EP0882893B1 - Machine a déplacement de fluide du type scroll - Google Patents

Machine a déplacement de fluide du type scroll Download PDF

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Publication number
EP0882893B1
EP0882893B1 EP98401316A EP98401316A EP0882893B1 EP 0882893 B1 EP0882893 B1 EP 0882893B1 EP 98401316 A EP98401316 A EP 98401316A EP 98401316 A EP98401316 A EP 98401316A EP 0882893 B1 EP0882893 B1 EP 0882893B1
Authority
EP
European Patent Office
Prior art keywords
disc
fixed
mobile
frame
shoe
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
EP98401316A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0882893A2 (fr
EP0882893A3 (fr
Inventor
Benoít Barthod
Jean-Pierre Chicherie
Patrick Philippe
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel 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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0882893A2 publication Critical patent/EP0882893A2/fr
Publication of EP0882893A3 publication Critical patent/EP0882893A3/fr
Application granted granted Critical
Publication of EP0882893B1 publication Critical patent/EP0882893B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps

Definitions

  • the present invention relates to a fluid displacement machine of the Scroll type comprising a fixed disc comprising a spiral working wall and a movable disc also comprising a spiral working wall cooperating with that of the fixed disc, drive means of the disc mobile in a circular translational movement, the axial positioning of the movable disc being effected by a pad system rubbing between two stops side, one of the two bodies, shoe or side stops being integral with a fixed frame and the other of said movable disc.
  • the present invention aims to overcome these drawbacks and it has for object a machine as defined above, characterized in that the fixed disc is linked on the opposite side to the movable disc to a fixed central shaft linked to the frame, and comprising a discharge channel, said central shaft being surrounded a sealing bellows connected at one end to the frame and at its other end to a connecting flange connected, by its periphery, around the fixed disc, to the disc movable beyond its spiral wall, the movable disc and the flange forming a housing enclosing the fixed disc, the space between the bellows and said central shaft constituting a suction duct, and in that said positioning system axial of the movable disc is located outside the internal volume of said housing, said member secured to the movable disc, shoe or lateral stops being secured to said housing and projecting outwardly.
  • Figure 3 shows the machine at the end, on the side of the mobile disc having removed the casing.
  • Figure 4 is a partial sectional view along IV-IV of Figure 3, and the FIG. 5 is a partial sectional view along V-V of FIG. 4.
  • a fluid displacement machine Scroll type according to the invention.
  • Such a machine is particularly good suitable to operate as a vacuum pump but can operate as compressor or liquid fluid pump.
  • This frame contains the whole machine and in particular its active pumping parts comprising a fixed disc 2 comprising conventionally a working wall 3 in a spiral, and a movable disc 4 also comprising a spiral working wall 5 cooperating with that of the fixed disc. These two spirals, with their disc, define a volume of work 6.
  • the fixed disc 2 is linked, on the opposite side to the movable disc 4, to the frame 1 by a fixed central shaft 7.
  • This central shaft 7 is hollow and thus comprises a channel 8 constituting a discharge channel connected to a discharge outlet 9.
  • the movable disc 4 is connected by its periphery, beyond its wall in spiral 5, and around the fixed disc 2, at the periphery of a connecting flange 10.
  • This connecting flange 10, with the movable disc 4 constitutes a sealed housing enclosing the fixed disc 2.
  • the central part of the flange 10 is open and leaves pass the fixed central shaft 7. Furthermore, this central part of the flange is fixed in a sealed manner, both to an eccentric hollow axis 11 and to one end of a sealing bellows 12, the other end of which is fixed to the frame 1 at the end of the fixed central shaft 7.
  • This bellows 12 surrounds the fixed central shaft 7.
  • the space 13 between the sealing bellows 12 and the fixed central shaft 7 constitutes a suction channel connected to a suction inlet 14.
  • the eccentric hollow axis 11 journals in a bore 15 made in a rotary main shaft 16 with axis 17.
  • the bore 15 has its axis 18 offset by relative to the axis 17 of rotation of the rotary main shaft 16.
  • the rotation of the shaft main rotary 16 thus causes, associated with an anti-rotation means any, a circular translation movement, without rotation, of the axis offset 11 and attached parts: the connecting flange 10 and the disc mobile 4.
  • an Oldham 19 seal prevents rotation of the movable disc 4.
  • the rotary main shaft 16 is hollow and surrounds the sealing bellows 10. It is supported by bearings 20, 21 in the frame 1.
  • the rotary main shaft 16 is driven in rotation by an electric motor whose rotor 22 is mounted integral with the shaft 16 and is separated from the stator 23 by a tubular sealing jacket 24.
  • the movable disc 4 is axially precisely positioned by a friction shoe system 25 between two lateral stops 26, 27.
  • the shoe 25 forms a fixed circular ring linked to the frame 1 between the parts 1A and 1B and the lateral stops 26 and 27 belong respectively to the connecting flange 1 and to the movable disc 4.
  • These lateral stops 26 and 27 form two rings externally exceeding the internal volume of the mobile case constituted by the flange 10 and the movable disc 4 linked by screws 28 with interposition of a shim of thickness 29 mounted with seals 30 and 31.
  • the thickness of the shim 29 corresponds to that of the shoe 25, apart from the clearance necessary for friction between the pad 25 and the lateral stops 26 and 27.
  • Figure 2 shows a variant in which the axial positioning of the movable disc 4 by friction shoe between two stops lateral is here performed by a movable shoe 32 linked to the housing 4-10A.
  • This skate is disc-shaped washer with holes 33 for oil passage and, in on the other hand, it rubs between two fixed lateral stops, linked to the frame 1: a stop 34 and a stopper 35. Precise adjustment of the axial positioning of the disc mobile 4 is here effected by the choice of the stopper 35.
  • the stopper 34 and the stopper 35 are also disc-shaped.
  • the device for immobilizing the disc in rotation mobile 4 by Oldham gasket 19 is here located between the connecting flange 10A and the frame 1A and not, as in Figure 1, between the disc 4 and the frame 1B.
  • This new arrangement makes it possible to immediately reach mobile disk 4 without other disassembly than part 1B of the frame 1.
  • the frame is built in three parts: 1A, 1B and 1C.
  • Figures 3, 4 and 5 describe another variant relative to the axial positioning system.
  • the skate is linked to the part mobile 4-10A as in figure 2.
  • the only difference is in the shape of the skate and the constitution of the lateral stops linked to the frame 1.
  • Figure 3 is an end view of the machine, corresponding to a view on the left in Figure 2 with part 1B of the frame removed, and of course, with the shoe and side stops corresponding to the new variant.
  • the movable shoe 36 has the shape of a disc-washer having an inner circumference 37 circular, but whose outer perimeter comprises, at 90 °, four protrusions 38 forming a wiper each taken in sandwich between two lateral stops 39 and the wedge stop 40.
  • the stops lateral 39 and shim stops 40 are in the form of bars.
  • the two stops 39 and 40 are fixed to part 1A of the frame by two screws 41 with a separation between the two shims by means of two small tubes 42 crossed by the screws 41 and whose thickness corresponds, to the clearance necessary for free friction, to the thickness of the protrusions 38 of the shoe 36.
  • the precise adjustment of the axial position of the movable disc 4 is carried out by the choice of the thickness of the shim stops 40.
  • the shoe 36 is a separate piece, independent of the mobile disc 4 and connecting flange 10A. We can very well however integrate the pad into the connecting flange 10A or else into the movable disc 4.
  • the shoe is located outside the diameter of the fixed disc 2 and of the mobile disc 4, therefore over a large diameter, this facilitates the parallelism of the two discs, which is not the case for previous document cited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP98401316A 1997-06-05 1998-06-02 Machine a déplacement de fluide du type scroll Expired - Lifetime EP0882893B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9706966 1997-06-05
FR9706966A FR2764346B1 (fr) 1997-06-05 1997-06-05 Machine a deplacement de fluide du type scroll

Publications (3)

Publication Number Publication Date
EP0882893A2 EP0882893A2 (fr) 1998-12-09
EP0882893A3 EP0882893A3 (fr) 1999-02-24
EP0882893B1 true EP0882893B1 (fr) 2003-04-23

Family

ID=9507642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401316A Expired - Lifetime EP0882893B1 (fr) 1997-06-05 1998-06-02 Machine a déplacement de fluide du type scroll

Country Status (5)

Country Link
US (1) US6050793A (ja)
EP (1) EP0882893B1 (ja)
JP (1) JP4160161B2 (ja)
DE (1) DE69813672T2 (ja)
FR (1) FR2764346B1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10031141B4 (de) * 2000-06-27 2006-06-29 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Spiralkörper
DE10031142B4 (de) * 2000-06-27 2006-09-07 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Spiralverdichter und Verwendung eines Spiralverdichters
US8622724B2 (en) * 2009-09-25 2014-01-07 Agilent Technologies, Inc. Scroll pump with isolation barrier
US9404491B2 (en) * 2013-03-13 2016-08-02 Agilent Technologies, Inc. Scroll pump having bellows providing angular synchronization and back-up system for bellows
US9328730B2 (en) * 2013-04-05 2016-05-03 Agilent Technologies, Inc. Angular synchronization of stationary and orbiting plate scroll blades in a scroll pump using a metallic bellows
US9366255B2 (en) 2013-12-02 2016-06-14 Agilent Technologies, Inc. Scroll vacuum pump having external axial adjustment mechanism
FR3044348B1 (fr) * 2016-06-17 2017-11-24 Somega Du Centre Pompe volumetrique, notamment a piston ou a vis a mouvement excentre comportant un dispositif d'etancheite rigoureuse
GB2595283B (en) 2020-05-21 2022-11-02 Edwards Ltd Scroll pump

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1210922A (fr) * 1958-09-12 1960-03-11 Alsacienne Constr Meca Dispositif de capsulisme pour détendeurs, compresseurs ou analogues
FR2141402B1 (ja) * 1971-06-01 1973-06-29 Vulliez Paul
FR2153129B2 (ja) * 1971-06-01 1974-01-04 Vulliez Paul
US4383805A (en) * 1980-11-03 1983-05-17 The Trane Company Gas compressor of the scroll type having delayed suction closing capacity modulation
US4677949A (en) * 1985-08-19 1987-07-07 Youtie Robert K Scroll type fluid displacement apparatus
US5167494A (en) * 1989-01-31 1992-12-01 Nippon Soken Inc. Scroll type compressor with axially supported movable scroll
US5354184A (en) * 1992-02-20 1994-10-11 Arthur D. Little, Inc. Windage loss reduction arrangement for scroll fluid device
JPH074366A (ja) * 1993-06-17 1995-01-10 Zexel Corp スクロール型コンプレッサ

Also Published As

Publication number Publication date
DE69813672T2 (de) 2004-03-04
EP0882893A2 (fr) 1998-12-09
EP0882893A3 (fr) 1999-02-24
JP4160161B2 (ja) 2008-10-01
FR2764346B1 (fr) 1999-07-30
US6050793A (en) 2000-04-18
JPH1150980A (ja) 1999-02-23
FR2764346A1 (fr) 1998-12-11
DE69813672D1 (de) 2003-05-28

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