Control method and device of electronic expansion valve, storage medium and air conditioner

Abstract

The application discloses a control method and device of an electronic expansion valve, a storage medium and an air conditioner, and relates to the technical field of air conditioners. The method comprises the following steps: detecting the operating frequency of a compressor, the outer pipe temperature, the high-pressure pressure and the exhaust temperature in the air conditioner; judging whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met according to the operating frequency of the compressor, the outer pipe temperature, the high-pressure pressure and the exhaust temperature; if the predetermined adjustment condition is met, calculating and updating the expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve; and controlling the operation of the electronic expansion valve according to the updated expansion valve opening degree and increasing the actual operating frequency of the compressor in the air conditioner. The application can make the compressor in the air conditioner improve the operating frequency, improve the refrigerating capacity and reliably improve the refrigerating effect of the air conditioner under the premise of reliability, thereby improving the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to a control method and device of an electronic expansion valve, a storage medium and an air conditioner. BACKGROUND

[0002] For an air conditioner using an electronic expansion valve system, at present, the electronic expansion valve is controlled to be opened large or small by detecting the difference between the actual discharge temperature and the target discharge temperature, corresponding to different compressor operating frequencies and different target discharge temperatures under different working conditions.

[0003] However, under high-temperature working conditions, the discharge temperature and the high-pressure pressure are low, but the outer pipe temperature is high. Due to the discharge temperature protection frequency limit and the outer pipe temperature protection frequency limit of the air conditioner itself, the frequency is limited, thereby causing the refrigerating capacity to decrease and the refrigerating effect to be poor, which affects the user experience. SUMMARY

[0004] The control scheme of the electronic expansion valve provided in the embodiments of the present application can increase the operating frequency of the compressor in the air conditioner under the premise of meeting the reliability, reliably improve the refrigerating effect of the air conditioner, and improve the user experience.

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

[0006] According to an embodiment of the present application, a control method of an electronic expansion valve comprises: detecting the operating frequency of a compressor, the outer pipe temperature, the high-pressure pressure and the discharge temperature in an air conditioner; judging whether a predetermined adjustment condition of an electronic expansion valve in the air conditioner is met according to the operating frequency of the compressor, the outer pipe temperature, the high-pressure pressure and the discharge temperature; if the predetermined adjustment condition is met, calculating an updated expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve; and controlling the electronic expansion valve to operate according to the updated expansion valve opening degree and increasing the actual operating frequency of the compressor in the air conditioner.

[0007] In some embodiments of the present application, the judging whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met according to the operating frequency of the compressor, the outer pipe temperature, the high-pressure pressure and the discharge temperature comprises: judging whether the operating frequency of the compressor is less than a predetermined upper limit frequency, whether the outer pipe temperature is greater than or equal to an outer pipe frequency limit temperature, whether the discharge temperature is less than a discharge frequency limit temperature, and whether the high-pressure pressure is less than a limit pressure; if all are yes, the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met.

[0008] In some embodiments of the present application, the updating the electronic expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve comprises: calculating a first opening degree calculation result according to the actual expansion valve opening degree, the outer pipe temperature and the outer pipe limited frequency temperature; and obtaining the updated electronic expansion valve opening degree according to the first opening degree calculation result.

[0009] In some embodiments of the present application, the calculating a first opening degree calculation result according to the actual expansion valve opening degree, the outer pipe temperature and the outer pipe limited frequency temperature comprises: calculating the first opening degree calculation result according to the formula B1 = B-(Tw-Tx), wherein B1 represents the opening degree calculation result, B represents the actual expansion valve opening degree, Tw represents the outer pipe temperature, and Tx represents the outer pipe limited frequency temperature.

[0010] In some embodiments of the present application, the updating the electronic expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve comprises: calculating a second opening degree calculation result according to the actual expansion valve opening degree, the outer pipe temperature, the high pressure and the exhaust temperature; and obtaining the updated electronic expansion valve opening degree according to the second opening degree calculation result.

[0011] In some embodiments of the present application, the increasing the actual operating frequency of the compressor in the air conditioner comprises: after the electronic expansion valve operates at the updated electronic expansion valve opening degree for a predetermined time length, increasing the actual operating frequency of the compressor in the air conditioner to obtain an increased operating frequency; and controlling the compressor in the air conditioner to operate at the increased operating frequency.

[0012] In some embodiments of the present application, the increasing the actual operating frequency of the compressor in the air conditioner to obtain an increased operating frequency comprises one of the following: adding the actual operating frequency of the compressor in the air conditioner to a predetermined increase value to obtain the increased operating frequency; and adding the actual operating frequency of the compressor in the air conditioner to a dynamic increase value determined according to the difference between the updated electronic expansion valve opening degree and the actual electronic expansion valve opening degree to obtain the increased operating frequency.

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

[0015] According to another embodiment of the present application, an air conditioner can comprise the control device of the electronic expansion valve as described in the embodiments of the present application.

[0016] According to another embodiment of the present application, a computer program product or computer program comprises computer instructions stored in a computer readable storage medium. The processor of the air conditioner reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to make the air conditioner perform the method provided in various optional implementations described in the embodiments of the present application.

[0017] In the embodiments of the present application, the operating frequency of the compressor, the outer tube temperature, the high pressure and the exhaust temperature in the air conditioner are detected; whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met is determined according to the operating frequency of the compressor, the outer tube temperature, the high pressure and the exhaust temperature; if the predetermined adjustment condition is met, the updated expansion valve opening degree is calculated according to the actual expansion valve opening degree of the electronic expansion valve; and the electronic expansion valve is controlled to operate according to the updated expansion valve opening degree, and the actual operating frequency of the compressor in the air conditioner is increased.

[0018] In this way, by optimizing the opening degree control of the electronic expansion valve in the air conditioner, the opening degree control of the electronic expansion valve is associated with the outer tube temperature, the high pressure and the exhaust temperature for comprehensive consideration, so as to control the electronic expansion valve and the compressor together, so that the operating frequency of the compressor in the air conditioner is increased under the premise of meeting the reliability, the refrigerating capacity is increased, the refrigerating effect of the air conditioner is reliably improved, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

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

[0021] Figure 2 A flowchart of a determination of a predetermined adjustment condition according to an embodiment of the present application is shown.

[0022] Figure 3 A flowchart of a control of a compressor according to an embodiment of the present application is shown.

[0023] Figure 4 A flowchart of a control of an electronic expansion valve according to an embodiment of the present application in a scenario is shown.

[0024] Figure 5 A block diagram of a control device of an electronic expansion valve according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] The present disclosure will be further described in details by the following embodiments with reference to the accompanying drawings. It should be understood that the embodiments provided herein are only used to explain the present disclosure and not intended to limit the present disclosure. In addition, the embodiments provided below are part of the embodiments for implementing the present disclosure, and the technical solutions described in the embodiments of the present disclosure can be implemented in any combination without conflict.

[0026] It should be noted that in the embodiments of the present disclosure, the terms "comprising", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the method or device comprising a series of elements not only includes the elements explicitly listed, but also includes other elements not explicitly listed, or includes elements inherent to the implementation of the method or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other related elements in the method or device comprising the element (for example, steps in the method or units in the device, for example, the unit can be part of the circuit, part of the processor, part of the program or software, etc.).

[0027] 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 steps described, and 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 units explicitly described, and can also include units required to be set when obtaining relevant information or processing based on information.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0029] Figure 1 A flowchart of an 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 any device with processing capability, such as an air conditioner, a computer, a mobile phone, etc.

[0030] In an embodiment of the present application, the execution subject of the control method of the electronic expansion valve is specifically an air conditioner, and the air conditioner can specifically execute the control method of the electronic expansion valve in the embodiment of the present application through a control device of the electronic expansion valve.

[0031] It can be understood that in some embodiments, the control method of the electronic expansion valve in the embodiment of the present application can be realized in combination with other devices (such as a mobile phone, a server, etc.) by the air conditioner.

[0032] As shown in FIG. 1, Figure 1 The control method of the electronic expansion valve can include steps S110 to S140.

