GB696007A - Improvements in and relating to diffuser for the conversion of kinetic energy into pressure energy and axial-flow engine provided with such a diffuser - Google Patents

Improvements in and relating to diffuser for the conversion of kinetic energy into pressure energy and axial-flow engine provided with such a diffuser

Info

Publication number
GB696007A
GB696007A GB18153/51A GB1815351A GB696007A GB 696007 A GB696007 A GB 696007A GB 18153/51 A GB18153/51 A GB 18153/51A GB 1815351 A GB1815351 A GB 1815351A GB 696007 A GB696007 A GB 696007A
Authority
GB
United Kingdom
Prior art keywords
diffuser
wall
blades
axial
flow
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.)
Expired
Application number
GB18153/51A
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.)
Burmeister and Wains Motorog Maskinfabrik AS
Original Assignee
Burmeister and Wains Motorog Maskinfabrik AS
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 Burmeister and Wains Motorog Maskinfabrik AS filed Critical Burmeister and Wains Motorog Maskinfabrik AS
Publication of GB696007A publication Critical patent/GB696007A/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
    • F04D29/40—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
    • F04D29/442—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps rotating diffusers
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • 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

Landscapes

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

Abstract

696,007. Axial-flow compressors, pumps and turbines. AKTIESELSKABET BURMEISTER & WAIN'S MASKIN-OG SKIBSBYGGERI. July 31, 1951 [Sept. 2, 1950], No. 18153/51. Classes 110(i) and 110(iii) A diffuser for an axially flowing medium in a turbine, compressor or pump comprises diffusion channels carried by a freely rotating wheel 9. The wheel 9 is joumaled at 18 on the shaft 16 of the working rotor 6 and carries thin laminar blades 8. It may run in the opposite direction to the rotor 6. The boundary layer may be removed by suction at the places where the interaction between the main flow and the boundary layer is least, as by providing communication between the diffuser wall and the annular passage 15 by way of holes 12 and a clearance 14. Further holes or slots for this purpose may be formed in the blades 8 or in the outer wall of the diffuser. This outer wall may, as shown, be part of the casing wall 10 or may comprise a shroud rotating with the blades 8. The flow may depart from the axial direction at the inlet and outlet of the diffuser. There may be several successive rotary diffusers running, it may be, at different speeds and in different directions.
GB18153/51A 1950-09-02 1951-07-31 Improvements in and relating to diffuser for the conversion of kinetic energy into pressure energy and axial-flow engine provided with such a diffuser Expired GB696007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK696007X 1950-09-02

Publications (1)

Publication Number Publication Date
GB696007A true GB696007A (en) 1953-08-19

Family

ID=8152311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18153/51A Expired GB696007A (en) 1950-09-02 1951-07-31 Improvements in and relating to diffuser for the conversion of kinetic energy into pressure energy and axial-flow engine provided with such a diffuser

Country Status (1)

Country Link
GB (1) GB696007A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719428A (en) * 1969-03-14 1973-03-06 W Dettmering Jet engine for hypersonic intake velocities
US5437539A (en) * 1992-07-22 1995-08-01 Massachusetts Institute Of Technology Apparatus for the dynamic control of rotating stall and surge in turbo machines and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719428A (en) * 1969-03-14 1973-03-06 W Dettmering Jet engine for hypersonic intake velocities
US5437539A (en) * 1992-07-22 1995-08-01 Massachusetts Institute Of Technology Apparatus for the dynamic control of rotating stall and surge in turbo machines and the like

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