TW200606341A - Screw vacuum pump - Google Patents

Screw vacuum pump

Info

Publication number
TW200606341A
TW200606341A TW094120431A TW94120431A TW200606341A TW 200606341 A TW200606341 A TW 200606341A TW 094120431 A TW094120431 A TW 094120431A TW 94120431 A TW94120431 A TW 94120431A TW 200606341 A TW200606341 A TW 200606341A
Authority
TW
Taiwan
Prior art keywords
screw rotor
irregular
lead
sectional shape
varied
Prior art date
Application number
TW094120431A
Other languages
English (en)
Inventor
Tadahiro Ohmi
Original Assignee
Univ Tohoku
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 Univ Tohoku filed Critical Univ Tohoku
Publication of TW200606341A publication Critical patent/TW200606341A/zh

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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
TW094120431A 2004-06-18 2005-06-20 Screw vacuum pump TW200606341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004181854 2004-06-18

Publications (1)

Publication Number Publication Date
TW200606341A true TW200606341A (en) 2006-02-16

Family

ID=35509750

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094120431A TW200606341A (en) 2004-06-18 2005-06-20 Screw vacuum pump

Country Status (5)

Country Link
US (1) US7637726B2 (zh)
EP (1) EP1780417A4 (zh)
JP (1) JP4839443B2 (zh)
TW (1) TW200606341A (zh)
WO (1) WO2005124155A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5639771B2 (ja) * 2010-03-10 2014-12-10 ユニ・チャーム株式会社 伸縮性シートの製造方法、及び製造装置
WO2013057761A1 (ja) * 2011-10-19 2013-04-25 国立大学法人東北大学 スクリューポンプ、及びスクリューポンプ用ロータ
CA3179438A1 (en) 2015-10-30 2017-05-04 Gardner Denver, Inc. Complex screw rotors
DE102016100957A1 (de) * 2016-01-20 2017-07-20 FRISTAM Pumpen Schaumburg GmbH Verdrängerpumpe

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR796274A (fr) * 1934-10-16 1936-04-03 Milo Ab Compresseur ou moteur hélicoïdal
US3180559A (en) * 1962-04-11 1965-04-27 John R Boyd Mechanical vacuum pump
CH635403A5 (de) 1978-09-20 1983-03-31 Edouard Klaey Schraubenspindelmaschine.
JPH05272478A (ja) * 1992-01-31 1993-10-19 Matsushita Electric Ind Co Ltd 真空ポンプ
JPH06307360A (ja) * 1993-04-27 1994-11-01 Matsushita Electric Ind Co Ltd 流体回転装置
DE19882986B4 (de) * 1998-03-23 2007-12-27 Taiko Kikai Industries Co., Ltd. Trockenvakuumpumpe
DE59909182D1 (de) * 1999-07-19 2004-05-19 Sterling Fluid Sys Gmbh Verdrängermaschine für kompressible Medien
TW463883U (en) * 2000-02-02 2001-11-11 Ind Tech Res Inst Dual-spiral rotor mechanism using pressure difference to automatically adjust gap
DE10019637B4 (de) * 2000-04-19 2012-04-26 Leybold Vakuum Gmbh Schraubenvakuumpumpe
TW515480U (en) * 2000-05-12 2002-12-21 Ind Tech Res Inst Non-symmetrical dual spiral rotors apparatus
JP3073810U (ja) * 2000-06-05 2000-12-15 財団法人工業技術研究院 非対称ツインスクリューロータ装置
JP2004263629A (ja) * 2003-03-03 2004-09-24 Tadahiro Omi スクリュー真空ポンプ

Also Published As

Publication number Publication date
US7637726B2 (en) 2009-12-29
US20070207050A1 (en) 2007-09-06
JP4839443B2 (ja) 2011-12-21
EP1780417A4 (en) 2012-04-18
WO2005124155A1 (ja) 2005-12-29
EP1780417A1 (en) 2007-05-02
JPWO2005124155A1 (ja) 2008-04-10

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