GB1584517A - Disposable filter unit for liquid fuels - Google Patents

Disposable filter unit for liquid fuels Download PDF

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Publication number
GB1584517A
GB1584517A GB14638/78A GB1463878A GB1584517A GB 1584517 A GB1584517 A GB 1584517A GB 14638/78 A GB14638/78 A GB 14638/78A GB 1463878 A GB1463878 A GB 1463878A GB 1584517 A GB1584517 A GB 1584517A
Authority
GB
United Kingdom
Prior art keywords
filter unit
cover
unit according
unions
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.)
Expired
Application number
GB14638/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1584517A publication Critical patent/GB1584517A/en
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • B01D27/07—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 having a coaxial stream through the filtering element
    • 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
    • B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
    • 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
    • F02M37/24—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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtration Of Liquid (AREA)

Description

(54) DISPOSABLE FILTER UNIT FOR LIQUID FUELS (71) We, ROBERT BOSCH GmbH., a German company of Postfach 50, 7000 Stuttgart 1, Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention is concerned with disposable filter units for filtering liquid fuel.
Disposable filter units are known (for example, from German Offenlegungsschrift 2445454) which have a filter element in a housing which has a cover with a central threaded outlet tube which is screwed to an additional cover. Such a filter unit is relatively expensive in view of the need for a matching additional cover.
Oil filters are also known in which a cupshaped housing accommodates a paper filter element and has threaded inlet and outlet unions in its base, the filter having a releasable cover which is fixed to the housing by a central screw. Such a filter (as disclosed in German Offenlegungsschrift 1536902) is not disposable as a whole, but must be dismantled for disposal of the filter element and fitting of a new filter element.
According to the invention, there is provided a disposable filter unit for filtering liquid fuel, which comprises a wound filter element disposed in a cup-shaped housing, in which the housing has a cover non-releasably secured thereto, and, beneath the filter element. a water-collection space, the cover having therein a hollow inlet union adapted for connection to an inlet fuel line and a hollow outlet union adapted for connection to an outlet fuel line, the filter element, the inlet union and the outlet union being arranged for axial flow of liquid fuel through the filter element in use.
The filter unit is preferably provided with a fixing strip around the housing, whereby the filter unit can be readily fixed to a machine part.
In order that the invention may be more fully understood, there will now be described, with reference to the accompanying drawings, three exemplary embodiments of filter units according to the invention.
In the accompanying drawings: Figure 1 is a longitudinal section through a first embodiment of filter unit according to the invention; Figure 2 is a plan view of the filter unit shown in Figure 1; and Figures 3 and 4 are partial sections through further embodiments of filter units according to the invention.
Referring to Figure 1, there is shown a filter unit 10 in which a cover 12 is sealingly and non-releasably flanged to a cup-shaped housing 11. A perforated plate 14 having a central aperture therein, rests on a shoulder in the housing 11 and supports a filter element 15. The latter consists of a filter paper strip spirally wound about a central imperforate tube 16 and is fixed and sealed in the housing portion 11 by a ring of adhesive 17.
A water-collection space 18, which can be emptied by means of a discharge plug 19, is formed in the housing 11 beneath the perforated plate 14.
The cover 12 itself is formed as a flat platelike die casting in which are simply formed three bosses lying in a straight-line -as Figure 2 shows in more detail. The central boss is formed as a threaded outlet union 21 and the boss lying beside it, which is of the same size, is formed as a threaded inlet union 22, whilst the remaining boss accepts a ventilating screw 23. Thus, the threaded unions 21, 22 are parallel with one another. A flat sealing ring 24 is provided between the cover 12 and the central tube 16 to separate the dirty side and the clean side of the filter element from one another.
The housing 11 can be fixed by means of a -clamping strip 25 to a machine part (not shown). The clamping strip grips around the housing 11 by means of a loop section 26, which forms substantially three quarters of a circle, connected by parallel web sections 27, 28 to angled sections 29, 31. The web sections 27, 28 are clamped together by means of a bolt 32. The angled sections 29, 31 extend in one plane and each contain a hole 33. The filter unit 10 can easily be mounted on a part of a machine with the aid of the clamping strip 25, in an upright position to allow for separation of water.
In operation, fuel to be filtered passes through the inlet union 22, then axially through the filter element 15, through the perforations in the plate 14 into the space 18 and up through the centre of the tube 16 to the outlet union 21. The fuel lines can be connected directly to the threaded unions 21, 22 in the cover 12 so that an additional hous ing cover is not needed. In order to exchange the filter unit 10, the clamping bolt 32 is unscrewed, after removing the fuel lines, and the filter unit 10 is exchanged.
Figure 3 shows a portion of a second filter unit 40 which differs from that shown in Fig ure 1 in the following respects, wherein like references are used for like parts. The filter unit 40 has a cover 41 which consists of a flat steel plate 42 provided with three openings.
Tubular unions 42,43 are pressed into two of the openings until they engage the steel plate 42 by means of their flanged ends and are lying parallel to one another. The third open ing accepts the ventilation screw 23. In this instance, fuel lines formed as tubes can also be connected directly to the cover 12 with the aid of hose clips.
Figure 4 shows a portion of a third filter unit 50 which differs from that shown in Fig ure 3 by having a bored steel plate 51 into which simply formed tube unions 52, 53 are pushed and are non-releasably sealingly sol dered to the steel plate 51.
WHAT WE CLAIM IS: 1. A disposable filter unit for filtering liquid fuel, which comprises a wound filter element disposed in a cup-shaped housing, in which the housing has a cover non-releasably secured thereto. and, beneath the filter ele ment, a water-collection space, the cover having therein a hollow inlet union adapted for connection to an inlet fuel line and a hollow outlet union adapted for connection to an outlet fuel line. the filter element, the inlet union and the outlet union being arranged for axial flow of liquid fuel through the filter element in use.
2. A filter unit according to claim 1, which is provided with a fixing strip around the housing for fixing the filter unit to a machine part.
3. A filter unit according to claim 2, in which the fixing strip has a loop section and angle sections connected to the loop section by parallel web sections, the latter being bolted together.
4. A filter unit according to any of claims 1 to 3, in which the water-collection space is closed by a drain plug.
5. A filter unit according to any of claims 1 to 4, in which the top of the housing is provided with a ventilation screw.
6. A filter unit according to any of claims 1 to 5, in which the unions are in the form of tubes.
7. A filter unit according to claim 6, in which the cover is formed from sheet metal to which the unions are fixed.
8. A filter unit according to claim 7, in which the unions are fixed to the cover by soldering.
9. A filter unit according to any of claims 1 to 5, in which the unions are threaded for engagement with complementary threaded portions of the fuel lines.
10. A filter unit according to claim 9, in which the cover is a die casting having formed thereon upstanding annular bosses which form the threaded unions.
11. A disposable filter unit according to claim 1, substantially as described herein with reference to Figures 1 and 2 of the accompanying drawings.
12. A disposable filter unit according to claim 1, substantially as described herein with reference to Figure 3 or Figure 4 of the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (12)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    21, 22 are parallel with one another. A flat sealing ring 24 is provided between the cover 12 and the central tube 16 to separate the dirty side and the clean side of the filter element from one another.
    The housing 11 can be fixed by means of a -clamping strip 25 to a machine part (not shown). The clamping strip grips around the housing 11 by means of a loop section 26, which forms substantially three quarters of a circle, connected by parallel web sections 27,
    28 to angled sections 29, 31. The web sections 27, 28 are clamped together by means of a bolt 32. The angled sections 29, 31 extend in one plane and each contain a hole 33. The filter unit 10 can easily be mounted on a part of a machine with the aid of the clamping strip 25, in an upright position to allow for separation of water.
    In operation, fuel to be filtered passes through the inlet union 22, then axially through the filter element 15, through the perforations in the plate 14 into the space 18 and up through the centre of the tube 16 to the outlet union 21. The fuel lines can be connected directly to the threaded unions 21,
    22 in the cover 12 so that an additional hous ing cover is not needed. In order to exchange the filter unit 10, the clamping bolt 32 is unscrewed, after removing the fuel lines, and the filter unit 10 is exchanged.
    Figure 3 shows a portion of a second filter unit 40 which differs from that shown in Fig ure 1 in the following respects, wherein like references are used for like parts. The filter unit 40 has a cover 41 which consists of a flat steel plate 42 provided with three openings.
    Tubular unions 42,43 are pressed into two of the openings until they engage the steel plate
    42 by means of their flanged ends and are lying parallel to one another. The third open ing accepts the ventilation screw 23. In this instance, fuel lines formed as tubes can also be connected directly to the cover 12 with the aid of hose clips.
    Figure 4 shows a portion of a third filter unit 50 which differs from that shown in Fig ure 3 by having a bored steel plate 51 into which simply formed tube unions 52, 53 are pushed and are non-releasably sealingly sol dered to the steel plate 51.
    WHAT WE CLAIM IS: 1. A disposable filter unit for filtering liquid fuel, which comprises a wound filter element disposed in a cup-shaped housing, in which the housing has a cover non-releasably secured thereto. and, beneath the filter ele ment, a water-collection space, the cover having therein a hollow inlet union adapted for connection to an inlet fuel line and a hollow outlet union adapted for connection to an outlet fuel line. the filter element, the inlet union and the outlet union being arranged for axial flow of liquid fuel through the filter element in use.
  2. 2. A filter unit according to claim 1, which is provided with a fixing strip around the housing for fixing the filter unit to a machine part.
  3. 3. A filter unit according to claim 2, in which the fixing strip has a loop section and angle sections connected to the loop section by parallel web sections, the latter being bolted together.
  4. 4. A filter unit according to any of claims 1 to 3, in which the water-collection space is closed by a drain plug.
  5. 5. A filter unit according to any of claims 1 to 4, in which the top of the housing is provided with a ventilation screw.
  6. 6. A filter unit according to any of claims 1 to 5, in which the unions are in the form of tubes.
  7. 7. A filter unit according to claim 6, in which the cover is formed from sheet metal to which the unions are fixed.
  8. 8. A filter unit according to claim 7, in which the unions are fixed to the cover by soldering.
  9. 9. A filter unit according to any of claims 1 to 5, in which the unions are threaded for engagement with complementary threaded portions of the fuel lines.
  10. 10. A filter unit according to claim 9, in which the cover is a die casting having formed thereon upstanding annular bosses which form the threaded unions.
  11. 11. A disposable filter unit according to claim 1, substantially as described herein with reference to Figures 1 and 2 of the accompanying drawings.
  12. 12. A disposable filter unit according to claim 1, substantially as described herein with reference to Figure 3 or Figure 4 of the accompanying drawings.
GB14638/78A 1977-09-22 1978-04-13 Disposable filter unit for liquid fuels Expired GB1584517A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE777729318U DE7729318U1 (en) 1977-09-22 1977-09-22 LIQUID FILTER BOX

Publications (1)

Publication Number Publication Date
GB1584517A true GB1584517A (en) 1981-02-11

Family

ID=6682880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14638/78A Expired GB1584517A (en) 1977-09-22 1978-04-13 Disposable filter unit for liquid fuels

Country Status (2)

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DE (1) DE7729318U1 (en)
GB (1) GB1584517A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544021A1 (en) * 1983-04-08 1984-10-12 Bosch Gmbh Robert Diesel engine fuel filter housing with water drain
FR2548920A1 (en) * 1983-07-16 1985-01-18 Bosch Gmbh Robert Removing water collected in diesel fuel filter box
US4683055A (en) * 1984-06-22 1987-07-28 Robert Bosch Gmbh Filter for diesel fuel
EP0262596A2 (en) * 1986-10-02 1988-04-06 Dimitrios Siabanis Oil filter
EP0276579A1 (en) * 1987-01-30 1988-08-03 LUCAS INDUSTRIES public limited company Filter units

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544021A1 (en) * 1983-04-08 1984-10-12 Bosch Gmbh Robert Diesel engine fuel filter housing with water drain
FR2548920A1 (en) * 1983-07-16 1985-01-18 Bosch Gmbh Robert Removing water collected in diesel fuel filter box
US4683055A (en) * 1984-06-22 1987-07-28 Robert Bosch Gmbh Filter for diesel fuel
EP0166160B1 (en) * 1984-06-22 1988-12-14 Robert Bosch Gmbh Diesel fuel filter
EP0262596A2 (en) * 1986-10-02 1988-04-06 Dimitrios Siabanis Oil filter
EP0262596A3 (en) * 1986-10-02 1990-03-07 Dimitrios Siabanis Oil filter
EP0276579A1 (en) * 1987-01-30 1988-08-03 LUCAS INDUSTRIES public limited company Filter units

Also Published As

Publication number Publication date
DE7729318U1 (en) 1979-03-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee