EP2052136B1 - Dispositif de séparation des liquides à partir de gaz - Google Patents

Dispositif de séparation des liquides à partir de gaz Download PDF

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Publication number
EP2052136B1
EP2052136B1 EP07788217A EP07788217A EP2052136B1 EP 2052136 B1 EP2052136 B1 EP 2052136B1 EP 07788217 A EP07788217 A EP 07788217A EP 07788217 A EP07788217 A EP 07788217A EP 2052136 B1 EP2052136 B1 EP 2052136B1
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EP
European Patent Office
Prior art keywords
flow tubes
flow
gas
tubes
individual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP07788217A
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German (de)
English (en)
Other versions
EP2052136A1 (fr
Inventor
Hans Janssen
Jorge Soares
Tobias Burkert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polytec Automotive GmbH and Co KG
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Polytec Automotive GmbH and Co KG
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Application filed by Polytec Automotive GmbH and Co KG filed Critical Polytec Automotive GmbH and Co KG
Publication of EP2052136A1 publication Critical patent/EP2052136A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422—Separating oil and gas with a centrifuge device
    • F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone

Definitions

  • cyclone separators of various types, for example, are known as single or multi-cyclones.
  • the accumulated in the crankcase, loaded with oil droplets gas is introduced tangentially into the cyclone. Due to the centrifugal forces acting in the cyclone, the oil contained in the gas stream is deposited on the inner wall of the cyclone and fed via a arranged in the lower part of the cyclone outlet the crankcase or oil sump of the engine.
  • the gas flow is deflected in the cyclone, flows through a arranged at the top of the cyclone dip tube as clean gas and enters the intake tract of the engine.
  • a single cyclone separator has only a limited working range, which leads to insufficient separation in the case of excessively low volume flows and to high pressure loss in the case of excessively high volume flows.
  • the working area of multicyclones connected in parallel can also be extended by connecting and shutting off individual cyclones by means of a valve.
  • Such multicyclones are designed, for example, as an independent assembly and require a relatively large amount of space, since a spatial separation of the components raw gas, separated oil and clean gas is required.
  • oil separators are integrated in the cylinder head cover of the internal combustion engine, such as in the DE 10 2004 019 154 A1 disclosed.
  • Rotary tube separators which are predominantly flowed axially, are also known.
  • the rotational movement is generated by vanes, which are arranged at the gas inlet.
  • a plurality of base support can be arranged with a plurality of separation elements, wherein the direction of rotation in a flow path can run the same or in opposite directions.
  • the separation device can be arranged in a cavity of the cylinder head cover behind a labyrinth-like coarse separator.
  • the invention has for its object to provide a device for the separation of liquids from gases, in particular for the separation of oil particles from blow-by gases of the crankcase ventilation of internal combustion engines, which is characterized by a simple, inexpensive and space-saving design and with the a good separation efficiency can be achieved.
  • the flow tubes arranged in the plate-shaped basic carrier have at least one tangentially arranged gas inlet opening at their end pointing in the gas inlet direction. At the adjacent to this end face the flow tubes are closed. Since each flow tube forms a separating element or a tube separator, there is a parallel connection. Since the gas stream dividing onto the individual flow tubes is introduced into the latter only tangentially, a flow pattern is produced which leads to an improvement in the separation efficiency in comparison with the known, axially flowed tube separators.
  • the tangential flow creates a combined rotational and axial flow with a swirl component in the flow tubes, with the rotational flow in the flow tubes rotating several times through 360 °.
  • the number of rotations is depending on the dimension of the gas inlet opening, the velocity of the gas flow and the length of the flow tubes or tubes, wherein several revolutions of the gas flow (5 to 10 times) can be achieved.
  • a flow is formed which corresponds in cross-section to the inlet cross-section and continues helically along the tube wall until it leaves the tube.
  • the kinetic energy generated by the flow velocity of the gas and the tangential introduction can be utilized to a greater extent for the separation of the particles dispersed in the gas stream.
  • the flow path is not affected by any additional forced flow, such as when using helical segments.
  • the gas flow reaches higher rotational frequencies and larger centrifugal forces arise. This leads to a significantly improved separation efficiency.
  • the deposited on the inner wall of the flow tubes liquid particles are entrained in the flow direction and drop due to gravity at the gas outlet opening of the flow tubes, collect at the bottom of the installation space and are discharged from this via a discharge opening.
