EP2402612A2 - Dispositif d'étanchéité pour les extrémités des spirales d'un compresseur à spirales - Google Patents

Dispositif d'étanchéité pour les extrémités des spirales d'un compresseur à spirales Download PDF

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Publication number
EP2402612A2
EP2402612A2 EP11004304A EP11004304A EP2402612A2 EP 2402612 A2 EP2402612 A2 EP 2402612A2 EP 11004304 A EP11004304 A EP 11004304A EP 11004304 A EP11004304 A EP 11004304A EP 2402612 A2 EP2402612 A2 EP 2402612A2
Authority
EP
European Patent Office
Prior art keywords
sealing
sealing strip
groove
housing
sealing surface
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.)
Withdrawn
Application number
EP11004304A
Other languages
German (de)
English (en)
Other versions
EP2402612A3 (fr
Inventor
Hubert Hagel
Jürgen Licht
Stefan Cölsch
Joachim Nusser
Andreas Lechleiter
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.)
Handtmann Systemtechnik GmbH and Co KG
Original Assignee
Handtmann Systemtechnik GmbH and Co KG
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 Handtmann Systemtechnik GmbH and Co KG filed Critical Handtmann Systemtechnik GmbH and Co KG
Publication of EP2402612A2 publication Critical patent/EP2402612A2/fr
Publication of EP2402612A3 publication Critical patent/EP2402612A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F04C18/0223—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving with symmetrical double wraps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid

Definitions

  • the invention relates to a charging device for the compression of charge air for an internal combustion engine according to the preamble of claim 1.
  • turbochargers which are driven by the exhaust gas flow of the engine.
  • charging devices that work on the displacement principle.
  • inter alia devices have become known, which work with a scroll compressor.
  • a displacer is moved along a helical housing.
  • the displacer is also helical and driven by an eccentric with a drive shaft.
  • Scroll compressors have been described, for example, in the references DE 10 2007 043 579 A1 .
  • the Verdrticianerspiralen in such charging devices are slidably disposed on a housing and provided for sealing the charge air volume between the end face of the VerdrDeutscherspirale and the housing with a sealing strip.
  • the housing is in this case formed by two housing shells, at the housing bottom of each of said seal is made. Sealing strips in charging devices according to the prior art in this case have a rectangular geometry and are inserted in grooves in the positive displacement spiral and a housing spiral.
  • the object of the invention is therefore to propose a charging device, are made possible at the higher speeds and / or larger strokes of the eccentric.
  • a loading device is characterized in that the sealing strip has a foot region dipping into the groove and a head region standing in front of the groove, wherein the head region is wider than the foot region.
  • the head region of the sealing strip according to the invention has a sealing surface, wherein an enlargement of the area available for the design of the sealing surface is accompanied by the enlargement of the head region according to the invention relative to the foot region.
  • the sealing surface also forms a sliding or running surface. The enlarged head area not only improves the sealing properties, but also the sliding properties associated with a reduction in wear. This in turn allows the desired speed increase or Huberhöhung the eccentric.
  • the width of the foot region of the sealing strip substantially corresponds to the groove width in which the sealing strip is received. This results in a good Guiding the sealing strip and a reduction of the gap between the sealing strip and groove gaps, which in turn increases the sealing ability.
  • a sealing strip according to the invention is used on the narrow side of a positive displacement spiral, so that it slidingly and the charge air volume compared to the static, the charge air volume limiting housing is sealingly guided with the movement of the displacement spiral.
  • the sealing surface is formed flat in the head area. This corresponds to a structure of a corresponding charging device, in which the housing regions, on which the sealing surface is guided in a sliding manner, are also flat.
  • wear-reducing elements are additionally arranged in the sealing surface of the head part.
  • Such wear-reducing elements can be tribological structures or material orders.
  • cavities in the sealing surface as a tribological structure on the sealing, sliding or running surface can reduce the overall friction.
  • a corresponding material order can be helpful, the friction and thus also reduces wear.
  • a corresponding material depot may also be provided in cavities in a particular embodiment.
  • the sealing strip is T-shaped. This is a structurally simple form to simultaneously form a foot area in conjunction with a head area according to the invention.
  • such a sealing strip can be made at least partially as a cast and / or pressed part. In principle, however, a machining production is possible, and this usually with greater effort connected is.
  • such a sealing strip can for example be cast as a blank and pressed into a final shape and / or machined.
  • a sealing strip according to the invention can also be made of different materials.
  • the focus is on the one hand on sealing properties and sliding properties on the other.
  • the structure of such material combinations can be different.
  • a combination of materials with a layer structure in question for example, the foot area and most of the head area can be made of an extremely dimensionally stable material, while the sealing surface is provided with a friction-reducing coating.
  • the sealing surface is provided with a friction-reducing coating.
  • even areas of particularly dimensionally stable material can be stored.
  • a composite material would be conceivable using particles in a matrix, wherein either the matrix or the particles each have a certain property.
  • a matrix of a material with good sealing properties would be conceivable, in which particles with friction-reducing properties are embedded to promote sliding behavior.
  • a matrix of particularly dimensionally stable material can also embed both sealing and friction-reducing particles.
  • the use of a matrix of friction-reducing material embedding sealing and / or shape-stabilizing particles would also be conceivable.
  • the groove base, in which the sealing strip is inserted provided with a connection to the high pressure side of the charging device.
  • the sealing strip is pressed by the pressure conditions on the sealing surface during operation, whereby the tightness is influenced pressure-dependent. This not only improves the tightness at high boost pressures, but also reduces wear, since the friction is reduced by a low contact pressure at lower boost pressures.
  • the charging device 1 comprises a housing 2 in which a supercharger shaft 3 is rotatably mounted externally driven via a pulley 4.
  • the loader shaft 3 comprises a crank-like eccentric drive 5 with the eccentricity E with respect to the axis of the loader shaft 3.
  • a positive displacement spiral 6 is driven in a periodic motion.
  • the movement of the displacer coil 6 is such that there are movable closed chambers that promote and compress charge air from an entrance to an exit.
  • the displacement spiral 6 is sealed off from the housing 2 formed by two housing shells 2 a / b by sealing strips 7, 8.
  • the sealing strips 8 in this case seal a central web 9 with respect to housing ribs 10, while the sealing strips 7 seal the displacement spiral 6 with respect to the bottom 11 of the housing shells 2 a / b.
  • the displacement spiral 6 is constructed substantially symmetrically on both sides of the central web 9 and is supported by this.
  • the sealing strips 8 are constructed according to the prior art and in FIG. 2 shown.
  • the magnification according to FIG. 2 shows the sealing strips 8 with rectangular cross-section, which are embedded in a corresponding groove 11.
  • This type of sealing strips can be used anywhere without problems where no greater speeds are to be expected during operation of the charging device. So far, such sealing strips 8 have been used for the entire sealing of the positive displacement spiral, resulting in areas in which, especially at high speeds or larger Exzenterh Wegney very high sliding speeds, disadvantages in terms of their wear resistance.
  • the sealing strip 7 has a foot region 13 and a head region 14 widened in relation to the foot region 13 on.
  • the head portion 14 has a sealing surface 16, which is significantly enlarged compared to conventional sealing strips, such as a sealing strip 8 and at the same time forms a sliding or running surface.
  • FIG. 4 a sealing strip 7 is shown in perspective in a VerdrDeutscherspirale 6, wherein in the sealing surface 6 recesses or cavities 18 are shown, which can serve as such tribological structures. Due to the large width of the head region 14 and the enlargement of the sealing surface associated therewith, a great constructive freedom is available for the arrangement of such tribological structures on the sealing surface 16, which at the same time forms the running surface.
  • such structures in the form of cavities can also be provided with further functional elements, for example, they can be completely or partially filled with friction-reducing and / or sealing material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Rotary Pumps (AREA)
EP11004304.9A 2010-07-02 2011-05-25 Dispositif d'étanchéité pour les extrémités des spirales d'un compresseur à spirales Withdrawn EP2402612A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010025988A DE102010025988A1 (de) 2010-07-02 2010-07-02 Ladevorrichtung zur Verdichtung von Ladeluft

Publications (2)

Publication Number Publication Date
EP2402612A2 true EP2402612A2 (fr) 2012-01-04
EP2402612A3 EP2402612A3 (fr) 2015-03-11

Family

ID=44246553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11004304.9A Withdrawn EP2402612A3 (fr) 2010-07-02 2011-05-25 Dispositif d'étanchéité pour les extrémités des spirales d'un compresseur à spirales

Country Status (2)

Country Link
EP (1) EP2402612A3 (fr)
DE (1) DE102010025988A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232313A1 (fr) * 2022-05-30 2023-12-07 Trelleborg Sealing Solutions Germany Gmbh Collecteur de courant d'arbre et ensemble arbre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603462A1 (de) 1975-02-07 1976-08-19 Aginfor Ag Verdraengermaschine fuer kompressible medien
EP0899423A1 (fr) 1997-08-26 1999-03-03 SIG Schweizerische Industrie-Gesellschaft Machine de déplacement de fluide du type à spirale
DE102007043579A1 (de) 2007-09-13 2009-03-19 Handtmann Systemtechnik Gmbh & Co. Kg Verdrängermaschine nach dem Spiralprinzip
DE102007043595B4 (de) 2007-09-13 2009-12-24 Handtmann Systemtechnik Gmbh & Co. Kg Verdrängermaschine nach dem Spiralprinzip

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140512A1 (de) * 1981-10-13 1983-04-21 Fa. Jos. L. Meyer, 2990 Papenburg Verdraengermaschine
JPH01106989A (ja) * 1987-10-20 1989-04-24 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP2835575B2 (ja) * 1994-10-25 1998-12-14 大同メタル工業株式会社 スクロール型コンプレッサー用シール材
JPH08165994A (ja) * 1994-12-14 1996-06-25 Daikin Ind Ltd スクロール型流体装置
US6074185A (en) * 1998-11-27 2000-06-13 General Motors Corporation Scroll compressor with improved tip seal
JP2002195175A (ja) * 2000-12-27 2002-07-10 Tokico Ltd スクロール式流体機械
JP2002213374A (ja) * 2001-01-18 2002-07-31 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP2003184883A (ja) * 2001-12-20 2003-07-03 Nissan Motor Co Ltd 軸受摺動部材
JP2006291925A (ja) * 2005-04-14 2006-10-26 Sanden Corp スクロール型流体機械
JP2007231796A (ja) * 2006-02-28 2007-09-13 Anest Iwata Corp スクロール流体機械におけるチップシール

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603462A1 (de) 1975-02-07 1976-08-19 Aginfor Ag Verdraengermaschine fuer kompressible medien
EP0899423A1 (fr) 1997-08-26 1999-03-03 SIG Schweizerische Industrie-Gesellschaft Machine de déplacement de fluide du type à spirale
DE102007043579A1 (de) 2007-09-13 2009-03-19 Handtmann Systemtechnik Gmbh & Co. Kg Verdrängermaschine nach dem Spiralprinzip
DE102007043595B4 (de) 2007-09-13 2009-12-24 Handtmann Systemtechnik Gmbh & Co. Kg Verdrängermaschine nach dem Spiralprinzip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232313A1 (fr) * 2022-05-30 2023-12-07 Trelleborg Sealing Solutions Germany Gmbh Collecteur de courant d'arbre et ensemble arbre

Also Published As

Publication number Publication date
EP2402612A3 (fr) 2015-03-11
DE102010025988A1 (de) 2012-01-26

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