JP-WO2025027968-A5 -

Dates

Publication Date

20260507

Application Date

20240509

Description

[Effects and Effects] The blower 100 according to the first embodiment comprises a casing 10 having an intake port 11 and an exhaust port 12, with a flow path 130 formed inside that communicates from the intake port 11 to the exhaust port 12; an impeller 20 disposed inside the casing 10 and rotatable around an axis, comprising a hub portion 21 located on the intake port 11 side, a rotor blade 30 formed on the hub portion 21, and a cylindrical portion 40 extending from the hub portion 21 toward the exhaust port 12 side and forming a flow path 130 between itself and the casing 10; and a plurality of fixed blades 70 extending radially from the inner circumferential surface 121 of the casing 10 toward the outer circumferential surface 42a of the cylindrical portion 40. In the above embodiment, the case where the rotor blade 30 has negative camber is illustrated, but the rotor blade 30 may also have positive camber. In the Z-axis direction, the distance L31B between the rotor blade 30 and the fixed wing 70B on the radially outer side is longer than the distance L32 between the rotor blade 30 and the fixed wing 70B on the radially inner side. Distance L31B is the distance in the Z-axis direction between the outer edge 32 of the rotor blade 30 and the end 70d of the fixed wing 70B. Distance L32 is the distance in the Z-axis direction between the base end 33 of the rotor blade 30 and the end 70c of the fixed wing 70B .