Defrosting control method and apparatus for a refrigerator appliance

Abstract

The present disclosure relates to a defrosting control method and device of a refrigerator, and relates to the technical field of refrigerator. The method comprises: collecting a plurality of first running information corresponding to the refrigerator in a first preset period and a plurality of second running information corresponding to the refrigerator in a second preset period; determining a first average temperature difference and an average fluctuation temperature difference between a first freezing chamber temperature and a first evaporator temperature according to the plurality of first running information, and determining a defrosting temperature difference threshold according to the first average temperature difference and the average fluctuation temperature difference; and determining a second average temperature difference between a second freezing chamber temperature and a second evaporator temperature according to the plurality of second running information; in response to the second average temperature difference being greater than or equal to the defrosting temperature difference threshold, controlling the refrigerator to start a defrosting program, and in response to the second average temperature difference being less than the defrosting temperature difference threshold, controlling the refrigerator not to start the defrosting program. The method helps to avoid the situation of defrosting too early or too late, improves the refrigeration effect and reduces energy consumption.

Description

Technical Field

[0001] This disclosure relates to the field of refrigerator equipment technology, and in particular to a defrosting control method and device for refrigerator equipment. Background Technology

[0002] After running for a period of time, the evaporator of a refrigerator will frost up. When the frost on the evaporator becomes too thick, it will affect the refrigerator's cooling performance. To ensure the refrigerator's cooling effect, defrosting is necessary. Related technologies employ timed defrosting strategies. However, timed defrosting strategies may result in defrosting too early or too late. Defrosting too early increases unnecessary energy consumption and causes temperature fluctuations in the freezer compartment, affecting food preservation. Defrosting too late leads to excessive frost buildup on the evaporator, further reducing the refrigerator's cooling performance and thus lowering the user experience. Summary of the Invention

[0003] To overcome the problems existing in the related technologies, this disclosure provides a defrosting control method and device for refrigerator equipment.

[0004] According to a first aspect of the present disclosure, a defrosting control method for a refrigerator is provided, comprising:

[0005] Collect multiple first operating information corresponding to the refrigerator device within a first preset period and multiple second operating information corresponding to the second preset period. The first operating information includes the first freezer temperature and the first evaporator temperature. The second operating information includes the second freezer temperature and the second evaporator temperature. The first preset period includes a first preset number of compressor start-stop cycles after the defrosting program is completed.

[0006] Based on the plurality of first operating information, a first average temperature difference and an average fluctuating temperature difference between the first freezer compartment temperature and the first evaporator temperature are determined; based on the first average temperature difference and the average fluctuating temperature difference, a defrost temperature difference threshold is determined; and based on the plurality of second operating information, a second average temperature difference between the second freezer compartment temperature and the second evaporator temperature is determined.

[0007] In response to the second average temperature difference being greater than or equal to the defrost temperature difference threshold, the refrigerator is controlled to start the defrost program; in response to the second average temperature difference being less than the defrost temperature difference threshold, the refrigerator is controlled not to start the defrost program.

[0008] In some embodiments, the first operating information includes first operating information corresponding to a plurality of first operating frequencies; the step of determining a first average temperature difference and an average fluctuating temperature difference between the first freezer temperature and the first evaporator temperature based on the plurality of first operating information, and determining a defrost temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference, includes: for each first operating frequency, determining a first average temperature difference and an average fluctuating temperature difference corresponding to the first operating frequency based on the plurality of first operating information corresponding to the first operating frequency; and determining a defrost temperature difference threshold corresponding to the first operating frequency based on the first average temperature difference and the average fluctuating temperature difference corresponding to the first operating frequency.

[0009] In some embodiments, the second operating information includes second operating information corresponding to each of a plurality of second operating frequencies; determining the second average temperature difference between the second freezer temperature and the second evaporator temperature based on the plurality of second operating information includes: for each second operating frequency, determining the second average temperature difference corresponding to the second operating frequency based on the plurality of second operating information corresponding to the second operating frequency.

[0010] In some embodiments, controlling the refrigerator to start a defrost procedure in response to the second average temperature difference being greater than or equal to the defrost temperature difference threshold includes: determining whether there is a candidate operating frequency with the same operating frequency among the plurality of first operating frequencies and the plurality of second operating frequencies; if so, selecting the operating frequency with the largest number of first operating information from the at least one candidate operating frequency as a target operating frequency based on the number of first operating information corresponding to each of the at least one candidate operating frequency; and controlling the refrigerator to start a defrost procedure in response to the second average temperature difference corresponding to the target operating frequency being greater than or equal to the defrost temperature difference threshold corresponding to the target operating frequency.

[0011] In some embodiments, the method further includes: if the local defrost mode is not present, switching to a local defrost mode, wherein the local defrost mode is used to control whether to start the defrost program based on the cumulative cooling time of the compressor.

[0012] In some embodiments, the first operating information further includes the ambient temperature of the refrigerator device; before determining the first average temperature difference and average fluctuation temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the plurality of first operating information, the method further includes: obtaining the maximum ambient temperature and the minimum ambient temperature among the plurality of first operating information; determining the ambient temperature difference between the maximum ambient temperature and the minimum ambient temperature; controlling the refrigerator device to switch to local defrost mode in response to the ambient temperature difference being greater than a preset temperature difference threshold, and performing the step of determining the first average temperature difference and average fluctuation temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the plurality of first operating information in response to the ambient temperature difference being less than or equal to the preset temperature difference threshold.

[0013] In some embodiments, the second preset period includes a second preset number of compressor start-stop periods following the first preset period.

[0014] In some embodiments, the acquisition of multiple first operating information corresponding to the refrigerator device within a first preset period includes: acquiring one or more of the refrigerator device's door open / close status, compressor status, and refrigerator compartment damper status; determining an effective acquisition time period for the first preset period based on one or more of the door open / close status, compressor status, and refrigerator compartment damper status; and acquiring multiple first operating information corresponding to the refrigerator device within the effective acquisition time period.

[0015] In some embodiments, determining the effective data collection period of the first preset period based on the door opening / closing state includes: determining the data collection period of the closed state as an effective data collection period in response to the door opening / closing state being closed; determining the data collection period of the open state as an invalid data collection period in response to the door opening / closing state switching from closed to open; and determining whether the temperature of the freezer compartment has recovered to the temperature before the door was opened in response to the door opening / closing state, determining the data collection period that has not recovered as an invalid data collection period, and determining the data collection period after recovery as an effective data collection period.

[0016] In some embodiments, determining the effective collection time period of the first preset period based on the compressor status includes: determining the collection time period of the shutdown state as an invalid collection time period in response to the compressor status being in a shutdown state; determining whether the temperature of the freezer compartment is lower than a preset temperature in response to the compressor status being in a running state; determining the collection time period as an invalid collection time period in response to the temperature of the freezer compartment being lower than the preset temperature; and determining the collection time period as a valid collection time period in response to the temperature of the freezer compartment being greater than or equal to the preset temperature.

[0017] In some embodiments, determining the effective collection time period of the first preset cycle based on the state of the refrigerator compartment damper includes: determining the collection time period in the closed state as an effective collection time period in response to the refrigerator compartment damper being in the closed state; determining the collection time period in the open state as an invalid collection time period in response to the refrigerator compartment damper being in the open state; and determining whether the temperature difference between the first freezer compartment temperature and the first evaporator temperature has recovered to the temperature difference between the first freezer compartment temperature and the first evaporator temperature before the compressor stopped, determining the collection time period that has not recovered as an invalid collection time period, and determining the collection time period after recovery as an effective collection time period in response to the refrigerator compartment damper being in the closed state.

[0018] According to a second aspect of the present disclosure, a defrosting control device for a refrigerator is provided, for executing the defrosting control method for a refrigerator as described in any of the above embodiments; the defrosting control device for the refrigerator includes:

[0019] The acquisition module is configured to acquire multiple first operating information corresponding to the refrigerator device within a first preset period and multiple second operating information corresponding to the refrigerator device within a second preset period. The first operating information includes the first freezer temperature and the first evaporator temperature, and the second operating information includes the second freezer temperature and the second evaporator temperature. The first preset period includes a first preset number of compressor start-stop cycles after the defrosting program is completed.

[0020] The determining module is configured to determine, based on the plurality of first operating information, a first average temperature difference and an average fluctuating temperature difference between the first freezer compartment temperature and the first evaporator temperature; determine a defrost temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference; and determine, based on the plurality of second operating information, a second average temperature difference between the second freezer compartment temperature and the second evaporator temperature.

[0021] The control module is configured to control the refrigerator to start the defrosting program in response to the second average temperature difference being greater than or equal to the defrosting temperature difference threshold, and to control the refrigerator not to start the defrosting program in response to the second average temperature difference being less than the defrosting temperature difference threshold.

[0022] In some embodiments, the first operating information includes first operating information corresponding to a plurality of first operating frequencies; the determining module determines a first average temperature difference and an average fluctuating temperature difference between the first freezer temperature and the first evaporator temperature based on the plurality of first operating information, and determines a defrost temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference, including: for each first operating frequency, determining a first average temperature difference and an average fluctuating temperature difference corresponding to the first operating frequency based on the plurality of first operating information corresponding to the first operating frequency; and determining a defrost temperature difference threshold corresponding to the first operating frequency based on the first average temperature difference and the average fluctuating temperature difference corresponding to the first operating frequency.

[0023] In some embodiments, the second operating information includes second operating information corresponding to each of a plurality of second operating frequencies; the second determining module determines a second average temperature difference between the second freezer temperature and the second evaporator temperature based on the plurality of second operating information, including: for each second operating frequency, determining a second average temperature difference corresponding to the second operating frequency based on the plurality of second operating information corresponding to the second operating frequency.

[0024] In some embodiments, the control module controls the refrigerator to start a defrost program in response to the second average temperature difference being greater than or equal to the defrost temperature difference threshold, including: determining whether there is a candidate operating frequency with the same operating frequency among the plurality of first operating frequencies and the plurality of second operating frequencies; if so, selecting the operating frequency with the largest number of first operating information from the at least one candidate operating frequency as the target operating frequency based on the number of first operating information corresponding to each of the at least one candidate operating frequency; and controlling the refrigerator to start a defrost program in response to the second average temperature difference corresponding to the target operating frequency being greater than or equal to the defrost temperature difference threshold corresponding to the target operating frequency.

[0025] In some embodiments, the control module is further configured to: switch to a local defrost mode if the defrost mode does not exist, the local defrost mode being used to control whether to start the defrost program based on the cumulative cooling time of the compressor.

[0026] In some embodiments, the first operating information further includes the ambient temperature of the refrigerator device; the determining module is configured to: acquire the maximum and minimum ambient temperatures among the plurality of first operating information; determine the ambient temperature difference between the maximum and minimum ambient temperatures; control the refrigerator device to switch to local defrosting mode in response to the ambient temperature difference being greater than a preset temperature difference threshold; and execute the step of determining the first average temperature difference and average fluctuation temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the plurality of first operating information in response to the ambient temperature difference being less than or equal to the preset temperature difference threshold.

[0027] In some embodiments, the second preset period includes a second preset number of compressor start-stop periods following the first preset period.

[0028] In some embodiments, the acquisition module acquires multiple first operating information corresponding to the refrigerator device within a first preset period, including: acquiring one or more of the refrigerator device's door open / close status, compressor status, and refrigerator compartment damper status; determining an effective acquisition time period for the first preset period based on one or more of the door open / close status, compressor status, and refrigerator compartment damper status; and acquiring multiple first operating information corresponding to the refrigerator device within the effective acquisition time period.

[0029] In some embodiments, the acquisition module determines the effective acquisition time period of the first preset period based on the door opening / closing state, including: determining the acquisition time period of the closed state as the effective acquisition time period in response to the door opening / closing state being closed; determining the acquisition time period of the open state as the invalid acquisition time period in response to the door opening / closing state switching from closed to open; and determining whether the temperature of the freezer compartment has recovered to the temperature before the door was opened in response to the door opening / closing state, determining the acquisition time period that has not recovered as the invalid acquisition time period, and determining the acquisition time period after recovery as the effective acquisition time period.

[0030] In some embodiments, the acquisition module determines the valid acquisition time period of the first preset period based on the compressor status, including: determining the acquisition time period of the shutdown state as an invalid acquisition time period in response to the compressor status being in a shutdown state; determining whether the temperature of the freezer compartment is lower than a preset temperature in response to the compressor status being in a running state; determining the acquisition time period as an invalid acquisition time period in response to the temperature of the freezer compartment being lower than the preset temperature; and determining the acquisition time period as a valid acquisition time period in response to the temperature of the freezer compartment being greater than or equal to the preset temperature.

[0031] In some embodiments, the acquisition module determines the effective acquisition time period of the first preset cycle based on the state of the refrigerator compartment damper, including: determining the acquisition time period in the closed state as an effective acquisition time period in response to the refrigerator compartment damper being in the closed state; determining the acquisition time period in the open state as an invalid acquisition time period in response to the refrigerator compartment damper being in the open state; and determining whether the temperature difference between the freezer compartment temperature and the evaporator temperature has recovered to the temperature difference between the freezer compartment temperature and the evaporator temperature before the compressor stopped, determining the acquisition time period that has not recovered as an invalid acquisition time period, and determining the acquisition time period after recovery as an effective acquisition time period in response to the refrigerator compartment damper being in the closed state.

[0032] According to a third aspect of the present disclosure, a refrigerator device is provided, including a processor, a communication component, and a memory. The processor is communicatively connected to the communication component and the memory. The memory is used to store computer-executed instructions. The communication component is used to communicate and interact with external devices. The processor is used to execute the computer-executed instructions stored in the memory to implement the defrosting control method of the refrigerator device as described above.

[0033] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided that, when instructions in the computer-readable storage medium are executed by a processor of a refrigerator device, enables the refrigerator device to implement the defrosting control method of the refrigerator device as described above.

[0034] According to a fifth aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor of a refrigerator device, enables the refrigerator device to implement the defrosting control method of the refrigerator device as described above.

[0035] The present disclosure provides a defrosting control method and apparatus for a refrigerator. The method includes: collecting multiple first operating information corresponding to a first preset period and multiple second operating information corresponding to a second preset period for the refrigerator; the first operating information includes a first freezer temperature and a first evaporator temperature; the second operating information includes a second freezer temperature and a second evaporator temperature; the first preset period includes a first preset number of compressor start-stop cycles after the defrosting program is completed; determining a first average temperature difference and an average fluctuating temperature difference between the first freezer temperature and the first evaporator temperature based on the multiple first operating information; determining a defrosting temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference; determining a second average temperature difference between the second freezer temperature and the second evaporator temperature based on the multiple second operating information; controlling the refrigerator to start a defrosting program in response to the second average temperature difference being greater than or equal to the defrosting temperature difference threshold; and controlling the refrigerator not to start a defrosting program in response to the second average temperature difference being less than the defrosting temperature difference threshold. In this embodiment, the cooling effect of the evaporator can be determined based on the average temperature difference between the freezer compartment temperature and the evaporator temperature. Then, based on multiple first operating information within a first preset period, a defrost temperature difference threshold is determined. Based on multiple second operating information within a second preset period, the cooling effect of the evaporator is determined. When the cooling effect of the evaporator begins to decay and reaches the defrost temperature difference threshold, the defrost program is started. This helps to avoid the refrigerator from defrosting too early or too late, thus reducing the energy consumption of the refrigerator while ensuring its cooling effect. Therefore, the user experience of the refrigerator is improved.

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0038] Figure 1 This is a flowchart illustrating a defrosting control method for a refrigerator device according to some embodiments of the present disclosure;

[0039] Figure 2 This is a schematic diagram illustrating a method for filtering valid data based on door opening / closing status, according to some embodiments of this disclosure.

[0040] Figure 3 This is a schematic diagram illustrating a compressor status screening for valid data according to some embodiments of the present disclosure;

[0041] Figure 4 This is a schematic diagram illustrating the screening of valid data based on the status of a refrigerator compartment damper, according to some embodiments of this disclosure;

[0042] Figure 5 This is a schematic diagram illustrating a defrosting control method for a refrigerator device according to some embodiments of the present disclosure;

[0043] Figure 6 This is a block diagram illustrating a defrosting control device for a refrigerator according to some embodiments of the present disclosure;

[0044] Figure 7 This is a block diagram illustrating a refrigerator device according to some embodiments of the present disclosure. Detailed Implementation

[0045] Some embodiments of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0046] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0047] After running for a period of time, the evaporator of a refrigerator will frost up. When the frost on the evaporator becomes too thick, it will affect the refrigerator's cooling performance. To ensure the refrigerator's cooling effect, defrosting is necessary. Related technologies employ timed defrosting strategies. However, different refrigerators operate under different conditions, and timed defrosting strategies may result in defrosting too early or too late. Defrosting too early increases unnecessary energy consumption and causes temperature fluctuations in the freezer compartment, affecting food preservation. Defrosting too late leads to excessive frost buildup on the evaporator, further impacting the refrigerator's cooling performance and thus reducing the user experience.

[0048] Therefore, how to avoid refrigerators defrosting too early or too late in order to improve the user experience is a key technical problem that urgently needs to be solved.

[0049] To enable those skilled in the art to better understand the present disclosure, the present disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Figure 1 This is a flowchart illustrating a defrosting control method for a refrigerator device according to some embodiments of this disclosure. Figure 1 As shown, the defrosting control method of this refrigerator includes:

[0051] S101. Collect multiple first operating information corresponding to the refrigerator equipment within a first preset period and multiple second operating information corresponding to the refrigerator equipment within a second preset period. The first operating information includes the first freezer temperature and the first evaporator temperature. The second operating information includes the second freezer temperature and the second evaporator temperature. The first preset period includes a first preset number of compressor start-stop cycles after the defrosting program is completed.

[0052] In this embodiment, the first operating information and the second operating information may include operating information of the refrigerator device, or operating information of various components within the refrigerator device. Optionally, the first operating information includes the first freezer compartment temperature and the first evaporator temperature. The first operating information may also include the compressor operating frequency, the refrigerator compartment damper status, the ambient temperature, etc. The second operating information includes the second freezer compartment temperature and the second evaporator temperature. The second operating information may also include the compressor operating frequency, the refrigerator compartment damper status, the ambient temperature, etc.

[0053] The duration of the first and second preset periods is not specifically limited. For example, the first preset period can be 20 minutes, 30 minutes, or 60 minutes, etc. The second preset period can be 20 minutes, 30 minutes, or 60 minutes, etc.

[0054] In some embodiments, the first preset cycle may include one or more compressor start-stop cycles. The second preset cycle may include one or more compressor start-stop cycles. A compressor start-stop cycle includes a compressor start-up duration and a compressor stop-down duration.

[0055] Optionally, the first preset cycle includes a first preset number of compressor start-stop cycles after the defrosting procedure is completed, and the second preset cycle includes a second preset number of compressor start-stop cycles after the first preset cycle.

[0056] The values ​​of the first preset quantity and the second preset quantity are not specifically limited. For example, the first preset cycle includes two compressor start-stop cycles after the defrosting program ends, and the second preset cycle includes two compressor start-stop cycles after the first preset cycle.

[0057] In this embodiment of the disclosure, since the evaporator is not frosted and the cooling effect is relatively good after the first preset cycle is completed, the multiple first operating information collected through the first preset cycle helps to improve the accuracy of determining the defrost temperature difference threshold.

[0058] In some embodiments, the maximum cycle duration corresponding to the first preset cycle and the second preset cycle can also be limited. For example, the maximum cycle duration corresponding to the first preset cycle is 2 hours, and the maximum cycle duration corresponding to the second preset cycle is 2 hours.

[0059] In this embodiment of the disclosure, by limiting the maximum cycle duration corresponding to the first preset cycle and the second preset cycle, the situation of defrosting being delayed due to excessively long collection time of the first and second operating information is avoided, thus further improving the user experience of the refrigerator equipment.

[0060] It should be noted that under certain conditions, the accuracy of the first operating information collected within the first preset period is low. In this case, the effective collection time period within the first preset period can be determined according to the operating status of the refrigerator equipment, and the first operating information within the effective collection time period can be collected, while filtering the first operating information collected under specific conditions in the first preset period.

[0061] In some embodiments, collecting multiple first operating information corresponding to the refrigerator device within a first preset period includes: acquiring one or more of the refrigerator device's door open / close status, compressor status, and refrigerator compartment damper status; determining an effective collection time period for the first preset period based on one or more of the door open / close status, compressor status, and refrigerator compartment damper status; and collecting multiple first operating information corresponding to the refrigerator device within the effective collection time period.

[0062] In this embodiment of the disclosure, by filtering the first operating information collected in a specific state during the first preset period through one or more of the door opening / closing state, compressor state, and refrigerator compartment damper state, the accuracy of multiple first operating information collected within the first preset period is improved.

[0063] Optionally, based on the door opening / closing status, the effective data collection time period for the first preset cycle is determined, including: in response to the door opening / closing status being closed, determining the data collection time period in the closed state as the effective data collection time period; in response to the door opening / closing status switching from closed to open, determining the data collection time period in the open state as the invalid data collection time period; in response to the door opening / closing status switching from open to closed, determining whether the temperature of the freezer compartment has recovered to the temperature before the door was opened, determining the data collection time period that has not recovered as the invalid data collection time period, and determining the data collection time period after recovery as the effective data collection time period.

[0064] For example, such as Figure 2 As shown, the refrigerator door opening / closing status is detected. If the door is detected as closed, the first operational information collected is considered valid data. If the door is detected as open, the freezer compartment temperature recovery process is monitored when switching from open to closed. It is determined whether the freezer compartment temperature has recovered to the temperature before the door was opened. If yes, the freezer compartment temperature recovery is considered complete; otherwise, the freezer compartment temperature has not recovered. The first operational information collected during the freezer compartment temperature recovery period is invalid data, while the first operational information collected after the freezer compartment temperature has recovered is valid data.

[0065] In this embodiment of the disclosure, by filtering the first operating information collected in the open state and the first operating information collected under the influence of the open state through the door opening and closing state, the accuracy of multiple first operating information collected within the effective collection time period of the first preset period is improved.

[0066] Optionally, based on the compressor status, the effective data collection period of the first preset cycle is determined, including: in response to the compressor status being in a stopped state, determining the data collection period in the stopped state as an invalid data collection period; in response to the compressor status being in a running state, determining whether the temperature of the freezer compartment is lower than a preset temperature; in response to the temperature of the freezer compartment being lower than the preset temperature, determining the data collection period as an invalid data collection period; in response to the temperature of the freezer compartment being greater than or equal to the preset temperature, determining the data collection period as a valid data collection period.

[0067] The setting of the preset temperature is not specifically limited. For example, such as... Figure 3As shown, the preset temperature can be the freezer's set temperature +1℃. For example, if the freezer's set temperature is -18℃ (minus 18 degrees Celsius), the preset temperature is -17℃. When the freezer's temperature is lower than the preset temperature, the data collection period is considered invalid, and the collected data is invalid. When the freezer's temperature is greater than or equal to the preset temperature, the data collection period is considered valid, and valid data is recorded in groups according to the compressor's operating frequency.

[0068] In this embodiment of the disclosure, by filtering the first operating information collected under the compressor stop state and under the influence of the stop state based on the compressor status, the accuracy of multiple first operating information collected within the effective collection time period of the first preset period is improved.

[0069] Optionally, based on the status of the refrigerator compartment damper, the effective data collection period of the first preset cycle is determined, including: in response to the refrigerator compartment damper being in a closed state, determining the data collection period in the closed state as the effective data collection period; in response to the refrigerator compartment damper switching from a closed state to an open state, determining the data collection period in the open state as the invalid data collection period; in response to the refrigerator compartment damper switching from an open state to a closed state, determining whether the temperature difference between the first freezer compartment temperature and the first evaporator temperature has recovered to the temperature difference between the first freezer compartment temperature and the first evaporator temperature before the compressor stopped, determining the data collection period that has not recovered as the invalid data collection period, and determining the data collection period after recovery as the effective data collection period.

[0070] Optionally, such as Figure 4 As shown, the temperature difference between the first freezer compartment and the first evaporator before the compressor stops can be the average of multiple temperature differences collected before the compressor stops, and can be represented as Tavg. For example, the two temperature differences collected before the compressor stops are ΔT1 and ΔT2, and the temperature difference between the first freezer compartment and the first evaporator before the compressor stops is (ΔT1 + ΔT2) / 2. After the refrigerator compartment damper is closed, if the temperature difference between the first freezer compartment and the first evaporator is greater than or equal to (ΔT1 + ΔT2) / 2, it is determined that the temperature has recovered to the level before the compressor stops. The collected time period after recovery is determined to be the valid collected time period, and the collected first operating information is valid data. If the temperature difference between the first freezer compartment and the first evaporator is less than (ΔT1 + ΔT2) / 2, it is determined that the temperature has not recovered to the level before the compressor stops, and the collected first operating information is invalid data.

[0071] In this embodiment of the disclosure, by filtering the first operating information collected under the condition that the refrigerator compartment is open and that is affected by the condition that the refrigerator compartment is open, the accuracy of multiple first operating information collected within the effective collection time period of the first preset cycle is improved.

[0072] Under certain specific conditions, the accuracy of the second operating information collected within the second preset period is relatively low. In such cases, the effective collection time period within the second preset period can be determined based on the operating status of the refrigerator equipment, and the second operating information within the effective collection time period can be collected. The second operating information collected under specific conditions within the second preset period can then be filtered. The method for filtering the second operating information collected under specific conditions within the second preset period is the same as the method for filtering the first operating information collected under specific conditions within the first preset period, and will not be described again here.

[0073] S102. Based on multiple first operating information, determine the first average temperature difference and the average fluctuating temperature difference between the first freezer compartment temperature and the first evaporator temperature; based on the first average temperature difference and the average fluctuating temperature difference, determine the defrost temperature difference threshold; and based on multiple second operating information, determine the second average temperature difference between the second freezer compartment temperature and the second evaporator temperature.

[0074] In some embodiments, a first average temperature difference can be determined by the first freezer temperature and the first evaporator temperature in the first operating information, and the first average temperature difference can be used as an effective temperature difference to obtain a sequence of effective temperature differences corresponding to multiple first operating information.

[0075] In other embodiments, the effective temperature difference sequences corresponding to multiple first operating information can be grouped according to the operating frequency to obtain effective temperature difference sequences at different operating frequencies.

[0076] In some embodiments, the first operating information includes first operating information corresponding to a plurality of first operating frequencies; this step may include: for each first operating frequency, determining the first average temperature difference and average fluctuation temperature difference between the first freezer temperature and the first evaporator temperature at the first operating frequency based on the plurality of first operating information corresponding to the first operating frequency.

[0077] Optionally, the first average temperature difference between the first freezer compartment temperature and the first evaporator temperature is: Ac=(1 / n)×ΣΔT k Where k takes values ​​from 1 to n, and n represents the number of first operating information corresponding to the first operating frequency.

[0078] Optionally, the average temperature fluctuation difference between the first freezer compartment temperature and the first evaporator temperature is: Md=(1 / n)×Σ|ΔT k -Ac|; where k takes values ​​from 1 to n, and n represents the number of first operating information corresponding to the first operating frequency.

[0079] In some embodiments, the first operating information further includes the ambient temperature of the refrigerator device; before determining the first average temperature difference and average fluctuation temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the plurality of first operating information, the method further includes: acquiring the maximum ambient temperature and the minimum ambient temperature among the plurality of first operating information; determining the ambient temperature difference between the maximum ambient temperature and the minimum ambient temperature; controlling the refrigerator device to switch to local defrost mode in response to the ambient temperature difference being greater than a preset temperature difference threshold; and performing the step of determining the first average temperature difference and average fluctuation temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the plurality of first operating information in response to the ambient temperature difference being less than or equal to the preset temperature difference threshold.

[0080] In this embodiment of the disclosure, the preset temperature difference threshold is not specifically limited. Optionally, the preset temperature difference threshold can be 4°C, 5°C, or 6°C.

[0081] In this embodiment of the present disclosure, since the temperature of the first freezer compartment and the temperature of the first evaporator are greatly affected by the ambient temperature when the ambient temperature difference is large or the ambient temperature changes significantly, the intelligent defrosting mode can be exited and the local defrosting mode can be switched. This helps to ensure the accuracy of starting the defrosting program, thereby improving the operational stability of the refrigerator.

[0082] In this embodiment of the disclosure, the defrost temperature difference thresholds corresponding to different operating frequencies may be the same or different. Optionally, when the defrost temperature difference thresholds corresponding to different operating frequencies are different, for each first operating frequency, the first average temperature difference and the average fluctuating temperature difference corresponding to the first operating frequency can be determined based on multiple first operating information corresponding to the first operating frequency, and the defrost temperature difference threshold corresponding to the first operating frequency can be determined based on the first average temperature difference and the average fluctuating temperature difference at the first operating frequency.

[0083] Optionally, the defrost temperature difference threshold can be the sum of the first average temperature difference and the average fluctuating temperature difference. Wherein, the defrost temperature difference threshold As = the first average temperature difference Ac + the average fluctuating temperature difference Md.

[0084] In some embodiments, such as Figure 5 As shown, if the average fluctuating temperature difference is greater than the preset fluctuating temperature difference threshold, the refrigerator is controlled to switch to local defrosting mode. In response to the average fluctuating temperature difference being less than or equal to the preset fluctuating temperature difference threshold, the step of determining the defrosting temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference is executed.

[0085] In this embodiment of the disclosure, the preset temperature fluctuation threshold is not specifically limited. Optionally, the preset temperature fluctuation threshold may be 0.5℃, 1℃, or 1.5℃.

[0086] In this embodiment of the present disclosure, since the accuracy of the temperature of the first freezer compartment and the temperature of the first evaporator is low when the average temperature fluctuation difference is large, the intelligent defrosting mode can be exited and the local defrosting mode can be switched. This helps to ensure the accuracy of starting the defrosting program, thereby improving the operational stability of the refrigerator.

[0087] In some embodiments, the temperature difference ΔT between the second freezer compartment temperature and the second evaporator temperature can be determined based on the second freezer compartment temperature and the second evaporator temperature in the second operating information, and the second average temperature difference between the second freezer compartment temperature and the second evaporator temperature can be determined by the following formula 1.

[0088] Formula 1: Second average temperature difference Bc = (1 / m) × ΣΔT j ; where j takes values ​​from 1 to m, and m represents the number of multiple second running information.

[0089] In other embodiments, the second operating information includes second operating information corresponding to each of a plurality of second operating frequencies; in this case, a second average temperature difference corresponding to each second operating frequency can be determined. Optionally, determining the second average temperature difference between the second freezer temperature and the second evaporator temperature based on the plurality of second operating information includes: for each second operating frequency, determining the second average temperature difference corresponding to the second operating frequency based on the plurality of second operating information corresponding to the second operating frequency.

[0090] S103. In response to the second average temperature difference being greater than or equal to the defrost temperature difference threshold, control the refrigerator to start the defrost program; in response to the second average temperature difference being less than the defrost temperature difference threshold, control the refrigerator not to start the defrost program.

[0091] In this embodiment, when the evaporator is operating normally, the temperature difference ΔT between the freezer compartment and the evaporator is relatively stable. As the frost layer on the evaporator increases, the compressor frequency rises, the evaporator temperature decreases, and the temperature difference ΔT between the freezer compartment and the evaporator gradually increases. When the evaporator is severely frosted, the thermal resistance of the frost layer increases, the heat transfer coefficient decreases, and the temperature difference ΔT between the freezer compartment and the evaporator further increases. Therefore, the cooling effect and frosting condition of the evaporator can be determined by the temperature difference ΔT between the freezer compartment and the evaporator.

[0092] The defrosting temperature difference thresholds corresponding to different operating frequencies can be the same or different.

[0093] In some embodiments, the defrosting temperature difference thresholds corresponding to different operating frequencies are different. The defrosting temperature difference thresholds include defrosting temperature difference thresholds corresponding to a plurality of first operating frequencies. Optionally, this step may include: determining whether there is a candidate operating frequency with the same operating frequency among the plurality of first operating frequencies and the plurality of second operating frequencies; if it exists, selecting, according to the quantity of the first operation information respectively corresponding to at least one candidate operating frequency, the operating frequency with the largest quantity of the first operation information from the at least one candidate operating frequency as a target operating frequency; in response to the second average temperature difference corresponding to the target operating frequency being greater than or equal to the defrosting temperature difference threshold corresponding to the target operating frequency, controlling the refrigerator equipment to start a defrosting program, and in response to the second average temperature difference corresponding to the target operating frequency being less than the defrosting temperature difference threshold corresponding to the target operating frequency, controlling the refrigerator equipment not to start the defrosting program.

[0094] For example, as shown in Figure 5 , the second average temperature difference may be denoted as Bc, and the defrosting temperature difference threshold may be denoted as As. If Bc ≥ As, it indicates that the refrigeration effect of the evaporator starts to decline and the evaporator is heavily frosted, and the refrigerator equipment is controlled to start the defrosting program at this time; if Bc < As, it indicates that the refrigeration effect of the evaporator has not changed significantly and the evaporator is not heavily frosted, and the refrigerator equipment is controlled not to start the defrosting program at this time, and step S101 is executed to enter the next cycle.

[0095] It should be noted that if there is no candidate operating frequency with the same operating frequency, the local defrosting mode is switched, wherein the local defrosting mode is used to control whether to start the defrosting program according to the accumulated refrigeration duration of the compressor.

[0096] The defrosting control method for refrigerators disclosed herein includes: collecting multiple first operating information corresponding to a first preset period and multiple second operating information corresponding to a second preset period; the first operating information includes a first freezer compartment temperature and a first evaporator temperature; the second operating information includes a second freezer compartment temperature and a second evaporator temperature; the first preset period includes a first preset number of compressor start-stop cycles after the defrosting program has finished executing; determining a first average temperature difference and an average fluctuating temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the multiple first operating information; determining a defrosting temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference; determining a second average temperature difference between the second freezer compartment temperature and the second evaporator temperature based on the multiple second operating information; controlling the refrigerator to start the defrosting program in response to the second average temperature difference being greater than or equal to the defrosting temperature difference threshold; and controlling the refrigerator not to start the defrosting program in response to the second average temperature difference being less than the defrosting temperature difference threshold. In this embodiment, the cooling effect of the evaporator can be determined based on the average temperature difference between the freezer compartment temperature and the evaporator temperature. Then, based on multiple first operating information within a first preset period, a defrost temperature difference threshold is determined. Based on multiple second operating information within a second preset period, the cooling effect of the evaporator is determined. When the cooling effect of the evaporator begins to decay and reaches the defrost temperature difference threshold, the defrost program is started. This helps to avoid the refrigerator from defrosting too early or too late, thus reducing the energy consumption of the refrigerator while ensuring its cooling effect. Therefore, the user experience of the refrigerator is improved.

[0097] Figure 6 This is a block diagram illustrating a defrosting control device for a refrigerator according to some embodiments of the present disclosure. The defrosting control device for the refrigerator is used to execute a defrosting control method for the refrigerator, as shown below. Figure 6 The device includes:

[0098] The acquisition module 601 is configured to acquire multiple first operating information corresponding to the refrigerator device within a first preset period and multiple second operating information corresponding to the refrigerator device within a second preset period. The first operating information includes the first freezer temperature and the first evaporator temperature, and the second operating information includes the second freezer temperature and the second evaporator temperature. The first preset period includes a first preset number of compressor start-stop cycles after the defrosting program is completed.

[0099] The determining module 602 is configured to determine, based on a plurality of first operating information, a first average temperature difference and an average fluctuating temperature difference between the first freezer compartment temperature and the first evaporator temperature, and to determine a defrost temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference; and to determine, based on a plurality of second operating information, a second average temperature difference between the second freezer compartment temperature and the second evaporator temperature.

[0100] The control module 603 is configured to start the defrosting program in response to a second average temperature difference being greater than or equal to a defrosting temperature difference threshold, and to not start the defrosting program in response to a second average temperature difference being less than the defrosting temperature difference threshold.

[0101] In some embodiments, the first operating information includes first operating information corresponding to a plurality of first operating frequencies; the determining module 602 determines a first average temperature difference and an average fluctuating temperature difference between the first freezer temperature and the first evaporator temperature based on the plurality of first operating information, and determines a defrost temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference, including: for each first operating frequency, determining a first average temperature difference and an average fluctuating temperature difference corresponding to the first operating frequency based on the plurality of first operating information corresponding to the first operating frequency; and determining a defrost temperature difference threshold corresponding to the first operating frequency based on the first average temperature difference and the average fluctuating temperature difference corresponding to the first operating frequency.

[0102] In some embodiments, the second operating information includes second operating information corresponding to each of a plurality of second operating frequencies; the determining module 602 determines a second average temperature difference between the second freezer temperature and the second evaporator temperature based on the plurality of second operating information, including: for each second operating frequency, determining a second average temperature difference corresponding to the second operating frequency based on the plurality of second operating information corresponding to the second operating frequency.

[0103] In some embodiments, the control module 603 controls the refrigerator to start a defrosting program in response to an average temperature difference greater than or equal to a defrosting temperature difference threshold, including: determining whether there are candidate operating frequencies with the same operating frequency among a plurality of first operating frequencies and a plurality of second operating frequencies; if so, selecting the operating frequency with the largest number of first operating information from the at least one candidate operating frequencies as the target operating frequency based on the number of first operating information corresponding to each of the at least one candidate operating frequencies; and controlling the refrigerator to start a defrosting program in response to a second average temperature difference corresponding to the target operating frequency being greater than or equal to the defrosting temperature difference threshold corresponding to the target operating frequency.

[0104] In some embodiments, the control module 603 is further configured to switch to a local defrost mode if the local defrost mode does not exist, the local defrost mode being used to control whether to start the defrost program based on the cumulative cooling time of the compressor.

[0105] In some embodiments, the first operating information further includes the ambient temperature of the refrigerator device; the determining module 602 is configured to: acquire the maximum and minimum ambient temperatures among a plurality of first operating information; determine the ambient temperature difference between the maximum and minimum ambient temperatures; control the refrigerator device to switch to local defrosting mode in response to an ambient temperature difference greater than a preset temperature difference threshold; and perform the step of determining a first average temperature difference and an average fluctuation temperature difference between the first freezer compartment temperature and the first evaporator temperature based on a plurality of first operating information in response to an ambient temperature difference less than or equal to the preset temperature difference threshold.

[0106] In some embodiments, the second preset period includes a second preset number of compressor start-stop periods following the first preset period.

[0107] In some embodiments, the acquisition module 601 acquires multiple first operating information corresponding to the refrigerator device within a first preset period, including: acquiring one or more of the refrigerator device's door opening / closing status, compressor status, and refrigerator compartment damper status; determining the effective acquisition time period of the first preset period based on one or more of the door opening / closing status, compressor status, and refrigerator compartment damper status; and acquiring multiple first operating information corresponding to the refrigerator device within the effective acquisition time period.

[0108] In some embodiments, the acquisition module 601 determines the effective acquisition time period of the first preset period based on the door opening / closing state, including: determining the acquisition time period of the closed state as the effective acquisition time period in response to the door opening / closing state being closed; determining the acquisition time period of the open state as the invalid acquisition time period in response to the door opening / closing state switching from closed to open; and determining whether the temperature of the freezer compartment has recovered to the temperature before the door was opened in response to the door opening / closing state, determining the acquisition time period that has not recovered as the invalid acquisition time period, and determining the acquisition time period after recovery as the effective acquisition time period.

[0109] In some embodiments, the acquisition module 601 determines the effective acquisition time period of the first preset cycle based on the compressor status, including: determining the acquisition time period of the shutdown state as an invalid acquisition time period in response to the compressor status being in a shutdown state; determining whether the temperature of the freezer compartment is lower than a preset temperature in response to the compressor status being in a running state; determining the acquisition time period as an invalid acquisition time period in response to the temperature of the freezer compartment being lower than the preset temperature; and determining the acquisition time period as a valid acquisition time period in response to the temperature of the freezer compartment being greater than or equal to the preset temperature.

[0110] In some embodiments, the acquisition module 601 determines the effective acquisition time period of the first preset cycle based on the state of the refrigerator compartment damper, including: determining the acquisition time period in the closed state as the effective acquisition time period in response to the refrigerator compartment damper being in the closed state; determining the acquisition time period in the open state as the invalid acquisition time period in response to the refrigerator compartment damper being in the open state; determining whether the temperature difference between the freezer compartment temperature and the evaporator temperature has recovered to the temperature difference between the freezer compartment temperature and the evaporator temperature before the compressor stopped in response to the refrigerator compartment damper being in the open state; determining the acquisition time period that has not recovered as the invalid acquisition time period; and determining the acquisition time period after recovery as the effective acquisition time period.

[0111] The defrosting control device for refrigerators provided in this disclosure can determine the cooling effect of the evaporator based on the average temperature difference between the freezer compartment temperature and the evaporator temperature. Furthermore, it can determine the defrosting temperature difference threshold based on multiple first operating information within a first preset period and determine the cooling effect of the evaporator based on multiple second operating information within a second preset period. When the cooling effect of the evaporator begins to decline and reaches the defrosting temperature difference threshold, the defrosting program is activated. This helps to avoid the refrigerator from defrosting too early or too late, thereby reducing the energy consumption of the refrigerator while ensuring its cooling effect and improving the user experience of the refrigerator.

[0112] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments of the defrosting control method for refrigerator equipment, and will not be elaborated here.

[0113] Figure 7 This is a block diagram illustrating a refrigerator device according to some embodiments of the present disclosure. (Refer to...) Figure 7 The refrigerator device 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0114] The processing component 702 typically controls the overall operation of the refrigerator device 700, including operations associated with display, telephone calls, data communication, camera operation, and recording. The processing component 702 may include one or more processors 720 to execute instructions to complete all or part of the steps of the defrosting control method for the refrigerator device described above. Furthermore, the processing component 702 may include one or more modules to facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702.

[0115] Memory 704 is configured to store various types of data to support the operation of device 700. Examples of this data include instructions for any application operating on refrigerator device 700 or for the refrigerator device's defrost control methods, contact data, phone book data, messages, pictures, videos, etc. Memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0116] The power supply component 706 provides power to various components of the refrigerator appliance 700. The power supply component 706 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the refrigerator appliance 700.

[0117] Multimedia component 708 includes a screen that provides an output interface between the refrigerator device 700 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 708 includes a front-facing camera and / or a rear-facing camera. When the device 700 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0118] Audio component 710 is configured to output and / or input audio signals. For example, audio component 710 includes a microphone (MIC) configured to receive external audio signals when the refrigerator device 700 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 704 or transmitted via communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

[0119] I / O interface 712 provides an interface between processing component 702 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0120] Sensor assembly 714 includes one or more sensors for providing state assessments of various aspects of the refrigerator device 700. For example, sensor assembly 714 may detect the open / closed state of device 700, the relative positioning of components such as the display and keypad of refrigerator device 700, changes in the position of refrigerator device 700 or a component of refrigerator device 700, the presence or absence of user contact with refrigerator device 700, the orientation or acceleration / deceleration of refrigerator device 700, and temperature changes of refrigerator device 700. Sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 714 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 714 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0121] Communication component 716 is configured to facilitate wired or wireless communication between refrigerator device 700 and other devices. Refrigerator device 700 can access wireless networks based on communication standards such as WiFi, 3G, 4G, 5G, other communication standards, or combinations thereof. In some embodiments of this disclosure, communication component 716 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In some embodiments of this disclosure, communication component 716 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0122] In some embodiments of this disclosure, the refrigerator device 700 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the defrosting control method of the refrigerator device described above.

[0123] In some embodiments of this disclosure, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 704 including instructions, which can be executed by a processor 720 of a refrigerator device 700 to complete the defrosting control method of the refrigerator device. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0124] In some embodiments of this disclosure, a computer program product is also provided, including a computer program that, when executed by a processor 720 of a refrigerator device 700, enables the refrigerator device 700 to implement the defrosting control method of the refrigerator device as described above.

[0125] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0126] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A defrosting control method for a refrigerator, characterized in that, include: Collect multiple first operating information corresponding to the refrigerator device within a first preset period and multiple second operating information corresponding to the second preset period. The first operating information includes the first freezer temperature and the first evaporator temperature. The second operating information includes the second freezer temperature and the second evaporator temperature. The first preset period includes a first preset number of compressor start-stop cycles after the defrosting program is completed. Based on the plurality of first operating information, a first average temperature difference and an average fluctuating temperature difference between the first freezer temperature and the first evaporator temperature are determined, and a defrost temperature difference threshold is determined based on the first average temperature difference and the average fluctuating temperature difference. And based on the plurality of second operating information, a second average temperature difference between the second freezer temperature and the second evaporator temperature is determined; In response to the second average temperature difference being greater than or equal to the defrost temperature difference threshold, the refrigerator is controlled to start the defrost program; in response to the second average temperature difference being less than the defrost temperature difference threshold, the refrigerator is controlled not to start the defrost program.

2. The defrosting control method according to claim 1, characterized in that, The first operating information includes first operating information corresponding to multiple first operating frequencies; the step of determining a first average temperature difference and an average fluctuating temperature difference between the first freezer compartment temperature and the first evaporator temperature based on the multiple first operating information, and determining a defrost temperature difference threshold based on the first average temperature difference and the average fluctuating temperature difference, includes: For each first operating frequency, based on multiple first operating information corresponding to the first operating frequency, determine the first average temperature difference and the average fluctuating temperature difference corresponding to the first operating frequency; Based on the first average temperature difference and average fluctuating temperature difference corresponding to the first operating frequency, the defrosting temperature difference threshold corresponding to the first operating frequency is determined.

3. The defrosting control method according to claim 2, characterized in that, The second operating information includes second operating information corresponding to multiple second operating frequencies; determining the second average temperature difference between the second freezer temperature and the second evaporator temperature based on the multiple second operating information includes: For each second operating frequency, a second average temperature difference corresponding to the second operating frequency is determined based on multiple second operating information corresponding to the second operating frequency.

4. The defrosting control method according to claim 3, characterized in that, The step of controlling the refrigerator to start the defrost procedure in response to the second average temperature difference being greater than or equal to the defrost temperature difference threshold includes: Determine whether there is a candidate operating frequency that has the same operating frequency among the plurality of first operating frequencies and the plurality of second operating frequencies; If it exists, then based on the number of first operating information corresponding to each of the at least one candidate operating frequencies, the operating frequency with the largest number of first operating information is selected as the target operating frequency from the at least one candidate operating frequencies; In response to the second average temperature difference corresponding to the target operating frequency being greater than or equal to the defrost temperature difference threshold corresponding to the target operating frequency, the refrigerator is controlled to start the defrost program.

5. The defrosting control method according to claim 4, characterized in that, Also includes: If not, switch to local defrost mode, which controls whether to start the defrost program based on the compressor's cumulative cooling time.

6. The defrosting control method according to claim 5, characterized in that, The first operating information also includes the ambient temperature of the refrigerator; before determining the first average temperature difference and average temperature fluctuation difference between the first freezer compartment temperature and the first evaporator temperature based on the plurality of first operating information, the method further includes: Obtain the maximum and minimum ambient temperatures from the plurality of first operating information; Determine the ambient temperature difference between the maximum ambient temperature and the minimum ambient temperature; In response to the ambient temperature difference being greater than a preset temperature difference threshold, the refrigerator is controlled to switch to local defrost mode. In response to the ambient temperature difference being less than or equal to the preset temperature difference threshold, the step of determining the first average temperature difference and average fluctuation temperature difference between the first freezer temperature and the first evaporator temperature based on the plurality of first operating information is executed.

7. The defrosting control method according to claim 5, characterized in that, The second preset cycle includes a second preset number of compressor start-stop cycles following the first preset cycle.

8. The defrosting control method according to claim 1, characterized in that, The refrigerator data acquisition device collects multiple first operating information corresponding to a first preset period, including: Acquire one or more of the following: the door open / close status, compressor status, and refrigerator compartment damper status of the refrigerator device; The effective data collection time period of the first preset cycle is determined based on one or more of the door opening / closing status, compressor status, and refrigerator compartment damper status. Collect multiple first operating information corresponding to the refrigerator device within the effective collection time period.

9. The defrosting control method according to claim 8, characterized in that, Based on the door opening / closing status, the effective data collection time period for the first preset period is determined, including: In response to the door being closed, the time period for collecting data on the closed state is determined as the valid time period for data collection. In response to the door opening / closing state switching from closed to open, the time period for collecting data in the open state is determined to be an invalid time period. In response to the door switching from open to closed state, determine whether the temperature of the freezer compartment has recovered to the temperature before the door was opened, determine the sampling time period that has not recovered as an invalid sampling time period, and determine the sampling time period after recovery as a valid sampling time period.

10. The defrosting control method according to claim 8, characterized in that, Based on the compressor status, the effective data collection time period for the first preset period is determined, including: In response to the compressor being in a stopped state, the time period for collecting data during the stopped state is determined to be an invalid data collection time period; In response to the compressor being in an operating state, determine whether the temperature of the freezer compartment is lower than a preset temperature; If the temperature of the freezer compartment is lower than the preset temperature, the data collection period is determined to be an invalid data collection period; if the temperature of the freezer compartment is greater than or equal to the preset temperature, the data collection period is determined to be a valid data collection period.

11. The defrosting control method according to claim 8, characterized in that, Based on the status of the refrigerator compartment air damper, the effective data collection time period of the first preset cycle is determined, including: In response to the refrigerator compartment damper being in a closed state, the time period for collecting data during the closed state is determined as the valid data collection time period; In response to the refrigerator compartment damper switching from closed to open, the data collection period during the open state is determined to be an invalid data collection period. In response to the refrigerator compartment damper switching from open to closed, determine whether the temperature difference between the first freezer compartment temperature and the first evaporator temperature has recovered to the temperature difference between the first freezer compartment temperature and the first evaporator temperature before the compressor stopped. Determine that the unrecovered sampling period is an invalid sampling period, and determine that the recovered sampling period is a valid sampling period.

12. A defrosting control device for a refrigerator, characterized in that, The defrosting control device of the refrigerator is used to perform the defrosting control method of the refrigerator as described in any one of claims 1 to 11.

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