FR2647511B1 - CENTRIFUGAL FAN WITH REDUCED NOISE LEVEL - Google Patents

CENTRIFUGAL FAN WITH REDUCED NOISE LEVEL

Info

Publication number
FR2647511B1
FR2647511B1 FR8906846A FR8906846A FR2647511B1 FR 2647511 B1 FR2647511 B1 FR 2647511B1 FR 8906846 A FR8906846 A FR 8906846A FR 8906846 A FR8906846 A FR 8906846A FR 2647511 B1 FR2647511 B1 FR 2647511B1
Authority
FR
France
Prior art keywords
noise level
centrifugal fan
reduced noise
reduced
centrifugal
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.)
Expired - Lifetime
Application number
FR8906846A
Other languages
French (fr)
Other versions
FR2647511A1 (en
Inventor
Galko Jacques
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.)
VELECTA VENTILATION ELECT APPLIQ
Original Assignee
VELECTA VENTILATION ELECT APPLIQ
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 VELECTA VENTILATION ELECT APPLIQ filed Critical VELECTA VENTILATION ELECT APPLIQ
Priority to FR8906846A priority Critical patent/FR2647511B1/en
Publication of FR2647511A1 publication Critical patent/FR2647511A1/en
Application granted granted Critical
Publication of FR2647511B1 publication Critical patent/FR2647511B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/663—Sound attenuation
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
FR8906846A 1989-05-25 1989-05-25 CENTRIFUGAL FAN WITH REDUCED NOISE LEVEL Expired - Lifetime FR2647511B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8906846A FR2647511B1 (en) 1989-05-25 1989-05-25 CENTRIFUGAL FAN WITH REDUCED NOISE LEVEL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8906846A FR2647511B1 (en) 1989-05-25 1989-05-25 CENTRIFUGAL FAN WITH REDUCED NOISE LEVEL

Publications (2)

Publication Number Publication Date
FR2647511A1 FR2647511A1 (en) 1990-11-30
FR2647511B1 true FR2647511B1 (en) 1993-11-26

Family

ID=9382001

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8906846A Expired - Lifetime FR2647511B1 (en) 1989-05-25 1989-05-25 CENTRIFUGAL FAN WITH REDUCED NOISE LEVEL

Country Status (1)

Country Link
FR (1) FR2647511B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0612993D0 (en) * 2006-06-30 2006-08-09 Qinetiq Ltd Centrifugal impeller
CN107131153B (en) * 2017-07-12 2023-11-07 成都华川电装有限责任公司 Axial flow fan

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB305800A (en) * 1928-01-25 1929-02-14 Horace Stanley Pochin Improvements in or relating to centrifugal fans
DE902298C (en) * 1942-06-10 1954-01-21 Siemens Ag Fan for changing directions of rotation
GB983687A (en) * 1963-12-11 1965-02-17 Ametek Inc Centrifugal impellers and method of fabricating same
NL7015771A (en) * 1970-10-28 1972-05-03
CH541078A (en) * 1972-03-02 1973-08-31 Brechbuehl Fa Heinrich Plastic valve wheel
JPS5641492A (en) * 1979-09-11 1981-04-18 Matsushita Electric Works Ltd Hair dryer fan

Also Published As

Publication number Publication date
FR2647511A1 (en) 1990-11-30

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