EP0882892B1 - Scroll type machine - Google Patents

Scroll type machine Download PDF

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Publication number
EP0882892B1
EP0882892B1 EP98401314A EP98401314A EP0882892B1 EP 0882892 B1 EP0882892 B1 EP 0882892B1 EP 98401314 A EP98401314 A EP 98401314A EP 98401314 A EP98401314 A EP 98401314A EP 0882892 B1 EP0882892 B1 EP 0882892B1
Authority
EP
European Patent Office
Prior art keywords
fixed
disc
machine according
mobile
bellows
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
EP98401314A
Other languages
German (de)
French (fr)
Other versions
EP0882892A1 (en
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
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Publication date
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Publication of EP0882892A1 publication Critical patent/EP0882892A1/en
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Publication of EP0882892B1 publication Critical patent/EP0882892B1/en
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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
    • 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
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
    • 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 machine of the Scroll type.
  • the invention applies to machines of the Scroll type functioning as a vacuum pump, but may also be suitable as liquid pump or as compressor.
  • the object of the invention is to produce a machine with a collected volume, the as small as possible, and with an absolute seal between the parties mechanical and fluid circuit.
  • EP 0 728 947 describes a machine of the Scroll type comprising on the one hand a fixed disk equipped with a spiral and on the other hand a mobile disk equipped with a spiral and animated with a circular translational movement and in which the seal between the fluid circuit and the drive parts mechanically is effected by a bellows bound at one end to a fixed part of the machine and at the other end to the moving disk undergoing the movement of circular translation.
  • the drive motor is located in end, which considerably lengthens the machine and also, the bellows sealing also supports torsional forces.
  • US 3,817,664 also discloses a machine of this kind with also a seal with a bellows also undergoing twisting efforts and again the drive system greatly lengthens the machine.
  • EP 0 428 729 describes a machine very more picked up: there is no output shaft driven by a motor, but this one is located inside the crankcase of the machine. In this machine, both discs, each equipped with a spiral, are driven in rotation. One, the motor disk is driven by the motor integrated in the housing and the other, which is off-center, is driven by an Oldham joint coupling maintains the relative angular orientation of the two discs. However, here, there is no sealing system between the circuit of fluid and mechanical drive.
  • Document DE 22 25 327 A describes a machine of the Scroll type comprising the features defined in the preamble of claim 1.
  • this machine drive means are located on the side.
  • the object of the present invention is to propose a very machine picked up, with an absolute seal between the mechanical parts and the circuit of fluid.
  • the subject of the invention is therefore a fluid displacement machine of the Scroll type having a fixed disk comprising a spiral work wall and a movable disc, also comprising a spiral work wall cooperating with that of the fixed disc, means for driving the disc movable in a circular translational movement, a sealed sealing bellows on the one hand at one of its ends to an organ related to the translational movement circular disk of the mobile disk and secondly, at its other end, to a part machine, said bellows separating the fluid circuit, parts mechanical drive of the mobile disk, the disk stationary is connected on the opposite side to the mobile disk to a fixed central shaft, comprising a discharge channel, said fixed central shaft being surrounded by said bellows, characterized in that the space between said bellows and said fixed central shaft constituting a conduit in that a hollow rotary main shaft surrounds said bellows and is carried by at least one bearing in a fixed frame, one end of said main shaft having an eccentric circular bore cooperating with an organ drive related to the mobile disk; said training means comprising an electric motor
  • a fluid displacement machine is seen Scroll type according to the invention.
  • Such a machine is particularly well adapted to operate as a vacuum pump, but can work as compressor or as fluid pump. It includes a fixed frame 1 in three parts assembled: a housing 1A, and a body in two parts 1B and 1C. AT this frame is fixed a manifold 2 equipped with a suction flange 3 and a flange of repression 4.
  • This frame encloses the whole of the machine and in particular its parts pumping stations located in the housing 1A and comprising a fixed disk 5 comprising a spiral wall 6 and a movable disk 7 also comprising a spiral wall 8 cooperating with that of the fixed disc.
  • a fixed disk 5 comprising a spiral wall 6
  • a movable disk 7 also comprising a spiral wall 8 cooperating with that of the fixed disc.
  • the fixed disk 5 is connected, on the opposite side to the mobile disk 7, to the frame 1 by a fixed central shaft 10 which, in the example described, is monoblock with the part 1C of the body of the frame 1.
  • This fixed central shaft 10 is hollow and contains a tubing 11 discharge ending in a discharge compartment 12 of the manifold 2 to which the discharge flange 4 is attached.
  • the mobile disk 7 is connected by its periphery, beyond its wall in 8 and around the fixed disc 5, at the periphery of a connecting flange 13.
  • This connecting flange 13, with the mobile disk 7, constitutes a sealed housing enclosing the fixed disk 5.
  • the central portion of the flange 13 is open and leaves pass the central fixed shaft 10.
  • This central part of the flange 13 is connected, or, as in the case of the figure, is integral with an eccentric hollow shaft 14 itself fixed so at one end of a sealing bellows 15 surrounding the central shaft fixed and the other end is fixed to the part 1C of the body of the frame 1.
  • the space 16 between the sealing bellows 15 and the fixed central shaft 10 constitutes a suction channel communicating with a suction compartment 17 of the manifold 2 to which is fixed the suction flange 3.
  • the eccentric hollow shaft 14 is journalled in a bore 18 made in a rotating main shaft 19 of axis 20.
  • the bore 18 has its axis 21 eccentric by relative to the axis of rotation of the rotary main shaft 19.
  • the rotation of the shaft rotating main 19 thus causes, associated with an anti-rotation means any, a translational movement circular, without rotation of the axis eccentric 14 and thus the connecting flange 13 and the mobile disc 7.
  • this anti-rotation is provided by a seal of Oldham 22, located between the connecting flange 13 and the part 1B of the body of the frame 1 which prevents any rotation of the mobile disc 7 and its connecting flange 13.
  • the rotary main shaft 19 is hollow and surrounds the sealing bellows 15. It is supported by bearings 23 and 24 respectively mounted in the part 1B and the part 1 C of the body of the frame 1.
  • the rotational drive of this main rotary shaft 19 is carried out by an electric motor whose rotor 25 is connected to the shaft 19 and whose stator 26 is connected to the frame 1.
  • a tubular sealing sleeve 27 separates the stator 26 from all moving parts.
  • the mobile disc 7, linked to the connecting flange 13 is positioned axially accurately by a pad system 28 rubbing between two lateral stops 29, 30.
  • the shoe 28 forms a circular ring, connected to the housing 7-13 (movable disk 7, connecting flange 13) and surrounding externally this housing and it rubs between the two fixed lateral abutments linked to the frame 1: the abutment 29 and a stop-shim 30.
  • the precise adjustment of the axial positioning of the disk 7 is made by the choice of the thickness of the stop-shim 30.
  • the pad 28 has holes 31 of oil passage.
  • Such a machine is thus perfectly suitable as a vacuum pump clean and dry.
  • FIG. 2 is a variant in which the rotary main shaft 19, contrary to Figure 1 is mounted cantilever on a single bearing 32, prestressed, with two rows of balls mounted in part 1B of the body of the frame. This simplifies the pump.
  • collector 2 has not been shown as well as the housing 1A, the discs 5, 7 and the axial positioning.
  • FIG. 3 is another variant in which, as in FIG. the rotary main shaft 19 is cantilevered on a single bearing 32; but in addition, the eccentric hollow shaft 14 is mounted in the eccentric bore 18 of axis 21 of the rotary main shaft 19 via a roller bearing with needles 33.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Description

La présente invention concerne une machine du type Scroll.The present invention relates to a machine of the Scroll type.

En particulier, l'invention s'applique aux machines du type Scroll fonctionnant comme pompe à vide, mais pouvant également convenir comme pompe à liquide ou comme compresseur.In particular, the invention applies to machines of the Scroll type functioning as a vacuum pump, but may also be suitable as liquid pump or as compressor.

Le but de l'invention est de réaliser une machine au volume ramassé, le plus réduit possible, et comportant une étanchéité absolue entre les parties mécaniques et le circuit de fluide.The object of the invention is to produce a machine with a collected volume, the as small as possible, and with an absolute seal between the parties mechanical and fluid circuit.

Le document EP 0 728 947 décrit une machine du type Scroll comportant d'une part un disque fixe équipé d'une spirale et d'autre part un disque mobile équipé d'une spirale et animé d'un mouvement de translation circulaire et dans laquelle l'étanchéité entre le circuit de fluide et les parties d'entraínement mécanique est effectuée par un soufflet lié, à une extrémité, à une partie fixe de la machine et à l'autre extrémité au disque mobile subissant le mouvement de translation circulaire. Dans cette machine, le moteur d'entraínement est situé en bout, ce qui allonge considérablement la machine et par ailleurs, le soufflet d'étanchéité supporte en outre des efforts de torsion.EP 0 728 947 describes a machine of the Scroll type comprising on the one hand a fixed disk equipped with a spiral and on the other hand a mobile disk equipped with a spiral and animated with a circular translational movement and in which the seal between the fluid circuit and the drive parts mechanically is effected by a bellows bound at one end to a fixed part of the machine and at the other end to the moving disk undergoing the movement of circular translation. In this machine, the drive motor is located in end, which considerably lengthens the machine and also, the bellows sealing also supports torsional forces.

Le document américain 3 817 664 décrit également une machine de ce genre avec aussi une étanchéité avec un soufflet subissant également des efforts de torsion et là encore, le système d'entraínement allonge beaucoup la machine.US 3,817,664 also discloses a machine of this kind with also a seal with a bellows also undergoing twisting efforts and again the drive system greatly lengthens the machine.

Le document EP 0 428 729 décrit en revanche une machine beaucoup plus ramassée : il n'y a pas d'arbre de sortie entraíné par un moteur, mais celui-ci est situé à l'intérieur du carter de la machine. Dans cette machine, les deux disques, équipés chacun d'une spirale, sont entraínés en rotation. L'un, le disque moteur est entraíné par le moteur intégré au carter et l'autre, qui est désaxé, est entraíné par l'intermédiaire d'un accouplement à joint d'Oldham qui permet de maintenir en permanence l'orientation angulaire relative des deux disques. Cependant, ici, il n'y a pas de système d'étanchéité entre le circuit de fluide et l'entraínement mécanique.EP 0 428 729, on the other hand, describes a machine very more picked up: there is no output shaft driven by a motor, but this one is located inside the crankcase of the machine. In this machine, both discs, each equipped with a spiral, are driven in rotation. One, the motor disk is driven by the motor integrated in the housing and the other, which is off-center, is driven by an Oldham joint coupling maintains the relative angular orientation of the two discs. However, here, there is no sealing system between the circuit of fluid and mechanical drive.

Le document DE 22 25 327 A décrit une machine du type Scroll comprenant les caractéristiques définis dans le préambule de la revendication 1. Dans cette machine les moyens d'entraínement sont situés sur le côté.Document DE 22 25 327 A describes a machine of the Scroll type comprising the features defined in the preamble of claim 1. In this machine drive means are located on the side.

La présente invention a pour but de proposer une machine très ramassée, avec une étanchéité absolue entre les parties mécaniques et le circuit de fluide.The object of the present invention is to propose a very machine picked up, with an absolute seal between the mechanical parts and the circuit of fluid.

L'invention a ainsi pour objet une machine à déplacement de fluide du type Scroll comportant un disque fixe comprenant une paroi de travail en spirale et un disque mobile, comprenant également une paroi de travail en spirale coopérant avec celle du disque fixe, des moyens d'entraínement du disque mobile dans un mouvement de translation circulaire, un soufflet d'étanchéité lié d'une part à une de ses extrémités à un organe lié au mouvement de translation circulaire du disque mobile et d'autre part, à son autre extrémité, à une partie fixe de la machine, ledit soufflet séparant le circuit de fluide, des parties mécaniques d'entraínement du disque mobile, le disque fixe est lié du côté opposé au disque mobile à un arbre central fixe, comportant un canal de refoulement, ledit arbre central fixe étant entouré dudit soufflet, caractérisée en ce que l'espace entre ledit soufflet et ledit arbre central fixe constituant un conduit d'aspiration, en ce qu'un arbre principal rotatif, creux, entoure ledit soufflet et est porté par au moins un palier dans un bâti fixe, une extrémité dudit arbre principal comportant un alésage circulaire excentré coopérant avec un organe d'entraínement lié au disque mobile; lesdits moyens d'entraínement comportant un rotor de moteur électrique lié audit arbre principal rotatif et l'entourant, et un stator fixe entourant ledit rotor.The subject of the invention is therefore a fluid displacement machine of the Scroll type having a fixed disk comprising a spiral work wall and a movable disc, also comprising a spiral work wall cooperating with that of the fixed disc, means for driving the disc movable in a circular translational movement, a sealed sealing bellows on the one hand at one of its ends to an organ related to the translational movement circular disk of the mobile disk and secondly, at its other end, to a part machine, said bellows separating the fluid circuit, parts mechanical drive of the mobile disk, the disk stationary is connected on the opposite side to the mobile disk to a fixed central shaft, comprising a discharge channel, said fixed central shaft being surrounded by said bellows, characterized in that the space between said bellows and said fixed central shaft constituting a conduit in that a hollow rotary main shaft surrounds said bellows and is carried by at least one bearing in a fixed frame, one end of said main shaft having an eccentric circular bore cooperating with an organ drive related to the mobile disk; said training means comprising an electric motor rotor connected to and surrounding said rotary main shaft, and a fixed stator surrounding said rotor.

On va maintenant donner la description d'un exemple de mise en oeuvre de l'invention en se reportant au dessin annexé dans lequel :

  • La figure 1 représente en coupe axiale une machine à déplacement de fluide du type Scroll selon l'invention.
  • La figure 2 est une vue partielle d'une variante de l'invention. Sur cette figure, la partie active de pompage : disques fixe et mobile avec le carter les enfermant, est omise.
  • La figure 3 est une autre variante, la partie active de pompage étant également omise.
    • An embodiment of the invention will now be described with reference to the appended drawing in which:
  • FIG. 1 shows in axial section a Scroll-type fluid displacement machine according to the invention.
  • Figure 2 is a partial view of a variant of the invention. In this figure, the active pumping part: fixed and mobile discs with the casing enclosing them, is omitted.
  • Figure 3 is another variant, the active pumping part being also omitted.

    • En se référant à la figure 1, on voit une machine à déplacement de fluide de type Scroll selon l'invention. Une telle machine est particulièrement bien adaptée pour fonctionner comme pompe à vide, mais peut fonctionner comme compresseur ou comme pompe à fluide liquide. Elle comprend un bâti fixe 1 en trois parties assemblées : un carter 1A, et un corps en deux parties 1B et 1C. A ce bâti est fixé un collecteur 2 équipé d'une bride d'aspiration 3 et d'une bride de refoulement 4.Referring to FIG. 1, a fluid displacement machine is seen Scroll type according to the invention. Such a machine is particularly well adapted to operate as a vacuum pump, but can work as compressor or as fluid pump. It includes a fixed frame 1 in three parts assembled: a housing 1A, and a body in two parts 1B and 1C. AT this frame is fixed a manifold 2 equipped with a suction flange 3 and a flange of repression 4.

    Ce bâti renferme l'ensemble de la machine et en particulier ses parties actives de pompage situées dans le carter 1A et comprenant un disque fixe 5 comprenant une paroi en spirale 6 et un disque mobile 7 comprenant également une paroi en spirale 8 coopérant avec celle du disque fixe. Ces deux parois en spirale 6 et 8 avec leur disque délimitent un volume de travail 9. This frame encloses the whole of the machine and in particular its parts pumping stations located in the housing 1A and comprising a fixed disk 5 comprising a spiral wall 6 and a movable disk 7 also comprising a spiral wall 8 cooperating with that of the fixed disc. These two walls in spiral 6 and 8 with their disk delimit a volume of work 9.

    Le disque fixe 5 est lié, du côté opposé au disque mobile 7, au bâti 1 par un arbre central fixe 10 qui, dans l'exemple décrit, est monobloc avec la partie 1C du corps du bâti 1. Cet arbre central fixe 10 est creux et contient une tubulure 11 de refoulement aboutissant dans un compartiment de refoulement 12 du collecteur 2 auquel est fixée la bride de refoulement 4.The fixed disk 5 is connected, on the opposite side to the mobile disk 7, to the frame 1 by a fixed central shaft 10 which, in the example described, is monoblock with the part 1C of the body of the frame 1. This fixed central shaft 10 is hollow and contains a tubing 11 discharge ending in a discharge compartment 12 of the manifold 2 to which the discharge flange 4 is attached.

    Le disque mobile 7 est relié par sa périphérie, au delà de sa paroi en spirale 8 et autour du disque fixe 5, à la périphérie d'un flasque de liaison 13. Ce flasque de liaison 13, avec le disque mobile 7, constitue un boítier étanche enfermant le disque fixe 5. La partie centrale du flasque 13 est ouverte et laisse passer l'arbre central fixe 10.The mobile disk 7 is connected by its periphery, beyond its wall in 8 and around the fixed disc 5, at the periphery of a connecting flange 13. This connecting flange 13, with the mobile disk 7, constitutes a sealed housing enclosing the fixed disk 5. The central portion of the flange 13 is open and leaves pass the central fixed shaft 10.

    Cette partie centrale du flasque 13 est liée, ou bien, comme dans le cas de la figure, est monobloc avec un axe creux excentré 14 lui-même fixé de façon étanche à une extrémité d'un soufflet d'étanchéité 15 entourant l'arbre central fixe 10 et dont l'autre extrémité est fixée à la partie 1C du corps du bâti 1.This central part of the flange 13 is connected, or, as in the case of the figure, is integral with an eccentric hollow shaft 14 itself fixed so at one end of a sealing bellows 15 surrounding the central shaft fixed and the other end is fixed to the part 1C of the body of the frame 1.

    L'espace 16 entre le soufflet d'étanchéité 15 et l'arbre central fixe 10 constitue un canal d'aspiration communiquant avec un compartiment d'aspiration 17 du collecteur 2 auquel est fixée la bride d'aspiration 3.The space 16 between the sealing bellows 15 and the fixed central shaft 10 constitutes a suction channel communicating with a suction compartment 17 of the manifold 2 to which is fixed the suction flange 3.

    L'axe creux excentré 14 tourillonne dans un alésage 18 effectué dans un arbre principal rotatif 19 d'axe 20. L'alésage 18 a son axe 21 excentré par rapport à l'axe 20 de rotation de l'arbre principal rotatif 19. La rotation de l'arbre principal rotatif 19 provoque ainsi, associé à un moyen d'anti-rotation quelconque, un mouvement de translation circulaire, sans rotation de l'axe excentré 14 et donc du flasque de liaison 13 et du disque mobile 7.The eccentric hollow shaft 14 is journalled in a bore 18 made in a rotating main shaft 19 of axis 20. The bore 18 has its axis 21 eccentric by relative to the axis of rotation of the rotary main shaft 19. The rotation of the shaft rotating main 19 thus causes, associated with an anti-rotation means any, a translational movement circular, without rotation of the axis eccentric 14 and thus the connecting flange 13 and the mobile disc 7.

    Dans l'exemple décrit, cette anti-rotation est assurée par un joint de Oldham 22, situé entre le flasque de liaison 13 et la partie 1B du corps du bâti 1 qui empêche toute rotation du disque mobile 7 et de son flasque de liaison 13.In the example described, this anti-rotation is provided by a seal of Oldham 22, located between the connecting flange 13 and the part 1B of the body of the frame 1 which prevents any rotation of the mobile disc 7 and its connecting flange 13.

    L'arbre principal rotatif 19 est creux et entoure le soufflet d'étanchéité 15. Il est supporté par des roulements 23 et 24 montés respectivement dans la partie 1B et la partie 1 C du corps du bâti 1.The rotary main shaft 19 is hollow and surrounds the sealing bellows 15. It is supported by bearings 23 and 24 respectively mounted in the part 1B and the part 1 C of the body of the frame 1.

    L'entraínement en rotation de cet arbre rotatif principal 19 est effectué par un moteur électrique dont le rotor 25 est lié à l'arbre 19 et dont le stator 26 est lié au bâti 1. Une chemise d'étanchéité tubulaire 27 sépare le stator 26 de toutes les parties mobiles.The rotational drive of this main rotary shaft 19 is carried out by an electric motor whose rotor 25 is connected to the shaft 19 and whose stator 26 is connected to the frame 1. A tubular sealing sleeve 27 separates the stator 26 from all moving parts.

    Le disque mobile 7, lié au flasque de liaison 13 est positionné axialement de façon précise par un système de patin 28 frottant entre deux butées latérales 29, 30. The mobile disc 7, linked to the connecting flange 13 is positioned axially accurately by a pad system 28 rubbing between two lateral stops 29, 30.

    Dans l'exemple de la figure, le patin 28 forme un anneau circulaire, lié au boítier 7-13 (disque mobile 7, flasque de liaison 13) et entourant extérieurement ce boítier et il frotte entre les deux butées latérales fixes liées au bâti 1 : la butée 29 et une butée-cale 30. Le réglage précis du positionnement axial du disque mobile 7 est effectué par le choix de l'épaisseur de la butée-cale 30. Le patin 28 comporte des trous 31 de passage d'huile.In the example of the figure, the shoe 28 forms a circular ring, connected to the housing 7-13 (movable disk 7, connecting flange 13) and surrounding externally this housing and it rubs between the two fixed lateral abutments linked to the frame 1: the abutment 29 and a stop-shim 30. The precise adjustment of the axial positioning of the disk 7 is made by the choice of the thickness of the stop-shim 30. The pad 28 has holes 31 of oil passage.

    On pourrait très bien avoir le contraire : un patin fixe lié au bâti 1 pris en sandwich entre deux butées latérales liées au boítier mobile 7-13.We could very well have the opposite: a fixed skid related to the frame 1 taken in sandwich between two lateral stops connected to the mobile housing 7-13.

    On voit que, grâce au soufflet 15 et au boítier 7-13 enfermant le disque fixe 5, l'intégralité du circuit de pompage, depuis l'aspiration par la bride d'aspiration 3, jusqu'au refoulement par la bride de refoulement 4, est complètement isolée et étanche vis-à-vis de toutes les parties mécaniques telles que : roulements 23, 24, dispositif de positionnement axial à patin frottant (disposé extérieurement au boítier 7-13), et axe excentré 14 tourillonnant dans l'alésage excentré 18.We see that, thanks to the bellows 15 and the casing 7-13 enclosing the disk fixed 5, the entire pumping circuit, since the suction by the flange 3, up to discharge by the discharge flange 4, is completely insulated and waterproof vis-à-vis all mechanical parts such that: bearings 23, 24, axial positioning device with rubbing pad (arranged externally to the housing 7-13), and eccentric axis 14 journalling in the eccentric bore 18.

    Une telle machine convient ainsi parfaitement comme pompe à vide propre et sèche.Such a machine is thus perfectly suitable as a vacuum pump clean and dry.

    Les parties mécaniques citées ci-dessus, extérieures au circuit de fluide, sont lubrifiées.The mechanical parts mentioned above, external to the fluid circuit, are lubricated.

    Une telle machine est très ramassée et courte. Par ailleurs, le positionnement axial précis du disque mobile par rapport au disque fixe évite tout frottement à l'intérieur de la cellule de pompage entre une paroi en spirale et le disque opposé et donc évite les particules qui résulteraient d'un tel frottement.Such a machine is very picky and short. Moreover, Precise axial positioning of the mobile disk relative to the fixed disk avoids any friction inside the pumping cell between a spiral wall and the opposite disk and thus avoids the particles that would result from such friction.

    La figure 2 est une variante dans laquelle l'arbre principal rotatif 19, contrairement à la figure 1 est monté en porte à faux sur un seul roulement 32, précontraint, à deux rangées de billes montées dans la partie 1B du corps du bâti. Ceci simplifie la pompe. Dans cette figure, le collecteur 2 n'a pas été représenté ainsi que le carter 1A, les disques 5, 7 et le dispositif de positionnement axial.FIG. 2 is a variant in which the rotary main shaft 19, contrary to Figure 1 is mounted cantilever on a single bearing 32, prestressed, with two rows of balls mounted in part 1B of the body of the frame. This simplifies the pump. In this figure, collector 2 has not been shown as well as the housing 1A, the discs 5, 7 and the axial positioning.

    La figure 3 est une autre variante dans laquelle, comme dans la figure 2, l'arbre principal rotatif 19 est monté en porte à faux sur un seul roulement 32 ; mais en outre, l'axe creux excentré 14 est monté dans l'alésage excentré 18 d'axe 21 de l'arbre principal rotatif 19 par l'intermédiaire d'un palier à roulement à aiguilles 33.FIG. 3 is another variant in which, as in FIG. the rotary main shaft 19 is cantilevered on a single bearing 32; but in addition, the eccentric hollow shaft 14 is mounted in the eccentric bore 18 of axis 21 of the rotary main shaft 19 via a roller bearing with needles 33.

    Claims (8)

    1. A scroll type machine including a fixed disc (5) comprising a first spiral working wall (6) and a mobile disc (7) comprising a second spiral working wall (8) cooperating with that of the fixed disc, means for driving circular translation movement of the mobile disc, a sealing bellows (15) joined at one end to a member (14) fixed with respect to the circular translation movement of the mobile disc (7) and at its other end to a fixed part (1C) of the machine, said bellows (15) separating the fluid circuit from the mechanical parts driving the mobile disc, and the fixed disc (5) is joined on the side opposite the mobile disc (7) to a fixed central shaft (10) including a discharge passage (11), said central shaft being surrounded by said bellows (15), characterized in that the space (16) between said bellows and said fixed central shaft constituting [sic] a suction passage, in that a hollow main rotary shaft (19) surrounds said bellows (15) and is carried by at least one bearing (23, 24-32) in a fixed frame (1), one end of said main shaft (19) including an eccentric circular bore (18) cooperating with a drive member (14) joined to the mobile disc (7), said drive means including an electric motor rotor (25) joined to said main rotary shaft (19) and surrounding it and a fixed stator (26) surrounding said rotor.
    2. A machine according to claim 1 characterized in that a sealing jacket (27) separates the stator from the rotor of the drive motor.
    3. A machine according to either claim 1 or claim 2 characterized in that an Oldham joint (22) cooperates with a fixed part (1B) of the machine and with a part (13) undergoing said circular movement in translation to maintain a fixed angular orientation of the mobile disc (7) relative to the fixed disc (5).
    4. A machine according to any of claims 1 to 3 characterized in that said drive member (14) is attached to a connecting flange (13) joined at its periphery around the fixed disc (5) to the mobile disc (7) beyond the second spiral wall (8), the mobile disc (7) and the connecting flange (13) forming a casing enclosing the fixed disc (5).
    5. A machine according to claim 4 characterized in that said casing (7-13) is axially positioned externally of the internal volume of said casing by a system with a shoe (28) rubbing between two axial abutments (29, 30), one of these members, i.e. the shoe or the axial abutments, being attached to the frame and the other to said casing (7-13).
    6. A machine according to claim 4 characterized in that said drive member (14) and the connecting flange (13) are in one piece.
    7. A machine according to any of claims 1 to 6 characterized in that said main rotary shaft (19) is supported cantilever fashion in said frame (1B) by a single bearing (32).
    8. A machine according to any of the preceding claims characterized in that said driving member (14) cooperates with said eccentric circular bore (18) through the intermediary of a roller bearing (33).
    EP98401314A 1997-06-05 1998-06-02 Scroll type machine Expired - Lifetime EP0882892B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9706965A FR2764347B1 (en) 1997-06-05 1997-06-05 SCROLL TYPE MACHINE
    FR9706965 1997-06-05

    Publications (2)

    Publication Number Publication Date
    EP0882892A1 EP0882892A1 (en) 1998-12-09
    EP0882892B1 true EP0882892B1 (en) 2003-08-06

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98401314A Expired - Lifetime EP0882892B1 (en) 1997-06-05 1998-06-02 Scroll type machine

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    US (1) US6027317A (en)
    EP (1) EP0882892B1 (en)
    JP (1) JP4101932B2 (en)
    DE (1) DE69816911T2 (en)
    FR (1) FR2764347B1 (en)

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    EP2250374B1 (en) * 2008-01-16 2021-05-26 Emerson Climate Technologies, Inc. Scroll machine
    US7988433B2 (en) 2009-04-07 2011-08-02 Emerson Climate Technologies, Inc. Compressor having capacity modulation assembly
    US8974197B2 (en) * 2010-02-16 2015-03-10 Halla Visteon Climate Control Corporation Compact structure for an electric compressor
    ITMI20111729A1 (en) 2011-09-26 2013-03-27 Shock S R L E METHOD AND SYSTEM FOR THE CONTROL OF STABILITY OF A TWO-WHEEL VEHICLE BY ELECTRONICALLY MODULAR SUSPENSION
    KR101462941B1 (en) * 2012-03-07 2014-11-19 엘지전자 주식회사 Horizontal type scroll compressor
    US9651043B2 (en) 2012-11-15 2017-05-16 Emerson Climate Technologies, Inc. Compressor valve system and assembly
    US9249802B2 (en) 2012-11-15 2016-02-02 Emerson Climate Technologies, Inc. Compressor
    US9790940B2 (en) 2015-03-19 2017-10-17 Emerson Climate Technologies, Inc. Variable volume ratio compressor
    US10598180B2 (en) 2015-07-01 2020-03-24 Emerson Climate Technologies, Inc. Compressor with thermally-responsive injector
    US10890186B2 (en) * 2016-09-08 2021-01-12 Emerson Climate Technologies, Inc. Compressor
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    WO2023125948A1 (en) * 2021-12-31 2023-07-06 丹佛斯（天津）有限公司 Compressor
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    Also Published As

    Publication number Publication date
    FR2764347A1 (en) 1998-12-11
    EP0882892A1 (en) 1998-12-09
    FR2764347B1 (en) 1999-07-30
    JP4101932B2 (en) 2008-06-18
    US6027317A (en) 2000-02-22
    DE69816911D1 (en) 2003-09-11
    JPH1172093A (en) 1999-03-16
    DE69816911T2 (en) 2004-07-15

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