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Patent Searching and Data


Title:
BLOWER DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/173803
Kind Code:
A1
Abstract:
This blower device is provided with: an axial flow impeller comprising a hub which has a rotation axis, and also comprising a plurality of blades (8) arranged around the hub; a motor rotating about the rotation axis; and a bell mouth (4) surrounding the axial flow impeller. The blades (8) each have, as the outer peripheral portion thereof: a blade front edge (13) located on the upstream side in an air flow direction; a blade rear edge (14) located on the downstream side in the air flow direction; and a blade end (15) extending from the radially outer side of the blade front edge (13) to the radially outer side of the blade rear edge (14). When viewed in the direction of the rotation axis, the maximum diameter (Df) of the axial flow impeller is larger than the minimum diameter (Db) of the bell mouth (4), and in the region in which the blades (8) and the bell mouth (4) overlap when viewed in the direction of the rotation axis, the distance between the bell mouth (4) and the blade ends (15) which face the bell mouth (4) is larger on the radially outer peripheral side than on the radially inner peripheral side.

Inventors:
YOSHIKAWA SHOTA
SHIGEMORI MASAHIRO
Application Number:
PCT/JP2018/009210
Publication Date:
September 27, 2018
Filing Date:
March 09, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F04D29/54; F04D29/38
Domestic Patent References:
WO2012098652A12012-07-26
Foreign References:
JP2010275907A2010-12-09
JPS4818526B11973-06-06
JP2006018262A2006-01-19
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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