FR2300240A1 - Double flow ventilating fan - has double rotor with blades separating inlet flow from exhaust flow - Google Patents

Double flow ventilating fan - has double rotor with blades separating inlet flow from exhaust flow

Info

Publication number
FR2300240A1
FR2300240A1 FR7504070A FR7504070A FR2300240A1 FR 2300240 A1 FR2300240 A1 FR 2300240A1 FR 7504070 A FR7504070 A FR 7504070A FR 7504070 A FR7504070 A FR 7504070A FR 2300240 A1 FR2300240 A1 FR 2300240A1
Authority
FR
France
Prior art keywords
flow
double
ventilating fan
exhaust
rotors
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
FR7504070A
Other languages
French (fr)
Other versions
FR2300240B3 (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.)
Pietracci SA Expl Brevets
Original Assignee
Pietracci SA Expl Brevets
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 Pietracci SA Expl Brevets filed Critical Pietracci SA Expl Brevets
Priority to FR7504070A priority Critical patent/FR2300240A1/en
Priority to BE164093A priority patent/BE838270A/en
Priority to NL7601253A priority patent/NL7601253A/en
Publication of FR2300240A1 publication Critical patent/FR2300240A1/en
Application granted granted Critical
Publication of FR2300240B3 publication Critical patent/FR2300240B3/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
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans

Landscapes

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

Abstract

A double flow ventilating fan which gives two air flows in opposite directions at the same time for intake and exhaust, with a single motor mounted at the centre of the circular housing, driving two rotors forming a single unit, has the rotors designed to directly separate two flows of air coming into contact with the outside. These rotors have a pattern of thin blades arranged radially to give a star shape, the centre corresponding to the axis of rotation of the motor. The blades are curved slightly in the opposite direction to their rotation, and may be helicoidal.
FR7504070A 1975-02-10 1975-02-10 Double flow ventilating fan - has double rotor with blades separating inlet flow from exhaust flow Granted FR2300240A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7504070A FR2300240A1 (en) 1975-02-10 1975-02-10 Double flow ventilating fan - has double rotor with blades separating inlet flow from exhaust flow
BE164093A BE838270A (en) 1975-02-10 1976-02-04 DOUBLE-FLOW FANS IMPROVEMENTS
NL7601253A NL7601253A (en) 1975-02-10 1976-02-06 DOUBLE ACTING FAN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7504070A FR2300240A1 (en) 1975-02-10 1975-02-10 Double flow ventilating fan - has double rotor with blades separating inlet flow from exhaust flow

Publications (2)

Publication Number Publication Date
FR2300240A1 true FR2300240A1 (en) 1976-09-03
FR2300240B3 FR2300240B3 (en) 1977-10-21

Family

ID=9150991

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504070A Granted FR2300240A1 (en) 1975-02-10 1975-02-10 Double flow ventilating fan - has double rotor with blades separating inlet flow from exhaust flow

Country Status (3)

Country Link
BE (1) BE838270A (en)
FR (1) FR2300240A1 (en)
NL (1) NL7601253A (en)

Also Published As

Publication number Publication date
NL7601253A (en) 1976-08-12
FR2300240B3 (en) 1977-10-21
BE838270A (en) 1976-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse