Method, device for controlling air conditioner and air conditioner

Abstract

The application relates to the air conditioning technical field, and discloses a method and device for controlling an air conditioner and the air conditioner. The indoor unit comprises an indoor heat exchanger, the indoor heat exchanger comprises a plurality of heat exchange channels and a dehumidification valve, the dehumidification valve is located between two adjacent heat exchange channels, the dehumidification valve can throttle refrigerant, so that the temperature of the refrigerant downstream of the dehumidification valve is lower than the temperature of the refrigerant upstream of the dehumidification valve, the method comprises the following steps: when a dehumidification mode is operated, the first humidity of the indoor unit is acquired; in the case that the first humidity of the indoor unit is greater than a preset humidity, and the difference between the first humidity of the indoor unit and the preset humidity is greater than or equal to a first humidity threshold value, the opening degree of the dehumidification valve is controlled to be reduced, and the coil temperature of the heat exchange channel downstream of the dehumidification valve is acquired; and according to the coil temperature of the heat exchange channel downstream of the dehumidification valve, the working of the fan of the indoor unit or the opening degree of the dehumidification valve is controlled. The temperature of the heat exchanger can be adjusted in time, so that the air conditioner can meet the requirements of users on temperature and humidity at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, for example, relates to a kind of method for controlling air conditioner, device and air conditioner. BACKGROUND

[0002] At present, household air conditioner has been popular in China, is used for refrigeration and dehumidification in summer, is used for heating in winter.Dehumidification technology is to make air conditioner run in refrigeration mode, while indoor unit fan is maintained at lower gear, at this time, indoor unit evaporator is cooled to the dew point by indoor air, and condensate water is precipitated, so as to achieve the purpose of dehumidification.

[0003] In related technology, constant temperature dehumidification is generally used for dehumidification, i.e.the process of heating the air cooled by evaporator again, so that the temperature of air dehumidified is increased again, to ensure that the indoor air temperature is relatively stable.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The air conditioner in related art cannot accurately control the temperature of heat exchanger, so that the air conditioner cannot meet the user's demand for temperature and humidity adjustment at the same time.

[0006] It should be noted that the information disclosed in the above background art section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or to delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a kind of method for controlling air conditioner, device and air conditioner, to improve the control of the temperature of heat exchanger, to meet the user's demand for temperature and humidity adjustment at the same time.

[0009] The embodiment of the present disclosure provides a method for controlling an air conditioner, the air conditioner comprising an indoor unit, the indoor unit comprising an indoor heat exchanger, the indoor heat exchanger comprising a plurality of heat exchange channels and a dehumidification valve, the dehumidification valve being located between two adjacent heat exchange channels, the dehumidification valve being capable of throttling refrigerant so that the temperature of the refrigerant downstream of the dehumidification valve is lower than the temperature of the refrigerant upstream of the dehumidification valve, the method comprising: obtaining a first humidity of an indoor space when the dehumidification mode is running; in the case that the first humidity of the indoor space is greater than a preset humidity and the difference between the first humidity of the indoor space and the preset humidity is greater than or equal to a first humidity threshold, controlling the dehumidification valve to reduce the opening degree and obtaining the temperature of a coil of the heat exchange channel downstream of the dehumidification valve; and controlling the operation of a fan of the indoor unit or the opening degree of the dehumidification valve according to the temperature of the coil of the heat exchange channel downstream of the dehumidification valve.

[0010] The embodiment of the present disclosure also provides a device for controlling an air conditioner, comprising a processor and a memory storing program instructions, the processor being configured to execute the method for controlling an air conditioner as described in any of the above embodiments when the program instructions are executed.

[0011] The embodiment of the present disclosure also provides an air conditioner, comprising: an air conditioner body; and a device for controlling an air conditioner as described in any of the above embodiments, which is installed on the air conditioner body.

[0012] The method for controlling an air conditioner, the device and the air conditioner provided by the embodiment of the present disclosure can achieve the following technical effects:

[0013] The air conditioner of the embodiment of the present disclosure is provided with a dehumidification valve between two adjacent heat exchange channels, the temperature of the refrigerant downstream of the dehumidification valve is lower after throttling of the dehumidification valve, so that the refrigerant downstream of the dehumidification valve can dehumidify the airflow flowing therethrough. When the air conditioner is running in the dehumidification mode, the opening degree of the dehumidification valve is reduced when the humidity of the indoor space is relatively high, so as to improve the throttling effect of the dehumidification valve and further reduce the temperature of the refrigerant downstream of the dehumidification valve and further improve the dehumidification effect. After the opening degree of the dehumidification valve is reduced, the temperature of the coil downstream of the dehumidification valve is obtained, the temperature of the refrigerant after throttling is determined according to the temperature of the coil downstream of the dehumidification valve, the temperature of the refrigerant after throttling affects the dehumidification effect and the temperature regulation effect, and the air conditioner controls the operation of the fan or the dehumidification valve according to the temperature of the coil downstream of the dehumidification valve, so as to timely adjust the temperature of the heat exchanger, so that the air conditioner can simultaneously meet the requirements of the user on the temperature and the humidity.

[0014] The general description above and the following description below are exemplary and explanatory only and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the embodiments. Like numbers refer to like elements throughout the drawings, and:

[0016] Figure 1 is a structural schematic diagram of an indoor heat exchanger provided by an embodiment of the present disclosure;

[0017] Figure 2 is a refrigerant flow schematic diagram when the refrigerant flows from the first end of the first heat exchange pipe group to the second end of the first heat exchange pipe group;

[0018] Figure 3 is a refrigerant flow schematic diagram when the refrigerant flows from the second end of the first heat exchange pipe group to the first end of the first heat exchange pipe group;

[0019] Figure 4 is a structural schematic diagram of another indoor heat exchanger provided by an embodiment of the present disclosure;

[0020] Figure 5 is a refrigerant flow schematic diagram when the refrigerant flows from the first end of the first heat exchange pipe group to the second end of the first heat exchange pipe group;

[0021] Figure 6 is a refrigerant flow schematic diagram when the refrigerant flows from the second end of the first heat exchange pipe group to the first end of the first heat exchange pipe group;

[0022] Figure 7 is a structural schematic diagram of another indoor heat exchanger provided by an embodiment of the present disclosure;

[0023] Figure 8 is a refrigerant flow schematic diagram when the refrigerant flows from the first end of the first heat exchange pipe group to the second end of the first heat exchange pipe group;

[0024] Figure 9 is a refrigerant flow schematic diagram when the refrigerant flows from the second end of the first heat exchange pipe group to the first end of the first heat exchange pipe group;

[0025] Figure 10 is a structural schematic diagram of another indoor heat exchanger provided by an embodiment of the present disclosure;

[0026] Figure 11 is a refrigerant flow schematic diagram when the refrigerant flows from the first end of the first heat exchange pipe group to the second end of the first heat exchange pipe group;

[0027] Figure 12is another refrigerant flow schematic diagram provided by the embodiment of the present disclosure when the refrigerant flows from the second end of the first heat exchange pipe group to the first end of the first heat exchange pipe group;

[0028] Figure 13 is another structure schematic diagram of an indoor heat exchanger provided by the embodiment of the present disclosure;

[0029] Figure 14 is another structure schematic diagram of an indoor heat exchanger provided by the embodiment of the present disclosure;

[0030] Figure 15 is another structure schematic diagram of an indoor heat exchanger provided by the embodiment of the present disclosure;

[0031] Figure 16 is another structure schematic diagram of an indoor heat exchanger provided by the embodiment of the present disclosure;

[0032] Figure 17 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0033] Figure 18 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0034] Figure 19 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0035] Figure 20 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0036] Figure 21 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0037] Figure 22 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0038] Figure 23 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0039] Figure 24 is a schematic diagram of a method for controlling an air conditioner provided by the embodiment of the present disclosure;

[0040] Figure 25 is a structure schematic diagram of an air conditioner provided by the embodiment of the present disclosure.

[0041] Reference signs:

[0042] 10. First heat exchange tube assembly; 101. First heat exchange channel; 102. Second heat exchange channel; 103. Third heat exchange channel; 104. First pipeline; 105. Second pipeline; 106. Third pipeline; 107. Fourth pipeline; 20. Dehumidification valve; 201. First dehumidification valve; 202. Second dehumidification valve; 203. Third dehumidification valve; 30. Diverter; 301. First valve; 302. Second valve; 40. Second heat exchange tube assembly; 401. Fourth heat exchange channel; 402. Connecting pipeline; 50. Throttling device; 60. Liquid storage tank; 70. Gas-liquid separator; 90. Device for controlling air conditioning; 900. Processor; 901. Memory; 902. Communication interface; 903. Bus. Detailed Implementation

[0043] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0044] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0045] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0046] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0047] Unless otherwise stated, the term "multiple" means two or more.

[0048] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0050] For ease of description, the temperature of the refrigerant indicated by the solid arrow in the attached diagram is greater than the temperature of the refrigerant indicated by the dashed arrow.

[0051] Combination Figures 1 to 16 As shown, this embodiment of the present disclosure provides an air conditioner, which includes a refrigerant circulation loop. The refrigerant circulation loop includes a compressor, an indoor unit, a throttling device 50, and an outdoor unit connected by refrigerant pipelines. The refrigerant circulation loop also includes a four-way valve, which can switch the flow direction of the refrigerant within the refrigerant circulation loop. When the air conditioner is heating, the high-temperature, high-pressure refrigerant flowing from the compressor flows into the indoor heat exchanger of the indoor unit through the four-way valve. After condensation and heat dissipation in the outdoor heat exchanger, it flows from the indoor heat exchanger to the throttling device 50 for throttling, and then flows into the outdoor heat exchanger of the outdoor unit. When the air conditioner is cooling, the high-temperature, high-pressure refrigerant flowing from the compressor flows into the outdoor heat exchanger of the outdoor unit through the four-way valve. After flowing out of the outdoor heat exchanger, it is throttled by the throttling device 50 and then flows into the indoor heat exchanger of the indoor unit for evaporative cooling. Optionally, the throttling device 50 is an electronic expansion valve or a capillary tube, etc.

[0052] This disclosure provides an indoor heat exchanger, which includes a heat exchange tube assembly. The heat exchange tube assembly includes multiple heat exchange channels, forming a first heat exchange tube assembly (hereinafter referred to as the first heat exchange tube assembly 10 for ease of distinction). The first heat exchange tube assembly 10 includes multiple heat exchange channels. A first end of the first heat exchange tube assembly 10 is adapted to be connected to a compressor, and a second end of the first heat exchange tube assembly 10 is adapted to be connected to a throttling device 50. The multiple heat exchange channels are connected between the first end and the second end of the first heat exchange tube assembly 10. Each heat exchange channel includes fins and refrigerant piping. When refrigerant flows into the heat exchange channel, it can exchange heat through the fins to achieve cooling or heating.

[0053] Optionally, the indoor heat exchanger also includes a dehumidifying valve 20, which is located in the heat exchange channel or between any two heat exchange channels. The dehumidifying valve 20 can throttle the refrigerant so that the temperature of the refrigerant downstream of the dehumidifying valve 20 is lower than the temperature of the refrigerant upstream of the dehumidifying valve 20. In this embodiment, the dehumidifying valve 20 has a throttling function, so the temperature of the refrigerant is further reduced after passing through the dehumidifying valve 20. This ensures that the temperature of the refrigerant downstream of the dehumidifying valve 20 is lower than the temperature of the refrigerant upstream of the dehumidifying valve 20, thus allowing the downstream of the dehumidifying valve 20 to be used for dehumidification, thereby enabling the indoor heat exchanger to have a dehumidification function. The upstream of the dehumidifying valve 20 can be a reheat condensing section or a refrigeration section. Optionally, the dehumidifying valve does not throttle when fully open, but throttling can be performed after opening to a certain degree.

[0054] Optionally, such as Figures 1 to 6 As shown, there is one dehumidification valve 20. When the refrigerant flows from the first end of the first heat exchange tube group 10 to the second end of the first heat exchange tube group 10, a condensation reheat section is formed between the dehumidification valve 20 and the first end of the indoor heat exchanger, and a dehumidification section is formed between the dehumidification valve 20 and the second end of the indoor heat exchanger. The area of ​​the condensation reheat section is larger than the area of ​​the dehumidification section, or the area of ​​the condensation reheat section is smaller than the area of ​​the dehumidification section.

[0055] In this embodiment, when the refrigerant flows from the first end to the second end of the first heat exchange tube assembly 10, the high-temperature, high-pressure refrigerant from the compressor flows into the first heat exchange tube assembly 10 through the first end. After being throttled by the dehumidification valve 20, its temperature decreases. Thus, the heat exchange channel between the dehumidification valve 20 and the first end of the first heat exchange tube assembly 10 forms a condensation-reheat section, and the heat exchange channel between the dehumidification valve 20 and the second end of the first heat exchange tube assembly 10 forms a dehumidification section. In this way, the airflow of the indoor unit first flows through the condensation-reheat section for heating, and then flows through the dehumidification section for cooling and dehumidification. Therefore, when the indoor temperature needs to be moderately increased but the humidity is high, the airflow flows through the condensation-reheat section for heating before flowing through the dehumidification section, thus achieving dehumidification and maintaining a constant temperature. Alternatively, the airflow of the indoor unit can first flow through the dehumidification section for dehumidification, and then flow through the condensation-reheat section for heating, thereby achieving constant temperature dehumidification. The area of ​​the condensation-reheat section is larger than the area of ​​the dehumidification section, resulting in a larger heating range, suitable for environments with low humidity. The area of ​​the condenser-reheat section can also be smaller than that of the dehumidification section, making it suitable for environments with high humidity. This allows for the selection of heat exchangers at different positions on the dehumidification valve 20, depending on the operating environment, thus achieving varying dehumidification effects.

[0056] Optionally, the ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is in the range of 1 / 3 to 3 / 4.

[0057] In this embodiment, when the ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is less than 1 / 3, the area of ​​the condensing reheat section is too small, leading to incomplete refrigerant condensation. The refrigerant will be in a two-phase state when passing through the dehumidification valve 20, resulting in a significant cold impact on the valve core, causing substantial noise, large energy loss due to throttling, and affecting the normal operation of the refrigerant circuit. When the ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is greater than 3 / 4, the area of ​​the dehumidification section is too small, resulting in insignificant dehumidification. The ideal ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is between 1 / 3 and 3 / 4. This ensures sufficient refrigerant condensation, with the refrigerant completely becoming liquid, or even subcooled, which is beneficial for dehumidification and reduces noise.

[0058] Optionally, the ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is in the range of 1 / 3 to 2 / 3.

[0059] In this embodiment, the ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is further reduced to the range of 1 / 3-2 / 3, which can ensure the uniformity of refrigerant flow in the indoor heat exchanger and maximize the efficiency of refrigerant condensation and dehumidification effect of the dehumidification section.

[0060] For example, the ratio of the area of ​​the condensing reheat section to the area of ​​the indoor heat exchanger is 1 / 3, 1 / 2, 2 / 3, or 3 / 4, etc.

[0061] Optionally, such asFigures 7 to 10 As shown, there are multiple dehumidification valves 20, and these multiple dehumidification valves 20 can be connected in series. In this way, the dehumidification valves 20 in the first heat exchange tube group 10 can undergo multiple throttling processes, further increasing the number of different temperature ranges of the heat exchanger, which can improve the diversity and range of dehumidification and temperature control, and improve the user experience.

