JPS54133613A - Diffuser for centrifugal fluid machine - Google Patents

Diffuser for centrifugal fluid machine

Info

Publication number
JPS54133613A
JPS54133613A JP4032178A JP4032178A JPS54133613A JP S54133613 A JPS54133613 A JP S54133613A JP 4032178 A JP4032178 A JP 4032178A JP 4032178 A JP4032178 A JP 4032178A JP S54133613 A JPS54133613 A JP S54133613A
Authority
JP
Japan
Prior art keywords
diffuser
inlet
stall
separation
outlet
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
JP4032178A
Other languages
Japanese (ja)
Other versions
JPS5947159B2 (en
Inventor
Yoichi Yoshinaga
Fumio Koseki
Haruo Miura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53040321A priority Critical patent/JPS5947159B2/en
Publication of JPS54133613A publication Critical patent/JPS54133613A/en
Publication of JPS5947159B2 publication Critical patent/JPS5947159B2/en
Expired 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
    • 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
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
    • 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
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0238—Details or means for fluid reinjection
    • 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
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • 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
    • F05D2250/52—Outlet

Abstract

PURPOSE: To make possible control over phenomena such as separation and stall by making uniform the velocity distribution at the difuser's inlet by such a construction that high-pressure fluid at the diffuser's outlet is to be jetted out through an adjustable slit provided at the diffuser's inlet.
CONSTITUTION: The fluid whose pressure energy is raised up by the diffuser, flows out from the discharge opening upon being gathered at a scroll 5. At the rear of the diffuser's base plate 7, a baffle plate 7' is equipped with a necessary spacing, which forms a back flow line 8. On the inside surface of the diffuser's base plate 7, a ring-shaped nozzle 10 is equipped while a slit 15 is provided at its outlet. A backward guide vane 16 is provided in the back stream line 8 to give, at the diffuser's inlet, the jet stream a swirl in the same direction at the guide vane 4, accelerate low-speed fluid and make uniform the velocity distribution at the diffuser's inlet. Thus phenomena such as separation and stall can be controlled.
COPYRIGHT: (C)1979,JPO&Japio
JP53040321A 1978-04-07 1978-04-07 centrifugal compressor diffuser Expired JPS5947159B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53040321A JPS5947159B2 (en) 1978-04-07 1978-04-07 centrifugal compressor diffuser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53040321A JPS5947159B2 (en) 1978-04-07 1978-04-07 centrifugal compressor diffuser

Publications (2)

Publication Number Publication Date
JPS54133613A true JPS54133613A (en) 1979-10-17
JPS5947159B2 JPS5947159B2 (en) 1984-11-16

Family

ID=12577338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53040321A Expired JPS5947159B2 (en) 1978-04-07 1978-04-07 centrifugal compressor diffuser

Country Status (1)

Country Link
JP (1) JPS5947159B2 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403914A (en) * 1981-07-13 1983-09-13 Teledyne Industries, Inc. Variable geometry device for turbomachinery
JPS60112699U (en) * 1984-01-09 1985-07-30 日産自動車株式会社 centrifugal compressor
WO1986003809A1 (en) * 1984-12-24 1986-07-03 Sundstrand Corporation Adjustable centrifugal pump
US4877369A (en) * 1988-02-08 1989-10-31 Dresser-Rand Company Vaned diffuser control
US4969798A (en) * 1988-02-26 1990-11-13 Hitachi, Ltd. Diffuser for a centrifugal compressor
US5059091A (en) * 1989-07-21 1991-10-22 Rolls-Royce Plc Gas turbine engine compressor assembly
JP2006152972A (en) * 2004-12-01 2006-06-15 Toyota Industries Corp Centrifugal compressor
US7326027B1 (en) * 2004-05-25 2008-02-05 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Devices and methods of operation thereof for providing stable flow for centrifugal compressors
JP2010065669A (en) * 2008-09-12 2010-03-25 Mitsubishi Heavy Ind Ltd Centrifugal compressor
US7722316B2 (en) * 2005-09-13 2010-05-25 Rolls-Royce Power Engineering Plc Acoustic viscous damper for centrifugal gas compressor
JP2014513778A (en) * 2011-05-16 2014-06-05 ターボメカ Gas turbine diffuser blowing method and corresponding diffuser
WO2019060751A1 (en) * 2017-09-25 2019-03-28 Johnson Controls Technology Company Compact variable geometry diffuser mechanism
EP4273408A1 (en) * 2022-05-06 2023-11-08 Ingersoll-Rand Industrial U.S., Inc. Centrifugal acceleration stabilizer

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403914A (en) * 1981-07-13 1983-09-13 Teledyne Industries, Inc. Variable geometry device for turbomachinery
JPS60112699U (en) * 1984-01-09 1985-07-30 日産自動車株式会社 centrifugal compressor
WO1986003809A1 (en) * 1984-12-24 1986-07-03 Sundstrand Corporation Adjustable centrifugal pump
GB2180003A (en) * 1984-12-24 1987-03-18 Sundstrand Corp Adjustable centrifugal pump
US4877369A (en) * 1988-02-08 1989-10-31 Dresser-Rand Company Vaned diffuser control
US4969798A (en) * 1988-02-26 1990-11-13 Hitachi, Ltd. Diffuser for a centrifugal compressor
US5059091A (en) * 1989-07-21 1991-10-22 Rolls-Royce Plc Gas turbine engine compressor assembly
US7326027B1 (en) * 2004-05-25 2008-02-05 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Devices and methods of operation thereof for providing stable flow for centrifugal compressors
JP2006152972A (en) * 2004-12-01 2006-06-15 Toyota Industries Corp Centrifugal compressor
JP4655603B2 (en) * 2004-12-01 2011-03-23 株式会社豊田自動織機 Centrifugal compressor
US7722316B2 (en) * 2005-09-13 2010-05-25 Rolls-Royce Power Engineering Plc Acoustic viscous damper for centrifugal gas compressor
JP2010065669A (en) * 2008-09-12 2010-03-25 Mitsubishi Heavy Ind Ltd Centrifugal compressor
JP2014513778A (en) * 2011-05-16 2014-06-05 ターボメカ Gas turbine diffuser blowing method and corresponding diffuser
US9618008B2 (en) 2011-05-16 2017-04-11 Turbomeca Gas turbine diffuser blowing method and corresponding diffuser
WO2019060751A1 (en) * 2017-09-25 2019-03-28 Johnson Controls Technology Company Compact variable geometry diffuser mechanism
CN111373155A (en) * 2017-09-25 2020-07-03 江森自控科技公司 Compact variable geometry diffuser mechanism
US11421699B2 (en) 2017-09-25 2022-08-23 Johnson Controls Tyco IP Holdings LLP Compact variable geometry diffuser mechanism
CN111373155B (en) * 2017-09-25 2022-09-02 江森自控科技公司 Compact variable geometry diffuser mechanism
TWI782097B (en) * 2017-09-25 2022-11-01 美商江森自控技術公司 Diffuser system for a centrifugal compressor and system for a variable capacity centrifugal compressor for compressing a fluid
EP4273408A1 (en) * 2022-05-06 2023-11-08 Ingersoll-Rand Industrial U.S., Inc. Centrifugal acceleration stabilizer

Also Published As

Publication number Publication date
JPS5947159B2 (en) 1984-11-16

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