EP0342484A3 - Very noiseless motor driven centrifugal fan - Google Patents

Very noiseless motor driven centrifugal fan Download PDF

Info

Publication number
EP0342484A3
EP0342484A3 EP19890108330 EP89108330A EP0342484A3 EP 0342484 A3 EP0342484 A3 EP 0342484A3 EP 19890108330 EP19890108330 EP 19890108330 EP 89108330 A EP89108330 A EP 89108330A EP 0342484 A3 EP0342484 A3 EP 0342484A3
Authority
EP
European Patent Office
Prior art keywords
motor driven
centrifugal fan
driven centrifugal
volute
noiseless motor
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Withdrawn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
EP19890108330
Other languages
German (de)
French (fr)
Other versions
EP0342484A2 (en
Inventor
Valerio Giordano Riello
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.)
Riello Condizionatori SpA
Original Assignee
Riello Condizionatori 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 Riello Condizionatori SpA filed Critical Riello Condizionatori SpA
Publication of EP0342484A2 publication Critical patent/EP0342484A2/en
Publication of EP0342484A3 publication Critical patent/EP0342484A3/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Withdrawn legal-status Critical Current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
    • F04D29/66—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
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence

Landscapes

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

Abstract

The motor driven centrifugal fan (10) according to the present invention has the inner surface (18) of the volute (12) and possibly also the inner surfaces of the sidewalls (13) laterally defining the volute which are roughened.
The roughness can comprise projections or recesses of irregular shape, for example of orange-peel type, or of regular shape, for exam­ ple regular polygons or circles which can be arranged along parallel lines which are or not offset from each other.
EP19890108330 1988-05-16 1989-05-09 Very noiseless motor driven centrifugal fan Withdrawn EP0342484A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20595/88A IT1217607B (en) 1988-05-16 1988-05-16 CENTRIFUGAL MOTOR FAN PARTICULARLY SILENT
IT2059588 1988-05-16

Publications (2)

Publication Number Publication Date
EP0342484A2 EP0342484A2 (en) 1989-11-23
EP0342484A3 true EP0342484A3 (en) 1990-10-03

Family

ID=11169315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890108330 Withdrawn EP0342484A3 (en) 1988-05-16 1989-05-09 Very noiseless motor driven centrifugal fan

Country Status (2)

Country Link
EP (1) EP0342484A3 (en)
IT (1) IT1217607B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20020145A1 (en) * 2002-07-02 2004-01-02 Comefri Spa ANTI-NOISE AND ANTI-VORTE DIVIDER
DE102008027845A1 (en) * 2008-06-11 2009-12-17 Behr Gmbh & Co. Kg Motor vehicle air conditioning system has pipe or channel for guiding fluid, and wall, which comprises flow area, where upper surface of wall restricts flow area
DE102013222207B4 (en) * 2013-10-31 2022-03-03 Mahle International Gmbh centrifugal fan
CN104675752B (en) * 2015-03-16 2017-04-12 中国机械工业集团有限公司 Centrifugal fan volute employing granular damping vibration attenuation
CN105065332B (en) * 2015-09-11 2018-11-30 珠海格力电器股份有限公司 Air conditioner, drum-shaped volute air duct system and air duct volute thereof
CN105115060A (en) * 2015-09-29 2015-12-02 北京卫家环境技术有限公司 Air purifier
CN107940585A (en) * 2017-12-26 2018-04-20 海信（广东）空调有限公司 Air duct bottom plate structure, air duct device and air conditioner indoor unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600692C (en) *
DE2203450A1 (en) * 1972-01-26 1973-08-02 Christ & Co O FACILITY ON FAN AIR DUCTS
FR2347539A1 (en) * 1976-04-05 1977-11-04 Rolls Royce ACOUSTIC COATING FOR TURBOREACTOR DUCTED BLOWER DUCT
FR2596108A1 (en) * 1986-03-22 1987-09-25 Usui Kokusai Sangyo Kk BLADES FOR FAN PROPELLER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600692C (en) *
DE2203450A1 (en) * 1972-01-26 1973-08-02 Christ & Co O FACILITY ON FAN AIR DUCTS
FR2347539A1 (en) * 1976-04-05 1977-11-04 Rolls Royce ACOUSTIC COATING FOR TURBOREACTOR DUCTED BLOWER DUCT
FR2596108A1 (en) * 1986-03-22 1987-09-25 Usui Kokusai Sangyo Kk BLADES FOR FAN PROPELLER

Also Published As

Publication number Publication date
EP0342484A2 (en) 1989-11-23
IT1217607B (en) 1990-03-30
IT8820595A0 (en) 1988-05-16

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