Control method, controller, air conditioner, and storage medium for air conditioner

Abstract

This invention proposes a control method, controller, air conditioner, and storage medium for an air conditioner. In dehumidification mode, the method acquires the current temperature and target temperature range of the indoor heat exchanger, the opening adjustment range of the throttling device, and its current opening. Based on the current temperature, target temperature range, and current opening, a first target opening of the throttling device is determined. When the first target opening is within the opening adjustment range, the opening of the throttling device is adjusted to the first target opening. When the first target opening is outside the opening adjustment range, the opening of the throttling device is adjusted to a second target opening, and the indoor fan is adjusted to a target speed and / or the compressor is adjusted to a target operating frequency, where the second target opening is within the opening adjustment range. This embodiment of the invention prioritizes adjusting the opening of the throttling device before adjusting the speed of the indoor fan and / or the operating frequency of the compressor, thus avoiding the problems of increased energy consumption or decreased dehumidification effect caused by directly adjusting the compressor frequency.

Description

TECHNICAL FIELD

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

[0002] At present, when the air conditioner dehumidifies at a low temperature condition where the dew point temperature is higher than the ice point temperature, the temperature of the evaporator is associated with the dehumidification effect, specifically, when the temperature of the evaporator is less than the ice point temperature, frost will be formed, thereby causing the dehumidification effect to be poor; when the temperature of the evaporator is higher, the condensation generation effect is poor, thus also causing the dehumidification effect to be poor. In this regard, the existing air conditioner often directly controls the frequency of the compressor to adjust the temperature of the evaporator, thereby improving the dehumidification effect of the evaporator. However, directly adjusting the frequency of the compressor may increase the energy consumption or reduce the dehumidification effect, specifically, directly increasing the frequency of the compressor will increase the energy consumption of the air conditioner; in addition, directly reducing the frequency of the compressor will cause the refrigerant flow to decrease, thereby reducing the heat exchange amount of the evaporator, causing the dehumidification amount to decrease, which is not conducive to dehumidification. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a control method of an air conditioner, a controller, an air conditioner and a storage medium, which can enhance the dehumidification effect of the air conditioner or reduce the energy consumption of the air conditioner.

[0004] In a first aspect, an embodiment of the present application provides a control method of an air conditioner, the air conditioner being provided with a throttling device; the method comprising: in a dehumidification mode, acquiring a current temperature of an indoor heat exchanger and a target temperature interval, an opening degree adjustment interval and a current opening degree of the throttling device; determining a first target opening degree of the throttling device according to the current temperature, the target temperature interval and the current opening degree; when the first target opening degree is located in the opening degree adjustment interval, adjusting the opening degree of the throttling device to the first target opening degree; when the first target opening degree is located outside the opening degree adjustment interval, determining a second target opening degree of the throttling device, and determining a target rotating speed of an indoor fan and / or a target operating frequency of a compressor, and adjusting the opening degree of the throttling device to the second target opening degree, and adjusting the rotating speed of the indoor fan to the target rotating speed and / or adjusting the operating frequency of the compressor to the target operating frequency, wherein the second target opening degree is located in the opening degree adjustment interval.

[0005] The control method of the air conditioner according to the embodiments of the present application has at least the following beneficial effects: in the dehumidification mode, in order to realize the temperature regulation of the indoor heat exchanger, the embodiments of the present application do not directly regulate the operating frequency of the compressor, but preferentially regulate the opening degree of the throttling device. Specifically, first, the embodiments of the present application obtain the current temperature of the indoor heat exchanger, the opening degree regulation interval and the current opening degree of the throttling device, and then determine the first target opening degree of the throttling device according to the current temperature, the target temperature interval and the current opening degree. If the first target opening degree is located in the opening degree regulation interval, it indicates that the embodiments of the present application only need to regulate the opening degree of the throttling device to meet the temperature regulation of the indoor heat exchanger, so the embodiments of the present application regulate the opening degree of the throttling device to the first target opening degree without regulating the operating frequency of the compressor. If the first target opening degree is located outside the opening degree regulation interval, it indicates that the embodiments of the present application need to regulate the opening degree of the throttling device, the rotating speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger, so the embodiments of the present application preferentially regulate the opening degree of the throttling device to the second target opening degree, and also appropriately regulate the rotating speed of the indoor fan to the target rotating speed and / or regulate the operating frequency of the compressor to the target operating frequency. Therefore, when the embodiments of the present application need to increase the temperature of the indoor heat exchanger in the dehumidification mode, the opening degree of the throttling device can be regulated first, and the rotating speed of the indoor fan is regulated and / or the compressor is reduced in frequency when it cannot be met, which can avoid the problem of poor dehumidification effect caused by directly reducing the frequency of the compressor. In addition, when the embodiments of the present application need to reduce the temperature of the indoor heat exchanger in the dehumidification mode, the opening degree of the throttling device can be regulated first, and the rotating speed of the indoor fan is regulated and / or the compressor is increased in frequency when it cannot be met, which can avoid the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0006] According to some embodiments of the present application, the regulating the opening degree of the throttling device to the second target opening degree comprises one of the following: regulating the opening degree of the throttling device to the upper limit value of the opening degree interval of the opening degree regulation interval; regulating the opening degree of the throttling device to the lower limit value of the opening degree interval of the opening degree regulation interval.

[0007] According to some embodiments of the present application, in the case of adjusting the rotation speed of the indoor fan to the target rotation speed and adjusting the operating frequency of the compressor to the target operating frequency, the adjusting the rotation speed of the indoor fan to the target rotation speed and adjusting the operating frequency of the compressor to the target operating frequency comprises one of the following: when the second target opening degree is greater than the current opening degree, obtaining a rotation speed adjustment interval of the indoor fan, adjusting the rotation speed of the indoor fan to an upper limit value of a rotation speed interval of the rotation speed adjustment interval, and then adjusting the operating frequency of the compressor to the target operating frequency; when the second target opening degree is less than the current opening degree, obtaining a rotation speed adjustment interval of the indoor fan, adjusting the rotation speed of the indoor fan to a lower limit value of a rotation speed interval of the rotation speed adjustment interval, and then adjusting the operating frequency of the compressor to the target operating frequency.

[0008] According to some embodiments of the present application, the target temperature interval is provided with a temperature interval lower limit value; and the determining the first target opening degree of the throttling device according to the current temperature, the target temperature interval and the current opening degree comprises: in the case of the current temperature being less than or equal to the temperature interval lower limit value, determining an opening degree increase amount of the throttling device; and determining the first target opening degree of the throttling device according to the current opening degree and the opening degree increase amount.

[0009] According to some embodiments of the present application, the target temperature interval is provided with a temperature interval upper limit value; and the determining the first target opening degree of the throttling device according to the current temperature, the target temperature interval and the current opening degree comprises: in the case of the current temperature being greater than the temperature interval upper limit value, determining an opening degree decrease amount of the throttling device; and determining the first target opening degree of the throttling device according to the current opening degree and the opening degree decrease amount.

[0010] According to some embodiments of the present application, the temperature interval upper limit value is obtained by the following steps: obtaining an air temperature and an air humidity of an air inlet of the indoor heat exchanger, and determining a dew point temperature according to the air temperature and the air humidity; and performing difference processing on the dew point temperature and a preset deviation value to obtain the temperature interval upper limit value.

[0011] According to some embodiments of the present application, the determining the first target opening degree of the throttling device according to the current temperature, the target temperature interval and the current opening degree comprises: in the case of the current temperature being within the target temperature interval, determining the current opening degree as the first target opening degree of the throttling device.

[0012] According to some embodiments of the present application, before the step of determining the first target opening degree of the throttling device according to the current temperature, the target temperature range and the current opening degree, the method further comprises: obtaining an air temperature and an air humidity of an air inlet of the indoor heat exchanger, and determining a dew point temperature according to the air temperature and the air humidity; and in a case that the dew point temperature is greater than a first preset temperature and the current temperature is less than the dew point temperature, determining the first target opening degree of the throttling device according to the current temperature, the target temperature range and the current opening degree.

[0013] According to some embodiments of the present application, the method further comprises: in a case that the dew point temperature is greater than the first preset temperature and the current temperature is greater than or equal to the dew point temperature, reducing the opening degree of the throttling device and / or increasing the operating frequency of the compressor.

[0014] According to some embodiments of the present application, the method further comprises: in a case that the dew point temperature is less than or equal to the first preset temperature, defrosting the indoor heat exchanger according to the current temperature.

[0015] In a second aspect, embodiments of the present application provide a controller, comprising: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the control method of the air conditioner as described in the first aspect.

[0016] The controller according to the embodiment of the present application has at least the following beneficial effects: in the dehumidification mode, in order to realize the temperature regulation of the indoor heat exchanger, the embodiment of the present application does not directly regulate the operating frequency of the compressor, but preferentially regulates the opening degree of the throttling device. Specifically, the embodiment of the present application first acquires the current temperature of the indoor heat exchanger, the opening degree regulation range and the current opening degree of the throttling device, and then determines the first target opening degree of the throttling device according to the current temperature, the target temperature range and the current opening degree; if the first target opening degree is located in the opening degree regulation range, it indicates that the embodiment of the present application only needs to regulate the opening degree of the throttling device to meet the temperature regulation of the indoor heat exchanger, so the embodiment of the present application regulates the opening degree of the throttling device to the first target opening degree without regulating the operating frequency of the compressor; if the first target opening degree is located outside the opening degree regulation range, it indicates that the embodiment of the present application needs to regulate the opening degree of the throttling device, the rotating speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger, so the embodiment of the present application preferentially regulates the opening degree of the throttling device to the second target opening degree, and also appropriately regulates the rotating speed of the indoor fan to the target rotating speed and / or regulates the operating frequency of the compressor to the target operating frequency. Therefore, when the embodiment of the present application needs to increase the temperature of the indoor heat exchanger in the dehumidification mode, the opening degree of the throttling device can be regulated first, the rotating speed of the indoor fan can be regulated and / or the compressor can be down-regulated when it cannot be met, which can avoid the problem of poor dehumidification effect caused by directly down-regulating the compressor; in addition, when the embodiment of the present application needs to reduce the temperature of the indoor heat exchanger in the dehumidification mode, the opening degree of the throttling device can be regulated first, the rotating speed of the indoor fan can be regulated and / or the compressor can be up-regulated when it cannot be met, which can avoid the problem of increased energy consumption caused by directly up-regulating the compressor.

[0017] In a third aspect, the embodiment of the present application provides an air conditioner comprising the controller according to the second aspect.

[0018] The air conditioner according to the embodiment of the present application has at least the following beneficial effects: in the dehumidification mode, in order to realize the temperature regulation of the indoor heat exchanger, the embodiment of the present application does not directly regulate the operating frequency of the compressor, but preferentially regulates the opening degree of the throttling device. Specifically, the embodiment of the present application first acquires the current temperature of the indoor heat exchanger, the opening degree regulation range and the current opening degree of the throttling device, and then determines the first target opening degree of the throttling device according to the current temperature, the target temperature range and the current opening degree; if the first target opening degree is located in the opening degree regulation range, it indicates that the embodiment of the present application only needs to regulate the opening degree of the throttling device to meet the temperature regulation of the indoor heat exchanger, so the embodiment of the present application regulates the opening degree of the throttling device to the first target opening degree without regulating the operating frequency of the compressor; if the first target opening degree is located outside the opening degree regulation range, it indicates that the embodiment of the present application needs to regulate the opening degree of the throttling device, the rotating speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger, so the embodiment of the present application preferentially regulates the opening degree of the throttling device to the second target opening degree, and also appropriately regulates the rotating speed of the indoor fan to the target rotating speed and / or regulates the operating frequency of the compressor to the target operating frequency. Therefore, when the embodiment of the present application needs to increase the temperature of the indoor heat exchanger in the dehumidification mode, the opening degree of the throttling device can be regulated first, the rotating speed of the indoor fan can be regulated and / or the compressor can be reduced in frequency when it fails to meet the requirement, which can avoid the problem of poor dehumidification effect caused by directly reducing the frequency of the compressor; in addition, when the embodiment of the present application needs to reduce the temperature of the indoor heat exchanger in the dehumidification mode, the opening degree of the throttling device can be regulated first, the rotating speed of the indoor fan can be regulated and / or the compressor can be increased in frequency when it fails to meet the requirement, which can avoid the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0019] In a fourth aspect, the embodiment of the present application provides a computer readable storage medium, which stores computer executable instructions for executing the control method of the air conditioner according to the first aspect.

[0020] The computer-readable storage medium according to embodiments of the present invention has at least the following beneficial effects: In dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the embodiments of the present invention do not directly adjust the operating frequency of the compressor, but instead prioritize adjusting the opening degree of the throttling device. Specifically, in this embodiment of the invention, the current temperature of the indoor heat exchanger, the opening adjustment range of the throttling device, and the current opening are first obtained. Then, based on the current temperature, the target temperature range, and the current opening, a first target opening of the throttling device is determined. If the first target opening is within the opening adjustment range, it means that this embodiment of the invention only needs to adjust the opening of the throttling device to meet the temperature regulation of the indoor heat exchanger. In this case, the opening of the throttling device will be adjusted to the first target opening without adjusting the operating frequency of the compressor. If the first target opening is outside the opening adjustment range, it means that this embodiment of the invention needs to adjust not only the opening of the throttling device but also the speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger. In this case, this embodiment of the invention will prioritize adjusting the opening of the throttling device to the second target opening, and will also appropriately adjust the speed of the indoor fan to the target speed and / or adjust the operating frequency of the compressor to the target operating frequency. Therefore, in this embodiment of the invention, when it is necessary to increase the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of reduced dehumidification effect caused by directly reducing the frequency of the compressor. In addition, in this embodiment of the invention, when it is necessary to decrease the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0023] Figure 1 This is a schematic diagram of a system architecture platform for performing a control method for an air conditioner according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of an air conditioner provided in one embodiment of the present invention;

[0025] Figure 3This is a flowchart of an air conditioner control method provided in one embodiment of the present invention;

[0026] Figure 4 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0027] Figure 5 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0028] Figure 6 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0029] Figure 7 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0030] Figure 8 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0031] Figure 9 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0032] Figure 10 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0033] Figure 11 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0034] Figure 12 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0035] Figure 13 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0036] Figure 14 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention;

[0037] Figure 15 This is an overall flowchart of an air conditioner control method provided in one embodiment of the present invention. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0040] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0041] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0042] In some situations, when air conditioners dehumidify at low temperatures (dew point higher than freezing point), the evaporator temperature is related to the dehumidification effect. Specifically, when the evaporator temperature is below the freezing point, frost will form, leading to poor dehumidification; conversely, when the evaporator temperature is high, condensation formation is less effective, also resulting in poor dehumidification. Current air conditioners often directly control the compressor frequency to regulate the evaporator temperature and improve dehumidification. However, directly adjusting the compressor frequency may increase energy consumption or reduce dehumidification. Specifically, increasing the compressor frequency increases energy consumption; conversely, decreasing the compressor frequency reduces refrigerant flow, decreasing evaporator heat exchange and thus reducing dehumidification capacity, which is detrimental to dehumidification.

[0043] Based on the above, embodiments of the present invention provide a control method, controller, air conditioner, and storage medium for an air conditioner. Specifically, in dehumidification mode, to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but instead prioritizes adjusting the opening degree of the throttling device. Therefore, when the temperature of the indoor heat exchanger needs to be increased in dehumidification mode, the present invention can first adjust the opening degree of the throttling device; if this is insufficient, then the speed of the indoor fan and / or the frequency of the compressor can be adjusted, thus avoiding the problem of reduced dehumidification effect caused by directly reducing the compressor frequency. Furthermore, when the temperature of the indoor heat exchanger needs to be decreased in dehumidification mode, the present invention can first adjust the opening degree of the throttling device; if this is insufficient, then the speed of the indoor fan and / or the frequency of the compressor can be adjusted, thus avoiding the problem of increased energy consumption caused by directly increasing the compressor frequency.

[0044] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0045] like Figure 1 As shown, Figure 1 This is a schematic diagram of a system architecture platform for performing a control method for an air conditioner, provided in an embodiment of the present invention.

[0046] The system architecture platform 100 of this embodiment includes one or more processors 110 and a memory 120. Figure 1 The example uses a processor 110 and a memory 120.

[0047] Processor 110 and memory 120 can be connected via a bus or other means. Figure 1 Taking the example of a connection between China and Israel via a bus.

[0048] Memory 120, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 120 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 120 may optionally include memory 120 remotely located relative to processor 110, and these remote memories can be connected to the system architecture platform 100 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0049] Those skilled in the art will understand that Figure 1 The device structure shown does not constitute a limitation on the system architecture platform 100, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0050] exist Figure 1 In the system architecture platform 100 shown, the processor 110 can be used to call the control program of the air conditioner stored in the memory 120, thereby realizing the control method of the air conditioner.

[0051] Based on the hardware structure of the above-mentioned system architecture platform 100, various embodiments of the air conditioner of the present invention are proposed.

[0052] like Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of an air conditioner provided in one embodiment of the present invention.

[0053] Specifically, the air conditioner in this embodiment of the invention includes, but is not limited to, an outdoor unit and an indoor unit. The outdoor unit includes, but is not limited to, a compressor 210 and an outdoor heat exchanger 220. The indoor unit includes, but is not limited to, a throttling device 230, an indoor heat exchanger 240 and an indoor fan 250. The compressor 210, the outdoor heat exchanger 220, the throttling device 230 and the indoor heat exchanger 240 together constitute a refrigerant circuit.

[0054] It should be noted that the outdoor heat exchanger 220 is a condenser, the indoor heat exchanger 240 is an evaporator, and the throttling device 230 can be an electronic expansion valve with multiple opening degree adjustment functions.

[0055] It is understood that the air conditioner in this embodiment of the invention can communicate with a controller so that the controller can control the opening degree of the throttling device 230 in the indoor unit and the speed of the indoor fan 250, as well as control the operating frequency of the compressor 210 in the outdoor unit.

[0056] Furthermore, it is understood that the structure of the aforementioned controller may include, for example: Figure 1 The processor 110 and memory 120 are shown.

[0057] In addition, it is understood that the aforementioned controller can be installed either on the air conditioner or independently outside the air conditioner.

[0058] Based on the above-mentioned system architecture platform 100 and the hardware structure of the air conditioner, various embodiments of the air conditioner control method of the present invention are proposed.

[0059] like Figure 3 As shown, Figure 3 This is a flowchart of a control method for an air conditioner provided in one embodiment of the present invention. The control method includes, but is not limited to, steps S100, S200, S300, and S400.

[0060] Step S100: In dehumidification mode, obtain the current temperature and target temperature range of the indoor heat exchanger, the opening adjustment range and current opening of the throttling device.

[0061] It should be noted that the current temperature of the indoor heat exchanger mentioned above is used to characterize the current refrigerant temperature in the evaporator, which can refer to the temperature in the middle of the evaporator or the temperature at other locations; when the current temperature of the indoor heat exchanger is the temperature in the middle of the evaporator, it is used to characterize the temperature of the refrigerant at the middle position of the evaporator main pipe in the evaporator.

[0062] It is worth noting that the target temperature range mentioned above can refer to the temperature range in which the indoor heat exchanger has a relatively good dehumidification effect in dehumidification mode. The target temperature range can be obtained by retrieving a pre-stored temperature range from local memory or by obtaining a temperature range input by the user. This embodiment of the invention does not limit the method of obtaining the target temperature range.

[0063] It is understood that, in embodiments of the present invention, a temperature sensor can be installed on the surface of the evaporator, such as in the middle of the evaporator, to collect the current temperature of the indoor heat exchanger in real time.

[0064] It is understood that the temperature sensor in the embodiments of the present invention can be a contact temperature sensor or a non-contact temperature sensor; in addition, the temperature sensor in the embodiments of the present invention can be an infrared temperature sensor or other types of temperature sensors, and the embodiments of the present invention do not limit the type of temperature sensor.

[0065] Additionally, it should be noted that the valve opening of the throttling device in this embodiment of the invention can be controlled by a stepper motor. Therefore, the air conditioner can obtain the current opening of the throttling device through the current control state of the stepper motor, and the air conditioner can also obtain the opening adjustment range of the throttling device through the permissible control state of the stepper motor, such as the permissible rotation angle.

[0066] It is understood that the opening adjustment range mentioned above refers to the range in which the throttling device can operate. The throttling device can only be adjusted within the opening adjustment range and cannot be adjusted outside the opening adjustment range.

[0067] Step S200: Determine the first target opening of the throttling device based on the current temperature, the target temperature range, and the current opening.

[0068] Specifically, the target temperature range in this embodiment of the invention can refer to the temperature range in which the indoor heat exchanger has a relatively good dehumidification effect in dehumidification mode. If the current temperature of the indoor heat exchanger is within the target temperature range, it indicates that the current dehumidification effect is good, and the air conditioner does not need to be adjusted; if the current temperature of the indoor heat exchanger is outside the target temperature range, it indicates that the current dehumidification effect is poor, and the air conditioner needs to be adjusted.

[0069] It should be noted that, in order to improve the dehumidification effect, when the current temperature of the indoor heat exchanger is outside the target temperature range, this embodiment of the invention will calculate the opening change based on the current temperature and the target temperature range. If the throttling device adjusts the opening change so that the temperature of the indoor heat exchanger falls into the target temperature range, then the dehumidification effect of the air conditioner will be improved.

[0070] In this embodiment of the invention, after calculating the change in opening based on the current temperature and the target temperature range, the current opening and the change in opening are further calculated to obtain the first target opening that the throttling device needs to achieve.

[0071] It is understandable that when the change in opening is an increase, the first target opening is greater than the current opening; when the change in opening is a decrease, the first target opening is less than the current opening.

[0072] Step S300: When the first target opening is within the opening adjustment range, adjust the opening of the throttling device to the first target opening.

[0073] Specifically, after determining the first target opening degree of the throttling device, this embodiment of the invention also needs to determine whether the first target opening degree falls within the opening degree adjustment range of the throttling device. If the first target opening degree is within the opening degree adjustment range, it indicates that this embodiment of the invention can make the temperature of the indoor heat exchanger fall within the target temperature range by adjusting the opening degree of the throttling device to the first target opening degree. In this case, this embodiment of the invention only needs to adjust the opening degree of the throttling device to the first target opening degree.

[0074] Step S400: When the first target opening is outside the opening adjustment range, determine the second target opening of the throttling device, and determine the target speed of the indoor fan and / or the target operating frequency of the compressor, and adjust the opening of the throttling device to the second target opening, and adjust the speed of the indoor fan to the target speed and / or adjust the operating frequency of the compressor to the target operating frequency, wherein the second target opening is within the opening adjustment range.

[0075] Specifically, after determining the first target opening degree of the throttling device, this embodiment of the invention also needs to determine whether the first target opening degree falls within the opening degree adjustment range of the throttling device. If the first target opening degree is not within the opening degree adjustment range, it indicates that even if this embodiment of the invention adjusts the opening degree of the throttling device to the upper limit or lower limit of the opening degree adjustment range, that is, adjusts the opening degree of the throttling device to the maximum or minimum opening degree, it is still impossible to make the temperature of the indoor heat exchanger fall into the target temperature range. In this case, after adjusting the opening degree of the throttling device to the second target opening degree of the opening degree adjustment range, this embodiment of the invention will also adjust the speed of the indoor fan, or adjust the operating frequency of the compressor, or simultaneously adjust the speed of the indoor fan and the operating frequency of the compressor.

[0076] It should be noted that, in order to reduce the frequency adjustment range of the compressor, the embodiments of the present invention will first adjust the opening degree of the throttling device to the upper limit or lower limit of the opening degree adjustment range, that is, adjust the opening degree of the throttling device to the maximum or minimum allowable opening degree, and then adjust the frequency of the compressor. This can reduce the problem of poor dehumidification effect or increased energy consumption caused by excessive frequency adjustment range of the compressor.

[0077] Based on the above steps S100 to S400, according to the technical solution of the present invention, in dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but prioritizes adjusting the opening degree of the throttling device. Specifically, in this embodiment of the invention, the current temperature of the indoor heat exchanger, the opening adjustment range of the throttling device, and the current opening are first obtained. Then, based on the current temperature, the target temperature range, and the current opening, a first target opening of the throttling device is determined. If the first target opening is within the opening adjustment range, it means that this embodiment of the invention only needs to adjust the opening of the throttling device to meet the temperature regulation of the indoor heat exchanger. In this case, the opening of the throttling device will be adjusted to the first target opening without adjusting the operating frequency of the compressor. If the first target opening is outside the opening adjustment range, it means that this embodiment of the invention needs to adjust not only the opening of the throttling device but also the speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger. In this case, this embodiment of the invention will prioritize adjusting the opening of the throttling device to the second target opening, and will also appropriately adjust the speed of the indoor fan to the target speed and / or adjust the operating frequency of the compressor to the target operating frequency. Therefore, in this embodiment of the invention, when it is necessary to increase the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of reduced dehumidification effect caused by directly reducing the frequency of the compressor. In addition, in this embodiment of the invention, when it is necessary to decrease the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0078] It is worth noting that the steps in S400 above, such as adjusting the indoor fan speed to the target speed and / or adjusting the compressor operating frequency to the target operating frequency, can specifically include: Figure 4 or Figure 5 The two implementation scenarios are as follows:

[0079] like Figure 4 As shown, Figure 4 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. When the indoor fan speed is adjusted to a target speed and the compressor operating frequency is adjusted to a target operating frequency, the adjustment of the indoor fan speed to the target speed and the compressor operating frequency in step S400 above includes, but is not limited to, steps S410 and S420.

