JPS5463237A - Forced draft device of swichboard - Google Patents
Forced draft device of swichboardInfo
- Publication number
- JPS5463237A JPS5463237A JP12928577A JP12928577A JPS5463237A JP S5463237 A JPS5463237 A JP S5463237A JP 12928577 A JP12928577 A JP 12928577A JP 12928577 A JP12928577 A JP 12928577A JP S5463237 A JPS5463237 A JP S5463237A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- magnet
- fan
- swichboard
- forced draft
- 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
- Patch Boards (AREA)
Abstract
PURPOSE: To prevent vibration of a damper by providing a magnet to hold said damper in closed position.
CONSTITUTION: When a normally used fan 2 is in operation, no current is supplied for the function of a magnet 11 of said fan 2 and a damper 5 opens to the pressure of the exhaust while stand-by fan 3 is not in operation and a current is supplied to the magnet 11 of said fan 3 whereby a steel plate 12 is attracted by the magnet 11 to hold the damper 5 in firmly closed position against the vibration and the like.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12928577A JPS5463237A (en) | 1977-10-27 | 1977-10-27 | Forced draft device of swichboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12928577A JPS5463237A (en) | 1977-10-27 | 1977-10-27 | Forced draft device of swichboard |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5463237A true JPS5463237A (en) | 1979-05-22 |
Family
ID=15005790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12928577A Pending JPS5463237A (en) | 1977-10-27 | 1977-10-27 | Forced draft device of swichboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5463237A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012177501A (en) * | 2011-02-25 | 2012-09-13 | Nitto Electric Works Ltd | Ventilation device of box for storing electrical equipment |
-
1977
- 1977-10-27 JP JP12928577A patent/JPS5463237A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012177501A (en) * | 2011-02-25 | 2012-09-13 | Nitto Electric Works Ltd | Ventilation device of box for storing electrical equipment |
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