Classifications

• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
  • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
  • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
• • 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
  • B01D35/005—Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
• • 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
  • 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
  • B01D35/306—Filter mounting adapter
• • 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
  • F02M37/32—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
• • 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
  • B01D2201/30—Filter housing constructions
  • B01D2201/309—Housings with transparent parts
• • 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

Definitions

• the invention relates to a filter device, in particular for contaminated with water addition fluids such as diesel oil, with a filter housing in which at least one filter element can be accommodated, the filter medium separates a raw side from a clean side during filtration in the filter housing, wherein a water collecting device is present on the clean side absorbs separated water.
• Filter devices of the above type are known in the art. They are used, for example, in fuel systems for internal combustion engines, in order to protect sensitive components, in particular injection systems, from being impaired by water components entrained in the fuel.
• the separation of entrained in the fuel water components can be effected by a coagulation process, in which water droplets are formed on the filter medium, which can flow from a formed on the filter element separating chamber for water collecting.
• the invention has the object to provide a filter device which is characterized by a comparatively higher efficiency of water separation. This object is achieved according to the invention a filter device having the features of claim 1 in its entirety.
• an essential feature of the invention is that collecting chambers are formed in the water collecting device both for water flowing out of the clean side and for the water flowing out of the raw side.
• the filter device according to the invention can be operated with fuel, which is more heavily laden with water, without the effect being impaired, for example by a supersaturation of the filter medium.
• the two collecting chambers are fluid-tightly separated from each other.
• the filter element during the filtering process of the side wall of the filter housing adjacent outer raw side to the inner, forming the clean side filter cavity can be flowed through, from which the separated water flows into the first collection chamber of the collector.
• a separating device which forms a separating element both between the lower end of the filter element receiving the main part of the housing and between see first and second collecting space of the water collecting device.
• the arrangements can be made with particular advantage so that the separator radially offset a aligned on the axis of the filter cavity of the filter element central passage for the outflow of pure water deposited in the centrally located in the collecting first collecting space and at least one to the passage Having passage for the outflow of the raw-separated water to the second plenum, which surrounds the first plenum.
• At least one gap opening preferably in the form of a circumferential annular gap, can be provided between the inner wall of the housing and the bottom end region of the filter element, via which the water flows from the raw side into the assignable collecting container ,
• the arrangement can be made with particular advantage so that the collector facing the lower end of the filter medium or the bottom end portion of the filter element of an end cap which is fixed to an element receptacle of the filter housing, which has the central passage for flowing out of the clean side water and together with a running between the central passage and the side wall of the housing wall portion in which the passages for the outflow of water the raw side are formed, the separating device forms.
• the arrangement can be made in this case so that the element receptacle for receiving a central pipe socket of the end cap, which continues the filter cavity, has a central receiving socket whose lower end edge, which faces the collector, passing through a cup-shaped bottom part of the housing is formed, in sealed connection with the upper end edge of the first collecting space, which is formed by a centrally located in the bottom part, the bottom side closed hollow cylinder.
• the side wall is connected via a sealing element with the annular body and closes together with this the second, crude-side collecting space, which surrounds the inner first collecting space.
• a drain plug is arranged on the bottom side at each collecting chamber, and with particular advantage the arrangement can be made such that the bottom part has at least one wall part enabling visual recognition of at least the filling level of the outer, second collecting chamber.
• the bottom part can be integrally formed, for example, from a plastic material of sufficient transparency.
• the arrangement may advantageously be such that the drain plug of the inner, first collecting chamber is arranged on a sight tube which extends downwards to form a visually usable observation path from the bottom of the first collecting chamber.
• FIG. 1 shows a longitudinal section of a provided with a water separator fuel filter device according to the prior art.
• FIG. 2 shows a slightly schematically simplified drawn longitudinal section of an embodiment of the filter device according to the invention.
• FIG. 3 shows a comparison with FIG. 2 enlarged drawn partial longitudinal section of the designated in Figure 2 with III district.
• the invention will now be described by way of example of a fuel filter provided in a fuel supply system (not shown) of an internal combustion engine for purifying diesel oil contaminated with certain impurities of water.
• the invention is equally suitable for other types of fluids.
• the device has a filter housing 1 with a hollow cylindrical main part 3 and a bottom part adjoining the underside thereof. At the upper end of the main part 3, a housing cover 7 is screwed, which is removable for installation and removal of a filter element 9. Between the outside of the filter medium formed by a filter medium 1 1 of the accommodated in the housing 1 filter element 9 and the inner wall of the housing 1 is a gap which forms the raw side 13 during the filtration process.
