TWM624990U - Air filtering device - Google Patents

Abstract

The novel air filter device comprises an outer cylinder, a cover, and a filter. The cover is connected to the top of the outer cylinder and has an air inlet channel and an exhaust channel. The filter and The exhaust channel of the cover is connected and placed in the filter chamber, the filter includes an inner member and a partition cover, the inner member is connected with the exhaust channel, and includes a chamber and a plurality of air inlet holes, and an air outlet, the partition cover is arranged on the outer circumference of the inner member, the top of the partition cover and the cover and the inner member respectively form an upper space and a lower space. An outer ring channel and an inner ring channel are respectively formed between the outer cylinder and the inner member. The air filter device of the present invention has a simple structure, does not need to replace the filter material, and can reduce the maintenance cost.

Description

air filter

The new model relates to an air filter device, in particular to a filter device that utilizes the characteristics of fluid vortex impact, inertia, gravity and the like to filter moisture and impurities in compressed air.

The existing air filter device is mainly used to filter particles, moisture, and other impurities in the compressed air; the existing air filter device mainly uses the filter material or filter element installed inside to filter out the particles, moisture, and other impurities in the compressed air. impurities.

However, the use of filter media or filter elements to filter compressed air has the following disadvantages:

1. The filter material or filter element needs to be replaced as a consumable material, and the maintenance cost is relatively high, and the discarded filter material or filter element needs to be discarded, which is not conducive to environmental protection.

2. Impurities and particles in the air are easy to block the filter material or filter element, which affects the air flow and the filtering effect.

In view of the above deficiencies, the main purpose of the present invention is to provide an air filter device for filtering compressed air, which does not require replacement of filter materials or filter elements, and can reduce maintenance costs.

In order to achieve the above purpose, the air filter device provided by the present invention includes: an outer cylinder, a filter chamber is formed in the outer cylinder; a cover body, the cover body is connected to the top of the outer cylinder, and has an inlet an air passage and an exhaust passage, the air inlet passage and the exhaust passage both extend downward and communicate with the filter chamber of the outer cylinder; A filter, the filter is connected with the exhaust passage of the cover and placed in the filter chamber of the outer cylinder, the filter includes: an inner member, the inner member and the exhaust of the cover The passages are connected and include a body, a chamber, a plurality of air inlet holes, and an air outlet pipe, the chamber is formed in the body, and the plurality of air inlet holes are formed in the body and communicate with the chamber and the outer cylinder. a filter chamber, the air outlet pipe extends upward from the top central position of the main body to be connected with the exhaust passage of the cover body, and communicates with the chamber of the inner member and the exhaust passage of the cover body; and a partition cover, the The partition cover is arranged on the outer circumference of the body of the inner member, the partition cover has a cover top, a cover enclosure, and a cover opening, and the cover top is located between the cover body and the top of the body of the inner member. An upper space is formed between the top of the cover and the cover body, a space is formed between the top of the cover and the top of the main body of the inner member, and the surrounding portion of the cover extends downward from the top of the cover and surrounds the outer circumference of the inner member , the bottom end of the enclosure part protrudes from the bottom of the body of the inner member, an outer ring channel is formed between the enclosure part and the outer cylinder, and an inner ring is formed between the enclosure part and the body of the inner member A ring channel, the cover opening is formed at the bottom end of the partition cover.

Utilizing the above-mentioned technical features, the new air filter device has the following efficacy gains:

1. The new model utilizes the structure of the filter installed in the filter chamber to increase the collision area when the compressed air flows in the filter chamber, and makes it easy to form turbulence when the compressed air flows, and when the compressed air collides with the wall surface , to separate the moisture and impurities in the compressed air from the compressed air.

2. The new type has the advantages of simple structure, easy manufacture, easy cleaning, no need to replace the filter material, and can reduce the maintenance cost.

10: outer cylinder

12: Filter room

121: Upper spacing

122: Outer ring channel

123: inner ring channel

124: Lower Spacing

15: exhaust channel

155: On-off valve

20: Cover

22: Air inlet channel

24: Exhaust channel

30, 30A, 30B: Filters

31, 31A, 31B: Internals

311, 311A, 311B: Body

3111, 3111A, 3111B: Top

3112: Circumference

3113, 3113A, 3113B: Bottom

312, 312A, 312B: Compartment

313, 313A, 313B: Outlet tube

314, 314A, 314B: air inlet

315A: Extensions

316A: Container

33, 33A, 33B: Partition cover

331, 331A, 331B: Hood top

332: hood opening

333, 333A, 333B: hood enclosure

335A: Separator

336A: Connecting port

35B: Connecting components

351B: Ontology

352B: Compartment

353B: Connecting Tube

354B: air inlet

H1: Distance

H2: Distance

H3: Distance

H4: Distance

H5: Distance

H6: Distance

D1: outer diameter

D2: inner diameter

D3: Aperture

d1, d2, d3, d4, d5, d6: aperture

d: inner diameter

α: included angle

FIG. 1 is a side cross-sectional view of a first preferred embodiment of the novel.

FIG. 2 is a three-dimensional cross-sectional view of the filter according to the first preferred embodiment of the novel.

FIG. 3 is a side sectional view of the filter according to the first preferred embodiment of the novel.

FIG. 4 is a top sectional view of the filter according to the first preferred embodiment of the novel.

FIG. 5 is a schematic diagram of the operation of the first preferred embodiment of the new type.

FIG. 6 is a side sectional view of the second preferred embodiment of the novel.

7 is a side sectional view of a filter according to the second preferred embodiment of the novel.

FIG. 8 is a side sectional view of the third preferred embodiment of the novel.

Please refer to FIG. 1 , the first preferred embodiment of the novel air filter includes an outer cylinder 10 , a cover 20 , and a filter 30 .

The outer cylinder 10 is a hollow cylinder with a filter chamber 12 formed therein. The bottom of the filter chamber 12 is gradually tapered downward to form a cone shape, and a discharge channel 15 is provided at the bottom of the outer cylinder 10. The discharge channel 15 communicates with the filter chamber 12, and the filtered material in the filter chamber 12 can be discharged from the discharge channel 15. The discharge channel 15 can be provided with an on-off valve 155, and the on-off valve 155 can be used to open or close the discharge channel. 15.

The cover body 20 is connected to the top of the outer cylinder 10 , which is detachably locked to the top of the outer cylinder 10 and closes the outer cylinder 10 , the cover body 20 has an air inlet channel 22 and an exhaust channel 24 , The intake channel 22 and the exhaust channel 24 are located on two sides of the cover 20 respectively, and both the intake channel 22 and the exhaust channel 24 extend downward to communicate with the filter chamber 12 of the outer cylinder 10 .

The filter 30 is connected with the exhaust passage 24 of the cover body 20 and placed in the filter chamber 12 of the outer cylinder 10 . The filter 30 includes an inner member 31 and a partition cover 33 .

Please refer to FIG. 1 to FIG. 4 , the inner member 31 is connected with the exhaust passage 24 of the cover body 20 , and the inner member 31 has a main body 311 , a chamber 312 , a plurality of air inlet holes 314 , and an air outlet pipe 313, the body 311 is in the shape of a hollow cylinder, and has a top 3111, a bottom 3113, and a surrounding portion 3112, and the chamber is surrounded between the top 3111, the bottom 3113, and the surrounding portion 3112 of the body 311 312, the chamber 312 is formed in the body 311, the plurality of air inlet holes 314 are formed in the body 311 and communicate with the filter chamber 12 of the outer cylinder 10 and the chamber 312, the outlet pipe 313 is from the top of the body 311 The central position of the 3111 extends upward and is connected with the exhaust passage 24 of the cover body 20, and communicates with the chamber 312 of the inner member 31 and the exhaust passage 24 of the cover body 20, and the plurality of air inlet holes 314 are formed at intervals. On the top 3111 of the main body 311 , in the first preferred embodiment, as shown in FIG. 4 , the inner member 31 is provided with six air inlet holes 314 , and the air inlet holes 314 are arranged annularly around the The outer circumference of the air outlet pipe 313 .

Please refer to FIGS. 1 to 4 , the partition cover 33 is covered on the outer periphery of the main body 311 of the inner member 31 , located in the filter chamber 12 of the outer cylinder 10 , and located below the cover body 20 , the partition cover 33 has A cover top 331, a cover enclosure 333, and a cover opening 332, the cover top 331 is located between the cover 20 and the top 3111 of the body 311 of the inner member 31, the cover top 331 and the cover 20 An upper space 121 is formed between them, a space is formed between the upper space 121, a lower space 124 is formed between the cover top 331 and the top 3111 of the main body 311 of the inner member 31, and a space is formed between the lower space 124 space, the air outlet pipe 313 of the inner member 31 passes through the cover top 331 and is connected to the exhaust passage 24 of the cover body 20, the air inlet passage 22 of the cover body 20 is located directly above the cover top 331, the cover surrounds The portion 333 extends downward from the top 331 of the cover and surrounds the outer circumference of the main body 311 of the inner member 31 . An outer ring channel 122 is formed between 333 and the inner circumference of the outer cylinder 10, an inner ring channel 123 is formed between the cover surrounding portion 333 and the outer circumference of the main body 311 of the inner member 31, and the cover opening 332 is formed in the partition cover 33 bottom end.

Preferably, please refer to FIG. 3 , the distance H1 between the cover top 331 of the partition cover 33 and the top 3111 of the body 311 of the inner member 31 is greater than or equal to 1 millimeter (mm) and less than or equal to 20 millimeters (mm). ) (1mm≦H1≦20mm); the distance H2 between the top end and the bottom end of the chamber 312 of the inner member 31 is greater than or equal to 1 millimeter (mm) and less than or equal to 1/2 times the cover of the partition cover 33 the bottom surface of the top 331 to the The distance H3 between the bottom ends of the enclosure parts 333 (1mm≦H2≦1/2H3); the outer diameter D1 of the main body 311 of the inner member 31 is greater than or equal to 1/2 times the distance of the enclosure part 333 of the partition cover 33 The inner diameter D2 is smaller than the inner diameter D2 of the cover surrounding portion 333 of the partition cover 33 (1/2D2≦D1<D2).

Please refer to FIG. 4 , the sum of the cross-sectional areas of the air inlet holes 314 is less than or equal to the cross-sectional area of the inner diameter of the air outlet pipe 313 , wherein the diameters of the air inlet holes 314 are respectively d1 , d2 , d3 , d4 , d5 , and d6 . The inner diameter of the gas pipe 313 is d, where (1/2 π d1 ² +1/2 π d2 ² +1/2 π d3 ² +1/2 π d4 ² +1/2 π d5 ² +1/2 π d6 ² )≦(1/2 π d ² ).

Please refer to FIG. 1 and FIG. 5. Due to the arrangement of the filter 30, the filter chamber 12 is separated. During use, the compressed air enters the filter chamber 12 in the outer cylinder 10 through the air inlet channel 22 of the cover body 20. And sequentially flow through the space between the cover top 331 and the upper space 121 between the cover body 20 and the outer ring channel 122 , enter the partition cover 33 through the cover opening 332 , and then pass through the inner ring channel 123 After the space between the lower distance 124 and the lower space 124 is reached, the air inlet hole 314 of the inner member 31 enters the container chamber 312 , and finally flows through the air outlet pipe 313 to the exhaust passage 24 of the cover body 20 for discharge.

When the compressed air enters the filter chamber 12 , it will hit the top surface of the cover top 331 to easily form turbulent flow. Therefore, when the compressed air is flowing, it is easy to hit the top surface of the cover top 331 of the partition cover 33 . , the outer peripheral surface of the enclosure portion 333 , the inner peripheral surface of the enclosure portion 333 , the outer surface of the main body 311 of the inner member 31 , and the wall surface of the chamber 312 of the inner member 31 , and then discharged from the air outlet pipe 313 , the moisture, particles, or other impurities in the compressed air are blocked due to fluid vortex impact, inertia, gravity and other characteristics during the flow of the compressed air, and are no longer filtered out with the flow of the compressed air, The filtered moisture, particles, or other impurities accumulate at the bottom of the filter chamber 12 and can be discharged through the discharge channel 15 .

Further, since the air inlet hole 314 of the inner member 31 is disposed on the top of the main body 311 , after the compressed air flows into the partition cover 33 , it must pass through the space between the inner ring channel 123 and the lower space 124 . , in order to enter the chamber 312 through the air inlet holes 314, and increase the The collision probability of compressed air between the inner peripheral surface of the cover surrounding portion 333 , the bottom surface of the cover top 331 , and the outer surface of the main body 311 of the inner member 31 improves the filtering effect. In addition, the cover top 331 of the partition cover 33 and The distance H1 between the tops 3111 of the body 311 of the inner member 31 is greater than or equal to 1 millimeter (mm) and less than or equal to 20 millimeters (mm) (1mm≦H1≦20mm). The outer diameter of the body 311 of the inner member 31 D1 is equal to or greater than 1/2 times the inner diameter D2 of the enclosure portion 333 of the partition cover 33 and smaller than the inner diameter D2 of the enclosure portion 333 of the partition cover 33 (1/2D2≦D1<D2), and let The channel formed between the partition cover 33 and the main body 311 of the inner member 31 is relatively narrow, which makes it easier for the compressed air to form turbulent flow and cause collision.

Further, the bottom of the filter chamber 12 is gradually converged downward to form a cone shape, so the compressed gas is more likely to form turbulent flow after hitting the conical surface at the bottom of the filter chamber 12, which can also improve the collection effect of moisture, dust, impurities, etc. .

Further, the distance H2 between the top end and the bottom end of the chamber 312 of the inner member 31 is greater than or equal to 1 millimeter (mm) and less than or equal to 1/2 times the bottom surface of the cover top 331 of the partition cover 33 to the cover The distance H3 (1mm≦H2≦1/2H3) between the bottom ends of the enclosing portions 333 prevents the enclosing portion 333 from protruding out of the bottom 3113 of the main body 311 of the inner member 31 from being too long, causing the compressed air It is easier to form a turbulent flow under the cover surrounding portion 333, thereby improving the filtering effect, increasing the probability of the compressed air colliding, and further improving the filtering effect.

Further, the sum of the cross-sectional areas of the air inlet holes 314 of the inner member 31 is less than or equal to the cross-sectional area of the inner diameter of the air outlet pipe 313, so that the flow rate of the gas exiting the chamber 312 is greater than the flow rate entering the chamber 312, thereby forming The pressure difference further drives the flow of the compressed air and increases the efficiency of the turbulent flow generated before the air enters the chamber 312 .

Please refer to FIG. 6 and FIG. 7 , in the second preferred embodiment of the novel air filter device, the filter 30A includes an inner member 31A and a partition cover 33A.

The inner member 31A has a main body 311A, an accommodation chamber 312A, a plurality of air inlet holes 314A, an air outlet pipe 313A, and an extension portion 315A. The accommodation chamber 312A is formed in the main body 311A, The plurality of air inlet holes 314A are formed on the top 3111A of the main body 311A and communicate with the chamber 312A. The air outlet pipe 313A extends upward from the top 3111A of the main body 311A and is connected to the exhaust passage 24 of the cover 20 , the extension portion 315A extends downward from the bottom 3113A of the main body 311A, and a cavity 316A with an opening facing downward is formed in the extension portion 315A, and the cavity 316A is separated from the cavity 312A by the bottom 3113A of the main body 311A .

The partition cover 33A has a cover top 331A, a cover surrounding portion 333A, and a partition 335A. The partition 335A is provided in the cover surrounding portion 333A and is connected with the bottom end of the cover surrounding portion 333A and the inner member 31A. A space is formed between the bottom ends of the partition plates 335A, and a communication port 336A is formed in the center of the partition plate 335A to communicate with the space above and below the partition plate 335A.

Since the partition cover 33A has the partition plate 335A, after the compressed air enters the partition cover 33A from the bottom end of the partition cover 33A, it is easy to hit the partition plate 335A and form turbulent flow, and then enter the partition cover 336A through the communication port 336A. The space above the partition cover 33A.

Since the inner member 31A has the extending portion 315A, and a receiving groove 316A is formed in the extending portion 315A, after the compressed air enters the partition cover 33A through the communication port 336A, it is easy to first enter the receiving groove 316A, After collision in the container 316A, it flows upward from the outer circumference of the inner member 31, enters the container chamber 312A through the air inlet hole 314A of the inner member 31, and is discharged from the air outlet pipe 313A. The probability of collision, and improve the filtering effect.

Preferably, please refer to FIG. 7 , the partition plate 335A is gradually inclined downward toward the center and is tapered, and has a conical surface, and the angle α between the conical surface of the partition plate 335A and the horizontal plane is greater than or equal to 1 degree and less than or equal to 1 degree. 30 degrees (1°≦α≦30°), when the compressed air collides with the partition plate 335A, it is easier to form turbulent flow, and the tapered surface of the partition plate 335A can be used to make the space above the partition plate 335A. The filtered substances (moisture, impurities) are more likely to slide down and fall to the bottom of the filter chamber 12 .

Preferably, please refer to FIG. 7 , the distance H1 between the cover top 331A of the partition cover 33A and the top 3111A of the main body 311A of the inner member 31A is greater than or equal to 1 millimeter (mm) and less than or equal to 20 millimeters (mm) (1mm≦H1≦20mm); the distance H4 between the top 3111A of the main body 311A of the inner member 31A and the bottom end of the extension 315A is greater than or equal to 1 millimeter (mm) and less than or equal to 1 /2 times the distance H3 between the bottom surface of the cover top 331A of the partition cover 33A and the bottom end of the cover surrounding portion 333A (1mm≦H4≦1/2H3); the bottom surface of the partition plate 335A to the cover surrounding portion 333A The distance H5 between the bottom ends of the partition cover 33A is greater than or equal to 1/3 times the distance H3 from the bottom surface of the cover top 331A of the partition cover 33A to the bottom end of the cover enclosure 333A; The distance H6 from the bottom end to the top surface of the partition plate 335A of the partition cover 33A is greater than or equal to 1 millimeter (mm) and less than or equal to 10 millimeters (mm) (1mm≦H6≦10mm); The outer diameter D1 of the main body 311A is greater than or equal to 1/2 times the inner diameter D2 of the enclosure portion 333A of the partition cover 33A, and is smaller than the inner diameter D2 of the enclosure portion 333A of the partition cover 33A (1/2D2≦D1<D2 ), which makes it easier for compressed air to form turbulent flow and cause collisions.

Preferably, the aperture D3 of the communication port 336A of the partition plate 335A is greater than or equal to 3 millimeters (mm) and less than or equal to the inner diameter d of the air outlet pipe 313 (3mm≦D3≦d), so that the compressed air can enter the communication The port 336A is more likely to form a pressure difference sometimes, thereby driving the compressed air to flow.

Please refer to FIG. 8 , in the third preferred embodiment of the air filter device of the present invention, the filter 30B includes an inner member 31B, at least one connecting member 35B, and a partition cover 33B.

The inner member 31B has a main body 311B, a chamber 312B, a plurality of air inlet holes 314B, and an air outlet pipe 313B, the chamber 312B is formed in the main body 311B, and the plurality of air inlet holes 314B are formed on the top of the main body 311B 3111B, the air outlet pipe 313B is connected with the exhaust passage 24 of the cover body 20 .

The at least one connecting member 35B is serially connected to the bottom of the inner member 31B. The at least one connecting member 35B includes at least one main body 351B, at least one chamber 352B, a plurality of air inlet holes 354B, and a connecting pipe 353B. The chamber 352B is formed in the at least one main body 351B and communicates with the chamber 312B of the inner member 31B, and the plurality of air inlet holes 354B are formed in the at least one main body 351B and are connected to each other. The connecting pipe 353B is connected to the bottom 3113B of the inner member 31B through the at least one chamber 352B and the filter chamber 12 of the outer cylinder 10 .

The partition cover 33B is covered on the outer periphery of the inner member 31B and the connecting member 35B. The cover top 331B of the partition cover 33B is located between the cover 20 and the top 3111B of the main body 311B of the inner member 31B. The partition cover 33B The bottom end of the enclosure portion 333B protrudes out of the bottom end of the at least one connecting member 35B.

In the third preferred embodiment of the present invention, the filter 30B includes a plurality of connecting members 35B, the connecting members 35B are serially connected downward in sequence, and the chambers 352B of the connecting members 35B are connected to each other, And it communicates with the chamber 312B of the inner member 31B, and the connecting pipe 353B of the uppermost connecting member 35B is connected to the bottom of the inner member 31B. Each connecting member 35B includes at least one air inlet hole 354B, and each connecting member At least one air inlet hole 354B of 35B is formed on the top of the body 351B of each connecting member 35B.

The compressed air entering the partition cover 33B can selectively enter the chamber 312B of the inner member 31B through the air inlet hole 314B of the inner member 31B and then be discharged through the exhaust passage 24 , or be discharged through the at least one connecting member 35B After entering the chamber 352B of the at least one connecting member 35B, the air inlet hole 354B passes through the chamber 312B of the inner member 31B, and then is discharged from the exhaust passage 24 to increase the collision area of the compressed air.

Preferably, the sum of the cross-sectional areas of the air inlet holes 314B of the inner member 31B plus the cross-sectional area of the air inlet holes 354B of the at least one connecting member 35B is less than or equal to the inner diameter cross-sectional area of the air outlet pipe 313B.

Utilizing the above-mentioned technical features, the new air filter device has the following efficacy gains:

1. The new model utilizes the structure of the filters 30, 30A, 30B installed in the filter chamber 12 to increase the collision area when the compressed air flows, and makes it easy to form turbulence when the compressed air flows, and when the compressed air collides When the wall is installed, the moisture and impurities in the compressed air are separated from the compressed air.

2. The new air filter device has a simple structure, is easy to manufacture, and is easy to clean. It does not need to replace the filter material, and can reduce the maintenance cost.

10: outer cylinder

12: Filter room

121: Upper spacing

122: Outer ring channel

123: inner ring channel

124: Lower Spacing

15: exhaust channel

155: On-off valve

20: Cover

22: Air inlet channel

24: Exhaust channel

30: Filter

31: Internals

311: Ontology

3111: Top

3112: Circumference

3113: Bottom

312: Room

313: Outlet tube

314: air inlet

33: Separation cover

331: Hood Top

332: hood opening

333: hood surround

Claims (15)

An air filter device comprising: an outer cylinder, in which a filter chamber is formed; a cover, which is connected to the top of the outer cylinder and has an air inlet channel and an exhaust channel, the air inlet channel and the exhaust channel both extend downward and communicate with the filter chamber of the outer cylinder ; A filter, the filter is connected with the exhaust passage of the cover body, and is placed in the filter chamber of the outer cylinder, the filter includes: An inner member, the inner member is connected with the exhaust passage of the cover body, and includes a body, a chamber, a plurality of air inlet holes, and an air outlet pipe, the chamber is formed in the body, the plurality of air inlet holes The filter chamber is formed on the body and communicates with the chamber and the outer cylinder. The air outlet pipe extends upward from the top central position of the body to be connected with the exhaust passage of the cover, and communicates with the chamber and the inner member. the exhaust passage of the cover; and a partition cover, the partition cover is arranged on the outer periphery of the body of the inner member, the partition cover has a cover top, a cover surrounding part, and a cover opening, and the cover top is located between the cover body and the main body of the inner member Between the tops, an upper space is formed between the top of the cover and the cover body, and a space is formed between the top of the cover and the top of the body of the inner member, the cover enclosure extends downward from the top of the cover and surrounds the top of the cover. The outer circumference of the inner member, the bottom end of the cover surrounding portion protrudes from the bottom of the body of the inner member, an outer ring channel is formed between the cover surrounding portion and the outer cylinder, the cover surrounding portion and the body of the inner member An inner ring channel is formed therebetween, and the cover opening is formed at the bottom end of the partition cover. The air filtration device as claimed in claim 1, wherein the partition cover has a partition plate, and the partition plate is provided in the enclosure portion of the partition cover and between the bottom end of the enclosure portion and the bottom end of the inner member A distance is formed between them, and the center of the partition has a communication port that communicates with the space above and below the partition. The air filter device as claimed in claim 2, wherein the distance between the bottom surface of the partition plate and the bottom end of the cover enclosure is greater than or equal to 1/3 times the bottom surface of the cover top of the partition cover to the cover enclosure distance between the bottom ends. The air filter device as claimed in claim 2, wherein the partition plate is tapered downward gradually toward the center, and has a conical surface, and the angle between the conical surface of the partition plate and the horizontal plane is greater than or equal to 1 degree and less than or equal to 30 degrees. Spend. The air filter device according to claim 2, wherein the aperture of the communication port of the partition plate is greater than or equal to 3 mm and less than or equal to the inner diameter of the air outlet pipe. The air filter device of claim 1, wherein the inner member has an extension portion, the extension portion extends downward from the bottom of the main body, and a receiving groove is formed in the extension portion. The air filter device according to claim 6, wherein the distance between the top of the body of the inner member and the bottom end of the extension is greater than or equal to 1 mm and less than or equal to 1/2 times the top of the cover of the partition cover The distance from the bottom surface of the cover to the bottom end of the enclosure. The air filter device of claim 2, wherein the inner member has an extension portion, the extension portion extends downward from the bottom of the main body, and a receiving groove is formed in the extension portion, and the extension portion of the inner member has an extension portion. The distance from the bottom end to the top surface of the partition plate of the partition cover is greater than or equal to 1 mm and less than or equal to 10 mm. The air filter device according to any one of claims 1 to 8, wherein the plurality of air inlet holes are formed on the top of the body of the inner member. The air filter device according to claim 9, wherein the distance between the top of the cover of the partition cover and the top of the body of the inner member is greater than or equal to 1 mm and less than or equal to 20 mm. The air filter device according to any one of claims 1 to 8, wherein the distance between the top end and the bottom end of the chamber of the inner member is greater than or equal to 1 mm and less than or equal to 1/2 times the partition cover The distance from the bottom surface of the cover top to the bottom end of the cover enclosure. The air filter device according to any one of claims 1 to 8, wherein the inner diameter of the enclosure portion of the partition hood is less than or equal to 1/2 times the outer diameter of the body of the inner member is smaller than the enclosure enclosure of the partition hood the inner diameter of the part. The air filter device according to claim 9, wherein the sum of the cross-sectional areas of the air inlet holes is less than or equal to the cross-sectional area of the inner diameter of the air outlet pipe. The air filter device according to claim 1, wherein the filter includes at least one connecting member, the at least one connecting member is connected in series with the bottom of the inner member, and the at least one connecting member includes at least one main body, at least one connecting member, and at least one connecting member. A chamber, a plurality of air inlet holes, and a connecting pipe, the at least one chamber is formed in at least one of the at least one connecting member, and communicates with the chamber of the inner member, and the some inlets of the at least one connecting member are The air hole is formed on at least one body of the at least one connecting member and communicates with at least one accommodating chamber of the at least one connecting member and the filter chamber of the outer cylinder, and the connecting pipe is connected to the bottom of the inner member. The air filter device of claim 14, wherein the sum of the cross-sectional areas of the air inlet holes of the inner member plus the cross-sectional area of the air inlet holes of the at least one connecting member is less than or equal to the inner diameter cross-sectional area of the air outlet pipe.

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