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IT1271651B - UNCHANGED SHOVEL FOR AXIAL FAN - Google Patents

UNCHANGED SHOVEL FOR AXIAL FAN

Info

Publication number
IT1271651B
IT1271651B ITMI941334A ITMI941334A IT1271651B IT 1271651 B IT1271651 B IT 1271651B IT MI941334 A ITMI941334 A IT MI941334A IT MI941334 A ITMI941334 A IT MI941334A IT 1271651 B IT1271651 B IT 1271651B
Authority
IT
Italy
Prior art keywords
blade
axial fan
shovel
unchanged
flap
Prior art date
Application number
ITMI941334A
Other languages
Italian (it)
Inventor
Roberto Mosiewicz
Original Assignee
Cofimco Srl
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 Cofimco Srl filed Critical Cofimco Srl
Priority to ITMI941334A priority Critical patent/IT1271651B/en
Publication of ITMI941334A0 publication Critical patent/ITMI941334A0/en
Priority to EP95108151A priority patent/EP0690236A1/en
Publication of ITMI941334A1 publication Critical patent/ITMI941334A1/en
Application granted granted Critical
Publication of IT1271651B publication Critical patent/IT1271651B/en

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
    • F04D29/384—Blades characterised by form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301—Cross-section characteristics

Landscapes

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

Abstract

Viene descritta una pala non svergolata 1 per ventilatore assiale, presentante lungo il bordo d'uscita un'aletta 3 inclinata rispetto al corpo 2 della pala 1, in cui l'aletta 3 è raccordata con continuità al corpo 2 della pala 1 e presenta una larghezza 5 maggiore di quella dell'aletta di una pala di tipo noto.Tale nuova pala risulta meno rumorosa ed presenta prestazioni migliori rispetto alle pale di tipo noto.A non-twisted blade 1 for axial fan is described, having along the trailing edge a flap 3 inclined with respect to the body 2 of the blade 1, in which the flap 3 is connected continuously to the body 2 of the blade 1 and has a width 5 greater than that of the blade of a blade of a known type. This new blade is less noisy and has better performance than blades of the known type.

ITMI941334A 1994-06-27 1994-06-27 UNCHANGED SHOVEL FOR AXIAL FAN IT1271651B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITMI941334A IT1271651B (en) 1994-06-27 1994-06-27 UNCHANGED SHOVEL FOR AXIAL FAN
EP95108151A EP0690236A1 (en) 1994-06-27 1995-05-29 Untwisted blade for axial-flow fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941334A IT1271651B (en) 1994-06-27 1994-06-27 UNCHANGED SHOVEL FOR AXIAL FAN

Publications (3)

Publication Number Publication Date
ITMI941334A0 ITMI941334A0 (en) 1994-06-27
ITMI941334A1 ITMI941334A1 (en) 1995-12-27
IT1271651B true IT1271651B (en) 1997-06-04

Family

ID=11369171

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI941334A IT1271651B (en) 1994-06-27 1994-06-27 UNCHANGED SHOVEL FOR AXIAL FAN

Country Status (2)

Country Link
EP (1) EP0690236A1 (en)
IT (1) IT1271651B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2898943B1 (en) 2006-03-23 2012-08-31 Valeo Systemes Thermiques FAN PROPELLER, ESPECIALLY FOR AUTOMOTIVE VEHICLES
CN101666329B (en) * 2009-09-17 2012-02-01 上海交通大学 Combined airfoil axial flow fan blade

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1205472A (en) * 1957-04-16 1960-02-03 Improvements in paddlewheels, propellers and the like to produce axial effects, more particularly axial air flow
GB909544A (en) * 1960-06-24 1962-10-31 Ottis David Twist Fan
DE2112261A1 (en) * 1971-03-13 1972-09-14 Battelle Institut E V Cooling fan
US3825369A (en) * 1972-09-13 1974-07-23 Hayes Albion Corp Lightweight fan
US4618313A (en) 1980-02-06 1986-10-21 Cofimco S.R.L. Axial propeller with increased effective displacement of air whose blades are not twisted
US4892460A (en) * 1989-01-30 1990-01-09 Volk Steve J Propeller breeze enhancing blades for conventional ceiling fans
GB2246398A (en) * 1990-07-26 1992-01-29 Howden Wind Turbines Limited Wind turbine blade and rotor incorporating same

Also Published As

Publication number Publication date
EP0690236A1 (en) 1996-01-03
ITMI941334A0 (en) 1994-06-27
ITMI941334A1 (en) 1995-12-27

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970627