GB1085565A - Mixed flow fans - Google Patents

Mixed flow fans

Info

Publication number
GB1085565A
GB1085565A GB25699/63A GB2569963A GB1085565A GB 1085565 A GB1085565 A GB 1085565A GB 25699/63 A GB25699/63 A GB 25699/63A GB 2569963 A GB2569963 A GB 2569963A GB 1085565 A GB1085565 A GB 1085565A
Authority
GB
United Kingdom
Prior art keywords
centrifugal
main flow
impeller
fan
helico
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
GB25699/63A
Inventor
Brian Bowman Daly
Alec Gerard James Baker
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.)
Woods of Colchester Ltd
Original Assignee
Woods of Colchester 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 Woods of Colchester Ltd filed Critical Woods of Colchester Ltd
Priority to GB25699/63A priority Critical patent/GB1085565A/en
Publication of GB1085565A publication Critical patent/GB1085565A/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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,085,565. Electric motors. WOODS OF COLCHESTER Ltd. June 25, 1964 [June 27, 1963], No. 25699/63. Heading H2A. [Also in Divisions F1 and F2] A helico-centrifugal fan has a secondary centrifugal impeller within the inner diameter of the main impeller to provide a secondary gas current. In the fan shown, comprising an impeller disc 15 carrying helico-centrifugal blades 16 and a shroud 19, centrifugal blades 23 carried by the disc 15 provide an auxiliary circulation as shown by arrows 20, whereby gas is drawn at 21 from the main flow 17 and flows through an annular space 22 or channels in the motor housing to cool the driving motor 11, returning to the main flow at 24. Cooling fins may be provided on the motor carcase. The auxiliary circulation re-energizes the boundary layer adjacent the inner wall 25 of the main flow duct to prevent it from thickening and slowing down. Fan noise may be reduced by perforating the inner and outer walls 25, 26 and providing sound-damping material such as slag wool or glass fibre within chambers 27, 28.
GB25699/63A 1963-06-27 1963-06-27 Mixed flow fans Expired GB1085565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB25699/63A GB1085565A (en) 1963-06-27 1963-06-27 Mixed flow fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25699/63A GB1085565A (en) 1963-06-27 1963-06-27 Mixed flow fans

Publications (1)

Publication Number Publication Date
GB1085565A true GB1085565A (en) 1967-10-04

Family

ID=39970969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25699/63A Expired GB1085565A (en) 1963-06-27 1963-06-27 Mixed flow fans

Country Status (1)

Country Link
GB (1) GB1085565A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873471U (en) * 1971-12-13 1973-09-13
US4909711A (en) * 1978-02-15 1990-03-20 Papst-Motoren Gmbh & Co. Kg Small fan with electric drive motor
WO1991001450A1 (en) * 1989-07-19 1991-02-07 Keller Lufttechnik Gmbh + Co. Kg Radial-flow fan unit fitted inside an air-intake duct
EP0598684A1 (en) * 1992-10-16 1994-05-25 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Electric fan
EP0651161A1 (en) * 1993-11-02 1995-05-03 Aktiebolaget Electrolux Device for cooling en electric motor for a turbo-fan
US5695318A (en) * 1991-08-15 1997-12-09 Papst-Motoren Gmbh & Co Kg Diagonal fan
EP2226509A3 (en) * 2003-11-26 2011-06-08 Rolls-Royce Deutschland Ltd & Co KG Turbo compressor or pump with fluid injection to influence the boundary layer
EP2461043A4 (en) * 2009-07-29 2016-05-11 Soler & Palau Res S L U Sound-proofed helicocentrifugal fan
CN107806449A (en) * 2017-10-23 2018-03-16 胡永江 A kind of noise reduction slag acoustic wave filter structure
EP3376043A1 (en) * 2017-03-16 2018-09-19 LG Electronics Inc. Motor fan
EP3418582A1 (en) * 2012-05-16 2018-12-26 Dyson Technology Limited Fan comprising perforated sound-absorbing chamber
US10428837B2 (en) 2012-05-16 2019-10-01 Dyson Technology Limited Fan
WO2022022880A1 (en) * 2020-07-28 2022-02-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Tubular fan in the form of a centrifugal fan

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4873471U (en) * 1971-12-13 1973-09-13
US4909711A (en) * 1978-02-15 1990-03-20 Papst-Motoren Gmbh & Co. Kg Small fan with electric drive motor
WO1991001450A1 (en) * 1989-07-19 1991-02-07 Keller Lufttechnik Gmbh + Co. Kg Radial-flow fan unit fitted inside an air-intake duct
US5695318A (en) * 1991-08-15 1997-12-09 Papst-Motoren Gmbh & Co Kg Diagonal fan
EP0598684A1 (en) * 1992-10-16 1994-05-25 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Electric fan
EP0651161A1 (en) * 1993-11-02 1995-05-03 Aktiebolaget Electrolux Device for cooling en electric motor for a turbo-fan
EP2226509A3 (en) * 2003-11-26 2011-06-08 Rolls-Royce Deutschland Ltd & Co KG Turbo compressor or pump with fluid injection to influence the boundary layer
EP3477119A1 (en) * 2009-07-29 2019-05-01 Soler & Palau Research, S.L.U. Sound-proofed helicocentrifugal fan
EP2461043A4 (en) * 2009-07-29 2016-05-11 Soler & Palau Res S L U Sound-proofed helicocentrifugal fan
US10428837B2 (en) 2012-05-16 2019-10-01 Dyson Technology Limited Fan
US10309420B2 (en) 2012-05-16 2019-06-04 Dyson Technology Limited Fan
EP3418582A1 (en) * 2012-05-16 2018-12-26 Dyson Technology Limited Fan comprising perforated sound-absorbing chamber
US20180266426A1 (en) * 2017-03-16 2018-09-20 Lg Electronics Inc. Fan motor
EP3376043A1 (en) * 2017-03-16 2018-09-19 LG Electronics Inc. Motor fan
EP3795840A1 (en) * 2017-03-16 2021-03-24 LG Electronics Inc. Motor fan
US11085454B2 (en) * 2017-03-16 2021-08-10 Lg Electronics Inc. Fan motor having a motor mount defining a cooling flow path inlet and a diffuser body defining a cooling flow path outlet with the cooling flow path in fluid communication with the inner space of the motor mount
US20210317836A1 (en) * 2017-03-16 2021-10-14 Lg Electronics Inc. Fan motor
US11686314B2 (en) * 2017-03-16 2023-06-27 Lg Electronics Inc. Fan motor
EP4234949A3 (en) * 2017-03-16 2023-10-04 LG Electronics Inc. Motor fan
CN107806449A (en) * 2017-10-23 2018-03-16 胡永江 A kind of noise reduction slag acoustic wave filter structure
WO2022022880A1 (en) * 2020-07-28 2022-02-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Tubular fan in the form of a centrifugal fan

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