EP1201927A3 - Vacuum pump - Google Patents

Vacuum pump Download PDF

Info

Publication number
EP1201927A3
EP1201927A3 EP01124365A EP01124365A EP1201927A3 EP 1201927 A3 EP1201927 A3 EP 1201927A3 EP 01124365 A EP01124365 A EP 01124365A EP 01124365 A EP01124365 A EP 01124365A EP 1201927 A3 EP1201927 A3 EP 1201927A3
Authority
EP
European Patent Office
Prior art keywords
bellows
pipe
vacuum pump
incorporates
constitute
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP01124365A
Other languages
German (de)
French (fr)
Other versions
EP1201927A2 (en
EP1201927B1 (en
Inventor
Shinya Yamamoto
Yuji Hashimoto
Masahiro Kawaguchi
Hitoshi Shoji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyota Industries 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 Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP1201927A2 publication Critical patent/EP1201927A2/en
Publication of EP1201927A3 publication Critical patent/EP1201927A3/en
Application granted granted Critical
Publication of EP1201927B1 publication Critical patent/EP1201927B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C18/126—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 radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/065—Noise dampening volumes, e.g. muffler chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

A main body of a multi-stage Roots pump 11 is incorporated in a cover 47. A connecting flange 39, a muffler 40, a guide pipe 41 and a discharge pipe 42 constitute a discharge piping mechanism 64. The discharge pipe 42 incorporates a bellows 421. A connecting flange 58 and a suction pipe 59 constitute a suction piping mechanism 65. The suction pipe 59 incorporates a bellows 591. The bellows 421, 591 are incorporated in the cover 47.
Thus, loads generated when the bellows constituting part of the gas flow path of a vacuum pump are elastically deformed, by virtue of changes in internal pressures, are prevented from extending to auxiliary equipment.
EP20010124365 2000-10-23 2001-10-23 Vacuum pump Expired - Lifetime EP1201927B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000322577 2000-10-23
JP2000322577A JP2002130170A (en) 2000-10-23 2000-10-23 Channel structure in vacuum pump

Publications (3)

Publication Number Publication Date
EP1201927A2 EP1201927A2 (en) 2002-05-02
EP1201927A3 true EP1201927A3 (en) 2003-01-22
EP1201927B1 EP1201927B1 (en) 2004-09-01

Family

ID=18800431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010124365 Expired - Lifetime EP1201927B1 (en) 2000-10-23 2001-10-23 Vacuum pump

Country Status (3)

Country Link
EP (1) EP1201927B1 (en)
JP (1) JP2002130170A (en)
DE (1) DE60105249T2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3922140B2 (en) 2002-09-06 2007-05-30 株式会社豊田自動織機 Fluid pump device
JP4007130B2 (en) * 2002-09-10 2007-11-14 株式会社豊田自動織機 Vacuum pump
JP3896930B2 (en) 2002-09-10 2007-03-22 株式会社豊田自動織機 Fluid pump device
JP3991918B2 (en) 2003-05-19 2007-10-17 株式会社豊田自動織機 Roots pump
JP4702236B2 (en) * 2006-09-12 2011-06-15 株式会社豊田自動織機 Vacuum pump shutdown control method and shutdown control apparatus
CN102297135B (en) * 2010-06-25 2013-09-04 宝山钢铁股份有限公司 Nonlinear sound elimination method and sound eliminator for high-power double-blade countercurrent cooling type Roots vacuum pump
CN104131962B (en) * 2013-11-25 2017-05-24 东莞四唯微型水泵有限公司 Vacuum air pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422766A (en) * 1965-03-31 1969-01-21 English Electric Co Ltd Pump assemblies
JPS5638598A (en) * 1979-09-05 1981-04-13 Hitachi Ltd Exhausting device of turbo-molecular pump
JPS618479A (en) * 1984-06-25 1986-01-16 Fujitsu Ltd Vacuum unit
JPH0431675A (en) * 1990-05-25 1992-02-03 Hitachi Ltd Connecting member for vacuum
US5411376A (en) * 1993-12-15 1995-05-02 Walbro Corporation Fuel pump with noise suppression

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422766A (en) * 1965-03-31 1969-01-21 English Electric Co Ltd Pump assemblies
JPS5638598A (en) * 1979-09-05 1981-04-13 Hitachi Ltd Exhausting device of turbo-molecular pump
JPS618479A (en) * 1984-06-25 1986-01-16 Fujitsu Ltd Vacuum unit
JPH0431675A (en) * 1990-05-25 1992-02-03 Hitachi Ltd Connecting member for vacuum
US5411376A (en) * 1993-12-15 1995-05-02 Walbro Corporation Fuel pump with noise suppression

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 093 (M - 074) 17 June 1981 (1981-06-17) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 153 (M - 484) 3 June 1986 (1986-06-03) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 206 (M - 1248) 15 May 1992 (1992-05-15) *

Also Published As

Publication number Publication date
DE60105249D1 (en) 2004-10-07
EP1201927A2 (en) 2002-05-02
EP1201927B1 (en) 2004-09-01
JP2002130170A (en) 2002-05-09
DE60105249T2 (en) 2005-09-01

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