EP0851980B1 - Pompe rotative a palettes - Google Patents
Pompe rotative a palettes Download PDFInfo
- Publication number
- EP0851980B1 EP0851980B1 EP96931052A EP96931052A EP0851980B1 EP 0851980 B1 EP0851980 B1 EP 0851980B1 EP 96931052 A EP96931052 A EP 96931052A EP 96931052 A EP96931052 A EP 96931052A EP 0851980 B1 EP0851980 B1 EP 0851980B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- bore
- cylinder
- cylindrical
- vane
- 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
- 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
- F01C21/0854—Vane tracking; control therefor by fluid means
- F01C21/0872—Vane tracking; control therefor by fluid means the fluid being other than the working fluid
-
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
Definitions
- the present invention relates to a rotary pump comprising: a stator pierced with a bore delimited by a bottom, by a cover, and by a cylindrical side wall having a radius relatively large; a cylindrical rotor, disposed in the bore, tangent to the side wall cylindrical, and capable of being rotated about an axis offset from this bore; at least two identical pallets slidingly housed in radial housings of the rotor and integral in rotation with this rotor, each pallet having a defined width between first and second edges, the first of which bears on the side wall of the bore; and a cylinder coaxial with the cylindrical wall of the bore and having a relatively radius small, the width of each pallet being substantially equal to the difference between the spokes relatively large and small.
- Rotary pumps have been known and used for many decades for many multiple applications, and a pump of the type defined above is found for example described in patent document JP-A-62 170 701.
- the present invention is in this context and aims to provide a vacuum pump rotary type, with an advanced lubrication system.
- the pump of the invention is essentially characterized in that it comprises an oil circuit under pressure itself comprising a channel arranged in the bottom of the bore and an excavated groove in the rotor, communicating both with the channel and with each radial housing to bring oil under pressure on the second edge of each pallet, in that the rotor is hollow, and in that the cylinder enters the rotor, which results in each pallet coming selectively in contact by its second edge with the cylinder and cooperates with it to form in the rotor at least one compression chamber and one expansion chamber, the oil thus exerting a centrifugal radial thrust on the pallets and being forced to circulate from the compression chamber to the expansion chamber.
- the cylinder coaxial with the cylindrical wall of the bore is secured to the cover
- the invention relates to a rotary pump which can be used as a pneumatic vacuum pump, essentially comprising a stator 1, a rotor 2, and two vanes 3 and 4.
- the stator 1 is pierced with a bore 11 delimited by a bottom 111, and by a cover 112, and by a cylindrical side wall 113 having a relatively large radius R 1 .
- An air intake inlet 12 and an air outlet outlet 13 open into the bore 11.
- the rotor 2 is itself cylindrical, hollow, disposed inside the bore 11, in contact tangent and tight with the latter, and equipped with a coaxial drive shaft 23, the shaft 23 crossing the bottom 111 of the stator and having a driving relief 24 accessible outside the bore, so as to allow the rotor to rotate about an axis X, offset from bore 11.
- the two pallets 3 and 4 are identical, slidingly housed in radial housings respective 25, 26 of the rotor, and integral in rotation with this rotor, each pallet having a width defined between first and second edges 31, 32, 41, 42, and the first being in support on the side wall 113 of the bore.
- This pump has a pressurized oil circuit comprising a channel 5 arranged in the bottom of the bore and a groove 6 hollowed out in the rotor, communicating with both the channel 5 and with each radial housing 25, 26 for bringing pressurized oil to the second edge 32, 42 of each pallet 3, 4.
- each pallet 3, 4 selectively comes into contact by its second edge 32, 42 with the cylinder 7 and cooperates with it to form in the rotor at least one chamber compression 8 and an expansion chamber 9, the oil thus exerting a radial thrust centrifugal on the pallets and being forced to flow from the compression chamber to the expansion chamber.
- the cylinder 7, coaxial with the cylindrical wall 113 of the bore is preferably secured to the cover 112.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
- la figure 1 est une vue en coupe d'une pompe conforme à l'invention, la coupe étant réalisée perpendiculairement à l'axe de rotation du rotor, et le rotor étant présenté dans une première position;
- la figure 2 est une vue en coupe d'une pompe conforme à l'invention, la coupe étant réalisée perpendiculairement à l'axe de rotation du rotor, et le rotor étant présenté dans une seconde position;
- la figure 3 est une vue en coupe selon la ligne 3-3 de la figure 1; et
- la figure 4 est une vue en coupe axiale du rotor.
Claims (2)
- Pompe rotative comprenant : un stator (1) percé d'un alésage (11) délimité par un fond (111), par un couvercle (112), et par une paroi latérale cylindrique (113) présentant un rayon relativement grand (R1); un rotor cylindrique (2), disposé dans l'alésage (11), tangent à la paroi latérale cylindrique, et susceptible d'être entraíné en rotation autour d'un axe (X) excentré par rapport à cet alésage; au moins deux palettes identiques (3, 4) logées à coulissement dans des logements radiaux (25, 26) du rotor (2) et solidaires en rotation de ce rotor, chaque palette présentant une largeur définie entre des premier et second bords (31, 32, 41, 42) dont le premier (31, 41) est en appui sur la paroi latérale (113) de l'alésage; et un cylindre (7) coaxial avec la paroi cylindrique (113) de l'alésage et présentant un rayon relativement petit (R0), la largeur de chaque palette (3, 4) étant sensiblement égale à la différence entre les rayons relativement grand et petit, caractérisée en ce qu'elle comprend un circuit d'huile sous pression comprenant lui-même un canal (5) aménagé dans le fond de l'alésage et une gorge (6) creusée dans le rotor, communiquant à la fois avec le canal (5) et avec chaque logement radial (25, 26) pour amener de l'huile sous pression sur le second bord (32, 42) de chaque palette, en ce que le rotor (2) est creux, et en ce que le cylindre (7) pénètre dans le rotor, ce dont il résulte que chaque palette vient sélectivement en contact par son second bord avec le cylindre et coopère avec lui pour former dans le rotor au moins une chambre de compression (8) et une chambre de dilatation (9), l'huile exerçant ainsi une poussée radiale centrifuge sur les palettes et étant forcée à circuler de la chambre de compression vers la chambre de dilatation.
- Pompe rotative suivant la revendication 1, caractérisée en ce que le cylindre (7) coaxial avec la paroi cylindrique de l'alésage est solidaire du couvercle (112).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT95TO000737A IT1281346B1 (it) | 1995-09-18 | 1995-09-18 | Pompa rotativa con camera di compressione d'olio |
ITTO950737 | 1995-09-18 | ||
PCT/EP1996/003942 WO1997011277A1 (fr) | 1995-09-18 | 1996-09-09 | Pompe rotative a palettes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0851980A1 EP0851980A1 (fr) | 1998-07-08 |
EP0851980B1 true EP0851980B1 (fr) | 2000-01-19 |
Family
ID=11413812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96931052A Expired - Lifetime EP0851980B1 (fr) | 1995-09-18 | 1996-09-09 | Pompe rotative a palettes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0851980B1 (fr) |
JP (1) | JPH11512506A (fr) |
DE (1) | DE69606315T2 (fr) |
ES (1) | ES2141532T3 (fr) |
IT (1) | IT1281346B1 (fr) |
WO (1) | WO1997011277A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6166671B2 (ja) * | 2014-02-21 | 2017-07-19 | 大豊工業株式会社 | ベーンポンプ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2026739A (en) * | 1933-04-08 | 1936-01-07 | James P Johnson | Pump |
GB480522A (en) * | 1936-05-23 | 1938-02-23 | Bendix Aviat Corp | A new or improved rotary vacuum pump |
US3187679A (en) * | 1963-06-10 | 1965-06-08 | Scognamillo Frank | Rotary machine |
FR1376713A (fr) * | 1963-09-17 | 1964-10-31 | Perfectionnement aux moteurs rotatifs | |
JPS57159990A (en) * | 1981-03-27 | 1982-10-02 | Hitachi Ltd | Movable vane type rotary compressor |
US4493626A (en) * | 1982-07-22 | 1985-01-15 | Mitsubishi Denki Kabushiki Kaisha | Auxiliary radially shifting mechanism for vanes in a pump of the vane type |
JPS62170701A (ja) * | 1986-01-22 | 1987-07-27 | Agency Of Ind Science & Technol | ベ−ンモ−タ |
-
1995
- 1995-09-18 IT IT95TO000737A patent/IT1281346B1/it active IP Right Grant
-
1996
- 1996-09-09 DE DE69606315T patent/DE69606315T2/de not_active Expired - Lifetime
- 1996-09-09 WO PCT/EP1996/003942 patent/WO1997011277A1/fr active IP Right Grant
- 1996-09-09 EP EP96931052A patent/EP0851980B1/fr not_active Expired - Lifetime
- 1996-09-09 JP JP9512356A patent/JPH11512506A/ja active Pending
- 1996-09-09 ES ES96931052T patent/ES2141532T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH11512506A (ja) | 1999-10-26 |
DE69606315T2 (de) | 2000-05-18 |
ITTO950737A1 (it) | 1997-03-18 |
ES2141532T3 (es) | 2000-03-16 |
EP0851980A1 (fr) | 1998-07-08 |
ITTO950737A0 (it) | 1995-09-18 |
DE69606315D1 (de) | 2000-02-24 |
IT1281346B1 (it) | 1998-02-18 |
WO1997011277A1 (fr) | 1997-03-27 |
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