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WO1991005940A1 - Pompe ou moteur - Google Patents

Pompe ou moteur Download PDF

Info

Publication number
WO1991005940A1
WO1991005940A1 PCT/GB1990/001570 GB9001570W WO9105940A1 WO 1991005940 A1 WO1991005940 A1 WO 1991005940A1 GB 9001570 W GB9001570 W GB 9001570W WO 9105940 A1 WO9105940 A1 WO 9105940A1
Authority
WO
WIPO (PCT)
Prior art keywords
members
positive displacement
displacement device
rotor
shaft
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.)
Ceased
Application number
PCT/GB1990/001570
Other languages
English (en)
Inventor
Kevin Richards
Michael Paul Muller
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
Publication of WO1991005940A1 publication Critical patent/WO1991005940A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F01C9/00—Oscillating-piston machines or engines
    • F01C9/007—Oscillating-piston machines or engines the points of the moving element describing approximately an alternating movement in axial direction with respect to the other element

Definitions

  • THIS invention relates to a positive displacement device in the form of a pump or motor.
  • pump or motor is intended to embrace motors such as internal combustion motors, hydraulic or pneumatic motors, pumps and compressors.
  • a positive displacement device comprises first and second members presenting opposing, undulating surfaces defined by alternating lobes and valleys which cooperate with one another to define variable volume chambers when the members move relative to one another in a first direction and reciprocate relative to one another in second direction transverse to the first direction.
  • the device comprises two first members which present undulating surfaces that are spaced apart from and face one another and a single second member which is located between the undulating surfaces of the first members, the second member presenting undulating surfaces on opposite sides thereof which oppose the undulating surfaces of the first members so that variable volume chambers are defined by the lobes and valleys of the members on both sides of the second member.
  • the device may serve as a pump or motor.
  • means are provided for supplying pressurised fluid to the chambers to cause them to expand with corresponding movement of the second member relative to the first members in the first direction and reciprocation of the second member relative to the first members in the second direction.
  • the first members may be stationary stators and the second member may be shaft-mounted rotor which is arranged to rotate between the stators on the shaft and to reciprocate in the axial direction of the shaft relative to the stators.
  • Figure 1 shows a diagrammatic, sectional side view of a device according to the invention
  • Figure 2 shows a perspective view of the rotor used in the device of Figure
  • Figure 3(a) to 3(c) shows a partial, cross-sectional developed view of the rotor and stators of the Figure 1 device at various stages during operation;
  • Figure 4 shows a cross-sectional view at the line 4-4 in Figure 2;
  • Figure 5 shows a view similar to Figure 3(c) but with the device used in another application.
  • the numeral 10 indicates the output shaft of an internal "combustion engine.
  • the shaft has splines 12 which support a rotor 14 in a rotationally fast manner and which permit axial movement of the rotor 14 on the shaft.
  • the rotor has annular surfaces 16 on opposite sides thereof
  • SUBSTITUTE SHEET which are of undulating profile and which are constituted by alternating lobes and valleys 18 and 20 respectively. It will be noted that there are four lobes and four valleys on each surface 16 and that the lobes on one surface 16 are opposite the valleys on the opposite surfaces 16, i.e. the lobes are 45 " out of phase on the two surfaces 16.
  • the rotor 14 is located between the two stators 22 which have inwardly directed, annular surfaces 23 that are likewise constituted by alternating lobes and valleys 24 and 26 respectively.
  • Each surface 23 of the stators has four such lobes and valleys.
  • the rotor surfaces 16 are provided with spaced seal elements 26 which extend across the faces of the lobes 18.
  • the seal elements are biased outwardly along a line of action by means of springs 28 so as to form good seals with the surfaces 23 of the stators at the appropriate stages during movement of the rotor relative to the stators. It will be appreciated that the angle of this line of action relative to the opposing face will vary throughout the cycle. However, this angle will not vary to the extent found in the tip seal of a Wankel engine.
  • the stators themselves are mounted in a stationary manner between end members 30 ( Figure 4) forming part of the engine housing and inner and outer side seals 32 are provided at the radially inner and outer edges of the rotor surfaces 16 to seal against the housing members 30.
  • FIG. 3(a) to 3(c) there is shown in each case a partially developed view illustrating the interaction of the rotor and stators.
  • the stator lobes have inlets 34 and exhaust ports 36 ( Figure 3(c)) which open into the space between them and spark generators, for example in the form of spark plugs 38, which are arranged to generate sparks, under the control of an external timing apparatus, in the space between the stators.
  • a fuel/air mixture supplied to the relevant inlet 34 ( Figure 3(c)) is drawn into the chamber.
  • the relevant spark generator is energised to generate a spark which ignites the fuel/air mixture.
  • the expanding gases drive the rotor further in the direction of the arrow 40.
  • the relevant rotor lobe uncovers the relevant exhaust port 36 and the gases are all exhausted.
  • the exhaust port 36 is closed and the inlet port 34 is uncovered again as the rotor moves further in the direction of the arrow 40, and the process repeats itself.
  • each spark plug will ignite four times for each revolution of ttie shaft 10.
  • the spark plugs ignite alternately in pairs for every 45 " of shaft rotation.
  • SUBSTITUTE SHEET stroke piston-and-cylinder internal combustion engine having four cylinders only has two power strokes per revolution of the crankshaft, i.e. one power stroke per 180° of crankshaft revolution.
  • a four-stroke, six cylinder engine will have three power strokes per shaft revolution, i.e. one power stroke per 120 ' of shaft revolution. Accordingly, it is believed that the rotary drive which is obtained using the device of the invention will lead to a smoother power output.
  • the surfaces 16 and 23 of the rotor and stators may be positioned a substantial distance from the axis of the shaft 10 and certainly further from the axis than the cranks of a conventional crankshaft are from the axis of the crankshaft.
  • the point of application of the driving force and the resulting turning moment and torque output can be greater per unit driving force than with a conventional piston-and-cylinder and crankshaft drive.
  • the side seals 32 may be floating seals which are forced outwardly against the housing members 30 when the relevant chambers 42, 44 are under compression by differential pressures, i.e in Figure 4, the pressure of compressed fluid acting on the surfaces 48 of the seals 32 will urge them outwardly against the members 30.
  • the seals 32 could be spring- loaded to act outwardly on the surfaces of the members 30.
  • the rotor could be a stationary member and the stators could be the rotating members, in which case the stators would be carried by the shaft.
  • the principles of the invention can be applied to straight line or other motion.
  • the "rotor” and “stators” could merely be straight lengths with appropriate undulating surfaces mating with one another and with suitable housing members sealing the edges of the members.
  • the device of the invention could serve both as an engine as described above or as a pump or compressor.
  • the fluid to be pumped or compressed would be drawn into the various chambers during the expansion of those chambers and then exhausted under pressure as the chamber volume decreases.
  • the device could operate as a diesel engine, with the chambers serving to compress the diesel mixture sufficiently for spontaneous ignition thereof.
  • the device of the invention could be used as an hydraulic motor.
  • Figure 5 shows a similar diagram to the One shown in Figure 3(c).
  • Inlet and outlet ports ' are arranged in a similar fashion to the ports used in the application of the device as an internal combustion engine.
  • the present application of the device as an hydraulic motor will be described with
  • pressurised fluid fed in at 50 serves to drive the rotor in the direction of rotation indicated by arrow A, which opens up a chamber between surfaces 58 and 60.
  • the rotor is being displaced in the axial direction of the shaft 26 towards outlet port 54. Consequently, chamber 62 is compressed to exhaust its contents of fluid out through outlet port 54.
  • the inlet port 50 and outlet port 54 work as a pair.
  • pressurised fluid is fed in through port 50, so exhaust fluid exits through port 54.
  • the process is exactly the same for ports 52 and 56, although of course the admission of pressurised fluid through port 52 will occur 45 ' earlier or later in the overall cycle of the device than the admission of pressurised fluid through port 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)

Abstract

L'invention se rapporte à un dispositif rotatif de type volumétrique, qui peut servir de pompe ou de moteur et qui comprend un rotor (14) et au moins un stator (22). Le stator et le rotor comportent des surfaces ondulées opposées (16 et 23) présentant en alternance des creux (20) et des bosses (18) qui coopèrent entre eux pour former des chambres de volume variable, lorsque le rotor et le stator se déplacent l'un par rapport à l'autre dans une première direction et effectuent un mouvement alternatif l'un par rapport à l'autre dans une seconde direction transversalement à la première direction. Le rotor peut effectuer une rotation par rapport au stator et un mouvement alternatif par rapport au stator dans une direction transversale à sa direction de rotation. Le rotor peut être placé en prise avec un arbre (10) par des canelures, de façon soit à être entraîné en rotation par l'arbre soit à entraîner la rotation de l'arbre, pendant que le rotor effectue un mouvement de va-et-vient sur l'arbre.
PCT/GB1990/001570 1989-10-12 1990-10-11 Pompe ou moteur Ceased WO1991005940A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8922993.4 1989-10-12
GB898922993A GB8922993D0 (en) 1989-10-12 1989-10-12 Pump or motor

Publications (1)

Publication Number Publication Date
WO1991005940A1 true WO1991005940A1 (fr) 1991-05-02

Family

ID=10664459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001570 Ceased WO1991005940A1 (fr) 1989-10-12 1990-10-11 Pompe ou moteur

Country Status (2)

Country Link
GB (1) GB8922993D0 (fr)
WO (1) WO1991005940A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003257A1 (fr) * 1991-08-06 1993-02-18 Goodman William A Moteur rotatif
US5674059A (en) * 1994-01-24 1997-10-07 Bucur; Alexandru A. Reciprocating variable displacement rotary vane machine
EP0843074A1 (fr) * 1996-11-19 1998-05-20 Yukio Kajino Machine à disques rotatifs
WO2001033047A1 (fr) * 1999-11-04 2001-05-10 Peter Schnabl Machine a piston rotatif
WO2002090775A1 (fr) * 2001-05-09 2002-11-14 Peter Schnabl Pompe a piston rotatif
RU2243414C1 (ru) * 2003-06-16 2004-12-27 Гарипов Талгат Хайдарович Осевой ротационный компрессор
WO2009010796A3 (fr) * 2007-07-16 2009-11-26 Kenneth Mcdonald Moteur
EP2775094A1 (fr) * 2013-03-04 2014-09-10 Wiebe Feije Pronker Moteur à combustion interne à piston rotatif et axial

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896590A (en) * 1957-04-05 1959-07-28 Garrett Corp Fluid motor
US3667876A (en) * 1970-12-21 1972-06-06 Michael David Boyd Rotary fluid flow machines
GB2075122A (en) * 1980-04-14 1981-11-11 Jayasooriya L Rotary positive-displacement fluid-machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896590A (en) * 1957-04-05 1959-07-28 Garrett Corp Fluid motor
US3667876A (en) * 1970-12-21 1972-06-06 Michael David Boyd Rotary fluid flow machines
GB2075122A (en) * 1980-04-14 1981-11-11 Jayasooriya L Rotary positive-displacement fluid-machines

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003257A1 (fr) * 1991-08-06 1993-02-18 Goodman William A Moteur rotatif
AU669323B2 (en) * 1991-08-06 1996-06-06 William A. Goodman Circular rotary engine
US5674059A (en) * 1994-01-24 1997-10-07 Bucur; Alexandru A. Reciprocating variable displacement rotary vane machine
EP0843074A1 (fr) * 1996-11-19 1998-05-20 Yukio Kajino Machine à disques rotatifs
WO2001033047A1 (fr) * 1999-11-04 2001-05-10 Peter Schnabl Machine a piston rotatif
JP2003514163A (ja) * 1999-11-04 2003-04-15 シュナブル，ペーター ロータリピストン機械
US6729862B1 (en) 1999-11-04 2004-05-04 Peter Schnabl Rotary piston machine
WO2002090775A1 (fr) * 2001-05-09 2002-11-14 Peter Schnabl Pompe a piston rotatif
RU2243414C1 (ru) * 2003-06-16 2004-12-27 Гарипов Талгат Хайдарович Осевой ротационный компрессор
WO2009010796A3 (fr) * 2007-07-16 2009-11-26 Kenneth Mcdonald Moteur
EP2775094A1 (fr) * 2013-03-04 2014-09-10 Wiebe Feije Pronker Moteur à combustion interne à piston rotatif et axial

Also Published As

Publication number Publication date
GB8922993D0 (en) 1989-11-29

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