EP0249178B1 - Internal axis-type rotary-piston machine - Google Patents

Internal axis-type rotary-piston machine Download PDF

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Publication number
EP0249178B1
EP0249178B1 EP87108236A EP87108236A EP0249178B1 EP 0249178 B1 EP0249178 B1 EP 0249178B1 EP 87108236 A EP87108236 A EP 87108236A EP 87108236 A EP87108236 A EP 87108236A EP 0249178 B1 EP0249178 B1 EP 0249178B1
Authority
EP
European Patent Office
Prior art keywords
ring
external rotor
rotation machine
machine according
web
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.)
Expired - Lifetime
Application number
EP87108236A
Other languages
German (de)
French (fr)
Other versions
EP0249178A1 (en
Inventor
Felix Dr. H.C. Wankel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT87108236T priority Critical patent/ATE63610T1/en
Publication of EP0249178A1 publication Critical patent/EP0249178A1/en
Application granted granted Critical
Publication of EP0249178B1 publication Critical patent/EP0249178B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/10—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F01C1/103—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • Y10T29/49234—Rotary or radial engine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19893—Sectional

Definitions

  • the invention relates to an internal-axis rotary lobe machine according to the preamble of patent claim 1.
  • a machine of this type is known for example from DE-HA-34 32 915. It is comparable to the arrangement of a hollow gear and a pinion arranged in it.
  • the parts of the external rotor are usually relatively thin-walled in addition to its control openings in the radial direction and can therefore be bent out by the pressure of the working medium and in particular by centrifugal forces.
  • the entire engaging parts of the external rotor especially when the machine is elongated, are subjected to bending forces.
  • the diameter of the outer rotor can be increased. However, this also leads to an increase in the harmful spaces present in the control openings.
  • the outer rotor diameter is therefore not increased overall, but rather only by ring-like webs which connect the engagement parts of the outer rotor to one another and which are preferably narrow, i.e. like an annular disc.
  • the inside diameter of the Housing shell are brought up to the unexpanded outer diameter of the outer rotor, so that no additional harmful spaces are created.
  • the stiffening web or webs bring about a small reduction in the control cross sections of the external rotor, very high rotational speeds and any axial extension of the rotary piston machine are possible due to the invention.
  • the at least one stiffening web can be an integral part of the outer rotor or can consist of a ring which is freely placed, for example shrunk on.
  • the latter is either designed in a split manner or sleeve-shaped filler pieces are inserted axially into the spaces on both sides of the stiffening web and between the circumference of the outer rotor and the housing shell.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Steroid Compounds (AREA)
  • Toys (AREA)
  • X-Ray Techniques (AREA)
  • Centrifugal Separators (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The engagement parts of the external rotor of a single-rotation machine are interconnected in circumferential direction of the rotor by a ring-like web. This allows high rotational speeds around the single axis of rotation of the external rotor without any increase in the size of dead spaces of the machine.

Description

Die Erfindung betrifft eine innenachsige Drehkolbenmaschine gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to an internal-axis rotary lobe machine according to the preamble of patent claim 1.

Eine Maschine dieser Art ist beispielsweise bekannt durch die DE-HA-34 32 915. Sie ist vergleichbar mit der Anordnung eines Hohlzahnrades und einem in ihm angeordneten Ritzel. Bei diesen Maschinen sind die Teile des Aussenläufers neben seinen Steueröffnungen in radialer Richtung meist verhältnismässig dünnwandig und können somit durch den Druck des Arbeitsmittels und insbesondere durch Fliehkräfte ausgebogen werden. Ausserdem sind die gesamten Eingriffsteile des Aussenläufers, besonders bei langgestreckter Gestaltung der Maschine, Biegekräften ausgesetzt. Um die genannten dünnwandigen Bereiche zu vermeiden, kann zwar der Durchmesser des Aussenläufers vergrössert werden. Dies führt aber auch zu einer Vergrösserung der in den Steueröffnungen vorhandenen schädlichen Räume.A machine of this type is known for example from DE-HA-34 32 915. It is comparable to the arrangement of a hollow gear and a pinion arranged in it. In these machines, the parts of the external rotor are usually relatively thin-walled in addition to its control openings in the radial direction and can therefore be bent out by the pressure of the working medium and in particular by centrifugal forces. In addition, the entire engaging parts of the external rotor, especially when the machine is elongated, are subjected to bending forces. In order to avoid the thin-walled areas mentioned, the diameter of the outer rotor can be increased. However, this also leads to an increase in the harmful spaces present in the control openings.

Um eine Versteifung der fliehkraftbelasteten Eingriffsteile des Aussenläufers ohne Vergrösserung der schädlichen Räume zu erhalten, wird erfindungsgemäss eine Drehkolbenmaschine gemäss dem Patentanspruch 1 vorgeschlagen. Aufgrund der Erfindung wird somit der Aussenläuferdurchmesser nicht gesamthaft, sondern nur durch ringartige, die Eingriffsteile des Aussenläufers miteinander verbindende Stege vergrössert, die vorzugsweise schmal, d.h. ringscheibenartig, ausgeführt sind.To obtain a stiffening of the centrifugal force-engaging parts of the external rotor without enlarging the harmful spaces, a rotary piston machine according to the invention is proposed. On the basis of the invention, the outer rotor diameter is therefore not increased overall, but rather only by ring-like webs which connect the engagement parts of the outer rotor to one another and which are preferably narrow, i.e. like an annular disc.

Neben oder zwischen den Stegen kann der Innendurchmesser des Gehäusemantels bis an den unvergrösserten Aussendurchmesser des Aussenläufers herangeführt werden, so dass keine zusätzlichen schädlichen Räume geschaffen werden. Der oder die Versteifungsstege bewirken zwar eine kleine Verringerung der Steuerquerschnitte des Aussenläufers, jedoch sind aufgrund der Erfindung sehr hohe Drehgeschwindigkeiten und eine beliebige axiale Verlängerung der Drehkolbenmaschine möglich.In addition to or between the webs, the inside diameter of the Housing shell are brought up to the unexpanded outer diameter of the outer rotor, so that no additional harmful spaces are created. Although the stiffening web or webs bring about a small reduction in the control cross sections of the external rotor, very high rotational speeds and any axial extension of the rotary piston machine are possible due to the invention.

Der mindestens eine Versteifungssteg kann fester Bestandteil des Aussenläufers sein oder aus einem frei aufgesetzten, beispielsweise aufgeschrumpften Ring bestehen. Um die Montage des Aussenläufers in dem Gehäusemantel zu ermöglichen, ist dieser entweder geteilt ausgeführt oder es werden hülsenförmige Füllstücke in die beidseitig zu dem Versteifungssteg und zwischen dem Umfang des Aussenläufers und dem Gehäusemantel vorhandenen Räume axial eingeschoben.The at least one stiffening web can be an integral part of the outer rotor or can consist of a ring which is freely placed, for example shrunk on. In order to enable the outer rotor to be mounted in the housing shell, the latter is either designed in a split manner or sleeve-shaped filler pieces are inserted axially into the spaces on both sides of the stiffening web and between the circumference of the outer rotor and the housing shell.

Zum besseren Verständnis der Erfindung wird auf die zeichnerische Darstellung von Ausführungsbeispielen verwiesen.

Abb. 1
zeigt einen Radialquerschnitt einer bekannten innenachsigen Drehkolbenmaschine, mit durch Fliehkraft verbiegungsgefährdeten Stellen v des Aussenläufers a und verhältnismässig kleinen schädlichen Räumen r.
Abb.2
zeigt eine zu Abb.1 vergleichbare Maschine, jedoch mit vergrössertem Durchmesser des Aussenläufers a, so dass die fliehkraftgefährdeten Bereiche verstärkt sind, dafür aber auch die schädlichen Räume r entsprechend erheblich vergrössert sind.
Abb.3
zeigt einen Längsschnitt durch eine erfindungsgemässe Drehkolbenmaschine, bei der der Gehäusemantel g,gʹ quergeteilt ist, damit der Aussenläufer a einen aufgeschrumpften Versteifungssteg s tragen kann.
Abb.4
zeigt eine perspektivische Darstellung des Aussenläufers a ohne seine Endteile e, d.h. seine drei von dem Steg s umschlossenen Eingriffsteile.
Abb.5
zeigt eine Drehkolbenmaschine im Längsschnitt, wobei der Versteifungssteg s einstückig am Aussenläufer angeformt ist und der Gehäusemantel g ungeteilt ist. Beiderseits des Versteifungssteges s sind in das Maschinengehäuse hülsenförmige Füllstücke eingebaut.
Abb.6
zeigt im Längsschnitt eine Drehkolbenmaschine mit mehreren Versteifungsstegen s,sʹ,sʺ, wobei aus der
Abb.7
entsprechend einem zugehörigen Radialschnitt die Längsteilung des Gehäusemantels g,gʹ ersichtlich ist.
For a better understanding of the invention, reference is made to the graphic representation of exemplary embodiments.
Fig. 1
shows a radial cross section of a known inner-axis rotary lobe machine, with points v of the outer rotor a which are at risk of bending due to centrifugal force and relatively small harmful spaces r.
Fig.2
shows a machine comparable to Fig.1, but with an enlarged diameter of the outer rotor a, so that the areas at risk of centrifugal force are reinforced, but the harmful spaces r are also considerably enlarged accordingly.
Fig.3
shows a longitudinal section through a rotary piston machine according to the invention, in which the housing jacket g, gʹ is cross-divided so that the outer rotor a can carry a shrunk-on stiffening web s.
Fig.4
shows a perspective view of the outer rotor a without its end parts e, ie its three engaging parts enclosed by the web s.
Fig.5
shows a rotary piston machine in longitudinal section, wherein the stiffening web s is integrally formed on the outer rotor and the housing shell g is undivided. On both sides of the stiffening web s, sleeve-shaped filler pieces are installed in the machine housing.
Fig.6
shows in longitudinal section a rotary piston machine with several stiffening webs s, sʹ, sʺ, wherein from the
Fig.7
according to an associated radial section, the longitudinal division of the housing shell g, gʹ can be seen.

Der grundsätzliche Aufbau und die Funktionsweise der in den genannten Abbildungen dargestellten Drehkolbenmaschinen sind an sich durch die DE-PS 34 32 915 des gleichen Anmelders bekannt und für die vorliegende Erfindung nur von indirekter Bedeutung, so dass sich eine detaillierte Beschreibung erübrigt.The basic structure and mode of operation of the rotary lobe machines shown in the figures mentioned are known per se from DE-PS 34 32 915 by the same applicant and are only of indirect importance for the present invention, so that a detailed description is unnecessary.

Claims (9)

  1. Internally axed single-rotation machine, with an external rotor and an internal rotor, which are surrounded by a common casing being provided at the periphery thereof with input and output openings in such a way that for sealing between the input and output side of the single-rotation machine circumferential surfaces of the external and of the internal rotor move along inner surfaces of the casing, whereby openings of the external rotor (a) control the charge change of working spaces provided between the rotors and whereby end parts (e) connecting the engaging parts of the external rotor limit engaging spaces of the external rotor in axial direction, characterized in that the engaging parts of the external rotor are surrounded by a ring-like web (s,s',s") which is positioned between the end parts (e) of the external rotor, which projects over the rotor circumference and which in axial direction is enclosed between the end parts of the casing jacket.
  2. Single-rotation machine according to Claim 1, characterized in that the casing jacket is divided transversely (fig.3) or longitudinally (fig.7).
  3. Single-rotation machine according to claim 1, characterized in that sleeve-like fillers (f,f') are the parts of the casing jacket which enclose the ring-like web (s).
  4. Single-rotation machine according to one of the claims 1 to 3, characterized in that the external rotor (a) carries several ring-like webs (s,s',s"), which are enclosed by fillers, whose external diameter is larger than that of the ring-like webs.
  5. Single-rotation machine according to one of the claims 1 to 4, characterized in that the at least one ring-like web (s,s', s") spans the external rotor (a).
  6. Single-rotation machine according to one of the claims 1 to 4, characterized in that the at least one ring-like web (s,s',s") is constructed as a fixed component of the external rotor (a).
  7. Single-rotation machine according to one of the claims 1 to 4, characterized in that the at least one ring-like web (s,s',s") is cast in one piece with the engagement parts of the external rotor.
  8. Single-rotation machine according to one of the claims 1 to 7, characterized in that the at least one ring-like web (s,s',s") has a radially oriented elongated cross-section.
  9. Single-rotation machine according to claim 8, characterized in that the at least one ring-like web (s,s',s") has a rectangular cross-section.
EP87108236A 1986-06-13 1987-06-06 Internal axis-type rotary-piston machine Expired - Lifetime EP0249178B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87108236T ATE63610T1 (en) 1986-06-13 1987-06-06 INBOARD ROTARY LOBE MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2405/86A CH669975A5 (en) 1986-06-13 1986-06-13
CH2405/86 1986-06-13

Publications (2)

Publication Number Publication Date
EP0249178A1 EP0249178A1 (en) 1987-12-16
EP0249178B1 true EP0249178B1 (en) 1991-05-15

Family

ID=4233022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87108236A Expired - Lifetime EP0249178B1 (en) 1986-06-13 1987-06-06 Internal axis-type rotary-piston machine

Country Status (7)

Country Link
US (1) US4793781A (en)
EP (1) EP0249178B1 (en)
JP (1) JPS62298601A (en)
AT (1) ATE63610T1 (en)
CH (1) CH669975A5 (en)
DE (1) DE3770049D1 (en)
ES (1) ES2023143B3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911540C1 (en) * 1989-04-08 1990-03-29 Aktiengesellschaft Kuehnle, Kopp & Kausch, 6710 Frankenthal, De
JP2007524031A (en) * 2004-01-23 2007-08-23 スターローター コーポレーション Gerotor device for quasi-isothermal Brayton cycle engine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126833A (en) * 1964-03-31 Figures
US724665A (en) * 1903-01-31 1903-04-07 Cooley Epicycloidal Engine Dev Company Rotary fluid-motor.
GB354812A (en) * 1930-05-10 1931-08-10 Demag Ag Improvements relating to rotary engines of the rotating drum and radially sliding piston vane type
GB394985A (en) * 1932-01-05 1933-07-05 Hugo Grasse Improvements in rotary pumps, blowers and motors, and in machines for use in producing the rotors thereof
US2458958A (en) * 1947-04-30 1949-01-11 Gulf Research Development Co Internal gear pump and compressor
US2740386A (en) * 1952-08-16 1956-04-03 Crendall Loid Rotary internal combustion engine
FR1299586A (en) * 1961-06-10 1962-07-27 Sedis Transmissions Mec Toothed pinion
FR1504705A (en) * 1966-10-24 1967-12-08 Volumetric system with a pair of conjugated gears
US4316439A (en) * 1969-03-10 1982-02-23 Tyree Joe W Rotary engine with internal or external pressure cycle
CH664423A5 (en) * 1984-06-12 1988-02-29 Wankel Felix INNER AXIS ROTARY PISTON.

Also Published As

Publication number Publication date
ATE63610T1 (en) 1991-06-15
ES2023143B3 (en) 1992-01-01
CH669975A5 (en) 1989-04-28
DE3770049D1 (en) 1991-06-20
US4793781A (en) 1988-12-27
EP0249178A1 (en) 1987-12-16
JPS62298601A (en) 1987-12-25

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