[0033] In step S110, the compressor operating frequency, the outer tube temperature, the high-pressure pressure, and the exhaust temperature in the air conditioner are detected. In step S120, whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met is determined according to the compressor operating frequency, the outer tube temperature, the high-pressure pressure, and the exhaust temperature. In step S130, if the predetermined adjustment condition is met, the updated expansion valve opening degree is calculated according to the actual expansion valve opening degree of the electronic expansion valve. In step S140, the electronic expansion valve is controlled to operate according to the updated expansion valve opening degree, and the actual operating frequency of the compressor in the air conditioner is increased.

[0034] The compressor operating frequency is the actual operating frequency of the compressor in the air conditioner that is detected. The outer tube temperature is the actual temperature of the condenser coil in the air conditioner that is detected. Specifically, an outer tube temperature sensor can be installed on the outer wall of the condenser of the air conditioner, so that the outer tube temperature can be detected in real time by the outer tube temperature sensor. The high-pressure pressure is the actual pressure at the outlet of the compressor that is detected. The high-pressure pressure can also be referred to as the exhaust pressure. The exhaust temperature is the actual temperature at the outlet of the compressor that is detected.

[0035] The comprehensive determination according to the correlation of the compressor operating frequency, the outer tube temperature, the high-pressure pressure, and the exhaust temperature is used to determine whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met. If the predetermined adjustment condition is met, the updated expansion valve opening degree is calculated according to the actual expansion valve opening degree of the electronic expansion valve at the current time.

[0036] After the electronic expansion valve is controlled to operate according to the updated expansion valve opening degree, the actual operating frequency of the compressor can be reliably increased. Increasing the actual operating frequency of the compressor in the air conditioner can reliably increase the operating frequency, improve the refrigerating capacity, and reliably improve the refrigerating effect of the air conditioner.

[0037] In this way, based on steps S110 to S140, by optimizing the opening degree control of the electronic expansion valve in the air conditioner, the opening degree control of the electronic expansion valve is associated with the outer pipe temperature, the high pressure, and the exhaust temperature to comprehensively consider the control of the electronic expansion valve and the compressor, so that the compressor in the air conditioner improves the operating frequency, improves the refrigerating capacity, reliably improves the refrigerating effect of the air conditioner, and improves the user experience under the premise of meeting the reliability.

[0038] The following describes Figure 1 When the control of the electronic expansion valve is performed in the embodiment, further optional specific embodiments of each step are performed.

[0039] In an embodiment, referring to Figure 2 Step S120, the predetermined adjustment condition of the electronic expansion valve in the air conditioner is determined according to the compressor operating frequency, the outer pipe temperature, the high pressure, and the exhaust temperature, which can specifically include:

[0040] Step S210, whether the compressor operating frequency is less than a predetermined upper limit frequency, whether the outer pipe temperature is greater than or equal to an outer pipe limit frequency temperature, whether the exhaust temperature is less than an exhaust limit frequency temperature, and whether the high pressure is less than a limit pressure are determined. Step S220, if all are, the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met.

[0041] The predetermined upper limit frequency, the outer pipe limit frequency temperature, the exhaust limit frequency temperature, and the limit pressure can be predetermined and set according to actual conditions.

[0042] If the compressor operating frequency is less than the predetermined upper limit frequency, the operating frequency of the compressor can be further improved. If the outer pipe temperature is greater than or equal to the outer pipe limit frequency temperature, the outer pipe temperature protection limit frequency appears in the air conditioner. If the exhaust temperature is less than the exhaust limit frequency temperature, the exhaust temperature protection limit frequency does not appear in the air conditioner. If the high pressure is less than the limit pressure, the high pressure does not exceed the limit in the air conditioner.

[0043] Further, if it is determined that the compressor operating frequency is less than the predetermined upper limit frequency, the outer pipe temperature is greater than or equal to the outer pipe limit frequency temperature, the exhaust temperature is less than the exhaust limit frequency temperature, and the high pressure is less than the limit pressure, it can be determined that the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met.

[0044] In this way, the compressor operating frequency, the outer pipe temperature, the high pressure, and the exhaust temperature are combined to determine that the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met, and the opening degree of the electronic expansion valve can be reliably adjusted and controlled according to the outer pipe temperature.

[0045] Further, in an embodiment, the step S130 of calculating the updated expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve can include: calculating a first opening degree calculation result according to the actual expansion valve opening degree, the outdoor tube temperature and the outdoor tube frequency limiting temperature; and obtaining the updated expansion valve opening degree according to the first opening degree calculation result.

[0046] The first opening degree calculation result is calculated according to the actual expansion valve opening degree, the outdoor tube temperature and the outdoor tube frequency limiting temperature, and the outdoor tube temperature and the outdoor tube frequency limiting temperature are considered. The updated expansion valve opening degree obtained according to the first opening degree calculation result can consider the outdoor tube temperature in the air conditioner for the control of the electronic expansion valve, and the opening degree control reliability of the electronic expansion valve can be effectively ensured.

[0047] In some ways, the first opening degree calculation result is directly used as the updated expansion valve opening degree, or the first opening degree calculation result is modified according to the high-pressure pressure and the exhaust temperature and then used as the updated expansion valve opening degree.

[0048] In some ways, the first opening degree calculation result is directly used as the updated expansion valve opening degree, or the first opening degree calculation result is modified according to the high-pressure pressure and the exhaust temperature and then used as the updated expansion valve opening degree.

[0049] The first opening degree calculation result B1 is calculated according to the formula B1=B-(Tw-Tx), and the first opening degree calculation result B1 is directly used as the updated expansion valve opening degree, which can reliably control the opening degree of the electronic expansion valve.

[0050] Further, in an embodiment, the step S140 of calculating the updated expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve can include: calculating a second opening degree calculation result according to the actual expansion valve opening degree, the outdoor tube temperature, the high-pressure pressure and the exhaust temperature; and obtaining the updated expansion valve opening degree according to the second opening degree calculation result.

[0051] In this embodiment, the actual expansion valve opening degree, the outdoor tube temperature, the high-pressure pressure and the exhaust temperature are comprehensively considered to calculate the second opening degree calculation result. According to the second opening degree calculation result, the updated expansion valve opening degree is obtained for the control of the electronic expansion valve, which can consider the outdoor tube temperature, the high-pressure pressure and the exhaust temperature in the air conditioner for the control of the electronic expansion valve, and the opening degree control reliability of the electronic expansion valve can be further ensured.

[0052] The preset fitting formula can be obtained by fitting actual operation parameters (including the actual expansion valve opening degree, the outer pipe temperature, the high-pressure pressure, the exhaust temperature, and the suitable second opening degree calculation result) in the air conditioner in advance. According to the second opening degree calculation result, the updated expansion valve opening degree can be obtained by directly taking the second opening degree calculation result as the updated expansion valve opening degree.

[0053] In one embodiment, referring to Figure 3 In step S140, the actual operation frequency of the compressor in the air conditioner is increased, which can specifically include the following steps:

[0054] In step S310, after the electronic expansion valve operates at the updated expansion valve opening degree for a predetermined time length, the actual operation frequency of the compressor in the air conditioner is increased to obtain an increased operation frequency. In step S320, the compressor in the air conditioner is controlled to operate at the increased operation frequency.

[0055] After the electronic expansion valve operates at the updated expansion valve opening degree for a predetermined time length, the actual operation frequency of the compressor in the air conditioner is increased to obtain an increased operation frequency. The actual operation frequency of the compressor in the air conditioner can be the operation frequency of the compressor when the electronic expansion valve operates at the updated expansion valve opening degree for a first predetermined time length.

[0056] Then, the compressor in the air conditioner is controlled to operate at the increased operation frequency. Since the electronic expansion valve operates at the updated expansion valve opening degree for a predetermined time length, the actual operation frequency of the compressor can be stably increased, and the instruction effect of the air conditioner can be stably improved. The predetermined time length can be preset according to actual conditions.

[0057] Alternatively, in other embodiments, in step S140, the actual operation frequency of the compressor in the air conditioner is increased, which can specifically include the following steps: after the electronic expansion valve operates at the updated expansion valve opening degree, the actual operation frequency of the compressor in the air conditioner is immediately increased to obtain an increased operation frequency; and the compressor in the air conditioner is immediately controlled to operate at the increased operation frequency.

[0058] Further, the actual operation frequency of the compressor in the air conditioner is increased to obtain an increased operation frequency, which can include one of the following methods:

[0059] Firstly, the actual operation frequency of the compressor in the air conditioner is added by a predetermined increase value to obtain the increased operation frequency.

[0060] The second way is to determine a dynamic increase value according to the difference between the updated expansion valve opening degree and the actual expansion valve opening degree, and add the actual running frequency of the compressor in the air conditioner and the dynamic increase value to obtain the increased running frequency.

[0061] In the first way, the actual running frequency of the compressor in the air conditioner is added with a predetermined increase value to obtain the increased running frequency, and the predetermined increase value is a fixed value set in advance. For example, the predetermined increase value can be 2.

[0062] In the second way, a dynamic increase value is determined according to the difference between the updated expansion valve opening degree and the actual expansion valve opening degree, and the actual running frequency of the compressor in the air conditioner is added with the dynamic increase value to obtain the increased running frequency. The dynamic increase value is dynamically determined according to the difference between the updated expansion valve opening degree and the actual expansion valve opening degree. Based on the increased running frequency, the compressor is controlled to further increase the frequency to improve the reliability of the air conditioner refrigeration. The dynamic increase value query table can be set in advance. According to the range in which the difference between the updated expansion valve opening degree and the actual expansion valve opening degree is located, the preset dynamic increase value corresponding to the range is queried from the dynamic increase value query table.

[0063] To better implement the electronic expansion valve control method provided by the embodiments of the present application, the foregoing embodiments are further described below in combination with an electronic expansion valve control flow in a scenario. The meanings of the terms are the same as in the foregoing embodiments, and the specific implementation details can be referred to the descriptions in the foregoing embodiments.

[0064] Figure 4 A control flow chart of an electronic expansion valve in a scenario applying the embodiments of the present application is shown. As shown in FIG. 4, the control flow of the electronic expansion valve in the scenario can include steps S410 to S480. Figure 4

[0065] In the scenario, steps S410 to S450, the running frequency of the compressor in the air conditioner, the outer pipe temperature, the high pressure and the exhaust temperature are detected; and whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met is judged according to the running frequency of the compressor, the outer pipe temperature, the high pressure and the exhaust temperature. Specifically, whether the running frequency of the compressor is less than a predetermined upper limit frequency, the outer pipe temperature is greater than or equal to an outer pipe limit frequency temperature, the exhaust temperature is less than an exhaust limit frequency temperature, and the high pressure is less than a limit pressure is judged. If all are yes, the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met.

[0066] In step S410, after running for a certain time, F​当前运行频率。

[0067] Specifically, after the air conditioner is started, the operating frequency of the compressor and the opening degree of the expansion valve are controlled normally according to the original program logic, and after a certain time (which can be set according to actual conditions), F 当前运行频率 , F 当前运行频率 , i.e., the detected operating frequency of the compressor, is detected.

[0068] In step S420, it is determined whether F 当前运行频率 =F 上限频率 . If yes, step S480 is executed; if no, step S430 is entered.

[0069] F 上限频率 , i.e., the predetermined upper limit frequency. If F 当前运行频率 is not equal to F 上限频率 , it indicates that F 当前运行频率 <F 上限频率 .

[0070] In step S430, it is determined whether T 当前外管温度 ≥T 外管限频温度 . If yes, step S440 is entered; if no, step S480 is executed.

[0071] Specifically, if F 当前运行频率 <F 上限频率 , T 当前外管温度 is further detected, and T 当前外管温度 is compared with T 外管限频温度 . T 当前外管温度 is the detected outer tube temperature, and T 外管限频温度 is the outer tube limit frequency temperature. If T 当前外管温度 ≥T 外管限频温度 , step S440 is entered; if T 当前外管温度 <T 外管限频温度 , step S480 is executed.

[0072] In step S440, it is determined whether T 当前排气温度 ≥T 排气限频温度 . If yes, step S480 is executed; if no, step S450 is entered.

[0073] Specifically, if T 当前外管温度 ≥T 外管限频温度 , it indicates that the outer tube temperature protection limit frequency occurs, and T 当前排气温度 is further detected and compared with T 排气限频温度 . T 当前排气温度 is the detected exhaust temperature, and T 排气限频温度 is the exhaust limit frequency temperature. If T 当前排气温度 ≥T 排气限频温度then step S480 is entered. In contrast, if "T 当前排气温度 <T 排气限频温度 then step S450 is entered.

