Method and device for controlling the opening degree of an expansion valve, air conditioner, and storage medium

Abstract

The present application relates to the technical field of intelligent household appliances, and discloses a method for controlling the opening degree of an expansion valve, including: obtaining the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; determining an alternative expansion valve opening degree according to the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; determining a first compensation value according to the compressor frequency; determining a second compensation value according to the indoor ambient temperature; determining an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening degree. In this way, by jointly determining the alternative expansion valve opening degree through the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency, the difference between the initial expansion valve opening degree and the optimal expansion valve opening degree can be reduced. The present application also discloses a device, an air conditioner, and a storage medium for controlling the opening degree of an expansion valve.

Description

Technical Field

[0001] This application relates to the technical field of smart home appliances, for example, to a method and device for controlling the opening degree of an expansion valve, an air conditioner, and a storage medium. Background Art

[0002] Generally, during the operation of an air conditioner, it is necessary to control an electronic expansion valve to adjust the cooling capacity of the air conditioner. During the process of gradually increasing the valve opening degree of the electronic expansion valve, the cooling capacity will show the characteristic of first increasing and then decreasing. The expansion valve opening degree when the cooling capacity reaches the peak is called the optimal expansion valve opening degree. Therefore, when the air conditioner starts to operate, the closer the initial expansion valve opening degree of the electronic expansion valve is adjusted to the optimal expansion valve opening degree, the better the cooling effect in the room. Due to the influence of various environmental factors, the optimal expansion valve opening degree is not a fixed value. In the related art, only the compressor frequency and the outdoor ambient temperature are used to determine the initial expansion valve opening degree, resulting in a large difference between the initial expansion valve opening degree and the optimal expansion valve opening degree, and thus poor cooling effect of the air conditioner. Summary of the Invention

[0003] To provide a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a comprehensive review, nor is it intended to identify key / important constituent elements or delineate the scope of protection of these embodiments. Instead, it serves as a prelude to the subsequent detailed description.

[0004] Embodiments of the present disclosure provide a method and device for controlling the opening degree of an expansion valve, an air conditioner, and a storage medium, so as to improve the cooling effect of the air conditioner.

[0005] In some embodiments, the method for controlling the opening degree of the expansion valve includes: obtaining the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; determining an alternative expansion valve opening degree according to the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; determining a first compensation value according to the compressor frequency; determining a second compensation value according to the indoor ambient temperature; determining an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening degree.

[0006] In some embodiments, the device for controlling the opening degree of the expansion valve includes: an acquisition module configured to acquire the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; an alternative expansion valve opening degree determination module configured to determine an alternative expansion valve opening degree according to the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; a first compensation value determination module configured to determine a first compensation value according to the compressor frequency; a second compensation value determination module configured to determine a second compensation value according to the indoor ambient temperature; an operation module configured to determine an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and trigger the expansion valve to operate according to the initial expansion valve opening degree.

[0007] In some embodiments, the air conditioner includes a processor and a memory storing program instructions, and the processor is configured to execute the above method for controlling the opening degree of the expansion valve when running the program instructions.

[0008] In some embodiments, the storage medium stores program instructions, and the program instructions execute the above method for controlling the opening degree of the expansion valve when running.

[0009] The method and device for controlling the opening degree of the expansion valve, the air conditioner, and the storage medium provided by the embodiments of the present disclosure can achieve the following technical effects: by acquiring the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; determining an alternative expansion valve opening degree according to the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; determining a first compensation value according to the compressor frequency; determining a second compensation value according to the indoor ambient temperature; determining an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening degree. In this way, since the value of the optimal expansion valve opening degree is jointly affected by several factors such as the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency. Therefore, when determining the initial expansion valve opening degree, the combined influence of the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency is considered, so that the obtained initial expansion valve opening degree is closer to the optimal expansion valve opening degree, reducing the difference between the initial expansion valve opening degree and the optimal expansion valve opening degree, and improving the refrigeration effect of the air conditioner.

[0010] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. Description of the Drawings

[0011] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0012] Figure 1 It is a schematic diagram of the first method for controlling the opening degree of an expansion valve provided by an embodiment of the present disclosure;

[0013] Figure 2 It is a schematic diagram of the second method for controlling the opening degree of an expansion valve provided by an embodiment of the present disclosure;

[0014] Figure 3 It is a schematic diagram of the third method for controlling the opening degree of an expansion valve provided by an embodiment of the present disclosure;

[0015] Figure 4 It is a schematic diagram of the fourth method for controlling the opening degree of an expansion valve provided by an embodiment of the present disclosure;

[0016] Figure 5 It is a schematic diagram of a device for controlling the opening degree of an expansion valve provided by an embodiment of the present disclosure;

[0017] Figure 6 It is a schematic diagram of an air conditioner provided by an embodiment of the present disclosure. Detailed implementation manners

[0018] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0019] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0020] Unless otherwise specified, the term "plurality" means two or more.

[0021] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0022] The term "and / or" is an associative relationship describing an object and indicates that three relationships can exist. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0023] This application is applied to an air conditioner and is used to reduce the difference between the initial expansion valve opening and the optimal expansion valve opening of the air conditioner. By obtaining the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; determining an alternative expansion valve opening based on the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; determining a first compensation value based on the compressor frequency; determining a second compensation value based on the indoor ambient temperature; determining the initial expansion valve opening based on the alternative expansion valve opening, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening. In this way, since the opening value of the optimal expansion valve opening is jointly affected by several factors such as the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency. Therefore, when determining the initial expansion valve opening, the joint influence of the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency is considered, making the obtained initial expansion valve opening closer to the optimal expansion valve opening, reducing the difference between the initial expansion valve opening and the optimal expansion valve opening, and improving the refrigeration effect of the air conditioner.

[0024] Combined with Figure 1 As shown, the embodiments of the present disclosure provide a first method for controlling the expansion valve opening, including:

[0025] Step S101, the air conditioner obtains the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency.

[0026] Step S102, the air conditioner determines an alternative expansion valve opening based on the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency.

[0027] Step S103, the air conditioner determines a first compensation value based on the compressor frequency.

[0028] Step S104, the air conditioner determines a second compensation value based on the indoor ambient temperature.

[0029] Step S105, the air conditioner determines the initial expansion valve opening based on the alternative expansion valve opening, the first compensation value, and the second compensation value; and triggers the expansion valve to operate according to the initial expansion valve opening.

[0030] Adopt the method for controlling the opening degree of the expansion valve provided by the embodiments of the present disclosure, by obtaining the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency; determining an alternative expansion valve opening degree according to the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency; determining a first compensation value according to the compressor frequency; determining a second compensation value according to the indoor ambient temperature; determining an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening degree. In this way, since the opening degree value of the optimal expansion valve opening degree is jointly affected by several factors such as the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency. Therefore, when determining the initial expansion valve opening degree, the combined influence of the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency is considered, so that the obtained initial expansion valve opening degree is closer to the optimal expansion valve opening degree, reducing the difference between the initial expansion valve opening degree and the optimal expansion valve opening degree, and improving the refrigeration effect of the air conditioner.

[0031] In some embodiments, the air conditioner is provided with a temperature sensor, and the indoor ambient temperature is obtained through the temperature sensor. Or, a temperature sensor is provided indoors, and the temperature sensor transmits the indoor ambient temperature to the air conditioner through a wireless transmission method. Or, a temperature sensor is provided indoors, and the temperature sensor transmits the indoor ambient temperature to the server through a wireless transmission method, and the air conditioner receives the indoor ambient temperature sent by the server. Among them, the wireless transmission method includes Bluetooth, wifi, etc.

[0032] In some embodiments, the air conditioner is provided with a temperature sensor, and the outdoor ambient temperature is obtained through the temperature sensor. Or, a temperature sensor is provided outdoors, and the temperature sensor transmits the outdoor ambient temperature to the air conditioner through a wireless transmission method. Or, a temperature sensor is provided outdoors, and the temperature sensor transmits the outdoor ambient temperature to the server through a wireless transmission method, and the air conditioner receives the outdoor ambient temperature sent by the server. Among them, the wireless transmission method includes Bluetooth, wifi, etc.

[0033] Optionally, determining an alternative expansion valve opening degree according to the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency includes: determining a temperature difference coefficient according to the temperature difference between the indoor ambient temperature and the outdoor ambient temperature; determining an alternative expansion valve opening degree according to the temperature difference coefficient, the internal coil temperature, and the compressor frequency. In this way, since the value of the optimal expansion valve opening degree is jointly affected by several factors such as the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency. Determining an alternative expansion valve opening degree according to the indoor ambient temperature, outdoor ambient temperature, internal coil temperature, and compressor frequency can determine a suitable alternative expansion valve opening degree.

[0034] Further, determining a temperature difference coefficient based on the temperature difference between the indoor environmental temperature and the outdoor environmental temperature includes: when the temperature difference is less than a preset value, determining the preset coefficient as the temperature difference coefficient; and / or when the temperature difference is greater than or equal to the preset value, determining the temperature difference as the temperature difference coefficient. Wherein, the preset value is 5 and the preset coefficient is 8.

[0035] Combined with Figure 2 As shown, the embodiments of the present disclosure provide a second method for controlling the opening degree of an expansion valve, including:

[0036] Step S201, the air conditioner obtains the indoor environmental temperature, the outdoor environmental temperature, the inner coil temperature, and the compressor frequency.

[0037] Step S202, the air conditioner determines whether the temperature difference between the indoor environmental temperature and the outdoor environmental temperature is less than a preset value; when the temperature difference is less than the preset value, step S203 is executed; when the temperature difference is greater than or equal to the preset value, step S204 is executed.

[0038] Step S203, the air conditioner determines the preset coefficient as the temperature difference coefficient; then step S205 is executed.

[0039] Step S204, the air conditioner determines the temperature difference as the temperature difference coefficient; then step S205 is executed.

[0040] Step S205, the air conditioner determines an alternative expansion valve opening degree according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency; then step S206 is executed.

[0041] Step S206, the air conditioner determines a first compensation value according to the compressor frequency; then step S207 is executed.

[0042] Step S207, the air conditioner determines a second compensation value according to the indoor environmental temperature; then step S208 is executed.

[0043] Step S208, the air conditioner determines an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggers the expansion valve to operate according to the initial expansion valve opening degree.

[0044] By using the method for controlling the opening degree of an expansion valve provided in the embodiments of the present disclosure, the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency are obtained; the air conditioner determines whether the temperature difference between the indoor ambient temperature and the outdoor ambient temperature is less than a preset value; in the case where the temperature difference is less than the preset value, the air conditioner determines the preset coefficient as the temperature difference coefficient; in the case where the temperature difference is greater than or equal to the preset value, the temperature difference is determined as the temperature difference coefficient; an alternative expansion valve opening degree is determined according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency; a first compensation value is determined according to the compressor frequency; a second compensation value is determined according to the indoor ambient temperature; an initial expansion valve opening degree is determined according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and the expansion valve is triggered to operate according to the initial expansion valve opening degree. In this way, since the opening degree value of the optimal expansion valve opening degree is jointly affected by several factors such as the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency. Therefore, when determining the initial expansion valve opening degree, the combined influence of the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency is considered, so that the obtained initial expansion valve opening degree is closer to the optimal expansion valve opening degree, reducing the difference between the initial expansion valve opening degree and the optimal expansion valve opening degree, and improving the refrigeration effect of the air conditioner.

[0045] Further, determining an alternative expansion valve opening degree according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency includes: calculating H1 = K1 * Hz / (W * (Tai - Teva)) to obtain the alternative expansion valve opening degree; where H1 is the alternative expansion valve opening degree; K1 is a first preset parameter; Hz is the compressor frequency; W is the temperature difference coefficient; Teva is the inner coil temperature; Tai is the indoor ambient temperature; "*" is multiplication; " / " is division. Among them, the first preset parameter is 100. In this way, the indoor humidity can be fitted through 1 / (Tai - Teva), and a reasonable alternative expansion valve opening degree under different indoor ambient temperatures, outdoor ambient temperatures, and indoor humidities can be obtained through K1 * Hz / (W * (Tai - Teva)).

[0046] Optionally, determining a first compensation value according to the compressor frequency includes: calculating H2 = K2 * Hz to obtain the first compensation value; where H2 is the first compensation value; K2 is a second preset parameter; Hz is the compressor frequency. Among them, the second preset parameter is 4. In this way, according to the influence of the compressor frequency on the optimal expansion valve opening degree value, targeted compensation is performed, which can make the initial expansion valve opening degree closer to the optimal expansion valve opening degree.

[0047] Optionally, determining the second compensation value according to the indoor ambient temperature includes: calculating H3 = K3 * Tai to obtain the second compensation value; where H3 is the second compensation value; K3 is the third preset parameter; Tai is the indoor ambient temperature. Among them, the third preset parameter is 3. In this way, according to the influence of the indoor ambient temperature on the optimal expansion valve opening value, targeted compensation is carried out, which can make the initial expansion valve opening closer to the optimal expansion valve opening.

[0048] Optionally, determining the initial expansion valve opening according to the alternative expansion valve opening, the first compensation value and the second compensation value includes: calculating Y = H1 + H2 + H3 + c to obtain the initial expansion valve opening; where H1 is the alternative expansion valve opening; H2 is the first compensation value; H3 is the second compensation value; c is the fourth preset parameter. Among them, the fourth preset parameter is -30 or -25. In this way, compensating the alternative expansion valve opening according to the compressor frequency and the indoor ambient temperature can better fit the influence of the compressor frequency and the indoor ambient temperature on the optimal expansion valve opening in each environment, reduce the difference between the initial expansion valve opening and the optimal expansion valve opening, and improve the refrigeration effect of the air conditioner.

[0049] In some embodiments, the first preset parameter is 100, the second preset parameter is 4, the third preset parameter is 3, and the fourth preset parameter is -30. The formula for calculating the initial expansion valve opening provided by the embodiments of the present disclosure is Y = 100 * Hz / (W * (Tai - Teva)) + 4 * Hz + 3 * Tai - 30. The existing formula for calculating the initial expansion valve opening is Q = 1.2 * Hz + 300 + 2 * (B - 35). Where Q is the initial expansion valve opening, Hz is the frequency, and B is the outdoor ambient temperature. The initial expansion valve opening calculated by the existing technology is used as the original expansion valve opening. The initial expansion valve opening calculated by the embodiments of the present disclosure is used as the new expansion valve opening. Table 1 is a comparison table of the new expansion valve opening and the original expansion valve opening. As shown in Table 1, when the indoor ambient temperature is 21 degrees, the outdoor ambient temperature is 35 degrees, the compressor frequency is 40 hz, and the inner coil temperature is 10, the optimal expansion valve opening is 220, the new expansion valve opening is 219, and the original expansion valve opening is 348. It can be seen from Table 1 that the difference between the new expansion valve opening calculated by the embodiments of the present disclosure and the optimal expansion valve opening is 1, while the difference between the original expansion valve opening calculated by the existing technology and the optimal expansion valve opening is 128. Using the method provided by the embodiments of the present disclosure can reduce the difference between the initial expansion valve opening and the optimal expansion valve opening.

[0050]

[0051]

[0052] Table 1

[0053] In some embodiments, the first preset parameter is 100, the second preset parameter is 4, the third preset parameter is 3, and the fourth preset parameter is -25. The formula for calculating the initial expansion valve opening provided by the embodiments of the present disclosure is Y = 100*Hz / (W*(Tai - Teva)) + 4*Hz + 3*Tai - 25. The existing formula for calculating the initial expansion valve opening is Q = 1.2*Hz + 300 + 2*(B - 35). Wherein, Q is the initial expansion valve opening; Hz is the frequency; B is the outdoor ambient temperature. The initial expansion valve opening calculated by the prior art is used as the original expansion valve opening. The initial expansion valve opening calculated by the embodiments of the present disclosure is used as the new expansion valve opening. Table 2 is a comparison table of the new expansion valve opening and the original expansion valve opening. As shown in Table 1, when the indoor ambient temperature is 27 degrees, the outdoor ambient temperature is 35 degrees, the compressor frequency is 40 hz, and the inner coil temperature is 13, the optimal expansion valve opening is 270, the new expansion valve opening is 252, and the original expansion valve opening is 348. It can be seen from Table 2 that the difference between the new expansion valve opening calculated by the embodiments of the present disclosure and the optimal expansion valve opening is 18, while the difference between the original expansion valve opening calculated by the prior art and the optimal expansion valve opening is 78. By using the method provided by the embodiments of the present disclosure, the difference between the initial expansion valve opening and the optimal expansion valve opening can be reduced.

[0054]

[0055]

[0056] Table 2

[0057] Optionally, after triggering the expansion valve to operate according to the initial expansion valve opening, it further includes: displaying the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, compressor frequency, and initial expansion valve opening to the user.

[0058] Further, displaying the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, compressor frequency, and initial expansion valve opening to the user includes: sending the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, compressor frequency, and initial expansion valve opening to a preset display screen, and triggering the display screen to display the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, compressor frequency, and initial expansion valve opening.

[0059] Combined with Figure 3 As shown, the embodiments of the present disclosure provide a third method for controlling the expansion valve opening, including:

[0060] Step S301, the air conditioner obtains the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency.

[0061] Step S302: The air conditioner determines the alternative expansion valve opening degree according to the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, and compressor frequency.

[0062] Step S303: The air conditioner determines the first compensation value according to the compressor frequency.

[0063] Step S304: The air conditioner determines the second compensation value according to the indoor environmental temperature.

[0064] Step S305: The air conditioner determines the initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggers the expansion valve to operate according to the initial expansion valve opening degree.

[0065] Step S306: The air conditioner displays the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, compressor frequency, and initial expansion valve opening degree to the user.

[0066] By using the method for controlling the expansion valve opening degree provided in the embodiment of the present disclosure, by obtaining the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, and compressor frequency; determining the alternative expansion valve opening degree according to the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, and compressor frequency; determining the first compensation value according to the compressor frequency; determining the second compensation value according to the indoor environmental temperature; determining the initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening degree. In this way, since the opening degree value of the optimal expansion valve is jointly affected by several factors such as the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, and compressor frequency. Therefore, when determining the initial expansion valve opening degree, the combined influence of the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, and compressor frequency is considered, making the obtained initial expansion valve opening degree closer to the optimal expansion valve opening degree, reducing the difference between the initial expansion valve opening degree and the optimal expansion valve opening degree, and improving the refrigeration effect of the air conditioner. By displaying the indoor environmental temperature, outdoor environmental temperature, inner coil temperature, compressor frequency, and initial expansion valve opening degree to the user, it is convenient for R & D personnel to observe the change of the initial expansion valve opening degree, so as to better determine the initial expansion valve opening degree.

[0067] Combined with Figure 4 As shown in

[0068] Step S401: The server obtains the indoor environmental temperature and the outdoor environmental temperature.

[0069] Step S402: The server sends the indoor environmental temperature and the outdoor environmental temperature to the air conditioner.

[0070] Step S403: The air conditioner obtains the inner coil temperature and the compressor frequency, and receives the indoor environmental temperature and the outdoor environmental temperature sent by the server.

[0071] Step S404: The air conditioner determines the alternative expansion valve opening based on the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency.

[0072] Step S405: The air conditioner determines the first compensation value based on the compressor frequency.

[0073] Step S406: The air conditioner determines the second compensation value based on the indoor ambient temperature.

[0074] Step S407: The air conditioner determines the initial expansion valve opening based on the alternative expansion valve opening, the first compensation value, and the second compensation value; and triggers the expansion valve to operate according to the initial expansion valve opening.

[0075] By using the method for controlling the expansion valve opening provided in the embodiments of the present disclosure, the server sends the indoor ambient temperature and the outdoor ambient temperature to the air conditioner. The air conditioner obtains the inner coil temperature and the compressor frequency, and receives the indoor ambient temperature and the outdoor ambient temperature sent by the server. The air conditioner determines the alternative expansion valve opening based on the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; determines the first compensation value based on the compressor frequency; determines the second compensation value based on the indoor ambient temperature; determines the initial expansion valve opening based on the alternative expansion valve opening, the first compensation value, and the second compensation value; and triggers the expansion valve to operate according to the initial expansion valve opening. In this way, since the opening value of the optimal expansion valve is jointly affected by several factors such as the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency. Therefore, when determining the initial expansion valve opening, the joint influence of the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency is considered, making the obtained initial expansion valve opening closer to the optimal expansion valve opening, reducing the difference between the initial expansion valve opening and the optimal expansion valve opening, and improving the refrigeration effect of the air conditioner.

[0076] Combined with Figure 5 As shown in the figure, the embodiments of the present disclosure disclose a device for controlling the expansion valve opening, including: an acquisition module 501, an alternative expansion valve opening determination module 502, a first compensation value determination module 503, a second compensation value determination module 504, and an operation module 505. The acquisition module 501 is configured to acquire the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; the alternative expansion valve opening determination module 502 is configured to determine the alternative expansion valve opening based on the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; the first compensation value determination module 503 is configured to determine the first compensation value based on the compressor frequency; the second compensation value determination module 504 is configured to determine the second compensation value based on the indoor ambient temperature; the operation module 505 is configured to determine the initial expansion valve opening based on the alternative expansion valve opening, the first compensation value, and the second compensation value; and trigger the expansion valve to operate according to the initial expansion valve opening.

[0077] Using the device for controlling the opening degree of an expansion valve provided by the embodiments of the present disclosure, the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency are obtained through an acquisition module; an alternative expansion valve opening degree determination module determines an alternative expansion valve opening degree according to the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency; a first compensation value determination module determines a first compensation value according to the compressor frequency; a second compensation value determination module determines a second compensation value according to the indoor ambient temperature; an operation module determines an initial expansion valve opening degree according to the alternative expansion valve opening degree, the first compensation value, and the second compensation value; and triggers the expansion valve to operate according to the initial expansion valve opening degree. In this way, since the opening degree value of the optimal expansion valve opening degree is jointly affected by several factors such as the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency. Therefore, when determining the initial expansion valve opening degree, the joint influence of the indoor ambient temperature, the outdoor ambient temperature, the inner coil temperature, and the compressor frequency is considered, so that the obtained initial expansion valve opening degree is closer to the optimal expansion valve opening degree, reducing the difference between the initial expansion valve opening degree and the optimal expansion valve opening degree, and improving the refrigeration effect of the air conditioner.

[0078] Combined with Figure 6 As shown, the embodiments of the present disclosure provide an air conditioner, including a processor 600 and a memory 601. Optionally, the device may further include a communication interface 602 and a bus 603. Among them, the processor 600, the communication interface 602, and the memory 601 can communicate with each other through the bus 603. The communication interface 602 can be used for information transmission. The processor 600 can call the logical instructions in the memory 601 to execute the method for controlling the opening degree of the expansion valve in the above embodiments.

[0079] In addition, when the logical instructions in the above-mentioned memory 601 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0080] The memory 601, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor 600 executes functional applications and data processing by running the program instructions / modules stored in the memory 601, that is, implements the method for controlling the opening degree of the expansion valve in the above embodiments.

[0081] The memory 601 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function. The data storage area may store data created according to the use of the air conditioner and the like. In addition, the memory 601 may include a high-speed random access memory and may also include a non-volatile memory.

[0082] For the air conditioner adopting the embodiment of the present disclosure, by obtaining the indoor environmental temperature, the outdoor environmental temperature, the inner coil temperature, and the compressor frequency; determining an alternative expansion valve opening according to the indoor environmental temperature, the outdoor environmental temperature, the inner coil temperature, and the compressor frequency; determining a first compensation value according to the compressor frequency; determining a second compensation value according to the indoor environmental temperature; determining an initial expansion valve opening according to the alternative expansion valve opening, the first compensation value, and the second compensation value; and triggering the expansion valve to operate according to the initial expansion valve opening. In this way, since the opening value of the optimal expansion valve opening is jointly affected by several factors such as the indoor environmental temperature, the outdoor environmental temperature, the inner coil temperature, and the compressor frequency. Therefore, when determining the initial expansion valve opening, the joint influence of the indoor environmental temperature, the outdoor environmental temperature, the inner coil temperature, and the compressor frequency is considered, so that the obtained initial expansion valve opening is closer to the optimal expansion valve opening, reducing the difference between the initial expansion valve opening and the optimal expansion valve opening and improving the refrigeration effect of the air conditioner.

[0083] The embodiment of the present disclosure provides a storage medium storing program instructions, and when the program instructions are running, they execute the above method for controlling the expansion valve opening.

[0084] The embodiment of the present disclosure provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is made to execute the above method for controlling the expansion valve opening.

[0085] The above computer-readable storage medium may be a transient computer-readable storage medium or a non-transient computer-readable storage medium.

[0086] The technical solution of the embodiment of the present disclosure may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions for causing a computer air conditioner (which may be a personal computer, an air conditioner, or a network air conditioner, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The foregoing storage medium may be a non-transient storage medium, including: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc that can store program codes, or may also be a transient storage medium.

[0087] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The embodiments merely represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terms used in this application are only for describing the embodiments and do not limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to also include the plural forms. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations including one or more of the associated listed items. Additionally, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" etc. mean the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups of these. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, or air conditioner including the element. Herein, each embodiment may focus on the differences from other embodiments, and the same or similar parts among the embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method parts disclosed in the embodiments, the relevant parts may refer to the description of the method parts.

[0088] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner may depend on the specific application and design constraints of the technical solution. The skilled person may use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure. The skilled person can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0089] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, air conditioners, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical, or other forms. The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. Additionally, in the embodiments of the present disclosure, the various functional units can be integrated in one processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit.

[0090] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions marked in the block can occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks can also occur in a different order than that disclosed in the description. Sometimes, there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, which can depend on the functions involved. Each block in the block diagram and / or flowchart, as well as combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling the opening degree of an expansion valve, characterized in that, Including: Obtain the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; Determine the temperature difference coefficient according to the temperature difference between the indoor ambient temperature and the outdoor ambient temperature; Determine the alternative expansion valve opening according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency; Determine the first compensation value according to the compressor frequency; Determine the second compensation value according to the indoor ambient temperature; Determine the initial expansion valve opening according to the alternative expansion valve opening, the first compensation value, and the second compensation value; And trigger the expansion valve to operate according to the initial expansion valve opening; Determining the alternative expansion valve opening according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency includes: calculating H1 = K1 * Hz / (W * (Tai - Teva)) to obtain the alternative expansion valve opening; where H1 is the alternative expansion valve opening; K1 is the first preset parameter; Hz is the compressor frequency; W is the temperature difference coefficient; Teva is the inner coil temperature; Tai is the indoor ambient temperature.

2. The method according to claim 1, wherein Determining the temperature difference coefficient according to the temperature difference between the indoor ambient temperature and the outdoor ambient temperature includes: In the case where the temperature difference is less than the preset value, determine the preset coefficient as the temperature difference coefficient; and / or, In the case where the temperature difference is greater than or equal to the preset value, determine the temperature difference as the temperature difference coefficient.

3. The method according to claim 1, wherein Determining the first compensation value according to the compressor frequency includes: Calculating H2 = K2 * Hz to obtain the first compensation value; Where H2 is the first compensation value; K2 is the second preset parameter; Hz is the compressor frequency.

4. The method according to claim 1, wherein Determining the second compensation value according to the indoor ambient temperature includes: Calculating H3 = K3 * Tai to obtain the second compensation value; Where H3 is the second compensation value; K3 is the third preset parameter; Tai is the indoor ambient temperature.

5. The method according to any one of claims 1 to 4, characterized in that Determining the initial expansion valve opening according to the alternative expansion valve opening, the first compensation value, and the second compensation value includes: Calculating Y = H1 + H2 + H3 + c to obtain the initial expansion valve opening; Where H1 is the alternative expansion valve opening; H2 is the first compensation value; H3 is the second compensation value; c is the fourth preset parameter.

6. A device for controlling the opening degree of an expansion valve, characterized in that, Including: An acquisition module configured to acquire the indoor ambient temperature, outdoor ambient temperature, inner coil temperature, and compressor frequency; An alternative expansion valve opening determination module configured to determine the temperature difference coefficient according to the temperature difference between the indoor ambient temperature and the outdoor ambient temperature; and determine the alternative expansion valve opening according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency; A first compensation value determination module configured to determine the first compensation value according to the compressor frequency; A second compensation value determination module configured to determine the second compensation value according to the indoor ambient temperature; An operation module configured to determine the initial expansion valve opening according to the alternative expansion valve opening, the first compensation value, and the second compensation value; And trigger the expansion valve to operate according to the initial expansion valve opening; The alternative expansion valve opening determination module is configured to determine the alternative expansion valve opening according to the temperature difference coefficient, the inner coil temperature, and the compressor frequency in the following manner: calculate H1 = K1 * Hz / (W * (Tai - Teva)), and obtain the alternative expansion valve opening; where H1 is the alternative expansion valve opening; K1 is a first preset parameter; Hz is the compressor frequency; W is the temperature difference coefficient; Teva is the inner coil temperature; and Tai is the indoor ambient temperature.

7. An air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the method for controlling the expansion valve opening according to any one of claims 1 to 5 when running the program instructions.

8. A storage medium stores program instructions, characterized in that, When running, the program instructions execute the method for controlling the expansion valve opening according to any one of claims 1 to 5.

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