Electronic expansion valve control method and device, storage medium and air conditioner

Abstract

The invention discloses an electronic expansion valve control method and device, a storage medium and an air conditioner, and relates to the technical field of air conditioners, the air conditioner comprises a compressor and an evaporator, an exhaust port of the compressor communicates with an inlet of the evaporator through a refrigerant auxiliary road, and an auxiliary electronic expansion valve is arranged on the refrigerant auxiliary road; the electronic expansion valve control method comprises the steps that if it is detected that the current operation working condition is the low-temperature operation working condition, the indoor pipe temperature is obtained; the data sampling duration corresponding to the indoor pipe temperature is determined; according to the indoor pipe temperature and the data sampling duration, the preset action of the auxiliary electronic expansion valve is determined; and the auxiliary electronic expansion valve is controlled to execute preset actions. The low-temperature refrigeration stability of the air conditioner can be improved, and the use experience of a user is improved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to a control method and device for an electronic expansion valve, a storage medium, and an air conditioner. Background Art

[0002] When an air conditioner operates under low-temperature conditions, due to the decrease in the evaporation capacity of the air-conditioning system caused by the decrease in indoor temperature, the temperature of the flowing refrigerant is relatively low, which easily triggers the anti-freezing protection of the air conditioner, resulting in the inability of the entire air conditioner to operate stably and reliably and provide a stable refrigeration capacity output.

[0003] Currently, in related technologies, the low-temperature refrigeration stability of air conditioners is usually improved by adjusting the operating frequency of the compressor, etc. However, the current methods often have limited effects, resulting in poor user experience. Summary of the Invention

[0004] The embodiments of this application provide a solution that can effectively improve the low-temperature refrigeration stability of air conditioners and enhance the user experience.

[0005] The embodiments of this application provide the following technical solutions:

[0006] According to an embodiment of this application, a control method for an electronic expansion valve is applicable to an air conditioner. The air conditioner includes a compressor and an evaporator. The exhaust port of the compressor is communicated with the inlet of the evaporator through a refrigerant bypass. A secondary electronic expansion valve is provided on the refrigerant bypass. The method includes: if it is detected that the current operating condition is a low-temperature operating condition, obtaining the indoor pipe temperature; determining the data sampling duration corresponding to the indoor pipe temperature; determining a preset action of the secondary electronic expansion valve according to the indoor pipe temperature and the data sampling duration; and controlling the secondary electronic expansion valve to execute the preset action.

[0007] In some embodiments of this application, the determining the preset action of the secondary electronic expansion valve according to the indoor pipe temperature and the data sampling duration includes: determining a preset temperature range where the indoor pipe temperature is located; determining a preset time range where the data sampling duration is located; and obtaining the preset action of the secondary electronic expansion valve according to the preset temperature range and the preset time range.

[0008] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range includes: if the preset temperature range is the first temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range; if the preset temperature range is the first temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range; if the preset temperature range is the first temperature range and the preset time range is the third time range, the preset action is to continuously increase the opening degree of the auxiliary electronic expansion valve; if the preset temperature range is the first temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the first temperature range is the lowest of the preset temperature ranges, the first time range to the fourth time range increase in sequence, and the second opening degree range is lower than the third opening degree range.

[0009] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: if the preset temperature range is the second temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range; if the preset temperature range is the second temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range; if the preset temperature range is the second temperature range and the preset time range is the third time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range; if the preset temperature range is the second temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the first opening degree range is lower than the second opening degree range, and the second temperature range is higher than the first temperature range.

[0010] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: if the preset temperature range is the third temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range; if the preset temperature range is the third temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the third temperature range is higher than the second temperature range.

[0011] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: if the preset temperature range is the fourth temperature range and the preset time range is the first time range, the preset action is to close the auxiliary electronic expansion valve; if the preset temperature range is the fourth temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the fourth temperature range is higher than the third temperature range.

[0012] In some embodiments of the present application, the step of obtaining the indoor pipe temperature when detecting that the current operating condition is a low-temperature operating condition includes: when it is detected that the outdoor ambient temperature and the indoor ambient temperature meet the predetermined low-temperature refrigeration conditions, determining that the current operating condition is the low-temperature operating condition; and obtaining the indoor pipe temperature.

[0013] According to an embodiment of the present application, an electronic expansion valve control device includes: a memory storing a computer program; and a processor reading the computer program stored in the memory to execute the method described in the embodiments of the present application.

[0014] According to another embodiment of the present application, a storage medium stores a computer program, and when the computer program is executed by a processor of an electronic expansion valve control device, the computer is caused to execute the method described in the embodiments of the present application.

[0015] According to another embodiment of the present application, a heat pump device may include an electronic expansion valve control device.

[0016] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. A processor of an electronic expansion valve control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic expansion valve control device executes the methods provided in various alternative implementation manners described in the embodiments of the present application.

[0017] In the embodiments of the present application, an air conditioner includes a compressor and an evaporator. The exhaust port of the compressor is communicated with the inlet of the evaporator through a refrigerant auxiliary circuit, and an auxiliary electronic expansion valve is provided on the refrigerant auxiliary circuit. The electronic expansion valve control method includes: if it is detected that the current operating condition is a low-temperature operating condition, obtaining the indoor pipe temperature; determining the data sampling duration corresponding to the indoor pipe temperature; determining the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration; and controlling the auxiliary electronic expansion valve to execute the preset action.

[0018] In this way of the embodiment of the present application, the exhaust port of the compressor is communicated with the inlet of the evaporator through a refrigerant auxiliary circuit, and an auxiliary electronic expansion valve is arranged on the refrigerant auxiliary circuit. By obtaining the indoor pipe temperature and determining the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration, and controlling the auxiliary electronic expansion valve to execute the preset action. Through the setting of the refrigerant auxiliary circuit, it is controlled that the high-temperature refrigerant discharged from the compressor directly enters the evaporator, ensuring that the heat of the high-temperature refrigerant does not dissipate through the condenser. By adjusting the opening degree of the auxiliary electronic expansion valve to control the amount of refrigerant entering the evaporator, the mixing of the high-temperature refrigerant entering the evaporator and the circulating refrigerant entering the evaporator in the air conditioner can be reasonably controlled, so that the pressure of the evaporator remains stable, effectively improving the stability of the air conditioner in low-temperature refrigeration and enhancing the user experience. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 The flowchart of the electronic expansion valve control method according to an embodiment of the present application is shown.

[0021] Figure 2 The system structure diagram of an air conditioner according to an embodiment of the present application is schematically shown.

[0022] Figure 3 The block diagram of the electronic expansion valve control device according to an embodiment of the present application is shown.

[0023] Figure 4 The block diagram of an air conditioner according to an embodiment of the present application is shown. Detailed Description of the Embodiments

[0024] The following further details the present disclosure in conjunction with the drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not used to limit the present disclosure. In addition, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than all embodiments for implementing the present disclosure. Without conflict, the technical solutions described in the embodiments of the present disclosure can be implemented in any combination.

[0025] It should be noted that in the embodiments of the present disclosure, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a method or apparatus including a series of elements not only includes the elements explicitly recited, but also includes other elements not explicitly listed, or further includes elements inherent to the implementation of the method or apparatus. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional related elements in the method or apparatus including such element (such as steps in a method or units in an apparatus, and the units can be part of a circuit, part of a processor, part of a program or software, etc.).

[0026] For example, the electronic expansion valve control method provided by the embodiments of the present disclosure includes a series of steps, but the electronic expansion valve control method provided by the embodiments of the present disclosure is not limited to the recited steps. Similarly, the electronic expansion valve control device provided by the embodiments of the present disclosure includes a series of units, but the device provided by the embodiments of the present disclosure is not limited to including the explicitly recited units, and may further include units required for obtaining relevant information or processing based on the information.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0028] It can be understood that in the specific implementation of this application, when related data is involved and the embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use, and processing of related data need to comply with relevant laws, regulations, and standards.

[0029] Figure 1 The flowchart of the electronic expansion valve control method according to an embodiment of the present application is schematically shown. The execution subject of the electronic expansion valve control method can be an electronic expansion valve control device with processing capabilities, and the electronic expansion valve control device can be provided in devices such as air conditioners, mobile phones, computers, smart watches, and other household appliances. The electronic expansion valve control device can at least include a memory and a processor.

[0030] In a specific embodiment of the present application, the electronic expansion valve control device as the execution subject of the electronic expansion valve control method is specifically provided in an air conditioner. The electronic expansion valve control device can include a processor and a memory. A computer program is stored in the memory, and the processor can read the computer program stored in the memory to execute the methods of the embodiments of the present application.

[0031] Figure 2Schematically shows a system structure diagram of an air conditioner according to an embodiment of the present application. As Figure 2 shown, the air conditioner 200 may include a condenser 210, an evaporator 220, a four-way valve 230, a compressor 240, and a liquid storage tank 250. Among them, the outlet of the condenser 210 is connected to the inlet of the evaporator 220 through a throttling expansion valve (the main electronic expansion valve for throttling) 260. The exhaust port of the compressor 240 is connected to port D of the four-way valve 230. The suction port of the compressor 240 is connected to port S of the four-way valve 230 through the liquid storage tank 250. The inlet of the condenser 210 is connected to port C of the four-way valve 230. The outlet of the evaporator 220 is connected to port E of the four-way valve 230.

[0032] Furthermore, in the embodiment of the present application, as Figure 2 shown, further connect the exhaust port of the compressor 240 to the inlet of the evaporator 220 through a refrigerant auxiliary circuit 280, and a secondary electronic expansion valve (the main electronic expansion valve for low-temperature operating conditions) 270 is provided on the refrigerant auxiliary circuit 280, that is, port D of the four-way valve 230 is connected to the inlet of the evaporator 220 through the refrigerant auxiliary circuit 280.

[0033] Referring to Figure 1 and Figure 2 shown, the electronic expansion valve control method of the embodiment of the present application may include steps S110 to S140.

[0034] Step S110, if it is detected that the current operating condition is a low-temperature operating condition, obtain the indoor pipe temperature;

[0035] Step S120, determine the data sampling duration corresponding to the indoor pipe temperature;

[0036] Step S130, determine the preset action of the secondary electronic expansion valve according to the indoor pipe temperature and the data sampling duration;

[0037] Step S140, control the secondary electronic expansion valve to perform the preset action.

[0038] During the refrigeration process of the air conditioner, one way to detect whether the current operating condition of the air conditioner is a low-temperature operating condition is to determine that the air conditioner enters the low-temperature operating condition when receiving a low-temperature operation signal (for example, the user triggers the low-temperature operation signal through a control device); in an alternative way, it may be determined that the current operating condition of the air conditioner is a low-temperature operating condition when it is detected that the indoor ambient temperature and the outdoor ambient temperature meet the predetermined low-temperature refrigeration conditions (for example, the outdoor ambient temperature is -30°C to 20°C and the indoor ambient temperature is 5°C to 20°C).

[0039] If it is detected that the current operating condition of the air conditioner is a low-temperature operating condition, continuously sample the indoor pipe temperature. Specifically, the temperature of the indoor coil can be continuously sensed through the temperature sensor on the indoor coil of the air conditioner, so as to continuously sample the indoor pipe temperature (i.e., the temperature of the indoor coil). After sampling the indoor pipe temperature at each moment, the time difference between the sampling moment of the indoor pipe temperature and the sampling start time can be determined, and the time difference is the data sampling duration corresponding to the indoor pipe temperature.

[0040] According to the indoor pipe temperature and the data sampling duration, determine as Figure 2 the preset action of the auxiliary electronic expansion valve 270 shown, and control the auxiliary electronic expansion valve to execute the preset action. Through the preset action, the opening degree of the auxiliary electronic expansion valve can be reasonably adjusted, so that the "high-temperature refrigerant" on the exhaust port side of the compressor 240 enters the evaporator 220 through the refrigerant auxiliary path 280. Therefore, the heat of the "high-temperature refrigerant" does not dissipate through the condenser. These "high-temperature refrigerants" will be mixed with the "circulating refrigerant" that enters the evaporator 220 from the condenser 210 through the throttle expansion valve 260. By mixing the refrigerants, the pressure of the evaporator 220 can be kept stable, so that the air conditioner operates stably and the anti-freezing protection is avoided from being frequently triggered.

