EP0901563B1 - Flüssigkeitsdrehflügelmotor/-pumpe - Google Patents
Flüssigkeitsdrehflügelmotor/-pumpe Download PDFInfo
- Publication number
- EP0901563B1 EP0901563B1 EP96914010A EP96914010A EP0901563B1 EP 0901563 B1 EP0901563 B1 EP 0901563B1 EP 96914010 A EP96914010 A EP 96914010A EP 96914010 A EP96914010 A EP 96914010A EP 0901563 B1 EP0901563 B1 EP 0901563B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- rotor
- rotor body
- vanes
- radially
- 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
Links
Images
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
- F01C1/30—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
- F01C1/3441—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F01C1/3442—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- 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
Definitions
- the present invention relates to an apparatus capable for use as a pump or motor, and in particular, to a fluid vane pump/motor.
- fluid vane motors comprise a housing having a cylindrical bore closed by end plates and a rotor mounted for rotation within the bore.
- the rotor is in the form of a solid cylindrical billet of metal with longitudinally extending slots formed about its periphery.
- the axis of rotation of the rotor is parallel to but offset from the longitudinal axis of the housing.
- a plurality of vanes are supported in respective longitudinal slots in the rotor in a manner so as to allow movement in the radial direction.
- Fluid chambers are formed between adjacent vanes, the volume of the chambers varying as the rotor rotates.
- the chambers When functioning as a pump, the chambers act to displace fluid from an inlet in the housing to an outlet, and when acting as a motor, the chambers allow for the release of pressure of a pressurised fluid to cause rotation of a shaft attached to the rotor.
- EP-A-0230054 discloses a rotary vane machine in which a rotor is rotatable eccentrically within a cylinder.
- the rotor comprises a hollow drum with axial slots in its outer periphery for vanes which are radially slidable within the slots.
- the rotor has reduced diameter support regions extending axially away from the hollow drum at each end. The rotor is supported in bearings via these reduced diameter regions.
- the slots in the hollow drum extend up to but not into the reduced diameter support regions of the rotor.
- each slot Preferably said opposite ends of each slot are arcuate in shape.
- each end of said housing is provided with a stepped inner surface formed by the junction of two faces and each seal can make sealing contact with both of said faces of an adjacent end of said housing.
- a groove extending radially from each end of each slot is formed on a surface at each of said first and second ends interior of said rotor body for receiving axially opposite ends of a vane received in that slot.
- said grooves on said interior surface at said first end of said rotor body extend beyond the centre of said rotor body.
- said interior surface at said first end of said rotor body is provided with a circular recess centered about said rotation axis and the grooves formed on this interior surface extends radially from the end of the slots near said first end to said circular recess.
- said rotor comprises a shaft extending from the first end of said rotor body and through an aperture formed in a first of said ends of said housing, wherein when said apparatus is used as a pump, torque can be applied to said shaft to impart rotational motion to said rotor, and when said apparatus is used as a motor, said shaft can act as a power take off.
- the second end of said rotor body opposite said shaft is provided with a recess for receiving a stub shaft formed on a second of said ends of said housing for rotatably supporting said second end of said rotor body.
- said axially opposite edges of said vanes are formed with arcuate surfaces for sliding and substantially sealing contact with respective adjacent first and second ends of said housing.
- each vane is formed with an arcuate surface for sliding and substantially sealing contact with said inner circumferential surface of said housing.
- said apparatus further comprises biasing means disposed within said rotor body for biasing said vanes radially outwardly towards said inner circumferential surface of said housing.
- each vane Preferably a recess is formed in the radially inner edge of each vane inboard of axially opposite ends of each vane for receiving said biasing means.
- said rotor comprises a shaft extending from the first end of said rotor body and through an aperture formed in a first of said ends of said housing, wherein when said apparatus is used as a pump, torque can be applied to said shaft to impart rotational motion to said rotor, and when said apparatus is used as a motor, said shaft can act as a power take off.
- said resilient element comprises one of a split sleeve or a tube of resilient material; a length of natural or synthetic rubber tubing or rod; a tube or rod made of plastics material; a flat section helical -spring fitted axially within said rotor body; a solid or hollow rod or tube of material provided with resilient circumferentially spaced inserts at intervals corresponding to the location of said vanes.
- said biasing means comprises a pressurised fluid retained within said rotor body.
- First and second ports 20 and 22 are also formed in the housing 12 for allowing fluid communication between the interior and exterior of the housing 12.
- Rotor 24 having a substantially hollow body 26 is supported by the housing 12 for rotation within the cavity 18 about a rotation axis 28 which is parallel to but offset from longitudinal axis 30 of the cavity 18.
- a plurality of vanes 32 are retained by the rotor 24 for movement radially of the rotation axis 28.
- the vanes 32, rotor 24 and housing 12 are juxtaposed so that a substantially sealed chamber is formed between adjacent vanes 32, inner surface 34 of the housing 12 and outer circumferential surface 36 of the rotor body 26.
- the first and second ports 20 and 22 are disposed in different chambers.
- the housing 12 is composed of a cylindrical member 38, the interior of which forms cavity 18. Ends 14 and 16 of the housing 12 are in the form of plates 40 and 42 respectively which can be bolted to opposite ends of the cylindrical element 38.
- the surface of each of the plates 40 and 42 facing the rotor 24 is stepped.
- the interior surface 44 is stepped so as to reduce in width in the radial direction toward rotation axis 28. More particularly, surface 44 comprises a first annular-like radially outer-most surface 46, a stepped surface 47, an adjacent second radially inner intermediate annular-like surface 48, a further stepped surface 49, and adjacent and radially innermost third annular-like third surface 50.
- An aperture or hole 52 is formed through the first plate 40 centred on rotation axis 28.
- the second plate 42 has an inner surface 54 which is composed of a first radially outermost annular-like surface 56, first stepped surface 57, an adjacent and radially inner annular-like second surface 58, second stepped surface 59, and a radially innermost annular-like third surface 60. Extending from the third surface 60 concentrically with rotation axis 28 is stub shaft 62. A plurality of axially extending holes 64 are formed circumferentially about the first and second plates 40 and 42 which are disposed to register with threaded holes 66 formed in the opposite ends of the cylindrical element 38. Bolts (not shown) are passed through holes 64 and threadingly engage holes 66 for fastening the first and second plates 40 and 42 to opposite ends of the cylindrical element 38.
- rotor body 26 is in the general form of a hollow cylinder being closed at a first end 68 and open at an opposite second end 70.
- the rotor body 26 is provided with reduced diameter portions 72 and 74 at the first and second ends 60 and 70 respectively.
- the reduced diameter portions 72 and 74 seat annular seals 76 and 78 respectively.
- Shaft 80 extends from the first end 68 concentric with rotation axis 28 through the hole 52 in the first plate 40.
- a short length 82 of the shaft 80 adjacent the first end 68 is formed of an increased diameter.
- Bearing 83 is fitted onto shaft 80 up to short length 82 and is sealed against surfaces 49 and 50 of the first plate 40.
- Second end 70 is formed with a radially inwardly extending circumferential lip 84 and an axially extending annular boss 86.
- Stub shaft 62 can be received in the opening formed by the lip 84 and boss 86.
- the juxtaposition of annular surface 90 of the lip 84 facing a second plate 42 and the radially innermost circumferential surface 92 of the boss 86 form a seat for bearing 94.
- the bearing 94 has an inner race 96 which receives, with an interference fit, the stub shaft 62.
- a plurality of slots 96 are formed in the rotor body 26 which extend between and inboard of the first end 68 and second end 70. As seen most clearly in Figure 4, opposite ends 98 and 100 of the slots 96 are arcuate in shape and terminate on the reduced diameter portions 72 and 74 respectively. Slots 96 pass wholly through the thickness of the rotor body 26. In this particular embodiment, four equally spaced slots 96 are formed circumferentially about the rotor body 26.
