Energy-saving method, device, electronic device and storage medium for refrigerator

Abstract

The present application provides a refrigerator energy-saving method, device, electronic device and storage medium, the method comprising: when the actual temperature of the compartment of the refrigerator reaches the start-up point temperature of the compressor, determining the temperature difference between the current ambient temperature and the historical ambient temperature; if the temperature difference is within the set temperature range, increasing the frequency of the compressor to accelerate the speed at which the actual compartment temperature drops to the shutdown point temperature and shorten the compressor operation time; if the temperature difference is within the target temperature range, reducing the frequency of the compressor to reduce the operating power to maintain the actual compartment temperature below the start-up point temperature and reduce the number of compressor starts and stops during the refrigeration cycle. In the present application, the refrigerator can save a certain amount of electricity during long-term operation.

Description

Technical Field

[0001] The present application relates to the technical field of energy saving of refrigerators, and in particular to an energy saving method, device, electronic device and storage medium for refrigerators. Background Art

[0002] With the development of smart homes, refrigerators have become indispensable smart devices, and saving electricity in refrigerators has become a major problem.

[0003] In the prior art, patent number CN202111128422.3 discloses a refrigerator energy-saving control method, system and refrigerator, but this method only collects the operating status of the refrigerator within a preset time period to score and then feed back to the user, requiring the user to develop a habit of adjusting some parameters of the refrigerator, and cannot achieve autonomous energy saving. Patent number CN201911351234.X discloses a refrigerator energy-saving control method, device and refrigerator. This method can determine the operation of the refrigerator load within a period of time to autonomously adjust the set temperature of the compartment and the gear position of the compressor, but regulating the compartment temperature will increase the deviation between the actual temperature and the user-set temperature, which may cause the temperature-sensitive food in the box to deteriorate.

[0004] There is currently no good way to achieve energy saving in refrigerators. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a refrigerator energy saving method, device, electronic device and storage medium to solve the problem of refrigerator energy saving. The specific technical solution is as follows:

[0006] In a first aspect, a refrigerator energy saving method is provided, the method comprising:

[0007] When the actual temperature of the refrigerator compartment reaches the start-up point temperature of the compressor, the temperature difference between the current ambient temperature and the historical ambient temperature is determined;

[0008] If the temperature difference is within a set temperature interval, the frequency of the compressor is increased to accelerate the speed at which the actual temperature of the compartment drops to the shutdown point temperature and shorten the compressor operation time, wherein the set temperature interval indicates that the current ambient temperature is lower than the historical ambient temperature, and the temperature of the set temperature interval is lower than the temperature of the intermediate temperature interval;

[0009] If the temperature difference is within the target temperature range, the frequency of the compressor is reduced.

[0010] To reduce the actual temperature of the compartment to maintain the operating power below the start-up point temperature, reduce the number of compressor starts and stops during the refrigeration cycle, wherein the target temperature range indicates the current cycle

[0011] The ambient temperature is greater than the historical ambient temperature, and the temperature in the target temperature interval is higher than the temperature in the middle temperature interval.

[0012] Optionally, the set temperature interval includes a first temperature interval and a second temperature interval.

[0013] If the temperature difference is within the set temperature range, increasing the frequency of the compressor includes: if the temperature difference is within the first temperature range, controlling the compressor to

[0014] The frequency corresponding to the previous gear increases at a first speed change rate to a frequency corresponding to a first preset gear, wherein the first preset gear is higher than the current gear;

[0015] If the temperature difference is within the second temperature range, the compressor is controlled from the current

[0016] The frequency corresponding to the front gear is increased to the frequency corresponding to the second preset gear at a second speed change rate, wherein the temperature in the second temperature range is higher than the temperature in the first temperature range,

[0017] The second speed change rate is smaller than the first speed change rate, and the second preset gear is smaller than the first preset gear and larger than the current gear.

[0018] Optionally, the target temperature interval includes a third temperature interval and a fourth temperature interval.

[0019] If the temperature difference is within the target temperature range, reducing the frequency of the compressor includes: if the temperature difference is within the third temperature range, controlling the compressor to

[0020] The frequency corresponding to the previous gear is reduced to the frequency corresponding to the third preset gear at a third speed change rate, wherein the third preset gear is lower than the current gear;

[0021] If the temperature difference is within the fourth temperature range, the compressor is controlled to

[0022] The frequency corresponding to the previous gear is reduced to the frequency corresponding to the fourth preset gear at a fourth speed change rate, wherein the temperature in the fourth temperature range is higher than the temperature in the third temperature range, the fourth speed change rate is lower than the third speed change rate, and the fourth preset gear is greater than the third preset gear and lower than the current gear.

[0023] Optionally, before controlling the compressor to adjust the frequency, the method further includes:

[0024] Controlling the compressor to run at a preset speed for a preset time;

[0025] If a gear change occurs when the vehicle is running at the preset speed, the vehicle is re-run at the preset speed for the preset time period.

[0026] Optionally, controlling the compressor to operate at a preset speed for a preset time period includes:

[0027] If the temperature difference is within a third temperature range, controlling the compressor to run at a preset speed for a first time period;

[0028] If the temperature difference is within a fourth temperature interval, the compressor is controlled to run at a preset speed for a second time period, wherein the second time period is greater than the first time period.

[0029] Optionally, after determining the temperature difference between the current ambient temperature and the historical ambient temperature, the method further includes:

[0030] If the temperature difference is within the intermediate temperature range, when the refrigerator changes gear, the current gear and the adjusted target gear are determined;

[0031] When the current frequency corresponding to the current gear is adjusted to the target frequency corresponding to the target gear, the speed change rate of the compressor is reduced.

[0032] Optionally, determining the temperature difference between the current ambient temperature and the historical ambient temperature includes:

[0033] The average temperature in the historical period is taken as the historical ambient temperature;

[0034] Collect the ambient temperature once every preset period;

[0035] The current ambient temperature is obtained by taking an average of the collected ambient temperatures.

[0036] In a second aspect, a refrigerator energy saving device is provided, the device comprising:

[0037] A determination module, used to determine the temperature difference between the current ambient temperature and the historical ambient temperature when the actual temperature of the refrigerator compartment reaches the start-up point temperature of the compressor;

[0038] An increasing module, for increasing the frequency of the compressor if the temperature difference is within a set temperature interval, so as to accelerate the speed at which the actual temperature of the compartment drops to the shutdown point temperature and shorten the compressor operation time, wherein the set temperature interval indicates that the current ambient temperature is less than the historical ambient temperature, and the temperature of the set temperature interval is lower than the temperature of the intermediate temperature interval;

[0039] A reduction module is used to reduce the frequency of the compressor if the temperature difference is within a target temperature range, so as to reduce the operating power to maintain the actual temperature of the compartment below the start-up point temperature, and reduce the number of compressor starts and stops during the refrigeration cycle, wherein the target temperature range indicates that the current ambient temperature is greater than the historical ambient temperature, and the temperature of the target temperature range is higher than the temperature of the intermediate temperature range.

[0040] In a third aspect, an electronic 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;

[0041] Memory, used to store computer programs;

[0042] The processor is used to implement any of the steps of the refrigerator energy saving method when executing the program stored in the memory.

[0043] In a fourth aspect, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, any of the steps of the energy-saving method for a refrigerator is implemented.

[0044] Beneficial effects of the embodiments of the present application:

[0045] The embodiment of the present application provides an energy-saving method for a refrigerator, which finely adjusts the compressor frequency instead of the gear according to the ambient temperature control. When the external ambient temperature is low, the frequency is increased to provide more cooling, and the compartment temperature is lowered to the shutdown point temperature at a faster speed, shortening the compressor operation time to achieve the purpose of saving power; when the external ambient temperature is high, the frequency is reduced to provide less cooling, so that the compressor maintains the compartment temperature below the startup point temperature with lower operating power, reduces the number of compressor starts and stops during the refrigeration cycle, and achieves the purpose of saving power. Compared with the prior art, the present application can still play a certain energy-saving role without raising the set temperature of the compartment.

[0046] Of course, implementing any product or method of the present application does not necessarily require achieving all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application 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.

[0048] Figure 1 A schematic diagram of the hardware environment of a refrigerator energy saving method provided in an embodiment of the present application;

[0049] Figure 2 A flow chart of a refrigerator energy saving method provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of the structure of an energy-saving device for a refrigerator provided in an embodiment of the present application;

[0051] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] 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.

[0053] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0054] In order to solve the problem mentioned in the background technology, according to one aspect of an embodiment of the present application, an embodiment of an energy-saving method for a refrigerator is provided.

[0055] Optionally, in the embodiment of the present application, the energy-saving method of the refrigerator can be applied to Figure 1 In the hardware environment composed of refrigerator 101 and server 103 shown in FIG. Figure 1 As shown, the server 103 is connected to the refrigerator 101 via a network and can be used to provide services for the refrigerator. A database 105 can be set on the server or independently of the server to provide data storage services for the server 103. The above network includes but is not limited to: a wide area network, a metropolitan area network or a local area network.

[0056] An embodiment of the present application provides an energy-saving method for a refrigerator, which can be applied to a refrigerator to control the energy-saving operation of the refrigerator.

[0057] The following will describe in detail an energy-saving method for a refrigerator provided by an embodiment of the present application in combination with a specific implementation method. Figure 2 As shown, the specific steps are as follows:

[0058] Step 201: When the actual temperature of the refrigerator compartment reaches the start-up point temperature of the compressor, the temperature difference between the current ambient temperature and the historical ambient temperature is determined.

[0059] In the embodiment of the present application, the refrigerator obtains the actual temperature of the compartment. If the actual temperature of the compartment reaches the start-up point temperature of the refrigerator, indicating that the compartment has a cooling demand, the temperature difference between the current ambient temperature and the historical ambient temperature is determined. The temperature difference is in different temperature ranges, and the subsequent operations are also different, see steps 202 to 203 for details.

[0060] The historical ambient temperature is the average temperature during the historical period, and the current ambient temperature is the average temperature of the ambient temperatures collected multiple times.

[0061] Exemplarily, 24 hours is a large cycle, a large cycle is divided into 24 hours, an hour is a small cycle, and an hour is divided into 60 minutes. The current ambient temperature value is recorded once every minute, and the average ambient temperature value Ts of the small cycle is calculated when a small cycle is full, and the average ambient temperature value Ta of the large cycle is calculated when a large cycle is full. The average ambient temperature value Ta is used as the historical ambient temperature, and the subsequent temperature values ​​are recorded. The refrigerator automatically starts recording data after power is turned on. After the user manually turns on the energy-saving and power-saving switch corresponding to the function and a large cycle is completed, the energy-saving and power-saving measures take effect. The current real-time ambient temperature Tr is sampled 10 times every 6 minutes, and the average Tm is taken as the current ambient temperature after removing the maximum and minimum values. The current ambient temperature Tm is subtracted from the historical ambient temperature Ta to obtain the temperature difference.

[0062] If the actual temperature of the compartment does not reach the start-up point temperature of the refrigerator, it means that there is no cooling demand in the compartment, and the compressor will stop.

[0063] The temperature difference can be in three temperature intervals, namely, the set temperature interval, the intermediate temperature interval and the target temperature interval.

[0064] The temperature in the set temperature interval is lower than the temperature in the middle temperature interval, and the temperature in the middle temperature interval is lower than the temperature in the target temperature interval.

[0065] Step 202: If the temperature difference is within the set temperature range, the frequency of the compressor is increased to accelerate the speed at which the actual temperature of the compartment drops to the shutdown point temperature, thereby shortening the compressor operation time.

[0066] The set temperature interval indicates that the current ambient temperature is lower than the historical ambient temperature, and the temperature in the set temperature interval is lower than the temperature in the middle temperature interval.

[0067] In the embodiment of the present application, if the temperature difference is within the set temperature range, indicating that the current ambient temperature is lower than the historical ambient temperature and has a large difference from the historical ambient temperature, the frequency of the compressor is increased.

[0068] There is heat exchange between two substances at different temperatures, and heat exchange usually takes the form of heat radiation, heat convection, and heat transfer. Normally, the refrigerator transfers the cold to the air in the compartment through the evaporator through the cooperation of the compressor, evaporator, condenser, and throttling device, and the heat is transferred to the metal outer wall of the refrigerator through the condenser (side-cooled and back-cooled evaporators), and the metal outer wall of the refrigerator is then transferred out through natural convection and heat radiation with the surrounding air. Conversely, relative to the low temperature in the refrigerator, the "high temperature" outside will also transfer heat to the inside of the compartment through the foaming layer of the refrigerator, causing the temperature in the compartment to rise. Since it is difficult to achieve an absolute balance between the cooling speed of the compartment and the heating speed of the refrigerator from the outside, the temperature inside the refrigerator compartment fluctuates around the set temperature.

[0069] When the compartment temperature rises to the start-up point, the compressor will start to refrigerate. If you want to lower the compartment temperature, the refrigeration speed must be faster than the heating speed. The speed of refrigeration determines the frequency of the internal temperature fluctuations of the compartment, which involves the start-up rate of the compressor. The faster the refrigeration speed, the lower the compressor start-up rate (compressor start time / power-on time / ).

[0070] When the external ambient temperature is low, the compressor speed is increased to increase the compressor's cooling capacity per unit time. When the external ambient temperature is low, the temperature difference between the interior and the outside of the compartment is relatively small, and it is relatively easy to pull the temperature, so that the refrigerator can be cooled quickly, so that the actual temperature of the compartment can be reduced to the shutdown point temperature at a faster speed, shortening the compressor running time to achieve the purpose of saving electricity.

[0071] Therefore, if the temperature difference is within the set temperature range, it indicates that the external ambient temperature of the refrigerator has decreased, and the temperature difference between the compartment temperature and the external environment has decreased. At this time, it is relatively easy to lower the compartment temperature. In this case, the compressor frequency is increased to allow the refrigerator to cool down quickly, and the actual compartment temperature is reduced to the shutdown point temperature at a faster speed, shortening the compressor operation time to achieve the purpose of saving electricity and energy.

[0072] Step 203: If the temperature difference is within the target temperature range, the frequency of the compressor is reduced to reduce the operating power required to maintain the actual temperature of the compartment below the start-up point temperature, thereby reducing the number of compressor starts and stops during the refrigeration cycle.

[0073] The target temperature interval indicates that the current ambient temperature is greater than the historical ambient temperature, and the temperature in the target temperature interval is higher than the temperature in the intermediate temperature interval.

[0074] When the external ambient temperature is high, the compressor speed is reduced to reduce the compressor's cooling capacity per unit time, and the startup rate is exchanged for the room temperature pulling speed. Otherwise, frequent startup and shutdown of the compressor will cause additional energy loss. In addition, when the external ambient temperature is high, the temperature difference between the inside of the room and the outside is relatively large, and it is relatively difficult to pull the temperature, so that the temperature of the internal compartment of the refrigerator is maintained below the startup point temperature for more time.

[0075] That is, the temperature difference is within the set temperature range, indicating that the external ambient temperature of the refrigerator increases, and the temperature difference between the compartment temperature and the external environment increases. At this time, it is relatively difficult to reduce the compartment temperature. In this case, the compressor frequency is reduced so that the compressor maintains the compartment temperature below the start-up point temperature at a lower operating power, reducing the number of compressor starts and stops during the refrigeration cycle, thereby achieving the purpose of saving electricity and energy.

[0076] The present application finely adjusts the compressor frequency instead of the gear according to the ambient temperature control. When the external ambient temperature is low, the frequency is increased to provide more cooling, and the compartment temperature is lowered to the shutdown point temperature at a faster speed, shortening the compressor operation time to achieve power saving; when the external ambient temperature is high, the frequency is reduced to provide less cooling, so that the compressor maintains the compartment temperature below the startup point temperature with lower operating power, reducing the number of compressor starts and stops during the refrigeration cycle, and achieving power saving. Compared with the prior art, the present application can still play a certain energy-saving role without raising the set temperature of the compartment.

[0077] As an optional implementation, if the temperature difference is in the middle temperature range, when the refrigerator changes gear, the current gear and the adjusted target gear are determined; when the current frequency corresponding to the current gear is adjusted to the target frequency corresponding to the target gear, the speed change rate of the compressor is reduced.

[0078] In an embodiment of the present application, if the temperature difference is in the middle temperature range, indicating that the temperature difference is small, and the current ambient temperature and the historical ambient temperature are slightly different, then the gear is adjusted according to normal circumstances. After adjusting from the current gear to the target gear, the current frequency corresponding to the current gear and the target frequency corresponding to the target gear are different. Compared with the prior art, the speed change rate of the compressor is reduced to avoid the frequency difference between the refrigerator operating gears being too high, resulting in inappropriate operating frequency, and the room temperature changes can be smoothed.

[0079] For example, when Tm is between Ta±3° C., when an upshift or downshift occurs, the compressor approaches the frequency corresponding to the gear at a speed of 30 rpm.

[0080] As an optional implementation method, the set temperature interval includes a first temperature interval and a second temperature interval, and if the temperature difference is within the set temperature interval, increasing the frequency of the compressor includes:

[0081] If the temperature difference is within the first temperature range, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the first preset gear at a first speed change rate, wherein the first preset gear is higher than the current gear;

[0082] For example, when Tm is lower than Ta-5°C and there is a cooling demand in the compartment, the compressor increases at a speed of 60 rpm to a frequency corresponding to the gear position +2 determined by the system.

[0083] If the temperature difference is in the second temperature range, the compressor is controlled to increase the frequency from the current gear to the frequency corresponding to the second preset gear at a second speed change rate, wherein the temperature in the second temperature range is higher than the temperature in the first temperature range, the second speed change rate is smaller than the first speed change rate, and the second preset gear is smaller than the first preset gear and greater than the current gear.

[0084] For example, when Tm is higher than Ta+3°C and not higher than Ta+5°C, when there is a cooling demand in the compartment, the compressor is reduced from 60 rpm to the frequency corresponding to the system determined gear position -2.

[0085] When the current ambient temperature is lower than the historical ambient temperature, as the temperature difference increases, the compressor frequency decreases and the gear to be increased decreases, which can ensure the cooling performance of the air conditioner.

[0086] As an optional implementation method, the target temperature interval includes a third temperature interval and a fourth temperature interval, and if the temperature difference is within the target temperature interval, reducing the frequency of the compressor includes:

[0087] If the temperature difference is within the third temperature range, the compressor is controlled to reduce the frequency corresponding to the current gear to the frequency corresponding to the third preset gear at a third speed change rate, wherein the third preset gear is lower than the current gear.

[0088] When Tm is higher than Ta+3℃ and not higher than Ta+5℃, the compartment has a cooling demand, and the compressor is reduced from 60rpm to the frequency corresponding to the system determined gear -2.

[0089] If the temperature difference is in the fourth temperature range, the compressor is controlled to reduce the frequency corresponding to the current gear to the frequency corresponding to the fourth preset gear at a fourth speed change rate, wherein the temperature in the fourth temperature range is higher than the temperature in the third temperature range, the fourth speed change rate is lower than the third speed change rate, and the fourth preset gear is greater than the third preset gear and lower than the current gear.

[0090] When Tm is higher than Ta+5℃, when there is a cooling demand in the compartment, the compressor is reduced at a speed of 30rpm to the frequency corresponding to the system determined gear -1.

[0091] When the current ambient temperature is higher than the historical ambient temperature, as the temperature difference increases, the compressor frequency decreases and the gear to be reduced increases, which can ensure the cooling performance of the air conditioner.

[0092] As an optional implementation method, before controlling the compressor to adjust the speed, the method also includes: controlling the compressor to run at a preset speed for a preset time; if a gear change occurs when running at the preset speed, re-running at the speed corresponding to the changed gear for the preset time.

[0093] When there is a cooling demand in the room, the air conditioner first controls the compressor to run at a preset speed for a preset time to avoid changing the frequency as soon as the compressor is turned on. If the gear changes when the compressor is running at the preset speed, it will run again at the preset speed for the preset time.

[0094] When the user opens the door for too long, loads the heat load, forgets to close the door, the compressor runs for longer and longer, the air conditioner is turned on at home causing the ambient temperature to change, etc., the gear position will change. Due to the above factors, the compressor gear position is re-determined, and it is necessary to respond to these gear requirements first, otherwise the cooling effect will be compromised, so the gear position will change. For example, if the gear position is adjusted once every 10 minutes of normal operation, if the compressor has been continuously running for too long at the 9th minute and has been raised to a gear once, it will be raised to a gear again after 1 minute if the time is not cleared. Due to the high gear position and excessive cooling capacity per unit time, the room temperature will drop rapidly and over-cooling will occur, which is not conducive to fine temperature control. Therefore, it is necessary to reset the 10 minutes of operation (the same applies to the following 20 minutes and 30 minutes) and re-time.

[0095] Optionally, controlling the compressor to operate at a preset speed for a preset time period includes:

[0096] If the temperature difference is in the third temperature range, the compressor is controlled to run at a preset speed for a first time period; if the temperature difference is in the fourth temperature range, the compressor is controlled to run at a preset speed for a second time period, wherein the second time period is greater than the first time period.

[0097] For example, when Tm is higher than Ta+3℃ and not higher than Ta+5℃, there is a cooling demand in the compartment, and the compressor first runs at the system-determined speed for 20 minutes, and the timing is restarted when the gear changes. When Tm is higher than Ta+5℃, there is a cooling demand in the compartment, and the compressor first runs at the system-determined speed for 30 minutes, and the timing is restarted when the gear changes.

[0098] Optionally, the embodiment of the present application also provides a processing flow for energy saving of a refrigerator, and the specific steps are as follows.

[0099] ①When Tm is lower than Ta-5℃: When there is a cooling demand in the compartment, the compressor first runs at the speed determined by the system for 10 minutes, restarts the timing when the gear changes, and then increases at a speed of 60rpm (Revolutions Per minute, revolutions per minute) to the frequency corresponding to the gear determined by the system + 2. When there is no cooling demand in the compartment, the compressor stops.

[0100] ②When Tm is lower than Ta-3℃ and not lower than Ta-5℃: When there is a cooling demand in the compartment, the compressor will first run at the system-determined speed for 10 minutes, restart the timing when the gear changes, and then increase the speed to the frequency corresponding to the system-determined gear + 1 at 30rpm. When there is no cooling demand in the compartment, the compressor stops.

[0101] ③When Tm is higher than Ta+3℃ and not higher than Ta+5℃: When there is a cooling demand in the compartment, the compressor will first run at the system-determined speed for 20 minutes, restart the timing when the gear changes, and then reduce the speed to the frequency corresponding to the system-determined gear-2 at 60rpm. When there is no cooling demand in the compartment, the compressor stops.

[0102] ④When Tm is higher than Ta+5℃: When there is a cooling demand in the compartment, the compressor will first run at the speed determined by the system for 30 minutes, restart the timing when the gear changes, and then reduce the speed by 30rpm to the frequency corresponding to the gear determined by the system -1. When there is no cooling demand in the compartment, the compressor stops.

[0103] ⑤When Tm is between Ta±3℃, the compressor gear is controlled according to normal judgment. When the gear is raised or lowered, the compressor approaches the frequency corresponding to the gear judged by the system at a speed of 30rpm.

[0104] Based on the same technical concept, the embodiment of the present application also provides an energy-saving device for a refrigerator, such as Figure 3 As shown, the device comprises:

[0105] A determination module 301 is used for determining a temperature difference between a current ambient temperature and a historical ambient temperature when the actual temperature of the refrigerator compartment reaches the start-up point temperature of the compressor;

[0106] The increasing module 302 is used to increase the frequency of the compressor if the temperature difference is within the set temperature interval, so as to accelerate the speed at which the actual temperature of the compartment drops to the shutdown point temperature and shorten the compressor operation time, wherein the set temperature interval indicates that the current ambient temperature is lower than the historical ambient temperature, and the temperature of the set temperature interval is lower than the temperature of the intermediate temperature interval;

[0107] The reducing module 303 is used to reduce the compressor if the temperature difference is within the target temperature range.

[0108] frequency to reduce the actual room temperature to maintain the operating power below the start-up point temperature, reduce the number of compressor starts and stops during the refrigeration cycle, where the target temperature range indicates the current environment

[0109] The ambient temperature is greater than the historical ambient temperature, and the temperature in the target temperature range is higher than the temperature in the middle temperature range.

[0110] Optionally, the set temperature interval includes a first temperature interval and a second temperature interval, and the

[0111] Module 302 is used to:

[0112] 0 If the temperature difference is within the first temperature range, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the first preset gear at a first speed change rate, wherein the first preset gear is higher than the current gear;

[0113] If the temperature difference is in the second temperature interval, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the second preset gear at the second speed change rate, wherein the temperature in the second temperature interval is higher than the temperature in the first temperature interval, and the second speed change rate is less than the first temperature interval.

[0114] A speed change rate, the second preset gear is less than the first preset gear and greater than the current gear.

[0115] Optionally, the target temperature interval includes a third temperature interval and a fourth temperature interval, and the reducing module 303 is used to:

[0116] If the temperature difference is within the third temperature range, the compressor is controlled to decrease from the frequency of 0 corresponding to the current gear to the frequency corresponding to the third preset gear at a third speed change rate, wherein the first

[0117] The third preset gear is lower than the current gear;

[0118] If the temperature difference is within the fourth temperature range, the compressor is controlled to reduce the frequency corresponding to the current gear to the frequency corresponding to the fourth preset gear at a fourth speed change rate, wherein the fourth speed change rate is

[0119] The temperature in the fourth temperature interval is higher than the temperature in the third temperature interval, the fourth speed change rate is lower than the fifth third speed change rate, and the fourth preset gear is greater than the third preset gear and lower than the current gear.

[0120] Optionally, the device is also used for:

[0121] Control the compressor to run at a preset speed for a preset time;

[0122] If a gear change occurs while running at the preset speed, the machine will run again at the preset speed for the preset time.

[0123] Optionally, the device is also used for:

[0124] If the temperature difference is within the third temperature range, controlling the compressor to run at a preset speed for a first time period;

[0125] If the temperature difference is within a fourth temperature interval, the compressor is controlled to run at a preset speed for a second time period, wherein the second time period is greater than the first time period.

[0126] Optionally, the device is also used for:

[0127] If the temperature difference is in the middle temperature range, when the refrigerator changes gear, the current gear and the adjusted target gear are determined;

[0128] When the current frequency corresponding to the current gear is adjusted to the target frequency corresponding to the target gear, the speed change rate of the compressor is reduced.

[0129] Optionally, the determination module 301:

[0130] The average temperature during the historical period is taken as the historical ambient temperature;

[0131] Collect the ambient temperature once every preset period;

[0132] The current ambient temperature is obtained by taking the average of the collected ambient temperatures.

[0133] According to another aspect of the embodiments of the present application, the present application provides an electronic device, such as Figure 4 As shown, it includes a memory 403, a processor 401, a communication interface 402 and a communication bus 404. The memory 403 stores a computer program that can be run on the processor 401. The memory 403 and the processor 401 communicate through the communication interface 402 and the communication bus 404. When the processor 401 executes the computer program, the steps of the above method are implemented.

[0134] The memory and processor in the above electronic device communicate via a communication bus and a communication interface. The communication bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus may be divided into an address bus, a data bus, a control bus, etc.

[0135] The memory 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.

[0136] The above-mentioned processor 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 gate or transistor logic devices, discrete hardware components.

[0137] According to another aspect of the embodiments of the present application, a computer-readable medium having a non-volatile program code executable by a processor is provided.

[0138] Optionally, in an embodiment of the present application, a computer-readable medium is configured to store program code for the processor to execute the above method.

[0139] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0140] When the embodiments of the present application are specifically implemented, reference may be made to the above-mentioned embodiments, which have corresponding technical effects.

[0141] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

[0142] For software implementation, the technology described herein can be implemented by a unit that performs the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0143] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0144] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0145] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0146] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0147] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0148] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk. 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 that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0149] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A refrigerator energy saving method, characterized in that: The method comprises: When the actual temperature of the refrigerator compartment reaches the start-up point temperature of the compressor, the temperature difference between the current ambient temperature and the historical ambient temperature is determined; If the temperature difference is within a set temperature interval, the frequency of the compressor is increased to accelerate the speed at which the actual temperature of the compartment drops to the shutdown point temperature and shorten the compressor operation time, wherein the set temperature interval indicates that the current ambient temperature is lower than the historical ambient temperature, and the temperature of the set temperature interval is lower than the temperature of the intermediate temperature interval; If the temperature difference is within the target temperature range, the frequency of the compressor is reduced to reduce the operating power to maintain the actual temperature of the compartment below the start-up point temperature, and reduce the number of compressor starts and stops during the refrigeration cycle, wherein the target temperature range indicates that the current ambient temperature is greater than the historical ambient temperature, and the temperature of the target temperature range is higher than the temperature of the intermediate temperature range; The set temperature interval includes a first temperature interval and a second temperature interval, and if the temperature difference is within the set temperature interval, increasing the frequency of the compressor includes: If the temperature difference is within the first temperature range, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the first preset gear at a first speed change rate, wherein the first preset gear is higher than the current gear; If the temperature difference is in the second temperature range, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the second preset gear at a second speed change rate, wherein the temperature in the second temperature range is higher than the temperature in the first temperature range, the second speed change rate is smaller than the first speed change rate, and the second preset gear is smaller than the first preset gear and greater than the current gear.

