Defrosting control method and device for refrigerator and refrigerator

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a defrosting control method for a refrigerator, which comprises the following steps: in response to a super-efficiency energy-saving instruction, obtaining a refrigeration stage of a refrigeration chamber and an evaporator temperature value of a refrigeration evaporator; after the refrigeration time period of the refrigeration chamber is finished, the refrigeration fan is controlled to continue to operate; and in the operation stage of the refrigeration fan, if the temperature value of the evaporator meets the fan delay starting condition, the refrigeration fan delay duration is determined, and the refrigeration fan is controlled to continuously operate for the refrigeration fan delay duration so as to conduct air defrosting on the refrigeration evaporator. According to the method, the defrosting energy consumption of the refrigerator and the energy consumption of the whole refrigerator can be reduced. The invention further discloses a defrosting control device for the refrigerator and the refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, for example, to a defrosting control method and device for a refrigerator, and a refrigerator. Background Art

[0002] At present, with the rapid development of science and technology, the functions of refrigerators have become more diversified. With the diversification of refrigerator functions, the energy efficiency requirements for refrigerators are also increasing. During the use of the refrigerator, the surface temperature of the evaporator in the compartment is very low, and the humid air flows through the evaporator surface and is cooled. When the evaporator is lower than the air dew point temperature and lower than 0°C, the moisture in the air condenses and adheres to the evaporator surface to form a frost layer. Among them, the refrigeration evaporator in the refrigeration compartment and the freezing evaporator in the freezing compartment have the above problems, especially the refrigeration evaporator located in the refrigeration compartment, the above problems are particularly prominent. Therefore, how to defrost the refrigeration evaporator in the refrigeration compartment has become a technical problem that needs to be solved urgently.

[0003] In order to defrost a refrigerated evaporator in a cold storage room, the related art discloses a method for detecting the degree of frost of an air-cooled refrigerator, wherein the air-cooled refrigerator includes a cold storage room and a refrigeration system, wherein the refrigeration system includes a compressor, an evaporator and a fan to provide cold air to the cold storage room, and a temperature sensor is arranged in the cold storage room to detect the actual temperature in the cold storage room, and the method includes: obtaining the refrigeration time of the refrigeration system; judging whether the refrigeration time is greater than or equal to a first preset time, and if the result is yes, detecting the actual temperature in the cold storage room; judging whether the actual temperature is less than or equal to the preset temperature; and if not, determining that the degree of frost on the evaporator is serious; controlling the evaporator to stop working and keeping the fan in a working state to perform air defrosting on the evaporator; after air defrosting, when the air defrosting time is greater than or equal to the second preset time and the number of air defrosting times is greater than or equal to the preset number, controlling the heater to turn on to perform heating defrosting on the evaporator.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The related technology determines whether to perform air defrosting based on the comparison between the actual temperature in the cold storage room and the preset temperature. After air defrosting, if the air defrosting time meets the time condition and the air defrosting times meet the times condition, heating defrosting needs to be turned on. The related technology requires frequent turning on of the heating wire for heating defrosting. Since the power of the heating wire is much higher than the power of the refrigeration fan, frequent turning on of the heating wire for defrosting has the defect of increasing the defrosting energy consumption of the refrigerator and the energy consumption of the entire refrigerator.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a defrost control method and device for a refrigerator, and a refrigerator, so as to reduce the energy consumption of defrosting the refrigerator and the energy consumption of the entire refrigerator.

[0009] In some embodiments, the method includes: in response to a super-efficient energy-saving instruction, obtaining the refrigeration stage of the refrigerated compartment and the evaporator temperature value of the refrigerated evaporator; after the refrigeration period of the refrigerated compartment ends, controlling the refrigeration fan to continue to operate; during the operation stage of the refrigeration fan, if the evaporator temperature value meets the fan delay start condition, determining the refrigeration fan delay time, and controlling the refrigeration fan to continue running for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator.

[0010] In some embodiments, determining the delay duration of the refrigeration fan includes: determining the moment when the evaporator temperature value meets the fan delay start condition as the fan delay start moment; taking the fan delay start moment as the integration start moment, integrating the evaporator temperature value to obtain the integrated average temperature; determining the moment when the integrated average temperature meets the defrost exit condition as the fan delay end moment; determining the refrigeration fan delay duration according to the fan delay start moment and the fan delay end moment.

[0011] In some embodiments, it also includes: after the evaporator temperature meets the fan delay start condition, determining the upper limit threshold of the speed of the refrigeration fan and the gear corresponding to the set temperature of the refrigerated compartment; determining the target speed according to the upper limit threshold and the gear; wherein the gear is negatively correlated with the target speed; controlling the refrigeration fan to continuously run for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator, including: controlling the refrigeration fan to continuously run for the refrigeration fan delay time at the target speed.

[0012] In some embodiments, it also includes: when the integrated average temperature meets the defrost exit condition, the refrigerated evaporator is defrosted by heating according to the evaporator temperature value of the refrigeration compartment during the current refrigeration period, and the integrated average temperature is obtained by integrating the evaporator temperature value after the fan delay start time is taken as the integration start time, and the fan delay start time indicates the time when the evaporator temperature meets the fan delay start condition.

[0013] In some embodiments, defrosting the refrigerated evaporator by heating the wire according to the evaporator temperature value of the refrigeration compartment during the current refrigeration period, including: determining that the difference between the evaporator temperature value and the defrost critical temperature value at the refrigeration start time of the current refrigeration period is a first temperature deviation; determining that the difference between the evaporator temperature value and the defrost critical temperature value at the refrigeration end time of the current refrigeration period is a second temperature deviation; determining that the refrigerated evaporator is frosted and the defrosting of the refrigeration fan fails when the absolute value of the first temperature deviation is greater than or equal to the first deviation threshold and the absolute value of the second temperature deviation is greater than or equal to the second deviation threshold; and controlling the refrigerated evaporator to defrost by heating the wire.

[0014] In some embodiments, it also includes: controlling the refrigeration fan to continuously run the refrigeration fan delay time to air defrost the refrigeration evaporator, and then periodically defrosting the refrigeration evaporator by heating wire according to the heating wire defrost cycle threshold.

[0015] In some embodiments, it also includes: after responding to the super-efficient energy-saving instruction, obtaining the power consumption time of the refrigerator, the power consumption valley period of the area where the refrigerator is located, and the current time, the power consumption time is determined by the cumulative opening time of the compartment and the operating time of the refrigerator; when the power consumption time meets the first defrost start condition and the current time is in the power consumption valley period, controlling the freezing evaporator to perform heating wire defrosting; when the power consumption time meets the first defrost start condition and the current time is in the non-power consumption valley period, delaying the heating wire defrosting of the freezing evaporator until the time after the delay is in the power consumption valley period.

[0016] In some embodiments, delaying defrosting of the refrigeration evaporator by heating wires includes: obtaining an updated power usage time again during a delay phase; and controlling the refrigeration evaporator to perform defrosting by heating wires when the updated power usage time meets a second defrosting start condition.

[0017] In some embodiments, it also includes: in response to the super-efficient energy-saving instruction, obtaining the power consumption stage and the current time of the area where the refrigerator is located; wherein the power consumption stage includes a valley period, a level period and a peak period; when the current time is in the valley period, controlling the refrigerating compartment to lower the refrigerating compartment on / off temperature threshold to store cold energy in the food in the refrigerating compartment, and / or controlling the freezing compartment to lower the freezing compartment on / off temperature threshold to store cold energy in the food in the freezing compartment; after controlling the refrigerating compartment to lower the refrigerating compartment on / off temperature threshold and / or controlling the freezing compartment to lower the freezing compartment on / off temperature threshold, re-obtaining a new current time; when the new current time is in the level period or the peak period, controlling the refrigerating compartment to increase the refrigerating compartment on / off temperature threshold to release the cold energy in the refrigerating compartment into the refrigerating compartment, and / or controlling the freezing compartment to increase the freezing compartment on / off temperature threshold to release the cold energy in the freezing compartment into the freezing compartment.

[0018] In some embodiments, the device includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned defrost control method for a refrigerator when running the program instructions.

[0019] In some embodiments, the refrigerator includes: a refrigerator body; and the defrost control device for the refrigerator as described above, installed on the refrigerator body.

[0020] The defrost control method and device for a refrigerator and the refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0021] By adopting the defrost control method for refrigerators provided by the embodiment of the present disclosure, the refrigerator responds to the super-efficient energy-saving instruction to obtain the refrigeration stage of the refrigerated compartment and the evaporator temperature value of the refrigerated evaporator. After the refrigeration period of the refrigerated compartment ends, the refrigeration fan is controlled to continue to operate. If the evaporator temperature value meets the fan delay start condition during the refrigeration fan operation stage, the refrigeration fan delay time is determined and the refrigeration fan is controlled to continue to operate for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator. In this way, if the evaporator temperature value meets the fan delay start condition during the refrigeration fan operation stage, the refrigeration fan is only controlled to continue to operate within the delay time, and there is no need to continue to operate without stopping. After each refrigeration period, by delaying the operation of the refrigeration fan, time-sharing defrosting of the refrigeration evaporator can be achieved, thereby reducing the number of frequent opening times of the heating wire, which is conducive to reducing the energy consumption of defrosting the refrigerator, thereby reducing the overall energy consumption of the refrigerator.

[0022] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0024] Figure 1 is a schematic diagram of a defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0025] Figure 2 is a schematic diagram of another defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0026] Figure 3 is a schematic diagram of another defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0027] Figure 4 is a schematic diagram of another defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0028] Figure 5 is a schematic diagram of another defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0029] Figure 6 is a schematic diagram of another defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0030] Figure 7 is a schematic diagram of another defrost control method for a refrigerator provided by an embodiment of the present disclosure;

[0031] Figure 8-1 : is a schematic diagram of a refrigerator refrigeration operation curve of an embodiment of the present disclosure; wherein Revap represents the temperature curve of the defrost sensor, Rave represents the temperature curve of the refrigeration compartment, the solid line represents the power curve of the refrigerator compressor, and the horizontal axis represents the operating time after the compressor is normally started;

[0032] Figure 8-2 is a schematic diagram of another refrigerator refrigeration operation curve provided by an embodiment of the present disclosure; wherein Revap represents the temperature curve of the defrost sensor, Rave represents the temperature curve of the refrigeration compartment, the horizontal solid line represents the horizontal line corresponding to the defrost critical temperature value, and the horizontal axis represents the operating time after the compressor is normally started;

[0033] Fig. 9 is an application schematic diagram of an embodiment of the present disclosure;

[0034] Fig.10 is a schematic diagram of a defrost control device for a refrigerator provided by an embodiment of the present disclosure;

[0035] Fig.11 It is a schematic diagram of a refrigerator provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0037] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0038] Unless otherwise stated, the term "plurality" means two or more.

[0039] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0040] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0041] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0042] Combination Figure 1 As shown, the embodiment of the present disclosure provides a defrost control method for a refrigerator, comprising:

[0043] S01, the refrigerator responds to the super-efficient energy-saving instruction and obtains the refrigeration stage of the refrigeration compartment and the evaporator temperature value of the refrigeration evaporator.

[0044] In this step, the super-efficient energy-saving instruction is generated by the user, and the super-efficient energy-saving instruction is used to instruct the refrigerator to execute the super-efficient energy-saving mode. As an example, the refrigerator operation mode includes normal mode, standard energy-saving mode and super-efficient energy-saving mode. In the standard energy-saving mode, it can reduce the energy consumption of the entire refrigerator by about 10% in the normal mode. The super-efficient energy-saving mode can further reduce the energy consumption of the entire machine in the standard energy-saving mode. The refrigeration stage of the cold storage compartment consists of multiple refrigeration periods. During this refrigeration period, the compressor maintains the refrigeration operation of the cold storage compartment. After the end of this refrigeration period, the compressor stops. When the compartment temperature of the cold storage compartment is greater than or equal to the cold storage compartment startup temperature threshold, the compressor starts the refrigeration operation of the cold storage compartment again.

[0045] S02, after the refrigeration period of the refrigeration compartment ends, the refrigerator controls the refrigeration fan to continue to operate.

[0046] S03, when the refrigerator is in the refrigeration fan operation stage, if the evaporator temperature value meets the fan delay start condition, determine the refrigeration fan delay time, and control the refrigeration fan to continuously run for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator.

