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GB1379701A - Engine cooling fans - Google Patents

Engine cooling fans

Info

Publication number
GB1379701A
GB1379701A GB103373A GB103373A GB1379701A GB 1379701 A GB1379701 A GB 1379701A GB 103373 A GB103373 A GB 103373A GB 103373 A GB103373 A GB 103373A GB 1379701 A GB1379701 A GB 1379701A
Authority
GB
United Kingdom
Prior art keywords
edge portion
blade
leading edge
chord line
angle
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
GB103373A
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.)
Aisin Corp
Original Assignee
Aisin Seiki 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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Publication of GB1379701A publication Critical patent/GB1379701A/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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/382—Flexible blades
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction

Landscapes

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

Abstract

1379701 Axial-flow fans AISIN SEIKI KK 8 Jan 1973 [8 Jan 1972] 1033/73 Heading F1C A vehicle engine cooling fan comprises blades 11 extending from a hub 10, the angle α, between the chord line 17 of each blade and the plane of rotation being less than or equal to the angle #, between the chord line 17 and the chord line of a leading edge portion 18 of the blade. The leading edge portion 18 is therefore inclined at a negative or zero angle with respect to the plane of rotation. The hydrodynamic forces exerted on the blade when it drips into flood water are therefore reversed or at least nullified over the leading edge portion 18 whereby deflection of the leading edge portion into contact with the radiator is avoided. To assist in confining deflection of the blade to the trailing edge portion 19, a groove 20 or a shoulder (21), Fig. 7 (not shown) may be provided, preferably on the pressure side of the blade. The length of the chord line of the leading edge portion 18 may be 8% to 30%, preferably 8% to 20%, of the length of the chord line 17.
GB103373A 1972-01-08 1973-01-08 Engine cooling fans Expired GB1379701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47004800A JPS512646B2 (en) 1972-01-08 1972-01-08

Publications (1)

Publication Number Publication Date
GB1379701A true GB1379701A (en) 1975-01-08

Family

ID=11593831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB103373A Expired GB1379701A (en) 1972-01-08 1973-01-08 Engine cooling fans

Country Status (3)

Country Link
US (1) US3822103A (en)
JP (1) JPS512646B2 (en)
GB (1) GB1379701A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203353C3 (en) * 1972-01-25 1978-09-28 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart Fans, in particular for internal combustion engines
DE2522309C3 (en) * 1975-05-20 1979-10-11 Waldemar 4500 Osnabrueck Riepe Liquid pump
JPS53103907U (en) * 1977-01-26 1978-08-22
US4671739A (en) * 1980-07-11 1987-06-09 Robert W. Read One piece molded fan
DE3248760C2 (en) * 1982-12-31 1984-10-31 Siemens AG, 1000 Berlin und 8000 München Axial fan with fan blades that adjust themselves according to the direction of rotation
JPS6247800U (en) * 1985-09-12 1987-03-24
ES2212251T3 (en) * 1998-03-23 2004-07-16 Spal S.R.L. AXIAL FLOW FAN.
EP0945625B1 (en) * 1998-03-23 2004-03-03 SPAL S.r.l. Axial flow fan
US7997870B2 (en) * 2007-08-14 2011-08-16 B N Balance Energy Solutions, Llc Turbine rotor for electrical power generation
GB2484726B (en) * 2010-10-22 2012-11-07 Rolls Royce Plc Blade
US10539157B2 (en) 2015-04-08 2020-01-21 Horton, Inc. Fan blade surface features
EP3957864A1 (en) * 2020-08-17 2022-02-23 Siemens Aktiengesellschaft Fan and dynamoelectric machine with a fan

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798299A (en) * 1926-12-31 1931-03-31 Antoni Ugo Rotary flexible propeller
US3054355A (en) * 1961-04-25 1962-09-18 Lord Mfg Co Pump
US3409968A (en) * 1966-10-03 1968-11-12 Borg Warner Method of making a slotted blade by extruding
US3584969A (en) * 1968-05-25 1971-06-15 Aisin Seiki Flexible blade fan
FR2039765A5 (en) * 1969-03-21 1971-01-15 Aubrey Colin Hill

Also Published As

Publication number Publication date
JPS512646B2 (en) 1976-01-28
US3822103A (en) 1974-07-02
JPS4874607A (en) 1973-10-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930106