Title:
VACUUM CLEANER
Document Type and Number:
WIPO Patent Application WO/2022/077683
Kind Code:
A1
Abstract:
A vacuum cleaner (100), comprising a housing (110), a filter screen (120), and a spiral air guide (130). The spiral air guide (130) is provided in an exhaust channel and located on at least one side of an air inlet side and an air outlet side of the filter screen (120), and an airflow flowing through the exhaust channel forms a rotating airflow under the flow guide effect of the spiral air guide (130). When the vacuum cleaner (100) works, an airflow with impurities enters a dust chamber by means of an air inlet (111) and an air inlet channel (112), the impurities in the airflow are blocked by the filter screen (120) and left in the dust chamber, and the remaining tail gas is exhausted from the air outlet (113) by means of the exhaust channel. The airflow rotates under the effect of the spiral air guide (130). The airflow flowing through the exhaust channel is not directly blown to the filter screen (120). Therefore, the impurities in the airflow do not vertically collide with the filter screen (120), but have the transverse speed, such that the impurities are not easy to attach to the filter screen (120). Moreover, the rotating airflow can form disturbance, such that the impurities adsorbed on the surface of the filter screen (120) are rolled up, and the impurities can be further prevented from being accumulated on the surface of the filter screen (120). Therefore, when the vacuum cleaner (100) works, the filter screen (120) can be effectively prevented from being blocked.
Inventors:
DENG HAIQUAN (CN)
CHEN LONGLIN (CN)
CHEN LONGLIN (CN)
Application Number:
PCT/CN2020/128614
Publication Date:
April 21, 2022
Filing Date:
November 13, 2020
Export Citation:
Assignee:
SHENZHEN JUNENG VEHICLE TECH CO LTD (CN)
International Classes:
A47L9/16; A47L5/22; A47L9/20
Foreign References:
| CN204562002U | 2015-08-19 | |||
| CN203914786U | 2014-11-05 | |||
| CN107595203A | 2018-01-19 | |||
| CN110115545A | 2019-08-13 | |||
| CN201958792U | 2011-09-07 | |||
| US20190216281A1 | 2019-07-18 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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