Defrosting control method, defrosting control system, defrosting control device and refrigeration equipment

Abstract

The invention provides a defrosting control method, a defrosting control system, a defrosting control device and refrigeration equipment. The method comprises the following steps: detecting whether the refrigeration equipment meets a defrosting condition or not; when it is detected that the refrigeration equipment meets the defrosting condition, the accumulated operation duration of a compressor at the current moment is obtained, and the first temperature, detected by a temperature detection module, of an evaporator at the current moment is obtained; and if the accumulated operation duration is larger than or equal to the first preset duration and the first temperature is smaller than the first preset temperature, the driving module is controlled to send a first heating instruction to the heater, so that the heater heats the surface of the evaporator. According to the method, the temperature of the surface of the evaporator and the accumulated running time of the compressor need to be referred to simultaneously when the heater is started to work, misoperation caused by inaccurate detection of single data is avoided, the accuracy of defrosting operation of the evaporator is improved, the service life of the evaporator is guaranteed, and then the service life of refrigeration equipment is guaranteed; and the use experience of the user is improved.

Description

Technical Field

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

[0002] In refrigeration equipment, taking a refrigerator as an example, the refrigeration of the refrigerator is to transmit cold air from the compressor to the evaporator. During the refrigeration process, the evaporator may generate a frost layer on its surface due to excessive cold air received. The presence of the frost layer will affect the service life of the evaporator, and thus affect the service life of the refrigerator. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a defrost control method, a defrost control system, a device, and a refrigeration equipment. By setting the heater on the surface of the evaporator, the heat loss of the heater can be reduced, and the control of the heater is realized through the drive module in the refrigeration equipment without an external temperature controller, avoiding the overheating risk. Moreover, when starting the heater to work, the temperature of the evaporator surface and the cumulative operation time of the compressor need to be referred to simultaneously, avoiding incorrect operations caused by inaccurate detection of a single data, improving the accuracy of the defrost operation of the evaporator, ensuring the service life of the evaporator, and thus ensuring the service life of the refrigeration equipment and improving the user experience.

[0004] According to a first aspect of the present invention, a defrost control method is provided, which is applied to a defrost control module. The defrost control module is arranged in a refrigeration equipment. The refrigeration equipment further includes an evaporator, a temperature detection module, a heater, a drive module, and a compressor. The temperature detection module is arranged adjacent to the evaporator. The temperature detection module is used to detect the temperature of the evaporator. The heater is arranged on the surface of the evaporator. The heater is used to heat the surface of the evaporator. The drive module is electrically connected to the heater. The drive module is used to control the heater to work. The defrost control module is electrically connected to the temperature detection module, the drive module, and the compressor respectively. The method includes: detecting whether the refrigeration equipment meets the defrost condition; when it is detected that the refrigeration equipment meets the defrost condition, obtaining the cumulative operation duration of the compressor at the current moment, and obtaining the first temperature of the evaporator detected by the temperature detection module at the current moment, where the cumulative operation duration is the operation duration corresponding to the compressor from the time when the refrigeration equipment last reset the operation duration to the current moment; if the cumulative operation duration is greater than or equal to a first preset duration, and the first temperature is less than a first preset temperature, then controlling the drive module to send a first heating instruction to the heater, so that the heater heats the surface of the evaporator.

[0005] In a possible implementation of the first aspect, after the step of controlling the driving module to send a heating instruction to the heater if the cumulative operation duration is greater than or equal to the first preset duration and the first temperature is less than the first preset temperature, the method further includes: obtaining a second temperature in the temperature detection module and a heating duration of the heater in the driving module, where the second temperature is the temperature of the evaporator surface after being heated by the heater; if the second temperature is greater than the second preset temperature and the heating duration is greater than or equal to the preset heating duration, controlling the driving module to send a stop working instruction to the heater to control the heater to stop working, where the second preset temperature is greater than the first preset temperature; if the second temperature is greater than the second preset temperature and the heating duration is less than the preset heating duration, determining the current heating power of the heater according to a preset rule, where the current heating power is less than the full power of the heater; controlling the driving module to send a second heating instruction to the heater so that the heater heats the evaporator surface according to the second heating instruction until the heating duration is greater than or equal to the preset heating duration, where the second heating instruction includes power information corresponding to the current heating power.

[0006] In a possible implementation of the first aspect, the step of determining the current heating power of the heater according to a preset rule if the second temperature is greater than the second preset temperature and the heating duration is less than the preset heating duration includes: determining the working current used by the heater to heat the evaporator surface according to the preset rule; and determining the current heating power according to the working current.

[0007] In a possible implementation of the first aspect, the step of determining the working current used by the heater to heat the evaporator surface according to the preset rule includes: obtaining the current temperature of the heater when the evaporator surface reaches the second temperature; and determining the working current according to the current temperature of the heater and a query table, where the query table includes temperatures of multiple heaters and the working current of each heater corresponding to each temperature, and the higher the temperature of the heater, the smaller the working current.

[0008] In a possible implementation of the first aspect, after the step of controlling the driving module to send a stop working instruction to the heater to control the heater to stop working, the method further includes: resetting the cumulative operation duration of the compressor.

[0009] In a possible implementation of the first aspect, the step of detecting whether the refrigeration device meets the defrosting condition includes: obtaining the cumulative operation duration of the compressor; if the cumulative operation duration is greater than or equal to a second preset duration, determining that the refrigeration device meets the defrosting condition, where the second preset duration is less than the first preset duration.

[0010] According to the second aspect of the present invention, there is provided a defrosting control system applied to a refrigeration device. The defrosting control system includes an evaporator; a temperature detection module disposed adjacent to the evaporator for detecting the temperature of the evaporator; a heater disposed on the surface of the evaporator for heating the surface of the evaporator; a driving module electrically connected to the heater for controlling the operation of the heater; a compressor connected to the evaporator through a gas pipeline; and a defrosting control module electrically connected to the temperature detection module, the driving module, and the compressor. The defrosting control module is configured to execute the method provided in the first aspect.

[0011] In a possible implementation of the second aspect, the heater is a thin film heater, and the operating power of the heater is 50W - 150W.

[0012] According to the third aspect of the present invention, there is provided a refrigeration device applied to a defrosting control module. The defrosting control module is disposed in the refrigeration device. The refrigeration device further includes an evaporator, a temperature detection module, a heater, a driving module, and a compressor. The temperature detection module is disposed adjacent to the evaporator for detecting the temperature of the evaporator. The heater is disposed on the surface of the evaporator for heating the surface of the evaporator. The driving module is electrically connected to the heater for controlling the operation of the heater. The defrosting control module is electrically connected to the temperature detection module, the driving module, and the compressor respectively. The device includes: a detection unit for detecting whether the refrigeration device meets the defrosting condition; a data acquisition unit for, when it is detected that the refrigeration device meets the defrosting condition, obtaining the cumulative operation duration of the compressor at the current moment and the first temperature of the evaporator detected by the temperature detection module at the current moment, where the cumulative operation duration is the operation duration of the compressor from the time when the refrigeration device last reset the operation duration to the current moment; and a control unit for, if the cumulative operation duration is greater than or equal to a first preset duration and the first temperature is less than a first preset temperature, controlling the driving module to send a first heating instruction to the heater so that the heater heats the surface of the evaporator.

[0013] According to a fourth aspect of the present invention, a refrigeration device is provided. The refrigeration device includes a defrost control module, an evaporator, a temperature detection module, a heater, a drive module, and a compressor. The temperature detection module is disposed adjacent to the evaporator, and the temperature detection module is configured to detect the temperature of the evaporator. The heater is disposed on the surface of the evaporator, and the heater is configured to heat the surface of the evaporator. The drive module is electrically connected to the heater, and the drive module is configured to control the operation of the heater. The defrost control module is electrically connected to the temperature detection module, the drive module, and the compressor respectively, and the defrost control module is configured to execute the method provided in the first aspect.

[0014] Based on any one of the above aspects, an embodiment of the present invention provides a defrost control method, a defrost control system, a device, and a refrigeration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic flowchart of the steps of a defrost control method provided by an embodiment of the present invention; Figure 2 It is a schematic flowchart of the steps of a defrost control method provided by another embodiment of the present invention; Figure 3 It is a schematic diagram of the functional modules of a defrost control system provided by this embodiment; Figure 4 It is a schematic diagram of the functional modules of a defrost control device provided by this embodiment; Figure 5 It is a schematic diagram of the functional modules of a refrigeration device provided by this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0019] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0021] It should be noted that, without conflict, different features in the embodiments of the present invention can be combined with each other.

