Defrosting control method, defrosting control device, refrigerator and storage medium

Abstract

The invention relates to a defrosting control method, a defrosting control device, a refrigerator and a storage medium, and the defrosting control method comprises the steps that the current environment temperature value, the current environment humidity value, the current defrosting quit temperature, the last defrosting quit temperature, the current defrosting duration and the last defrosting duration are obtained; according to the temperature range where the current environment temperature is located, different defrosting strategies are executed according to the set refrigeration temperature change condition, the current environment humidity value, the current defrosting exit temperature, the last defrosting exit temperature, the current defrosting duration and the last defrosting duration; wherein different defrosting strategies correspond to different defrosting starting parameters respectively. By means of the refrigerator defrosting method and device, the problem that the energy consumption of refrigerator defrosting is large is solved, and the energy consumption of refrigerator defrosting is reduced.

Description

Technical Field

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

[0002] For frost-free refrigerators, defrosting is a crucial feature. Ensuring timely defrosting is a crucial issue for air-cooled refrigerators. Currently, refrigerators on the market generally use a natural defrosting system, with defrosting occurring once during each cooling cycle. At the end of each cooling cycle, the refrigerator fan draws high-temperature air from the refrigerator compartment into the evaporator chamber for natural defrosting. The defrost cycle continues until the defrost exits, reaching the defrost exit temperature or time.

[0003] However, the refrigerator compartment is defrosted immediately after refrigeration is completed. The method of defrosting once and cooling once is too simple. Especially when the heat load of the refrigerator compartment is small, such as low ambient temperature and less food stored, there is not much frost on the evaporator. The single defrosting method of defrosting once and cooling once is too frequent. The continuous operation of the fan will cause the power consumption of the refrigerator to increase, and the temperature in the refrigerator compartment will also increase after defrosting is completed, resulting in large temperature fluctuations in the refrigerator compartment. After the temperature of the refrigerator compartment increases, the cooling capacity required for the next cooling will increase, which further increases the power consumption of the refrigerator.

[0004] With regard to the problem of high energy consumption during refrigerator defrosting in related technologies, no effective solution has been proposed so far. Summary of the Invention

[0005] In this embodiment, a defrost control method, a defrost control device, a refrigerator, and a storage medium are provided to solve the problem of high energy consumption during refrigerator defrosting in the related art.

[0006] In a first aspect, a defrost control method is provided in this embodiment, including:

[0007] Get the current ambient temperature, current ambient humidity, current defrost exit temperature, last defrost exit temperature, current defrost duration, and last defrost duration;

[0008] When the current ambient temperature is within a preset first temperature range, executing a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature;

[0009] When the current ambient temperature is within a preset second temperature range, the preset second defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time, and the previous defrost time;

[0010] When the current ambient temperature is within a preset third temperature range, a preset third defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the last defrost exit temperature, the current defrost time, and the last defrost time;

[0011] When the current ambient temperature value is within a preset fourth temperature range, executing a preset fourth defrost strategy according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time, and the previous defrost time;

[0012] Among them, the preset first temperature range is smaller than the preset second temperature range, which is smaller than the preset third temperature range, which is smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters.

[0013] In some embodiments, when the current ambient temperature is within a preset first temperature range, executing a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature includes:

[0014] When the current ambient temperature is within a preset first temperature range, determining whether the current ambient humidity value is less than or equal to a preset first humidity threshold;

[0015] If so, starting defrost when the current defrost exit temperature is less than or equal to a preset first defrost exit temperature threshold;

[0016] Otherwise, when the current defrost exit temperature is less than or equal to a preset second defrost exit temperature threshold, defrost is started.

[0017] In some embodiments, when the current ambient temperature value is within a preset second temperature range, a preset second defrost strategy is executed according to a set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration, including:

[0018] When the current ambient temperature value is within a preset second temperature range, determining whether the current ambient humidity value is less than or equal to a preset second humidity threshold;

[0019] If so, when the currently set refrigeration temperature is greater than or equal to the refrigeration temperature set last time, and the current defrost exit temperature is less than or equal to the preset second defrost exit temperature threshold, defrost is started; or when the currently set refrigeration temperature is less than the refrigeration temperature set last time, and the current defrost exit temperature is less than or equal to the previous defrost exit temperature, defrost is started; or when the currently set refrigeration temperature is less than the refrigeration temperature set last time, and the current defrost exit temperature is greater than or equal to the previous defrost exit temperature, and the current defrost duration is greater than or equal to the previous defrost duration, defrost is started;

[0020] Otherwise, when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset third defrost exit temperature threshold, defrost is started; or when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is less than the last defrost exit temperature, defrost is started; or when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time, defrost is started.

[0021] In some embodiments, when the current ambient temperature value is within a preset third temperature range, a preset third defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration, including:

[0022] When the current ambient temperature value is within a preset third temperature range, determining the humidity range within which the current ambient humidity value is located;

[0023] If the current ambient humidity value is less than or equal to the preset third humidity threshold, then when the currently set refrigeration temperature is greater than or equal to the previously set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset fourth defrost exit temperature threshold, defrost is started; or, when the currently set refrigeration temperature is less than the previously set refrigeration temperature, and the current defrost exit temperature is less than the previously set defrost exit temperature, defrost is started; or, when the currently set refrigeration temperature is less than the previously set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the previously set defrost exit temperature, and the currently defrosted time is greater than or equal to the previously set defrosted time, defrost is started;

[0024] If the current ambient humidity value is greater than the preset third humidity value and less than or equal to the preset fourth humidity threshold; then when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset fifth defrost exit temperature threshold, defrost is started; or, when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is less than the last defrost exit temperature, defrost is started; or, when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time, defrost is started;

[0025] If the current ambient humidity value is greater than the preset fourth humidity threshold, defrost is started when the currently set refrigeration temperature is lower than the last set refrigeration temperature; or defrost is started when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is lower than the last defrost exit temperature; or defrost is started when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time.

[0026] In some embodiments, when the current ambient temperature value is within a preset fourth temperature range, a preset fourth defrost strategy is executed according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time, and the previous defrost time, including:

[0027] Determining whether the currently set refrigeration temperature is lower than the last set refrigeration temperature;

[0028] If so, start defrosting;

[0029] Otherwise, defrost is started when the current defrost exit temperature is lower than the previous defrost exit temperature; or when the current defrost exit temperature is greater than or equal to the previous defrost exit temperature and the current defrost duration is greater than or equal to the previous defrost duration.

[0030] In some embodiments, the preset first defrost exit temperature threshold is smaller than the preset second defrost exit temperature threshold, smaller than the preset third defrost exit temperature threshold, smaller than the preset fourth defrost exit temperature threshold, and smaller than the preset fifth defrost exit temperature threshold.

[0031] In some embodiments, when the refrigerator does not enter the defrost stage and directly performs refrigeration, the temperature at the start of refrigeration is recorded as the current defrost exit temperature.

[0032] In a second aspect, a defrost control device is provided in this embodiment, comprising: an acquisition module, a first execution module, a second execution module, a third execution module and a fourth execution module, wherein:

[0033] The acquisition module is used to obtain the current ambient temperature value, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time;

[0034] The first execution module is configured to execute a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature when the current ambient temperature is within a preset first temperature range;

[0035] The second execution module is configured to execute a preset second defrost strategy according to a set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature is within a preset second temperature range;

[0036] The third execution module is configured to execute a preset third defrost strategy according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature is within a preset third temperature range;

[0037] The fourth execution module is configured to execute a preset fourth defrost strategy according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature value is within a preset fourth temperature range;

[0038] Among them, the preset first temperature range is smaller than the preset second temperature range, which is smaller than the preset third temperature range, which is smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters.

[0039] In a third aspect, in this embodiment, a refrigerator is provided that applies the defrost control method described in the first aspect, comprising: a refrigeration chamber and a defrost module; wherein,

[0040] The defrost module is located in the refrigeration chamber and is used for defrosting the refrigeration chamber.

[0041] In a fourth aspect, a storage medium is provided in this embodiment, on which a computer program is stored. When the program is executed by a processor, the defrost control method described in the first aspect is implemented.

[0042] Compared with the related art, the defrost control method provided in this embodiment obtains the current ambient temperature value, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time; when the current ambient temperature is within a preset first temperature range, a preset first defrost strategy is executed according to the current ambient humidity value and the current defrost exit temperature; when the current ambient temperature is within a preset second temperature range, a preset second defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time; when the current ambient temperature is within a preset third temperature range, a preset second defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time; The current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time, execute the preset third defrost strategy; when the current ambient temperature value is in the preset fourth temperature range, according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time, execute the preset fourth defrost strategy; wherein, the preset first temperature range is smaller than the preset second temperature range, smaller than the preset third temperature range, and smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters, which solves the problem of high energy consumption of refrigerator defrosting and reduces the energy consumption of refrigerator defrosting.

[0043] The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0045] Figure 1 This is a hardware structure block diagram of the terminal of the defrost control method of this embodiment.

[0046] Figure 2 4 is a flow chart of the defrost control method of this embodiment.

[0047] Figure 3 It is a structural block diagram of the defrost control device of this embodiment. DETAILED DESCRIPTION

[0048] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0049] Unless otherwise defined, the technical terms or scientific terms involved in this application should have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "an", "a", "the", "these" and the like in this application do not indicate quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application refers to two or more. "And / or" describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Generally, the character " / " indicates that the related objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0050] The method embodiment provided in this embodiment can be executed in a terminal, a computer or a similar computing device. For example, running on a terminal, Figure 1 FIG. 1 is a block diagram of the hardware structure of the terminal of the defrost control method of this embodiment. Figure 1 As shown, the terminal may include one or more ( Figure 1 Only one is shown) a processor 102 and a memory 104 for storing data, wherein the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above terminal may also include a transmission device 106 and an input and output device 108 for communication functions. It will be understood by those skilled in the art that Figure 1The structure shown is only for illustration and does not limit the structure of the above terminal. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0051] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the defrost control method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, that is, implementing the above-mentioned method. The memory 104 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0052] The transmission device 106 is used to receive or send data via a network. The network may include a wireless network provided by the terminal's telecommunications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0053] In this embodiment, a defrost control method is provided. Figure 2 is a flow chart of the defrost control method of this embodiment. Figure 2 As shown, the process includes the following steps:

[0054] Step S201, obtaining the current ambient temperature value, the current ambient humidity value, the current defrost exit temperature, the last defrost exit temperature, the current defrost duration and the last defrost duration.

[0055] Specifically, to save energy during refrigerator defrosting, this embodiment detects and compares multiple parameters to achieve precise defrosting. This avoids initiating defrost when it's not needed, which results in high defrosting energy consumption and energy waste. This embodiment primarily detects whether to initiate defrost by comparing the current ambient temperature, current ambient humidity, current defrost exit temperature, previous defrost exit temperature, current defrost duration, and previous defrost duration. The current ambient temperature refers to the refrigerator's ambient temperature before defrosting is initiated, which can be measured by a temperature sensor. The current ambient humidity refers to the refrigerator's ambient humidity before defrosting is initiated, which can be measured by a humidity sensor. The current defrost exit temperature refers to the refrigerator's current defrost exit temperature. If the refrigerator enters cooling mode without entering defrost mode, the temperature at which cooling mode is entered is the current defrost exit temperature. The current defrost duration is the duration from the start to the end of the current defrost phase, and the previous defrost duration is the duration from the start to the end of the most recent defrost phase.

