EP0161130B1 - Compresseur volumétrique à vis - Google Patents

Compresseur volumétrique à vis Download PDF

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Publication number
EP0161130B1
EP0161130B1 EP85400531A EP85400531A EP0161130B1 EP 0161130 B1 EP0161130 B1 EP 0161130B1 EP 85400531 A EP85400531 A EP 85400531A EP 85400531 A EP85400531 A EP 85400531A EP 0161130 B1 EP0161130 B1 EP 0161130B1
Authority
EP
European Patent Office
Prior art keywords
chambers
compressor according
rotor
pair
threads
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
Application number
EP85400531A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0161130A1 (fr
Inventor
Jean-Jacques Carré
Roland Levrai
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.)
Bendix France SA
Original Assignee
Bendix France 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 Bendix France SA filed Critical Bendix France SA
Publication of EP0161130A1 publication Critical patent/EP0161130A1/fr
Application granted granted Critical
Publication of EP0161130B1 publication Critical patent/EP0161130B1/fr
Expired 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

Definitions

  • the present invention relates to screw compressors, and more particularly to volumetric compressors or blowers intended for supercharging or scanning thermal engines of motor vehicles.
  • the present invention relates more specifically to front inlet screw compressors, of the type comprising a cooperating male rotor and a female rotor, respectively disposed in a pair of interconnected parallel cylindrical chambers formed in a housing, an inlet passage communicating with one end. of the pair of chambers by an entry opening delimited, at this end of the pair of chambers, by a wall partially obscuring adjacent portions of each chamber, and an outlet passage communicating with the other end of this pair of chambers .
  • a compressor of this type is described in document FR-A-1216086.
  • the inlet opening is formed by the other open front end of the housing and is partially obscured by a small cover plate obscuring the interpenetration zone of two veins each belonging to one of the rotors to avoid direct communication between the inlet opening and the outlet opening, which covers axially more half the length of the rotors and partially radially the end portions of the rotors opposite the inlet opening.
  • the present invention relates to improvements to this type of compressor and to propose a new arrangement of openings for the production of a compact positive displacement compressor, with low inertia, fast rotation and high efficiency, by limiting the number of threads.
  • rotors sweeping at a given instant the associated inlet opening so as to permanently provide, in each rotor, between the inlet and outlet openings, a buffer vein along which there prevails an intermediate pressure evolving between the pressure atmospheric intake and discharge overpressure at the exhaust, while allowing a correct supply of this vein.
  • the inlet opening consists, for each chamber, of an annular sector with an opening angle less than 200 ° and greater than about 165 °, the two sectors annulars being arranged substantially symmetrically with respect to the plane of intersection of the chambers and separated from each other by a central portion of the wall, the adjacent radial ends of the annular inlet sectors forming an angle of less than 90 between them °.
  • the outlet passage communicates with the chambers by an outlet opening formed in a peripheral wall of the housing, this outlet opening having a general V shape substantially centered on the plane of intersection of the rooms. and whose edges converging towards each other are, in projection, substantially parallel to the threads of the respective rotors.
  • the screw compressor according to the invention comprises a male rotor (1) and a female rotor (2) each comprising helical threads arranged, so that the threads of each rotor cooperate with those of the 'other rotor in slight mutual contact, in a pair of parallel cylindrical chambers (3) and (4), respectively, intercommunicating longitudinally along a plane of intersection parallel to the axes Z and Z' common to the male rotor (1) and to the chamber (3), on the one hand, and to the female rotor (2) and to the chamber (4) on the other.
  • the rotors (1) and (2) are coupled at one of their ends, in the example shown, to a pair of gears (6) and (7) cooperating mutually without play to synchronously drive the rotors (1) and (2).
  • the gears (6) and (7) are arranged in an interior cavity of the housing (5) separated in a sealed manner from the chambers (3) and (4) by a front partition in which the rotors (1) are supported in turn. and (2), the latter comprising at their ends opposite the gears (6) and (7), bearings supported on an end end wall (8) attached to the housing (5).
  • the axis (9) of the gear (7) and the female rotor (2) is coupled to a compressor drive device, the gear (7) of the female rotor (2) therefore being the drive gear of the gear (6) of the male rotor (1), according to a general arrangement which is the subject of document EP-A-0101345.
  • each annular sector (11) or (12) has an external profile centered on the corresponding axis Z or Z 'and of radius corresponding to that of the associated chamber (3) or (4), and an internal profile in the form of arc of a circle, also centered on the corresponding axis Z or Z ' and of radius corresponding to the radius of the corresponding rotor hub (1) or (2).
  • the male rotor comprises 4 lobes or threads and the female rotor comprises 6 threads, the threads being of symmetrical or slightly asymmetrical profile. As can be seen in FIG.
  • the two sectors (11) and (12) are substantially symmetrical with respect to the plane of intersection of the chambers (3) and (4) and are separated, at the level of their closest zones. one from the other, by a central portion (13) of the wall (8).
  • the adjacent edges (14) and (15) of the sectors (11) and (12) extend radially towards the respective axes Z and Z ', forming between them an angle less than 90 °, typically about 80 °.
  • the annular sector (11) of the male screw has an opening angle a less than 180 °, typically about 165 °.
  • the annular sector (12) of the female screw (2) has an opening angle j3 greater than 180 ° but less than 200 °, typically around 190 °.
  • the top of the triangle is truncated, the outlet opening (16) consequently having a small transverse edge (19) opposite the base and parallel to the latter.
  • the base has a central projecting portion (20) of transverse extension corresponding substantially to that of the short side (19).
  • the outlet opening (16) is substantially centered on the plane of intersection of the chambers (3) and (4) but has a slight asymmetry to take account of the number of different threads on the male (1) and female (2) rotors.
  • the maximum axial height of the opening (16) (between its large base and the short side (19)) is less than twice the axial distance between two adjacent rotor threads, typically of about 1.25 times the axial distance between adjacent rotor threads.
  • the overall length of the rotors corresponds substantially to half the pitch of the threads of each rotor.
  • vein B of the male screw (1) and the vein B 'of the female screw (2) enter into communication or interpenetration with one another being isolated, on the side of their intake end, from the inlet openings (11) and (12). It is the same for the veins C and C 'which will cease to be confused to enter on the other hand in communication with the corresponding inlet openings (11) and (12). Furthermore the vein A, also concealed by the wall (8) is in communication with the vein D 'of the female screw (2) which it communicates with the inlet opening (12). On the other hand, the vein A ′, in the configuration shown, is it completely closed.
  • a nominal compression pressure of the order of 1.6 bar absolute

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Supercharger (AREA)
EP85400531A 1984-03-28 1985-03-20 Compresseur volumétrique à vis Expired EP0161130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404841A FR2562166B1 (fr) 1984-03-28 1984-03-28 Compresseur volumetrique a vis
FR8404841 1984-03-28

Publications (2)

Publication Number Publication Date
EP0161130A1 EP0161130A1 (fr) 1985-11-13
EP0161130B1 true EP0161130B1 (fr) 1988-03-02

Family

ID=9302560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400531A Expired EP0161130B1 (fr) 1984-03-28 1985-03-20 Compresseur volumétrique à vis

Country Status (9)

Country Link
US (1) US4588363A (es)
EP (1) EP0161130B1 (es)
JP (1) JP2589972B2 (es)
AU (1) AU566579B2 (es)
DE (1) DE3561761D1 (es)
ES (1) ES295665Y (es)
FR (1) FR2562166B1 (es)
MX (1) MX158277A (es)
SU (1) SU1378790A3 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2501966Y2 (ja) * 1989-09-14 1996-06-19 小川精機株式会社 ス―パ―チャ―ジャ
US6599112B2 (en) * 2001-10-19 2003-07-29 Imperial Research Llc Offset thread screw rotor device
US6786710B2 (en) * 2002-08-27 2004-09-07 Carrier Corporation Discharge porting for screw compressor with tangential flow guide cusp
JP2005315149A (ja) * 2004-04-28 2005-11-10 Toyota Industries Corp スクリュー式流体機械
CN100417816C (zh) * 2005-09-30 2008-09-10 浙江大学 一种大流量高压三螺杆泵的螺杆齿形
CN100360808C (zh) * 2005-09-30 2008-01-09 陈行 一种不等齿数的大流量高压三螺杆泵的螺杆齿形

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2287716A (en) * 1941-04-22 1942-06-23 Joseph E Whitfield Fluid device
US2410172A (en) * 1941-05-31 1946-10-29 Jarvis C Marble Rotary screw wheel apparatus
CH325597A (fr) * 1953-04-06 1957-11-15 Dresser Ind Machine rotative volumétrique
US3073514A (en) * 1956-11-14 1963-01-15 Svenska Rotor Maskiner Ab Rotary compressors
GB959833A (en) * 1959-06-04 1964-06-03 Svenska Rotor Maskiner Ab Improvements in or relating to screw rotor machines
US3108740A (en) * 1960-06-17 1963-10-29 Svenska Rotor Maskiner Ab Regulating means for rotary piston compressors
US3414189A (en) * 1966-06-22 1968-12-03 Atlas Copco Ab Screw rotor machines and profiles
GB1248031A (en) * 1967-09-21 1971-09-29 Edwards High Vacuum Int Ltd Two-stage rotary vacuum pumps
DE1949175B2 (de) * 1969-09-29 1973-03-29 Borisoglebskij, Alexandr L; Grinpress, Boris L.; Sakun, Iwan A.; Dimentow, Jurij I.; Wajnstejn, Mojsej F.; Chasanow, Rafchat L; Leningrad; Pjankow, Walentin N., Puskin; (Sowjetunion) Parallel- und aussenachsige rotationskolbenmaschine
GB1548663A (en) * 1975-06-24 1979-07-18 Maekawa Seisakusho Kk Refrigerating apparatus
JPS5430520A (en) * 1977-08-12 1979-03-07 Hitachi Ltd Screw compressor
JPS5996494A (ja) * 1982-11-25 1984-06-02 Hitachi Ltd スクリュー圧縮機

Also Published As

Publication number Publication date
US4588363A (en) 1986-05-13
ES295665Y (es) 1987-11-01
MX158277A (es) 1989-01-18
FR2562166A1 (fr) 1985-10-04
SU1378790A3 (ru) 1988-02-28
DE3561761D1 (en) 1988-04-07
ES295665U (es) 1987-03-16
JPS60219486A (ja) 1985-11-02
FR2562166B1 (fr) 1986-07-18
EP0161130A1 (fr) 1985-11-13
AU4005085A (en) 1985-10-03
AU566579B2 (en) 1987-10-22
JP2589972B2 (ja) 1997-03-12

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