EP1226338B1 - Drehkolbenmaschine - Google Patents

Drehkolbenmaschine Download PDF

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Publication number
EP1226338B1
EP1226338B1 EP00974505A EP00974505A EP1226338B1 EP 1226338 B1 EP1226338 B1 EP 1226338B1 EP 00974505 A EP00974505 A EP 00974505A EP 00974505 A EP00974505 A EP 00974505A EP 1226338 B1 EP1226338 B1 EP 1226338B1
Authority
EP
European Patent Office
Prior art keywords
piston
annular space
machine according
rotary piston
housing
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
EP00974505A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1226338A1 (de
Inventor
Peter Schnabl
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1226338A1 publication Critical patent/EP1226338A1/de
Application granted granted Critical
Publication of EP1226338B1 publication Critical patent/EP1226338B1/de
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
    • 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

  • the invention relates to a rotary piston machine according to the preamble of claim 1.
  • a rotary piston machine of the aforementioned type is known, for example, from WO-91/05940.
  • the rotary piston machine described therein which can be used as a pump, as an internal combustion engine or hydraulic motor, the supply and the discharge of the medium to or from the working spaces between the rotor and the stators via openings formed in the Statorwellen lake.
  • radially directed sealing strips are mounted in the rotor shaft surface and are tensioned by springs against the respective stator shaft surface.
  • the invention has for its object to provide a rotary piston engine of the type mentioned, which is simple in construction and in which the inlet and outlet ports for the working fluid can be controlled in a simple manner.
  • the rotary piston engine according to the invention can be operated as a pump or, provided that the wave surfaces of the annular space and the annular piston with at least two wave crests and troughs on 360 ° of the circumference, are also operated as a motor.
  • the machine will be designed so that the housing is fixed and the piston rotates with the shaft.
  • the opposite arrangement is possible in which the housing rotates relative to the non-rotating piston.
  • the piston can be axially displaceably mounted on the shaft or be rigidly connected to the shaft, which in turn is mounted axially displaceable in the housing.
  • the working space of the rotary piston machine is formed by the variable cavities between the mutually sliding end surfaces of the annular space and the annular piston.
  • the respective cavity increases or decreases both by the rotation and the axial stroke movement of the piston relative to the housing.
  • the inlet opening and the outlet opening can be arranged in the radially outer or radially inner shell or boundary surface of the annular space so that they are cyclically released by the piston wall and closed again to suck in the case of a pump, for example, a working fluid and expel again or in the case an engine to draw in a fuel mixture, to compress and then expel the combustion gases again.
  • the inlet opening and the outlet opening are each arranged so that one of the openings in the circumferential direction before and the other is behind a wave crest of the end face of the annular space.
  • an inlet opening and an outlet opening are provided on the circumference of 360 °.
  • the rotary piston engine as Pump are preferably provided in each case two inlet openings and two outlet openings per end face of the piston.
  • One of the end surfaces may be at least approximately sinusoidal.
  • the other is preferably chosen so that as uniform as possible axial movement of the piston is achieved during a revolution and no jerky or extreme accelerations of the piston occur in the axial direction.
  • the piston is biased, for example by a spring in the axial direction so that its end face always bears against the end face of the associated annular space.
  • the force with which the surfaces are pressed against one another can also be regulated by the fluid pressure in the annular space.
  • a groove is formed in a lateral surface of the piston or the annular space, in which engages a with the other part (annular space, piston) associated guide element, wherein the course of the groove in the circumferential direction corresponds to the waveform of the end surface of the annular space.
  • annular space / annular piston arrangements of the aforementioned type are arranged coaxially with each other so that the two pistons arranged on the same shaft move together between the end surfaces of the two annular spaces.
  • the two pistons can be combined to form a one-piece double piston.
  • the two end surfaces of the cavity or the two annular spaces united with each other are arranged to each other that the maxima and minima of their wave surfaces each lie on the same generatrix of the cylindrical surface of the cavity.
  • the rotary piston machine shown in Figures 1 and 2 comprises a cylindrical housing 10 and a formed in the form of a tubular section annular piston 12, which in an annular cavity 14 of the cylindrical Housing 10 is rotatably guided and axially displaceable.
  • the piston is via a radial bottom, which is indicated by dashed lines in Figure 1 and designated 16 or non-rotatably via radial spokes with a shaft 18, but axially on the shaft 18 slidably connected, which passes through the housing 10.
  • Such an axial displacement enabling rotationally fixed connection can be effected for example via a spline, as shown in Figure 4.
  • the annular space 14 has an annular end surface 20 which may have a rectilinear or curved cross-section and which extends in a wave-like manner in the circumferential direction with shaft amplitude directed parallel to the axis.
  • the wavy line is approximately sinusoidal and, in the illustrated example, has two peaks or peaks 22 and two wave troughs or minima 24.
  • the end face 20 of the annular space 14 facing end or end surface 26 of the annular piston 12 is also formed wave-shaped, as can be seen in Figure 1.
  • This end face also has two maxima or wave peaks 28 and two wave troughs 30 (FIGS. 5 to 10).
  • this wavy line is designed so that the measured in the circumferential direction half-width of a wave crest, i. the width of the wave crest in the axial center between a wave minimum and a wave maximum is less than the half width of a wave trough.
  • the arrangement could also be reversed in that the end face 26 of the ring piston is sinusoidal and the end face 20 of the annulus 14 has narrower peaks and wider troughs.
  • one of the inlet and outlet channels 32 can also be seen in the housing 10, which terminates at the inner boundary wall 15 of the annular space 14 and serves for supplying or discharging a working fluid to the annular space 14, as shown in FIGS. 5 to 16 will be explained in more detail.
  • the piston 12 is tensioned by a coaxial with the shaft 18 arranged helical spring 34 against the end surface 20 of the annular space 14.
  • a plate spring can be used, which can also serve to connect the piston rotation with the shaft. With the diaphragm spring, the axial length is shortened.
  • the arrangement of the end surfaces 20 of the annular spaces 14 is selected so that the maxima and minima of the two end surfaces 20 are each on a common generatrix of the cylindrical annular spaces 14, as shown in FIGS. 5 to 16.
  • the end faces 26 of the double piston 12 are shaped so that the maximum or crest 28 of one end face with a minimum or the trough 30 of the opposite end face is common to a generatrix of the cylindrical ring piston 12.
  • 33 designates a guide groove formed in the radially outer wall of the annular space 14 into which a pin 35 fastened to the piston 12 engages.
  • the guide groove follows in the circumferential direction of the waveform of the end surface 20 and thus controls the translational movement of the piston 12, without the end faces 20 and 26 touch. This solution is only optional.
  • Figure 4a shows yet another way to reduce the sliding friction between the end surfaces 20 and 26 and thus the wear of these surfaces.
  • a roller 37 is rotatably mounted so that it can roll on the end surface 20 of the annular space 14.
  • FIGS. 5 to 10 relate to a rotary piston engine operated as a motor of the type described in FIGS. 3 and 4, the functional explanations of which also apply to the machine according to FIGS. 1 and 2.
  • an inlet opening 36 and an outlet opening 38 are each provided on a circumference of 360 ° in such a way that relative to the pointing in the direction of arrow A circumferential direction of the piston 12, the outlet opening 38 in front of a wave crest 22 and the inlet opening 36 to the wave crest 22 is located.
  • the shape of the inlet opening 36 and the outlet opening 38 is usually not circular in practice but is depending on the intended use of Rotary engine and also designed in the manner of the medium flowing through, in order to achieve optimum control of the medium flow.
  • FIG. 5 shows the piston 12 at top dead center.
  • four separate cavities are formed between the upper end surface 20 of the annular space 14 and the upper end surface 26 of the piston 12.
  • the lying between 90 ° and 180 ° cavity contains a maximum compressed mixture at the time of ignition. From the lying between 180 ° and 270 ° cavity, the combustion gases were ejected.
  • the outlet opening 38 has been closed.
  • the inlet opening 36 is gradually opened, so that in the lying between 270 ° and 360 ° cavity mixture is sucked.
  • the combustion space measured in the direction of rotation between 270 ° and 90 ° has reached its maximum extent.
  • the outlet opening 38 is open.
  • the piston 12 is located at its bottom dead center with respect to the lower end surface 20 and the exhaust of the combustion gases from the combustion chamber begins. In the second lying between 90 ° and 270 ° cavity mixture was sucked, which is now compressed with further rotating piston.
  • Figure 6 shows the above indicated operations upon rotation of the piston 12 in the direction of the arrow A relative to the fixed housing 10.
  • the upper inlet opening 36 is now open, so that mixture can be sucked.
  • the outlet opening 38 is closed.
  • the combustion chamber increases with the expanding combustion gases.
  • In the lower part of the outlet channel is fully open, so that the fuel gases can be ejected while the inlet port is closed, thus allowing a compression in the specified range.
  • Figure 8 shows the position inverse to Figure 5, i. the piston 12 is located with respect to the upper end surface 20 of the annular space 14 in its bottom dead center position and with respect to the lower end surface 20 of the annular space 14 in its upper dead center position.
  • the state shown in Figure 5 then again follows the figure 10, in which the piston 12 has performed a revolution relative to the housing and thus the four clocks, namely suction, compression, combustion and expulsion of the engine.
  • FIGS. 11 to 16 show the same phases for a rotary piston machine designed as a pump. Since there are only two cycles per stroke, namely suction and discharge, two pairs of inlet port 36 (suction line) and outlet port 38 (pressure line) may be provided. Moreover, the operation of the two piston / annulus assemblies is again offset in the same manner by 180 ° to each other, as has already been described in the engine according to Figures 5 to 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Centrifugal Separators (AREA)
EP00974505A 1999-11-04 2000-11-03 Drehkolbenmaschine Expired - Lifetime EP1226338B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19953168 1999-11-04
DE19953168A DE19953168A1 (de) 1999-11-04 1999-11-04 Drehkolbenmaschine
PCT/EP2000/010831 WO2001033047A1 (de) 1999-11-04 2000-11-03 Drehkolbenmaschine

Publications (2)

Publication Number Publication Date
EP1226338A1 EP1226338A1 (de) 2002-07-31
EP1226338B1 true EP1226338B1 (de) 2006-02-08

Family

ID=7927946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00974505A Expired - Lifetime EP1226338B1 (de) 1999-11-04 2000-11-03 Drehkolbenmaschine

Country Status (7)

Country Link
US (1) US6729862B1 (https=)
EP (1) EP1226338B1 (https=)
JP (1) JP2003514163A (https=)
AT (1) ATE317492T1 (https=)
AU (1) AU1278401A (https=)
DE (2) DE19953168A1 (https=)
WO (1) WO2001033047A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10156835C1 (de) * 2001-11-20 2003-04-30 Peter Schnabl Drehkolbenpumpe
DE102004019373B4 (de) * 2004-04-21 2013-04-18 Peter Schnabl Drehkolbenmaschine
US8336409B2 (en) * 2008-12-11 2012-12-25 Magnamotor, Llc Magnetic piston apparatus and method
GR20180100001A (el) * 2018-01-03 2019-09-06 Γεωργιτζικη, Ελπιδα Γεωργιου Μηχανισμος μετατροπης παλινδρομικης κινησης σε περιστροφικη ή αντιστροφα και εφαρμογες του μηχανισμου

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430602A (en) * 1921-04-29 1922-10-03 Sykora Rudolf Rotary pump
US2517279A (en) * 1944-04-06 1950-08-01 Benzler Bengt Lennart Control device for rotary reciprocating engines
US3667876A (en) * 1970-12-21 1972-06-06 Michael David Boyd Rotary fluid flow machines
DE2733574A1 (de) * 1977-07-26 1979-02-08 Hans Frank Drehkolbenmaschine
BR7805823A (pt) * 1978-09-06 1981-10-27 C Parente Bomba rotativa de embolo oscilante na direcao axial com controle e inversao de fluxo
GB2075122A (en) * 1980-04-14 1981-11-11 Jayasooriya L Rotary positive-displacement fluid-machines
GB8922993D0 (en) * 1989-10-12 1989-11-29 Richards Kevin Pump or motor
ATE146849T1 (de) * 1991-08-06 1997-01-15 William A Goodman Rotationspendelkolbenmaschine
CA2215219C (en) * 1996-11-19 2000-07-04 Yukio Kajino Disc-type rotary engine
JP4056600B2 (ja) * 1996-11-19 2008-03-05 幸男 梶野 円盤型回転エンジン
IT1288494B1 (it) 1996-11-20 1998-09-22 Sasib Spa Metodo e dispositivo per il controllo senza contatto diretto delle teste delle sigarette, o simili.

Also Published As

Publication number Publication date
DE50012205D1 (de) 2006-04-20
EP1226338A1 (de) 2002-07-31
AU1278401A (en) 2001-05-14
DE19953168A1 (de) 2001-05-10
WO2001033047A1 (de) 2001-05-10
ATE317492T1 (de) 2006-02-15
JP2003514163A (ja) 2003-04-15
US6729862B1 (en) 2004-05-04

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