Electronic expansion valve control method, device, air conditioner and electronic equipment

Abstract

The present invention provides an electronic expansion valve control method, device, air conditioner and electronic device. The method includes: obtaining the ambient temperature of the outdoor unit of the air conditioner, and determining the target steady-state valve opening degree of the electronic expansion valve and the first compressor operating frequency at the ambient temperature of the outdoor unit of the air conditioner; adjusting the electronic expansion valve to the target steady-state valve opening degree, and obtaining the current compressor operating frequency as the second compressor operating frequency; determining the initial valve opening degree of the electronic expansion valve based on the target steady-state valve opening degree, the first compressor operating frequency and the second compressor operating frequency, so as to adjust the electronic expansion valve based on the initial valve opening degree. The present invention compensates the valve opening degree of the electronic expansion valve based on the change of the compressor frequency, so as to ensure that the initial valve opening degree is close to the final steady-state valve opening degree, thereby shortening the adjustment time of the electronic expansion valve and achieving the purpose of energy saving and improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a method and device for controlling an electronic expansion valve, an air conditioner, and an electronic device. Background Art

[0002] In order to improve the energy efficiency of air conditioners, many air conditioners use electronic expansion valves as throttling devices. At present, the control method for the initial valve opening of the electronic expansion valve is relatively cumbersome, and it is easy to have a large difference between the initial valve opening and the final valve opening. It takes a long time for the electronic expansion valve to be adjusted in place. Moreover, the initial valve opening may be inappropriate, causing exhaust protection or indoor unit freezing protection, resulting in compressor frequency reduction, power fluctuation, and affecting the user experience. Summary of the Invention

[0003] The present invention provides a method and device for controlling an electronic expansion valve, an air conditioner, and an electronic device, which are used to solve the defect of long adjustment time of the electronic expansion valve in the prior art, and to reduce the adjustment time of the electronic expansion valve and avoid the problems of exhaust protection or indoor unit freezing protection caused by inappropriate initial valve opening.

[0004] The present invention provides a method for controlling an electronic expansion valve, including:

[0005] When the air conditioner is in an on state, obtain the ambient temperature of the outdoor unit of the air conditioner, and determine the target steady-state valve opening of the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0006] Adjust the electronic expansion valve to the target steady-state valve opening, and obtain the current compressor operating frequency as the second compressor operating frequency;

[0007] Based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency, determine the initial valve opening of the electronic expansion valve, and adjust the electronic expansion valve based on the initial valve opening.

[0008] According to the method for controlling an electronic expansion valve provided by the present invention, the step of determining the target steady-state valve opening of the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner includes:

[0009] Match the ambient temperature of the outdoor unit of the air conditioner with a preset relationship table to determine the target steady-state valve opening of the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0010] Wherein, the relationship table includes the target steady-state valve opening of the electronic expansion valve corresponding to different temperature ranges and the compressor operating frequency under the air conditioner steady state.

[0011] According to the electronic expansion valve control method provided by the present invention, determining the initial valve opening degree of the electronic expansion valve based on the target steady-state valve opening degree, the operating frequency of the first compressor, and the operating frequency of the second compressor includes:

[0012] Determining the frequency difference between the operating frequency of the second compressor and the operating frequency of the first compressor;

[0013] Based on the target steady-state valve opening degree and the frequency difference, obtaining the initial valve opening degree.

[0014] According to the electronic expansion valve control method provided by the present invention, obtaining the initial valve opening degree based on the target steady-state valve opening degree and the frequency difference includes:

[0015] Multiplying the frequency difference by a preset coefficient and then summing the result with the target steady-state valve opening degree to obtain the initial valve opening degree;

[0016] Wherein, the preset coefficient is a slope value obtained by linearly fitting the historical operating frequency of the compressor and the historical valve opening degree of the electronic expansion valve.

[0017] According to the electronic expansion valve control method provided by the present invention, adjusting the electronic expansion valve based on the initial valve opening degree includes:

[0018] Obtaining the exhaust temperature of the air conditioner, and performing PID adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening degree.

[0019] The present invention also provides an electronic expansion valve control device, including:

[0020] A determination module, configured to obtain the ambient temperature of the outdoor unit of the air conditioner in the state where the air conditioner is turned on, and determine the target steady-state valve opening degree corresponding to the electronic expansion valve and the operating frequency of the first compressor corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0021] An acquisition module, configured to adjust the electronic expansion valve to the target steady-state valve opening degree, and obtain the current operating frequency of the compressor as the operating frequency of the second compressor;

[0022] An adjustment module, configured to determine the initial valve opening degree of the electronic expansion valve based on the target steady-state valve opening degree, the operating frequency of the first compressor, and the operating frequency of the second compressor, so as to adjust the electronic expansion valve based on the initial valve opening degree.

[0023] The present invention also provides an air conditioner, including the above-mentioned electronic expansion valve control device.

[0024] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the electronic expansion valve control method described in any one of the above is implemented.

[0025] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the electronic expansion valve control method described in any one of the above is implemented.

[0026] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, the electronic expansion valve control method described in any one of the above is implemented.

[0027] For the electronic expansion valve control method, device, air conditioner, and electronic device provided by the present invention, since during the process from when the air conditioner is turned on until it enters a steady state, the operating voltage of the air conditioner changes from small to large, and the corresponding compressor frequency changes greatly. Based on the first compressor operating frequency and the second compressor operating frequency, the change situation of the compressor frequency during this process can be initially determined. After the air conditioner is turned on, first, based on the change situation of the compressor frequency during this process, the valve opening of the electronic expansion valve is compensated to ensure that the initial valve opening is close to the final steady-state valve opening. Furthermore, the adjustment time of the electronic expansion valve can be shortened, and the air conditioner can reach a stable working state in a short time, so as to solve the defect of long adjustment time of the electronic expansion valve in the prior art, reduce the adjustment time of the electronic expansion valve, avoid problems such as exhaust protection or indoor unit freezing protection caused by improper initial valve opening, and achieve the purpose of energy saving and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is one of the flow schematic diagrams of the electronic expansion valve control method provided by the present invention;

[0030] Figure 2 is another flow schematic diagram of the electronic expansion valve control method provided by the present invention;

[0031] Figure 3 is the structural schematic diagram of the electronic expansion valve control device provided by the present invention;

[0032] Figure 4It is a schematic structural diagram of the electronic device provided by the present invention. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0034] The following Figures 1 - 4 describes the electronic expansion valve control method, device, air conditioner and electronic device of the present invention.

[0035] As Figure 1 shown, the electronic expansion valve control method provided by the present invention includes:

[0036] Step 110: In the state where the air conditioner is turned on, obtain the ambient temperature of the outdoor unit of the air conditioner, and determine the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the steady state of the air conditioner at the ambient temperature of the outdoor unit of the air conditioner.

[0037] It can be understood that the air conditioner in this embodiment is a variable-frequency air conditioner; the existing electronic expansion valve control logic is that the initial valve opening degree Y = INT(a*Hz + b + dp), dp = (Tao - 35)*K1.

[0038] Wherein, INT represents the integer-taking operation, a is a preset coefficient, b is a constant, K1 is a refrigeration coefficient, Hz is the actual operating frequency of the compressor, and Tao is the ambient temperature of the outdoor unit of the air conditioner detected for the first time when the air conditioner starts. a, b, and K1 can be obtained by linear fitting through obtaining multiple groups of initial valve opening degrees, compressor operating frequencies, and ambient temperatures of the outdoor unit of the air conditioner.

[0039] There is a linear relationship between the initial valve opening degree Y and the compressor operating frequency and the ambient temperature of the outdoor unit of the air conditioner. There will be a large difference between the initial valve opening degree and the final valve opening degree, and more adjustment time is required. Therefore, the present invention provides a solution that can reduce the valve opening degree adjustment time.

[0040] The target steady-state valve opening degree is the valve opening degree of the electronic expansion valve corresponding to the air conditioner when it enters the stable working state after being turned on. There are differences in the corresponding target steady-state valve opening degrees in different ambient temperature ranges of the outdoor unit of the air conditioner.

[0041] The first compressor operating frequency is the theoretical operating frequency of the compressor when the air conditioner enters the stable working state at the current ambient temperature.

[0042] Step 120: Adjust the electronic expansion valve to the target steady-state valve opening, and obtain the current compressor operating frequency as the second compressor operating frequency.

[0043] It can be understood that after the air conditioner is turned on, first adjust the electronic expansion valve of the air conditioner to the target steady-state valve opening for operation, and obtain the current compressor operating frequency as the second compressor operating frequency.

[0044] After the air conditioner is turned on, it is necessary to adjust the valve opening of the electronic expansion valve until the air conditioner is in a stable working state, that is, the steady state.

[0045] Further, within 3 minutes after the air conditioner is turned on, adjust the electronic expansion valve to the target steady-state valve opening, obtain the current compressor operating frequency as the second compressor operating frequency. At 6 minutes after the air conditioner is turned on, determine the initial valve opening, and start to adjust the electronic expansion valve based on the initial valve opening.

[0046] Step 130: Based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency, determine the initial valve opening of the electronic expansion valve, and adjust the electronic expansion valve based on the initial valve opening.

[0047] It can be understood that during the process from when the air conditioner is turned on until it enters the steady state, the working voltage of the air conditioner changes from small to large, and the corresponding compressor frequency changes greatly. Based on the first compressor operating frequency and the second compressor operating frequency, the change situation of the compressor frequency during this process can be initially determined. After the air conditioner is turned on, first compensate the valve opening of the electronic expansion valve based on the change situation of the compressor frequency during this process to ensure that the initial valve opening is close to the final steady-state valve opening, thereby shortening the adjustment time of the electronic expansion valve, enabling the air conditioner to reach a stable working state in a short time, and achieving the purpose of energy saving and improving the user experience.

[0048] In some embodiments, the determination of the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the air conditioner outdoor unit ambient temperature includes:

[0049] Match the air conditioner outdoor unit ambient temperature with a preset relationship table to determine the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the air conditioner outdoor unit ambient temperature;

[0050] Wherein, the relationship table includes the target steady-state valve opening of the electronic expansion valve corresponding to different temperature ranges and the compressor operating frequency under the air conditioner steady state.

[0051] It can be understood that the above relationship table can be statistically determined based on the historical steady-state valve opening degrees corresponding to different temperature ranges and the compressor operating frequencies under steady state.

[0052] The relationship table is shown in Table 1. In Table 1, △H is the frequency difference between the operating frequency of the second compressor and the operating frequency of the first compressor in the corresponding temperature range, and a is a preset coefficient.

[0053]

[0054]

[0055] Table 1

[0056] In some embodiments, determining the initial valve opening degree of the electronic expansion valve based on the target steady-state valve opening degree, the operating frequency of the first compressor, and the operating frequency of the second compressor includes:

[0057] Determining the frequency difference between the operating frequency of the second compressor and the operating frequency of the first compressor;

[0058] Based on the target steady-state valve opening degree and the frequency difference, obtaining the initial valve opening degree.

[0059] It can be understood that the frequency difference between the operating frequency of the second compressor and the operating frequency of the first compressor represents the change in the compressor operating frequency during the process from the start to the steady state of the air conditioner. Since the valve opening degree of the electronic expansion valve is related to the compressor operating frequency, after the air conditioner is turned on, the target steady-state valve is compensated based on the frequency difference between the operating frequency of the second compressor and the operating frequency of the first compressor. The determined initial valve opening degree is closer to the final steady-state valve opening degree, and the time for adjusting the valve opening degree is also shorter.

[0060] In some embodiments, obtaining the initial valve opening degree based on the target steady-state valve opening degree and the frequency difference includes:

[0061] Multiplying the frequency difference by the preset coefficient and then summing the result with the target steady-state valve opening degree to obtain the initial valve opening degree;

[0062] Wherein, the preset coefficient is the slope value obtained by linearly fitting the historical operating frequency of the compressor and the historical valve opening degree of the electronic expansion valve.

[0063] It can be understood that in this embodiment, the initial valve opening degree Y = INT(Y0 + a*(H2 - H1)).

[0064] Wherein, INT represents the rounding operation, Y0 is the final valve opening of the electronic expansion valve corresponding to the ambient temperature T of the outdoor unit of the air conditioner under normal voltage (i.e., steady state) when the ambient temperature of the outdoor unit of the air conditioner is constant, that is, the corresponding target steady-state valve opening, a is a preset coefficient, H2 is the operating frequency of the first compressor, and H1 is the operating frequency of the second compressor.

[0065] In some embodiments, adjusting the electronic expansion valve based on the initial valve opening includes:

[0066] Obtaining the exhaust temperature of the air conditioner, and performing PID adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening.

[0067] It can be understood that the exhaust temperature of the air conditioner can be collected by a temperature sensor on the exhaust pipe of the air conditioner. PID adjustment is a linear adjustment law with proportional, integral, and derivative actions.

[0068] In some embodiments, the electronic expansion valve control method is as Figure 2 shown. After the air conditioner is turned on, the outdoor unit temperature Tao of the air conditioner is detected, and the steady-state valve opening Y0 corresponding to the temperature range where the outdoor unit temperature Tao is located is determined. Keep the steady-state valve opening Y0 running for the first 3 minutes after the air conditioner is turned on, detect the actual operating frequency of the current compressor, that is, the operating frequency H2 of the second compressor, calculate the frequency difference between it and the operating frequency H1 of the first compressor. At 6 minutes after the air conditioner is turned on, determine the initial valve opening based on the operating frequency H2 of the second compressor and the operating frequency H1 of the first compressor, and perform PID adjustment in combination with the exhaust temperature of the air conditioner until the air conditioner enters a steady state.

[0069] In summary, the electronic expansion valve control method provided by the present invention includes: in the state where the air conditioner is turned on, obtaining the ambient temperature of the outdoor unit of the air conditioner, and determining the target steady-state valve opening corresponding to the electronic expansion valve and the operating frequency of the first compressor corresponding to the air conditioner steady state under the ambient temperature of the outdoor unit of the air conditioner; adjusting the electronic expansion valve to the target steady-state valve opening, and obtaining the current operating frequency of the compressor as the operating frequency H2 of the second compressor; determining the initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the operating frequency of the first compressor, and the operating frequency of the second compressor, so as to adjust the electronic expansion valve based on the initial valve opening.

[0070] Since after the air conditioner is turned on and until it enters the steady state, the operating voltage of the air conditioner changes from small to large, and the corresponding compressor frequency changes greatly. Based on the first compressor operating frequency and the second compressor operating frequency, the change of the compressor frequency during this process can be preliminarily determined. After the air conditioner is turned on, first, based on the change of the compressor frequency during this process, the valve opening of the electronic expansion valve is compensated to ensure that the initial valve opening is close to the final steady-state valve opening, thereby shortening the adjustment time of the electronic expansion valve. The air conditioner can reach the stable operating state in a short time, so as to solve the defect of long adjustment time of the electronic expansion valve in the prior art, reduce the adjustment time of the electronic expansion valve, avoid the problems of exhaust protection or indoor unit freezing protection caused by improper initial valve opening, and achieve the purpose of energy saving and improving user experience.

[0071] The electronic expansion valve control device provided by the present invention will be described below. The electronic expansion valve control device described below can be correspondingly referred to the electronic expansion valve control method described above.

[0072] As Figure 3 shown, the electronic expansion valve control device provided by the present invention includes: a determination module, an acquisition module, and an adjustment module.

