An electronic expansion valve control method and device of an air conditioner and the air conditioner

Abstract

The application discloses an electronic expansion valve control method and device of an air conditioner and the air conditioner, relates to the technical field of air conditioners, and discloses an electronic expansion valve control method of an air conditioner, which comprises the following steps: when the air conditioner is in a segmented air supply mode, detecting a current windless air supply mode of the air conditioner; determining an initial target opening degree of the electronic expansion valve based on an air supply area corresponding to the windless air supply mode; wherein the initial target opening degree is positively correlated with the air supply area; and controlling the opening degree of the electronic expansion valve to be the initial target opening degree. The application can adaptively adjust the refrigerant flow in the pipeline according to the air supply area of the current windless air supply mode, thereby adjusting the air supply amount of the indoor unit, meeting the air outlet amount requirements of different air outlets, ensuring the constant air outlet temperature of the air outlet, and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to an electronic expansion valve control method, device, and air conditioner for an air conditioner. Background Technology

[0002] As people's demands for air conditioning comfort gradually increase, cabinet air conditioners with multiple air outlets that independently deliver air have been developed. One or more of these outlets can be set to a "windless" mode, while the others operate in a regular airflow mode. In the windless mode, the left and right air deflectors are typically closed, and the airflow is achieved through micro-perforations on the deflectors. However, during windless mode operation, changes in the position or number of outlets providing windless airflow will also affect the position and size of the regular airflow outlets. For example, in cooling mode, smaller regular airflow outlets result in lower air temperatures, while larger outlets result in higher air temperatures. Different numbers or positions of outlets providing regular airflow can lead to variations in air volume and temperature, making it impossible to maintain a constant outlet temperature and negatively impacting the user experience. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides an electronic expansion valve control method, device, and air conditioner. This method adaptively adjusts the refrigerant flow rate in the duct according to the air delivery area of ​​the current windless air delivery mode, thereby adjusting the air volume of the indoor unit to meet the air volume requirements of different air outlets. This ensures a constant air outlet temperature and improves the user experience.

[0004] According to an embodiment of the present invention, an electronic expansion valve control method for an air conditioner is provided, comprising: when the air conditioner is operating in a segmented air supply mode, detecting the current windless air supply mode of the air conditioner; determining an initial target opening degree of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode; wherein the initial target opening degree is positively correlated with the air supply area; and controlling the opening degree of the electronic expansion valve to be the initial target opening degree.

[0005] By adopting the above technical solution, when the air conditioner is running in segmented air supply mode, the initial target opening of the electronic expansion valve is determined according to the air supply area corresponding to the windless air supply mode. The refrigerant flow in the pipe can be adaptively adjusted according to the size of the air supply area of ​​the current windless air supply mode, thereby adjusting the air supply volume of the indoor unit. By controlling the initial target opening to be positively correlated with the air supply area, when the air supply area increases, the air supply volume can be increased to meet the air supply volume requirements of different air outlets, thereby ensuring a constant air outlet temperature and improving the user experience.

[0006] Preferably, the windless air supply mode includes a conventional air outlet and a windless air outlet, and the step of determining the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode includes:

[0007] Calculate the area ratio of the conventional air outlet area to the total air outlet area in the windless air supply mode, and determine the initial target opening of the electronic expansion valve based on the area ratio.

[0008] By adopting the above technical solution, the area ratio of the conventional air outlet area to the total air outlet area is calculated, and the initial target opening of the electronic expansion valve is determined based on the area ratio. This allows for adjustment of the indoor unit's air volume according to changes in the air outlet area, thereby keeping the air outlet temperature constant and improving the rationality of air outlet temperature control.

[0009] Preferably, the initial target opening degree = P0*X*Y; where P0 is the electronic expansion valve opening degree corresponding to the area ratio of 1, X is the area ratio, Y is the frequency correction coefficient, and the frequency correction coefficient is positively correlated with the frequency of the compressor.

[0010] By adopting the above technical solution, the initial target opening of the electronic expansion valve is calculated based on the product of the opening degree of the electronic expansion valve in the conventional full-open mode, the area ratio, and the frequency correction coefficient. This makes the calculated initial target opening degree of the electronic expansion valve more consistent with the actual operation of the air conditioner, while meeting the air volume requirements of different air outlet areas and improving the operating effect of the air conditioner.

[0011] Preferably, the electronic expansion valve control method further includes: monitoring the coil temperature of the indoor evaporator and obtaining the target coil temperature of the indoor evaporator; after the electronic expansion valve has been running at the initial target opening for a first preset time, calculating the temperature difference between the current coil temperature and the target coil temperature; and correcting the opening of the electronic expansion valve based on the temperature difference.

[0012] By adopting the above technical solution, after the air conditioner has been running for a period of time, the opening of the electronic expansion valve is corrected based on the temperature difference between the current coil temperature and the target coil temperature. This ensures that the outlet air temperature remains constant while the current coil temperature can quickly reach the target coil temperature, thus guaranteeing the heat exchange requirements of the indoor unit and meeting user needs.

[0013] Preferably, the step of correcting the opening of the electronic expansion valve based on the temperature difference includes:

[0014] Determine whether the temperature difference is equal to 0. If the temperature difference is not equal to 0, control the target opening of the electronic expansion valve to increase or decrease to the first preset opening.

[0015] By adopting the above technical solution, when the temperature difference between the current coil temperature and the target coil temperature is not equal to 0, the opening of the electronic expansion valve is increased or decreased to make the actual coil temperature gradually approach the target coil temperature, thereby improving the stability of the air conditioner operation.

[0016] Preferably, the first preset opening degree = initial target opening degree + ΔT*K; where ΔT is the temperature difference value, K is the temperature difference correction coefficient, and the temperature difference correction coefficient is positively correlated with the temperature difference value.

[0017] Preferably, the electronic expansion valve control method further includes: if the temperature difference is equal to 0, controlling the opening degree of the electronic expansion valve to remain unchanged.

[0018] By adopting the above technical solution, the opening of the electronic expansion valve can be kept constant when the temperature difference is equal to 0. This ensures that the air outlet temperature is constant when air is discharged from different outlets, and also keeps the coil temperature close to the target coil temperature, thereby improving the reliability of the air conditioning electronic expansion valve control.

[0019] According to an embodiment of the present invention, another aspect provides an electronic expansion valve control device for an air conditioner, comprising: a detection module, configured to detect the current windless air supply mode of the air conditioner when the air conditioner is operating in a segmented air supply mode; a determination module, configured to determine an initial target opening degree of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode; and a control module, configured to control the opening degree of the electronic expansion valve to the initial target opening degree.

[0020] According to an embodiment of the present invention, another aspect provides an air conditioner, including: multiple air outlets, a computer-readable storage medium storing a computer program, and a processor, wherein the computer program is read and executed by the processor to implement the method as described in any of the first aspects.

[0021] According to an embodiment of the present invention, another aspect provides a computer-readable storage medium storing a computer program that, when read and executed by a processor, implements the method as described in any of the first aspects.

[0022] The present invention has the following beneficial effects: By determining the initial target opening of the electronic expansion valve according to the air supply area corresponding to the windless air supply mode when the air conditioner is running in segmented air supply mode, the refrigerant flow in the pipe can be adaptively adjusted according to the size of the air supply area of ​​the current windless air supply mode, thereby adjusting the air supply volume of the indoor unit. By controlling the initial target opening to be positively correlated with the air supply area, when the air supply area increases, the air supply volume can be increased to meet the air supply volume requirements of each air outlet, thereby ensuring a constant air outlet temperature and improving the user experience. Attached Figure Description

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] Figure 1 A flowchart of an electronic expansion valve control method for an air conditioner provided by the present invention;

[0026] Figure 2 A schematic diagram of the structure of an electronic expansion valve control device for an air conditioner provided by the present invention. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] This embodiment provides an electronic expansion valve control method for an air conditioner. This method can be applied to an air conditioner that includes multiple air outlets, as shown in the example below. Figure 1 The flowchart shown is for the electronic expansion valve control method of an air conditioner. This method mainly includes the following steps S102 to S106:

[0030] Step S102: When the air conditioner is running in segmented air supply mode, detect the current windless air supply mode of the air conditioner;

[0031] When the air conditioner is turned on, if it receives a segmented air supply mode command sent by the user, it will detect the current windless air supply mode of the air conditioner based on the opening and closing status of each air outlet or the user's segmented air supply mode command.

[0032] For example, the aforementioned air conditioner includes three air outlets: upper, middle, and lower. The three left and right air guide vanes corresponding to these outlets are controlled by three separate motors. Each left and right air guide vane can be independently opened and closed. Micro-perforations are provided on the left and right air guide vanes. When the left and right air guide vanes are closed, air can be blown out at a low speed from these micro-perforations, achieving a windless airflow function. This windless airflow mode can include eight different airflow modes:

[0033] ① No wind mode: The upper left and right air guides are closed, while the middle left and right air guides and the lower left and right air guides are open;

[0034] ② No wind mode: The middle section left and right air guides are closed, and the upper section left and right air guides and the lower section left and right air guides are open;

[0035] ③ No wind at the bottom mode: The left and right air guides at the bottom are closed, while the left and right air guides at the top and middle are open;

[0036] ④ No wind sensation mode: The upper and lower left and right air guides are closed, and the middle left and right air guides are open;

[0037] ⑤ No wind in the middle and lower sections: The left and right air guides in the middle section and the left and right air guides in the lower section are closed, and the left and right air guides in the upper section are open;

[0038] ⑥ Upper and middle windless mode: The upper and middle left and right air guides are closed, and the lower left and right air guides are open;

[0039] ⑦ No wind mode: The upper left and right air guides, the middle left and right air guides, and the lower left and right air guides are all closed;

[0040] ⑧ Normal Full-Open Mode: The upper left and right air guides, the middle left and right air guides, and the lower left and right air guides are all open.

[0041] Step S104: Determine the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode;

[0042] The initial target opening is positively correlated with the air supply area. When the air supply area corresponding to the user-set windless air supply mode is larger, the required air volume is larger. By controlling the initial target opening of the electronic expansion valve to increase the refrigerant flow in the indoor unit, the cooling or heating capacity is increased, thereby increasing the air supply volume to meet the air supply volume requirements of the large area air outlet.

[0043] Step S106: Control the opening degree of the electronic expansion valve to the initial target opening degree.

[0044] The electronic expansion valve is controlled to operate according to the calculated initial target opening, thereby adjusting the air volume according to different air outlet areas, and thus keeping the air outlet temperature constant when the air outlet area changes.

[0045] The electronic expansion valve control method for the air conditioner provided in this embodiment determines the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode when the air conditioner is running in segmented air supply mode. It can adaptively adjust the refrigerant flow in the pipe according to the size of the air supply area of ​​the current windless air supply mode, thereby adjusting the air supply volume of the indoor unit. By controlling the initial target opening to be positively correlated with the air supply area, when the air supply area increases, the air supply volume can be increased to meet the air supply volume requirements of each air outlet, thereby ensuring a constant air outlet temperature and improving the user experience.

[0046] In one embodiment, the aforementioned windless air supply mode includes a conventional air outlet and a windless air outlet. This embodiment provides a specific implementation method for determining the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode:

[0047] Calculate the ratio of the area of ​​the conventional air outlet to the total air outlet area in the windless air supply mode, and determine the initial target opening of the electronic expansion valve based on the area ratio.

[0048] The aforementioned conventional air outlets are those with the left and right air guides open, while the aforementioned air outlets without a draft are those with the left and right air guides closed. By calculating the area ratio of the conventional air outlets to the total air outlet area, and determining the initial target opening of the electronic expansion valve based on this ratio, the air volume of the indoor unit can be adjusted according to changes in the air outlet area to maintain a constant outlet temperature, thus improving the rationality of outlet temperature control.

[0049] In one specific implementation, the initial target opening is P0 * X * Y;

[0050] Wherein, P0 is the opening degree of the electronic expansion valve when the area ratio is 1 (i.e., the opening degree of the electronic expansion valve when the air supply mode is the normal full-open mode), X is the area ratio, and Y is the frequency correction coefficient. The frequency correction coefficient is positively correlated with the frequency of the compressor. The value range of the frequency correction coefficient is 0 to 100%. In order to meet the cooling or heating needs of the air conditioner, the higher the frequency of the compressor, the larger the value of the frequency correction coefficient.

[0051] For example, let the actual height of the upper, middle, and lower air outlets account for A% / B% / C% of the total air outlet height, respectively, where A, B, and C all range from 0 to 100, and A+B+C=100. When the windless air supply mode is the upper windless mode, X=(B+C) / 100*100%; when the windless air supply mode is the middle windless mode, X=(A+C) / 100*100%; when the windless air supply mode is the lower windless mode, X=(A+B) / 100*100%; when the windless air supply mode is the upper and middle windless mode, X=C / 100*100%; when the windless air supply mode is the upper and lower windless mode, X=B / 100*100%; when the windless air supply mode is the middle and lower windless mode, X=A / 100.

[0052] The initial target opening of the electronic expansion valve is calculated by multiplying the opening degree of the electronic expansion valve in the normal full-open mode with the area ratio and the frequency correction coefficient. This makes the calculated initial target opening degree of the electronic expansion valve more consistent with the actual operation of the air conditioner, while meeting the air volume requirements of different air outlet areas and improving the operating effect of the air conditioner.

[0053] In one embodiment, the method provided in this embodiment further includes the following steps:

[0054] Step (1) Monitor the coil temperature of the indoor evaporator and obtain the target coil temperature of the indoor evaporator;

[0055] The temperature sensor located in the middle of the indoor unit's coil detects the coil temperature of the indoor evaporator in real time and obtains the preset target coil temperature. Alternatively, the target coil temperature corresponding to the current load demand of the evaporator can be set according to the air conditioner's operating mode and the indoor ambient temperature.

[0056] Step (2): After the electronic expansion valve has been running at the initial target opening for a first preset time, calculate the temperature difference between the current coil temperature and the target coil temperature;

[0057] The aforementioned first preset duration can range from 3 to 10 minutes, with a preferred value of 5 minutes. After the air conditioner has been running in segmented airflow mode for a period of time, the current coil temperature T detected by the temperature sensor is obtained. 管 Calculate the current coil temperature and the target coil temperature T. 管0 Temperature difference ΔT = T 管 -T 管0 .

[0058] Step (3): Correct the opening degree of the electronic expansion valve based on the temperature difference.

[0059] The opening of the electronic expansion valve is adjusted based on the temperature difference between the current coil temperature and the target coil temperature, so that while the outlet air temperature remains constant, the current coil temperature can quickly reach the target coil temperature, ensuring the heat exchange requirements of the indoor unit and thus meeting user needs.

[0060] In one specific implementation, it is determined whether the temperature difference is equal to 0. If the temperature difference is not equal to 0, the opening of the electronic expansion valve is controlled to increase or decrease to a first preset opening.

[0061] If the temperature difference between the current coil temperature and the target coil temperature is greater than 0, it indicates that the current coil temperature is higher than the target coil temperature, and the opening of the electronic expansion valve is increased to the first preset opening. If the temperature difference between the current coil temperature and the target coil temperature is less than 0, it indicates that the current coil temperature is lower than the target coil temperature, and the opening of the electronic expansion valve is decreased to the first preset opening.

[0062] By controlling the opening of the electronic expansion valve to increase or decrease when the temperature difference between the current coil temperature and the target coil temperature is not equal to 0, the actual coil temperature gradually approaches the target coil temperature, thereby improving the stability of the air conditioner's operation.

[0063] In one specific implementation, the first preset opening degree = initial target opening degree + ΔT*K; where ΔT is the temperature difference value, K is the temperature difference correction coefficient, the value range of the temperature difference correction coefficient is 0 to 100%, the temperature difference correction coefficient is positively correlated with the temperature difference value, and the larger the temperature difference value, the larger the temperature difference correction coefficient.

[0064] If the temperature difference between the current coil temperature and the target coil temperature is greater than 0, then ΔT is greater than 0, and the initial target opening is increased to the first preset opening; if the temperature difference between the current coil temperature and the target coil temperature is less than 0, then ΔT is less than 0, and the initial target opening is decreased to the first preset opening.

[0065] If the temperature difference is 0, the opening of the electronic expansion valve remains unchanged. If the temperature difference between the current coil temperature and the target coil temperature is 0, it means that the current coil temperature is equal to the target coil temperature. By keeping the opening of the electronic expansion valve unchanged, the outlet temperature can be kept constant when air is discharged from different outlets, and the coil temperature can always be close to the target coil temperature, thus improving the reliability of the air conditioning electronic expansion valve control.