[0047] By adopting the defrost control method for refrigerators provided by the embodiment of the present disclosure, the refrigerator responds to the super-efficient energy-saving instruction to obtain the refrigeration stage of the refrigerated compartment and the evaporator temperature value of the refrigerated evaporator. After the refrigeration period of the refrigerated compartment ends, the refrigeration fan is controlled to continue to operate. If the evaporator temperature value meets the fan delay start condition during the refrigeration fan operation stage, the refrigeration fan delay time is determined and the refrigeration fan is controlled to continue to operate for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator. In this way, if the evaporator temperature value meets the fan delay start condition during the refrigeration fan operation stage, the refrigeration fan is only controlled to continue to operate within the delay time, and there is no need to continue to operate without stopping. After each refrigeration period, by delaying the operation of the refrigeration fan, time-sharing defrosting of the refrigeration evaporator can be achieved, thereby reducing the number of frequent opening times of the heating wire, which is conducive to reducing the energy consumption of defrosting the refrigerator, thereby reducing the overall energy consumption of the refrigerator.

[0048] It should be noted that in the disclosed embodiment, after the refrigeration period of the refrigerated compartment ends, the refrigerator controls the refrigeration fan to continue to operate. The subsequent step of determining the delay time of the refrigeration fan and controlling the refrigeration fan to continue to operate the refrigeration fan delay time after the evaporator temperature meets the fan delay start condition is performed on the basis of controlling the refrigeration fan to continue to operate.

[0049] Optionally, combined Figure 2 As shown, the refrigerator determines the delay time of the refrigeration fan, including:

[0050] S11, the refrigerator determines that the moment when the evaporator temperature value meets the fan delayed start condition is the fan delayed start moment.

[0051] In this step, the evaporator temperature value meets the delayed start condition of the fan, including: the evaporator temperature value is greater than or equal to the defrost critical temperature value. The defrost critical temperature value represents the critical temperature at which frost melts to form liquid water under standard atmospheric pressure, and the defrost critical temperature value may be 0°C.

[0052] S12, the refrigerator uses the delayed start time of the fan as the integration start time, and integrates the evaporator temperature value to obtain the integrated average temperature.

[0053] S13, the moment when the refrigerator determines that the integrated average temperature meets the defrost exit condition is the fan delay termination moment.

[0054] In this step, the integrated average temperature meets the defrost exit condition including: the integrated average temperature is greater than or equal to the defrost exit temperature threshold.

[0055] S14, the refrigerator determines the delay time of the refrigeration fan according to the delayed start time of the fan and the delayed end time of the fan.

[0056] In this way, during the operation stage of the refrigeration fan, if the evaporator temperature value meets the delayed start condition of the fan, the instantaneous evaporator temperature value only reflects the defrosting state at the moment corresponding to the evaporator temperature value, but cannot reflect the defrosting state of the refrigeration evaporator within a certain time period. This will cause the refrigeration evaporator to be defrosted incompletely or the delay time of the refrigeration fan to be too long, affecting the defrosting effect of the refrigerator and not conducive to reducing the energy consumption of the refrigerator. For this reason, in the process of controlling the refrigeration fan to continue to operate, if the evaporator temperature value meets the delayed start condition of the fan, the evaporator temperature value is integrated to obtain the integrated average temperature to obtain the defrosting state of the refrigeration evaporator in the continuous time period after the delayed start moment of the fan, and the moment when the integrated average temperature meets the defrosting exit condition is used as the delay termination moment of the fan, so that the refrigeration fan can be delayed for a reasonable time. At the same time, the refrigeration evaporator is completely defrosted by air through the delayed operation of the refrigeration fan to ensure the air defrosting effect of the refrigeration evaporator.

[0057] As an example, the refrigerator detects the evaporator temperature value T of the refrigeration evaporator through the defrost temperature sensor. sensor , in determining T sensor The moment when the temperature is ≥0℃ is the delayed start time of the fan. sensor Perform integral calculation to obtain the integrated average temperature T, where:

[0058] When T ≥ T exit When the integral temperature meets the defrost exit condition, it is determined that T≥T exit The moment of T is determined as the fan delay termination time. exit Indicates the defrost exit temperature threshold.

[0059] Figure 8-1 It is a schematic diagram of a refrigerator refrigeration operation curve of an embodiment of the present disclosure, Revap represents the temperature curve of the defrost sensor, Rave represents the temperature curve of the refrigerated compartment, and the solid line represents the power curve of the refrigerator compressor. The compressor is turned on at the time corresponding to 44.5h to start the refrigerator's current refrigeration operation, and is turned off at the end time of the time axis to end the refrigerator's current refrigeration operation, wherein the current refrigeration period represents the time period formed by the time corresponding to 44.5h and the end time of the aforementioned time axis. During the compressor's current refrigeration period, according to the temperature curve of the refrigerated compartment, it can be seen that the temperature of the refrigerated compartment is relatively stable.

[0060] Combination Figure 8-1 As shown in the figure, when the compressor starts the refrigeration operation, the evaporator temperature value T of the refrigeration evaporator detected by the defrost temperature sensor is sensor The power of the compressor remains unchanged at the time corresponding to 44.5h and 44.7h. At the same time, after the compressor starts the cooling operation, the evaporator temperature value Tsensor With the continuous operation of the compressor, the evaporator temperature value T sensor After reaching a peak value, it drops rapidly and reaches a valley value at the time corresponding to 45.1h. As the compressor continues to run, the evaporator temperature value T sensor After reaching the valley value, it rises rapidly and reaches 0℃ at a time slightly longer than 45.3h. sensor Meet T sensor ≥0℃, then the moment (i.e. the moment corresponding to point A) is determined as the delayed start moment of the fan. Accordingly, the refrigeration fan starts delayed operation at the moment corresponding to point A.

[0061] After the time corresponding to point A, the evaporator temperature value is integrated to determine whether T≥T exit The moment is the fan delay termination moment. Accordingly, when the refrigeration fan is delayed in operation, the fan stops running when the delay moment is the fan delay termination moment.

[0062] Combination Figure 3 As shown, the embodiment of the present disclosure also provides a defrost control method for a refrigerator, comprising:

[0063] S21, the refrigerator obtains the refrigeration stage of the refrigeration compartment and the evaporator temperature value of the refrigeration evaporator in response to the super-efficient energy-saving instruction.

[0064] S22, after the refrigeration period of the refrigerating compartment ends, the refrigerator controls the refrigerating fan to continue to operate.

[0065] S23, when the refrigerator is in the refrigeration fan operation stage, if the evaporator temperature value meets the fan delay start condition, determine the delay time of the refrigeration fan, and determine the upper limit threshold of the refrigeration fan speed and the gear corresponding to the set temperature of the refrigeration compartment. Among them, the set temperature of the refrigeration compartment indicates the specified temperature that the refrigeration compartment needs to reach during this refrigeration period. The lower the set temperature of the refrigeration compartment, the lower the specified temperature that the refrigeration compartment needs to reach during this refrigeration period. It should be noted that the set temperature of the refrigeration compartment is positively correlated with the gear. That is, the lower the set temperature of the refrigeration compartment, the lower the gear corresponding to the set temperature of the refrigeration compartment. The higher the set temperature of the refrigeration compartment, the higher the gear corresponding to the set temperature of the refrigeration compartment.

[0066] S24, the refrigerator determines a target speed according to the speed upper limit threshold and the gear position, wherein the gear position is negatively correlated with the target speed.

[0067] In this step, the difficulty of defrosting the refrigerated evaporator is related to the set temperature of the refrigerated compartment. The set temperature of the refrigerated compartment is related to the airflow temperature of the refrigerated fan circulating to the frost layer of the refrigerated evaporator. Specifically, the set temperature of the refrigerated compartment is positively correlated with the airflow temperature of the refrigerated fan circulating to the frost layer of the refrigerated evaporator. For example, the higher the set temperature of the refrigerated compartment, the higher the airflow temperature of the refrigerated fan circulating to the frost layer of the refrigerated evaporator, and the easier it is to defrost the refrigerated evaporator. The lower the set temperature of the refrigerated compartment, the lower the airflow temperature of the refrigerated fan circulating to the frost layer of the refrigerated evaporator, and the more difficult it is to defrost the refrigerated evaporator. Based on this, when the gear corresponding to the set temperature is low (that is, the set temperature is low), the refrigerated fan needs to run at a high speed, and when the gear corresponding to the set temperature is high (that is, the set temperature is high), the speed of the refrigerated fan can be appropriately reduced to ensure the defrosting effect while reducing the noise of the refrigerated fan. In order to take into account the upper limit threshold of the refrigeration fan, the embodiment of the present disclosure sets the gear corresponding to the set temperature to be negatively correlated with the target speed.

[0068] As an example, the refrigerator determines the target speed according to the speed upper limit threshold and the gear position, including: the target speed is n, n=n MAX -α×x, where n MAX , α, and x represent the upper speed limit threshold, the first proportional coefficient, and the gear position, respectively. MAX =2000rpm, α=100, 1≤x≤9, where rpm represents revolutions per minute, and the gear value of x can be 1st gear, 2nd gear, 3rd gear, ..., 9th gear. It should be noted that the specific value of the first proportional coefficient α can be determined according to the model of the refrigeration fan and / or the specific refrigeration situation of the refrigerator, and the embodiments of the present disclosure are not specifically limited to this.

[0069] S25, the refrigerator controls the refrigeration fan to continuously run at the target speed for the refrigeration fan delay time.

[0070] Using the defrost control method for refrigerators provided by the embodiment of the present disclosure, the refrigerator responds to the super-efficient energy-saving instruction to obtain the refrigeration stage of the refrigerated compartment and the evaporator temperature value of the refrigerated evaporator. After the refrigeration period of the refrigerated compartment ends, the refrigeration fan is controlled to continue to operate. During the operation stage of the refrigeration fan, if the evaporator temperature value meets the fan delay start condition, the refrigeration fan delay time is determined, and the upper limit threshold of the refrigeration fan speed and the gear corresponding to the set temperature of the refrigerated compartment are determined, and the target speed is determined according to the upper limit threshold and the gear. Then the refrigeration fan is controlled to continue to operate at the target speed for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator. In this way, during the operation stage of the refrigeration fan, if the evaporator temperature value meets the fan delay start condition, the refrigeration fan is only controlled to operate at the target speed within the delay time, and there is no need to continue to operate without stopping. At the same time, the refrigeration fan is operated at a target speed that matches the set temperature of the refrigeration compartment that reflects the amount of frost on the refrigeration evaporator, thereby ensuring the defrosting efficiency of the refrigeration evaporator and reducing the noise of the refrigeration fan during defrosting. In this way, the embodiment of the present disclosure can achieve time-sharing defrosting of the refrigeration evaporator by delaying the operation of the refrigeration fan after each refrigeration period, thereby reducing the number of frequent openings of the heating wire, improving the defrosting effect of the refrigeration evaporator, and helping to reduce the energy consumption of the refrigerator defrosting, thereby reducing the overall energy consumption of the refrigerator.

[0071] Optionally, the defrost control method for a refrigerator further includes: when the integrated average temperature meets the defrost exit condition, defrosting the refrigerated evaporator by heating the wire according to the evaporator temperature value of the refrigerated compartment during the current refrigeration period, the integrated average temperature is obtained by integrating the evaporator temperature value after the fan delayed start time as the integration start time, and the fan delayed start time indicates the time when the evaporator temperature meets the fan delayed start condition.

[0072] In this way, the disclosed embodiment does not enable heating wire defrosting when complete air defrosting is sufficient to achieve defrosting of the refrigerated evaporator, and enables heating wire defrosting based on the evaporator temperature of the refrigerated compartment during the current refrigeration period after the evaporator temperature value does not meet the fan delayed start condition, thereby taking into account the defrosting effect of the refrigerated evaporator and the defrosting energy consumption of the refrigerator, thereby further reducing the overall energy consumption of the refrigerator.

[0073] Optionally, combined Figure 4 As shown, the refrigeration evaporator is defrosted by heating wire according to the evaporator temperature value of the refrigeration compartment during the current refrigeration period, including:

[0074] S31, the refrigerator determines that the difference between the evaporator temperature value and the defrost critical temperature value at the refrigeration start time of the current refrigeration period is a first temperature deviation.

[0075] S32, the refrigerator determines that the difference between the evaporator temperature value and the defrosting critical temperature value at the refrigeration termination time of the current refrigeration period is the second temperature deviation.

[0076] S33, when the absolute value of the first temperature deviation is greater than or equal to the first deviation threshold and the absolute value of the second temperature deviation is greater than or equal to the second deviation threshold, the refrigerator determines that the refrigeration evaporator is frosted and the defrosting of the refrigeration fan is invalid.

[0077] S34, the refrigerator controls the refrigeration evaporator to perform heating wire defrosting.

[0078] In this way, when judging whether the evaporator temperature value satisfies the fan delay condition, there is still a case where it is not satisfied, and in the case where it is not satisfied, the refrigerated evaporator may also be frosted. For this reason, after judging that the evaporator temperature value does not meet the fan delay condition, the embodiment of the present disclosure further judges the following protection conditions: determining that the difference between the evaporator temperature and the defrosting critical temperature value in this refrigeration period is the first temperature deviation value and determining that the difference between the evaporator temperature value and the defrosting critical temperature value at the refrigeration termination time of this refrigeration period is the second temperature deviation. If the absolute value of the first temperature deviation is greater than or equal to the first deviation threshold value and the absolute value of the second temperature deviation is greater than or equal to the second deviation threshold value, it indicates that the cold capacity of the refrigerated evaporator cannot reach the refrigerated compartment normally or the heat exchange between the refrigerated evaporator and the refrigerated compartment is blocked. At this time, it can be judged that the complete air defrosting performed by the refrigeration fan while the refrigeration evaporator is frosted is invalid. If the refrigeration evaporator is still defrosted by the refrigeration fan at this time, the frost of the refrigeration evaporator will become more serious. Therefore, after determining that the refrigeration evaporator is frosted and the defrosting of the refrigeration fan fails, the embodiment of the present disclosure directly controls the refrigeration evaporator to perform heating wire defrosting. The embodiment of the present disclosure does not enable heating wire defrosting when complete air defrosting is sufficient to achieve defrosting of the refrigeration evaporator, and enables heating wire defrosting when it is clear that complete air defrosting cannot achieve normal defrosting, taking into account the defrosting effect of the refrigeration evaporator and the defrosting energy consumption of the refrigerator, further reducing the overall energy consumption of the refrigerator.

[0079] In a specific embodiment, Figure 8-2 It is a schematic diagram of another refrigerator refrigeration operation curve provided by an embodiment of the present disclosure; wherein Revap represents the temperature curve of the defrost sensor, Rave represents the temperature curve of the refrigeration compartment, and the horizontal solid line represents the horizontal line corresponding to the defrost critical temperature value.

[0080] Combination Figure 8-2 As shown in the figure, the defrost critical temperature is 0°C. B represents the refrigeration start time of this refrigeration period, and C represents the refrigeration end time of this refrigeration period. The period between B and C constitutes this refrigeration period.

[0081] ΔT H Indicates that the difference between the evaporator temperature at the time of refrigeration start in this refrigeration period and the defrost critical temperature of 0°C is the first temperature deviation, ΔT LThe difference between the evaporator temperature value at the refrigeration termination moment of this refrigeration period and the defrosting critical temperature value of 0°C is the second temperature deviation.

[0082] The refrigerator can be adjusted according to |ΔT H | and the first deviation threshold and |ΔT L |The relationship between the magnitude of the second deviation threshold value is used to determine whether the refrigeration evaporator is frosted and whether the refrigeration fan defrosts and fails, and after determining that the refrigeration evaporator is frosted and the refrigeration fan defrosts and fails, the refrigeration evaporator is controlled to defrost the heating wire.

[0083] Combination Figure 5 As shown, the embodiment of the present disclosure also provides a defrost control method for a refrigerator, comprising:

[0084] S41, the refrigerator obtains the refrigeration stage of the refrigeration compartment and the evaporator temperature value of the refrigeration evaporator in response to the super-efficient energy-saving instruction.

[0085] S42, after the refrigeration period of the refrigerating compartment ends, the refrigerator controls the refrigerating fan to continue to operate.

[0086] S43, when the refrigerator is in the refrigeration fan operation stage, if the evaporator temperature value meets the fan delay start condition, determine the refrigeration fan delay time, and control the refrigeration fan to continue running for the refrigeration fan delay time to air defrost the refrigeration evaporator.

[0087] S44, the refrigerator controls the refrigerating fan to continuously run for the refrigerating fan delay time to air-defrost the refrigerating evaporator, and then periodically defrosts the refrigerating evaporator by heating wire according to the heating wire defrosting cycle threshold.

[0088] In this step, the heating wire defrost cycle threshold may be an integer multiple of 24 hours. As an example, the heating wire defrost cycle threshold may be 48 hours, 72 hours or 96 hours. It is understandable that the heating wire defrost cycle threshold may also be determined according to the specific model of the refrigerator, and the embodiments of the present disclosure may not be specifically limited to this.

[0089] By adopting the defrost control method for refrigerators provided by the embodiment of the present disclosure, the refrigerator responds to the super-efficient energy-saving instruction to obtain the refrigeration stage of the refrigerated compartment and the evaporator temperature value of the refrigerated evaporator. After the refrigeration period of the refrigerated compartment ends, the refrigeration fan is controlled to continue to operate. If the evaporator temperature value meets the fan delay start condition during the refrigeration fan operation stage, the refrigeration fan delay time is determined and the refrigeration fan is controlled to continue to operate for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator. In this way, if the evaporator temperature value meets the fan delay start condition during the refrigeration fan operation stage, the refrigeration fan is only controlled to continue to operate within the delay time, and there is no need to continue to operate without stopping. After each refrigeration period, by delaying the operation of the refrigeration fan, time-sharing defrosting of the refrigeration evaporator can be achieved, thereby reducing the number of frequent opening times of the heating wire, which is conducive to reducing the energy consumption of defrosting the refrigerator and reducing the overall energy consumption of the refrigerator.

[0090] Since the energy consumption of air defrosting of the refrigeration fan is much less than that of defrosting by heating wire, however, the effect of air defrosting of the refrigeration fan is not as good as defrosting by heating wire in the same time period. In order to ensure the defrosting effect of the refrigeration evaporator, the embodiment of the present disclosure controls the refrigeration fan to continuously run the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator, and also periodically performs defrosting by heating wire on the refrigeration evaporator according to the defrosting cycle threshold of the heater, so that the defrosting effect of the refrigeration evaporator is more thorough.

[0091] Combination Figure 6 As shown, the embodiment of the present disclosure also provides a defrost control method for a refrigerator, comprising:

[0092] S51, the refrigerator obtains the refrigeration stage of the refrigeration compartment and the evaporator temperature value of the refrigeration evaporator in response to the super-efficient energy-saving instruction.

[0093] S52, after the refrigeration period of the refrigerating compartment ends, the refrigerator controls the refrigerating fan to continue to operate.

[0094] S53, when the refrigerator is in the refrigeration fan operation stage, if the evaporator temperature value meets the fan delay start condition, determine the refrigeration fan delay time, and control the refrigeration fan to continue to run for the refrigeration fan delay time to air defrost the refrigeration evaporator.

[0095] S54, after the refrigerator responds to the super-efficient energy-saving instruction, the power consumption time of the refrigerator, the power consumption valley period of the area where the refrigerator is located, and the current time are obtained. The power consumption time is determined by the accumulated opening time of the compartment and the operation time of the refrigerator.

[0096] In this step, the power consumption time t of the refrigerator is obtained in the following manner: t = β × t R +γ×t F +t A ; Among them, the cumulative opening time of the compartments includes the cumulative opening time of the refrigerated compartment and the cumulative opening time of the frozen compartment, tR ,t F ,t A , β, and γ represent the cumulative opening time of the refrigerating compartment, the cumulative opening time of the freezing compartment, the refrigerator operation time, the second proportional coefficient, and the third proportional coefficient, respectively. In the above formula, the second proportional coefficient and the third proportional coefficient are determined according to the defrosting cycle of the refrigerator.

[0097] S55, when the power consumption time meets the first defrost start condition and the current moment is in the power consumption valley period, the refrigerator controls the freezing evaporator to perform heating wire defrosting.

[0098] In this step, the power usage time meets the first defrost start condition, including: the power usage time is greater than or equal to the first defrost start time.

[0099] S56, when the power usage time meets the first defrost start condition and the current moment is in the non-power usage valley period, the refrigerator delays defrosting the freezing evaporator by heating the wire until the moment after the delay is in the power usage valley period.

[0100] The defrost control method for refrigerators provided by the embodiment of the present disclosure is adopted. After the embodiment of the present disclosure responds to the super-efficient energy-saving instruction, the power consumption time of the refrigerator, the power consumption valley section of the area where the refrigerator is located, and the current time are obtained. If the power consumption time meets the first defrost start condition, it indicates that the frozen evaporator has been frosted. If the current moment is in the power consumption valley section, it indicates that defrosting can be performed in the low-peak power consumption section at this time. Therefore, the embodiment of the present disclosure defrosts the frozen evaporator with a heating wire when the power consumption time meets the first defrost start condition and the current moment is in the power consumption valley section. When the power consumption time meets the first defrost start condition and the current moment is in the non-power consumption valley section, the defrosting of the frozen evaporator with a heating wire is delayed until the moment after the delay is in the power consumption valley section. In this way, the embodiment of the present disclosure can defrost the frozen evaporator with a heating wire in the power consumption valley section when it is determined that the frozen evaporator has been frosted, and defrost the frozen evaporator in the non-power consumption valley section to reduce the defrosting energy consumption of the refrigerator and the energy consumption of the whole machine.

[0101] Optionally, the refrigerator delays defrosting of the frozen evaporator by heating the wire, including:

[0102] During the delay phase, the refrigerator obtains updated power usage time again.

[0103] When the updated power consumption time meets the second defrost start condition, the refrigerator controls the freezing evaporator to perform heating wire defrosting. In this step, the power consumption time meets the second defrost start condition, including: the power consumption time is greater than or equal to the second defrost start time. Among them, the second defrost start time is greater than the first defrost start time.

[0104] In this way, when the freezer compartment of the refrigerator is in a high humidity environment, frequent door opening by the user will accelerate the frost formation of the evaporator. Setting the second defrost start condition here and configuring the second defrost start time to be longer than the first defrost start time can prevent the evaporator from being blocked by frost due to frequent door opening by the user after the refrigerator enters the delay stage.

[0105] Combination Figure 7 As shown, the embodiment of the present disclosure also provides a defrost control method for a refrigerator, comprising:

[0106] S61, the refrigerator obtains the refrigeration stage of the refrigeration compartment and the evaporator temperature value of the refrigeration evaporator in response to the super-efficient energy-saving instruction.

[0107] S62, after the refrigeration period of the refrigerating compartment ends, the refrigerator controls the refrigerating fan to continue to operate.

[0108] S63, when the refrigerator is in the refrigeration fan operation stage, if the evaporator temperature value meets the fan delay start condition, determine the refrigeration fan delay time, and control the refrigeration fan to continue to run for the refrigeration fan delay time to air defrost the refrigeration evaporator.

[0109] S64, the refrigerator responds to the super-efficient energy-saving instruction and obtains the power consumption stage and current time of the area where the refrigerator is located. The power consumption stage includes a power consumption valley stage, a power consumption level stage and a power consumption peak stage.

[0110] S65, when the current moment is in the off-peak period of electricity consumption, the refrigerator controls the refrigerating compartment to lower the temperature threshold of the refrigerating compartment on and off to store cold energy in the food in the refrigerating compartment, and / or controls the freezing compartment to lower the temperature threshold of the freezing compartment on and off to store cold energy in the food in the freezing compartment.

[0111] In this step, the refrigeration compartment on / off temperature threshold includes the refrigeration compartment on temperature threshold and the refrigeration compartment off temperature threshold. Wherein, when the compartment temperature of the refrigeration compartment is greater than or equal to the refrigeration compartment on temperature threshold, the refrigerator controls the compressor to start refrigeration of the refrigeration compartment; when the compartment temperature of the refrigeration compartment is less than or equal to the refrigeration compartment on temperature threshold, the refrigerator controls the compressor to stop refrigeration of the refrigeration compartment. When the compartment temperature of the freezer compartment is greater than or equal to the freezer compartment on temperature threshold, the refrigerator controls the compressor to start refrigeration of the freezer compartment; when the compartment temperature of the freezer compartment is less than or equal to the freezer compartment on temperature threshold, the refrigerator controls the compressor to stop refrigeration of the freezer compartment.

[0112] S66, the refrigerator re-obtains a new current time after controlling the refrigerating compartment to lower the refrigerating compartment on / off temperature threshold and / or controlling the freezing compartment to lower the freezing compartment on / off temperature threshold.

[0113] S67, when the new current moment is in the level usage segment or the peak usage segment, the refrigerator controls the refrigerating compartment to increase the refrigerating compartment on / off temperature threshold to release the coldness of the refrigerating compartment into the refrigerating compartment, and / or controls the freezing compartment to increase the freezing compartment on / off temperature threshold to release the coldness of the freezing compartment into the freezing compartment.

[0114] The defrosting control method for refrigerators provided by the embodiment of the present disclosure is adopted. The embodiment of the present disclosure responds to the super-efficient energy-saving instruction to obtain the power consumption stage and the current time of the area where the refrigerator is located. If the current time is in the power consumption valley section, it indicates that the current time is in the low-peak power consumption period. At this time, the cold energy can be stored in the food in the food in the cold storage compartment by controlling the refrigeration compartment to lower the temperature threshold of the refrigeration compartment switch on and off, and the cold energy can be stored in the food in the food in the freezer compartment by controlling the freezer compartment to lower the temperature threshold of the freezer compartment switch on and off. If the current time is in the level consumption section or the peak consumption section, the cold energy of the food can be released to the refrigeration compartment by controlling the refrigeration compartment to raise the temperature threshold of the refrigeration compartment switch on and off, and the cold energy of the food can be released to the freezer compartment by controlling the freezer compartment to raise the temperature threshold of the freezer compartment switch on and off. Here, refrigeration is performed by using the cold energy stored in the valley section food, which can reduce the start-up period of the compressor refrigeration in the level consumption section or the peak consumption section, thereby greatly reducing the overall energy consumption of the refrigerator.

[0115] It should be noted that in the embodiment of the present disclosure, the execution order of steps S65 to S68 and steps S61 to S64 is not specific.

[0116] In practical applications, such as Fig. 9 As shown, the defrost control method for a refrigerator specifically performs the following steps:

[0117] S101, after the refrigerator responds to the super-efficient energy-saving instruction, the power consumption time of the refrigerator, the power consumption valley period of the area where the refrigerator is located, and the current time are obtained.

[0118] S102: When the power consumption time is greater than or equal to the first defrosting start time and the current time is in the power consumption valley period, the refrigerator controls the freezing evaporator to perform heating wire defrosting. Or,

[0119] S103, when the power consumption time is greater than or equal to the first defrost start time and the current moment is in the non-power consumption valley period, the refrigerator delays the defrosting of the freezing evaporator by heating the wire until the moment after the delay is in the power consumption valley period. When the updated power consumption time in the delay stage is greater than or equal to the second defrost start time, the freezing evaporator is directly controlled to defrost by heating the wire.

[0120] S104, the refrigerator obtains the refrigeration stage of the refrigerating compartment and the evaporator temperature value of the refrigerating evaporator, and controls the refrigerating fan to continue to operate after the refrigerating period of the refrigerating compartment ends.

[0121] S105, the refrigerator determines the delay time of the refrigeration fan, the upper limit threshold of the refrigeration fan speed and the gear position x corresponding to the set temperature of the refrigeration compartment, and MAX -α×x determines the target speed n.

[0122] S106: When the refrigerator evaporator temperature value is greater than or equal to the defrost critical temperature value 0°C, determine whether the evaporator temperature value is greater than or equal to the defrost critical temperature value 0°C. If so, execute step S107; if not, return to execute step S104.

[0123] S107, the refrigerator determines the moment when the evaporator temperature value is greater than or equal to 0°C as the delayed start moment of the fan, and performs integral calculation to obtain the integral average temperature T.

[0124] S108, refrigerator determines T≥T exit Is it established? If so, execute S109; if not, execute S111.

[0125] S109, the refrigerator determines T≥T exit The moment of establishment is determined as the fan delay termination moment, and the time period formed by the fan delay start moment and the fan delay termination moment is the refrigeration fan delay duration, and the refrigeration fan is controlled to continue running at the target speed for the refrigeration fan delay duration.

[0126] S110: The refrigerator stops running after the refrigeration fan continuously runs at the target speed n for the refrigeration fan delay time, and periodically defrosts the refrigeration evaporator with the heating wire according to the heating wire defrosting cycle threshold of 72h after the refrigeration fan stops running.

[0127] S111, the refrigerator determines that the difference between the evaporator temperature value and the defrosting critical temperature value at the refrigeration start time of this refrigeration period is the first temperature deviation ΔT H , and determine that the difference between the evaporator temperature value and the defrosting critical temperature value at the end of the refrigeration period of this refrigeration period is the second temperature deviation ΔT L .

[0128] S112, Refrigerator judgment |ΔT H Is | greater than or equal to the first deviation threshold and |ΔT L |Is it greater than or equal to the second deviation threshold? If so, execute step S113; otherwise, return to execute step S108.

[0129] S113, the refrigerator controls the refrigeration evaporator to perform a heating wire defrosting.

[0130] Combination Fig.10As shown, the embodiment of the present disclosure provides a defrost control device 70 for a refrigerator, including a processor 700 and a memory 701. Optionally, the device 70 may also include a communication interface 702 and a bus 703. The processor 700, the communication interface 702, and the memory 701 may communicate with each other through the bus 703. The communication interface 702 may be used for information transmission. The processor 700 may call the logic instructions in the memory 701 to execute the defrost control method for a refrigerator of the above embodiment.

[0131] In addition, the logic instructions in the memory 701 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0132] The memory 701 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 700 executes the function application and data processing by running the program instructions / modules stored in the memory 701, that is, the defrost control method for the refrigerator in the above embodiment is implemented.

[0133] The memory 701 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 701 may include a high-speed random access memory and may also include a non-volatile memory.

[0134] Combination Fig.11 As shown, the embodiment of the present disclosure provides a refrigerator 800, including: a refrigerator body, and the above-mentioned defrost control device 70 for the refrigerator. The defrost control device 70 for the refrigerator is installed on the refrigerator body. The installation relationship described here is not limited to placement inside the refrigerator body, but also includes installation connections with other components of the refrigerator 100, including but not limited to physical connections, electrical connections or signal transmission connections, etc. It can be understood by those skilled in the art that the defrost control device 70 for the refrigerator can be adapted to a feasible refrigerator body, thereby realizing other feasible embodiments.

[0135] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned defrost control method for a refrigerator.

[0136] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0137] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0138] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0139] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0140] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A defrosting control method for a refrigerator, characterized in that: include: In response to the super-efficient energy-saving instruction, obtaining the refrigeration stage of the refrigerated compartment and the evaporator temperature value of the refrigerated evaporator; After the refrigeration period of the refrigerated room ends, the refrigeration fan is controlled to continue to operate; During the operation stage of the refrigeration fan, if the evaporator temperature value meets the fan delay start condition, the refrigeration fan delay time is determined, and the refrigeration fan is controlled to continuously run for the refrigeration fan delay time to perform air defrosting on the refrigeration evaporator.

2. The method according to claim 1, characterized in that: Determine the delay time of the refrigeration fan, including: Determine the moment when the evaporator temperature value meets the fan delayed start condition as the fan delayed start moment; Taking the delayed start time of the fan as the integration start time, the evaporator temperature value is integrated to obtain the integrated average temperature; Determine the moment when the integrated average temperature meets the defrost exit condition as the fan delay termination moment; Determine the delay time of the refrigeration fan based on the fan delay start time and the fan delay end time.

3. The method according to claim 1, characterized in that Also includes: After the evaporator temperature meets the fan delayed start condition, determine the upper limit threshold of the refrigeration fan speed and the gear corresponding to the set temperature of the refrigeration compartment; Determine the target speed according to the speed upper limit threshold and the gear position; wherein the gear position is negatively correlated with the target speed; Control the refrigeration fan to continue running and the refrigeration fan delay time to defrost the refrigeration evaporator, including: Control the refrigeration fan to continuously run at the target speed for the refrigeration fan delay time.

4. The method according to claim 1, characterized in that: Also includes: When the integrated average temperature meets the defrost exit conditions, the refrigerated evaporator is defrosted by heating according to the evaporator temperature value of the refrigeration compartment during this refrigeration period. The integrated average temperature is obtained by integrating the evaporator temperature value after the fan delay start time as the integration start time. The fan delay start time indicates the time when the evaporator temperature meets the fan delay start conditions.

5. The method according to claim 4, characterized in that According to the evaporator temperature value of the refrigeration compartment during the current refrigeration period, the refrigeration evaporator is defrosted by heating wire, including: Determine that the difference between the evaporator temperature value and the defrost critical temperature value at the refrigeration start time of this refrigeration period is the first temperature deviation; Determine that the difference between the evaporator temperature value and the defrosting critical temperature value at the refrigeration termination time of this refrigeration period is the second temperature deviation; When the absolute value of the first temperature deviation is greater than or equal to the first deviation threshold and the absolute value of the second temperature deviation is greater than or equal to the second deviation threshold, it is determined that the refrigeration evaporator is frosted and the defrosting of the refrigeration fan fails; Control the refrigeration evaporator to defrost the heating wire.

6. The method according to any one of claims 1 to 5, characterized in that: Also includes: After the refrigeration fan is controlled to continuously run for a delay time of the refrigeration fan to air-defrost the refrigeration evaporator, the refrigeration evaporator is periodically defrosted by heating wire according to the heating wire defrost cycle threshold.

7. The method according to any one of claims 1 to 5, characterized in that: Also includes: After responding to the super-efficient energy-saving instruction, the power consumption time of the refrigerator, the power consumption valley period of the area where the refrigerator is located, and the current time are obtained. The power consumption time is determined by the accumulated opening time of the compartment and the operation time of the refrigerator; When the power consumption time meets the first defrosting start condition and the current time is in the power consumption valley period, the refrigeration evaporator is controlled to perform heating wire defrosting; When the power consumption time meets the first defrost start condition and the current moment is in the non-power consumption valley period, the defrosting of the refrigeration evaporator by the heating wire is delayed until the moment after the delay is in the power consumption valley period.

8. The method according to claim 7, characterized in that Delayed defrosting of the refrigerated evaporator with heating wire, including: In the delay phase, the updated power consumption duration is obtained again; When the updated power consumption time meets the second defrosting start condition, the refrigeration evaporator is controlled to perform heating wire defrosting.

9. The method according to any one of claims 1 to 5, characterized in that: Also includes: In response to the super-efficient energy-saving instruction, the power consumption stage and the current time of the area where the refrigerator is located are obtained; wherein the power consumption stage includes a power consumption valley stage, a power consumption level stage and a power consumption peak stage; When the current time is in the off-peak period of electricity consumption, the refrigerating compartment is controlled to lower the temperature threshold of the refrigerating compartment on and off so as to store cold energy in the food in the refrigerating compartment, and / or the freezing compartment is controlled to lower the temperature threshold of the freezing compartment on and off so as to store cold energy in the food in the freezing compartment; After controlling the refrigerating compartment to lower the refrigerating compartment on / off temperature threshold and / or controlling the freezing compartment to lower the freezing compartment on / off temperature threshold, a new current time is obtained again; When the new current moment is in the level consumption period or the peak consumption period, the refrigerating compartment is controlled to increase the refrigerating compartment on / off temperature threshold to release the coldness of the refrigerating compartment into the refrigerating compartment, and / or the freezing compartment is controlled to increase the freezing compartment on / off temperature threshold to release the coldness of the freezing compartment into the freezing compartment.

10. A defrost control device for a refrigerator, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the defrost control method for a refrigerator according to any one of claims 1 to 9 when running the program instructions.

11. A refrigerator, characterized in that: include: Refrigerator body; The defrost control device for a refrigerator as claimed in claim 10 is installed on the refrigerator body.

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