DE102017210321A1 - separating - Google Patents

Abstract

In order to provide a separation device which is simple in construction and has an optimized separation effect, it is proposed that the separation device comprises: a housing which surrounds an at least approximately cylindrical separation space of the separation device; a rotary separator for separating impurities, in particular liquid droplets, from the raw gas stream, wherein the rotary separator is arranged rotatably about an axis of rotation in the separating chamber; a supply device for supplying a raw gas flow to the rotary separator; a discharge device for discharging a clean gas flow from the separation chamber; a drive device for driving the rotary separator, wherein the drive device is at least partially integrated in a housing part of the housing of the separation device.

Description

The present invention relates to a separation device, in particular for separating impurities, for example a liquid, from a raw gas stream. For example, oil can be separated from an oil-mist-containing gas stream by means of such a separation device. The separation device is thus particularly suitable for use in a vehicle for cleaning crankcase gases.

Separating devices are for example from the DE 10 2012 104 598 A1 , of the DE 199 14 166 A1 , of the DE 699 06 019 T2 , of the DE 103 50 562 A1 , of the EP 1 532 352 A1 , of the US 6,755,896 A and the DE 10 2013 207 058 A1 known.

The present invention has for its object to provide a separation device, which is simple in construction and has an optimized separation efficiency.

This object is achieved by a separation device according to claim 1.

• ein Gehäuse, welches einen zumindest näherungsweise zylinderförmigen Abscheideraum der Abscheidevorrichtung umgibt;
• einen Rotationsabscheider zum Abscheiden von Verunreinigungen, insbesondere Flüssigkeitstropfen, aus dem Rohgasstrom, wobei der Rotationsabscheider um eine Rotationsachse drehbar in dem Abscheideraum angeordnet ist;
• eine Zuführvorrichtung zum Zuführen eines Rohgasstroms zu dem Rotationsabscheider;
• eine Abführvorrichtung zum Abführen eines Reingasstroms aus dem Abscheideraum.

A separation device for separating impurities from a raw gas stream preferably comprises the following:

• a housing which surrounds an at least approximately cylindrical separating space of the separating device;
• a rotary separator for separating impurities, in particular liquid droplets, from the raw gas stream, wherein the rotary separator is arranged rotatably about an axis of rotation in the separating chamber;
• a supply device for supplying a raw gas flow to the rotary separator;
• a discharge device for discharging a clean gas flow from the separation chamber.

It may be favorable if the separating device further comprises an at least approximately hollow-cylindrical intermediate wall, which is arranged in particular between a housing wall of the housing surrounding the separating chamber in the radial direction and the rotary separator.

In one embodiment of the invention can be provided that the housing comprises one or more bearings for storage of the separation unit.

The rotary separator comprises or forms in particular a separating unit, which preferably comprises a stack of flow elements.

The flow elements are in particular stackable cylindrical disks, which are provided with a structure for flow guidance. In particular, the structure comprises involute flow channels.

Preferably, the stack of flow elements together with a shaft for receiving the stack of flow elements and one or more bearing elements as a preassembled unit between two or more housing parts of the housing can be introduced.

The separation device is particularly suitable for use in or on an internal combustion engine or in combination with an internal combustion engine.

Preferably, oil can be separated from a gas stream by means of the separating device, which is removed, for example, from a crankcase of the internal combustion engine.

In further embodiments of the invention it can be provided that additional components, for example one or more float valves and / or one or more non-return valves, are integrated into the housing, in particular one or more housing parts. For example, it can be provided that one or more float valves and / or one or more non-return valves are provided in a drainage channel or in a plurality of drainage channels in order to avoid an undesired backflow of separated liquid.

Preferably, a housing part or a plurality of housing parts comprise one or more attachment points, in particular attachment points, for fixing the housing parts to one another and / or for fixing the deposition device to a device producing raw gas, in particular an internal combustion engine.

One or more attachment points differ from a mounting flange in particular in that the mounting flange in addition to the attachment for fluid removal, in particular liquid removal, is used, while the attachment points are preferably used exclusively for attachment.

In one embodiment of the invention it can be provided that the separation device comprises a drive device in which a Motor device is used to drive the separation unit.

The engine device may include, for example, an electric motor.

The motor device can be fixed to the housing, for example, by means of a screw flange, a clamping device and / or a bayonet closure.

Furthermore, other types of fastening, such as a screw, can be provided.

The engine device and the separation unit are preferably coupled or coupled to one another by means of a coupling, in particular a plug-in coupling, an Oldham coupling, etc.

A raw gas supply can be provided, for example, with respect to the axis of rotation of the separation unit in the axial direction or also perpendicular thereto.

A Rohgasabführung is preferably carried out in parallel, in particular offset parallel to the axis of rotation of the separation unit.

It may be advantageous if between the intermediate wall and the rotary separator, an inner gap is formed, which is in particular at least approximately hollow cylinder-shaped.

Alternatively or additionally, it may be provided that between the intermediate wall and the housing wall, an outer gap is formed, which is preferably at least approximately hollow cylinder-shaped.

The outer gap preferably surrounds the inner gap.

In particular, the outer gap and the inner gap are arranged concentrically with respect to the rotational axis of the rotary separator.

The inner gap and the outer gap in particular each form an annular channel.

A main flow direction in which a gas flow is effectively passed through the inner gap or the outer gap is preferably aligned parallel to the axis of rotation.

The raw gas stream is fed to the stack of flow elements preferably radially inward along the axis of rotation.

At a radially outward end lying in the axial direction, the clean gas stream cleaned by means of the rotary separator preferably leaves the inner gap between the stack of flow elements and the intermediate wall.

The intermediate wall preferably forms a separation wall, on which impurities deposited in the stack of flow elements, which are discharged radially outward from the stack of flow elements, are deposited.

An averaged gap thickness of the inner gap preferably varies in an axial direction parallel to the axis of rotation. In particular, a steady and / or continuous increase or decrease in the average gap thickness can be provided.

The gap thickness is averaged in particular in the circumferential direction.

For example, varying gap thicknesses, in particular averaged over the circumferential direction, can result from longitudinally dimensioned depressions, recesses or other surface variations running along the axial direction in the intermediate wall.

In particular, it may be provided that the average gap thickness of the inner gap increases along a main flow direction of the gas flow in the inner gap.

Alternatively or additionally, it can be provided that an average gap thickness of the outer gap varies in an axial direction running parallel to the axis of rotation, in particular continuously and / or continuously increases or decreases.

The intermediate wall is preferably arranged on a housing part of the housing and / or formed integrally with a housing part of the housing.

Housing parts are in particular components of the housing, which limit the separation space and / or other chambers of the housing and / or separate from each other.

The intermediate wall is preferably integrated in a housing part or formed integrally therewith. Furthermore, a separate from a housing part intermediate wall may be provided as a separate component.

The intermediate wall is preferably formed from a plastic material. Especially it can be provided that the intermediate wall is designed as an injection-molded component, for example a plastic injection-molded component.

Also, one or more housing parts, in particular all housing parts, are preferably formed from a plastic material, for example, formed as a plastic injection-molded components.

It may be favorable if the intermediate wall is fixed with respect to an axial direction running parallel to the axis of rotation at one end to a ceiling section of the housing and / or of the separating chamber.

Preferably, the intermediate wall is fluid-tightly connected to the ceiling portion, so that in particular in this area there is no fluid connection between the inner gap and the outer gap.

It may be favorable if the intermediate wall can be flowed around at a (further) end of the clean gas flow with respect to an axial direction running parallel to the axis of rotation.

The intermediate wall is thus formed at one end with a free end and / or provided with openings and / or recesses in the intermediate wall. The clean gas flow is deflected at this end and / or by means of this end and one or more housing parts of the housing. Preferably, a Strömungsumlenkabschnitt is thereby formed, by means of which the clean gas flow in particular by at least approximately 180 ° can be deflected.

The directions of flow in the inner gap and in the outer gap are preferably substantially opposite to each other.

It can be provided that the intermediate wall comprises one or more flow guide elements, in particular ribs or deflection elements.

For example, in the radial direction outwardly projecting fins may be provided which support the intermediate wall, for example on the housing wall and / or connect to the housing wall and / or optimize a flow in the outer gap. Preferably, this allows a swirl in the guided through the outer gap gas flow can be reduced or avoided altogether.

It may be advantageous if the intermediate wall comprises one or more drainage projections for the removal of deposited impurities. The one or more drain projections preferably extend in an axial direction parallel to the axis of rotation.

For example, it can be provided that the one or more drainage projections extend away from a hollow cylindrical section of the intermediate wall.

The one or more drain projections preferably have a contact surface for abutment with a housing part of the housing, so that in particular at the one or more drain projections discharged impurities are preferably feasible without interim free fall in a collecting channel of the separator.

The contact surface may also allow a fixed connection, for example a clamping connection or welded connection, between the intermediate wall and a further housing parts of the housing.

It may be favorable if the intermediate wall comprises at least one discharge edge for discharging impurities flowing along the intermediate wall.

The at least one run-off edge is designed in particular as an interruption or step in an otherwise substantially circular-cylinder-jacket-shaped inner surface of the intermediate wall.

The at least one run-off edge is, for example, at least partially spirally formed and / or arranged.

Preferably, the at least one run-off edge has a U-shaped, L-shaped, C-shaped or V-shaped cross-section taken in the radial direction.

It may be favorable if one or more discharge edges terminate at one or more discharge projections of the intermediate wall.

The one or more drainage projections in particular form oil transfer points or tabs, which allow optimized oil removal.

In one embodiment of the invention can be provided that the intermediate wall in the axial direction has a greater extent than a stack of flow elements of the rotary separator.

In one embodiment of the invention may further be provided that a drive device is provided for driving the rotary separator, wherein the drive device is preferably at least partially integrated in a housing part of the housing of the deposition device.

It may be favorable if at least part of the drive device is fixed in a form-fitting manner in the housing part.

At least part of the drive device is preferably embedded in the production of the housing part in the same, in particular cast and / or overmoulded.

In particular, it can be provided that the drive device comprises an electric motor, wherein a stator of the electric motor integrated into the housing part of the housing, in particular cast and / or molded.

It may be advantageous if the housing part comprises one or more fastening points for fastening one or more bearing elements of a bearing device for mounting the rotary separator.

The one or more attachment points are preferably formed in the housing part and / or formed by shaping the housing part.

In particular, both the integration of at least one part of the drive device and the production of the one or more bearing elements during the manufacture of the housing part, for example in an injection molding process, are provided. This preferably results in an optimized positioning of the one or more bearing elements relative to the at least one integrated part of the drive device. Furthermore, this can preferably be reduced in terms of their number interfaces and sealing surfaces.

In one embodiment of the invention it can be provided that the housing part has one or more integrated lines and / or one or more integrated channels, in particular for signal transmission, for the transmission of electrical energy and / or for the guidance of fluids, in particular of the raw gas stream and / or the clean gas stream and / or a stream of separated impurities, in particular oil.

It may be advantageous if the housing part comprises one or more plug connections for one or more signal plugs and / or power plugs.

A signal connector is in particular part of a signal line for transmitting control signals or other electrical signals.

A power connector is in particular part of a power line for transmitting electrical energy.

The one or more plug connections are preferably integrated in the housing part, in particular fixed in the manufacture of the housing part therein, preferably encapsulated and / or encapsulated.

It can be advantageous if the housing part comprises one or more lines and / or channels which connect the one or more plug connections with the drive device integrated at least partially in the housing part, wherein the one or more lines and / or channels are preferably completely in integrated the housing part and are inaccessible from outside the housing part. As a result, an expense for sealing the lines and / or channels can preferably be minimized.

The housing part is preferably pot-shaped or plate-shaped.

Preferably, the housing part limits the separation space in an axial direction with respect to the axis of rotation.

The housing part preferably also comprises or forms a drainage device and / or a collecting channel for impurities deposited in the separation chamber.

It can be advantageous if a rotor of an electric motor of the drive device projects into the housing part, in particular into a recess of the housing part which is surrounded by the stator.

It can be provided that the housing part comprises at least a part of the drive device, in particular the stator, one or more lines, one or more channels, one or more plug connections and / or one or more attachment points, which due to the integration into the housing part, in particular due to the encapsulation and / or extrusion coating, are sealed to the outside to an environment of the separator.

It may be favorable if at least one bearing point, for example at least one fastening point for fastening one or more bearing elements of a bearing device, adjacent, in particular in the axial direction successively, are arranged to the integrated rotor in the housing part. Component tolerances can hereby preferably be reduced, in particular since component-spanning interfaces and parting planes can be reduced.

The connection of the stator and / or the receiving of the stator and at least a part of the storage of the rotary separator, in particular the Shaft, are preferably realized by means of one and the same component, in particular of the housing part, and thus preferably matched exactly. A gap between the rotor and the stator can thereby be reduced and / or reproduced reliably.

In particular, the integration of a drainage in the housing part may preferably provide further advantages, in particular the optimal space utilization and the elimination of additional components and / or seals. A manufacturing effort can also be reduced thereby preferably.

In one embodiment of the invention it can be provided that the separation device comprises at least one additional separator, which is preferably integrated in the housing.

The at least one additional separator is, in particular, not a rotating separator, but rather an separator which is effective, for example, by flow diversion and / or due to other physical and / or chemical effects for the purification of the crude gas stream.

The separation device comprises, for example, at least one pre-separator upstream of the rotary separator and / or at least one downstream separator downstream of the rotary separator.

The pre-separator and / or the Nachabscheider are preferably integrated in the housing.

The pre-separator and the Nachabscheider are preferably additional separator.

It may be favorable if the at least one additional separator adjoins the separating chamber and the rotary separator arranged therein in an axial direction running parallel to the axis of rotation.

The at least one additional separator preferably comprises one or more chambers which are different from the separation chamber, in particular an antechamber, a pre-separation space, a post-separation space and / or an outlet space.

It may be favorable if at least one chamber is separated from the separation space by means of a separating element, in particular an additional housing part.

Furthermore, it can be provided that the at least one chamber is formed by the separating element and / or bordered and / or bounded.

It may be favorable if the at least one chamber comprises at least one separating element and / or adjacent to at least one separating element.

At least one separation element is in particular a baffle element, a deflection element and / or a flow-through element.

Furthermore, it can be provided that at least one separation element comprises a baffle element, a deflection element and / or a flow-through element.

An impact element is, for example, a baffle plate.

A flow-through element is in particular a fleece, which is flowed through by the gas stream to be cleaned.

It may be favorable if one or more baffle plates or other pre-separation elements and / or Nachabscheideelemente are integrated into the at least one additional separator.

Oil droplets having a diameter of at least about 1 μm, preferably at least about 3 μm, for example at least about 5 μm, can preferably be deposited by means of the at least one additional separator. The fine separation of oil droplets in the range below the stated values is preferably carried out by means of the rotary separator.

It can be provided that the separating device comprises both an additional separator formed as a pre-separator and a secondary separator designed as a secondary separator, wherein the two additional separators are arranged on a common side of the rotary separator and / or the housing with respect to an axial direction running parallel to the axis of rotation and / or are formed.

A drive device for driving the rotary separator is preferably arranged and / or formed on an opposite side of the additional separator side.

For example, in the case of a substantially vertically oriented axis of rotation can be provided that the pre-separator and the Nachabscheider are arranged above the rotary separator, while the drive device is arranged below the rotary separator.

However, it may also be provided a reverse arrangement.

The pre-separator and the Nachabscheider are preferably formed by different and spatially separated segments or portions of a substantially cylindrical interior of the housing.

In particular, it can be provided that this substantially cylindrical interior on the one hand and the separation chamber on the other hand have a common continuous substantially hollow cylindrical housing wall of the housing and / or are thereby limited.

In one embodiment of the invention can be provided that the rotary separator is associated with a drainage for discharging deposited by means of the rotary separator impurities.

The at least one additional separator may be associated with a different further drainage or else the same drainage, in particular for the removal of impurities deposited by means of the at least one additional separator.

The additional separator can, for example, be fluid-effectively coupled or coupled to the drain assigned to the rotary separator, in particular in such a way that impurities separated off by means of the additional separator can be discharged by means of the drainage associated with the rotary separator. In this case, in particular, an optional opening and closing of the fluid-effective coupling can be provided, in particular by means of one or more valve elements.

The at least one additional separator is preferably connectable by means of one or more valve elements, in particular non-return valves, for example umbrella valves, to the drainage, which is assigned to the rotary separator and / or the additional separator, and can be separated therefrom.

It can be provided that at least one additional separator is designed as a flow guide integrated into the housing.

Furthermore, it can be provided that at least one additional separator is integrated into a flow guide integrated into the housing.

For example, it may be provided that a part of the space provided for the clean gas guide is used for the pre-separator. As a result, a separation device with a small space requirement can be realized.

In a further embodiment of the invention can be provided that the deposition device comprises one or more cover elements.

The one or more cover elements are preferably themselves housing parts or fixed on one or more housing parts additional components.

The one or more cover elements preferably cover openings, recesses and / or recesses in one or more housing parts of the housing for completing the housing and / or closing an interior of the housing.

By using such cover elements, in particular an efficient and optimized flow guidance can be realized within the housing.

One or more cover elements preferably delimit the separation space and / or a different part of the interior of the housing from the separation space.

It can be provided that one or more cover elements together with one or more housing parts form a flow guide for the raw gas stream and / or the clean gas stream.

It can be advantageous if one or more cover elements each have one or more connecting pieces of the feed device, the discharge device and / or a drainage for the removal of separated impurities.

One or more cover elements preferably adjoin one or more housing parts of the housing with respect to the axis of rotation of the rotary separator in the axial direction.

Alternatively or additionally, it can be provided that one or more cover elements define an interior of the housing with respect to the rotational axis of the rotary separator in the axial direction.

Furthermore, it can be provided that one or more cover elements with respect to the rotational axis of the rotary separator in the radial direction adjacent to one or more housing parts of the housing and / or limit an interior of the housing with respect to the rotational axis of the rotary separator in the radial direction.

By means of a housing part, which surrounds the separation space, for example substantially hollow cylindrical, and by means of one or more Cover elements, which adjoin this housing part in the radial or axial direction, in particular with respect to the rotational axis of the rotary separator, preferably at least one drainage space, in particular a main drainage space and / or a secondary drainage space, is formed for receiving and / or removing deposited impurities.

This at least one cover element is then in particular a drainage cover.