[0066] The electronic expansion valve control method for the air conditioner provided in this embodiment enables the adjustment of the air outlet temperature according to the air outlet area of ​​different air outlets, so that the air outlet temperature is constant when air is emitted from different air outlets, thereby improving the user experience.

[0067] Corresponding to the electronic expansion valve control method for air conditioners provided in the above embodiments, this embodiment of the invention provides an example of applying the above-mentioned electronic expansion valve control method for air conditioners, which can be specifically performed according to the following steps:

[0068] Step 1: After turning on the air conditioner, check the indoor ambient temperature T. 环 Determine the target coil temperature T of the indoor evaporator. 管0 And constantly monitor the current coil temperature T of the indoor evaporator. 管 .

[0069] Step 2: Detect the segmented air delivery mode of the left and right air guide vanes, and control the electronic expansion valve to operate at the initial target opening P. 初 Run, P 初 =P0*X*Y;

[0070] P0 is the opening degree of the electronic expansion valve when the area ratio is 1, X is the ratio of the area of ​​the non-windless air outlet to the total air outlet area in the current segmented air supply mode, and Y is the frequency correction coefficient, which is positively correlated with the frequency of the compressor.

[0071] When the windless air supply mode is the upper windless mode, X = (B+C) / 100*100%; when the windless air supply mode is the middle windless mode, X = (A+C) / 100*100%; when the windless air supply mode is the lower windless mode, X = (A+B) / 100*100%; when the windless air supply mode is the upper-middle windless mode, X = C / 100*100%; when the windless air supply mode is the upper-lower windless mode, X = B / 100*100%; when the windless air supply mode is the middle-lower windless mode, X = A / 100.

[0072] Step 3: After running for N minutes, determine the difference ΔT between the current coil temperature and the target coil temperature, where ΔT = T. 管 -T 管0 ;

[0073] Step 4: If ΔT = 0, keep the opening of the electronic expansion valve unchanged; if ΔT ≠ 0, control the target opening of the electronic expansion valve to be P = P 初 +△T*K.

[0074] △T is the temperature difference between the current coil temperature and the target coil temperature, and K is the temperature difference correction coefficient, which is positively correlated with the temperature difference.

[0075] Corresponding to the electronic expansion valve control method for air conditioners provided in the above embodiments, this invention provides an electronic expansion valve control device for air conditioners. This device can be applied to air conditioners, see below. Figure 2 The diagram shows the structure of the electronic expansion valve control device for an air conditioner. This device includes the following modules:

[0076] The detection module 21 is used to detect the current windless air supply mode of the air conditioner when the air conditioner is running in the segmented air supply mode.

[0077] The determination module 22 is used to determine the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode;

[0078] The control module 23 is used to control the opening degree of the electronic expansion valve to the initial target opening degree.

[0079] The electronic expansion valve control device for the air conditioner provided in this embodiment determines the initial target opening of the electronic expansion valve based on the air delivery area corresponding to the windless air delivery mode when the air conditioner is in segmented air delivery mode. It can adaptively adjust the refrigerant flow in the pipe according to the size of the air delivery area of ​​the current windless air delivery mode, thereby adjusting the air delivery volume of the indoor unit. By controlling the initial target opening to be positively correlated with the air delivery area, when the air delivery area increases, the air delivery volume can be increased to meet the air delivery volume requirements of each air outlet, thereby ensuring a constant air outlet temperature and improving the user experience.

[0080] In one embodiment, the above-mentioned windless air supply mode includes a regular air outlet and a windless air outlet. The determination module 22 is used to calculate the area ratio of the regular air outlet area of ​​the windless air supply mode to the total air outlet area, and determine the initial target opening of the electronic expansion valve based on the area ratio.

[0081] In one implementation, the initial target opening degree is P0*X*Y; where P0 is the opening degree of the electronic expansion valve when the area ratio is 1, X is the area ratio, and Y is the frequency correction coefficient, which is positively correlated with the frequency of the compressor.

[0082] In one embodiment, the above-mentioned device further includes:

[0083] The correction module is used to monitor the coil temperature of the indoor evaporator and obtain the target coil temperature of the indoor evaporator; after the electronic expansion valve runs at the initial target opening for a first preset time, it calculates the temperature difference between the current coil temperature and the target coil temperature; and corrects the opening of the electronic expansion valve based on the temperature difference.

[0084] In one embodiment, the correction module is used to determine whether the temperature difference is equal to 0. If the temperature difference is not equal to 0, the target opening of the electronic expansion valve is increased or decreased to a first preset opening.

[0085] In one embodiment, the first preset opening degree is equal to the initial target opening degree plus ΔT*K; where ΔT is the temperature difference and K is the temperature difference correction coefficient, which is positively correlated with the temperature difference.

[0086] In one embodiment, the correction module is used to control the opening of the electronic expansion valve to remain unchanged if the temperature difference is equal to 0.

[0087] The electronic expansion valve control device for the air conditioner provided in this embodiment enables the adjustment of the air outlet temperature according to the air outlet area of ​​different air outlets, so that the air outlet temperature is constant when air is emitted from different air outlets, thereby improving the user experience.

[0088] Corresponding to the electronic expansion valve control method for air conditioners provided in the above embodiments, this embodiment provides an air conditioner including: multiple air outlets, a computer-readable storage medium storing a computer program, and a processor. The computer program is read and executed by the processor to implement the electronic expansion valve control method for air conditioners provided in the above embodiments.

[0089] This embodiment also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the above-described embodiment of the electronic expansion valve control method for an air conditioner, achieving the same technical effect. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0090] Of course, those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by computer-controlled devices. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The storage medium can be a memory, a disk, an optical disk, etc.

[0091] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0092] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0093] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Regarding the electronic expansion valve control device and air conditioner disclosed in the embodiments, since they correspond to the electronic expansion valve control method of the air conditioner disclosed in the embodiments, the description is relatively simple, and relevant parts can be referred to the method section.

[0094] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0095] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A method for controlling an electronic expansion valve in an air conditioner, characterized in that, include: When the air conditioner is running in segmented air supply mode, detect the current windless air supply mode of the air conditioner; The initial target opening of the electronic expansion valve is determined based on the air supply area corresponding to the windless air supply mode; wherein, the initial target opening is positively correlated with the air supply area; The opening degree of the electronic expansion valve is controlled to be the initial target opening degree; In the windless air supply mode, the air conditioner has a regular air outlet and a windless air outlet. The step of determining the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode includes: Calculate the area ratio of the conventional air outlet area to the total air outlet area, and determine the initial target opening of the electronic expansion valve based on the area ratio; The initial target opening degree = P0 * X * Y; where P0 is the electronic expansion valve opening degree corresponding to the area ratio of 1, X is the area ratio, and Y is the frequency correction coefficient, which is positively correlated with the compressor frequency.

2. The electronic expansion valve control method as described in claim 1, characterized in that, Also includes: Monitor the coil temperature of the indoor evaporator to obtain the target coil temperature of the indoor evaporator; After the electronic expansion valve has been running at the initial target opening for a first preset time, the temperature difference between the current coil temperature and the target coil temperature is calculated. The opening degree of the electronic expansion valve is corrected based on the temperature difference.

3. The electronic expansion valve control method as described in claim 2, characterized in that, The step of correcting the opening of the electronic expansion valve based on the temperature difference includes: Determine whether the temperature difference is equal to 0. If the temperature difference is not equal to 0, control the target opening of the electronic expansion valve to increase or decrease to the first preset opening.

4. The electronic expansion valve control method as described in claim 3, characterized in that, The first preset opening degree = initial target opening degree + ΔT*K; where ΔT is the temperature difference value, K is the temperature difference correction coefficient, and the temperature difference correction coefficient is positively correlated with the temperature difference value.

5. The electronic expansion valve control method as described in claim 3, characterized in that, Also includes: If the temperature difference is equal to 0, the opening of the electronic expansion valve is kept constant.

6. An electronic expansion valve control device for an air conditioner, characterized in that, The apparatus for implementing the method according to any one of claims 1-5 comprises: The detection module is used to detect the current windless air supply mode of the air conditioner when the air conditioner is running in the segmented air supply mode. The determination module is used to determine the initial target opening of the electronic expansion valve based on the air supply area corresponding to the windless air supply mode. The control module is used to control the opening degree of the electronic expansion valve to the initial target opening degree.

7. An air conditioner, characterized in that, include: The method comprises multiple air outlets, a computer-readable storage medium storing a computer program, and a processor, wherein the computer program is read and executed by the processor to implement the method as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when read and executed by a processor, implements the method as described in any one of claims 1-5.

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