[0062] Optionally, multiple dehumidification valves 20 and multiple heat exchange channels are arranged alternately and sequentially. In this way, different heat exchange channels can form different temperatures, further increasing the temperature range and temperature spectrum.

[0063] Optionally, the first heat exchange tube group 10 further includes a flow distribution component located within the first heat exchange tube group 10. The flow distribution component enables multiple heat exchange channels to be connected in series when the refrigerant flows from the first end of the first heat exchange tube group 10 to the second end of the first heat exchange tube group 10, and multiple heat exchange channels to be connected in parallel when the refrigerant flows from the second end of the first heat exchange tube group 10 to the first end of the first heat exchange tube group 10.

[0064] In this embodiment, the flow-diverting component ensures that the refrigerant flows differently when switching between cooling and heating modes in the indoor heat exchanger. When the refrigerant flows from the second end to the first end of the first heat exchange tube group 10, it passes through more branches, effectively reducing the pressure drop along the flow path and improving heat exchange efficiency. When the refrigerant flows from the first end to the second end of the first heat exchange tube group 10, the flow path becomes longer, the branches become shorter, the flow velocity increases, and circulation is improved, increasing the heat transfer coefficient inside the tubes and further enhancing heat exchange efficiency. Furthermore, through the flow-diverting component and the dehumidifying valve 20, the indoor heat exchanger achieves dehumidification while simultaneously improving heat exchange efficiency and air conditioning energy efficiency.

[0065] Optionally, the number of heat exchange channels can be three, four, five, or six, depending on the size of the indoor heat exchanger.

[0066] Optionally, the multiple heat exchange channels include a first heat exchange channel 101, a second heat exchange channel 102, and a third heat exchange channel 103. The refrigerant flows from the first end of the first heat exchange tube group 10 to the second end of the first heat exchange tube group 10. Along the flow direction of the refrigerant, the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103 are connected in series. When the refrigerant flows from the second end of the first heat exchange tube group 10 to the first end of the first heat exchange tube group 10, the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103 are connected in parallel between the first end of the first heat exchange tube group 10 and the second end of the first heat exchange tube group 10.

[0067] In this embodiment, the three heat exchange channels of the indoor heat exchanger can achieve variable flow distribution during cooling and heating. When the refrigerant flows from the first end to the second end of the first heat exchange tube group 10, the high-temperature and high-pressure refrigerant at the first end of the first heat exchange tube group 10 flows sequentially through the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103 connected in series before flowing out from the second end of the first heat exchange tube group 10. This increases the flow velocity, improves circulation, increases the heat transfer coefficient inside the tubes, and improves heat exchange efficiency. When the refrigerant flows from the second end to the first end of the first heat exchange tube group 10, the low-temperature refrigerant flowing into the second end of the first heat exchange tube group 10 flows to the three heat exchange channels respectively. The three heat exchange channels are arranged in parallel, which increases the flow branches, effectively reduces the pressure drop of the refrigerant along the flow path, and improves heat exchange efficiency.

[0068] Optionally, when the dehumidification valve 20 is a single unit, and the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103 are connected in series, such as... Figures 1 to 3 As shown, the dehumidification valve 20 is located between the first heat exchange channel 101 and the second heat exchange channel 102, or, as... Figures 4 to 6 As shown, the dehumidification valve 20 is located between the second heat exchange channel 102 and the third heat exchange channel 103. When the dehumidification valve 20 is located between the first heat exchange channel 101 and the second heat exchange channel 102, the refrigerant flows from the first end to the second end of the first heat exchange tube assembly. The first heat exchange channel 101 is the condensation and reheat section, and the second heat exchange channel 102 and the third heat exchange channel 103 are the dehumidification sections. In this case, the refrigerant enters the indoor heat exchanger for condensation and heat heating of the air. After being throttled by the dehumidification valve 20, the refrigerant becomes cooler and lower in temperature and pressure, absorbing heat through evaporation while simultaneously cooling and dehumidifying the air. This results in a larger dehumidification area, making it suitable for applications in high-humidity environments.

[0069] Optionally, when the dehumidification valve 20 is located in the fourth pipe 107, the indoor heat exchanger also includes an electric heater, which corresponds to the first heat exchange channel 101 and is used for supplementary heating. The indoor heat exchanger is a variable flow dehumidification heat exchanger with a small condensation reheat area. When the heat is insufficient, the electric heater can be turned on for supplementary heating. At the same time, because the relative humidity is below 95% after the premixing of hot and cold air, the amount of water droplets is greatly reduced. Turning on the electric heater at this time will avoid water droplets directly contacting the electric heater and causing flashing noise.

[0070] When the dehumidification valve 20 is located between the second heat exchange channel 102 and the third heat exchange channel 103, the refrigerant flows from the first end of the first heat exchange tube group to the second end of the first heat exchange tube group. The first heat exchange channel 101 and the second heat exchange channel 102 are condensation and reheat sections, and the third heat exchange channel 103 is a dehumidification section. This results in a smaller dehumidification area and a larger reheat condensation area, which allows for more complete refrigerant condensation. The loss after throttling by the dehumidification valve 20 is also smaller, and the temperature after throttling by the dehumidification valve 20 can be lower, achieving efficient dehumidification.

[0071] Optionally, the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103 have the same area, which improves the uniformity of refrigerant distribution. Furthermore, the dehumidification valve 20 is located between the first heat exchange channel 101 and the second heat exchange channel 102, so the ratio of the area of ​​the condensation reheat section to the area of ​​the dehumidification section is 1 / 2. Conversely, if the dehumidification valve 20 is located between the second heat exchange channel 102 and the third heat exchange channel 103, the ratio of the area of ​​the condensation reheat section to the area of ​​the dehumidification section is 2.

[0072] Optionally, the first heat exchanger tube assembly 10 further includes a first pipe 104, a second pipe 105, a third pipe 106, a fourth pipe 107, and a distributor 30. The first end of the first pipe 104 is adapted to connect to a compressor, and the second end of the first pipe 104 connects to the first end of the first heat exchange channel 101 and the first end of the second heat exchange channel 102. The first end of the second pipe 105 connects to the second end of the first pipe 104 and the first end of the second heat exchange channel 102, and the second end of the second pipe 105 connects to the first end of the third heat exchange channel 103. The first end of the distributor 30 connects to the second end of the first heat exchange channel 101 and the second end of the second heat exchange channel 102, and both the second end of the distributor 30 and the second end of the third heat exchange channel 103 are adapted to connect to a throttling device 50. The third pipe 106 is adapted to connect between the second end of the distributor 30 and the throttling device 50. The fourth pipe 107 connects between the second end of the first heat exchanger and the first end of the distributor 30.

[0073] The flow distribution assembly includes a first valve 301 and a second valve 302. The first valve 301 is located in the first pipeline 104 and is configured to be open when the refrigerant flows from the first end of the second heat exchange channel 102 toward the first end of the second heat exchange channel 102. The second valve 302 is located in the third pipeline 106 and is configured to be open when the refrigerant flows from the throttling device 50 toward the distributor. When the refrigerant flows from the first end of the first heat exchange tube group 10 to the second end of the first heat exchange tube group 10, both the first valve 301 and the second valve 302 are closed, so that the first heat exchange channel 101, the second heat exchange channel 102 and the third heat exchange channel 103 are connected in series. When the refrigerant flows from the second end of the heat exchange tube group to the first end of the heat exchange tube group, both the first valve 301 and the second valve 302 are open, so that the first heat exchange channel 101, the second heat exchange channel 102 and the third heat exchange channel 103 are arranged in parallel.

[0074] In this embodiment of the present disclosure, when the refrigerant flows from the first end of the first heat exchange tube group 10 to the second end of the first heat exchange tube group 10, the first valve 301 and the second valve 302 are closed, so the first pipeline 104 and the third pipeline 106 are not connected. Thus, the high-temperature and high-pressure refrigerant flowing out of the compressor flows into the first heat exchange channel 101 and then into the fourth pipeline 107, and then into the second heat exchange channel 102 from the fourth pipeline 107, and then into the second pipeline 105 from the second heat exchange channel 102, and then into the third heat exchange channel 103 along the second pipeline 105, and then into the second end of the first heat exchange tube group 103, and then into the second end of the first heat exchange tube group 10, and then out of the indoor heat exchanger from the second end of the first heat exchange tube group 10.

[0075] When the refrigerant flows from the second end of the first heat exchange tube group 10 to the first end of the first heat exchange tube group 10, both the first valve 301 and the second valve 302 are open, so both the first pipeline 104 and the third pipeline 106 are open. Thus, the refrigerant throttled by the throttling device 50 flows into the second end of the first heat exchange tube group 10, and then flows to the third heat exchange channel 103 and the distributor 30 respectively. After passing through the distributor 30, it flows to the first heat exchange channel 101 and the second heat exchange channel 102 respectively. Then, the refrigerant from the three heat exchange channels flows out and converges at the first end of the first heat exchange tube group 10 before flowing out of the indoor heat exchanger.

[0076] Optionally, the first valve 301 can be a solenoid valve, a Tesla valve, a ball valve, or a check valve, etc.

[0077] Optionally, the second valve 302 can be a solenoid valve, Tesla valve, ball valve, or check valve, etc.

[0078] Optionally, the dehumidification valve 20 is located in the second pipe 105 or the fourth pipe 107.

[0079] In this embodiment, the dehumidifier 20 is located in the second pipeline 105. When the refrigerant flows from the first end of the first heat exchange tube group to the second end, the first heat exchange channel 101 and the second heat exchange channel 102 are condensation and reheat sections, and the third heat exchange channel 103 is a dehumidification section. When the refrigerant flows from the second end of the first heat exchange tube group to the first end, the dehumidifier 20 can throttle the refrigerant flowing from the third heat exchange channel 103 to the first end of the first heat exchange tube group, further reducing the temperature of the refrigerant. The dehumidifier 20 is located in the fourth pipeline 107. When the refrigerant flows from the first end of the first heat exchange tube group to the second end, the first heat exchange channel 101 is a condensation and reheat section, and the second heat exchange channel 102 and the third heat exchange channel 103 are dehumidification sections. When the refrigerant flows from the second end of the first heat exchange tube group to the first end of the first heat exchange tube group, the dehumidification valve 20 can throttle the refrigerant flowing into the first heat exchange channel 101 to reduce the temperature of the first heat exchange channel 101, so that the heat exchange channels of the first heat exchange tube group 10 have different temperatures, thereby realizing multiple dehumidification functions.

[0080] Optionally, the dehumidification valve 20 includes a capillary tube or an electronic expansion valve.

[0081] Optionally, when the dehumidifier 20 includes a capillary tube, it also includes a first bypass pipe and a first solenoid valve. The first bypass pipe is connected in parallel with the capillary tube, and the first solenoid valve is located in the first bypass pipe. This allows the dehumidifier 20 to switch between throttling and non-throttling functions. When the first solenoid valve is closed, the first bypass pipe is closed, and the refrigerant flows through the capillary tube for throttling, thus achieving the throttling function of the dehumidifier 20. When the first solenoid valve is open, the first bypass pipe is open, and the refrigerant flows through the first bypass pipe without passing through the capillary tube, allowing the dehumidifier 20 to be fully open without throttling, ensuring that the temperature and pressure of the flowing refrigerant remain unchanged.

[0082] Optionally, when the dehumidifier 20 includes an electronic expansion valve, the dehumidifier 20 also includes a second bypass pipe and a second solenoid valve. The second bypass pipe is connected in parallel with the electronic expansion valve, and the second solenoid valve is located in the second bypass pipe. This allows the dehumidifier 20 to switch between throttling and non-throttling functions. When the second solenoid valve is closed, the second bypass pipe is closed, and the refrigerant flows through the electronic expansion valve for throttling, thus achieving the throttling function of the dehumidifier 20. When the second solenoid valve is open, the second bypass pipe is open, and the refrigerant flows through the second bypass pipe without passing through the electronic expansion valve, allowing the dehumidifier 20 to be fully open without throttling, ensuring that the temperature and pressure of the flowing refrigerant remain unchanged.

[0083] Optionally, such as Figures 7 to 9As shown, the first heat exchange tube assembly 10 includes a first heat exchange channel 101, a second heat exchange channel 102, and a third heat exchange channel 103. When there are multiple dehumidification valves 20, the multiple dehumidification valves 20 include a first dehumidification valve 201 and a second dehumidification valve 202. The first dehumidification valve 201 is located in the fourth pipeline 107 and can throttle the refrigerant in the third pipeline 106. The second dehumidification valve 202 is located in the second pipeline 105 and can throttle the refrigerant in the second pipeline 105.

[0084] In this embodiment of the present disclosure, the first heat exchange tube assembly 10 is provided with two dehumidification valves 20, so that... Figure 8 As shown, when the refrigerant flows from the first end to the second end of the first heat exchange tube assembly, the two dehumidification valves 20 are connected in series. This allows the refrigerant flowing out of the first heat exchange channel 101 to be throttled and cooled by the first dehumidification valve 201 before flowing into the second heat exchange channel 102. The refrigerant flowing out of the second heat exchange channel 102 can then be throttled and cooled again by the second dehumidification valve 202 before flowing into the third heat exchange channel 103. This results in different temperatures in the first, second, and third heat exchange channels 101 and 102, enabling more diverse temperature and humidity regulation. It can be understood that the first and second dehumidification valves 201 and 202 can also be either completely unthrottled or one can be throttled while the other is fully open, further increasing the range of temperature and humidity regulation for the indoor heat exchanger and enhancing its versatility.

[0085] Similarly, as Figure 9 As shown, when the refrigerant flows from the second end to the first end of the first heat exchange tube assembly, the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103 are connected in parallel. When the first dehumidification valve 201 is opened for throttling, it can throttle and cool the refrigerant flowing into the first heat exchange channel 101. In this way, the temperature of the first heat exchange channel 101 is lower than the temperature of the second heat exchange channel 102 and the third heat exchange channel 103, which can achieve deep dehumidification. The first dehumidification valve 201 and the second dehumidification valve 202 can also be fully opened without throttling, thus achieving both cooling and dehumidification.

[0086] Optionally, when the dehumidifier 20 includes a capillary tube, the first dehumidifier 201 includes a first capillary tube, and the second dehumidifier 202 includes a second capillary tube, with the length of the first capillary tube being greater than the length of the second capillary tube. Alternatively, when the dehumidifier 20 includes an electronic expansion valve, the first dehumidifier 201 includes a first electronic expansion valve, and the second dehumidifier 202 includes a second electronic expansion valve, with the opening degree of the first electronic expansion valve being smaller than the opening degree of the second electronic expansion valve.

[0087] In this embodiment of the present disclosure, when the refrigerant flows from the first end of the first heat exchange tube group to the second end of the first heat exchange tube group, the first dehumidification valve 201 is close to the first end of the first heat exchange tube group 10, and the second dehumidification valve 202 is located downstream of the first dehumidification valve 201. Therefore, the temperature of the refrigerant flowing into the first dehumidification valve 201 is higher. Thus, the length of the first capillary tube of the first dehumidification valve 201 is greater than the length of the second capillary tube, or the opening degree of the first electronic expansion valve of the first dehumidification valve 201 is smaller than the opening degree of the second electronic expansion valve, which can improve the throttling effect of the first dehumidification valve 201.

