Dehumidification method and device for air conditioner, air conditioner and computer readable storage medium

Abstract

The invention relates to the technical field of intelligent household appliances, and discloses a dehumidification method for an air conditioner, which comprises the following steps: responding to a reheating dehumidification instruction of the air conditioner, and acquiring an indoor environment temperature; according to the indoor environment temperature, a target operation mode of reheating dehumidification is determined; according to the target operation mode, the state of an outdoor heat exchanger and operation parameters of an indoor unit are controlled; wherein the target operation mode comprises reheating dehumidification mainly including dehumidification and reheating dehumidification mainly including heating. According to the method, the state of the outdoor heat exchanger can be controlled according to the target operation mode, cold / heat energy can be fully utilized during reheating dehumidification, and effective adjustment of the indoor temperature is achieved. Therefore, the temperature adjusting effect is improved, and the requirement of a user for the indoor temperature is met. The invention further discloses a dehumidification device for the air conditioner, the air conditioner and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, for example, to a method and device for dehumidifying an air conditioner, an air conditioner, and a computer-readable storage medium. Background Art

[0002] Existing air conditioners will significantly lower the indoor temperature when dehumidifying the room. This will significantly reduce the user's perceived temperature during the rainy season at the end of the season and when the south wind returns to the south, causing discomfort to the user.

[0003] Related technology discloses a heat exchange system, including a compressor, a four-way valve, an outdoor heat exchanger and a first indoor heat exchanger, and also includes: a second indoor heat exchanger; a first indoor connecting pipe, arranged between the first indoor heat exchanger and the second indoor heat exchanger, and the first indoor connecting pipe is provided with a first indoor expansion valve; and a three-way valve, wherein the compressor includes a first air intake port and a second air intake port, the first air intake port is connected to the four-way valve, and the three-way valve is respectively connected to the second indoor heat exchanger, the air outlet of the compressor, and the second air intake port, so that the heat exchange system forms a first refrigerant circulation flow path connected by the air outlet of the compressor, the first indoor heat exchanger, the first indoor expansion valve, the second indoor heat exchanger, the three-way valve, and the second air intake port.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] In the related art, when dehumidifying the indoor environment, the dehumidified air is reheated and heated; however, during the reheat dehumidification process, the temperature is increased or decreased by adjusting the opening of the indoor expansion valve; the effect of this adjustment method is average.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a dehumidification method and device for an air conditioner, an air conditioner, and a computer-readable storage medium, which improve the temperature regulation effect during the reheat dehumidification process to meet the user's demand for indoor temperature.

[0009] In some embodiments, the method comprises:

[0010] Respond to the reheat dehumidification instruction of the air conditioner and obtain the indoor ambient temperature; determine the target operation mode of reheat dehumidification according to the indoor ambient temperature; control the state of the outdoor heat exchanger and the state of the indoor unit according to the target operation mode; wherein the target operation mode includes reheat dehumidification mainly for dehumidification and reheat dehumidification mainly for heating.

[0011] In some embodiments, the apparatus includes: a processor and a memory storing program instructions, wherein the processor is configured to execute the aforementioned dehumidification method for air conditioning when running the program instructions.

[0012] In some embodiments, the air conditioner comprises:

[0013] A compressor, including a medium-pressure cylinder and a low-pressure cylinder; a four-way valve, connected to the exhaust pipe of the compressor and to the suction pipe of the medium-pressure cylinder; a three-way valve, connected to the exhaust pipe of the compressor and to the suction pipe of the low-pressure cylinder; an outdoor heat exchanger, one end of which is connected to the exhaust pipe of the compressor through the four-way valve; an indoor heat exchanger, including one or more groups, each group of indoor heat exchangers includes a first indoor heat exchanger and a second indoor heat exchanger connected in parallel; and one end of the first indoor heat exchanger is connected to the suction pipe of the low-pressure cylinder through the three-way valve, and one end of the second indoor heat exchanger is connected to the suction pipe of the medium-pressure cylinder through the four-way valve; the other ends of the first indoor heat exchanger and the second indoor heat exchanger are connected to the other end of the outdoor heat exchanger through the first throttle valve and the second throttle valve respectively; and a dehumidification device for air conditioning as mentioned above, electrically connected to the first throttle valve, the second throttle valve, the compressor, the four-way valve and the three-way valve.

[0014] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are executed, the computer is used to execute the dehumidification method for air conditioning as described above.

[0015] The dehumidification method and apparatus for an air conditioner, an air conditioner, and a computer-readable storage medium provided in the embodiments of the present disclosure can achieve the following technical effects:

[0016] In this disclosed embodiment, a target reheat dehumidification operating mode is determined based on the indoor ambient temperature. This ensures that when the air conditioner performs reheat dehumidification in this target operating mode, the indoor ambient temperature meets the user's needs. Controlling the outdoor heat exchanger's state and the indoor unit's operating parameters based on the target operating mode helps fully utilize cooling and heating energy during reheat dehumidification, effectively regulating the indoor temperature. This improves temperature regulation and satisfies the user's desired indoor temperature.

[0017] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0019] Figure 1 is a structural diagram of an air conditioner provided by an embodiment of the present disclosure;

[0020] Figure 2 This is a schematic diagram of the refrigerant flow direction of an air conditioner provided by an embodiment of the present disclosure in a dehumidification-based reheat dehumidification mode;

[0021] Figure 3 This is a schematic diagram of the refrigerant flow direction of an air conditioner provided by an embodiment of the present disclosure in a reheat dehumidification mode with heating as the main mode;

[0022] Figure 4 is a schematic diagram of a dehumidification method for air conditioning provided by an embodiment of the present disclosure;

[0023] Figure 5 is a schematic diagram of controlling operating parameters of an indoor unit of an air conditioner in a dehumidification-based reheat dehumidification mode in a method provided by an embodiment of the present disclosure;

[0024] Figure 6 1 is a schematic diagram of controlling operating parameters of an indoor unit of an air conditioner in a heating-dominated reheat dehumidification mode in a method provided by an embodiment of the present disclosure;

[0025] Figure 7 is a schematic diagram of a dehumidification device for air conditioning provided by an embodiment of the present disclosure;

[0026] Figure 8 It is a structural diagram of another air conditioner provided by an embodiment of the present disclosure.

[0027] Reference numerals:

[0028] 10: Compressor; 11: Low-pressure cylinder; 12: Medium-pressure cylinder; 13: One-way valve; 21: Four-way valve; 22: Three-way valve; 23: Outdoor throttle valve; 30: Outdoor heat exchanger; 40: Indoor heat exchanger; 401: First indoor heat exchanger; 402: Second indoor heat exchanger; 50: Throttle valve; 501: First; 502: Second; V2: Control valve; 100: Dehumidification device for air conditioning; 101: Processor; 102: Memory; 103: Communication interface; 104: Bus; 200: Air conditioning. DETAILED DESCRIPTION

[0029] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0030] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0031] Unless otherwise stated, the term "plurality" means two or more.

[0032] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0033] 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.

[0034] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0035] Combine Figure 1-3As shown, an embodiment of the present disclosure provides an air conditioner, comprising: a compressor 10, a four-way valve 21, a three-way valve 22, an outdoor heat exchanger 30, an indoor heat exchanger 40, and a throttle valve 50. The compressor 10 comprises a low-pressure cylinder 11 and an intermediate-pressure cylinder 12. The four-way valve 21 is connected to the exhaust line of the compressor 10 and to the intake line of the intermediate-pressure cylinder 12. The three-way valve 22 is connected to the exhaust line of the compressor 10 and to the intake line of the low-pressure cylinder 11. The outdoor heat exchanger 30 is connected to the four-way valve 21 and the exhaust line of the compressor 10. The indoor heat exchanger 40 includes one or more groups, each group of indoor heat exchangers includes a first indoor heat exchanger 401 and a second indoor heat exchanger 402 connected in parallel; and one end of the second indoor heat exchanger 402 is connected to the suction pipe of the medium pressure cylinder 12 and the exhaust pipe of the compressor through a four-way valve 21, and one end of the first indoor heat exchanger 401 is connected to the exhaust pipe of the compressor through a three-way valve 22; the other ends of the first indoor heat exchanger 401 and the second indoor heat exchanger 402 are connected to the outdoor heat exchanger 30 through a first throttle valve 501 and a second throttle valve 502 respectively.

[0036] The disclosed embodiment adopts a compressor with double suction and single exhaust, in which two cylinders are independently set up, each cylinder has its own suction port, and each cylinder compresses independently, but the cylinder speed is the same. During reheat dehumidification, the second indoor heat exchanger is the evaporator and the first indoor heat exchanger is the condenser. That is, the high-temperature gaseous refrigerant discharged by the compressor flows into the first indoor heat exchanger through the three-way valve, and then flows into the second indoor heat exchanger after passing through the throttle valve, and finally flows back to the medium-pressure cylinder and the low-pressure cylinder through the suction pipe (that is, for reheat dehumidification mainly for heating, the refrigerant flow direction is shown in FIG. Figure 2 Alternatively, the high-temperature gaseous refrigerant discharged from the compressor flows into the first indoor heat exchanger through a three-way valve, and flows into the outdoor heat exchanger through a four-way valve. The two refrigerants merge and then flow into the second indoor heat exchanger through a throttle valve, and finally flow back to the intermediate pressure cylinder and the low pressure cylinder through the suction pipe (i.e., reheat dehumidification mainly for cooling, see the refrigerant flow direction). Figure 3 The air from the air conditioner's indoor unit passes through the second indoor heat exchanger and then the first indoor heat exchanger before being delivered to the indoor space. The second indoor heat exchanger dehumidifies the air, while the first indoor heat exchanger reheats the dehumidified air.

[0037] During the above-mentioned reheat dehumidification process, the high-temperature gaseous refrigerant may or may not flow through the outdoor heat exchanger (the outdoor heat exchanger is in a conducting working state or in a cut-off non-working state). The state of the outdoor heat exchanger depends on the user's demand for the indoor ambient temperature. As an example, during the plum rain season or the summer rainy season, the user hopes that the indoor temperature is relatively low. At this time, the outdoor heat exchanger is activated, thereby reducing the refrigerant flow of the first indoor heat exchanger and lowering the reheat temperature. During the spring and autumn rainy seasons, the user prefers a relatively high indoor temperature. At this time, the outdoor heat exchanger is not activated, thereby increasing the reheat temperature.

[0038] Combine Figure 4 As shown, the embodiment of the present disclosure provides a dehumidification method for air conditioning, comprising:

[0039] S101: The processor responds to the reheating and dehumidification instruction of the air conditioner and obtains the indoor ambient temperature.

[0040] S102: The processor determines a target operation mode of reheat dehumidification according to the indoor ambient temperature.

[0041] S103: The processor controls the state of the outdoor heat exchanger and the operating parameters of the indoor unit according to the target operating mode.

[0042] Among them, the target operation modes include reheat dehumidification with dehumidification as the main focus and reheat dehumidification with heating as the main focus.

[0043] Here, after the air conditioner receives and responds to the reheat dehumidification command, it uses sensors and other detection elements to obtain the current indoor ambient temperature. Based on the indoor ambient temperature, the user's desired indoor temperature is determined, thereby determining the target operating mode for reheat dehumidification. Specifically, the target operating mode can be determined based on the indoor ambient temperature and the user's comfort temperature. When the indoor ambient temperature is lower than the user's comfort temperature, the target operating mode is reheat dehumidification, which prioritizes heating. When the indoor ambient temperature is higher than the user's comfort temperature, the target operating mode is reheat dehumidification, which prioritizes dehumidification. As can be understood, when the indoor ambient temperature indicates a low indoor temperature, reheat dehumidification will further lower the indoor temperature, potentially exacerbating user discomfort. Therefore, in this case, reheat dehumidification prioritizes heating to alleviate user discomfort. When the indoor ambient temperature indicates a high indoor temperature, reheat dehumidification will lower the indoor temperature without causing significant discomfort to the user. In this case, reheat dehumidification prioritizes dehumidification, improving dehumidification efficiency and ensuring user comfort to a certain extent.

[0044] Furthermore, after determining the target operating mode, the state of the outdoor heat exchanger and the operating parameters of the indoor unit are controlled based on the target operating mode. Controlling the state of the outdoor heat exchanger primarily refers to controlling whether it is in the on state. Controlling the operating parameters of the indoor unit primarily involves controlling the refrigerant flow rate, or the throttle valve opening, in the indoor heat exchanger. In this way, by adjusting the state of the outdoor heat exchanger and the refrigerant flow rate in the indoor heat exchanger, effective temperature regulation is achieved during the reheat dehumidification process.

[0045] The dehumidification method for an air conditioner provided in the disclosed embodiments determines a target operating mode for reheat dehumidification based on the indoor ambient temperature. This ensures that when the air conditioner performs reheat dehumidification in the target operating mode, the indoor ambient temperature meets the user's requirements. Controlling the outdoor heat exchanger's state and the indoor unit's operating parameters based on the target operating mode helps fully utilize cooling and heating energy during reheat dehumidification, effectively regulating the indoor temperature. This improves temperature regulation and meets the user's desired indoor temperature.

[0046] Optionally, in step S102, the processor determines a target operation mode of reheat dehumidification according to the indoor ambient temperature, including:

[0047] When the indoor ambient temperature is lower than the first temperature and higher than the second temperature, the processor determines that the target operation mode is dehumidification-dominated reheat dehumidification.

[0048] When the indoor ambient temperature is less than or equal to the second temperature, the processor determines that the target operation mode is heating-dominated reheat dehumidification.

[0049] Here, a temperature threshold is set to determine the target operating mode for reheat dehumidification. When the indoor ambient temperature Tao satisfies T2 < Tao, the indoor ambient temperature is relatively high, so the air conditioning operation mode is reheat dehumidification with dehumidification as the primary mode. When the indoor ambient temperature Tao satisfies Tao ≤ T2, the indoor ambient temperature is relatively low, so the air conditioning operation mode is reheat dehumidification with heating as the primary mode. Furthermore, it is understandable that when the indoor ambient temperature is too high, the reheat dehumidification mode is no longer applicable, and dehumidification can proceed directly. Therefore, a first temperature can be set to limit the maximum indoor ambient temperature in reheat dehumidification mode. That is, when the indoor ambient temperature Tao satisfies T2 < Tao < T1, the indoor ambient temperature is relatively high, so the air conditioning operation mode is reheat dehumidification with dehumidification as the primary mode. The value range of the first temperature is [26°C, 28°C]; the value range of the second temperature is [19°C, 21°C].

[0050] Optionally, in step S103, the processor controls the state of the outdoor heat exchanger according to the target operation mode, including:

[0051] When the target operation mode is dehumidification-dominated reheat dehumidification, the outdoor heat exchanger is controlled to be turned on and to function as a condenser.

[0052] When the target operation mode is heating-dominated reheat dehumidification, the outdoor heat exchanger is controlled to be closed.

[0053] Here, when the operating mode is reheat dehumidification with dehumidification as the main function, the exhaust pipe of the outdoor heat exchanger and the compressor are connected by controlling the four-way valve. In this way, a portion of the high-temperature refrigerant discharged by the compressor flows into the outdoor heat exchanger for heat exchange. At the same time, the exhaust pipe of the compressor is also connected to the first indoor heat exchanger through the three-way valve, so that another portion of the high-temperature refrigerant discharged by the compressor flows into the first indoor heat exchanger for heat exchange. After the high-temperature refrigerant is converted into low-temperature refrigerant through indoor and outdoor heat exchange, it flows into the second indoor heat exchanger for dehumidification. When the operating mode is reheat dehumidification with heating as the main function, the exhaust pipe of the outdoor heat exchanger and the compressor is disconnected by controlling the four-way valve, that is, the refrigerant does not flow through the outdoor heat exchanger. In this way, all the high-temperature refrigerant flows into the first indoor heat exchanger to reheat the indoor air, which can increase the reheat temperature.

[0054] Understandably, dehumidification-focused reheat dehumidification means the dehumidification load exceeds the reheat load. Using heat exchange solely through the first heat exchanger would not be enough to meet the cooling capacity required for the dehumidification load. Therefore, both the outdoor heat exchanger and the first indoor heat exchanger function as condensers. However, heating-focused reheat dehumidification means the reheat load exceeds the dehumidification load. In this case, the heat exchange capacity of the first heat exchanger is sufficient to meet the dehumidification load, eliminating the need to operate the outdoor heat exchanger.

[0055] Optionally, when the target operation mode is dehumidification-based reheat dehumidification, in step S103, the processor controls the operation parameters of the indoor unit according to the target operation mode, including:

[0056] S131 , the processor determines a first target evaporating temperature of the second indoor heat exchanger.

[0057] S132: The processor adjusts the opening of the second throttle valve of the second indoor heat exchanger according to the first operating frequency of the compressor and the inlet air temperature of the indoor unit, so that the actual evaporation temperature of the second indoor heat exchanger reaches the first target evaporation temperature.

[0058] S133, the processor adjusts the opening of the outdoor throttle valve and the opening of the first throttle valve of the first indoor heat exchanger according to the outlet air temperature of the indoor unit and / or the coil temperature of the first indoor heat exchanger, so that the actual outlet air temperature is greater than the actual inlet air temperature.

[0059] Here, when the air conditioner operates in reheat dehumidification mode, which primarily focuses on dehumidification, a first target evaporating temperature is first determined for the second indoor heat exchanger. This first target evaporating temperature depends on indoor environmental parameters and / or the user's desired indoor temperature. Given a given user's desired indoor temperature, the higher the humidity and / or temperature, the lower the first target evaporating temperature; this helps improve dehumidification performance. Given a given indoor environmental parameter, the lower the user's desired indoor temperature, the lower the first target evaporating temperature.

[0060] After determining the first target evaporating temperature, the opening of the second throttle valve corresponding to the second indoor heat exchanger is adjusted so that the actual evaporating temperature of the second indoor heat exchanger reaches the first target evaporating temperature. Specifically, the second throttle valve is adjusted in combination with the operating frequency of the compressor and the inlet air temperature of the indoor unit. Furthermore, the adjustment opening range of the second throttle valve can be determined based on the operating frequency of the compressor. Generally, the higher the operating frequency of the compressor, the larger the lower limit value of the adjustment opening range of the second throttle valve. That is, the larger the opening. Then, based on the inlet air temperature of the indoor unit (that is, the current temperature detected at the air inlet of the indoor unit), the opening of the second throttle valve is adjusted. When the inlet air temperature is higher, the opening of the second throttle valve is larger, and the actual evaporating temperature of the second indoor heat exchanger is reduced to the first target evaporating temperature by increasing the refrigerant flow rate.

[0061] At the same time, the openings of the outdoor throttle valve and the first throttle valve are adjusted based on the indoor unit's outlet air temperature and / or the coil temperature of the first indoor heat exchanger. If the first throttle valve opening remains unchanged, a smaller opening of the outdoor throttle valve increases the refrigerant flow rate through the first indoor heat exchanger, which in turn increases the coil temperature of the first indoor heat exchanger and, consequently, the outlet air temperature. Similarly, if the outdoor throttle valve opening remains unchanged, a larger opening of the first throttle valve increases the refrigerant flow rate through the first indoor heat exchanger. A higher refrigerant flow rate through the first indoor heat exchanger helps to increase the reheat temperature. Because the disclosed embodiment primarily performs cooling-based reheat dehumidification, only the openings of the outdoor throttle valve and the first throttle valve are adjusted to ensure that the air conditioner's outlet air temperature is greater than the inlet air temperature. Specifically, the difference between the outlet and inlet air temperatures is greater than a first threshold and less than a second threshold. For example, the first threshold can be 0°C and the second threshold can be 2°C. This ensures effective dehumidification while preventing users from experiencing excessively low temperatures.

[0062] Optionally, when the target operation mode is heating-dominated reheat dehumidification, in step S103, the processor controls the operation parameters of the indoor unit according to the target operation mode, including:

[0063] S134 , the processor determines a second target evaporating temperature of the second indoor heat exchanger of the indoor unit.

[0064] S135: The processor adjusts the opening of the second throttle valve of the second indoor heat exchanger according to the second operating frequency of the compressor and the inlet air temperature of the indoor unit, so that the actual evaporation temperature of the second indoor heat exchanger reaches the second target evaporation temperature.

[0065] S136: The processor adjusts the opening of the first throttle valve of the first indoor heat exchanger according to the outlet air temperature of the indoor unit and / or the coil temperature of the first indoor heat exchanger so that the actual outlet air temperature reaches the target outlet air temperature.

[0066] In the embodiment of the present disclosure, the logic of step S134 and step S135 refers to the reheat dehumidification mode with cooling as the main mode, and will not be repeated here. Here, in the reheat dehumidification mode with heating as the main mode, the circuit where the outdoor throttle valve is located is not conductive, so only the opening of the first throttle valve is adjusted. When the outlet air temperature of the indoor unit is low (i.e., the current temperature of the indoor unit outlet detected), and / or the coil temperature of the first indoor heat exchanger is low, the opening of the first throttle valve is increased to increase the refrigerant flow of the first indoor heat exchanger, thereby increasing the outlet air temperature so that the actual outlet air temperature reaches the target outlet air temperature. Among them, the target outlet air temperature refers to the temperature at which the user feels comfortable (i.e., the user comfort temperature), or the temperature set by the user.

[0067] Optionally, in step S131 or S134, the processor determines the first target evaporation temperature or the second target evaporation temperature of the second heat exchanger of the indoor unit, including:

[0068] When the user sets the target dehumidification temperature, the processor determines the first target evaporation temperature of the second indoor heat exchanger based on the first target dehumidification temperature of reheat dehumidification with dehumidification as the main method; or determines the second target evaporation temperature of the second indoor heat exchanger based on the second target dehumidification temperature of reheat dehumidification with heating as the main method.

[0069] If the user does not set the target dehumidification temperature, the processor determines the current dew point temperature according to the current indoor temperature and humidity; and determines the first target evaporation temperature or the second target evaporation temperature of the second indoor heat exchanger according to the current dew point temperature.

[0070] Here, the determination of the target evaporation temperature of the second heat exchanger is described for cases where the user sets a dehumidification temperature and when the air conditioner automatically dehumidifies without setting a dehumidification temperature. When the user sets a target dehumidification temperature, the target dehumidification temperature for dehumidification-primarily reheat dehumidification is the first target dehumidification temperature, and the target dehumidification temperature for heating-primarily reheat dehumidification is the second target dehumidification temperature. The first target dehumidification temperature and the second target dehumidification temperature may be the same or different. Furthermore, the first target evaporation temperature is determined based on the first target dehumidification temperature set by the user, or the second target evaporation temperature is determined based on the second target dehumidification temperature set by the user. The target dehumidification temperature and the target evaporation temperature are positively correlated. That is, the higher the target dehumidification temperature, the higher the target evaporation temperature.

[0071] If the user has not set a target dehumidification temperature, the first target evaporation temperature (for dehumidification-focused reheat dehumidification mode) or the second target evaporation temperature (for heating-focused reheat dehumidification mode) of the indoor heat exchanger is determined based on indoor environmental parameters. Specifically, the dew point temperature is determined based on the current indoor temperature and humidity. The corresponding dew point temperature for the current environmental parameters can be determined by looking up a table. Based on the dew point temperature, the corresponding target evaporation temperature is then determined. The dew point temperature and target evaporation temperature are positively correlated.

[0072] Optionally, in step S132 or S135, the processor determines the first operating frequency or the second operating frequency of the compressor by:

[0073] The processor determines a first operating frequency of the compressor according to a dehumidification load of the dehumidification-dominated reheat dehumidification; or determines a second operating frequency of the compressor according to a dehumidification load of the heating-dominated reheat dehumidification.

[0074] Here, in both the heating-primary reheat dehumidification mode and the dehumidification-primary reheat dehumidification mode, the compressor operating frequency is determined based on the dehumidification load. The greater the dehumidification load, the higher the compressor operating frequency. This is because the dehumidification effect is primarily determined by the compressor operating frequency and the opening of the second throttle valve. The compressor operating frequency limits the opening range of the second throttle valve. After determining the second throttle valve opening using the aforementioned method, if the compressor operating frequency remains unchanged, adjusting the second throttle valve opening will affect the dehumidification effect. In other words, once the second throttle valve opening is determined, any correction or adjustment to it inevitably involves adjusting the compressor frequency. However, the reheat load can adjust the openings of both the outdoor throttle valve and the first throttle valve, or only the first throttle valve. Furthermore, adjustment of the outdoor throttle valve and the first throttle valve does not require adaptive adjustment of the compressor frequency. Therefore, the compressor operating frequency is determined based on the dehumidification load.

[0075] Combine Figure 7 As shown, an embodiment of the present disclosure provides a dehumidification device 100 for an air conditioner, comprising a processor 101 and a memory 102. Optionally, the device 100 may further include a communication interface 103 and a bus 104. The processor 101, the communication interface 103, and the memory 102 may communicate with each other via the bus 104. The communication interface 103 may be used for information transmission. The processor 101 may call the logic instructions in the memory 102 to execute the dehumidification method for an air conditioner of the above embodiment.

[0076] In addition, the logic instructions in the memory 102 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0077] Memory 102, 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 the present disclosure. Processor 101 executes the program instructions / modules stored in memory 102 to perform functional applications and data processing, thereby implementing the dehumidification method for an air conditioner in the above-described embodiments.

[0078] The memory 102 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal device. Furthermore, the memory 102 may include high-speed random access memory and non-volatile memory.

[0079] Combine Figure 8 As shown, an embodiment of the present disclosure provides an air conditioner 200, comprising: a compressor 10, a four-way valve 21, a three-way valve 22, an outdoor heat exchanger 30, an indoor heat exchanger 40, and a throttle valve 50. The compressor 10 comprises an intermediate pressure cylinder 11 and a low pressure cylinder 12. The indoor heat exchanger 40 comprises one or more groups, each group of indoor heat exchangers comprising a first indoor heat exchanger 401 and a second indoor heat exchanger 402 connected in parallel; one end of the second indoor heat exchanger 402 is connected to the intake pipe of the intermediate pressure cylinder 11 and the exhaust pipe of the compressor through the four-way valve 21, and one end of the first indoor heat exchanger 401 is connected to the exhaust pipe of the compressor through the three-way valve 22; the other ends of the first indoor heat exchanger 401 and the second indoor heat exchanger 402 are connected to the outdoor heat exchanger 30 through the first throttle valve 501 and the second throttle valve 502, respectively; and the above-mentioned dehumidification device 100 for air conditioning. The dehumidification device 100 for air conditioning is electrically connected to the first throttle valve, the second throttle valve, the compressor, the four-way valve and the three-way valve. It can be understood by those skilled in the art that the dehumidification device 100 for air conditioning can be adapted to a feasible air conditioning body to achieve other feasible embodiments.

[0080] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned dehumidification method for an air conditioner.

[0081] The technical solutions of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, among other media capable of storing program code.

[0082] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0083] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0084] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, and can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0085] The flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operations of the systems, methods and computer program products according to the embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical functions. In some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in an order different from that disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A dehumidification method for air conditioning, characterized in that: include: responding to a reheating and dehumidification instruction of the air conditioner and obtaining the indoor ambient temperature; Determine the target operation mode of reheat dehumidification according to the indoor ambient temperature; Control the status of the outdoor heat exchanger and the operating parameters of the indoor unit according to the target operating mode; Among them, the target operation modes include a reheat dehumidification mode mainly for dehumidification and a reheat dehumidification mode mainly for heating.

2. The method according to claim 1, characterized in that Determine the target operation mode of reheat dehumidification based on the indoor ambient temperature, including: When the indoor ambient temperature is greater than the second temperature, determining the target operation mode to be dehumidification-based reheat dehumidification; When the indoor ambient temperature is less than or equal to the second temperature, the target operation mode is determined to be heating-dominated reheat dehumidification.

3. The method according to claim 1, characterized in that Control the status of the outdoor heat exchanger according to the target operation mode, including: When the target operation mode is dehumidification-based reheat dehumidification, the outdoor heat exchanger is controlled to be turned on and the outdoor heat exchanger is controlled to function as a condenser; When the target operation mode is heating-dominated reheat dehumidification, the outdoor heat exchanger is controlled to be closed.

4. The method according to claim 1, wherein The air conditioner indoor unit includes a first indoor heat exchanger and a second indoor heat exchanger arranged in parallel. When the target operating mode is dehumidification-based reheat dehumidification, the operating parameters of the indoor unit are controlled according to the target operating mode, including: determining a first target evaporating temperature of the second indoor heat exchanger; adjusting the opening of the second throttle valve of the second indoor heat exchanger according to the first operating frequency of the compressor and the inlet air temperature of the indoor unit so that the actual evaporation temperature of the second indoor heat exchanger reaches the first target evaporation temperature; and According to the outlet air temperature of the indoor unit and / or the coil temperature of the first indoor heat exchanger, the opening of the outdoor throttle valve and the opening of the first throttle valve of the first indoor heat exchanger are adjusted so that the actual outlet air temperature is greater than the actual inlet air temperature.

5. The method according to claim 1, wherein The air conditioner indoor unit includes a first indoor heat exchanger and a second indoor heat exchanger arranged in parallel. When the target operating mode is heating-based reheat dehumidification, the operating parameters of the indoor unit are controlled according to the target operating mode, including: determining a second target evaporating temperature of the second indoor heat exchanger; adjusting the opening of the second throttle valve of the second indoor heat exchanger according to the second operating frequency of the compressor and the inlet air temperature of the indoor unit so that the actual evaporation temperature of the second indoor heat exchanger reaches the second target evaporation temperature; and According to the outlet air temperature of the indoor unit and / or the coil temperature of the first indoor heat exchanger, the opening of the first throttle valve of the first indoor heat exchanger is adjusted so that the actual outlet air temperature reaches the target outlet air temperature.

6. The method according to claim 4 or 5, characterized in that Determining a first target evaporating temperature or a second target evaporating temperature of a second heat exchanger of the indoor unit includes: When the user sets the target dehumidification temperature, the first target evaporation temperature of the second indoor heat exchanger is determined based on the first target dehumidification temperature of the dehumidification-dominated reheat dehumidification; or the second target evaporation temperature of the second indoor heat exchanger is determined based on the second target dehumidification temperature of the heating-dominated reheat dehumidification; If the user does not set the target dehumidification temperature, the current dew point temperature is determined according to the current indoor temperature and humidity; and the first target evaporation temperature or the second target evaporation temperature of the second indoor heat exchanger is determined according to the current dew point temperature.

7. The method according to claim 4 or 5, characterized in that The first operating frequency or the second operating frequency of the compressor is determined by: The first operating frequency of the compressor is determined according to the dehumidification load of the dehumidification-dominated reheat dehumidification; or the second operating frequency of the compressor is determined according to the dehumidification load of the heating-dominated reheat dehumidification.

8. A dehumidification device for an air conditioner, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the dehumidification method for an air conditioner according to any one of claims 1 to 7 when running the program instructions.

9. An air conditioner, characterized in that: include: Compressor, including intermediate pressure cylinder and low pressure cylinder; A four-way valve connected to the exhaust line of the compressor and to the suction line of the intermediate pressure cylinder; A three-way valve connected to the exhaust line of the compressor and to the suction line of the low-pressure cylinder; The outdoor heat exchanger has one end connected to the exhaust pipe of the compressor through a four-way valve; The indoor heat exchanger includes one or more groups, each group of indoor heat exchangers includes a first indoor heat exchanger and a second indoor heat exchanger connected in parallel; one end of the first indoor heat exchanger is connected to the suction line of the low-pressure cylinder through a three-way valve, and one end of the second indoor heat exchanger is connected to the suction line of the medium-pressure cylinder through a four-way valve; the other ends of the first indoor heat exchanger and the second indoor heat exchanger are connected to the other end of the outdoor heat exchanger through a first throttle valve and a second throttle valve respectively; The dehumidification device for an air conditioner according to claim 8 is electrically connected to the first throttle valve, the second throttle valve, the compressor, the four-way valve and the three-way valve, respectively.

10. A computer-readable storage medium storing program instructions, characterized in that: When the program instructions are executed, the computer is configured to execute the dehumidification method for air conditioning according to any one of claims 1 to 7.

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