EP0834001B1 - Positive displacement machine comprising a rotary piston - Google Patents

Positive displacement machine comprising a rotary piston Download PDF

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Publication number
EP0834001B1
EP0834001B1 EP95921858A EP95921858A EP0834001B1 EP 0834001 B1 EP0834001 B1 EP 0834001B1 EP 95921858 A EP95921858 A EP 95921858A EP 95921858 A EP95921858 A EP 95921858A EP 0834001 B1 EP0834001 B1 EP 0834001B1
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EP
European Patent Office
Prior art keywords
piston
compression chamber
rotary piston
machine
chamber
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
EP95921858A
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German (de)
French (fr)
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EP0834001A1 (en
Inventor
Willy Del Barba
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Individual
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Individual
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Publication date
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Publication of EP0834001A1 publication Critical patent/EP0834001A1/en
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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
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps

Definitions

  • the present invention relates to a rotary machine rotary piston.
  • USA 2 965 039 describes a rotary volumetric machine for liquid fluid comprising the features of the preamble of claim 1.
  • the compression chamber is rotated by the piston; there is therefore contact between the compression chamber and the piston; which implies friction and if necessary the obligation to lubricate the machine.
  • the present invention provides a rotary machine according to the features of claim 1.
  • It consists of a cylindrical piston with an axis of eccentric rotation (3) moving radially inside a compression chamber (2) whose internal volume is composed of two half-cylinders at each end of a volume rectangular parallelepiped; itself in half rotation the speed of rotation of the piston.
  • the movement takes place without mechanical contact between the piston and compression chamber.
  • Synchronization of the piston and the compression chamber is ensured by a gear train (4) located outside of the compression chamber.
  • the piston, compression chamber, train assembly of gears is contained in a housing (1) provided at one end of two lights (5).
  • the lights are alternately open or closed in function of the relative position of the piston relative to the compression chamber.
  • the machine can consist of one or more stages on the same principle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Valveless single or multistage reversible positive displacement machine for fluids comprising a rotary piston. The invention concerns a rotary piston assembly with an eccentric rotational axis (3) moving radially within a compression chamber (2), the inner volume being composed of two half-cylinders at each end of a parallelipiped rectangle rotating at half the rotational speed of the piston. There is no mechanical contact, between the rotary piston and the combustion chamber. Synchronisation is provided by means of gear drive (5). The piston, compression chamber and drive assembly is enclosed in a housing (1) with, at one end, two ports (5) for fluid intake and discharge alternately opening or closing according to the position of the piston in relation to the chamber. The machine can be used as a fluid compressor, motor, or fluid pump.

Description

La présente invention concerne une machine tournante à piston rotatif.The present invention relates to a rotary machine rotary piston.

La machine peut être utilisée comme :

  • Compresseur volumétrique de fluide liquide ou gazeux
  • Moteur hydraulique ou pneumatique
  • Pompe volumétrique de fluide liquide ou gazeux
The machine can be used as:
  • Volumetric compressor for liquid or gaseous fluid
  • Hydraulic or pneumatic motor
  • Volumetric pump of liquid or gaseous fluid

La USA 2 965 039 décrit une machine tournante volumétrique pour fluide liquide comportant les caracténstiques du préambule de la revendication 1.USA 2 965 039 describes a rotary volumetric machine for liquid fluid comprising the features of the preamble of claim 1.

Selon ce document la chambre de compression est entraínée en rotation par le piston ; il y a donc contact entre la chambre de compression et le piston ; ce qui implique des frottements et le cas échéant l'obligation de lubrifier la machine.According to this document the compression chamber is rotated by the piston; there is therefore contact between the compression chamber and the piston; which implies friction and if necessary the obligation to lubricate the machine.

Pour remédier à ce problème. la présente invention propose une machine tournante selon les caracténstiques de la revendication 1.To fix this problem. the present invention provides a rotary machine according to the features of claim 1.

Certes, dans le document FR-A-1 556 302, le synchronisme entre le piston et la chambre de compression est assuré par un train d'engrenage situé à l'extérieur de la chambre de comrpession et il n'y a pas de contact mécanique entre le piston et la chambre de compression mais ce dispositif implique un joint d'étanchéité en deux points fixes de la chambre de compression. De tels points fixes n'existent pas avec une forme comprenant deux demi-cylindres parallèlipipédique.Admittedly, in document FR-A-1 556 302, the synchronism between the piston and the compression chamber is provided by a gear train located outside of the comrpession chamber and there is no mechanical contact between the piston and the compression chamber but this device involves a seal in two fixed points of the compression chamber. Such fixed points do not exist with a shape comprising two parallelipipedic half-cylinders.

Elle est constituée d'un piston cylindrique à axe de rotation excentrique (3) se déplaçant radialement à l'intérieur d'une chambre de compression (2) dont le volume intérieur est composé de deux demi-cylindres à chaque extrémité d'un volume parallèlipipédique rectangle ; elle-même en rotation à la moitié de la vitesse de rotation du piston.It consists of a cylindrical piston with an axis of eccentric rotation (3) moving radially inside a compression chamber (2) whose internal volume is composed of two half-cylinders at each end of a volume rectangular parallelepiped; itself in half rotation the speed of rotation of the piston.

Le déplacement s'effectue sans contact mécanique entre le piston et la chambre de compression.The movement takes place without mechanical contact between the piston and compression chamber.

La synchronisation du piston et de la chambre de compression est assurée par un train d'engrenages (4) situé à l'extérieur de la chambre de compression.Synchronization of the piston and the compression chamber is ensured by a gear train (4) located outside of the compression chamber.

L'ensemble piston, chambre de compression, train d'engrenages est contenu dans un carter (1) muni à une extrémité de deux lumières (5).The piston, compression chamber, train assembly of gears is contained in a housing (1) provided at one end of two lights (5).

Les lumières sont alternativement ouvertes ou fermées en fonction de la position relative du piston par rapport à la chambre de compression.The lights are alternately open or closed in function of the relative position of the piston relative to the compression chamber.

La machine peut être constituée d'un ou plusieurs étages sur le même principe.The machine can consist of one or more stages on the same principle.

De cette invention découlent les principaux avantages suivants :

  • Déplacement du ou des pistons dans tout le volume de la chambre permettant d'obtenir un rapport de compression important pour un volume et un poids faible par rapport à la puissance.
  • Sans contact mécanique entre le piston et la chambre de compression ce qui permet un fonctionnement sans lubrification des parties.
  • Peu de pièces
  • Usinage simple
  • Simplicité de montage et de mise en service
  • Maintenance réduite en raison de la faible vitesse relative entre le ou les pistons et la chambre de compression, l'absence de clapets, d'embiellage et de circuit de lubrification.
The main advantages of this invention are as follows:
  • Displacement of the piston (s) throughout the volume of the chamber making it possible to obtain a high compression ratio for a volume and a low weight compared to the power.
  • Without mechanical contact between the piston and the compression chamber which allows operation without lubrication of the parts.
  • Few parts
  • Simple machining
  • Simple assembly and commissioning
  • Reduced maintenance due to the low relative speed between the piston (s) and the compression chamber, the absence of valves, crankshaft and lubrication circuit.

Claims (4)

  1. Rotating volumetric machine for liquid or gaseous fluids, pump, compressor, motor, consisting of a cylindrical piston with an eccentric rotational axis (3) which moves radially inelde a single or two-stage compression chamber (2) whose internal volume consists of two half-cylinders at each end of a rectangular parallelepipedal volume ; which itself rotates at half the rotational speed of the piston, characterised by the fact that the synchronism between the piston (3) and the compression chamber (2) is provided by a set of gears (4) located outside the compression chamber to ensure a displacement of these parts without any mechanical contact between the piston (3) and the compression chamber (2).
  2. Rotary machine as per claim (1) characterised in that the assembly of the piston (3), compression chamber (2), set of gears (4) is contained in a casing (1) incorporating two openings (5), alternatively open or closed according to the relative position of the piston (3) in relation to the compression chamber, (2)
  3. Rotary machine as per claim (1) or (2), characterised by the fact the absence of mechanical contact between the piston (3) and the compression chamber (2) means that there is no need for lubrication between these two parts.
  4. Rotary machine as per claim (2) or (3) characterised by the fact that the two openings (5) located at one end of the casing (1) enable the fluid to be admitted and exhausted without valve or linkage.
EP95921858A 1994-06-01 1995-05-30 Positive displacement machine comprising a rotary piston Expired - Lifetime EP0834001B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9406710 1994-06-01
FR9406710A FR2720788B1 (en) 1994-06-01 1994-06-01 Reversible volumetric machine with rotary piston (s) without valve for use as engine fluid compressor and fluid pump.
PCT/FR1995/000699 WO1995033126A1 (en) 1994-06-01 1995-05-30 Positive displacement machine comprising a rotary piston

Publications (2)

Publication Number Publication Date
EP0834001A1 EP0834001A1 (en) 1998-04-08
EP0834001B1 true EP0834001B1 (en) 1999-03-17

Family

ID=9463771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95921858A Expired - Lifetime EP0834001B1 (en) 1994-06-01 1995-05-30 Positive displacement machine comprising a rotary piston

Country Status (5)

Country Link
EP (1) EP0834001B1 (en)
AT (1) ATE177818T1 (en)
DE (1) DE69508440D1 (en)
FR (1) FR2720788B1 (en)
WO (1) WO1995033126A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7186101B2 (en) 1998-07-31 2007-03-06 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle Engine
US6427453B1 (en) 1998-07-31 2002-08-06 The Texas A&M University System Vapor-compression evaporative air conditioning systems and components
US7726959B2 (en) 1998-07-31 2010-06-01 The Texas A&M University Gerotor apparatus for a quasi-isothermal Brayton cycle engine
AU5242599A (en) 1998-07-31 2000-02-21 The Texas A & M University System Quasi-isothermal brayton cycle engine
EP1422378B1 (en) * 1998-07-31 2005-09-21 The Texas A & M University System Gerotor compressor and gerotor expander
US7663283B2 (en) 2003-02-05 2010-02-16 The Texas A & M University System Electric machine having a high-torque switched reluctance motor
EP1711685B1 (en) 2004-01-23 2015-09-16 Starrotor Corporation Gerotor apparatus for a quasi-isothermal brayton cycle engine
WO2006047241A2 (en) 2004-10-22 2006-05-04 The Texas A & M University System Gerotor apparatus for a quasi-isothermal brayton cycle engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748348A (en) * 1902-06-16 1903-12-29 Cooley Epicycloidal Engine Dev Company Rotary fluid-engine.
US2965039A (en) * 1957-03-31 1960-12-20 Morita Yoshinori Gear pump
FR1278136A (en) * 1960-10-27 1961-12-08 Volumetric machine with meshing capacities
FR1556302A (en) * 1967-12-13 1969-02-07
CH667492A5 (en) * 1985-08-31 1988-10-14 Wankel Felix INNER AXIS ROTARY PISTON.

Also Published As

Publication number Publication date
DE69508440D1 (en) 1999-04-22
WO1995033126A1 (en) 1995-12-07
ATE177818T1 (en) 1999-04-15
FR2720788A1 (en) 1995-12-08
EP0834001A1 (en) 1998-04-08
FR2720788B1 (en) 1996-09-20

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