FR2429910A1 - Cooling fan for automobile engine - has pairs of blades which are displaced relative to each other by spring to reduce drive power at high speed - Google Patents

Cooling fan for automobile engine - has pairs of blades which are displaced relative to each other by spring to reduce drive power at high speed

Info

Publication number
FR2429910A1
FR2429910A1 FR7819282A FR7819282A FR2429910A1 FR 2429910 A1 FR2429910 A1 FR 2429910A1 FR 7819282 A FR7819282 A FR 7819282A FR 7819282 A FR7819282 A FR 7819282A FR 2429910 A1 FR2429910 A1 FR 2429910A1
Authority
FR
France
Prior art keywords
blades
pairs
cooling fan
spring
speed
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.)
Granted
Application number
FR7819282A
Other languages
French (fr)
Other versions
FR2429910B1 (en
Inventor
Pierre Loizeau
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.)
Societe Francaise du Ferodo SA
Original Assignee
Societe Francaise du Ferodo SA
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 Societe Francaise du Ferodo SA filed Critical Societe Francaise du Ferodo SA
Priority to FR7819282A priority Critical patent/FR2429910B1/fr
Publication of FR2429910A1 publication Critical patent/FR2429910A1/en
Application granted granted Critical
Publication of FR2429910B1 publication Critical patent/FR2429910B1/fr
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34Blade mountings
    • F04D29/36Blade mountings adjustable
    • F04D29/362Blade mountings adjustable during rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00Pumping cooling-air or liquid coolants
    • F01P5/02Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers

Abstract

The cooling fan of an automobile has eight blades built up in diametrically opposite pairs attached to individual central flanges. One of these flanges is fixed to the shaft (12) with the other three pairs connected to the fixed flange (F1) by pins which engage curved slots. In addition a spiral spring (27) connects the flange (F4) to the shaft. The increasing torque, required by the fan as engine speed increases, deflects the spiral spring, causing the pairs of blades to align themselves one with the other, so that a maximum speed there is only one effective pair of blades, which reduces the power to drive the fan.
FR7819282A 1978-06-28 1978-06-28 Expired FR2429910B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7819282A FR2429910B1 (en) 1978-06-28 1978-06-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7819282A FR2429910B1 (en) 1978-06-28 1978-06-28

Publications (2)

Publication Number Publication Date
FR2429910A1 true FR2429910A1 (en) 1980-01-25
FR2429910B1 FR2429910B1 (en) 1981-12-11

Family

ID=9210083

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819282A Expired FR2429910B1 (en) 1978-06-28 1978-06-28

Country Status (1)

Country Link
FR (1) FR2429910B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693671A (en) * 1986-08-28 1987-09-15 Tramtec Corporation Reversible self-adjusting propeller device
US5066195A (en) * 1987-10-26 1991-11-19 Deutsche Forschungsanstault Fur Luft- Und Raumfahrt e.V. Propeller for aircraft or the like

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE559674C (en) * 1931-03-24 1932-09-23 Aeg Control device for changing the pitch of a propeller, especially for drawing in cooling air for motor vehicles
DE870003C (en) * 1943-03-17 1953-03-09 Voith Gmbh J M Mechanical adjustment device for axial fan
US3054457A (en) * 1958-03-19 1962-09-18 Frank M Mcneill Torque controlled outboard motor propeller
US3406760A (en) * 1967-09-18 1968-10-22 Wallace Murray Corp Flexible blade fan
GB1180595A (en) * 1966-12-07 1970-02-04 Aisin Seiki Fan Assembly of Variable Air Delivery Type

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE559674C (en) * 1931-03-24 1932-09-23 Aeg Control device for changing the pitch of a propeller, especially for drawing in cooling air for motor vehicles
DE870003C (en) * 1943-03-17 1953-03-09 Voith Gmbh J M Mechanical adjustment device for axial fan
US3054457A (en) * 1958-03-19 1962-09-18 Frank M Mcneill Torque controlled outboard motor propeller
GB1180595A (en) * 1966-12-07 1970-02-04 Aisin Seiki Fan Assembly of Variable Air Delivery Type
US3406760A (en) * 1967-09-18 1968-10-22 Wallace Murray Corp Flexible blade fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4693671A (en) * 1986-08-28 1987-09-15 Tramtec Corporation Reversible self-adjusting propeller device
US5066195A (en) * 1987-10-26 1991-11-19 Deutsche Forschungsanstault Fur Luft- Und Raumfahrt e.V. Propeller for aircraft or the like

Also Published As

Publication number Publication date
FR2429910B1 (en) 1981-12-11

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse