EP2597255A2 - Paired seal strips for rotary piston engines - Google Patents

Paired seal strips for rotary piston engines Download PDF

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Publication number
EP2597255A2
EP2597255A2 EP20120192497 EP12192497A EP2597255A2 EP 2597255 A2 EP2597255 A2 EP 2597255A2 EP 20120192497 EP20120192497 EP 20120192497 EP 12192497 A EP12192497 A EP 12192497A EP 2597255 A2 EP2597255 A2 EP 2597255A2
Authority
EP
European Patent Office
Prior art keywords
sealing strips
rotary piston
sealing
paired
strips
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Withdrawn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
EP20120192497
Other languages
German (de)
French (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 EP2597255A2 publication Critical patent/EP2597255A2/en
Withdrawn legal-status Critical Current

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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
    • F01C19/02—Radially-movable sealings for working fluids
    • F01C19/06—Radially-movable sealings for working fluids of resilient 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3441—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F01C1/3442—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • 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
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • 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
    • F01C19/085—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or engines, e.g. gear machines or engines
    • 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
    • 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
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0845—Vane tracking; control therefor by mechanical means comprising elastic means, e.g. springs

Definitions

  • the invention relates to an embodiment of the sealing strips of rotary piston machines to reduce the friction between the wings and housing track and to prevent media leaks.
  • the sealing strips of rotary piston machines are designed so that they are pressed during movement with spring force, centrifugal force or media pressure against the housing track or the side surfaces of the housing and thus seal the working spaces of the rotary piston machine against each other.
  • a friction between the sealing strips and housing parts is connected with these force effects at the same time.
  • a lubricant is added to the working fluid to improve the sealing effect and to reduce friction.
  • mostly harmful media leaks - 'blow-by' between the work areas can not be completely prevented.
  • the present invention has for its object to reduce friction and leakage on the sealing strips by the media forces are used in the working chambers for this task.
  • Starting point for the solution of the task is DE 102006057003 A1 ,
  • sealing strips for rotary piston machines which are divided transversely, axially overlap and adapt to the side walls of the rotary piston machine and have flexible resilient sealing strips, which are respectively inserted into the sealing strips at the radial outer edges so that they from the sealing strips protrude.
  • the sealing strips extend in pairs together over the entire width of the rotary piston machine and follow an axial spread of the sealing strips.
  • the sealing strips have a leading groove for receiving the sealing strips.
  • the sealing strips are held therein by locking pins.
  • the sealing strips are arranged several times, so that packages are formed from sealing strips.
  • the protruding from the sealing strips sealing strips are bent either on the housing track in the circumferential direction or in both circumferential directions
  • Another feature of the invention is that the forces acting on the projected end face of the sealing strip pair media forces can cancel with the forces acting on the flexible components against the housing wall of the machine and thus a contour control of the wings against the projected end faces of the sealing strips Must work.
  • FIG. 1 shows the rotary piston machine with the invention arranged sealing strips.
  • the rotor 2 rotates in the housing 1 according to the characteristic of a rotary piston machine with an axial offset.
  • the radial sealing strips 3 are arranged in the radial guide grooves 4.
  • the inventive flexible resilient sealing strips 5a, 5b are inserted in pairs at the radial outer edge, so that they project from the sealing strips 3a, 3b,
  • a sealing strip 3 is constructed so that it has a one-sided flattening 7.
  • the sealing strips 3a, 3b are placed in pairs with their flattenings 7 on each other, so that they extend together across the width of the rotor 2.
  • In the sealing strips 3a, 3b are each a leading groove 6 for receiving the flexible resilient sealing strips 5a, 5b.
  • holes 8 for locking pins 15a, 15b, holes 9 for receiving a spreading spring 14 and holes 10 for receiving the pressure springs 13a, 13b are provided.
  • FIG. 4 shows a flexible sealing strip 5a, 5b according to the invention. These are each provided with a hole 11 and a slot 12. The length of the sealing strips 5a, 5b corresponds to the width of the rotor 2.
  • FIG. 5 shows an exploded view of the sealing strips 3a, 3b with the flexible sealing strip 5a, 5b according to the invention.
  • a sealing strip 5 is arranged in such a way that when joining the two sealing strips 3a, 3b both sealing strips 5a, 5b in pairs extend together over the entire width of the rotor 2.
  • the sealing strips 5a, 5b are held by the locking pins 15a, 15b through holes 8 in the sealing strip.
  • Mutually a hole 11 and a slot 12 of the sealing strips 5a, 5b are opposite.
  • a spreading spring 14 is arranged in the holes 9 of the sealing strips 3.
  • the sealing strips 3a, 3b are pressed against the side walls of the rotary piston machine.
  • the sealing strips 5a, 5b are arranged such that each sealing strip is fastened with a locking pin 15a, 15b in a sealing strip 3a through the hole 11 and at the same time with the oblong hole 12 in the opposite one Led sealing strip 3b and thus a radial release of the sealing strip is prevented.
  • This makes it possible that the sealing strips 5a, 5b of the axial spreading of the sealing strips 3a, 3b can follow, which is effected by the spreading spring 14.
  • FIG. 6 shows the composite sealing strips 3 with the flexible sealing strips 5a, 5b according to the invention. Due to the media pressure in the rotary piston machine right and left of the sealing strip 3, the sealing strips 5a, 5b brought to bear against the tread and the work spaces are closed.
  • the arrangement of the sealing strips 5a, 5b can be done several times, so that packages of sealing strips 5 can be formed, in which sealing strips 5a, 5b overlap each other and form a seal of the rotor 2 against the housing 1.
  • a part of the sealing strip packet in the direction of rotation of the rotor, another part against the direction of rotation is pre-bent so that the sealing strips create resiliently against the housing track.
  • the media pressures in the working cells of the machine cause the sealing strips 5 to slide resiliently over the housing track.
  • the entire sealing strip package can also be bent only in the circumferential direction.
  • the sealing strips 5a, 5b are connected to the sealing strips 3a, 3b, so that a radial balance of forces due to the media pressures on the sealing strips 3a, 3b and pressed against the housing raceway sealing strip 5a, 5b is effected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Compressor (AREA)

Abstract

The inner sealing strips (3) are arranged in a radial guide grooves (4) provided in a rotor (2). A pair of flexible resilient outer sealing strips (5a,5b) is inserted at outer edges of the inner sealing strips by inserting the pins of pair of flexible resilient outer sealing strips into prominent groove provided in inner sealing strips.

Description

Gegenstand der Erfindung ist eine Ausführung der Dichtleisten von Rotationskolbenmaschinen zur Reduzierung der Reibung zwischen Flügeln und Gehäuselaufbahn und zur Verhinderung von Medienleckagen.The invention relates to an embodiment of the sealing strips of rotary piston machines to reduce the friction between the wings and housing track and to prevent media leaks.

Stand der TechnikState of the art

Nach dem bekannten Stand der Technik werden die Dichtleisten von Rotationskolbenmaschinen so ausgeführt, dass sie bei der Bewegung mit Federkraft, Fliehkraft oder Mediendruck gegen die Gehäuselaufbahn oder die Seitenflächen des Gehäuses gedrückt werden und somit die Arbeitsräume der Rotationskolbenmaschine gegeneinander abdichten. Stets ist mit diesen Kraftwirkungen zugleich eine Reibung zwischen Dichtleisten und Gehäuseteilen verbunden. Bei den meisten Rotationskolbenmaschinen wird dem Arbeitsmedium ein Schmiermittel zugegeben, um die Dichtwirkung zu verbessern und die Reibung zu reduzieren. Trotz dieser Maßnahmen können zumeist schädliche Medienleckagen - ,Blow-By'- zwischen den Arbeitsräumen nicht gänzlich verhindert werden.According to the known prior art, the sealing strips of rotary piston machines are designed so that they are pressed during movement with spring force, centrifugal force or media pressure against the housing track or the side surfaces of the housing and thus seal the working spaces of the rotary piston machine against each other. Always a friction between the sealing strips and housing parts is connected with these force effects at the same time. In most rotary piston engines, a lubricant is added to the working fluid to improve the sealing effect and to reduce friction. Despite these measures, mostly harmful media leaks - 'blow-by' between the work areas can not be completely prevented.

Ein anderer Weg zur Verminderung der Reibung bei Flügelzellenmaschinen besteht darin, die Steuerung der Flügel anstelle durch die Laufbahn mit in die Seitenwände der Flügelzellenmaschine angeordneter Führungsringe durchzuführen. Einen entsprechenden Vorschlag enthält beispielsweise die Patentveröffentlichung DE 102006028807 A1 für einen Druckzellen-Motor. Eine praktische Umsetzung ist nicht bekannt geworden. Mit seitlich angeordneten Führungsringen besteht zwar die Möglichkeit der Verminderung der Reibung, gleichzeitig entstehen jedoch weitere Leckagefenster für den Medienübertritt zwischen den Zellen sowie zum Bereich der Rotorachse.Another way to reduce the friction in vane machines is to perform the control of the wings instead of through the track with arranged in the side walls of the vane machine guide rings. A corresponding proposal contains, for example, the patent publication DE 102006028807 A1 for a pressure cell engine. A practical implementation has not become known. With laterally arranged Guide rings are indeed the possibility of reducing the friction, but at the same time there are more leakage windows for the media transfer between the cells and the area of the rotor axis.

Bekannt ist auch die Anordnung von flexiblen Blechen an den Spitzen von Dichtleisten, die sich an die Gehäuselaufbahn anlegen und so Reibung und Leckagen reduzieren sollen. Insbesondere bei diesen bekannten Vorschlägen wird das physikalische Prinzip des inneren Ausgleichs der Systemkräfte nicht berücksichtigt.Also known is the arrangement of flexible sheets at the tips of sealing strips that bear against the housing track and thus reduce friction and leakage. In particular, these known proposals, the physical principle of the internal compensation of the system forces is not considered.

In der Veröffentlichung DE 102006057003 A1 wird ein quer zu Drehachse geteilter Rotor beschrieben, der mit radialen, quer geteilten, sich axial überlappenden Dichtleisten ausgestattet ist, die sich durch beispielsweise innere Federkräfte an die Seitenwände der Rotationskolbenmaschine anpassen können.In the publication DE 102006057003 A1 a described transverse to the axis of rotation rotor is described, which is equipped with radial, transversely divided, axially overlapping sealing strips, which can be adapted by, for example, internal spring forces on the side walls of the rotary piston machine.

Darstellung der ErfindungPresentation of the invention

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, Reibung und Leckagen an den Dichtleisten zu reduzieren, indem die Medienkräfte in den Arbeitskammern für diese Aufgabe eingesetzt werden. Ausgangspunkt für die Lösung der Aufgabe ist DE 102006057003 A1 .The present invention has for its object to reduce friction and leakage on the sealing strips by the media forces are used in the working chambers for this task. Starting point for the solution of the task is DE 102006057003 A1 ,

Die Aufgabe wird durch paarige Dichtleisten für Rotationskolbenmaschinen gelöst, welche quer geteilt sind, sich axial überlappen und sich an die Seitenwände der Rotationskolbenmaschine anpassen und flexible federnde Dichtstreifen aufweisen, die jeweils in die Dichtleisten an deren radialen Außenkanten so eingefügt sind, dass sie aus den Dichtleisten herausragen. Die Dichtstreifen reichen paarweise gemeinsam über die gesamte Breite der Rotationskolbenmaschine und folgen einer axialen Spreizung der Dichtleisten.The object is achieved by paired sealing strips for rotary piston machines, which are divided transversely, axially overlap and adapt to the side walls of the rotary piston machine and have flexible resilient sealing strips, which are respectively inserted into the sealing strips at the radial outer edges so that they from the sealing strips protrude. The sealing strips extend in pairs together over the entire width of the rotary piston machine and follow an axial spread of the sealing strips.

Die Dichtleisten weisen für die Aufnahme der Dichtstreifen eine führende Nute auf. Die Dichtstreifen werden darin durch Arretierungsstifte gehalten.The sealing strips have a leading groove for receiving the sealing strips. The sealing strips are held therein by locking pins.

In einer Ausführungsform werden die Dichtstreifen mehrfach angeordnet, so dass Pakete aus Dichtstreifen gebildet werden.In one embodiment, the sealing strips are arranged several times, so that packages are formed from sealing strips.

Die aus den Dichtleisten herausragenden Dichtstreifen werden entweder an der Gehäuselaufbahn in Umfangsrichtung oder in beide Umfangsrichtungen umgebogenThe protruding from the sealing strips sealing strips are bent either on the housing track in the circumferential direction or in both circumferential directions

Durch die erfindungsgemäße Lösung werden jeweils axial durchgehende, von Gehäuseseitenwand zu Gehäuseseitenwand reichende Sperren gegen Medienübertritte gebildet mit gleichzeitig minimaler Reibung an der Gehäusewand.By means of the solution according to the invention, in each case axially continuous barriers extending from the housing side wall to the housing side wall are formed against media transitions with at the same time minimal friction on the housing wall.

Eine weitere erfindungsgemäße Eigenschaft besteht darin, dass sich die auf die projizierte Stirnfläche des Dichtleistenpaares wirkenden Medienkräfte mit den Kräften aufheben können, die an den flexiblen Bauteilen gegen die Gehäusewand der Maschine wirken und somit eine Kontursteuerung der Flügel nicht gegen die auf die projizierte Stirnflächen der Dichtleisten arbeiten muss.Another feature of the invention is that the forces acting on the projected end face of the sealing strip pair media forces can cancel with the forces acting on the flexible components against the housing wall of the machine and thus a contour control of the wings against the projected end faces of the sealing strips Must work.

Ausführung der ErfindungEmbodiment of the invention

Die erfindungsgemäße Lösung wird an einem Ausführungsbeispiel beschrieben. Hierzu zeigen

  • Figur 1 die Rotationskolbenmaschine mit den erfindungsgemäß angeordneten Dichtleisten,
  • Figur 2 und 3 den Aufbau einer geteilten Dichtleiste,
  • Figur 4 einen erfindungsgemäßen flexiblen Dichtstreifen,
  • Figur 5 eine Explosionszeichnung der Dichtleisten mit den erfindungsgemäßen flexiblen Dichtstreifen und
  • Figur 6 die zusammengesetzten Dichtleisten mit den erfindungsgemäßen flexiblen Dichtstreifen.
The solution according to the invention will be described on an exemplary embodiment. Show this
  • FIG. 1 the rotary piston machine with the sealing strips according to the invention,
  • FIGS. 2 and 3 the construction of a split sealing strip,
  • FIG. 4 a flexible sealing strip according to the invention,
  • FIG. 5 an exploded view of the sealing strips with the flexible sealing strip according to the invention and
  • FIG. 6 the composite sealing strips with the flexible sealing strip according to the invention.

Es bedeuten in den Bildern 1 bis 6:

1
Gehäuse einer Rotationskolbenmaschine
2
Rotor einer Rotationskolbenmaschine
3
radiale Dichtleiste
3a, 3b
geteilte Dichtleiste 3
4
radiale Führungsnute für die Dichtleiste 3
5a, 5b
flexible federnde Dichtstreifen
6
führende Nute in der Dichtleiste 3
7
einseitige Abflachung der Dichtleiste 3
8
Bohrung für Arretierungsstifte 15a, 15b
9
Bohrung zur Aufnahme Spreizfeder 14
10
Bohrung zur Aufnahme der Andruckfedern 13a, 13b
11
Loch durch die Dichtstreifen 5a, 5b
12
Langloch durch die Dichtstreifen 5a, 5b
13a, 13b
Andruckfedern
14
Spreizfeder
15a, 15b
Arretierungsstift
It means in the pictures 1 to 6:
1
Housing of a rotary piston machine
2
Rotor of a rotary piston machine
3
radial sealing strip
3a, 3b
split sealing strip 3
4
radial guide groove for the sealing strip 3
5a, 5b
flexible resilient sealing strips
6
leading groove in the sealing strip 3
7
one-sided flattening of the sealing strip 3
8th
Bore for locking pins 15a, 15b
9
Bore for receiving spreading spring 14
10
Bore for receiving the pressure springs 13a, 13b
11
Hole through the sealing strips 5a, 5b
12
Long hole through the sealing strips 5a, 5b
13a, 13b
pressure springs
14
splay
15a, 15b
locking pin

Figur 1 zeigt die Rotationskolbenmaschine mit den erfindungsgemäß angeordneten Dichtleisten. Der Rotor 2 dreht sich im Gehäuse 1 entsprechend der Charakteristik einer Rotationskolbenmaschine mit einem Achsversatz. Die radialen Dichtleisten 3 sind in den radialen Führungsnuten 4 angeordnet. In den radialen Dichtleisten 3 sind an der radialen Außenkante die erfindungsgemäßen flexiblen federnden Dichtstreifen 5a, 5b paarweise eingefügt, so dass sie aus den Dichtleisten 3a, 3b herausragen, FIG. 1 shows the rotary piston machine with the invention arranged sealing strips. The rotor 2 rotates in the housing 1 according to the characteristic of a rotary piston machine with an axial offset. The radial sealing strips 3 are arranged in the radial guide grooves 4. In the radial sealing strips 3, the inventive flexible resilient sealing strips 5a, 5b are inserted in pairs at the radial outer edge, so that they project from the sealing strips 3a, 3b,

Der Aufbau einer geteilten Dichtleiste 3 ist aus den Figuren 2 und 3 ersichtlich. Eine Dichtleiste 3 ist so konstruiert, dass sie eine einseitige Abflachung 7 hat. Die Dichtleisten 3a, 3b werden paarweise mit ihren Abflachungen 7 aufeinander gelegt, so dass sie gemeinsam über die Breite des Rotors 2 reichen. In den Dichtleisten 3a, 3b befindet sich jeweils eine führende Nute 6 für die Aufnahme der flexiblen federnden Dichtstreifen 5a, 5b. weiterhin sind Bohrungen 8 für Arretierungsstifte 15a, 15b, Bohrungen 9 zur Aufnahme einer Spreizfeder 14 und Bohrungen 10 zur Aufnahme der Andruckfedern 13a, 13b vorgesehen.The structure of a split sealing strip 3 is from the FIGS. 2 and 3 seen. A sealing strip 3 is constructed so that it has a one-sided flattening 7. The sealing strips 3a, 3b are placed in pairs with their flattenings 7 on each other, so that they extend together across the width of the rotor 2. In the sealing strips 3a, 3b are each a leading groove 6 for receiving the flexible resilient sealing strips 5a, 5b. Furthermore, holes 8 for locking pins 15a, 15b, holes 9 for receiving a spreading spring 14 and holes 10 for receiving the pressure springs 13a, 13b are provided.

Figur 4 zeigt einen erfindungsgemäßen flexiblen Dichtstreifen 5a, 5b. Diese sind jeweils mit einem Loch 11 und einem Langloch 12 versehen. Die Länge der Dichtstreifen 5a, 5b entspricht der Breite des Rotors 2. FIG. 4 shows a flexible sealing strip 5a, 5b according to the invention. These are each provided with a hole 11 and a slot 12. The length of the sealing strips 5a, 5b corresponds to the width of the rotor 2.

Figur 5 zeigt eine Explosionszeichnung der Dichtleisten 3a, 3b mit den erfindungsgemäßen flexiblen Dichtstreifen 5a, 5b. Jeweils in einer Dichtleiste 3a, 3b wird ein Dichtstreifen 5 in der Art angeordnet, dass beim Zusammenfügen der zwei Dichtleisten 3a, 3b beide Dichtstreifen 5a, 5b paarweise gemeinsam über die gesamte Breite des Rotors 2 reichen. Die Dichtstreifen 5a, 5b werden durch die Arretierungsstifte 15a, 15b über Bohrungen 8 in der Dichtleiste gehalten. Dabei liegen wechselseitig ein Loch 11 und ein Langloch 12 der Dichtstreifen 5a, 5b gegenüber. In den Bohrungen 9 der Dichtleisten 3 ist eine Spreizfeder 14 angeordnet. FIG. 5 shows an exploded view of the sealing strips 3a, 3b with the flexible sealing strip 5a, 5b according to the invention. Each in a sealing strip 3a, 3b, a sealing strip 5 is arranged in such a way that when joining the two sealing strips 3a, 3b both sealing strips 5a, 5b in pairs extend together over the entire width of the rotor 2. The sealing strips 5a, 5b are held by the locking pins 15a, 15b through holes 8 in the sealing strip. Mutually a hole 11 and a slot 12 of the sealing strips 5a, 5b are opposite. In the holes 9 of the sealing strips 3, a spreading spring 14 is arranged.

Durch die Spreizfeder 14 werden die Dichtleisten 3a, 3b gegen die Seitenwände der Rotationskolbenmaschine gedrückt. In der durch die beiden Dichtleisten 3a, 3b führenden Nute 6 sind die Dichtstreifen 5a, 5b so angeordnet, dass jeder Dichtstreifen mit einem Arretierungsstift 15a, 15b in einer Dichtleiste 3a durch das Loch 11 befestigt ist und zugleich mit dem Langloch 12 in der jeweils gegenüberliegenden Dichtleiste 3b geführt und somit ein radiales Lösen des Dichtstreifens verhindert wird. Hierdurch ist es möglich, dass die Dichtstreifen 5a, 5b der axialen Spreizung der Dichtleisten 3a, 3b folgen können, die durch die Spreizfeder 14 bewirkt wird.By the spreading spring 14, the sealing strips 3a, 3b are pressed against the side walls of the rotary piston machine. In the groove 6 leading through the two sealing strips 3a, 3b, the sealing strips 5a, 5b are arranged such that each sealing strip is fastened with a locking pin 15a, 15b in a sealing strip 3a through the hole 11 and at the same time with the oblong hole 12 in the opposite one Led sealing strip 3b and thus a radial release of the sealing strip is prevented. This makes it possible that the sealing strips 5a, 5b of the axial spreading of the sealing strips 3a, 3b can follow, which is effected by the spreading spring 14.

Durch die Andruckfedern 13a, 13b sowie durch Fliehkräfte werden die Dichtleisten 3 radial nach außen gegen die Laufbahn des Gehäuses 1 gedrückt.By the pressure springs 13a, 13b and by centrifugal forces the sealing strips 3 are pressed radially outward against the raceway of the housing 1.

Figur 6 zeigt die zusammengesetzten Dichtleisten 3 mit den erfindungsgemäßen flexiblen Dichtstreifen 5a, 5b. Durch den Mediendruck in der Rotationskolbenmaschine rechts und links der Dichtleiste 3 werden die Dichtstreifen 5a, 5b zur Anlage an die Lauffläche gebracht und die Arbeitsräume werden geschlossen. FIG. 6 shows the composite sealing strips 3 with the flexible sealing strips 5a, 5b according to the invention. Due to the media pressure in the rotary piston machine right and left of the sealing strip 3, the sealing strips 5a, 5b brought to bear against the tread and the work spaces are closed.

Die Anordnung der Dichtstreifen 5a, 5b kann mehrfach erfolgen, so dass Pakete aus Dichtstreifen 5 gebildet werden können, in denen sich Dichtstreifen 5a, 5b gegenseitig überlappen und eine Abdichtung des Rotors 2 gegen das Gehäuse 1 bilden.The arrangement of the sealing strips 5a, 5b can be done several times, so that packages of sealing strips 5 can be formed, in which sealing strips 5a, 5b overlap each other and form a seal of the rotor 2 against the housing 1.

Bei der Montage des Rotors 2 in das Gehäuse 1 wird ein Teil des Dichtstreifenpakets in Drehrichtung des Rotors, ein anderer Teil entgegen der Drehrichtung so vorgebogen, dass sich die Dichtstreifen federnd gegen die Gehäuselaufbahn anlegen. Die Mediendrücke in den Arbeitszellen der Maschine bewirken, dass die Dichtstreifen 5 federnd über die Gehäuselaufbahn gleiten. Das gesamte Dichtstreifenpaket kann aber auch nur in Umfangsrichtung umgebogen werden.When mounting the rotor 2 in the housing 1, a part of the sealing strip packet in the direction of rotation of the rotor, another part against the direction of rotation is pre-bent so that the sealing strips create resiliently against the housing track. The media pressures in the working cells of the machine cause the sealing strips 5 to slide resiliently over the housing track. The entire sealing strip package can also be bent only in the circumferential direction.

Durch die Arretierungsstifte 15a, 15b sind die Dichtstreifen 5a, 5b mit den Dichtleisten 3a, 3b verbunden, so dass ein radialer Kräfteausgleich infolge der Mediendrücke an den Dichtleisten 3a, 3b und den an die Gehäuselaufbahn angedrückten Dichtstreifen 5a, 5b bewirkt wird.By the locking pins 15a, 15b, the sealing strips 5a, 5b are connected to the sealing strips 3a, 3b, so that a radial balance of forces due to the media pressures on the sealing strips 3a, 3b and pressed against the housing raceway sealing strip 5a, 5b is effected.

Claims (5)

Paarige Dichtleisten für Rotationskolbenmaschinen, welche quer geteilt sind, sich axial überlappen und sich an die Seitenwände der Rotationskolbenmaschine anpassen, dadurch gekennzeichnet, dass flexible federnde Dichtstreifen (5a, 5b) jeweils in die Dichtleisten (3a, 3b) an deren radialen Außenkanten so eingefügt sind, dass sie aus den Dichtleisten (3a, 3b) herausragen, wobei die Dichtstreifen (5a, 5b) paarweise gemeinsam über die gesamte Breite der Rotationskolbenmaschine reichen und dass die Dichtstreifen (5a, 5b) einer axialen Spreizung der Dichtleisten (3a, 3b) folgen.Paired sealing strips for rotary piston machines, which are divided transversely overlap axially and adapt to the side walls of the rotary piston machine, characterized in that flexible resilient sealing strips (5a, 5b) in each case in the sealing strips (3a, 3b) are inserted at the radial outer edges in that they protrude from the sealing strips (3a, 3b), wherein the sealing strips (5a, 5b) in pairs extend together over the entire width of the rotary piston machine and that the sealing strips (5a, 5b) follow an axial spreading of the sealing strips (3a, 3b) , Paarige Dichtleisten nach Anspruch 1 dadurch gekennzeichnet, dass die Dichtleisten (3a, 3b) für die Aufnahme der Dichtstreifen (5a, 5b) eine führende Nute (6) aufweisen und die Dichtstreifen (5a, 5b) darin durch Arretierungsstifte (15a, 15b) gehalten werden.Paired sealing strips according to claim 1, characterized in that the sealing strips (3a, 3b) for receiving the sealing strips (5a, 5b) have a leading groove (6) and the sealing strips (5a, 5b) held therein by locking pins (15a, 15b) become. Paarige Dichtleisten nach Anspruch 1 oder 2 dadurch gekennzeichnet, dass die Dichtstreifen (5a, 5b) mehrfach angeordnet sind, so dass Pakete aus Dichtstreifen (5) gebildet werden.Paired sealing strips according to claim 1 or 2, characterized in that the sealing strips (5a, 5b) are arranged several times, so that packages of sealing strips (5) are formed. Paarige Dichtleisten nach einem der Ansprüche 1 bis 3 dadurch
gekennzeichnet, dass
die aus den Dichtleisten (3a, 3b) herausragenden Dichtstreifen (5a, 5b) an der Gehäuselaufbahn in Umfangsrichtung umgebogen sind.Paired sealing strips according to one of claims 1 to 3 characterized
marked that
the sealing strips (5a, 5b) projecting from the sealing strips (3a, 3b) are bent over in the circumferential direction on the housing track. Paarige Dichtleisten nach einem der Ansprüche 1 bis 3 dadurch
gekennzeichnet, dass
die aus den Dichtleisten (3a, 3b) herausragenden Dichtstreifen (5a, 5b) an der Gehäuselaufbahn in beide Umfangsrichtungen umgebogen sind.Paired sealing strips according to one of claims 1 to 3 characterized
marked that
the sealing strips (5a, 5b) projecting from the sealing strips (3a, 3b) are bent over the housing track in both circumferential directions.
EP20120192497 2011-11-21 2012-11-14 Paired seal strips for rotary piston engines Withdrawn EP2597255A2 (en)

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Application Number Priority Date Filing Date Title
DE201110086691 DE102011086691B3 (en) 2011-11-21 2011-11-21 Paired sealing strips for rotary piston machines

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EP2597255A2 true EP2597255A2 (en) 2013-05-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014003591A1 (en) * 2014-03-04 2015-09-10 Gerd-Uwe Dahlmann Rotary internal combustion piston engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201403285D0 (en) 2014-02-25 2014-04-09 Curtis George S Rotary engine seals
CN105041384A (en) * 2014-07-21 2015-11-11 摩尔动力(北京)技术股份有限公司 End face sealing system

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE102006028807A1 (en) 2006-06-23 2007-12-27 Initiativkreis Druckzellenmotor E.V. Heat engine e.g. petrol engine, for e.g. commercial vehicle, has synchronized bucket wheels for obtaining spatial isochoric combustion in pressure cell, where initial value and inclination value of linear function are cleared
DE102006057003A1 (en) 2006-12-02 2008-06-05 GÜNTHER, Eggert Principle and system for sealing the piston of rotary piston engines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006028807A1 (en) 2006-06-23 2007-12-27 Initiativkreis Druckzellenmotor E.V. Heat engine e.g. petrol engine, for e.g. commercial vehicle, has synchronized bucket wheels for obtaining spatial isochoric combustion in pressure cell, where initial value and inclination value of linear function are cleared
DE102006057003A1 (en) 2006-12-02 2008-06-05 GÜNTHER, Eggert Principle and system for sealing the piston of rotary piston engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014003591A1 (en) * 2014-03-04 2015-09-10 Gerd-Uwe Dahlmann Rotary internal combustion piston engine
DE102014003591B4 (en) * 2014-03-04 2020-03-12 Gerd-Uwe Dahlmann Rotary piston internal combustion engine

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