DE3726684C2 - - Google Patents

Info

Publication number
DE3726684C2
DE3726684C2 DE19873726684 DE3726684A DE3726684C2 DE 3726684 C2 DE3726684 C2 DE 3726684C2 DE 19873726684 DE19873726684 DE 19873726684 DE 3726684 A DE3726684 A DE 3726684A DE 3726684 C2 DE3726684 C2 DE 3726684C2
Authority
DE
Germany
Prior art keywords
roots
pump chamber
outlet
opening
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 - Lifetime
Application number
DE19873726684
Other languages
German (de)
English (en)
Other versions
DE3726684A1 (de
Inventor
Werner 7860 Schopfheim De Rietschle
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.)
Gardner Denver Schopfheim GmbH
Original Assignee
Werner Rietschle Maschinen- und Apparatebau 7860 Schopfheim De GmbH
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 Werner Rietschle Maschinen- und Apparatebau 7860 Schopfheim De GmbH filed Critical Werner Rietschle Maschinen- und Apparatebau 7860 Schopfheim De GmbH
Priority to DE19873726684 priority Critical patent/DE3726684A1/de
Priority to DE8809988U priority patent/DE8809988U1/de
Publication of DE3726684A1 publication Critical patent/DE3726684A1/de
Application granted granted Critical
Publication of DE3726684C2 publication Critical patent/DE3726684C2/de
Granted 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
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
DE19873726684 1987-08-11 1987-08-11 Waelzkolben-vakuumpumpe Granted DE3726684A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19873726684 DE3726684A1 (de) 1987-08-11 1987-08-11 Waelzkolben-vakuumpumpe
DE8809988U DE8809988U1 (de) 1987-08-11 1988-08-04 Wälzkolben-Vakuumpumpe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873726684 DE3726684A1 (de) 1987-08-11 1987-08-11 Waelzkolben-vakuumpumpe

Publications (2)

Publication Number Publication Date
DE3726684A1 DE3726684A1 (de) 1989-02-23
DE3726684C2 true DE3726684C2 (enrdf_load_stackoverflow) 1991-05-16

Family

ID=6333516

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873726684 Granted DE3726684A1 (de) 1987-08-11 1987-08-11 Waelzkolben-vakuumpumpe

Country Status (1)

Country Link
DE (1) DE3726684A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020187342A1 (en) * 2019-03-20 2020-09-24 Vysoka Skola Banska - Technicka Univerzita Ostrava A compression cycle method and a compressor for carrying out the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1818767A (en) * 1927-09-13 1931-08-11 Everett W Swartwout Rotary blower and pump
GB379712A (en) * 1931-03-04 1932-09-05 Henry Ogilvie Improvements in rotary compressors or pumps
GB616485A (en) * 1946-09-06 1949-01-21 Thomas Desmond Hudson Andrews Improvements in or relating to rotary air compressors

Also Published As

Publication number Publication date
DE3726684A1 (de) 1989-02-23

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: RIETSCHLE THOMAS SCHOPFHEIM GMBH, 79650 SCHOPFHEIM

8327 Change in the person/name/address of the patent owner

Owner name: GARDNER DENVER SCHOPFHEIM GMBH, 79650 SCHOPFHE, DE