Refrigerator control method, device and refrigerator

Abstract

The present invention discloses a refrigerator control method, device and refrigerator. The method includes: controlling a compressor to operate at a preset maximum frequency, and obtaining a first operating power of the refrigerator corresponding to the preset maximum frequency; obtaining a minimum frequency of the compressor when the compressor startup rate is the largest and a second operating power of the refrigerator corresponding to the minimum frequency; determining an intermediate frequency and a third operating power of the refrigerator corresponding to the intermediate frequency according to the preset maximum frequency and the minimum frequency; determining the frequency of the compressor when the refrigerator has the minimum energy consumption by an optimization method according to the first operating power, the second operating power and the third operating power, and controlling the operation of the compressor according to the frequency of the compressor when the refrigerator has the minimum energy consumption. The present invention solves the problem that the frequency adjustment of the compressor in the prior art is not precise enough, automatically adapts to different use environments and compressor types, obtains the precise optimal operating frequency of the compressor, optimizes the power consumption of the refrigerator, and achieves the effect of energy saving.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular, to a refrigerator control method, device and refrigerator. Background Art

[0002] In recent years, with the development of the economy, the popularity rate of refrigerators has gradually increased. On the other hand, with the increasing emphasis on environmental protection by people, refrigerators can no longer merely meet the demand for refrigeration, but also need to meet the demand for energy conservation. As a household appliance that operates continuously for 24 hours, reasonably optimizing power consumption can solve the problem of power shortage. And for large cities with a dense population, the energy saved through the energy conservation of refrigerators is very considerable.

[0003] Currently, the look-up table method is widely used in the refrigerator industry to control the frequency of the compressor to achieve the purpose of energy conservation. However, the look-up table method has many limitations. The result obtained by relying on the look-up table method is a relatively broad and inaccurate result, and only a rough value of the frequency can be obtained, and the most energy-saving frequency range cannot be obtained. The look-up table method can only calculate the frequency for a certain type of compressor, and for different models of compressors, refrigerators and usage environment conditions, this method cannot fully fit the actual situation.

[0004] Regarding the problem that the frequency adjustment of the compressor in the related art is not precise enough, no effective solution has been proposed yet. Summary of the Invention

[0005] The present invention provides a refrigerator control method, device and refrigerator to at least solve the problem that the frequency adjustment of the compressor in the prior art is not precise enough.

[0006] To solve the above technical problems, according to one aspect of the embodiments of the present invention, a refrigerator control method is provided, including:

[0007] Controlling the compressor to operate at a preset maximum frequency, and obtaining the first operating power of the refrigerator corresponding to the preset maximum frequency;

[0008] Obtaining the minimum frequency of the compressor when the compressor startup rate is the largest and the second operating power of the refrigerator corresponding to the minimum frequency;

[0009] Determining an intermediate frequency and the third operating power of the refrigerator corresponding to the intermediate frequency according to the preset maximum frequency and the minimum frequency;

[0010] According to the first operating power, the second operating power and the third operating power, determining the frequency of the compressor when the refrigerator has the minimum energy consumption through an optimization method, and controlling the operation of the compressor according to the frequency of the compressor when the refrigerator has the minimum energy consumption.

[0011] Further, obtaining the minimum frequency of the compressor when the compressor startup rate is the largest includes:

[0012] Obtain the minimum startup rate of the compressor when the compressor operates at the preset maximum frequency;

[0013] Calculate the heat leakage of the refrigerator cabinet according to the minimum startup rate;

[0014] Obtain the heat leakage of the foaming layer of the refrigerator;

[0015] Calculate the minimum frequency of the compressor when the compressor startup rate is the maximum according to the heat leakage of the cabinet and the heat leakage of the foaming layer.

[0016] Further, calculating the heat leakage of the refrigerator cabinet according to the minimum startup rate includes:

[0017] Obtain the theoretical refrigerating capacity of the refrigerator;

[0018] Calculate the product of the theoretical refrigerating capacity and the minimum startup rate as the heat leakage of the cabinet.

[0019] Further, calculating the minimum frequency of the compressor when the compressor startup rate is the maximum according to the heat leakage of the cabinet and the heat leakage of the foaming layer includes:

[0020] Calculate the average value of the heat leakage of the cabinet and the heat leakage of the foaming layer;

[0021] Determine the minimum frequency of the compressor when the compressor startup rate is the maximum according to the average value.

[0022] Further, determining the frequency of the compressor when the energy consumption of the refrigerator is the minimum by an optimization method according to the first operating power, the second operating power, and the third operating power includes:

[0023] Form a power set according to the first operating power, the second operating power, and the third operating power;

[0024] Determine the frequency of the compressor when the energy consumption of the refrigerator is the minimum by an optimization method within the power set.

[0025] Further, determining the frequency of the compressor when the energy consumption of the refrigerator is the minimum by an optimization method within the power set includes:

[0026] Step S1: Sort the power set in ascending order to determine the minimum power interval;

[0027] Step S2: Determine the frequencies corresponding to the powers at both ends of the minimum power interval and calculate the average frequency;

[0028] Step S3: Obtain the operating power corresponding to the average frequency, and form a power set with the operating power corresponding to the average frequency and the powers at both ends of the minimum power interval;

[0029] Step S4: Repeat steps S1 to S3 until the difference between the frequencies corresponding to the powers at both ends of the minimum power range is less than 1, and take the average frequency as the frequency of the compressor when the refrigerator has the minimum energy consumption.

[0030] Further, a power set is formed according to the first operating power, the second operating power, and the third operating power, including:

[0031] Determine whether the third operating power is the maximum power;

[0032] If so, calculate the first average value of the preset maximum frequency and the minimum frequency, and the second average value of the minimum frequency and the intermediate frequency, obtain the fourth operating power corresponding to the first average value and the fifth operating power corresponding to the second average value, and form a power set with the first operating power, the second operating power, the third operating power, the fourth operating power, and the fifth operating power;

[0033] Otherwise, the first operating power, the second operating power, and the third operating power form a power set.

[0034] According to another aspect of the embodiments of the present invention, a refrigerator control device is provided, including:

[0035] A first operating power module, configured to control the compressor to operate at a preset maximum frequency and obtain the first operating power of the refrigerator corresponding to the preset maximum frequency;

[0036] A second operating power module, configured to obtain the minimum frequency of the compressor when the compressor start-up rate is the maximum and the second operating power of the refrigerator corresponding to the minimum frequency;

[0037] A third operating power module, configured to determine an intermediate frequency and the third operating power of the refrigerator corresponding to the intermediate frequency according to the preset maximum frequency and the minimum frequency;

[0038] An operation control module, configured to determine the frequency of the compressor when the refrigerator has the minimum energy consumption by an optimization method according to the first operating power, the second operating power, and the third operating power, and control the operation of the compressor according to the frequency of the compressor when the refrigerator has the minimum energy consumption.

[0039] According to yet another aspect of the embodiments of the present invention, a refrigerator is provided, including the refrigerator control device as described above.

[0040] According to yet another aspect of the embodiments of the present invention, a storage medium containing computer-executable instructions is provided, and the computer-executable instructions are used to execute the refrigerator control method as described above when executed by a computer processor.

[0041] In the present invention, a method for controlling the operating frequency of a compressor is provided. First, multiple operating frequencies of the compressor and the corresponding operating power of the refrigerator are obtained, including the first operating power corresponding to the preset maximum frequency, the second operating power corresponding to the minimum frequency, and the third operating power of the refrigerator corresponding to the intermediate frequency. Then, the frequency with the lowest energy consumption of the compressor is determined by an optimization method, and the operation of the compressor is controlled according to the frequency with the lowest energy consumption. The above solution is applicable to different types of compressors, refrigerators, and environmental conditions, the required conditions for regulation are relatively loose, it is easy to operate, and it is easy to obtain the accurate operating frequency of the compressor to optimize the power consumption of the refrigerator to achieve the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is an alternative flowchart of the refrigerator control method according to an embodiment of the present invention;

[0043] Figure 2 is another alternative flowchart of the refrigerator control method according to an embodiment of the present invention;

[0044] Figure 3 is an alternative structural block diagram of the refrigerator control device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0046] Embodiment 1

[0047] In the preferred Embodiment 1 of the present invention, a refrigerator control method is provided. This control method can be directly applicable to different types of compressors, refrigerators, and environmental conditions. The required conditions for regulation are relatively loose, and the regulation method is easy to operate. Specifically, Figure 1 shows an alternative flowchart of this method, as Figure 1 shown, this method includes the following steps S102 - S108:

[0048] S102: Control the compressor to operate at the preset maximum frequency, and obtain the first operating power of the refrigerator corresponding to the preset maximum frequency;

[0049] S104: Obtain the minimum frequency of the compressor when the compressor startup rate is the largest and the second operating power of the refrigerator corresponding to the minimum frequency;

[0050] S106: Determine the intermediate frequency and the third operating power of the refrigerator corresponding to the intermediate frequency according to the preset maximum frequency and minimum frequency; the intermediate frequency is the median of the preset maximum frequency and minimum frequency.

[0051] S108: According to the first operating power, the second operating power, and the third operating power, determine the frequency of the compressor when the energy consumption of the refrigerator is minimized through an optimization method, and control the operation of the compressor according to the frequency of the compressor when the energy consumption of the refrigerator is minimized.

[0052] In the above embodiment, a method for controlling the operating frequency of a compressor is provided. First, obtain multiple operating frequencies of the compressor and the corresponding operating power of the refrigerator and the corresponding operating power of the refrigerator, including the first operating power corresponding to the preset maximum frequency, the second operating power corresponding to the minimum frequency, and the third operating power of the refrigerator corresponding to the intermediate frequency. Then, determine the frequency with the lowest energy consumption of the compressor through an optimization method, and control the operation of the compressor according to the frequency with the lowest energy consumption. The above solution is applicable to different types of compressors, refrigerators, and environmental conditions. The required conditions for regulation are relatively loose, easy to operate, and it is easy to obtain the accurate operating frequency of the compressor to optimize the power consumption of the refrigerator to achieve the purpose of energy saving.

[0053] In an alternative embodiment of the present invention, obtaining the minimum frequency of the compressor when the compressor startup rate is the largest includes: obtaining the minimum startup rate of the compressor when the compressor operates at the preset maximum frequency; calculating the heat leakage of the refrigerator cabinet according to the minimum startup rate; obtaining the heat leakage of the foam layer of the refrigerator; calculating the minimum frequency of the compressor when the compressor startup rate is the largest according to the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer. Among them, calculating the heat leakage of the refrigerator cabinet according to the minimum startup rate includes: obtaining the theoretical refrigeration capacity of the refrigerator; calculating the product of the theoretical refrigeration capacity and the minimum startup rate as the heat leakage of the refrigerator cabinet. The heat leakage of the foam layer of the refrigerator can be achieved through actual measurement or through calculation.

[0054] After determining the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer, calculating the minimum frequency of the compressor when the compressor startup rate is the largest according to the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer includes: calculating the average value of the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer; determining the minimum frequency of the compressor when the compressor startup rate is the largest according to the average value. The maximum startup rate is 100%, and at this time, the minimum frequency is determined within the frequency range of the compressor.

[0055] After determining the first operating power, the second operating power, and the third operating power, determining the frequency of the compressor when the energy consumption of the refrigerator is minimized through an optimization method specifically includes: forming a power set according to the first operating power, the second operating power, and the third operating power; determining the frequency of the compressor when the energy consumption of the refrigerator is minimized within the power set.

[0056] In another excerpted embodiment of the present invention, the automatic optimization scheme includes the following steps:

[0057] Step S1: Sort the power set in ascending order to determine the minimum power interval;

[0058] Step S2: Determine the frequencies corresponding to the powers at both ends of the minimum power interval and calculate the average frequency;

[0059] Step S3: Obtain the operating power corresponding to the average frequency, and form a power set with the operating power corresponding to the average frequency, and the powers at both ends of the minimum power interval;

[0060] Step S4: Repeat Steps S1 to S3 until the difference between the frequencies corresponding to the powers at both ends of the minimum power interval is less than 1, and take the average frequency as the frequency with the lowest energy consumption.

[0061] Among them, forming a power set according to the first operating power, the second operating power, and the third operating power includes: determining whether the third operating power is the maximum power; if not, forming a power set with the first operating power, the second operating power, and the third operating power. If so, calculate the first average value of the preset maximum frequency and the minimum frequency, and the second average value of the minimum frequency and the intermediate frequency, obtain the fourth operating power corresponding to the first average value, and the fifth operating power corresponding to the second average value, and form a power set with the first operating power, the second operating power, the third operating power, the fourth operating power, and the fifth operating power.

[0062] In a preferred Embodiment 1 of the present invention, another refrigerator control method is further provided. Specifically, Figure 2 An optional flowchart showing this method is as Figure 2 shown. This method includes the following steps S201 - S216:

[0063] S201: Power on the refrigerator;

[0064] S202: Run the compressor at Mmax, and the startup rate Kmin and the refrigerator power value W1 at this time can be measured;

[0065] S203: Calculate the theoretical refrigerating capacity of the refrigerator at this time, and calculate the heat leakage N1 of the box body according to the formula; measure the system points T and P by the minimum startup rate Kmin of the refrigerator. At this time, it is the theoretical refrigerating capacity Mmax of the refrigerator, and then the heat leakage of the box body can be calculated according to the formula N1 = Mmax × Kmin;

[0066] S204: Measure the heat leakage N2 of the box body foam layer;

[0067] S205: Correct the two heat leakage amounts, and then calculate the minimum frequency Mmin at 100% startup rate, and measure the refrigerator power W2 at this time; correct the heat leakage amount of the box body and the heat leakage amount of the foaming layer N (corrected heat leakage amount) = (N1 + N2) / 2. From this, the minimum frequency Mmin can be obtained when the startup rate is 100%, and then the power value W2 at this time can be measured; the heat leakage amount generated by the minimum startup rate is N1 = Mmax × Kmin. Assuming a startup rate of 100% at this time, Mmin can be obtained;

[0068] S206: Calculate M3 = (Mmax + Mmin) / 2, and measure the power value W3 at this time;

[0069] S207: Compare W1, W2, and W3;

[0070] S208: W1 > W2 > W3 or W1 > W3 > W2;

[0071] S209: M4 = (M2 + M3) / 2, and then enter step S214;

[0072] S210: W3 > W2 > W1 or W3 > W1 > W2;

[0073] S211: Calculate the frequency intermediate values in the two intervals respectively, and then compare W1, W2, and W3 with the power values corresponding to the two frequency intermediate values, so as to obtain the smaller frequency interval, and then enter step S214;

[0074] S212: W2 > W1 > W3 or W2 > W3 > W1;

[0075] S213: M4 = (M1 + M3) / 2, and then enter step S214;

[0076] S214: Obtain M4, and measure the power value W4;

[0077] S215: Compare W4 with the power values in the frequency interval where it is located, determine the frequency interval with the minimum power, obtain M5 and W5, and then compare W5 with the power values in the frequency interval to obtain a more accurate frequency interval;

[0078] S216: Continuously loop and progress the above steps until the difference between the frequency intervals is less than or equal to 1. At this time, it is the optimal frequency of the compressor.

[0079] In the above embodiment, compare W1, W2, and W3, find the frequency interval with the minimum power, and calculate the intermediate value M4 of the frequency interval, and then measure W4. According to different comparison results, the value of M4 has the following situations:

[0080] (1) The first case is W1 > W2 > W3 or W1 > W3 > W2; in this case, M4 = (M2 + M3) / 2;

[0081] (2) The second case is W2 > W1 > W3 or W2 > W3 > W1; in this case, M4 = (M1 + M3) / 2;

[0082] (3) The third case is W3 > W2 > W1 or W3 > W1 > W2; in this case, the median frequency is equal to M3, and the value of M4 cannot be determined, or M4 calculated by the average method is M3, resulting in the inability to proceed with the next step. Therefore, two intervals (M1, M2) and (M2, M3) can be set respectively, and the median frequencies in the two intervals are obtained respectively. Then, W1, W2, and W3 are compared with the power values corresponding to the two median frequencies to obtain the minimum frequency interval, and then the frequency value M4 can be calculated. If the value of M4 still cannot be determined, the frequency interval can be further divided;

[0083] Compare W4 with the two power values corresponding to the two ends of its frequency interval to find the frequency interval with the minimum power. The same as the above cases, M5 and W5 can be obtained. Then, compare W5 with the power values in the frequency interval to obtain a more accurate frequency interval;

[0084] Continuously loop and progress the above steps to continuously approach the optimal frequency of the compressor. When the difference between the two frequency values in the minimum power interval is less than or equal to 1, the median frequency cannot be calculated, and the frequency value at this time is the optimal frequency value.

[0085] The main steps in the above process are calculation and testing. Therefore, it can be more widely applied to various models of compressors. By repeatedly calculating, the optimal operating frequency of the compressor can be obtained, enabling the compressor to automatically adapt to different usage environments, optimize the power consumption of the refrigerator, and achieve the purpose of energy conservation.

[0086] Embodiment 2

[0087] Based on the refrigerator control method provided in the above Embodiment 1, in the preferred Embodiment 2 of the present invention, a refrigerator control device is further provided. Specifically, Figure 3 Show an optional structural block diagram of the device, as Figure 3 shown. The device includes:

[0088] The first operating power module 302 is used to control the compressor to operate at a preset maximum frequency and obtain the first operating power of the refrigerator corresponding to the preset maximum frequency;

[0089] The second operating power module 304, connected to the first operating power module 302, is configured to obtain the minimum frequency of the compressor when the compressor startup rate is the largest and the second operating power of the refrigerator corresponding to the minimum frequency.

[0090] The third operating power module 306, connected to the second operating power module 304, is configured to determine an intermediate frequency and the third operating power of the refrigerator corresponding to the intermediate frequency according to a preset maximum frequency and a minimum frequency.

[0091] The operation control module 308, connected to the third operating power module 306, is configured to determine the frequency of the compressor when the refrigerator energy consumption is the smallest by an optimization method according to the first operating power, the second operating power, and the third operating power, and control the operation of the compressor according to the frequency of the compressor when the refrigerator energy consumption is the smallest.

[0092] In the above embodiment, a method for controlling the operating frequency of a compressor is provided. First, multiple operating frequencies of the compressor and the corresponding operating power of the refrigerator are obtained, including the first operating power corresponding to the preset maximum frequency, the second operating power corresponding to the minimum frequency, and the third operating power of the refrigerator corresponding to the intermediate frequency. Then, the frequency with the lowest energy consumption of the compressor is determined by an optimization method, and the operation of the compressor is controlled according to the frequency with the lowest energy consumption. The above solution is applicable to different types of compressors, refrigerators, and environmental conditions. The required conditions for regulation are relatively loose, easy to operate, and it is easy to obtain the accurate operating frequency of the compressor, optimize the power consumption of the refrigerator, and achieve the purpose of energy saving.

[0093] The second operating power module 304 includes: a first acquisition sub-module, configured to acquire the minimum startup rate of the compressor when the compressor operates at the preset maximum frequency; a first calculation sub-module, configured to calculate the heat leakage of the refrigerator cabinet according to the minimum startup rate; a second acquisition sub-module, configured to acquire the heat leakage of the foaming layer of the refrigerator; a second calculation sub-module, configured to calculate the minimum frequency of the compressor when the compressor startup rate is the largest according to the heat leakage of the refrigerator cabinet and the heat leakage of the foaming layer.

[0094] The first calculation sub-module includes: a first acquisition unit, configured to acquire the theoretical refrigerating capacity of the refrigerator; a first calculation unit, configured to calculate the product of the theoretical refrigerating capacity and the minimum startup rate as the heat leakage of the refrigerator cabinet.

[0095] The second calculation sub-module includes: a second calculation unit, configured to calculate the average value of the heat leakage of the refrigerator cabinet and the heat leakage of the foaming layer; a first determination unit, configured to determine the minimum frequency of the compressor when the compressor startup rate is the largest according to the average value.

[0096] The operation control module 308 includes: a first determination sub-module, configured to form a power set according to the first operating power, the second operating power, and the third operating power; a second determination sub-module, configured to determine the frequency of the compressor when the refrigerator energy consumption is the smallest by an optimization method within the power set.

[0097] The second determination sub-module includes:

[0098] Step S1: Sort the power set in ascending order to determine the minimum power interval;

[0099] Step S2: Determine the frequencies corresponding to the powers at both ends of the minimum power interval, and calculate the average frequency;

[0100] Step S3: Obtain the operating power corresponding to the average frequency, and form a power set with the operating power corresponding to the average frequency and the powers at both ends of the minimum power interval;

[0101] Step S4: Repeat Steps S1 to S3 until the difference between the frequencies corresponding to the powers at both ends of the minimum power interval is less than 1, and take the average frequency as the frequency of the compressor when the refrigerator has the lowest energy consumption.

[0102] The first determination sub-module includes: determining whether the third operating power is the maximum power; if so, calculating the first average value of the preset maximum frequency and the minimum frequency, the second average value of the minimum frequency and the intermediate frequency, obtaining the fourth operating power corresponding to the first average value, the fifth operating power corresponding to the second average value, and forming a power set with the first operating power, the second operating power, the third operating power, the fourth operating power, and the fifth operating power; otherwise, forming a power set with the first operating power, the second operating power, and the third operating power.

[0103] Regarding the device in the above embodiments, the specific manners in which each unit and module perform operations have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0104] Embodiment 3

[0105] Based on the refrigerator control device provided in the above Embodiment 2, in a preferred Embodiment 3 of the present invention, a refrigerator is further provided, including the refrigerator control device as described above.

[0106] In the above embodiment, a method for controlling the operating frequency of a compressor is provided. First, multiple operating frequencies of the compressor and the corresponding operating powers of the refrigerator are obtained, including the first operating power corresponding to the preset maximum frequency, the second operating power corresponding to the minimum frequency, and the third operating power of the refrigerator corresponding to the intermediate frequency. Then, the frequency with the lowest energy consumption of the compressor is determined through an optimization method, and the operation of the compressor is controlled according to the frequency with the lowest energy consumption. The above solution is applicable to different types of compressors, refrigerators, and environmental conditions, the required conditions for regulation are relatively loose, it is easy to operate, and it is easy to obtain the accurate operating frequency of the compressor to optimize the power consumption of the refrigerator to achieve the purpose of energy saving.

[0107] Embodiment 4

[0108] Based on the refrigerator control method provided in the above-mentioned Embodiment 1, in a preferred Embodiment 4 of the present invention, a storage medium containing computer-executable instructions is further provided, and the computer-executable instructions are used to execute the refrigerator control method as described above when executed by a computer processor.

[0109] In the above-mentioned implementation manner, a compressor operating frequency control method is provided. First, multiple operating frequencies of the compressor and the corresponding operating power of the refrigerator are obtained, including the first operating power corresponding to the preset maximum frequency, the second operating power corresponding to the minimum frequency, and the third operating power of the refrigerator corresponding to the intermediate frequency. Then, the energy consumption lowest frequency of the compressor is determined by an optimization method, and the operation of the compressor is controlled according to the energy consumption lowest frequency. The above solution is applicable to different types of compressors, refrigerators, and environmental conditions, the required conditions for regulation are relatively loose, it is easy to operate, and it is easy to obtain the accurate operating frequency of the compressor to optimize the power consumption of the refrigerator to achieve the purpose of energy saving.

[0110] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not invented by the present invention. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0111] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A refrigerator control method, characterized in that, comprising: Controlling the compressor to operate at a preset maximum frequency, and obtaining the first operating power of the refrigerator corresponding to the preset maximum frequency; Obtaining the minimum frequency of the compressor and the second operating power of the refrigerator corresponding to the minimum frequency when the compressor startup rate is the maximum; Determining an intermediate frequency and the third operating power of the refrigerator corresponding to the intermediate frequency according to the preset maximum frequency and the minimum frequency; According to the first operating power, the second operating power and the third operating power, determining the frequency of the compressor when the refrigerator has the minimum energy consumption by an optimization method, and controlling the operation of the compressor according to the frequency of the compressor when the refrigerator has the minimum energy consumption; According to the first operating power, the second operating power and the third operating power, determining the frequency of the compressor when the refrigerator has the minimum energy consumption by an optimization method, including: Forming a power set according to the first operating power, the second operating power and the third operating power; Determining the frequency of the compressor when the refrigerator has the minimum energy consumption by an optimization method within the power set.

2. The method according to claim 1, characterized in that, Obtaining the minimum frequency of the compressor when the compressor startup rate is the maximum, including: Obtaining the minimum startup rate of the compressor when the compressor operates at the preset maximum frequency; Calculating the heat leakage of the refrigerator cabinet according to the minimum startup rate; Obtaining the heat leakage of the foam layer of the refrigerator; Calculating the minimum frequency of the compressor when the compressor startup rate is the maximum according to the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer.

3. The method according to claim 2, characterized in that, Calculating the heat leakage of the refrigerator cabinet according to the minimum startup rate, including: Obtaining the theoretical refrigerating capacity of the refrigerator; Calculating the product of the theoretical refrigerating capacity and the minimum startup rate as the heat leakage of the refrigerator cabinet.

4. The method according to claim 2, characterized in that, Calculating the minimum frequency of the compressor when the compressor startup rate is the maximum according to the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer, including: Calculating the average value of the heat leakage of the refrigerator cabinet and the heat leakage of the foam layer; Determining the minimum frequency of the compressor when the compressor startup rate is the maximum according to the average value.

5. The method according to claim 1, characterized in that, Determining the frequency of the compressor when the refrigerator has the minimum energy consumption by an optimization method within the power set, including: Step S1: Sorting the power set in ascending order to determine the minimum power interval; Step S2: Determining the frequencies corresponding to the powers at both ends of the minimum power interval, and calculating the average frequency; Step S3: Obtaining the operating power corresponding to the average frequency, and forming the power set with the operating power corresponding to the average frequency and the powers at both ends of the minimum power interval; Step S4: Repeating step S1 to step S3 until the difference between the frequencies corresponding to the powers at both ends of the minimum power interval is less than 1, and taking the average frequency as the frequency of the compressor when the refrigerator has the minimum energy consumption.

6. The method according to claim 1, wherein, forming a power set according to the first operating power, the second operating power, and the third operating power includes: judging whether the third operating power is the maximum power; if so, calculating a first average value of the preset maximum frequency and the minimum frequency, and a second average value of the minimum frequency and the intermediate frequency, obtaining a fourth operating power corresponding to the first average value and a fifth operating power corresponding to the second average value, and the first operating power, the second operating power, the third operating power, the fourth operating power, and the fifth operating power form the power set; otherwise, the first operating power, the second operating power, and the third operating power form the power set.

7. A refrigerator control device, wherein, it includes: a first operating power module, configured to control the compressor to operate at a preset maximum frequency, and obtain a first operating power of the refrigerator corresponding to the preset maximum frequency; a second operating power module, configured to obtain a minimum frequency of the compressor when the compressor startup rate is the maximum and a second operating power of the refrigerator corresponding to the minimum frequency; a third operating power module, configured to determine an intermediate frequency and a third operating power of the refrigerator corresponding to the intermediate frequency according to the preset maximum frequency and the minimum frequency; an operation control module, configured to determine a frequency of the compressor when the refrigerator has the minimum energy consumption through an optimization method according to the first operating power, the second operating power, and the third operating power, and control the operation of the compressor according to the frequency of the compressor when the refrigerator has the minimum energy consumption; the operation control module includes: a first determination sub-module, configured to form a power set according to the first operating power, the second operating power, and the third operating power; a second determination sub-module, configured to determine a frequency of the compressor when the refrigerator has the minimum energy consumption through an optimization method within the power set.

8. A refrigerator, wherein, it includes the refrigerator control device according to claim 7.

9. A storage medium containing computer-executable instructions, wherein, the computer-executable instructions are used to execute the refrigerator control method according to any one of claims 1 to 6 when executed by a computer processor.

Images