[0056] Step S202: When the current ambient temperature is within a preset first temperature range, a preset first defrost strategy is executed according to the current ambient humidity value and the current defrost exit temperature.

[0057] Specifically, it is preferred to set different defrost strategies according to the current ambient temperature. When the ambient temperature is low, the refrigeration time of the refrigerator compartment is longer than the waiting time for refrigeration, and the frost on the refrigerated evaporator is not as fast as when the ambient temperature is high. Therefore, at this time, the first defrost strategy can be executed in combination with the current ambient humidity and the defrost exit temperature, that is, first judge the current ambient humidity. If the humidity is low, compare the current defrost exit temperature with the preset minimum defrost exit temperature threshold. If the current defrost exit temperature is greater than the preset minimum defrost exit temperature threshold, it means that the current defrost exit temperature is high, and the defrost is relatively thorough. Due to the low temperature and low humidity environment, the next refrigeration will be entered after the defrost is completed, and the frost layer will not be too thick after the refrigeration is completed. Therefore, after the refrigeration is completed, the defrost stage can be temporarily not entered, and the defrost can be started after the next refrigeration is completed, so as to avoid repeated defrosting and increase energy consumption. If the current defrost exit temperature is less than or equal to the preset minimum defrost exit temperature threshold, the current defrost exit temperature is low, indicating incomplete defrosting. After the next cooling cycle, a thicker layer of frost may accumulate. In this case, defrost needs to be restarted after the next cooling cycle to perform defrosting. If the current ambient humidity is high, increase the preset defrost exit temperature threshold and compare the current defrost exit temperature with the higher defrost exit temperature threshold. The comparison and defrost control methods are the same as those for lower ambient humidity. By increasing the preset defrost exit temperature threshold, the refrigerator can defrost more thoroughly even in high ambient humidity.

[0058] Exemplarily, in some embodiments, when the current ambient temperature is within a preset first temperature range, a preset first defrost strategy is executed according to the current ambient humidity value and the current defrost exit temperature, including: when the current ambient temperature is within the preset first temperature range, determining whether the current ambient humidity value is less than or equal to a preset first humidity threshold; if so, starting defrost when the previous defrost exit temperature is less than or equal to the preset first defrost exit temperature threshold;

[0059] Otherwise, when the current defrost exit temperature is less than or equal to the preset second defrost exit temperature threshold, defrost is started.

[0060] Specifically, when the ambient temperature T0 is within the first temperature range of 10°C, determine whether the current ambient humidity H0 is less than or equal to the first humidity threshold 60. If so, it is determined that the current environment is a low-humidity environment, and the current defrost exit temperature T2 is compared with the preset minimum defrost exit temperature threshold, that is, the first defrost exit temperature threshold Th1. If T2 is greater than Th1, defrost processing is not performed, and refrigeration is directly started when cooling is needed, and the temperature when refrigeration is started is recorded as the latest current defrost exit temperature; if T2 is less than or equal to Th1, defrost processing is performed, and the defrost exit temperature is set to Th1, and the defrost time is set to t0. If the current ambient humidity H0 is greater than 60, it is determined that the current environment is high humidity. The current defrost exit temperature T2 is compared with the preset second defrost exit temperature threshold Th2. If T2 is greater than Th2, defrosting is not performed. Refrigeration is directly started when cooling is needed, and the temperature at the time of refrigeration startup is recorded as the latest current defrost exit temperature. If T2 is less than or equal to Th2, defrosting is performed, and the defrost exit temperature is set to Th2, and the defrost duration is set to t0. Where Th1 is less than Th2, the specific first temperature range, first humidity threshold, first defrost exit temperature threshold Th1, and second defrost exit temperature threshold Th2 can be set according to actual conditions and are not specifically limited in this embodiment.

[0061] Step S203, when the current ambient temperature value is within the preset second temperature range, the preset second defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the last defrost exit temperature, the current defrost time and the last defrost time.

[0062] Specifically, when the ambient temperature rises, that is, when the current ambient temperature is high, and the current refrigeration temperature set for the refrigerator compartment is lower than the previous refrigeration temperature set for the refrigerator compartment, in a high temperature and high humidity environment, the current refrigeration level increases, which may cause the frost layer to thicken. In this case, it is necessary to combine the previous two defrost exit temperatures and defrost durations to make a judgment. For example, if the defrost exit temperature increases and the defrost time shortens at the end of the current defrost, it means that the current defrost is relatively thorough. After the next refrigeration cycle is completed, since the previous defrost was relatively thorough, it is possible to skip the defrost stage after the end of the current refrigeration cycle, that is, pause the defrost once, and directly enter the next refrigeration stage, thereby reducing the number of defrosts and saving energy. Conversely, when the current refrigeration level is very strong, such as in a high temperature and high humidity environment, if the current refrigeration temperature set for the refrigerator compartment is still lower than the previous refrigeration temperature set for the refrigerator compartment, the end of refrigeration will cause severe frost on the evaporator wall, affecting heat exchange efficiency. The limit value of the defrost exit temperature increases with the increase in refrigeration level, that is, with the increase in ambient temperature and humidity, so that different levels of frost can be melted.

[0063] Therefore, in order to control defrost more accurately, when the current ambient temperature is in the preset second temperature range, the preset second defrost strategy is executed in combination with the set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the last defrost exit temperature, the current defrost time and the last defrost time.

[0064] In some embodiments, when the current ambient temperature is within a preset second temperature range, a preset second defrost strategy is executed according to a set refrigeration temperature change, a current ambient humidity, a current defrost exit temperature, a previous defrost exit temperature, a current defrost duration, and a previous defrost duration, including:

[0065] When the current ambient temperature value is within a preset second temperature range, determine whether the current ambient humidity value is less than or equal to a preset second humidity threshold; if so, start defrosting when the currently set refrigeration temperature is greater than or equal to the refrigeration temperature set last time, and the current defrost exit temperature is less than or equal to the preset second defrost exit temperature threshold; or start defrosting when the currently set refrigeration temperature is less than the refrigeration temperature set last time, and the current defrost exit temperature is less than or equal to the previous defrost exit temperature; or start defrosting when the currently set refrigeration temperature is less than the refrigeration temperature set last time, and the current defrost exit temperature is greater than or equal to the previous defrost exit temperature, and the current defrost time is greater than or equal to the previous defrost time;

[0066] Otherwise, when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset third defrost exit temperature threshold, start defrost; or when the currently set refrigeration temperature is lower than the last set refrigeration temperature, and the current defrost exit temperature is lower than the last defrost exit temperature, start defrost; or when the currently set refrigeration temperature is lower than the last set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time, start defrost.

[0067] Exemplarily, the second temperature range is set to 10℃-20℃, and the second humidity threshold is set to 55. First, the current ambient humidity H0 is judged. When the current ambient humidity H0 is less than or equal to 55, it is determined that the current environment is a low humidity environment. Then, the currently set refrigeration temperature Te and the last set refrigeration temperature Tf are compared. If Te is less than Tf, the last defrost exit temperature T1 and the current defrost exit temperature T2 are compared. If the current defrost exit temperature T2 is less than the last defrost exit temperature T1, it means that the defrost exit temperature is low, and it is very likely that the defrost is not thorough. Therefore, in this case, after the next refrigeration is completed, it is necessary to start defrosting for defrosting, and set the next defrost exit temperature to the second defrost exit temperature threshold Th2, and set the defrost time to t0. If the current defrost exit temperature T2 is greater than or equal to the previous defrost temperature T1, the current defrost duration t2 is compared with the previous defrost duration t1. If t2 is greater than or equal to t1, it means that the current defrost exit temperature was reached after a long defrosting period, so there is still a possibility that the defrost is not thorough. In this case, it is necessary to start the defrost after the next refrigeration cycle ends, and set the next defrost exit temperature to the second defrost exit temperature threshold Th2, and set the defrost duration to t0. If t2 is less than t1, it means that a higher defrost exit temperature was reached in a short period of time, and it can be judged that the defrost is relatively thorough. In order to save energy, the defrost can be deactivated before the next refrigeration cycle.

[0068] In this high humidity environment, if Te is greater than or equal to Tf, it is sufficient to compare the current defrost exit temperature T2 with the preset second defrost exit temperature threshold TH2. If T2 is greater than TH2, it means that the defrost exit temperature is high, and it can be judged that the current defrost is relatively thorough. In order to save energy, defrost can be disabled before the next cooling; otherwise, defrost needs to be started after the next cooling is completed for defrosting, and the next defrost exit temperature is set to the second defrost exit temperature threshold Th2, and the defrost time is set to t0.

[0069] When the current ambient humidity H0 is less than or equal to 55, it is determined that the current environment is low humidity, and then the currently set refrigeration temperature Te is compared with the last set refrigeration temperature Tf. If Te is less than Tf, the last defrost exit temperature T1 and the current defrost exit temperature T2 are compared. If T2 is less than T1, it means that the current defrost exit temperature is low, and there is a greater possibility that the defrost is not complete. Therefore, in this case, it is necessary to start defrosting after the next refrigeration is completed, and the next defrost exit temperature is set to the third defrost exit temperature threshold Th3, and the defrost time is set to t0. If T2 is greater than or equal to T1, the current defrost time t2 is compared with the last defrost time t1. When t2 is greater than or equal to t1, there is a possibility that the defrost is not thorough. In this case, it is necessary to start the defrost for defrosting after the next refrigeration is completed, and the next defrost exit temperature is set to the third defrost exit temperature threshold Th3, and the defrost time is set to t0; otherwise, it can be judged that the current defrost is relatively thorough. In order to save energy, the defrost may not be started before the next refrigeration.

[0070] If in this low-humidity environment, Te is greater than or equal to Tf, it is sufficient to compare the current defrost exit temperature T2 with the preset third defrost exit temperature threshold TH3. If T2 is greater than TH3, it means that the defrost exit temperature is high, and it can be judged that the current defrost is relatively thorough. In order to save energy, defrost can be disabled before the next cooling; otherwise, defrost needs to be started after the next cooling is completed for defrosting, and the next defrost exit temperature is set to the third defrost exit temperature threshold Th3, and the defrost time is set to t0.

[0071] Step S204, when the current ambient temperature value is in the preset third temperature range, execute the preset third defrost strategy according to the set refrigeration temperature change, the current ambient humidity value, the current defrost exit temperature, the last defrost exit temperature, the current defrost time and the last defrost time.

[0072] Specifically, when the current environment enters a high temperature environment, it is necessary to combine the set refrigeration temperature changes, the current ambient humidity value, the current defrost exit temperature, the last defrost exit temperature, the current defrost time and the last defrost time to more accurately determine the current defrost degree, and then execute the preset third defrost strategy.

[0073] For example, in some embodiments, when the current ambient temperature is within a preset third temperature range, a preset third defrost strategy is executed according to a set refrigeration temperature change, a current ambient humidity, a current defrost exit temperature, a previous defrost exit temperature, a current defrost duration, and a previous defrost duration, including:

[0074] When the current ambient temperature value is within the preset third temperature range, the humidity range of the current ambient humidity value is judged; if the current ambient humidity value is less than or equal to the preset third humidity threshold, then when the currently set refrigeration temperature is greater than or equal to the previously set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset fourth defrost exit temperature threshold, defrost is started; or, when the currently set refrigeration temperature is less than the previously set refrigeration temperature, and the current defrost exit temperature is less than the previously set defrost exit temperature, defrost is started; or, when the currently set refrigeration temperature is less than the previously set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the previously set defrost exit temperature, defrost is started.

[0075] Specifically, for example, the third temperature range is set to 20℃-30℃, and the third humidity threshold is set to 50. First, the current ambient humidity H0 is judged. When the current ambient humidity H0 is less than or equal to 50, it is determined that the current environment is a low humidity environment. Then, the currently set refrigeration temperature Te and the last set refrigeration temperature Tf are compared. If Te is less than Tf, the last defrost exit temperature T1 and the current defrost exit temperature T2 are compared. If the current defrost exit temperature T2 is less than the last defrost exit temperature T1, it means that the defrost exit temperature is low, and it is very likely that the defrost is not thorough. Therefore, in this case, after the next refrigeration is completed, it is necessary to start defrosting for defrosting, and set the next defrost exit temperature to the fourth defrost exit temperature threshold Th4, and the defrost time is set to t0. If the current defrost exit temperature T2 is greater than or equal to the previous defrost temperature T1, the current defrost duration t2 is compared with the previous defrost duration t1. If t2 is greater than or equal to t1, it means that the current defrost exit temperature was reached after a long defrosting period, so there is still a possibility that the defrost is not thorough. In this case, it is necessary to start the defrost process after the next refrigeration cycle ends, and the next defrost exit temperature is set to the fourth defrost exit temperature threshold Th4, and the defrost duration is set to t0. If t2 is less than t1, it means that a higher defrost exit temperature was reached in a relatively short period of time. In this case, it can be determined that the defrost is relatively thorough. In order to save energy, the defrost can be deactivated before the next refrigeration cycle.

[0076] Or, in this low humidity environment, if Te is greater than or equal to Tf, it is sufficient to compare the current defrost exit temperature T2 with the preset fourth defrost exit temperature threshold TH4. If T2 is greater than TH4, it means that the defrost exit temperature is high, and it can be judged that the current defrost is relatively thorough. In order to save energy, defrost can be disabled before the next cooling; otherwise, defrost needs to be started after the next cooling is completed for defrosting, and the next defrost exit temperature is set to the fourth defrost exit temperature threshold Th4, and the defrost time is set to t0.

[0077] If the current ambient humidity value is greater than the preset third humidity value and less than or equal to the preset fourth humidity threshold; then when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset fifth defrost exit temperature threshold, start defrost; or, when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is less than the last defrost exit temperature, start defrost; or, when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time, start defrost.

[0078] Specifically, when the third temperature range is 20℃-30℃, the third humidity threshold is set to 50, and the fourth humidity threshold is set to 75. When the current ambient humidity H0 is between 50-75, it is determined that the current environment is medium humidity. Then the currently set refrigeration temperature Te and the last set refrigeration temperature Tf are compared. If Te is less than Tf, the last defrost exit temperature T1 and the current defrost exit temperature T2 are compared. If the current defrost exit temperature T2 is less than the last defrost exit temperature T1, it means that the defrost exit temperature is low, and it is very likely that the defrost is not thorough. Therefore, in this case, after the next refrigeration is completed, it is necessary to start defrosting for defrosting, and set the next defrost exit temperature to the fifth defrost exit temperature threshold Th5, and the defrost time is set to t0. If the current defrost exit temperature T2 is greater than or equal to the previous defrost temperature T1, the current defrost duration t2 is compared with the previous defrost duration t1. If t2 is greater than or equal to t1, it means that the current defrost exit temperature was reached after a long defrosting period, so there is still a possibility that the defrost is not thorough. In this case, it is necessary to start the defrost after the next cooling cycle ends, and set the next defrost exit temperature to the fifth defrost exit temperature threshold Th5, and set the defrost duration to t0. If t2 is less than t1, it means that a higher defrost exit temperature was reached in a relatively short period of time. In this case, it can be determined that the defrost is relatively thorough. In order to save energy, the defrost can be deactivated before the next cooling cycle.

[0079] Or, in this medium-humidity environment, if Te is greater than or equal to Tf, it is sufficient to compare the current defrost exit temperature T2 with the preset fifth defrost exit temperature threshold TH5. If T2 is greater than TH5, it means that the defrost exit temperature is high, and it can be judged that the current defrost is relatively thorough. In order to save energy, defrost can be disabled before the next cooling; otherwise, defrost needs to be started after the next cooling is completed for defrosting, and the next defrost exit temperature is set to the fifth defrost exit temperature threshold Th5, and the defrost time is set to t0.

[0080] If the current ambient humidity value is greater than the preset fourth humidity threshold, defrost is started when the currently set refrigeration temperature is lower than the last set refrigeration temperature; or defrost is started when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is lower than the last defrost exit temperature; or defrost is started when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time.

[0081] Specifically, when the third temperature range is 20°C-30°C, the third humidity threshold is set to 50, and the fourth humidity threshold is set to 75. When the current ambient humidity H0 is greater than 75, it is determined that the current environment is a high humidity environment. The currently set refrigeration temperature Te is then compared with the previously set refrigeration temperature Tf. If Te is less than Tf, defrosting is initiated after the next refrigeration cycle ends, and the next defrost exit temperature is set to the fifth defrost exit temperature threshold Th5, and the defrost duration is set to t0. If Te is greater than or equal to Tf, the current defrost exit temperature T2 is compared with the previously set defrost proposal temperature T1. If the current defrost exit temperature T2 is less than the previously set defrost proposal temperature T1, there is still a possibility that defrosting is incomplete. In this case, defrosting is initiated after the next refrigeration cycle ends, and the next defrost exit temperature is set to the fifth defrost exit temperature threshold Th5, and the defrost duration is set to t0. If the current defrost exit temperature T2 is greater than or equal to the previous defrost temperature T1, the current defrost duration t2 is compared with the previous defrost duration t1. If t2 is greater than or equal to t1, it means that the current defrost exit temperature was reached after a long defrosting period, so there is still a possibility that the defrost is not thorough. In this case, it is necessary to start the defrost after the next cooling cycle ends, and set the next defrost exit temperature to the fifth defrost exit temperature threshold Th5, and set the defrost duration to t0. If t2 is less than t1, it means that a higher defrost exit temperature was reached in a relatively short period of time. In this case, it can be determined that the defrost is relatively thorough. In order to save energy, the defrost can be deactivated before the next cooling cycle.

[0082] Step S205, when the current ambient temperature value is in the preset fourth temperature range, the preset fourth defrost strategy is executed according to the set refrigeration temperature change, the current defrost exit temperature, the last defrost exit temperature, the current defrost time and the last defrost time; wherein, the preset first temperature range is smaller than the preset second temperature range, which is smaller than the preset third temperature range, which is smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters.

[0083] Specifically, in order to control defrost more accurately, when the current ambient temperature is in the preset fourth temperature range, due to the high temperature, the current ambient humidity value can be ignored. The preset fourth defrost strategy can be executed in combination with the set refrigeration temperature changes, the current defrost exit temperature, the last defrost exit temperature, the current defrost time and the last defrost time.

[0084] In some embodiments, when the current ambient temperature value is within a preset fourth temperature range, a preset fourth defrost strategy is executed according to a set refrigeration temperature change, a current defrost exit temperature, a previous defrost exit temperature, a current defrost time, and a previous defrost time, including:

[0085] Determine whether the currently set refrigeration temperature is lower than the last set refrigeration temperature; if so, start defrosting; otherwise, start defrosting when the current defrost exit temperature is lower than the last defrost exit temperature; or start defrosting when the current defrost exit temperature is higher than or equal to the last defrost exit temperature and the current defrost time is higher than or equal to the last defrost time.

[0086] Specifically, when the third temperature range is above 30°C, the currently set refrigeration temperature Te is compared with the last set refrigeration temperature Tf. If Te is less than Tf, defrosting needs to be initiated after the next refrigeration cycle ends, and the next defrost exit temperature is set to the fifth defrost exit temperature threshold Th5, and the defrost duration is set to t0. If Te is greater than or equal to Tf, the current defrost exit temperature T2 is compared with the last defrost proposal temperature T1. If the current defrost exit temperature T2 is less than the last defrost proposal temperature T1, there is still a possibility that defrosting is not complete. In this case, defrosting needs to be initiated after the next refrigeration cycle ends, and the next defrost exit temperature is set to the fifth defrost exit temperature threshold Th5, and the defrost duration is set to t0. If the current defrost exit temperature T2 is greater than or equal to the previous defrost temperature T1, the current defrost duration t2 is compared with the previous defrost duration t1. If t2 is greater than or equal to t1, it means that the current defrost exit temperature was reached after a long defrosting period, so there is still a possibility that the defrost is not thorough. In this case, it is necessary to start the defrost after the next cooling cycle ends, and set the next defrost exit temperature to the fifth defrost exit temperature threshold Th5, and set the defrost duration to t0. If t2 is less than t1, it means that a higher defrost exit temperature was reached in a relatively short period of time. In this case, it can be determined that the defrost is relatively thorough. In order to save energy, the defrost can be deactivated before the next cooling cycle.

[0087] Through the above steps S201 to S205, by obtaining the current ambient temperature value, the current ambient humidity value, the current defrost exit temperature, the last defrost exit temperature, the current defrost duration and the last defrost duration, different defrost strategies are executed according to the current different temperature and humidity environments. Compared with the prior art of defrosting once and cooling once for defrosting, this embodiment achieves precise defrosting through the detection of multiple parameters, avoiding the problem of high defrosting energy consumption caused by frequently starting defrost when defrosting is not needed, thereby reducing the energy consumption of refrigerator defrosting.

[0088] In some embodiments, the preset first defrost exit temperature threshold is smaller than the preset second defrost exit temperature threshold, smaller than the preset third defrost exit temperature threshold, smaller than the preset fourth defrost exit temperature threshold, and smaller than the preset fifth defrost exit temperature threshold.

[0089] Specifically, in steps S201 to S205, the preset first defrost exit temperature threshold TH1 is less than the preset second defrost exit temperature threshold TH2, which is less than the preset third defrost exit temperature threshold TH3, which is less than the preset fourth defrost exit temperature threshold TH4, and which is less than the preset fifth defrost exit temperature threshold TH5. These preset defrost exit temperature thresholds can be determined based on actual conditions and are not specifically limited in this embodiment. For example, Th1 = 1°C, Th2 = 1.5°C, Th3 = 2°C, Th4 = 2.5°C, and Th5 = 3°C. Furthermore, more defrost exit temperature thresholds can be set to achieve more precise control.

[0090] In another embodiment, when the refrigerator does not enter the defrost stage and directly performs refrigeration, the temperature at the start of refrigeration is recorded as the current defrost exit temperature.

[0091] Specifically, in this embodiment, there may be a situation where defrosting is not required and the refrigeration process is entered directly. At this time, there is no current defrost exit temperature. In order to continue using the defrost control method in this embodiment, the temperature at the start of refrigeration is recorded as the current defrost exit temperature in this embodiment to replace the last defrost exit temperature, and then the defrost process is continued to be controlled according to the above-mentioned defrost control method.

