EP2450530B1 - Dispositif d'étanchéification du piston de machines à piston rotatives - Google Patents

Dispositif d'étanchéification du piston de machines à piston rotatives Download PDF

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Publication number
EP2450530B1
EP2450530B1 EP11179629.8A EP11179629A EP2450530B1 EP 2450530 B1 EP2450530 B1 EP 2450530B1 EP 11179629 A EP11179629 A EP 11179629A EP 2450530 B1 EP2450530 B1 EP 2450530B1
Authority
EP
European Patent Office
Prior art keywords
piston
rotor
sealing strips
sealing
rotor segments
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.)
Not-in-force
Application number
EP11179629.8A
Other languages
German (de)
English (en)
Other versions
EP2450530A1 (fr
Inventor
Eggert GÜNTHER
Norbert GÜNTHER
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.)
EN3 GmbH
Original Assignee
EN3 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 EN3 GmbH filed Critical EN3 GmbH
Publication of EP2450530A1 publication Critical patent/EP2450530A1/fr
Application granted granted Critical
Publication of EP2450530B1 publication Critical patent/EP2450530B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/10—Sealings for working fluids between radially and axially movable parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/02—Radially-movable sealings for working fluids
    • F01C19/04—Radially-movable sealings for working fluids of rigid material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/08—Axially-movable sealings for working fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/22—Rotary-piston machines or engines of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth- equivalents than the outer member

Definitions

  • the invention relates to a device for sealing the rotary piston against the surrounding housing wall of rotary compression and -Expansionsmaschinen.
  • Wankel a motor type was developed, which has only two components moving around the working space: a housing with a trochoidal raceway and a rotary piston, also derived from a trochoid, as the inner one Enveloping body of the housing track. On this piston can be arranged sealing strips that meet the condition of the unchanged geometric shape.
  • the engine type has become known as a Wankel engine.
  • the rotor consists of two parallel rotor-disc segments, which are pressed by spring forces on the housing wall so that they lie there sealingly with their surface and a flow around is not possible and in that the seal between the Rotor segment discs resulting joints are sealed by sealing strips within the joints and connect these sealing strips to the sealing strips, which rest against the housing track so springing that results in a system of continuous planar sealing lines, which no longer has interruptions.
  • the inventive device for sealing the piston of rotary piston machines wherein the rotary piston consists of two rotor segments, characterized in that the first rotor segment has on its inner side a centric center of the piston ring groove, in which an annular centric Rezess, on the inside of the second rotor segment is arranged, fittingly engages, and that the two rotor segments having these permanently connected sealing strips.
  • the sealing strips of the first rotor segment connect to the annular groove and the sealing strips of the second rotor segment are connected to the recess.
  • relief cutouts are arranged.
  • the sealing strips are graded over a portion of their axial extent halfway along the length and width of the interior of the piston, so that overlap surfaces arise, and overlap the sealing strips when joining the rotor segments with the stepped sealing strip of the respective opposite side against each other, pairwise.
  • the sealing strips and the two rotor segments consist either of the same material or of another suitable firmly inserted material than the two rotor segments.
  • An advantage of the invention is that the rotor segments are formed so that they have solid sealing strips at the radial tips, which extend over the entire width of the rotor segments.
  • the sealing strips receive a soft elasticity in the circumferential direction through the peripheral cut-outs in the piston material next to them, whereby a relation to the surrounding material lower elastic stiffness is effected.
  • the sealing strip arrangement according to the invention can be used especially, but not exclusively, in miniaturized rotary-piston machines.
  • FIGS. 1 . 2 and 3 The invention is exemplified by the FIGS. 1 . 2 and 3 described. To show the FIGS. 1 and 2 the two rotor segments in different directions and FIG. 3 the composite piston.
  • FIGS. 1 and 2 show the opened piston.
  • the rotor of the rotary piston machine according to the invention in particular a rotary piston machine consists of the rotor segments 1 and 2, which have a sealing acting against the central shaft seal by an annular recess 3 is fitted into a ring groove 4.
  • the first rotor segment 1 on the side facing the second rotor segment 2 has a centric to the center of the piston ring groove 4, in which the located on the rotor segment 2 annular central recess 3 (ring spring) is inserted fittingly.
  • Both rotor segments 1 and 2 are firmly connected to existing from the same material or other suitable firmly inserted material sealing strips 5 and 6.
  • the sealing strips 5 and 6 are stepped over half of their axial extent and width to the interior of the piston by milled cover surfaces 7, so that when joining the rotor segments 1 and 2, the mutual, paired nesting of the sealing strips 5 and 6 with their overlap surfaces 7 is enabled. (please refer FIG. 3 )
  • the required elasticity of the sealing strips 5 and 6 for radial sealing against the housing track is achieved in that in the rotor segments 1 and 2 in addition to the sealing strips 5 and 6 in the surrounding material of the rotor segments 1 and 2 cutouts (so-called relief rounding) 10 in a suitable geometric shape are introduced, which have the function of a stress relief, when acting on the sealing strips 5 and 6 in the circumferential direction of the rotor friction and pressure forces that require a counter-springing effect of the sealing strips 5 and 6.
  • receiving holes 8 are arranged for receiving springs 9 between the piston center and annular groove 4 and Recess.
  • the inner springs 9 By the inner springs 9, the rotor segments 1 and 2 are pressed apart against the end faces of the housing. They thus form a piston which automatically applies from the inside to the housing sides of the rotary piston machine and seals the gas chambers against each other.
  • the cutouts 10 on the outer sides of the rotor segments 1 and 2 cause the media forces acting in the parting lines of the rotor segments 1 and 2 as acting after the end faces of the rotor frictional forces are largely compensated by acting from the outside media forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Devices (AREA)
  • Rotary Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (6)

  1. Piston de machines à piston rotatif comprenant un dispositif pour l'étanchéification du piston, dans lequel le piston rotatif se compose de deux segments de rotor, caractérisé en ce que le premier segment de rotor (1) présente sur son côté intérieur une rainure annulaire (4) centrée par rapport au milieu du piston, dans laquelle s'engage de façon ajustée un retrait centré annulaire (3), qui est disposé sur le côté intérieur du deuxième segment de rotor (2), et en ce que les deux segments de rotor (1, 2) présentent des baguettes d'étanchéité (5, 6) solidement assemblées à ceux-ci.
  2. Piston selon la revendication 1, caractérisé en ce que les baguettes d'étanchéité (5) du premier segment de rotor (1) se raccordent à la rainure annulaire (4) et les baguettes d'étanchéité (6) du deuxième segment de rotor (2) sont assemblées au retrait (3).
  3. Piston selon la revendication 1 ou 2, caractérisé en ce que des fraisages de détente (10) sont disposés dans les segments de rotor (1, 2) à côté des baguettes d'étanchéité (5, 6).
  4. Piston selon la revendication 1, 2 ou 3, caractérisé en ce que les baguettes d'étanchéité (5, 6) sont étagées sur une partie de leur extension axiale en étant orientées sur une demi-longueur et une demi-largeur vers l'intérieur du piston, de telle manière qu'il apparaisse ainsi des faces de recouvrement (7) et que les baguettes d'étanchéité (5, 6) se recouvrent par paires, engagées l'une dans l'autre, lors de l'assemblage des segments de rotor (1, 2), avec la baguette d'étanchéité étagée du côté opposé respectif.
  5. Piston selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les baguettes d'étanchéité (5, 6) et les deux segments de rotor (1, 2) sont constitués du même matériau.
  6. Piston selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les baguettes d'étanchéité (5, 6) sont constituées d'un autre matériau approprié, solidement inséré, que les deux segments de rotor (1, 2).
EP11179629.8A 2006-12-02 2007-11-19 Dispositif d'étanchéification du piston de machines à piston rotatives Not-in-force EP2450530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006057003A DE102006057003A1 (de) 2006-12-02 2006-12-02 Prinzip und System zur Abdichtung des Kolbens von Rotationskolbenmaschinen
EP07822696.6A EP2100009B1 (fr) 2006-12-02 2007-11-19 Système d'étanchéité pour le piston de machines à piston rotatif

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP07822696.6A Division EP2100009B1 (fr) 2006-12-02 2007-11-19 Système d'étanchéité pour le piston de machines à piston rotatif
EP07822696.6A Division-Into EP2100009B1 (fr) 2006-12-02 2007-11-19 Système d'étanchéité pour le piston de machines à piston rotatif
EP07822696.6 Division 2007-11-19

Publications (2)

Publication Number Publication Date
EP2450530A1 EP2450530A1 (fr) 2012-05-09
EP2450530B1 true EP2450530B1 (fr) 2016-03-23

Family

ID=39153648

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11179629.8A Not-in-force EP2450530B1 (fr) 2006-12-02 2007-11-19 Dispositif d'étanchéification du piston de machines à piston rotatives
EP07822696.6A Not-in-force EP2100009B1 (fr) 2006-12-02 2007-11-19 Système d'étanchéité pour le piston de machines à piston rotatif

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07822696.6A Not-in-force EP2100009B1 (fr) 2006-12-02 2007-11-19 Système d'étanchéité pour le piston de machines à piston rotatif

Country Status (11)

Country Link
US (1) US8920147B2 (fr)
EP (2) EP2450530B1 (fr)
JP (1) JP4926252B2 (fr)
KR (1) KR20090096497A (fr)
CN (1) CN101558218B (fr)
AU (1) AU2007326323B2 (fr)
BR (1) BRPI0719694A2 (fr)
CA (1) CA2671017C (fr)
DE (1) DE102006057003A1 (fr)
RU (1) RU2463458C2 (fr)
WO (1) WO2008065017A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE102022211572A1 (de) 2022-11-02 2024-05-02 Knapp e-mobility GmbH Dichteinrichtung für einen Kolben eines Kreiskolbenmotor

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DE102006057003A1 (de) 2006-12-02 2008-06-05 GÜNTHER, Eggert Prinzip und System zur Abdichtung des Kolbens von Rotationskolbenmaschinen
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DE102010040958B3 (de) * 2010-09-17 2012-03-15 En3 Gmbh Energy, Engines, Engineering Abdichtung des Rotors von Rotationskolbenmaschinen
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DE102012011167A1 (de) 2012-06-05 2013-12-05 En3 Gmbh Rotationskolbenvorrichtung mit Flashverdampfung
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DE102013012052A1 (de) * 2013-07-11 2015-01-15 Wilhelm Brinkmann Brinkmann-Turbinen mit aktiven Dichtungen, Vorverdichtung, Nachexpansion sowie Wankelzweitaktfunktion
DE102014107735B4 (de) * 2014-06-02 2018-04-19 Schwäbische Hüttenwerke Automotive GmbH Flügel mit axialer Abdichtung
CN105041384A (zh) * 2014-07-21 2015-11-11 摩尔动力(北京)技术股份有限公司 端面密封系统
EP3101257A1 (fr) 2015-06-03 2016-12-07 EN3 GmbH Groupe de transfert thermique et procédé d'exécution d'un processus circulatoire thermodynamique à l'aide d'un groupe de transfert thermique
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022211572A1 (de) 2022-11-02 2024-05-02 Knapp e-mobility GmbH Dichteinrichtung für einen Kolben eines Kreiskolbenmotor

Also Published As

Publication number Publication date
DE102006057003A1 (de) 2008-06-05
RU2463458C2 (ru) 2012-10-10
BRPI0719694A2 (pt) 2013-12-24
CA2671017C (fr) 2014-01-21
JP2010511822A (ja) 2010-04-15
CA2671017A1 (fr) 2008-06-05
US20100150762A1 (en) 2010-06-17
CN101558218A (zh) 2009-10-14
WO2008065017A1 (fr) 2008-06-05
AU2007326323A1 (en) 2008-06-05
AU2007326323B2 (en) 2013-08-01
JP4926252B2 (ja) 2012-05-09
EP2100009A1 (fr) 2009-09-16
KR20090096497A (ko) 2009-09-10
CN101558218B (zh) 2012-03-21
RU2009125224A (ru) 2011-01-10
EP2450530A1 (fr) 2012-05-09
EP2100009B1 (fr) 2016-03-16
US8920147B2 (en) 2014-12-30

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