CN110234414A - Fluid filter with the filter plug-in containing pre-filter element and main filter element - Google Patents
Fluid filter with the filter plug-in containing pre-filter element and main filter element Download PDFInfo
- Publication number
- CN110234414A CN110234414A CN201880010774.9A CN201880010774A CN110234414A CN 110234414 A CN110234414 A CN 110234414A CN 201880010774 A CN201880010774 A CN 201880010774A CN 110234414 A CN110234414 A CN 110234414A
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- China
- Prior art keywords
- filter
- fluid
- housings
- plug
- filter element
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 111
- 238000011045 prefiltration Methods 0.000 title claims abstract description 98
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 230000004888 barrier function Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000005325 percolation Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/14—Cartridge filters of the throw-away type having more than one filtering element
- B01D27/146—Cartridge filters of the throw-away type having more than one filtering element connected in series
-
- 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
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
- B01D2201/298—End caps common to at least two filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/46—Several filtrate discharge conduits each connected to one filter element or group of filter elements
Abstract
The present invention relates to a kind of fluid filter (10), in particular for fuel or oil, including filter housings (12) and the filter plug-in (20) removably arranged in filter housings (12), filter plug-in is with pre-filter element (22) and has main filter element (24), they are stacked arrangement along longitudinal axis (26) direction of filter housings (12) in filter housings (12).Filter housings (12) have the main filter discharge outlet (100) for main filter element (24) for the prefilter discharge outlet (98) of pre-filter element (22) and with prefilter discharge outlet (98) separate construction.Two discharge outlets are prevented fluidly closing in the running position in filter housings (12) in filter plug-in (20).Filter plug-in (20) can be transferred in drain location from its running position by the removal campaign of filter plug-in (20) being axially directed to, the side (60) of not filtering of pre-filter element (22) prevents fluidly connecting with prefilter discharge outlet (98) in drain location, and the side (66) of not filtering of main filter element (24) prevents fluidly connecting with main filter discharge outlet (100).Fluid filter (10) according to the present invention can be realized the simplification of filter plug-in (20) and quickly replacement.
Description
Technical field
The present invention relates to a kind of fluid filters to have filter housings and in filter in particular for fuel or oil
The filter plug-in removably arranged in shell, filter plug-in is with pre-filter element and has main filter element,
They are stacked arrangement along the direction of the longitudinal axis of filter housings in filter housings each other.Furthermore the present invention relates to one kind
Filter plug-in.
Background technique
There are three the fuel filter of annular filter element, their phases for a kind of tool known from 2 649 292 B1 of EP
For being arranged coaxially to each other, and wherein, at least two in annular filter element are axially wrong relative to each other
Open arrangement.Annular filter element is connected in series and can successively be flowed by fluid to be filtered.
20,07/,128 306 A2 of WO discloses a kind of liquid filter for internal combustion engine, with filter housings,
The filter housings have in the filter plug-in wherein removably arranged.In maintenance posture, clean oil pipe is relative to mistake
Filter shell lifts, so that the oil in filter housings can flow into the flow pass of filter housings.
In addition, a kind of fuel filter known from 10 2,015 003 165 A1 of DE, has filter housings and in mistake
The filter cell removably arranged in filter shell, wherein main filter element and pre-filter element are along longitudinal side
It is stacked arrangement to each other.Filter housings have prefilter discharge outlet and main filter discharge outlet.It is drawing in a longitudinal direction
Out when filter cell, filter system is transferred in drain location, wherein pre-filter element does not filter side and pre-filtering
Device discharge outlet prevents fluidly connecting and the side of not filtering of main filter element prevents fluidly connecting with main filter discharge outlet.But
It is the separated outflow that cannot achieve main filter discharge outlet and prefilter discharge outlet, because they converge in drain location
To together and filter system passes through prefilter discharge outlet on the whole and is drained.
If the filter plug-in of fluid filter is not implemented as lifelong component, they must be between the determining time
Every being replaced.Known filter, such as fuel filter have its filter by filter in particular for internal combustion engine
The complicated structure of shell and the troublesome replacement for only allowing filter plug-in.In multistage filter, that is to say, that have multiple
In the filter of the sequentially connected filter cell in front and back, last very long is usually needed in practice, until in filtering
Fluid in device shell is drained.Furthermore, it is possible to which will appear fluid get dirty, i.e. filtered reaches the clean of filter housings
Net side.This unit, such as Injection Facilities or internal combustion engine for will lead to downstream are affected or are damaged.
Therefore, the task of the present invention is to provide fluid filter described in a kind of beginning and a kind of filter plug-in, it
Can be realized filter plug-in simplification and quickly replacement.
Summary of the invention
Being related to fluid filter of the task is solved by fluid filter according to claim 1.Mistake according to the present invention
Filter inserts have the feature illustrated in claim 14.Improvement project of the invention is in specification and dependent claims
Middle explanation.
Fluid filter according to the present invention can especially be structured to fuel filter or be configured to oil strainer, especially
It is the internal combustion engine for motor vehicle.Fluid filter includes filter housings.The removably arrangement filtering in filter housings
Device plug-in unit.Filter plug-in has pre-filter element and main filter element.Pre-filter element and main filter element can
According to priority, it is in turn flowed by fluid to be filtered.By the multistage filtering of fluid, particularly preferred separating degree may be implemented
And/or establish the big volume flow that fluid to be filtered passes through filter.Pre-filter element and main filter element are along mistake
The longitudinal axis of filter shell is stacked arrangement each other.Main filter element can be arranged in above pre-filter element herein or
Lower section.This allow that the particularly compact structure of fluid filter.It can especially reduce about filter housings longitudinal axis
Radial direction is space requirement needed for being packed into fluid filter.When filter plug-in is arranged in filter housings, mistake
The longitudinal axis of filter shell can be fallen on together with the longitudinal axis of filter plug-in herein.The longitudinal axis of filter housings is in fluid
It is typically vertical or be approximately perpendicularly orientated in filter operation.It is preferably up to 30 ° of the deviation of longitudinal axis and vertical line, especially excellent
20 ° of highest are selected, pole is particularly preferably up to 10 °.Pre-filter element can be arranged in above or below main filter element herein.
In other words, fluid filter can be flowed by fluid from the top down or in turn.With pre-filter element and main filter
The filter plug-in of element forms (structure) unit that can integrally manage.It only needs replacing filter plug-in and does not have to replacement packet
Include the unit of pre-filter element and main filter element.Filter housings have according to the present invention for pre-filter element
Prefilter discharge outlet and the main filter discharge outlet for main filter element with prefilter discharge outlet separate construction.Needle
Therefore two filter cells of filter plug-in are provided with itself (fluid) discharge outlet respectively.It is possible thereby to new
Filter plug-in replacement filter plug-in the preacceleration filter cell emptying.In filter plug-in in filter housings
In running position in prefilter discharge outlet and main filter discharge outlet are anti-fluidly closes.Therefore, at filter plug-in
When in the running position in filter housings, fluid is not had and is flowed out from discharge outlet.Two discharge outlets pass through in filter head housings
The filter plug-in arranged in running position in body is anti-fluidly to close.In this way, ensure that row in simple and reliable mode
Mouth is put to be prevented fluidly closing in the filter operation of fluid filter.
Filter plug-in can be transferred to row by the removal campaign of filter plug-in being axially directed to from its running position
During liquid level is set.This can for example be carried out by the case lid of the filter canister of one closing filter housings of unscrewing.Filter is inserted
Part maintains to tension in case lid in this case, for example mode is, with case lid via pass through card slot, hasp or card
Mouth attachment device connection.In the drain location of filter plug-in, pre-filter element does not filter side and prefilter discharge outlet
Prevent fluidly connecting and the side of not filtering of main filter element prevents fluidly connecting with main filter discharge outlet.Side is not filtered to manage respectively
Xie Weifang is fluidly connected to the filter housings volume of the filter medium upstream of corresponding filter cell.In other words, pre-
The filtered fluid in side of not filtering of filter cell flows to pre-filter element.On the contrary, not filtering side in main filter element
Main filter element is flowed to by the pre-filtered fluid of pre-filter element.Therefore, the energy in the drain location of filter plug-in
Enough realize that fluid flows out to corresponding prefilter discharge from the region for not filtering side of pre-filter element or main filter element
In mouth or main filter discharge outlet.When replacing filter plug-in, taken out from filter housings completely by filter plug-in
Filter plug-in can be emptied in filter housings before.It is possible thereby to reduce the surplus remained in filter plug-in
And inhibit around fluid filter undesirable gets dirty.
It can be by the smooth fluid being arranged in filter housings from filter via the discharge outlet of two separate constructions
It is drawn in shell.Thus filter plug-in need not be taken out from the fluid in the filter housings or by the filter of replacement
Plug-in unit is inserted into fluid.Self-evident, prefilter discharge outlet is preferably placed in below pre-filter element and main filter
Discharge outlet is preferably placed in below main filter element.It is autonomous from filter housings under the effect of gravity that this can be realized fluid
Ground emptying.Generally speaking, in fluid filter according to the present invention, simplify and accelerate with pre-filter element and main mistake
The replacement of the filter plug-in of filter element.
In order to which the design of fluid filter simply constructs, can be set into according to the present invention, filter plug-in its
It hermetically sticks on filter housings in running position in filter housings, is discharged with to prevent fluidly closing prefilter
Mouth and main filter discharge outlet.Therefore the sealing of discharge outlet is caused in the case by filter plug-in itself.In order to seal
Recline, filter plug-in can preferably have one or more sealing elements.It can be at it according to filter plug-in of the present invention
It in inner seal is pasted in running position using pre-filter element and the difference of main filter element at least one end-cap
It leans against on filter housings.It is possible thereby to be further simplified the construction of filter plug-in.It can will especially be used for one or more
The pedestal or receiving portion of a sealing element are directly integrated into the end-cap equipped with sealing element.
Prefilter discharge outlet and main filter discharge outlet are opposite according to the present invention in the drain location of filter plug-in
It is sealed against one another.This can be caused by filter plug-in sealing against on filter housings.It is possible thereby to avoid without
The fluid of filtering from pre-filter element do not filter that side goes beyond main filter element do not filter side.It is possible thereby to avoid for master
The pollution damage of the higher level of filter cell.In other words, ensure that in the drain location of filter plug-in without
The fluid of filter can be advanced in the region only contacted in operation with pre-filtered fluid.
Filter housings can have housing bottom according to the present invention, which has the axis of the end side for fluid
To outlet.It can make to be arranged from shell by the fluid of the filter cell filtering along longitudinal axis at the bottom by axial outlet
Out.Axial outlet seals in the drain location of filter plug-in relative to prefilter discharge outlet and main filter discharge outlet.
It in this way can be moreover, avoid pollutant reaches the axial outlet of clean side in the drain location of filter plug-in.Axial outlet
Be arranged on housing bottom to preferred center, especially with the axis coaxial of filter housings.
The axial outlet of a kind of preferred improvement project according to the invention, end side is arranged in filtering by filter housings
Annular adapter tube in device shell surrounds interlocking.Filter plug-in is in running position and also in drain location, preferably by pre-
The end-cap of filter cell or main filter element hermetically sticks on the annular adapter tube of filter housings.It is possible thereby to protect
Card, not only in running position but also in drain location, does not have fluid from the filter cell being below and does not filter side
Reach the axial outlet of clean side.Annular adapter tube can preferably export with the longitudinal axis of filter housings and/or with axial direction coaxial
Arrangement.Annular adapter tube is preferably parallel to the longitudinal axis of filter housings from the inside that housing bottom extends to filter housings.
Annular adapter tube is therefore along the axial outlet of radial direction shielding about longitudinal axis.
Advantageously, the axial outlet of end side can in the running position of filter plug-in with pre-filter element or main mistake
Especially directly prevent fluidly connecting in the clean side of filter element.This simplifies pass through pre-filter element or main filter member
The fluid of part filtering is from the export in filter housings.Clean side is interpreted as being fluidly connected to the mistake of corresponding filter cell
The filter housings volume in filter medium downstream, the filter housings volume can be with having already passed through in fluid filter operation
The fluid of filter medium guidance is filled.
For the simplification into filter housings of particularly simple design structure and filter plug-in of fluid filter
Insertion, filter housings can have filter canister, have and divide from the introducing of filter housings opening towards its housing bottom
The interior diameter that grade attenuates.Thus filter housings can construct in the region of its inner wall for sealing against filter plug-in
Especially end-cap sealing surface section, with the introducing of filter housings opening increase at a distance from, these sealing surface areas
Duan Chaoxiang housing bottom becomes smaller at a distance from the longitudinal axis of filter plug-in.The sealing element of filter plug-in in this case with
Corresponding mode is different from each other at a distance from the longitudinal axis of fuel filter plug-in unit and is filtering in fluid filter
It is hermetically sticked on sealing surface section in operating status in device shell.It is possible thereby to generate no by the inner wall of the housing
On friction filter plug-in is inserted into it in filter housings in the case where the unnecessary overstress of its sealing element
In running position in.Simultaneously by the length of the corresponding axially-extending portion of sealing surface section it has been confirmed that from filter
When sealing element is detached from sealing surface section and rabbets when pulling out filter plug-in in tank.
The flowing that can arrange that one is used for fluid according to the present invention between pre-filter element and main filter element is led to
Road passes through that of pre-filter element and main filter element along the longitudinal axis of filter housings or filter plug-in
This corresponding direct limit of end-cap.Flow channel is therefore directly in two end-caps to correspond to each other of two filter cells
Between extend.In other words, the end-cap of limit flow channel is arranged in the phase each other of pre-filter element and main filter element
On the end face being mutually directed toward.Filter housings preferably have (arrangement in side) lateral outlet in this case, and flow channel is logical
Enter in the lateral outlet.Flow channel can be fluidly connected to pre-filter element or main filter member downstream.Typically,
The direction along longitudinal axis of flow channel and filter plug-in connects with being arranged in the clean fluid measured of the filter cell of top
It connects.Flow channel can be configured to radial flow channels.If the clean side of pre-filter element fluidly connects with flow channel
It connects, then fluid, which can be pumped from lateral outlet by means of the pump being connected on lateral outlet, is used for main mistake into filter housings
The entrance of filter element.Flow channel is preferably circlewise constructed about the longitudinal axis of filter plug-in.
It is possible thereby to managing for filter plug-in is further simplified again, so that pre-filter element and main filter element
Direct limit flow channel two end-cap constructions integral with one another.This is there is furthermore provided advantage in manufacturing technology and permit
Perhaps the particularly advantageous manufacture of fluid filter or filter plug-in.In addition, filter housings can use and be further simplified
Construction is especially implemented in the case where the chamber divided without shell side.
Fluid filter can have the water separative unit for separating the water contained in a fluid according to the present invention.Thus
The component for being connected to fluid filter downstream can be reliably protected to prevent harmful water content possible in fluid.In view of to the greatest extent may be used
The water contained in fluid, especially fuel can be efficiently separated, water separative unit preferably has coalescing medium.Coalescing medium can be with
For the anti-filter medium downstream for being fluidly connected to main filter element of the purpose of separative efficiency as big as possible.Coalescing medium
Implement with can according to need single-layer or multi-layer herein.Water separative unit is preferably placed in the filter of the lower section in running position
In element.
It is advantageously improved in scheme and is arranged in one kind, be arranged in pre-filter element or main mistake to water separation unit radial
Within filter element and the filter cell with water separative unit that can be flowed according to priority by fluid.This allow that fluid mistake
The particularly compact construction of filter.Preferably, in the filter cell for being wherein disposed with water separative unit in filter operation
It is radially flowed from outside to inside by fluid to be filtered.
It is particularly preferred that having the axial outlet and radial direction taken on housing bottom by built-in annular and surround interlocking
The feature that ground is arranged in the fluid filter of the water separative unit within filter cell can be, and filter housings are at shell bottom
There is the water out of the water for isolating from fluid, which is radially surrounded by annular adapter tube rabbets in portion.
In this way, water separative unit preferably radially is placed along within the filter cell that longitudinal axis is below.Water out
It is constructed on housing bottom at interval with axial outlet.Annular adapter tube not only surrounds the axial outlet of interlocking but also surrounds interlocking water
Outlet.Water out can be separated with axial outlet by annular barrier, be reached in axial outlet with to avoid the water isolated.Ring
Shape barrier especially concentrically and can be constructed radially on housing bottom within annular adapter tube with annular adapter tube.Water separation dress
Setting can hermetically stick in annular barrier in the running position of filter plug-in.In this way, from outside to inside flow when
The water isolated on water separation device directly reaches in the water collection channel constructed between annular barrier and annular adapter tube.
For the particularly compact structure of fluid filter, pre-filter element and main filter element according to the present invention may be used
Be respectively configured to circular filter element, especially with star fold filter medium.Preferably, pre-filter element and
Main filter element is arranged about the axis coaxial of filter housings.This simplifies filter plug-ins into filter housings
Insertion.
Filter plug-in for fluid filter according to the present invention is also fallen into frame of the invention, which inserts
Part with pre-filter element and have main filter element, they along the longitudinal axis of filter plug-in direction before and after successive
Ground arrangement.This filter plug-in can be replaced quickly and easily.
Further advantage of the invention illustrates from the description and the appended drawings.Feature that is previously described and will also continuing elaboration
It can be used separately for their own according to the present invention or for any kind of multiple combinations.
Detailed description of the invention
It is shown in the accompanying drawings:
Fig. 1 is shown in schematic longitudinal cross section with filter housings and the mistake in running position being arranged therein
The fluid filter of filter inserts, the filter plug-in have pre-filter element and main filter element；And
Fig. 2 shows the fluid filter of Fig. 1 with the filter plug-in in drain location.
Specific embodiment
Fig. 1 shows fluid filter 10 according to the present invention.The fluid filter 10 can be for example configured to for filtering
The fuel filter of the pollutant contained in fuel, especially diesel fuel out.Fluid filter 10 is for example adapted for having
Have in the motor vehicle of internal combustion engine and uses.
Fluid filter 10 includes openable filter housings 12, has the filter canister 14 with introducing opening 16 simultaneously
With the strainer cover 18 for closing filter canister 14.Strainer cover 18 can be screwed into filter canister 14.It is contemplated that
The fastening of another way of the strainer cover 18 in filter canister 14.Filter housings 12 can be for example by metal or by plastics
Material is made.
Filter plug-in 20 is removably arranged in the inner space of filter housings 12.The filter plug-in in Fig. 1
20 are in the running position in filter housings 12, so that fluid filter 10 can use in separation operation.Filtering
Device plug-in unit 20 includes pre-filter element 22 and main filter element 24.The two filter cells 22,24 are along filter head housings
The direction of the longitudinal axis 26 of body 12 is stackedly arranged in filter housings 12 each other.When filter plug-in 20 is mounted on filter
When in the running position in shell 12, the longitudinal axis 26 of filter housings 12 and the longitudinal axis 28 of filter plug-in 20 have fallen on one
It rises.Main filter element 24 is arranged in 22 downstream of pre-filter element with fluidly connecting.In other words, fluid to be filtered is filtering
Device operation in the current situation first percolation be arranged in filter housings 12 top pre-filter element 22 and then
Percolation is arranged in the main filter element 24 of 22 lower section of pre-filter element.
Pre-filter element 22 and main filter element 24 are implemented as circular filter element respectively, have about filter
Filter medium 30a, 30b that the longitudinal axis 28 of plug-in unit 20 is circular layout.The filter medium 30a of pre-filter element 22 and main mistake
The filter medium 30b of filter element 24 can be by fluid to be filtered respectively along the radial direction about 20 longitudinal axis 28 of filter plug-in
Direction flows from outside to inside.Filter medium 30a, 30b are implemented as the filtering bellows of star folding respectively.Pre-filter element 22
Upper end disk 32 releasably couple or can be coupled with case lid 18 via bayonet connection 34.Pre-filter element 22 is under
Side is kept by lower end disk 36.Main filter element 24 is arranged between upper end disk 38 and lower end disk 40 with being kept.Point
There is not the support tube 42 of a grid to support pre-filter element 22 and main filter element 24 in inside twelve Earthly Branches for radial
Filter medium 30a, 30b.Filter medium 36 is preferably bearing directly against on corresponding support tube 42 in inside.
The end-cap 36,38 of pre-filter element 22 and main filter element 24 to correspond to each other, i.e. pre-filter element
22 lower end disk 36 and the upper end disk 38 of main filter element 24 are axially arranged at interval relative to each other.Two
A end-cap 36,38, which circumferentially seals and (prevents fluidly) in interior side via sealing element 44,46 respectively, sticks on filter housings
On 12.Thus two end-caps 36,38 are used as seal disc and are axially drawn inside filter housings 12 by seal disc
It is divided into the prefilter chamber 48 with pre-filter element 22 and the main filter chamber 50 with main filter element 24.?
Arrangement one is for passing through pre- mistake between the upper end disk 38 of main filter element 24 and the lower end disk 36 of pre-filter element 22
The flow channel 52 of the pre-filtered fluid of filter element 22.The flow channel 52 passes through pre-filter element and main filter element
22,24 end-cap 38,40 to correspond to each other axially direct limit.In order to which fluid to be filtered is oriented to pre-filtering
Device element 22, filter housings 12 have first entrance 54.
The lower end disk 36 of the upper end disk 38 of main filter element 24 and pre-filter element 22 herein such as each other one
It constructs to body and can especially be implemented as plastic injection piece.The arrangement interval element 56 between two end-caps 36,38, it
Be formed separately on two end-caps 36,38.
Flow channel 52 substantially circlewise constructs.Flow channel 52 is exporting in the running position of filter plug-in 20
The lateral outlet 58 of side with the side of filter housings 12 (radial side) arrangement fluidly connects.At lateral outlet 58
Pump (not shown) can be coupled.Pump is not for filtering side by what first entrance 54 was drawn into prefilter chamber 48 for the fluid of pollution
60, by pre-filter element 22 to prefilter chamber 48 it is clean survey 62 and via flow channel 52 to lateral outlet 58
Suction.Pump is also used to the second entrance 64 by fluid draw from filter housings 12, pre-filtered via filter housings 12
It pumps to the main filter chamber 50 of filter housings 12 and does not filter side 66, pre-filtered fluid is passed through main filter element
24 filter medium 30b guides the clean side 68 of main filter chamber 50 into.First entrance 54, second entrance 64 and lateral outlet 58
It is respectively relative to be arranged on filter housings 12 with axially offsetting each other.
Main filter element 24 can radially have one to contain in a fluid for separating within its filter medium 30b
Water water separative unit 70.Water separative unit 70 advantageously comprises coalescing medium 72 herein, inserts annularly around filter
The longitudinal axis 28 of part 20 is arranged.Coalescing medium 72 can be arranged in main filtering with especially fluidly connecting as its is shown in Fig. 1
The downstream filter medium 30b of device element 24.Coalescing medium 72 constructs and for example by nothing in which can according to need single-layer or multi-layer
Woven fabric is made.Water separative unit 70 and two filter elements 22,24 herein with the longitudinal axis 28 of filter plug-in 20 coaxially
Arrangement.Fluid reaches Axial-running Out by separator unit 70 after percolation pre-filter element 22 and main filter element 24
Mouth 74, the Axial-running Out outlet structure is on the housing bottom 76 of filter canister 14.
Also construct the water of the water for isolating from fluid on housing bottom 76 at interval with axial outlet 74
Outlet 78.Axial outlet 74 and water out 76 surround interlocking by annular adapter tube 80 within filter housings 12.Main filter member
The lower end disk 40 of part 24 hermetically sticks on annular adapter tube using sealing element 82 in the running position of filter plug-in 20
On 80.It thus prevents filtered fluid and flows to axial outlet 74 or filtered below main filter element 24
Fluid reaches main filter discharge outlet 100 from clean side 68.
Radially within annular adapter tube 80, extend an annular barrier 84 between water out 78 and axial outlet 74,
Surround the axial outlet 74 of interlocking.In this way, constructing a water collection channel 86 between annular adapter tube 80 and annular barrier 84, lead to
In water out 78.Water separative unit 70 hermetically sticks in annular barrier 84 in running position.It is isolated from fluid
Water is flowed into water collection channel 86 based on gravity in the operation of fluid filter 10 and passes through water out 78 from filtering
It is flowed out in device shell 12.
Filter canister 14 has interior cross section, axially towards housing bottom 76, that is along for filter
The incoming direction 88 of plug-in unit hierarchically attenuates.Thus filter housings 12 have in the region of its inner wall 90 for hermetically pasting
The sealing surface section 92a-d on the end-cap 36,38,40 of filter plug-in 20 is leaned against, with the introducing with filter housings 12
The distance that opening 16 increases, sealing surface section become smaller at a distance from the longitudinal axis 26 of filter housings 12 towards housing bottom 76.
The upper end disk 38 of sealing element 44,46 and main filter element 24 on the end-cap 36,38 to correspond to each other it is another
The sealing element 96 of the lower end disk 40 of sealing element 94 and main filter element 24 is with corresponding mode and filter
The distance of the longitudinal axis 28 of plug-in unit 20 is different from each other and operation of the filter plug-in 20 in filter housings 12 shown in
It is hermetically sticked in position on the sealing surface section 92a-d of filter canister 14.It is possible thereby to simplify filter plug-in 20 and
It is inserted into the case where not generating the unnecessary stress of its sealing element 44,46,94,96 in filter housings 12
In running position in.
Pass through sealing of the sealing element 46 and 94 of the upper end disk 38 of main filter element on sealing surface 92b or 92c
It reclines, prevents fluidly closing the prefilter discharge for pre-filter element 22 in the running position of filter plug-in 20
Mouth 98.Similarly, pass through lower end disk 40 in running position for the main filter discharge outlet 100 of main filter element 24
The sealing against on sealing surface 92d of sealing element 96 and sealing element 82 sealing against by anti-stream on annular adapter tube 80
Close to body.The working method of discharge outlet 98,100 is discussed in detail in Fig. 2.
Fig. 2 shows the fluid filters 10 of Fig. 1, have the filter plug-in 20 being arranged in drain location.In order to more
Filter plug-in 20 is changed, first backs out case lid 18 from filter canister 14.Filter plug-in 20 herein via with case lid
18 bayonet connection 34 is axially lifted.Filter plug-in 20 be therefore in reverse to incoming direction 88 with a road section 102 from
Be moved out of in the filter canister 14 of filter housings 12, thus its be in shown in drain location.
By filter plug-in 20 from the removal in filter canister 14, sealing element 46 reaches embedding with sealing surface 92b disengaging
It connects.In a similar way, sealing element 44 reaches in the region of (covered) bypass passageways on the upside of sealing surface 92a.Thus
Pre-filter element 22 do not filter formd between side 60 and prefilter discharge outlet 98 fluidly connect and via flowing it is logical
Road 52 is formed between the clean side 62 and prefilter discharge outlet 98 of pre-filter element 22 and is fluidly connected.It is in prefilter
Therefore fluid in chamber 48 can flow under the influence of gravity into the prefilter discharge for being arranged in 22 lower section of pre-filter element
It is brought out in mouth 98 and from filter housings 12.
Sealing element 94 retains in the drain location of filter plug-in to be rabbeted with sealing surface 92c.It thus it can be prevented that not
Filtered, contaminanted fluid reaches in main filter chamber 50.It thus avoids pollutant and undesirably enters main mistake
In filter chamber 50.Filter plug-in 20 is preferably maintained in drain location before taking out completely in filter canister 14 at it
In, until prefilter chamber 48 has at least been emptied completely by approximation.
Furthermore in drain location, sealing element 96 is lifted until above sealing surface 92d.It thus opens from main filtering
Device chamber 50 does not filter flow path of the side 66 to main filter discharge outlet 100.Be in do not filter the fluid of side 66 therefore can be
First flowed under gravity in discharge outlet channel 104, discharge outlet channel construction sealing surface 92d and annular adapter tube 80 it
Between.In this way, fluid is flowed out from filter housings 12 from discharge outlet channel 104 via main filter discharge outlet 100.
By the reclining on sealing surface 92c of sealing element 94, main filter discharge outlet 100 is also opposite in drain location
It is sealed in prefilter discharge outlet 98.Annular adapter tube 80 determines size so over its length, that is, sealing element 82 is also in drain
It is hermetically sticked in position on annular adapter tube 80.It is possible thereby to which fluid is avoided to overflow to main filter from discharge outlet channel 104
The clean side 68 of element 24.
Only after not filtering fluid at least approximation outflow completely from discharge outlet channel 104 of side 66, filter plug-in
20 ability axially continue to lift from drain location, so that sealing element 82 and annular adapter tube 80 are detached from and rabbet.In this way, place
Fluid in the clean side 68 of main filter element 24 can flow into main filter discharge outlet 100 via discharge outlet channel 104,
If fluid is not extracted via Axial-running Out mouth 74.Purge sequence by the filter chamber 48,50 being arranged in design,
The clean side 66 that object enters main filter element 24 can be reliably avoided pollution when taking out or replacing filter plug-in 20.
Further, since two filter chambers 48,50 are respectively provided with the separated discharge outlet 98,100 of itself, filter head housings may be implemented
The quick and thorough emptying of body 12.
By filter plug-in 20 from filter canister 14 completely take out after, filter canister from case lid 18 disengage and
New filter plug-in 20 is fastened in case lid 18.Filter plug-in 20 is inserted into filter then along incoming direction 88
In tank 14 and it is transferred to and case lid 18 is tightened in filter canister 14 to be fitted into position (referring to Fig. 1).
Claims (14)
1. fluid filter (10), in particular for fuel or oil, comprising:
Filter housings (12),
The filter plug-in (20) of ground arrangement can be replaced in filter housings (12), and there are pre-filter element (22) and had
Have main filter element (24), they in filter housings (12) along filter housings (12) longitudinal axis (26) direction that
This stackedly arranges,
Wherein, filter housings (12) have the prefilter discharge outlet (98) for pre-filter element (22) and and pre-filtering
The main filter discharge outlet (100) for main filter element (24) of device discharge outlet (98) separate construction,
Wherein, prefilter discharge outlet (98) and main filter discharge outlet (100) are in filter plug-in (20) in filter housings
(12) prevented fluidly closing respectively in the running position in, and wherein, in the drain location of filter plug-in (20), in advance
Not the filtering of filter cell (22) side (60) and prefilter discharge outlet (98) fluidly connect and main filter element (24)
Side (66) of not filtering fluidly connected with main filter discharge outlet (100), filter plug-in (20) pass through filter plug-in (20)
The removal campaign being axially directed to from its running position can be transferred in drain location, wherein prefilter discharge outlet (98)
It is sealed relative to each other in the drain location of filter plug-in (20) with main filter discharge outlet (100), especially by filtering
Device plug-in unit (20) sealing against on filter housings (12).
2. fluid filter according to claim 1, which is characterized in that filter plug-in (20) is at it in filter housings
(12) it is hermetically sticked in the running position on filter housings (12), to by prefilter discharge outlet (98) and main mistake
Filter discharge outlet (100) is anti-fluidly to close.
3. fluid filter according to claim 1 or 2, which is characterized in that filter plug-in (20) is in its running position
Middle at least one each end-cap (36,38,40) using pre-filter element (22) and main filter element (24) hermetically pastes
It leans against on filter housings (12).
4. fluid filter according to any one of the preceding claims, which is characterized in that filter housings (12) have
Housing bottom (76), the housing bottom have the axial outlet (74) of the end side for fluid, and the axial outlet is being filtered
It is sealed in the drain location of device plug-in unit (20) relative to prefilter discharge outlet (98) and main filter discharge outlet (100).
5. fluid filter according to claim 4, which is characterized in that the axial outlet (74) of end side is by filter housings
(12) the annular adapter tube (80) being arranged in filter housings (12) surrounds interlocking, and filter plug-in (20) is in operating position
Set and drain location in, preferably by the end-cap (40) of pre-filter element or main filter element (22,24) hermetically
It sticks on the annular adapter tube (80) of filter housings (12).
6. fluid filter according to claim 4 or 5, which is characterized in that the axial outlet (74) of end side is in filter
In the running position of plug-in unit (20) fluidly with the clean side (62,68) of pre-filter element (22) or main filter element (24)
Connection.
7. fluid filter according to any one of the preceding claims, which is characterized in that filter housings (12) have
Filter canister (14), the filter canister have from the introducing of filter housings (12) opening (16) towards its housing bottom (76)
It is classified the interior diameter to attenuate.
8. fluid filter according to any one of the preceding claims, which is characterized in that in pre-filter element (22)
Arrangement one is used for the flow channel (52) of fluid between main filter element (24), and the flow channel is along longitudinal axis (26)
The direction end-cap (36,38) to correspond to each other the directly limit that passes through pre-filter element (22) and main filter element (24)
Boundary, wherein filter housings (12) have lateral outlet (58), and flow channel (52) is passed through in the lateral outlet.
9. fluid filter according to claim 8, which is characterized in that pre-filter element (22) and main filter element
(24) two end-caps (36,38) of direct limit flow channel (52) are configured integrally with each other.
10. fluid filter according to any one of the preceding claims, it is characterised in that one contains for separating in fluid
The water separative unit (70) of some water.
11. fluid filter according to claim 10, which is characterized in that water separative unit (70) is radially disposed at pre-
It can be passed through within filter cell (22) and main filter element (24) and in turn by fluid with water separative unit (70)
Filter element (22,24) flowing.
12. according to fluid filter described in claim 5 and 11, which is characterized in that filter housings (12) are in housing bottom
(76) there is the water out (78) of the water for isolating from fluid, the water out is by annular adapter tube (80) along radial direction on
Direction surrounds interlocking.
13. fluid filter according to any one of the preceding claims, which is characterized in that pre-filter element (22) and
Main filter element (24) is respectively configured to circular filter element, the filter medium (30a, 30b) especially folded with star
And it is coaxially arranged with the longitudinal axis (26) of filter housings (12).
14. the filter plug-in (20) of fluid filter (10) according to any one of the preceding claims has pre- mistake
Filter element (22) and have main filter element (24), they along filter housings (20) longitudinal axis (28) direction before and after
In turn arrange.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017001100.1 | 2017-02-07 | ||
| DE102017001100.1A DE102017001100A1 (en) | 2017-02-07 | 2017-02-07 | Fluid filter with a filter cartridge with a pre and a main filter element |
| PCT/EP2018/052969 WO2018146102A1 (en) | 2017-02-07 | 2018-02-06 | Fuel filter comprising a filter insert with a prefilter element and a main filter element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110234414A true CN110234414A (en) | 2019-09-13 |
| CN110234414B CN110234414B (en) | 2021-11-09 |
Family
ID=61226558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880010774.9A Active CN110234414B (en) | 2017-02-07 | 2018-02-06 | Fluid filter having a filter insert with a pre-filter element and a main filter element |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110234414B (en) |
| DE (2) | DE102017001100A1 (en) |
| WO (1) | WO2018146102A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114728231A (en) * | 2019-11-18 | 2022-07-08 | 曼·胡默尔有限公司 | Air filter with primary and secondary air outlets |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116688570A (en) * | 2023-08-07 | 2023-09-05 | 西安热工研究院有限公司 | Oil dehydration filter core and dewatering device |
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| CN114728231A (en) * | 2019-11-18 | 2022-07-08 | 曼·胡默尔有限公司 | Air filter with primary and secondary air outlets |
| CN114728231B (en) * | 2019-11-18 | 2024-01-23 | 曼·胡默尔有限公司 | Air filter with primary air outlet and secondary air outlet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110234414B (en) | 2021-11-09 |
| WO2018146102A1 (en) | 2018-08-16 |
| DE102017001100A1 (en) | 2018-08-09 |
| DE112018000711A5 (en) | 2019-11-14 |
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