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Title:
VENTILATION FAN
Document Type and Number:
WIPO Patent Application WO/2013/153574
Kind Code:
A1
Abstract:
The reliability in the prevention of the spread of fire and the safety of a ventilation fan are improved by providing the fan with the following: a tubular metal body frame (1) which has a removable orifice (9) mounted on the front surface thereof and which forms a wind channel; a blower (30) that has an electric motor (2) and a fan blade unit (3) and that is mounted to the body frame (1); a switch case (11) that is made of flame-resistant resin, is mounted to the body frame (1), and houses at least a switch (10) for turning the blower (30) on and off; and a front cover (12) made of a metal plate and a back cover (13) made of a metal plate that cover the switch case (11).

Inventors:
OKAYAMA KAZUYA (JP)
Application Number:
PCT/JP2012/002482
Publication Date:
October 17, 2013
Filing Date:
April 10, 2012
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
OKAYAMA KAZUYA (JP)
International Classes:
F04D25/08; F04D29/00
Foreign References:
JPH0548016Y21993-12-20
JP4675651B22011-04-27
JPS63197839A1988-08-16
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
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