  • the device can be designed as a very small effective unit that requires only a small installation space.
  • different combination options that allow adaptation to different operating conditions.
  • the tangential gas inlet openings of the passage tubes may be slit-shaped or slit-shaped.
  • the individual flow tubes may also have a plurality of gas inlet openings, which are preferably arranged radially offset from one another.
  • the gas inlet openings may also have different sized cross-sectional areas.
  • the flow tubes should be flush with each other at the gas inlet side.
  • the frontal openings on the gas inlet side can be closed by means of a cover plate.
  • the individual flow tubes can already be made in the production so that they have no frontal opening on the gas inlet side.
  • valves can be in themselves known simple and inexpensive spring valves are used.
  • the spring valves each have a sealing surface, which close at least one or more flow tubes on the gas outlet side. The spring valves close the gas outlet side under the action of a bias.
  • the bias voltage can be used to set the differential pressure at which the valve opens.
  • the use of several spring valves with different bias voltages also allows a staggered connection of further tube separators, whereby the control of the separator can be adapted even more precisely to the respective operating conditions.
  • the plate-shaped base support can be equipped with flow tubes, except for a peripheral edge section.
  • the acting in the basic principle as a parallel circuit separator can also be extended as a combined series circuit by a plurality of plate-shaped base support with flow tubes spaced from each other are arranged.
  • the distance between the individual base supports must be at least so large that the drops emerging from the flow tubes can fall in the direction of gravity and are not entrained by the gas flow into the gas inlet openings of the flow tubes of the following base support.
  • the distance between the base supports is 10 to 20 mm.
  • a base support which is to be used for the deposition of larger particles or drops (coarse separator) is advantageously equipped with flow tubes, which have an enlarged tangential inlet cross-section and a larger inner diameter.
  • Coarse separators have a higher absorption capacity for larger particles, but do not divorce the smaller particles due to the lower centrifugal forces. These are then deposited in the downstream basic carrier for fine separation, whose flow tubes have smaller diameters and smaller inlet cross-sections. Pre-separation can prevent overcharging of the fine separator.
  • each base support or separator is assigned a separate liquid flow.
  • the flow tubes can be designed inclined in the direction of the liquid collecting point. As a result, a better drainage of the separated liquid particles is achieved.
  • the plate-shaped base support in the installation space can also be arranged in an inclined position. As a result, the flow tubes assume an obliquely downward position, so that the liquid deposited in the flow tubes can drain well in the direction of the liquid collection point.
  • a single or a plurality of plate-shaped base support are arranged in a housing or installation space.
  • the housing or the installation space have a raw gas inlet, a clean gas outlet and a liquid outlet and thus forms a separation unit.
  • a space provided in the cylinder head cover space is used as an installation space in a separation of oil from blow-by gases of internal combustion engines.
  • Cylinder head covers are preferably as Plastic injection molded part executed.
  • the proposed separation device is particularly well suited for this purpose, both as a fine separator or as a combined coarse and fine separator due to their space-saving design and their low weight.
  • the plate-shaped base support with the flow tubes are also made of plastic and can injection molding in a molding process in combination with a component of the cylinder head cover are designed as a one-piece, integral component.
  • connection for supplying the blow-by gas, the clean gas outlet and the oil outlet are in this case also an integral part of the cylinder head cover.
  • a plurality of separation units can also form a functional unit, wherein the individual separation units are connected in parallel.
  • Under a separation unit is a housing or installation space with gas inlet, at least one base support with flow tubes, clean gas outlet and liquid outlet to understand.
  • the respective gas inlets of the individual separation units can be connected separately via corresponding valves, which are integrated into the distribution lines for the supplied gas volume flow.
  • FIG. 2 is shown as a section of a group with six flow tubes 2.
  • the individual flow tubes 2 have a tangential raw gas inlet opening 3 and a gas outlet opening 4, via which clean gas and separated liquid emerge.
  • the gas outlet openings 4 are nearly in one plane with the base support 1.
  • the individual flow tubes 2 of equal length are closed at their end pointing in the gas inlet direction, on the front side 2a, by means of a cover plate 5, which is placed in the example shown.
  • the cover plate 5 can also be injection-molded in groups and in each case cover the flow tubes 2 of a group.
  • the tangential gas inlet opening 3 for example as a gap or slot, is arranged in each case.
