Defrosting control method, refrigerator, electronic device, and readable storage medium

Abstract

The present application relates to the technical field of refrigeration equipment, and provides a defrosting control method, a refrigerator, an electronic device, a readable storage medium and a computer program product, the defrosting control method comprising: obtaining reference temperature data of a set object in the refrigerator in a first running period after defrosting is completed; obtaining actual temperature data of the set object in the refrigerator in a second running period after the first running period, and obtaining an adjusted temperature value of an evaporator when the evaporator exchanges heat with return air in a refrigeration compartment in a shutdown period of an on-off cycle in the second running period; determining that the reference temperature data, the adjusted temperature value and the actual temperature data satisfy a set condition, and controlling defrosting. The present application can control the refrigerator to defrost on demand, reduce defrosting energy consumption in actual operation, increase the interval of existing defrosting during a non-opening period, reduce the defrosting frequency, and thus further reduce defrosting energy consumption. After the defrosting frequency is reduced, the problem of temperature rise in a freezing compartment of the refrigerator caused by frequent defrosting can be reduced, which is beneficial to the preservation of stored goods in the refrigerator.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and more particularly to defrosting control methods, refrigerators, electronic devices, readable storage media, and computer program products. Background Technology

[0002] After a period of operation, frost will form on the surface of the evaporator in the refrigeration system of a refrigeration equipment. The frost will affect the heat exchange efficiency of the evaporator during refrigeration. Therefore, refrigeration equipment needs to have a defrosting function for the evaporator to ensure normal operation.

[0003] Defrosting control is generally based on a fixed operating time or compressor running time and cumulative door opening / closing time. Defrosting is initiated when these conditions are met. Some refrigeration equipment uses a single operating cycle time longer than a fixed duration; once the condition is triggered and the fixed duration is reached, defrosting begins. However, in actual refrigeration equipment defrosting, the amount of frost on the evaporator may not be very high due to the operating environment and the equipment's own defrosting capacity and frequency. In such cases, frequent defrosting is not the optimal energy-saving option, and it can also cause the freezer compartment temperature to rise to 5–15°C, which is detrimental to food preservation. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a defrosting control method that can control the refrigerator to defrost on demand, reduce defrosting energy consumption during actual operation, increase the interval between defrosting during non-door-opening periods, reduce the frequency of defrosting, and thus further reduce defrosting energy consumption. Reducing the frequency of defrosting can reduce the temperature rise in the refrigerator's freezer compartment caused by frequent defrosting, which is beneficial for preserving the freshness of stored items. By detecting and comprehensively judging the conditions of reference temperature data, actual temperature data, and adjusted temperature values, it is possible to more accurately determine whether frost has formed on the evaporator surface, thereby accurately controlling the opening and closing of the defrosting process.

[0005] The present invention also proposes a refrigerator.

[0006] The present invention also proposes an electronic device.

[0007] The present invention also proposes a non-transitory computer-readable storage medium.

[0008] The present invention also proposes a computer program product.

[0009] The defrosting control method according to a first aspect of the present invention includes:

[0010] The first acquisition step is to acquire the reference temperature data of the set object inside the refrigerator within the first operating cycle after defrosting is completed;

[0011] The second acquisition step involves acquiring the actual temperature data of the set object inside the refrigerator during the second operating cycle after the first operating cycle, and acquiring the evaporator's adjusted temperature value by exchanging heat between the evaporator and the refrigeration return air during the shutdown period of the on / off cycle within the second operating cycle.

[0012] The defrosting process involves determining the reference temperature data, adjusting the temperature value, and ensuring that the actual temperature data meets the set conditions to control defrosting.

[0013] The defrosting control method in this embodiment determines whether the evaporator needs defrosting by detecting the evaporator temperature after normal operation and shutdown, the average temperature of the freezer compartment, and the evaporator temperature after heat exchange between the refrigeration return air and the evaporator. This differs from existing timed defrosting methods, such as those that determine defrosting based on compressor operation or cumulative door opening / closing time. This method controls the refrigerator to defrost on demand, reducing defrosting energy consumption during actual operation, increasing the interval between defrosting during non-door-opening periods, and reducing the frequency of defrosting, thereby further reducing defrosting energy consumption. Reducing the frequency of defrosting reduces the temperature rise in the freezer compartment caused by frequent defrosting, which is beneficial for preserving stored food. By detecting and comprehensively judging reference temperature data, actual temperature data, and adjusted temperature values, it can more accurately determine whether frost has formed on the evaporator surface, thus accurately controlling the opening and closing of the defrosting process.

[0014] According to one embodiment of the present invention, it further includes:

[0015] If the reference temperature data, adjusted temperature data, and actual temperature data do not meet the set conditions, return to the second acquisition step.

[0016] According to one embodiment of the present invention, the reference temperature data includes a reference temperature value and a reference average temperature value;

[0017] The step of obtaining the reference temperature data of the set object inside the refrigerator during the first operating cycle after defrosting includes:

[0018] The temperature value of the evaporator at the time of shutdown in the nth start-stop cycle within the first operating cycle is obtained as the reference temperature value;

[0019] The average temperature value of the freezer compartment during the m-th to n-th start-stop cycles within the first operating cycle is obtained as the benchmark average temperature value;

[0020] The first operating cycle includes n start-stop cycles, where n > 5, m = n - e + 1, and 2 ≤ e ≤ n.

[0021] According to one embodiment of the present invention, the actual temperature data includes actual temperature values ​​and actual average temperature values;

[0022] The step of acquiring the actual temperature data of the set object inside the refrigerator in the second operating cycle after the first operating cycle includes:

[0023] The temperature value of the evaporator during the shutdown period in the i-th start-stop cycle within the second operating cycle is obtained as the actual temperature value.

[0024] The average temperature value of the freezer compartment during the j-th to k-th start-stop cycles within the overall start-stop cycle of the first and second operating cycles is obtained as the actual average temperature value.

[0025] The second operating cycle includes i start-stop cycles, j = n + i - e + 1, k = n + i.

[0026] According to one embodiment of the present invention, the setting conditions include:

[0027] The difference between the reference temperature value and the actual temperature value is greater than the first set temperature;

[0028] The difference between the adjusted temperature value and the reference temperature value is less than the second set temperature;

[0029] The difference between the reference average temperature value and the actual average temperature value is greater than the third set temperature.

[0030] According to one embodiment of the present invention, the first set temperature is 3-5°C, the second set temperature is 10-15°C, and the third set temperature is 0.5-3°C.

[0031] According to one embodiment of the present invention, it further includes:

[0032] After defrosting is complete, return to the first acquisition step.

[0033] According to one embodiment of the present invention, it further includes:

[0034] Once it is determined that the ambient temperature range has changed, return to the step of obtaining the reference temperature data within the first operating cycle after defrosting.

[0035] According to one embodiment of the present invention, the evaporator is provided with at least two temperature sensors, each of which detects and obtains a set of reference temperature data, adjusted temperature value and actual temperature data;

[0036] In the defrosting step, defrosting is controlled based on the reference temperature data obtained by any of the temperature sensors, the adjusted temperature value, and the actual temperature data meeting the set conditions.

[0037] According to one embodiment of the present invention, the step of obtaining the evaporator's set temperature value during the shutdown period of the start-stop cycle in the second operating cycle includes:

[0038] When the machine is shut down, start the fan to blow air onto the evaporator;

[0039] After a preset time, the fan is turned off, and the evaporator's adjusted temperature value is obtained.

[0040] According to a second aspect of the present invention, a refrigerator using the defrosting control method described above includes:

[0041] The cabinet contains a refrigerator compartment and a freezer compartment, with the refrigerator compartment connected to the freezer compartment via an air duct; a first temperature sensor is installed inside the freezer compartment.

[0042] An evaporator is provided in the air duct of the freezer compartment, and the evaporator is equipped with a second temperature sensor.

[0043] A fan is installed inside the air duct of the freezer compartment.

[0044] An electronic device according to a third aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the defrosting control method as described above.

[0045] According to a fourth aspect of the present invention, a non-transitory computer-readable storage medium has a computer program stored thereon that, when executed by a processor, implements the steps of the defrosting control method as described above.

[0046] A computer program product according to a fifth aspect of the present invention includes a computer program that, when executed by a processor, implements the steps of the defrosting control method as described above.

[0047] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0048] An embodiment of the present invention provides a defrosting control method. The refrigerator is powered on and runs until one defrosting cycle is completed, and then continues to run for a period of time, which is the first operating cycle. During the first operating cycle, reference temperature data is acquired and recorded, and then the second operating cycle continues. During the second operating cycle, actual temperature control data of the already completed on-off cycles is acquired and recorded. At the same time, when the refrigerator reaches the shutdown period of the current on-off cycle, the refrigeration return air is introduced into the outside of the evaporator. After the refrigeration return air exchanges heat with the evaporator, the evaporator's adjustment temperature value is acquired and recorded. The actual temperature control data, adjustment temperature value and reference temperature data are compared with preset set conditions. If the set conditions are met, the current on-off cycle is taken as the end of the second operating cycle, and the refrigerator enters the defrosting cycle again.

[0049] After the evaporator has completed one on-off cycle during its second operating cycle of cooling, the low-temperature evaporator exchanges heat with the refrigeration return air. If the evaporator surface is not frosted, the refrigeration return air directly exchanges heat with the evaporator, resulting in sufficient heat exchange and a higher temperature rise in the evaporator. However, if the evaporator surface is frosted, the refrigeration return air exchanges heat with the frost first before exchanging heat with the evaporator, leading to insufficient heat exchange and a lower temperature rise in the evaporator. Therefore, the introduction of refrigeration return air helps defrost the evaporator and also ensures that the evaporator's temperature rise differs from that when the surface is not frosted and the evaporator has undergone heat exchange. Utilizing this difference, the evaporator temperature value measured by the temperature sensor after a period of heat exchange between the refrigeration return air and the evaporator can be used as the adjustment temperature value. This value, along with the reference temperature data and the actual temperature data, serves as the setting condition for the refrigerator's defrosting control.

[0050] The defrosting control method in this embodiment determines whether the evaporator needs defrosting by detecting the evaporator temperature after normal operation and shutdown, the average temperature of the freezer compartment, and the evaporator temperature after heat exchange between the refrigeration return air and the evaporator. This differs from existing timed defrosting methods, such as those that determine defrosting based on compressor operation or cumulative door opening / closing time. This method controls the refrigerator to defrost on demand, reducing defrosting energy consumption during actual operation. It increases the interval between defrosting cycles when the door is not open, reducing the frequency of defrosting and further reducing energy consumption. Reducing the frequency of defrosting also reduces the temperature rise in the freezer compartment caused by frequent defrosting, which is beneficial for preserving stored food. By detecting and comprehensively judging reference temperature data, actual temperature data, and adjusted temperature values, it can more accurately determine whether frost has formed on the evaporator surface, thus accurately controlling the opening and closing of the defrosting process.

[0051] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is one of the flowcharts illustrating the defrosting control method provided in this embodiment of the invention;

[0054] Figure 2 This is a second schematic flowchart of the defrosting control method provided in this embodiment of the invention;

[0055] Figure 3 This is a schematic diagram of the structure of the refrigerator provided in an embodiment of the present invention;

[0056] Figure 4 This is a schematic diagram of the structure of the evaporator of the refrigerator provided in an embodiment of the present invention;

[0057] Figure label:

[0058] 100: Cabinet body; 110: Refrigerated compartment; 120: Freezer compartment; 121: First temperature sensor; 130: Air duct; 131: Air damper;

[0059] 200: Evaporator; 210: Second temperature sensor;

[0060] 300: Fan. Detailed Implementation

[0061] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0062] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0064] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] like Figure 1 and Figure 2 As shown, the defrosting control method provided in this embodiment of the invention includes:

[0067] S01, First acquisition step: Acquire the reference temperature data of the set object inside the refrigerator within the first operating cycle after defrosting is completed;

[0068] S02, the second acquisition step, in the second operating cycle after the first operating cycle, acquire the actual temperature data of the set object inside the refrigerator, and in the shutdown period of the start-stop cycle in the second operating cycle, after introducing refrigerated return air into the evaporator 200, acquire the adjusted temperature value of the evaporator 200.

[0069] S03, Defrosting Step: Determine the reference temperature data, adjust the temperature value, and ensure that the actual temperature data meets the set conditions to control defrosting.

[0070] In the defrosting control method of this invention, the refrigerator is powered on and runs until one defrosting cycle is completed, and then continues to run for a period of time, which is the first operating cycle. During the first operating cycle, the reference temperature data is acquired and recorded, and then the second operating cycle continues. During the second operating cycle, the actual temperature control data of the already completed on-off cycle is acquired and recorded. At the same time, when the refrigerator reaches the shutdown period of the current on-off cycle, the refrigeration return air is introduced into the outside of the evaporator 200. After the refrigeration return air exchanges heat with the evaporator 200, the adjusted temperature value of the evaporator 200 is acquired and recorded. The actual temperature control data, the adjusted temperature value and the reference temperature data are judged under preset conditions. When it is determined that the preset conditions are met, the current on-off cycle is taken as the end of the second operating cycle, and the refrigerator enters the defrosting cycle again.

[0071] When frost forms on the evaporator 200, the heat exchange between the evaporator 200 and the return air of the freezer compartment 120 deteriorates because the frost covers the surface of the evaporator 200. The return air will exchange heat with the frost on the surface of the evaporator 200 first, resulting in poor heat exchange of the refrigerant inside the evaporator 200 pipes. The temperature at the outlet of the evaporator 200 is lower than when it is not frosted. At the same time, because of the presence of frost, the refrigeration fan will run, and the heat exchange between the refrigeration return air and the evaporator 200 will also differ between frosted and non-frosted conditions. In addition, because the heat exchange between the evaporator 200 and the return air of the compartment deteriorates due to frost formation, the temperature of the freezer compartment 120 will rise after frost formation. Based on this, the reference temperature data obtained in this embodiment is selected as the evaporator 200 temperature detected by the temperature sensor during the first operating cycle, and the average temperature of the freezer compartment 120 of the refrigerator detected by the temperature sensor during the first operating cycle. The actual temperature control data obtained can be the evaporator 200 temperature detected by the temperature sensor during the second operating cycle, and the average temperature of the freezer compartment 120 of the refrigerator detected by the temperature sensor during the first and second operating cycles as a whole. The adjusted temperature value obtained can be the evaporator 200 temperature detected by the temperature sensor after each refrigeration return air passes through the evaporator 200 during the second operating cycle.

[0072] After the evaporator 200 has completed one start-stop cycle of cooling operation in the second operating cycle, the low-temperature evaporator 200 exchanges heat with the refrigerated return air. If the surface of the evaporator 200 is not frosted, the refrigerated return air will directly exchange heat with the evaporator 200, resulting in sufficient heat exchange and a higher temperature rise in the evaporator 200. If the surface of the evaporator 200 is already frosted, the refrigerated return air will first exchange heat with the frost and then with the evaporator 200, resulting in insufficient heat exchange and a lower temperature rise in the evaporator 200. Therefore, the introduction of refrigerated return air can help defrost the evaporator 200 and also make the temperature rise of the evaporator 200 different from that when the surface is not frosted and the refrigerated return air exchanges heat with the evaporator 200. Taking advantage of this difference, the temperature value of the evaporator 200 measured by the temperature sensor after the refrigerated return air exchanges heat with the evaporator 200 for a period of time can be used as the adjustment temperature value. This value, together with the reference temperature data and the actual temperature data, serves as the setting condition for the refrigerator defrosting control.

[0073] The defrosting control method in this embodiment determines whether the evaporator 200 needs defrosting by detecting the temperature of the evaporator 200 after normal operation and shutdown, the average temperature of the freezer compartment 120, and the temperature of the evaporator 200 after heat exchange between the refrigeration return air and the evaporator 200. This differs from existing timed defrosting methods, such as those that determine defrosting based on compressor operation or accumulated door opening / closing time. This method controls the refrigerator to defrost on demand, reducing defrosting energy consumption during actual operation, increasing the interval between defrosting cycles during non-door-opening periods, and reducing the frequency of defrosting, thereby further reducing defrosting energy consumption. Reducing the frequency of defrosting reduces the temperature rise in the freezer compartment 120 caused by frequent defrosting, which is beneficial for preserving stored food. By detecting and comprehensively judging the baseline temperature data, actual temperature data, and adjusted temperature values, it is possible to more accurately determine whether frost has formed on the surface of the evaporator 200, thus accurately controlling the opening and closing of the defrosting process.

[0074] In this embodiment, the object to be set inside the refrigerator can be a specific component or area within the refrigerator, such as the evaporator, fan, air duct, refrigerator compartment, freezer compartment, etc., which can be combined and selected according to actual needs. The reference temperature data and the actual temperature data monitor the same object, and obtain corresponding data parameters of the same type.

[0075] According to one embodiment of the present invention, the defrosting control method of the present invention further includes:

[0076] If the reference temperature data, adjusted temperature data, and actual temperature data do not meet the set conditions, return to the second acquisition step.

[0077] In this embodiment, if the reference temperature data, adjusted temperature data, and actual temperature data do not meet the set conditions, the system returns to the second operating cycle following the first operating cycle to obtain the actual temperature data. During the shutdown period of the on / off cycle within the second operating cycle, the evaporator 200 exchanges heat with the refrigerator return air to obtain the adjusted temperature value of the evaporator 200. The actual temperature control data, adjusted temperature value, and reference temperature data are compared under preset set conditions. If it is determined that the set conditions are not met, the system returns to the previous step, i.e., continues operating the second operating cycle. The actual temperature data is obtained in the next on / off cycle following the current on / off cycle that does not meet the set conditions. During the shutdown period of this on / off cycle, the evaporator 200 exchanges heat with the refrigerator return air to obtain the adjusted temperature value of the evaporator 200. Then, the set conditions are determined again, and this cycle is repeated. If the set conditions are met, the refrigerator enters defrosting mode; otherwise, the data monitoring for the next on / off cycle is repeated.

[0078] According to one embodiment of the present invention, the reference temperature data includes a reference temperature value and a reference average temperature value;

[0079] The steps for obtaining the reference temperature data of the set object inside the refrigerator during the first operating cycle after defrosting include:

[0080] The temperature value of evaporator 200 at the time of shutdown in the nth start-stop cycle within the first operating cycle is obtained as the reference temperature value;

[0081] The average temperature value of the freezer compartment 120 during the m-th to n-th start-stop cycles within the first operating cycle is used as the baseline average temperature value.

[0082] The first operating cycle includes n start-stop cycles, where n > 5, m = n - e + 1, and 2 ≤ e ≤ n.

[0083] In this embodiment, the refrigerator is powered on and runs until one defrosting cycle is completed, then continues to run for n on-off cycles, where n > 5, meaning the first operating cycle includes more than 6 on-off cycles. At the shutdown time at the end of the last on-off cycle, the temperature value t0 of the evaporator 200 and the average temperature value T0 of the freezer compartment of the refrigerator during the subsequent a on-off cycles within the first operating cycle are acquired and recorded. t0 and T0 are used as reference temperature data. In this embodiment, n, m, and e are all positive integers.

[0084] When the first operating cycle includes 7 start-stop cycles, i.e. n=7, the temperature value t0 of the evaporator 200 is acquired and recorded at the shutdown time at the end of the 7th start-stop cycle, and the average temperature value T0 of the freezer compartment of the refrigerator from the 3rd to the 7th start-stop cycle in the first operating cycle, i.e. e=5, m=3.

[0085] According to one embodiment of the present invention, the actual temperature data includes the actual temperature value and the actual average temperature value;

[0086] The steps for obtaining the actual temperature data of the set object inside the refrigerator during the second operating cycle following the first operating cycle include:

[0087] The temperature value of evaporator 200 during the shutdown period in the i-th start-stop cycle of the second operating cycle is obtained as the actual temperature value;

[0088] The average temperature value of the freezer compartment 120 during the j-th to k-th start-stop cycles within the overall start-stop cycle of the first and second operating cycles is obtained as the actual average temperature value.

[0089] The second operating cycle includes i start-stop cycles, j = n + i - a + 1, k = n + i.

[0090] In this embodiment, after obtaining the reference temperature parameters, the refrigerator continues to operate and starts the second operating cycle. Each time the second operating cycle completes its i-th start-stop cycle, the evaporator temperature value *ti* at the moment of shutdown at the end of that start-stop cycle, and the average temperature value *Ti* of the refrigerator's freezer compartment over the *a* start-stop cycles preceding the most recently completed start-stop cycle within the second operating cycle, are acquired and recorded. *ti* and *Ti* are used as real-time temperature data. In this embodiment, *j*, *n*, *a*, *k*, and *i* are all positive integers.

[0091] When the first operating cycle includes 7 start-stop cycles, i.e., n=7, and the second operating cycle runs to the second start-stop cycle, i.e., i=2, at the shutdown time at the end of the second start-stop cycle of the second operating cycle, the temperature value t2 of the evaporator 200 is acquired and recorded, as well as the average temperature value T2 of the freezer compartment of the refrigerator from the 5th start-stop cycle in the first operating cycle to the 2nd start-stop cycle in the second operating cycle, i.e., from the 5th to the 9th start-stop cycle of the first and second operating cycles as a whole, i.e., a=5, j=5, k=9.