[0088] Optionally, such as Figures 13 to 16 As shown, the heat exchanger also includes a liquid receiver 60, which is located upstream of the dehumidification valve 20. Thus, when the refrigerant flows from the first end to the second end of the first heat exchange tube assembly, the indoor heat exchanger operates in reheat dehumidification mode. The liquid receiver 60 can store the liquid refrigerant upstream of the dehumidification valve 20, reducing the proportion of liquid refrigerant in the heat exchanger and increasing the proportion of two-phase refrigerant, thereby improving the efficiency of the heat exchanger. Furthermore, the liquid receiver 60 can reduce the burden on the dehumidification valve 20, providing it with a stable flow of liquid refrigerant and reducing the amount of refrigerant that the dehumidification valve 20 needs to handle.

[0089] Optionally, the liquid storage tank 60 is located on the side of the dehumidification valve 20 facing the first end of the first heat exchange tube assembly 10. In this way, when the refrigerant flows from the first end of the first heat exchange tube assembly to the second end, the high-temperature and high-pressure refrigerant condenses and dissipates heat in the heat exchange channel upstream of the dehumidification valve 20, and the liquid refrigerant can flow into the liquid storage tank 60, and then flow from the liquid storage tank 60 to the dehumidification valve 20. The liquid storage tank 60 can store excess liquid refrigerant.

[0090] Optionally, the liquid storage tank 60 is located between the outlet of the condensing reheat section and the dehumidification valve 20. This ensures that the liquid flowing into the liquid storage tank 60 is the liquid refrigerant after condensation and heat dissipation in the condensing reheat section, thus ensuring the condensation effect.

[0091] Optionally, the heat exchanger also includes a gas-liquid separator 70, which is located on the side of the dehumidification valve 20 facing the second end of the first heat exchange tube group 10. The gas outlet of the gas-liquid separator 70 is adapted to be connected to the throttling device 50, and the liquid outlet of the gas-liquid separator 70 is connected to the first heat exchange tube group 10.

[0092] In this embodiment of the present disclosure, a gas-liquid separator 70 is added downstream of the dehumidification valve 20, that is, after the dehumidification valve 20. When the indoor heat exchanger is in reheat dehumidification mode, the gaseous refrigerant is sent to the outlet of the second end of the indoor heat exchanger, and the liquid refrigerant enters the heat exchange channel. This avoids excess gaseous refrigerant occupying the heat exchanger, reduces the dryness of the refrigerant entering the heat exchanger, improves the heat exchange efficiency, and enhances the dehumidification effect.

[0093] Optionally, when there are multiple dehumidification valves 20, the number of liquid storage tanks 60 is the same as the number of dehumidification valves 20 and corresponds one-to-one. Each dehumidification valve 20 is provided with a corresponding liquid storage tank 60, which can ensure stable throttling of each dehumidification valve 20 and increase the proportion of two-phase refrigerant in the branch where each dehumidification valve 20 is located, thereby improving heat exchange efficiency.

[0094] In some alternative embodiments, such as Figures 10 to 12 As shown, the multiple heat exchange channels also include a second heat exchange tube group 40, which is connected to the first heat exchange tube group 10. A dehumidification valve 20 (hereinafter referred to as the third dehumidification valve 203 for ease of distinction) is located within the second heat exchange tube group 40, or between the first heat exchange tube group 10 and the second heat exchange tube group 40. This valve is used to throttle the refrigerant, ensuring that the temperature of the refrigerant downstream of the third dehumidification valve 203 is lower than the temperature of the refrigerant upstream of the third dehumidification valve 203.

[0095] In this embodiment, the first heat exchange tube group 10 is equipped with a flow-dividing component. This allows the first heat exchange tube group 10 to achieve multiple evaporation paths and fewer condensation paths during cooling and heating switching, thereby improving the energy efficiency of the air conditioner. Furthermore, a third dehumidification valve 203 is provided within the second heat exchange tube group 40 or between the first and second heat exchange tube groups 10. This allows the first and second heat exchange tube groups 10 and 40 to form different temperature ranges through the third dehumidification valve 203, thus achieving dehumidification. In this way, the air conditioner can maintain energy efficiency while dehumidifying and switching between cooling and heating modes.

[0096] Optionally, the heat exchange tube assembly further includes a connecting pipe 402, which connects the second end of the first heat exchange tube assembly 10 and the first end of the second heat exchange tube assembly 40, wherein the third dehumidification valve 203 is disposed in the connecting pipe 402.

[0097] In this embodiment of the present disclosure, the third dehumidification valve 203 is provided in the connecting pipe 402. The third dehumidification valve 203 can throttle the refrigerant flowing from the first heat exchange tube group 10 to the second heat exchange tube group 40, and can also throttle the refrigerant flowing from the second heat exchange tube group 40 to the first heat exchange tube group 10.

[0098] Optionally, multiple third dehumidification valves are connected in parallel in the connecting pipeline. This allows for the selective opening of one or more third dehumidification valves to throttle the flow, adjust the throttling effect, achieve different temperatures, and thus regulate the cooling and dehumidification effects.

[0099] Optionally, the first end of the first heat exchanger tube assembly 10 is adapted to be connected to the compressor, the first end of the second heat exchanger tube assembly 40 is connected to the second end of the first heat exchanger assembly 10, and the second end of the second heat exchanger tube assembly 40 is adapted to be connected to the outdoor unit.

[0100] In this embodiment, when the refrigerant flows from the first end of the first heat exchanger assembly to the second end, the high-temperature refrigerant flows from the first heat exchanger assembly 10 into the second heat exchanger assembly 40. Specifically, the high-temperature refrigerant flows sequentially through multiple heat exchange channels connected in series in the first heat exchanger assembly 10, and then can be throttled and cooled by the dehumidification valve 20 before flowing into the second heat exchanger assembly 40, and then from the second heat exchanger assembly 40 to the outdoor unit. In this way, the temperature of the first heat exchanger assembly 10 is higher than that of the second heat exchanger assembly 40, and the airflow can flow through the first heat exchanger assembly 10 first and then through the second heat exchanger assembly 40, or flow through the second heat exchanger assembly 40 first and then through the first heat exchanger assembly 10. This not only achieves reheat dehumidification, but also does not affect the refrigerant flow in the first heat exchanger assembly 10, ensuring the condensation effect and the normal operation of the air conditioner.

[0101] The refrigerant flows from the second heat exchanger tube group 40 to the first heat exchanger tube group 10. The refrigerant flowing out of the second heat exchanger tube group 40 is throttled by the dehumidification valve 20 and then flows into the first heat exchanger tube group 10. In this way, the temperature of the second heat exchanger tube group 40 is greater than the temperature of the first heat exchanger tube group 10, so the first heat exchanger tube group 10 is the refrigeration and dehumidification section.

[0102] Optionally, when the indoor heat exchanger includes a third dehumidification valve, the indoor heat exchanger may also include a first dehumidification valve and / or a second dehumidification valve. It can be understood that the third dehumidification valve can be a throttling device for the air conditioning system.

[0103] Optionally, when the indoor heat exchanger includes a first dehumidification valve and a third dehumidification valve, when the refrigerant flows from the first end of the heat exchange tube assembly to the second end, the first dehumidification valve can be fully open without throttling, or it can be open with throttling. When the first dehumidification valve is fully open without throttling, and the third dehumidification valve is throttling, the section between the third dehumidification valve and the first end of the indoor heat exchanger is a condensation reheat section, and the section between the third dehumidification valve and the second end of the indoor heat exchanger is a dehumidification section. When both the first and third dehumidification valves are open with throttling, the indoor heat exchanger forms three different temperatures along the refrigerant flow direction. In this way, when the airflow flows from the first heat exchange tube assembly to the second heat exchange tube assembly, it can be reheated first, and then undergo two refrigeration dehumidification processes to achieve deep dehumidification through reheating. When the refrigerant flows from the second end of the heat exchanger tube assembly to the first end, the first dehumidification valve is fully open and does not throttle, while the third dehumidification valve is a throttling device. The refrigerant flowing out of the outdoor unit flows into the fourth heat exchange section for condensation and heat dissipation, then flows into the third dehumidification valve for throttling before flowing back into the first heat exchanger tube assembly. In this way, when the airflow flows from the first heat exchanger tube assembly to the second heat exchanger tube assembly, cooling, dehumidification, and reheating can be achieved. When both the first and third dehumidification valves are throttling, the first heat exchanger tube assembly has two different temperatures, enabling deep cooling, dehumidification, and reheating.

[0104] It can be understood that the indoor heat exchanger includes a second dehumidification valve and a third dehumidification valve, and its working principle is the same as that of the indoor heat exchanger, which includes a first dehumidification valve and a third dehumidification valve, so it will not be described again here.

[0105] Optionally, the indoor heat exchanger includes a first dehumidification valve, a second dehumidification valve, and a third dehumidification valve. The first dehumidification valve 201 and the second dehumidification valve 202 are fully open without throttling. The airflow can then pass through the third dehumidification valve 203 for throttling and cooling before flowing into the second heat exchanger tube assembly 40, and then from the second heat exchanger tube assembly 40 to the outdoor unit. In this way, the temperature of the first heat exchanger tube assembly 10 is higher than that of the second heat exchanger tube assembly 40. The airflow can either flow through the first heat exchanger tube assembly 10 first and then through the second heat exchanger tube assembly 40, or vice versa. This not only achieves reheat dehumidification but also does not affect the refrigerant flow within the first heat exchanger tube assembly 10, ensuring condensation efficiency and the normal operation of the air conditioner. When the refrigerant flows from the first end of the first heat exchanger tube group to the second end of the first heat exchanger tube group, at least one of the first dehumidification valve and the second dehumidification valve can be opened for throttling. In this way, the high-temperature refrigerant flows out of the indoor heat exchanger after multiple throttlings, which allows multiple different temperature ranges to be formed in the first heat exchanger tube group. The temperature of the second heat exchanger tube group is also lower than the temperature of the first heat exchanger tube group, thereby achieving deep dehumidification while heating.

[0106] Refrigerant flows from the second heat exchanger tube group 40 to the first heat exchanger tube group 10. The refrigerant flowing out of the second heat exchanger tube group 40 is throttled by the third dehumidification valve 203 before flowing back into the first heat exchanger tube group 10. Both the first and second dehumidification valves are fully open without throttling. This results in a higher temperature in the second heat exchanger tube group 40 than in the first heat exchanger tube group 10. Thus, the first heat exchanger tube group 10 acts as the cooling and dehumidification section, while the second heat exchanger tube group 40 acts as the heating section, achieving cooling, dehumidification, and reheating. It can be understood that at least one of the first and second dehumidification valves can also be open for throttling, allowing for deep cooling followed by reheating.

[0107] Optionally, a heat exchange channel may include one or more heat exchange sections. When a heat exchange channel includes multiple heat exchange ends, the multiple heat exchange sections may be connected in parallel or in series. This ensures the performance requirements of the indoor heat exchanger under different operating modes. The heat exchange sections include fins and copper tubes.

[0108] Optionally, the indoor unit includes an indoor heat exchanger, a casing, and a fan. The casing defines a receiving cavity with an air inlet and an air outlet, and the indoor heat exchanger is located within the receiving cavity. The fan is located within the receiving cavity and can drive airflow sequentially through the first heat exchange channel 101, the second heat exchange channel 102, and the third heat exchange channel 103. This allows the airflow passing through the indoor heat exchanger to regulate the temperature while dehumidifying, meeting different temperature regulation requirements. Thus, when the refrigerant flows from the first end to the second end of the heat exchanger, the heat exchanger can perform reheat dehumidification. When the refrigerant flows from the second end to the first end of the heat exchanger, the heat exchanger can perform cooling or deep dehumidification.

[0109] Optionally, when the indoor heat exchanger includes a fourth heat exchange channel 104, the fan can drive airflow to sequentially pass through the first heat exchange channel 101, the second heat exchange channel 102, the third heat exchange channel 103, and the fourth heat exchange channel 104. Thus, when the refrigerant flows from the first end to the second end of the heat exchanger, the heat exchanger can achieve reheat dehumidification. When the refrigerant flows from the second end to the first end of the heat exchanger, the heat exchanger can achieve cooling, dehumidification, and reheat.

[0110] Optionally, the air conditioner also includes a controller, which is electrically connected to the dehumidification valve and other components of the air conditioner. The controller can control the opening degree of the dehumidification valve and the operation of other components of the air conditioner.

[0111] Optionally, the air conditioner also includes a first detection device for detecting indoor temperature and humidity. The first detection device is electrically connected to a controller, which controls the operation of the dehumidification valve and other components of the air conditioner based on the indoor temperature and humidity. Optionally, the air conditioner also includes a second detection device, the number of which corresponds one-to-one with the number of heat exchange channels, for detecting the temperature of each heat exchange channel.

[0112] The first end of the indoor heat exchanger is the first end of the first heat exchange tube assembly, and the second end of the indoor heat exchanger is the second end of the first heat exchange tube assembly. When the indoor heat exchanger includes a second heat exchange tube assembly, the second end of the indoor heat exchanger is the second end of the second heat exchange tube assembly. The air conditioner controls the operation of the four-way valve to switch the refrigerant flow direction in the refrigerant circuit, thereby changing the refrigerant flow direction in the indoor heat exchanger.

[0113] Optionally, such as Figure 17 As shown in the embodiments of this disclosure, a control method for an air conditioner is also provided, including:

[0114] S11. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0115] S12. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0116] S13. The air conditioner controls the operation of the indoor unit's fan or the opening degree of the dehumidification valve based on the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0117] In this embodiment, when the air conditioner is operating in dehumidification mode, it acquires the initial indoor humidity. When the indoor humidity is high, the air conditioner controls the dehumidification valve to reduce its opening. This improves the throttling effect of the dehumidification valve, thereby reducing the temperature of the downstream heat exchange channel and improving the dehumidification effect. After reducing the opening of the dehumidification valve, the coil temperature of the downstream heat exchange channel is acquired. Based on the coil temperature, the dehumidification and temperature control effects of the heat exchanger can be determined. If the coil temperature is unsuitable, the opening of the dehumidification valve and the operation of the indoor unit's fan are further controlled to adjust the downstream temperature. This allows for more precise temperature control of the heat exchanger, simultaneously meeting the user's temperature and humidity requirements.

[0118] Optionally, such as Figure 18 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0119] S21. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0120] S22. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0121] S23. When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the first temperature threshold, the fan speed of the indoor unit of the air conditioner is reduced.

[0122] In this embodiment of the disclosure, when the dehumidification valve reduces its opening, but the coil temperature of the heat exchange channel downstream of the dehumidification valve is still greater than the first temperature threshold, the dehumidification effect of the indoor heat exchanger is limited. At this time, the fan speed of the indoor unit is reduced, thereby reducing the heat exchange efficiency between the heat exchange channel downstream of the dehumidification valve and the indoor air, thus slowing down the heating rate of the heat exchange channel downstream of the dehumidification valve, and further reducing the temperature of the refrigerant in the heat exchange channel downstream of the dehumidification valve.

[0123] Optional, location selection, such as Figure 19 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0124] S31. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0125] S32. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0126] S33. When the coil temperature in the heat exchange channel downstream of the dehumidifier is less than or equal to the second temperature threshold, the air conditioning controls the dehumidifier to increase its opening, and the second temperature threshold is less than the first temperature threshold.

[0127] In this embodiment, when the temperature of the coil in the heat exchange channel downstream of the dehumidifier valve is too low, the low temperature of the heat exchanger will lower the indoor temperature and affect the user's temperature requirements. At this time, the air conditioner controls the dehumidifier valve to increase its opening, reduce the throttling effect, and thereby increase the temperature of the heat exchange channel downstream of the dehumidifier valve to prevent the temperature from becoming too low.

[0128] Optionally, such as Figure 20 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0129] S41. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0130] S42. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0131] S43. When the coil temperature in the heat exchange channel downstream of the dehumidifier is less than or equal to the second temperature threshold, the air conditioning controls the dehumidifier to increase its opening, and the second temperature threshold is less than the first temperature threshold.

[0132] S44. When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the second temperature threshold and less than the first temperature threshold, the air conditioner obtains the second humidity level in the room.

[0133] S45. Based on the indoor humidity level, the air conditioner controls the operation of the outdoor unit's fan or the opening of the dehumidification valve.

[0134] In this embodiment, when the coil temperature in the heat exchange channel downstream of the dehumidifier valve is less than or equal to a second temperature threshold, the air conditioner controls the dehumidifier valve to increase its opening. This reduces the throttling effect and increases the temperature of the coil in the heat exchange channel downstream of the dehumidifier valve. When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the second temperature threshold but less than the first temperature threshold, it indicates that the coil temperature in the heat exchange channel downstream of the dehumidifier valve has reached the desired temperature range. At this point, the second indoor humidity is obtained, and the dehumidifier section or the outdoor unit's fan is further adjusted based on the indoor humidity to ensure stable system operation.

[0135] Optionally, such as Figure 21 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0136] S51. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0137] S52. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0138] S53. When the coil temperature in the heat exchange channel downstream of the dehumidifier is less than or equal to the second temperature threshold, the air conditioning controls the dehumidifier to increase its opening, and the second temperature threshold is less than the first temperature threshold.

[0139] S54. When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the second temperature threshold and less than the first temperature threshold, the air conditioner obtains the second humidity level in the room.

[0140] S55. When the difference between the indoor second humidity and the preset humidity is less than the second humidity threshold, the air conditioner obtains the coil temperature of the outdoor heat exchanger, and the second humidity threshold is less than the first humidity threshold.

[0141] S56. When the coil temperature of the outdoor heat exchanger is lower than the frosting temperature threshold, the air conditioner controls the outdoor unit's fan speed to decrease.

[0142] In this embodiment, when the indoor humidity is less than or equal to the second humidity threshold, it indicates that the dehumidification effect is significant, the indoor humidity is reduced, and the desired humidity range is reached. At this point, the coil temperature of the outdoor heat exchanger is acquired to determine its operating status, and the outdoor unit's fan is controlled to ensure the normal operation of the air conditioning system. When the coil temperature of the outdoor heat exchanger is less than the frosting temperature threshold, it indicates a risk of frosting. In this case, the air conditioner controls the outdoor unit's fan to reduce its speed, thereby reducing the evaporation effect of the outdoor heat exchanger, preventing excessively rapid heat exchange, retaining heat, and preventing the outdoor heat exchanger from becoming too cold and frosting.

[0143] Optionally, the first temperature threshold can be 9.5℃, 10℃, 10.5℃, 11℃, 12℃, etc. Optionally, the second temperature threshold can be 4℃, 4.5℃, 5℃, 5.5℃, 6℃, etc. Optionally, the first humidity threshold can be 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, or 22%, etc. Optionally, the second humidity threshold can be 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, etc.

[0144] Optionally, such as Figure 22 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0145] S61. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0146] S62. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0147] S63. When the coil temperature in the heat exchange channel downstream of the dehumidifier is less than or equal to the second temperature threshold, the air conditioning controls the dehumidifier to increase its opening, and the second temperature threshold is less than the first temperature threshold.

[0148] S64. When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the second temperature threshold and less than the first temperature threshold, the air conditioner obtains the second humidity of the room.

[0149] S65. When the difference between the indoor second humidity and the preset humidity is less than the second humidity threshold, the air conditioner obtains the coil temperature of the outdoor heat exchanger.

[0150] S66. When the coil temperature of the outdoor heat exchanger is lower than the frosting temperature threshold, the air conditioner controls the outdoor unit's fan speed to decrease.

[0151] S67. When the coil temperature of the outdoor heat exchanger is greater than or equal to the frosting temperature threshold, control the air conditioner to exit the dehumidification mode.

[0152] In this embodiment of the disclosure, when the coil temperature of the outdoor heat exchanger is high and there is no risk of frosting, the air conditioner exits the dehumidification mode, thereby ensuring the air conditioner maintains its temperature control effect and reduces energy consumption. Optionally, the frosting temperature threshold can be 0°C.

[0153] Optionally, exiting dehumidification mode for the air conditioner includes fully opening the dehumidification valve without throttling.

[0154] Optionally, such as Figure 23 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0155] S71. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0156] S72. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0157] S73. When the coil temperature in the heat exchange channel downstream of the dehumidifier is less than or equal to the second temperature threshold, the air conditioning controls the dehumidifier to increase its opening, and the second temperature threshold is less than the first temperature threshold.

[0158] S74. When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the second temperature threshold and less than the first temperature threshold, the air conditioner obtains the second humidity level in the room.

[0159] S75. When the difference between the second humidity and the preset humidity in the room is greater than the second humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening until the difference between the real-time humidity and the preset humidity in the room is less than or equal to the second humidity threshold.

[0160] In this embodiment of the present disclosure, when the temperature of the coil in the heat exchange channel downstream of the dehumidification valve reaches the target temperature range, but the indoor humidity is still high, the air conditioner can further reduce the opening of the dehumidification valve to further reduce the temperature of the heat exchange channel downstream of the dehumidification valve until the difference between the real-time indoor humidity and the preset humidity is less than or equal to the second humidity threshold. Then the air conditioner will detect the coil temperature of the outdoor heat exchanger to prevent the outdoor heat exchanger from frosting.

[0161] Optionally, such as Figure 24 As shown in the embodiments of this disclosure, another control method for an air conditioner is also provided, including:

[0162] S81, The air conditioner obtains the indoor temperature.

[0163] S82. When the difference between the indoor temperature and the set temperature is greater than the preset difference, the air conditioner will operate in rapid cooling mode.

[0164] S83. When the difference between the indoor temperature and the set temperature is less than or equal to the preset difference, the air conditioner operates in dehumidification mode.

[0165] S84. When the air conditioner is in dehumidification mode, it obtains the first humidity level in the room.

[0166] S85. When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the air conditioner controls the dehumidification valve to reduce its opening and obtains the coil temperature of the heat exchange channel downstream of the dehumidification valve.

[0167] S86. Based on the coil temperature of the heat exchange channel downstream of the dehumidifier valve, the air conditioner controls the operation of the indoor unit's fan or the opening degree of the dehumidifier valve.

[0168] In this embodiment of the present disclosure, before humidity detection, the indoor temperature is first obtained. When the difference between the indoor temperature and the set temperature is large, the air conditioner first runs the rapid cooling mode to prioritize temperature adjustment. When the temperature is adjusted to a suitable range, the air conditioner then runs the dehumidification mode.

[0169] Optionally, when the dehumidification valve includes multiple dehumidification valves, the downstream of the dehumidification valve refers to the downstream of each dehumidification valve.

[0170] Optionally, when the dehumidification valve includes a first dehumidification valve and a second dehumidification valve, during dehumidification mode operation, after obtaining the initial indoor humidity, the method for controlling the air conditioner further includes: controlling the opening degree of the first and second dehumidification valves and the refrigerant flow direction of the indoor heat exchanger based on the indoor temperature and humidity. This allows the indoor heat exchanger to form different temperature ranges, thereby achieving different dehumidification and temperature regulation effects. Furthermore, adjusting the refrigerant flow direction according to changes in temperature and humidity further increases the temperature range of the indoor heat exchanger, thereby improving the temperature and humidity regulation effects.

[0171] Optionally, when the indoor temperature is greater than or equal to the fifth temperature threshold and the indoor humidity is less than the fifth humidity threshold, the air conditioner controls the refrigerant in the indoor heat exchanger to flow from the second end of the indoor heat exchanger to the first end, and controls the first and second dehumidification valves to be fully open. In this way, the indoor heat exchanger uses refrigerant throttled by the throttling device, and with the first and second dehumidification valves fully open, the first and second dehumidification valves do not throttle, thus achieving dehumidification while cooling.

[0172] Optionally, when the indoor temperature is greater than or equal to a fifth temperature threshold and the indoor humidity is greater than or equal to a fifth humidity threshold, the air conditioner controls the refrigerant in the indoor heat exchanger to flow from the second end of the indoor heat exchanger to the first end, and controls the first dehumidification valve to open to a first preset opening degree, and controls the second dehumidification valve to fully open. This enables deep dehumidification of the airflow, improving the dehumidification effect while ensuring the cooling temperature.

[0173] Optionally, when the indoor temperature is greater than or equal to the sixth temperature threshold and less than the fifth temperature threshold, and the indoor humidity is greater than or equal to the sixth humidity threshold, the air conditioner controls the refrigerant in the indoor heat exchanger to flow from the first end of the indoor heat exchanger to the second end, controls the first dehumidification valve to open to the second preset opening degree, and controls the second dehumidification valve and the throttling device to be fully open. In this way, the refrigerant throttled by the first dehumidification valve can exchange heat in the second and third heat exchange channels and then flow back into the outdoor heat exchanger of the outdoor unit to achieve refrigerant circulation.

[0174] Optionally, after the air conditioner controls the opening degree of the first dehumidification valve and the second dehumidification valve and the refrigerant flow direction of the indoor heat exchanger, the method further includes: obtaining the temperature of the condensing reheat section, and / or obtaining the compressor's discharge temperature and / or return gas temperature.

[0175] When the temperature in the condensing reheat section is greater than or equal to the first preset temperature, the air conditioner controls the indoor unit's fan to increase its speed; when the compressor's exhaust temperature is greater than or equal to the second preset temperature and / or the compressor's return gas temperature is greater than the third preset temperature, the air conditioner controls the outdoor unit's fan to decrease its speed. This reduces system pressure, improves the heat dissipation effect of the condensing heat dissipation section, and ensures stable system operation.

[0176] Combination Figure 25 As shown, this embodiment of the present disclosure provides a device 90 for controlling an air conditioner, including a processor 900 and a memory 901. Optionally, the device 90 may further include a communication interface 902 and a bus 903. The processor 900, communication interface 902, and memory 901 can communicate with each other via the bus 903. The communication interface 902 can be used for information transmission. The processor 900 can call logical instructions in the memory 901 to execute the method for controlling the air conditioner described in the above embodiment.

[0177] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0178] The memory 901, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 900 executes functional applications and data processing by running the program instructions / modules stored in the memory 901, thereby implementing the method for controlling the air conditioner described in the above embodiments.

[0179] The memory 901 may include a program storage area and a data storage area. The program storage area may store the operating system and application programs required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 901 may include high-speed random access memory and may also include non-volatile memory.

[0180] Combination Figure 7 As shown, this disclosure provides an air conditioner, which includes an air conditioner body and the aforementioned device 90 for controlling the air conditioner. The device 90 for controlling the air conditioner is installed in the air conditioner body. The installation relationship described herein is not limited to placement inside the air conditioner body, but also includes installation connections with other components of the air conditioner body, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 90 for controlling the air conditioner can be adapted to any feasible air conditioner body, thereby realizing other feasible embodiments.

[0181] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioner.

[0182] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and other media capable of storing program code.

[0183] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0184] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0185] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0186] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling an air conditioner, characterized in that, An air conditioner includes an indoor unit, which includes an indoor heat exchanger. The indoor heat exchanger includes multiple heat exchange channels and a dehumidification valve. The dehumidification valve is located between two adjacent heat exchange channels. The dehumidification valve can throttle the refrigerant to make the refrigerant temperature downstream of the dehumidification valve lower than the refrigerant temperature upstream of the dehumidification valve. Methods include: When running dehumidification mode, obtain the initial indoor humidity level; When the indoor humidity is greater than the preset humidity, and the difference between the indoor humidity and the preset humidity is greater than or equal to the first humidity threshold, the dehumidification valve is controlled to reduce its opening and the coil temperature of the heat exchange channel downstream of the dehumidification valve is obtained. The operation of the indoor unit's fan is controlled based on the coil temperature of the heat exchange channel downstream of the dehumidifier valve, or the dehumidifier valve is controlled to increase its opening degree when the coil temperature of the heat exchange channel downstream of the dehumidifier valve is less than or equal to the second temperature threshold. The method also includes: When the coil temperature in the heat exchange channel downstream of the dehumidifier valve is greater than the second temperature threshold and less than the first temperature threshold, the second humidity in the room is obtained. Based on the indoor secondary humidity, control the operation of the outdoor unit's fan or the opening of the dehumidification valve; based on the indoor secondary humidity, control the operation of the outdoor unit's fan, including: When the difference between the indoor second humidity and the preset humidity is less than or equal to the second humidity threshold, the coil temperature of the outdoor heat exchanger is obtained. When the coil temperature of the outdoor heat exchanger is lower than the frosting temperature threshold, the fan speed of the outdoor unit is reduced, and the second humidity threshold is lower than the first humidity threshold.

2. The method for controlling an air conditioner according to claim 1, characterized in that, Based on the coil temperature in the heat exchange channel downstream of the dehumidifier valve, the indoor unit's fan is controlled, including: If the coil temperature in the heat exchange channel downstream of the dehumidifier valve exceeds the first temperature threshold, the fan speed of the indoor unit will be reduced.

3. The method for controlling an air conditioner according to claim 1, characterized in that, Also includes: When the temperature of the outdoor heat exchanger coil is greater than or equal to the frosting temperature threshold, the air conditioner will exit dehumidification mode.

4. The method for controlling an air conditioner according to claim 1, characterized in that, Based on the second humidity level in the room, control the opening degree of the dehumidifier valve, including: If the difference between the second humidity and the preset humidity in the room is greater than the second humidity threshold, the dehumidification valve is controlled to reduce its opening until the difference between the real-time humidity and the preset humidity in the room is less than or equal to the second humidity threshold, and the second humidity threshold is less than the first humidity threshold.

5. The method for controlling an air conditioner according to any one of claims 1 to 4, characterized in that, Before running the dehumidification mode, the method also includes: Obtain the indoor temperature; When the difference between the indoor temperature and the set temperature is less than or equal to the preset difference, the dehumidification mode will be activated. When the difference between the indoor temperature and the set temperature is greater than the preset difference, the rapid cooling mode will be activated.

6. A device for controlling an air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when running the program instructions, the method for controlling an air conditioner as described in any one of claims 1 to 5.

7. An air conditioner, characterized in that, include: Air conditioner unit; The device for controlling an air conditioner as described in claim 6 is installed on the air conditioner body.

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