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Patent Searching and Data


Title:
VENTILATION FAN FOR DUCT
Document Type and Number:
WIPO Patent Application WO/2018/179186
Kind Code:
A1
Abstract:
This ventilation fan for a duct includes: a ventilation fan body having formed therein an air intake opening and an air discharge opening; a blower for forming an air flow which flows from the air intake opening into the ventilation fan body and flows out of the air discharge opening; and a duct connection member (8) having a cylindrical shape, the duct connection member (8) being mounted in a removable manner to the ventilation fan body and providing communication between the air discharge opening and a duct. The ventilation fan for a duct is installed in an under-roof space with the air intake opening facing the room interior side, and air sucked in from the room interior through the air intake opening is discharged into the duct through the duct connection member (8). The ventilation fan for a duct is provided with a shutter (9) for preventing the entry of outside air when the blower is stopped. The shutter (9) is rotatably supported within the duct connection member (8) by a shaft section (23) formed on the duct connection member (8) and by a bearing section (26) formed on the shutter. The shaft section (23) is circular column-shaped and has an axially extending cutout formed in the room exterior-side side surface of the shaft section (23). A convex-shaped protrusion is provided at the front end of the shaft section (23), and the bottom surface of the protrusion protrudes to the room exterior side from the portion where the cutout is provided.

Inventors:
NAGASAKI DAISUKE (JP)
TAKASE TSUYOSHI (JP)
TAKEI TOSHITAKE (JP)
KOSAKI TAKAHIRO (JP)
SAWANO YUSUKE (JP)
Application Number:
PCT/JP2017/013078
Publication Date:
October 04, 2018
Filing Date:
March 29, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F7/06; F24F7/10; F24F13/14
Foreign References:
JPH07318140A1995-12-08
JPH0418249U1992-02-14
JPH09137987A1997-05-27
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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