GB2356825A - A fuel filter with suspended filter element - Google Patents
A fuel filter with suspended filter element Download PDFInfo
- Publication number
- GB2356825A GB2356825A GB0026409A GB0026409A GB2356825A GB 2356825 A GB2356825 A GB 2356825A GB 0026409 A GB0026409 A GB 0026409A GB 0026409 A GB0026409 A GB 0026409A GB 2356825 A GB2356825 A GB 2356825A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- fuel
- filter medium
- chamber
- housing
- 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.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000717 retained effect Effects 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
- 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
-
- 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
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
- B01D2201/295—End caps with projections extending in a radial outward direction, e.g. for use as a guide, spacing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/34—Seals or gaskets for filtering elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Abstract
A fuel filter comprises a filter element 34 suspended within a filter chamber 32 in a filter housing 30. The filter element has an upper cap member 36 and lower cap member 38. The filter housing comprises an upper lid member 30b and lower base member 30a. The filter element upper cap member 36 includes an annular lip 42 which is received between the lid and base member of the housing and is arranged so that the filter element is suspended within the filter chamber. The filter element comprises a mesh having a plurality of perforations which prevent the passage of large particles carried by the fluid flow. An annular seal 44 located between the base and lid member provides a fluid and air tight seal between internal chambers 32, 46 and between internal chambers and external environment. The filter may be used to filter diesel in an internal combustion engine. Water carried by the fuel is collected within the base region 33 of the filter housing. The filter element being suspended within the filter chamber eliminates the need for a spring or other support means within the filter chamber.
Description
2356825 FUEL FILTER The invention relates to a filter for use in filtering
fuel, in particular, diesel, for an internal combustion engine.
It is usual to provide a filter in a fuel system for an internal combustion engine in order to remove contaminants from the fuel supplied to the engine.
The provision of a filter prevents contaminants blocking small passages provided in, for example, the fuel injectors of the fuel system. It therefore prevents the efficient operation of the engine from being impeded.
Figure 1 is a cross-sectional view of a conventional fuel filter comprising a housing 12 which defines a filter chamber 13 within which a filter medium is housed. The filter medium 10 takes the form of a mesh which has a plurality of perforations formed therein of sufficient size to permit fuel to flow therethrough, whilst preventing the passage of relatively large particles carried by the fuel flow. The housing 12 has an upper lid 14 which defines, in part, a chamber 15 into which fuel is delivered, in use. The upper lid 14 is provided with an aperture through which an outlet flow passage 16 extends. In use, fuel is delivered from the chamber 15 into the filter chamber 13 and flows through the filter medium 10, as indicated by the direction of the arrows. Filtered fuel is then discharged from the filter through the outlet passage 16. A seal member 18 is located between the upper lid 14 and the housing 12 to provide an air and fluid tight seal between the inside and the outside of the filter.
The filter medium 10 has upper and lower end caps, 19, 20 respectively, and is retained in position within the housing 12 by means of a compression spring (not shown) which is housed within the filter chamber 13, one end of the spring engaging the lower surface of the lower end cap 20 to urge the filter medium 10 upwardly against the seal member 22. The seal member 22 provides a seal between the clean and dirty sides of the filter. It is also known to provide alternative support means within the filter chamber 13, in place of the spring, to urge the filter medium 10 upwardly and to provide a seal at the seal member 22.
A disadvantage of this type of filter is that the seal member 22 may not provide a sufficient seal to prevent clean, filtered fuel which has passed through the filter medium 10 becoming contaminated by fuel within the chambers 13, 15 on the dirty side of the filter medium 10. In addition, fuel filters of this type can be costly to manufacture, in particular due to the requirement for a relatively large spring and the seal member 22.
It is an object of the present invention to provide a fuel filter which alleviates at least one of the disadvantages of conventional fuel filters.
According to the present invention, there is provided a fuel filter comprising a filter housing defining a filter chamber, a filter medium having a clean side and a dirty side, the filter medium being arranged such that, in use, fuel flows through the filter medium from the dirty side to the clean side, the filter medium having a cap member associated therewith, the cap member and the filter housing being arranged such that the filter medium is suspended within the filter chamber.
The invention provides the advantage that, as the filter medium is suspended within the filter chamber, the need for a spring or other support means within the filter chamber is removed. The number of filter components, and hence the cost of the filter, is therefore reduced.
Preferably, the filter medium has an upper cap member and a lower cap member. The filter housing may comprise a lid member and a base member, a part of the upper cap member being received between the lid member and the base member and being arranged such that the filter medium is suspended within the filter chamber. For example, the upper cap member may include an annular lip portion, the lip portion being received between the lid member and the base member.
The filter may further comprise a seal member arranged such that, in use, fuel on the dirty side of the filter medium is substantially isolated from filtered fuel on the clean side of the filter medium. The seal member may conveniently be located between the lid member and the base member of the filter housing, thereby providing a substantially fluid tight seal between a chamber defted, in part, by the lid member and a filter chamber defined, in part, by the base member.
As only a single seal member is required to form a substantially fluid and air tight seal (i) between the dirty side of the filter medium and the clean side of the filter medium and (ii) between the lid member and the base member of the filter housing, the number of filter components is further reduced. In addition, contamination of filtered fuel on the clean side of the filter medium by unfiltered fuel on the dirty side of the filter medium is less likely to occur.
The invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a side view of a fuel filter which is known in the prior art; and
Figure 2 is a side view of a fuel filter in accordance with an embodiment of the present invention.
Referring to Figure 2, a fuel filter comprises a filter housing, referred to generally as 30, which defines a filter chamber 32 within which a filter medium 34 is housed. The filter medium 34 takes the forin of a mesh having a plurality of perforations which are of a suitable dimension to permit fuel to flow therethrough, whilst preventing the passage of relatively large particles carried by the fuel flow. The filter housing 30 comprises a lower base member 30a and an upper lid member 30b, the lower base member 30a defining a base region 33 within which water carried by the fuel flow collects, in use. The base member 30a carries, at its uppermost end in the illustration shown, a screw thread formation which engages a corresponding screw thread formation provided on the innermost surface of a clamp member 31. The lid member 30b includes an annular projection 40, the annular projection 40 being clamped between the clamp member 31 and the base member 30a.
The filter medium 34 has upper and lower end cap members 36, 38, the upper cap member 36 including an annular lip 42 which is received between the lid member 30b and the base member 30a of the filter housing 30 and is held in place by means of the clamp member 3 1. The lid member 30b and the upper cap member 36 together define a chamber 46 through which filtered fuel, which has passed through the filter medium 34, flows to an outlet passage 50. An annular seal member 44 is located between the base member 30a and the lid member 30b, the seal member 44 serving to provide a substantially fluid and air tight seal between the filter chamber 32 and the chamber 46, and between the chambers 32,46 and the external enviromnent.
The filter housing 30 therefore forms a substantially sealed unit.
In use, fuel is delivered to the filter through an inlet passage 48 which communicates with the filter chamber 32 through an aperture provided in the base member 30a of the filter housing 30. Fuel is able to flow through the perforations in the filter medium 34 whilst particles carried by the fuel flow are trapped by the filter medium 34. Filtered fuel flowing through the filter medium 34 is discharged from the filter through the outlet passage 50.
Additionally, water carried by fuel flowing through the inlet passage 48 into the filter chamber 32 is collected within the base region 33 defined by the base member 30a of the filter housing 30.
As the upper cap member 36 of the filter medium 34 is held between the lid member 30b and the base member 30a of the filter housing 30, the filter medium 34 is suspended within the filter chamber 32. Thus, the need for a spring, or other support means, within the base member 30a of the filter housing 30 is removed. As the number of filter parts is reduced, the cost of the filter is therefore also reduced.
It will be appreciated that, in addition to providing a substantially fluid and air tight seal between the chamber 46 and the filter chamber 32, the seal member 44 also provides a seal between the dirty side and the clean side of the filter medium 34. The seal member 44 therefore provides two functions and, thus, the need for an additional seal member is removed. The upper cap member 36 of the filter medium 34 also provides a means of separating the clean side and the dirty side of the filter medium 34. Contamination of clean, filtered fuel which has passed through the filter medium 34 is therefore less likely to occur due to the arrangement of the upper cap member 36 and the seal member 44.
It will be appreciated that, although the filter hereinbefore described is intended for use in filtering diesel in an internal combustion engine, the filter may also be used to filter other types of fluid.
Claims (7)
1. A fuel filter comprising a filter housing defining a filter chamber, a filter medium having a clean side and a dirty side, the filter medium being arranged such that, in use, fuel flows through the filter medium from the dirty side to the clean side, the filter medium having a cap member associated therewith, the cap member and the filter housing being arranged such that the filter medium is suspended within the filter chamber.
2. A filter as claimed in Claim 1, wherein the filter medium has an upper cap member and a lower cap member.
3. A filter as claimed in Claim 2, wherein the filter housing comprises a lid member and a base member, a part of the upper cap member being received between the lid member and the base member and being arranged such that the filter medium is suspended within the filter chamber.
4. A filter as claimed in Claim 3, wherein the upper cap member includes an annular lip portion, the lip portion being received between the lid member and the base member.
5. A filter as claimed in any of Claims 1 to 4, further comprising a seal member arranged such that, in use, fuel on the dirty side of the filter medium is substantially isolated from filtered fuel on the clean side of the filter medium.
6. A filter as claimed in Claim 5, wherein the seal member is located between the lid member and the base member of the filter housing, thereby providing a substantially fluid tight seal between a chamber defined, in part, by the lid member and a filter chamber defined, in part, by the base member.
7. A filter substantially as described herein with reference to the accompanying Figure 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9925754.5A GB9925754D0 (en) | 1999-10-29 | 1999-10-29 | Fuel filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0026409D0 GB0026409D0 (en) | 2000-12-13 |
| GB2356825A true GB2356825A (en) | 2001-06-06 |
Family
ID=10863693
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9925754.5A Ceased GB9925754D0 (en) | 1999-10-29 | 1999-10-29 | Fuel filter |
| GB0026409A Withdrawn GB2356825A (en) | 1999-10-29 | 2000-10-27 | A fuel filter with suspended filter element |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9925754.5A Ceased GB9925754D0 (en) | 1999-10-29 | 1999-10-29 | Fuel filter |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9925754D0 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373457A (en) * | 2001-03-19 | 2002-09-25 | Dana Corp | A filter with releasable housing portions |
| WO2004033067A2 (en) * | 2002-10-08 | 2004-04-22 | Donaldson Company, Inc. | Fluid filter and methods for assembling the said filter |
| DE202015102903U1 (en) * | 2015-06-04 | 2016-09-06 | Georg Schünemann GmbH | Filter device for filtering a fluid |
| CN107288784A (en) * | 2016-04-11 | 2017-10-24 | 曼·胡默尔有限公司 | Filter mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB815349A (en) * | 1957-03-08 | 1959-06-24 | Air Maze Corp | Oil filter |
| US3487932A (en) * | 1967-02-24 | 1970-01-06 | Aero Flow Dynamics Inc | Filter element fairing means |
| US3675776A (en) * | 1970-12-16 | 1972-07-11 | Philip Campo | Filter device |
| GB2049464A (en) * | 1979-05-29 | 1980-12-31 | Filter Specialists | Fluid filter housing and filter bag seal |
| US5783078A (en) * | 1996-10-12 | 1998-07-21 | Dana Corporation | Fuel/water separator filter without flow diverters and method of making same |
-
1999
- 1999-10-29 GB GBGB9925754.5A patent/GB9925754D0/en not_active Ceased
-
2000
- 2000-10-27 GB GB0026409A patent/GB2356825A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB815349A (en) * | 1957-03-08 | 1959-06-24 | Air Maze Corp | Oil filter |
| US3487932A (en) * | 1967-02-24 | 1970-01-06 | Aero Flow Dynamics Inc | Filter element fairing means |
| US3675776A (en) * | 1970-12-16 | 1972-07-11 | Philip Campo | Filter device |
| GB2049464A (en) * | 1979-05-29 | 1980-12-31 | Filter Specialists | Fluid filter housing and filter bag seal |
| US5783078A (en) * | 1996-10-12 | 1998-07-21 | Dana Corporation | Fuel/water separator filter without flow diverters and method of making same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373457A (en) * | 2001-03-19 | 2002-09-25 | Dana Corp | A filter with releasable housing portions |
| WO2004033067A2 (en) * | 2002-10-08 | 2004-04-22 | Donaldson Company, Inc. | Fluid filter and methods for assembling the said filter |
| WO2004033067A3 (en) * | 2002-10-08 | 2004-05-13 | Donaldson Co Inc | Fluid filter and methods for assembling the said filter |
| US7556155B2 (en) | 2002-10-08 | 2009-07-07 | Donaldson Company, Inc. | Fluid filter and methods |
| CN1711123B (en) * | 2002-10-08 | 2012-04-25 | 唐纳森公司 | Fluid filter and methods for assembling the said filter |
| DE202015102903U1 (en) * | 2015-06-04 | 2016-09-06 | Georg Schünemann GmbH | Filter device for filtering a fluid |
| CN107288784A (en) * | 2016-04-11 | 2017-10-24 | 曼·胡默尔有限公司 | Filter mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9925754D0 (en) | 1999-12-29 |
| GB0026409D0 (en) | 2000-12-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |