Title:
IMPELLER, MIXED FLOW BLOWER AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2021/147606
Kind Code:
A1
Abstract:
An impeller, a mixed flow blower, and an air conditioner. The impeller comprises an impeller cover (3), a hub (1), and a plurality of blades (2). The impeller cover (3) comprises an inner cavity which penetrates through along the axis, and the inner cavity is provided with an air inlet end and an air outlet end which are provided opposite to each other; the hub (1) is provided in the impeller cover (3); the plurality of blades (2) are connected between the inner surface of the impeller cover (3) and the outer surface of the hub (1); the blades (2) comprise blade root parts (24) connected to the outer surface of the hub (1) and extending along the outer surface of the hub (1) and blade outer edges (22) opposite to the blade root parts (24); the projection of the outline of each blade outer edge (22) on a longitudinal projection plane passing through an axis L is a variable-inclination-angle curve line, and in the direction from the air inlet end to the air outlet end, an included angle between the tangent line of the variable-inclination-angle curve line and the longitudinal datum line is gradually increased. Because the projection of each blade outer edge (22) on the longitudinal projection plane is a variable-inclination-angle curve line, and the included angle between the tangent line of the variable-inclination-angle curve line and the longitudinal datum line is gradually increased, the blades (2) guide an air flow in a flow passage step by step, and therefore a large pressure gradient can be avoided, and flowing losses are reduced.
Inventors:
TAN JIANMING (CN)
ZHANG ZHIPING (CN)
MA QUYANG (CN)
CHI XIAOLONG (CN)
SU YUHAI (CN)
ZHANG BIYAO (CN)
XIA KAI (CN)
ZHANG ZHIPING (CN)
MA QUYANG (CN)
CHI XIAOLONG (CN)
SU YUHAI (CN)
ZHANG BIYAO (CN)
XIA KAI (CN)
Application Number:
PCT/CN2020/139097
Publication Date:
July 29, 2021
Filing Date:
December 24, 2020
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F04D29/26; F04D29/66
Domestic Patent References:
| WO2014182121A1 | 2014-11-13 |
Foreign References:
| CN211501072U | 2020-09-15 | |||
| CN111441984A | 2020-07-24 | |||
| CN211449177U | 2020-09-08 | |||
| CN111156191A | 2020-05-15 | |||
| CN111255738A | 2020-06-09 | |||
| CN211715393U | 2020-10-20 | |||
| CN2345758Y | 1999-10-27 | |||
| CN2345758Y | 1999-10-27 | |||
| CN1573089A | 2005-02-02 | |||
| GB2502104A | 2013-11-20 | |||
| CN108252949A | 2018-07-06 | |||
| CN106402020A | 2017-02-15 | |||
| CN110701097A | 2020-01-17 | |||
| JP2010168903A | 2010-08-05 | |||
| EP1662136A2 | 2006-05-31 | |||
| JP2004044409A | 2004-02-12 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
Download PDF: