Refrigerator, control method, device and computer readable storage medium thereof

Abstract

The application provides a refrigerator and a control method, device and computer readable storage medium thereof. The refrigerator comprises an evaporator, a condenser and a fan for guiding airflow to exchange heat with the condenser. The control method of the refrigerator comprises: acquiring an inlet temperature and an outlet temperature of the evaporator; and determining a target operating state of the fan according to the inlet temperature and the outlet temperature. The application aims to solve the technical problem that the fan speed regulation in the prior art cannot effectively match the current operating state of the evaporator.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a refrigerator and its control method, apparatus and computer-readable storage medium. Background Technology

[0002] A refrigerator is a common household refrigeration appliance. A refrigerator consists of a refrigeration system and a fan; the refrigeration system includes a compressor, evaporator, and condenser; the fan guides airflow to exchange heat with the condenser. In related technologies, the operation of the compressor and fan is controlled according to the compartment temperature. After being adjusted according to the compartment temperature, the fan's state is in a stable state. However, a stable operating state of the fan does not necessarily result in efficient cooling. Summary of the Invention

[0003] This application provides a refrigerator and its control method, device and computer-readable storage medium, aiming to solve the technical problem that the stable operation of the fan in the prior art cannot achieve efficient cooling.

[0004] In a first aspect, this application proposes a control method for a refrigerator, the refrigerator comprising an evaporator, a condenser, and a fan for guiding airflow to exchange heat with the condenser; the control method includes: Obtain the inlet temperature and outlet temperature of the evaporator; The target operating state of the fan is determined based on the inlet temperature and the outlet temperature. Control the fan to switch to the target operating state and continue operating.

[0005] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Obtain the current rotational speed of the fan; When the difference between the outlet temperature and the inlet temperature is greater than a first preset value, a first target speed of the fan is determined based on the current speed, wherein the first target speed is less than the current speed; When the difference between the outlet temperature and the inlet temperature is less than a second preset value, a second target speed of the fan is determined based on the current speed, wherein the second target speed is greater than the current speed; When the difference between the outlet temperature and the inlet temperature is greater than a second preset value and less than the first preset value, a third target speed of the fan is determined based on the current speed, wherein the third target speed is equal to the current speed.

[0006] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: The information of the first liquid refrigerant in the evaporator is determined based on the inlet temperature and the outlet temperature. Based on the first liquid refrigerant information, the target operating state of the fan and / or the operating frequency of the compressor are determined; wherein, the compressor is used to deliver liquid refrigerant to the evaporator.

[0007] Optionally, after determining the target operating state of the fan and / or the operating frequency of the compressor based on the first liquid refrigerant information, the control method further includes: Based on the outlet and inlet temperatures of the evaporator after determining the target operating state of the fan and / or the operating frequency of the compressor, the information of the second liquid refrigerant in the evaporator is determined. Based on the first liquid refrigerant information and the second liquid refrigerant information, it is determined whether the refrigerator's refrigeration system has malfunctioned; the refrigeration system includes the compressor and the evaporator.

[0008] Optionally, the control method further includes: When the difference between the outlet temperature and the inlet temperature is greater than a third preset value, it is determined whether the refrigerator door was opened or the refrigerator compressor was in a stable operating phase before a first preset time period. If the refrigerator door has not been opened before the first preset time period and the refrigerator compressor is in a stable operating phase, then it is determined whether the difference between the outlet temperature and the inlet temperature is greater than the third preset value and should be maintained for the second preset time period; if so, the refrigerator is determined to be faulty.

[0009] Optionally, determining the target operating state of the wind turbine includes: If it is determined that the refrigerator door was opened before the first preset time period or the refrigerator compressor was not in a stable operating phase, then the target operating state of the fan is determined to be either off operation or reduced speed operation.

[0010] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Determine whether the inlet temperature and the outlet temperature are both within their respective set ranges; if so, determine the target operating state of the fan based on the inlet temperature and the outlet temperature.

[0011] Secondly, this application also proposes a control device for a refrigerator, the refrigerator including an evaporator, a condenser, and a fan for guiding airflow to exchange heat with the condenser; the control device includes: The acquisition module is used to acquire the inlet temperature and outlet temperature of the evaporator; The determining module is used to determine the target operating state of the fan based on the inlet temperature and the outlet temperature; and The control module is used to control the fan to switch to the target operating state and continue operating.

[0012] Thirdly, this application also proposes a refrigerator, the refrigerator including a controller configured to perform the refrigerator control method as described above.

[0013] Fourthly, this application also proposes a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the steps in the refrigerator control method described above.

[0014] In the technical solution of this application embodiment, by obtaining the inlet temperature and outlet temperature of the evaporator, the current refrigerant state of the refrigeration system can be reflected according to the inlet temperature and outlet temperature of the evaporator, so that the operating state of the fan can be adjusted according to the refrigerant state of the refrigeration system, so that when the fan is running under the target operating state, it can provide cooling capacity using the current refrigerant state or adjust the current refrigerant state to improve cooling efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the refrigeration system of the refrigerator of this application; Figure 2 A flowchart illustrating the refrigerator control method provided in this application; Figure 3 A schematic diagram of a specific embodiment of the refrigerator control method provided in this application; Figure 4 for Figure 2 A schematic diagram of a sub-step in step S300; Figure 5 Another schematic diagram of the control process of the refrigerator provided in this application; Figure 6 A schematic diagram of another specific embodiment of the refrigerator control method provided in this application; Figure 7 A schematic diagram of another specific embodiment of the refrigerator control method provided in this application; Figure 8 A schematic diagram of the control device for the refrigerator provided in this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0020] This application provides a refrigerator and its control method, apparatus, and computer-readable storage medium, which will be described in detail below.

[0021] Figure 1A schematic diagram of a refrigerator's refrigeration system is shown. The refrigeration system includes a compressor, condenser, throttling device, evaporator, and circulation piping. During refrigeration, the compressor operates, causing the refrigerant to pass sequentially through the condenser, throttling device, and evaporator. After passing through the evaporator, the refrigerant returns to the compressor to complete one refrigeration cycle. Temperature acquisition devices, such as temperature sensors, are installed at the inlet and outlet of the evaporator to collect the inlet and outlet temperatures, respectively. The refrigeration system also includes a fan, which guides airflow to exchange heat with the condenser, thereby adjusting the refrigerant temperature and pressure within the condenser.

[0022] In one embodiment, the refrigerator further includes a controller for executing the refrigerator control method provided in this application embodiment. The controller controls the compressor and the fan.

[0023] Figure 2 An example of a refrigerator control method provided in an embodiment of this application is illustrated. The control method includes: S100, obtain the inlet temperature and outlet temperature of the evaporator; S200, determine the target operating state of the fan based on the inlet temperature and the outlet temperature; S300, control the fan to switch to the target operating state and continue operating.

[0024] In the technical solution of this application embodiment, by obtaining the inlet temperature and outlet temperature of the evaporator, the current refrigerant state of the refrigeration system can be reflected according to the inlet temperature and outlet temperature of the evaporator, so that the operating state of the fan can be adjusted according to the refrigerant state of the refrigeration system, so that when the fan is running under the target operating state, it can provide cooling capacity using the current refrigerant state or adjust the current refrigerant state to improve cooling efficiency.

[0025] In some embodiments, the steps in this control method are performed after the refrigerator's refrigeration system begins to provide cooling. For example, when the temperature in the refrigerator compartment reaches the refrigerator's start-up temperature, the refrigerator's controller begins to control the compressor and fan operation; at this time, the inlet and outlet temperatures of the evaporator are acquired to further adjust the current operating state of the fan based on these temperatures. Alternatively, in some cases, when the compressor's operating state is adjusted, the refrigerant state within the refrigeration system changes, causing the inlet and outlet temperatures to change as well, which can then be used to adjust the current operating state of the fan. Furthermore, during steady-state compressor operation, the refrigerant state within the refrigeration system is also affected by the external environment, causing changes in the inlet and outlet temperatures, which can then be used to adjust the current operating state of the fan. Finally, when the inlet and outlet temperatures of the evaporator are close, it indicates a high evaporator area utilization rate; in this case, the fan speed can be increased to increase the subcooling of the refrigeration system, enhance the circulating cooling capacity, and thus optimize refrigerator performance and save energy.

