EP0063529A1 - Gleitschieber für Druckfluidum-Drehkolbenmaschine - Google Patents

Gleitschieber für Druckfluidum-Drehkolbenmaschine Download PDF

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Publication number
EP0063529A1
EP0063529A1 EP82420016A EP82420016A EP0063529A1 EP 0063529 A1 EP0063529 A1 EP 0063529A1 EP 82420016 A EP82420016 A EP 82420016A EP 82420016 A EP82420016 A EP 82420016A EP 0063529 A1 EP0063529 A1 EP 0063529A1
Authority
EP
European Patent Office
Prior art keywords
partition
retractable
basins
partition according
notches
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.)
Withdrawn
Application number
EP82420016A
Other languages
English (en)
French (fr)
Inventor
Charles Mollin
Jean-Marc Seard
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.)
Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement SA
Original Assignee
Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement SA
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 Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement SA filed Critical Centre Stephanois de Recherches Mecaniques Hydromecanique et Frottement SA
Publication of EP0063529A1 publication Critical patent/EP0063529A1/de
Withdrawn legal-status Critical Current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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0836—Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
    • 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
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3448—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member with axially movable vanes

Definitions

  • the present invention relates to improvements made to retractable partitions of the kind used in a rotary pressurized fluid machine such as a pump, a motor or a compressor o
  • Rotating machines of this type are known, the general diagram of which is recalled in FIG. 1 attached.
  • Hydraulic motors in the description which follows, it being understood that the object concerned is a rotating machine in general, whether it is a motor, d a pump, or a compressor, operating with a compressible or non-compressible fluid.
  • the known motor illustrated in FIG. 1, comprises a cylindrical rotor 1 turning in leaktight manner in the bore of a stator 2.
  • the rotor 1 is integral with an output shaft 2 by which the hydraulic motor can drive any receiving device.
  • the rotor 1 comprises one or more annular cylindrical grooves 4, of constant section, in which one or more fixed parts 5, called “reaction members”, are fitted. Each of the reaction members 5 protrudes from the inner face of the bore of the stator 2, of which it is integral.
  • Longitudinal notches 6 are hollowed out on the periphery of the cylindrical rotor 1, each of which is oriented along a generatrix and hollowed out radially across the annular groove or grooves 4.
  • the longitudinal notches 6 are subsequently called “axial notches” o
  • Each retractable partition 7 is adjusted in its notch 6, so as to define the seal against the internal face of the bore of the stator 2.
  • each partition 7 makes it possible to compartmentalize the groove or grooves 4 of the rotor 1, and is erased by its notch 6 in order to overcome each of the obstacles encountered successively in the form of the fixed reaction members 5.
  • the present invention aims to avoid these in convenient, that is to say to ensure a perfect seal at the retractable partitions 7, while eliminating any risk of blocking or jamming during their movements.
  • a retractable partition according to the invention for a rotary pressurized fluid machine has in elevation a profile inscribed in an elongated rectangle along one of the large sides of which one or more notches are distributed, and it is characterized in that its lateral shape is symmetrical, that is to say comprising the same notches along the two large sides of the rectangle, cut out and arranged symmetrically with respect to the longer of the two medians of this rectangle, means being also provided for placing in hydraulic communication, the two notches of the same pair located back to back.
  • the edges perpendicular to the mean plane of a flat retractable partition are chamfered, as well as the edges of the ends, so as to reveal a film of lubricating oil during the movements of the partition.
  • the variation in the value of the speed and the variation in the acceleration are such that the mechanical rotation torque that the rotor will have to provide to move the partitions will be as small as possible; any shock is eliminated at each phase of starting or stopping the movement of the partition.
  • a hydraulic motor of known type of the kind illustrated in FIG. 1 comprises retractable partitions 7 of the type illustrated in FIGS. 2 and 3.
  • Such a retractable partition is a flat part with an elongated rectangular outline, radial notches 13 being distributed along one of the two long sides of the rectangle.
  • the number of notches 13 is equal to the number of annular grooves 4 of the engine.
  • These notches 13 are provided on only one of the two sides of the rectangle.
  • these passage means consist of lateral recesses 18 and 19.
  • means used to put the two notches 13 and 17 of the same pair in permanent communication are constituted by at least one bore 20 made through the bottom of each notch.
  • FIGS. 8, 9, 24 and 25 corresponds to that of FIGS. 4 and 5.
  • the right end of the partition has basins or recesses 21, 22, 24 or 54, 55 of the partition.
  • basins or recesses have the same shape and the same surface on the two opposite lateral sides of the partition and are such that they retain at least one bar 25 where the thickness of the retractable partition 15 is not modified.
  • each face of the partition has a bar 25 located or not on the median axis of the retractable partition.
  • each face of the retractable partition has two bars 25.
  • the length of the vein 4d leakage (FIG. 10) towards the outside of the rotor on the two faces of the retractable partition 15 is constant.
  • the leakage lengths 29 and 30 are variable during the movement of the partition 15, but their sum is constant and is always equal to the length 26.
  • each longitudinal notch of the rotor there are provided on the internal faces of each longitudinal notch of the rotor 1, lubrication basins located two by two in opposition, each between two annular grooves such as 4a, 4b, 4c , 4d.
  • lateral basins 31 and 32 which have just been described to equip the interior of the lateral faces of each longitudinal notch 6 of the rotor 1 (FIGS. 11 and 12) can be used concomitantly or not with the basins 13 , 19 of the partitions 15 according to the invention.
  • FIGS. 13 and 14 show a retractable partition 15 on which appears another of the characteristics of the invention.
  • the profile of the partition 15 is inscribed in an elongated rectangle.
  • the edge of the partition 15 is in contact with the internal face of the bore of the stator 2.
  • the edge of the partition 15 bears on the bottom 35 of its longitudinal notch 6 in the rotor'1.
  • the partition 15 remains generally generally symmetrical with respect to its longitudinal axis 16, the detail which has just been described escapes this symmetry: the edges 36 are sharp, while their counterparts 37 are edges rounded off with leave. It is to take account of this exception of detail that the general shape of a retractable partition 15 will be claimed as corresponding to a "symmetrical lateral shape" with respect to the axis 16, while the edges 37 may be sharp (c that is to say symmetrical edges 36 ) or rounded in con gé (in which case their section is not symmetrical with that of the homologous edges 36).
  • the pressure can be established at different levels in each of these annular grooves 4.
  • the hydraulic connection between a basin provided for bottom 35 of each of the longitudinal notches 6 of the rotor 1, and a basin 41 provided opposite in the stator 2 is made via the notches 13 and 17 of the retractable partition 15. It is indeed known that the latter are connected between them, either by lateral basins 18, 19, or by holes 20.
  • FIGS. 19 and 20 additional lubrication basins can be provided, as illustrated in FIGS. 19 and 20.
  • basins such as 45, 46, 47, and 48 (the latter type not appearing in FIGS. 19 and 20) arranged in the middle of the surfaces 49 situated on the partition between the notches 13 and 17.
  • the two basins 46 and 47 provided on one face of the partition are separated from each other by a transverse bar 50 ensuring sealing at this point.
  • a bar, not shown, corresponding to 50 provides sealing between each basin 45 and the corresponding 49 (not visible in the drawings).
  • the surfaces of the annular grooves 4 and the longitudinal notches 6 of the rotor 1 can be subjected to a surface treatment to give them great hardness, for example by nitriding or sulfurization.
  • the rubbing surface of the partitions 15 can also be subjected to a surface treatment in order to increase their capacity for absorbing the lubricant. It may be a trai by sulphation, phosphatation, or sulfinuzation, aimed at raising their surface energy.
  • each sculpture 54 is a pyramidal imprint at the point of diamond.
  • each sculpture 54 is constituted by an imprint in the form of a spherical cap.
  • the hollows of these sculptures 54 have, in addition to improving lubrication, the property of constituting "debris traps". Indeed, a debris engaging between the rubbing surfaces, would be moved a large number of times between the surfaces, risking damaging them by causing seizure before being discharged.
  • this same debris will lodge in the hollow of the sculpture and therefore does not risk damaging the surfaces, which allows the machine to function- ber even with a fluid charged with fine particles without risk of seizure of the partitions in their housing.
  • the partition 7 may not be indented and be presented under the shape of figure 320
  • the partition or its housing must have one or more conduits 61 to allow the oil to pass freely from the chamber 62 to the chamber 63 during the displacement of the partition.
  • the control of the partition is carried out as previously by means of two opposite complementary cams 10 and 11 pressing on the rods 64-65.
  • the partition 7 can be controlled by a single cam groove 66 in which a control finger 68 engages.
  • the partition 15 is split lengthwise which defines an interior recess 69 at the center of which is preferably housed a free ball 70 forming a valve. Holes 71 and 72 open onto the lateral faces 73 and 74 to connect them to the ball 70 of the valve.
  • the recess 69 defines inside the partition 15, a surface which appears in dotted lines in FIG. 35, and on which the high pressure of the fluid is exerted, which has the effect of tending to cause the partition 15 to "swell", the sealing of which is thus improved.
  • the ball valve 70 makes it possible, regardless of the direction of operation of the machine, to always make the high pressure HP prevail in the recess 69.
  • a seal 75 can be placed inside the recess 69. Indeed , the hydraulic stream 4 is interrupted by this partition 15, so that it prevails on one side 74 of the partition 15 high pressure, while on the other side 73 there is low pressure.
  • the sealing of the partition 15 is therefore ensured on the side 73 where the pressure is the lowest, without communication with the corresponding part of the fluid stream 4.
  • the ball 70 reverses its position and the recess 69 is always subjected to high pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Hydraulic Motors (AREA)
EP82420016A 1981-01-26 1982-01-26 Gleitschieber für Druckfluidum-Drehkolbenmaschine Withdrawn EP0063529A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8101911 1981-01-26
FR8101911A FR2498695B1 (fr) 1981-01-26 1981-01-26 Perfectionnements aux cloisons escamotables pour une machine rotative a fluide sous pression telle qu'une pompe, un moteur ou un compresseur

Publications (1)

Publication Number Publication Date
EP0063529A1 true EP0063529A1 (de) 1982-10-27

Family

ID=9254707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82420016A Withdrawn EP0063529A1 (de) 1981-01-26 1982-01-26 Gleitschieber für Druckfluidum-Drehkolbenmaschine

Country Status (2)

Country Link
EP (1) EP0063529A1 (de)
FR (1) FR2498695B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7080623B1 (en) * 2003-06-17 2006-07-25 Advanced Technologies, Inc. Rotor for an axial vane rotary device
US7140853B2 (en) * 2004-09-07 2006-11-28 Osama M Al Hawaj Axial vane rotary device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991015679A1 (en) * 1990-04-11 1991-10-17 Mohammad Mahdavi Hezavehi Rotary corradial-vane compressor
WO1991015660A1 (en) * 1990-04-11 1991-10-17 Mohammad Mahdavi Hezavehi Rotary internal combustion engine (ric-engine)
US5980225A (en) * 1996-07-05 1999-11-09 Sundstrand Fluid Handling Corporation Rotary pump having a drive shaft releasably connected to the rotor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR917726A (fr) * 1945-07-24 1947-01-20 Perfectionnements apportés aux machines rotatives à palettes
FR999117A (de) * 1952-01-25
FR1240951A (fr) * 1958-11-20 1960-09-09 Trojan Corp Perfectionnements aux machines rotatives
FR2128165A2 (de) * 1971-03-09 1972-10-20 Marcel Jean
DE2232609A1 (de) * 1972-07-03 1974-01-24 Wankel Felix Dichtung fuer rotationskolbenmaschinen
FR2193151A2 (de) * 1972-06-07 1974-02-15 Marcel Jean
FR2250904A1 (en) * 1973-11-09 1975-06-06 Pfeiffer Wakuumtechnik Wetslar Plastic impeller for rotary pumps - reinforced by fibres oriented exclusively parallel to rotational axis of pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR999117A (de) * 1952-01-25
FR917726A (fr) * 1945-07-24 1947-01-20 Perfectionnements apportés aux machines rotatives à palettes
FR1240951A (fr) * 1958-11-20 1960-09-09 Trojan Corp Perfectionnements aux machines rotatives
FR2128165A2 (de) * 1971-03-09 1972-10-20 Marcel Jean
FR2193151A2 (de) * 1972-06-07 1974-02-15 Marcel Jean
DE2232609A1 (de) * 1972-07-03 1974-01-24 Wankel Felix Dichtung fuer rotationskolbenmaschinen
FR2250904A1 (en) * 1973-11-09 1975-06-06 Pfeiffer Wakuumtechnik Wetslar Plastic impeller for rotary pumps - reinforced by fibres oriented exclusively parallel to rotational axis of pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7080623B1 (en) * 2003-06-17 2006-07-25 Advanced Technologies, Inc. Rotor for an axial vane rotary device
US7140853B2 (en) * 2004-09-07 2006-11-28 Osama M Al Hawaj Axial vane rotary device

Also Published As

Publication number Publication date
FR2498695B1 (fr) 1986-03-21
FR2498695A1 (fr) 1982-07-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19821008

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19870424

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SEARD, JEAN-MARC

Inventor name: MOLLIN, CHARLES