CA2259173A1 - Filter - Google Patents
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- Publication number
- CA2259173A1 CA2259173A1 CA002259173A CA2259173A CA2259173A1 CA 2259173 A1 CA2259173 A1 CA 2259173A1 CA 002259173 A CA002259173 A CA 002259173A CA 2259173 A CA2259173 A CA 2259173A CA 2259173 A1 CA2259173 A1 CA 2259173A1
- Authority
- CA
- Canada
- Prior art keywords
- filter
- medium
- film hinges
- star
- foregoing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 238000007373 indentation Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
- B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
-
- 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
-
- 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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound 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
-
- 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
- B01D29/52—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 parallel connection
- B01D29/54—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 parallel connection arranged concentrically or coaxially
-
- 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
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/147—Bypass or safety valves
-
- 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
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/153—Anti-leakage or anti-return valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4084—Snap or Seeger ring connecting means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The description relates to a filter with at least one substantially rectangular filter medium (2) and at least one substantially rectangular supporting medium (3) applied as a support to the filter medium, where the connected media are folded in a star shape and sealed together at their contacting ends (9) and the faces of the filter are given a sealing cover.
Description
CA 022~9173 1998-12-21 WO 97/48470 PCT~P97/03076 Filter The invention relates to a filter in accordance with the preamble of claim 1. Such filters are known, for example from their use in the oil circuit of internal combustion engines. If it is desired to use such filters, which are composed of a metal supporting fabric and a synthetic sieve fabric with a metal inner tube and metal end plates, in modern internal combustion engines, it is disadvantageous that the filter is composed of various different types of materials. This presents problems, especially with regard to the later disposal of the filter.
Now the entire filter could be made of metal. This, however, is expensive to manufacture and would therefore make the filter expensive. On the other hand it would increase the total weight of the filter, which is disadvantageous with respect to the weight of the internal combustion engine.
It is thus the task of the invention to improve a filter of the kind referred to above such that a simple, cheap filter will result, which can be disposed of with little difficulty at the end of its useful life.
According to the invention, this task is solved by a filter with at least one substantially rectangular filter means and at least one substantially rectangular supporting medium which is applied to the filter means as supporting means,, the composite media being pleated in a star pattern and being joined sealingly at their contacting ends, the end faces of the filter having a sealing cover. By using a substantially rectangular filter means the possibility is created, for example, to unwind this filter medium from a continuous roll and insert it in segments into an injection molding tool so that the supporting medium can likewise be sprayed substantially at right angles onto the filter means. An advantage in this case is the simple configuration of the injection molding tool. If the spraying of the supporting medium were not to be performed until after the star-like pleating operation, a disproportionally more costly injection molding tool would be needed.
A further embodiment of the invention envisions that the filter medium is composed of paper, a nonwoven fleece, or a woven sieve fabric. Here, depending on the required fineness, the selection of the appropriate filter means is especially easy.
.... .
CA 022~9173 1998-12-21 W O 97/48470 PCT~P97/03076 Furthermore, it is advantageously possible for the sieve fabric to be made of metal or synthetic resin material. The material specified suitably will depend on the materials used for the supporting medium and the covers, for the purpose of satisfying the requirements for a pure type of material.
Another advantageous embodiment of the invention envisions making the covers of metal, synthetic resin material or paper. The choice of the material of the covers will be made ~lo~Liate to the materials used for the screen and also for the supporting medium .
It can furthermore be provided that the supporting medium has film hinges, these film hinges alternately permitting concave or convex folding relative to the star axis. As a result of this alternating arrangement of hinges, the star-like folding of the initially flat filter produced in an injection molding apparatus is made possible for the first time, since the folding takes place the constrictions of the film hinges.
In another advantageous embodiment of the invention, the supporting medium in the area of the film hinges, especially in the area of those film hinges which permit convex folding, has angular indentations which define the angle of the star folding. Such mitering provides for a regular appearance of the filter body, since such multi-layered structures otherwise tend to fold irregularly, which would lead to undefined contours of the filter. Another advantage in this case is that, for example the contacting ends can be definitely sealed.
In another advantageous embodiment, the ends which contact each other are glued or welded.
This results in secure sealing connections and consequently in a filter that is more secure in use. Furthermore, one can provide for the covers to be welded, glued or snap-fastened to the filter and supporting medium . Depending on the match of materials, these joints assure that an inexpensive and reliable filter is produced.
Advantageously, it can be provided that at least one of the covers will contain a filter by-pass valve. This assures that if a filter element clogs, the flow of oil within the internal combustion engine will not be interrupted.
These and other features of preferred embodiments of the invention are found not only in the claims but also in the description and the drawings, it being possible for the individual CA 022~9173 1998-12-21 WO 97/~8470 PCT/EP97/03076 features to be realized individually or together in the form of sub-combinations in the embodiment of the invention and in other fields, and may represent advantageous as well as independently patentable embodiments for which protection is hereby claimed.
Embodiments of the invention are shown in the drawings and are explained in further detail below.
The drawings show:
Figure 1 a section through a star-folded filter Figure 2 the detail y of Figure 1 Figure 3 a side view of the supporting medium Figure 4 the detail x of Figure 3 Figure 5 a plan view of the unfolded filter element Figure 6 a section through a filter housing with two star filter inserts.
In Figure 1 a star-folded filter is illustrated in section. As shown enlarged in detail y, it can be seen that the structure of the filter is made up essentially of the rectangular filter medium 2 and the supporting medium 3. As seen in Figure 2, in this special embodiment the filter medium 2 is applied externally in relation to the star axis, although it could also be applied inside of the supporting medium . The supporting medium 3 comprises, as shown in Figure 5, ribs disposed in the lengthwise and transverse directions, for example, which increase the inherent stability of the filter. The supporting medium has indentations, especially in the area of its film hinges 4, which permit convex folding relative to the star axis, which facilitate a defined folding. In Figure 3 it can be seen that the film hinges 4 alternate such that, to permit the star folding, one film hinge 4 permits convex folding 6 relative to the star axis, the following film hinge permits a concave folding 7. In Figure 4 the detail x from Figure 3 is shown enlarged. Here it becomes clear how the different film hinges 4 alternate. The angular CA 022~9173 1998-12-21 WO 97/48470 PCT~P97/03076 indentations 8 in the supporting medium 3, which are necessary for the achievement of the convex folding 6 are represented in this concrete embodiment with an angle of 60 degrees with respect to the unfolded, flat outstretched supporting medium 3. The supporting medium 3 injected onto the flat outstretched, substantially rectangular filter medium 2, for example in an injection molding process, is represented in Figure 5. Here a polyester fabric, for example, which in this embodiment comes from a supply roll, is introduced into an injection molding form. The filter medium 2 is severed from the roll either before or after the molding operation. This injection molding operation produces the l~in~ted filter, which directly after the molding operation is substantially rectangular and consequently flat. By means of the film hinges 4 disposed in alternation along the length of the filter, it is possible to fold the filter to a star shape, for example. As shown in Figure 1, the ends 9 of Figure 5 are glued or welded after the folding operation. To finish the filter, so-called covers 5 are applied to its end faces, which preferably are composed of the same material as the filter medium 2 and/or the supporting medium 3.
In one embodiment, an apparatus for the filtration of oil, like the one represented in Figure 6, is illustrated. This apparatus comprises a housing 10, a housing cover 11 which can be mounted and dismounted by means of closing device 22 in order to change the filter, and by means of a spring 16 urges the filter inserts l a and lb against the housing and seals the housing 10 by means of a gasket 20. This apparatus furthermore comprises an inlet 13 and an outlet 14. The embodiment illustrated in Figure 6 comprises two filters la and lb which also have different finenesses. The first filter 1 a with the coarser filter medium, which consequently lets larger particles pass, has in one of its covers 5 a filter bypass valve 12 which consists essentially of a valve plate 17 and a valve spring 18. The first filter is separated from the second filter lb located in the housing 10, which has a finer filter medium, by a cover 5 and an actuating valve 15 integrated therein. The actuating valve 15, which also has a valve plate 17 and a valve spring 18, shuts off the first filter in the case, for example, of a pressure in excess of 0.5 bar, for example, whereas the bypass valve in the first filter closes only in critical states of operation in order to prevent running dry. The clean oil side is separated from the raw oil side by the gasket 19 and the centering snap-fastening gasketed connection. The limit of separation of the first filter ranges from about 40 ~,lm. In an alternative embodiment it is possible to use only one filter insert in housing 10.
CA 022~9173 1998-12-21 Reference Numerals la first filter lb second filter 2 filter medium 3 support material 4 film hinge S cover 6 convex fold 7 concave fold 8 angular indentation 9 ends 1 0 housing 11 housing cover 12 filter bypass valve 1 3 inlet 14 outlet 15 actuating valve 1 6 spring 17 valve plate 18 valve spring 1 9 seal 20 cover seal 21 central snap tight connection 22 closure device
Now the entire filter could be made of metal. This, however, is expensive to manufacture and would therefore make the filter expensive. On the other hand it would increase the total weight of the filter, which is disadvantageous with respect to the weight of the internal combustion engine.
It is thus the task of the invention to improve a filter of the kind referred to above such that a simple, cheap filter will result, which can be disposed of with little difficulty at the end of its useful life.
According to the invention, this task is solved by a filter with at least one substantially rectangular filter means and at least one substantially rectangular supporting medium which is applied to the filter means as supporting means,, the composite media being pleated in a star pattern and being joined sealingly at their contacting ends, the end faces of the filter having a sealing cover. By using a substantially rectangular filter means the possibility is created, for example, to unwind this filter medium from a continuous roll and insert it in segments into an injection molding tool so that the supporting medium can likewise be sprayed substantially at right angles onto the filter means. An advantage in this case is the simple configuration of the injection molding tool. If the spraying of the supporting medium were not to be performed until after the star-like pleating operation, a disproportionally more costly injection molding tool would be needed.
A further embodiment of the invention envisions that the filter medium is composed of paper, a nonwoven fleece, or a woven sieve fabric. Here, depending on the required fineness, the selection of the appropriate filter means is especially easy.
.... .
CA 022~9173 1998-12-21 W O 97/48470 PCT~P97/03076 Furthermore, it is advantageously possible for the sieve fabric to be made of metal or synthetic resin material. The material specified suitably will depend on the materials used for the supporting medium and the covers, for the purpose of satisfying the requirements for a pure type of material.
Another advantageous embodiment of the invention envisions making the covers of metal, synthetic resin material or paper. The choice of the material of the covers will be made ~lo~Liate to the materials used for the screen and also for the supporting medium .
It can furthermore be provided that the supporting medium has film hinges, these film hinges alternately permitting concave or convex folding relative to the star axis. As a result of this alternating arrangement of hinges, the star-like folding of the initially flat filter produced in an injection molding apparatus is made possible for the first time, since the folding takes place the constrictions of the film hinges.
In another advantageous embodiment of the invention, the supporting medium in the area of the film hinges, especially in the area of those film hinges which permit convex folding, has angular indentations which define the angle of the star folding. Such mitering provides for a regular appearance of the filter body, since such multi-layered structures otherwise tend to fold irregularly, which would lead to undefined contours of the filter. Another advantage in this case is that, for example the contacting ends can be definitely sealed.
In another advantageous embodiment, the ends which contact each other are glued or welded.
This results in secure sealing connections and consequently in a filter that is more secure in use. Furthermore, one can provide for the covers to be welded, glued or snap-fastened to the filter and supporting medium . Depending on the match of materials, these joints assure that an inexpensive and reliable filter is produced.
Advantageously, it can be provided that at least one of the covers will contain a filter by-pass valve. This assures that if a filter element clogs, the flow of oil within the internal combustion engine will not be interrupted.
These and other features of preferred embodiments of the invention are found not only in the claims but also in the description and the drawings, it being possible for the individual CA 022~9173 1998-12-21 WO 97/~8470 PCT/EP97/03076 features to be realized individually or together in the form of sub-combinations in the embodiment of the invention and in other fields, and may represent advantageous as well as independently patentable embodiments for which protection is hereby claimed.
Embodiments of the invention are shown in the drawings and are explained in further detail below.
The drawings show:
Figure 1 a section through a star-folded filter Figure 2 the detail y of Figure 1 Figure 3 a side view of the supporting medium Figure 4 the detail x of Figure 3 Figure 5 a plan view of the unfolded filter element Figure 6 a section through a filter housing with two star filter inserts.
In Figure 1 a star-folded filter is illustrated in section. As shown enlarged in detail y, it can be seen that the structure of the filter is made up essentially of the rectangular filter medium 2 and the supporting medium 3. As seen in Figure 2, in this special embodiment the filter medium 2 is applied externally in relation to the star axis, although it could also be applied inside of the supporting medium . The supporting medium 3 comprises, as shown in Figure 5, ribs disposed in the lengthwise and transverse directions, for example, which increase the inherent stability of the filter. The supporting medium has indentations, especially in the area of its film hinges 4, which permit convex folding relative to the star axis, which facilitate a defined folding. In Figure 3 it can be seen that the film hinges 4 alternate such that, to permit the star folding, one film hinge 4 permits convex folding 6 relative to the star axis, the following film hinge permits a concave folding 7. In Figure 4 the detail x from Figure 3 is shown enlarged. Here it becomes clear how the different film hinges 4 alternate. The angular CA 022~9173 1998-12-21 WO 97/48470 PCT~P97/03076 indentations 8 in the supporting medium 3, which are necessary for the achievement of the convex folding 6 are represented in this concrete embodiment with an angle of 60 degrees with respect to the unfolded, flat outstretched supporting medium 3. The supporting medium 3 injected onto the flat outstretched, substantially rectangular filter medium 2, for example in an injection molding process, is represented in Figure 5. Here a polyester fabric, for example, which in this embodiment comes from a supply roll, is introduced into an injection molding form. The filter medium 2 is severed from the roll either before or after the molding operation. This injection molding operation produces the l~in~ted filter, which directly after the molding operation is substantially rectangular and consequently flat. By means of the film hinges 4 disposed in alternation along the length of the filter, it is possible to fold the filter to a star shape, for example. As shown in Figure 1, the ends 9 of Figure 5 are glued or welded after the folding operation. To finish the filter, so-called covers 5 are applied to its end faces, which preferably are composed of the same material as the filter medium 2 and/or the supporting medium 3.
In one embodiment, an apparatus for the filtration of oil, like the one represented in Figure 6, is illustrated. This apparatus comprises a housing 10, a housing cover 11 which can be mounted and dismounted by means of closing device 22 in order to change the filter, and by means of a spring 16 urges the filter inserts l a and lb against the housing and seals the housing 10 by means of a gasket 20. This apparatus furthermore comprises an inlet 13 and an outlet 14. The embodiment illustrated in Figure 6 comprises two filters la and lb which also have different finenesses. The first filter 1 a with the coarser filter medium, which consequently lets larger particles pass, has in one of its covers 5 a filter bypass valve 12 which consists essentially of a valve plate 17 and a valve spring 18. The first filter is separated from the second filter lb located in the housing 10, which has a finer filter medium, by a cover 5 and an actuating valve 15 integrated therein. The actuating valve 15, which also has a valve plate 17 and a valve spring 18, shuts off the first filter in the case, for example, of a pressure in excess of 0.5 bar, for example, whereas the bypass valve in the first filter closes only in critical states of operation in order to prevent running dry. The clean oil side is separated from the raw oil side by the gasket 19 and the centering snap-fastening gasketed connection. The limit of separation of the first filter ranges from about 40 ~,lm. In an alternative embodiment it is possible to use only one filter insert in housing 10.
CA 022~9173 1998-12-21 Reference Numerals la first filter lb second filter 2 filter medium 3 support material 4 film hinge S cover 6 convex fold 7 concave fold 8 angular indentation 9 ends 1 0 housing 11 housing cover 12 filter bypass valve 1 3 inlet 14 outlet 15 actuating valve 1 6 spring 17 valve plate 18 valve spring 1 9 seal 20 cover seal 21 central snap tight connection 22 closure device
Claims (9)
- Claim 1 Filter with at least one rectangular filter medium (2) and at least one rectangular support medium, which is applied to the filter medium (2) as a support means (3), wherein the composite media are folded in a star configuration and are sealinglyjoined at their ends (9) which are in contact along a filter fold; wherein the end faces of the filter are provided with a sealing cover (5), characterized in that the support means is provided with ribs arranged in the longitudinal and transverse directions.
6a Claims - 2. Filter, according to claim 1, characterized in that the filter medium consists of paper, nonwoven, or woven sieve fabric.
- 3. Filter, according to claim 2, characterized in that the woven sieve fabric consists of metal or plastic.
- 4. Filter, according to claim 1, characterized in that the covers (5) consist of metal, plastic or paper.
- 5. Filter, according to one or more of the foregoing claims, characterized in that the supporting medium has film hinges 4, these film hinges (4) alternately permitting a concave (7) and convex folding (6) with respect to the star axis.
- 6. Filter, according to claim 5, characterized in that the supporting medium has in the area of the film hinges, especially in the area of the film hinges (4) which permit convex folding (6), angular indentations (8) which define the angle of the star folding.
- 7. Filter, according to claim 1, characterized in that the contacting ends (9) are glued or welded.
- 8. Filter, according to one or more of the foregoing claims, characterized in that the covers (5) are welded, glued or snap-fastened to the filter medium and supporting medium.
- 9. Filter, according to one or more of the foregoing claims, characterized in that at least one cover (5) contains a filter bypass valve (12).
Claims Claim 10 Apparatus for filtering liquids, especially oil, comprising a housing (10) with a housing cover (11), an inlet (13) and an outlet (14), characterized in that the apparatus uses at least one filter according to one of the foregoing claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19624523.0 | 1996-06-20 | ||
| DE19624523A DE19624523A1 (en) | 1996-06-20 | 1996-06-20 | filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2259173A1 true CA2259173A1 (en) | 1997-12-24 |
Family
ID=7797411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002259173A Abandoned CA2259173A1 (en) | 1996-06-20 | 1997-06-12 | Filter |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JP2000512206A (en) |
| KR (1) | KR20000022027A (en) |
| BR (1) | BR9709846A (en) |
| CA (1) | CA2259173A1 (en) |
| CZ (1) | CZ422898A3 (en) |
| DE (1) | DE19624523A1 (en) |
| IL (1) | IL121086A0 (en) |
| WO (1) | WO1997048470A2 (en) |
| ZA (1) | ZA975280B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017053270A1 (en) * | 2015-09-24 | 2017-03-30 | Cummins Filtration Ip, Inc. | System and method for oil filtration in bypass mode |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19806929A1 (en) * | 1998-02-19 | 1999-08-26 | Knecht Filterwerke Gmbh | Seal, e.g. for combustion engine fuel filter |
| DE19813319A1 (en) * | 1998-03-26 | 1999-09-30 | Knecht Filterwerke Gmbh | Ring-shaped plastic end plate made of polyamide for a ring filter |
| DE29816629U1 (en) * | 1998-09-16 | 2000-02-03 | Hengst Walter Gmbh & Co Kg | Air filter |
| FR2787036B1 (en) * | 1998-12-14 | 2002-01-25 | Filtrauto | LIQUID FILTER PROVIDED WITH SEALING MEANS |
| US6488845B1 (en) * | 1999-08-12 | 2002-12-03 | Purolator Products Na, Inc. | Oil filter unit with quick-drain valve actuator |
| DE10001259A1 (en) * | 2000-01-14 | 2001-07-19 | Hydac Filtertechnik Gmbh | Filter includes two elements in casing, to retain particles of differing sizes and has passage connecting filter chambers |
| DE10026437A1 (en) * | 2000-05-29 | 2001-12-06 | Mann & Hummel Filter | Filter device |
| WO2002040133A1 (en) * | 2000-11-16 | 2002-05-23 | Filterwerk Mann+Hummel Gmbh | Filter element |
| DE10248907B4 (en) * | 2002-10-19 | 2013-08-22 | Mann + Hummel Gmbh | Filter device, in particular for liquid filtration in internal combustion engines |
| US6896803B2 (en) | 2003-03-28 | 2005-05-24 | Arvin Technologies, Inc. | Filter apparatus and associated method |
| US7441664B2 (en) * | 2003-05-23 | 2008-10-28 | Pur Water Purification Products Inc. | Water treatment devices and cartridges therefor |
| WO2005016488A1 (en) * | 2003-08-05 | 2005-02-24 | Filtertek S.A. | Filter, especially for fuels and similar |
| US8215492B2 (en) | 2003-09-18 | 2012-07-10 | Pur Water Purification Products, Inc. | Water treatment devices and cartridges therefor |
| US8123942B2 (en) | 2004-08-18 | 2012-02-28 | Assion Norbert M | Liquid filter assembly |
| US7708147B2 (en) | 2004-11-15 | 2010-05-04 | Purolator Filters Na Llc | Fluid filter assembly with notched case |
| WO2008115494A1 (en) * | 2007-03-22 | 2008-09-25 | Assion Norbert M | Liquid filter assembly |
| DE102015003101A1 (en) * | 2015-03-11 | 2016-09-15 | Mann + Hummel Gmbh | filter element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1726591U (en) * | 1955-04-23 | 1956-07-19 | Mann & Hummel Filter | FILTERS, IN PARTICULAR AIR FILTERS. |
| GB880812A (en) * | 1958-01-15 | 1961-10-25 | Gen Motors Ltd | Improvements in or relating to filters for fluids |
| US3543940A (en) * | 1968-08-14 | 1970-12-01 | Industrial Filter Pump Mfg Co | Filter construction |
| DE2034669A1 (en) * | 1970-07-13 | 1972-01-27 | Purolator Filter GmbH, 7110 Ohringen | Filter with a strip of filter paper folded in a zigzag shape |
| GB1429783A (en) * | 1972-03-11 | 1976-03-24 | Gen Motors Ltd | Fluid filter units |
| US3793692A (en) * | 1972-12-12 | 1974-02-26 | American Air Filter Co | Fluid treating filter |
| FR2426487A1 (en) * | 1978-05-22 | 1979-12-21 | Ouest Cie | FILTRATION CARTRIDGE |
| US4878930A (en) * | 1984-03-15 | 1989-11-07 | W. L. Gore & Associates, Inc. | Filter cartridge |
| EP0187358A3 (en) * | 1984-12-24 | 1987-03-18 | Kurashiki Boseki Kabushiki Kaisha | Filter element and its production |
| SE467471B (en) * | 1987-02-16 | 1992-07-20 | Stenhex Ab | DEVICE FOR FILTERING AND HEAT EXCHANGE |
| DE4039288C2 (en) * | 1990-12-08 | 1997-09-18 | Knecht Filterwerke Gmbh | Filter insert for gas filters in particular |
| DE9113531U1 (en) * | 1991-10-30 | 1991-12-19 | W.L. Gore & Associates Gmbh, 8011 Putzbrunn, De | |
| DE4201559A1 (en) * | 1992-01-22 | 1993-07-29 | Schwaebische Huettenwerke Gmbh | MATERIAL FOR FILTERS, IN PARTICULAR OIL, GASOLINE OR DIESEL FILTERS OF MOTOR VEHICLES |
| DE4242513C2 (en) * | 1992-12-16 | 1997-02-06 | Opel Adam Ag | Oil pan for an internal combustion engine |
| DE4310234C1 (en) * | 1993-03-30 | 1994-08-18 | Argo Feinmechanik | Backflow filter for liquids |
| DE4327368A1 (en) * | 1993-08-14 | 1995-02-16 | Minnesota Mining & Mfg | Filters for filtering a fluid flow |
| DE9403669U1 (en) * | 1994-03-07 | 1994-05-26 | Hengst Walter Gmbh & Co Kg | Filter insert, especially for oil or fuel filters |
-
1996
- 1996-06-20 DE DE19624523A patent/DE19624523A1/en not_active Withdrawn
-
1997
- 1997-06-12 CA CA002259173A patent/CA2259173A1/en not_active Abandoned
- 1997-06-12 WO PCT/EP1997/003076 patent/WO1997048470A2/en not_active Application Discontinuation
- 1997-06-12 BR BR9709846A patent/BR9709846A/en unknown
- 1997-06-12 JP JP10502222A patent/JP2000512206A/en active Pending
- 1997-06-12 CZ CZ984228A patent/CZ422898A3/en unknown
- 1997-06-12 KR KR1019980710425A patent/KR20000022027A/en not_active Application Discontinuation
- 1997-06-13 ZA ZA9705280A patent/ZA975280B/en unknown
- 1997-06-16 IL IL12108697A patent/IL121086A0/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017053270A1 (en) * | 2015-09-24 | 2017-03-30 | Cummins Filtration Ip, Inc. | System and method for oil filtration in bypass mode |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000022027A (en) | 2000-04-25 |
| BR9709846A (en) | 1999-08-10 |
| JP2000512206A (en) | 2000-09-19 |
| WO1997048470A3 (en) | 1998-03-12 |
| WO1997048470A2 (en) | 1997-12-24 |
| ZA975280B (en) | 1998-01-14 |
| DE19624523A1 (en) | 1998-01-02 |
| IL121086A0 (en) | 1997-11-20 |
| CZ422898A3 (en) | 1999-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |