FR2271425A1 - Centrifugal fan of cheap construction - has drum housing for motor and rotor and end caps with central partition - Google Patents
Centrifugal fan of cheap construction - has drum housing for motor and rotor and end caps with central partitionInfo
- Publication number
- FR2271425A1 FR2271425A1 FR7418148A FR7418148A FR2271425A1 FR 2271425 A1 FR2271425 A1 FR 2271425A1 FR 7418148 A FR7418148 A FR 7418148A FR 7418148 A FR7418148 A FR 7418148A FR 2271425 A1 FR2271425 A1 FR 2271425A1
- Authority
- FR
- France
- Prior art keywords
- rotor
- centrifugal fan
- chamber
- motor
- end caps
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A centrifugal fan unit has a cylindrical drum divided into two chambers (5, 6) by a partitioning disc (4) near the centre, and fitted with end covers (2, 3). One chamber (5) has four air entries (7) equally spaced around it, and the other chamber (6) houses the turbine type rotor (11) mounted on a bracket (12) attached to the inside of its end cover (3), with the axis of the rotor parallel to the axis of the drum. This rotor houses the drive motor, and is positioned against a hole through the partitioning disc (4), through which air is drawn from the first chamber (5) into the second (6) for expulsion through an outlet (8) on the side wall. A double curved guide sheet (14, 15) between the end cover (3) and the partitioning disc (4) guides the flow of air around the rotor.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7418148A FR2271425A1 (en) | 1974-05-17 | 1974-05-17 | Centrifugal fan of cheap construction - has drum housing for motor and rotor and end caps with central partition |
FR8216245A FR2533640A2 (en) | 1974-05-17 | 1982-09-24 | Motor-fan unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7418148A FR2271425A1 (en) | 1974-05-17 | 1974-05-17 | Centrifugal fan of cheap construction - has drum housing for motor and rotor and end caps with central partition |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2271425A1 true FR2271425A1 (en) | 1975-12-12 |
FR2271425B1 FR2271425B1 (en) | 1979-02-16 |
Family
ID=9139246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7418148A Granted FR2271425A1 (en) | 1974-05-17 | 1974-05-17 | Centrifugal fan of cheap construction - has drum housing for motor and rotor and end caps with central partition |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2271425A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417660A1 (en) * | 1978-02-17 | 1979-09-14 | Godefroy Raymond | Casing for fan handling polluted gases - has circular body with tangential outlet and logarithmic volute insert in upper half |
EP0166174A1 (en) * | 1984-05-29 | 1986-01-02 | Kunststofftechnik KG | Radial ventilator |
EP0705982A2 (en) * | 1994-09-30 | 1996-04-10 | J.E. Stork Ventilatoren B.V. | Fan |
NL1001258C2 (en) * | 1995-09-21 | 1997-03-25 | Ubbink Nederland Bv | Equipment for mechanical ventilation of building |
EP1657450A1 (en) * | 2004-11-12 | 2006-05-17 | Hans Östberg | A plate for a fan |
WO2008047162A1 (en) * | 2006-10-17 | 2008-04-24 | Envirovent Limited | Air extraction unit |
EP1967741A1 (en) * | 2007-03-05 | 2008-09-10 | Hans Östberg | A duct fan |
-
1974
- 1974-05-17 FR FR7418148A patent/FR2271425A1/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417660A1 (en) * | 1978-02-17 | 1979-09-14 | Godefroy Raymond | Casing for fan handling polluted gases - has circular body with tangential outlet and logarithmic volute insert in upper half |
EP0166174A1 (en) * | 1984-05-29 | 1986-01-02 | Kunststofftechnik KG | Radial ventilator |
EP0705982A2 (en) * | 1994-09-30 | 1996-04-10 | J.E. Stork Ventilatoren B.V. | Fan |
EP0705982A3 (en) * | 1994-09-30 | 1997-04-09 | Stork J E Ventilatoren Bv | Fan |
NL1001258C2 (en) * | 1995-09-21 | 1997-03-25 | Ubbink Nederland Bv | Equipment for mechanical ventilation of building |
EP1657450A1 (en) * | 2004-11-12 | 2006-05-17 | Hans Östberg | A plate for a fan |
WO2008047162A1 (en) * | 2006-10-17 | 2008-04-24 | Envirovent Limited | Air extraction unit |
EP1967741A1 (en) * | 2007-03-05 | 2008-09-10 | Hans Östberg | A duct fan |
Also Published As
Publication number | Publication date |
---|---|
FR2271425B1 (en) | 1979-02-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |