WO2015004114A2 - Filter device for fluid and replaceable filter - Google Patents

Filter device for fluid and replaceable filter Download PDF

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Publication number
WO2015004114A2
WO2015004114A2 PCT/EP2014/064558 EP2014064558W WO2015004114A2 WO 2015004114 A2 WO2015004114 A2 WO 2015004114A2 EP 2014064558 W EP2014064558 W EP 2014064558W WO 2015004114 A2 WO2015004114 A2 WO 2015004114A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
connecting
particular
respect
head
Prior art date
Application number
PCT/EP2014/064558
Other languages
German (de)
French (fr)
Other versions
WO2015004114A3 (en
Inventor
Günter Jokschas
Ercan Sancar
Original Assignee
Mann+Hummel 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 DE102013011617.1 priority Critical
Priority to DE102013011616.3 priority
Priority to DE102013011620.1A priority patent/DE102013011620B4/en
Priority to DE102013011616.3A priority patent/DE102013011616B4/en
Priority to DE102013011620.1 priority
Priority to DE102013011617.1A priority patent/DE102013011617B4/en
Application filed by Mann+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Publication of WO2015004114A2 publication Critical patent/WO2015004114A2/en
Publication of WO2015004114A3 publication Critical patent/WO2015004114A3/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D27/00Cartridge filters of the throw-away type
    • B01D27/08Construction of the casing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/34Seals or gaskets for filtering elements
    • B01D2201/342Axial sealings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/34Seals or gaskets for filtering elements
    • B01D2201/347Radial sealings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/40Special measures for connecting different parts of the filter
    • B01D2201/4007Use of cam or ramp systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/40Special measures for connecting different parts of the filter
    • B01D2201/4084Snap or Seeger ring connecting means

Abstract

The invention relates to a filter device (10) for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular of an internal combustion engine, in particular of a motor vehicle, and to a replaceable filter (14) of the filter device (10). The filter device (10) comprises a filter head (12), which has at least one feed (16) and at least one discharge (18) for the fluid. The filter head (12) has a head-side connecting part (20) of a connecting device (22), which can be closed and detached by means of a plug-in and/or rotary movement with respect to a connecting axis (26), for the replaceable filter (14). The replaceable filter (14) comprises a filter-side connecting part (108) of the connecting device (22), which part can be detachably connected to the head-side connecting part (20). At least one first one of the connecting parts (20) can have at least two first ramp sections (42), which run in a helical manner with respect to the connecting axis (26). The first ramp sections (42) can overlap around at least part of their circumference with respect to the connecting axis (26) in such a manner that the first ramp sections (42) delimit a first helical ramp groove (48) on axially opposite sides with respect to the connecting axis (26). The second connecting part (108) can have at least two second ramp sections (106), which run in a helical manner with respect to the connecting axis (26) and of which at least one is guided at least partially in one of the first ramp grooves (48) in order to close the connecting device (22). The connecting device (22) can have at least one circumferential inner seal (92) with respect to the connecting axis (26), which seal seals off at least axially with respect to the connecting axis (26) between the filter head (12) and the replaceable filter (14) and can separate an untreated side (82) of the replaceable filter (14) from a clean side (78). The connecting device (22) can have at least one circumferential outer seal (128) with respect to the connecting axis (26), which seal seals off at least radially with respect to the connecting axis (26) between the filter head (12) and the replaceable filter (14) and can separate a fluid-conducting space (30) of the filter device (10) from the environment (132). The at least one outer seal (128) can be separate from the connecting points (20, 108).

Description

 description

 Filter device for fluid and replaceable filter

 Technical area

 The invention relates to a filter device for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular a motor vehicle, with a filter head, which at least one inlet, at least one outlet for the Fluid and a head-side connecting part of a connectable and detachable by means of a plug and / or rotary movement with respect. A connection axis connecting means for a replaceable filter, and the replaceable filter has a filter-side connecting part of the connecting device, which can be releasably connected to the head-side connecting part.

Furthermore, the invention relates to a replaceable filter of a filter device for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular a motor vehicle, a filter-side connecting part by means of a plug and / or rotary motion with respect to a connection axis closable and releasable connection means, which can be releasably connected to a head-side connecting part of a filter head of the filter device.

State of the art

From EP 0 830 885 A1 a filter device with a filter head and a filter cartridge is known. The filter cartridge is attached to the filter head. The filter head comprises a plurality of outwardly directed rising projections which form a first component of a bayonet-type connection. The rising projections are cooperative with similar projections of the filter cartridge for securing the filter cartridge to the filter head.

The invention has for its object to design a filter device and a replaceable filter of the type mentioned, in which / attachment of the replaceable filter can be simplified to the filter head. For putting in a stability of the connection of the replaceable filter is to be improved with the filter head.

Disclosure of the invention

This object is achieved with the filter device according to the invention in that at least a first of the connecting parts at least two. With respect to. The connecting axis helically extending first ramp sections at least partially overlap with respect to the connection axis such that they a helical first ramp groove with respect The second connecting part has at least two screw-like second ramp sections with respect to the connecting axis, at least one of which is guided at least partially in one of the first ramp grooves for closing the connecting device. The filter device is suitable for filtering fluid. In particular, liquids, in particular oil, fuel, urea solution, can be filtered with it. Alternatively, the filter device can also be used for filtering gases, in particular air, preferably combustion air of an internal combustion engine.

The filter device can be used in internal combustion engines of motor vehicles. It can also be used in other types of internal combustion engines, in particular industrial engines. The invention can also be used outside of internal combustion engines, in particular in motor vehicle technology.

The filter device has a filter head on which a replaceable filter can be mounted. The filter head has at least one inlet and at least one outlet for the fluid. The filter head may preferably be firmly fixed to a frame. The frame may in particular be part of the internal combustion engine and / or of the motor vehicle.

The filter head has a head-side connecting part of a connecting device for the replaceable filter. Advantageously, the filter head may comprise the first connection part.

The replaceable filter has a filter-side connecting part of the connecting device. Advantageously, the replaceable filter can have the second connecting part.

The second connection part can be releasably connected to the first connection part. The connecting device may advantageously be closable and detachable by means of a combined plug-in movement and rotational movement (plug-in and / or rotary movement) with respect to a connection axis. Combined push / turn connections can be closed and opened simply and quickly. Furthermore, they are robust against tensile loads. With the connecting device according to the invention can be easily realized as a quick release that can be easily and quickly closed and opened.

Advantageously, the first connecting part may have at least two first, in particular head-side, ramp sections, which run helically with respect to the connecting axis. The second connecting part may have at least two, with respect to the connecting axis helically extending second, in particular filter-side, ramp sections. By using the screw-like ramp sections, a space-optimized connection device can be realized. By virtue of the fact that each of the connecting parts has at least two respective ramp sections, when the connecting parts are plugged together with a plugging movement in the direction of the connecting axis, the ramp sections of the connecting parts can abut one another circumferentially at several points. In this way, the connecting parts can be placed evenly, in particular without tilting, to each other. In a subsequent rotational movement about the connecting axis, the ramp sections of the connecting parts can lead each other. In this way, a closing process can be performed easily and accurately. The first ramp sections may advantageously overlap at least partially. They can advantageously limit a helically extending first, in particular head-side, ramp groove with respect to the connection axis axially opposite sides. The at least one first ramp groove can advantageously have a U-shaped profile. In this way it can serve on three sides, namely a radially externa ßeren or inner side and two axial sides as a guide for the second ramp sections.

For closing the connecting device, at least one of the second ramp sections can be guided at least partially in one of the first ramp grooves. By means of the cooperation of the ramp sections with the ramp grooves, a precise, accurate and stable guidance in the axial, radial and circumferential direction can be achieved when closing the connection device. Within the first ramp grooves, the corresponding second ramp sections can also be kept stable. Thus, a connection can be realized, which is particularly resistant to tensile forces axially to the connection axis very strong.

By means of the plurality of ramp sections on each of the connecting parts, a plurality of helical gears can be realized. The connecting device can thus be closed with relatively small rotational movements. Advantageously, the connecting device can be closed by means of a rotary movement by a maximum of 360 °.

The slopes of the helical ramp sections can be uniform, in particular constant. You can also vary along the ramp sections.

The first ramp sections may be similar. However, different first ramp sections can also be used. Accordingly, the second ramp sections may be the same or different. The ramp sections in each case one of the connecting parts can begin in the same respect to the axis of connection axial height. But you can also start at different axial heights. The connecting parts can each be made of a single material or of a material mix. The connecting parts may advantageously be made of plastic, aluminum and / or sheet metal or comprise such a material. The two connecting parts may be made of the same material or different materials. The replaceable filter can advantageously have a round cross-section. The replaceable filter may advantageously be coaxial with a filter axis. The filter axis may advantageously coincide with the connection axis. The replaceable filter can advantageously have a filter element. The filter element may advantageously have a circumferentially closed filter medium. The filter medium can advantageously be folded in a star shape or a zigzag shape. The filter medium may advantageously be tightly connected to at least one end face with an end body, in particular an end plate. The filter element may advantageously be coaxial with the filter axis. The filter element can advantageously have a support body. The support body may advantageously be a central tube. The central tube can advantageously be located in an element interior of the filter element. The center tube may extend between the end bodies. Advantageously, the filter-side, in particular second, connecting part can be a supporting and / or supporting part of the replaceable filter, in particular of a housing of the replaceable filter.

Advantageously, the filter-side, in particular second, connecting part may be formed with a cover part for closing the housing of the replaceable filter. The filter-side connecting part may advantageously be integrally connected to the cover part. In this way, a cost of components can be reduced. The cover part can advantageously have at least one passage, in particular an inlet and / or an outlet, for the fluid into or out of the replaceable filter. The cover part can advantageously be fixed by means of a fixing element to a further housing part, in particular a filter pot, of the replaceable filter. The fixing element may advantageously have a sheet metal ring which can be connected to the further housing part. The sheet metal ring may advantageously be connected by means of a flared connection with the further housing part.

Advantageously, the connecting device may have at least one stop. With the at least one stop, it is possible to prevent the connecting direction from being moved beyond its closed position during the plugging and / or rotary movement. In this way, the closed position can be precisely defined. At least one of the stops may be located at the end of one of the ramp grooves. Thus, the ramp section guided in the corresponding ramp groove can abut against the stop with its correspondingly facing end, thus preventing further rotation.

Advantageously, both connecting parts can each have at least two ramp sections extending helically with respect to the connecting axis. The ramp sections of the same connection part may overlap at least partially with respect to the connection axis. The ramp sections of the same connection part can each delimit a helical ramp groove with respect to the connection axis axially opposite sides. For closing the connecting device, at least one of the ramp sections of each of the connecting parts can be guided at least partially in one of the ramp grooves of the respective other connecting part. Advantageously, the connecting device can be located between a raw side and a clean side of a filter element of the replaceable filter. The connecting device can thus advantageously be arranged within an outer seal, which can seal off the fluid-carrying space of the filter device to the environment. A holding function / connection function of the connection device and a sealing function between the fluid-carrying space of the filter device and the environment can thus be separated from one another. Thus, the holding function / connection function and the sealing function can be optimized in each case, in particular independently of each other. In an advantageous embodiment, at least one of the first ramp sections may have an insertion ramp surface outside the corresponding first ramp groove, which may transition into the corresponding first ramp groove. The Einführrampenfläche can serve as an insertion aid to achieve a precise introduction of the respective second ramp sections in the corresponding Rampennuten.

At least one of the insertion ramp surfaces can advantageously extend helically with respect to the connection axis. In this way, a guide of the corresponding second ramp sections in the plug and / or rotary movement for closing / opening of the connecting device can be improved.

Advantageously, the at least one Einführrampenfläche steplessly pass into the corresponding Rampennut. In this way a uniform guidance can be achieved.

Advantageously, the at least one insertion ramp surface can be arranged on the side of the at least one first ramp section which axially faces the second connecting part.

Advantageously, at least two of the first ramp sections may be circumferentially offset from one another at least in sections. In this way, the second ramp sections when mating the connecting parts in each rotational orientation of the replaceable filter with respect to. The filter head are each applied to a corresponding Einführrampenfläche. Thus, a guidance of the ramp sections can be achieved in each rotational position of the replaceable filter relative to the filter head. In a further advantageous embodiment, at least one of the first ramp sections may extend over only a part of the circumference with respect to the connection axis. In this way, the connecting device can be closed or opened with a rotation of the replaceable filter by a maximum of 360 ° relative to the filter head. In this way, the connecting device can be opened and closed quickly.

In a further advantageous embodiment, at least the first ramp sections each extend over a same circumferential angle. The connecting device can thus have a symmetry with respect to the connection axis. In this way, the replaceable filter can be mounted in several rotational orientations on the filter head. When closing the connecting device, it is easier to find a starting position from which a controlled closure of the connecting device is possible. In this way, the cultivation of the replaceable filter can be simplified.

In a further advantageous embodiment, a circumferential angle over which each of the ramp grooves extends circumferentially may correspond approximately to an angle of 360 ° divided by the number of first ramp sections. Thus, the symmetry of the connection device can be improved. The installation of the replaceable filter can be further simplified. Furthermore, the circumferential Elongation of the Rampennuten be optimized in relation to the overall size of the connecting device. The connecting device can be simplified as a whole. Furthermore, the guidance and the holding of the corresponding second ramp sections in the assembly of the connecting device can be improved.

Advantageously, three first, in particular head-side, ramp sections can be provided in each case. Advantageously, three second, in particular filter-side, ramp sections can be provided in each case. With three ramp sections, the second connection part can be easily and precisely created, guided and held.

The second ramp sections may advantageously each extend over the same circumferential angle as the ramp grooves. In this way, the second ramp sections can each be completely immersed in the corresponding ramp grooves. The ramp grooves can realize a force transmission over their entire circumferential extent with the second ramp sections. In this way, the mechanical strength of the connecting device can be improved.

When using three first ramp sections, the corresponding ramp grooves may advantageously each extend over a circumferential angle of approximately between 100 ° and 140 °, preferably 120 °. The ramp grooves can thus embrace the entire circumference. In this way, the connecting parts can be connected along the entire circumference.

Advantageously, a circumferential angle over which each of the insertion ramp surfaces extends may correspond approximately to an angle of 360 ° divided by the number of first ramp sections. Advantageously, the second ramp sections may each extend over the same circumferential angle as the Einführrampenflächen the first ramp sections. Thus, the second ramp sections can each be uniformly and precisely applied to the corresponding insertion ramp surfaces and guided there.

When using three first ramp sections, the three second ramp sections can advantageously each extend over a circumferential angle of approximately between 100 ° and 140 °, preferably 120 °.

Advantageously, the first ramp sections may circumferentially delimit the insertion ramp surface in half and the ramp groove in half. In this way, the second ramp sections can rest and be guided uniformly on the insertion ramp surfaces. Further, the second ramp portions may be kept in half in the ramp grooves approximately over their entire circumferential extent. Thus, a stable, in particular zugstabile, connection can be achieved.

In a connecting device with three ramp sections on the head side and on the filter side, a very large bearing surface can be realized. In this way, high mechanical loads, in particular tensile loads, can be compensated. In a further advantageous embodiment, the ramp grooves may adjoin one another circumferentially with respect to the connection axis. The ramp grooves can thus be arranged one behind the other with respect to the rotational movement for closing / opening the connecting device. The Rampennuten can be arranged without circumferential overlap. Thus, the Rampennuten can save space on the peripheral sides of the first connection part.

Advantageously, if necessary, the insertion ramp surfaces can adjoin one another circumferentially with respect to the connection axis. The insertion ramp surfaces may be arranged without circumferential overlap.

In a further advantageous embodiment, the connecting device may comprise at least one locking device with at least one head-side locking part and at least one filter-side locking part, which can enter into an unlockable connection with each other in the closed position of the connecting device. In this way, the closed connection device can be mechanically secured at least in its closed state. Thus it can be prevented that the connecting device can open uncontrollably. The closing and / or opening of the unlockable connection can advantageously be possible without the use of a separate tool.

The unlockable connection may advantageously be a latching connection. A locking connection can be easily closed and opened. The locking connection can advantageously realize a mechanical resistance, which must be overcome to open the unlockable connection. In this way it can be prevented that the unlockable connection opens uncontrollably.

The unlockable connection, in particular latching connection, can advantageously generate a signal which can be detected acoustically and / or tactually during locking. In this way, the closed state of the connection device can be easily detected.

At least one of the locking parts, in particular at least one of the filter-side locking parts, may advantageously have a spring arm. The spring arm can be advantageous with respect to the connecting axis resiliently radially Shen Shen and / or bent radially inward. At a free end of the spring arm may advantageously be arranged a detent or a detent receptacle. The at least one corresponding other locking part, in particular at least one of the head-side locking parts, may advantageously according to a locking receptacle or a latching nose. The latching receptacle or the latching lug of the spring arm can advantageously lock in the locking position of the unlockable connection with the latching lug or latching receptacle of the other latching part. The at least one other locking part may advantageously have a guide surface. The guide surface can increase in a ramp-like manner in the axial direction. At the end of the guide surface may possibly be the locking receptacle or latch. During the rotational movement for closing the connecting device, the spring arm of the one locking part, in particular possibly the latch nose, can be guided on the guide surface of the other locking part.

The at least one spring arm can advantageously be arranged on the side of the replaceable filter. In this way, the spring arm can be replaced together with the replaceable filter. Thus, fatigue on the movable spring arm, which can occur by repeated opening and closing of the connecting device can be avoided. The other locking part can advantageously be arranged on the side of the filter head.

The spring arm of a connecting part may advantageously extend counter to a closing direction of rotation of the replaceable filter relative to the filter head.

The spring arm can advantageously have a bias which is directed radially inwardly with respect to the connection axis. The other locking member may advantageously be arranged at a respect to the connection axis radially externa ßeren peripheral side of the corresponding connection part. The unlockable connection can advantageously be located outside of an interior of the replaceable filter. It may advantageously be located on the outside of a cover body, in particular a filter cover, of the replaceable filter. It can be visible from the outside at the separate from the filter head replaceable filter. Thus, it can be detected before assembly of the replaceable filter whether the at least one filter-side locking part, in particular the spring arm, is functional, in particular undamaged. The at least one filter-side locking part, in particular the at least one spring arm, can advantageously project beyond the cover body in the axial direction. The filter-side locking part may advantageously be located in circumferential extension of circumferentially extending webs. In this way, the filter-side locking part can be protected. Advantageously, the connecting device can have at least one inner seal which is circumferential with respect to the connecting axis and which seals between the filter head and the replaceable filter at least axially with respect to the connecting axis and can separate a raw side of the replaceable filter from a clean side. The inner seal may advantageously be a ring seal. It can have a round or square, in particular rectangular, profile. The profile can be flat.

Advantageously, the connecting device may have at least one circumferential seal with respect to the connecting axis, which seal at least radially with respect to the connecting axis between the filter head and the replaceable filter and can separate a fluid-carrying space of the filter device from the environment. With the outer seal, the fluid-carrying spaces, in particular spaces between the replaceable filter and the filter head, can be tightly separated from the environment. There- at the outer seal can be on the raw side or the clean side of the filter element of the replaceable filter. This depends on the direction of flow of the fluid through the replaceable filter.

In a further advantageous embodiment, a course of the ramp sections may be adapted to an arrangement of a circumferential seal of the connection device that the outside seal upon closing of the connection means by means of a plug and / or rotary movement during an early closing phase, in particular, in which the second ramp sections are located in a respective initial region of the ramp grooves, axially outside one of two sealing sections, in particular a cylindrical Au ßendichtabschnitts, between which it seals in the closed position of the connecting means in the radial direction, and during a later closing phase in which engage the second ramp sections, in particular in a respective end region of the Rampennuten, is pressed between the two sealing portions. In this way, the Au ßendichtung in the closing phase in which the ramp sections au ßerhalb or in the initial region of the Rampennuten be relieved. A load, in particular compression, of the external sealing takes place only in the later closing phase, in which the ramp sections engage in the respective ramp grooves, in particular in their end regions. In this way, a circumferential movement, in particular a rubbing of the Au ßendichtung, between the sealing portions, in particular the head-side Au ßendichtabschnitt and the filter-side sealing groove can be minimized. The mechanical load on the outer seal, in particular the wear, can thus be reduced. Advantageously, the gradients and / or the corresponding circumferential expansions of the Rampennuten and / or possibly the Einführrampenflächen to the arrangement, in particular position, the Au can be adjusted ßendichtung.

Advantageously, the earlier closing phase can take place with the entry of the second ramp sections into the ramp grooves. A first angle of rotation in the rotation of the replaceable filter relative to the filter head between the entry of the second ramp sections into the ramp grooves and the transition from the early closing phase to the late closing phase can advantageously be about a second angle of rotation between the transition from the earlier closing phase to the later closing phase and the conclusion of the later closing phase Closing phase correspond.

When using three ramp sections can advantageously the compression of the Au ßendichtung after the entry of the second ramp sections in the Rampennuten start after a rotation of the replaceable filter by about 60 °. After turning the replaceable filter by a further 60 °, the outer seal can be completely compressed.

The object is further achieved by the replaceable filter according to the invention in that at least a first of the connecting parts at least two, with respect to the connecting axis helically extending first ramp sections, which overlap. Compared to the connecting axis at least partially such that they have a helical first ramp groove with respect to the connecting axis limit axially opposite sides, and the second connecting part at least two with respect to the connecting axis helically extending second ramp sections, of which Closing the connecting device at least one can be performed at least partially in one of the first Rampennuten.

Secondly, the object is achieved with the filter device according to the invention in that the connecting device has at least one inner seal which is circumferential with respect to the connecting axis and which seals between the filter head and the replaceable filter at least axially with respect to the connecting axis and can separate a raw side of the replaceable filter from a clean side ,

In an advantageous embodiment, the inner seal may be a ring seal.

In a further advantageous embodiment, the inner seal may have a rectangular profile. In this way, they can rest on axially opposite sides in each case flat against corresponding sealing surfaces of the filter head and the replaceable filter. The sealing effect can be improved. Furthermore, such a friction between the inner seal and the corresponding sealing surfaces can be increased.

The inner seal can also act as anti-rotation. After pressing the inner seal, rotation of the replaceable filter relative to the filter head against the closing direction of rotation can be made more difficult due to the friction. This reduces the likelihood that the connection device will open uncontrollably.

Alternatively, the ring seal may also have a round or a different angular profile. An extension of the profile can be greater in the axial direction than in the radial direction. Alternatively, the profile can be flat.

The inner seal can advantageously contribute to an axial tension of the connecting device. In this way, vibrations between the replaceable filter and the filter head can be damped. Any noise, in particular rattling, can thus be reduced. In a further advantageous embodiment, the inner seal can be arranged coaxially to the connection axis. The axial sealing effect can be improved when closing the connecting device by a corresponding pressing axially to the connecting axis.

In a further advantageous embodiment, the inner seal can be connected to the replaceable filter. It can advantageously be attached to the replaceable filter. It can advantageously be arranged in a corresponding sealing groove on the replaceable filter. In this way, it can simply be preassembled captive.

In a further advantageous embodiment, the inner seal can be arranged on an end body, in particular an end disk, of a filter element, in particular of a round filter element, of the replaceable filter. In a further advantageous embodiment, the inner seal can surround a passage opening to an element interior of a filter element of the replaceable filter. The inner seal can thus easily separate the element interior from an outer surface surrounding the filter element. The element interior can be located on the clean side or the raw side of the filter element. Accordingly, the raw side or the clean side can be located on the outside of the filter element.

The passage opening may advantageously be coaxial with the connection axis. It may advantageously be connected to a connection channel. The connecting channel may advantageously extend at least in sections coaxially with the connecting axis. The connecting channel may be part of the filter head and / or the head-side connecting part. The connecting channel may advantageously be connected to the at least one inlet or the at least one outlet for the fluid. This depends on whether the filter element from radially au Shen radially inward or vice versa flowed through.

On the side of the filter head may advantageously be arranged a sealing surface for the inner seal. The sealing surface may advantageously be coaxial with the connecting axis. At the sealing surface, the inner seal may lie flat and / or circumferentially closed. The sealing surface may advantageously surround the connecting channel.

In a further advantageous embodiment, the inner seal may be coaxial with a central tube of the replaceable filter. In this way, the inner seal can be stably supported in the axial direction against the center tube. Advantageously, at least a first of the connecting parts at least two with respect to the connecting axis helically extending first ramp sections and the second connecting part may have at least two with respect to the connecting axis helically extending second ramp sections, which may be performed at least to close the connecting device to each other.

The object is further achieved, secondly, with the replaceable filter according to the invention in that the connecting device on the replaceable filter has at least one inner seal which surrounds the connecting axis and at least axially seals between the filter head and the replaceable filter and separates a raw side of the replaceable filter from a clean side can.

Thirdly, the object is achieved with the filter device according to the invention in that the connecting device has at least one circumferential seal with respect to the connecting axis which at least radially seals the connection axis between the filter head and the replaceable filter and can separate a fluid-carrying space of the filter device from the environment wherein the at least one Au seal is separated from the connecting parts. With the at least one Au ßendichtung the fluid-carrying spaces, in particular spaces between the replaceable filter and the filter head, are sealed from the environment. In this case, the at least one Au ßendichtung can be located on the raw side or the clean side of the filter element of the replaceable filter. This depends on the direction of flow of the fluid through the replaceable filter.

According to the invention, the at least one Au ßendichtung is separated from the connecting parts. The at least one Au ßendichtung is therefore not directly connected to one of the connecting parts. At least one further intermediate mechanical component, in particular a component of the filter head or a lid body of the replaceable filter, is arranged between the at least one outer seal and the connecting parts. The at least one Au ßendichtung and the connecting parts are therefore separated by the at least one intermediate component. The at least one intermediate component effects a mechanical coupling between the at least one outer seal and at least one of the connecting parts. At the same time, the at least one intermediate component makes it possible to increase the design freedom of both the connecting parts and the at least one outer seal. In this way, a sealing function can be optimized separately from a connection function. In particular, structural measures for the compensation of mechanical loads which act on the at least one Au ßendichtung and on the at least one intermediate component in each case, each separately optimized. In an advantageous embodiment, the at least one Au ßendichtung respect. The connecting axis in the radial direction, in particular only in the radial direction, seal. In this way, any compression of the at least one outer seal may be substantially independent of a degree of closure of the connector. A mechanical load on the Au ßendichtung can be reduced.

In a further advantageous embodiment, the at least one Au ßendichtung be an O-ring seal. Alternatively, a square, in particular flat, seal can be used. An O-ring seal has the advantage that it can roll in a plugging movement in the direction of the connecting axis easier on the corresponding radially inner and / or radially externa ßeren sealing surfaces. With the O-ring seal, the radial sealing effect can be better defined and / or adjusted, as with a flat gasket.

In a further advantageous embodiment, the at least one Au ßendichtung be attached to the side of the replaceable filter. It can advantageously rest radially inward on a corresponding surface of the replaceable filter. Alternatively, it may also lie radially outside on a corresponding surface of the replaceable filter.

In a further advantageous embodiment, a corresponding sealing surface may be arranged on the side of the filter head, with which the at least one Au can seal sealingly cooperate. The sealing surface may be radially outside or inside the outer seal. In a further advantageous embodiment, the sealing surface may be arranged on a corresponding outer sealing portion on the side of the filter head. The Au ßendichtabschnitt can advantageously be cylindrical. The outer sealing portion may advantageously be coaxial with the connecting axis. A diameter of the sealing surface on the side facing the Au ßendichtung may be in the axial direction to the front side, from which the Au ßendichtung when connecting the connecting device is moved to the sealing surface, expand. In this way, an insertion or plugging the Au can be simplified ßendichtung on the sealing surface. Furthermore, the Au can seal during the closing process of the connecting device continuously, in particular uniformly compressed.

In a further advantageous embodiment, the at least one Au ßendichtung be arranged in a seal holder. The seal receiver can advantageously be located on the side of the replaceable filter. The seal receiver can advantageously be a sealing groove. The sealing groove may advantageously be radially outward or open radially inward. The sealing groove can advantageously be arranged on a cover element of the replaceable filter. The cover element may advantageously be annular. Advantageously, the lid member may be a sheet metal ring. The sealing groove can advantageously be realized by crimping the sheet metal ring. The cover element can advantageously be connected to a housing element, in particular a housing pot, of the replaceable filter, in particular by means of a flanging.

On the side facing the open side of the sealing groove, the cover element can have a receptacle, in particular an annular groove, for the outer sealing section of the filter head.

The outer seal may additionally or alternatively also seal axially.

Thirdly, the object is further achieved with the replaceable filter according to the invention in that the connecting device has at least one circumferential seal with respect to the connecting axis which at least radially seals the connecting axis between the filter head and the replaceable filter and separates a fluid-carrying chamber of the filter device from the surroundings can, wherein the at least one Au ßendichtung is separated from the connecting parts.

Incidentally, the advantages and features shown in connection with the filter devices according to the invention and / or the exchangeable filters according to the invention and their respective advantageous embodiments apply mutatis mutandis and vice versa. The individual features and advantages can, of course, be combined with one another, whereby further advantageous effects can be achieved that go beyond the sum of the individual effects.

Brief description of the drawings

Further advantages, features and details of the invention will become apparent from the following description in which an embodiment of the invention with reference to the drawings is explained in more detail. Those skilled in the art will be aware of the combination, in the drawing, description and claims Expediently consider features individually and summarize meaningful further combinations. It show schematically

 1 shows a longitudinal section of a filter system for engine oil of an internal combustion engine of a motor vehicle with a filter head to which a replaceable filter is attached by means of a releasable connection device;

 FIG. 2 shows a detailed view of another longitudinal section of the filter system from FIG. 1 in the region of the connecting device;

Figure 3 is an isometric view of the filter head of Figures 1 and 2 without the replaceable filter, looking at the connection side;

Figure 4 is a plan view of the connecting side of the filter head of Figures 1 to 3, without

 AC filter;

 Figure 5 is an isometric view of the replaceable filter of Figures 1 and 2, looking at the connection side;

 Figure 6 is a plan view of the connection side of the replaceable filter of Figures 1, 2 and 5. In the figures, the same components with the same reference numerals.

Embodiment (s) of the invention

 FIGS. 1 to 6 show a filter system 10 for engine oil of an internal combustion engine of a motor vehicle in different perspectives, sections and detailed views.

The filter system 10 comprises a filter head 12 to which a replaceable filter 14 is releasably attached. The filter head 12 is made of metal. The filter head 12 is fixedly connected to the internal combustion engine and serves as a connection part for the replaceable filter 14. The filter head 12 comprises an inlet 16 and an outlet 1 8 for the engine oil. The inlet 16 and the outlet 18 are connected here with not further interesting manner with corresponding oil lines of the internal combustion engine.

Furthermore, the filter head 12 has a head-side connecting part 20 of a total of 22 designated, releasable connection means for connecting the replaceable filter 14 with the filter head 12. The head-side connecting part 20 is made of metal. The head-side connecting part 20 is screwed into a hollow connecting cylinder 24, which is integrally connected to the filter head 12. The connecting cylinder 24 has an internal thread. The connecting cylinder 24 is coaxial with a filter axis 26. The head-side connecting part 20 may be screwed instead of a separate component to the filter head 12 and integrally connected thereto. Whenever "axial", "radial", "coaxial" or "circumferential" is used, this refers to the filter axis 26 unless otherwise stated.

The head-side connecting part 20 has a cylindrical connecting sleeve portion 28 with a matching to the internal thread of the connecting cylinder 24 Au ßengewinde. When attached replaceable filter 14 of the connecting sleeve portion 28 is also coaxial with the filter axis 26th An interior of the ferrule portion 28 is connected to the outlet 18 of the filter head 12. At its radially inner peripheral side of the connecting sleeve portion 28 is simply stepped. The inner cross section of the connecting sleeve section 28 on the extended, the replaceable filter 14 side facing, is approximately hexagonal. The corners are slightly rounded. The inner cross section of an imaginary inscribed circle on the side of the outlet 18 is smaller than the inner cross section of the connecting sleeve section 28 on the side facing the replaceable filter 14.

The connecting cylinder 24 is surrounded radially outside of an inlet annulus 30 of the filter head 12. An end of the connecting sleeve section 28 facing the replaceable filter 14 forms an annular coaxial sealing surface 32.

The connecting sleeve portion 28 of the head-side connecting part 20 is radially au Shen surrounded by an outer cylindrical portion 34. The peripheral wall of the Au ßenzylinderabschnitts 34 has approximately the shape of a hollow circular cylinder. The Au ßenzylinderabschnitt 34 is coaxial with the filter axis 26. It extends in the axial direction approximately from the axial center plane of the connecting sleeve portion 28 in the direction of the replaceable filter 14 facing end side of the connecting sleeve portion 28. On its side facing the filter head 12, the outer cylinder section 34 is connected in one piece with the radially outer peripheral side of the connecting sleeve section 28 via a radial annular disk section 36.

In an annular space 38 between the radially inner peripheral side of the Au ßenzylinderabschnitts 34 and the radially outer ßeren peripheral side of the connecting sleeve portion 28 a plurality of Radialverbin- walls 40 is arranged. The radial connecting walls 40 are each in one piece radially au Shen with the outer cylinder portion 34, radially inwardly connected to the ferrule portion 28 and with an underside of the radial annular disc portion 36. The radial connecting walls 40 each extend radially and axially. They are arranged approximately in a star shape in the direction of the filter axis 26. At the radially externa ßeren peripheral side of the Au ßenzylinderabschnitts 34 a total of three head-side ramp sections 42 are arranged. The head-side ramp sections 42 are identical with respect to their expansions and shape. The head-side ramp sections 42 each extend with respect to. The filter axis 26 helically. A slope direction of the head-side ramp sections 42 corresponds to a known right-hand thread.

A closing direction of rotation 43 of the replaceable filter 14 relative to the filter head 12, which is indicated in Figures 1, 2, 4 and 6 by an arrow, for closing the connecting device 22 corresponds to that of a known right-hand thread. The closing direction of rotation 43 extends from the replaceable filter 14 on the filter head 12 in the clockwise direction as viewed in the axial direction. The head-side ramp sections 42 each extend approximately over a circumferential angle of 240 °. The head-side ramp sections 42 are arranged offset to one another. In each case two of the head-side ramp sections 42 each overlap over half of their circumferential expansions. The beginnings of the head-side ramp sections 42 are each on the replaceable filter 14 facing the free end of the Au ßenzylinderabschnitts 34. The ends of the head-side ramp sections 42 are circumferentially respectively where the opposite direction of closing 43 viewed over the next head-end ramp section 42 begins.

Each head-side ramp section 42 consists of two areas viewed circumferentially. A first region with a respective insertion ramp surface 44 extends circumferentially from the beginning of a respective head-side ramp section 42 to the beginning of the next head-end ramp section 42, as viewed opposite to the closing direction of rotation 43. The insertion ramp surfaces 44 are freely accessible in the axial direction when viewed from the interchangeable filter 14. They each extend in the radial direction and helically in the circumferential direction. The insertion ramp surfaces 44 each extend in the radial direction over the entire radial wall thickness of the outer cylinder section 34.

The respective insertion ramp surface 44 is adjoined in each case by an area with a groove ramp surface 46. The circumferential extent of the insertion ramp surface 44 corresponds to the circumferential extent of the Nutrampenflächen 46. They each extend over a circumferential angle of 120 °. The Nutrampenflächen 46 are located radially au Shen on the Au ßenzylinderabschnitt 34. The areas with the Nutrampenflächen 46 overlap each with the counter to the closing direction of rotation 43 following head-end ramp sections 42. In each case, the Nutrampenfläche 46 of the viewed in the closing direction 43 front head-side ramp section 42 overlaps with the Einführrampenfläche 44 of the following head-side ramp portion 42. The Nutrampenflächen 46 extend in the radial direction about half the radial wall thickness of the Au ßenzylinderabschnitts 34. The Einführrampenflächen 44 go continuously into the Nutrampenflächen 46 on. The Nutrampenflächen 46 have the same pitch as the Einführrampenflächen 44. The Nutrampenflächen 46 each begin in the circumferential direction at the level of the beginning of the respective clockwise subsequent head-side ramp portion 42. The Nutrampenflächen 46 ends at the level of the beginning of the circumference respectively overhead head ramp portion 42nd

The Nutrampenflächen 46 define a respective ramp groove 48 on one axial side. On the axially opposite side, the ramp grooves 48 are each bounded by an insertion ramp surface 42 axially opposite side of the corresponding portion of the subsequent head-side Rampab- section 42. The ramp grooves 48 have a circumferentially constant axial extent. Their radial extent is also constant in the circumferential direction.

To the radially externa ßere peripheral side of the Au ßenzylinderabschnitts 34 three locking elements 50 of a generally designated 52 locking means of the connecting device 22 are arranged. The latching elements 50 are each integrally connected to the outer cylinder section 34. The locking elements te 50 are radial elevations. The latching elements 50 are arranged in the axial direction approximately at the level of the radial annular disk section 36.

The locking elements 50 are each about wedge-like. In a rear area with respect to the closing direction of rotation 43 of the connecting device 22, each locking element 50 has a rising guide surface 54. The guide surface 54 is located on the radially externa ßeren peripheral side of the locking elements 50. At the end of the guide surface 54 each has a locking recess 56 connects. The radial extent of the latching elements 50 in the region of the latching depression 54 is smaller than in the region of the end of the guide surface 54 which is elevated in the radial direction. Each latching element 50 extends circumferentially over a circumferential angle of approximately 25 ° to 30 °. The transition from the guide surface 54 to the corresponding detent recess 56 is circumferentially approximately at a level with the end of one of the head-side ramp sections 42 and the beginning of the opposite according to the closing direction 43 considered next head-end ramp portion 42. The connecting cylinder 24 and the head-side connecting part 20 are surrounded by a coaxial circular cylindrical Au ßendichtabschnitt 58. The free end face of the Au ßendichtabschnitts 58 faces the replaceable filter 14. Its inner cross-section increases towards its free end face. The radially inner peripheral side of the Au ßendichtabschnitts 58 forms a Au ßendichtfläche 60. Further, the filter cup 12 has a Au ßenkragen 62 which extends in sections coaxially to the filter axis 26 and the Au ßendichtabschnitt 58 radially outwardly surrounds part of the circumference.

The replaceable filter 14 is designed overall as a round filter. It is substantially coaxial with the filter axis 26. The replaceable filter 14 has a filter cup 64, in the open side of a filter cover 66 is attached. The filter bowl 64 has an outwardly arched filter bottom 68th

In the filter bowl 64, a coaxial filter element 70 is arranged. The filter element 70 has a zigzag-folded, circumferentially closed filter medium 72. At its end faces, the filter medium 72 is in each case tightly connected to a connection end disk 74, in the top of FIG. 1, and a counter end disk 76, below.

The Anschlussendscheibe 74 is shown in detail in Figures 2, 5 and 6. It is located on the side of the filter element 70 facing the filter cover 66. The filter medium 72 surrounds an element interior 78 of the filter element 70. The element interior 78 is located on a clean side of the filter element 70.

The end disc 76 closes the element interior 78 on the filter bottom 68 facing the end face of the filter element 70. On the filter bottom 78 facing Au ßenseite the rear end disc 76 is based on several spring elements 80 from the other hand on the spring base 68 abut zen. The filter element 70 is surrounded radially on the outside by a tube-side annular space 82 which is delimited by the radially inner peripheral side of the filter cup 64.

In the element interior 78, a coaxial center pipe 84 extends between the end-stop disk 76 and the terminal end disk 74. A peripheral wall of the center pipe 84 is permeable to the engine oil. A radially inner peripheral side, namely radially inner fold edges of the filter medium 72 is supported on the radially externa ßeren peripheral side of the center tube 84 from.

The terminal end disk 74 has a coaxial exhaust port 86 for the filtered engine oil. On the axially outer side of the Anschlußendscheibe 74 integrally a coaxial seal receiving cylinder 88 is arranged. A radially inner peripheral side of the seal receiving cylinder 88 is stepped. On its end face remote from the element interior 78, the seal receiving cylinder 88 has a coaxial sealing groove 90 with an annular inner seal 92. The inner seal 92 is designed as a flat gasket. When the replaceable filter 14 is mounted, the inner seal 92 lies with its side facing away from the element interior 78 tight against the sealing surface 32 of the connecting sleeve section 28 of the head-side connecting part 20. The inner seal 92 acts in the axial direction. The inner seal 92 separates a raw side of the filter element 70, radially outside of the seal receiving cylinder 88, tightly from a clean side, radially inside the seal receiving cylinder 88. The smallest inner radius of the seal receiving cylinder 88 is approximately equal to the inner radius of an imaginary inscribed circle of the connecting sleeve section 28 on its cross-sectional widened side.

Radially outside the seal receiving cylinder 88 is supported with support members 94 against the radially extending portion of the terminal end plate 74. The support members 94 each extend radially and axially. On the radially inner peripheral side of the seal receiving portion 88, inner support members 96 are further provided, which supports a ring portion of the seal receiving cylinder 88, which surrounds the seal groove 90 radially inwardly.

The filter cover 66 has the shape of a ring with an approximately rectangular profile. The filter cover 66 is made of metal. The filter cover 66 has a receiving opening 98 coaxial with the filter axis 26 for receiving the Au ßenzylinderabschnitts 34 of the head-side connecting part 20. Within the radially externa ßeren edge of the filter cover 66 is on the outside of the filter bottom 68 Au outside a coaxial annular groove 100 arranged for receiving a cover sheet ring 102. Radially between the annular groove 100 and the receiving opening 98 a plurality of continuous inlet channels 104 is arranged. The inlet channels 104 each extend parallel to the filter axis 46. They connect the inlet ring space 30 of the filter head 12 with the interior of the filter cup 64, or the tube-side annular space 82.

On the radially inner peripheral side of the filter cover 66, three filter-side ramp sections 106 are arranged. The filter-side ramp sections 106 each extend radially inward from the radially inner peripheral side of the filter cover 66. The filter-side ramp sections 106 are substantially identical in their extent and their circumferential course. The filter-side ramp sections 106 each extend helically, analogously to the head-side ramp sections 42 with respect to the filter axis 26. Their slopes correspond to those of the head-side ramp sections 42. The filter-side ramp sections 106 each extend with respect to the filter axis 26 over a circumferential angle of 120 °. The filter-side ramp sections 106 do not overlap. The beginnings of the filter-side ramp section 106 are located on the axial side facing away from the interior of the filter cup 64. Viewed circumferentially, the beginning of each filter-side ramp section 106 is at a level with the end of the filter-side ramp section 106 preceding in the closing direction 43. The axial heights of the filter-side ramp sections 106 are circumferentially constant. They correspond to the axial heights of the ramp grooves 48 of the head-side ramp sections 42. The filter-side ramp sections 106 and the receiving opening 98 together form a filter-side connecting part 108 of the connecting device 22.

At the interior of the filter cup 64 facing away from Au ßenseite the filter cover 66 three detent spring elements 1 10 are arranged. The detent spring elements 1 10 are parts of the locking device 52. The detent spring elements 1 10 each have a holding portion 1 12. The holding portion 1 12 is radially connected between the annular groove 100 and the receiving opening 98 integrally with the filter cover 66. A respective spring arm portion 1 14 of the detent spring elements 1 10 is integrally connected to the holding portion 1 12. The Federarmabschnitte 1 14 are viewed in the closing direction of rotation 43 respectively at the front of the holding sections 1 12. The Federarmabschnitte 1 14 extend circumferentially over a circumferential angle of about 30 °. The spring arm sections 1 14 can be bent resiliently outward on the retaining sections 1 12 in the radial direction. At their holding portions 1 12 respectively facing away from the free end of the spring arm sections 1 14 go into a locking lug 1 1 6 over. The locking lugs 1 16 extend radially inward. The latching lug 1 16 are each located on the same peripheral side as a beginning of one of the filter-side latching sections 106 and one end of the respective previous filter-side ramp section 106.

The cover plate ring 102 has a multi-curved profile. With its radially externa ßeren peripheral side, it is connected by means of a flare 120 fixed to a free edge of the filter bowl 64. Radially inside the flare connection 120, the cover plate ring 102 has an approximately right-angled, circumferentially closed first bending section. In the region of the first bending section, the cover plate ring 102 forms on its side facing the filter cover 66 a collar 122 which engages in the annular groove 100 of the filter cover 66.

On the side facing away from the filter cover 66 Au ßenseite the cover sheet metal ring 102 of the collar 122 realized a receiving groove 124 for the Au ßendichtabschnitt 58 of the filter head 12th

The radially inner peripheral side of the cover sheet metal ring 102 is bent into a U-shaped profile, the opening of which points radially outward Shen. The U-shaped profile includes a coaxial, circumferentially closed sealing groove 126. In the seal groove 126, an outer seal 128 is disposed. The Au ßendichtung 128 is an O-ring seal. The outer seal 128 acts in the radial direction. At its inner edge facing away axially from the filter cover 66, the cover plate ring 102 has a plurality of notches 130 distributed over its circumference.

When the replaceable filter 14 is mounted, the outer seal 128 bears tightly against the outer sealing surface 60 of the outer sealing portion 58. The Au ßendichtung 128 separates the raw side of the filter element 70, respectively the inlet annulus 30, from the environment 132nd

For connection to the filter head 12, the replaceable filter 14 with the filter cover 66 first moves axially to a connecting axis, which in the exemplary embodiment coincides with the filter axis 26, initially in a plugging movement to the head-side connecting part 20 of the filter head 12. The Au ßenzylinderabschnitt 34 is inserted into the receiving opening 98 of the filter cover 66 until the filter-side ramp sections 106 axially abut the Einführrampenflächen 44 of the head-side ramp sections 42. The Au ßendichtabschnitt 58 is located axially away from the outer seal 28th

With a rotational movement of the change-over cylinder 14 in the closing direction of rotation 43, the filter-side connecting part 108 is screwed into the head-side connecting part 20. In this case, the filter-side ramp sections 106 each engage in one of the ramp grooves 48. After an angle of rotation of 60 ° from the beginning of the immersion of the filter-side ramp sections 106 in the Rampennuten 48, the outer seal 28 begins on the Au ßendichtfläche 60 of the Au ßendichtabschnitts 58 abut and is guided on further rotation of the replaceable filter 14 in the querschnittserweiterten input area.

After a further rotation by 60 °, the front ends of the filter-side ramp sections 160 abut against the rear ends of the ramp grooves 48 in the closing direction of rotation 43. The ends of the Rampennuten 48 form stops with which in the closed state of the connecting device 22 further rotation of the replaceable filter 14 is prevented.

In the closed state of the connecting device 22, the inner seal 92 is tightly pressed against the sealing surface 32 of the connecting sleeve section 28 in the axial direction.

In an end phase of the closing movement, furthermore, the latching lugs 1 1 6 of the spring arm sections 1 14 of the latching spring elements 1 10 each abut the rear ends of the guide surfaces 54 of the latching elements 50 in the closing direction of rotation 43. During further rotation of the replaceable filter 14 in the closing direction of rotation 43, the latching lugs 1 1 6 are guided on the guide surfaces 54. In the closed state of the connecting device 22, the latching lugs 1 16 each engage in the latching depressions 56 of the latching elements 50. When snapping the locking lugs 1 16 a perceptible noise is generated.

The latched detents 1 1 6 complicate the opening of the connecting device 22 by rotating the exchange cylinder 14 against the closing direction of rotation 43. Furthermore, the compressed inner seal 92 complicates the opening of the connecting device 22 due to friction. The removal of the replaceable filter 14 from the filter head 12 is carried out by turning the replaceable filter 14 against the closing direction of rotation 43. First, the spring force of the spring sections 1 14 and the frictional force between the inner seal 92 and the sealing surface 32 must be overcome. During operation of the filter system 10, engine oil to be filtered is supplied to the inlet annulus 30 through the inlet 16 of the filter head 12. From there, the engine oil passes through the inlet channels 104 in the raw-side annular space 82 of the replaceable filter 14. The motor oil to be filtered flows through the filter medium 72 from radially au Shen radially inward and is cleaned. The cleaned engine oil leaves the element interior 78 through the outlet opening 86 and enters the interior of the connection sleeve section 28. From there, the purified motor oil flows into the outlet 18 of the filter head 12 and leaves the filter system 10.

Claims

claims
 1 . Filter device (10) for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular of a motor vehicle, with a filter head (12), which at least one inlet (16), at least ei - A drain (18) for the fluid and a head-side connecting part (20) by means of a plug and / or rotary movement with respect. A connecting axis (26) closable and detachable connection means (22) for a replaceable filter (14), and the replaceable filter (14) has a filter-side connecting part (108) of the connecting device (22), which can be detachably connected to the head-side connecting part (20), characterized in that at least a first of the connecting parts (20) at least two with respect to. 26) has helically extending first ramp sections (42) which at least partially surrounds with respect to the connection axis (26) overlap such that they define a helically extending first ramp groove (48) on axially opposite sides with respect to the connection axis (26), and the second connection part (108) at least two second ramp sections (29) extending helically with respect to the connection axis (26). 106), of which at least one is at least partially guided in one of the first ramp grooves (48) for closing the connecting device (22).
2. Filter device according to claim 1, characterized in that at least one of the first ramp sections (42) au ßerhalb the corresponding first ramp groove (48) has a Einführrampenfläche (44) which merges into the corresponding first ramp groove (48).
3. Filter device according to claim 1 or 2, characterized in that at least one of the first ramp sections (42) extends with respect to the connection axis (26) only over a part of the circumference.
 4. Filter device according to one of the preceding claims, characterized in that at least the first ramp sections (42) each extend over a same circumferential angle.
5. Filter device according to one of the preceding claims, characterized in that a circumferential angle over which each of the Rampennuten (48) extends circumferentially, approximately at an angle of 360 ° divided by the number of the first ramp sections (42).
 6. Filter device according to one of the preceding claims, characterized in that the Rampennuten (48) with respect. The connecting axis (26) circumferentially adjoin one another.
7. Filter device according to one of the preceding claims, characterized in that the connecting device (22) has at least one locking device (52) with at least one head-side locking part (50) and at least one filter-side locking part (1 10), in the closed position of the connecting device ( 42) can enter together with each other an unlockable connection.
8. Filter device according to one of the preceding claims, characterized in that a profile of the ramp sections (42, 106) is adapted to an arrangement of a. With respect to the connecting axis (26) circumferential Au seal (128) of the connecting device (22), that the outer seal (128) upon closing of the connecting device (42) by means of a plug and / or rotary movement during an early closing phase, in particular in which the second Rampab- Sections (106) are located in a respective initial region of the Rampennuten (48), axially out of ßerhalb one of two sealing portions (58, 126), in particular a cylindrical Au denichtababschnitts (58), between which they in the closed position of the connecting device (22) seals in the radial direction, and during a subsequent closing phase, in which engage the second Rampen- sections (106) in particular in a respective end region of the Rampennuten (48), between the two sealing portions (58, 126) is pressed.
 9. replaceable filter (14) of a filter device (10) for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular a motor vehicle, in particular according to one of the preceding claims, the filter side Connection part (108) has a connection means (32) which can be closed and released by means of a plug and / or rotary movement with respect to a connection axis (96), which are releasably connected to a head-side connection part (20) of a filter head (12) of the filter device (10) can, characterized in that at least a first of the connecting parts (20) at least two. With respect to the connecting axis (26) helically extending first ramp sections (42) with respect to the connecting axis (26) at least partially overlap such that they are helical extending first ramp groove (48) with respect to the connection axis (26 ), and the second connecting part (108) has at least two second ramp sections (106) running helically with respect to the connecting axis (26), at least one of which is at least partially in one of the first one for closing the connecting device (32) Ramp grooves (48) can be performed.
 10. Filter device (10) for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular a motor vehicle, in particular according to one of the preceding claims, with a filter head (12), which at least one inlet (16), at least one outlet (18) for the fluid and a head-side connecting part (20) of a connecting device (22) for a replaceable filter (22) that can be closed and released by means of a plug-in and / or rotary movement with respect to a connecting axis (26) 14), and the replaceable filter (14) has a filter-side connecting part (108) of the connecting device (22), which can be detachably connected to the head-side connecting part (20), characterized in that the connecting device (22) at least one with respect Connecting axis (26) has circumferential inner seal (92) which between the filter head (12) and the We at least axially with respect to the connection axis (26) and a raw side (82) of the replaceable filter (14) from a clean side (78) can separate.
 1 1. Filter device according to one of the preceding claims, characterized in that the inner seal (92) is an annular seal.
12. Filter device according to one of the preceding claims, characterized in that the inner seal (92) has a rectangular profile.
 13. Filter device according to one of the preceding claims, characterized in that the inner seal (92) is arranged coaxially to the connecting axis (26).
14. Filter device according to one of the preceding claims, characterized in that the internal sealing tion (92) with the replaceable filter (14) is connected.
 15. Filter device according to one of the preceding claims, characterized in that the inner seal (92) on an end body, in particular an end plate (74), a filter element, in particular a round filter element (70), of the replaceable filter (14) is arranged.
16. Filter device according to one of the preceding claims, characterized in that the inner seal (92) surrounds a passage opening (86) to an element interior (78) of a filter element (70) of the replaceable filter (14).
 17. Exchange filter (14) of a filter device (10) for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular a motor vehicle, in particular according to one of the preceding claims, the a filter-side connecting part (108) of a by means of a plug and / or rotary movement with respect. A connecting axis (96) closable and releasable connection means (32) which with a head-side connecting part (20) of a filter head (12) of the filter device (10) detachably can be connected, characterized in that the connecting means (22) on the replaceable filter (14) at least one with respect to the connecting axis (26) circumferential inner seal
(92), which between the filter head (12) and the replaceable filter (14) at least axially with respect to the connection axis (26) seal and a raw side (82) of the replaceable filter (14) from a clean side (78) can separate.
 18. Filter device (10) for fluid, in particular fluid, in particular oil, fuel, water, urea-substance solution, or gas, in particular air, in particular an internal combustion engine, in particular of a motor vehicle, in particular according to one of the preceding claims, with a filter head (12). , which comprises at least one inlet (16), at least one outlet (18) for the fluid and a head-side connecting part (20) of a connection device (22) which can be closed and released by means of a plug-in and / or rotary movement with respect to a connection axis (26) Has an exchangeable filter (14), and the replaceable filter (14) has a filter-side connecting part (108) of the connecting device (22), which can be detachably connected to the head-side connecting part (20), the connecting device (22) at least one with respect. 26) has peripheral Au ßendichtung (128) which between the filter head (12) and the replaceable filter (14) least S seal radially with respect to the connection axis (26) and a fluid-carrying space (30) of the filter device (10) from the environment (132) separated, characterized in that the at least one Au ßendichtung (128) of the connecting parts (20 , 108) is separated.
 19. Filter device according to one of the preceding claims, characterized in that the at least one Au ßendichtung (128) with respect. The connecting shaft (96) in the radial direction, in particular only in the radial direction, seals.
20. Filter device according to one of the preceding claims, characterized in that the at least one Au ßendichtung (128) is an O-ring seal.
21. Filter device according to one of the preceding claims, characterized in that the at least one Au ßendichtung (128) on the side of the replaceable filter (14) is attached.
22. Filter device according to one of the preceding claims, characterized in that on the side of the filter head (12) has a corresponding sealing surface (60) is arranged, with which the at least one outer seal (128) can cooperate sealingly.
 23. Filter device according to one of the preceding claims, characterized in that the sealing surface (60) on a corresponding Au ßendichtabschnitt (58) on the side of the filter head (12) is arranged.
 24. Filter device according to one of the preceding claims, characterized in that the at least one Au ßendichtung (128) in a seal receptacle (126) is arranged.
 25. Replaceable filter (14) of a filter device (10) for fluid, in particular liquid, in particular oil, fuel, water, urea solution, or gas, in particular air, in particular an internal combustion engine, in particular a motor vehicle, in particular according to one of the preceding claims, the filter side Connection part (108) has a connection means (32) which can be closed and released by means of a plug and / or rotary movement with respect to a connection axis (96), which can be detached with a head-side connection part (20) of a filter head (12) of the filter device (10) The connection device (22) has at least one circumferential seal (128) with respect to the connection axis (26) which seals between the filter head (12) and the replaceable filter (14) at least radially with respect to the connection axis (26) and a fluid-carrying space (30) of the filter device (10) from the environment (132) can separate, characterized gekennzeichn et that the at least one outer seal (128) is separated from the connecting parts (20, 108).
PCT/EP2014/064558 2013-07-12 2014-07-08 Filter device for fluid and replaceable filter WO2015004114A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE102013011616.3 2013-07-12
DE102013011620.1A DE102013011620B4 (en) 2013-07-12 2013-07-12 Filter device for fluid and replaceable filter
DE102013011616.3A DE102013011616B4 (en) 2013-07-12 2013-07-12 Filter device for fluid and replaceable filter
DE102013011620.1 2013-07-12
DE102013011617.1A DE102013011617B4 (en) 2013-07-12 2013-07-12 Filter device for fluid and replaceable filter
DE102013011617.1 2013-07-12

Publications (2)

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WO2015004114A2 true WO2015004114A2 (en) 2015-01-15
WO2015004114A3 WO2015004114A3 (en) 2015-03-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105888772A (en) * 2016-06-06 2016-08-24 蚌埠市黑马滤清器有限公司 Oil filter with guide plate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10052524A1 (en) * 2000-10-23 2002-04-25 Beko Technologies Gmbh Filter used for removing pollutants from a gas stream has an inlet elbow partially formed in the housing head and in the element head
US20080245719A1 (en) * 2005-02-22 2008-10-09 Baldwin Filters, Inc. Filter Element And Filter Assembly Including Locking Mechanism
WO2012153441A1 (en) * 2011-05-06 2012-11-15 株式会社コガネイ Vessel attaching/removing device for conditioning apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10052524A1 (en) * 2000-10-23 2002-04-25 Beko Technologies Gmbh Filter used for removing pollutants from a gas stream has an inlet elbow partially formed in the housing head and in the element head
US20080245719A1 (en) * 2005-02-22 2008-10-09 Baldwin Filters, Inc. Filter Element And Filter Assembly Including Locking Mechanism
WO2012153441A1 (en) * 2011-05-06 2012-11-15 株式会社コガネイ Vessel attaching/removing device for conditioning apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105888772A (en) * 2016-06-06 2016-08-24 蚌埠市黑马滤清器有限公司 Oil filter with guide plate

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