[0080] Step S410: When the second target opening degree is greater than the current opening degree, obtain the speed adjustment range of the indoor fan;

[0081] Step S420: Adjust the speed of the indoor fan to the upper limit of the speed adjustment range, and then adjust the operating frequency of the compressor to the target operating frequency.

[0082] Specifically, if, in this embodiment of the invention, increasing the opening of the throttling device (e.g., adjusting the opening to the upper limit of the opening range) still fails to bring the temperature of the indoor heat exchanger into the target temperature range, then this embodiment of the invention will first adjust the speed of the indoor fan to the upper limit of the speed adjustment range. If increasing the speed of the indoor fan to the maximum speed still fails to bring the temperature of the indoor heat exchanger into the target temperature range, then this embodiment of the invention will adjust the operating frequency of the compressor to bring the temperature of the indoor heat exchanger into the target temperature range.

[0083] Therefore, according to the technical solution of the present invention, in dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but first adjusts the opening of the throttling device, then adjusts the speed of the indoor fan, and finally adjusts the operating frequency of the compressor. Therefore, the present invention can avoid the problem of deterioration of dehumidification effect caused by directly reducing the frequency of the compressor.

[0084] like Figure 5 As shown, Figure 5 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. When the indoor fan speed is adjusted to a target speed and the compressor operating frequency is adjusted to a target operating frequency, the adjustment of the indoor fan speed to the target speed and the compressor operating frequency in step S400 above includes, but is not limited to, steps S430 and S440.

[0085] Step S430: When the second target opening degree is less than the current opening degree, obtain the speed adjustment range of the indoor fan;

[0086] Step S440: Adjust the speed of the indoor fan to the lower limit of the speed adjustment range, and then adjust the operating frequency of the compressor to the target operating frequency.

[0087] Specifically, if, in this embodiment of the invention, reducing the opening of the throttling device (e.g., adjusting the opening to the lower limit of the opening range) still fails to bring the temperature of the indoor heat exchanger into the target temperature range, then this embodiment of the invention will first adjust the speed of the indoor fan to the lower limit of the speed adjustment range. If reducing the speed of the indoor fan to the minimum speed still fails to bring the temperature of the indoor heat exchanger into the target temperature range, then this embodiment of the invention will adjust the operating frequency of the compressor to bring the temperature of the indoor heat exchanger into the target temperature range.

[0088] Therefore, according to the technical solution of the present invention, in dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but first adjusts the opening of the throttling device, then adjusts the speed of the indoor fan, and finally adjusts the operating frequency of the compressor. Therefore, the present invention can avoid the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0089] In addition, such as Figure 6 As shown, Figure 6 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. The target temperature range is set with a lower limit value; regarding step S200 above, determining the first target opening degree of the throttling device based on the current temperature, the target temperature range, and the current opening degree includes, but is not limited to, steps S210 and S220.

[0090] Step S210: When the current temperature is less than or equal to the lower limit of the temperature range, determine the amount of increase in the opening of the throttling device;

[0091] Step S220: Determine the first target opening of the throttling device based on the current opening and the amount of opening increase.

[0092] Specifically, the target temperature range of this embodiment of the invention is set with a lower limit value. When the current temperature of the indoor heat exchanger is less than or equal to the lower limit value of the temperature range, it indicates that the current dehumidification effect is poor. For example, if the indoor heat exchanger frosts and the dehumidification effect becomes poor, the air conditioner needs to be adjusted.

[0093] It should be noted that when the current temperature of the indoor heat exchanger is less than or equal to the lower limit of the temperature range, the embodiment of the present invention will calculate the opening increase based on the current temperature and the target temperature range. If the throttling device can make the temperature of the indoor heat exchanger fall into the target temperature range after adjusting the opening increase, the dehumidification effect of the air conditioner can be improved.

[0094] In this embodiment of the invention, after calculating the increase in opening based on the current temperature and the target temperature range, the current opening and the increase in opening are further calculated to obtain the first target opening that the throttling device needs to achieve.

[0095] In addition, such as Figure 7 As shown, Figure 7 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. Based on the above... Figure 6 The steps shown above, regarding adjusting the opening of the throttling device to the second target opening in step S400, include, but are not limited to, step S450.

[0096] Step S450: Adjust the opening degree of the throttling device to the upper limit of the opening degree range.

[0097] Specifically, when the current temperature of the indoor heat exchanger is less than or equal to the lower limit of the temperature range, the second target opening degree in step S400 above corresponds to the upper limit of the opening degree range.

[0098] In addition, such as Figure 8 As shown, Figure 8 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. The target temperature range is set with an upper limit value; regarding step S200 above, determining the first target opening degree of the throttling device based on the current temperature, the target temperature range, and the current opening degree includes, but is not limited to, steps S230 and S240.

[0099] Step S230: When the current temperature is greater than the upper limit of the temperature range, determine the amount of reduction in the opening of the throttling device;

[0100] Step S240: Determine the first target opening of the throttling device based on the current opening and the amount of opening reduction.

[0101] Specifically, the target temperature range of this embodiment of the invention is set with an upper limit value. When the current temperature of the indoor heat exchanger is greater than the upper limit value of the temperature range, it indicates that the current dehumidification effect is poor. For example, if the temperature of the indoor heat exchanger is close to the dew point temperature, resulting in a poor dehumidification effect, the air conditioner needs to be adjusted.

[0102] It should be noted that when the current temperature of the indoor heat exchanger is greater than the upper limit of the temperature range, the embodiment of the present invention will calculate the reduction in opening based on the current temperature and the target temperature range. If the throttling device can reduce the temperature of the indoor heat exchanger to within the target temperature range after adjusting the reduction in opening, the dehumidification effect of the air conditioner can be improved.

[0103] In this embodiment of the invention, after calculating the reduction in opening based on the current temperature and the target temperature range, the current opening and the reduction in opening are further calculated to obtain the first target opening that the throttling device needs to achieve.

[0104] In addition, such as Figure 9 As shown, Figure 9 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. Based on the above... Figure 8 The steps shown above, regarding adjusting the opening of the throttling device to the second target opening in step S400, include, but are not limited to, step S460.

[0105] Step S460: Adjust the opening degree of the throttling device to the lower limit of the opening degree range.

[0106] Specifically, when the current temperature of the indoor heat exchanger is greater than the upper limit of the temperature range, the second target opening degree in step S400 above corresponds to the lower limit of the opening degree range.

[0107] In addition, such as Figure 10 As shown, Figure 10 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention. Regarding the above... Figure 8 The upper limit of the temperature range can be obtained through, but is not limited to, steps S510 and S520.

[0108] Step S510: Obtain the air temperature and humidity at the air inlet of the indoor heat exchanger, and determine the dew point temperature based on the air temperature and humidity.

[0109] Step S520: Perform difference processing on the dew point temperature and the preset deviation value to obtain the upper limit value of the temperature range.

[0110] Specifically, the upper limit of the temperature range mentioned above refers to a temperature value close to the dew point temperature. When the temperature of the indoor heat exchanger is close to the dew point temperature, its dehumidification effect will deteriorate. Therefore, this embodiment of the invention obtains the dew point temperature and a preset deviation value, and then performs difference processing on the dew point temperature and the preset deviation value to obtain the upper limit of the temperature range. This upper limit of the temperature range can be slightly less than the dew point temperature or greater than the dew point temperature. If the current temperature of the indoor heat exchanger is greater than this upper limit of the temperature range, it indicates that the dehumidification effect will be poor at this time.

[0111] The aforementioned preset deviation value can be set manually.

[0112] In addition, such as Figure 11 As shown, Figure 11This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. Regarding step S200 above, determining the first target opening degree of the throttling device based on the current temperature, the target temperature range, and the current opening degree includes, but is not limited to, step S250.

[0113] Step S250: If the current temperature is within the target temperature range, determine the current opening degree as the first target opening degree of the throttling device.

[0114] Specifically, when the current temperature of the indoor heat exchanger is within the target temperature range, it indicates that the current dehumidification effect is good, and there is no need to adjust the air conditioner.

[0115] In addition, such as Figure 12 As shown, Figure 12 This is a flowchart of an air conditioner control method provided in another embodiment of the present invention. Regarding step S200 above, determining the first target opening degree of the throttling device based on the current temperature, the target temperature range, and the current opening degree includes, but is not limited to, steps S610 and S620.

[0116] Step S610: Obtain the air temperature and humidity at the air inlet of the indoor heat exchanger, and determine the dew point temperature based on the air temperature and humidity.

[0117] Step S620: When the dew point temperature is greater than the first preset temperature and the current temperature is less than the dew point temperature, determine the first target opening degree of the throttling device based on the current temperature, the target temperature range and the current opening degree.

[0118] Specifically, the first preset temperature mentioned above can be zero degrees or a low temperature close to zero degrees. Therefore, in this embodiment of the invention, steps S200, S300 and S400 are performed in a low temperature environment and when the current temperature is less than the dew point temperature.

[0119] In addition, such as Figure 13 As shown, Figure 13 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. The control method of this embodiment of the present invention also includes, but is not limited to, step S700.

[0120] Step S700: When the dew point temperature is greater than the first preset temperature and the current temperature is greater than or equal to the dew point temperature, reduce the opening of the throttling device and / or increase the operating frequency of the compressor.

[0121] Specifically, in a low-temperature environment where the current temperature is greater than or equal to the dew point temperature, it indicates that the current temperature is high. In this case, it is necessary to reduce the opening of the throttling device, increase the operating frequency of the compressor, or simultaneously reduce the opening of the throttling device and increase the operating frequency of the compressor.

[0122] In addition, such as Figure 14 As shown, Figure 14 This is a flowchart of a control method for an air conditioner provided in another embodiment of the present invention. The control method of this embodiment of the present invention also includes, but is not limited to, step S800.

[0123] Step S800: When the dew point temperature is less than or equal to the first preset temperature, defrost the indoor heat exchanger according to the current temperature.

[0124] Specifically, in low-temperature environments, such as when the dew point temperature is zero degrees Celsius or below, in order to achieve a dehumidification effect, the temperature of the indoor heat exchanger in this embodiment of the invention needs to be lower than the dew point temperature, that is, the temperature of the indoor heat exchanger needs to be below zero degrees Celsius. At this time, the indoor heat exchanger will experience frosting. Therefore, in order to solve the frosting problem, this embodiment of the invention will perform defrosting treatment on the indoor heat exchanger when there is a lot of frosting, such as when the temperature is low, and continuously cycle the frosting and defrosting process.

[0125] Regarding the defrosting process described above, it can be performed by turning off the compressor and starting the indoor fan, or by switching to the heating mode. This embodiment of the invention does not limit the defrosting method.

[0126] Based on the control methods of the air conditioner described in the above embodiments, the overall embodiments of the control methods of the air conditioner of the present invention are presented below.

[0127] like Figure 15 As shown, Figure 15 This is an overall flowchart of the control method for an air conditioner provided in one embodiment of the present invention. The overall control of this embodiment is as follows: When the dew point temperature is lower than a first constant, the air conditioner operates directly under a specific low-temperature condition, such as continuously cycling through the frosting and defrosting process; when the dew point temperature is higher than the first constant and lower than the evaporator mid-temperature, the opening of the electronic expansion valve is directly reduced and the compressor frequency is increased to reduce the evaporator mid-temperature; when the dew point temperature is higher than the first constant and higher than the evaporator mid-temperature, and the evaporator mid-temperature is lower than a second constant, the opening of the electronic expansion valve is adjusted first; if this cannot be achieved, the compressor frequency is reduced and the indoor fan speed is increased to increase the evaporator mid-temperature; when the dew point temperature is higher than the first constant and higher than the evaporator mid-temperature, and the evaporator mid-temperature is higher than the second constant, and the difference between the dew point temperature and the evaporator temperature is lower than a third constant, the opening of the electronic expansion valve is adjusted first; if this cannot be achieved, the compressor frequency is increased and the indoor fan speed is reduced to increase the difference.

[0128] Specifically, Figure 15 The overall process includes the following steps:

[0129] The air conditioner is turned on and operates in the preset state; the inlet air dry-bulb temperature T is detected.db Calculate the relative humidity RH, the temperature at the center of the evaporator T2, and the dew point temperature T. d .

[0130] If T d If C1 is ≤, then operate directly under low-temperature conditions such as defrosting; if T d If > C1, then compare T2 with T. d Size.

[0131] If T2≥T d If the electronic expansion valve opening ΔK1 is reduced, the compressor frequency Δfr1 is increased; after running time t1, the system returns to monitor the inlet air dry-bulb temperature T. db Relative humidity RH, temperature in the middle of the evaporator T2.

[0132] If T2 < T d Then, we can further determine the relative sizes of T2 and C2.

[0133] If T2≤C2, then first determine whether the opening degree of the electronic expansion valve is the maximum allowable value K. max If it is not at maximum opening, increase the electronic expansion valve opening ΔK2, and after running for t2, return to detecting the inlet air dry-bulb temperature T. db The relative humidity (RH) and the evaporator mid-section temperature (T2) are monitored. If the evaporator is at its maximum opening, the compressor frequency (Δfr2) is reduced and the fan speed (ΔN1) is increased. After running for t3, the system returns to monitoring the inlet air dry-bulb temperature (T). db Relative humidity RH, temperature at the center of the evaporator T2;

[0134] If T2 > C2, then compare T. d The difference between T2 and C2; if T d If T2≥C3, then the air conditioner will remain in its predetermined state; if T d If T2 < C3, further determine whether the opening degree of the electronic expansion valve is the minimum allowable value K. min If it is not at the minimum opening, reduce the electronic expansion valve opening ΔK3; after running time t4, return to detecting the inlet air dry-bulb temperature T. db The relative humidity (RH) and the evaporator mid-section temperature (T2) are monitored. If the evaporator is at its minimum opening, the compressor frequency (Δfr3) is reduced and the fan speed (ΔN2) is increased. After running for t5, the system returns to monitoring the inlet air dry-bulb temperature (T). db Relative humidity RH, temperature in the middle of the evaporator T2.

[0135] Among them, T db T2 represents the dry-bulb temperature of the inlet air; T2 represents the temperature at the middle of the evaporator, indicating the temperature of the refrigerant at the midpoint of the evaporator manifold; T dCharacterizing air dew point temperature; RH characterizing inlet air relative humidity; ΔK characterizing the amount by which the electronic expansion valve opening increases or decreases; K max Characterizes the maximum allowable opening degree of the electronic expansion valve; K min Δfr represents the minimum allowable opening of the electronic expansion valve; Δfr represents the amount by which the compressor frequency increases or decreases; ΔN represents the amount by which the indoor fan speed increases or decreases; C1 is the first constant used to determine whether the air dew point temperature is too low; C2 is the second constant used to determine whether the temperature in the middle of the evaporator is too low; C3 is the third constant used to determine whether the air dew point temperature and the temperature in the middle of the evaporator meet a certain difference; t1, t2, t3, t4 and t5 are time constants.

[0136] Based on the above-described control method for air conditioners, the following are various embodiments of the controller, air conditioner, and computer-readable storage medium of the present invention.

[0137] In addition, one embodiment of the present invention provides a controller, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor.

[0138] The processor and memory can be connected via a bus or other means.

[0139] It should be noted that the controller in this embodiment may include, for example: Figure 1 The processor and memory in the illustrated embodiment belong to the same inventive concept, and therefore have the same implementation principle and beneficial effects, which will not be described in detail here.

[0140] The non-transient software program and instructions required to implement the air conditioner control method of the above embodiments are stored in the memory. When executed by the processor, the air conditioner control method of the above embodiments is executed.

[0141] According to the technical solution of the present invention, in dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but prioritizes adjusting the opening degree of the throttling device. Specifically, the present invention first obtains the current temperature of the indoor heat exchanger, the opening degree adjustment range of the throttling device, and the current opening degree. Then, based on the current temperature, the target temperature range, and the current opening degree, it determines the first target opening degree of the throttling device. If the first target opening degree is within the opening degree adjustment range, it indicates that the present invention only needs to adjust the opening degree of the throttling device to meet the temperature regulation of the indoor heat exchanger. In this case, the present invention will adjust the opening degree of the throttling device to the first target opening degree without adjusting the operating frequency of the compressor. If the first target opening degree is outside the opening degree adjustment range, it indicates that the present invention, in addition to adjusting the opening degree of the throttling device, also needs to adjust the speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger. In this case, the present invention will prioritize adjusting the opening degree of the throttling device to the second target opening degree, and will also appropriately adjust the speed of the indoor fan to the target speed and / or adjust the operating frequency of the compressor to the target operating frequency. Therefore, in this embodiment of the invention, when it is necessary to increase the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of reduced dehumidification effect caused by directly reducing the frequency of the compressor. In addition, in this embodiment of the invention, when it is necessary to decrease the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0142] It is worth noting that since the controller of this embodiment can execute the air conditioner control method of the above embodiments, the specific implementation method and technical effects of the controller of this embodiment can refer to the specific implementation method and technical effects of the air conditioner control method of any of the above embodiments.

[0143] Furthermore, one embodiment of the present invention also provides an air conditioner that includes the aforementioned controller.

[0144] According to the technical solution of the present invention, in dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but prioritizes adjusting the opening degree of the throttling device. Specifically, the present invention first obtains the current temperature of the indoor heat exchanger, the opening degree adjustment range of the throttling device, and the current opening degree. Then, based on the current temperature, the target temperature range, and the current opening degree, it determines the first target opening degree of the throttling device. If the first target opening degree is within the opening degree adjustment range, it indicates that the present invention only needs to adjust the opening degree of the throttling device to meet the temperature regulation of the indoor heat exchanger. In this case, the present invention will adjust the opening degree of the throttling device to the first target opening degree without adjusting the operating frequency of the compressor. If the first target opening degree is outside the opening degree adjustment range, it indicates that the present invention, in addition to adjusting the opening degree of the throttling device, also needs to adjust the speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger. In this case, the present invention will prioritize adjusting the opening degree of the throttling device to the second target opening degree, and will also appropriately adjust the speed of the indoor fan to the target speed and / or adjust the operating frequency of the compressor to the target operating frequency. Therefore, in this embodiment of the invention, when it is necessary to increase the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of reduced dehumidification effect caused by directly reducing the frequency of the compressor. In addition, in this embodiment of the invention, when it is necessary to decrease the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0145] It is worth noting that, since the air conditioner of this embodiment has the controller of the above embodiment, and the controller of the above embodiment can execute the control method of the air conditioner of the above embodiment, the specific implementation method and technical effect of the air conditioner of this embodiment can refer to the specific implementation method and technical effect of the control method of the air conditioner of any of the above embodiments.

[0146] Furthermore, one embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the aforementioned air conditioner control method. Exemplarily, the above-described method is executed... Figures 3 to 15 The methods and steps in the text.

[0147] According to the technical solution of the present invention, in dehumidification mode, in order to achieve temperature regulation of the indoor heat exchanger, the present invention does not directly adjust the operating frequency of the compressor, but prioritizes adjusting the opening degree of the throttling device. Specifically, the present invention first obtains the current temperature of the indoor heat exchanger, the opening degree adjustment range of the throttling device, and the current opening degree. Then, based on the current temperature, the target temperature range, and the current opening degree, it determines the first target opening degree of the throttling device. If the first target opening degree is within the opening degree adjustment range, it indicates that the present invention only needs to adjust the opening degree of the throttling device to meet the temperature regulation of the indoor heat exchanger. In this case, the present invention will adjust the opening degree of the throttling device to the first target opening degree without adjusting the operating frequency of the compressor. If the first target opening degree is outside the opening degree adjustment range, it indicates that the present invention, in addition to adjusting the opening degree of the throttling device, also needs to adjust the speed of the indoor fan and / or the operating frequency of the compressor to meet the temperature regulation of the indoor heat exchanger. In this case, the present invention will prioritize adjusting the opening degree of the throttling device to the second target opening degree, and will also appropriately adjust the speed of the indoor fan to the target speed and / or adjust the operating frequency of the compressor to the target operating frequency. Therefore, in this embodiment of the invention, when it is necessary to increase the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of reduced dehumidification effect caused by directly reducing the frequency of the compressor. In addition, in this embodiment of the invention, when it is necessary to decrease the temperature of the indoor heat exchanger in dehumidification mode, the opening degree of the throttling device can be adjusted first. If this is insufficient, the speed of the indoor fan and / or the frequency of the compressor can be adjusted. This avoids the problem of increased energy consumption caused by directly increasing the frequency of the compressor.

[0148] It is worth noting that, since the computer-readable storage medium of the present invention can implement the air conditioner control method of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of the present invention can be referred to the specific implementation and technical effects of the air conditioner control method of any of the above embodiments.

[0149] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0150] The above provides a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner is equipped with a throttling device; the method includes: In dehumidification mode, the current temperature and target temperature range of the indoor heat exchanger, the opening adjustment range of the throttling device, and the current opening are obtained; The first target opening degree of the throttling device is determined based on the current temperature, the target temperature range, and the current opening degree; When the first target opening is within the opening adjustment range, the opening of the throttling device is adjusted to the first target opening; When the first target opening degree is outside the opening degree adjustment range, the second target opening degree of the throttling device is determined, and the target speed of the indoor fan and / or the target operating frequency of the compressor are determined. The opening degree of the throttling device is adjusted to the second target opening degree, and the speed of the indoor fan is adjusted to the target speed and / or the operating frequency of the compressor is adjusted to the target operating frequency, wherein the second target opening degree is within the opening degree adjustment range. Wherein, adjusting the opening degree of the throttling device to the second target opening degree includes one of the following: adjusting the opening degree of the throttling device to the upper limit of the opening degree adjustment range, or adjusting the opening degree of the throttling device to the lower limit of the opening degree adjustment range; Furthermore, when adjusting the speed of the indoor fan to the target speed and adjusting the operating frequency of the compressor to the target operating frequency, adjusting the speed of the indoor fan to the target speed and adjusting the operating frequency of the compressor to the target operating frequency includes one of the following: When the second target opening degree is greater than the current opening degree, the speed adjustment range of the indoor fan is obtained; the speed of the indoor fan is adjusted to the upper limit of the speed adjustment range, and then the operating frequency of the compressor is adjusted to the target operating frequency. When the second target opening degree is less than the current opening degree, the speed adjustment range of the indoor fan is obtained; the speed of the indoor fan is adjusted to the lower limit of the speed adjustment range, and then the operating frequency of the compressor is adjusted to the target operating frequency.

2. The method according to claim 1, characterized in that, The target temperature range is provided with a lower limit; determining the first target opening of the throttling device based on the current temperature, the target temperature range, and the current opening includes: When the current temperature is less than or equal to the lower limit of the temperature range, the amount of increase in the opening of the throttling device is determined; The first target opening of the throttling device is determined based on the current opening and the amount of increase in the opening.

3. The method according to claim 1, characterized in that, The target temperature range is set with an upper limit value; determining the first target opening of the throttling device based on the current temperature, the target temperature range, and the current opening includes: When the current temperature is greater than the upper limit of the temperature range, the amount of reduction in the opening of the throttling device is determined; The first target opening of the throttling device is determined based on the current opening and the amount of reduction in opening.

4. The control method according to claim 3, characterized in that, The upper limit of the temperature range is obtained through the following steps: The air temperature and humidity at the inlet of the indoor heat exchanger are obtained, and the dew point temperature is determined based on the air temperature and humidity. The upper limit of the temperature range is obtained by performing difference processing on the dew point temperature and the preset deviation value.

5. The method according to claim 1, characterized in that, Determining the first target opening of the throttling device based on the current temperature, the target temperature range, and the current opening includes: If the current temperature is within the target temperature range, the current opening degree is determined as the first target opening degree of the throttling device.

6. The method according to any one of claims 1 to 3 and 5, characterized in that, Before the step of determining the first target opening of the throttling device based on the current temperature, the target temperature range, and the current opening, the following steps are included: The air temperature and humidity at the inlet of the indoor heat exchanger are obtained, and the dew point temperature is determined based on the air temperature and humidity. When the dew point temperature is greater than the first preset temperature and the current temperature is less than the dew point temperature, the first target opening degree of the throttling device is determined based on the current temperature, the target temperature range, and the current opening degree.

7. The method according to claim 6, characterized in that, Also includes: If the dew point temperature is greater than the first preset temperature and the current temperature is greater than or equal to the dew point temperature, the opening degree of the throttling device is reduced and / or the operating frequency of the compressor is increased.

8. The method according to claim 6, characterized in that, Also includes: If the dew point temperature is less than or equal to the first preset temperature, the indoor heat exchanger is defrosted according to the current temperature.

9. A controller, characterized in that, include: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the control method for an air conditioner as described in any one of claims 1 to 8.

10. An air conditioner, characterized in that: Includes the controller as described in claim 9.

11. A computer-readable storage medium, characterized in that: The device stores computer-executable instructions for performing the control method of the air conditioner as described in any one of claims 1 to 8.

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