DE102018123770A1 - De-oiling use of an air de-oiling device and air de-oiling device - Google Patents

Abstract

An air deoiling insert (14) of an air deoiling device (10) and an air deoiling device (10) for separating oil contained in air are described. The air de-oiling insert (14) comprises at least one de-oiling medium (58) which surrounds an insert interior (60) of the air de-oiling insert (14) circumferentially with respect to an imaginary axis (24), an inlet end plate (62) which is located on an axial end face of the at least one Oil removal medium (58) is arranged and has at least one inlet opening (64) to the insert interior (60), and an outlet end plate (68) which is located on an end face of the at least one oil removal medium (58) axially opposite the inlet end plate (62). is arranged and closes the interior (60) there. A mounting flange (70) is connected to the outlet end plate (68) and can be used to fasten the air deoiling insert (14) in a housing (12) of the air deoiling device (10).

Description

Technical field

• - mit wenigstens einem Entölmedium, welches einen Einsatzinnenraum des Luftentöleinsatzes bezüglich einer gedachten Achse umfangsmäßig umgibt,
• - mit einer Einlass-Endscheibe, welche an einer axialen Stirnseite des wenigstens einen Entölmediums angeordnet ist und wenigstens eine Einlassöffnung zu dem Einsatzinnenraum aufweist,
• - mit einer Auslass-Endscheibe, welche an einer der Einlass-Endscheibe axial gegenüberliegenden Stirnseite des wenigstens einen Entölmediums angeordnet ist und den Einsatzinnenraum dort verschließt.

The invention relates to an air deoiling insert of an air deoiling device for separating oil contained in air.

• with at least one de-oiling medium which surrounds an interior of the air-de-oiling insert circumferentially with respect to an imaginary axis,
• with an inlet end plate which is arranged on an axial end face of the at least one de-oiling medium and has at least one inlet opening to the interior of the insert,
• - With an outlet end plate, which is arranged on an end face axially opposite the inlet end plate of the at least one de-oiling medium and closes the interior of the insert there.

The invention further relates to an air de-oiling device for separating oil contained in air, with a housing which has at least one air inlet for air to be freed from oil, at least one air outlet for air freed from oil and at least one oil outlet for oil separated from the air, wherein at least one air de-oiling insert is or can be arranged in the housing such that it separates the at least one air inlet from the at least one air outlet.

State of the art

Out DE 201 09 618 U1 an air filter arrangement is known which has a filter element. The air filter element is drum-shaped. A circumferential surface of the filter element which is circular in cross section and which is air-permeable and therefore forms a filter surface runs around an imaginary central longitudinal axis. One, axial end face of the filter element is open; the other end face forms a closed bottom of the filter element, which is impermeable to air.

The object of the invention is to design an air deoiling insert and an air deoiling device of the type mentioned at the outset, in which a construction effort is reduced.

Disclosure of the invention

The object is achieved according to the invention in the case of the air de-oiling insert in that a mounting flange is connected to the outlet end disk, with which the air de-oiling insert can be fastened in a housing of the air de-oiling device.

According to the invention, a mounting flange is provided on the outlet end disk, with which the air de-oiling insert can be fastened in the housing. The mounting flange is located on the closed end of the air de-oiling insert. In this way, the open end face of the air de-oiling insert is freely accessible for a corresponding connection of the insert interior to an air passage, in particular an air inlet or an air outlet, of the housing. This enables a more direct connection between the interior of the application and the corresponding air outlet on the housing side. Furthermore, it is not necessary to connect oil separation spaces of the housing or the air / oil separating element, in which oil is separated and / or separated oil, to an oil drain of the housing by means of complex drainage lines.

The deoiling medium can advantageously be a coalescing medium, a filter medium or a combination of the same or different media, which are suitable for separating oil from air.

The air-de-oiling device can advantageously be used in oil-lubricated compressors for de-oiling compressed air, in vacuum systems for de-oiling air or in internal combustion engines in connection with a crankcase ventilation.

In an advantageous embodiment, the mounting flange can surround an air outlet space or air inlet space, which is located on the side of the outlet end plate that is axially remote from the insert interior with respect to the axis. In this way, an air inlet and an air outlet of the housing and the air de-oiling insert can be arranged axially overall. The air de-oiling insert can be accommodated in the housing to save space.

