JPS57126600A - Centrifugal compressor impeller - Google Patents

Centrifugal compressor impeller

Info

Publication number
JPS57126600A
JPS57126600A JP56010851A JP1085181A JPS57126600A JP S57126600 A JPS57126600 A JP S57126600A JP 56010851 A JP56010851 A JP 56010851A JP 1085181 A JP1085181 A JP 1085181A JP S57126600 A JPS57126600 A JP S57126600A
Authority
JP
Japan
Prior art keywords
back plate
airflow
impeller
detached
static pressure
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
JP56010851A
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 JP56010851A priority Critical patent/JPS57126600A/en
Publication of JPS57126600A publication Critical patent/JPS57126600A/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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • 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
    • 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
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • 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

Landscapes

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

Abstract

PURPOSE:To prevent the boundry layer of airflow from being detached from the wall surface by extending the circumferential edge of impeller back plate from the outer edge of the impeller vane to the direction of vaneless diffuser. CONSTITUTION:The back plate surface 24 is formed by extending the impeller back plate 22 from the outer end 7 of impeller vane 2 to the vaneless portion 23 in radial direction. The airflow, generated from the outer end 7 of impeller vane 2 due to centrifugal force, flows to the radial direction along the back plate surface 24, and decelerated due to the expanded flow passage area. Accordingly, abrupt change in static pressure is alleviated. With the back plate 24 provided as stated above, the airflow is guided along the back plate 24 so that the abrupt change in static pressure is eliminated and formation of airflow boundary layer is supressed. As a result, the boundary layer of airflow is prevented from being detached from the wall surface 25.
JP56010851A 1981-01-29 1981-01-29 Centrifugal compressor impeller Pending JPS57126600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56010851A JPS57126600A (en) 1981-01-29 1981-01-29 Centrifugal compressor impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56010851A JPS57126600A (en) 1981-01-29 1981-01-29 Centrifugal compressor impeller

Publications (1)

Publication Number Publication Date
JPS57126600A true JPS57126600A (en) 1982-08-06

Family

ID=11761850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56010851A Pending JPS57126600A (en) 1981-01-29 1981-01-29 Centrifugal compressor impeller

Country Status (1)

Country Link
JP (1) JPS57126600A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5564898A (en) * 1994-08-03 1996-10-15 Rolls-Royce Plc Gas turbine engine and a diffuser therefor
JP2010255609A (en) * 2009-04-28 2010-11-11 Toyota Motor Corp Centrifugal compressor
CN105156354A (en) * 2015-08-20 2015-12-16 深圳智慧能源技术有限公司 Centrifugal compressor and impeller thereof
WO2017028319A1 (en) * 2015-08-20 2017-02-23 深圳智慧能源技术有限公司 Centrifugal compressor and impeller thereof
US10527059B2 (en) 2013-10-21 2020-01-07 Williams International Co., L.L.C. Turbomachine diffuser
WO2020040774A1 (en) * 2018-08-23 2020-02-27 Dresser-Rand Company Centrifugal compressor and method for directing flow of process fluids in such a centrifugal compressor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5564898A (en) * 1994-08-03 1996-10-15 Rolls-Royce Plc Gas turbine engine and a diffuser therefor
JP2010255609A (en) * 2009-04-28 2010-11-11 Toyota Motor Corp Centrifugal compressor
US10527059B2 (en) 2013-10-21 2020-01-07 Williams International Co., L.L.C. Turbomachine diffuser
CN105156354A (en) * 2015-08-20 2015-12-16 深圳智慧能源技术有限公司 Centrifugal compressor and impeller thereof
WO2017028319A1 (en) * 2015-08-20 2017-02-23 深圳智慧能源技术有限公司 Centrifugal compressor and impeller thereof
WO2020040774A1 (en) * 2018-08-23 2020-02-27 Dresser-Rand Company Centrifugal compressor and method for directing flow of process fluids in such a centrifugal compressor

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