Air conditioner constant temperature dehumidification method, system, storage medium and air conditioner

Abstract

The present invention provides a constant-temperature dehumidification method, system, storage medium, and air conditioner for an air conditioner, comprising: opening a target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air conditioner compressor, indoor unit air inlet temperature information, and indoor unit air outlet temperature information; and regulating the target opening of the target electronic expansion valve based on the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to maintain a constant difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information. While achieving a dehumidification effect, the present invention ensures that the indoor unit air inlet temperature and air outlet temperature remain constant, effectively achieving a constant-temperature dehumidification effect indoors, avoiding the technical drawback of prior art techniques that easily causes user discomfort during the dehumidification process, and providing a better user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a constant temperature dehumidification method, system, storage medium and air conditioner for an air conditioner. Background Art

[0002] With the continuous development of smart home technology, in order to meet users' growing experience needs, air conditioners are designed to be more energy-saving and environmentally friendly, and their functions are more diversified.

[0003] Existing air conditioners generally have a dehumidification function, which can effectively meet the needs of users in areas with high humidity. However, in the existing technology, when the air conditioner is dehumidifying, the evaporator of the indoor unit is in a low temperature state, and the air outlet of the indoor unit blows cold air, which rapidly lowers the indoor temperature. This can easily cause discomfort to the user and lead to a poor user experience. Summary of the Invention

[0004] The present invention provides a constant temperature dehumidification method, system, storage medium and air conditioner for an air conditioner, which are used to solve the defect in the prior art that dehumidification of the air conditioner easily causes discomfort to the user's body surface, resulting in a poor user experience.

[0005] The present invention provides a constant temperature dehumidification method for an air conditioner, comprising:

[0006] Opening a target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information;

[0007] The target opening of the target electronic expansion valve is regulated according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0008] According to the present invention, a method for constant temperature dehumidification of an air conditioner is provided, wherein the method for determining the target opening degree based on the frequency of the air conditioner compressor, the temperature information of the indoor unit air inlet, and the temperature information of the indoor unit air outlet comprises:

[0009] calculating a difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information, and calculating a target product based on the difference, the frequency of the air conditioner compressor, and a preset correction coefficient;

[0010] The target opening of the target electronic expansion valve is obtained according to the target product and a preset constant.

[0011] According to a constant temperature dehumidification method for an air conditioner provided by the present invention, a target opening of the target electronic expansion valve is regulated based on the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, comprising:

[0012] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is the same as the indoor unit air outlet temperature information, adjusting the target electronic expansion valve opening from the target opening to the opening corresponding to the preset constant, and maintaining the target electronic expansion valve opening at the opening corresponding to the preset constant;

[0013] or,

[0014] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is greater than the indoor unit air outlet temperature information, increasing the target electronic expansion valve opening degree based on the target opening degree according to a first target rate;

[0015] or,

[0016] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is less than the indoor unit air outlet temperature information, the target electronic expansion valve opening is reduced based on the target opening according to a second target rate.

[0017] According to a constant temperature dehumidification method for an air conditioner provided by the present invention, before opening the target electronic expansion valve and adjusting the opening degree of the target electronic expansion valve to the target opening degree, the method further includes:

[0018] When it is detected that the air conditioner is not in the constant temperature dehumidification mode, the current preset mode is maintained and the indoor temperature information and indoor humidity information are obtained;

[0019] When the indoor temperature information is lower than a target temperature threshold and the indoor humidity information is higher than a first humidity threshold, the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information are acquired.

[0020] According to a constant temperature dehumidification method for an air conditioner provided by the present invention, a target opening of the target electronic expansion valve is regulated based on the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, comprising:

[0021] When the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is equal to a target threshold, adjusting the target electronic expansion valve opening from the target opening to an opening corresponding to the preset constant, and maintaining the target electronic expansion valve opening at the opening corresponding to the preset constant;

[0022] or,

[0023] When the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is greater than the target threshold, increasing the target electronic expansion valve opening at a first target rate based on the target opening;

[0024] or,

[0025] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is less than the target threshold, the opening of the target electronic expansion valve is reduced based on the target opening at a second target rate.

[0026] According to a constant temperature dehumidification method for an air conditioner provided by the present invention, after adjusting the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the method further includes:

[0027] When detecting that the indoor humidity information is less than a second humidity threshold, closing the target electronic expansion valve;

[0028] The operating mode of the air conditioner is switched back to the current preset mode.

[0029] The present invention also provides an air conditioner constant temperature dehumidification system, comprising:

[0030] an opening module, configured to open a target electronic expansion valve and adjust the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information;

[0031] The control module is used to control the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, so as to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0032] The present invention also provides an air conditioner, comprising an indoor unit and an outdoor unit, the outdoor unit comprising a condenser, an air-conditioning compressor, a control device, and a target electronic expansion valve, the indoor unit comprising an evaporator, a capillary tube, a temperature sensor, and a humidity sensor, the target electronic expansion valve being disposed on a communication pipe between an exhaust port of the air-conditioning compressor and an air inlet of the capillary tube, the air-conditioning compressor, the target electronic expansion valve, the temperature sensor, and the humidity sensor being electrically connected to the control device, respectively;

[0033] The control device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the processor executes the program, any of the above-mentioned constant temperature dehumidification methods for the air conditioner is implemented.

[0034] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the constant temperature dehumidification method for an air conditioner as described in any one of the above is implemented.

[0035] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the constant temperature dehumidification method for an air conditioner as described above is implemented.

[0036] The present invention provides an air conditioner constant temperature dehumidification method, system, storage medium and air conditioner. By adding a target electronic expansion valve, the target electronic expansion valve can control the flow rate of high-temperature gaseous refrigerant in the capillary tube of the indoor unit. When the user turns on the dehumidification function of the air conditioner, the target opening of the target electronic expansion valve is calculated by obtaining the frequency of the air conditioner compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information; the target electronic expansion valve is turned on and the opening of the target electronic expansion valve is adjusted to the target opening, and then the target opening of the target electronic expansion valve is effectively regulated according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information. , so that the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit can be dynamically adjusted according to the changes in the indoor unit air inlet temperature and the indoor unit air outlet temperature, and the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information can be controlled to be constant. In this way, while achieving the dehumidification effect, the heat released by the flow rate of the high-temperature gaseous refrigerant in the capillary tube is effectively controlled, and the temperature compensation of the blowing air flow after dehumidification is accurately performed to ensure that the air inlet temperature and the air outlet temperature of the indoor unit remain constant, which can effectively achieve the effect of indoor constant temperature dehumidification, avoid the technical defects of the existing technology that easily cause user body surface discomfort during the dehumidification process, and provide a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 1 is a schematic diagram of the system structure of the air conditioner provided by the present invention;

[0039] Figure 2 It is a schematic flow chart of the constant temperature dehumidification method for an air conditioner provided by the present invention;

[0040] Figure 3 It is a structural diagram of the constant temperature dehumidification system of the air conditioner provided by the present invention. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0042] The following combination Figure 1-Figure 3 The present invention describes the constant temperature dehumidification method, system, storage medium and air conditioner of the air conditioner.

[0043] Figure 1 This is a schematic diagram of the system structure of the air conditioner provided by the present invention. Figure 1 As shown, the air conditioner includes an indoor unit and an outdoor unit;

[0044] The outdoor unit includes a condenser, an air-conditioning compressor, a control device, and a target electronic expansion valve; the indoor unit includes an evaporator, a capillary tube, a temperature sensor, and a humidity sensor; the target electronic expansion valve is arranged on a connecting pipe between the exhaust port of the air-conditioning compressor and the air inlet of the capillary tube; the air-conditioning compressor, the target electronic expansion valve, the temperature sensor, and the humidity sensor are electrically connected to the control device, respectively;

[0045] The control device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the processor executes the program, it can execute the constant temperature dehumidification method for an air conditioner based on compressor frequency control provided by the present invention.

[0046] In this embodiment, the temperature sensor can be used to detect the air inlet temperature information and the air outlet temperature information of the indoor unit, as well as to detect the indoor ambient temperature, and send the detected temperature information to the control device; the humidity sensor can be used to detect the indoor ambient humidity, and send the detected indoor ambient humidity information to the control device.

[0047] In this embodiment, while dehumidifying the room, the air conditioner draws high-temperature gaseous refrigerant through the exhaust port of the air conditioner compressor. The refrigerant passes through the condenser, the throttling device, the evaporator, and then returns to the air conditioner compressor, repeating the cycle. By adjusting the target electronic expansion valve and placing a capillary tube below the evaporator, the capillary tube transfers the high-temperature refrigerant temperature to the room.

[0048] The indoor unit's air inlet first draws in air, which then absorbs heat through the evaporator. The air then becomes liquefied when cooled and becomes condensed water that is discharged from the indoor unit, achieving the dehumidification effect. While the evaporator is dehumidifying and cooling, the cold air passes through the high-temperature capillary tube, absorbs the heat of the capillary tube, and heats up the cold air, achieving the same temperature at the air inlet and outlet of the air conditioner indoor unit, thereby not lowering the indoor temperature and achieving the adjustment of indoor constant temperature dehumidification and other modes.

[0049] Figure 2 FIG. 1 is a flow chart of the constant temperature dehumidification method for an air conditioner provided by the present invention, as shown in FIG. Figure 2 As shown, including:

[0050] Step 110: Open the target electronic expansion valve and adjust the opening of the target electronic expansion valve to a target opening; wherein the target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information;

[0051] Specifically, in this embodiment of the present invention, the target electronic expansion valve refers to an electronic expansion valve pre-installed in the connecting pipe between the air conditioner compressor exhaust port and the capillary tube air inlet. By adjusting the opening of the target electronic expansion valve, the flow rate of high-temperature gaseous refrigerant in the indoor unit's capillary tube can be controlled, thereby controlling the heat released by the capillary tube into the air, effectively heating the cold air at the evaporator outlet and achieving temperature compensation.

[0052] In the embodiment of the present invention, the target opening refers to the target opening value of the electronic expansion valve that is calculated by detecting the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information when the air conditioner is running.

[0053] In this embodiment, the control device can obtain the operating frequency of the air-conditioning compressor, and obtain the indoor unit air inlet temperature information and the indoor unit air outlet temperature information through the temperature sensor and humidity sensor of the indoor unit. Then, based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information and the preset calculation method, the target opening of the target electronic expansion valve can be obtained.

