US3188918A - Rotary machine having a fluidworking medium - Google Patents

Rotary machine having a fluidworking medium Download PDF

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Publication number
US3188918A
US3188918A US265188A US26518863A US3188918A US 3188918 A US3188918 A US 3188918A US 265188 A US265188 A US 265188A US 26518863 A US26518863 A US 26518863A US 3188918 A US3188918 A US 3188918A
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US
United States
Prior art keywords
rotor
pintle
ring
rotation
inlet
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
US265188A
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English (en)
Inventor
Bjorklund Gustaf Erik
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.)
REDERI SOYA AB
Original Assignee
REDERI SOYA AB
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 REDERI SOYA AB filed Critical REDERI SOYA AB
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Publication of US3188918A publication Critical patent/US3188918A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0447—Controlling
    • F03C1/0466—Controlling by changing the phase relationship between the actuated cam and the distributing means
    • 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
    • F01C21/18—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L33/00—Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted for machines or engines with variable fluid distribution
    • F01L33/02—Rotary or oscillatory slide valve-gear or valve arrangements, specially adapted for machines or engines with variable fluid distribution rotary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0403—Details, component parts specially adapted of such engines
    • F03C1/0435—Particularities relating to the distribution members
    • F03C1/0438—Particularities relating to the distribution members to cylindrical distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0447—Controlling
    • F03C1/0457—Controlling by changing the effective piston stroke
    • F03C1/046—Controlling by changing the effective piston stroke by changing the excentricity of one element relative to another element

Definitions

  • This invention relates to rotary machines of the type comprising a centrally arranged pintle acting as a valve, a rotor mounted on the pintle and provided with cylinder spaces each of which has a port which cooperates with the pintle and during rotation of the rotor on the pintle is successively connected to and disconnected from an inlet duct and an outlet duct in the pintle, and a ring mounted eccentrically to the pintle said ring surrounding the rotor and engaging pistons which are movable in the cylinder spaces and during rotation of the rotor are propelling the ring and at the same time are reciprocated thereby between two dead centre positions.
  • the invention relates to a construction of the type in which the machine acts as a motor and the working medium of which is a compressed gaseous medium, such as cornp-ressed air.
  • the cylinder spaces must be put into communication with the inlet and outlet in exact accurate position of the pistons during the cycle of operation. This position varies with the pressure, speed and piston stroke if said stroke is variable. It may also be advantageous to interrupt the communication between the cylinders and the ducts during part of the cycle of operation, the gas enclosed in the cylinder spaces expanding or being compressed during said part. By selecting suitable opening angles of the pintle it is easily possible in this manner to obtain an optimum operation of the motor for given conditions.
  • the object of the present invention is to provide a device which renders possible displacement of the pintle in a manner such as to maintain favourable datum angles of the pintle at varying eccentricity and clockwise as well as counter-clockwise rotation.
  • the pintle is guided relative to the ring by means which render possible translational displacement of the pintle While maintaining a certain angular displacement of the pintle-datum angle'relative to the angular position of the rotor in which the iston changes its direction of motion, with or Withoutchange of said datum angles during displacement.
  • the datum angle may be selected such that a precompression is obtained and that the pressure due to said precompression in the cylinder space inside the piston is equal to the pressure which prevails in the inlet duct of the pintle when the port is opening into said cylinder space.
  • FIG. 1 is a diagrammatic sectional view taken parallel to the'axis of a motor constructed in accordance with the invention.
  • FIG. 2 shows the pintle in a similar section and a diagram illustrating the conditions on reversal of the direction of rotation.
  • FIGS. 3 and 6 are diagrammatic radial sectional views and FIGS. 4, 4a and 5 are diagrams.
  • numeral 1 denotes a pintle and numeral 2 a rotor mounted for rotation on the pintle and having cylinder spaces 3 for pistons 4 which are radially movable in the cylinder spaces relative to the axis of rotation 0 of the rotor, six pistons being provided in the form of balls.
  • the halls are in contact with recesses 5 of a roll race formed on the internal side of surrounding ring 6 which like the rotor 2 is mounted in the frame or casing (not shown) of the motor so as to he rotatable about an axis 0' which is located eccentrically with respect to the pintle 1.
  • the pintle has longitudinally extending recesses forming an inlet duct 7 for a compressed gaseous medium, preferably compressed air and an outlet I duct 8 for discharged working medium.
  • a compressed gaseous medium preferably compressed air
  • an outlet I duct 8 for discharged working medium.
  • the balls 4 which engage the recesses 5 on the internal side of the ring and act both as pistons and as locking members. Due to the eccentricity of the ring 6 relative to the pintle and the rotor the balls will move during each revolution from an inner dead centre assumed by the ball 4a outwards in the cylinder space to an outer dead centre position as assumed by the ball 4b.
  • the cylinder spaces communicate with ports 9. During one revolution each port passes successively the inlet duct 7, a pintle surface 10, the outlet duct 8 and a pintle surface 11. The stroke of the pistons equals twice the eccentricity which is the distance between 0 and 0'.
  • the recesses in the pintle 1 which form the inlet duct 7 and the outlet duct 8 are bounded by plane parallel surfaces 12 and 14, located at different distances from the axis of rotation 0 such that the cross-sectional area of the inlet duct 7 is smaller than that of the outlet duct 8.
  • a plane of symmetry ofthe pintle at a right angle to the plane surfaces 12, 14 thereof is indicated by a chain-dotted line 15.
  • the angular position in which the piston is at its inner dead centre is indicated at VA for the direction of rotation RA and at VB for the direction of rotation RB.
  • the port In the position 9a the port is about to be connected to the inlet 7, and in the -position'9 b the port has just been "covered. The angle between these positions, that is, theinlet angle is indicated at a.
  • the port In' the position 9c the port is about to be connected to the outlet 8 and in the position 9d it has just been covered. The angle between these a single straight line.
  • the outlet angle is. equal to oc+2l+2v
  • 8 is the angle through which the centre of the port moves from the inner dead centre positionVA to the position in which the port is aboutto be connected'tothe inlet
  • 'y is the angle through which the centre of the port moves ncm the'm'ornent when the communication with the outlet'duct 'Sis' about to be openedtofthe outer 7 dead centre po's'ition (which i the position'of the m t in which the, corresponding; piston assumes its corresponding dead centre position).
  • FIG. 4 illustrates'a pintle diagram similar to thatshown inFIG Z, and from FIG.
  • FIGS illustrates in a diagrammatic way displacement from A to B along a curved linewhich is symmetrical with respect to a Hueyy.
  • ocH 2fl+25 willbe the same for both directions ofrota-fl tion which meansthat all of'the characteristic angles will be unchanged irrespective of the direction of rotation.
  • V Numeral 24 denotes the curved line
  • the present invention opens the possibility of selecting optimum and equal conditions forboth directions of rotation which is very im- In FIGURE 2 the datuinangle'fis defined. by the intersec- 7 'tion of a line through tlie'center of rotation 0 of the row tor andfthe center of rotation A of the cylinders and a li'ne through 0 and through the axis of the cylinder at 9a where the cylinde'ris about to be uncovered at the inlet. .Thus, the datum angle is shown at 5.
  • the ring 6 is rotatably but non-displaceably mounted in the casing of the motor whereas the pintle and the rotor are'tr ansversely displaceable in'the casing for varying the eccentricity and consequently the stroke of the pistons' Asvwill be apparent from FIGQZ re:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Check Valves (AREA)
US265188A 1962-04-04 1963-03-14 Rotary machine having a fluidworking medium Expired - Lifetime US3188918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE376362 1962-04-04

Publications (1)

Publication Number Publication Date
US3188918A true US3188918A (en) 1965-06-15

Family

ID=20262816

Family Applications (1)

Application Number Title Priority Date Filing Date
US265188A Expired - Lifetime US3188918A (en) 1962-04-04 1963-03-14 Rotary machine having a fluidworking medium

Country Status (3)

Country Link
US (1) US3188918A (de)
CH (1) CH425340A (de)
GB (1) GB1044543A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374712A (en) * 1965-05-05 1968-03-26 Soya Rederi Ab Hydraulic radial piston machines
US3910162A (en) * 1972-04-22 1975-10-07 Bosch Gmbh Robert Force compensating arrangement for a radial piston machine
DE2510959A1 (de) * 1975-03-13 1976-09-30 Rexroth Gmbh G L Verstellbare fluegelzellenpumpe
US4927338A (en) * 1987-03-02 1990-05-22 Nippondenso Co., Ltd. Radial piston pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386459A (en) * 1944-04-10 1945-10-09 Richard W Hautzenroeder Speed change device
US2502546A (en) * 1947-03-28 1950-04-04 Denison Eng Co Hydraulic apparatus
US2566418A (en) * 1947-06-10 1951-09-04 United Aircraft Corp Stroke control means for hydraulic pumps and motors
US2673526A (en) * 1950-09-27 1954-03-30 United Aircraft Corp Support ring mounting for rotary radial piston pumps or motors
US2723596A (en) * 1947-04-23 1955-11-15 Leslie B M Buchanan Gyroscopic azimuth stabilizer and hydraulic drive for a gun
US2741993A (en) * 1952-06-20 1956-04-17 Jr Elias Orshansky Pump or motor for high hydraulic pressures
US2772755A (en) * 1950-07-13 1956-12-04 Daimler Benz Ag Pump type hydraulic brake
US3106167A (en) * 1958-06-24 1963-10-08 Dentatus Ab Machine adapted to operate as pump, compressor or motor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386459A (en) * 1944-04-10 1945-10-09 Richard W Hautzenroeder Speed change device
US2502546A (en) * 1947-03-28 1950-04-04 Denison Eng Co Hydraulic apparatus
US2723596A (en) * 1947-04-23 1955-11-15 Leslie B M Buchanan Gyroscopic azimuth stabilizer and hydraulic drive for a gun
US2566418A (en) * 1947-06-10 1951-09-04 United Aircraft Corp Stroke control means for hydraulic pumps and motors
US2772755A (en) * 1950-07-13 1956-12-04 Daimler Benz Ag Pump type hydraulic brake
US2673526A (en) * 1950-09-27 1954-03-30 United Aircraft Corp Support ring mounting for rotary radial piston pumps or motors
US2741993A (en) * 1952-06-20 1956-04-17 Jr Elias Orshansky Pump or motor for high hydraulic pressures
US3106167A (en) * 1958-06-24 1963-10-08 Dentatus Ab Machine adapted to operate as pump, compressor or motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374712A (en) * 1965-05-05 1968-03-26 Soya Rederi Ab Hydraulic radial piston machines
US3910162A (en) * 1972-04-22 1975-10-07 Bosch Gmbh Robert Force compensating arrangement for a radial piston machine
DE2510959A1 (de) * 1975-03-13 1976-09-30 Rexroth Gmbh G L Verstellbare fluegelzellenpumpe
US4927338A (en) * 1987-03-02 1990-05-22 Nippondenso Co., Ltd. Radial piston pump

Also Published As

Publication number Publication date
CH425340A (de) 1966-11-30
GB1044543A (en) 1966-10-05

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