CN220669642U - Air treatment device - Google Patents

Abstract

The application discloses an air treatment device belongs to air treatment technical field. The air treatment device comprises: a shell provided with an air inlet for air inlet or air outlet; the wind gap flange is connected wind gap department, the wind gap flange includes: the flange connecting pipe is provided with n layers sleeved layer by layer, n is more than 1, the flange connecting pipe at the outermost layer in the n layers is an outer layer flange connecting pipe, the rest part of the flange connecting pipe except for the outer layer is an inner layer flange connecting pipe, the outer layer flange connecting pipe is connected with the air port, and one end, far away from the air port, of the flange connecting pipe is an axial outer end; the two adjacent layers of flange connecting pipes are connected through a knock-out plate, and a space is reserved between the knock-out plate and the axial outer end of the inner layer of flange connecting pipe. The air treatment device can be adapted to air pipes with various sizes, and is convenient for field installation.

Description

Air treatment device

Technical Field

The application relates to the technical field of air treatment, in particular to an air treatment device.

Background

Air handling units installed in suspended ceilings, such as ductwork, central air conditioning, total heat exchangers, etc., require a connection duct to communicate the interior and exterior of the room. However, when the air treatment device is installed on site, the size of the air pipe penetrating beam is limited, and connectors with various sizes are required to be prepared on site, so that a plurality of inconveniences are brought to the on-site installation.

Disclosure of Invention

The application provides an air treatment device, but its wind gap flange department adaptation multiple size's tuber pipe has made things convenient for field installation.

In one aspect of the present application, an air treatment device comprises: a shell provided with an air inlet for air inlet or air outlet; the wind gap flange, connect in wind gap department, the wind gap flange includes: the flange connecting pipe is provided with n layers sleeved layer by layer, n is more than 1, the flange connecting pipe at the outermost layer in the n layers is an outer layer flange connecting pipe, the rest part of the flange connecting pipe except for the outer layer is an inner layer flange connecting pipe, the outer layer flange connecting pipe is connected with the air port, and one end of the flange connecting pipe, which is far away from the air port, is an axial outer end; the two adjacent layers of flange connecting pipes are connected through a knock-out plate, and a space is reserved between the knock-out plate and the axial outer end of the inner layer flange connecting pipe.

Because n layers of flange connecting pipes are arranged on the tuyere flange, the flange connecting pipes of each layer can be matched with air pipes of corresponding sizes, thereby realizing the multiple reducing function of the tuyere flange, avoiding the problem that pipe joints of different sizes are required to be equipped on site, facilitating the model selection of the air pipes on site, and having the advantages of flexible installation and convenient site construction.

Every layer of flange connection pipe in the wind gap flange is all connected through the knock-out plate, only need the knock-out when on-the-spot installation unnecessary flange connection pipe can, the operation is very convenient, has guaranteed installation effectiveness.

The mode that the wind gap flange adopted radial layer cover connects the multilayer flange to take over, compares in prior art and adopts the big problem of axial size that echelonment reducing structure brought, this application can not increase axial size because of the reducing, has axial compact structure, occupation space is little advantage.

In some embodiments, the knock-out plate is provided with frangible knock-out wires located at locations on the knock-out plate that are connected to the inner wall of the flange adapter.

In some embodiments, the knockout plate coincides with the gap between adjacent two layers of flange nipples on a projection perpendicular to the axial direction of the tuyere flange.

In some embodiments, the knockout plate is connected at an axially inner end of the inner layer flanged nipple.

In some embodiments, the knockout plate is spaced from the tuyere.

In some embodiments, the axially outer end of the inner flange nipple does not protrude beyond the outer flange nipple.

In some embodiments, the flanged nipple is cylindrical or square.

In some embodiments, the tuyere flange is an integrally formed structure.

In another aspect of the present application, an air treatment device comprises: a shell provided with an air inlet for air inlet or air outlet; the wind gap flange, connect in wind gap department, the wind gap flange includes: the flange connecting pipe is provided with n layers sleeved layer by layer, n is more than 1, the flange connecting pipe at the outermost layer in the n layers is an outer layer flange connecting pipe, the rest part of the outer layer flange connecting pipe is an inner layer flange connecting pipe, and the outer layer flange connecting pipe is connected with the air port; and knock-out plates are connected between two adjacent layers of flange connection pipes and in the flange connection pipe of the innermost layer.

Because the knock-out plate seals the gap in the tuyere flange, the tuyere can be sealed through the tuyere flange, and dirt, impurities and the like are prevented from entering the device.

In some embodiments, the knockout plate coincides with a void in the tuyere flange on a projection perpendicular to the axial direction of the tuyere flange.

Drawings

FIG. 1 illustrates a schematic diagram of an air treatment device according to some embodiments;

FIG. 2 illustrates a schematic view of a body of an air treatment device according to some embodiments;

FIG. 3 illustrates a perspective view of a tuyere flange of an air treatment device according to some embodiments;

FIG. 4 illustrates a partial cross-sectional schematic view of an air treatment device according to some embodiments;

FIG. 5 illustrates a side view of a tuyere flange of an air treatment device according to some embodiments;

FIG. 6 illustrates a schematic cross-sectional view of a tuyere flange of an air treatment device according to other embodiments;

FIG. 7 illustrates a schematic diagram of an air treatment device in an application scenario, according to some embodiments;

FIG. 8 illustrates a schematic diagram of an air treatment device in another application scenario, according to some embodiments;

FIG. 9 illustrates a schematic diagram of an air treatment device in yet another application scenario, according to some embodiments;

FIG. 10 illustrates a schematic diagram of an air treatment device in yet another application scenario, according to some embodiments;

in the above figures, 100, an air treatment device; 10. a housing; 11. an air port; 111. a fresh air inlet; 112. a fresh air outlet; 113. a return air inlet; 114. a return air outlet; 12. fresh air inlet cavity; 13. fresh air outlet cavity; 14. a return air inlet cavity; 15. a return air outlet cavity; 20. a heat exchange core; 31. a blower; 32. an exhaust fan; 40. an air duct; 50. a tuyere flange; 51a, outer layer flange connection pipe; 51b, inner layer flange adapter; 51c, an axially outer end; 51d, an axially inner end; 521. a first layer of flange connection pipe; 522. a second layer of flange connection pipe; 523. a third layer of flange connection pipe; 524. a fourth layer of flange connecting pipe; 53. a knock-out plate; 531. a first knock-out plate; 5311. a first striking line; 532. a second knock-out plate; 5321. a second striking line; 533. a third knock-out plate; 5331. a third striking line; 534. a fourth knock-out plate; 5341. a fourth striking line; 60. a machine body.

Detailed Description

For purposes of clarity and implementation of the present application, the following description will make clear and complete descriptions of exemplary implementations of the present application with reference to the accompanying drawings in which exemplary implementations of the present application are illustrated, it being apparent that the exemplary implementations described are only some, but not all, of the examples of the present application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any particular number of features being indicated. Thus, a feature defining "a first", "a second" or the like may include one or more such features explicitly or implicitly. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

An air treatment device is a device that treats air, such as an air conditioner, a fresh air machine, a dehumidifier, and the like. The air conditioner is mainly used for adjusting the temperature of indoor air, the fresh air machine is mainly used for providing fresh air for the indoor, and the dehumidifier is mainly used for adjusting the humidity of the indoor air.

Some of the air treatment devices are of a type requiring suspended ceiling installation and connection of an air duct, for example, an air duct machine in an air conditioner, a central air conditioner, and the like, and a total heat exchanger in a fresh air machine. These machines all require connection to the indoor or outdoor through ductwork.

The air treatment device is taken as a total heat exchanger for example for description:

the total heat exchanger is an efficient and energy-saving heat recovery device, and pre-cooling or pre-heating the introduced fresh air by recovering the waste heat of the exhaust gas. The working principle is as follows: when the product works, indoor exhaust air and fresh air flow through the heat exchange core body, and the total heat exchange process is caused at the heat exchange core body due to the temperature difference and the steam partial pressure difference of the two air flows. When the air conditioner runs in summer, fresh air obtains cold energy from air exhaust of the air conditioner, so that the temperature is reduced, and meanwhile, the fresh air is dried by air of the air conditioner, so that the moisture content of the fresh air is reduced; when the air conditioner runs in winter, fresh air is exhausted from the air conditioning chamber to obtain heat, and the temperature is increased. Therefore, the fresh air is enabled to recover energy from air-conditioning exhaust through the total heat exchange process of the heat exchange core body.

