KR900000750B1 - Triangular filter cartridge and apparatus - Google Patents

Abstract

A filter cartridge comprises a filter medium having both ends and a passage therebetween, a porous support member disposed in the passage and adapted to have a fluid passing therethrough, and an end cap supporting the filter medium and having an opening communicating with the passage. The permeable filter medium has a triangular shaped outer peripheral surface having three flat sides disposed at an arcuate angles to each other. The liquid to be filtrated passes through the filter medium, support member and passage for filtering contaminants from the fluid.

Description

Filter Cartridges for Fluid Filters

1 is a cross-sectional view of a conventional filtration device.

2 is a cross-sectional view showing an example of a filtration device according to the present invention.

3 is a partial longitudinal sectional view showing another example of the filtration device according to the present invention.

4 is a cross sectional view in the direction of the arrow from lines 4-4 of FIG.

5 is a partially cutaway perspective view of the filter cartridge according to the present invention.

FIG. 6 is a cross sectional view taken along the arrow direction from line 6-6 of FIG.

FIG. 7 is a partially cutaway enlarged sectional view showing the end of the filter cartridge of FIG.

8 is a cross-sectional view of an improved filter cartridge according to the present invention.

9 is a schematic cross-sectional view of a filter cartridge of another improved form according to the present invention.

* Explanation of symbols for main parts of the drawings

18: filter container 24: filter cartridge

26: flat side 34: euro

36 support 38, 40 end cap

50: through hole 52: gasket

54, 56, 58: flat side 70: filter cartridge assembly

72 filter cartridge 76, 78 container end

80: side plate 82: distribution hole

90: support plate

The present invention relates to a fluid filtration device, and more particularly, to a fluid filtration device including a cylindrical filtration vessel in which a plurality of triangular filter cartridges are densely packed to increase the filtration capacity.

Typically the filtration device consists of a cylindrical filtration vessel that houses a number of replaceable filter cartridges for filtering dirt from the fluid. Typical filter cartridges consist of a filter medium, a support for the filter medium, and an end cap that covers each end of the filter medium. The filter vessel is generally circular for ease of manufacture, and it is desirable for such a filter vessel to be able to install as many replaceable filter cartridges as possible therein to increase the filtration capacity of a given diameter vessel.

Recently, most filter cartridges have been rounded to match the shape of the support for the filter medium. The support is required to support the differential fluid pressure exerted transversely through the filter cartridge and the longitudinal pressure which appears in the step for inserting and securing the filter cartridge in the container. Typically these supports were in the form of perforated tubes and installed inside the filter medium. Since the supports are made mainly cylindrical in view of the above-mentioned resistance to transverse and longitudinal pressures and economics, it is common to make the filter cartridges also cylindrical. Thus, the number of filter cartridges enclosed in a filtration vessel of a specific diameter Was limited. In addition, when the number of filter cartridges was limited to represent the required filtration capacity, the diameter of the filtration vessel had to be determined by the amount and total diameter of the filter cartridges.

One of the drawbacks of the above-described conventional filtration apparatus is that the filtration capacity is not sufficient compared to the size of the filtration vessel.

For example, a typical filter vessel has a diameter of 16 inches and a typical filter cartridge has a diameter of 6 inches. Only four filter cartridges can be placed in the vessel described above. If only four filter cartridges are sufficient to represent the required filtration capacity, these devices will be unsatisfactory to the user.

Another drawback of the above-described conventional filtration apparatus is that the support is cylindrical and thin, so that the support for the collapse pressure is weak, and thus the filter body is easily broken when subjected to an external pressure exceeding the support. In order to eliminate these drawbacks, the support should be formed thickly. When the support is thickened, the length and thickness of the filter medium should be made thin. As a result, the capacity decreases.

Examining these various problems, it can be seen that there is a need for a filter cartridge of a type capable of increasing the filtration capacity by accommodating several filter cartridges in a filtration vessel having a specific diameter.

The present invention is to close the plurality of triangular filter cartridges in the filtration vessel, so that the above-mentioned defects of the conventional filtration device can be found to complete the present invention.

According to the present invention, a filter cartridge having a triangular outer circumferential surface having three planes is formed, and one of the three planes faces the inner circumferential surface of the container and is installed in the cylindrical container so that a constant distance is maintained between the inner circumferential surface. A cartridge having an outer circumferential area, such as a used filter cartridge, can be installed in a cylindrical container with a larger number of cartridges than a cylindrical filter cartridge. As a result, the filtration capacity of a filtration container having the same diameter as in the prior art can be improved. Moreover, the triangular cartridge is enclosed in a cylindrical container of a certain diameter so that the distribution of fluid through the filter cartridge is more uniform.

Another advantage with the present invention is that the support is produced in a triangular shape similar to the filter medium. This triangular shape allows the force to withstand the collapse pressure to be greater than the cylindrical support and as a result offset the greater external pressure. Moreover, since the triangular support can withstand high collapse pressure, the thickness of the triangular support can be made thinner than that of the cylindrical support, and as a result, the depth and thickness of the filter body can be made as large as possible, thereby improving the filtration capacity.

According to one embodiment of the present invention, the filtration device is a fluid filtration filter comprising a cylindrical inner circumferential surface, a filtration vessel having an inlet of a filtration fluid and an outlet of filtered fluid, and a plurality of replaceable filter cartridges installed in the vessel in a longitudinal direction. It consists of a cartridge assembly. Each filter cartridge includes a rectangular permeable filter medium having a flow path formed at a center portion between both ends and both ends, wherein one end of the flow path is opened to communicate with the outlet of the container. The support body is installed in the filter body, the end cap is in close contact with the outlet of the filter body, and the end cap is formed with a through hole for communicating the flow path with the outlet. Each permeable filter had a triangular outer circumferential surface of three planes, one of the three planes directed toward the inner circumferential surface of the vessel and to maintain a constant distance between the inner circumferential surfaces of the vessel. Porous support was installed in the filter body, and fluid was allowed to pass through the porous support. At one end of the filter body, an end cap having a flow path and a hole is installed. The permeable filter medium has a polygonal outer circumferential surface constituting at least three planes arranged at acute angles to each other. The fluid to be filtered passes through the filter body and the support and then flows out through the flow path into the aperture of the end cap.

It is an object of the present invention to provide a filtration device consisting of a filtration vessel and a plurality of triangular filter cartridges stored therein.

Another object of the present invention includes a cylindrical inner circumferential surface comprising a filtration vessel and a plurality of triangular filter cartridges, each cartridge being configured to maintain a constant distance from the inner circumferential surface of the container while one side is directed toward the inner circumferential surface of the container, so that the cylindrical filter is provided in a container of a constant diameter. It is to provide a filtration device that can have a larger number of cartridges than cylindrical cartridges while having the same outer circumference area.

It is yet another object of the present invention to provide a filtration device with increased filtration capacity at specified sizes.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing a conventional filtration device 10 consisting of a container 12 and four filter cartridges 14. In a typical filter device of this type, the container 12 has an inner diameter of 16 inches and a filter cartridge. 14 has a diameter of 6 inches. Since the filter cartridge 14 is cylindrical in this conventional filtration device 10, only four cylindrical cartridges 14 can be installed in the container 12, so that the filtration capacity is limited thereto.

2 shows a filter device according to the present invention, wherein the cylindrical filtration vessel 18 constituting the device 16 of the present invention has an inner space 20 and a cylindrical inner circumferential surface 22. The cylindrical container 18 has the same inner diameter of 16 inches as the conventional cartridge container and houses therein six filter cartridges 24 according to the present invention. The filter cartridge 24 is shown in FIG. Has an outer circumferential area substantially the same as that of the filter cartridge 14. The filter cartridge 24 has a triangular shape having a flat side face 26 on the inner circumferential surface side of the container so that a constant distance is maintained between the inner circumferential surface 22 of the container. As such, since the cartridge 24 is geometrically disposed in the container 18, more cartridges 24 may be densely arranged than in the prior art, thereby increasing the filtration capacity of the filtration device 16. Since the effective space of the filtration device 16 is determined by the diameter of the vessel 18, such a triangular cartridge 24 increases the filtration capacity for the vessel 18 of the same size.

5, 6 and 7 the triangular filter cartridge 24 comprises a permeable filter body 28 which is rectangular and has a flow path 34 extending between the two ends 30, 32. As shown in FIG. A support such as a perforated thin support 36 is provided in the flow path 34 to support the filter body 28. Both ends 30 and 32 of the filter body 28 are covered with triangular end caps 38 and 40, respectively, and the end caps 38 and 40 have a similar structure and end caps 38 ) Only.

The end cap 38 has a triangular outer flange 42 and a similar inner flange 44 with a plane 46 between the two flanges. The flanges 42 and 44 are separated by the combined thickness of the filter body 28 and the support body 36, and an adhesive layer 48 is applied to the inner plane 46 between the flanges 42 and 44 so that the filter body An end portion of the 28 and the support 36 was inserted and bonded between the two flanges 42 and 44 to prevent the fluid from flowing out therebetween. The end caps 38 and 40 have a triangular central through hole 50, in which a suitable gasket 52 is inserted and fixed. As described above, the filter body 28 has three flat sides 54, 56, 58 connected by curved portions 60, 62, 64, these side and curved portions having three sides. A square outer circumferential surface 66 is formed.

The filter cartridge 24 having the support 36 installed in the flow path 34 of the filter body 28 is designed for use in a filtration device in which fluid flows from the outer circumferential surface through the filter body 28 into the flow path 34. will be. In this type of fluid flow, the support body 36 is installed in the flow path 34, which not only prevents the collapse of the filter body 28 due to the differential pressure of the fluid applied to the filter body 28, but also the cartridge 24. When inserting into the container 18, the breakage of the filter medium due to the longitudinal pressure applied to the filter medium is prevented by a mechanical mechanism such as the use of a tool.

On the contrary, in the filtration device in which the fluid to be filtered flows into the flow path 34 and is then battered out of the filter cartridge 24 through the filter body 28, the support 36 is used to offset the differential fluid pressure of the fluid. Should be installed on the outer circumferential surface of the filter body (28).

The filter body 28 may be made of a suitable porous material, for example, a molding resin material having a sufficient density, and the support body 36 and the cap 38 and 40 may be made of a hard material having self-support. There is no need to use it, which has the advantage of reducing manufacturing costs. In addition, the filter body 28 can use any form, such as a thing with a wrinkle, a thing without a wrinkle, a solid depth type. The sides 54, 56 and 58 may be formed not convexly but convexly, thereby improving the strength of the filter body 28. According to the present invention, it can be selectively used depending on the type of fluid to be filtered, impurities, and other external factors.

The end caps 38 and 40 serve to assist the support 36 in order to impart structural strength to the filter body 28, which caps are of various types of materials such as epoxy, polyester, It can be made of various plastic materials such as polystyrene, or metal or fibrous materials. Gasket 52 may also be made of a material suitable for use with cartridge 24.

As shown in FIG. 2, the inner diameter R of the vessel 18 (figure 2) and the sides 54, 56, 58 are used to form the filter cartridge 24 to be held tightly in the vessel 18 as shown in FIG. For the curve L of the length L (Fig. 6) and the curved portions 60, 62 and 64, the radius Ro should maintain the following relationship. : 2pi R = 2pi Ro + 3L. By determining the filter cartridge 24 in accordance with the above-described relationship, the filter cartridges may be arranged in a container as shown in FIG. The formula is used to determine the length of the sides 54, 56, 58 of the triangular cartridge 24 relative to a standard round cartridge such as a 6 inch outer diameter round cartridge.

3 and 4, the filtration device 16 comprises a vessel 18 surrounding a filter cartridge assembly 70 comprising a plurality of filter cartridges 72, the cartridges 72 being Although square, the cross section is smaller than that of the filter cartridge 24, and thus the arrangement in the container 18 is also different from FIG. The filter cartridge 72 has the same shape as the filter cartridge 24 except for the size difference. The vessel 18 has convex ends 76, 78 and four support legs 74, with only two support legs described in the figure. The container 18 also includes a diaphragm 80 having a plurality of flow holes 82 fixed to the end 76 and communicating the discharge chamber 84 and the flow path 34. The discharge chamber 84 has an outlet 86 for discharging the filtered fluid and an inlet 88 for receiving the fluid to be filtered. The filter cartridge 72 is mounted in the container 18 and fixed inside the end 78 of the container by means of a gasket 52 provided in the corresponding flow hole 92 and an end cap 38 provided in the diaphragm 80. It is fixed vertically by the support top plate 90, the gasket 52 and the end cap 40 is attached to the upper end of the cartridge 52, and the support top plate 90 is overlaid so as to close the through hole 92 Lose. Another method was to secure the cartridge 72 in the container 18, one of which is described in Applicant's US Patent No. 4,320,005.

As illustrated in FIG. 4, the cartridge 72 may be manufactured so that it does not conform to the calculation for arranging the cartridge in the container as shown in FIG. 2, in which case the inner vertices of each cartridge 72 are different from the other cartridge 72. It will form a circular space that can be installed. As described in FIG. 2, even in this case, one of the flat side surfaces of the individual cartridges 72 faces the inner circumferential surface 22 of the container 18 and maintains a constant distance from the inner circumferential surface 22 to maximize the internal space. I could do it.

Referring to the effect of the filter device according to the present invention. The fluid to be filtered enters the flow path 34 through the porous support 36 introduced into the internal space 20 through the inlet 88 and then through the through hole 50 and the distribution hole 52 of the end cap. Enter the discharge chamber 84. The distribution hole 82 is formed in a triangular shape to fit the gasket 52. The filtered fluid is discharged through the discharge port 86 in the discharge chamber 84.

In the case of filtration in the opposite direction, the support 36 is attached to the outer circumferential surface of the cartridge 72. In this case, the fluid to be filtered is introduced into the discharge chamber 84 into the discharge port 86, and the flow path 34 is opened. After passing through the support body (36), it is passed through the support (36) and discharged out of the vessel at the inlet (88).

8 shows an improved version of the filter cartridge 24 or the cartridge 72. The filter body 94 has a cylindrical outer circumferential surface, but the flow path formed between both ends is circular. The flow path 96 is provided with a circular porous support 98 to support the filter body 94. The end cap of this improved cartridge includes a triangular outer flange 42 and a circular inner flange 100 and the gasket 102 inserted into the inner flange 100 is also circular. In addition, the filter body 94 and the support 98 are fixed between the flanges 42 and 100 to prevent the fluid from leaking therebetween. Moreover, in the filtration method in which the fluid to be filtered flows out of the filter body 94 in the flow path 96, the support body 36 uses a cartridge 93 provided on the outer circumferential surface of the filter body 94.

The present invention also relates to a filtration apparatus in which other types of polygonal filter cartridges are densely arranged in the container 18. One such filter cartridge has a cross-sectional shape similar to that shown in FIG. 9, which has at least three sides 106, 108, 110 acutely angled to one another. These cartridges are disposed in the container as shown in FIG. 2 with the uniaxial surface 110 facing the inner circumferential surface 22 of the container. All the above filter cartridges can be replaced. And cartridges according to the present invention may be of 5, 6, 8, 10 and other geometric shapes.

Claims (3)

A fluid filtration medium 28 having both ends and a flow path formed therebetween, a porous support 36 installed in the aforementioned flow path and allowing the fluid to pass therethrough, and a hole communicating with the flow path by supporting the filter body. In the filter cartridge for fluid filtration consisting of an end cap 38, a rounded bend 60 connecting the axial planes with the at least three flat sides 54, 56, 58 with permeable filters disposed at an acute angle to each other ( A filter cartridge having a triangular outer circumferential surface consisting of 62) (64) and configured to allow a fluid to be filtered to pass through the filter body, the support, and the flow path. In claim 1, a pair of flanges 42 having a similar shape to a triangle consisting of at least three flat sides with an acute angle of the flow path 34 and the support 36 and the end cap 38 being triangular And (44), wherein the filter body (28) and the end of the support (36) are inserted and fixed between the flanges described above. In claim 2, the support 36 is installed in the flow passage 4, the support and the flow passage are circular, and the end cap has the flange 42 in a triangular shape and the flange 100 in a circular shape, and the two flanges described above. Filter cartridge (28) and the end of the support (36) is inserted and fixed between the filter cartridge.

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