EP0072636A3 - N/n +1 lobed rotary fluid pumps - Google Patents

N/n +1 lobed rotary fluid pumps Download PDF

Info

Publication number
EP0072636A3
EP0072636A3 EP82303950A EP82303950A EP0072636A3 EP 0072636 A3 EP0072636 A3 EP 0072636A3 EP 82303950 A EP82303950 A EP 82303950A EP 82303950 A EP82303950 A EP 82303950A EP 0072636 A3 EP0072636 A3 EP 0072636A3
Authority
EP
European Patent Office
Prior art keywords
annulus
clearances
rotary fluid
fluid pumps
positions
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.)
Withdrawn
Application number
EP82303950A
Other languages
German (de)
French (fr)
Other versions
EP0072636A2 (en
Inventor
Robin Edward Child
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.)
Concentric Pumps Ltd
Original Assignee
Concentric Pumps Ltd
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 Concentric Pumps Ltd filed Critical Concentric Pumps Ltd
Publication of EP0072636A2 publication Critical patent/EP0072636A2/en
Publication of EP0072636A3 publication Critical patent/EP0072636A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F04C2/084—Toothed wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

In an N, N+1 lobe type pump, dirt clearances are provided at the bases of the interlobe roots 22 of the annulus 14 and the shaping and dimensioning of the inner rotor and annulus are such that elsewhere there is a normal running clearance at the zones of drive contact between the two rotors. To prevent the creation of excessive clearances in the positions of full mesh especially at position D, the inner rotor 10 and annulus 14 are conjugate (as defined) such that at positions B and D normal running clearances are maintained.
EP82303950A 1981-08-15 1982-07-27 N/n +1 lobed rotary fluid pumps Withdrawn EP0072636A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8124995 1981-08-15
GB08124995A GB2104153B (en) 1981-08-15 1981-08-15 Rotary positive-displacement fluid-pumps

Publications (2)

Publication Number Publication Date
EP0072636A2 EP0072636A2 (en) 1983-02-23
EP0072636A3 true EP0072636A3 (en) 1983-03-09

Family

ID=10523975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82303950A Withdrawn EP0072636A3 (en) 1981-08-15 1982-07-27 N/n +1 lobed rotary fluid pumps

Country Status (3)

Country Link
EP (1) EP0072636A3 (en)
ES (1) ES514979A0 (en)
GB (1) GB2104153B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0173778B1 (en) * 1984-09-05 1990-03-07 Hobourn Engineering Limited Improvements relating to pumps
CH667492A5 (en) * 1985-08-31 1988-10-14 Wankel Felix INNER AXIS ROTARY PISTON.
EP0254077B1 (en) * 1986-07-19 1990-11-14 B a r m a g AG Internal gear pump
GB2394512A (en) * 2002-10-22 2004-04-28 Concentric Pumps Ltd Pump rotor set with increased fill limit

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1486836A (en) * 1923-04-28 1924-03-11 Hill Compressor & Pump Company Rotary-pump pressure control
US1682563A (en) * 1921-11-05 1928-08-28 Myron F Hill Internal rotor
US2031888A (en) * 1928-08-24 1936-02-25 Hill Engineering Company Inc Tooth curve for rotors and gears
US3126833A (en) * 1964-03-31 Figures
GB958779A (en) * 1960-05-19 1964-05-27 Robert Wesley Brundage Improvements in gear type hydraulic pumps and motors
US3273502A (en) * 1964-02-24 1966-09-20 Stewart Warner Corp Pumping and metering device
US3361074A (en) * 1965-01-15 1968-01-02 Eckerle Otto Gear pump having a rotor shaft integral with the crown gear
US3536426A (en) * 1968-04-03 1970-10-27 Novelty Tool Co Inc Gear pump having eccentrically arranged internal and external gears
GB1233376A (en) * 1967-11-17 1971-05-26
DD106219A1 (en) * 1973-06-20 1974-06-05
US3824047A (en) * 1973-03-23 1974-07-16 Dermott H Mc Floating rotary ring member of fluid displacement device
GB2047349A (en) * 1979-04-12 1980-11-26 Gilardini Spa Rotary Pumps

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126833A (en) * 1964-03-31 Figures
US1682563A (en) * 1921-11-05 1928-08-28 Myron F Hill Internal rotor
US1486836A (en) * 1923-04-28 1924-03-11 Hill Compressor & Pump Company Rotary-pump pressure control
US2031888A (en) * 1928-08-24 1936-02-25 Hill Engineering Company Inc Tooth curve for rotors and gears
GB958779A (en) * 1960-05-19 1964-05-27 Robert Wesley Brundage Improvements in gear type hydraulic pumps and motors
US3273502A (en) * 1964-02-24 1966-09-20 Stewart Warner Corp Pumping and metering device
US3361074A (en) * 1965-01-15 1968-01-02 Eckerle Otto Gear pump having a rotor shaft integral with the crown gear
GB1233376A (en) * 1967-11-17 1971-05-26
US3536426A (en) * 1968-04-03 1970-10-27 Novelty Tool Co Inc Gear pump having eccentrically arranged internal and external gears
US3824047A (en) * 1973-03-23 1974-07-16 Dermott H Mc Floating rotary ring member of fluid displacement device
DD106219A1 (en) * 1973-06-20 1974-06-05
GB2047349A (en) * 1979-04-12 1980-11-26 Gilardini Spa Rotary Pumps

Also Published As

Publication number Publication date
EP0072636A2 (en) 1983-02-23
ES8400180A1 (en) 1983-10-16
GB2104153A (en) 1983-03-02
GB2104153B (en) 1984-08-30
ES514979A0 (en) 1983-10-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19830610

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840522

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CHILD, ROBIN EDWARD