[0054] It should be noted that, in some embodiments, the target electronic expansion valve opening range used in the present invention is 0 to 480 steps, that is, the opening adjustment range of P1 is 0 to 480 steps.

[0055] In this embodiment, by adopting a target electronic expansion valve with a larger opening range, the opening of the target electronic expansion valve can be regulated over a large range during the dehumidification process of the air conditioner, and the heat compensation of the indoor unit capillary to the gas at the evaporator outlet can be more accurately controlled, which is conducive to more effectively achieving the constant temperature dehumidification effect of the air conditioner.

[0056] In some embodiments, a method for determining a target opening of a target electronic expansion valve based on the frequency of an air conditioner compressor, indoor unit air inlet temperature information, and indoor unit air outlet temperature information includes:

[0057] Calculating a difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information, and calculating a target product based on the difference, the frequency of the air conditioner compressor, and a preset correction coefficient;

[0058] The target opening of the target electronic expansion valve is obtained according to the target product and the preset constant.

[0059] Specifically, in an embodiment of the present invention, the preset correction coefficient refers to a pre-set calculation coefficient, which can be used for calculation processing between parameters of different units, to correct the calculation results, and to ensure that the target opening of the target electronic expansion valve is within the set opening adjustment range (such as 0 to 480 steps). Its specific value can be determined based on the actual matching number and energy efficiency level of the air conditioner, and the present invention does not make specific limitations on this.

[0060] The preset constant described in the embodiment of the present invention refers to a pre-set calculation constant used to calculate the target electronic expansion valve opening.

[0061] Optionally, in an embodiment of the present invention, the preset constant may be set to 240.

[0062] More specifically, in the embodiment of the present invention, different calculation methods for the target opening of the target electronic expansion valve are determined for different operating scenarios of the air conditioner.

[0063] In this embodiment, when the air conditioner is in constant temperature dehumidification mode, the target opening of the target electronic expansion valve can be determined according to the first formula P1 = A(T1-T2)H+240, where H represents the frequency of the air conditioner compressor, T1 represents the indoor unit air inlet temperature information, T2 represents the indoor unit air outlet temperature information, and A represents the preset correction coefficient.

[0064] In this embodiment, when the air conditioner is not in the constant temperature dehumidification mode, the target opening of the target electronic expansion valve can also be determined according to the second formula P2 = A(T1-T2-8)H+240, where H represents the frequency of the air conditioner compressor, T1 represents the indoor unit air inlet temperature information, T2 represents the indoor unit air outlet temperature information, and A represents the preset correction coefficient.

[0065] Furthermore, after obtaining the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the difference between the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2 can be calculated according to the above formula, and based on the difference, the frequency of the air-conditioning compressor and the preset correction coefficient, the target product is calculated, that is, the product value of A(T1-T2)H or the product value of A(T1-T2-8)H is obtained; and then the target opening of the target electronic expansion valve is calculated based on the sum of the target product and the preset constant 240.

[0066] The method of the embodiment of the present invention determines the opening of the target electronic expansion valve based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information by combining the influence of the operating frequency characteristics of the air-conditioning compressor and the indoor unit inlet temperature on the dehumidification effect of the air conditioner, thereby realizing the selection and effective regulation of the target electronic expansion valve opening, controlling the heat released by the flow of high-temperature gaseous refrigerant in the capillary tube, and being conducive to achieving the constant temperature dehumidification effect of the air conditioner.

[0067] In this embodiment of the present invention, after the target opening of the target electronic expansion valve is calculated based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the opening of the target electronic expansion valve can be adjusted.

[0068] Furthermore, after the user turns on the air conditioner to dehumidify the air, the control device can send an opening instruction to the target electronic expansion valve, turn on the target electronic expansion valve, and adjust the opening of the target electronic expansion valve to the target opening. The opening of the target electronic expansion valve can be dynamically controlled by the current operating frequency of the air-conditioning compressor and the changes in the inlet and outlet temperatures of the indoor unit to adjust the flow rate of the gaseous refrigerant in the internal gas pipeline of the air conditioner, thereby controlling the heat released by the flow of high-temperature gaseous refrigerant in the capillary tube of the indoor unit.

[0069] Step 120 , regulating the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, so as to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0070] In an embodiment of the present invention, in order to achieve a high-quality constant temperature dehumidification effect, the changes in the indoor unit air inlet temperature information and the indoor unit air outlet temperature information are monitored in real time, and the opening of the target electronic expansion valve is adjusted based on the indoor unit inlet and outlet temperature difference to ensure that the indoor unit inlet and outlet temperature difference is maintained at a stable level.

[0071] Furthermore, in this embodiment, after the target electronic expansion valve is at the target opening, the indoor unit's air inlet temperature information and the indoor unit's air outlet temperature information can be collected in real time by the indoor unit's temperature sensor. According to the indoor unit's air inlet temperature information and the indoor unit's air outlet temperature information, the indoor unit's air inlet and outlet temperature difference can be determined to regulate the target opening of the target electronic expansion valve, so as to control the difference between the indoor unit's air inlet temperature information and the indoor unit's air outlet temperature information to be constant. While the air conditioner is dehumidifying, the effect of constant temperature dehumidification can be achieved, and the effect of focused dehumidification and a small amount of cooling can also be achieved. This can effectively solve the problem in the prior art that when the air conditioner is dehumidifying, the indoor temperature will drop rapidly, which can easily cause discomfort to the user's body surface.

[0072] The present invention provides a constant temperature dehumidification method for an air conditioner. By adding a target electronic expansion valve, the target electronic expansion valve can control the flow of high-temperature gaseous refrigerant in the capillary tube of the indoor unit. When the user turns on the dehumidification function of the air conditioner, the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information are obtained to calculate the target opening of the target electronic expansion valve; the target electronic expansion valve is turned on and the opening of the target electronic expansion valve is adjusted to the target opening, and then the target opening of the target electronic expansion valve is effectively regulated according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, so that the target opening of the target electronic expansion valve can be adjusted according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information. According to the changes in the indoor unit's air inlet temperature and the indoor unit's air outlet temperature, the flow rate of the high-temperature gaseous refrigerant in the indoor unit's capillary tube is dynamically adjusted, and the difference between the indoor unit's air inlet temperature information and the indoor unit's air outlet temperature information is controlled to be constant. In this way, while achieving the dehumidification effect, the heat released by the flow rate of the high-temperature gaseous refrigerant in the capillary tube is effectively controlled, and the temperature of the blowing air flow after dehumidification is accurately compensated to ensure that the indoor unit's air inlet temperature and air outlet temperature remain constant. This can effectively achieve the effect of indoor constant temperature dehumidification, avoid the technical defects of the existing technology that easily cause user body discomfort during the dehumidification process, and provide a good user experience.

[0073] Based on the content of the above embodiment, as an optional embodiment, the target opening of the target electronic expansion valve is regulated according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, including:

[0074] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is the same as the indoor unit air outlet temperature information, adjusting the target electronic expansion valve opening from the target opening to an opening corresponding to a preset constant, and maintaining the target electronic expansion valve opening at the opening corresponding to the preset constant;

[0075] or,

[0076] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is greater than the indoor unit air outlet temperature information, increasing the target electronic expansion valve opening degree based on the target opening degree according to the first target rate;

[0077] or,

[0078] When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is lower than the indoor unit air outlet temperature information, the target electronic expansion valve opening is reduced based on the target opening according to the second target rate.

[0079] Specifically, in the embodiment of the present invention, the first target rate refers to a preset rate of increase of the target electronic expansion valve opening. Optionally, the first target rate can be set to 1 opening / 1 second.

[0080] In the embodiment of the present invention, the second target rate refers to a preset rate of decrease of the target electronic expansion valve opening. Optionally, the second target rate can also be set to 1 opening / 1 second.

[0081] In an embodiment of the present invention, when the user turns on the air conditioner and selects the constant temperature dehumidification mode, the air conditioner switches to the constant temperature dehumidification mode. At this time, the air conditioner compressor is turned on and the target electronic expansion valve is also turned on at the same time. According to the aforementioned opening calculation method and the first formula, the target opening of the target electronic expansion valve is determined, and the opening of the target electronic expansion valve is adjusted to the target opening to perform indoor constant temperature dehumidification processing.

[0082] In some embodiments, during the operation of the air conditioner, when it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is the same as the indoor unit air outlet temperature information, that is, T1=T2, based on the current frequency H of the air conditioner compressor, the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2, the opening of the target electronic expansion valve is determined to be the opening corresponding to the preset constant according to the first formula, such as step 240, that is, at this time, the opening of the target electronic expansion valve is adjusted from the target opening to the opening corresponding to the preset constant, and the opening of the target electronic expansion valve is maintained at the opening corresponding to the preset constant.

[0083] In some embodiments, during operation of the air conditioner, when it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information T1 is greater than the indoor unit air outlet temperature information T2, that is, T1>T2, that is, when the target electronic expansion valve is at a target opening, the indoor unit air inlet temperature is higher than the indoor unit air outlet temperature, and the temperature compensation provided by the indoor unit capillary tube through the high-temperature gaseous refrigerant to the air outlet air flow is insufficient. Therefore, it is necessary to further increase the opening of the target electronic expansion valve to increase the flow rate of the high-temperature gaseous refrigerant in the capillary tube;

[0084] Furthermore, in this embodiment, according to a first target rate, such as 1 opening / 1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually increased, and the flow rate of the high-temperature gaseous refrigerant in the capillary tube is increased, thereby controlling the outlet temperature information of the indoor unit to be consistent with the inlet temperature information, thereby achieving a constant temperature dehumidification effect.

[0085] In some embodiments, during operation of the air conditioner, when it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information T1 is less than the indoor unit air outlet temperature information T2, that is, T1 < T2, that is, when the target electronic expansion valve is at a target opening, the indoor unit air inlet temperature is less than the indoor unit air outlet temperature, and the capillary tube of the indoor unit provides excessive temperature compensation for the outlet airflow through the high-temperature gaseous refrigerant. Therefore, it is necessary to reduce the opening of the target electronic expansion valve to reduce the flow rate of the high-temperature gaseous refrigerant in the capillary tube;

[0086] Furthermore, in this embodiment, according to a second target rate, such as 1 opening / 1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually reduced to reduce the flow rate of the high-temperature gaseous refrigerant in the capillary tube, thereby controlling the outlet temperature information of the indoor unit to be consistent with the inlet temperature information, thereby achieving a constant temperature dehumidification effect.

[0087] The method of the embodiment of the present invention, when the air conditioner is in a constant temperature dehumidification mode, directly obtains whether the indoor unit's air inlet temperature information is the same as the air outlet temperature information, and adjusts the opening of the target electronic expansion valve. This can effectively control the flow rate of the high-temperature gaseous refrigerant in the indoor unit's capillary tube, ensuring that the indoor unit's air inlet temperature and outlet temperature are always consistent, thereby achieving a high-quality indoor constant temperature dehumidification effect.

[0088] Based on the content of the above embodiment, as an optional embodiment, before opening the target electronic expansion valve and adjusting the opening degree of the target electronic expansion valve to the target opening degree, the method further includes:

[0089] When it is detected that the air conditioner is not in the constant temperature dehumidification mode, the current preset mode is maintained and the indoor temperature information and indoor humidity information are obtained;

[0090] When the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information are obtained.

[0091] Specifically, in the embodiment of the present invention, the target temperature threshold refers to a preset temperature threshold, which is used to compare with the detected indoor temperature to determine whether to open the target electronic expansion valve when the air conditioner is not operating in the constant temperature dehumidification mode.

[0092] Optionally, in this embodiment, the target temperature threshold may be 26°C.

[0093] In an embodiment of the present invention, the first humidity threshold refers to a pre-set humidity threshold, which is used to compare with the detected indoor humidity to determine whether to open the target electronic expansion valve when the air conditioner is not operating in a constant temperature dehumidification mode; it is determined based on the humidity range that the human body feels comfortable with, wherein the humidity range of the human body surface comfort is 45% to 65%.

[0094] Optionally, in this embodiment, the first humidity threshold may be 70%.

[0095] In the embodiment of the present invention, the air conditioner is not in the constant temperature dehumidification mode, which means that when the user selects the normal mode to operate the cooling or dehumidification function, the air conditioner is in the preset mode, that is, the operating mode corresponding to the cooling or dehumidification function.

[0096] Furthermore, in this embodiment, when it is detected that the air conditioner is not in the constant temperature dehumidification mode, the current preset mode is maintained and continued to operate, and at the same time, indoor temperature information and indoor humidity information are respectively obtained through the temperature sensor and humidity sensor in the indoor unit;

[0097] When the indoor temperature information is lower than the target temperature threshold, such as 26°C, and the indoor humidity information is higher than the first humidity threshold, such as 70%, the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information are obtained, and then the target opening of the target electronic expansion valve can be calculated based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, and the target electronic expansion valve is opened to perform indoor dehumidification processing.

[0098] The method of the embodiment of the present invention can monitor the indoor temperature and humidity in real time when the user selects the normal mode to run the cooling or dehumidification function and the air conditioner is not in the constant temperature dehumidification mode. When the preset temperature and humidity conditions are met, the target electronic expansion valve is started to make the air conditioner perform constant temperature dehumidification. This can ensure that the user can achieve a large amount of dehumidification and a small amount of cooling when selecting the normal mode, thereby improving the user's comfort and usage experience.

[0099] Based on the content of the above embodiment, as an optional embodiment, the target opening of the target electronic expansion valve is regulated according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, including:

[0100] When the difference between the air inlet temperature information and the air outlet temperature information of the indoor unit is equal to the target threshold, adjusting the opening of the target electronic expansion valve from the target opening to the opening corresponding to the preset constant, and maintaining the opening of the target electronic expansion valve at the opening corresponding to the preset constant;

[0101] or,

[0102] When the difference between the indoor unit air inlet temperature information and the air outlet temperature information is greater than the target threshold, increasing the target electronic expansion valve opening degree based on the target opening degree according to the first target rate;

[0103] or,

[0104] When it is detected that the air conditioner is in constant temperature dehumidification mode and the difference between the indoor unit air inlet temperature information and the air outlet temperature information is less than the target threshold, the target electronic expansion valve opening is reduced based on the target opening according to the second target rate.

[0105] Specifically, in embodiments of the present invention, the target threshold refers to a pre-set temperature threshold used to determine the threshold range for regulating the target opening of the target electronic expansion valve when the air conditioner is not operating in constant temperature dehumidification mode. This threshold can be set based on actual design requirements.

[0106] Optionally, in this embodiment, the target threshold value may be set to 8°C.

[0107] In some embodiments, during operation of the air conditioner, when it is detected that the air conditioner is not in constant temperature dehumidification mode, i.e., the air conditioner is in normal mode operating the cooling or dehumidification function, and the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is equal to a target threshold value, such as T1-T2=8°C, a target electronic expansion valve opening is determined to be an opening corresponding to a preset constant according to a second formula based on the current air conditioner compressor frequency H, the indoor unit air inlet temperature information T1, and the indoor unit air outlet temperature information T2, as in step 240. At this time, the target electronic expansion valve opening is adjusted from the target opening to an opening corresponding to the preset constant, and the target electronic expansion valve opening is maintained at the opening corresponding to the preset constant. This solution is intended to increase dehumidification while maintaining normal cooling, and also to prevent excessive cooling from causing the indoor temperature to drop too low, thereby maintaining the indoor unit air outlet temperature approximately 8°C lower than the air inlet temperature.

[0108] In some embodiments, during operation of the air conditioner, if it is detected that the air conditioner is not in a constant temperature dehumidification mode, and the difference between the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2 is greater than a target threshold, such as when T1-T2>8°C, then T1-T2-8 is a positive number. That is, when the target electronic expansion valve is at the target opening, the indoor unit air inlet temperature is significantly higher than the indoor unit air outlet temperature, and the temperature compensation provided by the indoor unit capillary tube through the high-temperature gaseous refrigerant to the air outlet is insufficient. Therefore, it is necessary to increase the opening of the target electronic expansion valve to increase the flow rate of the high-temperature gaseous refrigerant in the capillary tube.

[0109] Furthermore, in this embodiment, according to a first target rate, such as 1 opening / 1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually increased, and the flow rate of the high-temperature gaseous refrigerant in the capillary tube is increased, thereby controlling the temperature difference between the outlet temperature information and the inlet temperature information of the indoor unit to be constant, so that the air conditioner can achieve the functions of focused dehumidification and small amount of cooling.

[0110] In some embodiments, during air conditioner operation, if it is detected that the air conditioner is not in constant temperature dehumidification mode, and the difference between the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2 is less than a target threshold, that is, T1-T2<8°C, then T1-T2-8 is a negative number. In other words, when the target electronic expansion valve is at the target opening, the indoor unit air inlet temperature is much lower than the indoor unit air outlet temperature, and the capillary tube of the indoor unit provides excessive temperature compensation for the outlet airflow through the high-temperature gaseous refrigerant. Therefore, the opening of the target electronic expansion valve can be reduced to reduce the flow rate of the high-temperature gaseous refrigerant in the capillary tube.

[0111] Furthermore, in this embodiment, according to a second target rate, such as 1 opening / 1 second, on the basis of the target opening, the opening of the target electronic expansion valve is gradually reduced to reduce the flow rate of the high-temperature gaseous refrigerant in the capillary tube, thereby controlling the temperature difference between the outlet temperature information and the inlet temperature information of the indoor unit to be constant, so that the air conditioner can achieve the functions of focused dehumidification and small amount of cooling.

[0112] The method of the embodiment of the present invention, when the air conditioner is not in constant temperature dehumidification mode but in the scenario where the cooling or dehumidification function is running in the normal mode, obtains the indoor unit's air inlet temperature information and air outlet temperature information, and determines whether the target electronic expansion valve needs to be opened and regulated based on the target threshold value. It can also effectively control the flow rate of the high-temperature gaseous refrigerant in the indoor unit capillary tube, ensuring that the temperature difference between the indoor unit's air inlet temperature and the air outlet temperature is not too large and is within an acceptable range, so as to achieve the effect of large-scale dehumidification and small-scale cooling of the air conditioner, thereby improving the user experience.

[0113] Based on the content of the above embodiment, as an optional embodiment, after adjusting the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the method further includes:

[0114] When detecting that the indoor humidity information is less than a second humidity threshold, closing the target electronic expansion valve;

[0115] Switch the air conditioner's operating mode back to the current preset mode.

[0116] Specifically, in an embodiment of the present invention, the second humidity threshold refers to another pre-set humidity threshold, which is used to compare with the detected indoor humidity to determine whether the target electronic expansion valve needs to be closed after the air conditioner performs constant temperature dehumidification; it is also determined based on the humidity range that the human body feels comfortable with.

[0117] Optionally, in this embodiment, the second humidity threshold may be 55%.

[0118] That is to say, in this embodiment, after detecting that the air conditioner is not in the constant temperature dehumidification mode, the target electronic expansion valve is opened, and the target opening of the target electronic expansion valve is regulated. After the indoor temperature dehumidification is performed, the control device controls the humidity sensor of the indoor unit to continuously detect the indoor humidity information. After determining that the indoor humidity has dropped to 55%, the target electronic expansion valve will be automatically closed, and the operating mode of the air conditioner will be switched back to the previous preset mode.

[0119] The method of the embodiment of the present invention is to start the target electronic expansion valve to make the air conditioner perform constant temperature dehumidification for the indoor environment when the user selects the normal mode to operate the cooling or dehumidification function and the air conditioner is not in the constant temperature dehumidification mode. Then, by real-time monitoring of the humidity information of the indoor environment, when it is determined that the indoor humidity reaches the human comfort range, close the target electronic expansion valve and switch the operating mode of the air conditioner back to the previous preset mode. This improves the user comfort during the dehumidification process of the air conditioner while reducing the operating power consumption of the air conditioner, thereby achieving the effect of energy saving and emission reduction.

[0120] In a specific embodiment, when the user turns on the air conditioner and selects the constant temperature dehumidification mode, the air conditioner switches to the constant temperature dehumidification mode. At this time, the air conditioner compressor is turned on and the target electronic expansion valve is also turned on at the same time. The target opening of the target electronic expansion valve is determined based on the first formula P1 = A(T1-T2)H+240, wherein the opening adjustment range of P1 is 0 to 480 steps. The refrigerant passes through the condenser, the throttling device, the evaporator, and returns to the compressor, repeating the cycle. The indoor evaporator absorbs heat to dehumidify the indoor air, and then the cold air passes through the capillary tube under the evaporator. Due to the high-temperature gaseous refrigerant in the capillary tube, the cold air absorbs heat and heats up again. The heated air is blown into the room, thereby achieving the same inlet and outlet temperatures.

[0121] When the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2 are detected, the opening of the target electronic expansion valve is controlled based on the temperatures of T1 and T2. When T1>T2, T1-T2 is a positive number, the target opening of the target electronic expansion valve is increased, and the adjustment rate, i.e., the first target rate, is increased by 1 opening degree per 1 second. When T1<T2, T1-T2 is a negative number, the target opening of the target electronic expansion valve is decreased, and the adjustment rate, i.e., the second target rate, is decreased by 1 opening degree per 1 second. When T1=T2, the target opening is adjusted to 240 steps and maintained unchanged.

[0122] When the user selects the normal mode to run the cooling or dehumidification function (the heating mode is when the outdoor condensation water frosts and constant temperature dehumidification cannot be achieved), the air conditioner operates according to normal logic and detects the indoor temperature and humidity data in real time based on the temperature sensor and humidity sensor. After the air conditioner has been running for a period of time, when the indoor temperature information is detected to be lower than 26 degrees, the operation is adjusted according to the indoor humidity value. When the indoor humidity information is higher than 70%, it is determined that the indoor temperature is suitable but the humidity is too high, which may cause discomfort to the user. At this time, the constant temperature dehumidification electronic expansion valve is turned on, and the target opening of the target electronic expansion valve is determined based on the second formula P2=A(T1-T2-8)H+240, where the opening adjustment range of P2 is 0-480. The purpose of turning on the target electronic expansion valve at this time is to realize the function of the air conditioner to perform focused dehumidification and a small amount of cooling in the room, and at the same time, the opening adjustment of the target electronic expansion valve is changed according to the indoor unit air inlet temperature information T1 and the indoor unit air outlet temperature information T2;

[0123] When T1>T2+8, T1-T2-8 is a positive number, then the target opening of the target electronic expansion valve is increased, and the adjustment rate, i.e., the first target rate, is increased by 1 opening degree per 1 second. When T1<T2+8, T1-T2-8 is a negative number, then the target opening of the target electronic expansion valve is decreased, and the adjustment rate, i.e., the second target rate, is decreased by 1 opening degree per 1 second. When T1=T2+8, T1-T2-8=0, then the target opening is adjusted to 240 steps and maintained unchanged.

[0124] In this embodiment, the above scheme is to increase the dehumidification capacity while performing normal cooling, and also to prevent excessive cooling from causing the indoor temperature to be too low, so that the outlet temperature can be kept about 8 degrees lower than the inlet temperature.

[0125] When the indoor humidity is detected to be less than 55%, the target electronic expansion valve is closed and the air conditioner continues to operate according to normal logic. This solution is suitable for both fixed-frequency and variable-frequency air conditioners.

[0126] The constant temperature dehumidification system for an air conditioner provided by the present invention is described below. The constant temperature dehumidification system for an air conditioner described below and the constant temperature dehumidification method for an air conditioner described above can be referred to each other.

[0127] Figure 3 This is a structural diagram of the constant temperature dehumidification system of the air conditioner provided by the present invention. Figure 3 As shown, including:

[0128] an opening module 310 for opening a target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information;

[0129] The control module 320 is used to control the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0130] The air conditioner constant temperature dehumidification system described in this embodiment can be used to execute the above-mentioned air conditioner constant temperature dehumidification method embodiment. Its principles and technical effects are similar and will not be repeated here.

[0131] The constant temperature dehumidification system of the air conditioner in the embodiment of the present invention adds a target electronic expansion valve, which can control the flow of high-temperature gaseous refrigerant in the capillary tube of the indoor unit. When the user turns on the dehumidification function of the air conditioner, the target opening of the target electronic expansion valve is calculated by obtaining the frequency of the air conditioner compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information; the target electronic expansion valve is turned on and the opening of the target electronic expansion valve is adjusted to the target opening, and then the target opening of the target electronic expansion valve is effectively regulated according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, so that the target opening of the target electronic expansion valve can be adjusted according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information. According to the changes in the indoor unit's air inlet temperature and the indoor unit's air outlet temperature, the flow rate of the high-temperature gaseous refrigerant in the indoor unit's capillary tube is dynamically adjusted, and the difference between the indoor unit's air inlet temperature information and the indoor unit's air outlet temperature information is controlled to be constant. In this way, while achieving the dehumidification effect, the heat released by the flow rate of the high-temperature gaseous refrigerant in the capillary tube is effectively controlled, and the temperature of the blowing air flow after dehumidification is accurately compensated to ensure that the indoor unit's air inlet temperature and air outlet temperature remain constant. This can effectively achieve the effect of indoor constant temperature dehumidification, avoid the technical defects of the existing technology that easily cause user body discomfort during the dehumidification process, and provide a good user experience.

[0132] An air conditioner provided by the present invention includes an indoor unit and an outdoor unit, the outdoor unit including a condenser, an air-conditioning compressor, a control device, and a target electronic expansion valve, the indoor unit including an evaporator, a capillary tube, a temperature sensor, and a humidity sensor, the target electronic expansion valve being disposed on a communication pipe between an exhaust port of the air-conditioning compressor and an air inlet of the capillary tube, the air-conditioning compressor, the target electronic expansion valve, the temperature sensor, and the humidity sensor being electrically connected to the control device, respectively;

[0133] The control device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the processor executes the program, it can execute the constant temperature dehumidification method for the air conditioner provided by the above-mentioned methods. The method includes: opening a target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information; according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the target opening of the target electronic expansion valve is regulated to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0134] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the constant temperature dehumidification method for the air conditioner provided by the above methods, the method including: opening a target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information; according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the target opening of the target electronic expansion valve is regulated to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0135] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the constant temperature dehumidification method for an air conditioner provided by the above-mentioned methods, the method comprising: opening a target electronic expansion valve, and adjusting the opening of the target electronic expansion valve to a target opening; the target opening is determined based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information; and according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the target opening of the target electronic expansion valve is regulated to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant.

[0136] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0137] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A constant temperature dehumidification method for an air conditioner, characterized in that: include: When it is detected that the air conditioner is not in the constant temperature dehumidification mode, the current preset mode is maintained and the indoor temperature information and indoor humidity information are obtained; When the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, obtaining the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information; opening a target electronic expansion valve and adjusting the opening of the target electronic expansion valve to a target opening; The target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information; According to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, regulating the target opening of the target electronic expansion valve to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant; The method for determining the target opening degree based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information includes: calculating a difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information, and calculating a target product based on the difference, the frequency of the air conditioner compressor, and a preset correction coefficient; The target opening of the target electronic expansion valve is obtained according to the target product and the preset constant, that is, P1=A(T1-T2)H+240, Wherein, H represents the frequency of the air conditioner compressor, T1 represents the indoor unit air inlet temperature information, T2 represents the indoor unit air outlet temperature information, and A represents the preset correction coefficient.

2. The constant temperature dehumidification method for air conditioner according to claim 1, characterized in that: Regulating the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, including: When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is the same as the indoor unit air outlet temperature information, adjusting the target electronic expansion valve opening from the target opening to the opening corresponding to the preset constant, and maintaining the target electronic expansion valve opening at the opening corresponding to the preset constant; or, When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is greater than the indoor unit air outlet temperature information, increasing the target electronic expansion valve opening degree based on the target opening degree according to a first target rate; or, When it is detected that the air conditioner is in a constant temperature dehumidification mode and the indoor unit air inlet temperature information is less than the indoor unit air outlet temperature information, the target electronic expansion valve opening is reduced based on the target opening according to a second target rate.

3. The constant temperature dehumidification method for an air conditioner according to claim 1, characterized in that: Regulating the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, including: When the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is equal to a target threshold, adjusting the target electronic expansion valve opening from the target opening to an opening corresponding to the preset constant, and maintaining the target electronic expansion valve opening at the opening corresponding to the preset constant; or, When the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is greater than the target threshold, increasing the target electronic expansion valve opening at a first target rate based on the target opening; or, When it is detected that the air conditioner is in a constant temperature dehumidification mode and the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information is less than the target threshold, the opening of the target electronic expansion valve is reduced based on the target opening at a second target rate.

4. The constant temperature dehumidification method for an air conditioner according to any one of claims 1 to 3, characterized in that: After adjusting the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, the method further includes: When detecting that the indoor humidity information is less than a second humidity threshold, closing the target electronic expansion valve; The operating mode of the air conditioner is switched back to the current preset mode.

5. An air conditioner constant temperature dehumidification system, characterized in that: include: an opening module, configured to open a target electronic expansion valve and adjust the opening of the target electronic expansion valve to a target opening; The target opening is determined based on the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information; a control module, configured to control the target opening of the target electronic expansion valve according to the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, so as to control the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information to be constant; Before the target electronic expansion valve is opened and the opening of the target electronic expansion valve is adjusted to the target opening, the method further includes: when it is detected that the air conditioner is not in the constant temperature dehumidification mode, maintaining the current preset mode operation and obtaining indoor temperature information and indoor humidity information; when the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, obtaining the frequency of the air conditioner compressor, the indoor unit air inlet temperature information, and the indoor unit air outlet temperature information; The method for determining the target opening based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information includes: calculating the difference between the indoor unit air inlet temperature information and the indoor unit air outlet temperature information based on the frequency of the air-conditioning compressor, the indoor unit air inlet temperature information and the indoor unit air outlet temperature information, and calculating the target product based on the difference, the frequency of the air-conditioning compressor and a preset correction coefficient; and obtaining the target opening of the target electronic expansion valve according to the target product and a preset constant.

6. An air conditioner, characterized in that: The air conditioner comprises an indoor unit and an outdoor unit, wherein the outdoor unit comprises a condenser, an air conditioner compressor, a control device, and a target electronic expansion valve; the indoor unit comprises an evaporator, a capillary tube, a temperature sensor, and a humidity sensor; the target electronic expansion valve is arranged on a communication pipe between the air conditioner compressor exhaust port and the capillary tube air inlet; the air conditioner compressor, the target electronic expansion valve, the temperature sensor, and the humidity sensor are electrically connected to the control device, respectively; The control device includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the constant temperature and dehumidification control method for the air conditioner as described in any one of claims 1 to 4 is implemented.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the constant temperature dehumidification method for an air conditioner as claimed in any one of claims 1 to 4 is implemented.

8. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the constant temperature dehumidification method for an air conditioner as claimed in any one of claims 1 to 4 is implemented.

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