Method and device for controlling defrosting of refrigerator, refrigerator and computer readable storage medium

Abstract

The invention relates to the technical field of refrigerator defrosting control, and discloses a refrigerator defrosting control method which comprises the steps that the intrinsic frosting amount and the intrusive frosting amount of a refrigerator chamber are determined; the product of the water evaporation rate of the refrigerator chamber and the defrosting duration threshold value under the condition that the refrigerator door body is kept closed serves as a first defrosting threshold value; under the condition that the sum of the intrinsic frosting amount and the invasion frosting amount of the refrigerator chamber is larger than or equal to a first defrosting threshold value, the refrigerator is controlled to execute defrosting operation; the intrinsic frosting amount refers to the evaporator frosting amount caused by water evaporation in a refrigerator chamber, and the intrusive frosting amount refers to the evaporator frosting amount caused by air vapor entering the chamber when the door of the refrigerator is opened. According to the scheme, the defrosting time of the refrigerator can be accurately determined, the situation that defrosting is too frequent in the low-humidity environment is effectively avoided, the operation energy consumption of the refrigerator is remarkably reduced, and meanwhile the risk that an evaporator is blocked by frost is reduced. The invention further discloses a device for controlling defrosting of the refrigerator, the refrigerator and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, for example, to a method, a device, a refrigerator, and a computer-readable storage medium for controlling defrosting of a refrigerator. Background Art

[0002] Currently, defrost control of air-cooled refrigerators mainly determines the defrosting timing based on conditions such as the running time of the refrigerator, the user's door opening time, and the ambient temperature. Although this method can meet the defrosting requirements of the refrigerator to a certain extent, it has obvious limitations. Since the influence of air humidity is not considered, the frost accumulation amount on the evaporator cannot be accurately predicted, resulting in an inaccurate opening timing of the defrosting system. In a low-humidity environment, defrosting may be too frequent, thereby increasing the operating energy consumption of the refrigerator.

[0003] In order to solve the technical problem of inaccurate defrosting timing in the prior art, related technologies have disclosed a method and a device for defrosting, a refrigerator, and a computer-readable storage medium method. By detecting the dew point temperature and moisture content of the air in the environment where the refrigerator is located, calculating the mass of water vapor entering the refrigerator when the refrigerator door is opened, and combining the size parameters of the fin evaporator to determine the maximum frost accumulation amount, the defrosting program is started.

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

[0005] Although the related technologies consider the influence of air humidity on frost formation to a certain extent, they ignore the contribution of the evaporation of food moisture in the compartment to the frost formation on the evaporator, which may lead to inaccurate calculation of the maximum frost accumulation amount during long-term operation, thereby increasing the risk of frost blockage of the evaporator.

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

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide a method, a device, a refrigerator, and a computer-readable storage medium for controlling defrosting of a refrigerator, which can achieve more accurate defrost control of the refrigerator.

[0009] In some embodiments, the method for controlling defrosting of a refrigerator includes: determining the intrinsic frosting amount and the intrusion frosting amount of the refrigerator compartment; taking the product of the moisture evaporation rate of the refrigerator compartment and the defrosting duration threshold when the refrigerator door is kept closed as the first defrosting threshold; controlling the refrigerator to perform a defrosting operation when the sum of the intrinsic frosting amount and the intrusion frosting amount of the refrigerator compartment is greater than or equal to the first defrosting threshold; wherein, the intrinsic frosting amount refers to the frosting amount on the evaporator caused by the moisture evaporation in the refrigerator compartment, and the intrusion frosting amount refers to the frosting amount on the evaporator caused by the entry of air water vapor into the compartment when the refrigerator door is opened.

[0010] In some embodiments, the method for controlling defrosting of a refrigerator includes: obtaining the internal moisture evaporation rate of the refrigerator compartment and the operating duration of the refrigerator; taking the product of the internal moisture evaporation rate of the refrigerator compartment and the operating duration of the refrigerator as the intrinsic frosting amount of the refrigerator compartment.

[0011] In some embodiments, the method for controlling defrosting of a refrigerator includes: obtaining the ambient temperature and ambient humidity where the refrigerator is located; determining the saturated water vapor pressure corresponding to the current ambient temperature according to the ambient temperature; determining the intrusion frosting amount of the refrigerator compartment according to the saturated water vapor pressure corresponding to the current ambient temperature, ambient humidity, compartment volume, ambient temperature, compartment full-load time, and the door opening time when the user uses the refrigerator.

[0012] In some embodiments, the method for controlling defrosting of a refrigerator includes: when the sum of the intrinsic frosting amount and the intrusion frosting amount of the refrigerator compartment is greater than or equal to the first defrosting threshold, obtaining the current time; controlling the refrigerator to perform a defrosting operation when the current time is in the off-peak power consumption period.

[0013] In some embodiments, the method for controlling defrosting of a refrigerator includes: when the current time is not in the off-peak power consumption period, determining a second defrosting threshold; obtaining the intrinsic frosting amount and the intrusion frosting amount of the refrigerator compartment again; controlling the refrigerator to perform a defrosting operation if the sum of the intrinsic frosting amount and the intrusion frosting amount obtained again is greater than or equal to the second defrosting threshold.

[0014] In some embodiments, the method for controlling defrosting of a refrigerator includes: obtaining the ambient humidity where the refrigerator is located again; determining the second defrosting threshold according to the ambient humidity where the refrigerator is located and the first defrosting threshold.

[0015] In some embodiments, the method for controlling defrosting of a refrigerator includes: obtaining the evaporator temperature collected by a temperature sensor; controlling the refrigerator to stop the defrosting operation when the evaporator temperature is greater than a preset temperature.

[0016] In some embodiments, the device for controlling defrosting of a refrigerator includes: a processor and a memory storing program instructions, and the processor is configured to execute the aforementioned method for controlling defrosting of a refrigerator when running the program instructions.

[0017] In some embodiments, the refrigerator includes: a refrigerator body; and the aforementioned device for controlling defrosting of a refrigerator, which is installed on the refrigerator body.

[0018] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are running, they are used to cause a computer to execute the aforementioned method for controlling defrosting of a refrigerator.

[0019] The method, device, refrigerator, and computer-readable storage medium for controlling defrosting of a refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] By comprehensively considering the intrinsic frost formation amount caused by moisture evaporation in the compartment and the intrusion frost formation amount caused by water vapor in the air entering the compartment when the refrigerator door is opened, and comparing it with the first defrosting threshold determined based on the moisture evaporation rate and the defrosting duration threshold, this solution realizes precise defrosting control. With this solution, the defrosting timing of the refrigerator can be determined more accurately, effectively avoiding the situation of overly frequent defrosting in a low-humidity environment, significantly reducing the operating energy consumption of the refrigerator. At the same time, the risk of frost blockage of the evaporator is reduced, the operating efficiency and reliability of the refrigerator are improved, the service life of the equipment is extended, and a more efficient, energy-saving, and stable defrosting solution is provided for users.

[0021] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. Description of the Drawings

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a proportional limitation, and among them:

[0023] Figure 1 is a schematic diagram of a method for controlling defrosting of a refrigerator provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic diagram of a method for determining the intrinsic frost formation amount provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic diagram of a method for determining the intrusion frost formation amount provided by an embodiment of the present disclosure;

[0026] Figure 4 is another schematic diagram of a method for controlling defrosting of a refrigerator provided by an embodiment of the present disclosure;

[0027] Figure 5 It is a schematic diagram of another device for controlling defrosting of a refrigerator provided by an embodiment of the present disclosure;

[0028] Figure 6 It is a schematic diagram of the structure of a refrigerator provided by an embodiment of the present disclosure. Detailed implementation manners

[0029] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and explanation, and are not used to limit the embodiments of the present disclosure. In the following technical descriptions, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner.

[0030] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement 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 inclusion.

[0031] Unless otherwise specified, the term "plurality" means two or more.

[0032] In the embodiments of the present disclosure, the character " / " indicates that the front and rear objects are in an "or" relationship. For example, A / B means: A or B.

[0033] The term "and / or" is a description of the associated relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0034] The term "corresponding" may refer to an associated relationship or a binding relationship. A corresponding to B means that there is an associated relationship or a binding relationship between A and B.

[0035] Figure 1 It is a schematic diagram of a method for controlling defrosting of a refrigerator provided by an embodiment of the present disclosure; in combination with Figure 1 As shown, optionally, an embodiment of the present disclosure provides a method for controlling defrosting of a refrigerator, including:

[0036] S11, the refrigerator determines the intrinsic frost formation amount and the intrusion frost formation amount of the refrigerator compartment.

[0037] S12, the refrigerator uses the product of the moisture evaporation rate of the refrigerator compartment and the defrosting duration threshold when the refrigerator door is kept closed as the first defrosting threshold.

[0038] S13, when the sum of the intrinsic frosting amount and the intrusion frosting amount in the refrigerator compartment is greater than or equal to the first defrosting threshold, the refrigerator controls the refrigerator to perform a defrosting operation.

[0039] In this solution, the intrinsic frosting amount refers to the frosting amount on the evaporator caused by the moisture evaporation in the refrigerator compartment. In one example, humidity sensors and temperature sensors can be deployed around the refrigerator compartment and the evaporator, and the temperature and humidity data on the surface of the compartment and the evaporator are monitored and collected in real time. At the same time, operation parameters such as the refrigerator running time and the number of door openings are recorded. The refrigerator preprocesses and correlates the collected data, establishes a mass transfer model to describe the moisture evaporation process, and combines it with a supersaturated frosting model to predict the frost layer growth rate on the evaporator surface. In addition, the refrigerator uses an optical frosting sensor and a capacitive sensor to assist in verifying the frost layer thickness, and calibrates the model parameters by comparing the experimental data with the model prediction results to improve the prediction accuracy. The refrigerator comprehensively combines the model prediction and the sensor data to calculate the frosting amount on the evaporator caused by the moisture evaporation in the compartment. With this solution, by combining multi-sensor data collection and model analysis, the frosting amount on the refrigerator evaporator caused by the moisture evaporation in the refrigerator compartment can be accurately predicted. In another example, the refrigerator determines the intrinsic frosting amount of the refrigerator compartment, including: the refrigerator obtains the internal moisture evaporation rate of the refrigerator compartment and the running duration of the refrigerator. The refrigerator uses the product of the internal moisture evaporation rate of the refrigerator compartment and the running duration of the refrigerator as the intrinsic frosting amount of the refrigerator compartment. With this solution, by calculating the product of the internal moisture evaporation rate of the refrigerator compartment and the running duration, the intrinsic frosting amount of the refrigerator compartment can be quickly estimated, providing a basis for frosting prediction and defrosting control.

[0040] Optionally, the intrusion frosting amount refers to the frosting amount on the evaporator caused by the entry of air water vapor into the compartment when the refrigerator door is opened. In one way, the refrigerator sets the weight coefficient of the door opening time according to different types of compartments, combines the number of door openings and the door opening time to calculate the corrected time difference, and then estimates the intrusion frosting amount. For example, the door opening weight of the refrigerating compartment may be higher than that of the freezing compartment because the door opening frequency of the refrigerating compartment is usually higher and the influence of temperature change on frosting is more significant. With this solution, by setting the weight coefficient of the door opening time for different compartments and combining the number of door openings and time to calculate the corrected time difference, the intrusion frosting amount of the refrigerator compartment can be accurately estimated. In another example, the refrigerator obtains the ambient temperature and humidity where the refrigerator is located. The refrigerator determines the saturated water vapor pressure corresponding to the current ambient temperature according to the ambient temperature. The refrigerator determines the intrusion frosting amount of the refrigerator compartment according to the saturated water vapor pressure corresponding to the current ambient temperature, the ambient humidity, the compartment volume, the ambient temperature, the door opening time required for all the water vapor in the air to enter the compartment, and the door opening time when the user uses the refrigerator. With this solution, by obtaining the ambient temperature and humidity, calculating the saturated water vapor pressure, and combining parameters such as the compartment volume, the door opening time, and the actual door opening time used, the intrusion frosting amount of the refrigerator compartment can be accurately determined.

[0041] In this solution, the defrosting duration threshold when the refrigerator is closed is the longest preset defrosting duration when the refrigerator is closed. For example, the defrosting duration threshold when the refrigerator is closed is 72 hours or 36 hours. The refrigerator can determine the moisture evaporation rate of the refrigerator compartment in the following way: The refrigerator sets the ambient temperature and humidity to specific values respectively and keeps the refrigerator running at the default factory setting. After defrosting is completed, place water-soaked sponges on each shelf of the refrigerating compartment and place a 75% frozen load pack in the freezing compartment. Let the refrigerator run for a certain period of time without opening the door, and then perform forced defrosting and weigh the weight of the defrosting water. It can be understood that the mass of the defrosting water is the defrosting threshold, and through this value, the moisture evaporation rate in the refrigerator compartment can be calculated. With this solution, the evaporation situation of the moisture in the compartment can be accurately quantified, providing key data support for subsequent frosting amount calculation and refrigerator performance optimization. In this way, the refrigerator can use the product of the moisture evaporation rate of the refrigerator compartment and the defrosting duration threshold when the refrigerator is closed as the first defrosting threshold. With this solution, by multiplying the moisture evaporation rate of the refrigerator compartment by the defrosting duration threshold in the closed state, the first defrosting threshold is calculated, providing an accurate quantitative basis for the defrosting control of the refrigerator.

[0042] Furthermore, when the sum of the intrinsic frosting amount and the intrusion frosting amount in the refrigerator compartment is greater than or equal to the first defrosting threshold, the refrigerator controls the refrigerator to perform a defrosting operation. Here, the refrigerator controlling the refrigerator to perform a defrosting operation includes controlling the refrigerator to start the defrosting heating wire to melt the frost layer by heating the evaporator.

[0043] By adopting the method for controlling defrosting of a refrigerator provided by the embodiments of the present disclosure, by comprehensively considering the intrinsic frost formation amount caused by the evaporation of moisture in the compartment and the intrusion frost formation amount caused by the entry of air water vapor into the compartment when the refrigerator door is opened, and comparing it with the first defrosting threshold determined based on the moisture evaporation rate and the defrosting duration threshold, accurate defrosting control is achieved. With this solution, the defrosting timing of the refrigerator can be determined more accurately, effectively avoiding the situation of overly frequent defrosting in a low-humidity environment, significantly reducing the operating energy consumption of the refrigerator. At the same time, the risk of frost blockage of the evaporator is reduced, the operating efficiency and reliability of the refrigerator are improved, the service life of the equipment is extended, and a more efficient, energy-saving and stable defrosting solution is provided for users.

[0044] Figure 2 is a schematic diagram of a method for determining the intrinsic frost formation amount provided by the embodiments of the present disclosure; in combination with Figure 2 As shown, optionally, S11, the refrigerator determines the intrinsic frost formation amount of the refrigerator compartment, including:

[0045] S21, the refrigerator obtains the internal moisture evaporation rate of the refrigerator compartment and the operating duration of the refrigerator.

[0046] S22, the refrigerator takes the product of the internal moisture evaporation rate of the refrigerator compartment and the operating duration of the refrigerator as the intrinsic frost formation amount of the refrigerator compartment.

[0047] In this solution, the refrigerator can determine the internal moisture evaporation rate of the refrigerator compartment by the sensor detection method and the comparative experiment method. Among them, the sensor detection method is to install a humidity sensor and a temperature sensor to monitor the temperature and humidity changes in the refrigerator compartment in real time, so as to calculate the evaporation rate. The comparative experiment method is to set different experimental conditions and compare the evaporation rates under different conditions to determine the water vapor evaporation rate of the refrigerator compartment. With this solution, the internal moisture evaporation rate of the refrigerator compartment can be accurately calculated.

[0048] In this solution, the refrigerator can determine its operating duration through the built-in microcontroller or timing module. The specific method is: when the refrigerator is powered on and starts to work, start the timer and record the cumulative operating time of the refrigerator from startup to the current time in real time. When the refrigerator pauses operation due to door opening, power failure or other operations, the timer will pause timing and continue to accumulate time when the operation resumes. With this solution, the refrigerator can accurately record its actual operating duration.

[0049] Furthermore, the refrigerator takes the product of the internal moisture evaporation rate of the refrigerator compartment and the operating duration of the refrigerator as the intrinsic frost formation amount of the refrigerator compartment. That is, A = a × t1. Where A is the intrinsic frost formation amount of the refrigerator compartment, a is the internal moisture evaporation rate of the refrigerator compartment, and t1 is the operating duration of the refrigerator. With this solution, the intrinsic frost formation amount of the refrigerator compartment can be accurately determined, providing an important basis for the energy consumption management of the refrigerator.

[0050] Figure 3 It is a schematic diagram of a method provided by an embodiment of the present disclosure for determining the amount of intrusion frosting; in combination with Figure 3 As shown, optionally, S11, the refrigerator determines the amount of intrusion frosting in the refrigerator compartment, including:

[0051] S31, the refrigerator obtains the ambient temperature and ambient humidity where the refrigerator is located.

[0052] S32, the refrigerator determines the saturated water vapor pressure corresponding to the current ambient temperature according to the ambient temperature.

[0053] S33, the refrigerator determines the amount of intrusion frosting in the refrigerator compartment according to the saturated water vapor pressure corresponding to the current ambient temperature, ambient humidity, compartment volume, ambient temperature, compartment full load time, and door opening time when the user uses the refrigerator.

[0054] In this solution, the ambient temperature can be obtained by real-time measurement using a high-precision temperature sensor installed near the refrigerator, and the ambient humidity is obtained through a humidity sensor. These sensors can accurately reflect the actual temperature and humidity conditions of the environment around the refrigerator, providing basic data for subsequent calculations. At the same time, the refrigerator can determine the saturated water vapor pressure corresponding to the current ambient temperature through its built-in temperature-saturated water vapor pressure lookup table. Based on known physical relationships, this lookup table can quickly and accurately provide the saturated water vapor pressure value. The refrigerator can also determine the refrigerator compartment volume by measurement or pre-stored refrigerator size information. Here, the compartment volume is used to calculate the mass of water vapor that can be accommodated in the compartment each time the door is opened.

[0055] Optionally, the compartment full load time refers to the time required for water vapor in the air to enter the compartment until the compartment is full. To accurately calculate the amount of intrusion frosting, the influence of the door opening time also needs to be considered. Specifically, the following experiment can be carried out to obtain the compartment full load time: set the ambient temperature and humidity to specific values respectively, keep the refrigerator running at the default factory setting, and let the refrigerator run to a stable state after defrosting. Then control the prototype to perform the door opening operation. The refrigerator compartments are opened every z minutes, each time for s seconds, and after j consecutive openings, record the duration t' of the entire experiment. After the experiment, perform forced defrosting and weigh the mass N (g) of the defrosting water. Then the compartment full load time can be calculated by the following method:

[0056]

[0057] where, Δ t is the compartment full load time, N is the mass of the defrosting water weighed after the experiment, a is the internal water evaporation rate of the refrigerator compartment, t' is the duration of the experiment, j is the number of door openings, s is the door opening time, φ is the ambient relative humidity, ps p is the saturated water vapor pressure corresponding to the current ambient temperature, V is the volume of the refrigerator compartment, and T is the ambient temperature. With this algorithm, the opening time required for all the water vapor in the air to enter the compartment can be accurately calculated. At the same time, the opening time when the user uses the refrigerator can be recorded by a timing module built into the refrigerator. The timer starts when the door is opened each time and stops when the door is closed to accumulate all the opening times.

[0058] Further, the refrigerator determines the amount of intrusion frosting in the refrigerator compartment based on the saturated water vapor pressure corresponding to the current ambient temperature, the ambient humidity, the volume of the compartment, the ambient temperature, the full-load time of the compartment, and the opening time when the user uses the refrigerator, including:

[0059]

[0060] where B is the amount of intrusion frosting in the refrigerator compartment, φ is the ambient relative humidity, p s is the saturated water vapor pressure corresponding to the current ambient temperature, V is the volume of the refrigerator compartment, T is the ambient temperature, Δ t is the full-load time of the compartment, and t2 is the opening time when the user uses the refrigerator. With this solution, it is possible to combine parameters such as the saturated water vapor pressure, the ambient humidity, the volume of the compartment, the ambient temperature, and the opening time, and use the formula to calculate the amount of intrusion frosting in the refrigerator compartment. In this way, it provides an important basis for the frost prediction and energy consumption management of the refrigerator, which helps to optimize the performance of the refrigerator and reduce energy consumption.

[0061] Figure 4 is another schematic diagram of a method for controlling defrosting of a refrigerator provided by an embodiment of the present disclosure; in combination with Figure 4 as shown, optionally, S13, when the sum of the intrinsic frosting amount and the intrusion frosting amount in the refrigerator compartment is greater than or equal to the first defrosting threshold, the refrigerator controls the refrigerator to perform a defrosting operation, including:

[0062] S41, when the sum of the intrinsic frosting amount and the intrusion frosting amount in the refrigerator compartment is greater than or equal to the first defrosting threshold, the refrigerator obtains the current time.

[0063] S42, when the current time is in the low electricity consumption period, the refrigerator controls the refrigerator to perform a defrosting operation.

[0064] In this solution, when it is determined that the sum of the intrinsic frosting amount and the intrusion frosting amount reaches or exceeds the first defrosting threshold, the current time point is recorded, and the recording of this time point is completed by a clock module built into the refrigerator to ensure the accuracy and real-time nature of the time information.

[0065] Further, the refrigerator compares the recorded current time with the preset low - electricity - consumption period. Among them, the low - electricity - consumption period is usually pre - stored in the refrigerator according to the peak - valley electricity price policy of power supply or the user's electricity - consumption habits. In this way, if the current time is within the low - electricity - consumption period, the refrigerator will automatically start the defrosting program and perform the defrosting operation. With this solution, not only can the frost layer on the evaporator surface be effectively removed, improving the refrigeration efficiency of the refrigerator, but also the lower electricity price during the low - consumption period can be utilized to reduce the user's electricity cost.

[0066] Optionally, when the current moment is not within the low - electricity - consumption period, the refrigerator determines a second defrosting threshold.

[0067] The refrigerator acquires the intrinsic frosting amount and the intrusion frosting amount of the refrigerator compartment again.

[0068] If the sum of the intrinsic frosting amount and the intrusion frosting amount acquired again is greater than or equal to the second defrosting threshold, the refrigerator controls the refrigerator to perform the defrosting operation.

[0069] In this solution, when the current moment is not within the low - electricity - consumption period, the refrigerator determines a second defrosting threshold. Specifically, the refrigerator determines the second defrosting threshold, including: The refrigerator acquires the ambient humidity where the refrigerator is located again. The refrigerator determines the second defrosting threshold according to the ambient humidity where the refrigerator is located and the first defrosting threshold. With this solution, the second defrosting threshold can be accurately determined.

[0070] Further, after determining the second defrosting threshold, the refrigerator will acquire the intrinsic frosting amount and the intrusion frosting amount of the compartment again. The intrinsic frosting amount is calculated by the product of the internal moisture evaporation rate of the refrigerator compartment and the running duration, while the intrusion frosting amount is comprehensively calculated by considering factors such as ambient temperature, humidity, compartment volume, and door - opening time. The specific calculation method is the same as the method for determining the intrinsic frosting amount and the intrusion frosting amount for the first time, and will not be elaborated here. In this way, the refrigerator can compare the sum of the intrinsic frosting amount and the intrusion frosting amount acquired again with the second defrosting threshold. If the sum of the intrinsic frosting amount and the intrusion frosting amount acquired again is greater than or equal to the second defrosting threshold, it controls the refrigerator to perform the defrosting operation. With this solution, it can ensure that the refrigerator can perform the defrosting operation in a timely manner even during non - low - consumption periods, thus effectively preventing excessive frosting from affecting the refrigeration efficiency, while taking into account the energy - saving requirements and improving the intelligent level and operation reliability of the refrigerator.

[0071] Optionally, the refrigerator determines the second defrosting threshold, including:

[0072] The refrigerator acquires the ambient humidity where the refrigerator is located again.

[0073] The refrigerator determines the second defrosting threshold according to the ambient humidity where the refrigerator is located and the first defrosting threshold.

[0074] In this solution, an ambient humidity sensor can be arranged on the top of the refrigerator, and the ambient humidity sensor is used to obtain the ambient humidity again. Further, the refrigerator can determine a second defrost threshold in combination with the ambient humidity where the refrigerator is located and a first defrost threshold. Specifically, the refrigerator determines the second defrost threshold according to the ambient humidity where the refrigerator is located and the first defrost threshold, including:

[0075]

[0076] Where M2 is the second defrost threshold, φ is the ambient humidity where the refrigerator is located, and M1 is the first defrost threshold. With this solution, it is possible to more accurately adapt to the frosting conditions under different environmental conditions, ensure that the refrigerator can reasonably trigger the defrost operation according to the actual frost accumulation amount even during non-low electricity consumption periods, thereby effectively improving the operating efficiency and energy-saving effect of the refrigerator, and at the same time extending the service life of the refrigerator.

[0077] Optionally, the refrigerator obtains the evaporator temperature collected by the temperature sensor.

[0078] When the evaporator temperature is greater than the preset temperature, the refrigerator controls the refrigerator to stop the defrost operation.

[0079] In this solution, in order to precisely control the defrosting process and avoid energy waste and equipment damage caused by overheating, the refrigerator can be equipped with a temperature sensor on the surface of the evaporator to sense the temperature change of the evaporator in real time.

[0080] Further, if the temperature of the evaporator exceeds the preset temperature, it means that the frost layer on the surface of the evaporator has melted. At this time, the refrigerator controls the refrigerator to stop the defrost operation. Here, the preset temperature is the defrost exit temperature, and the refrigerator controls the refrigerator to stop the defrost operation, including controlling the refrigerator to turn off the defrost heating wire. With this solution, the refrigerator can dynamically adjust the defrost operation according to the actual evaporator temperature, ensuring that the frost layer can be effectively removed during the defrosting process without wasting energy or damaging the equipment due to overheating. This solution not only improves the operating efficiency of the refrigerator, but also extends the service life of the equipment, and at the same time saves energy costs for users.

[0081] In practical applications, temperature sensors and humidity sensors are arranged on the top of the refrigerator to monitor the temperature and humidity changes in the environment in real time. In this way, after the previous defrosting is completed, when the compressor restarts, the refrigerator calculates the amount of intrusion frosting and the amount of intrinsic frosting, and calculates the sum of the amount of intrusion frosting and the amount of intrinsic frosting. When the sum of the amount of intrinsic frosting and the amount of intrusion frosting in the refrigerator compartment is less than the first defrosting threshold, the refrigerator periodically updates the data of the amount of intrinsic frosting and the amount of intrusion frosting in the refrigerator compartment until the sum of the amount of intrinsic frosting and the amount of intrusion frosting in the refrigerator compartment is greater than or equal to the first defrosting threshold. Among them, the update period can be preset in advance and can be 1 minute or 1 hour. Further, when the sum of the amount of intrinsic frosting and the amount of intrusion frosting in the refrigerator compartment is greater than or equal to the first defrosting threshold, the refrigerator reads the information of the low electricity consumption period in the current area and determines whether the current time is during the low electricity consumption period. If so, the refrigerator immediately starts the defrosting operation. If not, the refrigerator enters the defrosting delay state. In this way, in the defrosting delay state, the refrigerator updates the defrosting threshold to the second defrosting threshold and continues the aforementioned update and summation process of the amount of intrinsic frosting and the amount of intrusion frosting. If during the delay period, the sum of the amount of intrinsic frosting and the amount of intrusion frosting reaches the second defrosting threshold, the refrigerator immediately performs the defrosting operation. Otherwise, the refrigerator delays the defrosting operation until the low electricity consumption period arrives and then executes it.

[0082] Moreover, during the defrosting process, the temperature sensor on the evaporator senses the temperature of the evaporator in real time. When the defrosting heating wire is turned on to heat the evaporator to melt the frost layer, if the sensor senses that the temperature of the evaporator exceeds the preset temperature, the refrigerator immediately turns off the defrosting heating wire, thus ending the defrosting process.

[0083] Figure 5 is another schematic diagram of a device for controlling the defrosting of a refrigerator provided by an embodiment of the present disclosure; combined with Figure 5 As shown, an embodiment of the present disclosure provides a device 300 for controlling the defrosting of a refrigerator, including a processor 301 and a memory 302. Optionally, the device 300 may further include a communication interface 303 and a bus 304. Among them, the processor 301, the communication interface 303, and the memory 302 can communicate with each other through the bus 304. The communication interface 303 can be used for information transmission. The processor 301 can call the logical instructions in the memory 302 to execute the method for controlling the defrosting of the refrigerator in the above embodiment.

[0084] In addition, when the logical instructions in the above-mentioned memory 302 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0085] The memory 302, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor 301 executes functional applications and data processing by running the program instructions / modules stored in the memory 302, that is, to implement the method for controlling defrosting of the refrigerator in the above embodiments.

[0086] The memory 302 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 302 may include a high-speed random access memory and may also include a non-volatile memory.

[0087] Figure 6 is a schematic structural diagram of a refrigerator provided by an embodiment of the present disclosure; in combination with Figure 6 As shown, an embodiment of the present disclosure provides a refrigerator 100, including: a refrigerator body, and the above-mentioned device 300 for controlling defrosting of the refrigerator. The device 300 for controlling defrosting of the refrigerator is installed on the refrigerator body. The installation relationship described here is not limited to being placed 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. Those skilled in the art can understand that the device 300 for controlling defrosting of the refrigerator can be adapted to a feasible refrigerator body, and then implement other feasible embodiments.

[0088] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are set to execute the above method for controlling defrosting of the refrigerator.

[0089] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product. This computer software product 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 foregoing storage medium may be a non-transitory storage medium, for example: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc, etc., which are various media that can store program codes.

[0090] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. Embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terms used in this application are only for describing embodiments and do not limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to also include the plural forms. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations of one or more of the associated listed items. Additionally, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" etc. mean the presence of the 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 of these. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, or device comprising the element. Herein, what each embodiment focuses on can be the differences from other embodiments, and the same or similar parts among the embodiments can be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, the relevant parts can refer to the description of the method part.

[0091] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner can depend on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure. The skilled person can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0092] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms. The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. Additionally, in the embodiments of the present disclosure, the various functional units can be integrated in one processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit.

[0093] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions marked in the blocks can occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks can also occur in a different order than that disclosed in the description. 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 reverse order, depending on the functions involved. Each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling defrosting of a refrigerator, characterized in that: include: Determine the intrinsic frost and intrusive frost in the refrigerator compartment; The product of the evaporation rate of the water in the refrigerator compartment and the defrosting time threshold when the refrigerator door is kept closed is used as the first defrosting threshold; When the sum of the intrinsic frost amount and the intrusive frost amount of the refrigerator compartment is greater than or equal to the first defrost threshold, controlling the refrigerator to perform a defrost operation; Among them, the intrinsic frost amount refers to the frost amount on the evaporator caused by the evaporation of water in the refrigerator compartment, and the intrusive frost amount refers to the frost amount on the evaporator caused by the water vapor in the air entering the compartment when the refrigerator door is opened.

2. The method according to claim 1, characterized in that Determine the intrinsic frost level of the refrigerator compartment, including: Obtain the evaporation rate of water inside the refrigerator compartment and the operating time of the refrigerator; The product of the evaporation rate of water inside the refrigerator compartment and the operating time of the refrigerator is taken as the intrinsic frost amount of the refrigerator compartment.

3. The method according to claim 1, characterized in that Determine the amount of frost intrusion into the refrigerator compartment, including: Get the ambient temperature and humidity of the refrigerator; According to the ambient temperature, determine the saturated water vapor pressure corresponding to the current ambient temperature; The amount of frost intrusion into the refrigerator compartment is determined based on the corresponding saturated water vapor pressure at the current ambient temperature, ambient humidity, compartment volume, ambient temperature, compartment full load time, and door opening time when the user uses the refrigerator.

4. The method according to claim 1, characterized in that: When the sum of the intrinsic frost amount and the intrusive frost amount of the refrigerator compartment is greater than or equal to a first defrost threshold, controlling the refrigerator to perform a defrost operation includes: When the sum of the intrinsic frost amount and the intrusive frost amount of the refrigerator compartment is greater than or equal to the first defrosting threshold, obtaining the current time; When the current moment is a low electricity consumption period, the refrigerator is controlled to perform a defrost operation.

5. The method according to claim 4, characterized in that Also includes: When the current moment is not in a low electricity consumption period, determining a second defrosting threshold; The intrinsic frost amount and the intrusive frost amount of the refrigerator compartment are obtained again; If the sum of the intrinsic frost amount and the intrusive frost amount obtained again is greater than or equal to the second defrost threshold, the refrigerator is controlled to perform a defrost operation.

6. The method according to claim 5, characterized in that Determine the second defrost threshold, including: Get the humidity of the environment where the refrigerator is located again; The second defrost threshold is determined according to the ambient humidity of the refrigerator and the first defrost threshold.

7. The method according to any one of claims 1 to 6, characterized in that: A temperature sensor is provided on the surface of the evaporator. After controlling the refrigerator to perform a defrosting operation, the method further includes: Obtain the evaporator temperature collected by the temperature sensor; When the evaporator temperature is greater than the preset temperature, the refrigerator is controlled to stop the defrosting operation.

8. A device for controlling defrosting of a refrigerator, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the method for controlling defrosting of a refrigerator according to any one of claims 1 to 7 when running the program instructions.

9. A refrigerator, characterized in that: include: Refrigerator body; The device for controlling defrosting of a refrigerator as claimed in claim 8 is installed on the refrigerator body.

10. A computer-readable storage medium storing program instructions, characterized in that: When the program instructions are executed, the computer is used to execute the method for controlling defrosting of a refrigerator as claimed in any one of claims 1 to 7.

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