[0073] The determination module is used to obtain the ambient temperature of the outdoor unit of the air conditioner in the state where the air conditioner is turned on, and determine the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0074] The acquisition module is used to adjust the electronic expansion valve to the target steady-state valve opening, and obtain the current compressor operating frequency as the second compressor operating frequency;

[0075] The adjustment module is used to determine the initial valve opening of the electronic expansion valve based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency, and adjust the electronic expansion valve based on the initial valve opening.

[0076] In some embodiments, the determination module is further used to match the ambient temperature of the outdoor unit of the air conditioner with a preset temperature-valve opening correspondence table, and determine the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0077] Wherein, the temperature-valve opening correspondence table includes the target steady-state valve openings of the electronic expansion valve corresponding to different temperature ranges.

[0078] In some embodiments, the adjustment module includes:

[0079] A first calculation unit for determining a frequency difference between the operating frequency of the first compressor and the operating frequency of the second compressor;

[0080] A second calculation unit for obtaining the initial valve opening based on the target steady-state valve opening and the frequency difference.

[0081] In some embodiments, the second calculation unit is further configured to multiply the frequency difference by a preset coefficient and then sum the result with the target steady-state valve opening to obtain the initial valve opening;

[0082] Wherein the preset coefficient is a slope value obtained by linearly fitting the historical operating frequency of the compressor and the historical valve opening of the electronic expansion valve.

[0083] In some embodiments, the adjustment module includes:

[0084] An adjustment unit for obtaining the exhaust temperature of the air conditioner and performing PID adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening.

[0085] In some embodiments, the acquisition module is further configured to, after the air conditioner is turned on, adjust the electronic expansion valve to the maximum valve opening and obtain the current operating frequency of the compressor as the operating frequency of the first compressor.

[0086] The following describes the electronic device, computer program product, and storage medium provided by the present invention. The electronic device, computer program product, and storage medium described below can be correspondingly referred to the electronic expansion valve control method described above.

[0087] Figure 4 Illustrates a schematic physical structure diagram of an electronic device, as Figure 4 shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440. Among them, the processor 410, the communication interface 420, and the memory 430 communicate with each other through the communication bus 440. The processor 410 can call the logical instructions in the memory 430 to execute the electronic expansion valve control method, which includes:

[0088] In a state where the air conditioner is turned on, obtain the ambient temperature of the outdoor unit of the air conditioner, and determine the target steady-state valve opening corresponding to the electronic expansion valve and the operating frequency of the first compressor corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0089] Adjust the electronic expansion valve to the target steady-state valve opening, and obtain the current compressor operating frequency as the second compressor operating frequency;

[0090] Based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency, determine the initial valve opening of the electronic expansion valve, and adjust the electronic expansion valve based on the initial valve opening.

[0091] In addition, when the logic instructions in the above-mentioned memory 430 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0092] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the electronic expansion valve control method provided by the above-mentioned various methods. The method includes:

[0093] In the state where the air conditioner is turned on, obtain the ambient temperature of the outdoor unit of the air conditioner, and determine the target steady-state valve opening corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner;

[0094] Adjust the electronic expansion valve to the target steady-state valve opening, and obtain the current compressor operating frequency as the second compressor operating frequency;

[0095] Based on the target steady-state valve opening, the first compressor operating frequency, and the second compressor operating frequency, determine the initial valve opening of the electronic expansion valve, and adjust the electronic expansion valve based on the initial valve opening.

[0096] On yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the electronic expansion valve control method provided by the above-mentioned various methods. The method includes:

[0097] When the air conditioner is turned on, obtain the ambient temperature of the outdoor unit of the air conditioner, and determine the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the steady state of the air conditioner at the ambient temperature of the outdoor unit of the air conditioner;

[0098] Adjust the electronic expansion valve to the target steady-state valve opening degree, and obtain the current compressor operating frequency as the second compressor operating frequency;

[0099] Based on the target steady-state valve opening degree, the first compressor operating frequency, and the second compressor operating frequency, determine the initial valve opening degree of the electronic expansion valve, so as to adjust the electronic expansion valve based on the initial valve opening degree.

