An electronic expansion valve control method, device, computer equipment and air conditioner

Abstract

The embodiment of the present application provides an electronic expansion valve control method, device, computer equipment and air conditioner, the method comprises the following steps: obtaining the outdoor environment temperature in response to the starting instruction, determining the initial opening degree of the target electronic expansion valve based on the outdoor environment temperature and continuing for the first time; calculating the first opening degree of the target electronic expansion valve, adjusting the target electronic expansion valve based on the first opening degree until the stable operation condition is met. The method provided by the embodiment of the present application can guarantee the oil return amount through the opening degree adjustment of the electronic expansion valve, so that the air conditioner can be normally started and operated.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and in particular to an electronic expansion valve control method, device, computer equipment, and air conditioner. Background Technology

[0002] During the operation of an air conditioning system, lubricating oil is used to provide lubrication, cooling, and sealing for the compressor. However, when the air conditioner is started and running under low external temperature conditions, insufficient oil return is likely to occur, such as low oil return volume, low oil level, and untimely oil return, which affects the safety and reliability of the air conditioner.

[0003] Under low-temperature conditions, if the outdoor unit of a variable frequency air conditioner remains off for an extended period, refrigerant deposition can easily occur. This means that a large amount of refrigerant, under the influence of pressure balance and gravity, flows back from the high-pressure and low-pressure sides into the compressor, liquefying and dissolving in the compressor oil, and may even exist in liquid form within the compressor oil chamber. Refrigerant deposition dilutes and cools the compressor oil, causing its viscosity to decrease as the oil dilution rate increases. When the compressor starts at low temperatures, the refrigerant dissolved in the oil undergoes violent agitation, easily generating a large amount of foam in the oil solution, resulting in a thinning of the lubricating oil film. The solubility of the homogeneous solution composed of refrigerant and compressor oil is directly proportional to temperature. When the temperature is below the critical temperature, the solution will separate, with the upper layer mainly consisting of compressor oil and the lower layer mainly consisting of refrigerant. This low-temperature separation phenomenon, affecting the varying degrees of oil return in the system, exists not only in the static state of oil-solution equilibrium but also in the fluid state during operation; it occurs not only within the compressor but also within heat exchangers and gas-liquid separators.

[0004] If the compressor's oil return level is too low, prolonged insufficient oil return and oil dilution will prevent the internal moving parts and their surfaces from receiving adequate lubrication. This makes it difficult to form an oil film thick enough to withstand a certain load, easily increasing wear on the moving contact surfaces. In severe cases, it can even cause the compressor to seize up, affecting its service life and operational reliability. On the other hand, a low compressor oil return level will also prevent the heat generated by the main internal heat-generating components, such as the motor windings and bearing contact surfaces, from being cooled in time, leading to compressor overheating, and even motor demagnetization or burnout, affecting the safety of compressor operation.

[0005] Due to the above factors, low-temperature air conditioning systems generally suffer from oil shortage during low-temperature placement, temperature point start-up, and start-up processes, which affects the normal operation of the air conditioning system. Summary of the Invention

[0006] To address the problem of insufficient oil return during low-temperature startup in existing air conditioners, this application provides an electronic expansion valve control method, device, computer equipment, and air conditioner, which can ensure the amount of oil return by adjusting the opening of the electronic expansion valve, thereby enabling the air conditioner to start and operate normally.

[0007] On one hand, an electronic expansion valve control method is provided, the method comprising:

[0008] The system responds to the power-on command, acquires the outdoor ambient temperature, determines the initial opening of the target electronic expansion valve based on the outdoor ambient temperature, and maintains it for a first duration.

[0009] Calculate the first opening degree of the target electronic expansion valve, and adjust the target electronic expansion valve based on the first opening degree until the stable operating conditions are met.

[0010] In some embodiments, obtaining the outdoor ambient temperature in response to a power-on command includes:

[0011] The system responds to the power-on command to determine the operating mode. If the current operating mode is heating mode, it executes the step of obtaining the outdoor ambient temperature.

[0012] In some embodiments, determining the initial opening of the target electronic expansion valve based on the outdoor ambient temperature includes:

[0013] Based on the pre-stored correspondence between temperature range and initial opening degree, and the outdoor ambient temperature, the initial opening degree of the target electronic expansion valve is determined.

[0014] In some embodiments, calculating the first opening degree of the electronic expansion valve includes:

[0015] The first opening degree is calculated based on the opening degree calculation formula;

[0016] The opening degree calculation formula includes: K 制热 =A×f+[BC×(T) 内环 -T 外环 )]+K 补偿 ;

[0017] Among them, K 制热 The first opening degree is given by A, where A is the proportional coefficient, f is the compressor operating frequency, B is a constant in valve steps, C is the proportional coefficient, and T is the valve step number. 内环 Indoor ambient temperature, T 外环 Outdoor ambient temperature, K 补偿 For valve step compensation.

[0018] In some embodiments, adjusting the target electronic expansion valve based on the first opening until stable operating conditions are met includes:

[0019] The first opening is recalculated every second time interval;

[0020] Adjust the target electronic expansion valve based on the updated first opening until stable operating conditions are met.

[0021] In some embodiments, the stable operating conditions include:

[0022] The temperature difference between the exhaust temperature and the compressed air temperature of the air conditioner is greater than or equal to 10℃.

[0023] On the other hand, an electronic expansion valve control device is provided, the device comprising:

[0024] The initial opening adjustment module is used to obtain the outdoor ambient temperature in response to the power-on command, determine the initial opening of the target electronic expansion valve based on the outdoor ambient temperature, and maintain it for a first duration.

[0025] The first opening adjustment module is used to calculate the first opening of the target electronic expansion valve and adjust the target electronic expansion valve based on the first opening until the stable operating conditions are met.

[0026] In some embodiments, the initial opening adjustment module is specifically used for:

[0027] The system responds to the power-on command to determine the operating mode. If the current operating mode is heating mode, it executes the step of obtaining the outdoor ambient temperature.

[0028] In some embodiments, the initial opening adjustment module is specifically used for:

[0029] Based on the pre-stored correspondence between temperature range and initial opening degree, and the outdoor ambient temperature, the initial opening degree of the target electronic expansion valve is determined.

[0030] In some embodiments, the first opening adjustment module is specifically used for:

[0031] The first opening degree is calculated based on the opening degree calculation formula;

[0032] The opening degree calculation formula includes: K 制热 =A×f+[BC×(T) 内环 -T 外环 )]+K 补偿 ;

[0033] Among them, K 制热 The first opening degree is given by A, where A is the proportional coefficient, f is the compressor operating frequency, B is a constant in valve steps, C is the proportional coefficient, and T is the valve step number. 内环 Indoor ambient temperature, T 外环 Outdoor ambient temperature, K 补偿 For valve step compensation.

[0034] In some embodiments, the first opening adjustment module is specifically used for:

[0035] The first opening is recalculated every second time interval;

[0036] Adjust the target electronic expansion valve based on the updated first opening until stable operating conditions are met.

[0037] In some embodiments, the stable operating conditions include:

[0038] The temperature difference between the exhaust temperature and the compressed air temperature of the air conditioner is greater than or equal to 10℃.

[0039] On the other hand, a computer device is provided, which includes a processor and a memory. The memory stores at least one instruction, at least one program, code set, or instruction set. The processor can load and execute at least one instruction, at least one program, code set, or instruction set to implement the electronic expansion valve control method provided in the above-mentioned embodiments.

[0040] On the other hand, a computer-readable storage medium is provided, which stores at least one instruction, at least one program, code set, or instruction set. A processor can load and execute at least one instruction, at least one program, code set, or instruction set to implement the electronic expansion valve control method provided in the embodiments of this application.

[0041] On the other hand, a computer program product or computer program is provided, the computer program product or computer program including computer program instructions stored in a computer-readable storage medium. A processor reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the electronic expansion valve control method described in any of the above embodiments.

[0042] The beneficial effects of the technical solution provided in this application include at least the following: Embodiments of the present invention provide an electronic expansion valve control method, device, computer equipment, and air conditioner. The method includes acquiring the outdoor ambient temperature in response to a start-up command; determining the initial opening degree of a target electronic expansion valve based on the outdoor ambient temperature and maintaining it for a first duration; calculating the first opening degree of the target electronic expansion valve; and adjusting the target electronic expansion valve based on the first opening degree until stable operating conditions are met. The method provided by embodiments of the present invention can ensure the oil return volume through the adjustment of the opening degree of the electronic expansion valve, thereby enabling the air conditioner to start and operate normally. 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 accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A schematic diagram illustrating the implementation flow of an electronic expansion valve control method provided in an exemplary embodiment of this application is shown.

[0045] Figure 2 This illustration shows another implementation flow diagram of an electronic expansion valve control method provided in an exemplary embodiment of this application;

[0046] Figure 3 This illustration shows another implementation flow diagram of an electronic expansion valve control method provided in an exemplary embodiment of this application;

[0047] Figure 4 This application shows a structural diagram of an electronic expansion valve control device provided in an exemplary embodiment;

[0048] Figure 5 This illustration shows a schematic diagram of the structure of a computer device corresponding to an electronic expansion valve control method provided in an exemplary embodiment of this application;

[0049] Figure 6 A schematic diagram of an air conditioner structure corresponding to an electronic expansion valve control method provided in an exemplary embodiment of this application is shown. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0051] The electronic expansion valve control method provided in this application can ensure the return oil volume by adjusting the opening degree of the electronic expansion valve, so as to enable the air conditioner to start and operate normally.

[0052] Example 1

[0053] The low-temperature oil return strategy of the variable frequency air conditioning compressor is crucial for the normal operation of the air conditioning system. The initial opening and start-up adjustment of the electronic expansion valve are particularly important. During the unstable transition phase of low-temperature start-up, the refrigerant mass flow rate and exhaust temperature are highly sensitive to the opening control of the electronic expansion valve. Proper opening adjustment facilitates a gradual increase in exhaust temperature while keeping oil level fluctuations within a certain range. However, if the oil level drops significantly faster or the oil return time exceeds the limit during the exhaust temperature rise phase, it indicates that the throttling amplitude of the electronic expansion valve is too large, resulting in poor oil return performance, necessitating opening control adjustments.

[0054] Figure 1 The diagram illustrates the implementation flow of an electronic expansion valve control method provided by an embodiment of the present invention.

[0055] See Figure 1 The electronic expansion valve control method provided in this embodiment of the invention may include steps 101 to 102.

[0056] Step 101: Respond to the power-on command to obtain the outdoor ambient temperature, determine the initial opening degree of the target electronic expansion valve based on the outdoor ambient temperature, and maintain it for a first duration.

[0057] In some embodiments, step 101 includes:

[0058] The system responds to the power-on command to determine the operating mode. If the current operating mode is heating mode, it executes the step of obtaining the outdoor ambient temperature.

[0059] Specifically, since this solution is applicable to low-temperature outdoor conditions, the electronic expansion valve control method provided in this embodiment of the invention is executed when the user selects the heating mode. Furthermore, it can also receive other settings from the user, such as the fan speed.

[0060] Specifically, to ensure user comfort and avoid blowing cold air onto users in heating mode, the start-up process can include immediate start of the outdoor fan, followed by a 3-second delay before the compressor starts if there are no system malfunctions. The compressor starts at the lowest frequency, and the indoor fan operates according to the start-up anti-cold air control, that is, the fan waits for the temperature of the inner heat exchanger tubes to rise to a certain temperature before starting to avoid cold air.

[0061] In some embodiments, step 101 includes:

[0062] Based on the pre-stored correspondence between temperature range and initial opening degree, and the outdoor ambient temperature, the initial opening degree of the target electronic expansion valve is determined.

[0063] Table 1 shows the correspondence between the pre-stored outdoor temperature range and the initial opening degree of the electronic expansion valve in the embodiments of the present invention. The lower the outdoor ambient temperature, the larger the opening degree of the heating electronic expansion valve, and the opening degree of the electronic expansion valve ranges from 100 to 480 steps.

[0064] Table 1

[0065]

[0066] In some embodiments, step 102 includes:

[0067] The first opening degree is calculated based on the opening degree calculation formula;

[0068] The opening degree calculation formula includes: K 制热 =A×f+[BC×(T) 内环 -T 外环 )]+K 补偿 ;

[0069] Among them, K 制热 The first opening degree is given by A, where A is the proportional coefficient, f is the compressor operating frequency, B is a constant in valve steps, C is the proportional coefficient, and T is the valve step number. 内环 Indoor ambient temperature, T 外环 Outdoor ambient temperature, K 补偿 For valve step compensation.

[0070] Table 2 shows the correspondence between the pre-stored outdoor temperature range and the electronic expansion valve compensation opening in the embodiments of the present invention. The lower the outdoor ambient temperature, the larger the opening of the heating electronic expansion valve, and the opening value of the electronic expansion valve ranges from 100 to 480 steps.

[0071] Table 2

[0072]

[0073] In some embodiments, step 102 includes:

[0074] The first opening is recalculated every second time interval;

[0075] Adjust the target electronic expansion valve based on the updated first opening until stable operating conditions are met.

[0076] In some embodiments, the stable operating conditions include:

[0077] The temperature difference between the exhaust temperature and the compressed air temperature of the air conditioner is greater than or equal to 10℃.

[0078] In some embodiments, the stable operating conditions further include:

[0079] The execution time of step 102 has reached the third duration.

[0080] Furthermore, once the air conditioner enters a stable operating state, during the control phase of the electronic expansion valve in this stable operation process, the target opening degree of the electronic expansion valve is automatically adjusted based on the target suction superheat, with a calculation and update cycle of T2. When the target suction superheat is high, the heating electronic expansion valve is adjusted larger; when the target suction superheat is insufficient, the heating electronic expansion valve is adjusted smaller.

[0081] The method provided in this invention includes three stages of the operation of the electronic expansion valve during the air conditioning heating process: the electronic expansion valve initialization stage, the electronic expansion valve anti-oil shortage stage, and the electronic expansion valve control stage during stable operation. It can promote oil return by adjusting the opening degree of the electronic expansion valve in each stage, thereby ensuring the normal operation of the air conditioner.

[0082] The electronic expansion valve control method provided in this invention establishes a valve step compensation control method for the electronic expansion valve under different operating conditions in the heating mode of an air conditioning system. It integrates system pressure difference and compressor frequency, ensuring appropriate throttling amplitude and good oil return during the start-up phase. While ensuring rapid establishment of exhaust superheat, it also guarantees that the compressor oil level remains above the safe level. This method has strong universality and is widely applicable to rectifying low-temperature oil shortage problems in both integrated air conditioning systems and split-type air conditioning systems.

[0083] Example 2

[0084] Figure 2 This diagram illustrates another implementation flow of the electronic expansion valve control method provided in this embodiment of the invention.

[0085] See Figure 2 In a specific example, the implementation process of the electronic expansion valve control method provided in this embodiment of the invention during the electronic expansion valve initialization stage is as follows.

[0086] After powering on, the user selects the operating mode, performs user-defined settings, and then the boot process begins.

[0087] Specifically, the startup procedure includes a 3-second delay before the compressor starts, and the indoor fan operates according to the anti-cold air control. The electronic expansion valve enters the initialization phase, detects the outdoor ambient temperature, and performs classification processing based on the outdoor ambient temperature. Specifically, based on the outdoor ambient temperature T... 外环 Set the corresponding opening degree K of the heating electronic expansion valve for the specified range. 制热初始 If the outdoor ambient temperature T 外环 If it is less than or equal to -30℃, then it corresponds to K 制热初始1 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to -15℃ and greater than -30℃, then the corresponding temperature is K. 制热初始2 If the outdoor ambient temperature T 外环If the temperature is less than or equal to 0℃ and greater than -15℃, then the corresponding temperature is K. 制热初始3 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to 10℃ and greater than 0℃, then the corresponding temperature is K. 制热初始4 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to 24℃ and greater than 10℃, then the corresponding temperature is K. 制热初始5 .

[0088] If the initial heating time t1 meets the preset conditions, the next stage will begin; otherwise, the outdoor temperature will be re-detected for initial heating.

[0089] Figure 3 This diagram illustrates another implementation flow of the electronic expansion valve control method provided in this embodiment of the invention.

[0090] See Figure 3 In a specific example, the implementation process of the electronic expansion valve control method provided in this embodiment of the invention during the anti-oil-shortage stage of the electronic expansion valve is as follows.

[0091] After entering the electronic expansion valve's anti-oil-shortage phase, the outdoor ambient temperature is detected, and the system is categorized and processed according to the range of the outdoor ambient temperature. If the outdoor ambient temperature T... 外环 If the temperature is less than or equal to -30℃, the corresponding opening degree K of the heating electronic expansion valve is... 补偿1 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to -15℃ and greater than -30℃, then the corresponding temperature is K. 补偿2 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to 0℃ and greater than -15℃, then the corresponding temperature is K. 补偿3 If the outdoor ambient temperature T 外环 If it is greater than 0℃, then it corresponds to K 补偿4 .

[0092] Further calculation of heating K 制热 =Af+[BC(T) 内环 -T 外环 )]+K 补偿 Where A and C are proportionality coefficients, and B is a constant, with the unit being the number of valve steps;

[0093] If T 排气温度 -T 高压 If the temperature is ≥10℃, or the electronic expansion valve reaches its maximum oil shortage prevention stage t2, then the electronic expansion valve control stage will begin during stable operation.

[0094] During the stable operation phase, the target opening degree of the electronic expansion valve is automatically adjusted based on the target intake superheat, with a calculation and update cycle of T2. When the target intake superheat is high, the heating electronic expansion valve is adjusted larger; when the target intake superheat is insufficient, the heating electronic expansion valve is adjusted smaller.

[0095] In summary, the electronic expansion valve control method provided by the embodiments of the present invention can ensure the return oil volume by adjusting the opening degree of the electronic expansion valve, so as to enable the air conditioner to start and operate normally.

[0096] Example 3

[0097] Figure 4 A schematic diagram of the electronic expansion valve control device provided in an embodiment of the present invention is shown.

[0098] See Figure 4 The electronic expansion valve control device provided in this embodiment of the invention may include:

[0099] The initial opening adjustment module 201 is used to obtain the outdoor ambient temperature in response to the power-on command, determine the initial opening of the target electronic expansion valve based on the outdoor ambient temperature, and maintain it for a first duration.

[0100] The first opening adjustment module 202 is used to calculate the first opening of the target electronic expansion valve and adjust the target electronic expansion valve based on the first opening until the stable operating conditions are met.

[0101] In some embodiments, the initial opening adjustment module is specifically used for:

[0102] The system responds to the power-on command to determine the operating mode. If the current operating mode is heating mode, it executes the step of obtaining the outdoor ambient temperature.

[0103] In some embodiments, the initial opening adjustment module is specifically used for:

[0104] Based on the pre-stored correspondence between temperature range and initial opening degree, and the outdoor ambient temperature, the initial opening degree of the target electronic expansion valve is determined.

[0105] In some embodiments, the first opening adjustment module is specifically used for:

[0106] The first opening degree is calculated based on the opening degree calculation formula;

[0107] The opening degree calculation formula includes: K 制热 =A×f+[BC×(T) 内环 -T 外环 )]+K 补偿 ;

[0108] Among them, K 制热The first opening degree is given by A, where A is the proportional coefficient, f is the compressor operating frequency, B is a constant in valve steps, C is the proportional coefficient, and T is the valve step number. 内环 Indoor ambient temperature, T 外环 Outdoor ambient temperature, K 补偿 For valve step compensation.

[0109] In some embodiments, the first opening adjustment module is specifically used for:

[0110] The first opening is recalculated every second time interval;

[0111] Adjust the target electronic expansion valve based on the updated first opening until stable operating conditions are met.

[0112] In some embodiments, the stable operating conditions include:

[0113] The temperature difference between the exhaust temperature and the compressed air temperature of the air conditioner is greater than or equal to 10℃.

[0114] In summary, the electronic expansion valve control device provided in this embodiment of the invention can ensure the return oil volume by adjusting the opening degree of the electronic expansion valve, so as to enable the air conditioner to start and operate normally.

[0115] Example 4

[0116] Figure 5 This application shows a schematic diagram of the structure of a computer device provided in an exemplary embodiment, the computer device comprising:

[0117] The processor 301 includes one or more processing cores. The processor 301 executes various functional applications and data processing by running software programs and modules.

[0118] The receiver 302 and transmitter 303 can be implemented as a communication component, which can be a communication chip. Optionally, this communication component can include signal transmission functionality. That is, the transmitter 303 can be used to transmit control signals to the image acquisition device and the scanning device, and the receiver 302 can be used to receive corresponding feedback commands.

[0119] The memory 304 is connected to the processor 301 via the bus 305.

[0120] The memory 304 can be used to store at least one instruction, and the processor 301 is used to execute the at least one instruction to implement steps 101 to 102 in the above-described embodiment of the electronic expansion valve control method.

[0121] Those skilled in the art will understand that Figure 5This is merely an example of a computer device and does not constitute a limitation on the computer device. It may include more or fewer components than shown, or combine certain components, or different components. For example, the computer device may also include network access devices, etc.

[0122] The processor 301 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0123] The memory 304 can be an internal storage unit of the computer device, such as a hard drive or RAM. The memory 304 can also be an external storage device of the computer device, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, the memory 304 can include both internal and external storage units. The memory 304 is used to store the computer program and other programs and data required by the terminal device. The memory 304 can also be used to temporarily store data that has been output or will be output.

[0124] Example 5

[0125] This application also provides an air conditioner, including the computer device described above.

[0126] Optional, the air conditioner includes a packaged air conditioner.

[0127] Figure 6 A schematic diagram of an air conditioner structure applying the method provided in an embodiment of the present invention is shown.

[0128] See Figure 6 In some embodiments, the air conditioner includes a compressor assembly, a condenser assembly, an evaporator assembly, an expansion valve assembly, and a four-way valve assembly.

[0129] The condenser assembly includes a condenser, a condenser outlet temperature sensor, a condenser inlet temperature sensor, and an outer ring temperature sensor.

[0130] The expansion valve assembly includes a heating electronic expansion valve, a cooling electronic expansion valve, an enthalpy-increasing electronic expansion valve, a switching plate, a switching plate gas outlet temperature sensing bulb, and a switching plate gas inlet temperature sensing bulb.

[0131] The evaporator assembly includes an evaporator, an evaporator inlet temperature sensor, an evaporator outlet temperature sensor, and an inner ring temperature sensor.

[0132] The compressor assembly includes a compressor, a gas separator, and a compressor exhaust temperature sensing bulb, wherein the compressor is equipped with a compressor electric heating belt.

[0133] The four-way valve assembly includes a four-way valve, a high-pressure sensor, a high-pressure switch, and a low-pressure sensor.

[0134] Specifically, the condenser output is split into two paths after passing through the heating electronic expansion valve. The first path connects to the evaporator input via the cooling electronic expansion valve, and the second path connects to the compressor after passing through the enthalpy-increasing electronic expansion valve and a pressure plate. The evaporator output is connected to the first end of a four-way valve. The low-pressure end of the four-way valve connects to the compressor input via a gas separator. The compressor output is connected to the high-pressure end of the four-way valve, and the second end of the four-way valve connects to the condenser input. The condenser inlet temperature sensor is located at the condenser input end, the condenser outlet temperature sensor is located at the condenser output end, and the outer ring temperature sensor is located on the condenser. The plate changer gas inlet temperature sensor is located at the plate changer input end, and the plate changer gas outlet temperature sensor is located at the plate changer output end. The evaporator inlet temperature sensor is located at the evaporator output end, the evaporator outlet temperature sensor is located at the evaporator input end, and the inner ring temperature sensor is located on the evaporator. The exhaust temperature sensor is located at the compressor output end. The high-pressure switch and high-pressure sensor are located between the compressor output end and the high-pressure end of the four-way valve, and the low-pressure sensor is located between the low-pressure end of the four-way valve and the gas separator.

[0135] Example 6

[0136] This application also provides a computer-readable storage medium storing at least one instruction, at least one program, code set, or instruction set, which can be loaded and executed by a processor to implement the above-described electronic expansion valve control method.

[0137] Optionally, the computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), solid-state drives (SSDs), or optical discs, etc. The random access memory may include resistive random access memory (ReRAM) and dynamic random access memory (DRAM).

[0138] Example 7

[0139] This application also provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform any of the electronic expansion valve control methods described in the above embodiments.

[0140] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the implementation.

[0141] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0142] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

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

[0144] The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include any entity or device capable of carrying the computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0145] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A method for controlling an electronic expansion valve, characterized in that, The method includes: The system responds to the power-on command, acquires the outdoor ambient temperature, determines the initial opening of the target electronic expansion valve based on the outdoor ambient temperature, and maintains it for a first duration. Calculate the first opening degree of the target electronic expansion valve, and adjust the target electronic expansion valve based on the first opening degree until the stable operating conditions are met; The step of obtaining the outdoor ambient temperature in response to the power-on command includes: The system responds to the power-on command and determines the operating mode. If the current operating mode is heating mode, it executes the step of obtaining the outdoor ambient temperature. The calculation of the first opening degree of the electronic expansion valve includes: The first opening degree is calculated based on the opening degree calculation formula; The opening degree calculation formula includes: K 制热 =A×f+[BC×(T 内环 -T 外环 )]+K 补偿 ; Among them, K 制热 The first opening degree is given by A, where A is the proportional coefficient, f is the compressor operating frequency, B is a constant in valve steps, C is the proportional coefficient, and T is the compressor operating frequency. 内环 Indoor ambient temperature, T 外环 Outdoor ambient temperature, K 补偿 Valve step compensation; K 补偿 The value is determined as follows: if the outdoor ambient temperature T 外环 If the temperature is less than or equal to -30℃, the corresponding opening degree K of the heating electronic expansion valve is... 补偿1 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to -15℃ and greater than -30℃, then the corresponding temperature is K. 补偿2 If the outdoor ambient temperature T 外环 If the temperature is less than or equal to 0℃ and greater than -15℃, then the corresponding temperature is K. 补偿3 If the outdoor ambient temperature T 外环 If it is greater than 0℃, then it corresponds to K 补偿4 .

2. The method according to claim 1, characterized in that, Determining the initial opening of the target electronic expansion valve based on the outdoor ambient temperature includes: Based on the pre-stored correspondence between temperature range and initial opening degree, and the outdoor ambient temperature, the initial opening degree of the target electronic expansion valve is determined.

3. The method according to claim 1, characterized in that, The step of adjusting the target electronic expansion valve based on the first opening degree until stable operating conditions are met includes: The first opening is recalculated every second time interval; Adjust the target electronic expansion valve based on the updated first opening until stable operating conditions are met.

4. The method according to claim 1, characterized in that, The stable operating conditions include: The duration of the execution step "recalculate the first opening degree every second time interval; adjust the target electronic expansion valve based on the updated first opening degree until stable operating conditions are met" is greater than the third time interval.

5. An electronic expansion valve control device for implementing the electronic expansion valve control method according to any one of claims 1-4, characterized in that, The device includes: The initial opening adjustment module is used to obtain the outdoor ambient temperature in response to the power-on command, determine the initial opening of the target electronic expansion valve based on the outdoor ambient temperature, and maintain it for a first duration. The first opening adjustment module is used to calculate the first opening of the target electronic expansion valve and adjust the target electronic expansion valve based on the first opening until the stable operating conditions are met.

6. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one instruction, at least one program, code set, or instruction set, the at least one instruction, at least one program, code set, or instruction set being loaded and executed by the processor to implement the electronic expansion valve control method as described in any one of claims 1 to 4.

7. An air conditioner, characterized in that, Includes the computer device as described in claim 6.

8. A computer-readable storage medium, characterized in that, The readable storage medium stores at least one instruction, at least one program, code set, or instruction set, which is loaded and executed by a processor to implement the electronic expansion valve control method as described in any one of claims 1 to 4.

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