Refrigerator defrosting control method and device, electronic device and storage medium

Abstract

The invention relates to a refrigerator defrosting control method and device, an electronic device and a storage medium, and the refrigerator defrosting control method comprises the steps that after a refrigerator starts refrigerating for a preset duration, the average rotating speed of a refrigerating fan within the preset duration is detected to serve as the initial rotating speed, and the average air speed of the refrigerating fan within the preset duration is detected to serve as the initial air speed; detecting the real-time wind speed of the refrigeration fan; when the real-time air speed is reduced by the preset proportion every time, the refrigeration fan is controlled to be increased by the preset gear coefficient once until the real-time rotating speed of the refrigeration fan reaches the preset maximum rotating speed, and when the real-time air speed reaches the preset proportion of the initial air speed, the compressor and the refrigeration fan are controlled to stop running, and the defrosting heater is started for defrosting treatment; the problems that refrigerator defrosting control is inaccurate and energy consumption is large are solved, the accuracy of refrigerator defrosting control is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and in particular to a refrigerator defrosting control method, device, electronic device and storage medium. Background Art

[0002] At present, the defrosting of refrigerators is mainly to prevent the frost on the evaporator from being too thick, which will cause the refrigeration effect to decrease and affect the normal operation of the product. Therefore, defrosting control is added to the refrigerator control program. The defrosting of air-cooled refrigerators is usually done by heating and defrosting with electric heating tubes. Many defrosting controls roughly reflect the amount of frost on the evaporator based on the cumulative running time of the compressor, the number of door openings or the door opening and closing time, and then set a value comprehensively for comparison and judgment, so as to control whether to enter the defrosting mode. However, the user's usage environment is different, and the universal refrigerator defrosting model cannot meet all the requirements. This condition cannot accurately determine the frosting state on the refrigerator evaporator, which will cause incomplete defrosting due to untimely defrosting and subsequent poor refrigeration problems; it will also cause excessive defrosting, resulting in frequent temperature rises in the box, resulting in large temperature fluctuations in the frozen food in the freezer, affecting the preservation effect of the food stored in the box. In addition, excessive defrosting will also increase the power consumption of the refrigerator due to defrosting heating.

[0003] With regard to the problems of inaccurate refrigerator defrosting control and high energy consumption in related technologies, no effective solution has been proposed so far. Summary of the invention

[0004] In the present embodiment, a refrigerator defrost control method, device, electronic device and storage medium are provided to solve the problems of inaccurate refrigerator defrost control and high energy consumption in the related art.

[0005] In a first aspect, a refrigerator defrosting control method is provided in this embodiment, wherein the refrigerator includes a refrigerating chamber and a freezing chamber, and a refrigerating fan is installed in the freezing chamber, including:

[0006] After the refrigerator starts to refrigerate for a preset time, the average rotation speed of the refrigeration fan within the preset time is detected as the initial rotation speed, and the average wind speed of the refrigeration fan within the preset time is detected as the initial wind speed;

[0007] Detect the real-time wind speed of the refrigeration fan;

[0008] Every time the real-time wind speed decreases by a preset proportion, the refrigeration fan is controlled to increase the preset gear coefficient until the real-time speed of the refrigeration fan reaches the preset maximum speed and the real-time wind speed reaches the preset proportion of the initial wind speed. Then, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting.

[0009] In some of the embodiments, the initial wind speed and the real-time wind speed are collected by a wind speed sensor from the total air outlet of the inner air cavity where the refrigeration fan is located.

[0010] In some embodiments, after the defrost heater is started to perform defrost processing, the method further includes:

[0011] Determine whether the temperature detected by the defrost temperature sensor is greater than the preset exit temperature;

[0012] If so, the defrost heater is controlled to stop heating and defrosting ends.

[0013] In some embodiments, after the defrost heater is started to perform defrost processing, the method further includes:

[0014] Determine whether the defrosting time of the defrosting heater is greater than the preset heating time;

[0015] If so, the defrost heater is controlled to stop heating and defrosting ends.

[0016] In some of the embodiments, before detecting the initial rotation speed and initial wind speed of the refrigeration fan, the method further includes:

[0017] Determine whether the temperature of the refrigerator compartment is greater than the power-on point temperature;

[0018] If yes, open the damper of the refrigerator compartment to cool the refrigerator compartment;

[0019] When the temperature of the refrigerator compartment is lower than the shutdown point temperature, close the damper of the refrigerator compartment.

[0020] In some of the embodiments, when the real-time rotation speed of the refrigeration fan does not reach the preset maximum rotation speed, and the real-time wind speed does not reach the preset proportion of the initial wind speed, the method further includes:

[0021] Determine whether the refrigeration time of the refrigerator reaches the preset maximum refrigeration time;

[0022] If so, the compressor and refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting.

[0023] In a second aspect, a refrigerator defrosting control device is provided in this embodiment, comprising: a first detection module, a second detection module, a first control module and a second control module, wherein:

[0024] A first detection module is used to detect an average rotation speed of the refrigeration fan within a preset time as an initial rotation speed and an average wind speed of the refrigeration fan within a preset time as an initial wind speed after the refrigerator starts refrigerating for a preset time;

[0025] The second detection module is used to detect the real-time wind speed of the refrigeration fan;

[0026] The first control module is used to control the refrigeration fan to increase a preset gear coefficient each time the real-time wind speed decreases by a preset ratio;

[0027] The second control module is used to control the compressor and the refrigeration fan to stop running and start the defrost heater to perform defrosting when the speed of the refrigeration fan reaches a preset maximum speed and the real-time wind speed reaches a preset proportion of the initial wind speed.

[0028] In a third aspect, a computer device is provided in this embodiment, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the refrigerator defrost control method described in the first aspect are implemented.

[0029] In a fourth aspect, an electronic device is provided in this embodiment, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the refrigerator defrost control method described in the first aspect when executing the computer program.

[0030] In a fifth aspect, a storage medium is provided in this embodiment, on which a computer program is stored, and when the program is executed by a processor, the refrigerator defrost control method described in the first aspect is implemented.

[0031] Compared with the related art, the refrigerator defrost control method provided in the present embodiment detects the average rotation speed of the refrigeration fan within the preset time as the initial rotation speed, and detects the average wind speed of the refrigeration fan within the preset time as the initial wind speed after the refrigerator starts to refrigerate for a preset time; detects the real-time wind speed of the refrigeration fan; when the real-time wind speed decreases by a preset proportion, controls the refrigeration fan to increase a preset gear coefficient once, until the real-time rotation speed of the refrigeration fan reaches a preset maximum rotation speed, and when the real-time wind speed reaches a preset proportion of the initial wind speed, controls the compressor and the refrigeration fan to stop running, and starts the defrost heater to perform defrosting, thereby solving the problems of inaccurate defrost control and high energy consumption of the refrigerator, improving the accuracy of the refrigerator defrost control and reducing energy consumption.

[0032] 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

[0033] 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:

[0034] Figure 1 It is a hardware structure block diagram of the terminal of the refrigerator defrosting control method of this embodiment.

[0035] Figure 2 It is a flow chart of the refrigerator defrosting control method of this embodiment.

[0036] Figure 3a It is a schematic diagram of the front cross-sectional structure of the refrigerator of this embodiment.

[0037] Figure 3b It is a schematic diagram of the side sectional structure of the refrigerator of this embodiment.

[0038] Figure 4 It is a flow chart of another refrigerator defrosting control method of this embodiment.

[0039] Figure 5 It is a structural block diagram of the refrigerator defrost control device of this embodiment. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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 1FIG. 1 is a hardware structure diagram of a terminal of the refrigerator defrosting control method of this embodiment. Figure 1 As shown, the terminal may include one or more ( Figure 1 Only one is shown in the figure) processor 102 and memory 104 for storing data, wherein processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0043] 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 refrigerator defrosting control method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0044] 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.

[0045] In this embodiment, a refrigerator defrosting control method is provided. The refrigerator includes a refrigerating chamber and a freezing chamber. A refrigerating fan is installed in the freezing chamber. Figure 2 FIG. 1 is a flow chart of the refrigerator defrosting control method of this embodiment. Figure 2 As shown, the process includes the following steps:

[0046] Step S201, after the refrigerator starts refrigerating for a preset time, the average rotation speed of the refrigeration fan within the preset time is detected as the initial rotation speed, and the average wind speed of the refrigeration fan within the preset time is detected as the initial wind speed.

[0047] Specifically, Figure 3a is a schematic diagram of the front cross-sectional structure of the refrigerator of this embodiment, Figure 3b is a schematic diagram of the side cross-sectional structure of the refrigerator of this embodiment, as shown in Figure 3a and Figure 3b As shown, the refrigerator is provided with a freezing chamber 31, a refrigerating chamber 32 and a compressor 33. The freezing chamber 31 is provided with a refrigerating fan 34 with signal feedback, a wind speed sensor 35, a defrosting temperature sensor 36, a freezing upper air duct 311, a freezing lower air duct 312, a freezing evaporator 313 and a freezing sensor 314; the refrigerating chamber 32 is provided with a refrigerating damper 321, a refrigerating air duct 322, a refrigerating sensor 323, a refrigerating return air port 324 and a refrigerating air outlet 325. Among them, the defrosting temperature sensor 36 is provided on the freezing evaporator 313 for detecting the temperature in the defrosting stage; the freezing evaporator 313 is also provided with a defrosting heater (not shown in the figure) for heating and defrosting the freezing evaporator 313. One outlet of the refrigeration fan 34 leads to the freezing upper air duct 311, and transfers the cold energy generated by the freezing evaporator 313 to the freezing chamber 31. The other outlet of the refrigeration fan 34 transfers the cold energy generated by the freezing evaporator 313 to the refrigerating chamber 32 through the refrigerating air door 321. The wind speed sensor 35 is installed on the outlet of the refrigeration fan 34 leading to the freezing upper air duct 311.

[0048] When frost forms on the evaporator, the wind resistance in the air duct becomes larger when passing through the evaporator. At this time, the wind speed blowing into the box slows down, and the refrigeration speed of the refrigerator slows down, affecting the preservation of food in the refrigerator. The change in wind speed collected by the wind speed sensor can reflect the size of the wind resistance of the freezing evaporator. The frosting state of the freezing evaporator can be indirectly judged by the size of the wind resistance. When the wind speed drops to a certain level, it proves that the frost layer on the evaporator has brought greater resistance to the wind circulation in the air duct and affected the heat exchange efficiency of the evaporator. At this time, defrosting is required. Specifically, after the first refrigeration is completed after the refrigerator is powered on, defrosting is completed. When refrigeration starts, the refrigeration damper 321 is closed first, and the freezing chamber 31 is allowed to refrigerate alone for 10 minutes to 15 minutes. The duration of the independent refrigeration can be set according to the actual ambient temperature and other conditions, and this embodiment does not make specific restrictions on this. The average wind speed of the cooling fan 34 during the time period is detected by the wind speed sensor 35 as the initial wind speed V0 of the cooling fan 34. At the same time, the average rotation speed of the cooling fan 34 during the time period is detected by a speed meter and other equipment as the initial rotation speed R0. The accuracy of the detection is improved by taking the average value.

[0049] Step S202, detecting the real-time wind speed of the refrigeration fan; when the real-time wind speed decreases by a preset ratio, controlling the refrigeration fan to increase a preset gear coefficient.

[0050] Specifically, the real-time wind speed V1 of the refrigeration fan is continuously detected, and the change difference △V of the real-time wind speed V1 is calculated in real time. When the wind speed change difference △V decreases by a preset ratio, for example, when the wind speed decreases by 10%, the ratio can be selected between 10% and 15%, and the refrigeration fan is adjusted to a certain gear, such as increasing the speed of the refrigeration fan by 5%. The speed adjustment range can be 5%-10%, which can be set according to actual conditions. At the same time, the speed of the compressor is adjusted synchronously, which can be adjusted up by one gear accordingly. In this embodiment, when the wind speed is detected to be reduced, the speed of the refrigeration fan is gradually increased, and the speed of the compressor is also controlled to increase, so as to increase the refrigeration capacity of the refrigeration evaporator, thereby compensating for the wind speed attenuation caused by frosting, ensuring that the refrigeration capacity entering the room per unit time is maintained at the normal refrigeration level, thereby reducing the temperature fluctuation in the room and achieving a better preservation effect.

[0051] Step S203, when the real-time speed of the refrigeration fan reaches the preset maximum speed and the real-time wind speed reaches the preset proportion of the initial wind speed, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting.

[0052] Specifically, whenever it is detected that the wind speed of the refrigeration fan is reduced by a certain proportion, the speed of the refrigeration fan is increased. When the real-time speed of the refrigeration fan has been adjusted to the preset maximum speed, for example, when the duty cycle of the refrigeration fan has reached 100%, and when it is detected that the real-time wind speed of the refrigeration fan reaches the preset proportion of the difference of the initial wind speed, for example, when the real-time wind speed is reduced to 30% of the initial wind speed, it means that the refrigeration evaporator has been frosted a lot at this time, and the thickness of the frost layer has affected the heat exchange effect of the evaporator, and also increased the resistance of the air duct circulation. If it continues to run, the refrigeration effect of the refrigerator will be deteriorated and the power consumption of the refrigerator will be greatly increased. At the same time, it will also cause the defrosting time of the refrigerator to be longer, affecting the food preservation effect of the refrigerator, and also increasing the operating noise of the refrigerator. At this time, the compressor and the refrigeration fan are controlled to stop running, the refrigerator stops refrigeration, and the defrost heater is started to start heating and defrosting.

[0053] Through the above steps S201 to S203, after the refrigerator starts to refrigerate for a preset time, the average speed of the refrigeration fan within the preset time is detected as the initial speed, and the average wind speed of the refrigeration fan within the preset time is detected as the initial wind speed; the real-time wind speed of the refrigeration fan is detected; when the real-time wind speed decreases by a preset ratio, the refrigeration fan is controlled to increase a preset gear coefficient once, until the real-time speed of the refrigeration fan reaches the preset maximum speed, and the real-time wind speed reaches the preset proportion of the initial wind speed, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting. Compared with the prior art that controls defrosting according to the cumulative running time of the compressor, the number of door openings or the door opening time, this embodiment detects the real-time wind speed of the refrigeration fan through the wind speed sensor inside the air duct, and when it is detected that the real-time wind speed decreases by a certain ratio, the speed of the refrigeration fan is adjusted to increase by a certain ratio; when the speed of the refrigeration fan is adjusted to the preset maximum value, and the real-time wind speed decreases to the preset proportion of the initial wind speed, the compressor and the refrigeration fan are controlled to stop running, stop refrigeration, and start heating and defrosting the evaporator. Among them, when it is detected that the real-time wind speed is reduced by a certain proportion, the refrigeration effect of the compartment is not affected by stably adjusting the speed of the refrigeration fan, reducing the temperature fluctuation of the compartment, thereby ensuring the freshness preservation effect of the refrigerator. In addition, after the refrigeration fan reaches the maximum speed, the defrost is started when the real-time wind speed does not meet the refrigeration conditions. Compared with starting the defrost as soon as the wind speed change is detected, the defrost cycle can be appropriately extended, the number of heating defrosts can be reduced, and the number of temperature rises in the box can be reduced. On the one hand, the accuracy of the defrost control of the refrigerator is improved, and on the other hand, excessive fluctuations in the room temperature are prevented, thereby reducing energy consumption.

[0054] In some of the embodiments, the initial wind speed and the real-time wind speed are collected by a wind speed sensor from the total air outlet of the inner air cavity where the refrigeration fan is located.

[0055] Specifically, in the prior art, a wind speed sensor is often installed at the end outlet of the air duct farthest from the evaporator to collect the wind speed of the refrigeration fan. Since the wind speed of the refrigerator is relatively low, the wind speed collected by the wind speed sensor installed far away from the fan has a large error and cannot accurately reflect the change of wind speed, which can easily cause misjudgment and lead to inaccurate defrosting control. In addition, the wind speed sensor is installed at the end of the air duct, and the position of the food in the box will also interfere with the wind speed sensor, causing the wind speed sensor to be unable to accurately sense the change of the wind speed in the air duct, thereby increasing the inaccuracy of the defrost cycle, and may cause frequent defrosting or no defrosting for a long time, which is not conducive to the preservation and energy saving of the refrigerator. Based on this, Figure 3aAs shown, in this example, the wind speed sensor 35 is installed on the outlet of the refrigeration fan 34 to the freezing upper air duct 311, close to the total outlet of the wind cavity volute of the refrigeration fan 34 at the closest distance. This position setting can accurately reflect the changes in the real-time wind speed of the refrigeration fan, reduce the resistance changes caused by abnormal deformation of the air duct air supply cavity and the influence of different placement positions of actual objects in the box on the sensor collection accuracy, improve the accuracy of wind speed detection, and thereby improve the accuracy of refrigerator defrosting control.

[0056] In another embodiment, after the defrost heater is started to perform defrost processing, the method further includes:

[0057] Determine whether the temperature detected by the defrost temperature sensor is greater than the preset exit temperature;

[0058] If so, the defrost heater is controlled to stop heating and defrosting ends.

[0059] Specifically, after the refrigerator starts to defrost, the defrost temperature sensor set on the freezer evaporator detects the temperature change on the freezer evaporator. When the temperature detected by the defrost temperature sensor is greater than the preset defrost exit temperature, the defrost heater is controlled to stop heating and defrosting ends. After defrosting ends, a new round of refrigeration cycle control is restarted. By detecting the temperature of the freezer evaporator during the defrost stage to control the progress of defrosting, the problem of uncertainty in the defrost cycle caused by simply relying on the ambient temperature and the number of door openings and closings to determine the defrost cycle is solved.

[0060] In some embodiments, after starting the defrost heater to perform defrost processing, the method further includes:

[0061] Determine whether the defrosting time of the defrost heater is greater than the preset heating time; if so, control the defrost heater to stop heating and defrosting ends.

[0062] Specifically, during the defrosting process, if the temperature detected by the defrosting temperature sensor has not reached the preset exit temperature, then by judging whether the defrosting time of the defrosting heater is greater than the preset heating time, if the defrosting heating time exceeds the preset heating time, it can also be judged that the defrosting can be ended, wherein the preset heating time is set according to the actual heating situation, and is generally the time that can ensure complete defrosting. The defrosting heater is controlled to stop heating, and the defrosting ends. After the defrosting ends, a new round of refrigeration cycle control is restarted. By detecting the defrosting heating time in the defrosting stage to control the progress of the defrosting, the problem of uncertainty in the defrosting cycle caused by simply relying on the ambient temperature and the number of door openings and closings to determine the defrosting cycle is further solved. The problem of poor preservation of frozen food caused by large temperature fluctuations in the box due to too long defrosting time is solved; the safety problem caused by local overheating caused by incomplete defrosting during re-defrosting and the problem of uncompleted residual frost affecting normal refrigeration are solved; the problem of increased power consumption caused by excessive defrosting is solved.