  • a combined rotational and axial flow is generated with a swirl component, wherein the rotational flow rotates several times through 360 °.
  • tangential gas inlet opening 3 it is also possible to provide a plurality of tangential gas inlet openings which are arranged radially offset from one another.
  • the tangential gas inlet openings 3 of the individual flow tubes 2 are identical and have equal inlet cross-sectional areas.
  • the inlet cross-sectional areas can also be formed differently large.
  • the base support 1 has six groups, each with six flow tubes 2.
  • the gas outlet openings 4 of the flow tubes 2 'of four adjacent groups can be closed by means of a spring valve 6.
  • the spring valves 6 designed in the form of a spiral spring are fixed to the base carrier with a fastening part 1b and have a sealing surface which closes the gas outlet openings 4 of the flow tubes 2 '.
  • the differential pressure at which the valve opens be set.
  • the individual flow tubes which have the function of a separating element, can thus be better adapted to the respective operating conditions.
  • FIG. 5 a variant embodiment is shown in which the base support 1 is integrated with the flow tubes 2 in the installation space of a cylinder head cover 7. Of the cylinder head cover, only the part can be seen that forms the immediate installation space, which is limited by the wall sections 8.
  • Fig. 5 is the narrow side of the installation space to see in the Base support 1 is inserted in a horizontal mounting position and welded to the downwardly projecting ends of the wall sections 8 with them.
  • the base support 1 has three rows a, b, c, each with 10 adjacent flow tubes 2, wherein in Fig. 5 only the front flow tubes 2 can be seen.
  • the individual flow tubes 2 are analogous to the in Fig. 1 and 2 formed embodiment shown.
  • the cover plate 5 on the gas inlet side of the flow tubes 2 is molded as an integral part of this.
  • the base support 1 has on its lower side a circumferential portion 1 c, which communicates with the adjacent space for the discharge of the clean gas and for receiving the drained oil in connection FIG. 5 is indicated by a downward arrow.
  • a raw gas space 9 is formed above the flow tubes 2.
  • the flow direction of the raw gas is indicated by an arrow.
  • the stream of gas stream flowing laterally into the cylinder head cover 7 is divided equally between the 30 vertically arranged flow tubes 2 and is introduced tangentially into the gas inlet openings 3.
  • a helical, running flow is formed which rotates several times through 360 °, the oil contained in the raw gas being deposited on the inner wall of the flow tubes 2 and entrained in the vertical flow direction due to the high centrifugal forces acting on it.
  • the clean gas also flows down, in the vertical direction, down as indicated by the in Fig. 5 indicated arrow indicated.
  • Fig. 6 the arrangement of a base support 1 is shown in a housing 10, wherein the base support 1 is inserted in a vertical mounting position in groove-shaped receptacles 12 of the housing 10.
  • the individual flow tubes 2 of the base support 1 are arranged horizontally. Due to the arrangement of the base support 1, the housing 10 is subdivided into a raw gas space 11 and a clean gas space 13.
  • the housing 10 is subdivided into a raw gas space 11 and a clean gas space 13.
  • the clean gas outlet 16 is located at the upper part of the housing 10.
  • the flow directions for raw gas and clean gas as well as the flow direction of the separated liquid are indicated by arrows.
  • the base support 1 has 3 rows a, b, c, each with 10 congruent arranged flow tubes 2.
  • the bottom flowing through the opening 14 raw gas is divided in the raw gas chamber 11 evenly on the 30, horizontally arranged flow tubes 2 and is tangential through the gas inlet openings 3 initiated in this.
  • the operation of the liquid separation is analogous to the embodiment described above.
  • the deposited on the inner wall of the flow tubes 2 liquid is entrained in the horizontal flow direction and drips down the gas outlet 4 of the flow tubes 2 down.
  • the purified gas stream flows via the clean gas outlet 16.
  • the accumulating at the bottom part 10 a liquid is discharged through the outlet 15.
  • housing 10 with the base support 1 forms an independent separation unit. In special applications, it may also be appropriate to arrange several of these separation units as rows or parallel.
  • a base support 1 a plurality of base supports can also be arranged in a housing or installation space, which are preferably designed differently in their deposition behavior.
  • FIG. 7 two spaced basic beams 1 and 1 'are shown, wherein the basic support 1' for the coarse separation and the base support 1 is intended for the fine separation.
  • the flow tubes 2 of the coarse separator 1 ' have a larger inner diameter than the flow tubes 2 of the downstream fine separator 1.
  • a further liquid outlet 17 is provided between the two base supports.
  • the structure of the housing 8 is otherwise analogous to that in Fig.
  • Such an arrangement represents a combination of a parallel and series connection, wherein the flow tubes of a base carrier are connected in parallel and a plurality of base carriers are connected in series.
  • This very simple and space-saving construction of such a separation unit can be used in particular for combined coarse and fine separation.

Claims (14)

  1. Dispositif pour séparer des liquides de gaz, notamment pour séparer des particules d'huile de fuites de gaz dans la ventilation du carter de moteurs à combustion interne, consistant en au moins un support de base de type plaque, dans lequel plusieurs tubes d'écoulement dotés d'une admission de gaz et d'une évacuation de gaz sont situés, le liquide se séparant sur la paroi intérieure des tubes d'écoulement, caractérisé en ce que les tubes d'écoulement individuels (2, 2') possèdent au moins une admission de gaz (3) disposée tangentiellement à l'extrémité tournée dans le sens d'admission de gaz et sont fermés sur la face (2a) adjacent à elle, dans lequel un courant de rotation et un courant axial combinés comprenant une composante de torsion se forment dans les tubes d'écoulement (2, 2'), et le courant de rotation tourne de 360° plusieurs fois dans les tubes individuels.
  2. Dispositif selon la revendication 1, caractérisé en ce que lesdites admissions de gaz (3) sont en forme de fentes ou de fissures.
  3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les tubes d'écoulement individuels (2, 2') possèdent plusieurs admissions de gaz (3) qui sont décalées radialement.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les admissions de gaz (3) ont des surfaces de section différentes.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les tubes d'écoulement individuels (2, 2') possèdent un diamètre intérieur de 2 à 20 mm.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la longueur (L) des tubes d'écoulement (2, 2') est au moins deux fois le diamètre intérieur (D).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les tubes d'écoulement (2, 2') arrangés dans un support de base (1, 1') se terminent mutuellement à fleur à leur côté d'admission de gaz, les apertures de face (2a) étant fermées au moyen d'une plaque de couverture (5).
  8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que certains tubes d'écoulement (2') sont munis d'une soupape (6) à leur côté d'évacuation de gaz (4), la soupape s'ouvrant en fonction de la pression.
  9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les tubes d'écoulement individuels (2, 2') one des diamètres et des longueurs différents.
  10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que plusieurs supports de base de type plaque (1, 1') avec des tubes d'écoulement (2, 2') sont arrangés à distance l'un de l'autre en tant que connexion en série.
  11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que, lorsque les supports de base de type plaque (1, 1') sont arrangés dans une position de montage verticale, les tubes d'écoulement (2, 2') sont arrangés dans une disposition inclinée dans la direction vers la site de collection de liquide.
  12. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'un seul ou plusieurs supports de base de type plaque (1, 1') sont arrangés dans un carter (10) ou espace de montage (8) qui possède une admission de gaz brut (9, 14), une évacuation de gaz purifié (16) et une sortie de liquide (15) et forme une unité de séparation indépendante.
  13. Dispositif selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les supports de base de type plaque (1, 1') sont fixés dans leur position de montage dans le carter (10) ou espace de montage (8) par glissage dans des rainures correspondantes (12), soudage, vissage, collage ou clipsage.
  14. Dispositif selon l'une quelconque des revendications 1 à 13, caractérisé en ce que plusieurs unités de séparation (8, 10) raccordées en parallèle sont prévues, dans lequel les admissions de gaz (9, 14) des unités de séparation individuelles (8, 10) peuvent être commutées séparément en fonction du débit de gaz existant.
EP07788217A 2006-08-18 2007-08-03 Dispositif de séparation des liquides à partir de gaz Revoked EP2052136B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038700.7A DE102006038700B4 (de) 2006-08-18 2006-08-18 Vorrichtung zur Abscheidung von Flüssigkeiten aus Gasen
PCT/EP2007/058085 WO2008019960A1 (fr) 2006-08-18 2007-08-03 Dispositif de séparation des liquides à partir de gaz

Publications (2)

Publication Number Publication Date
EP2052136A1 EP2052136A1 (fr) 2009-04-29
EP2052136B1 true EP2052136B1 (fr) 2011-05-04

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ID=38669647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07788217A Revoked EP2052136B1 (fr) 2006-08-18 2007-08-03 Dispositif de séparation des liquides à partir de gaz

Country Status (7)

Country Link
US (1) US8267071B2 (fr)
EP (1) EP2052136B1 (fr)
CN (1) CN101506479B (fr)
AT (1) ATE508261T1 (fr)
DE (2) DE102006038700B4 (fr)
WO (1) WO2008019960A1 (fr)
ZA (1) ZA200810417B (fr)

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DE102005038257B4 (de) 2005-08-12 2010-04-08 Reinz-Dichtungs-Gmbh Ölabscheider
DE102007058059B4 (de) * 2007-01-26 2015-06-11 Dichtungstechnik G. Bruss Gmbh & Co. Kg Ölabscheideranordnung sowie Zylinderkopfhaube für einen Verbrennungsmotor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015223478A1 (de) 2015-11-26 2017-06-01 Polytec Plastics Germany Gmbh & Co. Kg Ölabscheideeinrichtung
DE102015223478B4 (de) * 2015-11-26 2017-12-28 Polytec Plastics Germany Gmbh & Co. Kg Ölabscheideeinrichtung
DE202017101622U1 (de) 2017-03-20 2017-03-27 Polytec Plastics Germany Gmbh & Co. Kg Ölabscheidevorrichtung
WO2018171906A1 (fr) 2017-03-20 2018-09-27 Polytec Plastics Germany Gmbh & Co. Kg Dispositif de séparation d'huile

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DE102006038700B4 (de) 2021-11-11
DE102006038700A1 (de) 2008-02-21
ZA200810417B (en) 2009-08-26
CN101506479A (zh) 2009-08-12
EP2052136A1 (fr) 2009-04-29
DE502007007140D1 (de) 2011-06-16
ATE508261T1 (de) 2011-05-15
WO2008019960A1 (fr) 2008-02-21
US20090241919A1 (en) 2009-10-01
US8267071B2 (en) 2012-09-18
CN101506479B (zh) 2012-05-02

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