater than a preset second temperature threshold, and the freezer compartment of the refrigerator has a refrigeration demand, the refrigerator compartment of the refrigerator is refrigerated until the current temperature of the refrigerator compartment of the refrigerator is less than the preset first temperature threshold; the refrigeration fan is used to blow air to the refrigeration evaporator when it is turned on; The capillary tube is connected to the freezing module and is used to throttle the refrigerant flowing out of the refrigeration module to obtain the throttled refrigerant; The freezing module is connected to the switching module and is used to cool the freezing chamber of the refrigerator by using the throttled refrigerant flowing out of the capillary tube; The switching module includes at least one switching valve for switching between the refrigerant flowing out of the refrigeration module flowing into the compressor and the refrigerant flowing out of the freezing module flowing into the compressor based on whether there is a refrigeration demand in the freezer compartment of the refrigerator.

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