CN109990406B - Indoor ventilation and air purification circulation system - Google Patents

Indoor ventilation and air purification circulation system Download PDF

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Publication number
CN109990406B
CN109990406B CN201910282945.XA CN201910282945A CN109990406B CN 109990406 B CN109990406 B CN 109990406B CN 201910282945 A CN201910282945 A CN 201910282945A CN 109990406 B CN109990406 B CN 109990406B
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air
air duct
indoor
baffle
duct
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CN109990406A (en
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邓启红
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Central South University
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Central South University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/0227Ducting arrangements using parts of the building, e.g. air ducts inside the floor, walls or ceiling of a building
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/04Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/247Active noise-suppression
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses an indoor ventilation and air purification circulating system.A controller firstly controls an air purifier and an air cylinder to discharge air to the outside for a certain time after the circulating system is started every time so as to blow out dust in the air purifier and the air cylinder to the outside, prevent the dust in equipment from entering the indoor, improve the indoor air quality and reduce the problem that the dust enters the indoor; when the air flow circulates towards the indoor, the dust on the filter screen can be prevented from shaking to the indoor, and the ventilation and purification effect is ensured.

Description

Indoor ventilation and air purification circulation system
Technical Field
The invention relates to the technical field of indoor ventilation, in particular to an indoor ventilation and air purification circulating system.
Background
At present, indoor ventilation is generally carried out by adopting a circulating system formed by a fan, a purifier and the like, particularly for some scientific and technological residences. However, when the existing ventilation equipment is used for ventilation for a long time, a lot of dust is accumulated in the equipment, and when the ventilation equipment is used for ventilation, the dust in the equipment can enter a room, so that the aim of air purification cannot be fulfilled, and even the dust and germs in the equipment can enter the room to influence the indoor environment, so that the problems of peculiar smell and the like in the room at the initial stage of ventilation are solved.
Therefore, the present invention provides an indoor ventilation and air purification circulation system to solve the above problems in the prior art.
Disclosure of Invention
The present invention is directed to an indoor ventilation and air purification circulation system, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an indoor ventilation and air purification circulation system, includes dryer and air purifier and controller, its characterized in that: the air duct is embedded in the wall body, the outdoor end of the air duct is an outdoor air port, the indoor end of the air duct is an indoor air port, and the middle part of the air duct is connected to the air purifier through an air guide pipe; it is characterized in that the preparation method is characterized in that,
after the circulating system is started every time, the controller firstly controls the air purifier and the air cylinder to discharge air flow outwards for a certain time so as to blow out dust in the air purifier and the air cylinder outdoors;
the dust removing mechanism comprises a rotating shaft, blades, dust shaking balls and an anti-rotation elastic net, wherein the rotating shaft is rotatably arranged in the air duct and positioned outside the inner-layer filter screen in the air duct;
the blades, the dust shaking balls and the anti-rotation elastic net structure are arranged in such a way that when the controller controls the air flow to be discharged outwards, the air flow can drive the blades to rotate, and the dust shaking balls at the end parts of the blades can touch and shake and deform the inner-layer filter screen, so that dust removal of the inner-layer filter screen is realized;
when the controller controls the air flow to be discharged inwards, the air flow can enable the anti-rotation elastic net to bend towards the direction of the blade, and then the blade is shielded to prevent the blade from rotating.
Further, as a preferred option, a first fan is arranged in the air duct, a second fan is arranged between the air duct and the air guide pipe, the first fan can enable air flow to flow from an outdoor air port to an indoor air port or from the indoor air port to an outdoor air port, and the second fan can enable air flow to flow from the outdoor air port or the indoor air port to the air purifier.
Further, preferably, after the circulation system is started each time, the controller firstly controls the time of carrying out air flow discharging outdoors by the air purifier and the air duct to be 3-10min, and the air purifier and the air duct are both discharged outdoors in a maximum air speed state during discharging.
Further, as preferred, the inner wall middle part fixed connection of dryer the inlayer filter screen, the both sides detachable that lies in the inlayer filter screen in the dryer is provided with outer filter screen, the equal fixed mounting in one side both ends of dryer has servo motor, servo motor's input and the output electric connection of controller, two servo motor's output shaft all runs through dryer and fixedly connected with driving gear, the first baffle of one side fixedly connected with of driving gear, the top and the bottom of driving gear all mesh there is driven gear, one side fixedly connected with second baffle of driven gear, first baffle and second baffle are all rotated with the dryer from servo motor's one end and are connected.
Further, as preferred, the dryer internally mounted has the first fan that is located the inlayer filter screen both sides, the top center intercommunication of dryer has the second fan, the input of first fan and second fan all with the output electric connection of controller, the top intercommunication of second fan has the guide duct, the guide duct communicates with air purifier.
Further, as preferred, the inner wall fixedly connected with spacing seat of dryer, outer filter screen pegs graft with spacing seat.
Further, as preferred, the driving gear is the same with driven gear's size, the height of first baffle and second baffle all is the same with the diameter of driving gear, and the top and the bottom of first baffle and second baffle all are provided with the sealing strip.
Further, preferably, a silencer is arranged on the surface of the air guide pipe, and the silencer is located at one end close to the air purifier.
Further, as preferred, the first baffle and the second baffle are both fixedly mounted with a connecting gear on the side away from the servo motor, and the connecting gear is rotatably connected with the air duct.
Further, as preferred, one side of dryer is provided with outdoor wind gap, the opposite side of dryer is provided with indoor wind gap, and the first fan air-out end that is close to indoor wind gap one side is connected with the three-way valve, the bottom intercommunication of three-way valve has the exhaust pipe, the exhaust pipe runs through the dryer and extends to the outside of dryer.
Compared with the prior art, the invention has the beneficial effects that:
1. after the circulating system is started each time, the controller firstly controls the air purifier and the air cylinder to discharge air flow outwards for a certain time so as to blow out dust in the air purifier and the air cylinder outdoors, so that the dust in the equipment can be prevented from entering the room, the indoor air quality is improved, and the problem that the dust enters the room is reduced;
2. when the air flow circulates towards the indoor, the dust on the filter screen can be prevented from shaking to the indoor, and the ventilation and purification effect is ensured;
3. the invention controls the servo motor close to the indoor air inlet to work by the controller by arranging the air cylinder when the indoor air needs to be purified, the servo motor works to drive the driving gear to rotate, the inclination angle of the first baffle plate is adjusted when the driving gear rotates, simultaneously the driving gear rotates the driven gear, the driven gear drives the second baffle plate to rotate, thereby the first baffle plate and the second baffle plate are staggered, when the first fan works, the indoor air enters the air cylinder from the indoor air inlet, at the same time, the second fan works to draw the indoor air into the air purifier, the air purifier purifies the air, and the air inlet efficiency can be adjusted by controlling the gap between the first baffle plate and the second baffle plate by controlling the rotation of the servo motor, so that the air purifier can fully purify the air, and avoid the air entering the air purifier with larger amount, leading to incomplete purification;
4. when needing to take a breath in the room, two servo motor work of controller control, make the outdoor wind gap open, make the clearance between first baffle and the second baffle of outdoor wind gap side bigger, then start two first fans and second fan, the outer filter screen carries out the separation to the large granule in the outdoor air this moment, outdoor wind lets in air purifier, purify it by air purifier, and make indoor air quality get better gradually, the interface of controller control three-way valve and exhaust pipe intercommunication is opened simultaneously, first fan lets in indoor wind outdoor gradually this moment, the effect that the air flows has been reached, whole ventilation process can carry out effectual filtration and purification to outdoor inlet air, it is more pure when making it enter into the room, cooperate the air exhaust of exhaust pipe, can make the circulation of indoor air, so that make indoor keep good environment all the time.
Drawings
FIG. 1 is a schematic diagram of an indoor ventilation and air purification cycle system;
FIG. 2 is a schematic structural view of an air duct in an indoor ventilation and air purification circulation system;
fig. 3 is a side view of an air duct of an indoor ventilation and air purification circulation system.
FIG. 4 is a schematic structural view of an ash removal mechanism when the airflow of the indoor ventilation and air purification circulating system is discharged;
FIG. 5 is a schematic view of the ash removal mechanism in the air flow of an indoor ventilation and air purification cycle system;
Detailed Description
Referring to fig. 1 to 5, in an embodiment of the present invention, an indoor ventilation and air purification circulation system includes an air duct 1, an air purifier 2, and a controller 14, and is characterized in that: the air duct 1 is embedded in a wall body, an outdoor air opening 15 is formed in the outdoor end of the air duct 1, an indoor air opening 16 is formed in the indoor end of the air duct, and the middle of the air duct 1 is connected to the air purifier 2 through an air guide pipe 12; the air purifier is characterized in that after the circulating system is started each time, the controller firstly controls the air purifier 2 and the air cylinder 1 to discharge air flow to the outside for a certain time so as to blow out dust in the air purifier 2 and the air cylinder 1 to the outside;
the dust removing mechanism comprises a rotating shaft 20, blades, dust shaking balls 22 and an anti-rotation elastic net 21, wherein the rotating shaft is rotatably arranged in the air duct and positioned outside the inner-layer filter screen 3 in the air duct, a plurality of blades are arranged on the periphery of the rotating shaft, the dust shaking balls 22 are arranged at the end parts of the blades, and the anti-rotation elastic net 21 is also arranged outside the blades in the air duct;
the blades, the dust shaking balls and the anti-rotation elastic net structure are arranged in such a way that when the controller controls the air flow to be discharged outwards, the air flow can drive the blades to rotate, and the dust shaking balls at the end parts of the blades can touch and shake and deform the inner-layer filter screen 3, so that the dust removal of the inner-layer filter screen is realized;
when the controller controls the air flow to be discharged inwards, the air flow can enable the anti-rotation elastic net 21 to bend towards the direction of the blade, and then the blade is shielded to prevent the blade from rotating.
In this embodiment, a first fan 10 is disposed in the air duct 1, a second fan 11 is disposed between the air duct and the air guide pipe, the first fan enables an air flow to flow from the outdoor air opening 15 to the indoor air opening 16 or from the indoor air opening to the outdoor air opening, and the second fan enables the air flow to flow from the outdoor air opening or the indoor air opening to the air purifier.
As a preferred embodiment, after the circulation system is started each time, the controller firstly controls the time for the air purifier 2 and the air duct 1 to discharge air to the outside for 3-10min, and when discharging, the air purifier 2 and the air duct 1 are both discharged at the maximum air speed.
As better embodiment, inner wall middle part fixed connection of dryer 1 inlayer filter screen 3, the both sides detachable that is located inlayer filter screen 3 in dryer 1 is provided with outer filter screen 4, the equal fixed mounting in one side both ends of dryer 1 has servo motor 5, servo motor 5's input and 14 output electric connection of controller, two servo motor 5's output shaft all runs through dryer 1 and fixedly connected with driving gear 6, the first baffle 7 of one side fixedly connected with of driving gear 6, driven gear 8 has all been meshed to the top and the bottom of driving gear 6, one side fixedly connected with second baffle 9 of driven gear 8, the one end that first baffle 7 and second baffle 9 deviate from servo motor 5 all rotates with dryer 1 to be connected.
The air duct 1 is internally provided with first fans 10 positioned at two sides of the inner-layer filter screen 3, the top center of the air duct 1 is communicated with a second fan 11, input ends of the first fans 10 and the second fan 11 are both electrically connected with an output end of a controller 14, the top of the second fan 11 is communicated with an air guide pipe 12, and the air guide pipe 12 is communicated with the air purifier 2.
The inner wall of the air duct 1 is fixedly connected with a limiting seat 19, and the outer layer filter screen 4 is inserted into the limiting seat 19. The size of driving gear 6 and driven gear 8 is the same, the height of first baffle 7 and second baffle 9 all is the same with the diameter of driving gear 6, and the top and the bottom of first baffle 7 and second baffle 9 all are provided with the sealing strip. The surface of the air guide pipe 12 is provided with a silencer 13, and the silencer 13 is positioned at one end close to the air purifier 2. The first baffle 7 and the second baffle 9 are fixedly mounted on one side of the servo motor 5, and are rotatably connected with the air duct 1.
In addition, in the present invention, one side of the air duct 1 is provided with an outdoor air opening 15, the other side of the air duct 1 is provided with an indoor air opening 16, an air outlet end of the first fan 10 close to one side of the indoor air opening 16 is connected with a three-way valve 17, the bottom of the three-way valve 17 is communicated with an exhaust pipe 18, and the exhaust pipe 18 penetrates through the air duct 1 and extends to the outside of the air duct 1.
When the air purifier operates, when indoor air needs to be purified, the servo motor 5 close to the indoor air port 16 is controlled by the controller 14 to work, the servo motor 5 works to drive the driving gear 6 to rotate, the inclination angle of the first baffle 7 is adjusted when the driving gear 6 rotates, meanwhile, the driving gear 6 rotates the driven gear 8 to rotate, the driven gear 8 drives the second baffle 9 to rotate, so that the first baffle 7 and the second baffle 9 are staggered, when the first fan 10 works, indoor air enters the air duct 1 from the indoor air port 16, at the moment, the second fan 11 works to suck the indoor air into the air purifier 2, the air purifier 2 purifies the air, and the air inlet efficiency can be adjusted by controlling the rotation of the servo motor 5 to control the gap between the first baffle 7 and the second baffle 9, so that the air purifier 2 can fully purify the air, when indoor air enters the air duct 1, the outer filter screen 4 blocks large particle impurities in the air, so that air impurities subsequently entering the air purifier 2 are reduced, the situation that the purifying effect of the air purifier 2 is poor is avoided, when indoor air exchange is needed, the controller 14 controls the two servo motors 5 to work, the outdoor air inlet 15 is opened, the gap between the first baffle 7 and the second baffle 9 at the outdoor air inlet 15 side is larger, then the two first fans 10 and the second fan 11 are started, the outer filter screen 4 blocks large particles in the outdoor air, the outdoor air enters the air purifier 2, the air purifier 2 purifies the air, and the indoor air quality is gradually improved, meanwhile, the controller 14 controls the three-way valve 17 to be opened with the connection of the exhaust pipe 18, at the moment, the first fan 10 gradually introduces indoor air outdoors, the air flowing effect is achieved, the whole ventilation process can effectively filter and purify the outdoor inlet air, the outdoor inlet air is enabled to be purer when entering indoors, and the indoor air can circulate by matching with the exhaust of the exhaust pipe 18, so that the indoor environment is kept good all the time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (10)

1. The utility model provides an indoor ventilation and air purification circulation system, includes dryer (1) and air purifier (2) and controller (14), its characterized in that: the air duct (1) is embedded in a wall body, an outdoor air port (15) is arranged at the outdoor end of the air duct (1), an indoor air port (16) is arranged at the indoor end of the air duct, and the middle part of the air duct (1) is connected to the air purifier (2) through an air guide pipe (12); after the circulating system is started every time, the controller firstly controls the air purifier (2) and the air cylinder (1) to discharge air flow outwards for a certain time so as to blow out dust in the air purifier (2) and the air cylinder (1) outdoors;
the dust removing mechanism comprises a rotating shaft (20), blades, dust shaking balls (20) and an anti-rotation elastic net (21), wherein the rotating shaft is rotatably arranged in the air duct and is positioned on the outer side of the inner-layer filter screen (3) in the air duct, a plurality of blades are arranged on the periphery of the rotating shaft, the dust shaking balls (20) are arranged at the end parts of the blades, and the anti-rotation elastic net (21) is also arranged on the outer side of the blades in the air duct;
the blades, the dust shaking balls and the anti-rotation elastic net structure are arranged in such a way that when the controller controls the air flow to be discharged outwards, the air flow can drive the blades to rotate, and the dust shaking balls at the end parts of the blades can touch and shake and deform the inner-layer filter screen (3), so that the dust removal of the inner-layer filter screen is realized;
when the controller controls the air flow to be discharged inwards, the air flow can enable the anti-rotation elastic net (21) to bend towards the direction of the blade, and then the blade is shielded to prevent the blade from rotating.
2. Indoor ventilation and air purification circulation system according to claim 1, wherein a first fan (10) is arranged in the air duct (1), a second fan (11) is arranged between the air duct and the air duct, the first fan is capable of making the air flow from the outdoor air port (15) to the indoor air port (16) or from the indoor air port to the outdoor air port, and the second fan is capable of making the air flow from the outdoor air port or the indoor air port to the air purifier.
3. The indoor ventilation and air purification circulating system according to claim 1, wherein after the circulating system is started, the controller controls the air purifier (2) and the air duct (1) to perform outward airflow to the outside for 3-10min, and the air purifier (2) and the air duct (1) are both discharged at the maximum air speed during the outward airflow.
4. The indoor ventilation and air purification circulating system according to claim 1, wherein the inner wall middle portion of the air duct (1) is fixedly connected with the inner layer filter screen (3), the outer layer filter screen (4) is detachably arranged on two sides of the inner layer filter screen (3) in the air duct (1), both ends of one side of the air duct (1) are fixedly provided with the servo motors (5), the input ends of the servo motors (5) are electrically connected with the output end of the controller (14), the output shafts of the two servo motors (5) penetrate through the air duct (1) and are fixedly connected with the driving gear (6), one side of the driving gear (6) is fixedly connected with the first baffle (7), the top and the bottom of the driving gear (6) are respectively engaged with the driven gear (8), one side of the driven gear (8) is fixedly connected with the second baffle (9), and one ends of the first baffle (7) and the second baffle (9) departing from the servo motor (5) are rotatably connected with the air duct (1).
5. The indoor ventilation and air purification circulation system according to claim 2, wherein the first fans (10) located at two sides of the inner filter screen (3) are installed inside the air duct (1), the top center of the air duct (1) is communicated with the second fan (11), the input ends of the first fans (10) and the second fans (11) are electrically connected with the output end of the controller (14), the top of the second fan (11) is communicated with the air guide pipe (12), and the air guide pipe (12) is communicated with the air purifier (2).
6. An indoor ventilation and air purification circulation system according to claim 4, wherein the inner wall of the air duct (1) is fixedly connected with a limiting seat (19), and the outer filter screen (4) is inserted into the limiting seat (19).
7. An indoor ventilation and air purification circulation system according to claim 4, wherein the driving gear (6) and the driven gear (8) are the same size, the heights of the first baffle (7) and the second baffle (9) are the same as the diameter of the driving gear (6), and the tops and the bottoms of the first baffle (7) and the second baffle (9) are provided with sealing strips.
8. An indoor ventilation and air-cleaning circulation system according to claim 1, wherein the surface of the air duct (12) is provided with a silencer (13), and the silencer (13) is located at one end close to the air cleaner (2).
9. An indoor ventilation and air purification circulating system according to claim 7, wherein one side of the first baffle (7) and one side of the second baffle (9) facing away from the servo motor (5) are both fixedly provided with a connecting gear, and the connecting gear is rotatably connected with the air duct (1).
10. The indoor ventilation and air purification circulating system of claim 1, wherein one side of the air duct (1) is provided with an outdoor air port (15), the other side of the air duct (1) is provided with an indoor air port (16), an air outlet end of the first fan (10) close to one side of the indoor air port (16) is connected with a three-way valve (17), the bottom of the three-way valve (17) is communicated with an exhaust pipe (18), and the exhaust pipe (18) penetrates through the air duct (1) and extends to the outside of the air duct (1).
CN201910282945.XA 2019-04-09 2019-04-09 Indoor ventilation and air purification circulation system Active CN109990406B (en)

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