Defrosting control method and device, refrigeration equipment and storage medium

Abstract

The invention relates to a defrosting control method and device, refrigeration equipment and a storage medium, and the defrosting control method comprises the steps that the accumulated power-on and power-off frequency of the refrigeration equipment, the surface temperature of an evaporator and the accumulated operation duration of a compressor are obtained; whether the current state of the refrigeration equipment meets the defrosting condition or not is determined according to the accumulated power-on and power-off frequency, the surface temperature of the evaporator and the accumulated operation duration of the compressor; and if the current state of the refrigeration equipment meets the defrosting condition, a defrosting device is controlled to start defrosting. According to the embodiment of the invention, the defrosting device is controlled to start defrosting under the condition of determining that the current state of the refrigeration equipment meets the defrosting condition according to the accumulated power-on and power-off times of the refrigeration equipment, the surface temperature of the evaporator and the accumulated running time of the compressor; defrosting can be started when the refrigeration equipment is in the frequent power-on and power-off state and the evaporator meets the frosting condition, and the problem that the refrigerator does not refrigerate due to frequent power-off is prevented.

Description

Technical Field

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

[0002] There are usually two defrosting methods for electronically controlled refrigerators. The first method is to defrost based on the cumulative running time of the compressor. When the cumulative running time of the compressor reaches the defrosting requirement, defrosting is performed. Since the cumulative running time of the compressor is generally memorized once every 1 hour, when the refrigerator is powered off and then powered on again after a period of normal operation, the refrigerator still memorizes it in this way. At this time, for areas with frequent power outages (such as power outages every 30 minutes / 40 minutes), the refrigerator cannot accurately memorize the cumulative running time of the compressor, resulting in the actual running time of the compressor far exceeding the memorized cumulative running time of the compressor. At this time, there will be a large amount of frost on the evaporator. If the power is repeatedly turned on and off several times, the refrigerator will not meet the conditions for entering defrosting, which will cause the frost on the refrigerator evaporator to freeze into solid ice, resulting in the refrigerator not cooling.

[0003] The second type of refrigerator determines the temperature of the freezer defrost sensor every time it is powered on. When the temperature of the freezer defrost sensor is lower than H°C (such as lower than -10°C), the refrigerator immediately enters defrosting and defrosts according to normal defrosting. Under this method, if the refrigerator is frequently powered on and off, the refrigerator evaporator will not freeze and cause the refrigerator to fail to refrigerate. This method can prevent the evaporator from freezing in areas with frequent power outages and power-ons, but if the power outage is too frequent (such as once every 30 minutes / 40 minutes), the temperature of the freezer defrost sensor may be lower than H°C after powering on. Continuous defrosting will cause the refrigerator to have almost no time to refrigerate, affecting the refrigerator's refrigeration capacity.

[0004] Currently, these two defrosting methods will affect the refrigeration capacity of the refrigerator in areas with frequent power outages. Summary of the invention

[0005] In order to solve the technical problem that a refrigerator fails to refrigerate due to frequent power outages, the present application provides a defrost control method, device, refrigeration equipment and storage medium.

[0006] In a first aspect, the present application provides a defrost control method, comprising:

[0007] Obtain the cumulative number of power on and off times of the refrigeration equipment, the evaporator surface temperature and the cumulative running time of the compressor;

[0008] Determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor;

[0009] If the current state of the refrigeration equipment meets the defrosting condition, the defrosting device is controlled to start defrosting.

[0010] Optionally, determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor includes:

[0011] Determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times;

[0012] If the refrigeration equipment is in a state of frequent power outages, determining whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator;

[0013] If the temperature of the evaporator meets the preset frosting condition, determining whether the accumulated running time reaches a preset first time threshold;

[0014] If the accumulated operating time is greater than or equal to a preset first time threshold, it is determined that the current state of the refrigeration equipment meets the defrosting condition.

[0015] Optionally, determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor further includes:

[0016] If the accumulated running time is less than the preset first time threshold, continue to accumulate the accumulated running time;

[0017] Until the accumulated running time is greater than or equal to the preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to the preset second time threshold, the defrost device is controlled to start defrosting.

[0018] Optionally, determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor further includes:

[0019] If the temperature of the evaporator does not meet the preset frosting condition, the accumulated running time is reset to zero;

[0020] Continue to accumulate the accumulated running time;

[0021] Until the accumulated running time is greater than or equal to the preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to the preset second time threshold, the defrost device is controlled to start defrosting.

[0022] Optionally, determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor further includes:

[0023] If the refrigeration equipment is not in a frequent power-off state, continue to accumulate the accumulated power-on and power-off times;

[0024] The step of determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times is re-executed.

[0025] Optionally, determining whether the refrigeration device is in a frequent power-off state according to the accumulated number of power-on and power-off times includes:

[0026] Determine whether the accumulated number of power on and off times is greater than or equal to a preset number threshold;

[0027] If the accumulated number of power on and off times is greater than or equal to a preset number threshold, it is determined that the refrigeration device is in a frequent power off state.

[0028] Optionally, determining whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator includes:

[0029] Determining whether the evaporator surface temperature is less than a preset second temperature threshold;

[0030] If the surface temperature of the evaporator is lower than a preset second temperature threshold, it is determined that the temperature of the evaporator satisfies a preset frosting condition.

[0031] In a second aspect, the present application provides a defrost control device, comprising:

[0032] An acquisition module is used to obtain the cumulative number of power on and off times of the refrigeration equipment, the surface temperature of the evaporator and the cumulative running time of the compressor;

[0033] A determination module, used to determine whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor;

[0034] The control module is used to control the defrost device to start defrosting if the current state of the refrigeration equipment meets the defrosting conditions.

[0035] Optionally, the determining module includes:

[0036] A first determining unit, configured to determine whether the refrigeration device is in a frequent power-off state according to the accumulated number of power-on and power-off times;

[0037] A second determination unit is used to determine whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator if the refrigeration equipment is in a state of frequent power outages;

[0038] a third determining unit, configured to determine whether the accumulated operating time reaches a preset first time threshold if the temperature of the evaporator satisfies a preset frosting condition;

[0039] The fourth determining unit is used to determine that the current state of the refrigeration equipment meets the defrosting condition if the accumulated operating time is greater than or equal to a preset first time threshold.

[0040] Optionally, the determining module further includes:

[0041] A first accumulating unit, configured to continue accumulating the accumulated running time if the accumulated running time is less than a preset first time threshold;

[0042] The first control unit is used to control the defrost device to start defrosting until the accumulated operating time is greater than or equal to a preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to a preset second time threshold.

[0043] Optionally, the determining module further includes:

[0044] A reset unit, used for resetting the accumulated running time to zero if the temperature of the evaporator does not meet the preset frosting condition;

[0045] A second accumulating unit, used to continue accumulating the accumulated running time;

[0046] The second control unit is used to control the defrost device to start defrosting until the accumulated operating time is greater than or equal to a preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to a preset second time threshold.

[0047] Optionally, the determining module further includes:

[0048] A third accumulating unit, for continuing to accumulate the accumulated number of power on and off times if the refrigeration equipment is not in a frequent power off state;

[0049] A re-execution unit is used to re-execute the step of determining whether the refrigeration equipment is in a frequent power-off state based on the accumulated number of power-on and power-off times.

[0050] Optionally, the first determining unit includes:

[0051] A first determination subunit, used to determine whether the accumulated number of power on and off times is greater than or equal to a preset number threshold;

[0052] The second determining subunit is configured to determine that the refrigeration device is in a frequent power off state if the accumulated number of power on and off times is greater than or equal to a preset number threshold.

[0053] Optionally, the second determining unit includes:

[0054] A third determination subunit, used to determine whether the surface temperature of the evaporator is less than a preset second temperature threshold;

[0055] The fourth determining subunit is used to determine whether the temperature of the evaporator meets a preset frosting condition if the surface temperature of the evaporator is lower than a preset second temperature threshold.

[0056] In a third aspect, the present application provides a refrigeration device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0057] Memory, used to store computer programs;

[0058] The processor is used to implement any defrost control method described in the first aspect when executing the program stored in the memory.

[0059] In a fourth aspect, the present application provides a computer-readable storage medium, on which a program of a defrost control method is stored. When the program of the defrost control method is executed by a processor, the steps of any of the defrost control methods described in the first aspect are implemented.

[0060] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0061] The embodiment of the present application controls the defrost device to start defrosting by determining that the current state of the refrigeration equipment meets the defrosting conditions based on the cumulative number of power on and off times of the refrigeration equipment, the surface temperature of the evaporator and the cumulative running time of the compressor. This can start defrosting when the refrigeration equipment is in a state of frequent power on and off and the evaporator meets the frosting conditions, thereby preventing the refrigerator from failing to refrigerate due to frequent power offs. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0063] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0064] Figure 1 A flow chart of a defrost control method provided in an embodiment of the present application;

[0065] Figure 2 A flowchart of a defrost control method in practical application provided by an embodiment of the present application;

[0066] Figure 3 A system structure diagram provided for an embodiment of the present application;

[0067] Figure 4 A structural diagram of a defrost control device provided in an embodiment of the present application;

[0068] Figure 5 A structural diagram of a refrigeration device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0070] Since the current defrosting method will affect the refrigeration capacity of the refrigerator in areas with frequent power outages, the embodiments of the present application provide a defrosting control method, device, refrigeration equipment and storage medium.

[0071] The present application provides a defrost control method, which can be applied to direct cooling refrigeration equipment, such as direct cooling refrigerators, direct cooling freezers, refrigeration room ice making equipment, etc. Figure 1 As shown, the defrost control method may include:

[0072] Step S101, obtaining the cumulative number of power on and off times of the refrigeration equipment, the surface temperature of the evaporator and the cumulative running time of the compressor;

[0073] In the embodiment of the present application, each time the refrigeration device is powered on, the cumulative on-off times of the cumulative on-off counter can be increased by one, and a defrost sensor (such as a defrost sensor) can be set on the surface of the evaporator body. Figure 3 ) detects the surface temperature of the evaporator body and outputs the evaporator surface temperature. The compressor accumulated time is the accumulated running time of the compressor obtained by the compressor running timer. The accumulation stops every time the compressor is turned off and continues after the compressor is started until the accumulated running time is cleared.

[0074] Step S102, determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor;

[0075] In this step, it can be determined whether the cumulative number of power on and off times, the evaporator surface temperature and the cumulative running time of the compressor meet the corresponding conditions. If they all meet the conditions, it is determined whether the current state of the refrigeration equipment meets the defrosting conditions.

[0076] The cumulative number of power on and off times, the surface temperature of the evaporator and the cumulative operating time of the compressor can also be multiplied by the corresponding weights, and the final score value can be compared with the preset score threshold. If it is greater than the preset score threshold, it is determined whether the current state of the refrigeration equipment meets the defrosting conditions. In actual applications, other methods can also be used, which are not limited in this scheme.

[0077] Step S103: If the current state of the refrigeration equipment meets the defrosting condition, control the defrosting device to start defrosting.

[0078] In the embodiment of the present application, the defrost device includes a defrost heater. After the defrost heater is started, the surface of the evaporator can be defrosted.

[0079] The embodiment of the present application controls the defrost device to start defrosting by determining that the current state of the refrigeration equipment meets the defrosting conditions based on the cumulative number of power on and off times of the refrigeration equipment, the surface temperature of the evaporator and the cumulative running time of the compressor. This can start defrosting when the refrigeration equipment is in a state of frequent power on and off and the evaporator meets the frosting conditions, thereby preventing the refrigerator from failing to refrigerate due to frequent power offs.

[0080] In another embodiment of the present application, step S102 determines whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the evaporator surface temperature, and the accumulated running time of the compressor, including:

[0081] Step S201, determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times;

[0082] In this step, it can be determined whether the cumulative number of power on and off times is greater than or equal to a preset number threshold; if the cumulative number of power on and off times is greater than or equal to the preset number threshold, it is determined that the refrigeration equipment is in a frequent power off state, where, by way of example, the preset number threshold can be 4, 10 or 20, etc.

[0083] Step S202, if the refrigeration equipment is in a state of frequent power outages, determining whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator;

[0084] In this step, it can be determined whether the evaporator surface temperature is lower than the preset second temperature threshold; if the evaporator surface temperature is lower than the preset second temperature threshold, it is determined that the temperature of the evaporator meets the preset frosting condition. Exemplarily, the preset second temperature threshold can be 4°C, 1°C or 0°C, etc.

[0085] Step S203, if the temperature of the evaporator meets the preset frosting condition, determining whether the accumulated operating time reaches a preset first time threshold;

[0086] Exemplarily, the preset first duration threshold may be 5 hours, 10 hours, 12 hours, and so on.

[0087] Step S204: if the accumulated operating time is greater than or equal to a preset first time threshold, it is determined that the current state of the refrigeration equipment meets the defrosting condition.