[0063] In another embodiment, before detecting the initial rotation speed and initial wind speed of the refrigeration fan, the method further includes:

[0064] Determine whether the temperature of the refrigerated room is greater than the start-up point temperature; if so, open the damper of the refrigerated room to cool the refrigerated room; when the temperature of the refrigerated room is less than the shutdown point temperature, close the damper of the refrigerated room.

[0065] Specifically, before the refrigeration starts to perform defrost control, first determine whether the temperature of the refrigerator compartment is greater than the start-up point temperature, that is, determine whether the refrigerator compartment needs to be refrigerated. Since the temperature of the refrigerator compartment is higher than that of the freezer compartment, food is more likely to spoil after heating. Therefore, the refrigeration demand of the refrigerator compartment is preferentially met during the refrigerator refrigeration stage. When it is determined that the temperature of the refrigerator compartment is greater than the start-up point temperature, first open the refrigeration damper leading to the refrigerator compartment from the refrigeration fan, and cool the refrigerator compartment by delivering cold energy through the refrigeration air duct. When the temperature of the refrigerator compartment is lower than the shutdown point temperature, close the refrigeration damper of the refrigerator compartment. Enter the defrost control stage, and detect the initial speed and initial wind speed of the refrigeration fan.

[0066] In some of the embodiments, when the real-time rotation speed of the refrigeration fan does not reach the preset maximum rotation speed, and the real-time wind speed does not reach the preset proportion of the initial wind speed, the method further includes:

[0067] Determine whether the refrigeration time of the refrigerator reaches the preset maximum refrigeration time; if so, control the compressor and refrigeration fan to stop running, and start the defrost heater to perform defrosting.

[0068] Specifically, when the real-time speed of the refrigeration fan does not reach the preset maximum speed, and the real-time wind speed detected by the wind speed sensor does not reach the preset proportion of the initial wind speed, if the refrigeration time of the refrigerator reaches the preset coldest time, the refrigerator can also be controlled to end refrigeration and start defrosting. Therefore, it is judged whether the refrigeration time of the refrigerator has reached the preset maximum refrigeration time. If the preset maximum refrigeration time is not obtained, the speed of the refrigeration fan and the speed of the compressor are continued to be controlled according to the decreasing proportion of the real-time wind speed until the real-time speed of the refrigeration fan reaches the preset maximum speed and the real-time wind speed reaches the preset proportion of the initial wind speed, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting. If the refrigeration time of the refrigerator reaches the preset maximum refrigeration time, the compressor and the refrigeration fan are directly controlled to stop running, and the defrost heater is started to perform defrosting.

[0069] This embodiment also provides a refrigerator defrosting control method. Figure 4 FIG. 1 is a flow chart of another refrigerator defrosting control method according to the present embodiment. Figure 4 As shown, the process includes the following steps:

[0070] Step S401, the refrigerator starts refrigeration;

[0071] Step S402, determining whether the refrigerating chamber needs refrigeration, if so, executing step S403, otherwise, executing step S404;

[0072] Step S403, opening the refrigeration damper to refrigerate the refrigeration chamber until the refrigeration of the refrigeration chamber is completed;

[0073] Step S404, closing the refrigeration damper;

[0074] Step S405, after the refrigerator continues to refrigerate for a preset time, the initial rotation speed R0 and initial wind speed V0 of the refrigeration fan within the preset time are detected;

[0075] Step S406: collect the real-time wind speed V of the cooling fan t ;

[0076] Step S407, determine the real-time wind speed V t Whether the speed reduction reaches a preset percentage (e.g., 10%), if so, execute step S408, otherwise, execute step 406;

[0077] Step S408, controlling the compressor speed to increase by one gear, and controlling the refrigeration fan speed to increase by 10%;

[0078] Step S409, determining whether the real-time speed of the cooling fan reaches the preset maximum speed, and whether the real-time wind speed V of the cooling fan reaches the preset maximum speed. tReaching a preset percentage (e.g., 30%) of the initial wind speed V0, if yes, executing step S410, otherwise, executing step S413;

[0079] Step S410, controlling the compressor and the refrigeration fan to stop running, and starting the defrost heater to perform defrosting;

[0080] Step S411, determining whether the temperature detected by the defrost temperature sensor is greater than the preset exit temperature or whether the defrosting time of the defrost heater is greater than the preset heating time, if so, executing step S412, otherwise, executing step S410;

[0081] Step S412, controlling the defrost heater to stop heating, and defrosting ends.

[0082] Step S413, determining whether the refrigeration time of the refrigerator reaches the preset maximum refrigeration time, if so, executing step S410, otherwise, executing step 406.

[0083] Through the above steps S401 to S413, compared with the prior art in which defrosting is controlled according to the accumulated running time of the compressor, the number of door opening and closing times or the door opening and closing time, the present embodiment detects the real-time wind speed of the refrigeration fan through the wind speed sensor inside the air duct, and when it is detected that the real-time wind speed decreases by a certain proportion every time, the speed of the refrigeration fan is adjusted to increase by a certain proportion; when the speed of the refrigeration fan is adjusted to a preset maximum value, and the real-time wind speed is reduced to a preset proportion of the initial wind speed or when the refrigeration time reaches a preset maximum refrigeration time, the compressor and the refrigeration fan are controlled to stop running, refrigeration is stopped, the evaporator is started to be heated and defrosted, and the end of defrosting is controlled by the defrost temperature sensor and the defrost time. Among them, when it is detected that the real-time wind speed is reduced by a certain proportion, the refrigeration effect of the compartment is not affected by stably adjusting the speed of the refrigeration fan, reducing the temperature fluctuation of the compartment, thereby ensuring the freshness preservation effect of the refrigerator. In addition, after the refrigeration fan reaches the maximum speed, the defrost is started when the real-time wind speed does not meet the refrigeration conditions. Compared with starting the defrost as soon as the wind speed change is detected, the defrost cycle can be appropriately extended, the number of heating defrosts can be reduced, and the number of temperature rises in the box can be reduced. On the one hand, the accuracy of the defrost control of the refrigerator is improved, and on the other hand, excessive fluctuations in the room temperature are prevented, energy consumption is reduced, and economic benefits are improved.

[0084] In this embodiment, a refrigerator defrosting control device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, 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 a predetermined function. 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 conceived.

[0085] Figure 5 : is a structural block diagram of the refrigerator defrosting control device of this embodiment, such as Figure 5 As shown, the device 50 includes: a first detection module 51, a second detection module 52, a first control module 53 and a second control module 54, wherein:

[0086] The first detection module 51 is used to detect the average rotation speed of the refrigeration fan within the preset time as the initial rotation speed and the average wind speed of the refrigeration fan within the preset time as the initial wind speed after the refrigerator starts to refrigerate for a preset time;

[0087] The second detection module 52 is used to detect the real-time wind speed of the refrigeration fan;

[0088] The first control module 53 is used to control the refrigeration fan to increase a preset gear coefficient every time the real-time wind speed decreases by a preset ratio;

[0089] The second control module 54 is used to control the compressor and the refrigeration fan to stop running and start the defrost heater to perform defrosting when the speed of the refrigeration fan reaches a preset maximum speed and the real-time wind speed reaches a preset proportion of the initial wind speed.

[0090] 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.

[0091] In this embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps in any of the above method embodiments are implemented.

[0092] In this embodiment, an electronic device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0093] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0094] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0095] S1, after the refrigerator starts refrigerating for a preset time, detecting the average rotation speed of the refrigeration fan within the preset time as the initial rotation speed, and detecting the average wind speed of the refrigeration fan within the preset time as the initial wind speed;

[0096] S2, detecting the real-time wind speed of the refrigeration fan;

[0097] S3, when the real-time wind speed decreases by a preset proportion each time, the refrigeration fan is controlled to increase the preset gear coefficient once, until the real-time speed of the refrigeration fan reaches the preset maximum speed, and when the real-time wind speed reaches the preset proportion of the initial wind speed, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting.

[0098] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and will not be repeated in this embodiment.

[0099] In addition, in combination with the refrigerator defrosting control method provided in the above embodiments, a storage medium can also be provided in this embodiment to implement the refrigerator defrosting control method. The storage medium stores a computer program; when the computer program is executed by a processor, any refrigerator defrosting control method in the above embodiments is implemented.

[0100] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0101] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0102] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0103] 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.

[0104] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A defrosting control method for a refrigerator, wherein the refrigerator comprises a refrigerating chamber and a freezing chamber, wherein a refrigerating fan is installed in the freezing chamber, characterized in that: The method comprises: After the refrigerator starts refrigerating for a preset time, detecting an average rotation speed of the refrigeration fan within the preset time as an initial rotation speed, and detecting an average wind speed of the refrigeration fan within the preset time as an initial wind speed; Detecting the real-time wind speed of the refrigeration fan; Every time the real-time wind speed decreases by a preset proportion, the refrigeration fan is controlled to increase a preset gear coefficient until the real-time speed of the refrigeration fan reaches a preset maximum speed, and when the real-time wind speed reaches a preset proportion of the initial wind speed, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting.

2. The refrigerator defrosting control method according to claim 1, characterized in that: The initial wind speed and the real-time wind speed are collected by a wind speed sensor from the total air outlet of the inner air cavity where the refrigeration fan is located.

3. The refrigerator defrosting control method according to claim 1, characterized in that: After starting the defrost heater to perform defrost processing, the method further includes: Determine whether the temperature detected by the defrost temperature sensor is greater than the preset exit temperature; If so, the defrost heater is controlled to stop heating, and the defrosting is finished.

4. The refrigerator defrosting control method according to claim 1, characterized in that: After starting the defrost heater to perform defrost processing, the method further includes: Determining whether the defrosting time of the defrosting heater is greater than a preset heating time; If so, the defrost heater is controlled to stop heating, and the defrosting is finished.

5. The refrigerator defrosting control method according to claim 1, characterized in that: Before detecting the initial rotation speed and initial wind speed of the refrigeration fan, the method further includes: Determining whether the temperature of the refrigerating chamber is greater than the power-on point temperature; If yes, opening the damper of the refrigerating chamber to cool the refrigerating chamber; When the temperature of the refrigerating chamber is lower than the shutdown point temperature, the air door of the refrigerating chamber is closed.

6. The refrigerator defrosting control method according to claim 1, characterized in that: When the real-time rotation speed of the refrigeration fan does not reach the preset maximum rotation speed, and the real-time wind speed does not reach the preset proportion of the initial wind speed, the method further includes: Determining whether the refrigeration time of the refrigerator reaches a preset maximum refrigeration time; If so, the compressor and the refrigeration fan are controlled to stop running, and the defrost heater is started to perform defrosting.

7. A refrigerator defrosting control device, characterized in that: include: A first detection module, a second detection module, a first control module and a second control module, wherein: The first detection module is used to detect the average rotation speed of the refrigeration fan within the preset time as the initial rotation speed, and detect the average wind speed of the refrigeration fan within the preset time as the initial wind speed after the refrigerator starts refrigeration for a preset time; The second detection module is used to detect the real-time wind speed of the refrigeration fan; The first control module is used to control the refrigeration fan to increase a preset gear coefficient each time the real-time wind speed decreases by a preset ratio; The second control module is used to control the compressor and the refrigeration fan to stop running and start the defrost heater to perform defrosting when the speed of the refrigeration fan reaches a preset maximum speed and the real-time wind speed reaches a preset proportion of the initial wind speed.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the refrigerator defrosting control method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the refrigerator defrosting control method according to any one of claims 1 to 6 are implemented.

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