[0041] In short, in the way of the embodiment of the present application, the exhaust port of the compressor is communicated with the inlet of the evaporator through the refrigerant auxiliary path, and an auxiliary electronic expansion valve is arranged on the refrigerant auxiliary path. By obtaining the indoor pipe temperature and determining the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration, and controlling the auxiliary electronic expansion valve to execute the preset action. Through the setting of the refrigerant auxiliary path, it is controlled that the high-temperature refrigerant coming out of the compressor directly enters the evaporator, ensuring that the heat of the high-temperature refrigerant does not dissipate through the condenser. By adjusting the opening degree of the auxiliary electronic expansion valve to control the amount of refrigerant entering the evaporator, the amount of high-temperature refrigerant entering the evaporator in the air conditioner can be reasonably controlled to be mixed with the circulating refrigerant entering the evaporator, so that the pressure of the evaporator is kept stable, effectively improving the low-temperature refrigeration stability of the air conditioner and enhancing the user experience.

[0042] The following describes Figure 1 the further optional specific embodiments of each step when the electronic expansion valve is controlled in the embodiment.

[0043] In one embodiment, in step S130, according to the indoor pipe temperature and the data sampling duration, determining the preset action of the auxiliary electronic expansion valve may include: determining the preset temperature range where the indoor pipe temperature is located; determining the preset time range where the data sampling duration is located; and obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range.

[0044] By presetting different preset temperature ranges, such as T1 - T2, T2 - T3, T3 - T4, T4 - T5, after sampling the indoor pipe temperature T, the preset temperature range where T is located can be determined. By presetting different preset time ranges, such as t1 - t2, t2 - t3, t3 - t4, t4 - t5, after sampling the sampling duration t of the data, the preset time range where t is located can be determined.

[0045] Corresponding preset actions can be set for different preset temperature ranges and preset time ranges. The preset actions corresponding to the preset temperature range where the indoor pipe temperature is located and the preset time range where the data sampling duration is located are the preset actions of the auxiliary electronic expansion valve. For example, if the preset temperature range where the indoor pipe temperature is located is T1 - T2 and the data sampling duration is t4 - t5, the preset actions corresponding to T1 - T2 and t4 - t5 can be used as the preset actions of the auxiliary electronic expansion valve.

[0046] Optionally, in other embodiments, in step S130, to determine the preset actions of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration, it can also be determined in other ways. For example, calculation processing can be performed based on the indoor pipe temperature and the data sampling duration to obtain a temperature control value; then, the preset actions corresponding to the predetermined control value range where the temperature control value is located are determined as the preset actions of the auxiliary electronic expansion valve.

[0047] Further, in one embodiment, to obtain the preset actions of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range, it may include:

[0048] If the preset temperature range is the first temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range; if the preset temperature range is the first temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range; if the preset temperature range is the first temperature range and the preset time range is the third time range, the preset action is to continuously increase the opening degree of the auxiliary electronic expansion valve; if the preset temperature range is the first temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; where the first temperature range is the lowest preset temperature range, and the first time range to the fourth time range increase in sequence, and the second opening degree range is lower than the third opening degree range.

[0049] In this embodiment, for example, in an example shown in the following table, the preset temperature range includes a first temperature range T ≤ -2, and the first temperature range is the lowest preset temperature range. The preset time range may include a first time range 3 < t ≤ 6, a second time range 6 < t ≤ 9, a third time range 9 < t ≤ 12, a fourth time range (where the fourth time range may include time ranges such as 12 < t ≤ ti higher than the third time range), etc. The first time range to the fourth time range (such as the fourth time range and the remaining time ranges (...)) increase in sequence, and the second opening range (b range) is lower than the third opening range (c range). Here, the unit of t can be minute (min), and the unit of T can be degree Celsius.

[0050]

[0051] At this time, if the predetermined temperature range is the first temperature range (T ≤ -2) and the predetermined time range is the first time range (3 < t ≤ 6), the preset action is to adjust the opening of the auxiliary electronic expansion valve to the second opening range (b range). If the predetermined temperature range is the first temperature range (T ≤ -2) and the predetermined time range is the second time range (6 < t ≤ 9), the preset action is to adjust the opening of the auxiliary electronic expansion valve to the third opening range (c range).

[0052] If the predetermined temperature range is the first temperature range (T ≤ -2) and the predetermined time range is the third time range (9 < t ≤ 12), the preset action is to continuously increase the opening of the auxiliary electronic expansion valve. Specifically, continuously increasing the opening of the auxiliary electronic expansion valve can be "continuously opening wider until the actual indoor pipe temperature is greater than the predetermined pipe temperature (such as 2°C) or until the opening reaches the set maximum value".

[0053] Furthermore, if the predetermined temperature range is the first temperature range (T ≤ -2) and the predetermined time range is the fourth time range (such as time ranges like 12 < t ≤ ti), the preset action is to maintain the current opening of the auxiliary electronic expansion valve, where maintaining the current opening of the auxiliary electronic expansion valve means maintaining the opening of the auxiliary electronic expansion valve at the moment before the moment when the predetermined temperature range reaches the first temperature range (T ≤ -2) and the predetermined time range reaches the fourth time range.

[0054] Furthermore, in an embodiment, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range may further include:

[0055] If the preset temperature range is the second temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening range; if the preset temperature range is the second temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening range; if the preset temperature range is the second temperature range and the preset time range is the third time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening range; if the preset temperature range is the second temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the first opening range is lower than the second opening range, and the second temperature range is higher than the first temperature range.

[0056] In this embodiment, for example, in an example as shown in the following table, the preset temperature range includes the second temperature range -2 < T ≤ 1, and the second temperature range is higher than the first temperature range. The preset time range may include the first time range 3 < t ≤ 6, the second time range 6 < t ≤ 9, the third time range 9 < t ≤ 12, the fourth time range (wherein, the fourth time range may include time ranges such as 12 < t ≤ ti higher than the third time range), etc., and the first opening range (a range) is lower than the second opening range (b range). Wherein, the unit of t can be minute (min), and the unit of T can be degree Celsius.

[0057]

[0058] At this time, if the preset temperature range is the second temperature range (-2 < T ≤ 1) and the preset time range is the first time range (3 < t ≤ 6), the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening range (a range). If the preset temperature range is the second temperature range (-2 < T ≤ 1) and the preset time range is the second time range (6 < t ≤ 9), the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening range (b range).

[0059] If the preset temperature range is the second temperature range (-2 < T ≤ 1) and the preset time range is the third time range (9 < t ≤ 12), the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening range (c range); if the preset temperature range is the second temperature range (-2 < T ≤ 1) and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve, wherein, maintaining the current opening degree of the auxiliary electronic expansion valve means maintaining the opening degree of the auxiliary electronic expansion valve at the moment before the moment when the preset temperature range reaches the second temperature range (-2 < T ≤ 1) and the preset time range reaches the fourth time range.

[0060] Further, in an embodiment, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range may further include:

[0061] If the preset temperature range is the third temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range; if the preset temperature range is the third temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the third temperature range is higher than the second temperature range.

[0062] In this embodiment, for example, in an example shown in the following table, the preset temperature range includes the third temperature range 1 < T ≤ 3, and the third temperature range is higher than the second temperature range. The preset time range may include the first time range 3 < t ≤ 6, the second time range 6 < t ≤ 9, the third time range 9 < t ≤ 12, the fourth time range (12 < t ≤ ti and other time ranges). Wherein, the unit of t may be minute (min), and the unit of T may be degree Celsius.

[0063]

[0064] At this time, if the preset temperature range is the third temperature range (1 < T ≤ 3) and the preset time range is the first time range (3 < t ≤ 6), the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range (a range); if the preset temperature range is the third temperature range (1 < T ≤ 3) and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve, wherein, maintaining the current opening degree of the auxiliary electronic expansion valve means maintaining the state of the auxiliary electronic expansion valve at the moment before the moment when the preset temperature range reaches the third temperature range (1 < T ≤ 3) and the preset time range reaches the second time range, the third time range or the fourth time range.

[0065] Furthermore, in an embodiment, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range may further include:

[0066] If the preset temperature range is the fourth temperature range and the preset time range is the first time range, the preset action is to close the auxiliary electronic expansion valve; if the preset temperature range is the fourth temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the fourth temperature range is higher than the third temperature range.

[0067] In this embodiment, for example, in an example as shown in the following table, the preset temperature range includes a fourth temperature range of 3 < T ≤ 5, and the fourth temperature range is higher than the third temperature range. The preset time range may include a first time range of 3 < t ≤ 6, a second time range of 6 < t ≤ 9, a third time range of 9 < t ≤ 12, a fourth time range (such as 12 < t ≤ ti, etc.). Herein, the unit of t may be minutes (min), and the unit of T may be degrees Celsius.

[0068]

[0069] At this time, if the preset temperature range is the fourth temperature range (3 < T ≤ 5) and the preset time range is the first time range (3 < t ≤ 6), the preset action is to close the auxiliary electronic expansion valve; if the preset temperature range is the fourth temperature range (3 < T ≤ 5) and the preset time range is the second time range, the third time range, or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve. Herein, maintaining the current opening degree of the auxiliary electronic expansion valve means maintaining the opening degree of the auxiliary electronic expansion valve at the moment before the moment when the preset temperature range reaches the fourth temperature range (3 < T ≤ 5) and the preset time range reaches the second time range, the third time range, or the fourth time range.

[0070] In addition, the embodiment of the present application also provides an electronic expansion valve control device. As Figure 3 shown, Figure 3 The block diagram of the electronic expansion valve control device according to an embodiment of the present application is shown. Specifically, the electronic expansion valve control device 300 may include a processor 301 with one or more processing cores and a memory 302 with one or more computer-readable storage media.

[0071] The processor 301 may, according to instructions, load the executable files corresponding to the processes of one or more computer programs into the memory 302, and the processor 301 runs the computer programs stored in the memory 302, so as to implement various functions in the embodiments of the foregoing electronic expansion valve control method of the present application.

[0072] For example, the processor 301 may execute the following steps:

[0073] If it is detected that the current operating condition is a low-temperature operating condition, obtain the indoor pipe temperature; determine the data sampling duration corresponding to the indoor pipe temperature; determine the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration; control the auxiliary electronic expansion valve to execute the preset action.

[0074] In some embodiments of the present application, determining the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration includes: determining the preset temperature range in which the indoor pipe temperature is located; determining the preset time range in which the data sampling duration is located; and obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range.

[0075] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range includes: if the preset temperature range is the first temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range; if the preset temperature range is the first temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range; if the preset temperature range is the first temperature range and the preset time range is the third time range, the preset action is to continuously increase the opening degree of the auxiliary electronic expansion valve; if the preset temperature range is the first temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the first temperature range is the lowest preset temperature range, the first time range to the fourth time range increase in sequence, and the second opening degree range is lower than the third opening degree range.

[0076] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: if the preset temperature range is the second temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range; if the preset temperature range is the second temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range; if the preset temperature range is the second temperature range and the preset time range is the third time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range; if the preset temperature range is the second temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the first opening degree range is lower than the second opening degree range, and the second temperature range is higher than the first temperature range.

[0077] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: if the preset temperature range is the third temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range; if the preset temperature range is the third temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the third temperature range is higher than the second temperature range.

[0078] In some embodiments of the present application, obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: if the preset temperature range is the fourth temperature range and the preset time range is the first time range, the preset action is to close the auxiliary electronic expansion valve; if the preset temperature range is the fourth temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve; wherein, the fourth temperature range is higher than the third temperature range.

[0079] In some embodiments of the present application, when detecting that the current operating condition is a low-temperature operating condition and obtaining the indoor pipe temperature includes: when it is detected that the outdoor ambient temperature and the indoor ambient temperature meet the predetermined low-temperature refrigeration condition, determining that the current operating condition is the low-temperature operating condition; obtaining the indoor pipe temperature.

[0080] Those of ordinary skill in the art can understand that all or part of the steps in the above-mentioned various methods can be completed by a computer program, or by controlling related hardware through a computer program. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0081] Therefore, the embodiments of the present application further provide a storage medium, in which a computer program is stored, and the computer program can be loaded by a processor to execute the steps in any one of the methods provided by the embodiments of the present application.

[0082] Among them, the storage medium can be a computer-readable storage medium, and the storage medium can include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.

[0083] Since the computer program stored in the storage medium can execute the steps in any of the methods provided in the embodiments of the present application, the beneficial effects achievable by the methods provided in the embodiments of the present application can be realized. For details, refer to the previous embodiments and will not be elaborated herein.

[0084] In addition, referring to Figure 4 , the embodiments of the present application further provide an air conditioner. The air conditioner 400 may include an electronic expansion valve control device 300 as shown in Figure 3 and other modules 500 (such as an evaporator, a compressor, etc.).

[0085] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. A processor of the electronic expansion valve control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic expansion valve control device executes the methods provided in the various alternative implementations described in the embodiments of the present application.

[0086] After considering the specification and practicing the disclosed embodiments herein, those skilled in the art will readily conceive of other implementations of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application.

[0087] It should be understood that the present application is not limited to the embodiments described above and shown in the drawings, but various modifications and changes can be made without departing from its scope.

Claims

1. An electronic expansion valve control method, characterized in that, Applicable to an air conditioner, the air conditioner includes a compressor and an evaporator, the exhaust port of the compressor is communicated with the inlet of the evaporator through a refrigerant auxiliary circuit, and an auxiliary electronic expansion valve is arranged on the refrigerant auxiliary circuit. The method includes: If it is detected that the current operating condition is a low-temperature operating condition, obtain the indoor pipe temperature. Determine the data sampling duration corresponding to the indoor pipe temperature. Determine the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration. Control the auxiliary electronic expansion valve to execute the preset action.

2. The method according to claim 1, wherein The determining the preset action of the auxiliary electronic expansion valve according to the indoor pipe temperature and the data sampling duration includes: Determine the preset temperature range where the indoor pipe temperature is located. Determine the preset time range where the data sampling duration is located. Obtain the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range.

3. The method according to claim 2, wherein The obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range includes: If the preset temperature range is the first temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range. If the preset temperature range is the first temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range. If the preset temperature range is the first temperature range and the preset time range is the third time range, the preset action is to continuously increase the opening degree of the auxiliary electronic expansion valve. If the preset temperature range is the first temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve. Wherein, the first temperature range is the lowest preset temperature range, the first time range to the fourth time range increase in sequence, and the second opening degree range is lower than the third opening degree range.

4. The method according to claim 3, wherein The obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: If the preset temperature range is the second temperature range and the preset time range is the first time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the first opening degree range. If the preset temperature range is the second temperature range and the preset time range is the second time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the second opening degree range. If the preset temperature range is the second temperature range and the preset time range is the third time range, the preset action is to adjust the opening degree of the auxiliary electronic expansion valve to the third opening degree range. If the preset temperature range is the second temperature range and the preset time range is the fourth time range, the preset action is to maintain the current opening degree of the auxiliary electronic expansion valve. Wherein, the first opening degree range is lower than the second opening degree range, and the second temperature range is higher than the first temperature range.

5. The method according to claim 4, characterized in that Said obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: If the preset temperature range is the third temperature range and the preset time range is the first time range, the preset action is to adjust the opening of the auxiliary electronic expansion valve to the first opening range; If the preset temperature range is the third temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening of the auxiliary electronic expansion valve; Wherein, the third temperature range is higher than the second temperature range.

6. The method according to claim 5, characterized in that, Said obtaining the preset action of the auxiliary electronic expansion valve according to the preset temperature range and the preset time range further includes: If the preset temperature range is the fourth temperature range and the preset time range is the first time range, the preset action is to close the auxiliary electronic expansion valve; If the preset temperature range is the fourth temperature range and the preset time range is the second time range, the third time range or the fourth time range, the preset action is to maintain the current opening of the auxiliary electronic expansion valve; Wherein, the fourth temperature range is higher than the third temperature range.

7. The method according to claim 1, characterized in that, Said if the current operating condition is detected to be a low-temperature operating condition, obtaining the indoor pipe temperature includes: When it is detected that the outdoor ambient temperature and the indoor ambient temperature meet the predetermined low-temperature refrigeration conditions, it is determined that the current operating condition is the low-temperature operating condition; Obtain the indoor pipe temperature.

8. An electronic expansion valve control device, characterized in that, Including: A memory storing a computer program; A processor reads the computer program stored in the memory to execute the method according to any one of claims 1 to 7.

9. A storage medium, characterized in that, A computer program is stored thereon, and when the computer program is executed by the processor of the electronic expansion valve control device, the electronic expansion valve control device executes the method according to any one of claims 1 to 7.

10. An air conditioner, characterized in that, Including the electronic expansion valve control device according to claim 8.

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