JPS6454148A - Ventilation fan - Google Patents
Ventilation fanInfo
- Publication number
- JPS6454148A JPS6454148A JP21052787A JP21052787A JPS6454148A JP S6454148 A JPS6454148 A JP S6454148A JP 21052787 A JP21052787 A JP 21052787A JP 21052787 A JP21052787 A JP 21052787A JP S6454148 A JPS6454148 A JP S6454148A
- Authority
- JP
- Japan
- Prior art keywords
- air
- shutter
- adapter
- constitution
- delivered
- 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.)
- Pending
Links
Landscapes
- Ventilation (AREA)
Abstract
PURPOSE:To reduce the noise level by disposing a shutter for preventing outside air from entering on the delivery side of a centrifugal fan and an ellipse- sectioned air guider at the leading edge of the shutter. CONSTITUTION:When a centrifugal fan 5 is operated, the room air is vented to the outside through outlet 6, interior of adapter 7 and duct 8 as shown by arrows. The shutter 10 is forced open by the air pressure. Because an elipse- sectioned air guider 11 is disposed at the leading edge of the shutter 10, the draft resistance of the delivered air is reduced, and the air is delivered through the periphery of the shutter 10 and the interior of the adapter 7 without causing swirls. By this constitution, the noise level can be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21052787A JPS6454148A (en) | 1987-08-25 | 1987-08-25 | Ventilation fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21052787A JPS6454148A (en) | 1987-08-25 | 1987-08-25 | Ventilation fan |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454148A true JPS6454148A (en) | 1989-03-01 |
Family
ID=16590840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21052787A Pending JPS6454148A (en) | 1987-08-25 | 1987-08-25 | Ventilation fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454148A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07214105A (en) * | 1994-01-10 | 1995-08-15 | Tippins Inc | Casting and rolling method and device of casting and rolling |
-
1987
- 1987-08-25 JP JP21052787A patent/JPS6454148A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07214105A (en) * | 1994-01-10 | 1995-08-15 | Tippins Inc | Casting and rolling method and device of casting and rolling |
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