Referring to fig. 1 and 2, the air treatment device 100 includes a body 60 and a tuyere flange 50.

The machine body 60 includes a housing 10, a heat exchange core 20, a blower 31, and an exhaust fan 32.

The casing 10 is rectangular, and four air ports 11, namely a fresh air inlet 111, a fresh air outlet 112, a return air inlet 113 and a return air outlet 114, are arranged on the side wall of the casing 10.

The heat exchange core 20 is arranged in the shell 10, and the heat exchange core 20 and the partition plate can divide the interior of the shell 10 into four cavities, namely a fresh air inlet cavity 12, a fresh air outlet cavity 13, a return air inlet cavity 14 and a return air outlet cavity 15.

Wherein, new trend air inlet chamber 12 intercommunication is between heat exchange core 20 and fresh air entry 111, and new trend air outlet chamber 13 intercommunication is between heat exchange core 20 and fresh air export 112, and return air inlet chamber 14 intercommunication is between heat exchange core 20 and return air entry 113, and return air outlet chamber 15 intercommunication is between heat exchange core 20 and return air export 114.

The blower 31 is arranged in the fresh air outlet cavity 13, and the exhaust fan 32 is arranged in the return air outlet cavity 15. When the blower 31 works, outdoor fresh air enters the fresh air inlet cavity 12 through the fresh air inlet 111, then enters the fresh air outlet cavity 13 after exchanging heat with return air at the heat exchange core 20, and is blown out of the shell 10 from the fresh air outlet 112 under the driving of the blower 31; when the exhaust fan 32 works, indoor air enters the return air inlet cavity 14 through the return air inlet 113, then enters the return air outlet cavity 15 after exchanging heat with fresh air at the heat exchange core 20, and is exhausted from the housing 10 through the return air outlet 114 under the driving of the exhaust fan 32.

The fresh air inlet 111 and the return air outlet 114 are respectively connected to the outside through the air pipes 40, and the fresh air outlet 112 and the return air inlet 113 are respectively connected to the inside through the air pipes 40. Outdoor air is introduced into the housing 10 and blown indoors by the duct 40, and indoor air is introduced into the housing 10 and discharged outdoors by the duct 40.

The air conditioning device is usually installed on site, and due to different site environments, the penetration size of the air duct 40 is limited, and connectors with various sizes are often required to be prepared to realize the connection between the air ducts with different sizes and the air port 11; if the connector is damaged or lost, the round trip time for acquiring the connector is increased, and bad experience is brought to installers and users.

Referring to fig. 3 and 4, the air treatment device of the present application is designed for a tuyere flange 50, and the tuyere flange 50 is connected to the tuyere 11, and the connection of the air duct 40 and the housing 10 is achieved by connecting the air duct 40 to the tuyere flange 50.

The tuyere flange 50 comprises n layers of flange connection pipes sleeved layer by layer, wherein n is an integer not less than 2;

the flange connection pipe can be cylindrical or square cylindrical. The outermost flange nipple of the flange nipples is connected to the tuyere 11 of the housing 10 by means of screw threads or is connected to the tuyere 11 of the housing 10 by means of screws.

The n-layer flange joint includes a first-layer flange joint 521, a second-layer flange joint 522, which are sequentially provided from the outer layer to the inner layer. Wherein adjacent two layers of flange connection pipes are connected through a knock-out plate 53.

Illustratively, n=4, the flange taps include a first layer flange tap 521, a second layer flange tap 522, a third layer flange tap 523, and a fourth layer flange tap 524.

A first knock-out plate 531 is connected between the first layer flange connection pipe 521 and the second layer flange connection pipe 522, a second knock-out plate 532 is connected between the second layer flange connection pipe 521 and the third layer flange connection pipe 522, and a third knock-out plate 533 is connected between the third layer flange connection pipe 523 and the fourth layer flange connection pipe 524.

Each layer of flange connection pipe can be matched with the air pipes 40 with different sizes, and the sizes of the air pipes 40 matched with each layer of flange connection pipe gradually decrease from outside to inside. Thus, the tuyere flange 50 of the present application can achieve multiple diameter variation.

During field installation, the flange connection pipes matched with the air pipe can be selected according to the size of the air pipe to be connected, the selected layer of flange connection pipe is called a target flange connection pipe layer, and then the knock-off plate connected with the inner wall of the target flange connection pipe layer is knocked off, so that the flange connection pipe layer in the target flange connection pipe layer and the knock-off plate fall together.

For example, when the field air duct 40 is fitted to the first-layer flanged pipe 521, the first-layer knock-out plate 531 connected to the first-layer flanged pipe 521 is knocked off, so that the second-layer flanged pipe 522 is separated from the first-layer flanged pipe 521 along with the first-layer knock-out plate 531, thereby achieving that ventilation in the first-layer flanged pipe 521 is not blocked. When the field air duct 40 is fitted to the second-layer flanged pipe 522, the second-layer knock-out plate 532 connected to the inner wall of the second-layer flanged pipe 522 is knocked out, so that the third-layer flanged pipe 523 is separated from the second-layer flanged pipe 522 along with the second-layer knock-out plate 532, thereby realizing that ventilation in the second-layer flanged pipe 522 is not blocked.

In this application, because the n-layer flange takeover that has set up the cover layer upon layer on the wind gap flange 50 has realized the adaptation of multiple unidimensional tuber pipe to avoided the problem that needs on-the-spot different size coupling of being equipped with, made things convenient for the model selection of on-the-spot tuber pipe of installation, had nimble installation, made things convenient for the advantage of on-the-spot construction.

In the application, because the two adjacent layers of flange connecting pipes on the tuyere flange 50 are connected through the knock-out plate 53, only the knock-out plate 53 connected with the inner wall of the target flange connecting pipe layer is required to be knocked off during field installation, and the operation is very convenient.

The mode that adopts radial layer cover in this application wind gap flange 50 connects multilayer flange takeover, compares the problem that the axial size that adopts echelonment reducing structure to bring in prior art is big, and this application can not increase axial size because of the reducing, has axial compact structure, occupation space little advantage.

If the fan adopts the AC motor air supply in the air treatment device, the fan can't finely adjust specific wind speed, can only roughly adjust according to voltage, and this application just can fall different knockout plates according to actual demand, for example, when needs wind speed is partial little, select the knockout plate that falls to lean on the inlayer, when needs wind speed is partial big, select the knockout plate that falls to lean on the inlayer.

For convenience of description, among the flange taps, the first layer of flange tap is also called an outer layer flange tap 51a, and the n-1 layer of flange tap inside the outer layer flange tap 51a is called an inner layer flange tap 51b; the end of the tuyere flange 50 adjacent to the tuyere 11 is referred to as an axial inner end 51d, and the end opposite to the axial inner end 51d is referred to as an axial outer end 51c.

In some embodiments of the present application, the knockout plates 53 are coplanar between each layer of flanged nipples, in the present example, knockout plates 53 are connected at the axially inner ends 51d of inner layer flanged nipples 51 b.

On the knock-out plate 53, in the radial direction, a portion corresponding to between the first-layer flange connection pipe 521 and the second-layer flange connection pipe 522 is a first knock-out plate 531, a portion corresponding to between the second-layer flange connection pipe 522 and the third-layer flange connection pipe 523 is a second knock-out plate 532, and a portion corresponding to between the third-layer flange connection pipe 523 and the fourth-layer flange connection pipe 524 is a third knock-out plate 533.

Referring to fig. 5, a striking line is provided at a position on the striking plate 53 connected to the inner wall of each layer of flange nipple. The first knock-out plate 531 has a first knock-out line 5311 at a position connected to the inner wall of the first-stage flange adapter 521, the second knock-out plate 532 has a second knock-out line 5321 at a position connected to the inner wall of the second-stage flange adapter 522, and the third knock-out plate 533 has a third knock-out line 5331 at a position connected to the inner wall of the third-stage flange adapter 523.

Referring to fig. 7, when the first tap line 5311 is struck, the first, second, third and inner tap plates 531, 532, 533 and 51b are dropped together, leaving only the first-layer flanged pipe 521, and the air duct 40 is connected to the first-layer flanged pipe 521; referring to fig. 8, when the second tap line 5321 is struck, the second knock-out plate 532, the third-layer flange adapter 523, the third knock-out plate 533, and the fourth-layer flange adapter 524 are dropped together, leaving the first-layer flange adapter 521 and the second-layer flange adapter 522, and the air duct 40 is connected to the second-layer flange adapter 522; referring to fig. 9, when the third tap line 5331 is struck, the third tap plate 533 and the fourth layer flanged pipe 524 drop together, leaving the first layer flanged pipe 521, the second layer flanged pipe 522, and the third layer flanged pipe 523, and the air duct 40 is connected to the third layer flanged pipe 523; referring to fig. 10, when the fourth tap line 5341 is struck, the fourth tap plate 534 falls, leaving the first layer flanged pipe 521, the second layer flanged pipe 522, the third layer flanged pipe 523, and the fourth layer flanged pipe 524, and the air duct 40 is connected to the fourth layer flanged pipe 524.

In other embodiments, the knock-out plates may also be arranged non-coplanar with one another. For example, referring to fig. 6, the fourth knock-out plate 533 is connected to the middle of the inner flange nipple 51b instead of the axially outer end 51d.

According to the embodiment of the present application, the axially outer end 51c of the inner flange nipple 51b does not protrude from the outer flange nipple 51a. The inner flange adapter 51b is completely located in the outer flange adapter 51a, so that the length of the outer flange adapter 51a is the length of the tuyere flange 50, and the axial dimension of the tuyere flange 50 is not increased due to the arrangement of the inner flange adapter 51 b.

In the present example, the axially outer end 51c of the inner flange nipple 51b is flush with the outer end of the outer flange nipple 51a. If the axial outer end 51c of the inner flange connection pipe 51b is too far recessed from the outer flange connection pipe 51a, the inner flange connection pipe 51b needs to be extended into a deeper part inside the outer flange connection pipe 51a to operate, which brings certain inconvenience, so that the axial outer end 51c of the inner flange connection pipe 51b is flush with the outer end of the outer flange connection pipe 51a, which is a preferred embodiment, and the operation is most convenient on the premise of ensuring the unchanged axial dimension.

In this application, the air duct 40 may be connected to the tuyere flange 50 by a heat shrink tube. When the air duct 40 is installed, the air duct 40 is sleeved on the target flange connecting pipe layer, the heat shrinkage pipe is sleeved on the target flange connecting pipe layer, and the heat shrinkage pipe is subjected to heat shrinkage by blowing hot air to the heat shrinkage pipe, so that the air duct 40 is connected with the air port flange 50.

In other embodiments, the air duct 40 may also be attached to the tuyere flange 50 by a tie, a clip, or the like. When in installation, the air pipe 40 is sleeved on the target flange connecting pipe layer, and then a binding belt or a clamp is tied to tighten the air pipe 40 on the tuyere flange 50.

In the above connection form of the blast pipe 40 and the tuyere flange 50, if the knock-out plate 53 is close to the axially outer end 51c of the inner layer flange nipple 51b, the axial connection length of the blast pipe 40 and the inner layer flange nipple 51b is shortened due to the blocking of the knock-out plate 53, resulting in a reduction in connection reliability. The present application thus provides for the knock-out plate 53 to have a distance to the axially outer end 51c of the inner flange nipple 51b, by means of which distance the connection length of the air duct 40 to the inner flange nipple 51b is ensured.

In some embodiments of the present application, there is a space between the knockout plate 53 and the tuyere 11. If the knock-out plate 53 is relatively close to the tuyere 11, when the knock-out plate 53 is knocked out, the dropped portion easily enters into the housing 10 through the tuyere 11, which increases the operation of taking out the dropped portion, resulting in an increase in installation time.

If there is a gap between the knock-out plate 53 and the flanged nipple, wind can circulate through the gap. For example, when the duct 40 is connected to the second-stage flanged pipe 522, the first knock-out plate 531 also exists, and the gap at the first knock-out plate 531 leaks out.

Therefore, in order to avoid air leakage at the tuyere flange 50, the knock-out plate 53 is arranged to seal the gap between the flange connection pipes in the radial direction, in other words, on the projection perpendicular to the axial direction of the tuyere flange 50, the knock-out plate 53 coincides with the gap between the two adjacent flange connection pipes, so that the tightness of the tuyere flange 50 is ensured, and air leakage is effectively prevented.

