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1. (WO2018180063) CENTRIFUGAL BLOWER

Pub. No.:    WO/2018/180063    International Application No.:    PCT/JP2018/006459
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Feb 23 00:59:59 CET 2018
IPC: F04D 29/16
F04D 29/42
Applicants: DENSO CORPORATION
株式会社デンソー
Inventors: ISHII Fumiya
石井 文也
ODA Shuzo
小田 修三
IMAHIGASHI Shouichi
今東 昇一
Title: CENTRIFUGAL BLOWER
Abstract:
This centrifugal blower is provided with a rotating shaft (14), a turbo fan (18) and a casing (12). A shroud ring (54) of the turbo fan and a cover part (221) of the casing form a gap (G1) therebetween. The gap includes a radial gap (G11) formed between the cover part and the shroud ring in a radial direction, and an axial gap (G12) formed between the cover part and the shroud ring in the axial direction. The radial gap is located outside the inner circumferential end section of the shroud in the radial direction. The axial gap is located inside the radial gap in the radial direction. The minimum gap dimension (D11) of the radial gap is smaller than the minimum gap dimension (D12) of the axial gap. The shortest distance (D1) between the inner circumferential end section of the shroud and the cover part is greater than the minimum gap dimension of the radial gap.