The drainage cover may, for example, have one or more connecting pieces for removing deposited impurities.

The main drainage space is preferably fluidly connected to the separation space and / or directly adjacent to the separation space.

It may be favorable if the main drainage space in the use state of the separation device is arranged directly below the separation space.

The main drainage space preferably forms a collection area for contaminants separated by means of the rotary separator.

The secondary drainage space is preferably fluidly connected to a pre-separator and / or a Nachabscheider or connectable and / or directly adjacent to the pre-separator and / or the Nachabscheider. Furthermore, it can be provided that the auxiliary drainage space adjoins a pre-separator and / or a Nachabscheider, in particular in the use state of the separation device is arranged directly under a pre-separator and / or a Nachabscheider.

It may be advantageous if one or more cover elements are welded to one or more housing parts. This allows a stable connection while ensuring the tightness can be achieved.

In one embodiment of the invention can be provided that one or more flow guides are formed by means of one or more cover elements, which in particular extend partially or completely outside a cylindrical outer contour of the separation space bounding the housing wall of the housing.

Furthermore, it can be provided that one or more flow guides are formed by means of one or more cover elements, which in particular extend partially or completely within a cylindrical outer contour of a housing wall delimiting the separation space.

The one or more cover elements are arranged lying further outward, in particular in the radial direction, than the housing wall of the housing. However, it can also be provided a flush or in the radial direction inwardly offset arrangement and / or fixing one or more cover elements.

It can be advantageous if one or more flow deflections and / or one or more separation elements are formed by means of one or more cover elements.

In particular, it can be provided that a separating effect is optimized by means of the one or more cover elements.

One or more cover elements preferably each comprise one or more valve elements or are each provided with one or more valve elements.

In particular, it may be provided that a cover element covering a secondary drainage space and / or main drainage space comprises or is provided with one or more valve elements. In particular, it can be provided that the one or more valve elements are provided with a check valve, in particular an umbrella valve, in order to prevent an undesired gas flow in certain operating states into or out of the secondary drainage space.

The separating device according to the invention is particularly suitable for use in a vehicle, in particular a motor vehicle.

The present invention therefore also relates to a vehicle, in particular a motor vehicle, for example a passenger car or truck.

The vehicle preferably comprises at least one separation device, in particular a separation device according to the invention.

The separation device is used in particular for cleaning crankcase gas of an internal combustion engine of the vehicle.

It can be provided that the separating device is mounted and / or aligned such that an axis of rotation of the rotary separator runs in a normal operation of the vehicle substantially horizontally or vertically.

The at least one additional separator is preferably arranged in the assembled state of the at least one separation device and in a normal use state of the vehicle directly above or laterally next to the separation chamber, in particular in a direct axial extension of the separation chamber.

A normal use state of the vehicle is, in particular, a state in which the vehicle is moved on a substantially horizontal plane.

Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

• 1 einen schematischen Längsschnitt durch eine erste Ausführungsform einer Abscheidevorrichtung, bei welcher eine eine Abscheideeinheit umgebende Zwischenwand zur Strömungsoptimierung vorgesehen ist;
• 2 eine schematische perspektivische Darstellung der Zwischenwand der Abscheidevorrichtung aus 1;
• 3 eine schematische Draufsicht auf ein mittleres Gehäuseteil der Abscheidevorrichtung, welches die Zwischenwand umfasst oder an welchem die Zwischenwand festgelegt ist;
• 4 eine der 1 entsprechende schematische Darstellung einer zweiten Ausführungsform einer Abscheidevorrichtung, bei welcher ein Vorabscheider, ein Nachabscheider und eine in ein Gehäuseteil integrierte Antriebsvorrichtung vorgesehen sind;
• 5 eine der 1 entsprechende schematische Darstellung einer dritten Ausführungsform einer Abscheidevorrichtung, bei welcher eine alternative Ausgestaltung des Vorabscheiders vorgesehen ist;
• 6 eine vergrößerte Darstellung eines Bodenbereichs einer vierten Ausführungsform einer Abscheidevorrichtung, bei welcher eine alternative Ausgestaltung des Gehäuseteils zur Integration der Antriebsvorrichtung vorgesehen ist;
• 7 eine der 6 entsprechende schematische Darstellung einer fünften Ausführungsform einer Abscheidevorrichtung, bei welcher das Gehäuseteil, in welches die Antriebsvorrichtung integriert ist, mit weiteren Strömungskanälen und/oder Anschlüssen versehen ist;
• 8 eine schematische perspektivische teiltransparente Darstellung einer sechsten Ausführungsform einer Abscheidevorrichtung, bei welcher eine im Wesentlichen horizontal ausgerichtete Rotationsachse eines Rotationsabscheiders der Abscheidevorrichtung vorgesehen ist;
• 9 eine schematische perspektivische Explosionsdarstellung der Abscheidevorrichtung aus 8;
• 10 eine weitere schematische perspektivische Explosionsdarstellung der Abscheidevorrichtung aus 8;
• 11 eine schematische perspektivische Darstellung der Abscheidevorrichtung aus 8, mit Blick auf einen teilweise geschnittenen Vorabscheide- und Auslassbereich;
• 12 eine der 1 entsprechende schematische Darstellung der Abscheidevorrichtung aus 8;
• 13 eine schematische Seitenansicht der Abscheidevorrichtung aus 8, wobei das Gehäuse der Abscheidevorrichtung geschnitten dargestellt ist;
• 14 einen schematischen Querschnitt durch den Vorabscheide- und Auslassbereich der Abscheidevorrichtung aus 8;
• 15 einen weiteren schematischen Längsschnitt durch die Abscheidevorrichtung aus 8; und
• 16 einen weiteren schematischen Querschnitt durch die Abscheidevorrichtung aus 8.

In the drawings show:

• 1 a schematic longitudinal section through a first embodiment of a separation device in which a separating unit surrounding an intermediate wall for flow optimization is provided;
• 2 a schematic perspective view of the intermediate wall of the separator from 1 ;
• 3 a schematic plan view of a central housing part of the separating device, which comprises the intermediate wall or on which the intermediate wall is fixed;
• 4 one of the 1 corresponding schematic representation of a second embodiment of a separation device in which a pre-separator, a Nachabscheider and a drive unit integrated in a housing part are provided;
• 5 one of the 1 corresponding schematic representation of a third embodiment of a separation device, in which an alternative embodiment of the pre-separator is provided;
• 6 an enlarged view of a bottom portion of a fourth embodiment of a separation device, in which an alternative embodiment of the housing part for integrating the drive device is provided;
• 7 one of the 6 corresponding schematic representation of a fifth embodiment of a separation device in which the housing part, in which the drive device is integrated, is provided with further flow channels and / or connections;
• 8th a schematic perspective partially transparent representation of a sixth embodiment of a separation device in which a substantially horizontally oriented axis of rotation of a rotary separator of the separator is provided;
• 9 a schematic perspective exploded view of the separation device 8th ;
• 10 a further schematic exploded perspective view of the separator from 8th ;
• 11 a schematic perspective view of the separation device 8th , overlooking a partially cut Vorabscheide- and outlet area;
• 12 one of the 1 corresponding schematic representation of the separation device 8th ;
• 13 a schematic side view of the separator 8th wherein the housing of the separation device is shown in section;
• 14 a schematic cross section through the Vorabscheide- and outlet of the separator 8th ;
• 15 a further schematic longitudinal section through the separator 8th ; and
• 16 a further schematic cross section through the separation device 8th ,

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

One in the 1 to 3 illustrated first embodiment of a whole as 100 designated separating device is used in particular for vehicles and is there preferably for the separation of liquid droplets, in particular oil mist, from a raw gas stream, in particular crankcase gas.

The separation device 100 includes a housing 102 which is a separation room 104 surrounds.

The housing 102 is in particular of several housing parts 103 educated. The housing parts 103 are in particular plastic injection-molded components, which are interconnected, for example by means of plastic welding material fit and fluid-tight.

The separation room 104 is in particular substantially cylindrical.

In the separation room 104 is a separation unit 106 rotatably mounted.

The separation unit 106 includes a stack 108 from flow elements 110 , which by means of a wave 112 rotatable on the housing 102 is stored.

By means of the stack 108 from flow elements 110 in particular numerous flow channels are formed, which are formed, for example, involute and one in the radial direction of the shaft 112 facing Zuführabschnitt 114 of the pile 108 from flow elements 110 with a radial direction of the shaft 112 remote Abführabschnitt 116 of the pile 108 from flow elements 110 connect.

Thus, in particular in the region of the feed section, these flow channels can be used 114 fed raw gas in the radial direction outwards and finally on the discharge section 116 be dissipated.

The flow elements 110 and thus also the flow channels are preferably designed so that by the rotation of the shaft 112 together with the stack 108 from flow elements 110 around a rotation axis 118 gives a fluid-separating effect. Preferably, liquid droplets, in particular oil droplets, are deposited from the raw gas, so that in the region of the discharge section 116 on the one hand liquid oil and on the other hand oil mist largely freed clean gas from the stack 108 from flow elements 110 is dissipated.

In the in the 1 to 3 illustrated embodiment of the separation device 100 is the raw gas to be purified via a feeder 120 for example, in an area above the stack 108 from flow elements 110 in the case 102 initiated.

In particular, a connection piece 122 for supplying the raw gas to the housing 102 and / or in the housing 102 intended.

The connecting piece 122 is preferably formed and / or so within the housing 102 continued that the raw gas with respect to the axis of rotation 118 in the radial direction inwards and thus ultimately to the shaft 112 and the feeding section 114 of the pile 108 from flow elements 110 can be directed.

About a discharge device 124 can preferably clean oil largely exempt from oil mist from the housing 102 be dissipated.

Also the discharge device 124 For this purpose, preferably comprises a connecting piece 122 ,

The discharge device 124 is preferably also in an area above the stack 108 from flow elements 110 arranged.

For example, it can be provided that the discharge device 124 above the feeder 120 is arranged. Inside the case 102 is then preferably a flow guide provided such that the supplied raw gas and the clean gas to be discharged separately from each other and / or can be performed separately.

In particular, when both the feeding device 120 as well as the discharge device 124 above the stack 108 from flow elements 110 can be arranged, an undesirable flow guidance within the stack 108 from flow elements 110 result. In particular, in conventional embodiments of the separation device 100 happen that only the upper flow elements 110 in the pile 108 or at least mainly these are flowed through by the gas stream to be cleaned. This can lead to a reduced separation efficiency.

In the in the 1 to 3 illustrated embodiment of the separation device 100 Therefore, a flow optimization is provided.

The separation device 100 includes in particular an intermediate wall 126 which the stack 108 from flow elements 110 essentially surrounded by a cylinder jacket.

The partition 126 is spaced radially from the stack 108 from flow elements 110 arranged. In particular, there is an internal gap 128 between the stack 108 from flow elements 110 and the partition 126 educated.

Furthermore, the intermediate wall 126 in the radial direction preferably spaced from a housing wall 130 , which one the separation room 104 hollow cylindrical surrounded part of the housing 102 forms.

Between the partition 126 and the housing wall 130 is preferably an outer gap 132 educated.

The partition 126 preferably extends from a ceiling section 134 of the separating room 104 against the direction of gravity down and / or parallel to the axis of rotation 118 , in particular to over a lower end of the stack 108 from flow elements 110 out.

The partition 126 is preferably fluid-tight with the ceiling section 134 connected and / or integral with the ceiling section 134 forming housing part 103 of the housing 102 educated. The outer gap 132 opens at its upper end with respect to the direction of gravity preferably in an outlet space 136 to which the connection piece 122 the discharge device 124 followed.

That through the case 102 Passed gas must therefore due to the intermediate wall 126 into an area of the separation space 104 below the stack 108 from flow elements 110 be guided down until it passes over the outer gap 132 upwards over the outlet space 136 and the discharge device 124 can be dissipated.

The stack 108 from flow elements 110 is thereby preferably flowed through in an optimized manner. In particular, this is the preferred flow elements 110 essentially evenly used for the separation of liquid droplets, in particular oil mist.

The partition 126 preferably also forms a flow deflection 138 , whereby a further separation efficiency increase can be realized.

The flow deflection 138 is in particular a deflection by 180 °.

A flow direction in the inner gap 128 , in particular an effective flow direction, is thus preferably that of the outer gap 132 opposed.

The separation device 100 preferably comprises a drive device 140 for rotating the pile 108 from flow elements 110 ,

The drive device 140 includes in particular a motor device 142 , For example, an electric motor 144 , which over the shaft 112 with the pile 108 from flow elements 110 is coupled.

The stack 108 from flow elements 110 forms together with the wave 112 preferably a separation unit 106 , which by means of the electric motor 144 is drivable.

The separation unit 106 is thus in particular a rotary separator 148 or forms a rotary separator 148 ,

The separation device 100 further preferably comprises a drainage 150 , via which by means of the separation unit 106 separated fluid, in particular oil, from the separation chamber 104 of the housing 102 can be dissipated.

The drainage 150 includes in particular a collection channel 152 , which is formed substantially annular and below the stack 108 from flow elements 110 is arranged.

The partition 126 preferably forms a separation wall 154 on which from the stack 108 from flow elements 110 discharged, in particular ejected, oil droplets are deposited.

At the latest here, the oil droplets preferably agglomerate into larger drops of oil and flow downwards in the direction of gravity.

Due to the rotation of the separation unit 106 preferably with high speed results in the inner gap 128 a ring flow, which ultimately also on the separation wall 124 outflowing oil is accelerated and / or transported in the circumferential direction.

A reliable flow of the deposited oil in the direction of gravity down can be hindered by this.

The separation wall 154 , in particular the partition wall 126 , therefore preferably comprises one or more trailing edges 156 ,

The one or more edges 156 preferably extend both along the circumferential direction and in the axial direction with respect to the axis of rotation 118 ,

The one or more edges 156 are for example spirally formed and / or arranged.

In particular, one of the rotation axis 118 facing inside of the partition 126 with the one or more edges 156 Mistake.

By means of the one or more edges 156 preferably results in a barrier or an obstacle for the at the separation wall 154 flowing or pouring oil. In particular, a directed almost exclusively in the circumferential direction flow in favor of a in the Direction of gravity deflected downward flow.

That in the pile 108 from flow elements 110 The separated oil can thereby efficiently down to the drainage 150 be dissipated.

The partition 126 is flowed around at its lower end with respect to the direction of gravity of the gas flow. This may depend on the design of the partition 126 Occur that at the intermediate wall 126 down flowing oil is entrained with the gas stream and thereby again absorbed by the gas stream.

That in the area of the partition wall 126 already present as clean gas gas is thus contaminated again.

To avoid this effect or at least reduce it, the intermediate wall comprises 126 therefore preferably one or more drainage protrusions 158 which in particular in the axial direction, preferably substantially parallel to the axis of rotation 118 , over a hollow cylindrical portion of the partition 126 protrude, preferably protrude down in the direction of gravity.

The one or more drainage projections 158 preferably protrude into the collection channel 152 into it, allowing the separated oil directly into the collecting duct 152 can be initiated.

It may be provided that the one or more drainage projections 158 by means of a contact surface 160 on a further component, in particular housing part 103 , of the housing 102 adjoin. This can be avoided in particular that the partition 126 is completely flowed around at its lower end relative to the direction of gravity. A resumption of the already separated oil in the clean gas flow is thereby further minimized.

As in particular the schematic perspective view of the intermediate wall 126 in 2 can be seen, open the one or more edges 156 preferably in the region of the drainage projections 158 ,

It can be provided that the separation device 100 one or more flow guide elements 162 includes.

These are especially in the area of the outer gap 132 intended.

The one or more flow guide elements 162 are for example to the partition 126 and / or the housing wall 130 formed and / or integrally formed therewith.

One or more flow guide elements 162 are in particular as substantially parallel to the axis of rotation 118 aligned ribs formed.

By means of the flow guide elements 162 In particular, a return of the raw gas against the direction of gravity can be optimized upwards.

Preferably, the flow guide elements serve 162 for reducing and / or avoiding a swirl flow in the outer gap 132 ,

As in particular the 1 and 3 it can be seen, the intermediate wall 126 for example, together with the ceiling section 134 of the housing 102 and / or the housing wall 130 as a one-piece housing part 103 be educated.

This housing part 103 forms in particular with respect to the axis of rotation 118 in the axial direction central housing part 103m , to which in the axial direction on both sides more housing parts 103 connect. These further housing parts 103 are in particular by means of welding, in particular plastic welding, with this central housing part 103m connected.

In particular, one of the other housing parts 103 a lid member 164 to cover the outlet space 136 ,

In addition, another housing part 103 preferably a housing part 103 into which the collecting duct 152 is formed and / or which of the recording and / or attachment of the drive device 140 serves.

An in 4 illustrated second embodiment of a separation device 100 is different from the one in the 1 to 3 shown in the western embodiment in that the drive device 140 in a housing part 103 is integrated.

The housing part 103 is in particular a bottom section 166 of the housing 102 or forms the bottom section 166 of the housing 102 ,

The drive device 140 includes an electric motor 144 ,

The electric motor 144 includes in particular one in the housing part 103 firmly integrated stator 168 and one on the shaft 112 fixed rotor 170 ,

The wave 112 is preferably with a storage device 172 on the housing part 103 stored.

In particular, several bearing elements 174 , For example, ball bearings, for the storage of the shaft 112 including the rotor arranged thereon 170 on the housing part 103 intended.

The stator 168 and / or the bearing elements 174 are preferably in the manufacture of the housing part 103 integrated into the same, for example, encapsulated and / or encapsulated, and / or retrofitted, in particular screwed.

Due to the fact that the housing part 103 preferably both a storage device 172 as well as the stator 168 receives or includes, preferably results in a particularly accurate positioning of the shaft 112 and / or the rotor 170 relative to the stator 168 and / or the housing part 103 ,

Due to the fact that the housing part 103 also a floor section 166 or any other section, such as a ceiling section 134 , of the housing 102 forms preferably sealing points, joints, etc., which arise from the connection of several components together, can be reduced. This also preferably results in a higher manufacturing accuracy and / or a higher density of the housing 102 ,

As 4 can also be seen, in an alternative embodiment of the intermediate wall 126 be provided that an outer gap 132 not completely revolving open, but that the outer gap 132 is divided and on the one hand the raw gas supply and on the other hand the clean gas discharge serves.

About the outer gap 132 can thus on the one hand raw gas to the Zuführabschnitt 114 of the pile 108 from flow elements 110 be supplied. Furthermore, over the outer gap 132 separately therefrom, in particular fluid-effectively separated therefrom, purified clean gas against the direction of gravity on the stack 100 from flow elements 110 to be led upwards.

The separation device 100 according to the in 4 illustrated second embodiment preferably comprises a Nachabscheider 176 ,

The post-separator 176 is especially above the stack 108 from flow elements 110 arranged.

In particular, the raw gas-side part of the outer gap opens 132 preferably in the Nachabscheider 176 ,

The post-separator 176 serves in particular the slowing down of the clean gas flow and / or the additional flow and / or flow around separation elements (in 4 not shown).

Alternatively or in addition to a Nachabscheider 176 can be a pre-separator 178 be provided.

The pre-separator 178 is preferably between the connection piece 122 the feeder 120 and the feeding section 114 of the pile 108 from flow elements 110 arranged.

By means of the pre-separator 178 In particular, large fluid droplets, in particular oil droplets, can be separated from the raw gas to be purified before the raw gas enters the rotary separator 148 is initiated.

The pre-separator 178 preferably comprises one or more separation elements, in particular deflecting elements, impact elements, flow-through elements, etc.

The pre-separator 178 and the post-separator 176 are in particular in a common cylindrical area within the housing 102 , preferably above the stack 108 from flow elements 110 arranged.

In particular, take the pre-separator 178 and the post-separator 176 different segments, in particular complementary segments, a total circular cylindrical portion of the interior of the housing 102 to complete.

Incidentally, the in 4 illustrated second embodiment of the separation device 100 in terms of structure and function with in the 1 to 3 illustrated first embodiment, so that reference is made to the above description in this respect.

An in 5 illustrated third embodiment of a separation device 100 is different from the one in 4 illustrated embodiment essentially in that the pre-separator 178 via a connection opening 180 with the drainage 150 connected is.

In this way, preferably in the pre-separator 178 separated impurities, especially oil, drainage 150 be fed and discharged via the same.

However, there may also be separate drainages 150 on the one hand for the pre-separator 178 and on the other hand for the rotary separator 148 and / or the post-separator 176 be provided.

Incidentally, the in 5 illustrated third embodiment of the separation device 100 in terms of structure and function with the in 4 illustrated second embodiment, so that reference is made to the above description in this respect.

In the 6 and 7 are a fourth and a fifth embodiment of a separation device 100 shown.

According to 6 is provided that a housing part 103 into which a stator 168 the drive device 140 is integrated, at the same time still a plug connection 182 includes.

An electrical control and / or power supply of the stator 168 can thus over the plug connection 182 and the housing part 103 done without intermediate component interfaces or other joining areas.

According to the in 7 illustrated fifth embodiment is also the integration of other channels 184 , in particular a drainage channel and / or collecting channel 152 , in the housing part 103 intended.

In the 7 illustrated fifth embodiment thus corresponds in several respects in 4 illustrated second embodiment.

Incidentally, the votes in the 6 and 7 illustrated embodiments of the separation device 100 in terms of structure and function with in the 1 to 3 illustrated first embodiment, so that reference is made to the above description in this respect.

One in the 8th to 16 illustrated sixth embodiment of a separation device 100 differs from the embodiments described above essentially in that the axis of rotation 118 of the rotary separator 148 in the installed state of the separator 100 is aligned horizontally. In particular, the axis of rotation 118 oriented substantially horizontally.

As a result, as well as by one or more of the features described below, preferably a particularly space-saving construction of the separation device 100 be enabled.

As in particular the two exploded views in the 9 and 10 can be seen, the sixth embodiment of the separator differs 100 also especially in the construction of the housing 102 from the embodiments described above.

The housing 102 includes a middle housing part 103m which is the separation room 104 surrounds substantially hollow cylindrical or cylindrical shell-shaped, and a plurality of cover elements 164 for closing in the middle housing part 103m trained openings.

In particular, two in the axial direction, the middle housing part 103m closing lid elements 164a and a plurality of radially in the hollow cylindrical housing wall 130 supplementary or additionally covering lateral cover elements 164s intended.

One of the axial cover elements 164a For example, is a cover plate, which with, for example, two connecting pieces 122 is provided. These connecting pieces 122 are in particular part of the feeder 120 or the discharge device 124 ,

By means of this axial cover element 164a are preferably a plurality of chambers which extend in the axial direction of the separation chamber 104 connect, covered and / or separated.

These chambers are in particular part of a pre-separator 178 and / or a Nachabscheiders 176 , In particular, this is an atrium 186 which is part of the pre-separator 178 is, and an outlet space 136 , which is part of the Nachabscheiders 176 can be provided.

The antechamber 186 can also be sent to a pre-separation room 188 of the pre-separator 178 border or include this.

In particular, between the antechamber 186 and the pre-separation room 188 provided a flow deflection. Further (not shown) additional separation elements in the antechamber 186 and / or the pre-separation room 188 be provided.

The other axial cover element 164a which is the axial cover element described above 164a is arranged opposite, preferably comprises a stator 189 for receiving the stator 168 of the electric motor 144 the drive device 140 ,

Furthermore, this comprises axial cover element 164a preferably several attachment points 190 for securing one or more bearing elements 174 the storage device 172 ,

The stator holder 189 in particular by means of an end plate 192 covered, in particular on a rotary separator 148 opposite side of the stator 189 comprehensive axial cover element 164a ,

The end plate 192 preferably further comprises one or more, for example two, plug connections 182 over which the electric motor 144 can be controlled and / or supplied with electricity.

The end plate 192 is preferably itself an axial cover element 164a ,

The side cover elements 164s serve in particular the supplement of the housing 102 around one or more flow guides 194 ,

In particular, by means of the one or more lateral cover elements 164s Channels for connecting different areas and interiors of the housing 102 be provided with each other.

A side cover element 164s can, for example, as a return 196 serve, by means of which, for example, one by means of the rotary separator 148 purified gas stream after flowing through the rotary separator 148 essentially parallel to the axis of rotation 118 on the rotary separator 148 is passable. In particular, this can be the discharge device 124 on the same side of the rotary separator 148 be arranged as the feeder 120 , wherein preferably at the same time it is ensured that the stack 108 from flow elements 110 is substantially flowed through radially from one axial end lying radially inwardly to another axial end lying radially outward.

Another side cover element 164s is for example part of a Nachabscheiders 176 and connects, for example, the return 196 with the outlet space 136 , Here are, for example, one or more flow deflections 138 provided in order to be able to separate in particular undesirably discharged and entrained with the already purified gas stream oil droplets from the clean gas, before this via the discharge device 124 is dissipated.

In addition, in the separation device 100 be provided that, for example by means of a lateral cover element 164s one or more drainage rooms, in particular a main drainage room 198 and / or a secondary drainage room 200 , covered and / or completed.

This particular lateral cover element 164s forms in particular a drainage cover 202 , which preferably also on the central housing part 103m fixed or definable.

In the assembled state of the separator 100 , especially in a vehicle, is the drainage cover 202 preferably in a region of the housing wall lying below with respect to the direction of gravity 130 arranged.

In the separation room 104 resulting separated oil can thereby easily from the separation chamber 104 in the main drainage room 198 reach.

The one or more secondary drainage rooms 200 preferably in the direction of gravity down the Vorabscheideraum 188 and / or the outlet space 136 and allow in this area the oil removal.

The drainage cover 202 can have one or more connecting pieces 122 have, over which the separated oil is discharged.

In addition, it can be provided that one or more valve elements 204 at the drainage cover 202 arranged and / or integrated in the same.

The one or more valve elements 204 are designed in particular as Umbrellaventile and / or check valves and serve to unwanted backflow of gas and / or oil in the pre-separation 188 and / or the outlet space 136 to prevent.

The fact that when in the 8th to 16 illustrated sixth embodiment of the separation device 100 several cover elements 164 to complete and / or complete the separation room 104 surrounding housing part 103 are provided, preferably, an optimized flow guidance within the housing 102 be possible, at the same time preferably a space-saving design of the separation device 100 is possible.

The cover elements 164 For example, can form fit and / or material fit and / or non-positive with the middle housing part 103m and / or interconnected.

In particular, plastic welded joints and / or screw connections can be provided.

In further (not shown) embodiments of separation devices 100 Any features of the embodiments described above may be combined with each other.

For example, could also in the in the 8th to 16 illustrated sixth embodiment of the in a housing part 103 integrated stator 168 according to the in 4 or 7 illustrated second or fifth embodiment may be provided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012104598 A1 [0002]
• DE 19914166 A1 [0002]
• DE 69906019 T2 [0002]
• DE 10350562 A1 [0002]
• EP 1532352 A1 [0002]
• US 6755896 A [0002]
• DE 102013207058 A1 [0002]

Claims (15)

A separation apparatus (100) for separating contaminants from a raw gas stream, comprising: - A housing (102) which surrounds an at least approximately cylindrical Abscheideraum (104) of the separation device (100); - A rotary separator (148) for separating impurities, in particular liquid droplets, from the raw gas stream, wherein the rotary separator (148) about a rotation axis (118) rotatably disposed in the separation chamber (104); - a supply device (120) for supplying a raw gas stream to the rotary separator (148); - A discharge device (124) for discharging a clean gas flow from the separation chamber (104); - A drive device (140) for driving the Rotationsabscheiders (148), wherein the drive device (140) at least partially in a housing part (103) of the housing (102) of the separation device (100) is integrated. Separator (100) after Claim 1 , characterized in that at least a part of the drive device (100) is fixed in a form-fitting manner in the housing part (103). Separating device (100) according to one of Claims 1 or 2 , characterized in that at least a part of the drive device (140) in the manufacture of the housing part (103) embedded in the same, in particular cast and / or overmolded, is. Separating device (100) according to one of Claims 1 to 3 , characterized in that the drive device (100) comprises an electric motor (144), wherein a stator (168) of the electric motor (144) in the housing part (103) of the housing (102) integrated, in particular cast and / or overmolded is. Separating device (100) according to one of Claims 1 to 4 , characterized in that the housing part (103) comprises one or more fastening points (190) for fastening one or more bearing elements (174) of a bearing device (172) for mounting the rotary separator (148). Separator (100) after Claim 5 , characterized in that the one or more attachment points (190) formed in the housing part (103) and / or by forming the housing part (103) are formed. Separating device (100) according to one of Claims 1 to 6 , characterized in that the housing part (103) has one or more integrated lines and / or one or more integrated channels (184), in particular for signal transmission, for transmitting electrical energy and / or for guiding fluids, in particular the raw gas stream and / or the clean gas flow. Separating device (100) according to one of Claims 1 to 7 , characterized in that the housing part (103) comprises one or more plug connections (182) for one or more signal plugs and / or power plugs. Separator (100) after Claim 8 , characterized in that the one or more male terminals (182) integrated into the housing part (103), in particular in the manufacture of the housing part (103) defined therein, are. Separating device (100) according to one of Claims 8 or 9 characterized in that the housing part (100) comprises one or more conduits and / or channels (184) connecting the one or more male terminals (182) to the drive device (140) at least partially integrated in the housing part (103), wherein the one or more conduits and / or the one or more channels (184) are fully integrated with the housing member (103) and inaccessible from outside the housing member (103). Separating device (100) according to one of Claims 1 to 10 , characterized in that the housing part (103) is cup-shaped or plate-shaped and / or delimits the separation chamber (104) in an axial direction relative to the axis of rotation (118). Separating device (100) according to one of Claims 1 to 11 , characterized in that the housing part (103) comprises a drainage device and / or a collection channel (152) for deposited impurities. Separating device (100) according to one of Claims 1 to 12 , characterized in that a rotor (170) of an electric motor (144) of the drive device (140) protrudes into the housing part (103). Separating device (100) according to one of Claims 1 to 13 , characterized in that the housing part (103) at least a part of the drive device (140), in particular the stator (168), one or more lines, one or more channels (184), one or more connector terminals (182) and / or a or a plurality of attachment points (190), which are due to the integration in the housing part (103), in particular due to the Umgießens and / or extrusion coating, sealed to the outside to an environment of the separation device (100). Vehicle, in particular motor vehicle, comprising one or more separation devices (100) according to one of Claims 1 to 14 , characterized in that the drive device (140), in particular an electric motor (144), is arranged at a lower end of a shaft of the rotary separator (148) in a use state of the separation device (100).

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