WO2005066502A1 - 内接型ギアポンプ - Google Patents
内接型ギアポンプ Download PDFInfo
- Publication number
- WO2005066502A1 WO2005066502A1 PCT/JP2004/019254 JP2004019254W WO2005066502A1 WO 2005066502 A1 WO2005066502 A1 WO 2005066502A1 JP 2004019254 W JP2004019254 W JP 2004019254W WO 2005066502 A1 WO2005066502 A1 WO 2005066502A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- outer rotor
- peripheral teeth
- metal
- teeth
- Prior art date
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
- F04C2/10—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
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- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/20—Resin
Definitions
- the present invention relates to an internal gear pump used for a fuel pump, an oil pump, and the like of an automobile.
- the internal gear pump is configured by eccentrically mounting an inner rotor having teeth on its outer periphery which meshes with the teeth of the outer rotor in an outer rotor having teeth on its inner periphery.
- the number of teeth of the outer rotor is one more than the number of teeth of the inner rotor.
- the inner rotor has a cylindrical central hole for connecting a drive shaft, and this central hole passes through the central axis of the inner rotor.
- the two ports are assembled in a casing having a suction port and a discharge port on both sides of a plane passing through the central axes of these two ports.
- both rotors are manufactured by, for example, compressing and molding a raw material powder mainly composed of a metal, heating and sintering the raw material powder.
- Patent Document 1 Japanese Patent Application Laid-Open No. 6-249752
- the problem to be solved by the present invention is that the inscribed gear that reduces noise and has little pulsation is used.
- the point is to provide a pump.
- a first aspect of the present invention includes an outer rotor rotatably mounted in a casing and having inner peripheral teeth, and an inner rotor having outer peripheral teeth mated with the inner peripheral teeth of the outer rotor.
- An inner gear pump wherein the outer rotor is formed of metal and the inner rotor is formed of synthetic resin.
- a second aspect of the present invention is the internal gear pump according to claim 1, wherein the metal is an iron-based sintered metal, and the synthetic resin is an engineering plastic.
- the outer rotor and the inner rotor come into contact with the inner peripheral teeth made of metal and the outer peripheral teeth made of synthetic resin. Since the rotor can be made of metal, the strength can be secured, and the rotor can withstand liquid pressure, so that pulsation and the like hardly occur.
- the outer rotor by forming the outer rotor from an iron-based sintered metal, the inner peripheral teeth and the like can be formed relatively easily, and the inner rotor can be engineered. The strength and the like can be ensured by being formed of plastic.
- FIG. 1 is a sectional view showing a first embodiment of the present invention.
- FIG. 1 shows a first embodiment, in which an inscribed gear pump is an outer rotor 3 which is a rotating body provided with inner peripheral teeth 2 rotatably provided coaxially in a cylindrical portion la of a casing 1, and An inner rotor 5, which is a rotating body having outer teeth 4 fitted to the inner teeth 2 of the outer rotor 3, supports the inner rotor 5, and the rotation center O of the inner rotor 5 is connected to the outer rotor 5. Drive that keeps the rotor 3 eccentric from the rotation center O in a predetermined direction
- a shaft (not shown) is provided with an insertion hole 6.
- a gap S is formed between the tooth surfaces of the teeth 2 and 4 of the pair of rotors 3 and 5.
- a portion of the casing 1 facing the end surfaces of the rotors 3 and 5 is provided with a suction port 7 for supplying a liquid such as liquid fuel or hydraulic oil into the gap S, and a suction port 7 sealed in the gap S. The discharged liquid is discharged, and a discharge port 8 for guiding the liquid to the outside of the casing 1 is formed.
- the outer rotor 3 is formed of a metal such as an iron-based sintered metal.
- Iron-based sintered metal preferably stainless steel-based sintered metal
- the inner rotor 5 is formed of an engineering plastic used in place of metal in the industrial field.
- engineering plastics besides polycarbonate and polyamide, they have excellent oil resistance, chemical resistance, and sulfur resistance, especially PEEK (polyether ether ketone) and PPS (polyphenylene sulfide), as well as high strength and durability. Is preferable.
- Engineering plastics are molded by injecting molten resin into the mold cavity and then cooling and solidifying. The insertion hole 6 is formed at the same time as the molding.
- the operation of the above configuration will be described.
- the inner peripheral teeth 2 formed by the iron-based sintered metal and the outer peripheral teeth 4 formed by the engineering plastic are brought into contact with each other, and the inner teeth 2 are formed.
- the liquid is sucked from the suction port 7 when the gap S increases, and the sucked liquid is supplied to the rotors 3, 5. Transported by rotation, and further When the gap S decreases, the liquid is discharged from the discharge port 8.
- the inner teeth 2 and the outer teeth 4 come into contact with each other, the inner teeth 2 are formed of an iron-based sintered metal, but the outer teeth 4 are formed of an engineering plastic. As a result, both rotors 3 and 5 come into contact with the iron-based sintered metal and the engineering plastic, and the metal contact noise accompanying metal-to-metal contact is eliminated.
- the relative rotation of the two rotors 3, 5 changes the volume of the gap S formed between the inner peripheral teeth 2 and the outer peripheral teeth 4 and increases the liquid pressure.
- the pressure that presses the outer rotor 3 against the casing 1 is increased, and the outer rotor 3 is easily deformed.
- the outer rotor 3 is made of an iron-based sintered metal, so that the outer rotor 3 is formed of an iron-based sintered metal. Can be prevented. Since the outer rotor 3 is formed of iron-based sintered metal, the thickness from the outer periphery of the outer rotor 3 to the bottom of the inner peripheral teeth 2 can be reduced.
- the outer rotor 3 by forming the outer rotor 3 from an iron-based sintered metal, the inner peripheral teeth 2 and the like can be formed relatively easily using a molding die. By forming it, strength and the like can be secured.
- the inscribed gear pump that works in the present invention can be applied to various uses of industrial equipment and household equipment in addition to automobile fuel pumps and oil pumps.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003431231A JP2005188399A (ja) | 2003-12-25 | 2003-12-25 | 内接型ギアポンプ |
JP2003-431231 | 2003-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005066502A1 true WO2005066502A1 (ja) | 2005-07-21 |
Family
ID=34746852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/019254 WO2005066502A1 (ja) | 2003-12-25 | 2004-12-22 | 内接型ギアポンプ |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2005188399A (ja) |
WO (1) | WO2005066502A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7669577B2 (en) | 2008-02-07 | 2010-03-02 | Kohler Co. | Gerotor and method of assembling the same |
JP2012184764A (ja) * | 2011-03-03 | 2012-09-27 | Ti Group Automotive Systems Llc | 容積移送式流体ポンプ |
WO2016149246A1 (en) * | 2015-03-16 | 2016-09-22 | Saudi Arabian Oil Company | Equal-walled gerotor pump for wellbore applications |
US11371326B2 (en) | 2020-06-01 | 2022-06-28 | Saudi Arabian Oil Company | Downhole pump with switched reluctance motor |
US11499563B2 (en) | 2020-08-24 | 2022-11-15 | Saudi Arabian Oil Company | Self-balancing thrust disk |
US11591899B2 (en) | 2021-04-05 | 2023-02-28 | Saudi Arabian Oil Company | Wellbore density meter using a rotor and diffuser |
US11644351B2 (en) | 2021-03-19 | 2023-05-09 | Saudi Arabian Oil Company | Multiphase flow and salinity meter with dual opposite handed helical resonators |
US11913464B2 (en) | 2021-04-15 | 2024-02-27 | Saudi Arabian Oil Company | Lubricating an electric submersible pump |
US11920469B2 (en) | 2020-09-08 | 2024-03-05 | Saudi Arabian Oil Company | Determining fluid parameters |
US11994016B2 (en) | 2021-12-09 | 2024-05-28 | Saudi Arabian Oil Company | Downhole phase separation in deviated wells |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9429149B2 (en) * | 2012-05-15 | 2016-08-30 | Sabic Global Technologies B.V. | Polyetherimide pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1369588A1 (de) * | 2002-06-04 | 2003-12-10 | Siemens Aktiengesellschaft | G-Rotorpumpe |
-
2003
- 2003-12-25 JP JP2003431231A patent/JP2005188399A/ja active Pending
-
2004
- 2004-12-22 WO PCT/JP2004/019254 patent/WO2005066502A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1369588A1 (de) * | 2002-06-04 | 2003-12-10 | Siemens Aktiengesellschaft | G-Rotorpumpe |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7669577B2 (en) | 2008-02-07 | 2010-03-02 | Kohler Co. | Gerotor and method of assembling the same |
JP2012184764A (ja) * | 2011-03-03 | 2012-09-27 | Ti Group Automotive Systems Llc | 容積移送式流体ポンプ |
US8840385B2 (en) | 2011-03-03 | 2014-09-23 | Ti Group Automotive Systems, L.L.C. | Positive displacement fluid pump |
US11162493B2 (en) | 2015-03-16 | 2021-11-02 | Saudi Arabian Oil Company | Equal-walled gerotor pump for wellbore applications |
US10138885B2 (en) | 2015-03-16 | 2018-11-27 | Saudi Arabian Oil Company | Equal-walled gerotor pump for wellbore applications |
US10584702B2 (en) | 2015-03-16 | 2020-03-10 | Saudi Arabian Oil Company | Equal-walled gerotor pump for wellbore applications |
WO2016149246A1 (en) * | 2015-03-16 | 2016-09-22 | Saudi Arabian Oil Company | Equal-walled gerotor pump for wellbore applications |
US11434905B2 (en) | 2015-03-16 | 2022-09-06 | Saudi Arabian Oil Company | Equal-walled gerotor pump for wellbore applications |
US11371326B2 (en) | 2020-06-01 | 2022-06-28 | Saudi Arabian Oil Company | Downhole pump with switched reluctance motor |
US11499563B2 (en) | 2020-08-24 | 2022-11-15 | Saudi Arabian Oil Company | Self-balancing thrust disk |
US11920469B2 (en) | 2020-09-08 | 2024-03-05 | Saudi Arabian Oil Company | Determining fluid parameters |
US11644351B2 (en) | 2021-03-19 | 2023-05-09 | Saudi Arabian Oil Company | Multiphase flow and salinity meter with dual opposite handed helical resonators |
US11591899B2 (en) | 2021-04-05 | 2023-02-28 | Saudi Arabian Oil Company | Wellbore density meter using a rotor and diffuser |
US11913464B2 (en) | 2021-04-15 | 2024-02-27 | Saudi Arabian Oil Company | Lubricating an electric submersible pump |
US11994016B2 (en) | 2021-12-09 | 2024-05-28 | Saudi Arabian Oil Company | Downhole phase separation in deviated wells |
Also Published As
Publication number | Publication date |
---|---|
JP2005188399A (ja) | 2005-07-14 |
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