[0100] The device embodiments described above are merely illustrative. 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 may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative work.

[0101] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic expansion valve control method, characterized in that, Including: When the air conditioner is in the on state, obtain the ambient temperature of the outdoor unit of the air conditioner, and determine the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner; Adjust the electronic expansion valve to the target steady-state valve opening degree, and obtain the current compressor operating frequency as the second compressor operating frequency; Based on the target steady-state valve opening degree, the first compressor operating frequency, and the second compressor operating frequency, determine the initial valve opening degree of the electronic expansion valve, so as to adjust the electronic expansion valve based on the initial valve opening degree; The step of determining the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner includes: matching the ambient temperature of the outdoor unit of the air conditioner with a preset relationship table, and determining the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner; Wherein, the relationship table includes the target steady-state valve opening degrees of the electronic expansion valve corresponding to different temperature ranges and the compressor operating frequencies under the air conditioner steady state, and the relationship table is statistically determined based on the historical steady-state valve opening degrees corresponding to different temperature ranges and the compressor operating frequencies under the air conditioner steady state.

2. The electronic expansion valve control method according to claim 1, characterized in that, The step of determining the initial valve opening degree of the electronic expansion valve based on the target steady-state valve opening degree, the first compressor operating frequency, and the second compressor operating frequency includes: Determine the frequency difference between the second compressor operating frequency and the first compressor operating frequency; Based on the target steady-state valve opening degree and the frequency difference, obtain the initial valve opening degree.

3. The electronic expansion valve control method according to claim 2, characterized in that, The step of obtaining the initial valve opening degree based on the target steady-state valve opening degree and the frequency difference includes: Multiply the frequency difference by a preset coefficient, and then sum it with the target steady-state valve opening degree to obtain the initial valve opening degree; Wherein, the preset coefficient is the slope value obtained by linearly fitting between the historical operating frequency of the compressor and the historical valve opening degree of the electronic expansion valve.

4. The electronic expansion valve control method according to any one of claims 1 - 3, characterized in that, The step of adjusting the electronic expansion valve based on the initial valve opening degree includes: Obtain the exhaust temperature of the air conditioner, and perform PID adjustment on the electronic expansion valve based on the exhaust temperature and the initial valve opening degree.

5. An electronic expansion valve control device, characterized in that, Including: A determination module, configured to obtain the ambient temperature of the outdoor unit of the air conditioner when the air conditioner is in the on state, and determine the target steady-state valve opening degree corresponding to the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner; An acquisition module, configured to adjust the electronic expansion valve to the target steady-state valve opening degree, and obtain the current compressor operating frequency as the second compressor operating frequency; An adjustment module, configured to determine the initial valve opening degree of the electronic expansion valve based on the target steady-state valve opening degree, the first compressor operating frequency, and the second compressor operating frequency, so as to adjust the electronic expansion valve based on the initial valve opening degree. Determining the target steady-state valve opening degree of the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner includes: matching the ambient temperature of the outdoor unit of the air conditioner with a preset relation table to determine the target steady-state valve opening degree of the electronic expansion valve and the first compressor operating frequency corresponding to the air conditioner steady state at the ambient temperature of the outdoor unit of the air conditioner; Wherein, the relation table includes the target steady-state valve opening degrees of the electronic expansion valve corresponding to different temperature ranges and the compressor operating frequencies under the air conditioner steady state, and the relation table is statistically determined based on the historical steady-state valve opening degrees corresponding to different temperature ranges and the compressor operating frequencies under the air conditioner steady state.

6. An air conditioner, characterized in that, Including the electronic expansion valve control device according to claim 5.

7. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, the electronic expansion valve control method according to any one of claims 1 to 4 is implemented.

8. A non - transitory computer - readable storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by the processor, the electronic expansion valve control method according to any one of claims 1 to 4 is implemented.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, the electronic expansion valve control method according to any one of claims 1 to 4 is implemented.

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