EP2100009A1 - System for sealing the piston of rotary piston machines - Google Patents

System for sealing the piston of rotary piston machines

Info

Publication number
EP2100009A1
EP2100009A1 EP07822696A EP07822696A EP2100009A1 EP 2100009 A1 EP2100009 A1 EP 2100009A1 EP 07822696 A EP07822696 A EP 07822696A EP 07822696 A EP07822696 A EP 07822696A EP 2100009 A1 EP2100009 A1 EP 2100009A1
Authority
EP
European Patent Office
Prior art keywords
rotor
sealing
rotary piston
discs
sealing system
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.)
Granted
Application number
EP07822696A
Other languages
German (de)
French (fr)
Other versions
EP2100009B1 (en
Inventor
Eggert 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
Guenther Eggert
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 Guenther Eggert filed Critical Guenther Eggert
Priority to EP11179629.8A priority Critical patent/EP2450530B1/en
Publication of EP2100009A1 publication Critical patent/EP2100009A1/en
Application granted granted Critical
Publication of EP2100009B1 publication Critical patent/EP2100009B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 principle and system for sealing rotary piston against the surrounding housing wall of rotary compression and -Expansionsmaschinen.
  • Wankel an engine type the only two relatively moving, the work space enclosing components comprising: a housing with a trochoidenförmigen career and also derived from a Trochoide rotary piston as the inner envelope body of the housing track.
  • a housing with a trochoidenförmigen career and also derived from a Trochoide rotary piston as the inner envelope body of the housing track.
  • On this piston can be arranged sealing strips that meet the condition of the unchanged geometric shape.
  • Wankel engine has become known as Wankel engine. Despite the merits and successful development of this engine type, some technical goals could not be achieved. This concerns the geometric volume change with the used trochoid, which does not allow the implementation of a conventional diesel process. This also applies, less drastic, the lubrication of the sealing strips and related to the heat dissipation from the piston to the housing wall.
  • the object is to provide a sealing system for rotary piston machines, which applies the principle of the same geometric shape of the sealing line according to F. Wankel so that other types of rotary piston machines for expansion and compression processes in higher temperature ranges as well can be realized with improved volume change, lubrication and heat dissipation characteristics.
  • the rotor consists of two or more parallel rotor disc segments, of which the outer, facing the frontal housing walls discs are pressed by spring and / or gas forces on the housing wall, that they there abut sealingly with its surface and a flow around is not possible and in that the sealing of the resulting between the rotor segment discs 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 resiliently that a system of continuous planar sealing lines results, which no longer has interruptions.
  • the inventive solution further consists in that the sealing strips are formed by packages of movable mold plates, which form labyrinth seals with itself and together with the rotor disk segments and in that the disk packs by means of spring and / or media forces to the geometric Variations of the rotary piston machine, which occur in the movement or by pressures and temperatures can adapt.
  • the inventive solution consists in the fact that the sealing strips, which bear against the circumference of the housing track, consist of mold blades that overlap each other so that they form sealing edges that extend flexible in the rotor movement in the corner regions of the housing and seal them and in that these form blades by spring forces the radial and axial changes in the housing to adjust.
  • the inventive solution consists in the fact that the form of slats have skewed edges, so that wedge-shaped pressure elements can act by spring force on the beveled edges, that the slats can be moved in both directions of a plane against each other and thus form the packets of mold blades sealing elements, which can adapt to the room in which they are arranged in two directions.
  • the disk segments, of which the rotor is composed, on the mutually facing sides on radial grooves are fitted into the packets of mold blades, so that the joints between the disk segments are sealed by flexible labyrinth seals.
  • the disk segments on the mutually facing sides around the rotor axis around annular grooves in which either a closed ring can be used and seals the rotor to the axis or a disc segment has an annular recess which fits into the opposite annular groove of the counter-disc and the Rotor seals towards axis.
  • rotor disks which form the piston, on their outer surfaces recesses between the piston tips have such that at these recesses media forces can attack, which are directed against the forces acting in the joints media forces and so reduce the resulting pressure forces against the housing wall to the extent that ensures the tightness, but minimizes the frictional forces.
  • the inventive solution also includes that the disc segments are designed so that they form a labyrinth seal even as a form of lamella in conjunction with other form of slats.
  • FIG. 1 Principle of the adaptable sealing line on the vane-cell rotor
  • Figure 3a split Wankel rotor 28, 29 rotor segment
  • FIG. 3c. 3d sealing group
  • Figure 1 The principle of the seal is described with reference to Figure 1.
  • the rotor of the machine is separated into the two segment discs 1 and 2, which are pressed with their outer surfaces 6 and 8 by spring / media forces on the front sides of the housing and thus seal the rotor against the housing.
  • the gap 11 between the segment discs is closed inwardly towards the rotor shaft by a peripheral cover 10.
  • the guide grooves 5 With the cover 10, the guide grooves 5 are connected, in which wing parts 3, 4 sit, which form a wing of the vane cell rotor.
  • the wings 3, 4 are formed by form of slats, which can adapt to the geometric changes.
  • Figure 2a The rotor of the vane cell rotor consists of the disk segments 12 and 13, which are pressed apart by springs 14 and thus sealingly abut against the end faces of the housing.
  • the springs are located in the (non-continuous) holes 15 in both segment discs.
  • the segmental disc 12 engages with the hub 17 in the receptacle 16 of the segment disc 13 and closes the parting line 19, corresponding to the cover 10 according to Figure 1.
  • the slots 18 in the segment discs 12 and 13 speak the guide grooves 5 according to Figure 1.
  • Figure 2b In the slots 18 of the rotor are the wing cassettes 20, which adapt due to their internal spring forces in the radial direction of the housing track and in the axial direction of the front sides of the housing and at the same time in the corners between the two treads extend the housing and seal it.
  • the two identical half-wings 21 and 22 which are stacked so that they can be moved against each other and thus come to the front sides of the housing as a seal to the plant. In this position they form with the disc segments 12 and 13 continuous sealing surfaces against the passage of the medium.
  • the pressure force of the half-wings 21 and 22 for this system is achieved by the inner beveled edges 23 and the pressure wedge 24 resting on the compression spring 25.
  • the pressure wedge 24 is located in the inner space formed by the half-wings 21 and 22.
  • the compression spring 25 is supported against the bottom of the cassette shell 27.
  • the radial sealing movement of the half-wings 21 and 22 in the rotation of the rotor is additionally achieved by the springs 26.
  • Figure 2c shows the nested disk segments 12 and 13 with a wing cassette 20 in the slot 18 in the rotor.
  • FIG. 1 Another embodiment of the principle of sealing a rotary piston show the pictures 3a, 3b, 3c and 3d for the rotor of a Wankelmaschine.
  • FIG. 3a The rotor for a Wankelmaschine consists of the two identical rotor segments 28 and 29. In the rotor segments are three radial grooves 30 which extend from the central bore 34 in three tips of the rotor. The radial grooves 30 merge into the axial rotor slots 31 in the rotor tips. The grooves 30 and 31 serve to receive the flexible sealing elements. In the central bore 34 of the ring 35 is used.
  • Figure 3b The ring 35 is inserted into the bore 34 so that the rectangular pin 36 located on it sit in the grooves 30 of the rotor segments 28 and 29.
  • the ring 35 serves to seal the gap between the rotor segments 28 and 29 against the rotor axis.
  • the pins 36 also seal the joint and are at the same time abutment for the sealing cassettes 39.
  • Figure 3c The identical shape blades 37 are superimposed so that they show with their side sealing strips to opposite sides. It is thus formed a common sealing strip with an overlapping joint.
  • the compression spring 40 are supported against the pin 36.
  • the mold blades 37 cover the pins 36 so that the sealing unit formed therewith can be inserted into the rotor grooves 30 and 31
  • FIG. 3d The existing of the mold blades 37, the pressure wedge 39 and the compression spring 40 sealing unit is placed on the pin 36 of the sealing ring 35.
  • the sealing ring 35 with the sealing units sits in the grooves 30, 31 of the rotor segments 28, 29. These components form the sealing system of the rotor.
  • the compression springs 41 By the compression springs 41, the rotor segments 28, 29 pressed against the end faces of the housing. This spring force is necessary for the concerns of the rotor segments during the starting process. When the machine is running, the media pressure takes over this pressure function. To reduce the friction on the frontal surfaces, the rotor segments recesses 33, which cause a pressure relief of the rotor segments.
  • FIG 4a The rotor of a Wankelmaschine consists of a central rotor segment 42 and the two side rings 43. Both side rings 43 engage with the recesses 46 and the pin 47 in the lateral annular grooves 44 and the radial grooves 45 of the piston center part 42 a. In the piston middle part are the through holes 49 in which the compression springs 50 sit, which are supported against the recesses 46 on the side rings 43 and press them against the side walls of the machine and seal the rotor against a circumferential flow.
  • the side rings 43 have no function for transmitting the torque.
  • the mold blade 51 has its full thickness in the area 51a. In the region 51b, the mold blade has only half the thickness. Two identical mold blades are mutually overlapped so that they form a package which is inserted into the transverse grooves 48 and the radial grooves 45 of the rotor, that the two sides 51a are directed to the side surfaces of the rotor and the pins 47 of the side rings 43rd extend into the slots 5 Ie. Pin 47 and slots 5 Ie form with this overlap on the side surfaces of the rotor a closed seal.
  • FIG. 4b Two mold blades 51 form a space in the covers 51c
  • Figure 4c shows the fully assembled with the form of fins 51 plate packs and equipped with the side rings 43 rotor.
  • FIG. 5a The rotor of a rotary piston of the machine consists of the rotor segments 54 and 55, which have a force acting against the central shaft seal by the annular recess 57 is fitted into the annular groove 56.
  • the fixedly connected to the rotor segments 54 and 55 made of the same material or another suitable firmly inserted material sealing lips 58 inserted into one another.
  • the sealing lips 58 milling mills 59, which allow the mutual nesting.
  • Figure 5b In Figure 5b, the rotor segments 54 and 55 are facing each other in the same axis alignment so that the recess 57 is directed to the annular groove 56.
  • the sealing lips 58 fit with their milled grooves 59 into one another such that in the radial and axial direction of the rotor a dynamic tightness acting in the movement sequence of the rotor is achieved.
  • the sealing of the rotor segments 54 and 55 against the end faces of the housing is achieved by the spring force of the springs 62.
  • the recesses 63 on the outer sides of the piston segments 54 and 55 cause the media forces which act in the parting lines of the rotor segments 54 and 55 as acting after the end faces of the rotor frictional forces are largely compensated by externally acting 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)

Abstract

Sealing system of rotary piston machines, characterized in that the rotor comprises rotor discs (1, 2) which are arranged next to one another, are seated on the common rotor axle and are pressed apart from one another by acting spring and/or gas forces in the joints (11) between the discs in such a way that those end sides (6, 8) of the discs (1, 2) which point towards the side walls of the housing bear sealingly against the latter and thus prevent the access of the medium to the axles. Assemblies comprising movable shaped lamellae (3, 4) which adapt to the changing joint widths and prevent an inner flow around the rotor are present in the part joints between the discs (1, 2).

Description

Beschreibung description
SYSTEM ZUR ABDICHTUNG DES KOLBENS VON ROTATIONSKOLBENMASCHINENSYSTEM FOR SEALING THE PISTON OF ROTATION PISTON MACHINES
Technisches GebietTechnical area
[0001] Gegenstand der Erfindung ist ein Prinzip und System zur Abdichtung von Rotationskolben gegen die umgebenden Gehäusewand von Rotations-Kompressions- und -Expansionsmaschinen.The invention relates to a principle and system for sealing rotary piston against the surrounding housing wall of rotary compression and -Expansionsmaschinen.
Stand der TechnikState of the art
[0002] Für Rotationskolbenmaschinen sind unterschiedliche Lösungswege zur Herstellung der Dichtheit des Kolbens gegen die umgebenden Gehäusewand beim Bewegungsablauf bekannt. Sogenannte Flügelzellenmaschinen erreichen eine fast gute Dichtheit durch die hohe Maßgenauigkeit der Bauteile Rotor, Gehäuse und Flügel, die den Arbeitsraum umschließen und die zur Funktion notwendigen kleinstmöglichen Spalte zwischen den Bauteilen ergeben. In bestimmten Anwendungsfällen lässt sich die Dichtheit noch verbessern, indem ein geeignetes Fluid in die Maschine gebracht wird und ein geringer Fluidfilm als Dichtkörper zwischen den Bauteilen entsteht. Bei der Durchführung von Kompressionsaufgaben solcher Maschinen werden die verbleibenden Spaltverluste in Kauf genommen. Sie wirken sich als Verminderung der Förderleistung aus, die durch Erhöhung der Antriebsleistung des Kompressors ausgeglichen werden kann. Bei Expansionsmaschinen können die Spaltverluste zum Funktionsverlust führen, insbesondere dann, wenn eine schädliche Expansion überwiegend über die Spalte erfolgt und sich nicht als Nutzdrehkraft des Rotors auswirkt.For rotary piston machines different approaches to the production of the tightness of the piston against the surrounding housing wall during the movement are known. So-called vane-cell machines achieve almost perfect tightness due to the high dimensional accuracy of the components rotor, housing and wings, which enclose the working space and give the smallest possible gap between the components necessary for the function. In certain applications, the tightness can still be improved by a suitable fluid is brought into the machine and a small fluid film is formed as a sealing body between the components. When performing compression tasks of such machines, the remaining gap losses are accepted. They have the effect of reducing the delivery rate, which can be compensated by increasing the drive power of the compressor. In expansion machines, the gap losses can lead to loss of function, especially if a harmful expansion takes place predominantly over the gap and does not act as Nutzdrehkraft of the rotor.
[0003] Hingegen können expandierende Medien in höheren Temperaturbereichen, wie sie bei thermischen Kraftmaschinen auftreten, zur Zerstörung der Maschine führen, indem die durchtretenden heißen Gase an diesen Stellen zerstörende Materialabtragungen bewirken, die die Spalte noch vergrößern.On the other hand, expanding media in higher temperature ranges, such as those occurring in thermal engines, lead to the destruction of the machine by causing the passing hot gases at these sites destructive material erosion, which increase the column even more.
[0004] In grundlegenden Untersuchungen von F. Wankel wurde gefunden, dass insbesondere Rotationsbrennkraftmaschinen, die mehr als drei relativ zueinander bewegte Bauteile wie Rotor, am Rotor angeordnete bewegliche Kolbenteile und Gehäuse benutzen, nicht funktionieren können, da Dichtelemente nicht so angeordnet werden können, dass im Bewegungsablauf der Maschine ein in sich geschlossenes räumliches Dichtliniensystem mit gleicher geometrischer Gestalt möglich ist. Anschaulich tritt dieser Defekt bei einer Flügelzellenmaschine auf. Zwar kann durch federnde Dichtleisten entlang der Flügelkanten eine radiale und axiale Abdichtung gegen die Gehäusewand hergestellt werden, aber die Dichtlinie wird im Bereich der Rotornabe durch eine bleibende Unstetigkeit unterbrochen und führt zur Undichtheit der Maschine. Schlussfolgernd aus diesem Erfahrung ssatz wurde als bislang einzige funk- tionierende Rotationskolbenmaschine mit innerer Verbrennung durch F. Wankel ein Motortyp entwickelt, der nur 2 relativ zueinander bewegte, den Arbeitsraum umschließende Bauteile aufweist: ein Gehäuse mit einer trochoidenförmigen Laufbahn und ein ebenfalls von einer Trochoide abgeleiteter Rotationskolben als innerer Hüllkörper der Gehäuselaufbahn. Auf diesem Kolben lassen sich Dichtleisten anordnen, die die Bedingung der unveränderten geometrischen Gestalt erfüllen. DerIn fundamental investigations by F. Wankel it has been found that, in particular, rotary internal combustion engines which use more than three relatively moving components such as rotor, rotor-mounted movable piston parts and housings can not function since sealing elements can not be arranged such that in the sequence of motion of the machine a self-contained spatial sealing line system with the same geometric shape is possible. Illustratively, this defect occurs in a vane machine. Although it can be made by resilient sealing strips along the wing edges a radial and axial seal against the housing wall, but the sealing line is interrupted in the rotor hub by a permanent discontinuity and leads to leakage of the machine. Concluding from this experience, the only radio F. rotary engine with internal combustion developed by F. Wankel an engine type, the only two relatively moving, the work space enclosing components comprising: a housing with a trochoidenförmigen career and also derived from a Trochoide rotary piston as the inner envelope body of the housing track. On this piston can be arranged sealing strips that meet the condition of the unchanged geometric shape. Of the
Motortyp ist als Wankelmotor bekannt geworden. [0005] Trotz der Vorzüge und der erfolgreichen Entwicklung dieses Motortyps konnten einige technische Zielstellungen nicht erreicht werden. Dies betrifft die geometrisch bedingte Volumenänderung mit der benutzten Trochoide, die die Durchführung eines üblichen Dieselprozesses nicht gestattet. Dies betrifft auch, weniger einschneidend, die Schmierung der Dichtleisten sowie damit in Zusammenhang stehend die Wärmeabfuhr vom Kolben an die Gehäusewand.Engine type has become known as Wankel engine. Despite the merits and successful development of this engine type, some technical goals could not be achieved. This concerns the geometric volume change with the used trochoid, which does not allow the implementation of a conventional diesel process. This also applies, less drastic, the lubrication of the sealing strips and related to the heat dissipation from the piston to the housing wall.
Darstellung der ErfindungPresentation of the invention
[0006] Für die Erfindung wird sich die Aufgabe gestellt, ein Abdichtungssystem für Rotationskolbenmaschinen zu schaffen, das das Prinzip der gleichen geometrischen Gestalt der Dichtlinie nach F. Wankel so anwendet, dass auch andere Typen von Rotationskolbenmaschinen für Expansions- und Kompressionsprozesse in höheren Temperaturbereichen sowie mit verbesserten Eigenschaften hinsichtlich der Volumenänderung, der Schmierung und der Wärmabfuhr realisiert werden können.The object is to provide a sealing system for rotary piston machines, which applies the principle of the same geometric shape of the sealing line according to F. Wankel so that other types of rotary piston machines for expansion and compression processes in higher temperature ranges as well can be realized with improved volume change, lubrication and heat dissipation characteristics.
[0007] Die erfinderische Lösung besteht darin, dass der Rotor aus zwei oder mehr parallelen Rotor-Scheibensegmenten besteht, von denen die äußeren, zu den stirnseitigen Gehäusewänden weisenden Scheiben durch Feder- und/oder Gaskräfte so an die Gehäusewand gedrückt werden, dass sie dort mit ihrer Fläche dichtend anliegen und eine Umströmung nicht möglich ist sowie darin, dass die Abdichtung der zwischen den Rotor-Segmentscheiben entstehenden Fugen durch Dichtleisten innerhalb der Fugen verschlossen werden und diese Dichtleisten an die Dichtleisten, die an der Gehäuselaufbahn anliegen federnd so anschließen, dass sich ein System durchgängiger ebener Dichtlinien ergibt, das keine Unterbrechungen mehr aufweist.The inventive solution is that the rotor consists of two or more parallel rotor disc segments, of which the outer, facing the frontal housing walls discs are pressed by spring and / or gas forces on the housing wall, that they there abut sealingly with its surface and a flow around is not possible and in that the sealing of the resulting between the rotor segment discs 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 resiliently that a system of continuous planar sealing lines results, which no longer has interruptions.
[0008] Die erfinderische Lösung besteht weiterhin darin, dass die Dichtleisten durch Pakete von beweglichen Formlamellen gebildet werden, die mit sich und zusammen mit den Rotor-Scheibensegmenten Labyrinthdichtungen bilden sowie darin, dass die Lamellenpakete sich mittels Feder- und/oder Medienkräften an die geometrischen Veränderungen der Rotationskolbenmaschine, die im Bewegungsablauf oder durch Drücke und Temperaturen eintreten, anpassen können.The inventive solution further consists in that the sealing strips are formed by packages of movable mold plates, which form labyrinth seals with itself and together with the rotor disk segments and in that the disk packs by means of spring and / or media forces to the geometric Variations of the rotary piston machine, which occur in the movement or by pressures and temperatures can adapt.
[0009] Die erfinderische Lösung besteht auch darin, dass die Dichtleisten, die am Umfang der Gehäuselaufbahn anliegen, aus Formlamellen bestehen, die sich so gegenseitig überdecken, dass sie Dichtkanten bilden, die bei der Rotorbewegung flexibel in die Eckbereiche des Gehäuses reichen und diese abdichten und darin, dass sich diese Formlamellen durch Federkräfte den radialen und axialen Änderungen im Gehäuse anpassen. [0010] Die erfinderische Lösung besteht auch darin, dass die Formlamellen Schrägkanten haben, so dass keilförmige Druckelemente mittels Federkraft so auf die Schrägkanten wirken können, dass die Lamellen in beiden Richtungen einer Ebene gegeneinander verschoben werden können und somit die Pakete von Formlamellen Dichtelemente bilden, die sich an den Raum, in dem sie angeordnet sind, nach zwei Richtungen anpassen können.The inventive solution consists in the fact that the sealing strips, which bear against the circumference of the housing track, consist of mold blades that overlap each other so that they form sealing edges that extend flexible in the rotor movement in the corner regions of the housing and seal them and in that these form blades by spring forces the radial and axial changes in the housing to adjust. The inventive solution consists in the fact that the form of slats have skewed edges, so that wedge-shaped pressure elements can act by spring force on the beveled edges, that the slats can be moved in both directions of a plane against each other and thus form the packets of mold blades sealing elements, which can adapt to the room in which they are arranged in two directions.
[0011] Erfindungsgemäß weisen die Scheibensegmente, aus denen der Rotor zusammengesetzt ist, an den zueinander weisenden Seiten radiale Nuten auf, in die Pakete von Formlamellen eingepasst werden, so dass die Fugen zwischen den Scheibensegmenten durch flexible Labyrinthdichtungen abgedichtet werden. Erfindungsgemäß weisen die Scheibensegmente auf den einander zugekehrten Seiten um die Rotorachse herum Ringnuten auf, in die entweder ein geschlossener Ring eingesetzt werden kann und den Rotor zur Achse hin abdichtet oder ein Scheibensegment einen ringförmigen Rezess hat, der in die gegenüberliegende Ringnute der Gegenscheibe passt und den Rotor zur Achse hin abdichtet.According to the invention, the disk segments, of which the rotor is composed, on the mutually facing sides on radial grooves are fitted into the packets of mold blades, so that the joints between the disk segments are sealed by flexible labyrinth seals. According to the invention, the disk segments on the mutually facing sides around the rotor axis around annular grooves, in which either a closed ring can be used and seals the rotor to the axis or a disc segment has an annular recess which fits into the opposite annular groove of the counter-disc and the Rotor seals towards axis.
[0012] Ein weiterer Teil der erfinderischen Lösung besteht darin, dass die Rotorscheiben, die den Kolben bilden, an ihren Außenflächen Ausnehmungen zwischen den Kolbenspitzen aufweisen derart, dass an diesen Ausnehmungen Medienkräfte angreifen können, die den in den Fugen wirkenden Medienkräften entgegen gerichtet sind und so die resultierenden Andruckkräfte gegen die Gehäusewand auf das Maß reduzieren, das die Dichtheit gewährleistet, jedoch die Reibkräfte minimiert.Another part of the inventive solution is that the rotor disks, which form the piston, on their outer surfaces recesses between the piston tips have such that at these recesses media forces can attack, which are directed against the forces acting in the joints media forces and so reduce the resulting pressure forces against the housing wall to the extent that ensures the tightness, but minimizes the frictional forces.
[0013] Zur erfinderischen Lösung gehört, dass zwischen den Rotor- Segmentscheiben Druckfedern angeordnet sind, die die Scheiben nach außen drücken, wenn die Maschine im Anlaufvorgang noch nicht die Medienkräfte hat, die die Scheiben auseinander drücken.Belongs to the inventive solution that between the rotor segment discs compression springs are arranged, which press the discs outwards when the machine in the start-up process does not yet have the media forces that press the discs apart.
[0014] Zur erfinderischen Lösung gehört auch, dass die Scheibensegmente so ausgebildet sind, dass sie selbst als Formlamelle im Verbund mit weiteren Formlamellen eine Labyrinthabdichtung bilden.The inventive solution also includes that the disc segments are designed so that they form a labyrinth seal even as a form of lamella in conjunction with other form of slats.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
[0015] Die Erfindung wird an nachfolgenden Beispielen beschrieben. Es bedeuten die Bezeichnungen: [0016] Bild 1 Prinzip der anpassbaren Dichtlinie am FlügelzellenrotorThe invention will be described by the following examples. The designations mean: [0016] FIG. 1 Principle of the adaptable sealing line on the vane-cell rotor
1,2 Rotorsegment1.2 rotor segment
3,4 Flügelteil3.4 wing part
5 Führungsnute für Flügel5 guide grooves for wings
6, 8 Planfläche der Rotorsegmente gegen die Seitenscheiben der Maschine6, 8 Planar surface of the rotor segments against the side windows of the machine
7,9 Planfläche der Flügel gegen die Seitenscheiben der Maschine7.9 plane of the wings against the side windows of the machine
10 Abdeckring für die Fuge 11 zwischen den Rotorsegmenten10 covering ring for the gap 11 between the rotor segments
11 Fuge zwischen den Rotorsegmenten [0017] Bild 2a Flügelzellenrotor 12,13 Rotorsegment11 joint between the rotor segments Figure 2a vane rotor 12,13 rotor segment
14 Druckfedern zwischen den zwischen den Rotorsegmenten14 compression springs between the between the rotor segments
15 Bohrungen in den Rotor Segmenten zur Aufnahme der Druckfedern 1415 holes in the rotor segments to accommodate the compression springs 14
16 Aufnahmebohrung für die Nabe am Rotorsegment16 Mounting hole for the hub on the rotor segment
17 Nabe am Rotorsegment17 hub on the rotor segment
18 Schlitz in den Rotorsegmenten zur Aufnahme der Flügel18 slot in the rotor segments to accommodate the wings
19 Fuge zwischen den Rotorsegmenten [0018] Bild 2b Flügelkassette19 Joint between the rotor segments Fig. 2b Wing cassette
20 Flügelkassette20 wing cassette
21, 22 Halbflügel mit innerer Schrägkante21, 22 Half-wing with inner bevel
23 innere Schrägkante23 inner bevel
24 Druckkeil24 pressure wedge
25 Druckfedern25 compression springs
26 Kassettenhülle zur Aufnahme der Flügelteile 22,23, 24, 2526 cassette shell for receiving the wing parts 22,23, 24, 25th
27 Kassette27 cassette
[0019] Bild 3a: geteilter Wankel-Rotor 28, 29 RotorsegmentFigure 3a: split Wankel rotor 28, 29 rotor segment
30 radiale Rotornute30 radial rotor groove
31 axiale Rotornute31 axial rotor groove
32 Aufnahmebohrung32 receiving bore
33 Ausnehmung33 recess
34 Zentralbohrung [0020] Bild 3b: Innerer Dichtring34 Central hole Fig. 3b: Inner sealing ring
35 Dichtring35 sealing ring
36 Zapfen am Dichtring [0021] Bild 3c. 3d: Dichtgruppe36 Pins on the sealing ring [0021] FIG. 3c. 3d: sealing group
37 Formlamelle mit innerer Schrägkante37 Form blade with inner bevel
38 Schrägkante38 beveled edge
39 Druckkeil39 pressure wedge
40 Druckfeder40 compression spring
41 Druckfeder41 compression spring
[0022] Bild 4a. 4b. 4c. 4d: Zusammengesetzter Wankel-KolbenFigure 4a. 4b. 4c. 4d: Composite Wankel piston
42 Kolben-Mittelteil42 piston middle part
43 Kolben-Seitenring43 piston side ring
44 Ringnuten im Kolbenmittelteil44 annular grooves in the piston center part
45 Radialnuten im Kolbenmittelteil45 radial grooves in the center of the piston
46 Rezess am Kolben-Seitenring46 Rezess on the piston side ring
47 Zapfen am Kolben-Seitenring47 Pins on the piston side ring
48 Quernute am Kolben-Mittelteil 49 Durchgangsbohrung im Kolbenmittelteil48 transverse grooves on the piston middle part 49 Through hole in the center of the piston
50 Druckfeder50 compression spring
51 Formlamelle 51a Außenseite51 mold blade 51a outside
51b Überlappung skante 51c Abdeckung 5 Id Schrägstück 5 Ie Schlitz51b overlap skante 51c cover 5 Id slant piece 5 Ie slot
52 Druckkeil52 pressure wedge
53 Druckfeder53 compression spring
[0023] Bild 5a. 5b: Wankelkolben mit angesetzten DichtleistenFigure 5a. 5b: Wankelkolben with attached sealing strips
54 Rotorsegment mit Ringnute54 Rotor segment with ring groove
55 Rotorsegment mit Rezess55 rotor segment with recess
56 Ringnute56 ring grooves
57 Rezess57 Rezess
58 Dichtlippe58 sealing lip
59 Einfräsung59 Milling
60 Ausfräsung60 milled out
61 Bohrung im Rotorsegment, nicht durchgehend61 Hole in the rotor segment, not continuous
62 Druckfeder62 compression spring
63 Ausnehmung63 recess
Weg(e) zur Ausführung der ErfindungWay (s) for carrying out the invention
[0024] Bild 1: Das Prinzip der Abdichtung wird anhand Bild 1 beschrieben. Der Rotor der Maschine ist in die beiden Segmentscheiben 1 und 2 getrennt, die mit ihren Außenflächen 6 und 8 durch Feder-/Medienkräfte an die Stirnseiten des Gehäuses gedrückt werden und so den Rotor gegen das Gehäuse abdichten. Die Fuge 11 zwischen den Segmentscheiben wird nach innen zur Rotorwelle hin durch eine umlaufende Abdeckung 10 verschlossen. Mit der Abdeckung 10 sind die Führungsnuten 5 verbunden, in denen Flügelteile 3, 4 sitzen, die einen Flügel des Flügelzellenrotors bilden. Die Flügel 3, 4 werden durch Formlamellen gebildet, die sich den geometrischen Änderungen anpassen können.Figure 1: The principle of the seal is described with reference to Figure 1. The rotor of the machine is separated into the two segment discs 1 and 2, which are pressed with their outer surfaces 6 and 8 by spring / media forces on the front sides of the housing and thus seal the rotor against the housing. The gap 11 between the segment discs is closed inwardly towards the rotor shaft by a peripheral cover 10. With the cover 10, the guide grooves 5 are connected, in which wing parts 3, 4 sit, which form a wing of the vane cell rotor. The wings 3, 4 are formed by form of slats, which can adapt to the geometric changes.
[0025] Die Realisierung dieses Abdichtungsprinzips wird anhand einer Ausführung nach den Bildern 2a, 2b und 2c, 3a, 3b, 3c und 3d, 4a, 4b und 4c beschrieben.The realization of this sealing principle will be described with reference to an embodiment according to the images 2a, 2b and 2c, 3a, 3b, 3c and 3d, 4a, 4b and 4c.
[0026] Bild 2a: Der Rotor des Flügelzellenrotors besteht aus den Scheibensegmenten 12 und 13, die durch Federn 14 auseinander gedrückt werden und so an den Stirnseiten des Gehäuses dichtend anliegen. Die Federn befinden sich in den (nicht durchgehenden) Bohrungen 15 in beiden Segmentscheiben. Zwischen den Segmentscheiben befindet sich die Trennfuge 19. Die Segmentscheibe 12 greift mit der Nabe 17 in die Aufnahme 16 der Segmentscheibe 13 ein und Verschließt die Trennfuge 19, entsprechend der Abdeckung 10 nach Bild 1. Die Schlitze 18 in den Segmentscheiben 12 und 13 ent- sprechen den Führungsnuten 5 nach Bild 1.Figure 2a: The rotor of the vane cell rotor consists of the disk segments 12 and 13, which are pressed apart by springs 14 and thus sealingly abut against the end faces of the housing. The springs are located in the (non-continuous) holes 15 in both segment discs. The segmental disc 12 engages with the hub 17 in the receptacle 16 of the segment disc 13 and closes the parting line 19, corresponding to the cover 10 according to Figure 1. The slots 18 in the segment discs 12 and 13 speak the guide grooves 5 according to Figure 1.
[0027] Bild 2b: In den Schlitzen 18 des Rotors befinden sich die Flügelkassetten 20, die sich aufgrund ihrer inneren Federkräfte in radialer Richtung an die Gehäuselaufbahn und in axialer Richtung an die Stirnseiten des Gehäuses anpassen und sich zugleich auch in die Ecken zwischen beiden Laufflächen des Gehäuses erstrecken und diese abdichten.Figure 2b: In the slots 18 of the rotor are the wing cassettes 20, which adapt due to their internal spring forces in the radial direction of the housing track and in the axial direction of the front sides of the housing and at the same time in the corners between the two treads extend the housing and seal it.
[0028] In einer Flügelkassette befinden sich die beiden baugleichen Halbflügel 21 und 22, die so aufeinandergelegt werden, dass sie gegeneinander verschoben werden können und somit an den Stirnseiten des Gehäuses als Abdichtung zur Anlage kommen. In dieser Stellung bilden sie mit den Scheibensegmenten 12 und 13 durchgängige Dichtflächen gegen den Durchtritt des Mediums. Die Andruckkraft der Halbflügel 21 und 22 für diese Anlage wird durch die inneren Schrägkanten 23 und den durch die Druckfeder 25 aufliegenden Druckkeil 24 erreicht. Der Druckkeil 24 befindet sich in dem von den Halbflügeln 21 und 22 gebildeten inneren Raum. Die Druckfeder 25 stützt sich gegen den Boden der Kassettenhülle 27 ab. Die radiale dichtende Bewegung der Halbflügel 21 und 22 im Dreh verlauf des Rotors wird zusätzlich durch die Federn 26 erreicht.In a wing cassette, the two identical half-wings 21 and 22, which are stacked so that they can be moved against each other and thus come to the front sides of the housing as a seal to the plant. In this position they form with the disc segments 12 and 13 continuous sealing surfaces against the passage of the medium. The pressure force of the half-wings 21 and 22 for this system is achieved by the inner beveled edges 23 and the pressure wedge 24 resting on the compression spring 25. The pressure wedge 24 is located in the inner space formed by the half-wings 21 and 22. The compression spring 25 is supported against the bottom of the cassette shell 27. The radial sealing movement of the half-wings 21 and 22 in the rotation of the rotor is additionally achieved by the springs 26.
[0029] Bild 2c: Bild 2c zeigt die ineinander steckenden Scheibensegmente 12 und 13 mit einer Flügelkassette 20 in dem Schlitz 18 in Rotor.Figure 2c: Figure 2c shows the nested disk segments 12 and 13 with a wing cassette 20 in the slot 18 in the rotor.
[0030] Eine andere Ausführungsform des Prinzips der Abdichtung eines Rotationskolbens zeigen die Bilder 3a, 3b, 3c und 3d für den Rotor einer Wankelmaschine.Another embodiment of the principle of sealing a rotary piston show the pictures 3a, 3b, 3c and 3d for the rotor of a Wankelmaschine.
[0031] Bild 3a: Der Rotor für eine Wankelmaschine besteht aus den beiden baugleichen Rotorsegmenten 28 und 29. In den Rotorsegmenten befinden sich drei radiale Nuten 30, die sich von der Zentralbohrung 34 in drei Spitzen des Rotors erstrecken. Die radialen Nuten 30 gehen in der Rotorspitzen in die axialen Rotornuten 31 über. Die Nuten 30 und 31 dienen der Aufnahme der flexiblen Dichtungselemente. In die Zentralbohrung 34 wird der Ring 35 eingesetzt.Figure 3a: The rotor for a Wankelmaschine consists of the two identical rotor segments 28 and 29. In the rotor segments are three radial grooves 30 which extend from the central bore 34 in three tips of the rotor. The radial grooves 30 merge into the axial rotor slots 31 in the rotor tips. The grooves 30 and 31 serve to receive the flexible sealing elements. In the central bore 34 of the ring 35 is used.
[0032] Bild 3b: Der Ring 35 wird in die Bohrung 34 so eingesetzt, dass die an ihm befindlichen rechteckigen Zapfen 36 in den Nuten 30 der Rotorsegmente 28 und 29 sitzen. Der Ring 35 dient der Abdichtung der Fuge zwischen den Rotorsegmenten 28 und 29 gegen die Rotorachse. Die Zapfen 36 dichten ebenfalls die Fuge ab und sind zugleich Widerlager für die Dichtkassetten 39.Figure 3b: The ring 35 is inserted into the bore 34 so that the rectangular pin 36 located on it sit in the grooves 30 of the rotor segments 28 and 29. The ring 35 serves to seal the gap between the rotor segments 28 and 29 against the rotor axis. The pins 36 also seal the joint and are at the same time abutment for the sealing cassettes 39.
[0033] Bild 3c: Die baugleichen Formlamellen 37 liegen so übereinander, dass sie mit ihren seitlichen Dichtleisten zu entgegengesetzten Seiten zeigen. Es wird so eine gemeinsame Dichtleiste mit einer sich überlappenden Fuge gebildet. In den zwischen den Formlamellen 37 gebildeten Hohlraum wird der Druckkeil 39 gelegt, der durch die Druckfeder 40 gegen die Schrägkanten der Formlamellen 37 drückt und diese sowohl radial zur Gehäuselaufbahn schiebt als auch gleichzeitig die Formlamellen so auseinander drückt, dass ihre Ecken beim Bewegungsablauf des Kolbens in die Ecklinien zwischen Gehäuselaufbahn und Seitenflächen gedrückt werden und diese abdichten. Die Druckfedern 40 stützen sich gegen die Zapfen 36 ab. Die Formlamellen 37 überdecken die Zapfen 36, so dass die damit gebildete Dichtungseinheit in die Rotornuten 30 und 31 eingesetzt werden kannFigure 3c: The identical shape blades 37 are superimposed so that they show with their side sealing strips to opposite sides. It is thus formed a common sealing strip with an overlapping joint. In the cavity formed between the mold blades 37 of the pressure wedge 39 is placed, which pushes by the compression spring 40 against the inclined edges of the mold blades 37 and this pushes both radially to the housing track and at the same time presses apart the mold blades so that their corners in the movement of the piston in the corner lines between the housing track and side surfaces are pressed and seal them. The compression springs 40 are supported against the pin 36. The mold blades 37 cover the pins 36 so that the sealing unit formed therewith can be inserted into the rotor grooves 30 and 31
[0034] Bild 3d: Die aus den Formlamellen 37, dem Druckkeil 39 und der Druckfeder 40 bestehenden Dichteinheit wird auf den Zapfen 36 des Dichtrings 35 gesteckt. Der Dichtring 35 mit den Dichteinheiten sitzt in den Nuten 30, 31 der Rotorsegmente 28, 29. Diese Bauteile bilden das Dichtsystem des Rotors. Durch die Druckfedern 41 werden die Rotorsegmente 28, 29 an die stirnseitigen Flächen des Gehäuses gedrückt. Diese Federkraft ist für das Anliegen der Rotorsegmente während des Anfahrvorgangs notwendig. Bei laufender Maschine übernimmt der Mediendruck diese Andruckfunktion. Zur Reduzierung der Reibung an den stirnseitigen Flächen weisen die Rotorsegmente Ausnehmungen 33 auf, die eine Druckentlastung der Rotorsegmente bewirken.Figure 3d: The existing of the mold blades 37, the pressure wedge 39 and the compression spring 40 sealing unit is placed on the pin 36 of the sealing ring 35. The sealing ring 35 with the sealing units sits in the grooves 30, 31 of the rotor segments 28, 29. These components form the sealing system of the rotor. By the compression springs 41, the rotor segments 28, 29 pressed against the end faces of the housing. This spring force is necessary for the concerns of the rotor segments during the starting process. When the machine is running, the media pressure takes over this pressure function. To reduce the friction on the frontal surfaces, the rotor segments recesses 33, which cause a pressure relief of the rotor segments.
[0035] Bild 4a: Der Rotor einer Wankelmaschine besteht aus einem mittleren Rotorsegment 42 und den beiden Seitenringen 43. Beide Seitenringe 43 greifen mit den Rezessen 46 und den Zapfen 47 in die seitlichen Ringnuten 44 und die Radialnuten 45 des Kolbenmittelteils 42 ein. Im Kolbenmittelteil befinden sich die Durchgangsbohrungen 49, in denen die Druckfedern 50 sitzen, die sich gegen die Rezesse 46 an den Seitenringen 43 abstützen und diese gegen die Seitenwände der Maschine drücken und den Rotor gegen eine Umfang sumströmung abdichten. Die Seitenringe 43 haben keine Funktion zur Übertragung des Drehmoments.Figure 4a: The rotor of a Wankelmaschine consists of a central rotor segment 42 and the two side rings 43. Both side rings 43 engage with the recesses 46 and the pin 47 in the lateral annular grooves 44 and the radial grooves 45 of the piston center part 42 a. In the piston middle part are the through holes 49 in which the compression springs 50 sit, which are supported against the recesses 46 on the side rings 43 and press them against the side walls of the machine and seal the rotor against a circumferential flow. The side rings 43 have no function for transmitting the torque.
[0036] Bild 4d: Die Formlamelle 51 hat ihre volle Dicke im Bereich 51a. Im Bereich 51b weist die Formlamelle nur die halbe Dicke auf. Zwei gleiche Formlamellen werden sich gegenseitig überlappend so aufeinandergelegt, dass sie ein Paket bilden, das so in die Quernute 48 und die Radialnuten 45 des Rotors eingesetzt wird, dass die beiden Seiten 51a zu den Seitenflächen des Rotors gerichtet sind und die Zapfen 47 der Seitenringe 43 in die Schlitze 5 Ie hineinreichen. Zapfen 47 und Schlitze 5 Ie bilden mit dieser Überlappung an den Seitenflächen des Rotors eine geschlossene Dichtung.Image 4d: The mold blade 51 has its full thickness in the area 51a. In the region 51b, the mold blade has only half the thickness. Two identical mold blades are mutually overlapped so that they form a package which is inserted into the transverse grooves 48 and the radial grooves 45 of the rotor, that the two sides 51a are directed to the side surfaces of the rotor and the pins 47 of the side rings 43rd extend into the slots 5 Ie. Pin 47 and slots 5 Ie form with this overlap on the side surfaces of the rotor a closed seal.
[0037] Bild 4b: Zwei Formlamellen 51 bilden mit den Abdeckungen 51c einen Raum imFIG. 4b: Two mold blades 51 form a space in the covers 51c
Inneren des Lamellenpaketes, in dem der Druckkeil 52 sitzt, der an den Schrägstücken 5 Id anliegt und durch die Druckfeder 53 gegen diese drückt. Die Druckfeder 53 stützt sich gegen die Zapfen 47 ab, so dass die Federkraft sich in radialer und axialer Richtung auf die Formlamellen 51 als Dichtkraft auswirkt. Zusammen mit den Federkräften der Druckfedern 50, die auf die Seitenringe 43 wirken, wird so ein federndes Dichtsystem erreicht, das den Rotor gegen die Gehäusewand abdichtet.Inside the disk pack, in which the pressure wedge 52 is seated, which abuts against the oblique pieces 5 Id and presses by the compression spring 53 against this. The compression spring 53 is supported against the pin 47, so that the spring force in the radial and axial direction on the mold plates 51 acts as a sealing force. Together with the spring forces of the compression springs 50, which act on the side rings 43, so a resilient sealing system is achieved, which seals the rotor against the housing wall.
[0038] Bild 4c: Bild 4c zeigt den vollständig mit den aus Formlamellen 51 zusammengesetzten Lamellenpakete und mit den Seitenringen 43 bestückten Rotor.Figure 4c: Figure 4c shows the fully assembled with the form of fins 51 plate packs and equipped with the side rings 43 rotor.
[0039] Bild 5a: Der Rotor einer Rotationskolben der Maschine besteht aus den Rotorsegmenten 54 und 55, die eine gegen die Mittelwelle wirkende Abdichtung haben, indem der ringförmige Rezess 57 in die Ringnute 56 eingepasst wird. Ebenso werden die mit den Rotorsegmenten 54 und 55 fest verbundenen, aus dem gleichen Material oder einem anderen geeigneten fest eingefügten Material bestehenden Dichtlippen 58 ineinander gesteckt. Hierzu weisen die Dichtlippen 58 Einfräsungen 59 auf, die das wechselseitige Ineinanderstecken ermöglichen. In den Rotorsegmenten 54 und 55 befinden sich neben den Dichtlippen 58 Ausfräsungen 60 in einer geeigneten geometrischen Form, die die Funktion einer Spannungsentlastung haben, wenn auf die Dichtlippe 58 in Umfang srichtung des Rotors Reibungs- und Druckkräfte wirken, die eine entgegenfedernde Wirkung der Dichtlippen 58 erfordern.Figure 5a: The rotor of a rotary piston of the machine consists of the rotor segments 54 and 55, which have a force acting against the central shaft seal by the annular recess 57 is fitted into the annular groove 56. Likewise, the fixedly connected to the rotor segments 54 and 55, made of the same material or another suitable firmly inserted material sealing lips 58 inserted into one another. For this purpose, the sealing lips 58 milling mills 59, which allow the mutual nesting. In the rotor segments 54 and 55 are in addition to the sealing lips 58 cutouts 60 in a suitable geometric shape, which have the function of stress relief, when acting on the sealing lip 58 in the circumferential direction of the rotor friction and pressure forces, the entgegenfedernde effect of the sealing lips 58th require.
[0040] Bild 5b: In Bild 5b sind die Rotorsegmente 54 und 55 in gleicher Achsausrichtung so zueinander gewandt, dass der Rezess 57 auf die Ringnute 56 gerichtet ist. Beim Einfügen des Rotorsegments 55 in das Rotorsegment 54 fügen sich die Dichtlippen 58 mit ihren Einfräsungen 59 so ineinander, dass in radialer und axialer Richtung des Rotors eine dynamische, im Bewegungsablauf des Rotors wirkende Dichtheit erreicht wird.Figure 5b: In Figure 5b, the rotor segments 54 and 55 are facing each other in the same axis alignment so that the recess 57 is directed to the annular groove 56. When inserting the rotor segment 55 into the rotor segment 54, the sealing lips 58 fit with their milled grooves 59 into one another such that in the radial and axial direction of the rotor a dynamic tightness acting in the movement sequence of the rotor is achieved.
[0041] Die Abdichtung der Rotorsegmente 54 und 55 gegen die Stirnseiten des Gehäuses wird durch die Federkraft der Federn 62 erreicht. Die Ausnehmungen 63 an den Außenseiten der Kolbensegmente 54 und 55 bewirken, dass die Medienkräfte, die in den Trennfugen der Rotorsegmente 54 und 55 als nach den Stirnseiten des Rotors hin wirkende Reibkräfte wirken, weitgehend durch von außen wirkende Medienkräfte kompensiert werden. The sealing of the rotor segments 54 and 55 against the end faces of the housing is achieved by the spring force of the springs 62. The recesses 63 on the outer sides of the piston segments 54 and 55 cause the media forces which act in the parting lines of the rotor segments 54 and 55 as acting after the end faces of the rotor frictional forces are largely compensated by externally acting media forces.

Claims

Ansprücheclaims
[0001] Dichtsystem von Rotationskolbenmaschinen dadurch gekennzeichnet, dass derSealing system of rotary piston machines, characterized in that the
Rotor aus nebeneinander angeordneten Rotorscheiben besteht, die auf der gemeinsamen Rotorachse sitzen und durch wirkende Feder- und/oder Gaskräfte in den Fugen zwischen den Scheiben so auseinander gedrückt werden, dass die zu den Seitenwänden des Gehäuses zeigenden Stirnseiten der Scheiben dichtend daran anliegen und so den Zugang des Mediums zu den Achsen verhindern.Rotor consists of juxtaposed rotor discs, which sit on the common rotor axis and are pressed apart by acting spring and / or gas forces in the joints between the discs so that the side walls of the housing facing end faces of the discs sealingly abut it and so on Prevent access of the medium to the axles.
[0002] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass in den Teilfugen zwischen den Scheiben Pakete aus beweglichen Formlamellen vorhanden sind, die sich den veränderlichen Fugenbreiten anpassen und eine innere Umströmung des Rotors durch das Medium verhindern.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that in the parting lines between the discs packages of movable mold blades are present, which adapt to the variable joint widths and prevent internal flow around the rotor through the medium.
[0003] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass zwischen den Scheiben Pakete aus beweglichen Formlamellen angeordnet sind, die sich den veränderlichen radialen Abständen von der Rotorachse zur Gehäuselaufbahn anpassen und eine äußere Umströmung des Rotors durch das Medium verhindern.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that between the discs packets of movable mold blades are arranged, which adapt to the variable radial distances from the rotor axis to the housing track and prevent external flow around the rotor through the medium.
[0004] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass bewegliche Formlamellen verwendet werden, die durch ihre gegenseitigen Überdeckungen Labyrinthdichtungen bilden, die eine dynamische Abdichtung des Rotors in den Teilfugen und an den Berührungsstellen zur Gehäuselaufbahn bewirken.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that movable mold plates are used, which form by their mutual overlaps labyrinth seals that cause a dynamic sealing of the rotor in the parting lines and at the contact points to the housing track.
[0005] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass bewegliche Formlamellen verwendet werden, die sich so gegenseitig überdecken, dass mit ihren gegenseitigen Überdeckungen Räume zur Aufnahme von Druckfedern gebildet werden, die die wirkenden Kräfte zum Auseinanderstreben der Formlamellen in den Achsrichtungen quer zur Teilfuge und in radialer Richtung zu den Berührungsstellen des Rotors an der Gehäuselaufbahn ausüben.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that movable mold slats are used, which overlap each other so that with their mutual overlaps spaces are formed for receiving compression springs, the forces acting to diverge the form of slats in the Apply axial directions transverse to the parting line and in the radial direction to the contact points of the rotor on the housing track.
[0006] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass bewegliche Formlamellen mit Schrägkanten verwendet werden derart, dass ein Druckkeil durch Kraftzerlegung an der Schrägkante die Formlamellen sowohl in ihrer gegenseitigen Überdeckung auseinander als auch das Paket der Formlamellen in radialer Richtung gegen die Gehäuselaufbahn drückt.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that movable mold plates are used with bevelled edges such that a pressure wedge by power separation on the bevel edge of the mold slats both in their mutual overlap apart and the package of the form slats in the radial direction pushes the housing track.
[0007] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass bewegliche Formlamellen verwendet werden, die sich so gegenseitig überdecken, dass mit ihren gegenseitigen Überdeckungen einen Raum zur Aufnahme von Druckkeilen gebildet wird, die mittels Federkraft gegen die Schrägkanten der Formlamellen drücken und die Formlamellen zur Anlage an die seitlichen und radialen Gehäusewände bringen.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that movable mold slats are used, which overlap each other so that with their mutual overlaps a space for receiving pressure wedges is formed, which press by means of spring force against the inclined edges of the mold blades and the mold blades to Move the system to the side and radial housing walls.
[0008] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass bewegliche Formlamellen verwendet werden, die sich gegenseitig überdecken und in ihrer Überdeckung bewegliche, vorzugsweise abgerundete Dichtkanten des Rotors in radialer Richtung gegen die Gehäuselaufbahn und in seitlicher Richtung ebene Dichtflächen gegen Seitenflächen des Gehäuses ergeben.Sealing system of rotary piston machines with a rotor according to claim 1, characterized in that movable mold slats are used, which cover each other and in their coverage movable, preferably rounded sealing edges of the rotor in the radial direction against the housing track and in the lateral direction flat sealing surfaces against side surfaces of the housing.
[0009] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass die Rotor Scheiben auf den zueinander gekehrten Seiten um die gemeinsame Achse herum Rezesse und Ringnuten haben, die so ineinander gesteckt werden, dass Labyrinthdichtungen gebildet werden, die den Zutritt des Mediums zur Drehachse verhindern.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that the rotor discs on the sides facing each other around the common axis around Rezesse and annular grooves, which are inserted into one another, that labyrinth seals are formed, the access of the medium to prevent the axis of rotation.
[0010] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass die Rotor Scheiben auf den zueinander gekehrten Seiten radiale Nuten haben, in die Pakete von Formlamellen eingesetzt werden, die den Zutritt des Mediums zu anderen Arbeitsräumen der Rotationskolbenmaschine verhindern.Sealing system of rotary piston machines with a rotor according to claim 1, characterized in that the rotor discs have on the sides facing each other radial grooves are used in the packets of mold blades, which prevent the access of the medium to other working spaces of the rotary piston machine.
[0011] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass die Rotorscheiben periphere Nuten haben, in die Pakete von Formlamellen eingesetzt werden, die über die gesamte Rotorbreite gespreizt werden und sowohl seitlich als auch radial den Zutritt des Mediums zu anderen Arbeitsräumen der Rotationskolbenmaschine verhindern.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that the rotor discs have peripheral grooves are used in the packages of form blades which are spread over the entire rotor width and both side and radial access of the medium to other workrooms prevent the rotary piston machine.
[0012] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 1 dadurch gekennzeichnet, dass die zwischen den Rotorscheiben eingesetzten Formlamellen infolge ihrer Eigenschaft zur federkraftbewirkten Änderung ihrer Größe in zwei Achsrichtungen gleichzeitig alle Formänderungen der Kolbens im Bewegungsablauf der Maschine ausführen können und damit die Funktion einer universellen Labyrinthabdichtung in jedem der baulichen Winkelsektoren eines Rotationskolbens ausüben.Sealing system of rotary piston engines with a rotor according to claim 1, characterized in that the form slats used between the rotor discs due to their property for spring-induced change in size in two axial directions can simultaneously perform all changes in shape of the piston in the movement of the machine and thus the function of a universal Labyrinth seal in each of the structural angular sectors of a rotary piston exercise.
[0013] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor aus nebeneinander angeordneten Rotorscheiben dadurch gekennzeichnet, dass die Rotorscheiben so ausgebildet sind, dass sie an den peripheren Außenseiten feste Dichtleisten haben, die über die ganze Rotorbreite reichen und die Dichtleisten eine weiche Elastizität in Umfang srichtung dadurch erhalten, dass im Rotormaterial neben ihnen solche peripheren Ausnehmungen angeordnet sind, die eine gegenüber dem umgebenden Rotormaterial geringere elastische Formsteifigkeit bewirken, so dass durch die Andruckkraft des Rotors gegen die Gehäusewand eine elastische Biegung der Dichtleiste entgegen der Bewegungsrichtung des Kolbens bei gleichzeitiger Abdichtung erreicht wird.Sealing system of rotary piston machines with a rotor of juxtaposed rotor discs, characterized in that the rotor discs are formed so that they have on the peripheral outer sides fixed sealing strips, which extend over the entire rotor width and the sealing strips a soft elasticity in the circumferential direction thereby obtained in that, in addition to them, such circumferential recesses are arranged in the rotor material, which effect a lower elastic stiffness relative to the surrounding rotor material, so that an elastic bending of the sealing strip against the direction of movement of the piston with simultaneous sealing is achieved by the pressure force of the rotor against the housing wall.
[0014] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 13 dadurch gekennzeichnet, dass die Rotorscheiben so ausgebildet sind, dass die Dichtleisten in einem Teil ihrer Länge in ihrer Breite so abgestuft sind, dass sie mit der abgestuften Dichtleiste der Gegenseite gegeneinander gesteckt werden können, so dass sich durchgehende Dichtleisten ergeben, die radial an der Gehäuselaufbahn und seitlich an den Gehäuseseiten dichtend anliegen.Sealing system of rotary piston machines with a rotor according to claim 13 characterized in that the rotor discs are formed so that the sealing strips are stepped in a portion of their length in width so that they can be plugged against each other with the stepped sealing strip of the opposite side, so that there are continuous sealing strips, which radially on the housing track and sealingly abut the side of the housing.
[0015] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 13 dadurch gekennzeichnet, dass die Rotorscheiben so ausgebildet sind, dass die Dichtleisten zur Rotormitte hin mit Nuten und Passfedern in die Ringnuten und Rezesse weitergeführt sind, dass in den ineinander zueinander zugekehrten Seiten der Rotorscheiben ein geschlossenes Labyrinth-Dichtsystem gebildet wird.Sealing system of rotary piston engines with a rotor according to claim 13, characterized in that the rotor discs are formed so that the sealing strips are continued towards the rotor center with grooves and keys in the annular grooves and recesses, that in the mutually facing sides of the rotor discs closed labyrinth sealing system is formed.
[0016] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor nach Anspruch 13 dadurch gekennzeichnet, dass die Dichtleisten aus einem anderen Material bestehen können, das sich durch Einfügen oder einen anderen technologischen Vorgang von den Eigenschaften der Rotorscheibe unterscheiden kann, in das sie eingebettet sind.Sealing system of rotary piston machines with a rotor according to claim 13, characterized in that the sealing strips may consist of a different material, which may differ by insertion or other technological process from the properties of the rotor disk, in which they are embedded.
[0017] Dichtsystem von Rotationskolbenmaschinen mit einem Rotor aus nebeneinander angeordneten Rotorscheiben dadurch gekennzeichnet, dass die Rotorscheiben auf den zur Gehäusewand zeigenden Stirnseiten im Bereich der Außenkante flächige Ausnehmungen haben, mit deren Hilfe durch den Mediendruck Kräfte erzeugt werden, die den in den Trennfugen zwischen den Rotorscheiben wirkenden Medien- und Federkräften entgegenwirken und somit die Reibung an den zur Gehäusewand zeigenden Stirnflächen auf das zur Abdichtung erforderliche Maß reduzieren. Sealing system of rotary piston machines with a rotor of juxtaposed rotor discs, characterized in that the rotor disks on the housing wall facing end faces in the region of the outer edge have flat recesses, with the help of the media pressure forces are generated, which in the joints between the Counteracting rotor disks acting media and spring forces and thus reduce the friction on the housing wall facing end surfaces to the extent required for sealing.
EP07822696.6A 2006-12-02 2007-11-19 System for sealing the piston of rotary piston machines Not-in-force EP2100009B1 (en)

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DE102006057003A DE102006057003A1 (en) 2006-12-02 2006-12-02 Principle and system for sealing the piston of rotary piston engines
PCT/EP2007/062488 WO2008065017A1 (en) 2006-12-02 2007-11-19 System for sealing the piston of rotary piston machines

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KR (1) KR20090096497A (en)
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BRPI0719694A2 (en) 2013-12-24
EP2450530B1 (en) 2016-03-23
DE102006057003A1 (en) 2008-06-05
EP2450530A1 (en) 2012-05-09
JP4926252B2 (en) 2012-05-09
EP2100009B1 (en) 2016-03-16
CA2671017C (en) 2014-01-21
WO2008065017A1 (en) 2008-06-05
JP2010511822A (en) 2010-04-15
CN101558218A (en) 2009-10-14
CN101558218B (en) 2012-03-21
RU2009125224A (en) 2011-01-10
US20100150762A1 (en) 2010-06-17
RU2463458C2 (en) 2012-10-10
CA2671017A1 (en) 2008-06-05
AU2007326323A1 (en) 2008-06-05
KR20090096497A (en) 2009-09-10
US8920147B2 (en) 2014-12-30
AU2007326323B2 (en) 2013-08-01

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