SILENCER-ATTACHED BLOWER

WIPO Patent Application WO/2020/217806

A1

Provided is a silencer-attached blower which can suppress a sound having a specific frequency while securing the air volume of a fan, and can be downsized. The silencer-attached blower comprises: an axial fan having a casing, a motor attached to the casing, and a rotor having a shaft part that is attached to the motor and rotates and a blade that is formed to protrude radially outward from the shaft part; and a silencer attached to the casing, wherein the silencer includes a resonator that selectively silences a predominant sound generated by the axial fan, the silencer is disposed at a position where at least a portion thereof overlaps the shaft part when viewed from a rotation axis direction of the rotor, and when a circle having, as a center, the rotation axis and having, as a radius, a line connecting the rotation axis and a forefront tip point of the blade is set as a rotation region in a cross section perpendicular to a rotation axis of the rotor, the area of the silencer is smaller than the area of the rotation region in the cross section perpendicular to the rotation axis.

SUGAWARA YOSHIHIRO (JP)
HAKUTA SHINYA (JP)
OHTSU AKIHIKO (JP)
YAMAZOE SHOGO (JP)

PCT/JP2020/012600

October 29, 2020

March 23, 2020

Click for automatic bibliography generation  

FUJIFILM CORP (JP)

F04D29/66; G10K11/16; G10K11/172

WO2004061817A1

2004-07-22

JP2011169295A	2011-09-01
JPH04265500A	1992-09-21
JP2008058389A	2008-03-13
JP2013167189A	2013-08-29
JP2005076585A	2005-03-24
US20160177973A1	2016-06-23

J. ACOUST. SOC. JPN., vol. 11, no. 1, 1990, pages 19 - 24
See also references of EP 3961047A4

NAKASHIMA Junko et al. (JP)

View/Download PDF      PDF Help

Previous Patent: SILICONE RUBBER COMPOSITION FOR MOLDING AND SILICONE RUBBER MOLD

Next Patent: IMAGE ORIENTATION SETTING DEVICE, METHOD, AND PROGRAM