[0022] The inventor found that in the related art, the defrost heater on the refrigeration equipment is a steel pipe heating tube and requires an external temperature controller, which has an overheating risk and high energy consumption.

[0023] In order to solve the technical problems mentioned in the foregoing background art and the above-mentioned technical problems, the inventor innovatively designed the following technical solutions. The specific implementation solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of the steps of the defrost control method provided by an embodiment of the present invention. This method is applied to Figure 4The defrost control module 100 shown, the defrost control module 100 is arranged in a refrigeration device, and the refrigeration device further includes an evaporator, a temperature detection module, a heater, a drive module, and a compressor. The temperature detection module is arranged adjacent to the evaporator, and the temperature detection module is used to detect the temperature of the evaporator. Among them, the temperature detection module may include at least one temperature sensor for detecting the temperature of the evaporator. The heater is arranged on the surface of the evaporator, and the heater is used to heat the surface of the evaporator. Among them, the heater may be a PTC ceramic heater or an electric wire heater. Preferably, the heater is a PTC ceramic heater. The drive module is electrically connected to the heater, and the drive module is used to control the operation of the heater. Among them, the drive module may be a thyristor control circuit. The defrost control module is electrically connected to the temperature detection module, the drive module, and the compressor respectively. It should be noted that the refrigeration device may be a refrigerator, a freezer, or other refrigeration devices. Next, the Figure 1 shown process will be elaborated in detail. The defrost control method may specifically include the following steps: Step S110: Detect whether the refrigeration device meets the defrost condition.

[0025] Among them, the defrost condition may be that the temperature of the evaporator reaches the frosting temperature. Detecting whether the refrigeration device meets the defrost condition may be to use a temperature sensor to detect the temperature of the evaporator to determine whether the defrost condition is met. Since in the refrigeration device, the compressor transports low-temperature gas to the evaporator to achieve the refrigeration effect of the refrigeration device. Therefore, the defrost condition may also be that the cumulative operation time of the compressor reaches the frosting time. The cumulative operation time of the compressor may be the operation time from the start of the refrigeration device to the current moment, or the operation time from the reset of the cumulative operation time of the compressor to the current moment. The defrost condition may also be that there is a frost layer on the surface of the evaporator. The image of the surface of the evaporator can be obtained in real time to determine whether there is a frost layer on the surface of the evaporator, and then determine whether the refrigeration device meets the defrost condition.

[0026] Step S120: When it is detected that the refrigeration device meets the defrost condition, obtain the cumulative operation time of the compressor at the current moment, and obtain the first temperature of the evaporator detected by the temperature detection module at the current moment.

[0027] Among them, the cumulative operation time is the operation time corresponding to the compressor from the last reset of the operation time of the refrigeration device to the current moment.

[0028] In the embodiment of the present invention, when it is detected that the refrigeration device meets the defrost condition, to avoid detection failures, it is also necessary to further obtain the cumulative operation time of the compressor at the current moment, and the temperature of the evaporator detected by the temperature detection module at the current moment, and further determine whether there is a frost layer on the evaporator.

[0029] Step S130: If the cumulative operation duration is greater than or equal to the first preset duration and the first temperature is lower than the first preset temperature, then control the drive module to send a first heating instruction to the heater so that the heater heats the surface of the evaporator.

[0030] Among them, the first heating instruction may include information such as heating information, heating power information, working current value, etc. The first heating instruction can be set according to actual requirements and will not be specifically limited here.

[0031] When the cumulative operation duration of the compressor meets the preset duration condition and the first temperature of the evaporator meets the preset temperature condition, a defrost operation is triggered. The defrost control module controls the drive module to send a first heating instruction to the heater so that the heater heats the surface of the evaporator according to the first heating instruction.

[0032] The solution provided by the present invention sets the heater on the surface of the evaporator, which can reduce the heat loss of the heater, and realizes the control of the heater through the drive module in the refrigeration device without an external temperature controller, avoiding the overheating risk. Moreover, starting the heater requires referring to both the temperature of the evaporator surface and the cumulative operation time of the compressor, avoiding incorrect operations caused by inaccurate single data detection, improving the accuracy of the evaporator defrost operation, ensuring the service life of the evaporator, and thus ensuring the service life of the refrigeration device and improving the user experience.

[0033] Please refer to Figure 2 , Figure 2 , which is a schematic diagram of the step flow of the defrost control method provided by another embodiment of the present invention. The following will elaborate in detail on the Figure 2 shown process. The defrost control method may specifically include the following steps: Step S210: Obtain the cumulative operation duration of the compressor.

[0034] Step S220: If the cumulative operation duration is greater than or equal to the second preset duration, it is determined that the refrigeration device meets the defrost condition, where the second preset duration is less than the first preset duration.

[0035] In the embodiment of the present invention, since the compressor transfers cold air to the evaporator in the refrigeration device, the longer the cumulative operation duration of the compressor, the more cold air is transferred to the evaporator, and the more cold air the evaporator receives, the easier it is to generate a frost layer on the surface. Therefore, it is possible to determine whether the refrigeration device meets the defrost condition based on the cumulative operation duration of the compressor.

[0036] Step S230: When it is detected that the refrigeration device meets the defrost condition, obtain the cumulative operation duration of the compressor at the current moment and obtain the first temperature of the evaporator detected by the temperature detection module at the current moment.

[0037] Step S240: If the cumulative operation duration is greater than or equal to the first preset duration and the first temperature is less than the first preset temperature, then control the drive module to send a first heating instruction to the heater so that the heater heats the surface of the evaporator.

[0038] For the detailed descriptions of steps S230 to S240, reference can be made to the detailed descriptions of steps S120 to S130 in the foregoing embodiments, which will not be elaborated herein.

[0039] Step S250: Obtain the second temperature in the temperature detection module and the heating duration of the heater in the drive module, where the second temperature is the temperature of the surface of the evaporator after being heated by the heater.

[0040] Step S260: If the second temperature is greater than the second preset temperature and the heating duration is greater than or equal to the preset heating duration, then control the drive module to send a stop working instruction to the heater to control the heater to stop working, where the second preset temperature is greater than the first preset temperature.

[0041] In the embodiment of the present invention, when the temperature of the surface of the evaporator is greater than the second temperature, the frost layer on the surface of the evaporator can be completely melted. However, in order to further determine that the second temperature is the actual temperature of the surface of the evaporator rather than a detection error caused by a malfunction of the temperature detection module. Therefore, it is also necessary to further judge the heating duration. When the heater is heating, the frost layer on the surface of the evaporator will melt due to the temperature of the heater. Therefore, the heating duration is also the defrosting duration of the surface of the evaporator. When the temperature of the surface of the evaporator reaches the temperature at which the frost layer can be completely melted and the defrosting duration of the surface of the evaporator reaches the preset duration, it is determined that the frost layer on the surface of the evaporator is completely melted. At this time, the defrosting control module controls the drive module to send a stop working instruction to the heater to make the heater stop working.

[0042] Step S270: If the second temperature is greater than the second preset temperature and the heating duration is less than the preset heating duration, determine the current heating power of the heater according to a preset rule, where the current heating power is less than the full power of the heater.

[0043] Among them, the preset rule can be to query an information table, and the information table can include multiple different temperatures of the heater and the power corresponding to each temperature. The preset rule can also be to detect and calculate the real-time heating power of the heater in real time.

[0044] In the embodiment of the present invention, when the heater heats the surface of the evaporator, in order to quickly raise the temperature, the heater starts at full power (maximum power). As the temperature of the heater rises and the temperature of the surface of the evaporator increases, the frost layer gradually melts. At this time, in order to save energy consumption, the current heating power during the heating process can be determined according to a preset rule.

[0045] In some embodiments, when the second temperature is greater than the second preset temperature and the heating duration is less than the preset heating duration, the steps of determining the current heating power of the heater according to the preset rules include: determining the working current used by the heater to heat the surface of the evaporator according to the preset rules. Determining the current heating power according to the working current.

[0046] Since the power is related to the current or voltage of the heater at present. And during the use of the refrigeration device, the voltage is constant. Therefore, the current heating power of the heater can be determined by obtaining the working current of the heater.

[0047] Specifically, the steps of determining the working current used by the heater to heat the surface of the evaporator according to the preset rules include: obtaining the current temperature of the heater when the surface of the evaporator reaches the second temperature. Determining the working current according to the current temperature of the heater and the query table, where the query table includes the temperatures of multiple heaters and the working current of each heater corresponding to each temperature, and the higher the temperature of the heater, the smaller the working current.

[0048] Among them, the query table can be pre-configured and stored in the defrost control module, or the refrigeration device is communicatively connected to the cloud server to obtain the query table from the cloud server. In the query table, different temperature ranges can be set for the temperature of the heater, and different working current values correspond to different temperature ranges, or different working current values can be set for each temperature of the heater. Exemplarily, the query table can be as shown in Table 1 below:

[0049] Table 1 According to Table 1, the working current corresponding to the current temperature of the heater can be determined. Using the query table can quickly determine the working current corresponding to the current temperature of the heater, improving the defrost efficiency in the refrigeration device.

[0050] In the embodiment of the present invention, when the second temperature is greater than the second preset temperature but the heating duration is less than the preset heating duration, it is impossible to further determine whether the frost layer on the surface of the evaporator is completely melted. And to save the energy consumption of the refrigeration device, the heating power of the heater can be adjusted according to the current temperature of the heater.

[0051] Step S280: Control the drive module to send a second heating instruction to the heater so that the heater heats the surface of the evaporator according to the second heating instruction until the heating duration is greater than or equal to the preset heating duration.

[0052] Among them, the second heating instruction includes the power information corresponding to the current heating power.

[0053] Step S290: Reset the cumulative operation duration of the compressor.

[0054] In an embodiment of the present invention, to avoid the influence on the next defrosting operation after the previous evaporator defrosting operation, the cumulative operation duration of the compressor is reset to improve the accuracy of the next evaporator defrosting operation.

[0055] The solution provided by the present invention requires referring to both the temperature of the evaporator surface and the cumulative operation time of the compressor when starting the heater to work, and the stop working condition of the heater requires referring to both the temperature of the evaporator surface and the heating duration of the heater. This avoids incorrect operations caused by inaccurate detection of a single piece of data, improves the accuracy of the evaporator defrosting operation, guarantees the service life of the evaporator, and further guarantees the service life of the refrigeration equipment, improving the user experience. Moreover, during the heating process, the heating power of the heater can be adjusted according to the temperature of the heater, which can save the energy consumption of the heater.

[0056] In a specific implementation process, take the first preset duration as 8h, the second preset duration as 6h, the first temperature as -8°C, the second temperature as 5°C, and the heating duration as 20min as an example. When it is detected that the cumulative operation duration of the compressor is 6h, it can be determined that the refrigeration equipment meets the defrosting condition. At this time, to prevent frequent defrosting, the defrosting operation is started after accumulating enough frost. Further, the cumulative operation duration of the compressor and the temperature of the evaporator detected by the temperature detection module are obtained. When the cumulative operation duration of the compressor reaches 8h at the current moment and the temperature of the evaporator is -8°C at the current moment, at this time, the defrosting control module determines that the evaporator needs to perform a defrosting operation, and the defrosting control module controls the driving module to send a first heating and refrigeration signal to the heater to start the heater at full power. During the heating process of the heater, the temperature of the evaporator surface is also monitored in real time through the temperature monitoring module, and the heating duration of the heater is monitored. When the temperature of the evaporator surface is greater than 5°C during the heating process, but the heating duration of the heater is less than 20min, at this time, to rule out temperature detection errors caused by malfunctions of the temperature monitoring module, the surface of the evaporator is continuously heated by the heater. To save the energy consumption of the refrigeration equipment, the current of the heater can be adjusted according to the information in the query table, and then the current heating power of the heater can be adjusted until the heating duration of the heater is greater than or equal to 20min. At this time, the defrosting control module controls the driving module to send a stop working instruction to the heater to control the heater to stop working. After the heater stops working, the cumulative operation duration of the compressor is reset to ensure the accuracy of the next defrosting operation. When triggering the defrosting operation, not only the temperature of the evaporator surface is considered, but also the cumulative operation duration of the compressor is considered, which ensures the accuracy of the defrosting operation. Moreover, before the defrosting control module controls the driving module to send a stop working instruction to the heater, the temperature of the evaporator surface and the heating duration of the heater are also considered. Through the joint judgment of multi-dimensional data, the accuracy of the judgment can be improved.

[0057] For the same inventive concept, please refer to Figure 3 , Figure 3 which is a schematic diagram of the functional modules of a defrost control system provided in this embodiment. The defrost control system includes an evaporator; a temperature detection module, which is arranged adjacent to the evaporator and is used to detect the temperature of the evaporator; a heater, which is arranged on the surface of the evaporator and is used to heat the surface of the evaporator; a drive module, which is electrically connected to the heater and is used to control the operation of the heater; a compressor, which is connected to the evaporator through a gas pipeline; a defrost control module, which is electrically connected to the temperature detection module, the drive module and the compressor, and the defrost control module is used to execute the defrost control method in the foregoing embodiment.

[0058] In the embodiment of the present invention, the defrost control system further includes a power supply and a timing module. The power supply supplies power to the refrigeration equipment, and the timing module times the cumulative operation duration of the compressor. By arranging the heater on the surface of the evaporator, the heat loss of the heater can be reduced, and the control of the heater is realized through the drive module in the refrigeration equipment, without an external temperature controller, avoiding the overheating risk. Moreover, starting the heater requires referring to both the temperature of the evaporator surface and the cumulative operation time of the compressor, avoiding incorrect operations caused by inaccurate detection of a single data, improving the accuracy of the defrost operation of the evaporator, ensuring the service life of the evaporator, and further ensuring the service life of the refrigeration equipment, improving the user experience.

[0059] In some embodiments, the heater is a thin film heater, and the working power of the heater is 50W - 150W.

[0060] In the embodiment of the present invention, the heater is a thin film heater, and the thin film heater can be attached to the surface of the evaporator to reduce the heat loss on the heater.

[0061] For the same inventive concept, please refer to Figure 4 , Figure 4 which is a schematic diagram of the functional modules of a defrost control device 100 provided in this embodiment. In this embodiment, the functional modules of the defrost control device 100 can be divided according to the above method embodiment. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present invention is schematic, only a logical function division, and there can be other division methods in actual implementation. For example, in the case of dividing each functional module corresponding to each function, Figure 4The defrost control device 100 shown is only a schematic diagram of a device. The defrost control device 100 is applied to a defrost control module, and the defrost control module is provided in a refrigeration device. The refrigeration device further includes an evaporator, a temperature detection module, a heater, a drive module, and a compressor. The temperature detection module is disposed adjacent to the evaporator, and the temperature detection module is used to detect the temperature of the evaporator. The heater is disposed on the surface of the evaporator, and the heater is used to heat the surface of the evaporator. The drive module is electrically connected to the heater, and the drive module is used to control the operation of the heater. The defrost control module is electrically connected to the temperature detection module, the drive module, and the compressor respectively. The functions of the respective functional modules of the defrost device will be described in detail below.

[0062] The detection unit 110. In this embodiment, the detection unit 110 can be used to execute Figure 1 the steps S110 shown. For the specific description of the detection unit 110, reference can be made to the description of step S110.

[0063] The data acquisition unit 120. In this embodiment, the data acquisition unit 120 can be used to execute Figure 1 the steps S120 shown. For the specific description of the data acquisition unit 120, reference can be made to the description of step S120.

[0064] The control unit 130. In this embodiment, the control unit 130 can be used to execute Figure 1 the steps S130 shown. For the specific description of the control unit 130, reference can be made to the description of step S130.

[0065] Based on the same inventive concept, please refer to Figure 5 , Figure 5 which is a schematic diagram of the functional modules of a refrigeration device 10 provided in this embodiment. In this embodiment, the functional modules of the refrigeration device 10 can be divided according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiments of the present invention is illustrative, and is only a logical function division. The actual implementation may have other division methods. For example, in the case of dividing each functional module corresponding to each function, Figure 5The illustrated refrigeration device 10 is only a schematic diagram of a device. The refrigeration device 10 includes a defrost control module 101, an evaporator 102, a temperature detection module 103, a heater 104, a drive module 105, and a compressor 106. The temperature detection module 103 is disposed adjacent to the evaporator 102, and the temperature detection module 103 is used to detect the temperature of the evaporator. The heater 104 is disposed on the surface of the evaporator 102, and the heater 104 is used to heat the surface of the evaporator 102. The drive module 105 is electrically connected to the heater 104, and the drive module 105 is used to control the operation of the heater 104. The defrost control module 101 is electrically connected to the temperature detection module 103, the drive module 105, and the compressor 106 respectively. The defrost control module 101 is used to execute the defrost control method provided in the foregoing embodiment.

[0066] Further, an embodiment of the present invention further provides a computer storage medium storing an executable program, and the executable program can be used to implement the defrost control method provided in the foregoing method embodiment when executed.

[0067] Of course, for a computer storage medium including an executable program provided in an embodiment of the present invention, the executable program is not limited to the above method operations, and can also execute related operations in the defrost control method provided in any embodiment of the present invention.

[0068] In summary, the present invention provides a defrost control method, a defrost control system, a device, and a refrigeration device. The defrost control method is applied to a defrost control module, and the defrost control module is disposed in the refrigeration device. In the present invention, the heater is disposed on the surface of the evaporator, which can reduce the heat loss of the heater, and the control of the heater is realized through the drive module in the refrigeration device, without an external temperature controller, avoiding the overheating risk. Moreover, when starting the heater to work, it is necessary to refer to the temperature of the evaporator surface and the cumulative operation time of the compressor at the same time, avoiding incorrect operations caused by inaccurate detection of a single data, improving the accuracy of the defrost operation of the evaporator, ensuring the service life of the evaporator, and further ensuring the service life of the refrigeration device and improving the user experience.

[0069] Embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of methods, apparatuses, and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate for implementation in the process Figure 1 a process or multiple processes and / or blocks Figure 1means for the functions specified in one or more boxes.

[0070] Although the present invention has been described in connection with various embodiments, those skilled in the art will recognize other variations of the disclosed embodiments while practicing the claimed invention by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single processor or other unit may implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not indicate that these measures cannot be combined to produce a favorable effect.

[0071] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A defrost control method, characterized in that, Applied to the defrost control module, the defrost control module is arranged in the refrigeration device. The refrigeration device further includes an evaporator, a temperature detection module, a heater, a drive module and a compressor. The temperature detection module is arranged adjacent to the evaporator. The temperature detection module is used to detect the temperature of the evaporator. The heater is arranged on the surface of the evaporator. The heater is used to heat the surface of the evaporator. The drive module is electrically connected to the heater. The drive module is used to control the heater to work. The defrost control module is electrically connected to the temperature detection module, the drive module and the compressor respectively. The method includes: Detect whether the refrigeration device meets the defrost condition; When it is detected that the refrigeration device meets the defrost condition, obtain the cumulative operation duration of the compressor at the current moment, and obtain the first temperature of the evaporator detected by the temperature detection module at the current moment. Wherein, the cumulative operation duration is the operation duration corresponding to the compressor from the last time the refrigeration device reset the operation duration to the current moment; If the cumulative operation duration is greater than or equal to the first preset duration, and the first temperature is less than the first preset temperature, then control the drive module to send a first heating instruction to the heater, so that the heater heats the surface of the evaporator.

2. The defrosting control method according to claim 1, wherein After the step of if the cumulative operation duration is greater than or equal to the first preset duration, and the first temperature is less than the first preset temperature, then control the drive module to send a heating instruction to the heater, the method further includes: Obtain the second temperature in the temperature detection module and the heating duration of the heater in the drive module. Wherein, the second temperature is the temperature of the surface of the evaporator after being heated by the heater; If the second temperature is greater than the second preset temperature, and the heating duration is greater than or equal to the preset heating duration, then control the drive module to send a stop work instruction to the heater to control the heater to stop working, wherein the second preset temperature is greater than the first preset temperature; If the second temperature is greater than the second preset temperature and the heating duration is less than the preset heating duration, determine the current heating power of the heater according to the preset rule, wherein the current heating power is less than the full power of the heater; Control the drive module to send a second heating instruction to the heater, so that the heater heats the surface of the evaporator according to the second heating instruction until the heating duration is greater than or equal to the preset heating duration, wherein the second heating instruction includes the power information corresponding to the current heating power.

3. The defrosting control method according to claim 2, characterized in that, The step of if the second temperature is greater than the second preset temperature and the heating duration is less than the preset heating duration, determine the current heating power of the heater according to the preset rule, includes: Determine the working current used by the heater to heat the surface of the evaporator according to the preset rule; Determine the current heating power according to the working current.

4. The defrosting control method according to claim 3, characterized in that, The step of determining the working current adopted by the heater for heating the surface of the evaporator according to the preset rule includes: Obtaining the current temperature of the heater when the surface of the evaporator reaches the second temperature; Determining the working current according to the current temperature of the heater and a query table, where the query table includes the temperatures of multiple heaters and the working currents of the heaters corresponding to each temperature, and the higher the temperature of the heater, the smaller the working current.

5. The defrosting control method according to claim 1, wherein After the step of the control driving module sending a stop working instruction to the heater to control the heater to stop working, the method further includes: Resetting the cumulative operation duration of the compressor.

6. The defrosting control method according to claim 1, wherein The step of detecting whether the refrigeration device meets the defrosting condition includes: Obtaining the cumulative operation duration of the compressor; If the cumulative operation duration is greater than or equal to a second preset duration, determining that the refrigeration device meets the defrosting condition, where the second preset duration is less than the first preset duration.

7. A defrosting control system, characterized in that, Applied to a refrigeration device, the defrosting control system includes An evaporator; A temperature detection module, which is arranged adjacent to the evaporator and is used to detect the temperature of the evaporator; A heater, which is arranged on the surface of the evaporator and is used to heat the surface of the evaporator; A driving module, which is electrically connected to the heater and is used to control the heater to work; A compressor, which is connected to the evaporator through a gas pipeline; A defrosting control module, which is electrically connected to the temperature detection module, the driving module and the compressor, and the defrosting control module is used to execute the method according to any one of claims 1-6.

8. The defrost control system according to claim 7, characterized in that, The heater is a thin film heater, and the working power of the heater is 50W - 150W.

9. A defrost control device, characterized in that, Applied to a defrosting control module, the defrosting control module is arranged in a refrigeration device, and the refrigeration device further includes an evaporator, a temperature detection module, a heater, a driving module and a compressor. The temperature detection module is arranged adjacent to the evaporator and is used to detect the temperature of the evaporator. The heater is arranged on the surface of the evaporator and is used to heat the surface of the evaporator. The driving module is electrically connected to the heater and is used to control the heater to work. The defrosting control module is electrically connected to the temperature detection module, the driving module and the compressor respectively. The device includes: A detection unit, which is used to detect whether the refrigeration device meets the defrosting condition; A data acquisition unit, which is used to obtain the cumulative operation duration of the compressor at the current moment and the first temperature of the evaporator detected by the temperature detection module at the current moment when it is detected that the refrigeration device meets the defrosting condition, where the cumulative operation duration is the operation duration of the compressor from the last reset operation duration of the refrigeration device to the current moment; A control unit, configured to control the driving module to send a first heating instruction to the heater to heat the surface of the evaporator if the cumulative running duration is greater than or equal to a first preset duration and the first temperature is lower than a first preset temperature.

10. A refrigeration device, characterized in that, The refrigeration device includes a defrost control module, an evaporator, a temperature detection module, a heater, a driving module, and a compressor; The temperature detection module is disposed adjacent to the evaporator, and the temperature detection module is configured to detect the temperature of the evaporator; The heater is disposed on the surface of the evaporator, and the heater is configured to heat the surface of the evaporator; The driving module is electrically connected to the heater, and the driving module is configured to control the operation of the heater; The defrost control module is electrically connected to the temperature detection module, the driving module, and the compressor respectively, and the defrost control module is configured to execute the method according to any one of claims 1-6.

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