Title:
VENTILATION FAN
Document Type and Number:
WIPO Patent Application WO/2023/162377
Kind Code:
A1
Abstract:
This ventilation fan includes a frame and an impeller (200). The frame has a box-like shape and opens on a windward side and a leeward side. The impeller (200) is disposed inside the frame. A boss section (230) is disposed in a central portion of the impeller (200). In the impeller (200), blades (240) are fixed to the outer circumference of the boss section (230). The blades (240) are each configured to: protrude from the leeward side toward the windward side; and partially sink toward the leeward side.
Inventors:
KAWASAKI YUTAKA
TAKADA YOSHIOMI
YOSHIDA YOHEI
TAKADA YOSHIOMI
YOSHIDA YOHEI
Application Number:
PCT/JP2022/043245
Publication Date:
August 31, 2023
Filing Date:
November 22, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F24F13/15; F04D29/38; F04D29/64; F24F7/013
Domestic Patent References:
| WO2019069374A1 | 2019-04-11 |
Foreign References:
| JP2007291902A | 2007-11-08 | |||
| JPH11257698A | 1999-09-21 | |||
| JP2012241980A | 2012-12-10 | |||
| JPH0377130U | 1991-08-02 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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