[0092] According to one embodiment of the present invention, the set conditions include:

[0093] The difference between the reference temperature value and the actual temperature value is greater than the first set temperature;

[0094] The difference between the adjusted temperature value and the reference temperature value is less than the second set temperature;

[0095] The difference between the reference average temperature value and the actual average temperature value is greater than the third set temperature.

[0096] In this embodiment, after acquiring the reference temperature data, adjusting the temperature value, and the actual temperature data, the first set temperature is a, the second set temperature is b, the third set temperature is c, and the adjusted temperature value is t^i. A judgment is made based on the set conditions:

[0097] When the actual temperature value of the evaporator 200 satisfies t0-ti>a, t^i-t0<b, and the actual average temperature of the freezer compartment of the refrigerator satisfies T0-Ti>c, it is determined that defrosting is required at this time, and defrosting is carried out according to the defrosting procedure; if the conditions are not met, operation continues, and the data of the next start-stop cycle is monitored in real time until the defrosting judgment is passed.

[0098] According to one embodiment of the present invention, the first set temperature is 3-5°C, the second set temperature is 10-15°C, and the third set temperature is 0.5-3°C.

[0099] In this embodiment, the first set temperature can be selected as 4℃, the second set temperature can be selected as 12.5℃, and the third set temperature can be selected as 2℃. In other real-time examples, the selection of the set temperature only needs to meet the parameter range requirements.

[0100] According to one embodiment of the present invention, the defrosting control method of the present invention further includes:

[0101] After defrosting is complete, return to the first acquisition step.

[0102] In this embodiment, after defrosting is complete, the process returns to the step of acquiring the reference temperature data during the first operating cycle following defrosting. Once defrosting is complete, i.e., the refrigerator has finished defrosting, the refrigerator continues operating and starts a new first operating cycle, returning to the step of acquiring the reference temperature data during the first operating cycle following defrosting. This cycle repeats the defrosting control method, acquiring the reference temperature data, actual temperature data, and adjusted temperature value to determine whether defrosting requirements are met. By using the end of each defrosting cycle as the starting point for a new first operating cycle, the logic control is more rigorous and scientific, improving the accuracy of the judgment and selection process for defrosting the refrigerator.

[0103] According to one embodiment of the present invention, the defrosting control method of the present invention further includes:

[0104] Once it is determined that the ambient temperature range has changed, return to the step of obtaining the reference temperature data within the first operating cycle after defrosting.

[0105] In this embodiment, when the ambient temperature of the refrigerator changes, such as during the alternation of day and night, or during different seasons (winter and summer), after the refrigerator's sensor detects that the ambient temperature has entered different temperature ranges (e.g., 22-35°C during the day and 10-22°C at night), or a temperature range greater than 22°C and less than or equal to 22°C, the reference temperature data is re-acquired. This reference temperature data will change to some extent due to the influence of the external ambient temperature on the refrigerator's refrigeration system. Then, the refrigerator continues to operate. The actual temperature data and the adjusted temperature value are compared with the new reference temperature data. If the conditions are met, the refrigerator stops and defrosts; otherwise, it continues to operate.

[0106] Therefore, in this embodiment, the refrigerator is equipped with corresponding sensors to detect and determine the ambient temperature range to which it is located. Based on the change in the ambient temperature range, the reference temperature data is re-measured. That is, under different ambient temperature conditions, the frequency of defrosting is adjusted accordingly based on the requirements of different ambient temperature ranges, making the defrosting process more reasonable and the control more flexible, thereby further saving energy.

[0107] According to one embodiment of the present invention, the evaporator 200 is provided with at least two temperature sensors, each of which detects and obtains a set of reference temperature data, adjusted temperature value, and actual temperature data. In this embodiment, to ensure the accuracy and effectiveness of temperature detection of the evaporator 200, temperature sensors are installed at different locations on the evaporator 200, such as the outlet and inlet positions of the evaporator 200, to reduce the deviation and omission of temperature value detection of the evaporator 200.

[0108] In one embodiment, two temperature sensors are provided on the evaporator 200. When obtaining the reference temperature parameter, the temperature values ​​of the evaporator 200 detected by the two temperature sensors are t′0 and t"0, respectively. When obtaining the actual temperature parameter, the temperature values ​​of the evaporator 200 detected by the two temperature sensors are t′i and t"i, respectively. When obtaining the adjusted temperature value, the temperature values ​​of the evaporator 200 detected by the two temperature sensors are t′^i and t"^i, respectively.

[0109] According to one embodiment of the present invention, during the shutdown period of the start-stop cycle in the second operating cycle, the evaporator 200 exchanges heat with the refrigeration return air, and the step of obtaining the regulated temperature value of the evaporator 200 includes:

[0110] When the machine is stopped, start the fan 300 to blow air onto the evaporator 200;

[0111] After a preset time, the fan 300 is turned off, and the evaporator 200's adjusted temperature value is obtained.

[0112] In this embodiment, during the second operating cycle, the refrigeration fan is activated at the shutdown time of each start-stop cycle. The refrigeration fan is controlled to run for a preset time, and then stopped. This means that the refrigerated return air in the refrigeration compartment 110 is blown to the evaporator 200 through the refrigeration fan, where it exchanges heat with the evaporator 200 for a preset time. After this, the refrigeration fan stops, and a temperature sensor on the evaporator 200 detects and obtains the adjusted temperature value. The preset time can be selected according to actual control needs, but is generally selected to be 2 minutes or more.

[0113] like Figure 3 and Figure 4 As shown, the refrigerator provided in this embodiment of the invention, applied to the defrosting control method of the above embodiment, includes:

[0114] The cabinet 100 has a refrigerator compartment 110 and a freezer compartment 120 inside. The refrigerator compartment 110 is connected to the freezer compartment 120 through an air duct 130. The freezer compartment 120 is equipped with a first temperature sensor 121.

[0115] Evaporator 200 is installed in the air duct 130 of the freezer compartment 120, and evaporator 200 is equipped with a second temperature sensor 210;

[0116] Fan 300 is installed in the air duct 130 of the freezer compartment 120.

[0117] The refrigerator of this embodiment can execute the defrosting control method provided in this embodiment. An air duct 130 is provided on the inner wall of the refrigerator compartment 110, and an air duct 130 is also provided on the inner wall of the freezer compartment 120. The two air ducts 130 are connected. A fan 300 and an evaporator 200 are also installed in the air duct 130 of the freezer compartment 120. During the on / off cycle, the fan 300 starts to exchange heat between the air in the freezer compartment 120 and the evaporator 200, thus implementing the refrigerator's cooling operation. A first temperature sensor 121 is also installed in the freezer compartment 120 to obtain the average temperature value of the freezer compartment 120 during the acquisition of reference temperature data and actual temperature data. A second temperature sensor 210 is installed on the evaporator 200 to obtain the temperature value of the evaporator 200 during the acquisition of reference temperature data, temperature adjustment, and actual temperature data. The refrigerator fan blows the refrigerated return air from the refrigerator compartment 110 to the evaporator 200 through the air duct 130 for heat exchange.

[0118] This embodiment of the refrigerator determines whether the evaporator 200 needs defrosting by detecting the evaporator 200 temperature after normal operation and shutdown, the average temperature of the freezer compartment 120, and the evaporator 200 temperature after heat exchange between the refrigeration return air and the evaporator 200. Unlike existing timed defrosting methods, such as those based on compressor operation or accumulated door opening / closing time, this embodiment's defrosting control method allows the refrigerator to defrost on demand, reducing defrosting energy consumption during actual operation. It also increases the interval between defrosting cycles during non-door-opening periods, reducing the frequency of defrosting and further reducing energy consumption. Reducing the frequency of defrosting also reduces the temperature rise in the freezer compartment 120 caused by frequent defrosting, which is beneficial for preserving stored food. By detecting and comprehensively judging reference temperature data, actual temperature data, and adjusted temperature values, it can more accurately determine whether frost has formed on the surface of the evaporator 200, thereby accurately controlling the opening and closing of the defrosting process.

[0119] In this embodiment, a damper 131 is provided in the middle of the air duct 130 to separate the refrigeration compartment 110 and the freezer compartment 120. After the refrigeration fan is started, the refrigeration return air enters unidirectionally through the damper 131 in this air duct 130.

[0120] The electronic device provided in this embodiment of the invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps of the defrosting control method as described in the above embodiment.