2. The method according to claim 1, characterized in that The target temperature interval includes a third temperature interval and a fourth temperature interval. If the temperature difference is within the target temperature interval, reducing the frequency of the compressor includes: If the temperature difference is within the third temperature range, the compressor is controlled to decrease from the frequency corresponding to the current gear to the frequency corresponding to the third preset gear at a third speed change rate, wherein the third preset gear is lower than the current gear; If the temperature difference is in the fourth temperature range, the compressor is controlled to reduce the frequency corresponding to the current gear to the frequency corresponding to the fourth preset gear at a fourth speed change rate, wherein the temperature of the fourth temperature range is higher than the temperature of the third temperature range, the fourth speed change rate is lower than the third speed change rate, and the fourth preset gear is greater than the third preset gear and lower than the current gear.

3. The method according to claim 1 or 2, characterized in that: Before controlling the compressor to adjust the frequency, the method further includes: Controlling the compressor to run at a preset speed for a preset time; If a gear change occurs when the vehicle is running at the preset speed, the vehicle is re-run at the preset speed for the preset time period.

4. The method according to claim 3, characterized in that: Controlling the compressor to operate at a preset speed for a preset time period includes: If the temperature difference is within a third temperature range, controlling the compressor to run at a preset speed for a first time period; If the temperature difference is within a fourth temperature interval, the compressor is controlled to run at a preset speed for a second time period, wherein the second time period is greater than the first time period.

5. The method according to claim 1, characterized in that After determining the temperature difference between the current ambient temperature and the historical ambient temperature, the method further includes: If the temperature difference is within the intermediate temperature range, when the refrigerator changes gear, the current gear and the adjusted target gear are determined; When the current frequency corresponding to the current gear is adjusted to the target frequency corresponding to the target gear, the speed change rate of the compressor is reduced.

6. The method according to claim 1, characterized in that The method further comprises: when the compartment has no refrigeration demand, controlling the compressor to stop.

7. The method according to claim 1, characterized in that Determining the temperature difference between the current ambient temperature and the historical ambient temperature includes: The average temperature in the historical period is taken as the historical ambient temperature; Collect the ambient temperature once every preset period; The current ambient temperature is obtained by taking an average of the collected ambient temperatures.

8. An energy-saving device for a refrigerator, characterized in that: The device comprises: A determination module, used to determine the temperature difference between the current ambient temperature and the historical ambient temperature when the actual temperature of the refrigerator compartment reaches the start-up point temperature of the compressor; An increasing module, for increasing the frequency of the compressor if the temperature difference is within a set temperature interval, so as to accelerate the speed at which the actual temperature of the compartment drops to the shutdown point temperature and shorten the compressor operation time, wherein the set temperature interval indicates that the current ambient temperature is less than the historical ambient temperature, and the temperature of the set temperature interval is lower than the temperature of the intermediate temperature interval; A reduction module, for reducing the frequency of the compressor if the temperature difference is within a target temperature interval, so as to reduce the operating power to maintain the actual temperature of the compartment below the start-up point temperature, and reduce the number of compressor starts and stops during the refrigeration cycle, wherein the target temperature interval indicates that the current ambient temperature is greater than the historical ambient temperature, and the temperature of the target temperature interval is higher than the temperature of the intermediate temperature interval; Wherein, the set temperature interval includes a first temperature interval and a second temperature interval. If the temperature difference is within the set temperature interval, the improvement module is used to: If the temperature difference is within the first temperature range, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the first preset gear at a first speed change rate, wherein the first preset gear is higher than the current gear; If the temperature difference is in the second temperature range, the compressor is controlled to increase from the frequency corresponding to the current gear to the frequency corresponding to the second preset gear at a second speed change rate, wherein the temperature in the second temperature range is higher than the temperature in the first temperature range, the second speed change rate is smaller than the first speed change rate, and the second preset gear is smaller than the first preset gear and greater than the current gear.

9. An electronic 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; A processor, for implementing the method steps described in any one of claims 1 to 7 when executing a program stored in a memory.

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

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