Title:
FAN COVER, FAN, AND CLEANING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/254463
Kind Code:
A1
Abstract:
A fan cover, a fan, and a cleaning device, the fan housing (40) being applied to a fan (100) having an impeller (50). The fan cover (40) is integrally formed and comprises a body; the interior of the body is hollow along the axial direction of the body, for use in receiving the impeller (50). The body comprises an air intake end (41) and an air discharge end (43), and an inner side wall (411) and outer side wall (412) of the air intake end (41) are provided at an interval so as to form a silencing chamber (42), the silencing chamber (42) being used for dampening vibration generated when the impeller (50) rotates, thereby reducing the noise of the fan (100). In the direction from the air intake end (41) to the air discharge end (43), the space between the inner side wall (411) of the air intake end (41) and the outer side wall (412) of the air intake end (41) gradually increases and then gradually decreases. In the described manner, the fan cover (40) can, after being applied to the fan (100), effectively improve the problem of noise for the fan (100).
Inventors:
GAO CHUNCHAO (CN)
Application Number:
PCT/CN2021/100765
Publication Date:
December 23, 2021
Filing Date:
June 18, 2021
Export Citation:
Assignee:
DREAME INNOVATION TECH SUZHOU CO LTD (CN)
International Classes:
F04D29/66; A47L5/22; A47L9/00; A47L11/24; B08B5/00; F04D25/08; H02K1/16; H02K5/16; H02K7/14
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