WO2009000485A1 - Device for removing particles from a gas-like medium - Google Patents

Device for removing particles from a gas-like medium Download PDF

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Publication number
WO2009000485A1
WO2009000485A1 PCT/EP2008/005036 EP2008005036W WO2009000485A1 WO 2009000485 A1 WO2009000485 A1 WO 2009000485A1 EP 2008005036 W EP2008005036 W EP 2008005036W WO 2009000485 A1 WO2009000485 A1 WO 2009000485A1
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WIPO (PCT)
Prior art keywords
channel
particles
corona charging
extensions
electrode
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Application number
PCT/EP2008/005036
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German (de)
French (fr)
Inventor
Hans-Joachim Vom Stein
Original Assignee
Ab Skf
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Publication date
Application filed by Ab Skf filed Critical Ab Skf
Priority to EP08773578A priority Critical patent/EP2160250A1/en
Publication of WO2009000485A1 publication Critical patent/WO2009000485A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode with two or more serrated ends or sides

Definitions

  • the invention relates to a device for removing particles from a flowing gaseous medium containing the particles.
  • DE 10 2004 010 583 A1 discloses an oil separator for separating oil from a flowing medium with a labyrinth-type flow guide formed essentially by baffles. At least one of the baffles is deformable rubber-like at least in a partial region. Furthermore, said oil separator is formed as an integral part of a cylinder head cover of an internal combustion engine.
  • a device for removing particles from a flowing gaseous medium containing the particles comprises the following features:
  • a channel for guiding the medium, - in a first region of the channel boundary is a to a pole of a
  • High-voltage DC source connectable corona charging electrode arranged, and in a second region of the channel boundary opposite the first region, a counter electrode is arranged.
  • the invention is based on the finding that the device described above according to claim 1 in an unexpected manner, a nearly 100% removal of the particles while only consuming an electrical power of about 10 watts allows.
  • the removal of the particles takes place without appreciable pressure losses of the flowing gaseous medium, which is particularly advantageous when used for oil separation from biofwaste gases of an internal combustion engine.
  • the like can not be achieved with hitherto known, purpose-built devices comprising cyclones, gravimetric separators, filters, other electrostatic solutions, etc.
  • the high degree of removal is essentially achieved in that said corona charging electrode is used, wherein in the electric field from the counterelectrode to the corona charging electrode in the sense of a hard corona charging a plasma channel is formed, with which charge, namely electrons are transported from the particles to the corona charging electrode.
  • the thus-influenced particles are attracted to the counterelectrode by a short path and, where the particles are liquid particles, adhere adhesively, forming a film of liquid.
  • the counter electrode and / or at least parts of the channel are, for example, by an inclined position such that the liquid precipitating on the counterelectrode during operation of the device is conducted away from the counterelectrode into a predefinable target region.
  • the corona charging electrode comprises projections formed as tips, for example, which are arranged in such a way that they do not project directly into the flowing medium and that their paraboloid-shaped zones of influence cover as completely as possible the channel cross-section through which the flowing medium flows. There must therefore be no free space between the zones of influence of the individual extensions or tips. So that the tips do not protrude directly into the flowing medium, the corona charging electrode, comprising the tips, is arranged, for example, in a bulge of the cavity.
  • the electrode region of the device is preceded by a pre-separator, through which the flowing medium is passed, wherein the pre-separator typically comprises at least one baffle plate or a gap with drip edge.
  • the device is designed as an integral part of a crankshaft cover or a cylinder head cover of an internal combustion engine.
  • the fact that the device is formed comparatively compact and small volume, housing in the cylinder head cover is easily possible, which in turn particularly free spaces for other components, for example in the engine compartment of a motor vehicle, creates.
  • the device according to the invention is not limited to use as an oil separator for blow-by gases, but can be used for any form of gas purification.
  • the device according to the invention can also be used universally as non-contact seal and / or also be used for gas purification with clean room claims.
  • the figure shows as an embodiment of the invention in the form of a schematic diagram of a device for separating oil particles from a flowing gaseous medium 2, comprising a blow-by gas of an internal combustion engine.
  • the device comprises a pre-separator 8, through which the flowing medium 2 is first passed.
