Air conditioner and air conditioner dehumidification and refrigeration method

Abstract

The invention discloses an air conditioner and a dehumidification method of the air conditioner, the air conditioner comprises an indoor unit and an outdoor unit, a compressor is arranged in the outdoor unit, and a first indoor heat exchanger and a second indoor heat exchanger are arranged in the indoor unit; an outdoor heat exchanger and a communicating valve are arranged in the outdoor unit; one end of the first indoor heat exchanger and one end of the second indoor heat exchanger are connected to one end of the compressor; the other end of the first indoor heat exchanger is connected with the other end of the second indoor heat exchanger to form a connecting point which is connected to one end of the outdoor heat exchanger. The other end of the outdoor heat exchanger is connected to the second end of the communicating valve. The other end of the compressor is connected to the third end of the communicating valve. The third end of the communication valve can be communicated with the first end or the second end in a switching mode. According to the embodiment of the invention, effective dehumidification is realized, meanwhile, the stability of the indoor temperature is maintained through the reheating effect of the condenser, and excessive cooling caused by dehumidification is avoided.

Description

Technical Field

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

[0002] In the dehumidification process, although traditional air conditioners achieve dehumidification by making the evaporator temperature lower than the condensation temperature of water in the air, there are obvious deficiencies in dehumidification effect and user experience, which are mainly reflected in the following aspects:

[0003] (1) In order to achieve a better dehumidification effect, the evaporator of a traditional air conditioner needs a lower temperature, so the traditional air conditioner needs to be set at a lower temperature. However, this practice often leads to a significant drop in indoor temperature, thus affecting the user's comfort;

[0004] (2) When the air conditioner is set to dehumidification mode and reaches the set temperature, the compressor may shut down frequently. During the compressor shutdown period, the indoor humidity is prone to rebound, resulting in poor dehumidification effect. Summary of the invention

[0005] The purpose of the present invention is to provide an air conditioner, an air conditioner and a condensed water antifreeze control method, aiming to solve the problem that the air conditioning dehumidification method used in the prior art causes a sharp drop in indoor temperature and poor dehumidification effect.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides an air conditioner, comprising an indoor unit and an outdoor unit, wherein the outdoor unit is provided with a compressor, the indoor unit is provided with a first indoor heat exchanger and a second indoor heat exchanger; the outdoor unit is provided with an outdoor heat exchanger and a connecting valve;

[0008] One end of the first indoor heat exchanger and one end of the second indoor heat exchanger are both connected to one end of the compressor, and one end of the second indoor heat exchanger is also connected to the first end of the communication valve;

[0009] The other end of the first indoor heat exchanger is connected to the other end of the second indoor heat exchanger to form a connection point, and the connection point is connected to one end of the outdoor heat exchanger;

[0010] The other end of the outdoor heat exchanger is connected to the second end of the connecting valve, and the other end of the compressor is connected to the third end of the connecting valve; wherein the third end of the connecting valve can be switched to connect with the first end or the second end.

[0011] Optionally, the indoor unit is provided with a one-way valve that can be opened and closed, a first pipeline is connected between one end of the first indoor heat exchanger and one end of the compressor, a second pipeline is connected between one end of the second indoor heat exchanger and the first end of the connecting valve, a third pipeline is provided between the first pipeline and the second pipeline, the one-way valve is provided on the third pipeline, and when the one-way valve is opened, it can unidirectionally control the refrigerant to flow from the second pipeline through the third pipeline to the first pipeline.

[0012] Optionally, a first throttling device is provided on the outdoor unit, and the first throttling device is connected between the outdoor heat exchanger and the connection point.

[0013] Optionally, a second throttling device is provided on the outdoor unit, and the second throttling device is connected between the other end of the first indoor heat exchanger and the other end of the second indoor heat exchanger.

[0014] Optionally, the indoor unit is provided with an environmental temperature sensing package for detecting the indoor ambient temperature.

[0015] Optionally, the connecting valve is an electric three-way valve.

