CENTRIFUGAL FAN

WIPO Patent Application WO/2023/032762

A1

This centrifugal fan rotates around the fan axial center (CL) thereof and thereby suctions air from one side in the axial direction (Da) of the fan axial center and blows the suctioned air toward the outside in the radial direction (Dr) of the fan axial center. The centrifugal fan comprises a plurality of blades (32), a side plate (34), and a main plate (36, 43, 401). The plurality of blades are disposed side-by-side around the fan axial center and have a blade rear edge (324) at the outside thereof in the radial direction. The side plate has formed therein an air suction hole (34a) into which air is suctioned, and the side plate is provided at one side in the axial direction relative to the plurality of blades and is linked to each of the plurality of blades. The main plate is linked to each of the plurality of blades at the side opposite of the side plate and widens in the radial direction. In addition: where the inner diameter of the side plate is Dsi and the outer diameter of the side plate is Dso, the relationship Dsi/Dso is 0.5 < Dsi/Dso < 0.7; and the blade rear edges are formed so as to be located further inward in the radial direction the further toward the one side in the axial direction.

ISHII FUMIYA (JP)
YAMAOKA JUN (JP)

PCT/JP2022/031753

March 09, 2023

August 23, 2022

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DENSO CORP (JP)

F04D29/28; F04D29/30; F04D29/66

WO2009139422A1	2009-11-19
WO2015170401A1	2015-11-12

JPH0270997A	1990-03-09
JPH02166323A	1990-06-27
JP2001132687A	2001-05-18

YOU-I PATENT FIRM (JP)

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