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TW200607926A - Screw rotor and screw type fluid machine - Google Patents

Screw rotor and screw type fluid machine

Info

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
Application number
TW094116900A
Other languages
Chinese (zh)
Inventor
Tsuyoshi Nachi
Original Assignee
Nabtesco Corp
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 Nabtesco Corp filed Critical Nabtesco Corp
Publication of TW200607926A publication Critical patent/TW200607926A/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
    • 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.
TW094116900A 2004-05-24 2005-05-24 Screw rotor and screw type fluid machine TW200607926A (en)

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 (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5024750B2 (en) * 2006-08-20 2012-09-12 秀隆 渡辺 Rotary thermal fluid equipment
US7798794B2 (en) 2006-09-05 2010-09-21 Kabushiki Kaisha Toyota Jidoshokki 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 Strictly sealed dry screw vacuum pump screw rotor molding 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) A completely smooth screw rotor
CN108757438B (en) * 2018-07-25 2023-08-18 中国石油大学(华东) A fully smooth screw rotor with small enclosed volume and its design method
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 A screw vacuum pump rotor and screw vacuum pump
CN112196792A (en) * 2020-10-29 2021-01-08 浙江栋斌橡塑螺杆有限公司 A screw pump rotor structure for vacuuming
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)

* Cited by examiner, † Cited by third party
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
CA2492495A1 (en) * 2002-10-04 2004-04-15 Ebara Densan Ltd. Screw pump and method of operating the same

Also Published As

Publication number Publication date
CN1961153A (en) 2007-05-09
KR20070027558A (en) 2007-03-09
US20080193317A1 (en) 2008-08-14
JPWO2005113984A1 (en) 2008-03-27
WO2005113984A1 (en) 2005-12-01
EP1750011A1 (en) 2007-02-07

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