TWM513266U - Air filter - Google Patents

Description

air filter

This creation is about an air purification device, especially for an air filter with good air tightness.

Generally, large industrial engines or fuel-powered vehicles have better fuel efficiency. Therefore, air filters are installed at the air inlet of the engine to filter sand and dust particles entrained in the air to improve combustion efficiency. And prevent wear on engine cylinders and internal parts.

In the conventional air cleaner, the air filter is provided with a filter material between an inner net body and an outer net body which are hollow cylindrical, and the filter material is continuously bent by the polymer fiber filter paper. Folded into a wavy shape, and the inner and outer net bodies are provided with a plurality of meshes, and a top cover and a bottom cover are respectively fixed on both ends to limit and block the filter material, and the top and bottom covers are respectively Made of hard plastic or metal.

Since the center of the top cover of the air cleaner is provided with a through hole, in use, a tube member for guiding air is externally inserted into the through hole of the top cover, and the filter is first passed through the outer tube. The mesh body initially filters out the impurities of the larger particles, and further removes fine dust particles in the air through the filter material. Finally, the clean air after being screened and removed is discharged through the pipe to achieve the purpose of filtering. .

Although the conventional air filter has the filtering effect of filtering out larger particles and filtering dust particles, the top and bottom covers of the air filter are made of hard plastic or metal materials. And must be completely bonded by hand or welded to the inside and outside The mesh body is fixed, so it is not only troublesome in assembly, but also the top and bottom covers must be quite dense after assembly with the inner and outer net bodies, otherwise the airtight effect after the assembly is reduced, and the relative components are The accuracy requirements must be high, which will also result in a significant increase in manufacturing and assembly costs.

The air filter of the present invention not only obtains better airtightness, but also is easy, fast and convenient to manufacture, and can save manufacturing costs.

Therefore, an air filter proposed by the present invention comprises a first end cap, a cylindrical filter unit and a second end cap. The filter unit has at least one support net body and a filter material attached to the support net body. The support net body is wound into a hollow cylindrical shape, so that the filter medium forms a content chamber in the center. The first end cover is an annular hollow body and is disposed at an upper end of the filter unit, and the first end cover is integrally formed with the support mesh layer and the filter material of the filter unit by using a material thereof, and the The first end cap is formed with a through hole that communicates with the contents of the filter medium. The second end cap is sealed at the lower end of the filter unit, so that the gas blocking the content chamber escapes from the lower end of the filter unit.

As described above, compared with the conventional air cleaner, the assembly is inconvenient and the airtight effect is poor. The air filter of the present invention has tight joints between the members, and not only has better airtightness, but also prevents The problem of the use of air leakage is simple and fast in manufacturing, saving manpower costs and relatively reducing manufacturing costs.

10‧‧‧First end cap

101‧‧‧through hole

11‧‧‧Outer ring

12‧‧‧ Inner ring

121‧‧‧ horizontal section

122‧‧‧ vertical section

123‧‧‧Active joint piece

124‧‧‧ vertical

1241‧‧‧ inner end

1242‧‧‧Outside

125‧‧‧Lip

20‧‧‧Filter unit

21‧‧‧Support net body

22‧‧‧ Filter media

220‧‧‧Content Room

221‧‧‧ inner circumference

222‧‧‧ fiber primary filter

223‧‧‧First steel mesh

224‧‧‧ oil mist separation layer

225‧‧‧Super high efficiency microglass layer

226‧‧‧Super high efficiency microglass layer

227‧‧‧Second steel mesh

228‧‧‧Fiber protective mesh

23‧‧‧Positioning layer

24‧‧‧Support net body

30‧‧‧Second end cap

31‧‧‧ outer ring

32‧‧‧ Inner ring

321‧‧‧ horizontal department

322‧‧‧Outer vertical

Vertical section in 323‧‧

324‧‧‧Outer convex

33‧‧‧Intermediate seal

40‧‧‧ Pipe fittings

Fig. 1 is a perspective view showing the appearance of a first preferred embodiment of the present air filter.

Fig. 2 is a cross-sectional view of the air filter.

Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1.

Figure 4 is a cross-sectional view showing a second preferred embodiment of the present air filter.

Fig. 5 is a partially enlarged cross-sectional view showing the movable engaging piece after being deformed.

Figure 6 is an exploded view of the first end cap.

Figure 7 is an exploded view of the second end cap.

Figure 8 is a cross-sectional view showing a third preferred embodiment of the present air filter.

Referring to Figures 1 and 2, a first preferred embodiment of the present air filter includes a first end cap 10, a cylindrical filter unit 20, and a second end cap 30.

With reference to the second and third embodiments, the filter unit 20 has at least one supporting net body 21, a filter material 22 attached to the supporting net body 21, and a positioning layer 23, and the supporting net body 21 is wound. The hollow cylinder is formed such that the filter medium 22 forms a content chamber 220 in the center. In this embodiment, the support mesh body 21 is made of stainless steel, and the filter material 22 is made of polymer fiber filter paper and continuously bent into a wave shape. The positioning layer 23 is spirally extended in the axial direction to be coated on an inner circumferential surface 221 of the filter material 22 to bond the filter material 22 in a loop shape to facilitate assembly and positioning during the mold insertion.

The first end cover 10 is an annular hollow body disposed at an upper end of the filter unit 20, and the first end cover 10 is integrally formed with the support mesh layer 21 and the filter material 22 of the filter unit 20 by using a material thereof. And the first end cover 10 is formed with a through hole 101 communicating with the content chamber 220 of the filter medium 22.

The second end cap 30 is sealed at the lower end of the filter unit 20, so that the gas blocking the content chamber 220 escapes from the lower end of the filter unit 20.

As for the air filter of the first embodiment, the positioning layer 23 is spirally applied to the inner circumferential surface 221 of the filter material, and the filter material 22 is wound into a cylindrical shape, and the support mesh The body 21 is simultaneously introduced into the mold, and the first end cover 10 and the second end cover 30 are respectively formed on the upper end and the lower end of the filter unit 20 by foam molding, and the manufacturing process can be completed quickly.

Referring to Figure 4, a second preferred embodiment of the present air filter package The utility model comprises a first end cover 10, a cylindrical filter unit 20 and a second end cover 30. The structure of the filter unit 20 is the same as that of the previous embodiment, and will not be described again. The difference between the second embodiment and the first embodiment lies in the first end cover 10 and the second end cover 30, which will be described in detail later.

Referring to Figures 4 and 6, the first end cap 10 is an annular hollow body. The first end cover 10 has an outer ring body 11 and an inner ring body 12 disposed on the inner side of the outer ring body 11. The outer ring body 11 is made of a foamed material. The inner ring body 12 is made of a rubber material and is integrally molded. The inner ring body 12 of the first end cover 10 has a horizontal section 121 and a vertical section 122 extending downward from the inner end of the horizontal section 121. The vertical section 122 is provided with a plurality of flexible activities on the inner circumference side. Engagement piece 123. The inner ring body 12 further has a vertical portion 124 located outside the horizontal portion 121. An inner end 1241 of the vertical portion 124 is deeply implanted inside the outer ring body 11, and one of the vertical portions 124 The outer end 1242 protrudes from the top of the outer ring body 11. In this embodiment, the inner ring body 12 of the first end cap 10 is made of a soft rubber material than the outer ring body 11. In addition, the lower end of the vertical section 122 of the inner ring body 12 is further formed with a thick lip 125 which is located below the movable engaging piece 124.

Referring to Figures 4 and 7, the second end cap 30 is disposed on the filter material 20 The upper end has an outer ring body 31, an inner ring body 32 disposed on the inner side of the outer ring body 31, and an intermediate seal connected between the outer ring body 31, the inner ring body 32 and the filter medium 20. The layer 33 is made of a foamed material, and the inner ring body 32 is made of a rubber material. The intermediate seal layer 33 of the second end cap 30 is combined with the outer ring body 31, the inner ring body 32 and the filter medium 20 by injection molding to block the second end cap 30 at the lower end of the filter unit 20.

In addition, the inner ring body 32 of the second end cover 30 has a coupling to the outer ring body. a horizontal portion 321 of the inner top edge of the 31, an outer vertical portion 322 extending outward from the end of the horizontal portion 321 and extending into the outer ring body 31, and extending outward from the other end of the horizontal portion 321 An inner vertical portion 323 in the intermediate sealing layer 33, and an outer convex portion 324 located outside the horizontal portion 321 The convex portion 324 is tapered from the horizontal portion 321 and protrudes outside the outer ring body 31 of the second end cover 30. In this embodiment, the inner ring body 32 of the second end cap 30 is made of a soft rubber material than the outer ring body 31.