- a radially extending groove 102 (refer Figures 1 and 3) is formed on an interior surface of first end 68 extending colinearly with the depth of each slot 96 at end 98. Each groove 102 extends to the rotational axis 28 and runs into a corresponding groove 102 of an opposing slot 96.
- Grooves 104 of similar configuration to grooves 102 are formed at the opposite end 100 of each slot 96 on an axially inner annular surface 106 of the lip 84. However, as the grooves 104 only extend for the axial length of lip 84, they do not pass through the rotational axis 28 nor do grooves 104 of opposing slots 96 run into each other.
- Vanes 32 are in the form of generally rectangular plates having arcuate, and more particularly convexly curved axial edges 108 and 110 and similarly curved radially remote edge 112 and radially near edge 114.
- the axial edges 108 and 110 extend in a radial direction below the radially near edge 104 so as to form protruding tabs 116 and 118 respectively between which a recess 120 is defined.
- a biasing means in the form of a split sleeve 122 (refer Figures 1, 6A and 6B) is disposed within the cylindrical element 38 for biasing the vanes 32 radially outwardly from rotation axis 28 so that radially remote edge 112 of the vanes 32 are in sliding and sealing contact with inner surface 34 with at most a layer of lubricant therebetween.
- the split sleeve 122 is received in the recess 120 between tabs 116 and 118 of each vane 32 preventing axial movement of the sleeve 122 during operation of the apparatus 10.
- the sleeve 122 is made of a spring metal and dimensioned so as to maintain contact with all of the vanes 32 during rotation of the rotor 24.
- the sleeve 122 floats within the rotor 24 and adopts a position that is concentric with and parallel to axis 30 of the housing 12.
- the outside diameter of the sleeve 122 is equal to the internal diameter of housing 12 minus twice the distance between the radially remote and near edges 112 and 114 of a vane 32.
- the outside diameter is fractionally larger to provide a degree of spring loading the radially near edges 114 of the vanes 32.
- seal 76 When the apparatus 10 is fully assembled, the seal 76 overlies end 98 of each slot 96 and abuts axial edge 108 of each vane 32. Seal 78 is similarly juxtaposed relative to the end 100 of slots 96 and axial edge 110 of vanes 32. As a result, the seals 76 and 78 effectively seal the ends of slots 96. Further, seal 76 sealingly abuts surfaces 47 and 48 of first plate 40. Likewise, seal 78 sealingly abuts surfaces 57 and 58 of the second plate 42. Radially remote edge 112 of each vane 32 forms a sliding seal against inner surface 34 of housing 12.
- the curvature on the radially remote and radially near edges 112 and 114 of the vanes 32 are shaped to suit the curvature of the inner surface 34 of housing 12 and the curvature and location of the outer peripheral surface of sleeve 122 respectively.
- the vanes 32 are of a length equal to that of cylindrical element 38 of the housing less a lubricating tolerance, similarly the width of the slots 96 and thickness of vanes 32 are relatively dimensioned so as to allow sliding of the vanes 32 within the slots 96 with a lubricating tolerance therebetween.
- FIGs 7 and 8 An embodiment of the apparatus 10 with three vanes is illustrated in Figures 7 and 8.
- like numbers indicate the same features as described with reference to the embodiment shown in Figures 1 to 6B.
- the apparatus 10 comprises three (or any other odd number) of vanes 32 there will not be pairs of diametrically opposed grooves 102, which in the case of an apparatus 10 with an even number of vanes 32, allows retraction of the vanes 32 within the rotor beyond the central axis 28.
- the interior surface of first end 68 is counter bored about axis 28 to form a circular recess 103 of a depth equal to the depth of grooves 102.
- the design of the vanes 32 can be modified so that the radially inner edge 114 is tapered on both sides as shown in Figures 9A to 9C.
- the tapering is not necessary in the case of the rotor 24 supporting six or less vanes 32.
