FR2330859A1 - Cooling fan for car radiator - with fan noise reduced by lining cowl with porous plastics - Google Patents

Cooling fan for car radiator - with fan noise reduced by lining cowl with porous plastics

Info

Publication number
FR2330859A1
FR2330859A1 FR7632267A FR7632267A FR2330859A1 FR 2330859 A1 FR2330859 A1 FR 2330859A1 FR 7632267 A FR7632267 A FR 7632267A FR 7632267 A FR7632267 A FR 7632267A FR 2330859 A1 FR2330859 A1 FR 2330859A1
Authority
FR
France
Prior art keywords
fan
cowl
lining
radiator
noise reduced
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
FR7632267A
Other languages
French (fr)
Other versions
FR2330859B3 (en
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.)
Matec Holding AG
Original Assignee
Matec Holding AG
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 Matec Holding AG filed Critical Matec Holding AG
Publication of FR2330859A1 publication Critical patent/FR2330859A1/en
Application granted granted Critical
Publication of FR2330859B3 publication Critical patent/FR2330859B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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

Abstract

The coiling fan for a car radiator is surrounded by a cowl attached to the radiator. To allow for relative movement between engine and radiator the clearance between the tips of the fan blades and the cowl is relatively large. To reduce noise, the inside of the cowel (14) is lined with a porous plastic material (15) which absorbs the noise generated by the eddies (22) generated by the tips of the blades (19). This lining reduces the level of the fan noise by 5dB to 8dB. The porous lining is provided with a layer of plastic film to prevent the ingress of dirt.
FR7632267A 1975-11-05 1976-10-26 Cooling fan for car radiator - with fan noise reduced by lining cowl with porous plastics Granted FR2330859A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1424975A CH600165A5 (en) 1975-11-05 1975-11-05

Publications (2)

Publication Number Publication Date
FR2330859A1 true FR2330859A1 (en) 1977-06-03
FR2330859B3 FR2330859B3 (en) 1978-11-17

Family

ID=4399249

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7632267A Granted FR2330859A1 (en) 1975-11-05 1976-10-26 Cooling fan for car radiator - with fan noise reduced by lining cowl with porous plastics

Country Status (2)

Country Link
CH (1) CH600165A5 (en)
FR (1) FR2330859A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398508A (en) * 1981-02-20 1983-08-16 Volvo White Truck Corporation Engine cooling fan construction
EP0098397A1 (en) * 1982-07-09 1984-01-18 Iveco Magirus Aktiengesellschaft A fan shroud attached to a water cooler of an internal-combustion engine
FR2532998A1 (en) * 1982-09-14 1984-03-16 Bosch Gmbh Robert Automobile ventilating blower with air flowing over motor
EP3233220A4 (en) * 2013-12-18 2018-07-18 European Sport Imports Limited Stationary wind trainer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3617521A1 (en) * 2018-08-27 2020-03-04 Elektrosil GmbH Housing for an axial fan, axial fan, and method for producing a housing for an axial fan

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398508A (en) * 1981-02-20 1983-08-16 Volvo White Truck Corporation Engine cooling fan construction
EP0098397A1 (en) * 1982-07-09 1984-01-18 Iveco Magirus Aktiengesellschaft A fan shroud attached to a water cooler of an internal-combustion engine
FR2532998A1 (en) * 1982-09-14 1984-03-16 Bosch Gmbh Robert Automobile ventilating blower with air flowing over motor
EP3233220A4 (en) * 2013-12-18 2018-07-18 European Sport Imports Limited Stationary wind trainer

Also Published As

Publication number Publication date
FR2330859B3 (en) 1978-11-17
CH600165A5 (en) 1978-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse