EP1857683A3 - Centrifugal fan, particularly for extractor hoods and fume extractors - Google Patents

Centrifugal fan, particularly for extractor hoods and fume extractors Download PDF

Info

Publication number
EP1857683A3
EP1857683A3 EP07107751A EP07107751A EP1857683A3 EP 1857683 A3 EP1857683 A3 EP 1857683A3 EP 07107751 A EP07107751 A EP 07107751A EP 07107751 A EP07107751 A EP 07107751A EP 1857683 A3 EP1857683 A3 EP 1857683A3
Authority
EP
European Patent Office
Prior art keywords
casing
fan wheel
axis
fan
centrifugal fan
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Withdrawn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
EP07107751A
Other languages
German (de)
French (fr)
Other versions
EP1857683A2 (en
Inventor
Antonio Ranalli
Francesco Tanoni
Gabriele Teobaldelli
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.)
LN 2 - Srl
Original Assignee
LN 2 - 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 LN 2 - Srl filed Critical LN 2 - Srl
Publication of EP1857683A2 publication Critical patent/EP1857683A2/en
Publication of EP1857683A3 publication Critical patent/EP1857683A3/en
Withdrawn legal-status Critical Current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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/422—Discharge tongues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape
    • F05D2250/71—Shape curved
    • F05D2250/712—Shape curved concave

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

A centrifugal fan comprises a casing (2) having a helical external profile, defined by a pair of half-shells (2a, 2b) capable of being coupled to each other, a fan wheel (3) mounted in the casing (2) and capable of being driven in rotation about a first axis (X), there being defined in the casing (2) a lateral suction aperture (6), coaxial with the first axis (X), and a tangential delivery aperture (5), coaxial with a second axis (Y) directed tangentially to the fan wheel (3), inside the casing (2) a pressure chamber (7) being defined having a volume formed between the fan wheel (3) and the inner helical profile (3b) of the casing (2). The fan further comprises a flow separator (8) arranged at the zone (M) having the smallest radial distance between the fan wheel (3) and the inner profile (3b) of the casing (2), the flow separator (8) being defined conjointly by a pair of appendages (9), each formed in the respective casing half-shell (2a, 2b).
EP07107751A 2006-05-16 2007-05-08 Centrifugal fan, particularly for extractor hoods and fume extractors Withdrawn EP1857683A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000193A ITPD20060193A1 (en) 2006-05-16 2006-05-16 CENTRIFUGAL FAN, PARTICULARLY FOR FUME EXTRACTOR HOODS AND EXTRACTORS

Publications (2)

Publication Number Publication Date
EP1857683A2 EP1857683A2 (en) 2007-11-21
EP1857683A3 true EP1857683A3 (en) 2010-02-24

Family

ID=38269004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07107751A Withdrawn EP1857683A3 (en) 2006-05-16 2007-05-08 Centrifugal fan, particularly for extractor hoods and fume extractors

Country Status (3)

Country Link
EP (1) EP1857683A3 (en)
IT (1) ITPD20060193A1 (en)
RU (1) RU2426013C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101457946B (en) * 2007-12-11 2010-11-24 宁波方太厨具有限公司 Bionic micropore noise reduction structure for smoke exhaust system
DE102008051362A1 (en) * 2008-10-15 2010-04-22 Behr Gmbh & Co. Kg Radial blower housing
DE102012218286A1 (en) * 2012-10-08 2014-04-10 GEA Küba GmbH fan device
CN106855062A (en) * 2016-12-15 2017-06-16 东华大学 A kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29920373U1 (en) * 1999-11-19 2000-01-13 Motoren Ventilatoren Landshut Gmbh, 84030 Landshut Housing for a fan, in particular a radial fan
EP1094224A2 (en) * 1999-10-19 2001-04-25 ebm Werke GmbH & Co. KG Radial fan
US20020131861A1 (en) * 2001-03-16 2002-09-19 Masaharu Sakai Centrifugal blower having noise-reduction structure
US20030049122A1 (en) * 2001-08-28 2003-03-13 Kim Sung Chun Blower
US20050214114A1 (en) * 2004-03-25 2005-09-29 Yu-Nien Huang Centrifugal fan
US20060051204A1 (en) * 2004-09-03 2006-03-09 Lyons Leslie A Lobed joint draft inducer blower
FR2875560A1 (en) * 2004-09-23 2006-03-24 Renault Sas Centrifugal fan for e.g. ventilating equipment, has diffuser with constant section, and volute tongue inclined with respect to wheel axle at preset inclination angle of low value and situated in plane parallel to axle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094224A2 (en) * 1999-10-19 2001-04-25 ebm Werke GmbH & Co. KG Radial fan
DE29920373U1 (en) * 1999-11-19 2000-01-13 Motoren Ventilatoren Landshut Gmbh, 84030 Landshut Housing for a fan, in particular a radial fan
US20020131861A1 (en) * 2001-03-16 2002-09-19 Masaharu Sakai Centrifugal blower having noise-reduction structure
US20030049122A1 (en) * 2001-08-28 2003-03-13 Kim Sung Chun Blower
US20050214114A1 (en) * 2004-03-25 2005-09-29 Yu-Nien Huang Centrifugal fan
US20060051204A1 (en) * 2004-09-03 2006-03-09 Lyons Leslie A Lobed joint draft inducer blower
FR2875560A1 (en) * 2004-09-23 2006-03-24 Renault Sas Centrifugal fan for e.g. ventilating equipment, has diffuser with constant section, and volute tongue inclined with respect to wheel axle at preset inclination angle of low value and situated in plane parallel to axle

Also Published As

Publication number Publication date
RU2007118153A (en) 2008-11-20
RU2426013C2 (en) 2011-08-10
EP1857683A2 (en) 2007-11-21
ITPD20060193A1 (en) 2007-11-17

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Inventor name: TANONI, FRANCESCO

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