EP0275415B1 - Verdrängermaschine für kompressible Medien - Google Patents

Verdrängermaschine für kompressible Medien Download PDF

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Publication number
EP0275415B1
EP0275415B1 EP87117525A EP87117525A EP0275415B1 EP 0275415 B1 EP0275415 B1 EP 0275415B1 EP 87117525 A EP87117525 A EP 87117525A EP 87117525 A EP87117525 A EP 87117525A EP 0275415 B1 EP0275415 B1 EP 0275415B1
Authority
EP
European Patent Office
Prior art keywords
displacement
displacement body
spiral
feed chamber
inlet
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
EP87117525A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0275415A1 (de
Inventor
Roland Kolb
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.)
Aginfor AG
Original Assignee
BBC Brown Boveri AG Switzerland
Aginfor AG fuer industrielle Forschung
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 BBC Brown Boveri AG Switzerland, Aginfor AG fuer industrielle Forschung filed Critical BBC Brown Boveri AG Switzerland
Priority to AT87117525T priority Critical patent/ATE60403T1/de
Publication of EP0275415A1 publication Critical patent/EP0275415A1/de
Application granted granted Critical
Publication of EP0275415B1 publication Critical patent/EP0275415B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01C1/02—Rotary-piston machines or engines 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
    • F01C1/0207—Rotary-piston machines or engines 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
    • F01C1/0246—Details concerning the involute wraps or their base, e.g. geometry

Definitions

  • the invention relates to a positive displacement machine for compressible media with at least one delivery chamber formed by a fixed housing, designed in the manner of a spiral slot, and with a displacement body assigned to each delivery chamber and engaging therein, which as a spiral bar is essentially perpendicular to one opposite the delivery chamber eccentrically driven disc-shaped rotor is held.
  • Displacement machines of the type mentioned are known for example from DE-A-35 35 309. These machines are characterized by an almost pulsation-free conveyance of the gaseous working medium, which consists for example of air or an air-fuel mixture, and can therefore also be used with advantage for charging purposes of internal combustion engines.
  • the gaseous working medium which consists for example of air or an air-fuel mixture
  • Displacement machines of the type mentioned are known for example from DE-A-35 35 309. These machines are characterized by an almost pulsation-free conveyance of the gaseous working medium, which consists for example of air or an air-fuel mixture, and can therefore also be used with advantage for charging purposes of internal combustion engines.
  • the gaseous working medium which consists for example of air or an air-fuel mixture
  • the displacement bodies are formed by spiral strips, which are held essentially vertically on the disk-shaped rotor and have a relatively large axial length in relation to their thickness. Similar conditions exist on the side of the fixed housing, where spiral, strip-like chamber walls also remain between the conveying chambers, with a relatively large length in the axial and circumferential directions in relation to the wall thickness.
  • the vertical end edges of the strips are at least in the area of the fiber furthest away from the rotor disk or the housing base, i.e. relatively unstable in the head area, so that they could start on neighboring components during operation. In the foot area of these ledge end edges there are also considerable stresses that could even lead to breakage under certain circumstances.
  • the leading edges of the displacement body run at an angle of less than 90 ° to the plane of the rotor disk in the known embodiment. In this way, greater stability is to be achieved in the area of the free-standing end edge corners, because the foot area of the strips is extended in the circumferential direction.
  • This measure is intended in particular to achieve a better sealing effect at the respective contact points of two spirals which migrate along the course of the spiral during operation. Since, according to this lawfulness, the spirates on the outer periphery - i.e. in the area in which the outer contour is no longer required to form a delivery space and therefore does not have to perform a sealing function - would be too "thick", it is recommended that the wall thickness on external spiral part to be dimensioned thin compared to that on further internal spiral parts. Such spirals. with variable wall thickness therefore have delivery chambers, the walls of which no longer run parallel to one another; they can no longer be produced by milling.
  • the invention has for its object to provide a displacement machine of the type mentioned, in which the leading edges of the displacement body in the region of the transition to the rotor disk is not endangered.
  • the runner 1 designates the entire rotor of a displacement machine which is preferably used for charging purposes of internal combustion engines.
  • the displacement bodies are located in displacement chambers (not shown) in a fixed housing, the chambers being incorporated in the housing in the manner of a spiral slot.
  • These displacement chambers each run from an inlet space provided on the outer circumference of the housing to an outlet space provided on the inner circumference. They have essentially parallel, spiral chamber walls arranged at a constant distance from one another. These are formed, for example, by a plurality of circular arcs adjoining one another. Between the walls, the displacement bodies formed by the strips 3 'and 3 "engage in the delivery chambers.
  • the curvature of each spiral displacement body is dimensioned such that it almost touches the inner and outer chamber walls of the housing at a plurality, for example at two points, in each case.
  • the drive and the guide of the rotor provide two spaced eccentric arrangements 4 and 4 respectively. 5. These can be eccentric disks or eccentric cranks, the middle arrangement 4 generally taking over the drive and the outer arrangement 5 taking over the guiding of the rotor 1.
  • the two eccentric arrangements are synchronized with precise angles by means of an indicated toothed belt drive 6. This double eccentric drive ensures that all points of the rotor disc 2 and thus also all points of the two strips 3 'and 3 "execute a circular displacement movement.
  • the end of the strips 3 ', 3 "on the entry side is now stiffened with the aid of an increase in wall thickness.
  • This reinforcement is in an angular range from 0 ° to 120 °, in the present example in a range from 0 ° to 90 °
  • the wall thickness should preferably increase steadily up to the leading edge. The easiest way to achieve this is to expand the outer contour 3a spirally compared to the inner contour 3b. That is, the originally intended circular arc (for constant wall thickness) will be retained as such The center is shifted by dimension a, which results in a clean transition at position A of the outer contour.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Supercharger (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Lubricants (AREA)
EP87117525A 1986-12-24 1987-11-27 Verdrängermaschine für kompressible Medien Expired - Lifetime EP0275415B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117525T ATE60403T1 (de) 1986-12-24 1987-11-27 Verdraengermaschine fuer kompressible medien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5175/86 1986-12-24
CH5175/86A CH672351A5 (enrdf_load_stackoverflow) 1986-12-24 1986-12-24

Publications (2)

Publication Number Publication Date
EP0275415A1 EP0275415A1 (de) 1988-07-27
EP0275415B1 true EP0275415B1 (de) 1991-01-23

Family

ID=4289164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117525A Expired - Lifetime EP0275415B1 (de) 1986-12-24 1987-11-27 Verdrängermaschine für kompressible Medien

Country Status (5)

Country Link
EP (1) EP0275415B1 (enrdf_load_stackoverflow)
JP (1) JPS63189679A (enrdf_load_stackoverflow)
AT (1) ATE60403T1 (enrdf_load_stackoverflow)
CH (1) CH672351A5 (enrdf_load_stackoverflow)
DE (1) DE3767699D1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH678969A5 (enrdf_load_stackoverflow) * 1989-04-08 1991-11-29 Aginfor Ag
FR2736999B1 (fr) * 1995-07-17 1997-08-22 Centre Nat Rech Scient Machine de detente cryogenique a spirale
US5987894A (en) * 1996-07-16 1999-11-23 Commissariat A L'energie Atomique Temperature lowering apparatus using cryogenic expansion with the aid of spirals
JP6235857B2 (ja) * 2013-10-18 2017-11-22 株式会社Ｓｏｋｅｎ スクロール型圧縮機
KR102489482B1 (ko) * 2016-04-26 2023-01-17 엘지전자 주식회사 스크롤 압축기
KR102487906B1 (ko) 2016-04-26 2023-01-12 엘지전자 주식회사 스크롤 압축기

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2324168A (en) * 1940-01-26 1943-07-13 Montelius Carl Oscar Josef Rotary compressor or motor
FR2153129B2 (enrdf_load_stackoverflow) * 1971-06-01 1974-01-04 Vulliez Paul
JPS6079189A (ja) * 1983-10-05 1985-05-04 Hitachi Ltd スクロ−ル流体機械
JPS60252102A (ja) * 1984-05-30 1985-12-12 Hitachi Ltd スクロ−ル流体機械
DE3535309A1 (de) * 1984-10-12 1986-04-24 Volkswagen AG, 3180 Wolfsburg Verdraengermaschine fuer kompressible medien

Also Published As

Publication number Publication date
EP0275415A1 (de) 1988-07-27
CH672351A5 (enrdf_load_stackoverflow) 1989-11-15
JPS63189679A (ja) 1988-08-05
ATE60403T1 (de) 1991-02-15
DE3767699D1 (de) 1991-02-28

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