[0016] The present invention also provides a dehumidification method for an air conditioner, which is applied to the air conditioner as described above, comprising:

[0017] When the air conditioner is in a dehumidification mode, obtaining a current indoor ambient temperature, and comparing the indoor ambient temperature with a preset temperature;

[0018] If the indoor ambient temperature is greater than or equal to the preset temperature, controlling the third end of the communication valve to switch to communicate with the second end;

[0019] If the indoor environment temperature is lower than the preset temperature, the third end of the communication valve is controlled to switch and communicate with the first end.

[0020] Optionally, also include:

[0021] When the third end of the communication valve is controlled to communicate with the second end, the one-way valve is opened;

[0022] When the third end of the communication valve is controlled to communicate with the first end, the one-way valve is closed.

[0023] Optionally, also include:

[0024] When the air conditioner is in cooling mode, the third end of the communication valve is controlled to switch to communicate with the second end.

[0025] Optionally, after controlling the connecting valve to act, the method further includes:

[0026] Delay for a predetermined time, re-acquire the current indoor ambient temperature, continue to compare it with the preset temperature, and control the action of the connecting valve according to the comparison result.

[0027] The present invention provides an air conditioner and a dehumidification method for the air conditioner. In an embodiment of the present invention, two heat exchangers are arranged in an indoor unit, and the flow path of the refrigerant is controlled by a connecting valve, so that the refrigerant can flow between different heat exchangers, thereby realizing the conversion of the flow path of the air conditioner in different modes, thereby realizing the switching between different dehumidification modes and cooling modes, avoiding a substantial drop in indoor temperature during the dehumidification process, so as to improve the user's comfort; at the same time, by avoiding frequent start and stop of the compressor, the possibility of indoor humidity rebound is reduced, thereby ensuring a more stable indoor humidity level, and the dehumidification effect is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of an air conditioner provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of an indoor unit provided by an embodiment of the present invention;

[0031] Figure 3 A schematic flow chart of a dehumidification method for an air conditioner provided in an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of a sub-process of a dehumidification method for an air conditioner provided by an embodiment of the present invention;

[0033] Figure 5 A schematic flow chart of the working principle of the dehumidification method for an air conditioner provided by an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of a dehumidification device for an air conditioner provided in an embodiment of the present invention.

[0035] Description of the symbols in the figure:

[0036] 100, indoor unit; 101, first indoor heat exchanger; 102, second indoor heat exchanger; 103, one-way valve; 104, second throttling device; 105, cross-flow fan blade; 106, wind guide plate; 200, outdoor unit; 201, compressor; 202, outdoor heat exchanger; 203, connecting valve; 2031, first end; 2032, second end; 2033, third end; 204, first throttling device; 300, connection point; 400, first pipeline; 500, second pipeline; 600, third pipeline. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0039] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0040] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0041] See also Figure 1The embodiment of the present invention provides an air conditioner, which includes an indoor unit 100 and an outdoor unit 200. The outdoor unit 200 is provided with a compressor 201. The indoor unit 100 is provided with a first indoor heat exchanger 101 and a second indoor heat exchanger 102. The outdoor unit 200 is provided with an outdoor heat exchanger 202 and a connecting valve 203. One end of the first indoor heat exchanger 101 and one end of the second indoor heat exchanger 102 are both connected to one end of the compressor 201. One end of the second indoor heat exchanger 102 is also connected to the connecting valve 203. The first end 2031 of the valve 203; the other end of the first indoor heat exchanger 101 is connected to the other end of the second indoor heat exchanger 102 to form a connection point 300, and the connection point 300 is connected to one end of the outdoor heat exchanger 202; the other end of the outdoor heat exchanger 202 is connected to the second end 2032 of the connecting valve 203, and the other end of the compressor 201 is connected to the third end 2033 of the connecting valve 203; wherein the third end 2033 of the connecting valve 203 can be switchably connected to the first end 2031 or the second end 2032.

[0042] In this embodiment, the compressor 201 is responsible for compressing the refrigerant to provide power for the refrigeration cycle. The third end 2033 of the connecting valve 203 can be switched to be connected to the first end 2031 or the second end 2032. This design allows the air conditioner to change the connection mode of the connecting valve 203 in different working modes, thereby flexibly adjusting the flow direction of the refrigerant.

[0043] Furthermore, the connection point 300 formed by connecting the other end of the first indoor heat exchanger 101 with the other end of the second indoor heat exchanger 102 allows the refrigerant to circulate between the outdoor heat exchanger 202 and the first indoor heat exchanger 101 and the first indoor heat exchanger 101. The connection point 300 can also be understood as a pipeline connected between the other end of the first indoor heat exchanger 101 and one end of the outdoor heat exchanger 202, and a pipeline is also connected between the other end of the second indoor heat exchanger 102 and one end of the outdoor heat exchanger 202. The point where the two pipelines intersect is the connection point 300.

[0044] The embodiment of the present invention sets two heat exchangers in the indoor unit 100 and controls the flow path of the refrigerant through the connecting valve 203, so that the refrigerant can flow between different heat exchangers, realize the conversion of the flow path of the air conditioner in different modes, thereby realizing the switching of the dehumidification mode and the cooling mode, avoiding a sharp drop in indoor temperature during the dehumidification process to improve the user's comfort; at the same time, by avoiding frequent start and stop of the compressor 201, the possibility of indoor humidity rebound is reduced, thereby ensuring a more stable indoor humidity level and greatly improving the dehumidification effect.

[0045] Furthermore, a one-way valve 103 that can be opened and closed is provided on the indoor unit 100, a first pipeline 400 is connected between one end of the first indoor heat exchanger 101 and one end of the compressor 201, a second pipeline 500 is connected between one end of the second indoor heat exchanger 102 and the first end 2031 of the connecting valve 203, a third pipeline 600 is provided between the first pipeline 400 and the second pipeline 500, the one-way valve 103 is provided on the third pipeline 600, and when the one-way valve 103 is opened, it can unidirectionally control the refrigerant to flow from the second pipeline 500 to the first pipeline 400 via the third pipeline 600.

[0046] In this embodiment, one end of the second indoor heat exchanger 102 is indirectly connected to one end of the compressor 201, that is, a one-way valve 103 is provided between one end of the second indoor heat exchanger 102 and one end of the compressor 201. The first pipeline 400, the second pipeline 500 and the third pipeline 600 participate in the refrigeration cycle or the heating cycle in the air conditioner according to different modes. The one-way valve 103 is provided inside the indoor unit 100 and connected to the third pipeline 600 between the first pipeline 400 and the second pipeline 500. When the one-way valve 103 is opened, it can unidirectionally control the refrigerant to flow from the second pipeline 500 to the first pipeline 400 through the third pipeline 600.

[0047] That is, the opening and closing of the one-way valve 103 can flexibly adjust the flow of the refrigerant between the first indoor heat exchanger 101 and the second indoor heat exchanger 102. When the refrigerant is required to flow from the second indoor heat exchanger 102 to the compressor 201, the one-way valve 103 is opened, and the valve of the one-way valve 103 is set at one end facing the compressor 201, and the refrigerant can flow from the second pipeline 500 to the first pipeline 400 through the third pipeline 600, that is, through the third pipeline 600 to the first pipeline 400 and enter the compressor 201, but cannot flow from the first pipeline 400 to the second pipeline 500 through the third pipeline 600; and when the refrigerant is not required to flow from the second indoor heat exchanger 102 to the compressor 201, the one-way valve 103 can be directly closed. In this embodiment, the one-way valve 103 is used to adjust the distribution of the refrigerant between the first indoor heat exchanger 101 and the second indoor heat exchanger 102. The one-way valve 103 helps to maintain the stability of the indoor temperature during the dehumidification process, avoid excessive drop in the indoor temperature, and improve user comfort.

[0048] Furthermore, the outdoor unit 200 is provided with a first throttling device 204, which is connected between the outdoor heat exchanger 202 and the connection point 300. In this embodiment, the first throttling device 204 can adjust the flow rate of the refrigerant flowing through the outdoor heat exchanger 202. By accurately controlling the flow rate and pressure of the refrigerant, the air conditioner can achieve more flexible control and adjustment in various modes such as cooling mode or dehumidification mode, meet the needs of different users, and bring users a more comfortable, energy-saving and efficient use experience.

[0049] Furthermore, the outdoor unit 200 is provided with a second throttling device 104, which is connected between the other end of the first indoor heat exchanger 101 and the other end of the second indoor heat exchanger 102. In this embodiment, the second throttling device 104 can adjust the refrigerant flow rate flowing through the first indoor heat exchanger 101 and the second indoor heat exchanger 102. Specifically, the second throttling device 104 can adjust the refrigerant distribution between the first indoor heat exchanger 101 and the second indoor heat exchanger 102. In the dehumidification mode, by adjusting the opening degree of the second throttling device 104, the condensation effect on the second indoor heat exchanger 102 can be optimized, and the condensation and discharge of moisture in the air can be accelerated, thereby improving the dehumidification efficiency.

[0050] Furthermore, the indoor unit 100 is provided with an environmental temperature sensing package for detecting the indoor ambient temperature. In this embodiment, the environmental temperature sensing package can detect the indoor ambient temperature in real time and accurately, and transmit the data to the control system of the air conditioner. The control system can accurately adjust the flow, pressure and temperature of the refrigerant according to the data provided by the environmental temperature sensing package, and adjust the operating state of the air conditioner according to actual needs, thereby realizing accurate control of the indoor ambient temperature.

[0051] In a specific embodiment, the connecting valve 203 is an electric three-way valve. The electric three-way valve is a valve with three ports, which is driven by electricity. That is, the first end 2031, the second end 2032 and the third end 2033 of the electric three-way valve. The electric three-way valve can divide the refrigerant into two outflows as needed. The electric three-way valve is remotely controlled by an electric actuator and can be integrated with the control system of the air conditioner to automatically adjust the opening and closing state of the electric three-way valve, thereby realizing intelligent control of the flow direction of the refrigerant.

[0052] Further, such as Figure 2 As shown, the indoor unit 100 is also provided with a crossflow blade 105 and an air guide plate 106, the air guide plate 106 is arranged at the air outlet of the indoor unit 100, and the first indoor heat exchanger 101 and the second indoor heat exchanger 102 are arranged between the crossflow blade 105 and the air guide plate 106. In this embodiment, the crossflow blade 105 generates airflow by rotating, and blows the air passing through the first indoor heat exchanger 101 and the second indoor heat exchanger 102 into the room, thereby achieving temperature adjustment and air circulation. The air guide plate 106 is used to adjust and distribute the blown airflow. By changing the angle and position of the air guide plate 106, the user can control the direction and intensity of the airflow to meet different comfort needs.

[0053] like Figure 3 As shown, an embodiment of the present invention further provides a dehumidification method for an air conditioner, which is applied to the air conditioner as described in any one of the above items, and includes steps S101 to S103:

[0054] S101, when the air conditioner is in a dehumidification mode, obtaining a current indoor ambient temperature, and comparing the indoor ambient temperature with a preset temperature;

[0055] S102, if the indoor ambient temperature is greater than or equal to the preset temperature, controlling the third end of the communication valve to switch to communicate with the second end;

[0056] S103: If the indoor ambient temperature is lower than the preset temperature, control the third end of the connecting valve to switch to the first end to connect.

[0057] In this embodiment, after the air conditioner enters the dehumidification mode, the current indoor ambient temperature is first obtained through the ambient temperature sensor package set on the indoor unit. Then, the indoor ambient temperature is compared with the preset temperature to ensure that the dehumidification process can be intelligently adjusted according to different indoor ambient temperatures, which not only ensures the dehumidification effect, but also avoids the discomfort caused by too low or too high indoor ambient temperature.

[0058] Specifically, when the indoor ambient temperature T is greater than or equal to the preset temperature, the air conditioning system determines that the current stage requires strong dehumidification, and enters the first dehumidification stage. The control system will instruct the third end of the control connecting valve (electric three-way valve) to connect with the second end. In this state, the electric three-way valve will adjust the flow direction of the refrigerant and guide it to the outdoor heat exchanger. The outdoor heat exchanger acts as a condenser. In the indoor unit, the first indoor heat exchanger and the second indoor heat exchanger are used together as evaporators, which increases the evaporation area and allows the moisture in the air to precipitate faster, thereby achieving a rapid dehumidification effect.

[0059] Furthermore, when the indoor ambient temperature T detected by the ambient temperature sensor is lower than the preset temperature, the air conditioning system determines that the indoor humidity has dropped significantly and the user's demand for dehumidification capacity has decreased, and the second dehumidification stage is entered at this time. The electric three-way valve will adjust its action again to control the third end of the connecting valve to switch to the first end, so that the compressor is connected to the second indoor heat exchanger. In the indoor unit, the first indoor heat exchanger continues to be used as an evaporator to reduce the indoor ambient temperature and continue dehumidification; while the second indoor heat exchanger is transformed into a condenser to heat the refrigerant that has been cooled and dehumidified by the first indoor heat exchanger, and then discharge it to avoid excessive drop in indoor ambient temperature and maintain the comfort of indoor ambient temperature.

[0060] In summary, the dehumidification method provided in this embodiment can be flexibly switched between different modes, achieving effective dehumidification. In the second dehumidification stage, the indoor ambient temperature is maintained stable through the reheating function of the indoor unit condenser, avoiding excessive cooling caused by dehumidification. At the same time, by avoiding frequent start and stop of the compressor, the possibility of humidity rebound is reduced, thereby ensuring a more stable indoor humidity level. In addition, in the dehumidification mode, the heat in the condenser is effectively recycled and utilized, reducing the overall energy consumption of the air-conditioning system.

[0061] In one embodiment, if Figure 4 As shown, the dehumidification method of the air conditioner further includes steps S201 to S202:

[0062] S201, opening the one-way valve when controlling the third end of the communication valve to communicate with the second end;

[0063] S202. When controlling the third end of the connecting valve to be connected to the first end, close the one-way valve.

[0064] In this embodiment, in step S201, when the third end of the connecting valve is connected to the second end, the air conditioning system is in the first dehumidification stage, and the first indoor heat exchanger and the second indoor heat exchanger are used together as evaporators. In order to ensure that the refrigerant can flow smoothly from the compressor to the two evaporators and prevent the refrigerant from flowing back, the one-way valve needs to be opened. The opening of the one-way valve can ensure the unidirectionality of the refrigerant during the flow process, improve the operating efficiency and stability of the system, reduce energy loss, and improve the dehumidification efficiency.

[0065] In step S202, when the third end of the connecting valve is connected to the first end, the air conditioning system enters the second dehumidification stage, at which time the first indoor heat exchanger is used as an evaporator, and the second indoor heat exchanger is converted into a condenser. In order to ensure that the refrigerant can flow correctly to these two different components and prevent the refrigerant from flowing back to the evaporator side on the condenser side, it is necessary to close the one-way valve. Closing the one-way valve can ensure that the evaporator can continue to dehumidify effectively, while ensuring that the refrigerant can heat the air on the condenser side to avoid excessive drop in room temperature. This helps to improve the user's comfort while maintaining efficient operation of the air conditioner.

[0066] In one embodiment, the dehumidification method for an air conditioner further includes step S301:

[0067] S301. When the air conditioner is in cooling mode, control the third end of the connecting valve to switch to the second end.

[0068] In this embodiment, in the cooling mode, the flow path of the refrigerant is the same as that of the first dehumidification stage. The electric three-way valve is switched to guide the refrigerant to the outdoor heat exchanger. The outdoor heat exchanger acts as a condenser, and the first indoor heat exchanger and the second indoor heat exchanger are used together as evaporators to provide a stronger cooling effect.

[0069] The air-conditioning system can flexibly switch between different modes. In the dehumidification mode, the reheating function of the indoor condenser is used to prevent the indoor ambient temperature from being too low. In the cooling mode, the first indoor heat exchanger and the second indoor heat exchanger act as evaporators together to provide a cooling effect.

[0070] In one embodiment, after controlling the connecting valve to act, the method further includes step S401:

[0071] S401, delaying for a predetermined time, re-obtaining the current indoor ambient temperature, and continuing to compare it with the preset temperature, and controlling the action of the connecting valve according to the comparison result.

[0072] In this embodiment, first, the air-conditioning system will perform delay processing according to a preset duration. This preset duration can be a few seconds, a few minutes or longer, depending on the design requirements of the air conditioner and the stability requirements of the indoor environment. After the delay ends, the air-conditioning system will re-acquire the current indoor ambient temperature through the ambient temperature sensing package. After obtaining the new current indoor ambient temperature T1, the air-conditioning system again compares the current indoor ambient temperature T1 with the preset temperature. According to the result of the temperature comparison, the control system will control the action of the connecting valve (electric three-way valve). If the indoor ambient temperature T1 is greater than or equal to the preset temperature, the state of the connecting valve is controlled to enhance the cooling or dehumidification effect; if the indoor ambient temperature T1 is lower than the preset temperature, the state of the connecting valve is controlled to reduce the cooling or dehumidification intensity.

[0073] In summary, through delay processing, the air conditioning system can avoid frequent adjustments caused by instantaneous temperature changes, thereby improving the stability of the indoor environment. Through precise temperature control and flexible adjustment of the connecting valve, the air conditioning system can ensure that the indoor ambient temperature is always maintained within the comfortable range set by the user, improving the overall comfort of the user. In addition, by optimizing the control strategy, it can also reduce unnecessary energy consumption and reduce operating costs.

[0074] like Figure 5 , which is a schematic diagram of the working process of the dehumidification method of the air conditioner of the present application, and describes in detail the dehumidification and refrigeration working principle of the air conditioner. Among them, the dehumidification mode is divided into a first dehumidification stage and a second dehumidification stage.

[0075] In a specific embodiment, the indoor unit receives a remote control signal and enters the dehumidification mode. The indoor unit determines whether it is in the first dehumidification stage or the second dehumidification stage according to the ambient temperature sensor package temperature T. When the indoor ambient temperature T is greater than or equal to the set temperature, the system is in the first dehumidification stage, the electric three-way valve guides the refrigerant to the outdoor heat exchanger, the first indoor heat exchanger and the second indoor heat exchanger are used together as evaporators, and the two evaporators simultaneously precipitate water in the air, which can achieve a rapid dehumidification effect; when the indoor ambient temperature T is less than the set temperature, the humidity in the room has dropped significantly, and the user's demand for dehumidification capacity has weakened. The system is in the second dehumidification stage at this time, the electric three-way valve is activated, and the compressor is connected to the second indoor heat exchanger. The first indoor heat exchanger acts as an evaporator to reduce the air temperature and dehumidify; the second indoor heat exchanger acts as a condenser to heat the air and discharge it to avoid excessive drop in indoor ambient temperature. The indoor unit receives the remote control signal and enters the cooling mode. The flow path of the refrigerant is the same as the first dehumidification stage. The electric three-way valve switches to guide the refrigerant to the outdoor heat exchanger. The first indoor heat exchanger and the second indoor heat exchanger are used together as evaporators to provide a stronger cooling effect.

[0076] like Figure 6 As shown, the embodiment of the present invention further provides a dehumidification device 10 for an air conditioner, comprising:

[0077] A comparison unit 11 , a first control unit 12 , and a second control unit 13 .

[0078] The comparison unit 11 is used to obtain the current indoor ambient temperature when the air conditioner is in the dehumidification mode, and compare the indoor ambient temperature with a preset temperature;

[0079] A first control unit 12, configured to control the third end of the communication valve to switch to communicate with the second end if the indoor ambient temperature is greater than or equal to the preset temperature;

[0080] The second control unit 13 is used to control the third end of the communication valve to switch and communicate with the first end if the indoor ambient temperature is lower than the preset temperature.

[0081] The device sets two heat exchangers in the indoor unit and controls the flow path of the refrigerant through a connecting valve, so that the refrigerant can flow between different heat exchangers, realizing the conversion of the flow path of the air conditioner in different modes, thereby realizing the switching of dehumidification mode and cooling mode, avoiding a sharp drop in indoor ambient temperature during the dehumidification process to improve user comfort; at the same time, by avoiding frequent start and stop of the compressor, the possibility of indoor humidity rebound is reduced, thereby ensuring a more stable indoor humidity level and greatly improving the dehumidification effect.

[0082] It should be noted that those skilled in the art can clearly understand that the specific implementation process of the above-mentioned system and each unit can refer to the corresponding description in the aforementioned method embodiment, and for the convenience and brevity of description, it will not be repeated here.

[0083] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An air conditioner, comprising an indoor unit and an outdoor unit, wherein the outdoor unit is provided with a compressor, characterized in that: The indoor unit is provided with a first indoor heat exchanger and a second indoor heat exchanger; the outdoor unit is provided with an outdoor heat exchanger and a connecting valve; One end of the first indoor heat exchanger and one end of the second indoor heat exchanger are both connected to one end of the compressor, and one end of the second indoor heat exchanger is also connected to the first end of the communication valve; The other end of the first indoor heat exchanger is connected to the other end of the second indoor heat exchanger to form a connection point, and the connection point is connected to one end of the outdoor heat exchanger; The other end of the outdoor heat exchanger is connected to the second end of the connecting valve, and the other end of the compressor is connected to the third end of the connecting valve; wherein the third end of the connecting valve can be switched to connect with the first end or the second end.

2. The air conditioner according to claim 1, characterized in that: The indoor unit is provided with a one-way valve that can be opened and closed, a first pipeline is connected between one end of the first indoor heat exchanger and one end of the compressor, a second pipeline is connected between one end of the second indoor heat exchanger and the first end of the connecting valve, a third pipeline is provided between the first pipeline and the second pipeline, the one-way valve is provided on the third pipeline, and when the one-way valve is opened, it can unidirectionally control the refrigerant to flow from the second pipeline to the first pipeline through the third pipeline.

3. The air conditioner according to claim 1, characterized in that: The outdoor unit is provided with a first throttling device, and the first throttling device is connected between the outdoor heat exchanger and the connection point.

4. The air conditioner according to claim 1, characterized in that: The outdoor unit is provided with a second throttling device, and the second throttling device is connected between the other end of the first indoor heat exchanger and the other end of the second indoor heat exchanger.

5. The air conditioner according to claim 1, characterized in that: The indoor unit is provided with an environmental temperature sensing package for detecting the indoor environmental temperature.

6. The air conditioner according to claim 1, characterized in that: The connecting valve is an electric three-way valve.

7. A dehumidification method for an air conditioner, applied to the air conditioner as claimed in claim 1, characterized in that: include: When the air conditioner is in a dehumidification mode, obtaining a current indoor ambient temperature, and comparing the indoor ambient temperature with a preset temperature; If the indoor ambient temperature is greater than or equal to the preset temperature, controlling the third end of the communication valve to switch to communicate with the second end; If the indoor environment temperature is lower than the preset temperature, the third end of the communication valve is controlled to switch and communicate with the first end.

8. The dehumidification method of the air conditioner according to claim 7, applied to the air conditioner according to claim 2, characterized in that: Also includes: When the third end of the communication valve is controlled to communicate with the second end, the one-way valve is opened; When the third end of the communication valve is controlled to communicate with the first end, the one-way valve is closed.

9. The dehumidification method for an air conditioner according to claim 7, characterized in that: Also includes: When the air conditioner is in cooling mode, the third end of the communication valve is controlled to switch and communicate with the second end.

10. The dehumidification method for an air conditioner according to claim 7, characterized in that: After controlling the connecting valve to act, the method further comprises: Delay for a predetermined time, re-acquire the current indoor ambient temperature, continue to compare it with the preset temperature, and control the action of the connecting valve according to the comparison result.

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