Title:
MOTOR FAN IMPELLER
Document Type and Number:
WIPO Patent Application WO/2023/045004
Kind Code:
A1
Abstract:
A motor fan impeller, comprising a front cover plate (4) and a rear cover plate (6) arranged in sequence along an axial direction, wherein a hub (5) is fixedly arranged between the front cover plate (4) and the rear cover plate (6), and a plurality of blades (3) are fixedly arranged on the hub (5) in sequence along a circumferential direction. An air inlet (41) is arranged at the center of the front cover plate (4), and an air outlet channel (31) is formed between adjacent blades (3), so that wind may enter along the axial direction via the air inlet (41), and then flow out radially by means of the air outlet channel (31). In an airflow direction, each blade (3) sequentially comprises an inlet structure (1) and an outlet structure (2). The inlet structure (1) is a plane symmetrical structure, and a symmetrical plane (S) is a plane where the rotational center line of the hub (5) is located. In the outlet structure (2), at least part of a circumferential end surface is a deforming surface (21), and along the airflow direction (Q), the deforming surface (21) gradually deviates from the corresponding symmetrical plane (S). Since the deforming surface (21) is provided on the outlet structure (2), compared to straight blades in the prior art, the circumferential expansion trend of an airflow channel may be mitigated, and the flow efficiency of the fan may be increased.
More Like This:
| JPH03264798 | ELECTRIC MOTOR-DRIVEN BLOWER |
| JPS5449604 | CENTRIFUGAL IMPELLER |
Inventors:
CUI KE (CN)
WANG TAO (CN)
ZHENG GUOLI (CN)
ZHOU QIANQIAN (CN)
HE WEILIN (CN)
WANG TAO (CN)
ZHENG GUOLI (CN)
ZHOU QIANQIAN (CN)
HE WEILIN (CN)
Application Number:
PCT/CN2021/125172
Publication Date:
March 30, 2023
Filing Date:
October 21, 2021
Export Citation:
Assignee:
CRRC ZHUZHOU ELECTRIC CO LTD (CN)
International Classes:
F04D29/28; F04D29/30; F04D29/66; H02K9/06
Domestic Patent References:
| WO2007040236A1 | 2007-04-12 |
Foreign References:
| CN216111447U | 2022-03-22 | |||
| CN109779964A | 2019-05-21 | |||
| CN210509638U | 2020-05-12 | |||
| CN113048096A | 2021-06-29 | |||
| CN209781249U | 2019-12-13 | |||
| CN109322842A | 2019-02-12 | |||
| US20090269196A1 | 2009-10-29 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
Download PDF: