WO2019166599A1

WO2019166599A1 - Oil separator element and oil separator arrangement

Info

Publication number: WO2019166599A1
Application number: PCT/EP2019/055087
Authority: WO
Inventors: Janine Schmelzle; Klemens Dworatzek
Original assignee: Mann+Hummel Gmbh
Priority date: 2018-03-01
Filing date: 2019-03-01
Publication date: 2019-09-06
Also published as: DE112019001084A5; DE102018001635A1

Abstract

The invention relates to a filter element (14), in particular to an oil separator element, with a first end disk (19), a second end disk (20) and a filter medium (21) arranged between the first end disk (19) and the second end disk (20), wherein the first end disk (19) has a fluid inflow opening (23) and at least three securing elements (25-27), distributed irregularly around the fluid inflow opening (23), for gripping behind a filter element adapter plate (18) in a form-fitting manner.

Description

description

Oil separator element and oil separator arrangement Technical field

The present invention relates to an oil separator element and an oil separator arrangement with such an oil separator element.

State of the art

In oil-cooled and / or oil-lubricated screw compressors for compressing air, it may be necessary to de-pressurize the compressed air before supplying it to a compressed air system. Further, this can recover the oil for re-supply to a screw compressor. To de-oil the compressed air, filter elements, in particular so-called coalescing elements, can be used, for example, which usually have a wound glass fiber fleece as the filter medium. The smallest possible oil droplets settle on the filter medium, which coalesce into larger oil droplets, whereby the oil can be separated from the compressed air with high efficiency. Such filter elements are designed interchangeable in pressure vessels or with a so-called spin-on housing as a disposable part usually replaceable and are referred to here as oil separator or oil separator. Such separator inserts can also be used to separate other liquids from a gas stream.

EP 0 695 572 A2 describes an oil separator for a screw compressor with a filter element that is accommodated in a filter housing and sealed axially relative thereto.

Disclosure of the invention

It is therefore an object of the invention to provide an improved oil separator element.

Accordingly, a filter element, in particular an oil separator element, with a first end disk, a second end disk and a filter medium arranged between the first end disk and the second end disk is proposed, the first end disk having a fluid inlet opening and at least three fastening elements distributed unevenly around the fluid inlet opening for positive engagement behind a filter element adapter plate. The filter element is in particular adapted to filter fluids, such as air or other gases, liquids, in particular liquid operating means of a vehicle, in particular of a motor vehicle, such as oil, water, gasoline, kerosene or urea solution. In particular, the filter element is an oil separator element. The filter element is particularly suitable for separating oil from air compressed by means of a screw compressor, in particular compressed air. The filter element can also be referred to as filter candle, separator element or coalescing element. The filter element may find application in automobiles, watercraft, rail vehicles, agricultural vehicles, construction machinery, aircraft or the like. Furthermore, the filter element can also be used in immobile applications, for example in building technology, in vacuum technology and in compressed air technology in general and in the field of liquid filtration.

The filter medium is preferably a wound filter fleece, in particular a glass fiber nonwoven. Preferably, the filter medium is unfolded. The first end disk and the second end disk can be glued and / or jammed with the filter medium. In particular, the first end disk and the second end disk are each provided on the front side of the filter medium. The first end disk and / or the second end disk can, for example, be made of a metal material, in particular of a metal sheet. Alternatively, the first end plate and / or the second end plate may also be made of a plastic material. Preferably, the filter element is constructed rotationally symmetrical to a central axis or axis of symmetry. The fluid inlet opening is provided in particular centrally on the first end plate and breaks through it. The fluid inlet opening can be constructed rotationally symmetrical to the symmetry axis.

From the fact that the fastening elements are distributed unevenly or asymmetrically around the fluid inflow opening, it is to be understood that the fastening elements are arranged unevenly spaced from one another. Preferably, three fasteners are provided. However, it can also be provided four, five or more such fasteners. The filter element adapter plate may be part of a filter arrangement which also has at least one filter element. The filter assembly may include a filter housing to which the filter element adapter plate is attached and which receives the filter element or a plurality of filter elements. The filter element adapter plate is preferably made of a metal material. Due to the provided on the filter element fasteners and corresponding receiving openings on the filter element adapter plate, the filter element can be quickly assembled and disassembled. Due to the asymmetrical arrangement of the fasteners and the corresponding receptacle openings results in a key-lock system, which is not suitable Fil terelemente can not be mounted on the filter element adapter plate.

In embodiments, the fasteners are each C-shaped in cross-section. With the help of the C-shaped geometry, the filter element adapter plate can be gripped or engaged behind a positive fit. A positive connection is formed by the interlocking or Flintergreifen of at least two connection partners, in this case the connecting elements and the filter element adapter plate.

In embodiments, the first end disk has a first fastening element, a second fastening element and a third fastening element, wherein a first angle provided between the first fastening element and the second fastening element is provided by a second angle provided between the second fastening element and the third fastening element and / or or differs from a third angle provided between the third fastening element and the first fastening element. The first end disk may also have a fourth fastening element, a fifth fastening element or further fastening elements. Preferably, the second angle is equal to the third angle, wherein the first angle is smaller than the second angle and the third angle. Alternatively, all angles can be different. For example, the first angle is 90 ° and the second angle and the third angle are each 135 °.

In embodiments, the fastening elements each have a spherical cap-shaped contact surface for contacting the filter element adapter plate. For example, the contact surface may be hemispherical in shape. Due to the spherical cap-shaped design of the contact surface, this preferably only contacts the filter element adapter plate punctiformly. Flierdurch a low mounting force for mounting the filter element can be achieved. Preferably, the contact surface is located opposite an annular surface that runs around the fluid inlet opening.

In embodiments, an elastically deformable sealing element, in particular an O-ring, is accommodated in the first end disk. For this purpose, the first end disk has an annular groove running around the fluid inlet opening, in which the sealing element is included. When mounting the filter element on the Filterele mentadapterplatte the sealing element between the filter element adapter plate and the first end plate is pressed. Flierdurch is a fluid-tight seal of the first end plate with respect to the filter element adapter plate guaranteed. The sealing element can also be a foam seal or any other sealing element.

In embodiments, the second end plate has a handle for handling the filter element, in particular for holding and applying a torque during assembly and disassembly. This simplifies the assembly and disassembly of the filter element.

Furthermore, a filter arrangement, in particular an oil separator arrangement, with such a filter element and a filter element adapter plate is proposed, wherein the fastening elements of the filter element engage behind the filter element adapter plate in a form-fitting manner. The filter arrangement may be part of a fluid separator, in particular an oil separator. The filter assembly may further include a filter housing to which the filter element adapter plate is removably secured. With the aid of the filter arrangement, a large and difficult-to-handle conventional filter element can be replaced with a plurality of individual filter elements and the filter element adapter plate.

In embodiments, the filter element adapter plate has a connection opening corresponding to the fluid inlet opening of the filter element, wherein the filter element adapter plate has at least three receiving openings which correspond to the fastening elements of the filter element and are distributed unevenly around the connection opening. In particular, the filter element adapter plate has a plurality of connection openings. For example, three, four or more ports are provided. Because the fastening elements or the receiving openings are distributed unevenly around the fluid inlet opening or the connection opening, coding can be achieved which makes it possible to mount the filter element only on a correspondingly designed filter element adapter plate. The number of connection openings preferably corresponds to the number of filter elements used. In particular, a diameter of the connection opening is at least slightly larger than a corresponding diameter of the fluid inlet opening of the filter element. In the receiving openings of the respective connection opening, the fastening elements can be inserted. By rotating the filter element relative to the filter element adapter plate, the fastening elements engage in the form of the filter element adapter plate, where it is fixed by the filter element to the filter element adapter plate.

In embodiments, the fastening elements of the filter element and the receiving openings of the filter element adapter plate are arranged so that in a Ver bring the filter assembly from an initial state in which the filter element is separated from the filter element adapter plate, in an end state in which the Filterele ment positively with the filter element adapter plate is connected, the fastener elements engage behind the filter element adapter plate with a time-locked offset. The number of receiving openings preferably corresponds to the number of fastening elements. For example, a first receiving opening, a second receiving opening and a third receiving opening are provided. In this case, a first angle provided between the first receiving opening and the second receiving opening differs from a second angle provided between the second receiving opening and the third receiving opening and / or from a third angle provided between the third receiving opening and the first receiving opening. In order now to achieve the time-shifted engagement of the fastening elements, the three angles of the fastening elements differ from the three angles of the receiving openings. Furthermore, a respective width of the receiving openings can also be selected so that they are correspondingly wider than a respective width of the fastening elements, so that they engage behind the filter element adapter plate one after the other in a form-fitting manner. The widths of the receiving openings may differ in particular from each other.

In embodiments, the filter element adapter plate has at least one protection against rotation, against which, in the end state, at least one of the fastening elements abuts. In particular, the filter element adapter plate comprises a first anti-twist protection against which at least one of the fastening elements abuts in the end state, and a second anti-twist protection which causes the filter element to be rotatable in only one direction relative to the filter element adapter plate. Flierdurch prevents incorrect mounting.

Brief description of the drawings

It shows: 1 shows a schematic perspective partial sectional view of an embodiment of a fluid separator;

2 shows a schematic perspective view of an embodiment of a

Filter arrangement for the fluid separator of FIG. 1;

3 shows a further schematic perspective view of the filter arrangement according to FIG. 2;

4 shows a schematic perspective partial sectional view of the filter arrangement according to FIG. 2;

5 shows a schematic perspective view of an embodiment of a

Filter element for the filter assembly of FIG. 2;

FIG. 6 shows a further schematic perspective view of the filter element according to FIG. 5; FIG.

FIG. 7 shows a schematic plan view of the filter element according to FIG. 5; FIG.

Fig. 8 is a schematic sectional view of the filter element according to the Schnittli never IIX-IIX of Fig. 7;

9 is a schematic perspective view of an embodiment of a

End disk for the filter element according to FIG. 5;

FIG. 10: a schematic plan view of the end disk according to FIG. 9; FIG.

11 shows a schematic sectional view of the end disk according to the section line

XI-XI of Fig. 10;

Fig. 12: a schematic perspective view of an embodiment of a

Filter element adapter plate for the filter assembly of FIG. 2;

FIG. 13 shows a schematic plan view of the filter element adapter plate according to FIG. 12; FIG.

Fig. 14 is a schematic sectional view of the filter element adapter plate according to the section line XIV-XIV of Fig. 13;

FIG. 15 shows the detail view XV according to FIG. 14; FIG.

FIG. 16 shows a schematic detail view of the filter arrangement according to FIG. 2; FIG. and FIG. 17 shows a schematic sectional view of the filter arrangement according to the section line XVII-XVII of FIG. 16. In the figures, identical or functionally identical elements are provided with the same reference numerals, unless stated otherwise.

Embodiment (s) of the invention

1 shows a schematic perspective partial sectional view of an embodiment of an oil separator or fluid separator 1. The fluid separator 1 is adapted to separate a liquid fluid, for example oil, from a gaseous fluid, for example compressed air. The fluid separator 1 may be associated with a screw compressor or screw compressor or may be part of a screw compressor or screw compressor.

The fluid separator 1 comprises a compressed air tank 2 with a tubular wall 3, which may be circular in cross section. On the wall 3, a fluid inlet 4 may be provided. The fluid inlet 4 may be tubular with a circular cross-section. The fluid inlet 4 breaks through the wall 3. Via the fluid inlet 4, a fluid F1, for example an oil / air mixture, can be supplied to the fluid separator 1. The fluid F1 can be supplied to the fluid separator 1 of the aforementioned screw compressor.

On the front side, the compressed air tank 2 is closed with the aid of a curved, in particular spherical-shaped curved, bottom 5. The lower, bounded by the bottom 5 and the adjacent areas of the wall 3 area serves as a plenum and sump for the fluid, in particular the oil. The bottom 5 and the wall 3 may be formed materialeinstückig. In the middle of the bottom 5, a fluid outlet 6 can be provided. Via the fluid outlet 6, a fluid F2, for example oil, which is separated from the fluid F1, can be removed or sucked off. The compressed air tank 2 further comprises at a bottom 5 remote from the end portion of the wall 3, a connecting flange 7, which may be annular.

The fluid separator 1 also has a cover 8, which is detachably connected to the connecting flange 7 of the compressed air tank 2. For example, the cover 8 is connected by means of screws to the connecting flange 7. For this purpose, for example, corresponding holes 9 can be provided on the cover 8 and threaded holes 10 corresponding to the holes 9 on the connecting flange 7.

Centered on the lid 8, a tubular fluid outlet 11 is provided. About the fluid idauslass 11, a fluid F3, for example, purified compressed air, from the the fluid F2 was deposited, be removed. For example, the fluid F3 can be supplied to a compressed air system. In a direction of gravity g, the fluid idauslass 11 is disposed above the fluid inlet 4 and the fluid outlet 6.

The fluid separator 1 further comprises a filter arrangement 12, in particular an oil separator arrangement. The filter assembly 12 comprises a cup-shaped filter housing

13 and a plurality of filter elements 14 accommodated in the filter housing 13. The filter elements 14 can also be referred to as coalescing elements, filter candles, separator elements or oil separator elements. The number of filter elements 14 is arbitrary. For example, as shown in Fig. 1, four such filter elements

14 may be provided. Alternatively, for example, two, three, four, five or more filter elements 14 or only one such filter element 14 may be provided.

The filter housing 13 comprises a tubular wall 15, which may have a circular geometry in cross section. At one end portion of the wall 15, a connecting flange 16 is provided, which is arranged between the cover 8 and the connecting flange 7 of the compressed-air boiler 2. That is, the connecting flange 16 may be clamped between the cover 8 and the connecting flange 7 of the compressed air boiler 2. In the connecting flange 16 7 corresponding holes 17 may be provided to the holes 9 of the lid 8 and the threaded holes 10 of the connecting flange.

2 to 4 show different views of the filter assembly 12. At a connecting flange 16 facing away from the end portion of the wall 15 is a Filterele mentadapterplatte 18 is provided on which the filter elements 14 are attached. The filter element adapter plate 18 can be detachably connected, that is exchangeable, with the filter housing 13. For example, the filter element adapter plate 18 is screwed into the tubular wall 15 or, for example, connected thereto by means of a bayonet closure. The filter element adapter plate 18 is fluid-tightly connected to the wall 15. That is, no fluid can pass between the filter element adapter plate 18 and the wall 15.

5 and 6 respectively show schematic perspective views of an embodiment of a filter element 14 as explained above. FIG. 7 shows a schematic plan view of the filter element 14 and FIG. 8 shows a schematic sectional view of the filter element 14. View of the filter element 14 along the section line IIX-IIX of Fig. 7. Hereinafter, reference is made to FIGS. 5 to 8 simultaneously.

The filter element 14 may be constructed rotationally symmetrical to a central axis or axis of symmetry M. The filter element 14 comprises a first end disk 19, which is shown in different views in FIGS. 9 to 11, and a second end disk 20. The first end disk 19 and the second end disk 20 may be made of a metal material or a plastic material, for example his. Preferably, the end plates 19, 20 are each made of a metal sheet.

Between the first end plate 19 and the second end plate 20, a filter membrane 21 is arranged. The filter medium 21 is preferably not folded, but smooth. In particular, the filter medium 21 can be or comprise a wound glass fiber fleece. The first end disk 19 and the second end disk 20 may be glued to the filter medium 21. The filter element 14 may, for example, have a fleas h 14 of about 500 mm and a diameter d14 of about 150 mm. The second end plate 20 includes a handle 22 for flanging the filter element 14.

As shown in FIG. 8, the filter element 14 comprises a raw side RO and a clean side RL separated from the raw side RO by means of the filter medium 21. The fluid F1 to be filtered flows from the raw side RO through the filter medium 21 to the clean side RL, wherein with the aid of the filter medium 21, the fluid F2 is separated from the fluid F1 and does not pass through the filter medium 21 and only the fluid F3 through the Filtemne- dium 21 passes on the clean side RL. The fluid F2 is deposited on the inside of the filter medium 21 in small droplets, which coalesce into larger droplets, which in turn flow down along the filter medium 21 in the direction of gravity g. The fluid F2 collects in the bottom 5 of the compressed air vessel 2, wherein the fluid F2 can be discharged or sucked through the fluid outlet 6. Furthermore, the fluid F2 can collect in the filter housing 13 on the adapter plate 18 and be sucked out there by means of a drainage line (not shown).

The first end disk 19 comprises a fluid inlet opening 23, which may be configured rotationally symmetrical to the axis of symmetry M. Through the fluid inflow opening 23, the fluid F1 can enter an interior 24 of the filter element 14. Furthermore, the fluid F 2 can emerge from the filter element 14 through the fluid inlet opening 23. The first end plate 19 furthermore has at least three fastening elements 25 to 27 distributed unevenly around the fluid inlet opening 23. The number of Fasteners 25 to 27 is arbitrary. Preferably, however, at least three such fasteners 25 to 27 are provided. However, four, five or more such fastening elements 25 to 27 may also be provided.

The first end disk 19 can furthermore have a sealing element 28, for example an O-ring, in order to seal the first end disk 19 in a fluid-tight manner with respect to the filter element adapter plate 18. The fastening elements 25 to 27 are adapted to engage behind the filter element adapter plate 18 in a form-fitting manner. A positive connection is created by the interlocking or Flintergreifen of at least two connecting partners, in this case the fasteners 25 to 27 and the Filterele mentadapterplatte 18th

Assuming that the fastening elements 25 to 27 are distributed unevenly or asymmetrically around the fluid inflow opening 23, it is to be understood that a first angle α1 (FIG. 10) between a first fastening element 25 and a second fastening element 26 is not equal to a second one Angle ß1 between the second fastening element 26 and a third fastening element 27 and unequal to a third angle y1 between the third fastening element 27 and the first fastening element 25 is. In this case, two of the angles cd, ß1, y1 can be the same size. For example, the second angle ß1 is the same size as the third angle y1. However, the first angle cd differs from both the second angle β1 and the third angle g1.

As shown in FIG. 10, the first fastening element 25 has a width b25, the second fastening element 26 has a width b26 and the third fastening element 27 has a width b27. The widths b25, b26, b27 can be different sizes or the same size. Preferably, the widths b25, b26, b27 are the same size.

The first end disk 19 comprises, as shown in FIG. 11, a connecting portion 29, which may be annular. The connecting section 29 can be made, for example, from a thin-walled sheet metal material. The connection section 29 has a receiving region 30, which is likewise of annular design. In the receiving area 30, the filter medium 21 is accommodated. In particular, the filter medium 21 is glued into the receiving area 30.

On a side facing away from the receiving portion 30 of the connecting portion 29, a mounting portion 31 is provided, which can be welded, for example, with the Verbindungsab- section 29. The mounting portion 31 is annular and comprises the fluid inflow opening 23 and the fastening elements 25 to 27. Preferably, the mounting portion 31 is made of a thicker walled sheet material than the connecting portion 29th

Circumferentially between the mounting portion 31 and the connecting portion 29, a groove 32 is provided, in which the sealing element 28 is received. The fastening elements 25 to 27 are C-shaped in cross-section. Each fastening element 25 to 27 has a spherical contact surface 33 (FIG. 11) facing the filter medium 21. Opposite the respective contact surface 33, an annular counter surface 34 (FIGS. 9 and 11) is provided. The mating surface 34 completely runs around the fluid inlet opening 23. The fluid inflow port 23 may have a diameter d23 of about 90 mm.

Fig. 12 shows a schematic perspective view of an embodiment of the above-explained filter element adapter plate 18, Fig. 13 shows a schematic plan view of the filter element adapter plate 18, Fig. 14 shows a schematic sectional view of the filter element adapter plate 18 according to the section line XIV-XIV of FIG. 13 and FIG. 15 shows the detail view XV according to FIG. 13. In the following, reference is made to FIGS. 12 to 15 at the same time.

The filter element adapter plate 18 is preferably made of a metal material, in particular of a steel sheet. The filter element adapter plate 18 comprises a tubular fastening section 35, which is accommodated in the wall 15 of the filter housing 13 when the filter element adapter plate 18 is mounted, as shown in FIGS. 3 and 4. In this case, the filter element adapter plate 18 is preferably non-destructively separable from the wall 15 in order to replace them. However, the filter element adapter plate 18 may also be firmly connected to the wall 15.

Further, the filter element adapter plate 18 includes a plate-shaped base portion 36 which closes the tubular attachment portion 35 on the front side. The attachment portion 35 may have a diameter d35 of about 390 mm inside. The attachment portion 35 may further include a fleas h35 of about 30 mm. A wall thickness of the fastening section 35 and of the base section 36 can be, for example, 3 mm in each case.

At the base portion 36 a plurality, for example four, connection openings 37 to 40 are provided. In this case, the number of connection openings 37 to 40 corresponds to the number of filter elements 14 used. That is to say, for example also only one connection opening 37 to 40, two connection openings 37 to 40, three connection openings 37 to 40 or even more than four connection openings 37 to 40 can be provided. Each connection opening 37 to 40 corresponds to a fluid inlet opening 23 of one of the filter elements 14. The connection openings 37 to 40 are preferably of circular design. In particular, the connection openings 37 to 40 are distributed uniformly around a circumference of the base section 36. Center points of the connection openings 37 to 40 may, for example, be arranged at a distance a of approximately 230 mm apart from each other.

Each connection opening 37 to 40 are associated with several, for example three, receiving openings 41 to 43 (FIG. 15). In particular, a first receiving opening 41, a second receiving opening 42 and a third receiving opening 43 are provided. The number of receiving openings 41 to 43 corresponds to the number of fastening elements 25 to 27 of the respective filter element 14. FIG. 15 shows a detailed view of the connection opening 40. However, the connection openings 37 to 39 are constructed analogously. The connection opening 40 has a diameter d40. The diameter d40 may be, for example, about 96 mm. For example, the diameter d40 is slightly larger than the diameter d23 of the fluid inlet opening 23.

The first receiving opening 41 is the first fastening element 25, the second receiving opening 42 is the second fastening element 26 and the third Aufnahmeöff- 43 is associated with the third fastening element 27. The first receiving opening 41 has a width b41, the second receiving opening 42 has a width b42 and the third receiving opening 43 has a width b43. The widths b41, b42, b43 can be different sizes or the same size. However, the widths b41, b42, b43 of the receiving openings 41 to 43 are at least slightly larger than the widths b25, b26, b27 of the fastening elements 25 to 27 assigned to them, so that they can be threaded into the receiving openings 41 to 43.

The receiving openings 41 to 43 are, like the fastening elements 25 to 27, distributed unevenly around the respective connection opening 37 to 40 around. In particular, a first angle α2 is provided between the first receiving opening 41 and the second receiving opening 42, a second angle β2 is provided between the second receiving opening 42 and the third receiving opening 43 and between the third receiving opening 43 and the first receiving opening 41 a third ter angle g2 provided. The angles a2, ß2, g2 differ from each other. For example, however, the second angle ß2 and the third angle g2 be equal. However, the first angle a2 differs in size from the angles ß2, g2.

The filter assembly 12 may be of a form-locking manner from an initial state Z1 shown in FIG. 15, in which the filter element 14 is separated from the filter element adapter plate 18, in a final state Z2 shown in FIGS. 16 and 17 is connected to the filter element adapter plate 18, spent. The fastening elements 25 to 27 of the respective filter element 14 are threaded into the receiving openings 41 to 43 of one of the connection openings 37 to 40 and the filter element 14 is rotated counterclockwise relative to the filter element adapter plate 18 in the orientation of FIG. 16. As a result, the fastening elements 25 to 27 engage behind the filter element adapter plate 18 in a form-fitting manner.

Preferably, the angle a2 differs from the angle cd, the angle ß2 from the angle ß1 and the angle g2 from the angle g1. In particular, by appropriate selection of the angles a2, ß2, g2 and / or the widths b25, b26, b27, b41, b42, b43, the receiving openings 41 to 43 arranged and / or configured so that upon the movement of the filter assembly 12 of the initial state Z1 in the final state Z2, the fasteners 25 to 27 successively, that is, offset in time, engage behind the filter element adapter plate 18 in a form-fitting manner. In this way, a low mounting torque for mounting the filter element 14 on the filter element adapter plate 18 can be achieved.

Each connection opening 37 to 40 is further associated with a first anti-twist protection 44 (FIGS. 15 and 16), against which at least one of the fastening elements 25 to 27 rests in the end state Z 2. As a result, a rotational movement of the filter element 14 relative to the corresponding connection opening 37 to 40 is limited. Furthermore, each connection opening 37 to 40 is assigned a second rotation protection 45 which, in the orientation of FIG. 16, prevents the filter element 14 from rotating counterclockwise. That is, in the orientation of Fig. 16, a rotational movement of the filter element 14 is prevented in the clockwise direction and only allowed a counterclockwise movement. The torsion protectors 44, 45 are, as can be seen, for example, in FIG. 12, formed as indentations in the base section 36 of the filter element adapter plate 18. In the final state Z2, as shown in Fig. 17, the respective contact surface 33 of the fasteners 25 to 27 in contact with the base portion 36 of the Filterele mentadapterplatte 18, wherein the sealing element 28 between the base portion 36 of the filter element adapter plate 18 and the first end plate 19th pressed or clamped. In this case, a small gap is provided between the mating surface 34 and the base portion 36 of the filter element adapter plate 18, so that the sealing element 28 is always pressed. Flierdurch a fluid-tight seal between the first end plate 19 and the filter element adapter plate 18 is achieved.

On account of the fastening elements 25 to 27 provided on the filter element 14 and the corresponding receiving openings 41 to 43 of the connection openings 37 to 40 of the filter element adapter plate 18, the filter elements 14 can be quickly mounted and dismounted. Due to the asymmetrical arrangement of the fastening elements 25 to 27 and the receiving openings 41 to 43 results in a key-lock system, whereby not suitable filter elements can not be mounted on the filter element adapter plate 18. With the aid of the filter arrangement 12, a large and difficult-to-handle conventional filter element can be replaced with a plurality of individual filter elements 14 and the filter element adapter plate 18. With the help of the compressed sealing element 28, a reliable sealing of the respective filter element 14 with respect to the filter element adapter plate 18 is ensured.

Used reference signs:

1 fluid separator

2 compressed air boiler

3 wall

4 fluid inlet

5 floor

6 fluid outlet

7 connecting flange

8 lids

9 hole

10 tapped hole

11 fluid outlet

12 filter arrangement

13 filter housing

14 filter element

15 wall

16 connecting flange

17 hole

18 filter element adapter plate

19 end disc

20 end plate

21 filter medium

22 handle

23 fluid inlet opening

24 interior

25 fastener

26 fastener

27 fastener

28 sealing element

29 connecting section

30 recording area

31 mounting section

32 groove

33 contact surface 34 counter surface

35 fixing section

36 basic section

37 connection opening

38 connection opening

39 connection opening

40 connection opening

41 receiving opening

42 receiving opening

43 receiving opening

44 twist protection

45 twist protection a distance

b25 width

b26 width

b27 width

b41 width

b42 width

b43 width

d14 diameter d23 diameter d35 diameter d40 diameter

F1 fluid

F2 fluid

F3 fluid

g Gravity direction h14 Fleas

h35 fleas

M symmetry axis

RL clean side

RO raw side

Z1 initial state Z2 final state a1 angle a2 angle ß1 angle ß2 angle g1 angle g2 angle

Claims

claims

An oil separator element, comprising a first end disk (19), a second end disk (20) and a filter medium (21) arranged between the first end disk (19) and the second end disk (20), wherein the first end disk (19) has a fluid has inflow opening (23) and at least three unevenly around the Fluideinströmöff- tion (23) distributed around arranged fasteners (25 - 27) for positive Flinter gripping a filter element adapter plate (18).

Second oil separator element according to claim 1, wherein the fastening elements (25 - 27) in cross section are each C-shaped.

3. Oil separator element according to claim 1 or 2, wherein the first end plate (19) has a first fastening element (25), a second fastening element (26) and a third fastening element (27), and wherein a between the first fastening element (25) and the second fastening element (26) provided for the first angle (a1) of a between the second fastening element (26) and the third fastening element (27) provided second angle (ß1) and / or between a between the third fastening element (27) and the first fastening element (25) provided third angle (g1) differs.

4. Oil separator element according to one of claims 1-3, wherein the fastening elements (25-27) each have a spherical dome-shaped contact surface (33) for contacting the filter element adapter plate (18).

5. Oil separator element according to one of claims 1 - 4, wherein in the first end plate (19) an elastically deformable sealing element (28), in particular an O-ring, is added.

6. Oil separator element according to one of claims 1-5, wherein the second end plate (20) has a handle (22) for flanging the oil separator element (14) up.

7. oil separator assembly (12), with an oil separator element (14) according to any one of claims 1-6 and a Filterelementadapterplatte (18), wherein the fastening elements (25 - 27) of the oil separator element (14) engage behind the filter element adapter plate (18) in a form-fitting manner.

8. Oil separator arrangement according to claim 7, wherein the filter element adapter plate (18) corresponds to a fluid inlet opening (23) of the oil separator element (14). and the filter element adapter plate (18) has at least three receiving openings (41-43) corresponding to the fastening elements (25-27) of the oil separator element (14), which are non-uniformly around the Connection opening (37 - 40) are arranged distributed around.

9. Oil separator arrangement according to claim 8, wherein the fastening elements (25 -

27) of the oil separator element (14) and the receiving openings (41-43) of the filter element adapter plate (18) are arranged such that when the filter assembly (12) is moved from an initial state (Z1) in which the oil separator element (14) is separated from the filter element adapter plate (18), in an end state (Z2) in which the oil separator element (14) is positively connected to the filter element adapter plate (18), the fastening elements (25-27) the filter element adapter plate ( 18) engage behind one another in a time-locked manner.

10. Oil separator arrangement according to claim 9, wherein the filter element adapter plate (18) has at least one anti-twist protection (44) against which at least one of the fastening elements (25 - 27) rests in the final state (Z2).