[0088] The embodiment of the present application determines whether the cumulative number of power on and off times, the surface temperature of the evaporator and the cumulative operating time of the compressor meet the corresponding conditions, so as to determine whether the current state of the refrigeration equipment meets the defrost conditions. Furthermore, when the current state of the refrigeration equipment meets the defrost conditions, the defrost device is controlled to start defrosting. The defrost can be started when the refrigeration equipment is in a state of frequent power on and off and the evaporator meets the frosting conditions, thereby preventing the refrigerator from failing to refrigerate due to frequent power offs.

[0089] In another embodiment of the present application, step S102 determines whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the evaporator surface temperature and the accumulated running time of the compressor, and further includes:

[0090] Step S301, if the accumulated running time is less than the preset first time threshold, continue to accumulate the accumulated running time;

[0091] Step S302, until the accumulated running time is greater than or equal to the preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time when the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to the preset second time threshold, control the defrost device to start defrosting.

[0092] Exemplarily, the preset first temperature threshold may be -33°C, -30°C or -35°C, etc., and the preset second time threshold may be.

[0093] When the cumulative running time of the compressor after the refrigeration equipment is powered on is less than the preset first time threshold, but there is no power failure for a long time, the defrosting condition in the previous embodiment cannot be triggered, and frost blocking may still occur. To avoid this problem, when the cumulative running time of the compressor is greater than or equal to the preset first time threshold, the refrigerator compartment temperature and the evaporator temperature can be collected by the controller, and the refrigerator compartment temperature is used to confirm whether the freezer compartment is in a refrigeration state. The evaporator frost amount is determined by the evaporator temperature (when the frost amount is large, the temperature will be lower than the normal value, that is, the preset first temperature threshold). When the freezer compartment is in a refrigeration state and the evaporator surface temperature is less than or equal to the preset first temperature threshold, it is determined whether the refrigerator is defrosting. In this way, it is ensured that the refrigeration time is met, and the compartment will not be refrigerated due to frequent defrosting due to short refrigeration time, and the frost blocking problem caused by the long frost time of the evaporator due to frequent power failures can be determined and eliminated.

[0094] In another embodiment of the present application, step S102 determines whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the evaporator surface temperature and the accumulated running time of the compressor, and further includes:

[0095] Step S401, if the temperature of the evaporator does not meet the preset frosting condition, the accumulated running time is cleared;

[0096] Step S402, continue to accumulate the accumulated running time;

[0097] Step S403, until the accumulated running time is greater than or equal to the preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time when the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to the preset second time threshold, control the defrost device to start defrosting.

[0098] The embodiments of the present application can prevent the unstable power outage phenomenon, and avoid the problem that the refrigerator starts to frost after frequent power on and off in the early stage, and then there is no power outage for a long time, which causes frost blockage in the evaporator, but the frequent power off defrosting program cannot be entered because the power has not been cut off for a long time.

[0099] In another embodiment of the present application, step S102 determines whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the evaporator surface temperature and the accumulated running time of the compressor, and further includes:

[0100] If the refrigeration equipment is not in a frequent power-off state, continue to accumulate the accumulated power-on and power-off times;

[0101] The step of determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times is re-executed.

[0102] In the embodiment of the present application, since the frequent power outage state is a special program, the number of power outages needs to be accumulated to enter this program. Under normal circumstances, the refrigerator is not in a frequent power outage state. It must meet the conditions before entering. If not met, the judgment will continue.

[0103] For ease of understanding, Figure 2 and Figure 3 As shown, the present application also provides an embodiment in practical application, as follows:

[0104] 1. The refrigerator has a preset power-on counter, which includes the cumulative power-on time and the cumulative running time of the compressor. The cumulative power-on time and the cumulative running time of the compressor are memorized once every hour. The cumulative power-on time after each power failure is not memorized, but the cumulative running time of the compressor is memorized.

[0105] 2. When the refrigerator is powered on, the power-on counter increases by 1. Figure 3 When the cumulative running time of the refrigerator measured by the power-on timer reaches 24 hours, the power-on counter is reset. If the power-on counter reaches the preset number of times, it is determined that the refrigerator is in a frequent power-off state.

[0106] 3. After the refrigerator is powered on, the evaporator surface temperature TH is collected. When TH ≥ 4°C, the accumulated compressor running time before power failure is reset to zero. When TH < 4°C, the compressor running time continues to be accumulated.

[0107] 4. When the refrigerator is frequently powered off, after the power is turned off and on again, the collected evaporator surface temperature TH is less than 4°C, and the cumulative running time of the compressor reaches the preset time Tx (the preset time is generally set at 10 to 12 hours according to the size of the evaporator), then defrost (start) immediately. Figure 3 After defrosting is completed, the accumulated running time of the compressor is reset to zero, the frequent power-off state is exited, and the power-on counter is reset to zero.

[0108] 5. When the refrigerator is frequently powered off and the cumulative running time of the compressor has not reached the preset time Tx, if there is no power outage in the future, the refrigerator may still freeze due to the large amount of frost in the early stage, causing the frost on the refrigerator evaporator to turn into solid ice, making the refrigerator unable to cool. To avoid this situation, when the refrigerator is frequently powered off and the cumulative running time of the compressor is greater than or equal to the preset time Tx, it is detected that the refrigerator is in the cooling state in the freezer (according to Figure 3The freezing sensor in the freezer is used to collect the actual temperature of the freezer. When the temperature of the freezer reaches the preset temperature, refrigeration is required) and the evaporator surface temperature TH≤-33℃ is maintained for 30 minutes, defrosting is performed immediately. After defrosting is completed, the accumulated running time of the compressor is reset, and the power-on counter is reset when the frequent power-off state is exited.

[0109] 6. This can not only ensure that the refrigeration time is met and the compartment will not be refrigerated due to frequent defrosting due to short refrigeration time, but also judge and eliminate the frost blockage problem caused by long frost time of the evaporator due to frequent power outages.

[0110] In another embodiment of the present application, a defrost control device is also provided, such as Figure 4 As shown, including:

[0111] The acquisition module 11 is used to obtain the cumulative number of power on and off times of the refrigeration equipment, the surface temperature of the evaporator and the cumulative running time of the compressor;

[0112] A determination module 12, configured to determine whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor;

[0113] The control module 13 is used to control the defrost device to start defrosting if the current state of the refrigeration equipment meets the defrosting condition.

[0114] Optionally, the determining module includes:

[0115] A first determining unit, configured to determine whether the refrigeration device is in a frequent power-off state according to the accumulated number of power-on and power-off times;

[0116] A second determination unit is used to determine whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator if the refrigeration equipment is in a state of frequent power outages;

[0117] a third determining unit, configured to determine whether the accumulated operating time reaches a preset first time threshold if the temperature of the evaporator satisfies a preset frosting condition;

[0118] The fourth determining unit is used to determine that the current state of the refrigeration equipment meets the defrosting condition if the accumulated operating time is greater than or equal to a preset first time threshold.

[0119] Optionally, the determining module further includes:

[0120] A first accumulating unit, configured to continue accumulating the accumulated running time if the accumulated running time is less than a preset first time threshold;

[0121] The first control unit is used to control the defrost device to start defrosting until the accumulated operating time is greater than or equal to a preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to a preset second time threshold.

[0122] Optionally, the determining module further includes:

[0123] A reset unit, used for resetting the accumulated running time to zero if the temperature of the evaporator does not meet the preset frosting condition;

[0124] A second accumulating unit, used to continue accumulating the accumulated running time;

[0125] The second control unit is used to control the defrost device to start defrosting until the accumulated operating time is greater than or equal to a preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to a preset second time threshold.

[0126] Optionally, the determining module further includes:

[0127] A third accumulating unit, for continuing to accumulate the accumulated number of power on and off times if the refrigeration equipment is not in a frequent power off state;

[0128] A re-execution unit is used to re-execute the step of determining whether the refrigeration equipment is in a frequent power-off state based on the accumulated number of power-on and power-off times.

[0129] Optionally, the first determining unit includes:

[0130] A first determination subunit, used to determine whether the accumulated number of power on and off times is greater than or equal to a preset number threshold;

[0131] The second determining subunit is configured to determine that the refrigeration device is in a frequent power off state if the accumulated number of power on and off times is greater than or equal to a preset number threshold.

[0132] Optionally, the second determining unit includes:

[0133] A third determination subunit, used to determine whether the surface temperature of the evaporator is less than a preset second temperature threshold;

[0134] The fourth determining subunit is used to determine whether the temperature of the evaporator meets a preset frosting condition if the surface temperature of the evaporator is lower than a preset second temperature threshold.

[0135] In another embodiment of the present application, a refrigeration device is provided, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0136] Memory, used to store computer programs;

[0137] The processor is used to implement the defrost control method described in any of the above method embodiments when executing the program stored in the memory.

[0138] In the refrigeration device provided by the embodiment of the present invention, the processor controls the defrost device to start defrosting when it determines that the current state of the refrigeration device meets the defrosting conditions based on the cumulative number of power on and off times of the refrigeration device, the surface temperature of the evaporator and the cumulative running time of the compressor by executing the program stored in the memory. The defrosting can be started when the refrigeration device is in a state of frequent power on and off and the evaporator meets the frosting conditions, thereby preventing the refrigerator from failing to refrigerate due to frequent power offs.

[0139] The communication bus 1140 mentioned in the above refrigeration equipment can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus 1140 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0140] The communication interface 1120 is used for communication between the above refrigeration device and other devices.

[0141] The memory 1130 may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0142] The above-mentioned processor 1110 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0143] In another embodiment of the present application, a computer-readable storage medium is further provided, on which a program of the defrost control method is stored. When the program of the defrost control method is executed by a processor, the steps of the defrost control method described in any of the aforementioned method embodiments are implemented.

[0144] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0145] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A defrost control method, characterized in that: include: Obtain the cumulative number of power on and off times of the refrigeration equipment, the evaporator surface temperature and the cumulative running time of the compressor; Determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor; If the current state of the refrigeration equipment meets the defrosting condition, the defrosting device is controlled to start defrosting.

2. The defrost control method according to claim 1, characterized in that: Determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator, and the accumulated running time of the compressor includes: Determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times; If the refrigeration equipment is in a state of frequent power outages, determining whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator; If the temperature of the evaporator meets the preset frosting condition, determining whether the accumulated running time reaches a preset first time threshold; If the accumulated operating time is greater than or equal to a preset first time threshold, it is determined that the current state of the refrigeration equipment meets the defrosting condition.

3. The defrost control method according to claim 2, characterized in that: Determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor, further comprising: If the accumulated running time is less than the preset first time threshold, continue to accumulate the accumulated running time; Until the accumulated running time is greater than or equal to the preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to the preset second time threshold, the defrost device is controlled to start defrosting.

4. The defrost control method according to claim 2, characterized in that: Determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor, further comprising: If the temperature of the evaporator does not meet the preset frosting condition, the accumulated running time is reset to zero; Continue to accumulate the accumulated running time; Until the accumulated running time is greater than or equal to the preset first time threshold, the freezer compartment is in a refrigeration state, the evaporator surface temperature is less than or equal to the preset first temperature threshold, and the time during which the evaporator surface temperature is less than or equal to the preset first temperature threshold is greater than or equal to the preset second time threshold, the defrost device is controlled to start defrosting.

5. The defrost control method according to claim 2, characterized in that: Determining whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor, further comprising: If the refrigeration equipment is not in a frequent power-off state, continue to accumulate the accumulated power-on and power-off times; The step of determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times is re-executed.

6. The defrost control method according to claim 2, characterized in that: Determining whether the refrigeration equipment is in a frequent power-off state according to the accumulated number of power-on and power-off times includes: Determine whether the accumulated number of power on and off times is greater than or equal to a preset number threshold; If the accumulated number of power on and off times is greater than or equal to a preset number threshold, it is determined that the refrigeration device is in a frequent power off state.

7. The defrost control method according to claim 2, characterized in that: Determining whether the temperature of the evaporator meets a preset frosting condition according to the surface temperature of the evaporator includes: Determining whether the evaporator surface temperature is less than a preset second temperature threshold; If the surface temperature of the evaporator is lower than a preset second temperature threshold, it is determined that the temperature of the evaporator satisfies a preset frosting condition.

8. A defrost control device, characterized in that: include: An acquisition module is used to obtain the cumulative number of power on and off times of the refrigeration equipment, the surface temperature of the evaporator and the cumulative running time of the compressor; A determination module, used to determine whether the current state of the refrigeration equipment meets the defrosting condition according to the accumulated number of power on and off times, the surface temperature of the evaporator and the accumulated running time of the compressor; The control module is used to control the defrost device to start defrosting if the current state of the refrigeration equipment meets the defrosting conditions.

9. A refrigeration device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; The processor is used to implement the defrost control method described in any one of claims 1 to 7 when executing the program stored in the memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program of the defrost control method, and when the program of the defrost control method is executed by the processor, the steps of the defrost control method described in any one of claims 1 to 7 are implemented.

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