CN103785208A - Filter device with filter separation layer - Google Patents

Filter device with filter separation layer Download PDF

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Publication number
CN103785208A
CN103785208A CN201310755523.2A CN201310755523A CN103785208A CN 103785208 A CN103785208 A CN 103785208A CN 201310755523 A CN201310755523 A CN 201310755523A CN 103785208 A CN103785208 A CN 103785208A
Authority
CN
China
Prior art keywords
filter
fluid
isolated
tube
filtration layer
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.)
Pending
Application number
CN201310755523.2A
Other languages
Chinese (zh)
Inventor
M·库施蒂克
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
Priority to DE102012219979.9 priority Critical
Priority to DE201210219979 priority patent/DE102012219979A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN103785208A publication Critical patent/CN103785208A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/88Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor having feed or discharge devices
    • B01D29/90Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor having feed or discharge devices for feeding
    • B01D29/908Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor having feed or discharge devices for feeding provoking a tangential stream
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/76Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/86Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • B01D29/865Retarding cake deposition on the filter during the filtration period, e.g. using stirrers by vibration of the liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D36/00Filter circuits or combinations of filters with other separating devices
    • B01D36/003Filters in combination with devices for the removal of liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/24Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32Arrangements 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
    • F02M37/34Arrangements 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 by the filter structure, e.g. honeycomb, mesh or fibrous

Abstract

The invention relates to a fitler device particularly for fuel or urea. The filter device (10) has a filter separation layer (16) for filtering a fluid, wherein the filter separation layer (16) is designed as a pipe wall. A fluid guiding unit (20) is provided, with which the fluid to be filtered is conducted around the pipe wall in the circumferential direction.

Description

With the filter of isolated by filtration layer
Technical field
The present invention relates to be a kind ofly particularly useful for fuel, as bavin Water Oil Or Gas or for the filter of urea, its band is useful on the isolated by filtration layer that filters fluid.In addition the present invention relates to the purposes in a kind of fuel feed system that this filter is applied in to motor vehicle.
Background technology
Modern automotive, the filter of the fuel feed system of for example car or bogie should especially have such function, guiding is cleaned by the dirt particle of the fluid of filter.In order to realize this function, be known that the filter that is especially filter core form is placed in filter housing.Filter housing is designed with the filter housing cup of cylindricality conventionally, this filter housing cup by means of filter housing lid by Fluid Sealing seal.It is especially the filter member of diaphragm or this form of separating layer that filter core is designed with, and this filter member separates the purification side of filter with its filtration side.
Fuel or urea are guided through isolated by filtration layer, and thus, the dirt particle being guided together in fluid and together directed water are blocked in the filter medium place of isolated by filtration layer and separated.For example use diaphragm with cellulose layer (Lage Zellulose) and meltblown layer (Lage Melt-Blown) as isolated by filtration layer, this diaphragm extends yardstick perpendicular to its plane and is flowed through.At this, particulate to be leached is along with the time stockpiles in isolated by filtration layer and stops up its aperture.
In order hour to realize the life-span that filter is grown as far as possible at structure space, the filtering surface of isolated by filtration layer designs greatly as far as possible and isolated by filtration layer is designed with multiple little folds for this reason and is also designed with if possible rivel.Can relatively many particulates be stored in isolated by filtration layer or on isolated by filtration layer which, and it not stopped up completely.
Summary of the invention
Be provided with a kind of filter that is particularly useful for fuel or urea according to the present invention, its band is useful on the isolated by filtration layer that filters fluid, wherein, isolated by filtration layer is designed to tube wall, and be provided with fluid guiding device, by means of this fluid guiding device by fluid to be filtered around tube wall along circumferential direction around guiding.
The present invention is based on such understanding, that is, in the filter of traditional fuel injection system, particulate to be leached is mainly stored in filter member or in filter member.Traditional isolated by filtration layer has chaotic structure as deep bed filter, and particulate to be separated out is blocked in the aperture of this structure by means of adhesive force.Particulate is accumulated and is stopped up its aperture in isolated by filtration layer.Filtering material can not be regenerated.Have mobilization force to be applied on particulate, this mobilization force is pushed particulate along the percolation direction of isolated by filtration layer simultaneously.Can overcome those by means of this mobilization force particulate is kept off to the adhesive force in the structure of isolated by filtration layer.Particulate is after this by the filtration side that purifies side arrival filter.Traditional isolated by filtration layer forms the incomplete barrier for particulate to be separated.In the time being greater than adhesive force through the mobilization force of isolated by filtration layer, particulate also can break-through isolated by filtration layer.
By means of filter according to the present invention, particulate is no longer by adhesive force but filtered and be blocked on isolated by filtration layer by surface filtration or cross force.In the time filtering, the mobile isolated by filtration layer that is basically parallel to of suspension side carries out along tube wall according to the present invention.Isolated by filtration layer or tube wall form around barrier, fluid to be cleaned is along the surface guiding of this barrier.The surface of isolated by filtration layer or tube wall is configured to preferred individual layer this compares the common chaotic structure of deep bed filter.Isolated by filtration layer or tube wall have the specific aperture of size at this.Size be less than porosity particulate can with together with fluid to be filtered through aperture and arrive and purify side, the particulate of porosity that size is greater than isolated by filtration layer or tube wall is blocked during during through isolated by filtration layer or through tube wall reliably at fluid.This work principle of filter, blocks all particulates that exceed specific dimensions reliably, is known as hereinafter completely and filters.First the particulate being blocked on isolated by filtration layer or tube wall is accumulated on isolated by filtration layer or tube wall, and fluid is afterwards transverse to this mobile break-through filtering material.Be gathered in particulate on isolated by filtration layer or tube wall but the overwhelming majority swept along and go by tangential flowing.On the boundary layer between fluid and isolated by filtration layer, effect has shear flow power, this shear flow power to make boundary layer keep very thin and prevent that to a great extent particulate from stockpiling or preventing the obstruction of isolated by filtration layer for a long time at filtering material place.On the flow direction of fluid to be cleaned, the accumulation of particulates that is so blocked and is swept along away at this is in fluid to be cleaned.At this, the gathering of particulate only realizes in the compresses lower section of filter streamwise in fluid to be cleaned.At the boundary layer place of filtering material or the isolated by filtration layer particulate that accumulation is not blocked in a large number.Isolated by filtration layer does not continue to be blocked by particulate and correspondingly especially must not be replaced in filter length of life yet.
According to the present invention, particulate is not blocked in isolated by filtration layer by adhesive force, but substantially only carries out pure surface filtration.Particulate is only blocked by stopping of isolated by filtration layer.Thus, the isolated by filtration layer of filter is absolute and does not exist particulate by overcoming adhesive force by discharging this possibility in filter as the efficiency of complete barrier or filter.Owing to producing shear flow power according to the present invention, particulate do not stockpile and thus isolated by filtration layer no longer block.Thus, the life-span of filter efficiency raising and filter is elongated.
In addition,, in filter according to the present invention, the hydraulic pressure of peripheral system and mechanical wave do not play negative effect.More precisely, by vibrating and vibrating, be applied to shearing force on the particulate at isolated by filtration layer place according to the present invention by positive reinforcement additionally.
According in the favourable improvement project of filter of the present invention, tube wall is designed to substantially cylindrical.Form circular chimney filter by means of this structure, this circle chimney filter itself has higher intensity and can correspondingly bear stronger mobilization force.The columniform tube wall of this class is preferably substantially tangentially streamed.The whole side surface radial flow of a part for fluid by tube wall be by filter separating layer, and tangentially flow out at the particulate at the lateral surface place of isolated by filtration layer.Thus, structure space generates the cross flow filter with respect to isolated by filtration layer the most closely.This class filter can design obviously compactlyer than the filter of traditional structure pattern.
According to fluid guiding device of the present invention in addition decision design have fluid inlet channel, longitudinal extension yardstick of this fluid inlet channel is tangential to tube wall orientation substantially.This class fluid inlet channel is responsible for according to the tangential incoming flow of isolated by filtration layer of the present invention and is produced lateral flow in the surface of isolated by filtration layer thus.In addition,, in the time that fluid inlet channel is arranged in tube wall upper end, it advantageously causes streaming according to the spirality of tube wall of the present invention.Fluid to be filtered due to the effect of shearing force arrives below and at this around tube wall.Flow the particulate collecting being blocked in the lower zone of filter by means of this.Can alternatively advantageously be designed with the tube wall of basic horizontal according to filter of the present invention.
Alternatively or additionally, in filter according to the present invention, be provided with fluid guiding walls, this fluid guiding walls sees that from cross section being basically parallel to described tube wall extends.This fluid guiding walls is that fluid to be filtered has formed flow channel, this passage with identical to a great extent flow cross section and be therefore responsible for by isolated by filtration layer, filter is carried out to uniform load.
According to according to the another favourable design of filter of the present invention, fluid guiding walls is designed to taper at least partly.Separated particulate can be collected to centre or the center of filter with reference to the cross section of tube wall by means of conical by its shape.In addition, can be diminished along glide path to the flow cross section of flowing through by fluid to be cleaned, can produce thus higher or raise be applied to the dividing potential drop on isolated by filtration layer.
In addition, in filter according to the present invention, preferably tube wall is remained in centre in the inner space being surrounded by fluid guiding walls or in the middle of seeing from wall cross-section and remaining on.Tube wall can so stream all sides.In addition also can make the structure space of whole filter compact especially.
Also arrange like this according to the improvement project of filter of the present invention, that is, tube wall is in distolateral being closed at its axial end portion section.According to this distolateral filter member that is not designed with of tube wall of the present invention.Prevent the axial short-circuit flow on isolated by filtration layer according to the present invention and stablized in addition the rotational flow at its lateral surface place with which.
In addition advantageously, be designed with hydrophobic tube wall at filter according to the present invention place.By means of hydrophobic the filter element in its surface that designs like this, in the time filtering, little water droplet also carries out from the separation of fluid simultaneously.The little water droplet separating is together with the fluid of lateral flow, owing to acting on the effect of shearing force at isolated by filtration layer place and be pulled away and especially arrive due to the effect of its weight or gravity the lowermost region of filter, in this region, these little water droplets can be collected and if desired can be by discharging in this region.Due in filter according to the present invention, the surface of isolated by filtration layer keeps totally always, and the quality that water separates also keeps constant higher in its whole life-span always.
In addition, the present invention relates to the application of this class filter at fuel for motor vehicle feed system place.
Particularly preferably be at this, filter according to the present invention is fixed on motor car engine, and especially in the following manner, that is, the vibration of engine is delivered on filter.By this class vibration and oscillation, the favourable shearing force being applied on particulate at filter element or isolated by filtration layer place of above having mentioned is additionally strengthened.
Accompanying drawing explanation
Next further set forth according to the embodiment of solution of the present invention by means of signal accompanying drawing.Shown in it:
Fig. 1 shown according to the vertical section of the embodiment of filter of the present invention,
Fig. 2 has shown the section II-II according to Fig. 1.
The specific embodiment
Fig. 1 and 2 is depicted as the fluid for filtering fuel for motor vehicle feed system not shown further, is the filter 10 of diesel fuel at present.
It is columniform filter element 12 that filter 10 is provided with basic, and this filter element 12 is in intermediate arrangement is being circular filter housing 14 substantially.Filter element 12 is provided with isolated by filtration layer 16, and it is circular cylindricality tube wall that this isolated by filtration layer 16 is configured to cross section.Tube wall at it with reference to the bottom section of figure 1 or sentence bottom surface 18 distolateral sealings at end regions and construct.
At opposed upper end region place, the isolated by filtration layer 16 that is designed to tube wall is remained in filter housing 14 regularly in centre position.In this upper end region, have the fluid inlet channel on filter housing 14 22 as a part for fluid guiding device 20, longitudinal extension yardstick of this fluid inlet channel 22 is substantially towards tube wall tangential orientation and in addition slightly towards having a down dip.This class fluid inlet channel 22 by fluid to be filtered or material tangentially direction be directed to cross section there and be also on round shape, especially circular isolated by filtration layer 16.
Fluid inlet channel 22 passes in the section 24 of filter housing 14, and the shell wall of this section 24 is designed to fluid guiding walls 26.The fluid guiding walls 26 of this section 24 forms the another part of fluid guiding device 20 and is parallel to the cylindrical extension of isolated by filtration layer 16.Therefore it realize the flow channel 28 of the fluid to be filtered for having entered, in this flow channel 28, fluid cross spirally flows in the surface of isolated by filtration layer 16 towards side surrounding ground (also referring to Fig. 2 arrow 32) and because the reason of gravity slightly flows downward at this.
Obtain targetedly surface filtration or cross flow filter at this, the particulate 30 being blocked on isolated by filtration layer on 16 by it is taken away by the crossing current as shown in the arrow 32 in Fig. 2.The fluid cross of so filtering is radially passed isolated by filtration layer 16 in the flow direction marking with arrow 32, and this isolated by filtration layer 16 can not stopped up by particulate 30.
Below this cylindrical sector 24 of filter housing 14 fluid guiding walls 26 as the another partial design of fluid guiding device 20 become towards below taper shrink.The tapered segment 34 of this fluid guiding walls 26 raises slightly because the contraction of the flow channel in this formation makes the fluid pressure being applied on isolated by filtration layer 16.Meanwhile, the mobile speed of indicating with arrow 32 also improves, and this has been pulled away favourable effect to those particulates 30, and these particulates 30 are blocked in fluid to be cleaned and there and especially to be accumulated on isolated by filtration layer 16 or on tube wall.
In addition, these particulates 30 by or be directed to the centre of filter housing 14 by means of conical by its shape, its accumulation or be collected in particulate and water collecting chamber 36 in the lower curtate of filter housing 14 there.
Isolated by filtration layer 16 this by porosity size at 1 μ m to 10 μ m, preferably make to the polytetrafluoroethylene (PTFE) (PTFE) between 7 μ m at 3 μ m.Isolated by filtration layer 16 is preferably installed with the form of thin filtration membrane or filter paper and is especially pasted in the accompanying drawings in supporting construction not shown further at this.Isolated by filtration layer 16 can be alternatively preferably made for the single structure of self-supporting by pottery.
Isolated by filtration layer 16 is particularly preferably designed to hydrophobic, thereby the water particle containing in fluid is also blocked there and is collected in equally in particulate and water collecting chamber 36.36 preferred arrangements of particulate and water collecting chamber are in the lower curtate of filter 10 and be especially removable.Its capacity matched in this and the replacing time period needing.
The cleaning fluid entering through isolated by filtration layer 16 is guided out filter element 12 upward by the inner space 38 of the isolated by filtration layer 16 that is designed to tube wall, wherein, is provided with the center return duct 40 for this class filtrate in this upper end.
Under this class filter 10 is particularly preferably so arranged on, on motor vehicle internal combustion engine not shown further, that is, the vibration of internal combustion engine and vibration are delivered on filter 10.

Claims (10)

1. one kind is particularly useful for the filter (10) of fuel or urea, its band is useful on the isolated by filtration layer (16) that filters fluid, wherein, isolated by filtration layer (16) is designed to tube wall, and be provided with fluid guiding device (20), fluid to be filtered by means of described fluid guiding device (20) by around tube wall along circumferential direction around guiding.
2. filter according to claim 1, wherein, tube wall is designed to substantially cylindrical.
3. filter according to claim 1 and 2, wherein, fluid guiding device (20) is designed with fluid inlet channel (22), and longitudinal extension yardstick of described fluid inlet channel (22) is tangential to tube wall orientation substantially.
4. according to the filter described in any one in claims 1 to 3, wherein, fluid guiding device (20) is designed with fluid guiding walls (26), and described fluid guiding walls (26) is basically parallel to described tube wall from cross section and extends.
5. filter according to claim 4, wherein, at least localized design is tapered for fluid guiding walls (26).
6. according to the filter described in claim 4 or 5, wherein, tube wall remains in the inner space being surrounded by fluid guiding walls (26) in centre.
7. according to the filter described in any one in claim 4 to 6, wherein, tube wall is in distolateral being closed at its axial end portion section.
8. according to the filter described in any one in claim 1 to 7, wherein, tube wall is designed to hydrophobic.
9. the application on fuel for motor vehicle feed system according to the filter described in any one in claim 1 to 8 (10).
10. application according to claim 9, wherein, filter (10) is fixed on motor car engine.
CN201310755523.2A 2012-10-31 2013-10-30 Filter device with filter separation layer Pending CN103785208A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102012219979.9 2012-10-31
DE201210219979 DE102012219979A1 (en) 2012-10-31 2012-10-31 Filter device, particularly for fuel or urea, has filter separation layer for filtering fluid, which is designed as pipe wall, where fluid to be filtered is conducted with fluid guiding unit around pipe wall in circumferential direction

Publications (1)

Publication Number Publication Date
CN103785208A true CN103785208A (en) 2014-05-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310755523.2A Pending CN103785208A (en) 2012-10-31 2013-10-30 Filter device with filter separation layer

Country Status (2)

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CN (1) CN103785208A (en)
DE (1) DE102012219979A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015215777A1 (en) * 2015-08-19 2017-02-23 Mahle International Gmbh water

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86200451U (en) * 1986-01-27 1987-02-18 梁殿栋 Cyclone purifier
CN2087528U (en) * 1990-09-27 1991-10-30 新疆维吾尔自治区哈密地区行政公署水电处 Rotary filtering type filter
DE102005013553A1 (en) * 2005-03-23 2006-09-28 Krones Ag Filter useful in breweries comprises hollow filter element arranged inside a housing so that the liquid being filtered flows in a spiral path to the end of the housing
CN201470490U (en) * 2009-09-07 2010-05-19 中国石油化工股份有限公司 cyclone separator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7785465B2 (en) * 2007-11-05 2010-08-31 McA1 Corporation Apparatus and method for de-watering and purifying fuel oils and other liquids
JP4941393B2 (en) * 2008-04-14 2012-05-30 トヨタ紡織株式会社 Dilute fuel treatment system for internal combustion engine
DE102010062595A1 (en) * 2010-12-08 2012-06-14 Mahle International Gmbh Filter device for internal combustion engine for motor vehicle, particularly fuel or lubricant filter, has filter housing arranged in radial direction, where water separator is arranged on clean side of filter element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86200451U (en) * 1986-01-27 1987-02-18 梁殿栋 Cyclone purifier
CN2087528U (en) * 1990-09-27 1991-10-30 新疆维吾尔自治区哈密地区行政公署水电处 Rotary filtering type filter
DE102005013553A1 (en) * 2005-03-23 2006-09-28 Krones Ag Filter useful in breweries comprises hollow filter element arranged inside a housing so that the liquid being filtered flows in a spiral path to the end of the housing
CN201470490U (en) * 2009-09-07 2010-05-19 中国石油化工股份有限公司 cyclone separator

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Application publication date: 20140514