[0026] In some embodiments, the fan can be set with multiple operating speeds, each operating speed having a specified rotational speed. Any operating speed of the fan can be the target operating speed.

[0027] As an optional implementation of the above embodiments, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: obtaining the current rotational speed of the fan.

[0028] Combination Figure 3 As shown, the inlet temperature is T. in The outlet temperature is T. outThe first preset value is T1; the second preset value is T2. Determining the target operating state of the fan based on the inlet temperature and the outlet temperature further includes: when the difference between the outlet temperature and the inlet temperature is greater than the first preset value, determining the first target speed of the fan based on the current speed, wherein the first target speed is less than the current speed. When the difference between the outlet temperature and the inlet temperature is greater than the first preset value, the refrigerant in the refrigeration system is in an unbalanced state, and there is a lack of liquid refrigerant in the evaporator. In this case, the first target speed of the fan is obtained by lowering the current speed. Lowering the fan speed can increase the temperature and pressure of the refrigerant in the condenser, thereby accelerating the refrigerant return from the condenser to the evaporator, replenishing the amount of liquid refrigerant in the evaporator in a timely manner, enabling the refrigeration system to quickly establish a refrigerant circulation balance, and improving the refrigeration efficiency of the refrigerator. When the refrigerant in the refrigeration system is in an unbalanced state, and there is a lack of liquid refrigerant in the evaporator, this may be due to the compressor just starting up, the addition of a lot of hot food, or over-condensation. In this case, the cooling rate will slow down. By reducing the fan speed, the temperature and pressure of the refrigerant in the condenser can be increased, thereby accelerating the refrigerant's return to the evaporator and replenishing the amount of liquid refrigerant in the evaporator in time.

[0029] For example, in some embodiments, the current speed of the fan is at a medium speed. When the difference between the outlet temperature and the inlet temperature is greater than a first preset value, the first target speed of the fan is at a low speed or stopped, so as to increase the temperature and pressure of the refrigerant in the condenser, thereby prompting more refrigerant to flow back into the evaporator and replenishing the amount of liquid refrigerant in the evaporator in a timely manner.

[0030] Combination Figure 3 As shown, the inlet temperature is T. in The outlet temperature is T. out The first preset value is T1; the second preset value is T2. Determining the target operating state of the fan based on the inlet temperature and the outlet temperature further includes: when the difference between the outlet temperature and the inlet temperature is less than the second preset value, determining a second target speed of the fan based on the current speed, wherein the second target speed is greater than the current speed. When the difference between the outlet temperature and the inlet temperature is less than the second preset value, the fan speed is increased based on the current speed, up to the maximum allowable value. At this time, when the evaporator inlet and outlet temperatures are relatively consistent, it indicates that the evaporator area utilization rate is high. Continuing to increase the condenser fan speed can further increase the subcooling of the refrigeration system, improve the circulating cooling capacity, and allow the refrigerator to perform better and save more energy.

[0031] Combination Figure 3 As shown, the inlet temperature is T. inThe outlet temperature is T. out The first preset value is T1; the second preset value is T2. Determining the target operating state of the fan based on the inlet temperature and the outlet temperature further includes: when the difference between the outlet temperature and the inlet temperature is greater than the second preset value and less than the first preset value, determining a third target speed of the fan based on the current speed, wherein the third target speed is equal to the current speed. When the difference between the outlet temperature and the inlet temperature is greater than the second preset value and less than the first preset value, the refrigerant state and fan speed in the current refrigeration system are in optimal matching state, and the current speed is maintained for continued operation.

[0032] In the above embodiments, T1 is 2℃-3℃, for example, 2℃; T2 is 0.8℃-1.2℃, for example, 1℃.

[0033] As an optional implementation of the above embodiments, such as Figure 4 As shown, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: S310, determine the first liquid refrigerant information in the evaporator based on the inlet temperature and the outlet temperature; S320, based on the first liquid refrigerant information, determine the target operating state of the fan and / or the operating frequency of the compressor; wherein, the compressor is used to deliver liquid refrigerant to the evaporator.

