FAN IMPELLER AND FAN USING FAN IMPELLER

WIPO Patent Application WO/2017/133370

A1

Provided is a fan impeller, comprising blades (2) and further comprising a rear disc (1), wherein blade bottoms (2) are installed on the surface of the rear disc (1) and are arranged sequentially along a peripheral direction of the rear disc; an outer edge (21) of the blade (2) is an air-outlet edge, and an included angle α between a projection (21a) of the outer edge (21) on the outer circumference of the rear wheel disc and the outer circumference normal (1a) of the rear disc (1) ranges from -60° to 60°; an inner edge (22) of the blade (2) is an air-inlet edge, and an included angle β between a projection (22a) of the inner edge (22) on the outer circumference of the rear disc and the outer circumference normal (1a) of the rear disc (1) ranges from 20° to 70°; an included angle θ between a line (L1) connecting a bottom of the outer edge (21) and the center of the rear disc (1) and a line (L2) connecting a bottom of the inner edge (22) and the center of the rear disc (1) ranges from 10° to 65°; and a first vertical height (h1) of an apex (P1) of the outer edge (21) relative to the rear disc (1) is less than a second vertical height (h2) of an apex (P2) of the inner edge (22) relative to the rear disc (1). The fan impeller features good aerodynamic performance, high fan efficiency and wind pressure, generating a high negative pressure gradient.

JP6135702	Blower module
JP2940301	CENTRIFUGAL FAN

LIANG XUEFEI (CN)
LIU YI (CN)
ZHOU JIAJIE (CN)
MAO ZHONGQUN (CN)
ZHU YONGDING (CN)
LIU GE (CN)

PCT/CN2017/000133

August 10, 2017

January 24, 2017

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NINGBO FOTILE KITCHEN WARE CO (CN)

F04D29/30

CN202350157U	2012-07-25
CN204082659U	2015-01-07
CN203655701U	2014-06-18
CN104165158A	2014-11-26
US5328332A	1994-07-12

NINGBO CHANNEL PATENT ATTORNEYS OFFICE (CN)

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