EP0315878A3 - Internal gear pump - Google Patents

Internal gear pump Download PDF

Info

Publication number
EP0315878A3
EP0315878A3 EP88118185A EP88118185A EP0315878A3 EP 0315878 A3 EP0315878 A3 EP 0315878A3 EP 88118185 A EP88118185 A EP 88118185A EP 88118185 A EP88118185 A EP 88118185A EP 0315878 A3 EP0315878 A3 EP 0315878A3
Authority
EP
European Patent Office
Prior art keywords
internal gear
gear pump
pump
internal
gear
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.)
Granted
Application number
EP88118185A
Other languages
German (de)
Other versions
EP0315878B1 (en
EP0315878A2 (en
Inventor
Siegfried Hertell
Dieter Otto
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
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
Priority claimed from DE19873737961 external-priority patent/DE3737961A1/en
Application filed by Barmag AG filed Critical Barmag AG
Publication of EP0315878A2 publication Critical patent/EP0315878A2/en
Publication of EP0315878A3 publication Critical patent/EP0315878A3/en
Application granted granted Critical
Publication of EP0315878B1 publication Critical patent/EP0315878B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C15/064—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 machines or pumps
    • F04C15/066—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 machines or pumps of the non-return type
    • F04C15/068—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 machines or pumps of the non-return type of the elastic type, e.g. reed valves
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/088—Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
EP19880118185 1987-11-07 1988-11-02 Internal gear pump Expired - Lifetime EP0315878B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3737961 1987-11-07
DE19873737961 DE3737961A1 (en) 1987-11-07 1987-11-07 Internal-gear pump
DE3743153 1987-12-19
DE3743153 1987-12-19

Publications (3)

Publication Number Publication Date
EP0315878A2 EP0315878A2 (en) 1989-05-17
EP0315878A3 true EP0315878A3 (en) 1990-01-17
EP0315878B1 EP0315878B1 (en) 1992-04-01

Family

ID=25861598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880118185 Expired - Lifetime EP0315878B1 (en) 1987-11-07 1988-11-02 Internal gear pump

Country Status (2)

Country Link
EP (1) EP0315878B1 (en)
DE (1) DE3869737D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4107704C2 (en) * 1990-03-15 1994-12-01 Barmag Luk Automobiltech hydraulic pump
EP0579981B1 (en) * 1992-06-29 1996-10-23 LuK Automobiltechnik GmbH & Co. KG Internal gear pump for hydraulic fluids
DE19804133A1 (en) * 1998-02-03 1999-08-12 Voith Turbo Kg Sickle-free internal gear pump
DE102006047312A1 (en) * 2006-10-06 2008-04-10 Sauer-Danfoss Aps Hydraulic machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
US2830542A (en) * 1953-06-22 1958-04-15 Gen Motors Corp Fluid pump
US3490383A (en) * 1969-01-29 1970-01-20 Koehring Co Hydraulic pump or motor
FR2196678A6 (en) * 1972-08-18 1974-03-15 Danfoss As
US4025243A (en) * 1973-01-05 1977-05-24 Gresen Manufacturing Company Orbital device
US4145167A (en) * 1976-02-17 1979-03-20 Danfoss A/S Gerotor machine with pressure balancing recesses in inner gear
DE3444859A1 (en) * 1983-12-14 1985-06-27 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Rotary cellular pump for hydraulic systems
DE3444857A1 (en) * 1984-12-08 1986-06-12 Graubremse Gmbh, 6900 Heidelberg Control valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
US2830542A (en) * 1953-06-22 1958-04-15 Gen Motors Corp Fluid pump
US3490383A (en) * 1969-01-29 1970-01-20 Koehring Co Hydraulic pump or motor
FR2196678A6 (en) * 1972-08-18 1974-03-15 Danfoss As
US4025243A (en) * 1973-01-05 1977-05-24 Gresen Manufacturing Company Orbital device
US4145167A (en) * 1976-02-17 1979-03-20 Danfoss A/S Gerotor machine with pressure balancing recesses in inner gear
DE3444859A1 (en) * 1983-12-14 1985-06-27 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Rotary cellular pump for hydraulic systems
DE3444857A1 (en) * 1984-12-08 1986-06-12 Graubremse Gmbh, 6900 Heidelberg Control valve

Also Published As

Publication number Publication date
DE3869737D1 (en) 1992-05-07
EP0315878B1 (en) 1992-04-01
EP0315878A2 (en) 1989-05-17

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