CN115342496A

CN115342496A - Indoor unit and air conditioning system

Info

Publication number: CN115342496A
Application number: CN202211008874.2A
Authority: CN
Inventors: 王洪新; 林忠超; 刘伟杰; 董智理
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2022-11-15

Abstract

The invention discloses an indoor unit and an air conditioning system, relates to the technical field of air conditioners, and aims to solve the problem that the air quantity flowing through each branch air duct is possibly reduced if a plurality of air valves are simultaneously opened due to the fact that a main air duct is connected with a plurality of branch air ducts, so that the refrigerating or heating effect is influenced. The indoor unit body is provided with an air outlet; the main air duct is provided with an inlet and a plurality of outlets, and the inlet is communicated with the air outlet; the branch air channels correspond to the outlets one by one, the first ends of the branch air channels are communicated with the outlets, and the second ends of the branch air channels are used for being communicated with the indoor space; each branch air channel is internally provided with an adjusting piece, and the adjusting pieces are used for controlling the opening or closing of the branch air channels; the supercharging device is arranged in the main air duct and is used for increasing the air pressure in the main air duct; the wind pressure sensor is arranged in the main air duct and used for detecting wind pressure in the main air duct. The invention is used for regulating the indoor temperature.

Description

Indoor unit and air conditioning system

Technical Field

The invention relates to the technical field of air conditioners, in particular to an indoor unit and an air conditioning system.

Background

Air conditioners are widely used in daily life as a device for adjusting indoor temperature, and in large-sized places such as offices, central air conditioners are generally installed to adjust indoor temperature.

Because an office generally has a plurality of rooms, in order to adjust the temperature in different rooms, a main air duct is generally connected to an air outlet of an indoor unit, and a plurality of branch air ducts are connected to the main air duct, so that air blown out from the indoor unit can be blown to different rooms through the main air duct and different branch air ducts, and the temperature in each room can be adjusted.

In the prior art, in order to realize the controllability of the air output of different rooms, an air valve is generally arranged in each branch air duct, and the air valve is used for adjusting the opening, closing and conducting degree of each branch air duct, so that the air output is regulated and controlled. However, since the main air duct is connected to the plurality of branch air ducts, if the plurality of air valves are opened at the same time, the amount of air flowing through each branch air duct may be reduced, thereby affecting the cooling or heating effect.

Disclosure of Invention

The embodiment of the invention provides an indoor unit and an air conditioning system, which aim to solve the problem that the air quantity flowing through each branch air duct is possibly reduced if a plurality of air valves are simultaneously opened due to the fact that a main air duct is connected with a plurality of branch air ducts, so that the refrigerating or heating effect is influenced.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, an indoor unit is provided, which includes an indoor unit body, a main air duct, a plurality of branch air ducts, a plurality of adjusting members, a supercharging device, and an air pressure sensor. The indoor unit body is provided with an air outlet; the main air duct is provided with an inlet and a plurality of outlets, and the inlet is communicated with the air outlet; the branch air channels correspond to the outlets one by one, the first ends of the branch air channels are communicated with the outlets, and the second ends of the branch air channels are used for being communicated with the indoor space; each branch air channel is internally provided with an adjusting piece which is used for controlling the opening or closing of the branch air channel; the supercharging device is arranged in the main air duct and used for increasing the air pressure in the main air duct; the wind pressure sensor is arranged in the main air duct and used for detecting wind pressure in the main air duct.

According to the indoor unit provided by the embodiment of the invention, after the indoor unit body starts to work, cold air or hot air can be blown out from the air outlet and enters the main air duct, and at the moment, a user can adjust different adjusting pieces according to needs to control the ventilation quantity of one or more branch air ducts, so that the aim of adjusting the temperature in different rooms is fulfilled.

Because be provided with the wind pressure sensor in the main wind channel, consequently the wind pressure sensor can monitor the wind pressure in the main wind channel, when detecting the wind pressure and being less than preset wind pressure, be that when the quantity that the regulating part was opened is too much promptly to when leading to the wind pressure decline in the main wind channel, open supercharging device this moment, with the wind pressure in the increase main wind channel, thereby guarantee that the wind pressure through the wind in the branch wind channel is stable, the amount of wind is stable, thereby guarantee the stability of refrigeration or heating.

In some embodiments of the present application, the booster device comprises a booster fan.

In some embodiments of the present application, the indoor unit further includes a plurality of air guides, and the second end of each branch air duct is provided with an air guide, and the air guide is used to adjust an air outlet direction of the branch air duct.

In some embodiments of the present application, the indoor unit further includes a plurality of air outlet frames, the air outlet frames are used for being fixed on an indoor wall, the air outlet frames are disposed in one-to-one correspondence with the branched air ducts, air outlet holes are formed in the air outlet frames, the air outlet holes are communicated with the indoor space, and second ends of the branched air ducts are communicated with the air outlet holes; wherein, the air guide sets up in air outlet department, and the air guide is used for adjusting the air-out direction of exhaust vent.

In some embodiments of the present application, the air guide member includes an air guide plate and a motor, the air guide plate is disposed at the air outlet, and the air guide plate can rotate at the air outlet to adjust an air outlet direction of the air outlet; the motor is used for driving the air deflector to rotate.

In some embodiments of the present application, each of the air outlet frames has a plurality of air outlets, and the air guide member is disposed in one-to-one correspondence with the air outlets.

In some embodiments of the present application, the indoor unit further includes a lighting device, and the lighting device is fixedly connected to the air outlet frame, and the lighting device is at least partially located indoors.

In some embodiments of the present application, the adjustment member comprises a damper.

In some embodiments of the present application, the indoor unit includes a signal transmitting device, a plurality of signal receiving devices, and a controller, the signal receiving devices are disposed in one-to-one correspondence with the dampers, and the signal receiving devices are electrically connected to the signal transmitting device; the controller is electrically connected with the plurality of signal receiving devices, and the controller is electrically connected with the air valve.

In a second aspect, the present invention provides an air conditioning system, including an indoor unit and an outdoor unit in any of the above technical solutions, where the indoor unit is communicated with the outdoor unit.

The air conditioning system provided by the embodiment of the invention comprises the indoor unit in any one of the technologies, so that the same beneficial effects can be achieved.

Drawings

Fig. 1 is a first external structural view of an indoor unit according to an embodiment of the present disclosure;

fig. 2 is a second external structural view of an indoor unit according to an embodiment of the present disclosure;

fig. 3 is a third external structural view of an indoor unit according to an embodiment of the present disclosure;

fig. 4 is a fourth external structural view of an indoor unit according to an embodiment of the present disclosure;

fig. 5 is a fifth external structural view of an indoor unit provided in the embodiment of the present application;

fig. 6 is a sixth external structural view of an indoor unit provided in an embodiment of the present application;

fig. 7 is a seventh external structural view of an indoor unit according to an embodiment of the present application;

fig. 8 is an eighth external structural view of an indoor unit according to an embodiment of the present application;

fig. 9 is a ninth external structural view of an indoor unit according to an embodiment of the present application;

fig. 10 is a tenth external structural view of an indoor unit according to an embodiment of the present application;

fig. 11 is an external structural view of an air outlet plate provided in the embodiment of the present application;

fig. 12 is a first external structural view of an air guide provided in an embodiment of the present application;

fig. 13 is a second external structural view of an air guide provided in the embodiment of the present application;

fig. 14 is an eleventh external configuration diagram of an indoor unit according to an embodiment of the present application.

Reference numerals: 10-indoor unit; 100-indoor machine body; 200-a main air duct; 300-a branched duct; 400-an adjustment member; 410-a blast gate; 420-a damper; 430-a push rod motor; 500-a signal emitting device; 510-signal receiving means; 520-a controller; 600-a supercharging device; 610-a booster fan; 700-wind pressure sensor; 800-wind guide; 810-wind deflector; 820-a motor; 821-a motor body; 822-an output shaft; 900-an air outlet frame; 910-air outlet plate; 920 — lighting means.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Based on the fact that an air conditioner is widely applied to daily life as a device for adjusting indoor temperature, the application provides an air conditioning system which comprises an indoor unit and an outdoor unit, wherein the indoor unit is communicated with the outdoor unit, and the outdoor unit and the indoor unit are matched with each other to work so as to adjust and control the indoor temperature.

Air conditioning systems generally include a plurality of types, such as central air conditioners, wall-mounted air conditioners, cabinet air conditioners, and the like, and for large-scale places, such as offices, markets, and the like, the central air conditioners are generally installed to adjust indoor temperatures.

Since a large-sized place such as an office or a mall generally has a plurality of rooms, the central air conditioner needs to have a capability of adjusting the temperature of each room. To achieve the purpose, as shown in fig. 1, the indoor unit 10 provided by the present application includes an indoor unit body 100, a main duct 200, a plurality of branch ducts 300, and an adjusting member 400, wherein the indoor unit body 100 has an air outlet, the main duct 200 has an inlet and a plurality of outlets, and the inlet is communicated with the air outlet; the branch air ducts 300 correspond to the outlets one to one, a first end of the branch air duct 300 is communicated with the outlets, and a second end of the branch air duct 300 is used for being communicated with the indoor space; an adjusting member 400 is disposed in each branch air duct 300, and the adjusting member 400 is used for controlling the opening and closing of the branch air duct 300.

Through the arrangement, after the indoor unit body 100 starts working, cold air or hot air can be blown out from the air outlet, the air (cold air or hot air) can enter the main air duct 200, the user can adjust different adjusting pieces 400 as required at the moment, so that one branch air duct 300 or a plurality of branch air ducts 300 are opened, after the branch air ducts 300 are opened, the air can circulate to corresponding rooms from the branch air ducts 300, and the temperature in different rooms can be adjusted.

It can be understood that, in order to meet the cooling or heating requirements of different rooms, the second ends of the branch air ducts 300 may be connected to the same room, for example, as shown in fig. 2, the second ends of two branch air ducts 300 may be connected to the same room, when temperature needs to be adjusted, the adjusting members 400 in all the branch air ducts 300 communicating with the room may be adjusted at the same time, and the temperature in the room may be adjusted at the same time by using the branch air ducts 300, thereby improving the cooling or heating efficiency of the air conditioning system.

Moreover, for the office and other places, a plurality of people may be distributed in a room, a part of people may be located below the second end of the branch air duct 300, and the wind blown out from the branch air duct 300 may directly blow on the body of the part of people, and because there may be women, men, old people and young people in the part of people, they may have different wind sensing and adaptability, for example, in summer, there may be a case that some people feel cold and some people feel hot.

For the above situation, the problem can also be solved by connecting the second ends of the branch air ducts 300 to the same room, for example, the second end of one branch air duct 300 only covers 8 square areas facing 1-2 indoor persons, in this case, since there are fewer or even only one person located below the second end of one branch air duct 300, the person located below the second end of a different branch air duct 300 can control the corresponding adjusting member 400 according to its own requirement to change the conducting degree of the corresponding branch air duct 300, so that the air blown out from the branch air duct 300 is suitable for the person. The requirement of cooling or heating of each indoor person is met by arranging a plurality of branch air ducts 300 in the same room.

Of course, it is also possible to have only one branch duct 300 per room. The selection can be specifically made according to the size of the room, the requirements of the user and other factors.

Illustratively, as shown in fig. 3, the adjusting member 400 may be an air valve 410, and the air valve 410 is used to control the opening or closing of the branched air duct 300, and the air valve 410 may be directly purchased and installed, which is convenient to control. In addition, the air valve 410 is not only low in price, but also cold-resistant and heat-resistant, and has high cost performance.

Specifically, in actual control, as shown in fig. 4, the indoor unit 10 provided by the present application further includes a signal transmitting device 500, a plurality of signal receiving devices 510 and a controller 520, wherein the plurality of signal receiving devices 510 are arranged in one-to-one correspondence with the air valves 410, and the signal receiving devices 510 are electrically connected to the signal transmitting device 500; the controller 520 is electrically connected to the plurality of signal receiving devices 510, and the controller 520 is electrically connected to the damper 410.

Through the above control, when a user needs to adjust one of the air valves 410, the user only needs to use the signal transmitting device 500 to transmit a control instruction to the corresponding signal receiving device 510, the signal receiving device 510 switches the control instruction to the controller 520 after receiving the control instruction, and the controller 520 sends a control signal to the air valve 410 corresponding to the signal receiving device 510 after processing the control instruction, so that the air valve 410 performs corresponding actions, such as closing the air valve 410, opening the air valve 410, and opening the air valve 410. Thereby controlling the conduction degree of the branch duct 300.

The signal transmitting device 500 may be a remote controller, and a user can send a control command at any suitable position in a room by setting the remote controller, so as to control the air valve 410 more conveniently. Or the signal transmitting device 500 may also be a wire controller, and by setting the wire controller, the wire controller is installed on an indoor wall, and is not moved and not easily damaged, and has a stable connection relation with the signal receiving device 510, and can send a stable control instruction.

In other embodiments of the present application, as shown in fig. 5, the adjusting member 400 may also include a damper 420 and a push rod motor 430, the damper 420 is rotatably disposed in the branch air duct 300, for example, may be hinged to an inner wall of the branch air duct 300, and when the damper 420 is in the first position, the branch air duct 300 is opened; when the damper 420 is in the second position, the branch duct 300 is closed; an output shaft of the push rod motor 430 is fixedly connected with the damper 420, and the push rod motor 430 is used for driving the damper 420 to rotate. When the branch air duct 300 needs to be opened, the push rod motor 430 is used for driving the damper 420 to rotate to the first position, so that the branch air duct 300 is opened, and when the branch air duct 300 needs to be closed, the push rod motor 430 is used for driving the damper 420 to rotate to the second position, so that the branch air duct 300 is closed. The opening and closing of the branch duct 300 are controlled by the cooperation of the damper 420 and the push rod motor 430.

In the process of adjusting and controlling the adjusting element 400, sometimes only one adjusting element 400 needs to be adjusted and controlled, that is, only the on-off of one branch air duct 300 needs to be controlled, and sometimes a plurality of adjusting elements 400 need to be adjusted and controlled simultaneously, that is, the on-off of a plurality of branch air ducts 300 needs to be controlled simultaneously, in this case, if a plurality of branch air ducts 300 are opened simultaneously, the amount of air flowing through each branch air duct 300 may be reduced, thereby affecting the cooling or heating effect.

Based on this, as shown in fig. 6, the indoor unit 10 provided by the present application further includes a pressure increasing device 600 and an air pressure sensor 700, where the pressure increasing device 600 is disposed in the main air duct 200 and is used for increasing the air pressure in the main air duct 200; the wind pressure sensor 700 is disposed in the main wind tunnel 200, and is configured to detect wind pressure in the main wind tunnel 200.

Because the wind pressure sensor 700 is disposed in the main wind channel 200, the wind pressure sensor 700 can monitor the wind pressure in the main wind channel 200, when the detected wind pressure is less than the preset wind pressure, that is, when the amount of the opening of the adjusting member 400 is too large, thereby causing the wind pressure in the main wind channel 200 to decrease, the supercharging device 600 is opened at this moment, so as to increase the wind pressure in the main wind channel 200, thereby ensuring the stability of the wind pressure through the branched wind channel 300, and the stability of the wind volume, thereby ensuring the refrigeration or heating stability of the air conditioning system.

As shown in fig. 7, the supercharging device 600 may be a supercharging blower 610, the supercharging blower 610 is cheap, the supercharging blower 610 is used to stabilize the wind pressure in the main air duct 200, when the detected wind pressure is lower than the preset wind pressure, the supercharging blower 610 is started, and the rotation speed of the supercharging blower 610 reaches a certain value, so that the actual wind pressure in the main air duct 200 reaches the preset wind pressure, and the stable operation of cooling or heating is ensured; when the detected wind pressure is higher than the preset wind pressure, the rotation speed of the booster fan 610 can be reduced or the booster fan 610 is turned off, so that the wind pressure in the main air duct 200 is reduced, and energy is saved.

It is understood that one booster fan 610 may be provided, or a plurality of such as two, three or more booster fans may be provided, as long as the boosting requirement can be satisfied, and the present application is not particularly limited thereto.

In some embodiments, to ensure the stability of the operation of the booster fan 610, the booster fan 610 may be fixed in the main air duct 200, and the booster fan 610 may be prevented from shaking in the main air duct 200 when operating, so as to ensure that the booster fan 610 can stably increase the air pressure in the main air duct 200, thereby ensuring the stable cooling or heating effect of the air conditioning system.

Alternatively, pressure boosting device 600 may be a centrifugal compressor, or pressure boosting device 600 may be any other suitable pressure boosting device 600.

In a large place such as an office, a large number of people may sit in one room, and in such a case, the wind blown out from the second end of the branched duct 300 may be blown to a part of people, and for a long time, the part of people may suffer from symptoms such as headache.

Based on this, as shown in fig. 8, the indoor unit 10 provided by the present application further includes a plurality of air guides 800, the air guide 800 is disposed at the second end of each branch air duct 300, and the air guide 800 is used for adjusting the air outlet direction of the branch air duct 300.

The air guide member 800 is arranged at the second end of the branch air duct 300, and the air guide member 800 is used for adjusting the air outlet direction of the branch air duct 300, for example, in summer, when a person sitting below the second end of the branch air duct 300 feels that the air is relatively large and therefore feels relatively cold, the air guide member 800 can be adjusted, so that the air outlet direction of the branch air duct 300 is changed, and the air is blown to other directions; or when a person seated below the second end of the branched air duct 300 feels relatively small wind and thus feels relatively hot, the wind guide 800 may be adjusted to change the wind outlet direction of the branched air duct 300, so that the wind blows toward the indoor person, thereby cooling the indoor person.

As another example, in winter, when a person sitting below the second end of the branch air duct 300 feels a large amount of wind and feels hot, the wind guide member 800 may be adjusted to change the wind outlet direction of the branch air duct 300, so that the wind blows to other directions; or when a person seated below the second end of the branched duct 300 feels relatively small wind and thus feels relatively cold, the wind guide 800 may be adjusted to change the wind outlet direction of the branched duct 300, so that the wind is blown to the indoor person, and thus the indoor person feels warm. Thereby improving the comfort of indoor personnel.

To facilitate installation of the air guide 800, as shown in fig. 9, the indoor unit 10 provided by the present application further includes a plurality of air outlet frames 900, where the air outlet frames 900 are used to be fixed on an indoor wall, generally on an indoor top wall, the air outlet frames 900 are arranged in one-to-one correspondence with the branched air ducts 300, air outlet holes are formed in the air outlet frames 900, the air outlet holes are communicated with the indoor space, and second ends of the branched air ducts 300 are communicated with the air outlet holes; the air guide 800 is disposed at the air outlet, and the air guide 800 is used for adjusting the air outlet direction of the air outlet.

The air outlet frame 900 is arranged on an indoor wall, the air outlet hole is formed in the air outlet frame 900, and the second end of the branch air duct 300 is communicated with the indoor through the air outlet hole, so that the branch air duct 300 is communicated with the indoor. In addition, due to the limitation of the shape of the second end of the branch air duct 300, if the air guide 800 is directly installed on the branch air duct 300, the installation difficulty is high. By arranging the air outlet frame 900 at the second end of the branched air duct 300 and arranging the air guide 800 on the air outlet frame 900, a suitable air outlet frame 900 can be designed according to the requirement of the air guide 800, so as to facilitate the installation and detachment of the air guide 800.

As shown in fig. 10, each air outlet frame 900 may be provided with only one air outlet, and each corresponding air outlet frame 900 is provided with only one air guide 800, or each air outlet frame 900 may be provided with a plurality of air outlets at the same time, and the air guide 800 and the air outlets are arranged in a one-to-one correspondence manner. For example, as shown in fig. 9, each air outlet frame 900 is provided with two air outlet holes, and each air outlet hole is provided with one air deflector 810.

It can be understood that, when a plurality of air guides 800 are disposed on one air outlet frame 900, each air guide 800 may perform an independent operation, that is, a user may perform different controls on different air guides 800 on the same air outlet frame 900 as needed, so as to meet the cooling or heating requirements of different users sitting under the air outlet frame 900. For example, one of the two wind guides 800 is adjusted to be blown to a user, and the other of the two wind guides 800 is adjusted to be not blown to the user, so that the adjustability of the air conditioning system is improved, and the comfort of the user is improved. Certainly, the user can also control different air guides 800 under the same air outlet frame 900 at the same time, so that the control is simpler.

For example, as shown in fig. 11, the air outlet frame 900 includes an air outlet plate 910, air outlet holes (recessed portions in the figure) are formed in the air outlet plate 910, and the air outlet frame 900 is configured in a plate shape, which has a simple structure and is simpler to design and produce.

The air outlet plate 910 may be square, for example, the width thereof may be 500mm to 600 mm. Or the air outlet plate 910 may also be rectangular, which is not limited in this application.

Exemplarily, as shown in fig. 12, the air guide 800 includes an air guide plate 810 and a motor 820, the air guide plate 810 is disposed at the air outlet, and the air guide plate 810 can rotate at the air outlet to adjust the air outlet direction of the air outlet; the motor 820 is used for driving the air deflector 810 to rotate. The air guide plate 810 is disposed at the air outlet, and the motor 820 is used to drive the air guide plate 810 to rotate, so as to change the air outlet direction of the air outlet.

Specifically, as shown in fig. 13, the motor 820 includes a motor body 821 and an output shaft 822, the motor body 821 is fixedly connected to the air outlet frame 900 (not shown in the figure), the output shaft 822 is fixedly connected to the air guide plate 810, and the output shaft 822 drives the air guide plate 810 to rotate, so as to adjust the air outlet direction of the air outlet.

It can be understood that, in order to facilitate the output shaft 822 to drive the air deflector 810 to rotate, the axial direction of the output shaft 822 may be parallel to the plane of the air outlet.

In other embodiments of the present application, as shown in fig. 14, the indoor unit 10 further includes a lighting device 920, where the lighting device 920 is fixedly connected to the air outlet frame 900, and the lighting device 920 is at least partially located indoors. The lighting device 920 is integrated on the air outlet frame 900, the lighting device 920 can provide illumination for the indoor, and the lighting device 920 is installed on the air outlet frame 900, so that the lighting device 920 does not need to be arranged at other places of the room, and the space of the air outlet frame 900 is fully utilized. The integration level of the electric appliances (air conditioning system and lighting device 920) inside the room is improved.

The illumination device 920 may be any suitable lamp, such as an incandescent lamp, an energy saving lamp, and the like, and is not limited in this application. The user can select the design as desired.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An indoor unit, characterized in that the indoor unit includes:

the indoor unit body is provided with an air outlet;

the main air duct is provided with an inlet and a plurality of outlets, and the inlet is communicated with the air outlet;

the branch air channels correspond to the outlets one by one, the first ends of the branch air channels are communicated with the outlets, and the second ends of the branch air channels are used for being communicated with the indoor space;

the regulating pieces are arranged in each branch air channel and are used for controlling the opening or closing of the branch air channels;

the supercharging device is arranged in the main air duct and is used for increasing the air pressure in the main air duct;

and the wind pressure sensor is arranged in the main air duct and is used for detecting the wind pressure in the main air duct.

2. The indoor unit of claim 1, wherein the pressurizing device comprises a booster fan.

3. The indoor unit of any one of claims 1 to 2, further comprising a plurality of air guides, wherein the air guide is disposed at the second end of each of the branch ducts, and the air guide is configured to adjust an air outlet direction of the branch duct.

4. The indoor unit of claim 3, further comprising a plurality of outlet frames, wherein the outlet frames are fixed to a wall of the indoor unit, the outlet frames are disposed in one-to-one correspondence with the branched air ducts, the outlet frames are provided with outlet holes, the outlet holes are communicated with the indoor unit, and second ends of the branched air ducts are communicated with the outlet holes;

the air guide is arranged at the air outlet hole, and is used for adjusting the air outlet direction of the air outlet hole.

5. The indoor unit according to claim 4, wherein the air guide includes:

the air deflector is arranged at the air outlet and can rotate at the air outlet so as to adjust the air outlet direction of the air outlet;

the motor is used for driving the air deflector to rotate.

6. The indoor unit of claim 4, wherein each of the outlet frames has a plurality of outlet holes, and the air guide member is disposed in one-to-one correspondence with the outlet holes.

7. The indoor unit of claim 4, further comprising a lighting device, wherein the lighting device is fixedly connected to the outlet frame, and wherein the lighting device is at least partially located in the room.

8. The indoor unit of any one of claims 1 to 2, wherein the adjusting member comprises an air damper.

9. The indoor unit according to claim 8, further comprising:

a signal transmitting device;

the signal receiving devices are arranged in one-to-one correspondence with the air valves and are electrically connected with the signal transmitting device;

a controller electrically connected with the plurality of signal receiving devices and the controller is electrically connected with the damper.

10. An air conditioning system, comprising:

an indoor unit according to any one of claims 1 to 9;

and the indoor unit is communicated with the outdoor unit.