AIR GUIDE RING, CENTRIFUGAL FAN, AND RANGE HOOD

WIPO Patent Application WO/2022/032875

A1

An air guide ring, a centrifugal fan, and a range hood having same. The air guide ring (100) is used for the centrifugal fan (1000), the air guide ring (100) is configured to be installed at an air inlet (310) of the centrifugal fan (1000), and the air guide ring (100) comprises: an annular air guide portion (10), wherein at least part of the annular air guide portion (10) is arranged in a necking-down manner in the air inlet direction, the inner edge of the annular air guide portion (10) is configured to extend into a volute (300) of the centrifugal fan (1000), the inner edge of the annular air guide portion (10) comprises a shallowest extension point (N) and a deepest extension point (M), and the deepest extension point (M) protrudes out of the shallowest extension point (N) in the air inlet direction; and an installation portion (20) which is arranged at the outer edge of the annular air guide portion (10). According to the centrifugal fan, the air guide ring has good back pressure resistance, such that the backflow phenomenon is weakened; and the air guide ring has a large air inlet quantity, such that the air supply effect of the centrifugal fan is ensured.

HE FUTIAN (CN)
CUI FUHAO (CN)
WANG YAODONG (CN)
BIAN LECHAO (CN)
LI ZHONGHUA (CN)
ZHANG YE (CN)
LI WEI (CN)
LIU HUACHUN (CN)
CHEN MAOWEI (CN)

PCT/CN2020/123723

February 17, 2022

October 26, 2020

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FOSHAN SHUNDE MIDEA WASHING APPLIANCES MFG CO LTD (CN)

F04D29/44

WO2016167456A1

2016-10-20

CN210152972U	2020-03-17
KR20170140899A	2017-12-22
CN203571979U	2014-04-30
TW200803710A	2008-01-01
CN205779918U	2016-12-07
CN208186652U	2018-12-04

CENFO INTELLECTUAL PROPERTY AGENCY (CN)

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