• the fuel to be purified is fed via an inlet opening 1 5 to the raw side 1 3 and flows through the filter element 9 from the outside inwards toward an inner filter cavity 1 7, which forms the clean side 19 during the filtration process.
• end caps 21 and 23 are provided at the ends, forming the enclosures for the filter medium 1 1 and a fitting on the inside, fluid-permeable support tube 25.
• a hydrophobic sieve 26 which surrounds the inner filter cavity 17 in a tubular manner.
• a filter medium 11 is used in such fuel filters, which coagulates the water entrained by the fuel, so that water enters Drop shape precipitates that remains in the space between the support tube 25 and hydrophobic wire 26 and drops, since the screen 26 is impermeable to coagulated water droplets.
• the intermediate space therefore forms a water separation chamber 27 into which the separated water drops to the end cap 23.
• the filter element 9 is fixed to a housing-fixed element receptacle 29, which is located above the bottom part, which forms a water collecting chamber 31, from the separated water via a water drain 33 can be discharged.
• a central pipe socket 35 as a passage for the clean side 19, ie the inner filter cavity 1 7, exiting, cleaned fuel to one in the Element recording 29 located fuel outlet 37 and from there to the outside of the housing 1 passes.
• a water passage 39 surrounding the pipe socket 35 and open to the separation chamber 27 is formed in the end cap 23, via which the separated water passes directly along the outside of the element receptacle 29 to the water collection chamber 31.
• the corresponding flow conditions are illustrated in FIG. 1 with flow arrows, of which the arrows 41 illustrate the fuel flow to the raw side 13, the arrows 43 the flow of the purified diesel oil and the arrows 45 the water flow.
• the end cap 23 so forms a separator, which is the main part 3 of the housing 1 separates from the underlying bottom part, which forms the water collection chamber 31.
• Fig.2 which shows the embodiment of the filter device according to the invention to be described here
• the inlet opening (1 5 in Figure 1) for the fuel inlet to the raw side 13 of the housing 1 is not shown.
• the internal structure of the filter element 9 is not shown because it may correspond to the prior art shown in Fig.1.
• cleaned fuel present in the element receptacle 29 fuel outlet 37 is present, which leads to the outside of the housing 1.
• the separator between the housing main body 3 and the underlying collecting device (bottom part) is located in the embodiment of Figure 2 between the outer edge the end cap 23 and the housing wall 53 a gap 18, via which the raw side 13 continues downward in the direction of the element receptacle 29.
• the raw side 13 separated water flows, as illustrated by arrow 45, in the direction of the bottom part.
• the element receptacle 29 With its upwardly projecting receiving socket 49, the element receptacle 29 not only forms the seat for the central pipe socket 35, which protrudes from the end cap 23 of the filter element 9 and is sealed in the receiving socket 49 by sealing rings 57, but also forms the separating device between the raw side 13 and clean side 19 and thus between a clean-side, first plenum 61 and a raw-side, second plenum 67 in the bottom part.
• the first collecting space 61 is formed by a boarder closed hollow cylinder 59, which is open at the upper end. The end edge of this upper opening of the first collecting chamber 61 is connected via a sealing ring 63 with the lower end edge 65 of the receiving nozzle 49 of the element receptacle 29 in connection.
• the first water collecting chamber 61 which is part of the clean side 19 of the system, is sealed in a fluid-tight manner with respect to the surrounding space inside the bottom part. This part forms the second water collection room 67.
• the element holder 29 has a wall part 51 which extends between the receiving socket 49 and the housing wall 53.
• This wall portion 51 has passages 55, which in addition to the hollow cylinder 59 of the first plenum 61 in this open surrounding second plenum 67 and flows through the unfiltered separated water, so that the second plenum 67 forms part of the raw side 13 extent.
• the cup-shaped bottom part engages with its upper edge region an annular body 69 which extends from the wall portion 51 having the passages 55 downward, wherein for the sealing of the second collecting space 67 outside a sealing element 71 is inserted between steps on the annular body 69 and the wall of the bottom part.
• the bottom part may be integrally formed from a material which is translucent at least to the extent that an observation of the level is visually recognizable. While the outer second plenum 67 is so far visible, the observation of the level of the inner first plenum 61 may be difficult or even impossible if the outer plenum 67 is correspondingly far filled.
• the bottom-side discharge devices 73 and 75 provided for both collecting chambers 61 and 67 are arranged at different height levels, wherein, as shown in the drawing, the discharge device 73 is away from the bottom of the first collecting space 61 via a pipe section 77 is arranged offset down.
• the pipe section 77 thus forms a sight tube, which makes it possible to drain water from the first water collection chamber 61 to such an extent that there is virtually no leakage of the overlying diesel oil because the discharge process is visually observable.

Landscapes

• 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)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=45094569

Family Applications (1)

Country Status (6)

Cited By (4)

Families Citing this family (8)

Citations (5)

Family Cites Families (6)

• 2011
  • 2011-01-15 DE DE102011008671A patent/DE102011008671A1/de not_active Withdrawn
  • 2011-11-19 WO PCT/EP2011/005850 patent/WO2012095124A1/de active Application Filing
  • 2011-11-19 EP EP11791212.1A patent/EP2663378B1/de active Active
  • 2011-11-19 JP JP2013548746A patent/JP2014508877A/ja active Pending
  • 2011-11-19 US US13/261,693 patent/US9751031B2/en active Active
  • 2011-11-19 CN CN201180065433XA patent/CN103328068A/zh active Pending

Patent Citations (5)

Also Published As

Similar Documents

Legal Events