FR2327430A1 - Double sided rotor for centrifugal fan - has alternate wide and narrow blades to equalise air flow and is one piece plastics moulding - Google Patents

Double sided rotor for centrifugal fan - has alternate wide and narrow blades to equalise air flow and is one piece plastics moulding

Info

Publication number
FR2327430A1
FR2327430A1 FR7629366A FR7629366A FR2327430A1 FR 2327430 A1 FR2327430 A1 FR 2327430A1 FR 7629366 A FR7629366 A FR 7629366A FR 7629366 A FR7629366 A FR 7629366A FR 2327430 A1 FR2327430 A1 FR 2327430A1
Authority
FR
France
Prior art keywords
rotor
centrifugal fan
air flow
blades
double sided
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
FR7629366A
Other languages
French (fr)
Other versions
FR2327430B3 (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.)
PETZ ELEKTRO WAERME TECHN
Original Assignee
PETZ ELEKTRO WAERME TECHN
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 PETZ ELEKTRO WAERME TECHN filed Critical PETZ ELEKTRO WAERME TECHN
Publication of FR2327430A1 publication Critical patent/FR2327430A1/en
Application granted granted Critical
Publication of FR2327430B3 publication Critical patent/FR2327430B3/fr
Granted 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
    • F04D29/26—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)

Abstract

The rotor (1) for a centrifugal fan has a hub (4) which carries an even number of curved radial blades (2). The hub is mounted by spokes on a boss (4) to form passages for the inlet air. The depths of the surfaces (3) between the blades (2) are alternately deep and shallow, the depth being either one third or two thirds of the rotor length. This alteration of the depth of the radial passage between the blades (2) provides an even flow of air along the whole axial length of the rotor. The rotor is a one piece plastic moulding and is provided with a central boss (5) for mounting on a shaft.
FR7629366A 1975-10-06 1976-09-30 Double sided rotor for centrifugal fan - has alternate wide and narrow blades to equalise air flow and is one piece plastics moulding Granted FR2327430A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752544607 DE2544607A1 (en) 1975-10-06 1975-10-06 IMPELLER FOR CENTRIFUGAL FAN

Publications (2)

Publication Number Publication Date
FR2327430A1 true FR2327430A1 (en) 1977-05-06
FR2327430B3 FR2327430B3 (en) 1979-06-08

Family

ID=5958406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7629366A Granted FR2327430A1 (en) 1975-10-06 1976-09-30 Double sided rotor for centrifugal fan - has alternate wide and narrow blades to equalise air flow and is one piece plastics moulding

Country Status (5)

Country Link
AT (1) AT348089B (en)
BE (1) BE846740A (en)
CH (1) CH597520A5 (en)
DE (1) DE2544607A1 (en)
FR (1) FR2327430A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4444483A1 (en) * 1994-12-14 1996-06-20 Bosch Gmbh Robert Radial flow fan e.g. for electrical machines

Also Published As

Publication number Publication date
BE846740A (en) 1977-01-17
ATA727776A (en) 1978-06-15
CH597520A5 (en) 1978-04-14
FR2327430B3 (en) 1979-06-08
DE2544607A1 (en) 1977-04-14
AT348089B (en) 1979-01-25

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Legal Events

Date Code Title Description
ST Notification of lapse