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SE8104956L - SET TO DRIVE AN AXIAL FLOW MACHINE AND MACHINE PERFORMANCE MACHINE - Google Patents

SET TO DRIVE AN AXIAL FLOW MACHINE AND MACHINE PERFORMANCE MACHINE

Info

Publication number
SE8104956L
SE8104956L SE8104956A SE8104956A SE8104956L SE 8104956 L SE8104956 L SE 8104956L SE 8104956 A SE8104956 A SE 8104956A SE 8104956 A SE8104956 A SE 8104956A SE 8104956 L SE8104956 L SE 8104956L
Authority
SE
Sweden
Prior art keywords
rotor
machine
decreasing
energy
downstream
Prior art date
Application number
SE8104956A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE457277B (en
Inventor
G Bodzian
Original Assignee
Gebhardt Gmbh Wilhelm
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 Gebhardt Gmbh Wilhelm filed Critical Gebhardt Gmbh Wilhelm
Publication of SE8104956L publication Critical patent/SE8104956L/en
Publication of SE457277B publication Critical patent/SE457277B/en

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
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/007—Axial-flow pumps multistage fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/024—Multi-stage pumps with contrarotating parts
    • 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
    • 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)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

The machine e.g. a fan, has a cylindrical housing (2) around a rotor (1), and a guide wheel (3) downstream of the rotor (1). Upstream or downstream of the latter there is a further auxiliary rotor (4), co-axial with rotor (1), and having blades of a smaller radial size. In the part of the hub of rotor (1) where flow separation is likely, for decreasing the deflection of the relative flow and for this reason for decreasing the blade grid loading, the supply of energy is decreased in the profile sections in question by decreasing the change in the circumferential velocity component of the absolute flow between the inlet and outlet of rotor (1). The auxiliary rotor (4) supplies further energy in these profile sections for keeping substantially constant the design- dependent energy amount in all blade sections. In a modification boundary layer aspiration is used in the region of potential flow separation. Rings (5,9) may be provided. <IMAGE>
SE8104956A 1980-08-22 1981-08-21 AXIAL FAN WITH STABLE OPERATING COUNTRIES, EVENING AT SMALL VOLUME NUMBERS, RECOVERED BY ALTERNATIVE EXECUTIONS THAT APPLY ENERGY IN THE NAVY AREA SE457277B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803031686 DE3031686A1 (en) 1980-08-22 1980-08-22 METHOD FOR OPERATING AN AXIAL FLOW WORKING MACHINE, AND SUCH A MACHINE FOR CARRYING OUT THIS METHOD

Publications (2)

Publication Number Publication Date
SE8104956L true SE8104956L (en) 1982-02-23
SE457277B SE457277B (en) 1988-12-12

Family

ID=6110180

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8104956A SE457277B (en) 1980-08-22 1981-08-21 AXIAL FAN WITH STABLE OPERATING COUNTRIES, EVENING AT SMALL VOLUME NUMBERS, RECOVERED BY ALTERNATIVE EXECUTIONS THAT APPLY ENERGY IN THE NAVY AREA

Country Status (5)

Country Link
JP (1) JPS5773894A (en)
DE (1) DE3031686A1 (en)
FR (1) FR2488950A1 (en)
GB (1) GB2082688B (en)
SE (1) SE457277B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931640A (en) * 1997-10-17 1999-08-03 Robert Bosch Corporation Oppositely skewed counter-rotating fans
US7815418B2 (en) * 2005-08-03 2010-10-19 Mitsubishi Heavy Industries, Ltd. Shroud and rotary vane wheel of propeller fan and propeller fan
CN103244459B (en) * 2013-04-25 2015-08-05 哈尔滨工业大学 A kind of aerodynamic design method of subsonic adsorption type axial compressor
BE1023233B1 (en) * 2015-07-01 2017-01-05 Safran Aero Boosters S.A. PERFORATED TURBOMACHINE AXIAL COMPRESSOR DRUM
CN110107529A (en) * 2019-05-13 2019-08-09 西华大学 A kind of axial-flow pump impeller and its axial-flow pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE62510C (en) * G. schiele & CO. in Bockenheim bei Frankfurt a. Main Impeller fan with auxiliary wing
DE815374C (en) * 1950-02-25 1951-10-01 Voith Gmbh J M Axial fan with intermediate ring to prevent the flow from jumping around
DE1001113B (en) * 1954-04-17 1957-01-17 Ernst Beck Dr Ing Device for reducing the inlet height required for centrifugal pumps
DE1064191B (en) * 1956-07-26 1959-08-27 Voith Gmbh J M Device for shielding the normal flow against the discharge area in the hub area of axial flow machines
GB1342590A (en) * 1970-07-17 1974-01-03 Secr Defence Suppression of noise in gas turbine engines
DE2204247A1 (en) * 1971-02-12 1972-08-17 Luft U Kaeltetechnik Veb K Boundary layer influencing in turbo machines, in particular for use in air conditioning devices
DE2951775A1 (en) * 1978-12-26 1980-07-03 Nissan Motor COOLING FAN

Also Published As

Publication number Publication date
GB2082688B (en) 1984-10-31
FR2488950A1 (en) 1982-02-26
FR2488950B1 (en) 1985-04-19
DE3031686A1 (en) 1982-04-01
GB2082688A (en) 1982-03-10
DE3031686C2 (en) 1989-08-03
SE457277B (en) 1988-12-12
JPS5773894A (en) 1982-05-08

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