WO2007106500A3 - Low noise gear pump - Google Patents

Low noise gear pump Download PDF

Info

Publication number
WO2007106500A3
WO2007106500A3 PCT/US2007/006354 US2007006354W WO2007106500A3 WO 2007106500 A3 WO2007106500 A3 WO 2007106500A3 US 2007006354 W US2007006354 W US 2007006354W WO 2007106500 A3 WO2007106500 A3 WO 2007106500A3
Authority
WO
WIPO (PCT)
Prior art keywords
point
low noise
gear
profile
points
Prior art date
Application number
PCT/US2007/006354
Other languages
French (fr)
Other versions
WO2007106500A2 (en
Inventor
James A Ii O'brien
Original Assignee
Hybra Drive Systems Llc
James A Ii O'brien
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 Hybra Drive Systems Llc, James A Ii O'brien filed Critical Hybra Drive Systems Llc
Priority to JP2009500441A priority Critical patent/JP5068306B2/en
Priority to CN2007800168725A priority patent/CN101443578B/en
Priority to EP07753013A priority patent/EP1994308A2/en
Priority to BRPI0708783-7A priority patent/BRPI0708783A2/en
Publication of WO2007106500A2 publication Critical patent/WO2007106500A2/en
Publication of WO2007106500A3 publication Critical patent/WO2007106500A3/en

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
    • F04C2/088—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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps 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
    • F04C2/18—Rotary-piston machines or pumps 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 similar tooth forms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

A low noise gear set 300 for use generally and preferably with a power plant 11 having an engine 12 driving a pump 16 connected to a low pressure fluid source 18, generating high pressure fluid at an output 107, 252, 254. The idle gear 312 meshes with the drive gear 310 along two points 314, 316 of the profile 318, 320 of the corresponding gears 310, 312. The first point 314 being the root 326 of one gear tooth meshing with the tip 328 of the opposite gear tooth creating an initial first contact point 314 and a subsequent second point 316 along the profile 318, 320 when the teeth are disengaging at the first point 314 and engaging at the second point 316, forming a sealed area 322, allowing the fluid 324 to hydrostatically escape between the points 314, 316.
PCT/US2007/006354 2006-03-13 2007-03-13 Low noise gear pump WO2007106500A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009500441A JP5068306B2 (en) 2006-03-13 2007-03-13 Low noise gear pump
CN2007800168725A CN101443578B (en) 2006-03-13 2007-03-13 Low noise gear pump
EP07753013A EP1994308A2 (en) 2006-03-13 2007-03-13 Low noise gear pump
BRPI0708783-7A BRPI0708783A2 (en) 2006-03-13 2007-03-13 pump gear set, low noise gear set for use with a motor set, gear set for reducing wear by forcing hydrostatic support between the gear contact surfaces, and method for providing a low noise gear pump with simultaneous reduction of gear wear

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78177506P 2006-03-13 2006-03-13
US60/781,775 2006-03-13

Publications (2)

Publication Number Publication Date
WO2007106500A2 WO2007106500A2 (en) 2007-09-20
WO2007106500A3 true WO2007106500A3 (en) 2008-01-03

Family

ID=38510061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/006354 WO2007106500A2 (en) 2006-03-13 2007-03-13 Low noise gear pump

Country Status (5)

Country Link
EP (1) EP1994308A2 (en)
JP (1) JP5068306B2 (en)
CN (1) CN101443578B (en)
BR (1) BRPI0708783A2 (en)
WO (1) WO2007106500A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3098547B1 (en) * 2019-07-08 2022-04-29 Safran Aircraft Engines HOLDING ASSEMBLY FOR A GEAR TRAIN IN A TURBOMACHINE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462924A (en) * 1944-03-01 1949-03-01 Equi Flow Inc Gear tooth profile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132783B2 (en) * 1972-07-11 1976-09-14
CN1069552A (en) * 1992-05-06 1993-03-03 朱寿和 Gear pump with variable capacity
CN2154923Y (en) * 1993-04-05 1994-02-02 沈恒 Wear-less gear pump
CN2298357Y (en) * 1996-09-19 1998-11-25 葛开茂 Variable gear pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462924A (en) * 1944-03-01 1949-03-01 Equi Flow Inc Gear tooth profile

Also Published As

Publication number Publication date
JP2009530530A (en) 2009-08-27
CN101443578A (en) 2009-05-27
JP5068306B2 (en) 2012-11-07
BRPI0708783A2 (en) 2011-06-14
CN101443578B (en) 2012-10-10
WO2007106500A2 (en) 2007-09-20
EP1994308A2 (en) 2008-11-26

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