[0034] In some embodiments, the amount of liquid refrigerant in the evaporator can be qualitatively assessed based on the difference between the inlet and outlet temperatures, such as being too low, moderate, or excessive. When the difference between the outlet and inlet temperatures is greater than a first preset value, the amount of liquid refrigerant is too low. When the difference between the outlet and inlet temperatures is less than a second preset value, the amount of liquid refrigerant is excessive. When the difference between the outlet and inlet temperatures is between the second and first preset values, the amount of liquid refrigerant is moderate. When the amount of liquid refrigerant is too low, the fan can reduce its speed and / or increase the compressor's operating frequency; when the amount of liquid refrigerant is excessive, the fan can increase its speed and / or decrease the compressor's operating frequency. When the amount of liquid refrigerant is moderate, both the fan and compressor maintain their current operating states.

[0035] In some embodiments, the amount of liquid refrigerant in the evaporator can be quantified based on the difference between the inlet and outlet temperatures. The system pre-stores a first mapping relationship between the difference between the outlet and inlet temperatures and the amount of liquid refrigerant; this first mapping relationship determines the amount of liquid refrigerant. Then, based on the amount of liquid refrigerant and a set threshold range, it is determined whether the amount of liquid refrigerant is too low, moderate, or excessive. When the amount of liquid refrigerant is too low, the fan can reduce its speed and / or increase the compressor's operating frequency; when the amount of liquid refrigerant is excessive, the fan can increase its speed and / or decrease the compressor's operating frequency. When the amount of liquid refrigerant is moderate, both the fan and compressor maintain their current operating states.

[0036] As an optional implementation of the above embodiments, such as Figure 5 As shown, after determining the target operating state of the fan and / or the operating frequency of the compressor based on the first liquid refrigerant information, the control method further includes: S410, based on the outlet and inlet temperatures of the evaporator after determining the target operating state of the fan and / or the operating frequency of the compressor, determine the second liquid refrigerant information in the evaporator; S420, based on the first liquid refrigerant information and the second liquid refrigerant information, determine whether the refrigeration system of the refrigerator has malfunctioned; the refrigeration system includes the compressor and the evaporator.

[0037] In some embodiments, when the refrigeration system is operating normally, the refrigerant state of the evaporator will change after adjusting the target operating state of the fan and the operating frequency of the compressor. Therefore, after adjusting the target operating state of the fan and the operating frequency of the compressor, the second liquid refrigerant information within the evaporator is determined again based on the evaporator's outlet and inlet temperatures after determining the target operating state of the fan and / or the operating frequency of the compressor; the confirmation method for the second liquid refrigerant information within the evaporator is the same as the confirmation method for the first liquid refrigerant information. Based on the first liquid refrigerant information and the second liquid refrigerant information, it is determined whether the refrigerator's refrigeration system has malfunctioned; if there is no change in the first liquid refrigerant information and the second liquid refrigerant information, it can be determined that the refrigerator's refrigeration system has malfunctioned, which may be due to insufficient refrigerant or refrigerant blockage in the refrigeration system. When there is no change in the first liquid refrigerant information and the second liquid refrigerant information, it can be defined as follows: when both the first liquid refrigerant information and the second liquid refrigerant information are qualitatively determined to be too low; when both the first liquid refrigerant information and the second liquid refrigerant information are quantitatively defined as refrigerant quantity, the change ratio of refrigerant quantity before and after adjustment is within a preset ratio, such as within 5%-10%.

[0038] Combination Figure 6As shown, as an optional implementation of the above embodiments, the control method further includes: When the difference between the outlet temperature and the inlet temperature is greater than a third preset value, it is determined whether the refrigerator door was opened or the refrigerator compressor was in a stable operating phase before a first preset time period. If the refrigerator door has not been opened before the first preset time period and the refrigerator compressor is in a stable operating phase, then it is determined whether the difference between the outlet temperature and the inlet temperature is greater than the third preset value and should be maintained for the second preset time period; if so, the refrigerator is determined to be faulty.

[0039] In this embodiment, when the difference between the outlet temperature and the inlet temperature is greater than a third preset value, it indicates that the amount of refrigerant in the evaporator is severely insufficient. In this case, it is further determined whether the refrigerator door was opened or the refrigerator compressor was in a stable operating phase before a first preset time period. If the refrigerator door was not opened before the first preset time period and the refrigerator compressor was in a stable operating phase, the influence of unstable compressor operation and heat load is ruled out, and the refrigeration system may be malfunctioning. In this case, it is further determined whether the difference between the outlet temperature and the inlet temperature remains greater than the third preset value for a second preset time period. If so, the refrigerator is determined to be malfunctioning.

[0040] In some embodiments, if the refrigerator door is not opened before a first preset time period and the refrigerator compressor is in a stable operating phase, the refrigerator may have malfunctioned. In this case, the fan can be controlled to slow down or the refrigerator can be shut down, and the refrigerator may be operating in a faulty state. At this time, it is further determined whether the difference between the outlet temperature and the inlet temperature is greater than a third preset value for a second preset time period. If, after the fan slows down or the refrigerator is shut down, the difference between the outlet temperature and the inlet temperature remains greater than the third preset value, it can be determined that the refrigerator has malfunctioned.

[0041] As an optional implementation of the above embodiments, determining the target operating state of the wind turbine includes: If it is determined that the refrigerator door was opened before the first preset time period or the refrigerator compressor was not in a stable operating phase, then the target operating state of the fan is determined to be either off operation or reduced speed operation.

[0042] In this embodiment, if it is determined that the refrigerator door is opened before the first preset time period or the refrigerator compressor is not in a stable operating phase, it may be due to changes in heat load or the compressor being turned on. At this time, the target operating state of the fan can be controlled to be off operation or reduced speed operation to increase the temperature and pressure of the refrigerant in the condenser and promote more refrigerant to flow back into the evaporator.

[0043] In this embodiment, the third preset value is greater than the first preset value, for example, it can be 4-6℃, such as 5℃.

[0044] As an optional implementation of the above embodiments, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Determine whether the inlet temperature and the outlet temperature are both within their respective set ranges; if so, determine the target operating state of the fan based on the inlet temperature and the outlet temperature.

[0045] Combination Figure 7 As shown, after obtaining the inlet temperature and outlet temperature, it is determined whether both the inlet temperature and outlet temperature are within their respective set ranges. This ensures that the target operating state of the fan is determined when both the inlet temperature and the outlet temperature are within their respective set ranges, thus avoiding adjustments to the fan due to abnormal inlet or outlet temperatures.

[0046] In the embodiment, both the inlet temperature and the outlet temperature need to be below -5°C of the ambient temperature.

[0047] To better implement the refrigerator control method in the embodiments of this application, based on the refrigerator control method, the embodiments of this application also provide a refrigerator control device, such as... Figure 8 As shown, the control device of the refrigerator includes: The acquisition module is used to acquire the inlet temperature and outlet temperature of the evaporator; The determination module is used to determine the target operating state of the fan based on the inlet temperature and the outlet temperature; The control module is used to control the fan to switch to the target operating state and continue operating.

[0048] In this embodiment, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: The acquisition module is used to acquire the current rotational speed of the fan; The determining module is used to determine a first target rotational speed of the fan based on the current rotational speed when the difference between the outlet temperature and the inlet temperature is greater than a first preset value, wherein the first target rotational speed is less than the current rotational speed; The determining module is used to determine a second target rotational speed of the fan based on the current rotational speed when the difference between the outlet temperature and the inlet temperature is less than a second preset value, wherein the second target rotational speed is greater than the current rotational speed; The determining module is used to determine a third target rotational speed of the fan based on the current rotational speed when the difference between the outlet temperature and the inlet temperature is greater than a second preset value and less than a first preset value, wherein the third target rotational speed is equal to the current rotational speed.

[0049] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: The determining module is used to determine the first liquid refrigerant information in the evaporator based on the inlet temperature and the outlet temperature; An adjustment module is used to determine the target operating state of the fan and / or the operating frequency of the compressor based on the first liquid refrigerant information; wherein the compressor is used to deliver liquid refrigerant to the evaporator.

[0050] Optionally, after determining the target operating state of the fan and / or the operating frequency of the compressor based on the first liquid refrigerant information, the control method further includes: The determination module is used to determine the second liquid refrigerant information in the evaporator based on the outlet temperature and inlet temperature of the evaporator after determining the target operating state of the fan and / or the operating frequency of the compressor; The judgment module is used to determine whether the refrigeration system of the refrigerator has malfunctioned based on the first liquid refrigerant information and the second liquid refrigerant information; the refrigeration system includes the compressor and the evaporator.

[0051] Optionally, the control method further includes: The judgment module is used to determine whether the refrigerator door has been opened or the refrigerator compressor is in a stable operation phase before the first preset time period when the difference between the outlet temperature and the inlet temperature is greater than a third preset value. The judgment module is used to determine whether the difference between the outlet temperature and the inlet temperature is greater than a third preset value and maintained for a second preset time if the refrigerator door has not been opened before the first preset time and the refrigerator compressor is in a stable operation phase; if so, the refrigerator is judged to be faulty.

[0052] Optionally, determining the target operating state of the wind turbine includes: The judgment module is used to determine whether the refrigerator door is opened or the refrigerator compressor is not in a stable operating phase if the judgment module determines that the refrigerator door is opened before a first preset time period or the refrigerator compressor is not in a stable operating phase. In this case, the determination module is used to control the fan to turn off or reduce its speed.

[0053] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: The judgment module is used to determine whether the inlet temperature and the outlet temperature are both within their respective set ranges; if so, the determination module is used to determine the target operating state of the fan based on the inlet temperature and the outlet temperature.

[0054] This application also proposes a refrigerator control system, including: one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the refrigerator control method as described above.

[0055] Typically, the refrigerator's control system includes at least one processor, at least one memory, and a control program for the refrigerator's control system stored in the memory and executable on the processor. The control program for the refrigerator's control system is configured to implement the steps of the control method described above.

[0056] The processor may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor can be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. The processor may also include an AI (Artificial Intelligence) processor, which handles the control method operations of the refrigerator's control system, enabling the control method model of the refrigerator's control system to learn autonomously, improving efficiency and accuracy.

[0057] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory is used to store at least one instruction, which is executed by a processor to implement the refrigerator control method of the refrigerator control system provided in the method embodiments of this application. Obtain the inlet temperature and outlet temperature of the evaporator; The target operating state of the fan is determined based on the inlet temperature and the outlet temperature. Control the fan to switch to the target operating state and continue operating.

[0058] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Obtain the current rotational speed of the fan; When the difference between the outlet temperature and the inlet temperature is greater than a first preset value, a first target speed of the fan is determined based on the current speed, wherein the first target speed is less than the current speed; When the difference between the outlet temperature and the inlet temperature is less than a second preset value, a second target speed of the fan is determined based on the current speed, wherein the second target speed is greater than the current speed; When the difference between the outlet temperature and the inlet temperature is greater than a second preset value and less than the first preset value, a third target speed of the fan is determined based on the current speed, wherein the third target speed is equal to the current speed.

[0059] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: The information of the first liquid refrigerant in the evaporator is determined based on the inlet temperature and the outlet temperature. Based on the first liquid refrigerant information, the target operating state of the fan and / or the operating frequency of the compressor are determined; wherein, the compressor is used to deliver liquid refrigerant to the evaporator.

[0060] Optionally, after determining the target operating state of the fan and / or the operating frequency of the compressor based on the first liquid refrigerant information, the control method further includes: Based on the outlet and inlet temperatures of the evaporator after determining the target operating state of the fan and / or the operating frequency of the compressor, the information of the second liquid refrigerant in the evaporator is determined. Based on the first liquid refrigerant information and the second liquid refrigerant information, it is determined whether the refrigerator's refrigeration system has malfunctioned; the refrigeration system includes the compressor and the evaporator.

[0061] Optionally, the control method further includes: When the difference between the outlet temperature and the inlet temperature is greater than a third preset value, it is determined whether the refrigerator door was opened or the refrigerator compressor was in a stable operating phase before a first preset time period. If the refrigerator door has not been opened before the first preset time period and the refrigerator compressor is in a stable operating phase, then it is determined whether the difference between the outlet temperature and the inlet temperature is greater than the third preset value and should be maintained for the second preset time period; if so, the refrigerator is determined to be faulty.

[0062] Optionally, determining the target operating state of the wind turbine includes: If it is determined that the refrigerator door was opened before the first preset time period or the refrigerator compressor was not in a stable operating phase, then the target operating state of the fan is determined to be either off operation or reduced speed operation.

[0063] Optionally, determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Determine whether the inlet temperature and the outlet temperature are both within their respective set ranges; if so, determine the target operating state of the fan based on the inlet temperature and the outlet temperature.

[0064] The above provides a detailed description of a refrigerator and its control method, apparatus, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for controlling a refrigerator, characterized in that, The refrigerator includes an evaporator, a condenser, and a fan for guiding airflow to exchange heat with the condenser; the control method includes: Obtain the inlet temperature and outlet temperature of the evaporator; The target operating state of the fan is determined based on the inlet temperature and the outlet temperature. Control the fan to switch to the target operating state and continue operating.

2. The control method as described in claim 1, characterized in that, Determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Obtain the current rotational speed of the fan; When the difference between the outlet temperature and the inlet temperature is greater than a first preset value, a first target speed of the fan is determined based on the current speed, wherein the first target speed is less than the current speed; When the difference between the outlet temperature and the inlet temperature is less than a second preset value, a second target speed of the fan is determined based on the current speed, wherein the second target speed is greater than the current speed; When the difference between the outlet temperature and the inlet temperature is greater than a second preset value and less than the first preset value, a third target speed of the fan is determined based on the current speed, wherein the third target speed is equal to the current speed.

3. The control method as described in claim 1, characterized in that, Determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: The information of the first liquid refrigerant in the evaporator is determined based on the inlet temperature and the outlet temperature. Based on the first liquid refrigerant information, the target operating state of the fan and / or the operating frequency of the compressor are determined; wherein, the compressor is used to deliver liquid refrigerant to the evaporator.

4. The control method as described in claim 3, characterized in that, After determining the target operating state of the fan and / or the operating frequency of the compressor based on the first liquid refrigerant information, the control method further includes: Based on the outlet and inlet temperatures of the evaporator after determining the target operating state of the fan and / or the operating frequency of the compressor, the information of the second liquid refrigerant in the evaporator is determined. Based on the first liquid refrigerant information and the second liquid refrigerant information, it is determined whether the refrigerator's refrigeration system has malfunctioned; the refrigeration system includes the compressor and the evaporator.

5. The control method as described in claim 1, characterized in that, The control method further includes: When the difference between the outlet temperature and the inlet temperature is greater than a third preset value, it is determined whether the refrigerator door was opened or the refrigerator compressor was in a stable operating phase before a first preset time period. If the refrigerator door has not been opened before the first preset time period and the refrigerator compressor is in a stable operating phase, then it is determined whether the difference between the outlet temperature and the inlet temperature is greater than the third preset value and should be maintained for the second preset time period; if so, the refrigerator is determined to be faulty.

6. The control method as described in claim 5, characterized in that, Determining the target operating state of the wind turbine includes: If it is determined that the refrigerator door was opened before the first preset time period or the refrigerator compressor was not in a stable operating phase, then the target operating state of the fan is determined to be either off operation or reduced speed operation.

7. The control method as described in claim 1, characterized in that, Determining the target operating state of the fan based on the inlet temperature and the outlet temperature includes: Determine whether the inlet temperature and the outlet temperature are both within their respective set ranges; if so, determine the target operating state of the fan based on the inlet temperature and the outlet temperature.

8. A control device for a refrigerator, characterized in that, The refrigerator includes an evaporator, a condenser, and a fan for guiding airflow to exchange heat with the condenser; the control device includes: The acquisition module is used to acquire the inlet temperature and outlet temperature of the evaporator; The determination module is used to determine the target operating state of the fan based on the inlet temperature and the outlet temperature; The control module is used to control the fan to switch to the target operating state and continue operating.

9. A refrigerator, characterized in that, The refrigerator includes a controller configured to perform the control method for the refrigerator according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the refrigerator control method according to any one of claims 1 to 7.

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