JPS643286A - Scroll hydraulic machine - Google Patents

Scroll hydraulic machine

Info

Publication number
JPS643286A
JPS643286A JP16033687A JP16033687A JPS643286A JP S643286 A JPS643286 A JP S643286A JP 16033687 A JP16033687 A JP 16033687A JP 16033687 A JP16033687 A JP 16033687A JP S643286 A JPS643286 A JP S643286A
Authority
JP
Japan
Prior art keywords
check valve
atmospheric pressure
oil
pressure chamber
chamber
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
JP16033687A
Other languages
Japanese (ja)
Other versions
JPH0745874B2 (en
Inventor
Kozaburo Fujii
Isamu Eto
Mitsuhiro Nishida
Sumio Sumoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16033687A priority Critical patent/JPH0745874B2/en
Publication of JPS643286A publication Critical patent/JPS643286A/en
Publication of JPH0745874B2 publication Critical patent/JPH0745874B2/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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/023—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where both members are moving

Landscapes

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

Abstract

PURPOSE:To keep an intake side in a high vacuum by providing between a scroll and a driving shaft with a discharge chamber and a check valve openably fitted in an exhaust passage, and moreover a compression chamber, an oil feed passage, and an oil passage communicating with an atmospheric pressure chamber. CONSTITUTION:Fluid drawn in by the rotation of both scrolls 29, 49 makes a check valve 48 open, and is discharged through an exhaust passage 36a and an atmospheric pressure chamber 21 from a discharge pipe 24 into atmospheric air. A check valve 48 checks the counterflow of the fluid. When a valve 45 is kept open, an oil in the atmospheric pressure chamber 21 can be always supplied through an oil feed passage 37, 44 into a compression chamber 50. Thus a fluid intake side cen be set and kept higher in the degree of vacuum than its discharge side.
JP16033687A 1987-06-26 1987-06-26 Scroll fluid machinery Expired - Lifetime JPH0745874B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16033687A JPH0745874B2 (en) 1987-06-26 1987-06-26 Scroll fluid machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16033687A JPH0745874B2 (en) 1987-06-26 1987-06-26 Scroll fluid machinery

Publications (2)

Publication Number Publication Date
JPS643286A true JPS643286A (en) 1989-01-09
JPH0745874B2 JPH0745874B2 (en) 1995-05-17

Family

ID=15712771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16033687A Expired - Lifetime JPH0745874B2 (en) 1987-06-26 1987-06-26 Scroll fluid machinery

Country Status (1)

Country Link
JP (1) JPH0745874B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04175487A (en) * 1990-11-07 1992-06-23 Mitsubishi Electric Corp Scroll fluid device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04175487A (en) * 1990-11-07 1992-06-23 Mitsubishi Electric Corp Scroll fluid device

Also Published As

Publication number Publication date
JPH0745874B2 (en) 1995-05-17

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