WO2000045935A1 - Oil filter assembly for industrial applications - Google Patents
Oil filter assembly for industrial applications Download PDFInfo
- Publication number
- WO2000045935A1 WO2000045935A1 PCT/KR2000/000005 KR0000005W WO0045935A1 WO 2000045935 A1 WO2000045935 A1 WO 2000045935A1 KR 0000005 W KR0000005 W KR 0000005W WO 0045935 A1 WO0045935 A1 WO 0045935A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inner tube
- filter
- filter body
- oil
- housing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 25
- 230000001965 increasing effect Effects 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 239000002365 multiple layer Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- -1 moisture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000272470 Circus Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/08—Construction of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/012—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
- B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
- B01D29/072—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets ring shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
- B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
- B01D29/073—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets with wound filtering sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
Definitions
- the present invention relates generally to an oil filter assembly for industrial applications, and more particularly to a filter assembly which effectively removes oil contaminants such as moisture, solid particulate from the oil and prevents the bypassing of the oil without being filtered, thereby remarkably enhancing the efficiency of the filtration and the longevity of the oil filter assembly as well as readiness in handling the assembly for replacing it.
- the oil filter assembly 10 comprises an inner tube 12 and an outer tube 11, an upper filter body 13 and a lower filter body 15 strongly inserted between the inner tube 12 and the outer tube 11, and moisture-removing filter layers 14, 16 inserted between the upper filter body 13 and the lower filter body 15 and attached to the bottom surface of the lower filter body 15.
- the upper filter body 13 and the lower filter body 15 are formed of natural pulp material strip in a wound roll.
- the moisture-removing filter layers 14, 16 is made from woven or non-woven cloth, compressed cotton, etc. , particularly so as to remove moisture from the oil being filtered.
- the outer tube 11 and the inner tube 12 may be formed of hard substance such as a hardboard.
- the prior art oil filter assembly 10 having the above-mentioned construction is inserted into an housing 1, and then a cover 2 oil-tightly engages with the open end of the housing 1 using a fastening rod 3 with oil passageways 3a and 3b formed.
- the housing 1 is installed in the filtering apparatus or industrial applications and an inlet tube 100 and an outlet tube 200 from a filtering apparatus or industrial applications are oil-tightly connected to an inlet port 3c and an outlet port lb of the housing 1 respectively.
- the oil flows in from the inlet tube 100 to the upper space 5b through the oil passageways 3a and 3b and an annular passageway 5a between the inner tube 12 and the fastening rod 3 by the hydraulic pressure of a pressure source such as a pump(not shown).
- the oil in the upper space 5b flows down through the filter media along the upper filter body 13, the moisture-removing filter layers 14, the lower filter body 15 and the moisture-removing filter layers 16 in sequence, thus the contaminants contained in the oil are collected.
- the moisture passes through the moisture-removing filter layers 14, 16, the moisture is removed from the oil.
- the filtered oil is collected in the lower space 5c and flows out through the outlet tube 200.
- the oil filter assembly 10 of the above-mentioned type having the upper filter body 13 and the lower filter body 15 formed of natural pulp material sheet in a wound roll is very week in moisture in the side of its structure and characteristics, and so the above-mentioned problem is the more severe in case of this structure.
- the upper filter body 13 and the lower filter body 15 are wound similarly in density and the oil passes through the moisture-removing filter layer 14 from the upper filter body 13 toward the lower filter body 15 without staying at the moisture-removing filter layer 14 for a long time. Therefore, the removal of moisture is not sufficient, and the longevity of the oil filter assembly 10 and the oil are still more shortened.
- the present invention has been made to overcome the above described problems of the prior arts, and accordingly it is the principal object of the present invention to provide an oil filter assembly for industrial applications which effectively removes oil contaminants such as moisture, solid particulate from the oil and prevents the bypassing of the oil without being filtered and contaminating the inside wall surface of the housing, thereby remarkably enhancing the efficiency of the filtration and the longevity of the oil filter assembly as well as readiness in handling the assembly for replacing it. Also, it is a further object of the present invention to provide a method of manufacturing such a new and improved oil filter assembly.
- the present invention provides an oil filter assembly for industrial applications, which is inserted into the housing and comprises an inner tube, an outer tube, multiple layers of filter bodies inserted between the inner tube, and the outer tube for filtering foreign substance from the oil by passing through the filter body and at least one moisture-removing filter layer inserted between the multiple layers of the filter bodies, the improvement being characterized in that the filter bodies between which the moisture-removing filter layer is inserted, an upper filter body in the upper stream side of the moisture-removing filter layer being lower in density than a lower filter body in the lower stream side of the moisture-removing filter layer so as to stay at the moisture-removing filter layer for a longer time and sufficiently remove water or moisture from the oil.
- the present invention provides a method of manufacturing an oil filter assembly which comprises an outer tube, an upper filter body and a lower filter body inserted into the outer tube, a first inner tube and a second upper inner tube and a second lower inner tube into which the first inner tube is securely inserted and around each of which filter medium such as natural pulp material strip is wound for forming the upper filter body and the lower filter body of a roll type, respectively, said method comprising the steps of: winding filter medium of natural pulp strip onto the second upper inner tube and the second lower inner tube, respectively for forming the upper filter body and the lower filter body; and pseudo-assembling the upper filter body and the lower filter body by means of the first inner tube by securely inserting the second upper inner tube and the second lower inner tube into the upper portion and the lower portion of the first inner tube, respectively, for making multiple layers of the upper filter body and the lower filter body.
- FIG. 1 is a longitudinal sectional view of the prior art oil filter assembly
- FIG. 2 is a longitudinal sectional view of a housing assembly in which the oil filter assembly in FIG. 1 is mounted;
- FIG. 3a is an enlarged partial section of the oil filter assembly in FIG. 1 for explaining one problem in the filtration of moisture when passing a moisture removing filter layer;
- FIG. 3b is a plan view of the oil filter assembly in FIG. 1 for explaining the other problem of the short life;
- FIG. 4 is a longitudinal sectional view of an oil filter assembly according to one embodiment of the present invention.
- FIG. 5 is a longitudinal sectional view of a housing assembly in which the oil filter assembly in FIG. 4 is mounted;
- FIG. 6 is an enlarged partial section of the oil filter assembly in FIG. 4 for explaining one feature of the present invention in the filtration of moisture when passing a moisture removing filter layer; and FIGs. 7 through 11 show various steps in manufacturing the oil filter assembly of FIG. 4.
- FIG. 4 shows an oil filter assembly 20 according to one embodiment of the present invention.
- the oil filter assembly 20 comprises an outer tube 21, an first inner tube 22, a second upper inner tube 22a, a second lower inner tube 22b, a upper filter body 23, a lower filter body 25, a intermediate moisture-removing filter layer 24, and a lower moisture-removing filter layer 26.
- the upper filter body 23, the lower filter body 25, the intermediate moisture-removing filter layer 24, and the lower moisture-removing filter layer 26 comprise a multiple-layer filtration element made of filtration medium such natural pulp, etc.
- the upper filter body 23 is formed as a roll type by winding filtration medium of a strip structure such as a natural pulp strip around the second upper inner tube 22a in a relatively low density.
- the lower filter body 25 is formed as a roll type by winding filtration medium of a strip structure such as a natural pulp strip around the second lower inner tube 22b in a relatively high density. That is, on forming the lower filter body 25, the strip is wound under stronger tension than when the upper filter body 23 is formed, thereby the turns of winding being increased in the lower filter body 25.
- the intermediate moisture-removing filter layer 24 is inserted between the upper filter body 23 and the lower filter body 25 and the lower moisture-removing filter layer 26 is disposed to be in contact with the lower surface of the lower filter body 25.
- Those moisture-removing filter layers 24 and 26 are particularly made of filtration medium such as woven or non-woven cloth, compressed cotton, etc. , for removing moisture from the oil, and assembled by simply inserting the filtration medium of a circular sheet type with a hole into each lower end portion of the filtration-strip-wound second upper and lower tubes 22a and 22b as shown in FIG. 8.
- the upper filter body 23 has a circumferential protrusion portion 23a projected circu ferentially at the upper circumferential wall portion outside of the outer diameter of the upper filter body 23.
- the circumferential protrusion portion 23a is compressed by the inner wall of the housing 1 and ensures the complete sealing between the housing 1 and the oil filter assembly 20, as shown in FIG. 5. Therefore, the seeping of the unfiltered oil through a clearance 5d between the housing 1 and the upper filter body 23 is prevented.
- the circumferential protrusion portion 23a can be formed by inserting a pseudo-assembled upper and lower filter bodies into the outer tube 21 shorter than the whole height of the upper filter body 23 and the lower filter body 25, as after-mentioned in relation to FIG. 11.
- the present invention may comprise a strap 27 for easily handling and replacing the oil filter assembly, said strap 27 being securely inserted between the first inner tube 22, and the second upper inner tube 22a and the second lower inner tube 22b, and between the outer tube 21, and the upper filter body 23 and the lower filter body 25, as shown in FIG. 4.
- Said strap 27 may be covered by a strap cover 28 for preventing from becoming dangling and dirty.
- the strap 27 is inserted with a thin non-woven cloth 28a, thereby being fixed strongly. Also, the thin non-woven cloth 28a maintains the more complete sealing condition between the first inner tube 22, and the second upper inner tube 22a and the second lower inner tube 22b.
- the strap 27 may be inserted between the first inner tube 22, and the second upper inner tube 22a, and between the outer tube 21, and the upper filter body 23.
- One method of manufacturing the oil filter assembly in accordance with one embodiment of the present invention is described hereinafter with FIGs. 6 to 11.
- filter medium of natural pulp strip is wound around the second upper inner tube 22a and the second lower inner tube 22b, respectively for forming the upper filter body 23 and the lower filter body 25 as a roll type.
- the strip is wound under stronger tension than when the upper filter body 23 is formed, thereby the turns of winding and the density of the filtration medium being increased in the lower filter body 25.
- moisture-removing filter medium is inserted around the second upper inner tube 22a and the second lower inner tube 22b respectively to come into contact with each bottom surface of the upper filter body 23 and the lower filter body 25 right after the winding step, thereby the moisture-removing filter layers 24, 26 being formed.
- the handling strap 27 is inserted into the second upper inner tube 22a and the second lower inner tube 22b, and the first inner tube 22 is inserted through the non-woven cloth 28a into the second upper inner tube 22a and the second lower inner tube 22b in press-fit, thus the upper filter body 23 and the lower filter body 25 are pseudo-assembled by means of the first inner tube 22.
- the strap 27 may be preferably fixed to the outer periphery of the upper filter body 23 and the lower filter body 25 by means of a stapler 29.
- a strap cover 28 larger than the inner diameter of the outer tube 21 is disposed between the outer tube 21 and the pseudo-assembled upper and lower filter bodies as shown in FIG. 11.
- the pseudo-assembled upper and lower filter bodies are horizontally compressed by means of a lateral compression tool 31 such as multiple jaws and an omitted aerodynamic or hydraulic cylinder so as to reduce the outer diameter of the pseudo-assembled upper and lower filter bodies so that the pseudo-assembled upper and lower filter bodies can be inserted into the outer tube 21.
- the pseudo-assembled upper and lower filter bodies are inserted into the outer tube 21 with the strap cover 28 by vertically compressing the pseudo-assembled upper and lower filter bodies against a base 30 by means of a upper compression tool 32 and an omitted aerodynamic or hydraulic cylinder.
- the circumferential protrusion portion 23a is formed by inserting the pseudo-assembled upper and lower filter bodies into the outer tube 21 shorter than the whole height of the upper filter body 23 and the lower filter body 25. That is, the upper end portion of the upper filter body 23 above the upper end of the outer tube 21 is projected in the whole periphery.
- oil filter assembly 20 is simply manufactured and assembled according to one method of the present invention.
- the features of the above-mentioned oil filter assembly 20 are described hereinafter with FIGs. 5 to 6.
- the inner wall surface of the housing 1 is not contaminated by the less collected foreign particulates even, because the inner surface of the housing 1 is washed by the circumferential protrusion portion 23a and so basically the collected foreign particulates cannot flow in along the inner surface of the housing 1 when the oil filter assembly 20 is taken out from the housing 1.
- the oil filter assembly 20 comprises the strap 27 at the low cost structure, thereby the handling and replacing of the oil filter assembly being facilitated.
- oil filter assembly 20 of two filter body layers and its manufacturing method according to the present invention are disclosed by way of examples only, but not limit the present invention. It should be clear to one skilled in the art that the present solutions can be altered and applied without any limitation to the aforementioned embodiments of the present invention and within the scope of the present invention's spirit.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000597047A JP2002536150A (en) | 1999-02-03 | 2000-01-07 | Industrial filtration filter assembly and method of manufacturing the same |
AU30790/00A AU3079000A (en) | 1999-02-03 | 2000-01-07 | Oil filter assembly for industrial applications |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990003644A KR19990045877A (en) | 1999-02-03 | 1999-02-03 | Oil filter assembly for industrial use |
KR1999/3644 | 1999-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000045935A1 true WO2000045935A1 (en) | 2000-08-10 |
Family
ID=19573278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2000/000005 WO2000045935A1 (en) | 1999-02-03 | 2000-01-07 | Oil filter assembly for industrial applications |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2002536150A (en) |
KR (1) | KR19990045877A (en) |
CN (1) | CN1338968A (en) |
AU (1) | AU3079000A (en) |
WO (1) | WO2000045935A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020059470A (en) * | 2001-01-06 | 2002-07-13 | 송미정 | Oil cleaner |
KR100397693B1 (en) * | 2001-01-06 | 2003-09-13 | (주)케이오씨 | Housing assembly for a cooking oil cleaner and filter assembly therefor |
US11896923B2 (en) * | 2018-09-11 | 2024-02-13 | Volvo Truck Corporation | Air filter housing for an air filter arrangement in a vehicle |
CN113262553A (en) * | 2021-06-02 | 2021-08-17 | 李彬 | Pneumatic filtration and oil change integrated machine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5695312A (en) * | 1979-12-10 | 1981-08-01 | Mitsubishi Heavy Ind Ltd | Frame tightening method of filter press |
JPS5855010A (en) * | 1981-09-29 | 1983-04-01 | Nippon S R S:Kk | Filter for separation of oil and water |
JPS5949814A (en) * | 1982-09-16 | 1984-03-22 | Mitsubishi Heavy Ind Ltd | Filter |
JPH057710A (en) * | 1990-12-27 | 1993-01-19 | Nippon Rokaki Kk | Oil filter |
US5368746A (en) * | 1991-10-29 | 1994-11-29 | Edd D. Gryder | Environmentally beneficial bypass filter system for use with low pressure centrifugal refrigeration equipment |
-
1999
- 1999-02-03 KR KR1019990003644A patent/KR19990045877A/en not_active Application Discontinuation
-
2000
- 2000-01-07 WO PCT/KR2000/000005 patent/WO2000045935A1/en active Application Filing
- 2000-01-07 JP JP2000597047A patent/JP2002536150A/en active Pending
- 2000-01-07 CN CN00803423A patent/CN1338968A/en active Pending
- 2000-01-07 AU AU30790/00A patent/AU3079000A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5695312A (en) * | 1979-12-10 | 1981-08-01 | Mitsubishi Heavy Ind Ltd | Frame tightening method of filter press |
JPS5855010A (en) * | 1981-09-29 | 1983-04-01 | Nippon S R S:Kk | Filter for separation of oil and water |
JPS5949814A (en) * | 1982-09-16 | 1984-03-22 | Mitsubishi Heavy Ind Ltd | Filter |
JPH057710A (en) * | 1990-12-27 | 1993-01-19 | Nippon Rokaki Kk | Oil filter |
US5368746A (en) * | 1991-10-29 | 1994-11-29 | Edd D. Gryder | Environmentally beneficial bypass filter system for use with low pressure centrifugal refrigeration equipment |
Also Published As
Publication number | Publication date |
---|---|
AU3079000A (en) | 2000-08-25 |
JP2002536150A (en) | 2002-10-29 |
KR19990045877A (en) | 1999-06-25 |
CN1338968A (en) | 2002-03-06 |
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