EP0294688A1 - Axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles - Google Patents

Axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles Download PDF

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Publication number
EP0294688A1
EP0294688A1 EP88108676A EP88108676A EP0294688A1 EP 0294688 A1 EP0294688 A1 EP 0294688A1 EP 88108676 A EP88108676 A EP 88108676A EP 88108676 A EP88108676 A EP 88108676A EP 0294688 A1 EP0294688 A1 EP 0294688A1
Authority
EP
European Patent Office
Prior art keywords
cooling
radiator
axial fan
internal combustion
motor vehicles
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.)
Withdrawn
Application number
EP88108676A
Other languages
German (de)
French (fr)
Inventor
Lorella Annovazzi
Flavio Gianluigi Maggi
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.)
Industrie Magneti Marelli SRL
Marelli Europe SpA
Original Assignee
Industrie Magneti Marelli SRL
Magneti Marelli SpA
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 Industrie Magneti Marelli SRL, Magneti Marelli SpA filed Critical Industrie Magneti Marelli SRL
Publication of EP0294688A1 publication Critical patent/EP0294688A1/en
Withdrawn legal-status Critical Current

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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
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed blades

Definitions

  • the present invention relates in general to axial fans intended to be used for cooling the radiator of the cooling system of internal combustion engines for motor vehicles.
  • the invention concerns an axial fan rotor of the type comprising a hub carrying a ring of radial blades.
  • the object of the present invention is to produce an axial fan rotor of the above-specified type, having a conformation which provides better performance in terms of efficiency and quietness of operation.
  • each blade is generally sabre-shaped with a pronouced backward curvature and an arcuate leading edge like the head of a torpedo.
  • an axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles is generally indicated 1.
  • the rotor l which is conveniently formed from a single piece of moulded plastics material, comprises a central hub 2 from which extends a plurality of radial blades 3 having generally curved profiles, as illustrated in detail in Figure 3.
  • each blade 3 is generally sabre-shaped with a pronounced backward curvature and with an arcuate leading edge 3a and an arcuate trailing edge 3b.
  • the curvature of the leading edges 3a is such as to give the rotor 1 an overall shape which is similar to that of a torpedo head.
  • the rotor according to the invention enables better efficiency and quieter operation to be achieved in use.

Abstract

An axial fan rotor (1) for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles, including a hub (2) carrying a ring of radial blades (3), each of which is generally sabre-shaped with a pronouced backward curvature and an arcuate leading edge (3a) like the head of a torpedo.

Description

  • The present invention relates in general to axial fans intended to be used for cooling the radiator of the cooling system of internal combustion engines for motor vehicles.
  • More particularly, the invention concerns an axial fan rotor of the type comprising a hub carrying a ring of radial blades.
  • The object of the present invention is to produce an axial fan rotor of the above-specified type, having a conformation which provides better performance in terms of efficiency and quietness of operation.
  • According to the invention, this object is achieved by virtue of the fact that each blade is generally sabre-shaped with a pronouced backward curvature and an arcuate leading edge like the head of a torpedo.
  • The invention will now be described in detail with reference to the appended drawings, in which:
    • Figure 1 is a schematic perspective view of an axial fan rotor according to the invention,
    • Figure 2 is a side elevation taken on the arrow II of Figure 1, and
    • Figure 3 is a partial front elevational view taken on the arrow III of Figure 2.
  • With reference to the drawings, an axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles is generally indicated 1.
  • The rotor l, which is conveniently formed from a single piece of moulded plastics material, comprises a central hub 2 from which extends a plurality of radial blades 3 having generally curved profiles, as illustrated in detail in Figure 3.
  • According to the invention, each blade 3 is generally sabre-shaped with a pronounced backward curvature and with an arcuate leading edge 3a and an arcuate trailing edge 3b. In particular, the curvature of the leading edges 3a is such as to give the rotor 1 an overall shape which is similar to that of a torpedo head.
  • By virtue of the above-described conformation, the rotor according to the invention enables better efficiency and quieter operation to be achieved in use.

Claims (1)

  1. An axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles, including a hub carrying a ring of radial blades, characterised in that each blade (3) is generally sabre-shaped with a pronouced backward curvature and an arcuate leading edge (3a) substantially like the head of a torpedo.
EP88108676A 1987-06-03 1988-05-31 Axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles Withdrawn EP0294688A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5337187U 1987-06-03
IT5337187U IT210734Z2 (en) 1987-06-03 1987-06-03 AXIAL FAN IMPELLER FOR COOLING THE RADIATOR OF THE REFRIGERATION CIRCUIT OF AN INTERNAL COMBUSTION ENGINE FOR MOTOR VEHICLES

Publications (1)

Publication Number Publication Date
EP0294688A1 true EP0294688A1 (en) 1988-12-14

Family

ID=11282215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108676A Withdrawn EP0294688A1 (en) 1987-06-03 1988-05-31 Axial fan rotor for cooling the radiator of the cooling system of an internal combustion engine for motor vehicles

Country Status (2)

Country Link
EP (1) EP0294688A1 (en)
IT (1) IT210734Z2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298861B1 (en) * 1987-07-09 1991-05-15 Ecia - Equipements Et Composants Pour L'industrie Automobile Scythe-shaped impeller blade, and its use, especially in motor vehicle ventilators
US5320493A (en) * 1992-12-16 1994-06-14 Industrial Technology Research Institute Ultra-thin low noise axial flow fan for office automation machines

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1352848A (en) * 1917-10-30 1920-09-14 Stanyo Desider Fan-wheel
GB459206A (en) * 1936-06-05 1937-01-04 Hartzell Industries Improvements in or relating to rotatable air ventilating screw propellers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1352848A (en) * 1917-10-30 1920-09-14 Stanyo Desider Fan-wheel
GB459206A (en) * 1936-06-05 1937-01-04 Hartzell Industries Improvements in or relating to rotatable air ventilating screw propellers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298861B1 (en) * 1987-07-09 1991-05-15 Ecia - Equipements Et Composants Pour L'industrie Automobile Scythe-shaped impeller blade, and its use, especially in motor vehicle ventilators
US5320493A (en) * 1992-12-16 1994-06-14 Industrial Technology Research Institute Ultra-thin low noise axial flow fan for office automation machines

Also Published As

Publication number Publication date
IT8753371V0 (en) 1987-06-03
IT210734Z2 (en) 1989-01-11

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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