TW200607926A - Screw rotor and screw type fluid machine - Google Patents
Screw rotor and screw type fluid machineInfo
- Publication number
- TW200607926A TW200607926A TW094116900A TW94116900A TW200607926A TW 200607926 A TW200607926 A TW 200607926A TW 094116900 A TW094116900 A TW 094116900A TW 94116900 A TW94116900 A TW 94116900A TW 200607926 A TW200607926 A TW 200607926A
- Authority
- TW
- Taiwan
- Prior art keywords
- outer periphery
- pitch circle
- fluid machine
- type fluid
- screw
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids 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
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids 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 helical teeth, e.g. chevron-shaped, screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/082—Details specially related to intermeshing engagement type machines or engines
- F01C1/084—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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
This invention provides a screw type fluid machine whose leakage from the screw type fluid machine is always kept constant during operation; that is, the gap in an exhaust chamber is always kept substantially constant. Thus, in a screw type fluid machine, the axis-orthogonal sectional shape (805) of the tooth form of a screw rotor is formed by curved lines including an arc (1) constituting the tooth bottom, an arc (3) constituting the outer periphery, and two curved lines that connect the outer periphery with the tooth bottom, wherein one (5) of the two curved lines is a trochoidal curved line generated by points on the outer periphery of a mating screw rotor, while the other of the two curved lines is bisected by the pitch circle into two portions, one from the pitch circle to the outer periphery, and the other from the pitch circle to the tooth bottom; the portion from the pitch circle to the tooth bottom (7) is formed by a predetermined curved line, while the portion from the pitch circle to the outer periphery (9) is formed by the curved line, generated by the bisected predetermined curved line, of the mating screw rotor to complete a tooth form shape.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004153957 | 2004-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200607926A true TW200607926A (en) | 2006-03-01 |
Family
ID=35428448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW094116900A TW200607926A (en) | 2004-05-24 | 2005-05-24 | Screw rotor and screw type fluid machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080193317A1 (en) |
EP (1) | EP1750011A1 (en) |
JP (1) | JPWO2005113984A1 (en) |
KR (1) | KR20070027558A (en) |
CN (1) | CN1961153A (en) |
TW (1) | TW200607926A (en) |
WO (1) | WO2005113984A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5024750B2 (en) * | 2006-08-20 | 2012-09-12 | 秀隆 渡辺 | Rotary thermal fluid equipment |
KR100976112B1 (en) | 2006-09-05 | 2010-08-16 | 가부시키가이샤 도요다 지도숏키 | Screw pump and screw rotor |
CN100432434C (en) * | 2006-09-29 | 2008-11-12 | 中国船舶重工集团公司第七一一研究所 | Noval tooth-type screw rod |
CN102465871B (en) * | 2010-11-17 | 2014-11-26 | 上海格什特螺杆科技有限公司 | Screw rotor end face tooth type |
CN103233894B (en) * | 2013-04-26 | 2015-11-18 | 巫修海 | Strict sealing-type dry-type screw vacuum pump screw rotor molded line |
CN107110156B (en) * | 2015-01-05 | 2018-08-24 | 株式会社爱发科 | Screw vacuum pump |
CN106762661B (en) * | 2016-01-11 | 2018-08-14 | 台州职业技术学院 | A kind of dry screw vacuum pump screw rotor end face molded line |
CN106438357B (en) * | 2016-11-28 | 2018-07-06 | 浙江创为真空设备股份有限公司 | A kind of screw vacuum pump |
CN107084131B (en) * | 2017-06-08 | 2019-05-31 | 中国石油大学(华东) | A kind of complete smooth screw rotor based on eccentric circle involute |
CN107989792B (en) * | 2018-01-22 | 2023-09-12 | 中国石油大学(华东) | Full smooth screw rotor |
CN108757438B (en) * | 2018-07-25 | 2023-08-18 | 中国石油大学(华东) | Full-smooth screw rotor with small enclosed volume and design method thereof |
CN110360113B (en) * | 2019-07-18 | 2021-03-02 | 合肥工业大学 | Double-end symmetrical rotor profile based on single-end screw rotor profile design |
CN110645172B (en) * | 2019-11-01 | 2021-01-19 | 西安交通大学 | Screw vacuum pump rotor and screw vacuum pump |
CN112746958B (en) * | 2021-01-04 | 2022-07-12 | 西安交通大学 | Double-screw compression and expansion integrated machine for fuel cell |
CN114876795B (en) * | 2022-04-25 | 2024-05-14 | 江阴全玉节能环保真空设备制造有限公司 | Energy-saving backflow-preventing variable-pitch screw vacuum pump |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3472445A (en) * | 1968-04-08 | 1969-10-14 | Arthur E Brown | Rotary positive displacement machines |
US4088427A (en) * | 1974-06-24 | 1978-05-09 | Atlas Copco Aktiebolag | Rotors for a screw rotor machine |
JPS5746083A (en) * | 1980-09-01 | 1982-03-16 | Shigeyoshi Osada | Improved quimby pump |
JPS6415485A (en) * | 1987-07-07 | 1989-01-19 | Fuji Heavy Ind Ltd | Root's blower |
KR0133154B1 (en) * | 1994-08-22 | 1998-04-20 | 이종대 | Screw pump |
JP2924997B2 (en) * | 1995-01-11 | 1999-07-26 | 株式会社荏原製作所 | Screw machine |
JP2904719B2 (en) * | 1995-04-05 | 1999-06-14 | 株式会社荏原製作所 | Screw rotor, method for determining cross-sectional shape of tooth profile perpendicular to axis, and screw machine |
US6244844B1 (en) * | 1999-03-31 | 2001-06-12 | Emerson Electric Co. | Fluid displacement apparatus with improved helical rotor structure |
JP4282867B2 (en) * | 2000-03-15 | 2009-06-24 | ナブテスコ株式会社 | Screw rotor and screw machine |
JP4549857B2 (en) * | 2002-10-04 | 2010-09-22 | 株式会社荏原電産 | Screw pump and operating method thereof |
-
2005
- 2005-05-24 TW TW094116900A patent/TW200607926A/en unknown
- 2005-05-24 CN CNA2005800168891A patent/CN1961153A/en active Pending
- 2005-05-24 US US11/569,536 patent/US20080193317A1/en not_active Abandoned
- 2005-05-24 JP JP2006513756A patent/JPWO2005113984A1/en not_active Ceased
- 2005-05-24 KR KR1020067024777A patent/KR20070027558A/en not_active Application Discontinuation
- 2005-05-24 WO PCT/JP2005/009415 patent/WO2005113984A1/en active Application Filing
- 2005-05-24 EP EP05743311A patent/EP1750011A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPWO2005113984A1 (en) | 2008-03-27 |
WO2005113984A1 (en) | 2005-12-01 |
US20080193317A1 (en) | 2008-08-14 |
CN1961153A (en) | 2007-05-09 |
EP1750011A1 (en) | 2007-02-07 |
KR20070027558A (en) | 2007-03-09 |
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