- it is particularly advantageous for preventing interference between the radially inner edge 114 of adjacent vanes 32 in the case of a rotor having seven or more vanes when adjacent vanes are at or nearing full retraction and extend over the axis 28.
- housing 12 is shown as including separate end plates 40 and 42, one of those ends may be formed integrally with the cylindrical element 38 of the housing 12 and machined to provide the relevant step surfaces.
- the rotor 24 is shown as being a four vane (ie. four slot 96) greater or fewer vanes can be incorporated.
- the biasing element for biasing the vanes 32 radially outwardly is shown as being a split sleeve 122.
- biasing elements can be used to achieve the same effect for example: a length of resilient tubing or rod such as may be made from natural or synthetic rubber, or plastics material; a flat section helical spring; a solid or hollow rod or tube of material provided with resilient circumferentially spaced inserts at intervals corresponding to the location of the vanes 32; of a pressurised fluid sealed within the rotor body. All such modifications and variations are deemed to be within the scope of the present invention, the nature of which is to be determined from the following claims.
Claims (15)
- Vorrichtung (10), geeignet zur Verwendung als Pumpe oder Motor, wobei die Vorrichtung (10) aufweist:ein Gehäuse (12) mit abgedichteten Enden (14,16) und mit einem Hohlraum (18) zwischen den Enden, wobei das Gehäuse ferner einen ersten und zweiten Anschluß (20,22) aufweist, die beide eine Fluidverbindung zwischen dem Inneren und Äußeren des Gehäuses (12) erlauben;einen Rotor (24) mit einem im wesentlichen hohlen Rotorkörper (26), der von dem Gehäuse (12) gehalten wird, um sich innerhalb des Hohlraums (18) um eine Rotationsachse (28) zu drehen, die sich parallel und versetzt zu einer Längsachse (30) des Hohlraums (18) erstreckt, wobei der Rotorkörper (26) ein erstes und zweites Ende (68,70) hat, die sich gegenüberliegen und jeweils Abschnitte (72,74) mit bezüglich eines mittleren Abschnitts des Rotorkörpers verringertem Durchmesser aufweisen;mehrere in dem Rotorkörper (26) geformte Schlitze (96); undmehrere Flügel (32), von denen einzelne gleitbar in getrennten Schlitzen (96) gehalten werden, um sich radial zur Rotationsachse (28) zu bewegen;
dadurch gekennzeichnet, daß sich die Schlitze (96) zwischen dem ersten und dem gegenüberliegenden zweiten Ende (68,70) erstrecken und innenbords und in den Abschnitten mit verringertem Durchmesser (72,74) enden, und gekennzeichnet durch Dichtungen (76,78), die jeweils um die Abschnitte (72,74) mit verringertem Durchmesser herum angeordnet sind, wobei die Dichtungen (76,78) so eingesetzt sind, daß sie gegenüberliegende Enden (98,100) jedes Schlitzes (96) abdecken und an axial gegenüberliegenden Enden (108,110) der Flügel (32) abdichtend anliegen. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die sich gegenüberliegenden Enden (98,100) jedes Schlitzes (96) bogenförmig sind.
- Vorrichtung (10) nach Anspruch 2, dadurch gekennzeichnet, daß das Gehäuse (12) mit zwei gestuften Innenflächen (47,48;57,58) versehen ist, die jeweils von der Verbindungsstelle zweier Flächen gebildet werden, und die jeweiligen Dichtungen (76,78) einen Dichtungskontakt mit beiden der Flächen (47,48;57,58) der gestuften Innenflächen herstellen.
- Vorrichtung (10) nach Anspruch 3, gekennzeichnet durch eine Nut (102,104), die sich radial von jedem Ende jedes Schlitzes (96) entlang einer Oberfläche sowohl am ersten wie auch am zweiten Ende (68,70) innerhalb des Rotorkörpers (26) erstreckt, um axial gegenüberliegende Enden (108,110) eines in diesem Schlitz (96) aufgenommenen Flügels (32) aufzunehmen.
- Vorrichtung (10) nach Anspruch 4, dadurch gekennzeichnet, daß sich die Nuten (102) an dem ersten Ende (68) des Rotorkörpers (26) über das Zentrum des Rotorkörpers (26) hinaus erstrecken.
- Vorrichtung (10) nach Anspruch 4, dadurch gekennzeichnet, daß die Innenfläche des ersten Endes (68) des Rotorkörpers (26) mit einer um die Rotationsachse (28) zentrierten kreisförmigen Aussparung (103) versehen ist und sich die an dieser Innenfläche gebildeten Nuten (102) radial von dem Ende der Schlitze (98) nahe dem ersten Ende (96) zu der kreisförmigen Aussparung (103) erstrecken.
- Vorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, daß für einen Gleit- und wesentlichen Dichtungskontakt mit dem jeweiligen ersten und zweiten Ende (14,16) des Gehäuses (12) axial gegenüberliegende Kanten (108,110) der Flügel (32) mit bogenförmigen Flächen gebildet sind.
- Vorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, daß für einen Gleit- und wesentlichen Dichtungskontakt mit der inneren Umfangsfläche (34) des Gehäuses (12) eine radial fern gelegene Kante (112) jedes Flügels (96) mit einer bogenförmigen Fläche gebildet ist.
- Vorrichtung (10) nach Anspruch 1, gekennzeichnet durch innerhalb des Rotorkörpers (26) angeordnete Vorspannungseinrichtungen (122) zum Vorspannen der Flügel (96) radial nach außen in Richtung auf die innere Umfangsfläche (34) des Gehäuses (12).
- Vorrichtung (10) nach Anspruch 9, dadurch gekennzeichnet, daß die Vorspannungseinrichtung (122) ein federndes Element aufweist, das sich in Richtung der Rotationsachse (28) erstreckt und angepaßt ist, um gleichzeitig auf jeden Flügel (96) zu wirken.
- Vorrichtung (10) nach Anspruch 10, dadurch gekennzeichnet, daß das federnde Element (122) ein Element aus der folgenden Auflistung aufweist: eine geschlitzte Manschette oder ein Rohr aus einem federnden Material; ein Stück eines Rohrs oder Stabs aus Natur- oder synthetischem Kautschuk; ein Rohr oder einen Stab aus Kunststoffmaterial; eine axial innerhalb des Rotorkörpers eingesetzte Schraubenfeder mit flachem Querschnitt; einen massiven oder hohlen Stab oder ein massives oder hohles Rohr aus einem Material, das mit in Umfangsrichtung beabstandet angeordneten federnden Einsätzen in Abständen versehen ist, die dem Ort der Flügel (96) entsprechen.
- Vorrichtung (10) nach Anspruch 11, gekennzeichnet durch eine Aussparung (120), die in der radial inneren Kante (114) jedes Flügels (96) innenbords der axial gegenüberliegenden Enden (108,110) jedes Flügels (96) gebildet ist, um die Vorspannungseinrichtung (122) aufzunehmen.
- Vorrichtung (10) nach Anspruch 9, dadurch gekennzeichnet, daß die Vorspannungseinrichtung (122) ein unter Druck stehendes Fluid aufweist, das innerhalb des Rotorkörpers (26) gehalten wird.
- Vorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, daß der Rotor (24) eine Welle (80) aufweist, die sich von dem ersten- Ende (68) des Rotorkörpers (26) aus und durch ein Loch (52) erstreckt, das in einem ersten Ende der Enden (140) des Gehäuses (12) gebildet ist, wobei bei einer Verwendung der Vorrichtung (10) als Pumpe ein Drehmoment an die Welle (80) angelegt werden kann, um auf den Rotor (24) eine Rotationsbewegung zu übertragen, und bei Verwendung der Vorrichtung als Motor die Welle (80) als Abtrieb wirken kann.
- Vorrichtung (10) nach Anspruch 14, dadurch gekennzeichnet, daß das der Welle (80) gegenüberliegende zweite Ende (70) des Rotorkörpers (26) mit einer Aussparung (92) versehen ist, um eine in einem zweiten Ende (16) der Enden des Gehäuses (12) gebildete Flanschwelle (62) aufzunehmen, um das zweite Ende (70) des Rotorkörpers (26) drehbar zu halten.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPN3275A AUPN327595A0 (en) | 1995-05-30 | 1995-05-30 | Fluid vane motor/pump |
PCT/AU1996/000326 WO1996038654A1 (en) | 1995-05-30 | 1996-05-28 | Fluid vane motor/pump |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0901563A1 EP0901563A1 (de) | 1999-03-17 |
EP0901563A4 EP0901563A4 (de) | 2000-08-30 |
EP0901563B1 true EP0901563B1 (de) | 2003-05-07 |
Family
ID=3787617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96914010A Expired - Lifetime EP0901563B1 (de) | 1995-05-30 | 1996-05-28 | Flüssigkeitsdrehflügelmotor/-pumpe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0901563B1 (de) |
AU (1) | AUPN327595A0 (de) |
TW (1) | TW368562B (de) |
WO (1) | WO1996038654A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101586330B1 (ko) * | 2015-10-06 | 2016-01-19 | (주)한국브로워 | 초저음 무맥동의 특성을 가진 용적형 회전식 브로워 |
DE102018105144A1 (de) * | 2018-03-06 | 2019-09-12 | Schwäbische Hüttenwerke Automotive GmbH | Axiales Dichtelement Vakuumpumpe |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE186489C (de) * | ||||
FR923027A (fr) * | 1946-02-11 | 1947-06-25 | Machine rotative | |
GB677569A (en) * | 1950-03-10 | 1952-08-20 | John Meredith Rubury | Improvements in and relating to pumps having sliding vanes |
GB703761A (en) * | 1950-12-18 | 1954-02-10 | Louis Widdows | Improvements in or relating to slidable-vane rotary pumps |
DE2137494A1 (de) * | 1971-07-27 | 1973-02-08 | Acheson Gmbh | Drehfluegel-pumpe |
JPS50105614U (de) * | 1974-02-02 | 1975-08-30 | ||
DE2720910A1 (de) * | 1977-05-10 | 1978-11-23 | Gustav Beyer | Fluegelradturbomaschine ii |
US4484873A (en) * | 1980-12-09 | 1984-11-27 | Nippon Soken, Inc. | Through vane type rotary compressor with specific chamber configuration |
DE3512676A1 (de) * | 1985-04-09 | 1986-10-16 | Armatec FTS-Armaturen GmbH & Co KG, 7988 Wangen | Abdichtung von fluegeln fuer eine fluegelzellenluftpumpe |
EP0230054A1 (de) * | 1985-12-30 | 1987-07-29 | Branko Mlinaric | Die Rotations-Lamellenmaschine für mehrfache Zuwendung |
JPS63126583U (de) * | 1987-02-12 | 1988-08-18 | ||
GB2248655B (en) * | 1990-10-08 | 1994-05-04 | Pie Siong Koh | Seal arrangement for a rotary machine |
IT1268639B1 (it) * | 1994-10-21 | 1997-03-06 | Gilardini Spa | Compressore rotativo a palette |
-
1995
- 1995-05-30 AU AUPN3275A patent/AUPN327595A0/en not_active Abandoned
-
1996
- 1996-05-23 TW TW085106087A patent/TW368562B/zh not_active IP Right Cessation
- 1996-05-28 WO PCT/AU1996/000326 patent/WO1996038654A1/en active IP Right Grant
- 1996-05-28 EP EP96914010A patent/EP0901563B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1996038654A1 (en) | 1996-12-05 |
TW368562B (en) | 1999-09-01 |
EP0901563A4 (de) | 2000-08-30 |
AUPN327595A0 (en) | 1995-06-22 |
EP0901563A1 (de) | 1999-03-17 |
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