Control method of air conditioner

Abstract

The application provides a control method of an air conditioner. In the method, the current indoor environment temperature and the current indoor environment humidity are acquired first, and then it is judged whether the current indoor environment temperature is less than or equal to the set temperature and the current indoor environment humidity is greater than or equal to the set humidity. If yes, the air conditioner is controlled to operate in a comfortable dehumidification mode. In the comfortable dehumidification mode, the opening degree of a three-way valve is calculated according to the current indoor environment temperature and the current indoor environment humidity, and the three-way valve is adjusted according to the opening degree of the three-way valve. According to the technical scheme, the flow rates of the first refrigerant circuit and the second refrigerant circuit are controlled according to the current indoor environment humidity and the current indoor environment temperature, so that the air conditioner can achieve the comfortable dehumidification effect and the user experience is improved.

Description

TECHNICAL FIELD

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

[0002] The existing indoor heat exchanger of an air conditioner mainly focuses on heat exchange efficiency and assembly process in design, and thus usually only has specific properties of refrigeration and heating. When a user uses a dehumidification mode of the air conditioner (the indoor heat exchanger plays its refrigeration property), the surface temperature of the indoor heat exchanger is relatively low in order to achieve a dehumidification effect, and at this time, the air outlet temperature of the air conditioner is very low.

[0003] In a special season in southern areas, such as plum rain season or back to the south season, the low air outlet temperature can aggravate the discomfort of the user in the indoor environment. How to avoid excessive reduction of the indoor environment temperature on the basis of meeting the dehumidification effect is a problem to be solved at present. SUMMARY

[0004] An object of the present application is to provide a constant temperature dehumidification control method of an air conditioner.

[0005] A further object of the present application is to provide a rapid dehumidification method of an air conditioner.

[0006] In particular, the present application provides a control method of an air conditioner, the air conditioner comprising:

[0007] an outdoor heat exchanger;

[0008] a three-way valve, a liquid inlet of which is in communication with a liquid outlet of the outdoor heat exchanger;

[0009] a first indoor refrigerant flow path comprising a throttling device and a first indoor heat exchanger in series, the throttling device further being in communication with a first liquid outlet of the three-way valve;

[0010] a second indoor refrigerant flow path comprising a second indoor heat exchanger, two ends of the second indoor heat exchanger being in communication with a second liquid outlet of the three-way valve and the first indoor heat exchanger respectively, the control method comprising:

[0011] obtaining a current indoor environment temperature and a current indoor environment humidity;

[0012] determining whether the current indoor environment temperature is less than or equal to a set temperature and the current indoor environment humidity is greater than or equal to a set humidity;

[0013] if yes, controlling the air conditioner to operate in a comfortable dehumidification mode, wherein in the comfortable dehumidification mode, an opening degree of the three-way valve is calculated according to the current indoor environment temperature and the current indoor environment humidity, and the three-way valve is adjusted according to the opening degree of the three-way valve.

[0014] Optionally, the step of calculating the opening of the three-way valve according to the current indoor environment temperature and the current indoor environment humidity comprises:

[0015] calculating a target temperature of the inner coil of the first indoor heat exchanger according to the current indoor environment temperature and the current indoor environment humidity;

[0016] calculating the opening of the three-way valve according to the target temperature of the inner coil of the first indoor heat exchanger.

[0017] Optionally, the step of calculating the target temperature of the inner coil of the first indoor heat exchanger according to the current indoor environment temperature and the current indoor environment humidity comprises:

[0018] calculating the target temperature of the inner coil of the first indoor heat exchanger according to the following formula:

[0019] ΔT = (Hin-50)*0.1;

[0020] wherein, Te is the target temperature of the inner coil of the first indoor heat exchanger, Tin is the current indoor environment temperature, Hin is the current indoor environment humidity, and ΔT is a dehumidification set temperature difference.

[0021] Optionally, the step of calculating the opening of the three-way valve according to the target temperature of the inner coil of the first indoor heat exchanger comprises:

[0022] calculating the opening of the three-way valve according to the following formula:

[0023] B e = B0+ΔB, ΔB = 2(Te-Tevp)*ΔB k / 3;

[0024] wherein, B e is the opening of the three-way valve, B0 is the opening of the three-way valve in the last period, ΔB is a temperature difference opening coefficient of the three-way valve, Tevp is the current temperature of the inner coil of the first indoor heat exchanger, ΔB k is a temperature difference opening compensation value, and ΔB k is determined according to an outdoor temperature value.

[0025] Optionally, the air conditioner further comprises an indoor fan, wherein the indoor fan is arranged between the first indoor heat exchanger and the second indoor heat exchanger; and

[0026] after the air conditioner is controlled to operate in the comfortable dehumidification mode, the method further comprises: controlling the indoor fan to operate at a high wind speed.

[0027] Optionally, the air conditioner further comprises an outdoor fan, wherein the outdoor fan is arranged at the outdoor heat exchanger.

[0028] controlling the air conditioner to operate in the comfortable dehumidification mode, the method further comprises:

[0029] obtaining a current outdoor ambient temperature;

[0030] adjusting a rotating speed of the outdoor fan according to the current outdoor ambient temperature.

[0031] Optionally, the step of adjusting the rotating speed of the outdoor fan according to the current outdoor ambient temperature comprises:

[0032] determining the rotating speed of the outdoor fan corresponding to the current outdoor ambient temperature according to a preset corresponding table of outdoor ambient temperatures and rotating speeds of the outdoor fan.

[0033] Optionally, after the step of judging whether the current indoor ambient temperature is less than or equal to a set temperature and the current ambient humidity is greater than or equal to a set humidity, the method further comprises:

[0034] if not, controlling the air conditioner to operate in a fast dehumidification mode, wherein in the fast dehumidification mode, the liquid inlet of the three-way valve is only communicated with the first liquid outlet thereof.

[0035] Optionally, the step of obtaining the current indoor ambient temperature and the current indoor ambient humidity comprises:

[0036] obtaining a current indoor ambient temperature and a current indoor ambient humidity detected by a temperature detection device and a humidity detection device arranged at an indoor unit of the air conditioner.

[0037] Optionally, after the step of controlling the air conditioner to operate in the comfortable dehumidification mode, the method further comprises:

[0038] when the indoor ambient temperature reaches a target temperature and the indoor ambient humidity reaches a target humidity, controlling the outdoor unit of the air conditioner to stop operating, and after a set time length, controlling the air conditioner as a whole to shut down.

[0039] In the method provided by the application, the current indoor ambient temperature and the current indoor ambient humidity are first obtained, then it is judged whether the current indoor ambient temperature is less than or equal to a set temperature and the current indoor ambient humidity is greater than or equal to a set humidity, if yes, the air conditioner is controlled to operate in the comfortable dehumidification mode, in the comfortable dehumidification mode, the opening degree of the three-way valve is calculated according to the current indoor ambient temperature and the current indoor ambient humidity, and the three-way valve is adjusted according to the opening degree of the three-way valve, according to the current indoor ambient humidity and the current indoor ambient temperature, the flow rates of the first refrigerant circuit and the second refrigerant circuit are controlled, so that the air conditioner can achieve the effect of comfortable dehumidification, and the user experience is improved.

[0040] Further, if the current indoor environment temperature is not less than or equal to the set temperature and the current indoor environment humidity is greater than or equal to the set humidity, the air conditioner is controlled to operate in a fast dehumidification mode, in which the liquid inlet of the three-way valve is only communicated with the first liquid outlet, so that the air conditioner achieves a fast dehumidification effect.

[0041] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application and to implement the same according to the contents of the specification, and in order to make the above and other purposes, features and advantages of the present application more apparent and easy to understand, the following specific embodiments of the present application are described.

[0042] The above and other purposes, advantages and features of the present application will become more apparent from the following detailed description of specific embodiments of the present application, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0043] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are shown by way of example and not limitation. The same reference numbers in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0044] Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present application;

[0045] Fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] The air conditioner and its control method according to embodiments of the present application will be described below with reference to Fig. 1 and Fig. 2 . Among them, the directions or positional relationships indicated by "front", "back", "upper", "lower", "top", "bottom", "inner", "outer", "lateral" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] The terms "first", "second", and the like, are used only for descriptive purposes, and do not imply or suggest relative importance or imply the number of the indicated technical features. Thus, the definition of "first", "second", and the like features can explicitly or implicitly include at least one of the features, i.e. one or more of the features. In the description of the present application, the meaning of "a plurality" is at least two, for example two, three, etc., unless otherwise specifically limited. When a certain feature "includes or comprises" a certain or certain features, unless otherwise specifically described, it indicates that other features are not excluded and can further include other features.

[0048] Fig. 1 is a schematic structural diagram of an air conditioner 1 according to an embodiment of the present application. Referring to Fig. 1 The air conditioner 1 according to the present application can include a compressor 200, an outdoor heat exchanger 10, a three-way valve 20, a first indoor refrigerant flow path 30, and a second indoor refrigerant flow path 40. Among them, the compressor 200 and the outdoor heat exchanger 10 are arranged in the outdoor unit of the air conditioner 1, and the first indoor refrigerant flow path 30 and the second refrigerant flow path are arranged in the indoor unit of the air conditioner 1.

[0049] The three-way valve 20 has a liquid inlet 210, a first liquid outlet 220, and a second liquid outlet 230. The liquid inlet 210 of the three-way valve 20 is in communication with the liquid outlet of the outdoor heat exchanger 10. The first indoor refrigerant flow path 30 includes a throttling device 310, a liquid distribution device 320, and a first indoor heat exchanger 330 connected in series, and the throttling device 310 is also in communication with the first liquid outlet 220 of the three-way valve 20. The second indoor refrigerant flow path 40 includes a second indoor heat exchanger 410, and the two ends of the second indoor heat exchanger 410 are respectively in communication with the second liquid outlet 230 of the three-way valve 20 and the liquid inlet 210 of the liquid distribution device 320. Among them, the liquid inlet 210 of the three-way valve 20 is configured to be controlled to be in communication with its first liquid outlet 220 and / or second liquid outlet 230, so that the first indoor refrigerant flow path 30 and / or the second indoor refrigerant flow path 40 is in communication.

[0050] Among them, the throttling device 310 can be a throttling valve.

[0051] Among them, the liquid outlet of the three-way valve 20 is only in communication with its first liquid outlet 220, the first indoor refrigerant flow path 30 is in communication, and the refrigerant of the air conditioner outdoor unit only enters the first indoor heat exchanger 330 through the throttling device 310, the first indoor heat exchanger 330 provides cold energy, and the air conditioner 1 is in a rapid dehumidification mode.

[0052] The liquid outlet of the three-way valve 20 and the first liquid outlet 220 and the second liquid outlet 230 thereof are communicated, the first indoor refrigerant flow path 30 and the second indoor refrigerant flow path 40 are communicated, and the refrigerant of the air conditioner outdoor unit enters the first indoor heat exchanger 330 through the throttling device 310 and directly enters the second indoor heat exchanger 410. Among them, the refrigerant entering the second indoor heat exchanger 410 has a higher temperature, the temperature of the indoor air after heat exchange will be increased, and the refrigerant entering the second indoor heat exchanger 410 will return to the outdoor unit through the first indoor heat exchanger 330, the two parts of the refrigerant are mixed in the first indoor heat exchanger 330, and the temperature after mixing is in the middle, so that the air conditioner 1 can not only complete the dehumidification function, but also avoid the problem that the temperature of the indoor air is too low to cause the indoor temperature to continuously decrease and affect the user experience effect, the air conditioner 1 is in a constant temperature dehumidification state, and the user experience is improved.

[0053] The present application can switch multiple dehumidification modes by controlling the liquid inlet 210 of the three-way valve 20 to be communicated with the first liquid outlet 220 and / or the second liquid outlet 230 thereof.

[0054] In some embodiments of the present application, the first indoor refrigerant flow path 30 further comprises a first liquid inlet pipe 340, a second liquid inlet pipe 350, a third liquid inlet pipe 360, a fourth liquid inlet pipe 370 and a fifth liquid inlet pipe 380. Among them, the liquid inlets 210 of the first liquid inlet pipe 340, the second liquid inlet pipe 350, the third liquid inlet pipe 360, the fourth liquid inlet pipe 370 and the fifth liquid inlet pipe 380 are communicated with the liquid outlet of the liquid distribution device 320, and the liquid outlets of the first liquid inlet pipe 340, the second liquid inlet pipe 350, the third liquid inlet pipe 360, the fourth liquid inlet pipe 370 and the fifth liquid inlet pipe 380 are communicated with the first indoor heat exchanger 330.

[0055] Among them, one side of the first indoor heat exchanger 330 is provided with a plurality of liquid inlets 210 along the length direction, and the plurality of liquid inlets 210 on the first indoor heat exchanger 330 are respectively communicated with the liquid inlets 210 of the first liquid inlet pipe, the second liquid inlet pipe 350, the third liquid inlet pipe 360, the fourth liquid inlet pipe 370 and the fifth liquid inlet pipe 380.

[0056] Among them, the plurality of liquid inlets 210 on the first indoor heat exchanger 330 are arranged to make the refrigerant flow uniformly in the first heat exchanger inner shell, thereby improving the dehumidification effect of the first heat exchanger.

[0057] In some embodiments of the present application, the first indoor refrigerant flow path 30 further comprises a first liquid outlet pipe 390, a second liquid outlet pipe 391, a third liquid outlet pipe 392, a fourth liquid outlet pipe 393 and a fifth liquid outlet pipe 394, wherein the liquid inlet 210 of the first liquid outlet pipe 390, the second liquid outlet pipe 391, the third liquid outlet pipe 392, the fourth liquid outlet pipe 393 and the fifth liquid outlet pipe 394 is communicated with the first indoor heat exchanger 330, and the liquid outlets of the first liquid outlet pipe 390, the second liquid outlet pipe 391, the third liquid outlet pipe 392, the fourth liquid outlet pipe 393 and the fifth liquid outlet pipe 394 are sequentially connected in series with the liquid inlet 210 of the four-way valve 300, the compressor 200 and the outdoor heat exchanger 10.

[0058] In some embodiments of the present application, the first indoor heat exchanger 330 is provided with a plurality of liquid outlets on the other side along the length direction, the plurality of liquid outlets on the first indoor heat exchanger 330 correspond to the plurality of liquid inlets 210 on the first indoor heat exchanger 330, and the plurality of liquid outlets on the first indoor heat exchanger 330 are respectively communicated with the first liquid outlet pipe 390, the second liquid outlet pipe 391, the third liquid outlet pipe 392, the fourth liquid outlet pipe 393 and the fifth liquid outlet pipe 394.

[0059] In some embodiments of the present application, the second indoor refrigerant flow path 40 further comprises a sixth liquid inlet pipe 420 and a sixth liquid outlet pipe 430, wherein the second liquid outlet 230 of the three-way valve 20, the sixth liquid inlet pipe 420 and the liquid inlet 210 of the second indoor heat exchanger 410 are sequentially connected in series, and the liquid outlet of the second indoor heat exchanger 410, the sixth liquid outlet pipe 430 and the liquid inlet 210 of the liquid distribution device 320 are sequentially connected in series.

[0060] In some embodiments of the present application, the sixth liquid outlet pipe 430 is provided with a one-way stop valve 50, wherein the one-way stop valve 50 can play the role of check valve.

[0061] In some embodiments of the present application, the air conditioner 1 further comprises an outdoor fan 60, which is arranged at the outdoor heat exchanger 10, wherein the outdoor fan 60 is mainly used to drive the heat flow near the outdoor heat exchanger 10 to flow to the outside of the outdoor unit, so as to effectively dissipate heat of the outdoor unit.

[0062] In some embodiments of the present application, the air conditioner 1 further comprises an indoor fan 70, which is arranged between the first indoor heat exchanger 330 and the second indoor heat exchanger 410, wherein the indoor fan 70 is mainly used to drive the air, which is heated by the first heat exchanger and the second heat exchanger, near the first indoor heat exchanger 330 and the second indoor heat exchanger 410 to form an air flow flowing to the indoor environment.

[0063] In some embodiments of the present application, the air conditioner 1 further comprises an outdoor coil 80, which is arranged on a pipeline between the liquid outlet of the outdoor heat exchanger 10 and the liquid inlet 210 of the three-way valve 20.

[0064] In some embodiments of the present application, the air conditioner 1 further comprises a first indoor coil 90, which is arranged in the first indoor heat exchanger 330.

[0065] In some embodiments of the present application, the air conditioner 1 further comprises a second indoor coil 100, which is arranged in the second indoor heat exchanger 410.

[0066] Fig. 2 is a flowchart of a control method of the air conditioner 1 according to an embodiment of the present application. Referring to Fig. 2 The present application further proposes a control method of the air conditioner 1 based on the above method, which comprises at least the following steps S202-S206.

[0067] Step S202: obtaining the current indoor environment temperature and the current indoor environment humidity;

[0068] Step S204: determining whether the current indoor environment temperature is less than or equal to the set temperature and the current indoor environment humidity is greater than or equal to the set humidity;

[0069] Step S206: if yes, controlling the air conditioner 1 to operate in the comfortable dehumidification mode, wherein in the comfortable dehumidification mode, the opening degree of the three-way valve 20 is calculated according to the current indoor environment temperature and the current indoor environment humidity, and the three-way valve 20 is adjusted according to the opening degree of the three-way valve 20.

[0070] wherein the opening degree range of the three-way valve is 0-1000, when the opening degree is 0, the three-way valve is in the full-closed state; when the opening degree is 1000, the three-way valve is in the full-open state, at this time, the flow distribution ratio of the refrigerant flowing through the three-way valve is 1:1 (the flow ratio of the first indoor heat exchanger and the second indoor heat exchanger through the three-way valve is 1:1), the greater the opening degree of the three-way valve, the greater the flow through the second refrigerant circuit.

[0071] In the embodiments of the present application, the current indoor environment temperature and the current indoor environment humidity are first obtained, then it is determined whether the current indoor environment temperature is less than or equal to the set temperature and the current indoor environment humidity is greater than or equal to the set humidity, if yes, the air conditioner 1 is controlled to operate in the comfortable dehumidification mode, in the comfortable dehumidification mode, the opening degree of the three-way valve 20 is calculated according to the current indoor environment temperature and the current indoor environment humidity, and the three-way valve 20 is adjusted according to the opening degree of the three-way valve 20. Based on the technical scheme provided by the present application, the flow of the first refrigerant circuit and the second refrigerant circuit is controlled according to the current indoor environment humidity and the current indoor environment temperature, which can make the air conditioner 1 achieve the effect of comfortable dehumidification and improve the user experience.

[0072] It should be noted that the set temperature and the set humidity can be set according to actual conditions, and the present application does not particularly limit this.

[0073] In some embodiments of the present application, the calculation of the opening of the three-way valve 20 according to the current indoor environment temperature and the current indoor environment humidity in the step S206 comprises:

[0074] calculating the target temperature of the inner coil of the first indoor heat exchanger 330 according to the current indoor environment temperature and the current indoor environment humidity;

[0075] calculating the opening of the three-way valve 20 according to the target temperature of the inner coil of the first indoor heat exchanger 330.

[0076] In some embodiments of the present application, the calculation of the target temperature of the inner coil of the first indoor heat exchanger 330 according to the current indoor environment temperature and the current indoor environment humidity comprises:

[0077] calculating the target temperature of the inner coil of the first indoor heat exchanger 330 according to the following formula:

[0078] ΔT = (Hin-50)*0.1;

[0079] wherein Te is the target temperature of the inner coil of the first indoor heat exchanger 330, Tin is the current indoor environment temperature, Hin is the current indoor environment humidity, and ΔT is the dehumidification set temperature difference.

[0080] wherein Hin specifically represents the relative humidity, and for example, if Hin is 60%, the value in the formula is 60.

[0081] According to the above formula, under the condition of a certain current indoor environment temperature, the greater the current indoor environment humidity, the greater the target temperature of the inner coil of the first indoor heat exchanger; and the smaller the current indoor environment humidity, the smaller the target temperature of the inner coil of the first indoor heat exchanger.

[0082] Under the condition of a certain current indoor environment humidity, the greater the current indoor environment temperature, the greater the target temperature of the inner coil of the first indoor heat exchanger; and the smaller the current indoor environment temperature, the smaller the target temperature of the inner coil of the first indoor heat exchanger.

[0083] In some embodiments of the present application, the calculation of the opening of the three-way valve according to the target temperature of the inner coil of the first indoor heat exchanger comprises:

[0084] calculating the opening of the three-way valve according to the following formula:

[0085] B e = B0+ΔB, ΔB = 2(Te-Tevp)*ΔBk / 3;

[0086] wherein, B e is the opening degree of the three-way valve, B0 is the opening degree of the three-way valve in the last period, ΔB is the temperature difference opening degree coefficient of the three-way valve, Tevp is the current temperature of the inner coil of the first indoor heat exchanger, ΔB k is the temperature difference opening degree compensation value.

[0087] According to the above formula, the greater the target temperature of the inner coil of the first indoor heat exchanger, the greater the opening degree of the three-way valve.

[0088] Table 1

[0089] Outdoor temperature value (Tao, °C) ≤18 18 < Tao ≤ 25 25 < Tao Temperature difference opening degree compensation value ΔBk 20 30 40

[0090] Table 1 shows the corresponding relationship between the outdoor temperature value and the temperature difference opening degree compensation value ΔBk, referring to Table 1, generally, the greater the outdoor temperature value, the greater the temperature difference opening degree compensation value.

[0091] In some embodiments of the present application, after the air conditioner is controlled to operate in the comfortable dehumidification mode, the method further comprises: controlling the indoor fan to operate at a high wind speed

[0092] In some embodiments of the present application, after the air conditioner is controlled to operate in the comfortable dehumidification mode, the method further comprises:

[0093] Obtaining the current outdoor environment temperature;

[0094] Adjusting the rotating speed of the outdoor fan according to the current outdoor environment temperature.

[0095] In some embodiments of the present application, adjusting the rotating speed of the outdoor fan according to the current outdoor environment temperature comprises:

[0096] Determining the rotating speed of the outdoor fan corresponding to the current outdoor environment temperature according to a pre-set corresponding table of outdoor environment temperature and outdoor fan rotating speed.

[0097] Table 2

[0098] Outdoor temperature (Tao, °C) Tao ≤ 18 18 < Tao ≤ 25 25 < Tao Outdoor fan speed (r / min) 400 500 550

[0099] Table 2 is a pre-set corresponding table of outdoor environment temperature and outdoor fan rotating speed, referring to Table 2, Table 2 shows the corresponding relationship between the outdoor environment temperature and the outdoor fan rotating speed, specifically, the rotating speed of the outdoor fan will increase with the increase of the outdoor temperature.

[0100] In some embodiments of the present application, after step S204, the method further comprises: if the current indoor environment temperature is not less than or equal to the set temperature and the current environment humidity is greater than or equal to the set humidity, controlling the air conditioner to operate in a rapid dehumidification mode, wherein in the rapid dehumidification mode, the liquid inlet 210 of the three-way valve 20 is only communicated with the first liquid outlet 220, so as to achieve the effect of rapid dehumidification.

[0101] In some embodiments of the present application, step S202 of acquiring the current indoor environment temperature and the current indoor environment humidity comprises:

[0102] Acquiring the current indoor environment temperature and the current indoor environment humidity detected by the temperature detection device and the humidity detection device arranged at the indoor unit of the air conditioner.

[0103] In some embodiments of the present application, after controlling the air conditioner to operate in the comfortable dehumidification mode, the method further comprises:

[0104] When the indoor environment temperature reaches the target temperature and the indoor environment humidity reaches the target humidity, controlling the outdoor unit of the air conditioner to stop operating, and after a set time length, controlling the air conditioner as a whole to shut down.

[0105] In the set time length, the indoor fan is in an operating state.

[0106] Optionally, the set time length is 10 min.

[0107] It should be noted that the set time length can be set according to actual conditions, and the present application does not particularly limit this.

[0108] After the air conditioner interconnection module is connected with a mobile phone or other mobile device APP (referred to as mobile APP) through a wireless network, the comfortable dehumidification function is started through the mobile APP, and the target humidity and the target temperature of dehumidification can be set. The target temperature cannot exceed the highest temperature detected indoors or outdoors.

[0109] The present application provides a control method of an air conditioner. In the method provided by the present application, the current indoor environment temperature and the current indoor environment humidity are first acquired, and then it is judged whether the current indoor environment temperature is less than or equal to the set temperature and the current indoor environment humidity is greater than or equal to the set humidity. If yes, the air conditioner is controlled to operate in a comfortable dehumidification mode. In the comfortable dehumidification mode, the opening degree of the three-way valve is calculated according to the current indoor environment temperature and the current indoor environment humidity, and the three-way valve is adjusted according to the opening degree of the three-way valve. According to the technical scheme provided by the present application, the flow rates of the first refrigerant circuit and the second refrigerant circuit are controlled according to the current indoor environment humidity and the current indoor environment temperature, so that the air conditioner can achieve the effect of comfortable dehumidification, and the user experience is improved.

[0110] At this point, those skilled in the art will appreciate that although specific exemplary embodiments of the application have been described herein, the present application also encompasses many other variations or modifications in accordance with the principles of the application as set forth above. Accordingly, the scope of the present application should be understood to include all such variations and modifications.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes: Outdoor heat exchanger; A three-way valve, the inlet of which is connected to the outlet of the outdoor heat exchanger; The first indoor refrigerant flow path includes a throttling device and a first indoor heat exchanger connected in series, and the throttling device is also connected to the first liquid outlet of the three-way valve. The second indoor refrigerant flow path includes a second indoor heat exchanger, with both ends of the second indoor heat exchanger connected to the second outlet of the three-way valve and the first indoor heat exchanger, respectively. The control method includes: Get the current indoor ambient temperature and humidity; Determine whether the current indoor ambient temperature is less than or equal to the set temperature and the current indoor ambient humidity is greater than or equal to the set humidity. If so, control the air conditioner to operate in a comfortable dehumidification mode, wherein in the comfortable dehumidification mode, calculate the opening degree of the three-way valve based on the current indoor ambient temperature and the current indoor ambient humidity, and adjust the three-way valve according to the opening degree of the three-way valve; The step of calculating the opening degree of the three-way valve based on the current indoor ambient temperature and the current indoor ambient humidity includes: Calculate the target temperature of the inner coil of the first indoor heat exchanger based on the current indoor ambient temperature and the current indoor ambient humidity. The opening degree of the three-way valve is calculated based on the target temperature of the inner coil of the first indoor heat exchanger; The step of calculating the target temperature of the inner coil of the first indoor heat exchanger based on the current indoor ambient temperature and the current indoor ambient humidity includes: The target temperature of the inner coil of the first indoor heat exchanger is calculated using the following formula: Te= Tin- -ΔT,ΔT=(Hin-50)*0.1; Where Te is the target temperature of the inner coil of the first indoor heat exchanger, Tin is the current indoor ambient temperature, Hin is the current indoor ambient humidity, and ΔT is the dehumidification set temperature difference. The step of calculating the opening degree of the three-way valve based on the target temperature of the inner coil of the first indoor heat exchanger includes: The opening degree of the three-way valve is calculated using the following formula: B e =B0+ΔB,ΔB=2(Te-Tevp)*ΔB k / 3; Among them, B e B0 is the opening degree of the three-way valve, B0 is the opening degree of the three-way valve in the previous cycle, ΔB is the temperature difference opening coefficient of the three-way valve, Tevp is the current temperature of the inner coil of the first indoor heat exchanger, and ΔB is the opening degree of the three-way valve. k It is the temperature difference opening compensation value, ΔB k Determined based on outdoor temperature.

2. The control method for an air conditioner according to claim 1, characterized in that, The air conditioner also includes an indoor fan, which is disposed between the first indoor heat exchanger and the second indoor heat exchanger. as well as After controlling the air conditioner to operate in a comfortable dehumidification mode, the control method of the air conditioner further includes: controlling the indoor fan to operate at a high fan speed.

3. The control method for an air conditioner according to claim 1, characterized in that, The air conditioner also includes an outdoor fan, which is located at the outdoor heat exchanger. as well as After controlling the air conditioner to operate in a comfort dehumidification mode, the control method for the air conditioner further includes: Get the current outdoor ambient temperature; Adjust the speed of the outdoor fan according to the current outdoor ambient temperature.

4. The control method for the air conditioner according to claim 3, characterized in that, The step of adjusting the speed of the outdoor fan according to the current outdoor ambient temperature includes: The outdoor fan speed corresponding to the current outdoor ambient temperature is determined according to a pre-set correspondence table of outdoor ambient temperature and outdoor fan speed.

5. The control method for an air conditioner according to claim 1, characterized in that, After determining whether the current indoor ambient temperature is less than or equal to the set temperature and the current ambient humidity is greater than or equal to the set humidity, the control method for the air conditioner further includes: If not, control the air conditioner to operate in a rapid dehumidification mode, wherein in the rapid dehumidification mode, the liquid inlet of the three-way valve is only connected to its first liquid outlet.

6. The control method for an air conditioner according to claim 1, characterized in that, The steps to obtain the current indoor ambient temperature and humidity include: The system obtains the current indoor ambient temperature and humidity detected by the temperature detection device and humidity detection device installed at the indoor unit of the air conditioner.

7. The control method for an air conditioner according to claim 1, characterized in that, After the step of controlling the air conditioner to operate in a comfort dehumidification mode, the control method for the air conditioner further includes; When the indoor temperature and humidity reach the target levels, the outdoor unit of the air conditioner will stop operating, and the entire air conditioner will be shut down after a set time.

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