CN110986243A

CN110986243A - Air interchanger capable of reducing indoor air pollution

Info

Publication number: CN110986243A
Application number: CN201911286487.3A
Authority: CN
Inventors: 钟威
Original assignee: Shanghai Xianggu Steel Structure Engineering Co Ltd
Current assignee: Shanghai Xianggu Steel Structure Engineering Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-04-10

Abstract

The invention relates to an air interchanger capable of reducing indoor air pollution, which comprises an air interchanging pipeline and a row fan, wherein the air interchanging pipeline comprises a horizontal part and a vertical part, the horizontal part penetrates through a wall body, the vertical part is positioned indoors, the row fan is arranged in the air interchanging pipeline, an interlayer is arranged in the horizontal part and separates the horizontal part into an air outlet pipeline and an air inlet pipeline, the upper end of the vertical part, far away from the side wall of the interlayer, is provided with an air outlet, the air outlet is aligned with the air outlet pipeline, the cavity at the bending part of the horizontal part and the vertical part is called as an accommodating cavity, the axis of the row fan is parallel to the interlayer and is arranged in the accommodating cavity, the surfaces of the lower edges of the axis of the row fan, the interlayer is close to the surface of indoor surface, the inside lower surface of interlayer and the inside surface of keeping away from the wall body of vertical portion, arranges the fan and rotates towards the admission line direction from the pipeline of giving vent to anger at the holding intracavity. The invention has the effect of reducing indoor air pollution.

Description

Air interchanger capable of reducing indoor air pollution

Technical Field

The invention relates to the technical field of ventilation of stadiums, in particular to a ventilation device capable of reducing indoor air pollution.

Background

At present, in places where people gather such as stadiums, the indoor air is not good due to too much people gather, and the indoor air and the external air can be exchanged by natural or mechanical means in ventilation so as to meet the requirement of human bodies on air quality.

Referring to fig. 1, a conventional ventilating apparatus generally includes an exhaust fan 1 and a blowing fan 2. The exhaust fan 1 is arranged above the wall body 3 and communicated with the indoor and the outdoor, the turbid air in the room can be sent to the outdoor through rotation, meanwhile, the air supply fan 2 is also communicated with the indoor and the outdoor, the fresh air in the room is sent into the room through rotation in a direction opposite to that of the exhaust fan 1, and the ventilation effect is achieved through the method.

The exhaust fan 1 and the air supply fan 2 are both in the prior art, have air supply and exhaust functions, and the specific structure is determined according to actual conditions.

The above prior art solutions have the following drawbacks: when exhaust fan 1 and blower fan 2 all stop working, indoor outer through exhaust fan 1 and blower fan 2 still the state of intercommunication, when outdoor air is not good, probably through exhaust fan 1 and blower fan 2 entering indoor air pollution that causes, perhaps indoor hot-air can be through exhaust fan 1 and blower fan 2 effluvium, cause the pollution of indoor air when exhaust fan 1 and blower fan 2 stop working.

Disclosure of Invention

In view of the disadvantages of the prior art, the present invention is directed to a ventilator capable of reducing indoor air pollution, so that when the ventilator stops working, the blades of the ventilator can separate the indoor air from the outdoor air, thereby reducing indoor air pollution.

The purpose of the invention is realized by the following technical scheme:

the air interchanger capable of reducing indoor air pollution comprises an air interchanging pipeline, wherein the air interchanging pipeline comprises a horizontal part, the horizontal part penetrates through a wall body, an interlayer is arranged in the horizontal part, the interlayer separates the horizontal part into an air outlet pipeline and an air inlet pipeline, the air interchanging pipeline comprises a vertical part, the side wall, away from the interlayer, of the upper end of the vertical part is provided with an air outlet, the air outlet is aligned with the air outlet pipeline, a cavity at the bending part of the horizontal part and the vertical part is called as an accommodating cavity, a fan is arranged in the accommodating cavity, the axis of the fan is parallel to the interlayer, the axis of the fan, the upper surface of the interlayer and the surface of the lower edge of the air outlet are in the same plane, the fan comprises a plurality of blades, one ends, away from the axis of the fan, of the blades are uniformly distributed with the interlayer towards the side surface of the accommodating cavity, the upper surface, the exhaust fan rotates in the accommodating cavity from the air outlet pipeline to the air inlet pipeline, the exhaust fan is arranged at the air outlet, and the air exhaust direction of the exhaust fan is aligned to the blades and the air outlet pipeline simultaneously.

Through adopting above-mentioned technical scheme, arranging the parallel interlayer in holding intracavity in fan axle center, when outdoor air is good, rotate through arranging the fan and make first half and the lower half of row fan air exhaust respectively and supply air, realize the exchange of indoor outer air, when outdoor air is not good, the exhaust fan stop function to the blade of arranging the fan separates indoor outer air, reduces the pollution of room air.

The present invention in a preferred example may be further configured to: the row fans are detachably mounted in the accommodating cavities.

Through adopting above-mentioned technical scheme, when row fan live time is of a specified duration, can deposit more dust on the row fan, it probably can make dust get into indoorly to open when arranging the fan, influences the ventilation effect, will arrange the fan this moment and set up to dismantling the connection, can dismantle the row fan when arranging on the fan that deposit dust is more and get off and clear up, guarantee the effect of taking a breath.

The present invention in a preferred example may be further configured to: the row fan is characterized by further comprising an inner sleeve, an inflation cavity is arranged inside the side wall of the inner sleeve, the blades are uniformly arranged around the axis of the inner sleeve and are arranged on the outer side surface of the inner sleeve, the blades are made of soft materials, and the interior of each blade is communicated with the inflation cavity.

Through adopting above-mentioned technical scheme, when having deposited a small amount of dust on the row fan, can shake a small amount of dust through the vibration of aerifing with the gassing and fall, when the dust that is difficult to shake and falls, can put off the gas of blade and then take out row fan from the jack and carry out further clearance, reach better clearance effect.

The present invention in a preferred example may be further configured to: the row fan further comprises an outer sleeve, one end of the outer sleeve is provided with an open end, the other end of the outer sleeve is provided with a closed end, the inner sleeve is sleeved in the outer sleeve, a through groove is formed in the side wall of the outer sleeve along the length direction, and the blades penetrate through the through groove and extend out of the side face of the outer sleeve.

Through adopting above-mentioned technical scheme, set up the outer sleeve cover in the inner skleeve outside, play the effect of protection inner skleeve, the blade is worn out from the through groove of outer sleeve simultaneously, makes and play the support at blade and inner skleeve junction, and the effect is strutted to guarantee the wall of row fan to the inside and outside air. When the inner sleeve is disassembled, the air in the inner sleeve is only required to be discharged, then the blades are rolled up and are plugged into the gap between the inner sleeve and the outer sleeve from the through grooves, and then the inner sleeve is outwards pulled out to disassemble the inner sleeve.

The present invention in a preferred example may be further configured to: one side face, far away from the opening end, of the closed end of the outer sleeve extends to form a rotating block, the rotating block is in a round table shape, a position, corresponding to the position of the upper cavity of the ventilation pipeline, is provided with an insertion hole, the inner side of the opposite face of the insertion hole on the ventilation pipeline is provided with a rotating groove corresponding to the rotating block in shape, the rotating groove is in a round table groove shape, the outer sleeve is inserted into the insertion hole, and meanwhile, the rotating block is inserted into the rotating groove to rotate.

Through adopting above-mentioned technical scheme, set up the turning block into the round platform shape, make when going out row fan discrepancy jack the turning block change aim at the rotation groove and insert, make the installation of row fan more convenient.

The present invention in a preferred example may be further configured to: the bottom surface of outer sleeve blind end extends towards the open end and is equipped with well core rod, well core rod is gone up to be equipped with spacing along length direction, the inner skleeve medial surface is opened there is the spacing groove, spacing is inserted in the spacing inslot.

Through adopting above-mentioned technical scheme, the inner skleeve is in the outer sleeve, has restricted asynchronous rotation between inner skleeve and the outer sleeve through spacing strip card income spacing inslot to cause the damage to the blade.

The present invention in a preferred example may be further configured to: the inner sleeve upper surface is equipped with the gas tube, the opening part of gas tube sets up the inflating valve, the gas tube is the softwood, well core rod upper end is equipped with the pipeline mounting groove, the gas tube card is in the pipeline mounting groove.

Through adopting above-mentioned technical scheme, it makes when aerifing to set up the gas tube and make conveniently to buckle the gas tube and block into the mounting groove, make row fan when rotating the gas tube can not rock and cause gas leakage.

The present invention in a preferred example may be further configured to: the upper surface of the inner part of the containing cavity and the side wall of the upper end of the vertical part far away from the interlayer are respectively provided with an arc platform, the arc platforms are matched with the rotating arcs of the blades, and when the row fan rotates, two blades are positioned at the arc platforms and matched with the arc platforms.

Through adopting above-mentioned technical scheme, when row fan rotated, two blades were in the arc platform department and agree with the arc platform simultaneously, formed a sealed space, made row fan leakproofness better at the rotation in-process.

The present invention in a preferred example may be further configured to: the number of the exhaust fans is more than one, and the exhaust fans are horizontally arranged at the air outlet in parallel.

Through adopting above-mentioned technical scheme, increase the volume of airing exhaust, make indoor outer air replacement more quick.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the exhaust fan is arranged in the containing cavity, the axis of the exhaust fan is parallel to the interlayer, when the outdoor air is good, the upper half part and the lower half part of the exhaust fan are enabled to exhaust air and supply air respectively through the rotation of the exhaust fan, the exchange of the indoor air and the outdoor air is realized, when the outdoor air is bad, the exhaust fan stops operating, and the blades of the exhaust fan separate the indoor air and the outdoor air, so that the pollution of the indoor air is reduced;

2. the blade uses the material of softwood matter, when arranging the fan on deposited a small amount of dust, can shake a small amount of dust through the vibration of aerifing with the gassing, when the dust that is difficult to shake and falls, can put the gas of blade and then take out inner sleeve and blade from the jack together and carry out further clearance, reach better clearance effect.

Drawings

Fig. 1 is a schematic structural view of a conventional ventilation apparatus.

Fig. 2 is a sectional view of the ventilation device of the present invention.

Fig. 3 is a partially enlarged view of fig. 2 at a showing the row fan.

Figure 4 is a schematic view of the construction of the outer sleeve.

Figure 5 is a schematic view of the inner sleeve.

Figure 6 is a slice cross-sectional view of the inner sleeve.

Figure 7 is a schematic view of the inner sleeve mounted within the outer sleeve.

FIG. 8 is an enlarged partial view of FIG. 7 at B illustrating the installation of the fill tube.

Figure 9 is a cross-sectional view of the inner sleeve installed within the outer sleeve.

Fig. 10 is a partial cross-sectional view of a ventilator embodying an outer sleeve installed in a ring duct.

Fig. 11 is a schematic view of the structure of the ventilation device.

FIG. 12 is a cross-sectional view of the air exchange device embodying the rotation of the vanes to the first arc station.

FIG. 13 is a cross-sectional view of the air interchanger showing the rotation of the vanes to the third arc station.

In the figure, 1, an exhaust fan; 2. an air supply fan; 3. a wall body; 4. a ventilation duct; 41. a horizontal portion; 411. an interlayer; 412. an air outlet pipe; 413. an air intake duct; 42; a vertical portion; 421. an air outlet; 43. an accommodating cavity; 44. a jack; 45. an external thread; 46. a threaded cap; 47. a door panel; 48. an arc table; 481. a first arc table; 482. a second arc table; 483. a third arc table; 49. a rotating groove; 5. arranging fans; 51. an outer sleeve; 511. an open end; 512. a closed end; 513. a center pole; 5131. a placing groove; 514. a limiting strip; 515. a through groove; 516. rotating the block; 52. an inner sleeve; 521. a limiting groove; 522. an inflation cavity; 53. a blade; 54. an inflation tube; 55. an air valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, the ventilation device for reducing indoor air pollution according to the present invention includes a ventilation duct 4 and a fan 5 disposed inside the ventilation duct 4.

The ventilation duct 4 includes a horizontal portion 41 and a vertical portion 42 communicating with one end of the horizontal portion 41.

The horizontal portion 41 has a square cross section in the vertical length direction, the horizontal portion 41 is horizontally disposed in the wall 3 and penetrates through the wall 3, the vertical portion 42 is perpendicular to the horizontal portion 41 and disposed on the vertical wall of the wall 3, and the outer side surface of the vertical portion 42 is tightly attached to the wall 3.

The horizontal portion 41 is further provided with a partition 411, the partition 411 is in a square plate shape, and the partition 411 is horizontally arranged in the horizontal portion 41 to divide the horizontal portion 41 into an air outlet pipeline 412 and an air inlet pipeline 413, wherein the air outlet pipeline 412 is arranged above the horizontal portion, and the air inlet pipeline 413 is arranged below the horizontal portion.

