Control method of refrigerator and refrigerator

Abstract

The application provides a control method of a refrigerator and the refrigerator. The refrigerator comprises a compressor. The control method comprises the following steps: after receiving a start instruction of the compressor, obtaining a running time of the last operation of the compressor; obtaining an accumulated downtime of the compressor after the last power-on or defrosting of the refrigerator; determining a second running frequency of the current operation of the compressor according to a first running frequency of the last operation of the compressor, the accumulated downtime and the running time; and controlling the compressor to start and run at the second running frequency. The control method adjusts the running frequency of the start of the compressor, can ensure that the compressor runs at the optimal frequency, achieves the optimal matching with the heat load of the cabinet, thereby reducing the energy consumption of the whole machine and improving the energy efficiency of the product.

Description

Technical Field

[0001] This application belongs to the field of refrigerator technology, and in particular relates to a refrigerator control method and a refrigerator. Background Technology

[0002] Current inverter control methods for refrigerators typically set several commonly used compressor speed levels. If the compressor runs for a certain duration without stopping, the compressor speed is increased by one level. This control rule only ensures that the compressor can provide sufficient cooling to the refrigerator compartments under various usage conditions, but it cannot guarantee that the refrigerator will have a better energy consumption level under all usage conditions. Summary of the Invention

[0003] This application provides a refrigerator door hinge assembly and a refrigerator, which can solve the problem of how to improve the energy efficiency of a refrigerator.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A method for controlling a refrigerator, the refrigerator including a compressor, the method comprising:

[0006] After receiving the compressor start command, obtain the runtime of the compressor's last operation;

[0007] The cumulative downtime of the compressor after the refrigerator was last powered on or defrosted is obtained;

[0008] The second operating frequency of the compressor for this operation is determined based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time.

[0009] The compressor is controlled to start and operate at the second operating frequency.

[0010] In some embodiments, determining the second operating frequency of the compressor for the current operation based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time includes:

[0011] If the running time is less than or equal to a first preset multiple of the cumulative downtime, then a frequency less than the first running frequency is determined as the second running frequency;

[0012] If the runtime is greater than a first preset multiple of the cumulative downtime, then a frequency greater than or equal to the first operating frequency is determined as the second operating frequency.

[0013] In some embodiments, after determining that the runtime is less than or equal to a first preset multiple of the cumulative downtime, the method further includes:

[0014] Determine whether the first operating frequency is equal to the preset minimum operating frequency;

[0015] If the first operating frequency is equal to the preset minimum operating frequency, then the second operating frequency is determined to be equal to the first operating frequency;

[0016] If the first operating frequency is greater than the preset minimum operating frequency, then a frequency less than the first operating frequency is determined as the second operating frequency.

[0017] In some embodiments, the second operating frequency is determined according to the following formula:

[0018] F2 = F1 - f0, where F2 represents the second operating frequency, F1 represents the first operating frequency, and f0 represents the first preset frequency.

[0019] In some embodiments, determining a frequency greater than or equal to the first operating frequency as the second operating frequency if the runtime is greater than a first preset multiple of the cumulative downtime includes:

[0020] If the runtime is greater than a first preset multiple of the cumulative downtime and less than or equal to a second preset multiple of the cumulative downtime, then the second running frequency is determined to be equal to the first running frequency, and the second preset multiple is greater than the first preset multiple.

[0021] If the runtime is greater than a second preset multiple of the cumulative downtime, then a frequency greater than the first running frequency is determined as the second running frequency.

[0022] In some embodiments, the second operating frequency is determined according to the following formula:

[0023] Where F2 represents the second operating frequency, T1 represents the first operating frequency, and f h This indicates the preset maximum operating frequency.

[0024] In some embodiments, after receiving the compressor start command, the method further includes:

[0025] Determine whether the compressor is being turned on for the first time after the refrigerator has been powered on or defrosted;

[0026] If the compressor is being turned on for the first time after the refrigerator is powered on or defrosted, then the compressor is controlled to run at a preset maximum operating frequency.

[0027] In some embodiments, after receiving the compressor start command, the method further includes:

[0028] Determine whether the compressor is the second time the refrigerator has been turned on after being powered on or defrosted;

[0029] If the compressor is the second time the refrigerator has been powered on or defrosted, then the ambient temperature is obtained;

[0030] The third operating frequency is determined based on the ambient temperature and a preset parameter library, which includes a one-to-one correspondence between multiple ambient temperature ranges and multiple compressor operating frequencies.

[0031] The compressor is controlled to start and operate at the third operating frequency.

[0032] In some embodiments, after controlling the compressor to start operating at the third operating frequency, the method further includes:

[0033] The first duration for which the compressor operates at the third operating frequency is obtained;

[0034] If no compressor shutdown command is received after the first time exceeds the preset time, the operating frequency of the compressor is adjusted to the preset maximum operating frequency.

[0035] A refrigerator, comprising:

[0036] compressor;

[0037] The controller, connected to the compressor, is used for:

[0038] After receiving the compressor start command, obtain the runtime of the compressor's last operation;

[0039] The cumulative downtime of the compressor after the refrigerator was last powered on or defrosted is obtained;

[0040] The second operating frequency of the compressor for this operation is determined based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time.

[0041] The compressor is controlled to start and operate at the second operating frequency.

[0042] The refrigerator control method and refrigerator provided in this application adjust the operating frequency of the compressor during the current start-up based on the first operating frequency of the compressor during its last operation, the cumulative downtime of the compressor, and the operating time of the compressor during its last operation. This ensures that the compressor operates at the optimal frequency and achieves the best match with the heat load of the cabinet, thereby reducing the overall energy consumption and improving the energy efficiency of the product. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0044] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0045] Figure 1 A flowchart of a refrigerator refrigeration method provided in an embodiment of this application.

[0046] Figure 2 This is a first flowchart of a refrigerator control method provided in an embodiment of this application.

[0047] Figure 3 This is a second flowchart of a refrigerator control method provided in an embodiment of this application.

[0048] Figure 4 This is a schematic diagram of a first structure of a refrigerator provided in an embodiment of this application.

[0049] Figure 5 This is a schematic diagram of a second structure of a refrigerator provided in an embodiment of this application.

[0050] Figure 6 This is a schematic diagram of a third structure of a refrigerator provided in an embodiment of this application. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0052] Existing single-system, multi-temperature-controlled air-cooled refrigerators generally follow the following cooling rules: when the freezer temperature reaches the start-up point, the compressor and fan are turned on; when the refrigerator temperature reaches the start-up point, the fan and refrigerator damper are opened; when the refrigerator temperature reaches the stop-up point, the refrigerator damper is closed; when the freezer temperature reaches the stop-up point, and the refrigerator temperature has reached the stop-up point at least once and is lower than the start-up point temperature, the compressor and fan are turned off. Understandably, under this rule, the cooling cycles of the refrigerator and freezer compartments are likely not synchronized, and the random coupling of the start-up of cooling in each compartment may result in the refrigerator's energy consumption not being at its highest. Experiments have revealed that if the refrigerator cooling starts first during the compressor stop-up phase, energy consumption can increase by about 5%. Furthermore, a slight delay in the start-up of the refrigerator cooling results in a longer compressor operating time at the same speed, further increasing energy consumption. If the refrigerator and freezer start simultaneously, the compressor's energy consumption is optimal.

[0053] To address the aforementioned problems, this application provides a refrigeration method for a refrigerator. For an example, please refer to [link to example]. Figure 1 , Figure 1 A flowchart illustrating a refrigeration method for a refrigerator provided in this application embodiment. The refrigeration method is executed, for example, by a refrigerator controller, and includes the following steps S101-S109:

[0054] Step S101: After the refrigerator is powered on, determine the temperature LC of the refrigerator compartment. c Is it greater than or equal to the refrigerator compartment's start-up temperature T? con ;

[0055] Initially, neither the refrigerator compartment nor the freezer compartment is cooling. Understandably, if the compartment's cooling mode is activated, the compartment temperature will gradually decrease; if the compartment's cooling mode is deactivated, the refrigerator compartment temperature may gradually increase.

[0056] It should be noted that the refrigerator compartment temperature LC c A value greater than or equal to the refrigerator compartment's start-up temperature indicates that the refrigerator compartment needs to be switched on in cooling mode to lower its temperature. Correspondingly, the refrigerator compartment temperature (LC) is... c Lowering the temperature to the refrigerator compartment's shutdown point means that the refrigerator compartment no longer needs to cool, and at this point, the refrigerator compartment's cooling can be turned off.

[0057] The start / stop temperature of the refrigerator compartment is calculated by the controller based on the ambient temperature and a corresponding preset formula. For example, the start-up temperature t of the refrigerator compartment... con It is 5°C higher than the temperature at which the refrigerator is turned off.

[0058] If the temperature of the refrigerator compartment is LC c The refrigerator compartment has reached its start-up temperature T. con Then proceed with step S103: Refrigerator compartment temperature LC cThe refrigerator compartment's start-up temperature T has not been reached. con Then proceed with step S102.

[0059] Step S102: Determine the freezer compartment temperature LD c Is it greater than or equal to the freezer compartment start-up temperature T? don ;

[0060] Similarly, freezer temperature LD c A temperature greater than or equal to the freezer compartment's start-up temperature indicates that the freezer compartment needs to be switched on in cooling mode to lower its temperature. Correspondingly, the freezer compartment temperature LD... c Lowering the temperature to the freezer compartment's shutdown point indicates that the freezer compartment no longer needs to cool, and at this point, the freezer compartment cooling can be turned off.

[0061] If the freezer temperature LD c The freezer compartment has reached its start-up temperature T. don Then proceed with step S103: Freezer temperature LD c The freezer compartment's start-up temperature T has not been reached. don Then return to step S101 above.

[0062] That's understandable; you can also first determine the freezer compartment temperature (LD). c Then determine the temperature of the refrigerator compartment (LC). c Alternatively, both can be used to determine the temperature. If the temperature of any compartment reaches its corresponding start-up temperature, the refrigerator's cooling mode will be activated.

[0063] Step S103: Control the refrigerator compartment and freezer compartment to turn on the cooling mode;

[0064] For example, the refrigerator may also include a refrigeration system, which includes a compressor and an evaporator. The evaporator is disposed in the refrigerator's freezer duct, which communicates with the freezer compartment. A refrigerator damper is provided between the freezer duct and the refrigerator compartment. When the refrigerator damper is open, the freezer duct is connected to the refrigerator compartment. A fan may also be provided within the freezer duct. When the compressor operates, the evaporator cools the air within the freezer duct, and the refrigerator and freezer compartments cool the items inside by air convection with the freezer duct. Therefore, the refrigerator and freezer compartments can be put into refrigeration mode by controlling the compressor to start, the fan to start, and the refrigerator damper to open.

[0065] Step S104: Determine the temperature LC of the refrigerator compartment c Is it less than or equal to the refrigerator compartment shutdown temperature T? coff ;

[0066] If the temperature of the refrigerator compartment is LC c Less than or equal to the refrigerator compartment shutdown temperature T coffIf the condition is met, proceed to step S105; otherwise, return to step S104.

[0067] Step S105: Control the refrigerator compartment to stop cooling;

[0068] For example, the refrigerator controller may control the refrigerator door to close, thus preventing air convection between the freezer duct and the refrigerator compartment and shutting off the cooling of the refrigerator compartment.

[0069] Step S106: Determine the freezer compartment temperature LD c Is it less than or equal to the freezer compartment shutdown temperature T? doff ;

[0070] If the freezer temperature LD c Less than or equal to the freezer compartment shutdown temperature T doff If the condition is met, proceed to step S109; otherwise, proceed to steps S107-S108.

[0071] Step S107: Determine the temperature LC of the refrigerator compartment c Is it greater than or equal to the refrigerator compartment reopening temperature T? coff ′;

[0072] Among them, the cold storage compartment reopening temperature T coff For example, temperatures higher than the refrigerator compartment's shutdown temperature T. coff And below the refrigerator compartment's start-up temperature T con For example, the refrigerator compartment reopening point temperature T coff ′Compared to the refrigerator compartment shutdown temperature T coff 4°C higher.

[0073] If the temperature of the refrigerator compartment is LC c Greater than or equal to the refrigerator compartment reopening temperature T coff If the condition is met, proceed to step S109; otherwise, return to step S106.

[0074] Step S108: Restart the refrigerator compartment cooling;

[0075] It is understood that the refrigerator cooling method provided in this application embodiment, by adding steps S107 and S108, can ensure that if the temperature of the refrigerator compartment rises too much due to reasons such as opening the door, excessive ambient temperature, or excessively long cooling time of the freezer compartment during the stage of cooling the freezer compartment alone, the cooling of the refrigerator compartment will be restarted to ensure that the temperature of the refrigerator compartment is relatively stable. It can also avoid the problem of the compressor being unable to stop and the power consumption increasing when the cooling of the freezer compartment is turned off and then restarted due to excessively high temperature of the refrigerator compartment.

[0076] Step S109: Control the freezer compartment to stop cooling.

[0077] For example, the refrigerator's controller may control the compressor and fan to stop, thereby stopping the cooling of the freezer compartment.

[0078] The refrigeration method for a refrigerator provided in this application embodiment can ensure that the refrigerator compartment and the freezer compartment are refrigerated simultaneously, thereby improving the energy consumption level of the compressor.

[0079] This application embodiment also provides a refrigerator compartment start-up temperature T. con Freezer start-up temperature T don Refrigerator compartment shutdown temperature T coff Freezer compartment shutdown temperature T doff The calculation rules and specific formulas are as follows:

[0080] Among them, T d1 The preset temperature value is related to the ambient temperature, and dh represents the freezer compartment offset parameter.

[0081] Among them, T d2 The preset temperature value is related to the ambient temperature. d8 represents the freezer temperature fluctuation control parameter, for example, 4.

[0082] Among them, T c1 The preset temperature value is related to the ambient temperature, and ch represents the refrigerator compartment offset parameter.

[0083] T con =T coff +Δh, where Δh is a preset temperature value, for example, 5.

[0084] In the above calculation formula, dh and ch can be obtained, for example, through the refrigerator's dual octave display panel. dh and ch are rounded to integers and adjusted to a control precision of 0.5℃ by dividing by 2. dh and ch can correct for the effects of ambient temperature and sensor temperature deviation. The values ​​are different for different ambient temperature ranges (see Tables 1 and 2 below for details) to correct the consistency between the set setting and the compartment temperature.

[0085] Table 1: Reference Table for Freezer Compartment Offset Parameter dh

[0086] Ambient temperature dh Settable range ＜8℃ d1 -30～30 8-13℃ d2 -30～30 13-20℃ d3 -30～30 20-28℃ d4 -30～30 28-35℃ d5 -30～30 35-40℃ d6 -30～30 ≥40℃ d7 -30～30

[0087] Table 2 Reference Table for Refrigerator Compartment Offset Parameter ch

[0088]

[0089]

[0090] Furthermore, the freezer compartment start-up temperature T donand the freezer compartment shutdown temperature T doff For example, refer to Table 3 below for calculations:

[0091] Table 3 Freezer compartment start-up temperature T don Freezer compartment shutdown temperature T doff Calculation Reference Table

[0092] Setting gear [CAT don ]]> <![CDATA[T doff ]]> -15 -15+dh / 2 -17+dh / 2-Δ1 / 2 -16 -16+dh / 2 -18+dh / 2-Δ1 / 2 -17 -17+dh / 2 -19+dh / 2-Δ1 / 2 -18 -18+dh / 2 -20+dh / 2-Δ1 / 2 -19 -19+dh / 2 -21+dh / 2-Δ1 / 2 -20 -20+dh / 2 -22+dh / 2-Δ1 / 2 -21 -21+dh / 2 -23+dh / 2-Δ1 / 2 -22 -22+dh / 2 -24+dh / 2-Δ1 / 2 -23 -23+dh / 2 -25+dh / 2-Δ1 / 2 -24 -24+dh / 2 -26+dh / 2-Δ1 / 2

[0093] Refrigerator compartment shutdown temperature T coff For example, refer to Table 4 below for calculations:

[0094] Table 4: Refrigerator compartment shutdown temperature (T) coff Calculation Reference Table

[0095]

[0096]

[0097] Based on the aforementioned refrigerator refrigeration method, this application also provides a refrigerator control method that can adjust the refrigerator compressor to operate at the optimal frequency, achieving optimal matching with the refrigerator's heat load, thereby reducing overall energy consumption and improving the product's energy efficiency. For an example, please refer to... Figure 2 , Figure 2 A first flowchart of a refrigerator control method provided in an embodiment of this application. The refrigerator control method is executed, for example, by the refrigerator's controller, and includes the following steps S201-S204:

[0098] Step S201: After receiving the compressor start command, obtain the runtime of the compressor's last operation;

[0099] It should be noted that the runtime of the compressor's last operation refers to the time elapsed from the last time the compressor was turned on to the last time it was turned off.

[0100] Step S202: Obtain the cumulative downtime of the compressor since the refrigerator was last powered on or defrosted;

[0101] The cumulative compressor downtime refers to the total duration of each compressor downtime since the refrigerator was last powered on or defrosted.

[0102] Step S203: Determine the second operating frequency of the compressor for this operation based on the first operating frequency of the compressor's previous operation, the cumulative downtime mentioned above, and the operating time mentioned above;

[0103] Step S204: Control the compressor to start running at the second operating frequency.

[0104] Understandably, the cumulative downtime of the compressor and the duration of its last operation reflect changes in the refrigerator's heat load. Adjusting the compressor's operating frequency based on its last operating frequency, cumulative downtime, and duration of operation ensures optimal compressor frequency operation, achieving the best match with the refrigerator's heat load, thereby reducing overall energy consumption and improving the product's energy efficiency.

[0105] For further details, please refer to Figure 3 , Figure 3 A second flowchart of a refrigerator control method provided in an embodiment of this application. The control method includes the following steps S301-S317:

[0106] Step S301: Receive compressor start command;

[0107] Understandably, the refrigerator's controller responds to the compressor's start-up command and controls the compressor to start.

[0108] Step S302: Determine whether the compressor is being turned on for the first time after the refrigerator has been powered on or defrosted;

[0109] If the compressor is being turned on for the first time after the refrigerator is powered on or defrosted, proceed to step S303 below; if the compressor is not being turned on for the first time after the refrigerator is powered on or defrosted, proceed to step S304 below.

[0110] Step S303: Control the compressor to start and run at the preset maximum operating frequency;

[0111] The preset maximum operating frequency is, for example, 150Hz.

[0112] Step S304: Determine whether the compressor is being turned on for the second time after the refrigerator has been powered on or defrosted;

[0113] If the compressor is the second time the refrigerator has been powered on or defrosted, then proceed with steps S305-S308 below; if the compressor is not the second time the refrigerator has been powered on or defrosted, then proceed with steps S309-S317 below.

[0114] Step S305: Obtain the ambient temperature;

[0115] For example, a refrigerator is equipped with a temperature sensor for collecting ambient temperature data. The refrigerator's controller is connected to the temperature sensor and is used to collect the voltage output by the temperature sensor to determine the ambient temperature.

[0116] Step S306: Control the compressor to start and run at the third operating frequency according to the ambient temperature;

[0117] For example, the controller has a pre-stored preset parameter library, which includes a one-to-one correspondence between multiple ambient temperature ranges and multiple compressor operating frequencies. The controller can obtain the corresponding third operating frequency by matching the collected actual ambient temperature with the preset parameter library.

[0118] Step S307: Determine whether the first duration of the compressor operating at the third operating frequency exceeds the preset duration;

[0119] For example, the preset duration can be a preset value or a preset multiple of the compressor's cumulative downtime, such as 9 times the compressor's cumulative downtime.

[0120] If the compressor operates at the third operating frequency for a first duration exceeding the preset duration, then proceed to step S308; otherwise, return to step S306.

[0121] Step S308: Adjust the compressor's operating frequency to the preset maximum operating frequency.

[0122] Understandably, if the compressor runs at the third operating frequency and the first operating time exceeds the preset time, and the controller still fails to receive the compressor stop command, it indicates that the refrigerator may be experiencing a high heat load, causing the compressor frequency to be insufficient. Consequently, the refrigerator's storage compartments may not reach the preset stop temperature for an extended period. Therefore, adjusting the compressor's operating frequency to the highest level can achieve rapid cooling and ensure the storage effect of each compartment.

[0123] Step S309: Obtain the runtime t0 of the compressor's last operation;

[0124] Step S310: Obtain the cumulative downtime t1 of the compressor since the last time the refrigerator was powered on or defrosted;

[0125] Step S311: Obtain the first operating frequency of the compressor during its last operation;

[0126] Step S312: Determine whether the running time t0 is less than or equal to the first preset multiple of the cumulative downtime t1;

[0127] For example, the first preset multiple is 6. If the running time t0 is less than or equal to the first preset multiple of the cumulative downtime t1, then step S313 is executed; otherwise, step S314 is executed.

[0128] Step S313: Determine the frequency less than the first operating frequency as the second operating frequency for this compressor start-up;

[0129] For example, the second operating frequency can be determined according to the formula F2 = F1 - f0, where F2 represents the second operating frequency, F1 represents the first operating frequency, and f0 represents the first preset frequency. f0 is, for example, equal to 4 Hz.

[0130] It is understandable that the compressor's previous running time t0 was short, indicating that the refrigerator's heat load was relatively low. Therefore, the frequency of the compressor's operation can be appropriately reduced to better match the compressor's operating frequency with the refrigerator's heat load and improve the refrigerator's energy efficiency.

[0131] In some embodiments, after determining that the runtime t0 is less than or equal to a first preset multiple of the cumulative downtime t1, the method further includes:

[0132] Determine whether the first operating frequency is equal to the preset minimum operating frequency;

[0133] If the first operating frequency is equal to the preset minimum operating frequency, then the second operating frequency is determined to be equal to the first operating frequency.

[0134] Understandably, if the compressor's operating frequency was already at its lowest level during the last operation, it cannot be lowered further this time. Therefore, the compressor can be controlled to continue operating at the lowest operating frequency this time.

[0135] Step S314: Determine whether the running time t0 is greater than or equal to the second preset multiple of the cumulative downtime t1;

[0136] It should be noted that the second preset multiple is greater than the first preset multiple, and the second preset multiple is, for example, equal to 9. If the running time t0 is greater than or equal to the second preset multiple of the cumulative downtime t1, then step S315 is executed; otherwise, step S316 is executed.

[0137] Step S315: Determine a frequency greater than the first operating frequency as the second operating frequency;

[0138] For example, it can be based on the formula Determine the second operating frequency, where F2 represents the second operating frequency, F1 represents the first operating frequency, and f h This indicates the preset maximum operating frequency. h For example, it equals 150Hz.

[0139] In some other embodiments, the second operating frequency can also be determined according to the formula F2 = F1 + f0′, where F2 represents the second operating frequency, F1 represents the first operating frequency, and f0′ is the second preset frequency, which can be selected from 1Hz to 20Hz.

[0140] It is understandable that if the compressor's last run time t0 was too long, it indicates that the refrigerator's heat load is relatively high. Therefore, the frequency of the compressor's operation can be appropriately increased to better match the compressor's operating frequency with the refrigerator's heat load and improve the refrigerator's energy efficiency.

[0141] Step S316: Determine that the second operating frequency is equal to the first operating frequency;

[0142] If the compressor's previous operating time t0 is between the first preset multiple of the cumulative downtime t1 and the second preset multiple of the cumulative downtime t1, it indicates that the compressor's previous operating time t0 is moderate, neither too long nor too short, and therefore there is no need to change the compressor's frequency this time.

[0143] Step S317: Control the compressor to start running at the second operating frequency.

[0144] The refrigerator control method provided in this application can determine the refrigerator's heat load by comparing the running time of the compressor's last operation with the cumulative downtime of the compressor. Based on the operating frequency of the compressor in the last operation, the operating frequency of the compressor is adjusted to adapt the compressor frequency to the heat load of the refrigerator, thereby reducing the overall energy consumption and improving the product's energy efficiency.

[0145] This application also provides a refrigerator, for example, please refer to [link to example]. Figures 4-6 , Figure 4 This is a schematic diagram of a first structural embodiment of a refrigerator provided in this application. Figure 5 This is a schematic diagram of a second structure of a refrigerator provided in an embodiment of this application. Figure 6 This is a schematic diagram of a third structure of a refrigerator provided in an embodiment of this application. The refrigerator 100 can be as follows: Figure 4 The cross-door refrigerator shown can also be as follows: Figure 5 The French-style refrigerator shown can also be a side-by-side refrigerator, a double-door refrigerator, etc. Refrigerator 100 includes a compressor 110 and a controller 120.

[0146] The controller 120 is connected to the compressor 110 and is used to obtain the runtime of the compressor 110's last operation after receiving the compressor start command; obtain the cumulative downtime of the compressor 110 after the refrigerator 100 was last powered on or defrosted; determine the second operating frequency of the compressor 110 for this operation based on the first operating frequency of the compressor 110's last operation, the cumulative downtime, and the runtime; and control the compressor 110 to start and run at the second operating frequency.

[0147] It should be noted that compressor 110 belongs to the refrigeration system of refrigerator 100. The higher the operating frequency of compressor 110, the more cooling capacity of the evaporator in the refrigeration system, and thus the faster the refrigerator's storage compartment cools down.

[0148] The refrigerator provided in this application adjusts the operating frequency of the compressor during the current start-up based on the compressor's first operating frequency during the last operation, the compressor's cumulative downtime, and the compressor's last operating time. This ensures that the compressor operates at the optimal frequency, achieving the best match with the heat load of the refrigerator body, thereby reducing overall energy consumption and improving the product's energy efficiency.

[0149] The above provides a detailed description of the refrigerator control method and the refrigerator provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling a refrigerator, characterized in that, The refrigerator includes a compressor, and the control method includes: After receiving the compressor start command, obtain the runtime of the compressor's last operation; The cumulative downtime of the compressor after the refrigerator was last powered on or defrosted is obtained; The second operating frequency of the compressor for this operation is determined based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time. Control the compressor to start and operate at the second operating frequency; The step of determining the second operating frequency of the compressor for the current operation based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time includes: If the running time is less than or equal to a first preset multiple of the cumulative downtime, then a frequency less than the first running frequency is determined as the second running frequency; If the runtime is greater than a first preset multiple of the cumulative downtime, then a frequency greater than or equal to the first operating frequency is determined as the second operating frequency.

2. The refrigerator control method according to claim 1, characterized in that, After determining that the runtime is less than or equal to a first preset multiple of the cumulative downtime, the method further includes: Determine whether the first operating frequency is equal to the preset minimum operating frequency; If the first operating frequency is equal to the preset minimum operating frequency, then the second operating frequency is determined to be equal to the first operating frequency; If the first operating frequency is greater than the preset minimum operating frequency, then a frequency less than the first operating frequency is determined as the second operating frequency.

3. The refrigerator control method according to claim 1, characterized in that, The second operating frequency is determined according to the following formula: ,in, This indicates the second operating frequency. Indicates the first operating frequency. This indicates the first preset frequency.

4. The refrigerator control method according to claim 1, characterized in that, The step of determining a frequency greater than or equal to the first operating frequency as the second operating frequency if the runtime is greater than a first preset multiple of the cumulative downtime includes: If the runtime is greater than a first preset multiple of the cumulative downtime and less than or equal to a second preset multiple of the cumulative downtime, then the second running frequency is determined to be equal to the first running frequency, and the second preset multiple is greater than the first preset multiple. If the runtime is greater than a second preset multiple of the cumulative downtime, then a frequency greater than the first running frequency is determined as the second running frequency.

5. The refrigerator control method according to claim 4, characterized in that, The second operating frequency is determined according to the following formula: ,in, Indicates the second operating frequency. Indicates the first operating frequency. This indicates the preset maximum operating frequency.

6. The refrigerator control method according to any one of claims 1-5, characterized in that, After receiving the compressor start command, it also includes: Determine whether the compressor is being turned on for the first time after the refrigerator has been powered on or defrosted; If the compressor is being turned on for the first time after the refrigerator is powered on or defrosted, then the compressor is controlled to run at a preset maximum operating frequency.

7. The refrigerator control method according to any one of claims 1-5, characterized in that, After receiving the compressor start command, it also includes: Determine whether the compressor is the second time the refrigerator has been turned on after being powered on or defrosted; If the compressor is the second time the refrigerator has been powered on or defrosted, then the ambient temperature is obtained; The third operating frequency is determined based on the ambient temperature and a preset parameter library, which includes a one-to-one correspondence between multiple ambient temperature ranges and multiple compressor operating frequencies. The compressor is controlled to start and operate at the third operating frequency.

8. The refrigerator control method according to claim 7, characterized in that, After controlling the compressor to start operating at the third operating frequency, the method further includes: The first duration for which the compressor operates at the third operating frequency is obtained; If no compressor shutdown command is received after the first time exceeds the preset time, the operating frequency of the compressor is adjusted to the preset maximum operating frequency.

9. A refrigerator, characterized in that, include: compressor; The controller, connected to the compressor, is used for: After receiving the compressor start command, obtain the runtime of the compressor's last operation; The cumulative downtime of the compressor after the refrigerator was last powered on or defrosted is obtained; The second operating frequency of the compressor for this operation is determined based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time. Control the compressor to start and operate at the second operating frequency; The step of determining the second operating frequency of the compressor for the current operation based on the first operating frequency of the compressor's previous operation, the cumulative downtime, and the operating time includes: If the running time is less than or equal to a first preset multiple of the cumulative downtime, then a frequency less than the first running frequency is determined as the second running frequency; If the runtime is greater than a first preset multiple of the cumulative downtime, then a frequency greater than or equal to the first operating frequency is determined as the second operating frequency.

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