WO2017153136A1 - Dispositif de séparation d'un brouillard de liquide - Google Patents

Dispositif de séparation d'un brouillard de liquide Download PDF

Info

Publication number
WO2017153136A1
WO2017153136A1 PCT/EP2017/053404 EP2017053404W WO2017153136A1 WO 2017153136 A1 WO2017153136 A1 WO 2017153136A1 EP 2017053404 W EP2017053404 W EP 2017053404W WO 2017153136 A1 WO2017153136 A1 WO 2017153136A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
flüssigkeitsnebelabscheideeinrichtung
nozzle plate
elastic element
plate
Prior art date
Application number
PCT/EP2017/053404
Other languages
German (de)
English (en)
Inventor
Armando COELHO
Alfred ELSÄSSER
Volker Kirschner
Thomas Riemay
Stefan Ruppel
Original Assignee
Mahle International Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mahle International Gmbh filed Critical Mahle International Gmbh
Publication of WO2017153136A1 publication Critical patent/WO2017153136A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • 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
    • 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
    • F01M2013/0038—Layout of crankcase breathing systems
    • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
    • F01M2013/0055—Layout of crankcase breathing systems having one or more deoilers with a by-pass
    • 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
    • F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen

Definitions

  • the invention relates to a remplisstiksnebelabborge occasion for
  • baffle plate which deflects the gas flow and on which precipitate liquid droplets, in particular according to the preamble of claim 1.
  • Flow rate of the gas flow through the nozzles should be as high as possible. Therefore, the flow area of the nozzles should not be too large. However, a small flow cross-section causes a high backflow and thus high pressure loss. Here, a compromise of the cross-sectional area makes sense, in which the pressure losses are not too high, but the deposition is sufficient for the system. However, this compromise can always only be optimal for one volume flow.
  • variable nozzles which have a variable nozzle cross-section, so that at higher flow rates, the total nozzle area can increase and thereby reduce the pressure loss caused.
  • the impactor has a spring-loaded poppet valve, which forms an annular gap when opening and thus forms a variable nozzle.
  • the present invention has for its object to provide an improved or at least other embodiment of a remplissottisnebelabborge worn, in particular by an improved
  • the invention is based on the general idea to form a variable nozzle with variable nozzle cross-section at one edge of the nozzle plate.
  • the at least one nozzle of the nozzle plate and the variable nozzle is directed in the same direction, so that the gas flow undergoes fewer deflections, whereby the pressure loss is reduced.
  • the posstechniksnebelabborge has at least one variable nozzle with a variable nozzle cross section, the radial is formed between an edge of the nozzle plate and an elastic member.
  • the variable nozzle can be easily formed on the edge of the nozzle plate, so that the at least one nozzle and the variable nozzle are aligned in the same direction.
  • the invention provides that with increasing flow rates of the gas stream through the
  • Deposition can be achieved.
  • a nozzle is understood to mean a through-opening, which reduces the size of the nozzle
  • the passage opening itself can have a constant nozzle cross section.
  • simple holes in a plate are to be understood as a nozzle.
  • the cross-sections of the nozzles are not limited to circles, as in drilling.
  • slit-shaped, annular or arcuate nozzle cross sections are also possible.
  • a favorable possibility provides that the elastic element in a state of rest, in which the gas flow is not through the remplisstechniksnebelabscheide annoying flows against the edge of the nozzle plate.
  • the variable nozzle is closed at least in the idle state.
  • Nozzle plate is applied.
  • the threshold flow rate is preferably chosen such that the entire nozzle cross-section of the liquid mist separator is small enough to achieve a sufficient acceleration of the gas flow. At low flow rates, only a small pressure difference builds up, so that it is favorable if below the Schwelldruck dielrate the variable nozzle remains closed, so that at the low flow rates, a sufficient pressure difference for the deposition can be achieved.
  • the elastic element has a modulus of elasticity that is low enough that the elastic element exceeds when the
  • Threshold rate through the remplissottisnebelabscheide offers lifts off the edge of the nozzle plate.
  • a particularly favorable possibility provides that the elastic element surrounds the nozzle plate, in particular completely encloses. As a result, almost the entire edge of the nozzle plate can be used to form the variable nozzle. Thus, a large variable proportion of the total
  • the elastic element is a hose.
  • the gas stream may be directed to the nozzle plate, which is preferably inserted into the tube at one end of the tube.
  • the Hose can enclose the nozzle plate in this way and pinch in itself.
  • a further advantageous solution provides that the elastic element is held on an inlet nozzle. Thereby, the gas flow, which is introduced through the inlet port into the remplisstechniksnebelabscheide founded be passed directly through the elastic member to the nozzle plate.
  • a particularly advantageous solution provides that the elastic element is held on an outer edge of the inlet nozzle. In this way, the elastic element can be easily slipped over the inlet port and thus holds itself firmly to the inlet port.
  • a favorable variant provides that at the edge of the nozzle plate a plurality of outwardly directed bulges are formed, through which the nozzle plate is braced in the elastic element. Due to the bulges can be achieved that the elastic element does not dissolve over the entire circumference of the nozzle plate. As a result, the nozzle plate can be held in operation by the elastic element. The variable nozzles are then formed between the respective lobes on the edge of the nozzle plate when the elastic element at least partially lifts off from the edge of the nozzle plate.
  • Another favorable variant provides that the variable nozzle is formed as an annular slot. A circular nozzle plate which is clamped in a tube as an elastic member, together with the elastic member generates an annular slit when the elastic member is lifted from the edge of the nozzle plate. In such a case, it is favorable if the
  • Nozzle plate is held in addition.
  • variable nozzle is formed as a slot portion-shaped slot.
  • arcuate slot can form, for example, between two protrusions which are formed on the edge of the nozzle plate.
  • At least two, for example, four such variable nozzles are formed with arc-section cross-section.
  • Elastomers have a low elastic modulus and at the same time a high elongation at break. As a result, elastomers are well suited to form the elastic element.
  • a favorable solution provides that the nozzle plate is connected to the inlet port. In this way, support elements can be avoided, which are downstream of the nozzle and thereby could hinder the liquid separation from the gas stream.
  • the nozzle plate and the elastic element are integrally formed with each other.
  • the nozzle plate and the elastic element can be produced in one work step, for example by
  • Another favorable solution provides that the at least one variable nozzle and the at least one nozzle of the nozzle plate into a common
  • the flow of the nozzles can be such that the gas flow in front of the nozzles does not have to be deflected, so that the pressure loss caused can be reduced. Furthermore, can be covered in this way with a single flapper all nozzles and variable nozzles.
  • a particularly favorable solution provides that the at least one variable nozzle and the at least one nozzle of the nozzle plate are axially directed. This allows a particularly compact design of the
  • An advantageous variant provides that with respect to each nozzle of the nozzle plate and each variable nozzle, a baffle plate is arranged, which deflects the emerging from the respective nozzle gas flow and at which Beat down liquid drop. It is understood that also one
  • Flap plate to be freed from liquid.
  • a further advantageous variant provides that the at least one variable nozzle is arranged fluidically parallel to the at least one nozzle of the nozzle plate. In this way, the variable nozzle the
  • variable nozzle with variable nozzle cross-section which is formed radially between an elastic member and an inner wall of an inlet nozzle and that with increasing flow rates of the gas flow through the
  • the invention is based on the general idea by a spring-loaded pivotable flap which bears against an edge of the nozzle plate to form a nozzle of variable cross-section.
  • the posstechniksnebelabborge offers has at least one variable nozzle with a variable nozzle cross-section, the side is formed between an edge of the nozzle plate and a spring-loaded flap, and that increases as the flow rates of the gas flow through the remplisstechniksnebelabscheideurban at least in a limited range of flow rates, a distance between the spring-loaded flap and the edge of the nozzle plate.
  • Fig. 1 is a sectional view through a
  • Fig. 2 is a plan view of a nozzle plate, wherein the elastic element is applied to the nozzle plate
  • Fig. 3 is a plan view of the nozzle plate of Fig. 2, wherein the elastic
  • Element is at least partially lifted off the edge of the nozzle plate
  • Fig. 4 is a sectional view through a
  • a liquid mist separator according to a second embodiment of the invention is a liquid mist separator according to a second embodiment of the invention.
  • Fig. 5 is a sectional view through a
  • a liquid mist separator according to a third embodiment
  • Fig. 6 is a sectional view through a
  • a liquid mist separator according to a fourth embodiment
  • Fig. 7 is a plan view of a nozzle plate according to a fifth
  • Fig. 8 is a plan view of the nozzle plate of Fig. 7, wherein a plurality
  • variable nozzles are extended, and
  • a remplisstiksnebelabborge worn 10 shown in Fig. 1 is used for example in a crankcase ventilation device to oil or oil mist from blow-by gas, which consists of a crankcase of a
  • the copesstiksnebelabscheide annoying 10 has an inlet port 12, through which a gas stream 14, which is loaded with a liquid mist, can flow into the copesstiksnebelabscheide overlooked 10. Accordingly, the copesstechniksnebelabscheide styles 10 has an outlet 16, through which the gas stream 14 can flow from the copesstechniksnebelabscheide overlooked 10. Furthermore, the liquid mist separator 10 has a liquid outlet 18, through which the liquid, which was separated from the gas stream 14, from the
  • nozzles 20 which are formed in a nozzle plate 22.
  • a baffle plate 24 is arranged, which deflects the gas flow flowing through the nozzles 20 on the baffle plate and thereby causes a liquid separation from the gas stream 14.
  • an elastic element 26 is provided, which forms at least one variable nozzle 28 together with the nozzle plate 22.
  • the inlet pipe 12 is for example tubular and has at a lying in the liquid mist separator end of a
  • the elastic element 26 is preferably formed as a piece of hose. Due to the thickening 30 at the inlet connection, the elastic element 26 is held on the inlet connection 12. Additional attachment measures by gluing or clamping from the outside, for example by a hose clamp are of course possible.
  • the elastic member 26 is formed tubular.
  • the nozzle plate 22 is arranged.
  • the nozzle plate 22 is clamped in the elastic element 26, so that the elastic element 26 encloses an edge 32 of the nozzle plate 22.
  • Radially between the edge 32 and the elastic member 26 may form a slit-shaped nozzle when due to a pressure difference upstream and downstream of the nozzle plate 22, the elastic member 26 at least partially lifted from the edge 32 of the nozzle plate 22. As a result, the at least one variable nozzle 28 is formed.
  • the nozzle plate 22 has a plurality, for example four lobes 34, which are directed radially outward and thus expand the elastic member 26 to the outside. In this way, the nozzle plate 22 in the
  • the nozzle plate 22 can also be held in the elastic element 26 and of the elastic element 26 when the elastic element 26 at least partially lifts off from the edge 32 of the nozzle plate 22. Even in such a case, the elastic member 26 is still at least partially against the bulges 34 of the nozzle plate 22 and thus can hold them. In the area of at least one Such bulge 34 may also optionally be fixedly connected to the elastic member 26, for example by means of an adhesive, welding or vulcanization compound.
  • the nozzle plate 22 is disc-shaped except for the protrusions 34 and the nozzles 20 formed in the nozzle plate 22, and thus defines an axial direction, a radial direction, and a circumferential direction.
  • Baffle plate 24 is arranged.
  • the baffle plate 24 extends substantially transversely to the axial direction, so that the gas flow, which exits through the axially directed nozzles 20 and the axially directed variable nozzle 28, is deflected at the baffle plate 24.
  • Baffle plate 24 deflected to achieve the liquid separation there. Thus, unnecessary deflections of the gas flow 14 in front of the nozzle plate 22 can be avoided.
  • the velocity of the gas stream 14 in the nozzles 20 is high enough to achieve sufficient liquid separation at the baffle plate.
  • Nozzle plate 22 lifts and thus the variable nozzle 28 opens.
  • This behavior of the elastic element 26 can be achieved by the choice of the corresponding material with a corresponding modulus of elasticity combined with the choice of the wall thickness of the elastic element 26.
  • variable nozzle 28 By opening the variable nozzle 28 thus increases the
  • the liquid mist separator 10 differs from the first embodiment shown in Figs seesstechniksnebelabscheide observed 10 in that the nozzle plate 22 is additionally held on a housing 36 of the remplisstechniksnebelabscheide observed 10. As a result, a better fixation of the nozzle plate 22 in the housing 36 of the liquid mist separator 10 can be achieved.
  • the nozzle plate is connected by an axially directed retaining bolt 38 with a arranged in the inlet port 12 cross member 40th
  • the liquid mist separator 10 differs from the first embodiment shown in Figs.
  • variable nozzle 28 is not formed on the edge 32 of the nozzle plate, but on an inner surface 42 of the inlet nozzle 12th
  • the elastic element 26 is designed as an annular lip, which rests peripherally circumferentially on the inner surface 42 of the inlet nozzle 12. With increasing flow rates and thus increased pressure differences thus raises the elastic member 26 of the inner surface 42 of the inlet nozzle 12.
  • the liquid mist separator 10 differs from the first embodiment shown in Figs.
  • variable nozzle 28 is formed by a spring-loaded flap 44 which rests against an edge 32 of the nozzle plate 22.
  • the flap 44 lifts off from the edge 32 of the nozzle plate 22 and thus opens the variable nozzle 28.
  • the nozzle plate 22 is held on the inlet port 12.
  • the nozzle plate 22 has a smaller area than the cross-sectional area of the
  • a fifth embodiment of the liquid mist separator 10 shown in FIGS. 7 to 9 differs from the first embodiment shown in FIGS.
  • Wall thickness 46 of the nozzle plate 22 is greater than a wall thickness 48 of the elastic member 26. As a result, the nozzle plate 22 remains substantially dimensionally stable, while the elastic member 26 is flexible.
  • the variable nozzles 28 are formed by slots 50 which are recessed in the material of the nozzle plate 22. At low flow rates, the slots 50 have a non-broadened shape. When the flow rate exceeds a threshold flow rate, the slots 50 widen so that the nozzle area of the variable nozzles 28 increases.
  • the fifth embodiment of the liquid mist separator 10 shown in FIGS. 7 to 9 is the same as that shown in FIGS. 1 to 3

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un dispositif de séparation d'un brouillard de liquide destiné à séparer un liquide d'un flux gazeux (14), notamment de l'huile d'un gaz de fuite, comportant une plaque à buses (22) présentant au moins une buse (20) ouverte en permanence au moins en partie et à travers laquelle le flux gazeux (14) s'écoule, et au moins une plaque d'impact (24) disposée face à l'au moins une buse (20), déviant le flux gazeux (14) et sur laquelle des gouttes de liquide précipitent. Pour réduire la perte de pression, le dispositif de séparation d'un brouillard de liquide (10) comporte au moins une buse variable (28) à section transversale variable, formée entre un bord (32) de la plaque à buses (22) et un élément élastique (26), et lorsque les débits de flux gazeux (14) augmentent à travers le dispositif de séparation d'un brouillard de liquide (10), un écart entre l'élément élastique (26) et le bord (32) de la plaque à buses (22) augmente au moins dans une partie limitée des débits.
PCT/EP2017/053404 2016-03-08 2017-02-15 Dispositif de séparation d'un brouillard de liquide WO2017153136A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016203769.2 2016-03-08
DE102016203769.2A DE102016203769A1 (de) 2016-03-08 2016-03-08 Flüssigkeitsnebelabscheideeinrichtung

Publications (1)

Publication Number Publication Date
WO2017153136A1 true WO2017153136A1 (fr) 2017-09-14

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ID=58054128

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Application Number Title Priority Date Filing Date
PCT/EP2017/053404 WO2017153136A1 (fr) 2016-03-08 2017-02-15 Dispositif de séparation d'un brouillard de liquide

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DE (1) DE102016203769A1 (fr)
WO (1) WO2017153136A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020185369A1 (fr) 2019-03-12 2020-09-17 Cummins Filtration Ip, Inc. Séparateur d'aérosol en bec de canard à affinement toujours ouvert

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017200358A1 (de) * 2017-01-11 2018-07-12 Mahle International Gmbh Ölabscheider für eine Kurbelgehäuseentlüftungseinrichtung einer Brennkraftmaschine
CN108729980B (zh) * 2018-03-30 2020-06-16 北汽福田汽车股份有限公司 油气分离结构和发动机
DE102021133674A1 (de) 2021-12-17 2023-06-22 Technische Universität Dresden Düse mit einstellbarer Strahlgeometrie, Düsenanordnung und Verfahren zum Betrieb einer Düse

Citations (4)

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Publication number Priority date Publication date Assignee Title
WO2007028351A1 (fr) * 2005-09-06 2007-03-15 Mahle International Gmbh Dispositif servant a separer un melange gas/liquide
DE102006024816A1 (de) 2006-05-29 2007-12-06 Mahle International Gmbh Einrichtung für die Entlüftung eines Kurbelgehäuses
US20090100811A1 (en) * 2007-10-17 2009-04-23 Scheckel Benjamin L Inertial Gas-Liquid Separator with Constrictable and Expansible Nozzle Valve Sidewall
EP3020934A1 (fr) * 2014-11-14 2016-05-18 Mahle International GmbH Dispositif de dégazage du carter de vilebrequin

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Publication number Priority date Publication date Assignee Title
DE102008044857B4 (de) * 2008-05-09 2011-08-25 Montaplast GmbH, 51597 Vorrichtung zum Abscheiden von Ölteilchen aus dem Kurbelgehäuseentlüftungsgas einer Brennkraftmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007028351A1 (fr) * 2005-09-06 2007-03-15 Mahle International Gmbh Dispositif servant a separer un melange gas/liquide
DE102006024816A1 (de) 2006-05-29 2007-12-06 Mahle International Gmbh Einrichtung für die Entlüftung eines Kurbelgehäuses
US20090100811A1 (en) * 2007-10-17 2009-04-23 Scheckel Benjamin L Inertial Gas-Liquid Separator with Constrictable and Expansible Nozzle Valve Sidewall
EP3020934A1 (fr) * 2014-11-14 2016-05-18 Mahle International GmbH Dispositif de dégazage du carter de vilebrequin

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020185369A1 (fr) 2019-03-12 2020-09-17 Cummins Filtration Ip, Inc. Séparateur d'aérosol en bec de canard à affinement toujours ouvert
KR20210121247A (ko) * 2019-03-12 2021-10-07 커민즈 필트레이션 아이피, 인크. 항시 개방 개선부를 갖는 덕빌 에어로졸 분리기
CN113507977A (zh) * 2019-03-12 2021-10-15 康明斯滤清系统知识产权公司 具有始终开放的改进的鸭嘴形气溶胶分离器
EP3938075A4 (fr) * 2019-03-12 2022-11-02 Cummins Filtration IP, Inc. Séparateur d'aérosol en bec de canard à affinement toujours ouvert
US11624302B2 (en) 2019-03-12 2023-04-11 Cummins Filtration Ip, Inc. Duckbill aerosol separator with always open refinement
KR102664828B1 (ko) 2019-03-12 2024-05-09 커민즈 필트레이션 아이피, 인크. 항시 개방 개선부를 갖는 덕빌 에어로졸 분리기
US11994049B2 (en) 2019-03-12 2024-05-28 Cummins Filtration Ip, Inc. Duckbill aerosol separator with always open refinement

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