CA2233381A1 - Fan system with variable air volume control - Google Patents
Fan system with variable air volume controlInfo
- Publication number
- CA2233381A1 CA2233381A1 CA 2233381 CA2233381A CA2233381A1 CA 2233381 A1 CA2233381 A1 CA 2233381A1 CA 2233381 CA2233381 CA 2233381 CA 2233381 A CA2233381 A CA 2233381A CA 2233381 A1 CA2233381 A1 CA 2233381A1
- Authority
- CA
- Canada
- Prior art keywords
- rotor
- air
- shaft
- central opening
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A centrifugal fan apparatus for installation in an air plenum adapted to provide pressurized air to a ventilating system includes a centrifugal fan rotor having front and rear sidewalls and a number of blades extending between these sidewalls. The front sidewall has a central opening for receiving air while the rear sidewall is attached to a rotatable drive shaft that extends rearwardly from the rotor. A motor is connected to the shaft in order to rotate it and the rotor. A
linearly movable platform supports the rotor, shaft and motor and an actuator moves this platform forwardly or rearwardly in order to control the volume of air flowing out of the rotor. An air inlet member is mounted rigidly at the central opening and has a generally cylindrical section that can extend into the rotor when the rotor is moved to a forward position
linearly movable platform supports the rotor, shaft and motor and an actuator moves this platform forwardly or rearwardly in order to control the volume of air flowing out of the rotor. An air inlet member is mounted rigidly at the central opening and has a generally cylindrical section that can extend into the rotor when the rotor is moved to a forward position
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/824,663 US5827044A (en) | 1997-03-26 | 1997-03-26 | Fan system with variable air volume control |
US08/824,663 | 1997-03-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2233381A1 true CA2233381A1 (en) | 1998-09-26 |
CA2233381C CA2233381C (en) | 2002-02-26 |
Family
ID=25242001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2233381 Expired - Lifetime CA2233381C (en) | 1997-03-26 | 1998-03-26 | Fan system with variable air volume control |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2233381C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103148007A (en) * | 2012-11-27 | 2013-06-12 | 洛阳源创电气有限公司 | Mine ventilating fan control system capable of automatically adjusting air quantity |
-
1998
- 1998-03-26 CA CA 2233381 patent/CA2233381C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2233381C (en) | 2002-02-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20180326 |