[0121] The non-transitory computer-readable storage medium provided in this embodiment of the invention stores a computer program thereon, which, when executed by a processor, implements the steps of the defrosting control method as described in the above embodiment.

[0122] The electronic device of this invention includes a processor, a communication interface, a memory, and a communication bus. The processor, communication interface, and memory communicate with each other via the communication bus. The processor can call logical instructions stored in the memory to execute the defrosting control method described in the above embodiments.

[0123] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0124] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0125] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0126] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A defrosting control method, characterized in that, include: The first acquisition step involves acquiring reference temperature data for a set object inside the refrigerator during the first operating cycle after defrosting. The reference temperature data includes a reference temperature value and a reference average temperature value, including: The temperature value of the evaporator at the time of shutdown in the nth start-stop cycle within the first operating cycle is obtained as the reference temperature value; The average temperature value of the freezer compartment during the m-th to n-th start-stop cycles within the first operating cycle is obtained as the reference average temperature value. The first operating cycle includes n start-stop cycles, where n > 5, m = n - e + 1, and 2 ≤ e ≤ n; The second acquisition step involves acquiring the actual temperature data of the set object inside the refrigerator during the second operating cycle following the first operating cycle. During the off-peak period of the second operating cycle, after the evaporator exchanges heat with the refrigeration return air for a period of time, the evaporator's adjusted temperature value is acquired. The evaporator temperature value measured by the temperature sensor is used as the adjusted temperature value. The actual temperature data includes the actual temperature value and the actual average temperature value, including: The temperature value of the evaporator during the shutdown period in the i-th start-stop cycle within the second operating cycle is obtained as the actual temperature value. The average temperature value of the freezer compartment during the j-th to k-th start-stop cycles within the overall start-stop cycle of the first and second operating cycles is obtained as the actual average temperature value. The second operating cycle includes i start-stop cycles, j=n+i-e+1, k=n+i; The defrosting process involves determining the reference temperature data, adjusting the temperature value, and ensuring that the actual temperature data meets set conditions to control defrosting. These set conditions include: The difference between the reference temperature value and the actual temperature value is greater than the first set temperature; The difference between the adjusted temperature value and the reference temperature value is less than the second set temperature; The difference between the reference average temperature value and the actual average temperature value is greater than the third set temperature.

2. The defrosting control method according to claim 1, characterized in that, Also includes: If the reference temperature data, adjusted temperature value, and actual temperature data do not meet the set conditions, return to the second acquisition step.

3. The defrosting control method according to claim 1, characterized in that, The first set temperature is 3~5℃, the second set temperature is 10~15℃, and the third set temperature is 0.5~3℃.

4. The defrosting control method according to claim 1, characterized in that, Also includes: After defrosting is complete, return to the first acquisition step.

5. The defrosting control method according to claim 1, characterized in that, Also includes: Once it is determined that the ambient temperature range has changed, return to the step of obtaining the reference temperature data within the first operating cycle after defrosting.

6. The defrosting control method according to any one of claims 1 to 5, characterized in that, The evaporator is equipped with at least two temperature sensors, each of which detects and obtains a set of reference temperature data, adjusted temperature value and actual temperature data. In the defrosting step, defrosting is controlled based on the reference temperature data obtained by any of the temperature sensors, the adjusted temperature value, and the actual temperature data meeting the set conditions.

7. The defrosting control method according to claim 6, characterized in that, During the shutdown period of the start-stop cycle in the second operating cycle, the step of obtaining the evaporator's set temperature value through heat exchange between the evaporator and the refrigeration return air includes: When the machine is shut down, start the fan to blow air onto the evaporator; After a preset time, the fan is turned off, and the evaporator's adjusted temperature value is obtained.

8. A refrigerator, characterized in that, The defrosting control method according to any one of claims 1 to 7 includes: The cabinet contains a refrigerator compartment and a freezer compartment, with the refrigerator compartment connected to the freezer compartment via an air duct; a first temperature sensor is installed inside the freezer compartment. An evaporator is provided in the air duct of the freezer compartment, and the evaporator is equipped with a second temperature sensor. A fan is installed inside the air duct of the freezer compartment.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the program, it implements the steps of the defrosting control method as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the defrosting control method as described in any one of claims 1 to 7.

11. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the defrosting control method as described in any one of claims 1 to 7.

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