In some embodiments of the present application, referring to fig. 4, a knock-out plate 53 is also connected in the flange nipple of the innermost layer, which is the nth knock-out plate, and when n=4, is the fourth knock-out plate 534.

Fourth knockout plate 534 radially encloses the interior of fourth tier flange adapter 524. This can make the tuyere flange 50 take a closed state to the outside and prevent dirt, impurities and the like from entering the device. The tuyere flange 50 is connected at the tuyere 11 in the present application, and the tuyere 11 can be sealed, so that the product can be sealed and delivered from the factory without other sealing measures such as wrapping the tuyere flange 50.

The tuyere flange 50 can be formed in an integral injection molding mode, so that the manufacturing work is simpler, and the cost is lower.

According to the first conception, as the n layers of flange connection pipes are arranged on the tuyere flange 50, the flange connection pipe of each layer can be matched with the air pipe 40 with the corresponding size, so that the multiple diameter-changing function of the tuyere flange 50 is realized, the problem that pipe joints with different sizes are required to be equipped on site is avoided, the model selection of the air pipe on the site is convenient, and the air pipe on the site has the advantages of flexible installation and convenience in site construction.

According to the second conception, as each layer of flange connection pipes in the tuyere flange 50 are connected through the knock-out plate 53, only unnecessary flange connection pipes are required to be knocked out during field installation, the operation is very convenient, and the installation efficiency is guaranteed.

The third conception of the present application is that the tuyere flange 50 is connected with the multi-layer flange connecting pipe by adopting a radial layer sleeve, compared with the problem of large axial size caused by adopting a stepped reducing structure in the prior art, the axial size cannot be increased due to reducing, and the tuyere flange has the advantages of compact axial structure and small occupied space.

The fourth concept of the present application is that the knock-out plate closes the gap in the tuyere flange 50, so that the tuyere 11 can be sealed by the tuyere flange 50, and dirt, impurities, and the like are prevented from entering the device.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. An air treatment device, comprising:

a shell provided with an air inlet for air inlet or air outlet;

the wind gap flange is connected wind gap department, the wind gap flange includes:

the flange connecting pipe is provided with n layers sleeved layer by layer, n is more than 1, the flange connecting pipe at the outermost layer in the n layers is an outer layer flange connecting pipe, the rest part of the flange connecting pipe except for the outer layer is an inner layer flange connecting pipe, the outer layer flange connecting pipe is connected with the air port, and one end, far away from the air port, of the flange connecting pipe is an axial outer end;

the two adjacent layers of flange connecting pipes are connected through a knock-out plate, and a space is reserved between the knock-out plate and the axial outer end of the inner layer of flange connecting pipe.

2. The air treatment device according to claim 1, wherein the knock-out plate is provided with a frangible knock-out line, and the knock-out line is located at a position on the knock-out plate connected to the inner wall of the flange adapter.

3. The air treatment device of claim 1, wherein the knock-out plate coincides with a gap between adjacent two layers of flange nipples on a projection perpendicular to an axial direction of the tuyere flange.

4. The air treatment device of claim 1, wherein the knockout plate is connected at an axially inner end of the inner flange nipple.

5. The air treatment device of claim 1, wherein the knockout plate is spaced from the tuyere.

6. An air treatment device according to claim 1, wherein the axially outer end of the inner flanged nipple does not protrude beyond the outer flanged nipple.

7. An air treatment device according to claim 1, wherein the flanged nipple is cylindrical or square cylindrical.

8. The air treatment device of claim 1, wherein the tuyere flange is an integrally formed structure.

9. An air treatment device, comprising:

a shell provided with an air inlet for air inlet or air outlet;

the wind gap flange is connected wind gap department, the wind gap flange includes:

the flange connecting pipe is provided with n layers sleeved layer by layer, n is more than 1, the flange connecting pipe at the outermost layer in the n layers is an outer layer flange connecting pipe, the rest part of the outer layer flange connecting pipe is an inner layer flange connecting pipe, and the outer layer flange connecting pipe is connected with the air port;

and knock-out plates are connected between two adjacent layers of flange connection pipes and in the flange connection pipe of the innermost layer.

10. An air treatment device according to claim 9, wherein,

the knock-out plate coincides with a gap in the tuyere flange on a projection perpendicular to the axial direction of the tuyere flange.