EP0904493A1 - Procede pour la mise en marche d'une machine volumetrique selon le principe de la spirale, et machine volumetrique convenant a la mise en oeuvre dudit procede - Google Patents

Procede pour la mise en marche d'une machine volumetrique selon le principe de la spirale, et machine volumetrique convenant a la mise en oeuvre dudit procede

Info

Publication number
EP0904493A1
EP0904493A1 EP97916382A EP97916382A EP0904493A1 EP 0904493 A1 EP0904493 A1 EP 0904493A1 EP 97916382 A EP97916382 A EP 97916382A EP 97916382 A EP97916382 A EP 97916382A EP 0904493 A1 EP0904493 A1 EP 0904493A1
Authority
EP
European Patent Office
Prior art keywords
machine
orbiter
housing
axial
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97916382A
Other languages
German (de)
English (en)
Inventor
Konrad Joseph Popp
Günther A. G. DENUEL
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.)
Leybold GmbH
Original Assignee
Leybold Vakuum GmbH
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 Leybold Vakuum GmbH filed Critical Leybold Vakuum GmbH
Publication of EP0904493A1 publication Critical patent/EP0904493A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • 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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating

Definitions

  • an orbiter executes a circular movement within a housing.
  • At least one spiral projection and a groove adapted to the projection form a scoop space in which closed volumes move from the inside to the outside (or vice versa) and effect the conveyance.
  • the sealing gaps between the parts moving relative to one another are decisive for the conveying properties, can only be made sufficiently small with a high production outlay.
  • the gaps sealing the scoop chamber in a displacement machine of the type concerned are axial sealing gaps which are located between surface areas which extend perpendicular to the axis of the orbiter or the machine, and radial sealing gaps , which are located between surface areas that extend substantially perpendicular to radial, that is to say in the axial direction.
  • the present invention is based on the object of nevertheless achieving optimum sealing gap ratios in a machine which is manufactured without high manufacturing outlay.
  • the present invention is based on a displacement machine based on the spiral principle with the following features: It comprises a two-part housing and an axially guided orbiter. At least one spiral groove in one of the components (housing or orbiter) forms a scooping space. At least one spiral projection on the other component (orbiter or housing) executes circular movements in the pumping chamber.
  • the projection and groove have mutually facing, radially extending surface areas, between which there are axial sealing gaps.
  • At least one of the two components with the facing surface areas is manufactured with low manufacturing accuracy and is coated with a wearing material at least in the surface areas that form the axial sealing gaps.
  • the surface regions of the corresponding component facing these surface regions have a surface which causes the coating to wear.
  • the dimension of the coating with the wearing material is selected such that the surface areas facing one another touch after assembly, but the start-up of the machine is not blocked.
  • the method according to the invention for starting up the displacement machine is carried out in such a way that the machine is started and that the wearing material is worked off until sealing gaps occur.
  • Axial guidance of the orbiter is preferably used to determine the end of the processing process in the axial direction. Because the axial guidance of the orbiter trolled, it is achieved that the processing takes place only as long as the axial bearing allows. At the moment when the axial guidance of the orbiter prevents further wear of the wearing material, the axial sealing conditions between the radially extending, facing surface areas are optimal, regardless of whether the component provided with the coating is manufactured with high manufacturing accuracy or not. A complex manufacturing process can therefore be dispensed with, at least for the coated component.
  • the coated component is also provided with a wear-resistant coating in axially extending surface areas, which form radial sealing gaps, which - like the coating of the radially extending surface areas - has a slight oversize.
  • a wear-resistant coating in axially extending surface areas, which form radial sealing gaps, which - like the coating of the radially extending surface areas - has a slight oversize.
  • FIGS. 1 and 2 each schematically show an axial section through the edge region of a displacement machine of the type concerned here before and after the startup according to the invention and
  • FIGS 3 to 9 expedient designs of bearings in one for the implementation of the displacement machine suitable for the commissioning method according to the invention.
  • the two housing parts of the displacement machines 1 designed according to the invention are designated 2 (housing) and 3 (cover). They are axially guided relative to each other.
  • both housing parts 2, 3 there is a groove 4 and 5, each of which forms a scoop 6 and 7, respectively.
  • spiral projections 11 and 12 arranged on both sides of the disk-shaped orbiter 8 perform circular movements and effect the desired gas delivery in a manner known per se.
  • the orbiter 8 has an axial guide. It comprises several, preferably three, bearings 9 arranged evenly distributed over the circumference of orbiter 8 and housing 2, 3.
  • the dividing line between the two housing parts 2, 3 lies at the level of orbiter 8.
  • the machine 1 is assembled by means of the dashed line 10 indicated screws. Also spacers, not shown, determine the distance 20 of the two housing parts 2, 3 from each other.
  • the orbiter 8 is coated with a plastic layer 13, both in the areas of axial sealing gaps (eg double arrow 14) and radial sealing gaps (eg double arrow 15).
  • the plastic layer consists, for example, of polytetrafluoroethylene and is 0.1 to 1 mm thick before the incorporation process. Their dimensioning is chosen so that the surface areas between which the sealing gaps 14, 15 are located are in contact with one another immediately after the assembly of the displacement machine 1, be it provisional or final, but does not block the start-up of the machine is.
  • the top surfaces of the mating surfaces are designed such that they produce fine-grained abrasion.
  • these mating surfaces can be shot-blasted, for example, by sandblasting.
  • the coating 13 has a honeycomb structure, as is described in EU-Bl-493 315.
  • the orbiter 8 has an outer edge 21 which, together with a recess 22 adapted to the edge 21, forms axial bearings 9 between the two housing parts 2, 3.
  • the axial bearings 9 are designed as slide bearings. They each comprise two steel plates 23, 24, which are embedded in the housing parts 2, 3 on the side of the edge 21 of the orbiter 8.
  • the counter-running surfaces form in the outer edge 21 of the orbiter 8, made of plastic (eg polytetrafluoroethylene), disks 25, 26.
  • the proportions of the elements 23 to 26 take into account the circular movement of the orbiter 8.
  • the running surfaces of the slide bearings form in each case a bearing gap (double arrow 27), the size of which depends on the axial distance between the housing parts 2, 3.
  • Figures 1 and 2 show the sealing gap conditions before (Figure 1) and after ( Figure 2) the incorporation process.
  • the surface areas forming the axial sealing gaps 14 lie against one another because of the excess of the coating 13.
  • the slide bearings 9 form a relatively large air gap 27 ( Figure 1).
  • the familiarization process begins when the machine 1 is started up.
  • the opposite surface areas adapt to the fact that the wearing surface areas are ground down.
  • the size of the axial gap 27 in the slide bearing 9 becomes smaller.
  • the incorporation process in the axial direction is ended. No further abrasion takes place, so that the very small sealing gaps present at this moment remain when the machine is operated later.
  • the induction process can be carried out in one or more steps. Several steps are required if the excess of the coating 13 is so large that the machine would not start after an immediate final assembly due to excessive frictional forces. There is therefore first a preliminary assembly with spacers 20 determining the distance 20 between the two housing parts 2, 3, in which the formation of an optimum sealing gap in the bearing 9 is not yet possible.
  • the machine 1 is dismantled and reassembled with thinner spacers and put into operation. This begins the second, preferably last phase of the familiarization process.
  • Optimal bearing gaps 27 in the axial bearing 9 again determine the end of the incorporation process.
  • Those surface areas which essentially extend axially and form radial sealing gaps 15 are also expediently designed according to the invention. After the machine has been started up, an induction process also takes place in radial clearing. This is ended when contact contacts diminish, so that optimal small sealing gaps also set in the radial direction.
  • FIG. 3 shows another embodiment of the thrust bearing 9.
  • Plates 23, 24 (FIGS. 1, 2) are provided with ball rolling elements 28, 29 which, together with the disks 25, 26 in the orbiter 8, have the function of an axial bearing and can be used to determine the end of the incorporation process .
  • FIGS. 4 to 6 show embodiments for axial bearings, in which orbiter 8 and housing 2, 3 are connected to one another via articulated or flexible elements.
  • 8 double joints 31 and 32 are present on both sides of the orbiter.
  • fitting pieces 33, 34 are provided in the housing 2, 3.
  • At least one of the two adapters can be axially adjusted and locked (see double arrow 35). This makes it possible to use axial bearings of this type for axially guiding the housing parts 2, 3 during the familiarization process. If you observe during a one- or multi-stage familiarization process, e.g. the properties of the machine 1 (compression, final pressure behavior, etc.), the familiarization process is expediently ended when one or more of these properties is / are optimal. Because the adapter 34 is axially adjustable, the axial movement of the housing parts 2, 3 is achieved during the incorporation process.
  • a bending rod 37 is provided instead of the double joints 31, 32. This is also fastened to the housing part 3 with the aid of the axially adjustable and lockable fitting 34.
  • connection between the orbiter 8 and the housing consists of an eccentric bolt 41 which is mounted in the housing part 2 or orbiter 8 via angular contact ball bearings 42, 43.
  • the angular contact ball bearing 42 on the housing side is again fastened in the housing part 2 by means of an axially adjustable and lockable fitting 44 (double arrow 45).
  • FIGS. 4 to 6 have the advantage that at the same time they have the effect of preventing the orbiter 8 from rotating.
  • FIG. 7 shows that the eccentric bearing 51 of the main shaft 52 of the machine 1 can also be used for the axial guidance of the housing parts 2, 3. It is essential that the associated bearings 53 and 54 are designed as angular contact ball bearings and allow the housing parts 2, 3 to move axially towards one another during the incorporation process, e.g. with the help of an axially adjustable and lockable (double arrow 55) adapter 56, with which the bearing 54 is axially fixed in the housing part 2.
  • FIGS. 8 and 9 show embodiments (sections through the orbiter 8) in which the orbiter 8 is axially fixed to the housing 2, 3 by leaf springs 61 and 62, for example, which cover the outer edge of the orbiter 8 with one of the connect two housing parts 2 or 3.
  • the leaf springs 61, 62 allow the circular movement of the orbiter 8 during normal operation of the machine 2, but not an axial movement.
  • the leaf springs 61, 62 are fastened to the orbiter 8 and to the housing 2, 3 by means of fastening plates 63 and 64.
  • one of the fastening parts supply plates in the axial direction designed and lockable.

Landscapes

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

Abstract

L'invention concerne un procédé pour la mise en marche d'une machine volumétrique, selon le principe de la spirale, comportant un boîtier (2, 3) en deux parties, et un orbiteur (8) guidé axialement à l'intérieur de celui-ci. L'une des régions de surface opposées est revêtue d'un matériau d'usure (13) tandis que l'autre présente une surface provoquant l'usure de la couche de matériau (13). Le procédé pour la mise en marche de la machine volumétrique (1) s'effectue de telle manière que cette machine (1) est mise en marche après son montage et que le matériau d'usure (13) s'use jusqu'à l'apparition de fentes d'étanchéité (14, 15).
EP97916382A 1996-06-11 1997-03-25 Procede pour la mise en marche d'une machine volumetrique selon le principe de la spirale, et machine volumetrique convenant a la mise en oeuvre dudit procede Withdrawn EP0904493A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1996123215 DE19623215A1 (de) 1996-06-11 1996-06-11 Verfahren zur Inbetriebnahme einer Verdrängermaschine nach dem Spiralprinzip sowie für die Durchführung dieses Verfahrens geeignete Verdrängermaschine
DE19623215 1996-06-11
PCT/EP1997/001492 WO1997047888A1 (fr) 1996-06-11 1997-03-25 Procede pour la mise en marche d'une machine volumetrique selon le principe de la spirale, et machine volumetrique convenant a la mise en oeuvre dudit procede

Publications (1)

Publication Number Publication Date
EP0904493A1 true EP0904493A1 (fr) 1999-03-31

Family

ID=7796598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97916382A Withdrawn EP0904493A1 (fr) 1996-06-11 1997-03-25 Procede pour la mise en marche d'une machine volumetrique selon le principe de la spirale, et machine volumetrique convenant a la mise en oeuvre dudit procede

Country Status (4)

Country Link
EP (1) EP0904493A1 (fr)
JP (1) JP2000511987A (fr)
DE (1) DE19623215A1 (fr)
WO (1) WO1997047888A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8157551B2 (en) 2009-02-03 2012-04-17 Scrollabs Corporation Scroll compressor with back pressure pocket receiving discharge pressure fluid
US8167594B2 (en) * 2009-02-03 2012-05-01 Scrolllabs Corporation Scroll compressor with materials to allow run-in

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
CH546361A (de) * 1972-09-05 1974-02-28 Aginfor Ag Anordnung mit mindestens zwei teilen, die in bezug aufeinander in einer gefuehrten, kreisenden bewegung bewegbar sind.
JPS5564179A (en) * 1978-11-02 1980-05-14 Sanden Corp Volume system fluid compressor
DE2927690A1 (de) * 1979-07-09 1981-01-29 Leybold Heraeus Gmbh & Co Kg Verdraengermaschine nach dem spiralprinzip
DE3141525A1 (de) * 1981-10-20 1983-05-11 Volkswagenwerk Ag, 3180 Wolfsburg Verdraengermaschine fuer kompressible medien
US4466785A (en) * 1982-11-18 1984-08-21 Ingersoll-Rand Company Clearance-controlling means comprising abradable layer and abrasive layer
DE3402548A1 (de) * 1984-01-26 1985-08-01 Leybold-Heraeus GmbH, 5000 Köln Verdraengermaschine
KR890000628B1 (ko) * 1984-05-29 1989-03-22 미쓰비시전기 주식회사 스크롤 유체기계
JP2599626B2 (ja) * 1989-01-30 1997-04-09 岩田塗装機工業 株式会社 スクロール流体機械
DE8915375U1 (de) * 1989-05-26 1990-09-06 Goetze Ag, 5093 Burscheid Spiralkompressor
US5120205A (en) * 1990-01-11 1992-06-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Scroll type compressor with improved bearing arrangement for drive shaft
EP0463370A3 (en) * 1990-05-30 1993-08-18 Volkswagen Ag Eccentric drive for a rotating mass
CH682589A5 (de) * 1990-12-28 1993-10-15 Gerhard Renz Fried Meysen Thom Abdichtung.
JP3018850B2 (ja) * 1992-09-30 2000-03-13 株式会社豊田自動織機製作所 スクロール型圧縮機
US5391065A (en) * 1993-10-26 1995-02-21 Ingersoll-Rand Company Parallel adjustment assembly for a scroll compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9747888A1 *

Also Published As

Publication number Publication date
DE19623215A1 (de) 1997-12-18
WO1997047888A1 (fr) 1997-12-18
JP2000511987A (ja) 2000-09-12

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