CN210397744U

CN210397744U - Air valve structure and air quality management device with same

Info

Publication number: CN210397744U
Application number: CN201921023549.7U
Authority: CN
Inventors: 张常华; 凌光正; 邱江涛
Original assignee: Foshan Qite Technology Co Ltd
Current assignee: Foshan Qite Technology Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-24
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses an air valve structure and have air quality management device of this air valve structure, the right margin of left wind gap shelf and the left margin looks rigid coupling of right wind gap shelf, top bearing frame fixed mounting is in the top of the right margin of left wind gap shelf and the left margin department of meeting of right wind gap shelf, it is on same straight line to go up pivot and lower pivot, it inserts in the inner circle of top bearing admittedly to go up the pivot, lower pivot inserts in the inner circle of bottom bearing admittedly, the bottom of top connecting plate and the top of left wind gap shelf and the top looks rigid coupling of right wind gap, the top connecting plate just has seted up the motor mounting hole to last pivot department, driving motor fixed mounting is on the top connecting plate, and driving motor's output shaft passes the motor mounting hole and meets with last pivot. This air quality management device's blast gate structure can control opening and shutting of two wind gaps, reduces the access of blast gate and pipeline and has practiced thrift user's furred ceiling space, simultaneously, realizes multiple wind path circulation mode through two blast gate structures, makes the control to the wind path more convenient.

Description

Air valve structure and air quality management device with same

Technical Field

The utility model relates to an intelligence field of furniture especially relates to an air valve structure and have air quality management device of this air valve structure.

Background

Along with the improvement of consumer standard of living, people attach more and more importance to healthy life style, the blast gate is the ventilation of industry factory building civil construction, air conditioning and indispensable device among the air purification engineering, however blast gate on the market does not have the changeable regulatory function of fine realization new trend and exhaust at present in order to reach the control purpose that reduces the blast gate, and the opening and shutting of one wind gap must be joined in marriage a blast gate to current technique, if need control the opening and shutting of two wind gaps just need two blast gates to control, thereby make the complicated and installation of indoor new trend system pipeline become complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air valve structure that can control opening and shutting in two wind gaps and have the air quality management device of this air valve structure.

In order to realize the purpose, the technical scheme of the utility model is that: the air valve structure comprises a left air port frame, a right air port frame, a top connecting plate, a driving motor, an air valve, a left limit switch, a right limit switch, a top bearing seat, a top bearing, a bottom bearing seat and a bottom bearing, wherein the right edge of the left air port frame is fixedly connected with the left edge of the right air port frame, the top bearing seat is fixedly arranged at the top of the joint of the right edge of the left air port frame and the left edge of the right air port frame, the top bearing is fixedly arranged in the top bearing seat, the bottom bearing seat is fixedly arranged at the bottom of the joint of the right edge of the left air port frame and the left edge of the right air port frame, the bottom bearing is fixedly arranged in the bottom bearing seat, the upper end of the inner edge of the air valve extends upwards to form an upper rotating shaft, and the lower end of the inner edge of the air valve extends downwards to form a lower rotating shaft, the upper rotating shaft and the lower rotating shaft are positioned on the same straight line, the upper rotating shaft is fixedly inserted in the inner ring of the top bearing, the lower rotating shaft is fixedly inserted in the inner ring of the bottom bearing, the bottom of the top connecting plate is fixedly connected with the top of the left air port frame and the top of the right air port frame, a motor mounting hole is formed in the position, right opposite to the upper rotating shaft, of the top connecting plate, the driving motor is fixedly mounted on the top connecting plate, an output shaft of the driving motor penetrates through the motor mounting hole to be connected with the upper rotating shaft, a left air port is formed in the left air port frame, a left sealing ring is arranged on the inner side wall of the left air port frame around the left air port, the left limiting switch is mounted on the inner side wall of the left air port frame outside the left sealing ring, a right air port is formed in the right air port frame, and a right sealing ring is arranged on the inner side wall, the right limit switch is arranged on the inner side wall of the right air opening frame and on the outer side of the right sealing ring, when the air valve touches the left limit switch, the air valve is in sealing abutting-pressing with the left air opening, and when the air valve touches the right limit switch, the air valve is in sealing abutting-pressing with the right air opening.

Preferably, the left limit switch is installed above the left sealing ring, and the right limit switch is installed above the right sealing ring.

Preferably, the air valve structure further comprises a connecting bottom plate, and the connecting bottom plate is fixedly connected with the bottom of the left air port frame and the bottom of the right air port frame.

The utility model also provides an air quality management device, including casing, total heat exchanger, indoor new trend fan, exhaust fan, indoor air inlet coarse filter screen, indoor air-out filter component, outdoor air inlet coarse filter screen and two as above-mentioned blast gate structures, two the blast gate structure is indoor switching blast gate structure and outdoor switching blast gate structure respectively, the casing is separated into indoor air inlet chamber, indoor air outlet chamber, outdoor air inlet chamber, outdoor air exhaust chamber and kitchen exhaust fume chamber, total heat exchanger installs in the casing, total heat exchanger's air inlet input end with outdoor air inlet chamber meets, total heat exchanger's air inlet output end with indoor air outlet chamber meets, total heat exchanger's air exhaust input end with indoor air inlet chamber communicates, total heat exchanger's output with outdoor air exhaust chamber communicates, the kitchen smoke discharging cavity is positioned between the indoor air outlet cavity and the outdoor air outlet cavity, one end of the kitchen smoke discharging cavity is provided with a kitchen oil smoke air inlet, the other end of the kitchen smoke discharging cavity is provided with a smoke discharging port which is communicated with the outdoor air outlet cavity, the outdoor switching air valve structure is arranged in the shell and positioned between the kitchen smoke discharging cavity and the outdoor air outlet cavity, the periphery of a right air port frame of the outdoor switching air valve structure is connected with the air discharging output end of the total heat exchanger in a sealing way, the periphery of a left air port frame of the outdoor switching air valve structure is connected with the smoke discharging port in a sealing way, a vent hole is arranged between the indoor air inlet cavity and the indoor air outlet cavity, the indoor switching air valve structure is arranged in the shell, and the periphery of the left air port frame of the indoor switching air valve structure is connected with the vent hole in a sealing way, the periphery of a right air port frame of the indoor switching air valve structure is hermetically connected with an air inlet output end of the total heat exchanger, an indoor air inlet cavity is provided with an indoor air inlet communicated with the indoor, an indoor air inlet coarse filter screen is arranged between the indoor air inlet and the ventilation opening and the air exhaust input end of the total heat exchanger, an indoor air outlet cavity is provided with an indoor air outlet communicated with the indoor, an indoor fresh air fan is arranged in the indoor air outlet cavity, the output end of the indoor fresh air fan is communicated with the indoor air outlet, an outdoor air inlet cavity is provided with an outdoor air inlet communicated with the outside, an outdoor air inlet coarse filter screen is arranged between the outdoor air inlet and the air inlet input end of the total heat exchanger, an outdoor air outlet communicated with the outside is arranged in the outdoor air exhaust cavity, and the air exhaust fan is arranged in the outdoor air outlet cavity, and the output end of the exhaust fan is communicated with the outdoor air outlet, and the indoor air outlet filtering component is arranged between the indoor air outlet and the indoor switching air valve.

Compared with the prior art, the utility model discloses opening and shutting in two wind gaps can be controlled to air quality management device's blast gate structure, has reduced the access of blast gate and pipeline and has practiced thrift user's furred ceiling space greatly, simultaneously, realizes multiple wind path circulation mode through two blast gate structures, and it is more convenient to make the control to the wind path.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

Fig. 1 is a structural diagram of the air valve structure of the present invention.

Fig. 2 is a schematic diagram of a control structure of the first air path of the air quality control device according to the present invention.

Fig. 3 is a schematic diagram of a control structure of a second air path of the air quality control device according to the present invention.

Fig. 4 is a schematic diagram of a control structure of the third air path of the air quality control device according to the present invention.

Fig. 5 is a schematic diagram of a control structure of a fourth air path of the air quality control device according to the present invention.

Fig. 6 is a schematic diagram of a control structure of a fifth air path of the air quality control apparatus according to the present invention.

FIG. 7 is a schematic diagram of a control structure of the sixth air path of the air quality control device of the present invention

Detailed Description

Referring to fig. 1 to 7, the air quality management device 100 of the present invention includes a shell 10, a total heat exchanger 20, an indoor fresh air blower 30, an exhaust air blower 40, an indoor air inlet coarse filter screen 50, an indoor air outlet filter assembly 60, an outdoor air inlet coarse filter screen 70, and two air valve structures 80.

The air valve structure 80 includes a left air port frame 801, a right air port frame 802, a top connection plate 803, a driving motor 804, an air valve 805, a left limit switch 806, a right limit switch 807, a top bearing seat (not shown), a top bearing (not shown), a bottom bearing seat 810 and a bottom bearing 811. The right edge of the left tuyere rack 801 is fixedly connected with the left edge of the right tuyere rack 802. The top bearing seat is fixedly installed on the top of the joint of the right edge of the left air inlet frame 801 and the left edge of the right air inlet frame 802. The top bearing is fixedly arranged in the top bearing seat. The bottom bearing seat 810 is fixedly installed at the bottom of the joint of the right edge of the left air inlet frame 801 and the left edge of the right air inlet frame 802. The bottom bearing 811 is fixedly mounted in the bottom bearing seat 810. An upper rotating shaft (not shown) extends upwards from the upper end of the inner side edge of the air valve 805, and a lower rotating shaft 8052 extends downwards from the lower end of the inner side edge of the air valve 805. The upper rotating shaft 8051 and the lower rotating shaft 8052 are located on the same straight line. The upper rotating shaft is fixedly inserted into the inner ring of the top bearing, and the lower rotating shaft 8052 is fixedly inserted into the inner ring of the bottom bearing 811. The bottom of the top connecting plate 803 is fixedly connected with the top of the left tuyere rack 801 and the top of the right tuyere rack 802. A motor mounting hole (not shown) is formed at a position, opposite to the upper rotating shaft 8051, of the top connecting plate 803. The driving motor 804 is fixedly mounted on the top connecting plate 803, and an output shaft of the driving motor 804 passes through the motor mounting hole to be connected with the upper rotating shaft. A left air port 8011 is arranged on the left air port shelf 801, and a left sealing ring (not shown) is arranged on the periphery of the left air port 8011 on the inner side wall of the left air port shelf 801. The left limit switch 806 is installed on the inner side wall of the left air inlet frame 801 at the outer side of the left sealing ring. The right air inlet 8021 is formed in the right air inlet frame 802, a right sealing ring (not shown) is arranged on the periphery of the right air inlet 8021 on the inner side wall of the right air inlet frame 802, and the right limit switch 807 is arranged on the outer side of the right sealing ring on the inner side wall of the right air inlet frame 802. When the air valve 805 touches the left limit switch 806, the air valve 805 is pressed against the left air port 8011 in a sealing manner; when the air valve 805 touches the right limit switch 807, the air valve 805 is in sealing contact with the right air opening 8021. In this embodiment, the left limit switch 806 is installed above the left sealing ring, and the right limit switch 807 is installed above the right sealing ring.

Preferably, the air valve structure 80 further includes a connecting bottom plate 812, and the connecting bottom plate 812 is fixedly connected to the bottom of the left air inlet frame 801 and the bottom of the right air inlet frame 802.

The shell 10 is divided into an indoor air inlet cavity 11, an indoor air outlet cavity 12, an outdoor air inlet cavity 13, an outdoor air outlet cavity 14 and a kitchen smoke exhaust cavity 15. The total heat exchanger 20 is installed in the case 10. The air inlet input end 21 of the total heat exchanger 20 is connected with the outdoor air inlet cavity 13. The air inlet output end 22 of the total heat exchanger 20 is connected with the indoor air outlet cavity 12. An air exhaust input end 23 of the total heat exchanger 20 is communicated with the indoor air inlet cavity 11, and an air exhaust output end 24 of the total heat exchanger 20 is communicated with the outdoor air exhaust cavity 14. The kitchen smoke discharging cavity 15 is located between the indoor air outlet cavity 12 and the outdoor air discharging cavity 14. One end of the kitchen smoke exhaust cavity 15 is provided with a kitchen oil smoke inlet 151, the other end of the kitchen smoke exhaust cavity 15 is provided with a smoke exhaust port 152, and the smoke exhaust port 152 is communicated with the outdoor air exhaust cavity 14.

The two air valve structures 80 are an indoor switching air valve structure 81 and an outdoor switching air valve structure 82 respectively. The outdoor switching damper structure 82 is installed in the casing 10 and located between the kitchen smoke exhaust cavity 15 and the outdoor exhaust cavity 14. The periphery of the right air port frame 802 of the outdoor switching air valve structure 82 is hermetically connected with the exhaust output end 24 of the total heat exchanger 20, and the periphery of the left air port frame 801 of the outdoor switching air valve structure 82 is hermetically connected with the smoke exhaust port 152. A ventilation opening 112 is arranged between the indoor air inlet cavity 11 and the indoor air outlet cavity 12. The indoor switching air valve structure 81 is installed in the housing 10, and the periphery of the left air inlet frame 801 of the indoor switching air valve structure 81 is connected with the air vent 112 in a sealing manner. The periphery of the right air inlet frame 802 of the indoor switching air valve structure 81 is hermetically connected with the air inlet output end 22 of the total heat exchanger 20. The indoor air inlet cavity 11 is provided with an indoor air inlet 111 communicated with the indoor space. The indoor air intake coarse filter screen 50 is installed between the indoor air intake 111 and the ventilation opening 112 and the exhaust input end 23 of the total heat exchanger 20. The indoor air outlet 121 communicated with the indoor is formed in the indoor air outlet cavity 12, the indoor fresh air fan 30 is installed in the indoor air outlet cavity 12, the output end of the indoor fresh air fan 30 is communicated with the indoor air outlet 121, and the indoor air outlet filtering component 60 is installed between the indoor air outlet 121 and the indoor switching air valve structure 81. In this embodiment, the indoor air-out filter assembly 60 is a triple filter element. The outdoor air inlet chamber 13 is provided with an outdoor air inlet 131 communicated with the outside, and the outdoor air inlet coarse filter screen 70 is installed between the outdoor air inlet 131 and the air inlet input end 21 of the total heat exchanger 20. The outdoor air exhausting cavity 14 is provided with an outdoor air exhausting port 141 communicated with the outside, the air exhausting fan 40 is installed in the outdoor air exhausting cavity 14, and the output end of the air exhausting fan 40 is communicated with the outdoor air exhausting port 141.

During the use of the air quality control device 100, there are the following six air path control methods:

1. trend of indoor air circulation wind path:

as shown by the arrow in fig. 2, when only indoor fresh air is turned on, the air valve 805 of the indoor switching air valve structure 81 is turned to the right limit switch 807 on the right air inlet frame 802 and stops, at this time, the indoor air is sucked by the negative pressure generated by the rotation of the indoor fresh air fan 30, impurities are filtered by the indoor air inlet coarse filter screen 50 and then passes through the indoor switching air valve structure 81, and since the indoor switching valve structure 81 is turned to the right at this time to block the outdoor external circulation channel, the air finally enters the room again after being filtered by the indoor air outlet filter assembly 60, thereby realizing the purification cycle of the indoor air.

2. Outdoor convulsions advance indoor wind path trend:

as shown by the arrow in fig. 3, when the fresh air mode is turned on, the air valve 805 of the indoor switching air valve structure 81 rotates to the left limit switch 806 on the left air inlet shelf 801 and stops, at this time, the outdoor air is sucked by the negative pressure generated by the rotation of the indoor fresh air fan 30, passes through the outdoor air inlet coarse filter screen 70 and the total heat exchanger 20 in sequence, and then passes through the indoor switching valve structure 81, because the air valve 805 rotates to the left to block the indoor internal circulation channel, the outdoor air can only go to the indoor air outlet filter assembly 60, and is blown into the indoor by the indoor fresh air fan 30, so that the effect of pumping clean air from the outdoor into the indoor is achieved.

3. The trend of indoor air exhaust to outdoor air path is as follows:

as shown by the arrow in fig. 4, when the air exhausting mode is turned on, the air valve 805 of the indoor switching valve structure 81 rotates to the left limit switch 806 on the left air inlet shelf 801 and stops, at this time, the indoor air is sucked by the negative pressure generated by the rotation of the air exhausting fan 40, at this time, the indoor air sequentially passes through the indoor air inlet coarse filter screen 50 and the total heat exchanger 20 to reach the outdoor switching air valve structure 82, and because the air valve 805 of the outdoor switching air valve structure 82 rotates to the left limit switch 806 on the left air inlet shelf 801, the air passes through the outdoor switching air valve structure 82 and is exhausted to the outside by the air exhausting fan 40, thereby achieving the effect of exhausting the air from the indoor to the outdoor.

4. The trend of the kitchen oil smoke exhausting to the outdoor wind path is as follows:

as shown by the arrow in fig. 5, when the residual smoke exhausting mode is turned on, the air valve 805 of the outdoor switching air valve structure 82 rotates to the right limit switch 807 on the right air inlet frame 802, the kitchen oil smoke is sucked by the negative pressure generated by the rotation of the exhaust fan 40, passes through the outdoor switching air valve structure 82 in sequence, and is exhausted outdoors through the exhaust fan 40, thereby achieving the purpose of assisting the range hood in exhausting oil smoke.

5. Outdoor convulsions are advanced indoor and outdoor convulsions are advanced indoor wind path trend:

as shown by the arrow in fig. 6, at this time, the exhaust mode and the fresh air mode are simultaneously turned on, the air valve 805 of the indoor switching valve structure 81 is turned to the left limit switch 806 on the left air port shelf 801 and is stopped, the air valve 805 of the outdoor switching valve structure 82 is turned to the left limit switch 806 on the left air port shelf 801 and is stopped, and at this time, the indoor air passes through the indoor air inlet coarse filter screen 50, the total heat exchanger 20 and the outdoor switching air valve structure 82 in sequence and is then exhausted to the outside through the exhaust fan 40; meanwhile, outdoor air sequentially passes through the outdoor air inlet coarse filter screen 70, the total heat exchanger 20, the indoor switching air valve structure 81 and the indoor air outlet filter assembly 60 and is finally sucked into the room through the indoor fresh air fan 30, so that the effect of simultaneously opening the two modes is realized.

6. The kitchen lampblack chamber exhausts to the outside and exhausts to the indoor wind path trend:

as shown by the arrows in fig. 7, the lampblack discharge mode and the fresh air mode are simultaneously turned on, at this time, the air valve 805 of the indoor switching valve structure 81 is turned to the left limit switch 806 on the left air port shelf 801 and is stopped, the air valve 805 of the outdoor switching valve structure 82 is turned to the right limit switch 807 on the right air port shelf 802 and is stopped, and the kitchen lampblack is discharged outdoors through the outdoor switching air valve structure 82 and the exhaust fan 40 in sequence; meanwhile, the outdoor air passes through the outdoor air inlet coarse filter screen 70, the total heat exchanger 20, the indoor switching air valve structure 81 and the indoor air outlet filter assembly 60 in sequence, and is finally sucked into the room through the indoor fresh air fan 30. Thereby realizing the effect that the two modes are simultaneously started.

The utility model discloses opening and shutting of two wind gaps can be controlled to air quality management device's blast gate structure, has reduced the access of blast gate and pipeline and has practiced thrift user's furred ceiling space greatly, simultaneously, realizes multiple wind path circulation mode through two blast gate structures, makes the control to the wind path more convenient.

The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and various modifications, equivalent combinations, which are made according to the essence of the present embodiment, should be covered.

Claims

1. An air valve structure is characterized in that: the air inlet device comprises a left air inlet frame, a right air inlet frame, a top connecting plate, a driving motor, an air valve, a left limit switch, a right limit switch, a top bearing seat, a top bearing, a bottom bearing seat and a bottom bearing, wherein the right edge of the left air inlet frame is fixedly connected with the left edge of the right air inlet frame, the top bearing seat is fixedly arranged at the top of the joint of the right edge of the left air inlet frame and the left edge of the right air inlet frame, the top bearing is fixedly arranged in the top bearing seat, the bottom bearing seat is fixedly arranged at the bottom of the joint of the right edge of the left air inlet frame and the left edge of the right air inlet frame, the bottom bearing is fixedly arranged in the bottom bearing seat, an upper rotating shaft extends upwards from the upper end of the inner edge of the air valve, a lower rotating shaft extends downwards from the lower end of the inner edge of the air valve, and the upper rotating shaft and the lower rotating shaft are positioned, the upper rotating shaft is fixedly inserted into the inner ring of the top bearing, the lower rotating shaft is fixedly inserted into the inner ring of the bottom bearing, the bottom of the top connecting plate is fixedly connected with the top of the left air port frame and the top of the right air port frame, a motor mounting hole is formed in the position, right opposite to the upper rotating shaft, of the top connecting plate, the driving motor is fixedly installed on the top connecting plate, an output shaft of the driving motor penetrates through the motor mounting hole to be connected with the upper rotating shaft, a left air port is formed in the left air port frame, a left sealing ring is arranged on the inner side wall of the left air port frame and around the left air port, the left limit switch is installed on the inner side wall of the left air port frame and outside the left sealing ring, a right air port is formed in the right air port frame, and a right sealing ring is arranged on the inner side wall of the, the right limit switch is arranged on the inner side wall of the right air opening frame and on the outer side of the right sealing ring, when the air valve touches the left limit switch, the air valve is in sealing abutting-pressing with the left air opening, and when the air valve touches the right limit switch, the air valve is in sealing abutting-pressing with the right air opening.

2. The air valve structure according to claim 1, wherein: the left limit switch is arranged above the left sealing ring, and the right limit switch is arranged above the right sealing ring.

3. The air valve structure according to claim 1, wherein: the air inlet frame is characterized by further comprising a connecting bottom plate, and the connecting bottom plate is fixedly connected with the bottom of the left air inlet frame and the bottom of the right air inlet frame.

4. An air quality management device, characterized by: the air valve structure comprises a shell, a total heat exchanger, an indoor fresh air fan, an exhaust fan, an indoor air inlet coarse filter screen, an indoor air outlet filter assembly, an outdoor air inlet coarse filter screen and two air valve structures according to any one of claims 1 to 3, wherein the two air valve structures are respectively an indoor switching air valve structure and an outdoor switching air valve structure, the shell is divided into an indoor air inlet cavity, an indoor air outlet cavity, an outdoor air inlet cavity, an outdoor air exhaust cavity and a kitchen exhaust cavity, the total heat exchanger is arranged in the shell, the air inlet input end of the total heat exchanger is connected with the outdoor air inlet cavity, the air inlet output end of the total heat exchanger is connected with the indoor air outlet cavity, the air outlet end of the total heat exchanger is connected with the outdoor air inlet cavity, and the kitchen exhaust cavity is positioned between the indoor air outlet cavity and the outdoor air outlet cavity, one end of the kitchen smoke exhaust cavity is provided with a kitchen oil smoke air inlet, the other end of the kitchen smoke exhaust cavity is provided with a smoke exhaust port, the smoke exhaust port is communicated with the outdoor exhaust cavity, the outdoor switching air valve structure is arranged in the shell and positioned between the kitchen smoke exhaust cavity and the outdoor exhaust cavity, the periphery of a right air port frame of the outdoor switching air valve structure is hermetically connected with the exhaust output end of the total heat exchanger, the periphery of a left air port frame of the outdoor switching air valve structure is hermetically connected with the smoke exhaust port, a vent hole is formed between the indoor air inlet cavity and the indoor air outlet cavity, the indoor switching air valve structure is arranged in the shell, the periphery of a left air port frame of the indoor switching air valve structure is hermetically connected with the vent hole, and the periphery of a right air port frame of the indoor switching air valve structure is hermetically connected with the air inlet output end of the total heat exchanger, the indoor air inlet cavity is provided with an indoor air inlet communicated with the indoor space, the indoor air inlet coarse filter screen is arranged between the indoor air inlet and the ventilation opening and the air exhaust input end of the total heat exchanger, the indoor air outlet cavity is provided with an indoor air outlet communicated with the indoor space, the indoor fresh air fan is arranged in the indoor air outlet cavity, the output end of the indoor fresh air fan is communicated with the indoor air outlet, the outdoor air inlet cavity is provided with an outdoor air inlet communicated with the outside, the outdoor air inlet coarse filter screen is arranged between the outdoor air inlet and the air inlet input end of the total heat exchanger, the outdoor air exhaust cavity is provided with an outdoor air exhaust outlet communicated with the outside, the air exhaust fan is arranged in the outdoor air exhaust cavity, and the output end of the exhaust fan is communicated with the outdoor air outlet, and the indoor air outlet filtering component is arranged between the indoor air outlet and the indoor switching air valve.