Meanwhile, the side wall of the upper end of the vertical part 42, which is far away from the interlayer 411, is provided with an air outlet 421 penetrating through the vertical part 42, the lower edge of the air outlet 421 is flush with the upper surface of the interlayer 411 on the horizontal plane, two exhaust fans 1 with axes arranged in parallel are installed at the air outlet 421, and the air exhaust directions of the two exhaust fans 1 face the direction of the air outlet pipeline 412. The exhaust fan 1 is the prior art, has the function of airing exhaust, and the concrete structure thereof is determined according to the actual situation.

In addition, the cavity at the bent portion where the horizontal portion 41 and the vertical portion 42 communicate is called as a receiving cavity 43, and the row fan 5 is installed in the receiving cavity 43, and the axis of the rotation shaft of the row fan 5 is perpendicular to the axis of the rotation shaft of the exhaust fan 1.

Moreover, the accommodating cavity 43 is provided with an arc platform 48, the arc platform 48 includes a first arc platform 481 arranged right above the accommodating cavity 43, and a lower bottom surface of the first arc platform 481 is an arc surface which is recessed upwards.

Meanwhile, a second arc platform 482 is arranged inside the vertical portion 42 and below the air outlet 421, a third arc platform 483 is arranged in the air inlet pipe 413 and in the direction of the accommodating cavity 43, the upper surface of the third arc platform 483 is an arc surface, and the arc surface is recessed downward. The first arc platform 481, the second arc platform 482 and the third arc platform 483 are all matched with the row fan 5.

Referring to fig. 3, the row fan 5 comprises an outer sleeve 51 and an inner sleeve 52 sleeved in the outer sleeve 51, and the row fan 5 further comprises blades 53 communicated with the inner sleeve 52.

Referring to fig. 4, the outer sleeve 51 is generally in the shape of an elongated cylinder, and one end of the outer sleeve 51 in the length direction is an open end 511, and the other end is a closed end 512. The side wall of the outer sleeve 51 is provided with a plurality of through grooves 515 penetrating through the outer sleeve 51, wherein the number of the through grooves 515 is six, and the through grooves 515 extend along the length direction of the outer sleeve 51 and are uniformly distributed around the axis of the outer sleeve 51.

Meanwhile, a rotating block 516 is arranged on the side surface of the closed end 512 far away from the open end 511, and the rotating block 516 is in a round table shape and is arranged in a converging mode from the open end 511 to the closed end 512.

Further, a center rod 513 is coaxially provided in the outer sleeve 51, the center rod 513 extends from the bottom surface of the inside of the outer sleeve 51 to the open end 511, and the length of the center rod 513 is equal to the length of the side wall of the outer sleeve 51. And a plurality of limiting strips 514 extend along the length direction of the central rod 513, the cross section of each limiting strip 514, which is perpendicular to the length direction, is square, the length of each limiting strip 514 is equal to that of the central rod 513, and the limiting strips 514 are uniformly arranged around the axis of the central rod 513.

A receiving groove 5131 is provided at one end of the center rod 513 at the open end 511, and the receiving groove 5131 is in the form of a square groove and extends from the side wall of the center rod 513 to the axial center in the radial direction of the center rod 513.

Referring to fig. 5 and 6, the inner sleeve 52 is also generally elongate and cylindrical in shape with its center disposed therethrough. And the medial surface of inner sleeve 52 is equipped with a plurality of spacing grooves 521, and spacing groove 521 is the square groove that matches with spacing strip 514 shape, and spacing groove 521 runs through inner sleeve 52 along the length direction of inner sleeve 52 and sets up and evenly arranges along the edge of inner sleeve 52 inner circle.

Meanwhile, the sidewall of the inner sleeve 52 is hollow to form an air inflation cavity 522, and a plurality of vanes 53 are arranged on the outer side surface of the sidewall of the inner sleeve 52, wherein the number of the vanes 53 is six. And the outer side wall of the inflating chamber 522 and the vane 53 are made of a soft material, here, a PE film, and the inside of the vane 53 is disposed to be hollow, and the inside of the vane 53 is communicated with the inflating chamber 522. And each of the vanes 53 has a shape gradually enlarged from the inner sleeve 52 to an end away from the inner sleeve 52 when the vanes 53 are filled with air.

Moreover, an inflation tube 54 is disposed on one side of the two ends of the inner sleeve 52 in the length direction, an air valve 55 is disposed at an opening of the inflation tube 54, the air valve 55 is in the prior art, has an inflation and deflation function, and can maintain a sealed state after inflation, and the specific structure thereof is determined according to the actual situation, and will not be described in detail herein.

Referring to fig. 7 and 8, when the inner sleeve 52 is nested in the outer sleeve 51, the end of the inflation tube 54 faces the open end 511, and the inflation tube 54 is snapped into the seating groove 5131.

Referring to fig. 9, the central rod 513 is inserted into the inner ring of the inner sleeve 52 and the position-limiting bar 514 is locked in the position-limiting groove 521, while the blades 53 extend out of the through-groove 515 (see fig. 4) of the outer sleeve 51, and a gap is left between the inner sidewall of the outer sleeve 51 and the outer sidewall of the inner sleeve 52.

Referring to fig. 10 and 11, a plug hole 44 penetrating through the ventilation duct 4 is formed in a position, close to the air outlet 421 (see fig. 2), of a side surface of the horizontal portion 41 of the ventilation duct 4 on the side of the open end 511 of the outer sleeve 51, the diameter of the plug hole 44 is equal to that of the outer sleeve 51, an external thread 45 is arranged on the edge of the plug hole 44 on the ventilation duct 4 in a circle, a threaded cover 46 is arranged at the external thread 45, and the threaded cover 46 is in threaded fit with the external thread 45 to close and hermetically connect the plug hole 44. And a door plate 47 hinged to the ventilation duct 4 is provided beside the insertion hole 44, and the door plate 47 can be opened and closed in a horizontal direction.

Meanwhile, a rotating groove 49 matched with the rotating block 516 is formed in the inner side surface of the ventilation pipe 4 on the side of the closed end 512, the outer sleeve 51 is inserted into the insertion hole 44, the rotating block 516 on the outer sleeve 51 is inserted into the rotating groove 49, and the outer sleeve 51 is installed in the ventilation pipe 4, so that the outer sleeve 51 can rotate around the central axis of the ventilation pipe 4. And the surface of the open end 511 of the outer sleeve 51 is flush with the surface of the external thread 45 when the outer sleeve 51 is inserted into the insertion hole 44.

Referring to fig. 12, when the blade 53 rotates and just rotates out of the first arc platform 481, the next blade 53 just rotates into the first arc platform 481, and the two blades 53 and the first arc platform 481 form a closed space to separate the inside and the outside of the room.

Referring to fig. 13, when the blade 53 rotates and just rotates out of the third arc platform 483, the next blade 53 just rotates into the third arc platform 483, and at this time, the two blades 53 and the third arc platform 483 form a closed space to separate the inside and the outside of the room.

The implementation principle of the embodiment is as follows:

when the outdoor air is good, when the indoor air is poor, exhaust fan 1 can be opened, exhaust fan 1 rotates fast and discharges the indoor air towards exhaust fan 5, then blows exhaust fan 5 and rotates and send indoor air into outlet pipe 412 and outwards discharge, and when exhaust fan 5 rotated, the outdoor air in inlet pipe 413 was sent into indoor through exhaust fan 5, has realized the quick replacement of indoor outer air.

When the outdoor air is not good, the row fan 5 stops operating, and the blades 53 of the row fan 5 separate the indoor and outdoor air, reducing the indoor air pollution.

Meanwhile, the blades 53 are made of soft materials and can be inflated, when a small amount of dust is deposited on the row fan 5, the small amount of dust can be shaken off through the vibration of inflation and deflation, when the dust which is difficult to shake off exists, the air of the blades 53 can be discharged, then the door plate 47 is opened, the blades 53 are rolled up from the door plate 47 and then are plugged back into the gap between the inner sleeve 52 and the outer sleeve 51 from the through groove 515, and then the inner sleeve 52 and the blades 53 are pulled out together from the jack 44 for further cleaning, so that a better cleaning effect can be achieved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. An air interchanger capable of reducing indoor air pollution, comprising an air interchanging duct (4), wherein the air interchanging duct (4) comprises a horizontal part (41), and the horizontal part (41) penetrates through a wall body (3), characterized in that: be equipped with interlayer (411) in horizontal part (41), interlayer (411) separate horizontal part (41) and divide into outlet air pipe (412) and admission line (413), pipeline (4) of taking a breath includes vertical portion (42), the lateral wall that interlayer (411) were kept away from to the upper end of vertical portion (42) is opened there is air exit (421), air exit (421) aim at outlet air pipe (412), the cavity of the department of buckling of horizontal part (41) and vertical portion (42) is called holding chamber (43), the installation is equipped with row fan (5) in holding chamber (43), the axle center of row fan (5) is on a parallel with interlayer (411), the axle center of row fan (5), the surface on border is in the coplanar under horizontal part (41) and air exit (421), row fan (5) are including a plurality of blades (53), one end that row fan (5) were kept away from in axle center is kept away from to blade (53) do not towards the side of holding chamber (43), with interlayer (411) side, The side butt that last top surface, admission line (413) of holding chamber (43) and holding chamber (43) are close to air exit (421), exhaust fan (5) rotate towards admission line (413) direction from outlet duct (412) in holding chamber (43), air exit (421) department is equipped with exhaust fan (1), blade (53) and outlet duct (412) are aimed at simultaneously to the direction of airing exhaust of exhaust fan (1).

2. The ventilating device as claimed in claim 1, wherein the ventilating device comprises: the row fan (5) is detachably arranged in the accommodating cavity (43).

3. An air exchange device for reducing indoor air pollution according to claim 2, wherein: arrange fan (5) still including inner skleeve (52), inner skleeve (52) lateral wall inside is equipped with inflatable chamber (522), blade (53) center on inner skleeve (52) axle center align to grid and install in the lateral surface of inner skleeve (52), blade (53) are soft material, inside and inflatable chamber (522) intercommunication of blade (53).

4. A ventilating device for reducing indoor air pollution according to claim 3, wherein: the row fan (5) further comprises an outer sleeve (51), one end of the outer sleeve (51) is provided with an opening end (511), the other end of the outer sleeve is provided with a closed end (512), the inner sleeve (52) is sleeved in the outer sleeve (51), a through groove (515) is formed in the side wall of the outer sleeve (51) along the length direction, and the blades (53) penetrate through the through groove (515) and extend out of the side face of the outer sleeve (51).

5. The ventilating device as claimed in claim 4, wherein the ventilating device comprises: one side of the closed end (512) of the outer sleeve (51) far away from the open end (511) extends to form a rotating block (516), the rotating block (516) is in a circular truncated cone shape, a corresponding position of a cavity on the ventilation pipeline (4) is provided with a jack (44), the opposite side inner side of the jack (44) on the ventilation pipeline (4) is provided with a rotating groove (49) corresponding to the shape of the rotating block (516), the rotating groove (49) is in a circular truncated cone groove shape, the outer sleeve (51) is inserted into the jack (44), and meanwhile the rotating block (516) is inserted into the rotating groove (49) for rotation.

6. An air exchange device for reducing indoor air pollution according to claim 5, wherein: the bottom surface of outer sleeve (51) closed end (512) extends towards open end (511) and is equipped with well core rod (513), be equipped with spacing strip (514) along length direction on well core rod (513), inner skleeve (52) medial surface is opened has spacing groove (521), spacing strip (514) are inserted in spacing groove (521).

7. An air exchange device for reducing indoor air pollution according to claim 6, wherein: inner skleeve (52) upper surface is equipped with gas tube (54), the opening part of gas tube (54) sets up inflating valve (55), gas tube (54) are the soft material, well core rod (513) upper end is equipped with pipeline mounting groove (5131), gas tube (54) card is in pipeline mounting groove (5131).

8. The ventilating device as claimed in claim 1, wherein the ventilating device comprises: the upper surface of the inner part of the accommodating cavity (43), the side wall of the upper end of the vertical part (42) far away from the interlayer (411) and the lower surface of the air inlet pipeline (413) are respectively provided with an arc platform (48), the arc platform (48) is matched with a circular arc of the blade (53) in a rotating mode, and when the row fan (5) rotates, two blades (53) are located at the arc platform (48) and matched with the arc platform (48).

9. An air exchange device for reducing indoor air pollution according to claim 2, wherein: the number of the exhaust fans (1) is more than one, and the exhaust fans are horizontally arranged at the exhaust outlet (421) in parallel.