[0092] More specifically, Table 1 is a table of the specific defrost control method of this embodiment:

[0093] Table 1

[0094]

[0095]

[0096] For example, according to Table 1, when the refrigeration sensor senses that the temperature has reached the shutdown point, the refrigeration of the refrigerator compartment ends, the electric valve switches to the freezing side, and the refrigeration fan turns off. At this time, it is necessary to determine whether to defrost or not. The current ambient temperature T0 = 16°C and the humidity H0 = 50% are detected. The refrigeration setting temperature during this defrost is Te = 2°C, while the refrigeration setting temperature during the last defrost was Tf = 5°C, which is a case of Te < Tf. At this time, it is necessary to compare the exit temperatures of the previous two defrosts. According to the data recorded by the refrigerator, the current defrost exit temperature is T2 = 2°C, and the last defrost exit temperature was T1 = 1°C, which is a case of T2 ≥ T1. At this time, the duration of the previous two defrosts is considered. According to the refrigerator's recorded data, the current defrost duration, t2, is 6 minutes, while the previous defrost duration, t1, is 15 minutes. If t2 is less than t1, this indicates that the previous defrost took less time and had a higher exit temperature, indicating that the previous defrost was complete and that defrosting is unnecessary. Therefore, the refrigeration fan does not turn on, and the refrigerator enters the waiting phase. During this waiting phase, the refrigerator compartment exchanges heat with the environment, causing the indoor temperature to rise continuously. When the refrigeration sensor senses that the temperature has reached the start-up point, the defrost sensor temperature at this point is recorded as the current defrost exit temperature. Due to the lack of defrost, the temperature is 1°C lower at this point. At the end of the waiting phase, the valve switches to the refrigeration side, the refrigeration fan turns on, and the refrigerator compartment begins cooling. When the refrigeration sensor senses that the temperature has reached the shutdown point, refrigerator compartment cooling ends again, the electric valve switches to the freezer side, and the refrigeration fan turns off. At this point, defrosting is required again. The current ambient temperature is still T0 = 16°C and the humidity is H0 = 50%. The set temperature for the refrigeration during this defrost is Te = 2°C, while the set temperature for the previous defrost was Tf = 2°C. This corresponds to the case where Te ≥ Tf. The current defrost exit temperature, T2 = 1°C, is compared with the second defrost exit temperature threshold, Th2 = 1.5°C. If T2 < Th2, defrost is required. The current defrost limit temperature is Th2, and the defrost limit time is th0. This cycle of refrigeration, defrosting, and waiting for refrigeration is repeated. Different defrost exit temperature limits are set based on the frosting situation under different ambient temperature and humidity conditions.

[0097] This embodiment also provides a defrost control device for implementing the above-mentioned embodiments and preferred embodiments. Details already described will not be repeated. The terms "module," "unit," "subunit," etc. used below may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0098] Figure 3 This is a structural block diagram of the defrost control device of this embodiment. Figure 3As shown, the device 30 includes: an acquisition module 31, a first execution module 32, a second execution module 33, a third execution module 34 and a fourth execution module 35, wherein:

[0099] An acquisition module 31 is used to acquire the current ambient temperature, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration;

[0100] A first execution module 32 is configured to execute a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature when the current ambient temperature is within a preset first temperature range;

[0101] A second execution module 33 is configured to execute a preset second defrost strategy according to a preset refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature is within a preset second temperature range;

[0102] a third execution module 34 configured to execute a preset third defrost strategy when the current ambient temperature is within a preset third temperature range, based on a preset refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration;

[0103] a fourth execution module 35 for executing a preset fourth defrost strategy according to a preset refrigeration temperature change, a current defrost exit temperature, a previous defrost exit temperature, a current defrost duration, and a previous defrost duration when the current ambient temperature is within a preset fourth temperature range;

[0104] Among them, the preset first temperature range is smaller than the preset second temperature range, which is smaller than the preset third temperature range, which is smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters.

[0105] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0106] In this embodiment, a refrigerator is provided, which uses the defrost control method described in any of the above embodiments, including: a refrigeration chamber and a defrost module; wherein,

[0107] The defrost module is located in the refrigeration compartment and is used to defrost the refrigeration compartment.

[0108] In addition, in combination with the defrost control method provided in the above embodiments, a storage medium may be provided in this embodiment to implement the defrost control method. The storage medium stores a computer program; when the computer program is executed by a processor, any one of the defrost control methods in the above embodiments is implemented.

[0109] It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0110] Obviously, the accompanying drawings are merely examples or embodiments of the present application. A person skilled in the art can also apply the present application to other similar situations based on these drawings without inventive effort. Furthermore, it is understandable that, although the work involved in this development process may be complex and lengthy, certain design, manufacturing, or production changes based on the technical content disclosed in this application are merely routine technical means for a person skilled in the art and should not be considered to constitute a deficiency in the disclosure of the present application.

[0111] The term "embodiment" as used in this application refers to specific features, structures, or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily mean that the embodiment is the same, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is understood, either explicitly or implicitly, by those skilled in the art that the embodiments described in this application can be combined with other embodiments when there is no conflict.

[0112] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0113] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A defrost control method, characterized in that: include: Get the current ambient temperature, current ambient humidity, current defrost exit temperature, last defrost exit temperature, current defrost duration, and last defrost duration; When the current ambient temperature is within a preset first temperature range, executing a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature; When the current ambient temperature is within a preset second temperature range, the preset second defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time, and the previous defrost time; When the current ambient temperature is within a preset third temperature range, a preset third defrost strategy is executed according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the last defrost exit temperature, the current defrost time, and the last defrost time; When the current ambient temperature value is within a preset fourth temperature range, executing a preset fourth defrost strategy according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time, and the previous defrost time; Among them, the preset first temperature range is smaller than the preset second temperature range, which is smaller than the preset third temperature range, which is smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters.

2. The defrost control method according to claim 1, characterized in that: When the current ambient temperature is within a preset first temperature range, executing a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature includes: When the current ambient temperature is within a preset first temperature range, determining whether the current ambient humidity value is less than or equal to a preset first humidity threshold; If so, starting defrost when the current defrost exit temperature is less than or equal to a preset first defrost exit temperature threshold; Otherwise, when the current defrost exit temperature is less than or equal to a preset second defrost exit temperature threshold, defrost is started.

3. The defrost control method according to claim 1, characterized in that: When the current ambient temperature is within a preset second temperature range, executing a preset second defrost strategy according to a set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration, includes: When the current ambient temperature value is within a preset second temperature range, determining whether the current ambient humidity value is less than or equal to a preset second humidity threshold; If so, when the currently set refrigeration temperature is greater than or equal to the refrigeration temperature set last time, and the current defrost exit temperature is less than or equal to the preset second defrost exit temperature threshold, defrost is started; or when the currently set refrigeration temperature is less than the refrigeration temperature set last time, and the current defrost exit temperature is less than or equal to the previous defrost exit temperature, defrost is started; or when the currently set refrigeration temperature is less than the refrigeration temperature set last time, and the current defrost exit temperature is greater than or equal to the previous defrost exit temperature, and the current defrost duration is greater than or equal to the previous defrost duration, defrost is started; Otherwise, when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset third defrost exit temperature threshold, defrost is started; or when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is less than the last defrost exit temperature, defrost is started; or when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time, defrost is started.

4. The defrost control method according to claim 1, characterized in that: When the current ambient temperature is within a preset third temperature range, executing a preset third defrost strategy according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration, includes: When the current ambient temperature value is within a preset third temperature range, determining the humidity range within which the current ambient humidity value is located; If the current ambient humidity value is less than or equal to the preset third humidity threshold, then when the currently set refrigeration temperature is greater than or equal to the previously set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset fourth defrost exit temperature threshold, defrost is started; or, when the currently set refrigeration temperature is less than the previously set refrigeration temperature, and the current defrost exit temperature is less than the previously defrost exit temperature, defrost is started; or, when the currently set refrigeration temperature is less than the previously set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the previously defrost exit temperature, and the current defrost duration is greater than or equal to the previously defrost duration, defrost is started; If the current ambient humidity value is greater than the preset third humidity value and less than or equal to the preset fourth humidity threshold; then when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is less than or equal to the preset fifth defrost exit temperature threshold, defrost is started; or, when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is less than the last defrost exit temperature, defrost is started; or, when the currently set refrigeration temperature is less than the last set refrigeration temperature, and the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time, defrost is started; If the current ambient humidity value is greater than the preset fourth humidity threshold, defrost is started when the currently set refrigeration temperature is lower than the last set refrigeration temperature; or defrost is started when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, and the current defrost exit temperature is lower than the last defrost exit temperature; or defrost is started when the currently set refrigeration temperature is greater than or equal to the last set refrigeration temperature, the current defrost exit temperature is greater than or equal to the last defrost exit temperature, and the current defrost time is greater than or equal to the last defrost time.

5. The defrost control method according to claim 1, characterized in that: When the current ambient temperature value is within a preset fourth temperature range, executing a preset fourth defrost strategy according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time, and the previous defrost time, includes: Determine whether the currently set refrigeration temperature is lower than the last set refrigeration temperature; If so, start defrosting; Otherwise, defrost is started when the current defrost exit temperature is lower than the previous defrost exit temperature; or when the current defrost exit temperature is greater than or equal to the previous defrost exit temperature and the current defrost duration is greater than or equal to the previous defrost duration.

6. The defrost control method according to any one of claims 1 to 5, characterized in that: The preset first defrost exit temperature threshold is smaller than the preset second defrost exit temperature threshold, smaller than the preset third defrost exit temperature threshold, smaller than the preset fourth defrost exit temperature threshold, and smaller than the preset fifth defrost exit temperature threshold.

7. The defrost control method according to any one of claims 1 to 5, characterized in that: When the refrigerator does not enter the defrost stage and directly performs refrigeration, the temperature at the start of refrigeration is recorded as the current defrost exit temperature.

8. A defrost control device, characterized in that: include: an acquisition module, a first execution module, a second execution module, a third execution module, and a fourth execution module, wherein: The acquisition module is used to obtain the current ambient temperature value, the current ambient humidity value, the current defrost exit temperature, the previous defrost exit temperature, the current defrost time and the previous defrost time; The first execution module is configured to execute a preset first defrost strategy according to the current ambient humidity value and the current defrost exit temperature when the current ambient temperature is within a preset first temperature range; The second execution module is configured to execute a preset second defrost strategy according to a set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature is within a preset second temperature range; The third execution module is configured to execute a preset third defrost strategy according to the set refrigeration temperature change, the current ambient humidity, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature is within a preset third temperature range; The fourth execution module is configured to execute a preset fourth defrost strategy according to the set refrigeration temperature change, the current defrost exit temperature, the previous defrost exit temperature, the current defrost duration, and the previous defrost duration when the current ambient temperature value is within a preset fourth temperature range; Among them, the preset first temperature range is smaller than the preset second temperature range, which is smaller than the preset third temperature range, which is smaller than the preset fourth temperature range; the preset first defrost strategy, the preset second defrost strategy, the preset third defrost strategy and the preset fourth defrost strategy respectively correspond to different defrost start parameters.

9. A refrigerator, applying the defrost control method according to any one of claims 1 to 7, characterized in that: include: Refrigeration room and defrost module; among them, The defrost module is located in the refrigeration chamber and is used for defrosting the refrigeration chamber.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the defrost control method according to any one of claims 1 to 7 are implemented.

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