In a further advantageous embodiment, the mounting flange can have an annular fastening section which extends with respect to the axis from radially inside to radially outside. With the fastening section, the mounting flange can be fastened to the housing. Because the fastening flange extends radially, it can be arranged, in particular clamped, in a space-saving manner between an edge of a housing pot and a housing cover.

The air de-oiling insert can advantageously be arranged in the housing pot. For this purpose, the housing pot can have an installation opening which can be closed with the housing cover. The housing cover can with respect to the axis in the axial direction with the housing pot brought together to close the installation opening.

In a further advantageous embodiment, the mounting flange can have an annular connecting section which extends axially away from the outlet end disk on the side of the outlet end disk which is axially remote from the de-oil medium. A corresponding axial distance between the housing, in particular a housing cover, and the outlet end plate can be realized with the aid of the connecting section. The outlet end disk can be bound with a fastening section via the connecting section.

The connecting section can advantageously surround an air outlet space, which can be located on the side of the outlet end plate that is axially remote from the insert interior with respect to the axis.

In a further advantageous embodiment, the mounting flange can have at least one air passage opening, which connects an air-guiding space surrounding the air de-oiling insert with an air outlet space or air inlet space, which is located on the side of the outlet end plate that is axially remote from the insert interior with respect to the axis. In this way, depending on the direction of flow of the air in the air de-oiling device, air freed from oil can get into the air outlet space from the surrounding air-guiding space or air that is to be freed of oil can get from the corresponding air inlet space into the surrounding air-guiding space.

The air outlet space can advantageously be connected to an air outlet of the housing or the air inlet space can be connected to an air inlet of the housing. The oil-free air from the air outlet space can thus pass through the air outlet from the housing or the air to be freed of oil can enter the housing through the air inlet.

Advantageously, the air to be freed of oil can reach the interior of the insert through the at least one inlet opening of the inlet end plate. The air to be de-oiled can get from the interior of the insert through the de-oiling medium with respect to the axis from radially inside to radially outside into the air-guiding space which surrounds the air-de-oiling insert, and can be de-oiled in the process. If the flow direction in the air-de-oiling device is reversed, the air to be de-oiled can pass from the air-guiding space through the de-oiling medium into the interior of the insert and flow from there through the at least one inlet opening.

Due to the respective end-face arrangement of the inlet opening of the inlet end plate on the one hand and the air outlet space, on the other hand, which is surrounded by the mounting flange, the air de-oiling insert can be constructed axially to save space overall.

In a further advantageous embodiment, the mounting flange can have an annular fastening section which is connected to the outlet end disk via an annular connecting section of the mounting flange, the connecting section extending circumferentially with respect to the axis and axially away from the outlet end disk with at least one directional component and the fastening section extends circumferentially with respect to the axis and extends from radially inside to radially outside. In this way, the exhaust filter can be made narrower overall.

In a further advantageous embodiment, the mounting flange can have at least one sealing part, which can cooperate in a sealing manner with at least one corresponding sealing part on the side of the housing of the air de-oiling device. In this way, the interior of the housing of the air de-oiling device can be sealed off from the surroundings.

The at least one flange-side sealing part and the at least one housing-side sealing part can each advantageously be a corresponding sealing surface. Another sealing part, in particular another sealing surface or a seal, can bear sealingly on a sealing surface.

In a further advantageous embodiment, the inlet end disk can have at least one sealing part, which can cooperate in a sealing manner with at least one corresponding sealing part on the side of the housing of the air-de-oiling device. In this way, correspondingly adjacent spaces of the housing of the air de-oiling device can be tightly separated from one another.

The at least one sealing part on the side of the inlet end disk can advantageously be a seal. The housing-side sealing part can accordingly be a sealing surface. Alternatively, at least one seal can be provided on the housing side and correspondingly a sealing surface on the inlet end plate. Seals and sealing surfaces can work together in a sealing manner.

At least one sealing part can advantageously be annular. In this way, the at least one sealing part can circumferentially surround a corresponding space and / or the axis.

The at least one housing-side sealing part can advantageously be arranged on a partition which separates two adjacent spaces, in particular an oil pre-separation space and an oil post-separation space.

Advantageously, one of the two spaces, in particular an oil pre-separation space, can be connected to the unfiltered air side of the air / oil separator. The other of the two rooms, in particular an oil post-separator room, can be connected to the clean air side of the air / oil separator. In this way, the clean air side of the air / oil separator can be separated from the unfiltered air side with the at least one sealing part on the inlet end disk side and the at least one housing-side sealing part.

Advantageously, the at least one sealing part on the inlet end disk side and the at least one housing-side sealing part can act in a sealing manner in the axial direction. In this way, the sealing effect can be easily achieved when the air de-oiling insert is installed in the housing.

Furthermore, the object is achieved according to the invention in the air deoiling device in that the at least one air inlet and the at least one air outlet are located on axially opposite sides with respect to an axis of the at least one air deoiling insert.

According to the invention, the at least one air inlet end and the at least one air outlet can be arranged axially, so that the air de-oiling device can be made narrower overall. A corresponding air inlet or air outlet on a peripheral side of the housing of the air de-oiling device can be dispensed with.

In an advantageous embodiment, the housing can have at least one oil pre-separation space and at least one oil post-separation space, which are connected by means of at least one oil connection, which can be closed in at least one direction, the oil pre-separation space being upstream of the at least one with respect to the air flow Air de-oiling insert and the oil post-separation chamber can be located behind the at least one air de-oiling insert. A first separation of oil can take place in the oil pre-separation chamber before the air passes through the at least one de-oiling medium. In this way, the loading of the de-oil medium with oil can be reduced. Furthermore, a higher degree of oil separation can be achieved overall.

Advantageously, at least one oil pre-separator, in particular a pre-separator mushroom, can be arranged in the at least one oil pre-separator space. Larger oil droplets in particular can be separated early with the oil pre-separator. The separated oil can, following gravity, get down to the bottom of the at least one oil pre-separation room and be collected there.

Advantageously, the at least one oil post-separation space can be located spatially below a clean air space of the at least one air de-oiling insert. In this way, oil separated on the de-oil medium on the clean-air side of the air-de-oil insert can move downward into the at least one oil-separating space following gravity and be collected there.

Advantageously, the at least one oil post-separation chamber can be separated from an overlying clean air chamber by means of an oil-permeable partition. In this way, it can be prevented that oil collected in the at least one oil post-separation chamber spills up and contaminates the radially outer peripheral side of the de-oiling medium.

Advantageously, the at least one oil pre-separation space can surround the at least one oil pre-separation space circumferentially with respect to the axis. The at least one oil post-separation chamber can be connected to the at least one oil drain on the housing side, through which oil there can be drained.

Through the at least one oil connection, oil collected in the at least one oil pre-separation space can reach the at least one oil post-separation space. In this way, a separate drainage, which would have to lead from the at least one oil pre-separating chamber out of the housing of the air de-oiling device, can be dispensed with. In this way, the construction effort can be reduced further.

In a further advantageous embodiment, the housing can have at least one sealing part, which can cooperate in a sealing manner with at least one corresponding sealing part on the side of the at least one air de-oiling insert. In this way, air and / or oil-carrying spaces within the housing of the air de-oiling device and / or from the environment can be sealed.

At least one air de-oiling insert according to the invention can advantageously be arranged in the housing.

Otherwise apply in connection with the inventive air de-oiling and the Air deoiling device according to the invention and their respective advantageous refinements, corresponding features and advantages to one another and vice versa. The individual features and advantages can of course be combined with one another, whereby further advantageous effects can be achieved which go beyond the sum of the individual effects.

Figure list

• 1 einen Längsschnitt einer Luftentölvorrichtung mit einem Gehäuse, in dem ein Luftentöleinsatz angeordnet ist;
• 2 einen Längsschnitt des Luftentöleinsatzes aus 1.

Further advantages, features and details of the invention result from the following description, in which an embodiment of the invention is explained in more detail with reference to the drawing. The person skilled in the art will expediently also consider the features disclosed in combination in the drawing, the description and the claims in combination and combine them into useful further combinations. They show schematically:

• 1 a longitudinal section of an air deoiling device with a housing in which an air deoiling insert is arranged;
• 2nd a longitudinal section of the air de-oiling insert 1 .

In the figures, the same components are provided with the same reference symbols.

Embodiment (s) of the invention

In 1 is an air de-oiling device 10th shown in a longitudinal section. With the air de-oiling device 10th air contaminated with oil can be freed of oil. The oil can be carried along with the air, for example in the form of an oil mist.

The air de-oiling device 10th can be used, for example, in an oil-lubricated compressor for the de-oiling of compressed air or an internal combustion engine for the de-oiling of crankcase air.

The air de-oiling device 10th includes an openable housing 12th in which an air de-oiling insert 14 is arranged interchangeably.

The housing 12th includes a housing pot 16 with an installation opening 18th for air de-oiling 14 . The installation opening 18th is with a removable housing cover 20th locked. The air de-oiling device is in normal operation 10th arranged so that the housing pot 16 , as in 1 shown, is located spatially below.

Through a bottom of the housing pot 16 extends a tubular air inlet 22 for air to be freed from oil. The air intake 22 is exemplary coaxial to an imaginary axis 24th of the housing 12th and the de-oiling insert 14 arranged.

If “radial”, “axial”, “coaxial”, “circumferential” or the like is referred to in the following, this refers to the axis, unless stated otherwise 24th .

Inside the case 12th is the air intake 22 from a circumferentially connected partition 26 surround. The partition 26 is in one piece with the bottom of the housing pot 16 educated. The partition 26 separates an oil pre-separation room 28 , radially inside, from an oil separator room 30th , radially outside. The partition 26 is designed as an example in the form of a coaxial circular cylinder jacket. At its free front edge, the partition has 26 a sealing surface 32 which is aligned axially, for example. The axial extent of the partition 26 is greater than the axial extent of the section of the air inlet 22 that is inside the housing pot 16 runs.

Through the partition 26 runs an oil connection 34 which the oil pre-separation room 28 with the oil separator room 30th connects. The oil connection 34 is located near the bottom of the housing pot 16 . The oil connection 34 has a valve 36 with which the oil connection 34 can be closed in one direction. The valve 36 can for example be designed as a check valve. The forward direction 38 of the valve 36 is from the oil pre-separation room 28 to the oil separator room 30th directed.

At the free edge of the air inlet 22 inside the case 12th is a so-called pre-separator 40 attached to the separation of oil. The pre-separator 40 is with its concave side the air intake 22 facing.

Slightly above the free edge of the partition 26 is an annular partition 42 arranged. The partition 42 extends circumferentially and from the radially inner peripheral side of the housing pot 16 radially inwards. The partition is radially outside 42 in one piece with the peripheral wall of the housing pot 16 connected.

The partition 42 has a central partition opening 44 which is coaxial circular, for example. The diameter of the partition opening 44 is larger than the diameter of the partition 26 . In the partition opening 44 is the air de-oiling insert 14 used.

The partition 42 also has a variety of oil ports 46 . The partition 42 separates the oil post-separation room 30th in the axial direction of one clean air room above 48 . The clean air room 48 surrounds the air de-oiling insert 14 circumferentially. The oil outlet openings 46 connect the clean air room 48 with the oil separator room 30th .

Somewhat below the partition 42 performs an oil drain 50 for the separated oil through the peripheral wall of the housing pot 16 from the oil separator room 30th out.

The free edge of the housing pot 16 which is the installation opening 18th surrounds, is bent radially outwards. The end face of the free edge has a sealing surface 52 on.

The housing cover 20th has a central, exemplary coaxial, air outlet 54 for oil-free air. The housing cover has in the area of its radially outer edge 20th on its the housing pot 16 axially facing side a sealing surface 56 on. The sealing surface on the cover side 56 is aligned when the housing cover is installed 20th with the pot-side sealing surface 52 at the free edge of the housing pot 16 .

Below is the air de-oiling application 14 which in 2nd is shown in detail, explained in more detail.

Air de-oiling 14 includes a de-oiling medium 58 , which has an insert interior 60 with respect to the axis 24th circumferentially surrounds. With the de-oiling medium 58 it can be, for example, a coalescing medium, a filter medium or another medium suitable for separating oil. Several identical or different media can also be provided. In addition to the de-oiling medium 48 a filter medium for filtering the air or a combined medium which is suitable both for filtering the air and for de-oiling can also be provided. The de-oiling medium is an example 58 designed as a coaxial circular hollow cylinder.

At the bottom of the housing pot 16 facing end of the oil removal medium 58 is an annular inlet end plate 62 attached. The outer diameter of the inlet end plate 62 is slightly smaller than the diameter of the partition opening 44 . The inlet end plate 62 has a central, exemplary coaxial, inlet opening 64 for the air to be cleared of oil to the interior of the application 60 on. The diameter of the inlet opening 64 is smaller than the diameter of the partition 26 .

On the de-oiling medium 58 axially opposite side of the inlet end plate 62 is a ring seal 66 attached. The ring seal 66 is located radially between the edge of the inlet opening 64 and the radially outer edge of the inlet end plate 62 .

The diameter of the ring seal 66 corresponds to the diameter of the sealing surface 32 the partition 26 . With air de-oiling insert installed 14 is the ring seal 66 sealing in the axial direction on the sealing surface 32 on. The ring seal 66 seals together with the sealing surface 32 the oil pre-separator room 28 and thus the raw air side of the air de-oiling insert 14 against the oil separator room 30th and thus against the clean air side.

On the front of the oil removal medium 58 which of the inlet end plate 62 axially opposite is an outlet end plate 68 attached. The outlet end plate 68 is completely closed and thus closes the interior of the application 60 on this face.

With the outlet end plate 68 is a mounting flange 70 connected. With the mounting flange 70 is the air de-oiling insert 14 in the housing 12th , respectively between the edge of the housing pot 16 and the housing cover 20th , held and fastened.

The mounting flange 70 includes an attachment portion 72 and a connecting section 74 . The fastening section 72 is about the connecting section 74 with the outlet end plate 68 example connected in one piece.

The connecting section 74 extends from the radially outer edge of the outlet end plate 68 of the de-oiling medium 58 axially away. The connecting section 74 has, for example, a coaxial circular cylindrical shape.

The connecting section 74 has a variety of air passage openings 76 on. The air passage openings 76 connect the clean air room 48 with an air outlet space 78 . The air outlet space 78 is from the connecting section 74 on the the interior 60 axially opposite side of the outlet end plate 68 surround.

The connecting section 74 has the shape of an annular disc, which is arranged coaxially as an example. The radially inner edge of the mounting section 72 is with the edge of the connecting section 74 which of the outlet end plate 68 is turned away, connected. The fastening section 72 extends circumferentially and from the free edge of the connecting section 74 radially outwards. A radially outer diameter of the mounting section 72 corresponds approximately to the radially outer diameter of the cup-side sealing surface 52 at the edge of the housing pot 16 and the cover-side sealing surface 56 of the housing cover 20th . The fastening section is in the region of the radially outer edge 72 on both axially opposite faces as a flange sealing surface 80 and 82 educated. The flange sealing surfaces 80 and 82 each extend circumferentially and in the radial direction. They are aligned axially.

With the housing cover installed 20th becomes the mounting section 72 with the flange sealing surfaces 80 and 82 between the free edge of the housing pot 16 and the housing cover 20th , respectively between the pot-side sealing surface 52 and the cover-side sealing surface 56 , pinched and held. The sealing surface on the pot side seals 52 with the flange sealing surface 82 and the cover-side sealing surface 56 with the flange sealing surface 80 each against the environment.

Furthermore, with the air de-oiling device installed 10th the face of the mounting section 72 which the de-oiling medium 58 is axially facing away from the housing pot 16 axially facing inside of the housing cover 20th on. The housing cover 20th limits the air outlet space 78 on the outlet end plate 68 axially opposite side. The air outlet 54 leads out of the air outlet space 78 out.

The air de-oiling insert is used for installation 14 with the inlet end plate 62 ahead through the open installation opening 18th in the housing pot 16 inserted and in the partition opening 44 placed so that the ring seal 66 on the sealing surface 32 the partition 26 is present. The fastening section lies in this position 72 with the flange sealing surface 82 on the pot-side sealing surface 52 of the housing pot 16 . Then the housing cover 20th assembled.

During operation of the air de-oiling device, air to be freed from oil passes through the air inlet 22 in the housing 12th headed. The air flow inside the case 12th is in 1 indicated by corresponding solid arrows. The incoming air bounces at the end of the air inlet 22 against the concave side of the pre-separator 40 . The oil is due to the inertia on the concave side of the pre-separator 40 separated, gravity sinks down to the bottom of the oil pre-separation chamber 28 and is collected there. The air, partially freed from oil, flows around the concave side of the pre-separator 40 radially outwards and enters the oil pre-separation chamber 28 .

The air, which is partially freed from oil, from the oil pre-separation room 28 passes through the inlet opening 64 in the interior 60 . From there, the air flows through the de-oiling medium 58 from radially inside to radially outside and enters the clean air room 48 . When flowing through the de-oil medium 58 the oil still in the air is separated. The separated oil sinks on the radially outer circumferential side of the de-oil medium 58 following gravity downwards and passes through the oil passage openings 46 the partition 42 in the oil separator room 30th .

The oil-free air flows out of the clean air room 48 through the air passage openings 76 the connecting section 74 of the mounting flange 70 in the air outlet space 78 . From there, the oil-free air flows through the air outlet 54 and leaves the air de-oiling device 10th .

As soon as an oil level in the oil post-separation room 30th the oil drain 50 reached, the oil collected there is drained through the oil 50 returned to the compressor stage. That in the oil pre-separation room 28 Oil collected is, for example, due to the siphon effect in the oil post-separation room 30th sucked. The valve 36 prevents oil from the oil separation chamber 30th back to the oil pre-separator room 28 can reach.

QUOTES INCLUDE IN THE DESCRIPTION

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Patent literature cited

• DE 20109618 U1 [0003]

Claims (11)

Air de-oiling insert (14) of an air-de-oiling device (10) for separating oil contained in air, - with at least one de-oiling medium (58) which surrounds an insert interior (60) of the air-de-oiling insert (14) circumferentially with respect to an imaginary axis (24), - with one Inlet end plate (62), which is arranged on an axial end face of the at least one de-oiling medium (58) and has at least one inlet opening (64) to the insert interior (60), with an outlet end plate (68), which on one of the Inlet end plate (62) is arranged axially opposite end face of the at least one de-oiling medium (58) and closes the insert interior (60) there, characterized in that a mounting flange (70) is connected to the outlet end plate (68), with which the Air de-oiling insert (14) can be fastened in a housing (12) of the air de-oiling device (10). Air de-oiling after Claim 1 , characterized in that the mounting flange (70) surrounds an air outlet space (78) or an air inlet space which is located on the side of the outlet end plate (68) axially facing away from the insert interior (60) with respect to the axis (24). Air de-oiling after Claim 1 or 2nd , characterized in that the mounting flange (70) has an annular fastening section (72) which extends with respect to the axis (24) from radially inside to radially outside. Air de-oiling insert according to one of the preceding claims, characterized in that the mounting flange (70) has an annular connecting section (74) which extends axially away from the outlet end disk (68) on the side of the outlet end disk (68) axially remote from the de-oil medium (58). Air de-oiling insert according to one of the preceding claims, characterized in that the mounting flange (70) has at least one air passage opening (76) which connects an air-guiding space (48) surrounding the air de-oiling insert (14) to an air outlet space (78) or air inlet space which is located on the side of the outlet end plate (68) axially facing away from the insert interior (60) with respect to the axis (24). Air de-oiling insert according to one of the preceding claims, characterized in that the mounting flange (70) has an annular fastening section (72) which is connected to the outlet end plate (68) via an annular connecting section (74) of the mounting flange (70), wherein the connecting section (74) extends circumferentially with respect to the axis (24) and axially away from the outlet end plate (68) with at least one directional component, and the fastening section (72) extends circumferentially with respect to the axis (24) and from radially inward to radially outward . Air de-oiling insert according to one of the preceding claims, characterized in that the mounting flange (70) has at least one sealing part (80, 82) which cooperate in a sealing manner with at least one corresponding sealing part (52, 56) on the side of the housing (12) of the air-de-oiling device (10) can. Air de-oiling insert according to one of the preceding claims, characterized in that the inlet end plate (62) has at least one sealing part (66) which can cooperate in a sealing manner with at least one corresponding sealing part (32) on the housing (12) side of the air-de-oiling device (10). Air deoiling device (10) for separating oil contained in air, with a housing (12) which has at least one air inlet (22) for air to be freed from oil, at least one air outlet (54) for air freed from oil and at least one oil drain (50 ) for oil separated from the air, wherein at least one air de-oiling insert (14) is or can be arranged in the housing (12) such that it separates the at least one air inlet (22) from the at least one air outlet (54), characterized that the at least one air inlet (22) and the at least one air outlet (54) are on axially opposite sides with respect to an axis (24) of the at least one air de-oiling insert (14). Air de-oiling device after Claim 9 , characterized in that the housing (12) has at least one oil pre-separation chamber (28) and at least one oil post-separation chamber (30) which are connected by means of at least one oil connection (34) which can be closed in at least one direction, wherein the oil pre-separation chamber (28) is located in front of the at least one air de-oiling insert (14) with respect to the air flow and the oil post-separation chamber (30) is located behind the at least one air de-oiling insert (14). Air de-oiling device after Claim 9 or 10th , characterized in that the housing (12) has at least one sealing part (32, 52, 56) which can cooperate in a sealing manner with at least one corresponding sealing part (66, 80, 82) on the side of the at least one air de-oiling insert (14).

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