Classifications

• • 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
  • 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
  • B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
• • 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
  • B01D36/006—Purge 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
  • F02M37/24—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
  • F02M37/26—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 with water detection 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
  • F02M37/42—Installation or removal of filters
• • 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
  • F02M37/44—Filters structurally associated with pumps
• • 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
  • F02M37/48—Filters structurally associated with fuel valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2201/00—Details relating to filtering apparatus
  • B01D2201/30—Filter housing constructions
  • B01D2201/309—Housings with transparent parts

Definitions

• the present invention relates to a fuel filter, in particular an internal combustion engine, having a housing, arranged therein, to be filtered by a fuel filter element and with a lower lying in operation plenum for receiving separated from the fuel water, the plenum by a with the remaining housing is tightly connected, transparent pot is formed.
• a fuel filter of the type mentioned is known from DE 299 15 146 U 1.
• the pot forming the plenum is a downwardly extending extension of the housing made of sheet metal and is fixed by its upper edge in the housing by an adhesive bond.
• the pot can be held in the housing by a positive connection.
• the pot is made of a transparent plastic, to see the level of water accumulated in the pot from the outside.
• the pot can be formed on the outside with integral reinforcing ribs.
• Another relevant fuel filter is known from DE 199 43 240 A1, in which the pot forming the plenum is screwed from below with the interposition of a sealing ring in the housing.
• the pot also consists of a transparent plastic.
• the fuel filter has a housing and a filter element disposed within the housing.
• the housing has an open top end and a substantially closed bottom end.
• the housing is made of an opaque plastic, except for a window in the housing, which consists of a substantially transparent plastic.
• the essentially transparent plastic of the window is insert-molded with the opaque plastic.
• the filter element is disposed in the housing for filtering fuel.
• the housing defines a water collection space below the filter element, with the window of the housing positioned to overlap at least a portion of the water collection space to permit water level monitoring.
• the object is to provide a fuel filter of the type mentioned above, which avoids the disadvantages mentioned above and in which in particular a permanent compressive strength and tightness of the collecting space for separated water forming pot is ensured, at the same time the water level in Collection space from the outside should remain visually well recognizable.
• a fuel filter of the type mentioned which is characterized in that the housing surrounds the outside of the pot form fit and that the housing has at least one show opening in its area surrounding the pot.
• the housing including its pot enclosing area, does not have to be transparent, it can easily be made from a suitably stable material.
• the pot has to absorb only lower forces, which makes it possible to use a less stable, transparent material without disadvantageous consequences and without risks.
• the housing on the one hand and the pot on the other hand can be initially produced as separate parts, which keeps the production simple.
• the show opening is appropriately designed in shape and size, on the one hand ensures good visibility of the water level in the pot and on the other hand does not affect a sufficient support of the pot against the pressure forces occurring.
• the housing has in its area surrounding the pot a plurality of display openings distributed in the circumferential direction. This ensures that the level of the water in the pot is visible from different directions, so that it does not matter in which twisting position the housing is arranged relative to the viewing direction of an operator waiting for the fuel filter.
• the / each display opening preferably has a round or an oblong-oval or elliptical, running in the longitudinal direction of the housing outline shape.
• Such a shape of the inspection opening (s) prevents tearing of the pot in the area of mechanical stress peaks that would occur at sharp corners and angles. Even angular outline of the show opening (s) with sufficient for avoiding voltage spikes rounded corners are conceivable and suitable.
• the housing is preferably made of a fiber-reinforced opaque plastic and the pot preferably made of an unreinforced transparent plastic.
• the material of the housing absorbs the forces caused by the pressure of the fuel and the material of the pot ensures the visibility of the water level in the water collection chamber.
• Modern fuel filters use an interchangeable filter element which requires that the fuel filter be opened for the purpose of replacing the filter element.
• the housing is designed as a cup-shaped lid which can be attached to a filter head with a fuel inlet connection and a fuel outlet connection, preferably a screw cap.
• the filter head is firmly mounted, for example, on an internal combustion engine or in an engine compartment of a motor vehicle and connected to the necessary lines. For the maintenance of the fuel filter then only the housing must be unscrewed from the filter head and screwed after changing the filter element again.
• the pot is expediently sealingly inserted into the housing with the interposition of a seal arranged in the region of the upper, open end of the pot.
• the pot can be inserted into the housing and adhesively bonded or welded at its upper, open end to the housing.
• the welding may for example be a Reibversch spaung, since expedient the housing and the pot in the region of their junction are circular.
• the pot has at its open end a radially outwardly projecting collar and that the housing has on its inner periphery a step which in the assembled state of the pot and housing with the collar by means of the seal or an adhesive layer or a weld seam sealingly cooperates.
• the pot To be able to remove in the pot accumulated, separated from the fuel water without disassembly of the fuel filter, expediently the pot, starting from its lowest in operation, a leading out through the housing water drainage channel with a drain valve.
• the drain valve is preferably designed as a screw valve with a hose connection for a water discharge hose.
• the water collected in the pot during a filter drainage can be safely and safely discharged into a collecting container without the risk of contamination of the environment.
• the invention still provides that the filter element has on its side facing the pot feet, which are supported in the installed state on a filter element facing the edge of the pot.
• the pot is used for an exact axial positioning of the filter element in the housing, so that separate positioning means can be omitted for this purpose.
• the gap space remaining between the feet allows a passage of water separated from the fuel at the filter element into the collecting space within the pot.
• FIG. 2 shows the fuel filter from FIG. 1 in a longitudinal section
• Figure 3 shows the housing of the fuel filter in an exploded view of his
• FIG. 1 of the drawing shows a fuel filter 1 in a side view.
• the upper part of the fuel filter 1 forms a filter head 10 which is formed with a Kraftstoffzu- flow connection 1 1 and a fuel drain port 12 to connect corresponding fuel lines.
• the filter head 10 may have elements not shown here for mounting on, for example, the engine block of an associated internal combustion engine.
• a fuel hand pump 13 is arranged in a conventional manner, used is when an associated fuel system must be filled with fuel, for example, after a fueling of the tank of an associated motor vehicle.
• a housing 2 is connected to the filter head 10, screwed here.
• the housing 2 is cup-shaped in its basic form and open at its upper, connected to the filter head 10 end.
• the housing 2 encloses a positively arranged in the interior of the region 23 pot 3.
• the pot 3 forms in its interior a collecting space for water, which is separated from the fuel filter 1 flowing through the fuel, in particular diesel fuel.
• the pot 3 is made of a transparent material, in particular transparent plastic.
• the housing 2 including its area 23 expediently also consists of a plastic which is fiber-reinforced for strength reasons, for example with glass or carbon fibers, and is therefore not transparent, but has a much higher mechanical strength and thus compressive strength than the pot 3.
• the housing 2 In its area 23, the housing 2 has a plurality, here four equally spaced over the circumference of the display openings 24 through which the pot 3 is visible from the outside of the transparent material. In this way, a water level in the pot 3 can be optically perceived by an operator from any circumferential direction.
• a drain valve 34 is arranged, which is designed here as a screw valve and in its interior a water drainage channel 33 contains. This is formed at the lower, outer end as a hose connection 35, on soft a water drain hose when needed, that is, when draining water from the pot 3, can be plugged.
• FIG. 2 of the drawing shows the fuel filter 1 from FIG. 1 in a longitudinal section.
• the filter head 10 with the fuel hand pump 13 is visible again.
• a conventional check valve 14 is now visible in the interior of the filter head 10.
• the filter head 10 On its underside, the filter head 10 has an internal thread 15, with which the housing 2 by means of an integrally formed at its upper end external thread 25 with the interposition of a sealing ring 26 sealingly, but releasably, is screwed.
• a filter element 4 is arranged, which consists of a hollow cylindrical filter material body 40 which is bordered by an upper end plate 41 and a lower end plate 42 frontally.
• a grid-shaped support body 44 is arranged, which supports the filter material body 40 during its flow radially from outside to inside against the forces occurring therein.
• the transparent pot 3 is arranged, it being clearly visible here that the region 23 of the housing 2 encloses the pot 3 on the outside thereof, with the exception of the display openings 24, in a form-fitting manner.
• the pot 3 exerted from the inside pressure forces are transmitted directly to the region 23 of the housing 2.
• two of the display openings 24 shown here in dashed lines in the area 23 of the housing 2 can be seen in the background.
• the pot 3 has a radially outwardly projecting collar 31.
• a step 21 is formed on the inner circumference of the housing 2, on which the collar 31 rests sealingly.
• the seal is effected here, for example, by means of a weld 32, which is preferred is produced by friction welding.
• a weld 32 which is preferred is produced by friction welding.
• an adhesive seam or a separate sealing ring may also be provided.
• the drain valve 34 serves to drain water that has accumulated in the collecting chamber 30 of the pot 3. By loosening the drain valve 24 designed as a screw valve by means of a suitable screwing tool, the water drainage channel 33 passing through the drain valve 34 is opened. On the hose connection 35, a water discharge hose, not shown here, can be attached to the drained water targeted and without risk of pollution z. B. to derive an external disposal container.
• the housing 2 is shown with its individual parts in an exploded view in longitudinal section.
• the housing 2 is visible, which is open at the top and on its outer periphery, the external thread 25 has.
• the sealing ring 26 is visible, which serves for sealing the housing 2 against the filter head 10, not shown in Figure 3.
• two of the four viewing openings 24 are visible.
• the housing 2 is formed with a central opening for the drain valve 34.
• the pot 3 is shown in the transparent material with its integrally formed on the upper collar 31. In its central lower region of the pot 3 also has an opening for receiving the drain valve 34th
• drain valve 34 is shown, which is screwed into the pot 3 with the interposition of a sealing ring 36.
• the housing 2 and the pot 3 and the other items shown in Figure 3 are first prepared separately, wherein the housing 2 expediently from a fiber-reinforced, opaque plastic and the pot 3 is injected from an unreinforced, transparent plastic. The pot 3 is then inserted from above into the housing 2 until the pot 3 comes to lie in the lower region 23 of the housing 2 and is enclosed by this form-fitting manner. In the area of the step 21 and the collar 31, the housing 2 and the pot 3 are sealingly connected together, as welded or alternatively glued or sealed by means of a separate sealing ring.
• the housing portion 23 and the pot 3 at their common contact surfaces over the entire surface or at least in the edge region of the display openings 24 to each other so that even when loaded from the outside of the pot 3 is supported by the portion 23 of the housing 2.
• the connection can be made here for example by welding or gluing.
• FIG 4 The assembled state of the individual parts shown in Figure 3 is shown in Figure 4, also in longitudinal section.
• the sealing ring 26 is now placed in the region of the external thread 25 on the outer circumference of the housing 2.
• the pot 3 is located in the lower, surrounding him area 23 of the housing 2 and is sealed in the region of the step 21 and the collar 31 by means of the weld 32.
• the drain valve 34 is screwed into the pot 3 with the interposition of the sealing ring 36.
• Through the transparent pot 3 through two of the display openings 24 shown here in dashed lines can be seen in the background.
• the drain valve 34 in the pot 3 is unscrewed so far that the sealing ring 36 comes out of contact with the pot 3. In this way, the water drainage channel 33 is opened and the water located in the collecting space 30 can drain off. An operator can observe the level of the water through the display openings 24 and close the drain valve 34 by tightening, as soon as the water has flowed completely out of the collecting space 30 and only fuel is in the collecting space 30. LIST OF REFERENCE NUMBERS

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Filtration Of Liquid (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49170662

Family Applications (1)

Country Status (2)

Cited By (2)

Families Citing this family (2)

Citations (8)

Family Cites Families (2)

• 2012
  • 2012-09-14 DE DE102012216355.7A patent/DE102012216355A1/de not_active Withdrawn
• 2013
  • 2013-08-29 WO PCT/EP2013/067920 patent/WO2014040863A1/fr not_active Ceased

Patent Citations (8)

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