Control method of air conditioner

Abstract

According to the control method of the air conditioner, the current indoor environment temperature and the current indoor environment humidity are obtained firstly, then whether the current indoor environment temperature is smaller than or equal to the set temperature or not and whether the current indoor environment humidity is larger than or equal to the set humidity or not are judged, and if yes, the air conditioner is started. 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. The flow of the first refrigerant loop and the flow of the second refrigerant loop are controlled according to the current indoor environment humidity and the current indoor environment temperature, the air conditioner can achieve the comfortable dehumidification effect, and the user experience degree is improved.

Description

Technical Field

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

[0002] The existing air conditioner indoor heat exchangers are designed with emphasis on heat exchange efficiency and assembly process, so they usually only have specific properties of cooling and heating. When the user uses the air conditioner dehumidification mode (the indoor heat exchanger exerts its cooling properties), in order to achieve the dehumidification effect, the surface temperature of the indoor heat exchanger is relatively low, and the air outlet temperature of the air conditioner is very low.

[0003] When used in special seasons in the southern region, such as the rainy season or the return of the south wind season, the low air outlet temperature will aggravate the user's discomfort in the indoor experience. How to avoid excessive reduction of indoor ambient temperature while satisfying the dehumidification effect is an urgent problem to be solved. Summary of the invention

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

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

[0006] In particular, the present invention provides a method for controlling an air conditioner, the air conditioner comprising:

[0007] Outdoor heat exchanger;

[0008] A three-way valve, the liquid inlet of which is connected to the liquid outlet of the outdoor heat exchanger;

[0009] A first indoor refrigerant flow path includes a throttling device and a first indoor heat exchanger connected in series, wherein the throttling device is also connected to a first liquid outlet of the three-way valve;

[0010] The second indoor refrigerant flow path includes a second indoor heat exchanger, and two ends of the second indoor heat exchanger are respectively connected to the second liquid outlet of the three-way valve and the first indoor heat exchanger, and the control method includes:

[0011] Get the current indoor ambient temperature and the current indoor ambient humidity;

[0012] 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;

[0013] If so, control the air conditioner to operate in a comfortable dehumidification mode, wherein, in the comfortable dehumidification mode, the opening 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 of the three-way valve.

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

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

[0016] The opening degree of the three-way valve is calculated 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 ambient temperature and the current indoor ambient humidity includes:

[0018] The target temperature of the inner coil of the first indoor heat exchanger is calculated 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 ambient temperature, Hin is the current indoor ambient humidity, and ΔT is the 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] The opening of the three-way valve is calculated according to the following formula:

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

[0024] Among them, B e is the opening of the three-way valve, B0 is the opening 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, ΔB k is the temperature difference opening compensation value, ΔB k Determined according to the 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 controlling the air conditioner to operate in a comfortable dehumidification mode, the method further includes: controlling the indoor fan to operate at a high wind speed.

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

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

[0029] Get the current outdoor ambient temperature;

[0030] The rotation speed of the outdoor fan is adjusted according to the current outdoor ambient temperature.

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

[0032] The speed of the outdoor fan corresponding to the current outdoor ambient temperature is determined according to a preset correspondence table of outdoor ambient temperature and outdoor fan speed.

[0033] Optionally, after the step of 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 method further includes:

[0034] If not, the air conditioner is controlled 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 the first liquid outlet thereof.

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

[0036] The current indoor environment temperature and the current indoor environment humidity respectively detected by the temperature detection device and the humidity detection device arranged at the indoor unit of the air conditioner are obtained.

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

[0038] When the indoor ambient temperature reaches the target temperature and the indoor ambient humidity reaches the target humidity, the outdoor unit of the air conditioner is controlled to stop running, and the entire air conditioner is controlled to shut down after the set time.

[0039] In the method proposed by the present invention, the current indoor ambient temperature and the current indoor ambient humidity are first obtained, and then it is determined 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, the air conditioner is controlled to operate in a comfortable dehumidification mode. In the comfortable dehumidification mode, the opening 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 of the three-way valve. Based on the technical solution provided by the present invention, the flow rates of the first refrigerant circuit and the second refrigerant circuit are controlled according to the current indoor ambient humidity and the current indoor ambient temperature, so that the air conditioner can achieve a comfortable dehumidification effect and improve the user experience.

[0040] Furthermore, if the current indoor ambient temperature is not less than or equal to the set temperature and the current indoor ambient humidity is greater than or equal to the set humidity, the air conditioner is controlled to operate in rapid dehumidification mode. In the rapid dehumidification mode, the liquid inlet of the three-way valve is only connected to its first liquid outlet, so that the air conditioner can achieve a rapid dehumidification effect.

[0041] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below.

[0042] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0044] Figure 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

[0045] Figure 2 1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] Refer to the following Figure 1 and Figure 2 The air conditioner and the control method thereof according to the embodiment of the present invention are described. The directions or positional relationships indicated by “front”, “rear”, “up”, “down”, “top”, “bottom”, “inside”, “outside”, “lateral”, etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention.

[0047] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0048] Figure 1 FIG. 1 is a schematic structural diagram of an air conditioner 1 according to an embodiment of the present invention. Figure 1 As shown, the air conditioner 1 proposed by the present invention may 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. 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 connected to the liquid outlet of the outdoor heat exchanger 10. The first indoor refrigerant flow path 30 includes a throttling device 310, a liquid separator 320 and a first indoor heat exchanger 330 connected in series, and the throttling device 310 is also connected to 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 connected to the second liquid outlet 230 of the three-way valve 20 and the liquid inlet 210 of the liquid separator 320. Among them, the liquid inlet 210 of the three-way valve 20 is configured to be controlled to be connected to its first liquid outlet 220 and / or the second liquid outlet 230, so that the first indoor refrigerant flow path 30 and / or the second indoor refrigerant flow path 40 are connected.

[0050] The throttling device 310 may optionally be a throttle valve.

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

[0052] The liquid outlet of the three-way valve 20 is connected to the first liquid outlet 220 and the second liquid outlet 230 thereof, the first indoor refrigerant flow path 30 and the second indoor refrigerant flow path 40 are connected, 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 temperature of the refrigerant entering the second indoor heat exchanger 410 is relatively high, and the temperature of the indoor air will increase after heat exchange. The refrigerant entering the second indoor heat exchanger 410 will return to the outdoor unit through the first indoor heat exchanger 330, and the two parts of the refrigerant will be mixed in the first indoor heat exchanger 330, and the temperature after mixing is in the middle. In this way, the air conditioner 1 can not only complete the dehumidification function, but also avoid the indoor temperature from continuously decreasing due to the excessively low outlet temperature, which affects the user experience. The air conditioner 1 is in a constant temperature dehumidification state, which improves the user experience.

[0053] The present invention controls the liquid inlet 210 of the three-way valve 20 to be connected with the first liquid outlet 220 and / or the second liquid outlet 230 thereof, thereby being able to switch between multiple dehumidification modes.

[0054] In some embodiments of the present invention, the first indoor refrigerant flow path 30 further includes a first liquid inlet pipeline 340, a second liquid inlet pipeline 350, a third liquid inlet pipeline 360, a fourth liquid inlet pipeline 370 and a fifth liquid inlet pipeline 380. Among them, the liquid inlets 210 of the first liquid inlet pipeline 340, the second liquid inlet pipeline 350, the third liquid inlet pipeline 360, the fourth liquid inlet pipeline 370 and the fifth liquid inlet pipeline 380 are all connected to the liquid outlet of the liquid separation device 320, and the liquid outlets of the first liquid inlet pipeline 340, the second liquid inlet pipeline 350, the third liquid inlet pipeline 360, the fourth liquid inlet pipeline 370 and the fifth liquid inlet pipeline 380 are connected to the first indoor heat exchanger 330.

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

[0056] Among them, the arrangement of multiple liquid inlets 210 on the first indoor heat exchanger 330 allows the refrigerant to flow evenly in the inner shell of the first heat exchanger, thereby improving the dehumidification effect of the first heat exchanger.

[0057] In some embodiments of the present invention, the first indoor refrigerant flow circuit 30 also includes a first liquid outlet pipeline 390, a second liquid outlet pipeline 391, a third liquid outlet pipeline 392, a fourth liquid outlet pipeline 393 and a fifth liquid outlet pipeline 394, wherein the liquid inlet 210 of the first liquid outlet pipeline 390, the second liquid outlet pipeline 391, the third liquid outlet pipeline 392, the fourth liquid outlet pipeline 393 and the fifth liquid outlet pipeline 394 is connected to the first indoor heat exchanger 330, and the liquid outlets of the first liquid outlet pipeline 390, the second liquid outlet pipeline, the third liquid outlet pipeline 392, the fourth liquid outlet pipeline 393 and the fifth liquid outlet pipeline 394 are connected in series with the four-way valve 300, the compressor 200 and the liquid inlet 210 of the outdoor heat exchanger 10 in sequence.

[0058] Among them, a plurality of liquid outlets are arranged along the length direction on the other side of the first indoor heat exchanger 330, and the plurality of liquid outlets on the first indoor heat exchanger 330 correspond to the positions of 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 connected to the first liquid outlet pipeline 390, the second liquid outlet pipeline 391, the third liquid outlet pipeline 392, the fourth liquid outlet pipeline 393 and the fifth liquid outlet pipeline 394.

[0059] In some embodiments of the present invention, the second indoor refrigerant flow path 40 further includes a sixth liquid inlet pipeline 420 and a sixth liquid outlet pipeline 430. The second liquid outlet 230 of the three-way valve 20, the sixth liquid inlet pipeline 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 pipeline 430 and the liquid inlet 210 of the liquid separation device 320 are sequentially connected in series.

[0060] In some embodiments of the present invention, a one-way stop valve 50 is provided on the sixth liquid outlet pipeline 430. The one-way stop valve 50 can play a check function.

[0061] In some embodiments of the invention, the air conditioner 1 further comprises an outdoor fan 60, which is arranged at the outdoor heat exchanger 10. 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 that the outdoor unit can effectively dissipate heat.

[0062] In some embodiments of the present invention, the air conditioner 1 further includes an indoor fan 70, which is disposed between the first indoor heat exchanger 330 and the second indoor heat exchanger 410. The indoor fan 70 is mainly used to drive the air near the first indoor heat exchanger 330 and the second indoor heat exchanger 410 that has been heat exchanged by the first heat exchanger and the second heat exchanger to form an airflow toward the indoor environment.

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

[0064] In some embodiments of the present invention, the air conditioner 1 further includes a first inner coil 90 , which is disposed in the first indoor heat exchanger 330 .

[0065] In some embodiments of the present invention, the air conditioner 1 further includes a second inner coil 100 , and the second inner coil 100 is disposed in the second indoor heat exchanger 410 .

[0066] Figure 2 FIG. 1 is a flow chart of a control method for an air conditioner 1 according to an embodiment of the present invention. Figure 2 As shown, the present invention further proposes a control method based on the above air conditioner 1, and the method at least includes the following steps S202-S206.

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

[0068] Step S204: determining 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;

[0069] Step S206: If yes, control the air conditioner 1 to operate in the comfort dehumidification mode, wherein in the comfort dehumidification mode, the opening of the three-way valve 20 is calculated according to the current indoor ambient temperature and the current indoor ambient humidity, and the three-way valve 20 is adjusted according to the opening of the three-way valve 20.

[0070] Among them, the opening range of the three-way valve is 0-1000. When the opening is 0, the three-way valve is in a fully closed state; when the opening is 1000, the three-way valve is in a fully open state. At this time, the refrigerant flow distribution ratio after flowing through the three-way valve is 1:1 (the flow ratio through the three-way valve to the first indoor heat exchanger and the second indoor heat exchanger is 1:1). The larger the opening of the three-way valve, the greater the flow through the second refrigerant circuit.

[0071] In the embodiment of the present invention, the current indoor ambient temperature and the current indoor ambient humidity are first obtained, and then it is determined 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, the air conditioner 1 is controlled to operate in a comfortable dehumidification mode. In the comfortable dehumidification mode, the opening of the three-way valve 20 is calculated according to the current indoor ambient temperature and the current indoor ambient humidity, and the three-way valve 20 is adjusted according to the opening of the three-way valve 20. Based on the technical solution provided by the present invention, the flow rates of the first refrigerant circuit and the second refrigerant circuit are controlled according to the current indoor ambient humidity and the current indoor ambient temperature, so that the air conditioner 1 can 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 invention does not specifically limit this.

[0073] In some embodiments of the present invention, the step S206 of calculating the opening of the three-way valve 20 according to the current indoor ambient temperature and the current indoor ambient humidity includes:

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

[0075] The opening degree of the three-way valve 20 is calculated based on the target temperature of the inner coil of the first indoor heat exchanger 330 .

[0076] In some embodiments of the present invention, the target temperature of the inner coil of the first indoor heat exchanger 330 is calculated according to the current indoor ambient temperature and the current indoor ambient humidity, including:

[0077] The target temperature of the inner coil of the first indoor heat exchanger 330 is calculated 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 ambient temperature, Hin is the current indoor ambient humidity, and ΔT is the dehumidification set temperature difference.

[0080] Here, Hin specifically represents relative humidity. If Hin is 60%, for example, the value substituted into the formula is 60.

[0081] According to the above formula, when the current indoor ambient temperature is constant, the higher the current indoor ambient humidity, the higher the target temperature of the inner coil of the first indoor heat exchanger; the lower the current indoor ambient humidity, the lower the target temperature of the inner coil of the first indoor heat exchanger.

[0082] When the current indoor ambient humidity is constant, the higher the current indoor ambient temperature is, the higher the target temperature of the inner coil of the first indoor heat exchanger is; and the lower the current indoor ambient temperature is, the lower the target temperature of the inner coil of the first indoor heat exchanger is.

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

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

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

[0086] Among them, B e is the opening of the three-way valve, B0 is the opening 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, ΔB k It is the temperature difference opening 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 of the three-way valve.

[0088] Table 1

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

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

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

[0092] In some embodiments of the present invention, after controlling the air conditioner to operate in the comfort dehumidification mode, the method further includes:

[0093] Get the current outdoor ambient temperature;

[0094] Adjust the speed of the outdoor fan according to the current outdoor ambient temperature.

[0095] In some embodiments of the present invention, adjusting the speed of the outdoor fan according to the current outdoor ambient temperature includes:

[0096] The speed of the outdoor fan corresponding to the current outdoor ambient temperature is determined according to a preset correspondence table of the outdoor ambient temperature and the outdoor fan speed.

[0097] Table 2

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

[0099] Table 2 is a correspondence table of pre-set outdoor ambient temperature and outdoor fan speed. Referring to Table 2, Table 2 shows the correspondence between the outdoor ambient temperature and the outdoor fan speed. Specifically, the outdoor fan speed increases with the increase of the outdoor temperature.

[0100] In some embodiments of the present invention, after the above step S204, the method further includes: if the current indoor ambient temperature is not less than or equal to the set temperature and the current ambient 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 connected to its first liquid outlet 220, thereby achieving a rapid dehumidification effect.

[0101] In some embodiments of the present invention, step S202 mentions obtaining the current indoor ambient temperature and the current indoor ambient humidity, including:

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

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

[0104] When the indoor ambient temperature reaches the target temperature and the indoor ambient humidity reaches the target humidity, the outdoor unit of the air conditioner is controlled to stop running, and the entire air conditioner is controlled to shut down after the set time.

[0105] Among them, the indoor fan is in operation within the set time period.

[0106] Optionally, the set duration is 10 minutes.

[0107] It should be noted that the set duration can be set according to actual conditions, and the present invention does not make any special limitation on this.

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

[0109] The present invention proposes a control method for an air conditioner. In the method proposed by the present invention, the current indoor ambient temperature and the current indoor ambient humidity are first obtained, and then it is determined 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, the air conditioner is controlled to operate in a comfortable dehumidification mode. In the comfortable dehumidification mode, the opening 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 of the three-way valve. Based on the technical solution provided by the present invention, the flow of the first refrigerant circuit and the second refrigerant circuit is controlled according to the current indoor ambient humidity and the current indoor ambient temperature, so that the air conditioner can achieve the effect of comfortable dehumidification and improve the user experience.

[0110] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises: Outdoor heat exchanger; A three-way valve, the liquid inlet of which is connected to the liquid outlet of the outdoor heat exchanger; A first indoor refrigerant flow path includes a throttling device and a first indoor heat exchanger connected in series, wherein the throttling device is also connected to a first liquid outlet of the three-way valve; The second indoor refrigerant flow path includes a second indoor heat exchanger, and two ends of the second indoor heat exchanger are respectively connected to the second liquid outlet of the three-way valve and the first indoor heat exchanger, and the control method includes: Get the current indoor ambient temperature and the current indoor ambient 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, the opening 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 of the three-way valve.

2. The control method according to claim 1, characterized in that: The step of calculating the opening of the three-way valve according to the current indoor ambient temperature and the current indoor ambient humidity comprises: Calculating a target temperature of the inner coil of the first indoor heat exchanger according to the current indoor ambient temperature and the current indoor ambient humidity; The opening degree of the three-way valve is calculated according to the target temperature of the inner coil of the first indoor heat exchanger.

3. The control method according to claim 2, characterized in that: The step of calculating the target temperature of the inner coil of the first indoor heat exchanger according to the current indoor ambient temperature and the current indoor ambient humidity comprises: The target temperature of the inner coil of the first indoor heat exchanger is calculated according to the following formula: Wherein, 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.

4. The control method according to claim 3, characterized in that: 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: The opening of the three-way valve is calculated according to the following formula: B e =B0+ΔB,ΔB=2(Te-Tevp)*ΔB k / 3; Among them, B e is the opening of the three-way valve, B0 is the opening 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, ΔB k is the temperature difference opening compensation value, ΔB k Determined according to the outdoor temperature value.

5. The control method according to claim 1, characterized in that: 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; as well as After controlling the air conditioner to operate in a comfortable dehumidification mode, the method further includes: controlling the indoor fan to operate at a high wind speed.

6. The control method according to claim 1, characterized in that: The air conditioner further comprises an outdoor fan, and the outdoor fan is arranged at the outdoor heat exchanger; as well as After controlling the air conditioner to operate in a comfortable dehumidification mode, the method further includes: Get the current outdoor ambient temperature; The rotation speed of the outdoor fan is adjusted according to the current outdoor ambient temperature.

7. The control method according to claim 6, characterized in that: The step of adjusting the rotation speed of the outdoor fan according to the current outdoor ambient temperature comprises: The speed of the outdoor fan corresponding to the current outdoor ambient temperature is determined according to a preset correspondence table of outdoor ambient temperature and outdoor fan speed.

8. The control method according to claim 1, characterized in that: After the step of 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 method further includes: If not, the air conditioner is controlled 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 the first liquid outlet thereof.

9. The control method according to claim 1, characterized in that: The steps for obtaining the current indoor ambient temperature and the current indoor ambient humidity include: The current indoor environment temperature and the current indoor environment humidity respectively detected by the temperature detection device and the humidity detection device arranged at the indoor unit of the air conditioner are obtained.

10. The control method according to claim 1, characterized in that: After the step of controlling the air conditioner to operate in a comfort dehumidification mode, the method further comprises: When the indoor ambient temperature reaches the target temperature and the indoor ambient humidity reaches the target humidity, the outdoor unit of the air conditioner is controlled to stop running, and the entire air conditioner is controlled to shut down after the set time.

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