JP5078969B2 - ギアポンプ - Google Patents
ギアポンプ Download PDFInfo
- Publication number
- JP5078969B2 JP5078969B2 JP2009248361A JP2009248361A JP5078969B2 JP 5078969 B2 JP5078969 B2 JP 5078969B2 JP 2009248361 A JP2009248361 A JP 2009248361A JP 2009248361 A JP2009248361 A JP 2009248361A JP 5078969 B2 JP5078969 B2 JP 5078969B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- slot
- width
- outer position
- radially outer
- 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 - Fee Related
Links
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
- F04C15/0049—Equalization of pressure pulses
-
- 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
-
- 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)
Description
半径方向最内側端部52における深さd4は、幅d2よりも小さく、長さd3よりもさらに小さい。例えば、深さd4は、長さd3の約5〜10%である。一実施例では、幅d1は、ギアの幅の5〜10%程度であり、幅d2は、幅d1の半分に等しい。
Claims (3)
- 半径方向外側位置に複数のギア歯を有し、かつ第1の軸を中心に回転するように取付けられた駆動ギアと、
半径方向外側位置に複数のギア歯を有し、かつ第2の軸を中心に回転するように取付けられた被駆動ギアと、
を備え、
駆動ギアのギア歯は、接触面において被駆動ギアのギア歯と係合して、被駆動ギアを回転させ、
駆動ギアのギア歯および被駆動ギアのギア歯の一方の接触面にスロットが形成され、
前記ギア歯の一方が被駆動ギアのギア歯であり、
スロットは、前記第2の軸に対して、半径方向外側位置から半径方向最内側端部に延び、
スロットは、被駆動ギアのギア歯の先端部から半径方向内側に延び、
スロットの幅は、第2の軸に沿って画定され、該スロットの幅は、半径方向外側位置から半径方向最内側端部に向かうにつれて減少し、
スロットの深さは、被駆動ギアのギア歯の接触面へと延びる寸法として画定され、かつ半径方向外側位置から半径方向最内側端部に向かうにつれて増加し、
スロットの長さは、半径方向外側位置と半径方向最内側端部との間の距離として画定され、かつ半径方向外側位置における幅よりも大きいことを特徴とするギアポンプ。 - 半径方向外側位置における幅は、半径方向最内側端部における幅の2倍以上であることを特徴とする請求項1に記載のギアポンプ。
- 前記長さと前記半径方向外側位置における幅との比は、1.5より大きいことを特徴とする請求項1に記載のギアポンプ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/337,868 | 2008-12-18 | ||
US12/337,868 US8137085B2 (en) | 2008-12-18 | 2008-12-18 | Gear pump with slots in teeth to reduce cavitation |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010144714A JP2010144714A (ja) | 2010-07-01 |
JP5078969B2 true JP5078969B2 (ja) | 2012-11-21 |
Family
ID=41667717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009248361A Expired - Fee Related JP5078969B2 (ja) | 2008-12-18 | 2009-10-29 | ギアポンプ |
Country Status (3)
Country | Link |
---|---|
US (1) | US8137085B2 (ja) |
EP (1) | EP2199611B1 (ja) |
JP (1) | JP5078969B2 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8944793B2 (en) * | 2012-06-05 | 2015-02-03 | Hamilton Sundstrand Corporation | Flow and pressure ripple reduction with advance dual gear and bearing face cut |
US9068568B2 (en) | 2012-07-23 | 2015-06-30 | Hamilton Sundstrand Corporation | Inlet cutbacks for high speed gear pump |
US9776728B2 (en) | 2014-07-22 | 2017-10-03 | Hamilton Sundstrand Corporation | Dual-stage gear pump with reduced pressure ripple |
US9874208B2 (en) | 2015-01-21 | 2018-01-23 | Hamilton Sunstrand Corporation | Bearing faces with fluid channels for gear pumps |
EP3686431A1 (en) * | 2015-10-30 | 2020-07-29 | Gardner Denver Inc. | Complex screw rotors |
US10443597B2 (en) | 2016-01-12 | 2019-10-15 | Hamilton Sundstrand Corporation | Gears and gear pumps |
US10563653B2 (en) | 2016-01-12 | 2020-02-18 | Hamilton Sundstrand Corporation | Gear pump |
US9945376B2 (en) | 2016-03-16 | 2018-04-17 | Hamilton Sundstrand Corporation | Gear pump |
IT201800005956A1 (it) * | 2018-06-01 | 2019-12-01 | Macchina volumetrica ad ingranaggi con denti elicoidali |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1633793A (en) * | 1924-01-25 | 1927-06-28 | Hardinge Brothers Inc | Gear pump |
US1686867A (en) * | 1926-11-03 | 1928-10-09 | Lewis O Kuhn | Gear pump |
US1728528A (en) * | 1928-02-21 | 1929-09-17 | Cincinnati Ball Crank Co | Fluid-pressure rotor |
US2845031A (en) * | 1953-01-13 | 1958-07-29 | Francis W Guibert | Gear tooth construction for rotary fluid meters |
JPS4427586Y1 (ja) * | 1965-08-17 | 1969-11-17 | ||
GB1206402A (en) * | 1966-12-07 | 1970-09-23 | Plessey Co Ltd | Improvements in or relating to intermeshing gears in gear pumps |
GB1467441A (en) * | 1973-03-15 | 1977-03-16 | Lucas Industries Ltd | Hydraulic gear pumps and motors |
JPS5044909U (ja) * | 1973-08-22 | 1975-05-07 | ||
DE2421891A1 (de) * | 1974-05-07 | 1975-11-20 | Bosch Gmbh Robert | Zahnradmotor |
US4233005A (en) * | 1978-01-18 | 1980-11-11 | Lucas Industries Limited | Hydraulic gear pump with recesses in non-working gear flanks |
US4729727A (en) | 1985-12-23 | 1988-03-08 | Sundstrand Corporation | Gear pump with groove in end wall beginning at outer periphery of pumping chamber and widening toward gear teeth roots |
JPH0756268B2 (ja) | 1987-07-27 | 1995-06-14 | 株式会社ユニシアジェックス | オイルポンプ |
JPH02286889A (ja) * | 1989-04-28 | 1990-11-27 | Shimadzu Corp | 歯車ポンプ |
US5108275A (en) | 1990-12-17 | 1992-04-28 | Sager William F | Rotary pump having helical gear teeth with a small angle of wrap |
KR940006864B1 (ko) * | 1992-01-16 | 1994-07-28 | 구인회 | 캠기어 펌프장치 |
EP0754859A3 (de) * | 1996-06-07 | 1997-12-29 | Maag Pump Systems Textron AG | Zahnrad mit Bohrung |
US6149415A (en) | 1999-02-11 | 2000-11-21 | Viking Pump, Inc. | Internal gear pump having a feed groove aligned with the roots of the idler teeth |
US6506037B1 (en) | 1999-11-17 | 2003-01-14 | Carrier Corporation | Screw machine |
FR2828717A1 (fr) | 2001-08-16 | 2003-02-21 | Michelin Soc Tech | Pompe a engrenage |
JP2003083260A (ja) * | 2001-09-13 | 2003-03-19 | Koyo Seiko Co Ltd | ギヤポンプ |
JP2004176633A (ja) * | 2002-11-27 | 2004-06-24 | Toyoda Mach Works Ltd | ギヤポンプ |
DE10355214A1 (de) * | 2003-11-26 | 2005-06-30 | Robert Bosch Gmbh | Zahnradpumpe, insbesondere Kraftstoffpumpe |
US7040870B2 (en) | 2003-12-30 | 2006-05-09 | The Goodyear Tire & Rubber Company | Gear pump with gears having curved teeth and method of feeding elastomeric material |
US7094042B1 (en) | 2004-04-01 | 2006-08-22 | Hamilton Sundstrand Corporation | Dual-inlet gear pump with unequal flow capability |
FR2888895A3 (fr) * | 2005-07-20 | 2007-01-26 | Renault Sas | Pompe a engrenages |
-
2008
- 2008-12-18 US US12/337,868 patent/US8137085B2/en not_active Expired - Fee Related
-
2009
- 2009-10-29 JP JP2009248361A patent/JP5078969B2/ja not_active Expired - Fee Related
- 2009-12-18 EP EP09252832.2A patent/EP2199611B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP2199611A2 (en) | 2010-06-23 |
EP2199611B1 (en) | 2016-06-22 |
US20100158739A1 (en) | 2010-06-24 |
EP2199611A3 (en) | 2013-06-05 |
JP2010144714A (ja) | 2010-07-01 |
US8137085B2 (en) | 2012-03-20 |
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