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1. (CN1784547) Multi-vane centrifugal blower

Office : China
Application Number: 200480011841.7 Application Date: 26.04.2004
Publication Number: 1784547 Publication Date: 07.06.2006
Grant Number: 1784547 Grant Date: 20.07.2011
Publication Kind : B
Prior PCT appl.: Application Number:PCTJP2004006019 ; Publication Number:2004097225 Click to see the data
IPC:
F04D 29/30
F04D 29/28
F04D 29/44
F04D 29/66
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
26
Rotors specially adapted for elastic fluids
28
for centrifugal or helico-centrifugal pumps
30
Vanes
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
26
Rotors specially adapted for elastic fluids
28
for centrifugal or helico-centrifugal pumps
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
40
Casings; Connections for working fluid
42
for radial or helico-centrifugal pumps
44
Fluid-guiding means, e.g. diffusers
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
66
Combating cavitation, whirls, noise, vibration, or the like; Balancing
CPC:
F04D 29/4213
F04D 29/162
F04D 29/283
Applicants: Daikin Ind Ltd.
大金工业株式会社
Inventors: Yamasaki Takahiro
山崎登博
Agents: dang xiaolin
北京三友知识产权代理有限公司 11127
Priority Data: 126122/2003 01.05.2003 JP
Title: (EN) Multi-vane centrifugal blower
(ZH) 多叶片离心式送风机
Abstract: front page image
(EN) A multi-vane centrifugal blower, wherein a large number of vanes (33), (33), ... are fixedly disposed on a hub (31) drivingly rotated around its axis while keeping specified distances in the circumferential direction in an impeller (3) stored in a fan housing (4). An annular member (32) for reinforcement is installed on the vanes (33), (33), ... on the opposite side of the hub (31). A bell mouth (7) having a recessed part (7a) is installed around the air suction port (5) of the fan housing (4). Air suction port side end parts (33d), (33d), ... positioned on the vanes (33), (33), ... on the opposite side of the hub (31) are inserted into the recessed part (7a) of the bell mouth (7) without a shroud.
(ZH)

本发明提供一种多叶片离心式送风机,包括:叶轮,其具有绕轴心被驱动旋转的轮毂,与轮毂相对、沿着轮毂的圆周方向保持预定的间隙进行设置并固定的多片叶片,和在所述多片叶片的与轮毂相反的一侧设置的加强用环状部件;以及风扇壳体,其具有形成有空气吸入口的空气吸入口形成板、并在其内部可以旋转地容纳叶轮,在风扇壳体上、在空气吸入口的周围设置喇叭口,该喇叭口具有比空气吸入口形成板向上方突出的预定深度的凹部,空气吸入口形成板与所述喇叭口的边界部分上设置有台阶部,该台阶部的台阶差与环状部件的厚度相对应,位于所述多片叶片的与轮毂相反的一侧并且相对于所述环状部件突出的空气吸入口侧端部没有护罩,被可旋转地插入所述喇叭口的凹部及台阶部的内侧。


Also published as:
EP1624193US20060198729WO/2004/097225