As shown in FIG. 4, the air filter of the second embodiment is assembled. The positioning layer 23 is spirally applied to the inner peripheral surface 221 of the filter medium 22, and the filter medium 22 is wound into a cylindrical shape, and then introduced into the mold simultaneously with the support net body 21. Then, in the portion of the first end cap 10, the outer ring body 11 is integrally bonded to the upper end of the filter unit 20 by means of foam molding, so that the rubber of the outer ring body 11 is bonded to the support net body 21 and The inside of the filter medium 22 is firmly bonded to each other, and the inner ring body 12 is integrally joined to the inner side and the inner top edge of the outer ring body 11 by injection molding. Next, in the portion of the second end cover 30, the outer ring body 31 is integrally bonded to the lower end of the filter unit 20 by means of foam molding, so that the rubber of the outer ring body 31 is bonded to the first and second portions. The net bodies 21, 23 and the lower end of the filter medium 22 are firmly joined, and the inner ring body 32 is integrally bonded to the inner side and the inner bottom edge of the outer ring body 31 by injection molding, and the inner ring body is made The outer vertical portion 322 of the 32 extends inwardly and deeply implanted in the center of the outer ring body 31. Finally, the intermediate sealing layer 33 is integrally bonded to the inner side of the filter medium 22 by foam molding, and the outer ring body The inner side of the inner ring body 32 and the inner side of the inner ring body 32, and the inner sealing layer 33 is sandwiched by the inner vertical portion 322 of the inner ring body 32, and the outer ring body 31, the supporting net body 21 and the filter medium are allowed. 22. The inner ring body 32 and the intermediate seal layer 33 form a firm and strong bond, and are also blocked at the lower end of the filter unit 20 by the intermediate seal layer 33.

Referring to Figure 8, a third preferred embodiment of the present air filter package The utility model comprises a first end cover 10, a cylindrical filter unit 20 and a second end cover 30. The structures of the first end cover 10 and the second end cover 20 are the same as those of the first embodiment, and will not be further described. As for the third embodiment, the difference between the third embodiment and the first embodiment is that the filter unit 20 includes a support mesh body 21, a filter material 22 and a support mesh layer 24, and the two outer diameters are different. The covering of the net body 21, 24 causes the filter medium 22 to be constrained between the aforementioned supporting net bodies 21, 24, so that the filter material 22 has better support positioning on the inside and outside. In addition, the filter material 22 in this embodiment can use a multi-layer structure to make the filtering effect more diversified to improve the overall filtration efficiency. The filter material 22 comprises a fiber preliminary filter layer 222, a first steel mesh 223, an oil mist separation layer 224, two ultra-high efficiency microglass layers 225, 226, a second steel mesh 227 and a fiber protective mesh layer 228. . The supporting net body 21 and the supporting net body 24 are all diamond-shaped nets made of metal. The support net body 21, the first steel mesh 223, the second steel mesh 227 and the support net body 24 are all made of stainless steel to achieve temperature resistance and acid and alkali resistance. As for the third embodiment, the overall functions and effects are the same as those of the first and second embodiments.

Through the above description, compared with the conventional air filter, the inconvenience in assembly and the use problem of poor airtightness; the present air filter has the following effects:

1. The filter material 22 is supported by at least one supporting net body 21, and the positioning layer 23 is spirally coated on the inner peripheral surface 221 of the filter material 22 to be bonded and positioned, so that good support can be obtained before entering the mold. Then, the first and second end covers 10, 30 are respectively formed on the upper and lower ends of the filter unit 20, so that the members are tightly joined and have better airtightness.

In the fourth embodiment, since the first end cover 10 of the air filter is composed of the outer ring body 11 and the inner ring body 12, the outer ring body 11 is coupled to the filter unit 20 by a hard foam material. And further coupled to the upper ends of the first net body 21, the filter material 22 and the second net body 23, so as to form a stable and firm combination with the filter unit 20 by the strong structure of the outer ring body 11, and the second end cover 30 The rigid outer ring 31 also forms a firm bond with the filter unit 20, so the combined strength between the first end cap 10, the filter unit 20 and the second end cap 30 is relatively strong and strong.

3. The material of the inner ring body 12 of the first end cover 10 is softer than that of the outer ring body 11, as shown in FIG. 5, so a tube member 40 for guiding air outside is inserted into the through hole of the first end cover 10. In 101, the flexible movable engaging piece 123 and the lip portion 125 of the inner ring body 12 are deformed to be closely engaged with the pipe member 40, thereby optimizing the airtightness, and there is no problem of air leakage during use.

In addition, the inner ring body 32 of the second end cover 30 is made of a material smaller than the outer ring body. 31 soft, protruding to the outer convex portion 324 outside the outer ring body 31, the soft structure can be used as the foot pad of the second end cover 30, so that the second cover 30 is placed on an object, not directly Collision to obtain buffer protection.

5. Secondly, the first end cover 10 and the second end cover 30 are integrally combined with the filter unit 20 in an integrally formed manner. Therefore, the manufacturing is easy, fast, and convenient, and the manufacturing cost can be reduced.

The above descriptions are only a few preferred embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the new description contents, All should remain within the scope of this creation patent.

10‧‧‧First end cap

101‧‧‧through hole

20‧‧‧Filter unit

21‧‧‧Support net body

22‧‧‧ Filter media

220‧‧‧Content Room

221‧‧‧ inner circumference

23‧‧‧Positioning layer

30‧‧‧Second end cap

Claims (12)

An air filter comprising: a filter unit having at least one support net body and a filter material attached to the support net body, the support net body being wound into a hollow cylindrical shape, so that the filter medium is formed in the center a first end cover, which is an annular hollow body, and is disposed at an upper end of the filter unit, wherein the first end cover is integrally formed with the support mesh layer and the filter material of the filter unit by using a material thereof, and The first end cover is formed with a through hole communicating with the filter room; and a second end cover is sealed at the lower end of the filter unit, so that the gas blocking the content chamber is escaped from the lower end of the filter unit. The air filter of claim 1, wherein the first end cap has an outer ring body and an inner ring body disposed inside the outer ring body, the inner ring body having a horizontal section and a self a vertical section extending downwardly from an inner end of the horizontal section, wherein the inner circumference side of the vertical section is spaced apart by a plurality of flexible movable engaging pieces, and the inner ring body of the first end cover is softer than the outer ring body Made of rubber material. The air filter of claim 2, wherein the inner ring body of the first end cap further has a vertical portion located outside the horizontal section, and an inner end of the vertical portion is deeply embedded in the outer portion Inside the ring body, an outer end of the vertical portion protrudes from the top of the outer ring body. The air filter of claim 3, wherein the lower end of the vertical section of the inner end of the first end cap is further formed with a thick lip located below the movable engaging piece. The air filter of claim 1, wherein the second end cap has an outer ring body, an inner ring body disposed inside the outer ring body, and a joint in the outer ring body. An intermediate sealing layer between the ring body and the filter material, the intermediate sealing layer of the second end cover is combined with the outer ring body, the inner ring body and the filter material by injection molding, so that the second end cap is sealed at the The lower end of the filter material, and the inner ring body of the second end cap is made of a soft rubber material than the outer ring body. The air filter of claim 5, wherein the inner ring body of the second end cap has a horizontal portion coupled to an inner top edge of the outer ring body, and an outer portion extending from one end of the horizontal portion Stretch An outer vertical portion entering the outer ring body, an inner vertical portion extending outward from the other end of the horizontal portion and extending into the intermediate sealing layer, and an outer convex portion gradually converging outside the horizontal portion, The outer convex portion is protruded outside the outer ring body of the second end cover. The air filter of claim 1, wherein the support net of the filter unit is made of metal. The air filter of claim 1, wherein the filter unit has a plurality of support meshes having unequal outer diameters such that the filter media is constrained between the support mesh bodies. The air filter of claim 1, wherein the filter unit further comprises a positioning layer, the positioning layer is spirally coated on an inner circumferential surface of the filter material. The air filter of claim 1, wherein the filter unit comprises the support net body, a fiber preliminary filter layer, a first steel mesh, an oil mist separation layer, and two ultra high efficiency micro glass fibers. a layer, a second steel mesh, a fiber protective mesh layer and a supporting mesh body. The air filter of claim 2, wherein the outer ring body of the first end cover is made of a foamed material, and the inner ring body of the first end cover is made of a rubber and plastic material. The air filter according to claim 5, wherein the outer ring body of the second end cover is made of a foamed material, and the inner ring body of the second end cover is made of a single piece of rubber and plastic material.