Air guide ring, centrifugal fan and range hood

• Main Authors: CHEN MAOWEI, ZHANG YE, CUI FUHAO, HE FUTIAN, LI WEI, LIU HUACHUN, LI ZHONGHUA, BIAN LECHAO, WANG YAODONG
• Format: Patent
• Language: Chinese; English
• Published: 22.02.2022
• Subjects: BLASTING; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; OTHER DOMESTIC STOVES OR RANGES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; RANGES; VENTILATING; WEAPONS

The invention discloses an air guide ring, a centrifugal fan and a range hood. The air guide ring is used for being mounted at an air inlet of the centrifugal fan, the air guide ring comprises an annular air guide part and a mounting part; the annular air guide part comprises an annular guide part, the annular guide part is arranged in a necking mode in the air inlet direction, and the longitudinal section of the annular guide part is two arc segments; the annular guide part comprises a first guide section and a second guide section which are distributed in the circumferential direction of the annular guide part, and the second guide section comprises a guide protruding part protruding out of the first guide section in the direction opposite to the air inlet direction; and the mounting part is arranged on the outer edge of the annular guide part. Therefore, the adaptability of the centrifugal fan to different air supply environments can be improved. 本发明公开一种导风圈、离心风机和抽油烟机，所述导风圈用于安装于离心风机的进风口，所述导风圈包括：环形导风部，所述环形导风