US 12,006,953 B2
Blower with silencer
Shinya Hakuta, Ashigarakami-gun (JP); Shogo Yamazoe, Ashigarakami-gun (JP); Yoshihiro Sugawara, Ashigarakami-gun (JP); and Akihiko Ohtsu, Ashigarakami-gun (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Aug. 12, 2022, as Appl. No. 17/886,556.
Application 17/886,556 is a continuation of application No. PCT/JP2021/004853, filed on Feb. 10, 2021.
Claims priority of application No. 2020-055261 (JP), filed on Mar. 26, 2020.
Prior Publication US 2022/0389938 A1, Dec. 8, 2022
Int. Cl. F04D 29/66 (2006.01); F04D 19/00 (2006.01); F04D 29/54 (2006.01)
CPC F04D 29/665 (2013.01) [F04D 19/002 (2013.01); F04D 29/542 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A blower with a silencer, the blower comprising:
an axial fan that includes a casing having an inner space that penetrates in one direction, and a rotor blade disposed in the inner space of the casing; and
a silencer that is disposed at a position connected to the inner space of the axial fan,
wherein the axial fan has a plurality of fixed blades,
the axial fan has a sound pressure distribution having, in a plurality of fixed blade opening portions which are each formed between the adjacent fixed blades, a position at which a sound pressure is high and a position at which the sound pressure is low in a circumferential direction in the inner space during driving,
the silencer is connected to the position at which the sound pressure is high and is not connected to the position at which the sound pressure is low in the sound pressure distribution within at least one of the plurality of fixed blade opening portions, and
the silencer is not disposed at the position at which the sound pressure is low in all of the plurality of fixed blade opening portions.