  • the pre-separator 8 is typically designed as a baffle plate or gap with drip edge.
  • the flowing medium 2 is introduced into a relative to the horizontal inclined channel 10, which has approximately a rectangular cross-section.
  • the flowing medium 2 with the oil particles not deposited by the preseparator 8 passes through an electrode region arranged within the channel 10.
  • Said electrode region in this case comprises a corona charging electrode 12, which extends perpendicular to the plane of the drawing substantially over the entire width of the channel 10.
  • the corona charging electrode 12 in this case comprises a plurality of tips 14, which are arranged in said direction perpendicular to the plane of the drawing next to or behind each other.
  • the tips 14 are furthermore arranged in such a way that their zones of influence, paraboloidal with respect to the oil particles, cover as completely as possible the channel cross-section through which the medium 2 flows.
  • the tips 14 are arranged so that they are not directly in the Projecting medium current, including the corona charging electrode 12 is arranged with their tips 14 in a bulge of the channel 10.
  • the corona charging electrode 12 is connected to a positive pole 18 of a high voltage DC source.
  • the high voltage is preferably selected in a range between about 3 to 12 kV.
  • the corona charging electrode 12 opposite a arranged for example as a metal plate counter electrode 16 is arranged, which is grounded accordingly. Similar to the corona charging electrode 12, the counterelectrode 16 extend perpendicular to the plane of the drawing substantially over the entire width of the channel 10 and may be formed in the flow direction over an extension of the corona charging electrode 12.
  • the oil particles still contained in the medium flow are thereby influenzated, so that they can be contacted at short intervals
  • the device is integrated in particular in a crankshaft cover or a cylinder head cover of a diesel internal combustion engine of a truck.

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  • Electrostatic Separation (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

A device for removing particles from a flowing gas-like medium which contains the particles comprises the following features: a) a channel for carrying the medium, b) a corona charge electrode, which can be connected to one pole of a high-voltage DC source, is arranged in a first area of the channel boundary, and c) an opposing electrode is arranged in a second area, opposite the first area, of the channel boundary.

Description

B e s c h r e i b u n g Description
VORRICHTUNG ZUM ENTFERNEN VON PARTIKELN AUS EINEM GASARTIGEN MEDIUMDEVICE FOR REMOVING PARTICLES FROM A GAS-TYPE MEDIUM
Die Erfindung betrifft eine Vorrichtung zum Entfernen von Partikeln aus einem die Partikel beinhaltenden strömenden gasartigen Medium.The invention relates to a device for removing particles from a flowing gaseous medium containing the particles.
Beispielsweise aus der DE 10 2004 010 583 Al ist ein Ölabscheider zum Abschei- den von Öl aus einem strömenden Medium mit einer im Wesentlichen durch Prallwände gebildeten, labyrinthartigen Strömungsführung bekannt. Dabei ist wenigstens eine der Prallwände wenigstens in einem Teilbereich gummiartig verformbar. Ferner ist besagter Ölabscheider als integraler Bestandteil einer Zylinderkopfhaube eines Verbrennungsmotors ausgebildet.For example, DE 10 2004 010 583 A1 discloses an oil separator for separating oil from a flowing medium with a labyrinth-type flow guide formed essentially by baffles. At least one of the baffles is deformable rubber-like at least in a partial region. Furthermore, said oil separator is formed as an integral part of a cylinder head cover of an internal combustion engine.
Eine Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zum Entfernen von Partikeln aus einem die Partikel beinhaltenden strömenden gasartigen Medium derart zu schaffen, dass bei einfacher und damit kostengünstiger Ausbildung der Vorrichtung ein hoher Entfernungsgrad erzielbar ist.It is an object of the present invention to provide a device for removing particles from a flowing gaseous medium containing the particles in such a way that a high degree of removal can be achieved with a simple and thus cost-effective design of the device.
Die Aufgabe wird durch den Gegenstand des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.The object is solved by the subject matter of claim 1. Advantageous embodiments are described in the subclaims.
BESTATIGUNGSKOPIE Gemäß Anspruch 1 umfasst eine Vorrichtung zum Entfernen von Partikeln aus einem die Partikel beinhaltenden strömenden gasartigen Medium folgende Merkmale:BESTATIGUNGSKOPIE According to claim 1, a device for removing particles from a flowing gaseous medium containing the particles comprises the following features:
Ein Kanal zum Führen des Mediums, - in einem ersten Bereich der Kanalbegrenzung ist eine an einen Pol einerA channel for guiding the medium, - in a first region of the channel boundary is a to a pole of a
Hochspannungs-DC-Quelle anschließbare Koronaaufladungselektrode angeordnet, und in einem dem ersten Bereich gegenüberliegenden zweiten Bereich der Kanalbegrenzung ist eine Gegenelektrode angeordnet.High-voltage DC source connectable corona charging electrode arranged, and in a second region of the channel boundary opposite the first region, a counter electrode is arranged.
Die Erfindung beruht dabei auf der Erkenntnis, dass die vorausgehend beschriebene Vorrichtung gemäß dem Anspruch 1 in an sich unerwarteter Weise eine nahezu 100%ige Entfernung der Partikel unter Aufwendung lediglich einer elektrischen Leistung von ca. 10 Watt ermöglicht. Mit besonderem Vorteil findet dabei die Entfernung der Partikel ohne nennenswerte Druckverluste des strömenden gasartigen Mediums statt, was insbesondere bei einer Verwendung zur Ölabscheidung aus Bio w-by- Gasen eines Verbrennungsmotors von besonderem Vorteil ist. Vergleichbares ist mit bisher bekannten, zweckgleichen Vorrichtungen, umfassend Zyklone, gravimetrische Abscheider, Filter, andere elektrostatische Lösungen usw. nicht erreichbar.The invention is based on the finding that the device described above according to claim 1 in an unexpected manner, a nearly 100% removal of the particles while only consuming an electrical power of about 10 watts allows. With particular advantage, the removal of the particles takes place without appreciable pressure losses of the flowing gaseous medium, which is particularly advantageous when used for oil separation from biofwaste gases of an internal combustion engine. The like can not be achieved with hitherto known, purpose-built devices comprising cyclones, gravimetric separators, filters, other electrostatic solutions, etc.
Dabei wird der hohe Entfernungsgrad im Wesentlichen dadurch erzielt, dass besagte Koronaaufladeelektrode Einsatz findet, wobei im elektrischen Feld von der Gegenelektrode zur Koronaaufladungselektrode im Sinne einer harten Koronaaufladung ein Plasmakanal gebildet wird, mit welchem Ladung, nämlich Elektronen von den Partikeln zu der Koronaaufladungselektrode transportiert werden. Die so influen- zierten Partikel werden von der Gegenelektrode auf kurzem Wege angezogen und schlagen sich dort, insofern es sich um Flüssigkeitspartikel handelt, adhäsiv haftend, einen Flüssigkeitsfilm ausbildend nieder. Dabei sind die Gegenelektrode und/oder wenigstens Teile des Kanals beispielsweise durch eine Schrägstellung derart ausgebildet, dass die sich auf der Gegenelektrode bei Betrieb der Vorrichtung niederschlagende Flüssigkeit von der Gegenelektrode in einen vorgebbaren Zielbereich weggeleitet wird.The high degree of removal is essentially achieved in that said corona charging electrode is used, wherein in the electric field from the counterelectrode to the corona charging electrode in the sense of a hard corona charging a plasma channel is formed, with which charge, namely electrons are transported from the particles to the corona charging electrode. The thus-influenced particles are attracted to the counterelectrode by a short path and, where the particles are liquid particles, adhere adhesively, forming a film of liquid. In this case, the counter electrode and / or at least parts of the channel are, for example, by an inclined position such that the liquid precipitating on the counterelectrode during operation of the device is conducted away from the counterelectrode into a predefinable target region.
In einer vorteilhaften Ausgestaltung umfasst die Koronaaufladungselektrode beispielsweise als Spitzen ausgebildete Fortsätze, die derart angeordnet sind, dass sie nicht direkt in das strömende Medium hineinragen und dass ihre paraboloidfor- migen Influenzierungszonen dem vom strömenden Medium durchströmten Kanalquerschnitt möglichst vollständig abdecken. Es darf also zwischen den Influenzie- rungszonen der einzelnen Fortsätzen bzw. Spitzen kein Freiraum verbleiben. Damit die Spitzen nicht direkt in das strömende Medium hineinragen, ist die Koronaaufladungselektrode, umfassend die Spitzen, beispielsweise in einer Ausbauchung der Höhlung angeordnet.In an advantageous embodiment, the corona charging electrode comprises projections formed as tips, for example, which are arranged in such a way that they do not project directly into the flowing medium and that their paraboloid-shaped zones of influence cover as completely as possible the channel cross-section through which the flowing medium flows. There must therefore be no free space between the zones of influence of the individual extensions or tips. So that the tips do not protrude directly into the flowing medium, the corona charging electrode, comprising the tips, is arranged, for example, in a bulge of the cavity.
In einer vorteilhaften Ausgestaltung ist dem Elektrodenbereich der Vorrichtung ein Vorabscheider vorgeschaltet, durch den das strömende Medium hindurchgeleitet wird, wobei der Vorabscheider typischerweise wenigstens eine Prallplatte oder einen Spalt mit Tropfkante umfasst.In an advantageous embodiment, the electrode region of the device is preceded by a pre-separator, through which the flowing medium is passed, wherein the pre-separator typically comprises at least one baffle plate or a gap with drip edge.
In einer vorteilhaften Ausgestaltung ist die Vorrichtung als integraler Bestandteil einer Kurbelwellenabdeckung bzw. einer Zylinderkopfhaube eines Verbrennungsmotors ausgebildet. Dadurch, dass die Vorrichtung vergleichsweise kompakt und kleinvolumig ausgebildet ist, ist die Unterbringung in der Zylinderkopfhaube problemlos möglich, was mit besonderem Vorteil wiederum Freiräume für andere Komponenten, beispielsweise im Motorraum eines Kraftfahrzeugs, schafft.In an advantageous embodiment, the device is designed as an integral part of a crankshaft cover or a cylinder head cover of an internal combustion engine. The fact that the device is formed comparatively compact and small volume, housing in the cylinder head cover is easily possible, which in turn particularly free spaces for other components, for example in the engine compartment of a motor vehicle, creates.
Die erfindungsgemäße Vorrichtung ist dabei nicht auf den Einsatz als Ölabscheider für Blow-by-Gase beschränkt, sondern ist für jegliche Form der Gasreinigung einsetzbar. Somit ist auch eine Verwendung der erfindungsgemäßen Vorrichtung im Rahmen von Katalysatoren, Dieselpartikelfiltern und auch Luftfiltern, beispielswei- se für Kraftfahrzeuge vorteilhaft. Schließlich kann die erfindungsgemäße Vorrichtung auch universell als berührungslose Dichtung eingesetzt werden und/oder auch zur Gasreinigung mit Rein-Raum- Ansprüchen verwendet werden.The device according to the invention is not limited to use as an oil separator for blow-by gases, but can be used for any form of gas purification. Thus, a use of the device according to the invention in the context of catalysts, diesel particulate filters and air filters, for example, se advantageous for motor vehicles. Finally, the device according to the invention can also be used universally as non-contact seal and / or also be used for gas purification with clean room claims.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus dem im Folgenden beschriebenen Ausführungsbeispiel der Erfindung anhand der Figur.Further advantages, features and details of the invention will become apparent from the embodiment of the invention described below with reference to FIG.
Die Figur zeigt dabei als ein Ausführungsbeispiel der Erfindung in Form einer Prinzipskizze eine Vorrichtung zum Abscheiden von Ölpartikeln aus einem strö- menden gasartigen Medium 2, umfassend ein Blow-by-Gas eines Verbrennungsmotors.The figure shows as an embodiment of the invention in the form of a schematic diagram of a device for separating oil particles from a flowing gaseous medium 2, comprising a blow-by gas of an internal combustion engine.
Die Vorrichtung umfasst dabei einen Vorabscheider 8, durch den das strömende Medium 2 zunächst hindurchgeführt wird. Der Vorabscheider 8 ist dabei typischer- weise als Prallplatte oder Spalt mit Tropfkante ausgeführt.The device comprises a pre-separator 8, through which the flowing medium 2 is first passed. The pre-separator 8 is typically designed as a baffle plate or gap with drip edge.
Danach ist das strömende Medium 2 in einen gegenüber der Horizontalen schräg gestellten Kanal 10 eingeleitet, der in etwa einen rechteckförmigen Querschnitt aufweist. Dabei tritt das strömende Medium 2 mit den nicht durch den Vorabschei- der 8 abgeschiedenen Ölpartikeln durch einen innerhalb des Kanals 10 angeordneten Elektrodenbereich hindurch.Thereafter, the flowing medium 2 is introduced into a relative to the horizontal inclined channel 10, which has approximately a rectangular cross-section. In this case, the flowing medium 2 with the oil particles not deposited by the preseparator 8 passes through an electrode region arranged within the channel 10.
Besagter Elektrodenbereich umfasst dabei eine Koronaaufladungselektrode 12, die sich senkrecht zur Zeichnungsebene im Wesentlichen über die vollständige Breite des Kanals 10 erstreckt. Die Koronaaufladungselektrode 12 umfasst dabei mehrere Spitzen 14, die in besagter Richtung senkrecht zur Zeichnungsebene neben- bzw. hintereinander angeordnet sind. Dabei sind die Spitzen 14 ferner derart angeordnet, dass ihre hinsichtlich der Ölpartikel paraboloidförmigen Influenzierungszonen den vom Medium 2 durchströmten Kanalquerschnitt möglichst vollständig abdecken. Weiterhin sind die Spitzen 14 derart angeordnet, dass sie nicht direkt in den Mediumstrom hineinragen, wozu die Koronaaufladungselektrode 12 mit ihren Spitzen 14 in einer Ausbauchung des Kanals 10 angeordnet ist. Die Koronaaufladungselektrode 12 ist dabei mit einem positiven Pol 18 einer Hochspannungs-DC- Quelle verbunden. Die Hochspannung ist dabei bevorzugt in einem Bereich zwi- sehen etwa 3 bis 12 kV gewählt.Said electrode region in this case comprises a corona charging electrode 12, which extends perpendicular to the plane of the drawing substantially over the entire width of the channel 10. The corona charging electrode 12 in this case comprises a plurality of tips 14, which are arranged in said direction perpendicular to the plane of the drawing next to or behind each other. In this case, the tips 14 are furthermore arranged in such a way that their zones of influence, paraboloidal with respect to the oil particles, cover as completely as possible the channel cross-section through which the medium 2 flows. Furthermore, the tips 14 are arranged so that they are not directly in the Projecting medium current, including the corona charging electrode 12 is arranged with their tips 14 in a bulge of the channel 10. The corona charging electrode 12 is connected to a positive pole 18 of a high voltage DC source. The high voltage is preferably selected in a range between about 3 to 12 kV.
Der Koronaaufladungselektrode 12 gegenüberliegend ist eine beispielsweise als eine Blechplatte ausgebildete Gegenelektrode 16 angeordnet, die entsprechend geerdet ist. Die Gegenelektrode 16 erstrecken sich dabei ähnlich wie auch die Koronaaufladungselektrode 12 senkrecht zur Zeichnungsebene im Wesentlichen über die vollständige Breite des Kanals 10 und kann in Strömungsrichtung über eine Erstreckung der Koronaaufladungselektrode 12 hinausgehend ausgebildet sein.The corona charging electrode 12 opposite a arranged for example as a metal plate counter electrode 16 is arranged, which is grounded accordingly. Similar to the corona charging electrode 12, the counterelectrode 16 extend perpendicular to the plane of the drawing substantially over the entire width of the channel 10 and may be formed in the flow direction over an extension of the corona charging electrode 12.
Durch besagte Elektrodenanordnung werden dabei die im Mediumstrom noch enthaltenen Ölpartikel influenziert, so dass sie sich auf kurzem Wege an derBy means of said electrode arrangement, the oil particles still contained in the medium flow are thereby influenzated, so that they can be contacted at short intervals
Gegenelektrode 16 niederschlagen und dort einen Ölfilm 4 ausbilden, der aufgrund der Schrägstellung des Kanals 10 in einen vorgebbaren Zielbereich abfließen kann.Precipitate counter electrode 16 and form there an oil film 4, which can flow due to the inclination of the channel 10 in a predetermined target area.
Dabei ist die Vorrichtung insbesondere in eine Kurbelwellenabdeckung bzw. eine Zylinderkopfhaube eines Dieselverbrennungsmotors eines Lastkraftwagens integriert.In this case, the device is integrated in particular in a crankshaft cover or a cylinder head cover of a diesel internal combustion engine of a truck.
In anderen Ausführungen sind natürlich auch nicht integrierte Lösungen sowie andere Einsatzgebiete auf dem Gebiet der Personenkraftwagen oder auch außerhalb der Kraftfahrzeugtechnik, auch unter Verzicht auf einen Vorabscheider, möglich. In other embodiments, of course, non-integrated solutions and other applications in the field of passenger cars or outside the automotive technology, even waiving a pre-separator, possible.

Claims

P a t e n t a n s p r ü c h eVorrichtung P atentanspr ch ch device
1. Vorrichtung zum Entfernen von Partikeln aus einem die Partikel beinhaltenden strömenden gasartigen Medium, umfassend folgende Merkmale:Device for removing particles from a flowing gaseous medium containing the particles, comprising the following features:
- Ein Kanal zum Führen des Mediums,A channel for guiding the medium,
- in einem ersten Bereich der Kanalbegrenzung ist eine an einen Pol einer Hochspannungs-DC-Quelle anschließbare Koronaaufladungselektrode angeordnet, undin a first region of the channel boundary, a corona charging electrode which can be connected to one pole of a high-voltage DC source is arranged, and
- in einem dem ersten Bereich gegenüberliegenden zweiten Bereich der Kanalbegrenzung ist eine Gegenelektrode angeordnet.- In a first region opposite the second region of the channel boundary, a counter electrode is arranged.
2. Vorrichtung nach Anspruch 1, wobei die Koronaaufladungselektrode wenigstens einen in etwa senkrecht von der Kanalbegrenzung in den Kanal hineinragenden Fortsatz umfasst.2. Device according to claim 1, wherein the corona charging electrode comprises at least one protruding approximately perpendicularly from the channel boundary in the channel extension.
3. Vorrichtung nach einem der Ansprüche 1 oder 2, wobei die Koronaaufla- dungselektrode eine Mehrzahl von Fortsätzen umfasst.3. Device according to one of claims 1 or 2, wherein the corona charging electrode comprises a plurality of extensions.
4. Vorrichtung nach Anspruch 3, wobei jedem Fortsatz eine die Partikel betreffende Influenzierungszone zugehört und die Fortsätze derart angeordnet sind, das die Infiuenzierungszonen aller Fortsätze zusammen den durchströmten Kanalquerschnitt im Wesentlichen abdecken. 4. Apparatus according to claim 3, wherein each extension belongs to a particle affected Influenzierungszone and the extensions are arranged such that the infiuence zones of all extensions together cover the flowed through channel cross section substantially.
5. Vorrichtung nach einem der Ansprüche 3 oder 4, wobei die Fortsätze der Koronaaufladungselektrode im Wesentlichen parallel zueinander ausrichtbar sind.5. Device according to one of claims 3 or 4, wherein the extensions of the corona charging electrode are aligned substantially parallel to each other.
6. Vorrichtung nach einem der Ansprüche 2 bis 5, wobei die Fortsätze derart angeordnet sind, dass sie lediglich in einen Randbereich der Strömung hineinragen.6. Device according to one of claims 2 to 5, wherein the extensions are arranged such that they protrude only in an edge region of the flow.
7. Vorrichtung nach Anspruch 6, wobei die Koronaaufladungselektrode, umfassend die Fortsätze in einer Ausbauchung des Kanals angeordnet ist.7. The device of claim 6, wherein the corona charging electrode comprising the projections is disposed in a bulge of the channel.
8. Vorrichtung nach einem der Ansprüche 2 bis 7, wobei wenigstens einer der Fortsätze als eine Spitze ausgebildet ist.8. Device according to one of claims 2 to 7, wherein at least one of the extensions is formed as a tip.
9. Vorrichtung nach einem der Ansprüche 1 bis 8, wobei die Gegenelektrode flächig ausgebildet ist.9. Device according to one of claims 1 to 8, wherein the counter electrode is formed flat.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, wobei die Gegenelektrode und/oder wenigstens Teilbereiche des Kanals derart ausgebildet und/oder angeordnet sind, dass die auf der Gegenelektrode niedergeschlagenen Partikel in einen vorgebbaren Zielbereich weggeleitet werden.10. Device according to one of claims 1 to 9, wherein the counter electrode and / or at least portions of the channel are formed and / or arranged such that the precipitated on the counter electrode particles are directed away in a predetermined target area.
11. Vorrichtung nach Anspruch 10, wobei die Gegenelektrode und/oder wenigs- tens Teilbereiche des Kanals gegenüber einer horizontalen Ebene mit einer11. Device according to claim 10, wherein the counterelectrode and / or at least partial regions of the channel with respect to a horizontal plane
Schrägstellung ausgebildet sind.Inclined position are formed.
12. Vorrichtung nach einem der Ansprüche 1 bis 11, wobei die Koronaaufladungselektrode mit dem positiven Pol der Hochspannungs-DC-Quelle verbun- den ist. 12. Device according to one of claims 1 to 11, wherein the corona charging electrode is connected to the positive pole of the high voltage DC source.
13. Vorrichtung nach einem der Ansprüche 1 bis 12, wobei die Gegenelektrode geerdet ausgebildet ist.13. Device according to one of claims 1 to 12, wherein the counter electrode is formed grounded.
14. Vorrichtung nach einem der Ansprüche 1 bis 13, wobei die Hochspannung der Hochspannungs-DC-Quelle in etwa zwischen 3 bis 12 kV liegt.14. The device of claim 1, wherein the high voltage of the high voltage DC source is approximately between 3 to 12 kV.
15. Vorrichtung nach einem der Ansprüche 1 bis 14, wobei der Kanal mit einem rechteckartigen Querschnitt ausgebildet ist.15. Device according to one of claims 1 to 14, wherein the channel is formed with a rectangular cross-section.
16. Vorrichtung nach einem der Ansprüche 1 bis 15, wobei dem Elektrodenbereich in Mediumströmungsrichtung ein Vorabscheider vorgeschaltet ist.16. Device according to one of claims 1 to 15, wherein the electrode region in the medium flow direction, a pre-separator is connected upstream.
17. Vorrichtung nach Anspruch 16, wobei der Vorabscheider wenigstens eine Prallwand und/oder einen Spalt mit Tropfkante umfasst.17. The apparatus of claim 16, wherein the pre-separator comprises at least one baffle and / or a gap with drip edge.
18. Vorrichtung nach einem der Ansprüche 1 bis 17, wobei die Partikel Partikel einer Flüssigkeit, insbesondere eines Öls sind.18. Device according to one of claims 1 to 17, wherein the particles are particles of a liquid, in particular of an oil.
19. Vorrichtung nach einem der Ansprüche 1 bis 18, wobei das gasartige Medium Luft umfasst.19. Device according to one of claims 1 to 18, wherein the gaseous medium comprises air.
20. Vorrichtung nach einem der Ansprüche 1 bis 19, wobei das strömende Medium ein Blow-by-Gas einer Verbrennungskraftmaschine umfasst.20. Device according to one of claims 1 to 19, wherein the flowing medium comprises a blow-by gas of an internal combustion engine.
21. Vorrichtung nach einem der Ansprüche 1 bis 20, wobei die Vorrichtung integraler Bestandteil einer Kurbelwellenabdeckung oder Zylinderkopfhaube eines Verbrennungsmotors, insbesondere eines Kraftfahrzeugs ist. 21. Device according to one of claims 1 to 20, wherein the device is an integral part of a crankshaft cover or cylinder head cover of an internal combustion engine, in particular of a motor vehicle.
PCT/EP2008/005036 2007-06-25 2008-06-23 Device for removing particles from a gas-like medium WO2009000485A1 (en)

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