GB936175A - Improvements in or relating to rotary high-vacuum pumps - Google Patents

Improvements in or relating to rotary high-vacuum pumps

Info

Publication number
GB936175A
GB936175A GB13013/62A GB1301362A GB936175A GB 936175 A GB936175 A GB 936175A GB 13013/62 A GB13013/62 A GB 13013/62A GB 1301362 A GB1301362 A GB 1301362A GB 936175 A GB936175 A GB 936175A
Authority
GB
United Kingdom
Prior art keywords
discs
rotary
blades
rings
pump
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
GB13013/62A
Inventor
Henri Louis Garnier
Leonide Rubet
Raymond Hippolyte Firm Marchal
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.)
Safran Aircraft Engines SAS
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of GB936175A publication Critical patent/GB936175A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/042—Turbomolecular vacuum pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/324—Blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F04D29/544—Blade shapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

936,175. Axial-flow pumps. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. April 4, 1962 [May 15, 1961], No. 13013/62. Class 110(1). A rotary high-vacuum pump of the kind designed to operate in series with and upstream of an ordinary vacuum pump, comprises a succession of alternately rotary and stationary blade rings, the blades of each of the rings having a triangular cross-section (Fig. 3) with a sharp rectilinear edge a and a planar transverse rear face s in a plane substantially perpendicular to the rotation axis, successive rotary and stationary blade rings being mutually arranged so that the sharp edges of one blade ring are immediately adjacent the planar faces of the next preceding blade ring. The pump, which may be driven by a built-in motor, is provided with an inlet E, Fig. 1, and outlets S connected by a pipe T to the suction end P of a backing pump (not shown), and has rotary discs R separated by fixed discs F, which discs have the blades arranged on their periphery. The gas molecules are assisted in moving in the direction f to the outlets S by inclining the axis of the ducts, between the blades on the fixed and mobile discs, in a direction in accordance with the direction of rotation r. Any back-flowing molecules impinge on the transverse surfaces s and the lateral walls of the ducts, to be redespatched with a component of speed which tends to send them downstream.
GB13013/62A 1961-05-15 1962-04-04 Improvements in or relating to rotary high-vacuum pumps Expired GB936175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861775A FR1297182A (en) 1961-05-15 1961-05-15 Turbomolecular vacuum pump

Publications (1)

Publication Number Publication Date
GB936175A true GB936175A (en) 1963-09-04

Family

ID=8755156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13013/62A Expired GB936175A (en) 1961-05-15 1962-04-04 Improvements in or relating to rotary high-vacuum pumps

Country Status (5)

Country Link
BE (1) BE615904A (en)
FR (1) FR1297182A (en)
GB (1) GB936175A (en)
LU (1) LU41495A1 (en)
NL (1) NL142222B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002025116A1 (en) * 2000-09-20 2002-03-28 Leybold Vakuum Gmbh Turbomolecular vacuum pump with rows of rotor blades and rows of stator blades
US10337517B2 (en) 2012-01-27 2019-07-02 Edwards Limited Gas transfer vacuum pump
GB2612781A (en) * 2021-11-10 2023-05-17 Edwards Ltd Turbomolecular pump bladed disc

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757354A (en) * 1969-10-27 1971-03-16 Sargent Welch Scientific Co TURBOMOLECULAR PUMP WITH ADVANCED STATORS AND ROTORS
FR2355177A1 (en) * 1975-06-17 1978-01-13 Bradbury Inventions Pty Ltd Multi-stage axial flow turbine - has stator blades at 45 degrees in opposition to blades on rotor
DE3507274A1 (en) * 1985-03-01 1986-09-04 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar DISC WITH SHOVELS HIGH STABILITY FOR TURBOMOLECULAR PUMPS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002025116A1 (en) * 2000-09-20 2002-03-28 Leybold Vakuum Gmbh Turbomolecular vacuum pump with rows of rotor blades and rows of stator blades
US10337517B2 (en) 2012-01-27 2019-07-02 Edwards Limited Gas transfer vacuum pump
GB2612781A (en) * 2021-11-10 2023-05-17 Edwards Ltd Turbomolecular pump bladed disc
GB2612781B (en) * 2021-11-10 2024-04-10 Edwards Ltd Turbomolecular pump bladed disc

Also Published As

Publication number Publication date
DE1428233B2 (en) 1972-07-27
BE615904A (en) 1962-10-02
NL142222B (en) 1974-05-15
LU41495A1 (en) 1962-06-05
FR1297182A (en) 1962-06-29
DE1428233A1 (en) 1969-01-09

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