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TW200607927A - Screw pump and screw gear - Google Patents

Screw pump and screw gear

Info

Publication number
TW200607927A
TW200607927A TW094119574A TW94119574A TW200607927A TW 200607927 A TW200607927 A TW 200607927A TW 094119574 A TW094119574 A TW 094119574A TW 94119574 A TW94119574 A TW 94119574A TW 200607927 A TW200607927 A TW 200607927A
Authority
TW
Taiwan
Prior art keywords
variation
angle
screw
rotation
pump
Prior art date
Application number
TW094119574A
Other languages
Chinese (zh)
Other versions
TWI281531B (en
Inventor
Shinya Yamamoto
Satoru Kuramoto
Ryosuke Koshizaka
Hideyuki Ito
Original Assignee
Toyota Jidoshokki Kk
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 Toyota Jidoshokki Kk filed Critical Toyota Jidoshokki Kk
Publication of TW200607927A publication Critical patent/TW200607927A/en
Application granted granted Critical
Publication of TWI281531B publication Critical patent/TWI281531B/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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

The crew pump of the present application comprises a pair of screw rotors acting as a function of fluid transfer body. Regarding the rotation angle x around the axis line of each screw rotor, the variation of lead angle θ starting from the rotation start angle O of rotation angle x corresponding the start point of screw thread to the rotation end angle E of rotation angle x corresponding the end point of screw thread can be represented by lead angle variation function θ (x). Said lead angle variation function θ (x) is comprised by the combination of plural variation functions θ1(x), θ 2(x) of different variation states. According to the way of plural variation functionsθ1(x), θ 2(x) combination, it can set the variation type of lead angle θ. Thus it can set the fluid compression characteristics of pump arbitrarily according to the relation with the axial length L of screw rotors.
TW094119574A 2004-06-15 2005-06-14 Screw pump and screw gear TWI281531B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004177278 2004-06-15

Publications (2)

Publication Number Publication Date
TW200607927A true TW200607927A (en) 2006-03-01
TWI281531B TWI281531B (en) 2007-05-21

Family

ID=35509749

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094119574A TWI281531B (en) 2004-06-15 2005-06-14 Screw pump and screw gear

Country Status (6)

Country Link
US (1) US20090016920A1 (en)
EP (1) EP1767785A1 (en)
JP (1) JPWO2005124154A1 (en)
CN (1) CN1969126A (en)
TW (1) TWI281531B (en)
WO (1) WO2005124154A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI397633B (en) * 2009-03-09 2013-06-01 Furukawa Ind Machinery Systems Co Ltd Uniaxial eccentric screw pump

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101150971B1 (en) * 2009-10-22 2012-06-01 주식회사 코디박 Screw rotor type vaccum pump
CN106438370B (en) * 2016-12-07 2018-07-06 中国石油大学(华东) A kind of varying pitch conical screw rotor of self-balancing
DE202018000178U1 (en) * 2018-01-12 2019-04-15 Leybold Gmbh compressor
EP4474650A1 (en) * 2023-06-09 2024-12-11 Illinois Tool Works Inc. Screw pump and its components
US12533995B2 (en) 2023-08-31 2026-01-27 Illinois Tool Works Inc. Battery electric vehicle temperature-regulation system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807911A (en) * 1971-08-02 1974-04-30 Davey Compressor Co Multiple lead screw compressor
US4714418A (en) * 1984-04-11 1987-12-22 Hitachi, Ltd. Screw type vacuum pump
US4792294A (en) * 1986-04-11 1988-12-20 Mowli John C Two-stage screw auger pumping apparatus
JP3661885B2 (en) * 1995-07-13 2005-06-22 大亜真空株式会社 Screw vacuum pump and screw gear
JP3773650B2 (en) * 1998-03-23 2006-05-10 ナブテスコ株式会社 Vacuum pump
JP2000136787A (en) * 1998-10-30 2000-05-16 Teijin Seiki Co Ltd Vacuum pump
EP1070848B1 (en) * 1999-07-19 2004-04-14 Sterling Fluid Systems (Germany) GmbH Positive displacement machine for compressible fluids
US6508639B2 (en) * 2000-05-26 2003-01-21 Industrial Technology Research Institute Combination double screw rotor assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI397633B (en) * 2009-03-09 2013-06-01 Furukawa Ind Machinery Systems Co Ltd Uniaxial eccentric screw pump

Also Published As

Publication number Publication date
JPWO2005124154A1 (en) 2008-04-10
CN1969126A (en) 2007-05-23
WO2005124154A1 (en) 2005-12-29
US20090016920A1 (en) 2009-01-15
EP1767785A1 (en) 2007-03-28
TWI281531B (en) 2007-05-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees