US 11,719,256 B2
Centrifugal fan and terminal
Jianliang Wang, Dongguan (CN); Liujun Zou, Shenzhen (CN); Jian Shi, Shanghai (CN); and Zhiguo Zhang, Wuhan (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Aug. 20, 2021, as Appl. No. 17/408,278.
Application 17/408,278 is a continuation of application No. PCT/CN2019/104770, filed on Sep. 6, 2019.
Claims priority of application No. 201910127434.0 (CN), filed on Feb. 20, 2019.
Prior Publication US 2021/0388849 A1, Dec. 16, 2021
Int. Cl. F01D 1/02 (2006.01); F04D 29/44 (2006.01); F04D 17/16 (2006.01); F04D 29/42 (2006.01); G06F 1/20 (2006.01)
CPC F04D 29/441 (2013.01) [F04D 17/16 (2013.01); F04D 29/4226 (2013.01); G06F 1/203 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A centrifugal fan, comprising:
a housing;
an impeller disposed in the housing;
an air inlet configured to cooperates with the impeller, wherein the air inlet is disposed on the housing;
a flow channel configured to cooperate with the impeller, wherein the flow channel is disposed in the housing, and wherein the flow channel comprises a pressurization area;
an air baffle ring configured to prevent air in the pressurization area from leaking through the air inlet, wherein the air baffle ring is disposed in the housing around a part of the air inlet, and wherein the air baffle ring protrudes toward one side of the impeller; and
a volute tongue disposed in the housing,
wherein a first end of the air baffle ring is located on one side on which a connection line between a center of the volute tongue and a center of the impeller is away from the pressurization area.