GB754055A - Improvements in or relating to centrifugal fan wheels - Google Patents

Improvements in or relating to centrifugal fan wheels

Info

Publication number
GB754055A
GB754055A GB22448/54A GB2244854A GB754055A GB 754055 A GB754055 A GB 754055A GB 22448/54 A GB22448/54 A GB 22448/54A GB 2244854 A GB2244854 A GB 2244854A GB 754055 A GB754055 A GB 754055A
Authority
GB
United Kingdom
Prior art keywords
blade
trailing edge
gas
slots
plate
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
GB22448/54A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB754055A publication Critical patent/GB754055A/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
    • F04D29/682—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
    • 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
    • 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
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F04D29/30—Vanes

Landscapes

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

Abstract

754,055. Centrifugal fans. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Aug. 3, 1954 [Aug. 5, 1953], No. 22448/54. Class 110(1) [Also in Group XXXIII] A centrifugal fan wheel comprises a back plate, a side plate, a plurality of curved aerofoil blades secured between said plates and means for preventing boundary layer flow separation at very high and very low gas volumes comprising openings in the inner and outer sides of the blades through which gas can move as a result of the rotation of the fan wheel. The wheel has a curved side plate 20 and a back plate 21 connected to a hub 22 with curved blades 23 attached at their ends as by welding or riveting to the back and side plates. Each blade has slots 24 extending therethrough from points in the outer side of the blade to respective points nearer the trailing edge of the blade in the inner side. the difference in pressure on the two sides causing the gas to flow into the slots at the outer side and out at the inner side to draw away and sweep turbulent flow from the respective sides. In another embodiment the inclination of the slots-through each blade is opposite to that shown in Fig. 2 and in further embodiments each blade is hollow and both surfaces are perforated and an aperture is provided in the plate 21 within the profile, and adjacent the trailing edge, of each blade or in the trailing edge of the blade itself whereby gas is drawn into the interior of the blade and exhausted at the trailing edge.
GB22448/54A 1953-08-05 1954-08-03 Improvements in or relating to centrifugal fan wheels Expired GB754055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US754055XA 1953-08-05 1953-08-05

Publications (1)

Publication Number Publication Date
GB754055A true GB754055A (en) 1956-08-01

Family

ID=22125513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22448/54A Expired GB754055A (en) 1953-08-05 1954-08-03 Improvements in or relating to centrifugal fan wheels

Country Status (1)

Country Link
GB (1) GB754055A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962258A (en) * 1958-03-31 1960-11-29 Marquardt Corp Slotted vane turbine governor
US2975962A (en) * 1957-05-10 1961-03-21 Konink Maschf Gebr Stork & Co Impellers for centrifugal fans
US3037459A (en) * 1958-09-17 1962-06-05 American Radiator & Standard Balanced pressure rotor vane
US3070287A (en) * 1959-07-16 1962-12-25 Eck Bruno Drum rotor for radial blower
US3319593A (en) * 1962-12-24 1967-05-16 Papst Hermann Boundary layer control
US3346235A (en) * 1963-12-23 1967-10-10 Papst Hermann Boundary layer control
US3388671A (en) * 1965-07-15 1968-06-18 Cities Service Res & Dev Co Centrifugal pump
US3414188A (en) * 1966-11-25 1968-12-03 American Radiator & Standard Fan having hollow blades
US4714408A (en) * 1985-06-06 1987-12-22 Nissan Motor Co., Ltd. Radiator fan
DE4214753A1 (en) * 1992-05-04 1993-11-11 Asea Brown Boveri Radial compressor impeller with axially spaced shroud disc - has series of holes across blade ends to give stable flow under part load conditions
US5343826A (en) * 1991-08-19 1994-09-06 Clark-Reliance Corporation Fluid indicator assemblies for sight flow apparatus
US5664944A (en) * 1994-12-05 1997-09-09 The Babcock & Wilcox Company Low pressure drop vanes for burners and NOX ports
US5755567A (en) * 1996-02-21 1998-05-26 The Babcock & Wilcox Company Low vortex spin vanes for burners and overfire air ports
US6007300A (en) * 1996-05-17 1999-12-28 Calsonic Corporation Centrifugal multiblade fan
EP0975516A1 (en) * 1997-04-14 2000-02-02 Chi Keung Leung Improved fluid displacing blade
US6802693B2 (en) * 1999-05-21 2004-10-12 Vortex Holding Company Vortex attractor with vanes attached to containing ring and backplate
CN106151111A (en) * 2016-08-08 2016-11-23 常州大学 A kind of train low noise cooling blower
CN109058157A (en) * 2018-08-16 2018-12-21 泛仕达机电股份有限公司 A kind of centrifugal impeller and its hollow blade
EP3736449A4 (en) * 2018-02-02 2021-01-13 Huawei Technologies Co., Ltd. Fan and mobile terminal

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975962A (en) * 1957-05-10 1961-03-21 Konink Maschf Gebr Stork & Co Impellers for centrifugal fans
US2962258A (en) * 1958-03-31 1960-11-29 Marquardt Corp Slotted vane turbine governor
US3037459A (en) * 1958-09-17 1962-06-05 American Radiator & Standard Balanced pressure rotor vane
US3070287A (en) * 1959-07-16 1962-12-25 Eck Bruno Drum rotor for radial blower
US3319593A (en) * 1962-12-24 1967-05-16 Papst Hermann Boundary layer control
US3346235A (en) * 1963-12-23 1967-10-10 Papst Hermann Boundary layer control
US3388671A (en) * 1965-07-15 1968-06-18 Cities Service Res & Dev Co Centrifugal pump
US3414188A (en) * 1966-11-25 1968-12-03 American Radiator & Standard Fan having hollow blades
US4714408A (en) * 1985-06-06 1987-12-22 Nissan Motor Co., Ltd. Radiator fan
US5343826A (en) * 1991-08-19 1994-09-06 Clark-Reliance Corporation Fluid indicator assemblies for sight flow apparatus
DE4214753A1 (en) * 1992-05-04 1993-11-11 Asea Brown Boveri Radial compressor impeller with axially spaced shroud disc - has series of holes across blade ends to give stable flow under part load conditions
US5664944A (en) * 1994-12-05 1997-09-09 The Babcock & Wilcox Company Low pressure drop vanes for burners and NOX ports
US5755567A (en) * 1996-02-21 1998-05-26 The Babcock & Wilcox Company Low vortex spin vanes for burners and overfire air ports
US6007300A (en) * 1996-05-17 1999-12-28 Calsonic Corporation Centrifugal multiblade fan
EP0975516A1 (en) * 1997-04-14 2000-02-02 Chi Keung Leung Improved fluid displacing blade
EP0975516A4 (en) * 1997-04-14 2002-06-12 Chi Keung Leung Improved fluid displacing blade
US6802693B2 (en) * 1999-05-21 2004-10-12 Vortex Holding Company Vortex attractor with vanes attached to containing ring and backplate
CN106151111A (en) * 2016-08-08 2016-11-23 常州大学 A kind of train low noise cooling blower
EP3736449A4 (en) * 2018-02-02 2021-01-13 Huawei Technologies Co., Ltd. Fan and mobile terminal
CN109058157A (en) * 2018-08-16 2018-12-21 泛仕达机电股份有限公司 A kind of centrifugal impeller and its hollow blade

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