EP2347098B1 - Seal for a rotary piston machine - Google Patents

Seal for a rotary piston machine Download PDF

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Publication number
EP2347098B1
EP2347098B1 EP09744913A EP09744913A EP2347098B1 EP 2347098 B1 EP2347098 B1 EP 2347098B1 EP 09744913 A EP09744913 A EP 09744913A EP 09744913 A EP09744913 A EP 09744913A EP 2347098 B1 EP2347098 B1 EP 2347098B1
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EP
European Patent Office
Prior art keywords
sealing
piston machine
rotary piston
rotary
machine according
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EP09744913A
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German (de)
French (fr)
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EP2347098A2 (en
Inventor
Manfred Fasswald
Karlheinz Langner
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Mahle Koenig GmbH and Co KG
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Mahle Koenig GmbH and Co KG
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Publication of EP2347098A2 publication Critical patent/EP2347098A2/en
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    • 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
    • F01C9/00—Oscillating-piston machines or engines
    • F01C9/002—Oscillating-piston machines or engines the piston oscillating around a fixed axis
    • 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

Definitions

  • the invention relates to a rotary piston machine according to the preamble of claim 1.
  • the seal between the vanes outer surfaces and the inner surface of the housing is of crucial importance, in that the lower the gap between the oscillating and rotating piston surfaces and the inner surface of the housing, the higher the efficiency the rotary piston machine can be recognized.
  • the invention thus relates to a rotary piston machine of the type mentioned, which has the features mentioned in the characterizing part of claim 1.
  • the depressions on the cylindrical peripheral surfaces of the rotary-wing pistons may also be aligned in an analogous manner with their diagonal or with the respective longer axis in the direction of the piston-wing movement, although experiments have shown that this does not have such a conspicuously positive effect on the cylindrical peripheral surfaces. as with the sealing moderately difficult to control flank surfaces of the rotary vane.
  • the sealing webs bordering each other on the one hand extend substantially in conformity with the two directions of movement of the rotary-wing pistons and, on the other hand, transversely, in particular vertically, are arranged to these directions, as the claim 6 can be seen.
  • the claim 7 indicates the preferred within the scope of the invention distances of the sealing webs from each other, in which case the distances between the center lines of each adjacent sealing webs are each meant here.
  • the claim 8 details regarding favorable widths of the network-like interconnected sealing webs can be seen.
  • the claim 9 calls for a high sealing effect favorable ratios of web width to mutual web spacing.
  • the claim 10 indicates the sealing effect of the lubrication / sealing network forming sealing webs effective sealing land heights.
  • the claim 11 is to be taken in the context of the invention, a particularly advantageous cross-sectional shape of the new lubrication / sealing network forming sealing webs.
  • claim 12 describes the sealant / lubricant mass preferably to be used for the sealing webs.
  • This is essentially a mass or mixture of powder graphite with a thermostable and thermosetting resin, which is applied to the surfaces to be coated, in particular imprinted, and cured there under heat treatment.
  • sealant / lubricant composition in the inventively provided arrangement in addition to the high sealing effect as a result of multiplied labyrinth seal effect has such a high lubricant quality that it can serve in the event of the occurrence of a lubricant shortage quite as emergency lubrication.
  • FIG. 1 a rotary piston machine according to the invention with the rotary-wing piston whose surface are coated with the lubricant / sealant network according to the invention
  • the Fig. 2 one of the blades of the rotary piston machine with the novelêtnbeetzung closer
  • the Fig. 3a to 3c Details of the new lubricant / sealant loading of the rotary vane.
  • the Fig. 1 shows a known rotary piston machine 100 with the inside of the housing 10 relative to each other oscillating rotatable rotary lobes 20, 30 and between them forming, during the power strokes variable size having working chambers eighth
  • the two cylindrical peripheral or outer surfaces 26, 36 of the rotary wing 20, 30 are each covered with a network 9 of the lubricant / bichtffenmasse DS, in which case the sealing webs 90 on the one hand in the direction of movement of the rotary vanes 20, 30 and on the other transversely, so here perpendicular, are arranged to the direction of the aforementioned movement.
  • Rhombenform Rh having depressions enclosing sealing webs 90 from the lubricant / sealant DS applied, wherein in the Fig. 1 the orientation of the local sealing webs 90 and the depressions 91 is not exactly recognizable.
  • Fig. 2 is - with otherwise constant reference numerals meaning - the orientation of the sealing webs 90 and of the same respectively enclosed wells 91 both on the cylindrical peripheral surfaces 26, 36 and on the two-sided flat flank surfaces 27, 37 of the rotary wing 20, 30 clearly visible.
  • the net-like intersecting sealing webs 90 are arranged in the same manner, as is apparent from the Fig. 1 is apparent.
  • the here approximately square depressions 91 are arranged between each of them enclosing sealing webs 90 so that a large number of diagonals of the squares are aligned substantially in the direction of the rotary vane movements.
  • Fig. 3a to 3c explain - with otherwise constant reference numerals - the occupation of one of the two flank surfaces 27, 37 of the rotary piston 20, 30 with the new adhesive lubricant / sealant 9 with the sealing webs 90, wherein the depressions 91 between the same rhombus Rh have and the smaller rhombus angle ⁇ 1 dividing longer axes a1 and diagonals of the rhombuses Rh are aligned in the direction of movement of the Drehkolberihoffls 20, 30, see in particular the Fig. 3c ,
  • the Fig. 3c shows the preferred, approximately trapezoidal cross-sectional shape of two of the sealing webs 90 with a limited depression 91, in which, for example, the lubricant, in particular lubricating oil, can collect and there is the height hs of the sealing webs 90 to see that advantageously 0.02 to 015 mm and its width bs, which is advantageously 0.5 to 1.5 mm. Arrows there is still the direction of the oscillating rotor movement of the rotary wing 20, 30 indicated.

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

Description

Die Erfindung betrifft eine Rotationskolbenmaschine gemäß dem Oberbegriff des Anspruchs 1. The invention relates to a rotary piston machine according to the preamble of claim 1.

Es ist seit langem bekannt, dass für die Laufeigenschaften von Kolbenmaschinen einerseits die Genauigkeit der Flächen von beweglichem Kolben und dem feststehenden Zylinder und eine möglichst geringe Dimension der Spalte zwischen Kolbenoberfläche und Zylinderwandung und andererseits ein möglichst gleichmäßiger und gleichmäßig gehaltener Schmierfilm andererseits von entscheidender Bedeutung sind.It has long been known that the accuracy of the surfaces of the movable piston and the fixed cylinder and the smallest possible dimension of the gap between piston surface and cylinder wall and on the other hand the most uniform and uniformly maintained lubricating film on the other hand are crucial for the operating characteristics of reciprocating engines.

Dies gilt in besonderem Maße für die Dichtung von Rotationskolbenmaschinen, bei welchen eine Dichtung sowohl zwischen den nicht beweglichen Zylinderinnenwandungsflächen und den bewegten, üblicherweise zylindrischen Außenflächen der Drehflügelkolben als auch zwischen den nicht bewegten, beidseitig seitlichen, üblicherweise ebenen, Innenwandungen des Gehäuses und den beiden einander gegenüberliegenden mit den Drehflügelkolben beweglichen Flankenflächen derselben erforderlich ist.This is particularly true for the seal of rotary piston engines, in which a seal both between the non-movable Zylinderinnenwandungsflächen and the moving, usually cylindrical outer surfaces of the rotary wing piston and between the non-moving, both sides, usually flat, inner walls of the housing and the two each other opposite to the rotary vane piston movable flank surfaces thereof is required.

Gerade bei Rotationskolbenmaschinen, z.B. vom Typ der Stirling-Motoren, ist die Dichtung zwischen den Drehflügelkolben-Außenflächen und der Gehäuse-Innenfläche insofern von entscheidender Bedeutung, als grundsätzlich gilt, dass, je geringer der Spalt zwischen oszillierenden und rotierenden Kolbenoberfläche und Gehäuse-Innenwandungsfläche ist, desto höher der Wirkungsgrad der Rotationskolbenmaschine angesetzt werden kann.Especially with rotary piston engines, e.g. of the type of Stirling engines, the seal between the vanes outer surfaces and the inner surface of the housing is of crucial importance, in that the lower the gap between the oscillating and rotating piston surfaces and the inner surface of the housing, the higher the efficiency the rotary piston machine can be recognized.

Dies ist verständlicherweise bei Rotationskolbenmaschinen nach Art von Stirling-Motoren, wo vier derartige, jeweils paarweise gegeneinander bewegliche Drehflügel vorliegen, ganz besonders wichtig.This is understandably in rotary piston machines in the manner of Stirling engines, where four such, in pairs against each other movable rotary blades are present, very important.

Es wurde gefunden, siehe z.B dokument US 3071314 , dass eine Großzahl von ganz eng aneinanderliegenden spaltartigen Stellen und zwischen denselben angeordneten, gering sich erweiternden Stellen, durch welche letztendlich jegliche Leckage des Arbeitsmittels, wie z.B. Heißluft oder Dampf, ausgeschlossen ist, diese Forderung im hohem Maße zu erfüllen imstande sind.It was found, see eg document US 3,071,314 in that a large number of very close gap-shaped places and between them arranged, slightly flared places, by which ultimately any leakage of the working medium, such as hot air or steam, is excluded to meet this requirement to a high degree.

Gegenstand der Erfindung ist somit eine Rotationskolbenmaschine der eingangs genannten Art, welche die im Kennzeichen des Anspruches 1 genannten Merkmale aufweist.The invention thus relates to a rotary piston machine of the type mentioned, which has the features mentioned in the characterizing part of claim 1.

Bei dieser Art von Maschinen handelt es sich um eine sich beim Aneinandergleiten der beweglichen Kolbenflächen auf den feststehenden Innenflächen des Gehäuses nicht von ihrem Platz verschiebliche, in ihrer Anordnung bzw. in ihrem Auftrag unveränderlich bleibende, formstabile Grafit-Schmiermittel/Bindemittelmasse, welche auf die vorher mechanisch und mittels Lösungsmittel gereinigten Oberflächen der Drehflügelkolben der Rotationskolbenmaschine, vorzugsweise mittels Siebdruckverfahrens, aufgebracht ist und sich dort oberflächenchemisch und -technisch mit dem Material der Drehflügelkolben verbindet. Die Dicht- und Schmiermittel-/Bindemittelmasse ist in geringfügigem Maße etwas nachgiebig und ist somit imstande, unvermeidbare Unregelmäßigkeiten in den aneinandergleitenden Flächen und in der Dicke der Spalte zwischen den beweglichen und den feststehenden Oberflächen der Maschine auszugleichen.In this type of machinery is a non-displaceable when sliding the movable piston surfaces on the fixed inner surfaces of the housing from its place, in their arrangement or in their order permanent, rigid graphite lubricant / binder mass, which on the previously mechanically and by means of solvent cleaned surfaces of the rotary vane piston of the rotary piston machine, preferably by means of screen printing process, is applied and there combines surface chemical and technical with the material of the rotary vane. The sealant and grease / binder mass is slightly compliant and thus able to compensate for unavoidable irregularities in the sliding surfaces and in the thickness of the gaps between the moving and stationary surfaces of the machine.

Da die auf die Außenfläche der Drehflügelkolben aufgebrachte handelsübliche, Grafit enthaltende, mechanisch hochfeste und abriebbeständige Masse neben der Gewährleistung extrem enger Spalte zwischen den bewegten Kolbenflächen und den Zylinderwandungen zusätzlich hochwirksame Vielfach-Labyrinthcharakteristik in Folge einer Vielzahl von letztlich kontinuierlich die kleinen Einsenkungen bzw. Senken rundum umgebenden, ein Netzwerk bildenden, sich kreuzenden Dicht-Stegen zur Verfügung stellen, gleichzeitig durchaus Schmiermittel-Eigenschaften aufweist, ist sie für die angestrebte hochwirksame Spaltdicken-Minimierung in Rotationskolbenmaschinen hervorragend geeignet.As applied to the outer surface of the rotary vane piston commercially available, graphite-containing, mechanically high-strength and abrasion-resistant mass in addition to ensuring extremely narrow gaps between the moving piston surfaces and the cylinder walls additionally highly effective multiple labyrinth characteristic as a result of a variety of ultimately continuously small depressions or depressions all around surrounding, forming a network, intersecting sealing webs available, at the same time has quite lubricant properties, it is ideally suited for the desired highly effective gap thickness minimization in rotary piston machines.

Was nun das Design, also die Anordnung der einander kreuzenden Dicht-Stege mit den dazwischen angeordneten und von denselben umgebenen Senken betrifft, so sind dem- bzw. derselben an sich von vornherein grundsätzlich keine Grenzen gesetzt, so lange eine Vielzahl von durch die Dicht-Stege eingegrenzten einzelnen Senken vorhanden ist.As regards the design, ie the arrangement of the intersecting sealing webs with the depressions arranged therebetween and surrounded by the same, there are basically no limits to the same from the start, as long as a large number Webs bounded individual sinks is present.

Allerdings hat sich gezeigt, dass die Dichtwirkung erhöht ist, wenn die Dicht-Stege untereinander gleiche Breite aufweisen und wenn die Senken alle praktisch gleiche Gestalt und Flächenausdehnung aufweisen, wobei sich die im Anspruch 2 genannten Formen als besonders vorteilhaft erwiesen haben.However, it has been shown that the sealing effect is increased when the sealing webs have the same width to each other and when the wells have virtually the same shape and surface area, with the forms mentioned in claim 2 have proved to be particularly advantageous.

Als besonders günstig im Sinne einer hohen Dicht- und Schmierwirkung haben sich quadratische oder rhombenartige Formen der Dicht-Steg-Anordnung bzw. der Senken zwischen denselben erwiesen.As particularly favorable in terms of a high sealing and lubricating effect have square or rhombenartige forms of the sealing-web arrangement or the sinks between the same proven.

Wenn auch an sich von Dicht-Stegen rundum umgebene Senken mit Anordnungs-Formen, z.B. nach Art der Anordnung von Ziegeln im Holländischen Verband in Frage kommen, so hat es sich gezeigt, dass einander kreuzende Stege, wie sie insbesondere bei Dreiecks-, Quadrat- oder Rhombusform der Senken vorhanden sind, von Vorteil sind, da die Kreuzungsbereiche von jeweils vier oder sechs Stegen offenbar zusätzlich stabilisierende Wirkung ausüben dürften.While per se, wells surrounded by sealing lands are provided with locating shapes, e.g. According to the type of arrangement of bricks in the Dutch Association come into question, it has been shown that intersecting webs, as they are in particular in triangular, square or rhomboidal shape of the valleys, are advantageous because the crossing areas of four or six bars seem to exert additional stabilizing effect.

Für die Absenkung des Reibungswiderstandes zwischen den bewegten Oberflächen der Drehflügelkolben und den feststehenden Gehäuse-Innenwandungen als günstig hat sich herausgestellt, wenn zumindest an den üblicherweise ebenen Seitenflankenflächen der Kolbenflügel eine Ausrichtung der zwischen den Dichtstegen angeordneten Senken mit quadratischer oder rhombischer Form gemäß den Angaben im Anspruch 4 vorgesehen ist.For the reduction of the frictional resistance between the moving surfaces of the rotary vane and the fixed housing inner walls as low has been found, if at least at the usually flat Side flank surfaces of the piston wings an orientation of the arranged between the sealing webs sinks with square or rhombic shape according to the information provided in claim 4 is provided.

Selbstverständlich können auch die Senken auf den zylindrischen PeripherFlächen der Drehflügelkolben in analoger Weise mit ihrer Diagonale oder mit der jeweils längeren Achse in Richtung der Kolbenflügel-Bewegung ausgerichtet sein, allerdings haben Versuche gezeigt, dass dies auf den zylindrischen Peripherflächen nicht so auffallend positive Wirkung hat, wie bei den dichtungsmäßig schwieriger zu beherrschenden Flankenflächen der Drehflügelkolben.Of course, the depressions on the cylindrical peripheral surfaces of the rotary-wing pistons may also be aligned in an analogous manner with their diagonal or with the respective longer axis in the direction of the piston-wing movement, although experiments have shown that this does not have such a conspicuously positive effect on the cylindrical peripheral surfaces. as with the sealing moderately difficult to control flank surfaces of the rotary vane.

Was die Winkel, der in der beschriebenen Weise ausgerichtete Rhombus- bzw. Rhomboidform aufweisenden Senken betrifft, so gibt darüber der Anspruch 5 näher Auskunft.With regard to the angles of the depressions having rhomboidal or rhomboidal shapes in the described manner, claim 5 gives more details.

Aufgrund der Kenntnis dieser Tatsache ist es beispielsweise für die PeripherFlächen der Drehflügelkolben möglich, dass insbesondere bei Senken mit Quadratform die die Senken rundum begrenzenden, einander kreuzenden Dicht-Stege einerseits mit den beiden Bewegungsrichtungen der Drehflügelkolben im Wesentlichen konform verlaufen und andererseits quer, insbesondere senkrecht, zu diesen Richtungen angeordnet sind, wie dem Anspruch 6 zu entnehmen ist.On the basis of the knowledge of this fact, it is possible, for example, for the peripheral surfaces of the rotary-wing pistons, in particular in the case of countersinks having a square shape, the sealing webs bordering each other on the one hand extend substantially in conformity with the two directions of movement of the rotary-wing pistons and, on the other hand, transversely, in particular vertically, are arranged to these directions, as the claim 6 can be seen.

Der Anspruch 7 gibt die im Rahmen der Erfindung zu bevorzugenden Abstände der Dicht-Stege voneinander an, wobei hier jeweils die Abstände der Mittellinien von jeweils einander benachbarten Dicht-Stegen voneinander gemeint sind.The claim 7 indicates the preferred within the scope of the invention distances of the sealing webs from each other, in which case the distances between the center lines of each adjacent sealing webs are each meant here.

Dem Anspruch 8 sind Angaben bezüglich günstiger Breiten der netzartig miteinander verbundenen Dicht-Stege zu entnehmen.The claim 8 details regarding favorable widths of the network-like interconnected sealing webs can be seen.

Der Anspruch 9 nennt für eine hohe Dichtwirkung günstige Verhältnisse von Stegbreite zu gegenseitigem Stegabstand.The claim 9 calls for a high sealing effect favorable ratios of web width to mutual web spacing.

Der Anspruch 10 gibt für die Dichtwirkung der das Schmierungs/Dichtungs-Netz bildenden Dicht-Stege wirksame Dichtsteg-Höhen an.The claim 10 indicates the sealing effect of the lubrication / sealing network forming sealing webs effective sealing land heights.

Dem Anspruch 11 ist eine im Sinne der Erfindung besonders günstige Querschnittsgestalt der das neue Schmierungs/Dichtungs-Netz bildenden Dichtstege zu entnehmen.The claim 11 is to be taken in the context of the invention, a particularly advantageous cross-sectional shape of the new lubrication / sealing network forming sealing webs.

Schließlich beschreibt der Anspruch 12 die für die Dicht-Stege bevorzugt zu verwendende Dichtmittel/Schmiermittelmasse. Diese ist im Wesentlichen eine Masse bzw. Mischung aus Pudergrafit mit einem thermostabilen und thermisch aushärtbaren Harz, welche auf die zu beschichtenden Flächen aufgetragen, insbesondere aufgedruckt, und dort unter Wärmebehandlung ausgehärtet wird.Finally, claim 12 describes the sealant / lubricant mass preferably to be used for the sealing webs. This is essentially a mass or mixture of powder graphite with a thermostable and thermosetting resin, which is applied to the surfaces to be coated, in particular imprinted, and cured there under heat treatment.

Es sei an dieser Stelle betont, dass die Dichtmittel/Schmiermittelmasse in der erfindungsgemäß vorgesehenen Anordnung neben der hohen Dichtwirkung in Folge des vervielfachten Labyrinthdichtungs-Effektes eine derart hohe Schmiermittelqualität aufweist, dass sie im Falle des Auftretens eines Schmiermittel-Mangels durchaus als Notlaufschmiermittel dienen kann.It should be emphasized at this point that the sealant / lubricant composition in the inventively provided arrangement in addition to the high sealing effect as a result of multiplied labyrinth seal effect has such a high lubricant quality that it can serve in the event of the occurrence of a lubricant shortage quite as emergency lubrication.

Anhand der Zeichnung wird die Erfindung näher erläutert:Reference to the drawing, the invention is explained in more detail:

Es zeigen die Fig. 1 eine erfindungsgemäße Rotationskolbenmaschine mit den Drehflügelkolben, deren Oberfläche mit dem erfindungsgemäßen Schmiermittel/Dichtmittelnetz überzogen sind, die Fig. 2 einen der Flügel der Rotationskolbenmaschine mit der neuartigen Flächenbeaufschlagung näher und die Fig. 3a bis 3c Details der neuen Schmiermittel/Dichtmittelbeaufschlagung der Drehflügelkolben.It show the Fig. 1 a rotary piston machine according to the invention with the rotary-wing piston whose surface are coated with the lubricant / sealant network according to the invention, the Fig. 2 one of the blades of the rotary piston machine with the novel Flächenbeaufschlagung closer and the Fig. 3a to 3c Details of the new lubricant / sealant loading of the rotary vane.

Die Fig. 1 zeigt eine an sich bekannte Rotationskolbenmaschine 100 mit den im Inneren von deren Gehäuse 10 relativ zueinander oszillierend drehbaren Drehkolbenflügeln 20, 30 und den zwischen denselben sich ausbildenden, während der Arbeitstakte variierbare Größe aufweisenden Arbeitskammern 8.The Fig. 1 shows a known rotary piston machine 100 with the inside of the housing 10 relative to each other oscillating rotatable rotary lobes 20, 30 and between them forming, during the power strokes variable size having working chambers eighth

Die beiden zylindrischen Peripher- bzw. Außenflächen 26, 36 der Drehkolbenflügel 20, 30 sind jeweils mit einem Netz 9 aus der Schmiermittel/bichtmittelmasse DS belegt, wobei hier die Dicht-Stege 90 einerseits in Richtung der Bewegung der Drehflügelkolben 20, 30 und andererseits mit quer, also hier senkrecht, zu der Richtung der eben genannten Bewegung angeordnet sind.The two cylindrical peripheral or outer surfaces 26, 36 of the rotary wing 20, 30 are each covered with a network 9 of the lubricant / bichtmittelmasse DS, in which case the sealing webs 90 on the one hand in the direction of movement of the rotary vanes 20, 30 and on the other transversely, so here perpendicular, are arranged to the direction of the aforementioned movement.

Die beiden Seiten Rhombenform Rh aufweisende Senken umschließenden Dicht-Stegen 90 aus der Schmiermittel/Dichtmittelmasse DS beaufschlagt, wobei in der Fig. 1 die Ausrichtung der dortigen Dicht-Stege 90 und der Senken 91 nicht genau erkennbar ist.The two sides Rhombenform Rh having depressions enclosing sealing webs 90 from the lubricant / sealant DS applied, wherein in the Fig. 1 the orientation of the local sealing webs 90 and the depressions 91 is not exactly recognizable.

Aus der Fig. 2 ist - bei sonst gleichbleibenden Bezugszeichenbedeutungen - die Ausrichtung der Dicht-Stege 90 und der von denselben jeweils umschlossenen Senken 91 sowohl auf den zylindrischen Peripherflächen 26, 36 als auch auf den beidseitigen ebenen Flankenflächen 27, 37 der Drehkolbenflügel 20, 30 deutlich erkennbar.From the Fig. 2 is - with otherwise constant reference numerals meaning - the orientation of the sealing webs 90 and of the same respectively enclosed wells 91 both on the cylindrical peripheral surfaces 26, 36 and on the two-sided flat flank surfaces 27, 37 of the rotary wing 20, 30 clearly visible.

Auf den zylindrischen Peripherflächen 26, 36 sind die einander netzartig kreuzenden Dicht-Stege 90 in gleicher Weise angeordnet, wie dies aus der Fig. 1 ersichtlich ist.On the cylindrical peripheral surfaces 26, 36, the net-like intersecting sealing webs 90 are arranged in the same manner, as is apparent from the Fig. 1 is apparent.

Auf den beiden ebenen Flankenflächen 27, 37 sind die hier etwa quadratischen Senken 91 zwischen den jede derselben umschließenden Dicht-Stegen 90 so angeordnet, dass eine große Zahl von Diagonalen der Quadrate im Wesentlichen in Richtung der Drehflügelkolben-Bewegungen ausgerichtet sind.On the two flat flank surfaces 27, 37, the here approximately square depressions 91 are arranged between each of them enclosing sealing webs 90 so that a large number of diagonals of the squares are aligned substantially in the direction of the rotary vane movements.

Die Fig. 3a bis 3c erläutern - bei sonst gleichbleibenden Bezugszeichenbedeutungen - die Belegung einer der beiden Flankenflächen 27, 37 der Drehflügelkolben 20, 30 mit dem neuen festhaftenden Schmiermittel/Dichtmittelnetz 9 mit den Dicht-Stegen 90, wobei die Senken 91 zwischen denselben Rhombusgestalt Rh aufweisen und die die kleineren Rhombus-Winkel α1 teilenden längeren Achsen a1 bzw. Diagonalen der Rhomben Rh in Richtung der Bewegung des Drehkolberiflügels 20, 30 ausgerichtet sind, siehe hierzu insbesondere die Fig. 3c.The Fig. 3a to 3c explain - with otherwise constant reference numerals - the occupation of one of the two flank surfaces 27, 37 of the rotary piston 20, 30 with the new adhesive lubricant / sealant 9 with the sealing webs 90, wherein the depressions 91 between the same rhombus Rh have and the smaller rhombus angle α1 dividing longer axes a1 and diagonals of the rhombuses Rh are aligned in the direction of movement of the Drehkolberiflügels 20, 30, see in particular the Fig. 3c ,

Die Fig. 3c zeigt die bevorzugte, etwa trapezoide Querschnittsgestalt zweier der Dicht-Stege 90 mit einer von ihnen begrenzten Senke 91, in der sich z.B. das Schmiermittel, insbesondere Schmieröl, sammeln kann und es ist dort die Höhe hs der Dicht-Stege 90 zu ersehen, die vorteilhafterweise 0,02 bis 015 mm beträgt und ihre Breite bs, die vorteilhafterweise 0,5 bis 1,5 mm beträgt. Mit Pfeilen ist dort noch die Richtung der oszillierend rotorischen Bewegung der Drehkolbenflügel 20, 30 angedeutet.The Fig. 3c shows the preferred, approximately trapezoidal cross-sectional shape of two of the sealing webs 90 with a limited depression 91, in which, for example, the lubricant, in particular lubricating oil, can collect and there is the height hs of the sealing webs 90 to see that advantageously 0.02 to 015 mm and its width bs, which is advantageously 0.5 to 1.5 mm. Arrows there is still the direction of the oscillating rotor movement of the rotary wing 20, 30 indicated.

Claims (12)

  1. A rotary piston machine (100), particularly a blade-type piston machine, having two pistons with circular-segment- or two blade-type pistons (2, 3), providing a sealing against the concave interior surfaces and the two terminal interior surfaces of the operational housing, each having at least two piston blades (20, 30), the two pistons being mounted on axle shafts (21, 31) which are fit into one another coaxially, so that they can be displaced by rotary movements in relation to one another, and being displaced in relation to one another in rotary oscillatory movements in operation, at the same time rotating in the same direction, a plurality of, particularly at least four, operational chambers (23) with variable volumes being formed between each two radial interfaces (28, 38) of the piston blades (20, 30) of two different circular-segment-type pistons (2, 3) and each of the two axle shafts (21, 31) which are coaxially and rotatably fit into one another being connected to a gear outside the operational housing,
    characterized in that
    a net-type gap seal coating (9) consisting of a stationary, uniformly structured mass of sealing/lubricating agents (DS) containing graphite and having a high mechanical and tribological stability is applied to the cylindrically curved peripheral surfaces (26, 36) of the blade-type pistons (20, 30) and on the preferably even flank surfaces (27, 37) on their two sides, said mass of sealing/lubricating agents (DS) being formed by a sealing/lubricating net (9) which is applied to the above mentioned highly pure and highly degreased surfaces (26, 36, 27, 37) of the blade-type pistons (20, 30) and consists of sealing ridges (???) (90) of said mass of sealing/lubricating agents (DS) which extend in elliptical forms on the cylindrical peripheral surfaces and in straight forms on the even flank surfaces, cross one another, and are raised in relation to the above mentioned surfaces (26, 36, 27, 37), and of hollows or recesses (91) which are arranged between said raised sealing ridges (90) and extend essentially to the above mentioned uncoated surfaces (26, 36; 27, 37) of the blade-type pistons (20, 30).
  2. The rotary piston machine according to claim 1, characterized in that said raised sealing ridges (90) forming said sealing/lubricating net (9) surround a high number of same-sized triangular, tetragonal or hexagonal recesses (91).
  3. The rotary piston machine according to claim 1 or claim 2, characterized in that said recesses (91) between said sealing ridges (90) consisting of said mass of sealing/lubricating agents (DS) on the flank surfaces (27, 37) and the cylindrical peripheral surfaces are essentially rhomboid- (Rh) or square-shaped (Q).
  4. The rotary piston machine according to any one of the claims 1 to 3, characterized in that said recesses (91) between said sealing ridges (90) consisting of said mass of sealing/lubricating agents (DS) are rhomboid-shaped (Rh), the diagonals of the square-shaped (Qu) recesses (91) and the longer axes (a1) of the rhomboid-shaped (Rh) recesses (91) at least on the peripheral surfaces (26, 36) being essentially oriented in the direction of the oscillating and rotary movement of the blade-type pistons (20, 30), when said rotary piston machine (100) is operated.
  5. The rotary piston machine according to any one of the claims 2 to 4, characterized in that the corner angles (α1) divided by the longer axes (a1) of the rhomboid-shaped (Rh) recesses (91) are in the range of 15 to 85°, preferably of 30 to 75°, and particularly of 40 to 50°.
  6. The rotary piston machine according to any one of the claims 2 to 5, characterized in that each of the lateral edges of the square-shaped (Qu) recesses (91) between the sealing ridges (90) and, thus, the sealing ridges (90) consisting of the mass of lubricating/sealing agents (DS) applied onto the cylindrical peripheral surfaces (26, 36) of the blade-type pistons (20, 30) is essentially oriented in the direction of the oscillating and rotary movement of the rotary pistons.
  7. The rotary piston machine according to any one of the claims 1 to 6, characterized in that the distance (as) between the center lines (ml) of adjacent sealing ridges (90) constantly amounts to 2 to 3.5 mm, particularly to approx. 3 mm.
  8. The rotary piston machine according to any one of the claims 1 to 7, characterized in that the sealing ridges (90) of the sealing/lubricating net (9) on the surfaces (26, 36; 27, 37) of the blade-type pistons (20, 30) preferably have the same constant width (bs) of 0.03 to 3.5 mm.
  9. The rotary piston machine according to any one of the claims 1 to 8, characterized in that the relation of the distance (as) between the center lines (ml) of two adjacent sealing ridges (9) to the width (bs) of the sealing ridges (90) ranges from 120:1 to 1.2:1, particularly from 2:1 to 1.2:1.
  10. The rotary piston machine according to any one of the claims 1 to 9, characterized in that the sealing ridges (90) of the sealing/lubricating net (9) on the surfaces (26, 36; 27, 37) of the blade-type pistons (20, 30) are raised in relation to these surfaces forming a relief which is 0.01 to 0.5 mm, preferably 0.02 to 0.15 mm, high.
  11. The rotary piston machine according to any one of the claims 1 to 10, characterized in that the sealing ridges (90) of the sealing/lubricating net (9) on the surfaces (26, 36; 27, 37) of the blade-type pistons (20. 30) each have a trapezoid cross-section with rounded top corners.
  12. The rotary piston machine according to any one of the claims 1 to 11, characterized in that the sealing/lubricating net (9) is formed by a compound of graphite and a binding or bonding agent.
EP09744913A 2008-10-17 2009-10-16 Seal for a rotary piston machine Not-in-force EP2347098B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT16372008A AT507476B1 (en) 2008-10-17 2008-10-17 SEAL FOR CIRCULAR PISTON MACHINES
PCT/AT2009/000404 WO2010042967A2 (en) 2008-10-17 2009-10-16 Seal for a rotary piston machine

Publications (2)

Publication Number Publication Date
EP2347098A2 EP2347098A2 (en) 2011-07-27
EP2347098B1 true EP2347098B1 (en) 2012-12-26

Family

ID=42106951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09744913A Not-in-force EP2347098B1 (en) 2008-10-17 2009-10-16 Seal for a rotary piston machine

Country Status (3)

Country Link
EP (1) EP2347098B1 (en)
AT (1) AT507476B1 (en)
WO (1) WO2010042967A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018125624A1 (en) * 2018-10-16 2020-04-16 FreeFreeze GmbH Rotary piston machine and method for producing a seal in a rotary piston machine
CN113788612B (en) * 2021-09-03 2023-03-07 武汉睿芯特种光纤有限责任公司 Optical fiber perform sealing device and wire drawing stove

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071314A (en) * 1959-11-12 1963-01-01 Fairchild Stratos Corp Screw compressor seal
ZA776719B (en) * 1977-11-10 1979-04-25 Griffenthal Pty Ltd Rotary engine
DE2952240A1 (en) * 1979-12-22 1981-07-02 Rolf Prof. Dr.-Ing. 5650 Solingen Seybold Rotor end face seal - comprises three or more adjacent hemispherical bodies in direction of pressure drop
WO1990001676A1 (en) * 1988-08-14 1990-02-22 Kkm Kreis-Kolben-Motoren Gmbh Planetary piston internal combustion engine
US5133317A (en) * 1991-06-10 1992-07-28 Masami Sakita Rotary piston engine
US5554020A (en) * 1994-10-07 1996-09-10 Ford Motor Company Solid lubricant coating for fluid pump or compressor
US20030126733A1 (en) * 2002-01-07 2003-07-10 Bush James W. Method to rough size coated components for easy assembly
WO2004088141A2 (en) * 2003-04-02 2004-10-14 Gebr. Becker Gmbh & Co. Kg Oscillating piston pump

Also Published As

Publication number Publication date
WO2010042967A2 (en) 2010-04-22
EP2347098A2 (en) 2011-07-27
AT507476A1 (en) 2010-05-15
AT507476B1 (en) 2012-11-15
WO2010042967A3 (en) 2010-08-12

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