CH621854A5 - Roots pump - Google Patents

Roots pump Download PDF

Info

Publication number
CH621854A5
CH621854A5 CH693277A CH693277A CH621854A5 CH 621854 A5 CH621854 A5 CH 621854A5 CH 693277 A CH693277 A CH 693277A CH 693277 A CH693277 A CH 693277A CH 621854 A5 CH621854 A5 CH 621854A5
Authority
CH
Switzerland
Prior art keywords
roots
pump
pumps
compression
stage
Prior art date
Application number
CH693277A
Other languages
German (de)
English (en)
Inventor
Otto Dr Winkler
Original Assignee
Balzers Hochvakuum
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 Balzers Hochvakuum filed Critical Balzers Hochvakuum
Priority to CH693277A priority Critical patent/CH621854A5/de
Priority to NL7708450A priority patent/NL7708450A/nl
Priority to DE19782821903 priority patent/DE2821903A1/de
Priority to GB2596378A priority patent/GB1571880A/en
Priority to FR787816726A priority patent/FR2393957A1/fr
Publication of CH621854A5 publication Critical patent/CH621854A5/de

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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return 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
    • 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
    • F04C18/20—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 dissimilar tooth forms
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
CH693277A 1977-06-06 1977-06-06 Roots pump CH621854A5 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH693277A CH621854A5 (en) 1977-06-06 1977-06-06 Roots pump
NL7708450A NL7708450A (nl) 1977-06-06 1977-07-29 Afrolzuigerpomp.
DE19782821903 DE2821903A1 (de) 1977-06-06 1978-05-19 Waelzkolbenpumpe
GB2596378A GB1571880A (en) 1977-06-06 1978-05-31 Rotary positive-displacement gas pump
FR787816726A FR2393957A1 (fr) 1977-06-06 1978-06-05 Pompe a piston rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH693277A CH621854A5 (en) 1977-06-06 1977-06-06 Roots pump

Publications (1)

Publication Number Publication Date
CH621854A5 true CH621854A5 (en) 1981-02-27

Family

ID=4317306

Family Applications (1)

Application Number Title Priority Date Filing Date
CH693277A CH621854A5 (en) 1977-06-06 1977-06-06 Roots pump

Country Status (5)

Country Link
CH (1) CH621854A5 (nl)
DE (1) DE2821903A1 (nl)
FR (1) FR2393957A1 (nl)
GB (1) GB1571880A (nl)
NL (1) NL7708450A (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232119A1 (de) * 1992-09-25 1994-03-31 Mes Und Regeltechnik Geraeteba Regelung einer Wälzkolbenpumpe
DE4244063A1 (de) * 1992-12-24 1994-06-30 Balzers Pfeiffer Gmbh Wälzkolben-Vakuumpumpe

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2088957B (en) * 1980-12-05 1984-12-12 Boc Ltd Rotary positive-displacement fluidmachines
WO1983001491A1 (en) * 1981-10-16 1983-04-28 Roger Boyd Walker Rotary piston compressors and expanders
US4761123A (en) * 1987-06-11 1988-08-02 Ingersoll-Rand Company Lubrication arrangement, in an air compressor
CN115434902B (zh) * 2022-11-07 2022-12-30 中国空气动力研究与发展中心超高速空气动力研究所 一种大流量高真空抽气系统的设计方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232119A1 (de) * 1992-09-25 1994-03-31 Mes Und Regeltechnik Geraeteba Regelung einer Wälzkolbenpumpe
DE4244063A1 (de) * 1992-12-24 1994-06-30 Balzers Pfeiffer Gmbh Wälzkolben-Vakuumpumpe

Also Published As

Publication number Publication date
NL7708450A (nl) 1978-12-08
GB1571880A (en) 1980-07-23
FR2393957A1 (fr) 1979-01-05
DE2821903A1 (de) 1978-12-14

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Legal Events

Date Code Title Description
PL Patent ceased