JPS56165796A - Turbo compressor - Google Patents

Turbo compressor

Info

Publication number
JPS56165796A
JPS56165796A JP6784780A JP6784780A JPS56165796A JP S56165796 A JPS56165796 A JP S56165796A JP 6784780 A JP6784780 A JP 6784780A JP 6784780 A JP6784780 A JP 6784780A JP S56165796 A JPS56165796 A JP S56165796A
Authority
JP
Japan
Prior art keywords
vicinity
impeller
inner circumferential
circumferential wall
suppressing members
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.)
Pending
Application number
JP6784780A
Other languages
Japanese (ja)
Inventor
Keiichi Nakanishi
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP6784780A priority Critical patent/JPS56165796A/en
Priority to EP81103727A priority patent/EP0040769A1/en
Publication of JPS56165796A publication Critical patent/JPS56165796A/en
Pending 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0253—Surge control by throttling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F04D29/464—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps adjusting flow cross-section, otherwise than by using adjustable stator blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

PURPOSE: To suppress the action of surging in a region of low flow rate with the method at a low cost, by arranging annular surge suppressing members with an impeller shaft as their center on an inner circumferential wall in the vicinity of an impeller.
CONSTITUTION: If a control signal is fed to an oil hydraulic actuator 25 from a control circuit and rods 24 are moved rightward, surge suppressing members 21 are protruded to a gas inlet passage 23 for an impeller 1. Of the streams flowing toward the impeller 1 through the inlet passage 23 from a suction port, a stream passing in the vicinity of an inner circumferential wall 14 is prevented by the surge suppressing members 21 and then hesitates, thus the stream in the vicinity of the inner circumferential wall 14 is caused almost not to flow in the vicinity of a root of the impeller 1. On the other hand, in the vicinity of a peripheral wall 13 a high speed stream flows into an area in the vicinity of the point end part in the impeller 1. Accordingly, a stall is never caused to a region of smaller flow rate than in the past.
COPYRIGHT: (C)1981,JPO&Japio
JP6784780A 1980-05-23 1980-05-23 Turbo compressor Pending JPS56165796A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6784780A JPS56165796A (en) 1980-05-23 1980-05-23 Turbo compressor
EP81103727A EP0040769A1 (en) 1980-05-23 1981-05-14 Arrangement for lowering the surge limit of a rotary type compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6784780A JPS56165796A (en) 1980-05-23 1980-05-23 Turbo compressor

Publications (1)

Publication Number Publication Date
JPS56165796A true JPS56165796A (en) 1981-12-19

Family

ID=13356750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6784780A Pending JPS56165796A (en) 1980-05-23 1980-05-23 Turbo compressor

Country Status (2)

Country Link
EP (1) EP0040769A1 (en)
JP (1) JPS56165796A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131599U (en) * 1983-02-23 1984-09-04 三菱重工業株式会社 Fluid machine flow control device
JPS61179397U (en) * 1985-04-30 1986-11-08

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470256A (en) * 1981-12-22 1984-09-11 The Garrett Corporation Fluid compressor
SE504483C2 (en) * 1995-06-26 1997-02-17 Tetra Laval Holdings & Finance Procedure for controlling the vacuum level in a milking plant and milking plant
JP3872966B2 (en) * 2001-06-29 2007-01-24 株式会社日立プラントテクノロジー Axial fluid machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434939A1 (en) * 1978-08-30 1980-03-28 Neu Sa Annular barrier for inlet to centrifugal turbine - permits stable operation at lower outputs than unmodified machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131599U (en) * 1983-02-23 1984-09-04 三菱重工業株式会社 Fluid machine flow control device
JPS61179397U (en) * 1985-04-30 1986-11-08

Also Published As

Publication number Publication date
EP0040769A1 (en) 1981-12-02

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