FR2547630B1 - ROOTS TYPE PUMP - Google Patents

ROOTS TYPE PUMP

Info

Publication number
FR2547630B1
FR2547630B1 FR8409040A FR8409040A FR2547630B1 FR 2547630 B1 FR2547630 B1 FR 2547630B1 FR 8409040 A FR8409040 A FR 8409040A FR 8409040 A FR8409040 A FR 8409040A FR 2547630 B1 FR2547630 B1 FR 2547630B1
Authority
FR
France
Prior art keywords
type pump
roots type
roots
pump
type
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
FR8409040A
Other languages
French (fr)
Other versions
FR2547630A1 (en
Inventor
Jurgen Steinmuller
Erich Rosamanith
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.)
PFEIFFER VAKUUMTECHNIK
Original Assignee
PFEIFFER VAKUUMTECHNIK
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 PFEIFFER VAKUUMTECHNIK filed Critical PFEIFFER VAKUUMTECHNIK
Publication of FR2547630A1 publication Critical patent/FR2547630A1/en
Application granted granted Critical
Publication of FR2547630B1 publication Critical patent/FR2547630B1/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
    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels
    • 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
    • F04C18/126—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 radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • F05C2251/046—Expansivity dissimilar
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/04—Composite, e.g. fibre-reinforced
FR8409040A 1983-06-16 1984-06-08 ROOTS TYPE PUMP Expired FR2547630B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3321718A DE3321718A1 (en) 1983-06-16 1983-06-16 ROLLING PISTON PUMP

Publications (2)

Publication Number Publication Date
FR2547630A1 FR2547630A1 (en) 1984-12-21
FR2547630B1 true FR2547630B1 (en) 1988-09-09

Family

ID=6201619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8409040A Expired FR2547630B1 (en) 1983-06-16 1984-06-08 ROOTS TYPE PUMP

Country Status (7)

Country Link
JP (1) JPS6011693A (en)
CH (1) CH665686A5 (en)
DE (1) DE3321718A1 (en)
FR (1) FR2547630B1 (en)
GB (1) GB2141486B (en)
IT (1) IT1176255B (en)
NL (1) NL8401343A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3786917D1 (en) * 1987-05-15 1993-09-09 Leybold Ag SINGLE OR MULTI-STAGE TWO-SHAFT VACUUM PUMP.
JPH01294985A (en) * 1988-05-24 1989-11-28 Ebara Corp Roots type blower plastic rotor
DE3911314A1 (en) * 1989-04-07 1990-10-11 Leybold Ag VACUUM PUMP
JPH10220371A (en) 1997-02-07 1998-08-18 Tochigi Fuji Ind Co Ltd Fluid machinery
JPH10266982A (en) * 1997-03-21 1998-10-06 Tochigi Fuji Ind Co Ltd Roots type fluid machine
US6264449B1 (en) * 2000-02-16 2001-07-24 Alexander Maute Plastic toothed wheel for a toothed wheel pump
US6325604B1 (en) * 2000-03-29 2001-12-04 Benjamin R. Du Plastic gear pump housing
DE20013338U1 (en) 2000-08-02 2000-12-28 Rietschle Werner Gmbh & Co Kg compressor
GB2418958A (en) * 2004-10-06 2006-04-12 Boc Group Plc Vacuum pump with enhanced exhaust heat transfer to stator
DE102010012759B4 (en) * 2010-03-25 2018-06-21 Pfeiffer Vacuum Gmbh Rotor for a vacuum pump
WO2012167248A2 (en) * 2011-06-02 2012-12-06 Eaton Corporation Simplified roots-type blower
US20140294645A1 (en) * 2013-03-29 2014-10-02 Dresser Inc. Rotary element and rotary displacement device comprised thereof
CN108678950B (en) * 2018-07-23 2019-08-30 长沙理工大学 A kind of Roots air blower

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1645967A (en) * 1924-08-29 1927-10-18 Thomas S Patterson Rotary pump
US1902347A (en) * 1931-01-31 1933-03-21 Vogt Instant Freezers Inc Rotary gear pump
GB525761A (en) * 1939-02-28 1940-09-04 Milo Ab Improvements in or relating to rotary compressors
GB560591A (en) * 1942-03-02 1944-04-11 Pump Engineering Service Corp Improvements in or relating to methods of manufacturing rotors for dry air pumps
DE972862C (en) * 1953-10-27 1959-10-15 Svenska Rotor Maskiner Ab Rotary piston machine for the compression or expansion of a gas
GB762553A (en) * 1953-10-27 1956-11-28 Svenska Rotor Maskiner Ab Improvements in or relating to rotary engines, pumps or the like
US2966860A (en) * 1957-04-03 1961-01-03 Lobee Pump & Machinery Co Pump for corrosive fluids
FR1514820A (en) * 1966-03-31 1968-02-23 Riva Calzoni Spa Gear pump with internal teeth or the like, particularly for supplying power steering to motor vehicles
DE2002518C3 (en) * 1970-01-21 1982-04-01 Fa. Hugo Vogelsang, 4571 Bunnen Slurry pump
GB1528727A (en) * 1977-06-15 1978-10-18 Craft Lab Meshing gear liquid pumps
JPS5715108A (en) * 1980-06-23 1982-01-26 Boeing Co Combining method of rivet and parts

Also Published As

Publication number Publication date
IT1176255B (en) 1987-08-18
JPS6011693A (en) 1985-01-21
GB2141486B (en) 1987-08-05
FR2547630A1 (en) 1984-12-21
CH665686A5 (en) 1988-05-31
GB8415239D0 (en) 1984-07-18
IT8421244A0 (en) 1984-06-04
NL8401343A (en) 1985-01-16
DE3321718A1 (en) 1984-12-20
IT8421244A1 (en) 1985-12-04
GB2141486A (en) 1984-12-19

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Legal Events

Date Code Title Description
ST Notification of lapse