JPS5463237A - Forced draft device of swichboard - Google Patents

Forced draft device of swichboard

Info

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
Application number
JP12928577A
Other languages
Japanese (ja)
Inventor
Yoshio Tsukuda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12928577A priority Critical patent/JPS5463237A/en
Publication of JPS5463237A publication Critical patent/JPS5463237A/en
Pending legal-status Critical Current

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  • 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
JP12928577A 1977-10-27 1977-10-27 Forced draft device of swichboard Pending JPS5463237A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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