[0074] In step S450, it is determined whether "M 当前高压压力 ≥ M 限制压力 ". If yes, step S480 is executed; if no, step S450 is executed.

[0075] Specifically, if "T 当前排气温度 <T 排气限频温度 ", M 当前高压压力 is further detected and compared with M 限制压力 . Here, M 当前高压压力 is the detected high-pressure pressure, and M 限制压力 is the limit pressure. If "M 当前高压压力 ≥ M 限制压力 ", step S480 is executed. In contrast, if "M 当前高压压力 <M 限制压力 ", step S460 is entered.

[0076] In this scenario, in step S460, B 更新后开度 =B 当前开度 -(T 当前外管温度 -T 外管限频温度 ). That is, if "M 当前高压压力 <M 限制压力 ", the opening of the electronic expansion valve is updated.

[0077] Specifically, in this scenario, if the predetermined adjustment condition is met, the updated expansion valve opening is calculated according to the actual expansion valve opening of the electronic expansion valve.

[0078] Here, the calculation of the updated expansion valve opening according to the actual expansion valve opening of the electronic expansion valve specifically includes: calculation according to the actual expansion valve opening, the outer pipe temperature, and the outer pipe limit frequency temperature to obtain a first opening calculation result; and obtaining the updated expansion valve opening according to the first opening calculation result.

[0079] Here, the calculation according to the actual expansion valve opening, the outer pipe temperature, and the outer pipe limit frequency temperature to obtain the first opening calculation result specifically includes: calculation according to the formula B1=B-(Tw-Tx) to obtain the first opening calculation result, where B1 refers to the opening calculation result (i.e., B 更新后开度 ), and B refers to the actual expansion valve opening (i.e., B 当前开度 ).

[0080] In this scenario, in step S470, F 更新后频率 =F 当前运行频率 +2.

[0081] Specifically, after the electronic expansion valve runs for a predetermined length of time at the updated expansion valve opening degree, the actual running frequency of the compressor in the air conditioner is increased to obtain an increased running frequency; the compressor in the air conditioner is controlled to run at the increased running frequency. The actual running frequency of the compressor in the air conditioner is increased to obtain the increased running frequency, specifically including: the actual running frequency of the compressor in the air conditioner is added by a predetermined increase value to obtain the increased running frequency. Wherein, F 更新后频率 that is, the increased running frequency, F 当前运行频率 that is, the actual running frequency, 2 that is, the predetermined increase value.

[0082] Further, after the compressor in the air conditioner is controlled to run at the increased running frequency for a specified length of time, it can return to step S410 to continue to start the loop execution.

[0083] In this scenario, step S480, according to the original program logic, that is, the air conditioner as a whole is normally controlled and runs according to the original program logic.

[0084] In this scenario, by applying the embodiments of the present application, by optimizing the opening degree control of the electronic expansion valve in the air conditioner, the opening degree control of the electronic expansion valve is associated with the outer pipe temperature, the high pressure and the exhaust temperature to be considered comprehensively, to control the electronic expansion valve and the compressor together, so that the compressor in the air conditioner improves the running frequency under the premise of meeting the reliability, improves the refrigerating capacity, reliably improves the refrigerating effect of the air conditioner, and improves the user experience.

[0085] In addition, as Figure 5 indicated, according to another embodiment of the present application, an electronic expansion valve control device 500 is provided, which can include: a memory 501 storing a computer program; a processor 502 reading the computer program stored in the memory 501 to execute the method described in any embodiment of the present application.

[0086] As can be executed: detecting the running frequency of the compressor in the air conditioner, the outer pipe temperature, the high pressure and the exhaust temperature; according to the compressor running frequency, the outer pipe temperature, the high pressure and the exhaust temperature, judging whether the predetermined adjustment condition of the electronic expansion valve in the air conditioner is met; if the predetermined adjustment condition is met, calculating the updated expansion valve opening degree according to the actual expansion valve opening degree of the electronic expansion valve; controlling the electronic expansion valve to run according to the updated expansion valve opening degree, and increasing the actual running frequency of the compressor in the air conditioner.

[0087] In addition, according to another embodiment of the present application, an air conditioner is also provided, which can include: an electronic expansion valve control device as described in the embodiments of the present application.

[0088] In particular, a computer program product or computer program includes computer instructions stored in a computer readable storage medium. The processor of the control device of the electronic expansion valve of the air conditioner can read the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the air conditioner executes the method provided in various optional implementations of the embodiments of the present application.

[0089] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a computer program, or by a computer program controlling related hardware, which can be stored in a computer readable storage medium and loaded and executed by a processor.

[0090] To this end, the embodiments of the present application further provide a storage medium having a computer program stored therein, which can be loaded by a processor to execute the steps in any of the methods provided by the embodiments of the present application.

[0091] The storage medium can be a computer readable storage medium, which can include a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0092] Since the computer program stored in the storage medium can execute the steps in any of the methods provided by the embodiments of the present application, the beneficial effects of the methods provided by the embodiments of the present application can be achieved, which are described in detail in the foregoing embodiments and will not be described here.

[0093] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of this application following, in general, the principles of the application and including such

[0094] It should be understood that the application is not limited to the embodiments already described and shown in the drawings, but that various modifications and changes can be made without departing from the scope thereof.

Claims

1. A control method for an electronic expansion valve, characterized in that, include: Detect the compressor operating frequency, external pipe temperature, high pressure and exhaust temperature in the air conditioner; Based on the compressor operating frequency, the external pipe temperature, the high pressure, and the exhaust temperature, determine whether the predetermined adjustment conditions of the electronic expansion valve in the air conditioner are met; If the predetermined adjustment conditions are met, the expansion valve opening is calculated and updated based on the actual expansion valve opening of the electronic expansion valve; The operation of the electronic expansion valve is controlled according to the updated expansion valve opening, and the actual operating frequency of the compressor in the air conditioner is increased; The step of calculating and updating the expansion valve opening based on the actual expansion valve opening of the electronic expansion valve includes: calculating based on the actual expansion valve opening, the outer tube temperature, and the outer tube frequency limiting temperature to obtain a first opening calculation result; and obtaining the updated expansion valve opening based on the first opening calculation result. The step of calculating the first opening result based on the actual expansion valve opening, the outer pipe temperature, and the outer pipe frequency limiting temperature includes: calculating the first opening result according to the formula B1=B-(Tw-Tx), where B1 refers to the first opening result, B refers to the actual expansion valve opening, Tw refers to the outer pipe temperature, and Tx refers to the outer pipe frequency limiting temperature.

2. The method according to claim 1, characterized in that, The step of determining whether the predetermined adjustment conditions of the electronic expansion valve in the air conditioner are met based on the compressor operating frequency, the external pipe temperature, the high pressure, and the exhaust temperature includes: Determine whether the compressor operating frequency is less than a predetermined upper limit frequency, whether the outer pipe temperature is greater than or equal to the outer pipe frequency limiting temperature, whether the exhaust temperature is less than the exhaust frequency limiting temperature, and whether the high pressure is less than the limiting pressure. If both are true, then the predetermined adjustment conditions of the electronic expansion valve in the air conditioner are met.

3. The method according to claim 1, characterized in that, Increasing the actual operating frequency of the compressor in the air conditioner includes: After the electronic expansion valve has been running at the updated expansion valve opening for a predetermined period of time, the actual operating frequency of the compressor in the air conditioner is increased to obtain the increased operating frequency. The compressor in the air conditioner is controlled to operate at the increased operating frequency.

4. The method according to claim 3, characterized in that, The process of increasing the actual operating frequency of the compressor in the air conditioner to obtain the increased operating frequency includes one of the following methods: The increased operating frequency is obtained by adding the actual operating frequency of the compressor in the air conditioner to the predetermined increase value. The dynamic increase value is determined based on the difference between the updated expansion valve opening and the actual expansion valve opening, and the actual operating frequency of the compressor in the air conditioner is added to the dynamic increase value to obtain the increased operating frequency.

5. A control device for an electronic expansion valve, characterized in that, include: Memory, which stores computer programs; A processor reads a computer program stored in memory to execute the method described in any one of claims 1 to 4.

6. A storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the method described in any one of claims 1 to 4.

7. An air conditioner, characterized in that, include: The control device for the electronic expansion valve as described in claim 5.

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