WO2018176333A1

WO2018176333A1 - Indoor unit of air conditioner, and control method thereof

Info

Publication number: WO2018176333A1
Application number: PCT/CN2017/078824
Authority: WO
Inventors: 申孟亮
Original assignee: 广东美的制冷设备有限公司; 美的集团股份有限公司
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2018-10-04

Abstract

An indoor unit of an air conditioner, and control method thereof. The indoor unit of an air conditioner comprises: a housing (10) and a heat exchange component provided within the housing (10). The housing (10) is provided with a first air channel and a second air channel, both in communication with the heat exchange component. The housing (10) has portions of a first section (11) and a second section (12). An air outlet opening (20) and a return air opening (30) of the first air channel are provided on the first section (11) of the housing (10). An air outlet opening (40) and a return air opening (50) of the second air channel is provided on the second section (12) of the housing (10). Cooling of one room is performed by means of air supply and air return of the first air channel, and cooling of another room is performed by means of air supply and air return of the second air channel, thus achieving cooling of two rooms at the same time, and improving cooling efficiency.

Description

Air conditioner indoor unit and control method thereof

Technical field

The present invention relates to the field of air conditioner technology, and in particular, to an air conditioner indoor unit and a control method thereof.

Background technique

In some areas, due to economic constraints and the need for air conditioning at the same time, these users will use two air conditioners to cool the two rooms at the same time. The existing air conditioner air outlets are generally designed for front air outlets, when users need to wear them. When the wall is installed and the two rooms are cooled, some of the air outlets are blocked, resulting in poor cooling efficiency.

Summary of the invention

The invention provides an indoor unit of an air conditioner and a control method thereof, and the main purpose thereof is to solve the technical problem that a single air conditioner simultaneously cools two rooms and has low cooling efficiency.

In order to achieve the above object, the present invention provides an indoor unit of an air conditioner, the indoor unit of the air conditioner including a housing and a heat exchange assembly disposed in the housing; the housing is provided with a communication with the heat exchange assembly a first air duct and a second air duct, wherein the casing is a first section and a second section, and an air outlet and a return air outlet of the first air duct are disposed on the first section of the casing. The air outlet and the return air outlet of the second air duct are disposed on the second section of the casing.

Optionally, the heat exchange component includes a first heat exchanger and a second heat exchanger disposed in parallel, the first heat exchanger is located in the first air duct, and the second heat exchanger is located in the Inside the second air duct.

Optionally, the air conditioner indoor unit further includes a first distributor and a second distributor; a first end of the first dispenser is connected to a throttle member of the air conditioner, and a second of the first dispenser The end is connected to the first heat exchanger, the third end of the first distributor is connected to the second heat exchanger, and the refrigerant flowing in from the first end is evenly distributed to the second end and a three-terminal outflow; a first end of the second distributor is connected to the four-way valve of the air conditioner, and a second end of the second distributor is connected to the first heat exchanger, the second distribution The third end of the device is connected to the second heat exchanger, and the refrigerant flowing in from the first end is evenly distributed to the second end and the third end to flow out.

Optionally, the first dispenser and the second dispenser are tees.

Optionally, an indoor fan is disposed in the first air channel and the second air channel, respectively.

Optionally, the air conditioner indoor unit further includes a control chip electrically connected to the indoor fan of the control chip; the control chip is configured to determine an indoor fan controlled by the control signal when receiving the control signal, and according to the receiving The incoming control signal controls the corresponding indoor fan.

Optionally, the air conditioner indoor unit further includes a communication module connected to the control chip, and the control chip is configured to acquire a remote control for transmitting the control signal when the communication module receives the control signal sent by the remote controller. The device information corresponding to the device determines an indoor fan controlled by the control signal according to the device information.

Optionally, the housing includes opposite front and rear end faces, an upper end surface and a lower end surface, and a left end surface and a right end surface, the left end surface is located at a first section of the housing, and the right end surface is located at the shell The second paragraph of the body.

Optionally, the housing includes opposite front and rear panels, upper and lower panels, and left and right panels, the left panel being located in a first section of the housing, the right panel Located in the second section of the housing.

Optionally, an air outlet of the first air duct is located at the left end surface, an air outlet of the second air duct is located at the right end surface, a return air outlet of the first air duct, and the second air duct The return air outlets are all located at a front end surface of the casing, and a certain distance between the air return opening of the first air passage and the air return opening of the second air passage.

Optionally, a return air outlet of the first air duct is located at the left end surface, a return air outlet of the second air duct is located at the right end surface, an air outlet of the first air duct, and the second air duct The air outlets are all located at a front end surface of the casing, and a certain distance between the air outlet of the first air duct and the air outlet of the second air duct.

Optionally, the air return port of the first air channel and the air return port of the second air channel are both located at an upper end surface of the housing, and the air return port of the first air channel and the second air channel There is a certain distance between the air return openings; the air outlets of the first air duct and the air outlets of the second air duct are located at a lower end surface of the casing, and the air outlet of the first air duct and the There is a certain distance between the air outlets of the second air duct.

Optionally, an air outlet of the first air duct and an air outlet of the second air duct are located at an upper end surface of the casing, and an air outlet of the first air duct and the second air duct a certain distance between the air outlets; the return air outlet of the first air duct and the air return opening of the second air duct are located at a lower end surface of the casing, and the air return port 30 of the first air duct and There is a certain distance between the air return openings 50 of the second air duct.

Optionally, an air outlet of the first air duct is located at the left end surface, an air outlet of the second air duct is located at the right end surface, a return air outlet of the first air duct, and the second air duct The return air outlets are all located at an upper end surface of the casing, and a certain distance between the return air outlet of the first air passage and the air return opening of the second air passage.

Optionally, the air conditioner indoor unit is the air conditioner indoor unit according to claim 6, and the control scheme of the air conditioner indoor unit includes:

Determining an indoor fan controlled by the control signal when receiving the control signal;

The corresponding indoor fan is controlled according to the received control signal.

Optionally, the step of determining the indoor fan controlled by the control signal comprises:

When the communication module receives the control signal sent by the remote controller, acquiring device information corresponding to the remote controller that sends the control signal;

The indoor fan controlled by the control signal is determined according to the device information.

Optionally, a communication module is disposed in each of the first segment and the second segment of the outer casing, and the step of determining the indoor fan controlled by the control signal comprises:

a communication module that determines the received control signal when the communication module receives the control signal;

The indoor fan corresponding to the communication module is used as an indoor fan controlled by a control signal.

The air conditioner indoor unit and the control method thereof are provided. The housing of the indoor unit of the air conditioner is divided into two sections, and each section is provided with an independent air outlet and a return air outlet, that is, the air inlet and the return air can be separately performed. Heat exchange with the heat exchange component to achieve cooling or heating, the user can chill the room through the air inlet and return air of the first air duct by erecting the middle of the casing on the wall between the two rooms. Cooling a room through the air inlet and return air of the second air duct, achieving simultaneous cooling of the two rooms, improving the cooling efficiency.

DRAWINGS

1 is a schematic perspective view showing the indoor unit of an air conditioner of the present invention;

2 is a view showing a refrigeration system corresponding to an indoor unit of an air conditioner of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides an indoor unit of an air conditioner.

1 is a perspective view showing the structure of an indoor unit of an air conditioner according to the present invention.

The embodiment provides an indoor unit of an air conditioner, the indoor unit of the air conditioner includes a housing 10 and a heat exchange component disposed in the housing 10; the housing 10 is provided with a communication with the heat exchange component a first air duct (not shown) and a second air duct (not shown), wherein the housing 10 is composed of a first section 11 and a second section 12, the first air duct An air outlet 20 and a return air outlet 30 (not shown) (not shown) are provided on the first section 11 of the casing 10, and the second air duct (not shown) The air outlet 40 and the return air port 50 are provided on the second section 12 of the casing 10.

The first section 11 and the second section 12 of the housing 10 constitute a completed housing 10 of the air conditioner indoor unit, and the heat exchange assembly may include a large heat exchanger having two ends respectively The air duct (not shown) communicates with the second air duct (not shown) to achieve heat exchange, or two heat exchangers may be disposed, and the two heat exchangers are respectively located in the first air duct (in the figure) Heat exchange is achieved within the second air duct (not shown) and not shown.

The air outlet 20 and the return air port 30 of the first air passage (not shown) on the casing 10 of the air conditioner indoor unit and the air outlet 20 and the return air port 30 of the second air duct (not shown) There is a certain distance between the air outlets 20 and the air outlets 30 of the first air duct (not shown) and the air outlets of the second air duct (not shown) after installing the air conditioner. 20 and return air outlet 30. The structure of the air outlet 20 and the air return port 30 of the first air duct (not shown) is the same as that of the air outlet and the air return port of the prior art, and the second air duct (not shown) is similar. I will not repeat them here.

According to the air conditioner indoor unit proposed by the present invention, the casing 10 is divided into two sections, and each section is provided with an independent air outlet and a return air outlet, that is, the air inlet and the return air can be separately performed to exchange heat with the heat exchange component. For cooling or heating, the user can cool a room by the air inlet and return air of the first air passage (not shown) by erecting the middle of the casing 10 on the wall between the two rooms. A room is cooled by the air inlet and return air of the second air duct (not shown), and the two rooms are simultaneously cooled to improve the cooling efficiency.

Further, referring to FIG. 2 on the basis of FIG. 1, the heat exchange assembly includes a first heat exchanger 60 and a second heat exchanger 70 disposed in parallel, and the first heat exchanger 60 is located in the first wind Within the track (not shown), the second heat exchanger 70 is located within the second air passage (not shown).

By paralleling the first heat exchanger 60 and the second heat exchanger 70, the heat exchange efficiency of the first heat exchanger 60 with the second heat exchanger 70 is not much different, and the first air passage (not shown) is discharged. The air flowing in the tuyere 20 and the return air port 30 exchanges heat through the first heat exchanger 60 to realize heat exchange in the first room (such as cooling and heating), and the air outlet 40 of the second air passage (not shown) The air flowing in the return air port 50 exchanges heat through the second heat exchanger 70 to realize heat exchange (e.g., cooling and heating) in the second room.

It can be understood that, in order to ensure that the cooling capacity of the refrigerant in the first heat exchanger 60 and the second heat exchanger 70 is the same to ensure the heat exchange efficiency, the distribution flow distribution can be realized by the flow distribution device, that is, the distributor, ensuring the first The flow rate of the heat exchanger 60 and the second heat exchanger 70 is equivalent, that is, the air conditioner indoor unit further includes a first distributor 80 and a second distributor 90; the first end of the first distributor 80 and the air conditioner The throttle unit 100 is connected, the second end of the first distributor 80 is connected to the first heat exchanger 60, and the third end of the first distributor 80 is connected to the second heat exchanger 70. The refrigerant flowing in from the first end is evenly distributed to the second end and the third end; the first end of the second distributor 90 is connected to the four-way valve 110 of the air conditioner, the first The second end of the second distributor 90 is connected to the first heat exchanger 60, and the third end of the second distributor 90 is connected to the second heat exchanger 70, and the refrigerant flowing in from the first end Evenly distributed to the second end and the third end flows out.

The first distributor 80 and the second distributor 90 may be a three-way pipe. The three-way pipe may be Y-shaped, T-shaped, or may have other shapes, such as the first distributor 80 and the first heat exchanger. The two branch pipes that communicate with the second heat exchanger 70 are U-shaped, and the branch pipe connected to the throttle member 100 communicates with the U-shaped pipe.

Further, since it may be necessary to separately control the cooling or heating of the two rooms, the first air duct (not shown) and the second air duct (not shown) are respectively provided with indoors. Fan. After the indoor fan in the first air passage (not shown) is closed, the cooling of the air outlet 20 and the air return port 30 of the first air passage (not shown) may be stopped, and the second is started. The indoor fan in the air duct (not shown) cools the room where the air outlet 40 and the air return port 50 of the second air duct (not shown) are located, and realizes separate control of the two rooms.

Further, in order to realize intelligent control of the air conditioner, the air conditioner indoor unit further includes a control chip electrically connected to the indoor fan of the control chip; the control chip is configured to determine a control signal when receiving the control signal The controlled indoor fan controls the corresponding indoor fan according to the received control signal.

The above-mentioned separate control of the air conditioner can be realized by different remote controllers, that is, the air conditioner indoor unit further includes a communication module connected to the control chip, and the control chip is used by the communication module to receive the remote controller transmitting When the signal is controlled, the device information corresponding to the remote controller that transmits the control signal is acquired, and the indoor fan controlled by the control signal is determined according to the device information. The communication module can be an infrared module or a Bluetooth module.

Alternatively, it may be implemented by other means, for example, a communication module is disposed in the first segment 11 and the second segment of the outer casing, and when the communication module receives the control signal, the communication module that determines the received control signal is The indoor fan corresponding to the communication module is used as an indoor fan controlled by a control signal.

In the technical solution disclosed in this embodiment, the individual cooling of different rooms is realized by the control chip, and the accuracy of the control of the air conditioner is improved.

Further, the housing 10 includes opposite front and rear end faces, upper and lower end faces, and a left end face and a right end face. The left end face is located at the first section 11 of the housing 10, and the right end face is located at the The second section 12 of the housing 10.

An air outlet 20 and a return air outlet 30 of a first air passage (not shown) and an air outlet 40 and a return air outlet 50 of a second air passage (not shown) may be disposed at each end surface of the casing 10 as long as It is ensured that the air outlet 20 and the return air outlet 30 of the first air duct (not shown) are located in the first section 11 of the casing 10 and the air outlet 40 and the return air outlet 50 of the second air duct (not shown) are located. a second section 12 of the housing 10, and between the air outlet 20 of the first air duct (not shown) and the air outlet 40 of the second air duct (not shown), and the first air duct (figure There is a certain distance between the return air port 30 of the second air duct (not shown) and the air return port 50 of the second air duct (not shown).

The housing 10 can include opposing front and rear panels, upper and lower panels, and left and right side panels, the left side panels being located in a first section 11 of the housing 10, the right side panel being located The second section 12 of the casing 10; the front panel and the upper panel are integrally formed, and the rear panel and the lower panel are integrally assembled with the left side panel and the right side panel to form the housing 10, and the specific assembly manner can be provided by the user. Set according to assembly requirements.

The position of the air outlet 20 and the return air outlet 30 of the first air passage (not shown) and the air outlet 40 and the return air outlet 50 of the second air passage (not shown) are exemplified below to facilitate understanding. this invention:

1) an air outlet 20 of the first air duct (not shown) is located at the left end surface, and an air outlet 40 of the second air duct (not shown) is located at the right end surface; a return air outlet 30 of a first air passage (not shown) and a return air outlet 50 of the second air passage (not shown) are located at a front end surface of the casing 10, and the first wind There is a certain distance between the return air port 30 of the track (not shown) and the return air port 50 of the second air duct (not shown).

The position of the air outlet 20 and the return air outlet 30 of the first air passage (not shown) may be reversed, and the positions of the air outlet 40 and the return air outlet 50 of the second air passage (not shown) may also be exchanged. For example, a return air outlet 30 of the first air passage (not shown) is located at the left end surface, and a return air outlet 50 of the second air passage (not shown) is located at the right end surface; An air outlet 20 of a first air duct (not shown) and an air outlet 40 of the second air duct (not shown) are located at a front end surface of the casing 10, and the first wind There is a certain distance between the air outlet 20 of the road (not shown) and the air outlet 40 of the second air duct (not shown).

2) the return air outlet 30 of the first air duct (not shown) and the air return opening 50 of the second air duct (not shown) are located at the upper end surface of the housing 10, and There is a certain distance between the return air inlet 30 of the first air passage (not shown) and the air return opening 50 of the second air passage (not shown); the first air passage (in the figure) An air outlet 20 not shown) and an air outlet 40 of the second air duct (not shown) are located at a lower end surface of the casing 10, the first air passage (not shown) There is a certain distance between the air outlet 20 and the air outlet 40 of the second air duct (not shown).

The position of the air outlet 20 and the return air outlet 30 of the first air passage (not shown) may be reversed, and the positions of the air outlet 40 and the return air outlet 50 of the second air passage (not shown) may also be exchanged. For example, an air outlet 20 of the first air duct (not shown) and an air outlet 40 of the second air duct (not shown) are located at an upper end surface of the housing 10, and a certain distance between the air outlet 20 of the first air duct (not shown) and the air outlet 40 of the second air duct (not shown); the first air duct (figure The return air outlet 30 of the second air duct (not shown) and the return air outlet 50 of the second air duct (not shown) are located at the lower end surface of the casing 10, the first air duct (not shown) There is a certain distance between the return air port 30 and the air return port 50 of the second air duct (not shown).

3) an air outlet 20 of the first air duct (not shown) is located at the left end surface, and an air outlet 40 of the second air duct (not shown) is located at the right end surface; A return air outlet 30 of a first air passage (not shown) and a return air outlet 50 of the second air passage (not shown) are located at an upper end surface of the casing 10, and the first wind a return distance between the return air outlet 30 of the road (not shown) and the return air outlet 50 of the second air passage (not shown); or the first air passage (not shown) The air outlet 20 of the outlet is located at the left end surface, and the air outlet 40 of the second air passage (not shown) is located at the right end surface; the back of the first air passage (not shown) The tuyere 30 and the return air outlet 50 of the second air duct (not shown) are located at a lower end surface of the casing 10, and the air return port 30 of the first air duct (not shown) and There is a certain distance between the air return openings 50 of the second air duct (not shown).

The above is only an example of the position of the air outlet 20 and the return air outlet 30 of the first air duct (not shown) and the air outlet 40 and the return air outlet 50 of the second air duct (not shown), first. The positions of the air outlet 20 and the return air port 30 of the air duct (not shown) and the air outlet 40 and the air return port 50 of the second air duct (not shown) are not limited to the above-exemplified positions.

The invention also provides a control method for an indoor unit of an air conditioner, the air conditioner control scheme comprising:

The indoor unit of the air conditioner is the air conditioner indoor unit described above, and will not be described herein.

The step of determining an indoor fan controlled by the control signal includes:

Alternatively, a communication module is disposed in each of the first segment 11 and the second segment of the outer casing, and the step of determining the indoor fan controlled by the control signal comprises: determining, when the communication module receives the control signal, the received control signal a communication module; an indoor fan controlled by the communication module corresponding to the indoor fan as a control signal.

The air conditioner control method realizes separate control of different rooms by separately controlling two indoor fans so that the cooling capacities of different air ducts are different.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a cloud server, an air conditioner, or a network device, etc.) to perform the methods of various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

An indoor unit of an air conditioner, comprising: a housing; and a heat exchange component disposed in the housing; wherein the housing is provided with a first air passage communicating with the heat exchange component And a second air duct, wherein the housing is a first portion and a second portion, wherein the air outlet and the return air outlet of the first air passage are disposed on the first portion of the housing, the second The air outlet and the return air outlet of the air duct are disposed on the second section of the casing.
The indoor unit of an air conditioner according to claim 1, wherein said heat exchange unit comprises a first heat exchanger and a second heat exchanger disposed in parallel, said first heat exchanger being located in said first wind In the track, the second heat exchanger is located in the second air duct.
The indoor unit of an air conditioner according to claim 2, wherein said air conditioner indoor unit further comprises a first distributor and a second distributor; and the first end of said first distributor and the air conditioner are throttled Connecting the components, the second end of the first distributor is connected to the first heat exchanger, the third end of the first distributor is connected to the second heat exchanger, and flows in from the first end The refrigerant is evenly distributed to the second end and the third end; the first end of the second distributor is connected to the four-way valve of the air conditioner, and the second end of the second distributor is The first heat exchanger is connected, the third end of the second distributor is connected to the second heat exchanger, and the refrigerant flowing in from the first end is evenly distributed to the second end and the third end.
The indoor unit of an air conditioner according to claim 3, wherein said first distributor and said second distributor are tee pipes.
The air conditioner indoor unit according to claim 2, wherein an indoor fan is disposed in each of the first air passage and the second air passage.
The air conditioner indoor unit according to claim 5, wherein the air conditioner indoor unit further comprises a control chip electrically connected to the indoor fan of the control chip; and the control chip is configured to determine when receiving the control signal The indoor fan controlled by the control signal controls the corresponding indoor fan according to the received control signal.
The indoor unit of an air conditioner according to claim 6, wherein said air conditioner indoor unit further comprises a communication module connected to said control chip, said control chip being used by said communication module to receive a transmission from said remote controller When the signal is controlled, the device information corresponding to the remote controller that transmits the control signal is acquired, and the indoor fan controlled by the control signal is determined according to the device information.
The indoor unit of an air conditioner according to claim 1, wherein said housing includes oppositely disposed front and rear end faces, upper and lower end faces, and left and right end faces, said left end face being located in the housing In the first segment, the right end surface is located in the second section of the housing.
The indoor unit of an air conditioner according to claim 8, wherein said housing comprises oppositely disposed front and rear panels, upper and lower panels, and left and right panels, said left panel being located A first section of the housing, the right side panel being located in a second section of the housing.
The air conditioner indoor unit according to claim 8, wherein an air outlet of the first air duct is located at the left end surface, and an air outlet of the second air duct is located at the right end surface; a return air outlet of the air duct and a return air outlet of the second air duct are located at a front end surface of the casing, and a certain air gap between the air return opening of the first air duct and the air return opening of the second air duct distance.
The air conditioner indoor unit according to claim 8, wherein the air return opening of the first air duct is located at the left end surface, and the air return opening of the second air duct is located at the right end surface; An air outlet of the air duct and an air outlet of the second air duct are located at a front end surface of the casing, and a certain air gap between the air outlet of the first air duct and the air outlet of the second air duct distance.
The air conditioner indoor unit according to claim 8, wherein the air return opening of the first air duct and the air return opening of the second air duct are both located at an upper end surface of the housing, and the first a return distance between the air return opening of the air duct and the air return opening of the second air duct; the air outlet of the first air duct and the air outlet of the second air duct are located at a lower end surface of the casing There is a certain distance between the air outlet of the first air duct and the air outlet of the second air duct.
The indoor unit of an air conditioner according to claim 8, wherein an air outlet of the first air duct and an air outlet of the second air duct are both located at an upper end surface of the housing, and the first a certain distance between the air outlet of the air duct and the air outlet of the second air duct; the air return opening of the first air duct and the air return opening of the second air duct are located at a lower end surface of the casing There is a certain distance between the return air outlet 30 of the first air passage and the air return opening 50 of the second air passage.
The air conditioner indoor unit according to claim 8, wherein an air outlet of the first air duct is located at the left end surface, and an air outlet of the second air duct is located at the right end surface; a return air outlet of the air duct and a return air outlet of the second air duct are located at an upper end surface of the casing, and a certain air gap between the air return port of the first air duct and the air return port of the second air duct distance.
A control method for an indoor unit of an air conditioner, wherein the indoor unit of the air conditioner is the indoor unit of the air conditioner according to claim 6, wherein the control scheme of the indoor unit of the air conditioner includes:

Determining an indoor fan controlled by the control signal when receiving the control signal;

The corresponding indoor fan is controlled according to the received control signal.
The control method of the indoor unit of the air conditioner according to claim 14, wherein the step of determining the indoor fan controlled by the control signal comprises:

When the communication module receives the control signal sent by the remote controller, acquiring device information corresponding to the remote controller that sends the control signal;

The indoor fan controlled by the control signal is determined according to the device information.
The method of controlling an indoor unit of an air conditioner according to claim 14, wherein a communication module is disposed in both the first section and the second section of the outer casing, and the step of determining the indoor fan controlled by the control signal comprises:

a communication module that determines the received control signal when the communication module receives the control signal;

The indoor fan corresponding to the communication module is used as an indoor fan controlled by a control signal.