Title:
VACUUM CLEANER
Document Type and Number:
WIPO Patent Application WO/2021/008066
Kind Code:
A1
Abstract:
A vacuum cleaner, comprising a dust collecting part (1), a base part (18), a vacuum electric fan (15) and an air pressure alarm unit (21). The dust collecting part (1) comprises a tank (11) provided with a dust inlet (12), and a dust collecting container (14) and a high-efficiency filter (17) are installed in the tank (11). The dust collecting container (14) comprises a dust collecting bag (16) made of air-permeable materials. The high-efficiency filter (17) is cylindrical and sleeved outside of the dust collecting bag (16). An exhaust space is provided between the high-efficiency filter (17) and the inner wall surface of the tank (11). The dust inlet (12), the dust collecting bag (16), the high-efficiency filter (17) and the exhaust space communicate successively. The base part (18) comprises a casing adjacent to the bottom of the tank (11), and an exhaust port that communicates with the outside is provided on the casing. The vacuum electric fan (15) is used for introducing a dust-containing air flow from the dust inlet (12) into the dust collecting bag (16) and guiding air that enters the exhaust space to the exhaust port. The air pressure alarm unit (21) comprises an air pressure detection element (211) arranged on the tank (11) and used to detect the pressure in the exhaust space, and an alarm (212) used to send an alarm signal to the outside. The alarm (212) may determine whether to send an alarm signal to the outside on the basis of a detection result of the air pressure detection element (211).
Inventors:
HUANG JIAN (CN)
WANG XINHUA (CN)
WANG XINHUA (CN)
Application Number:
PCT/CN2019/122836
Publication Date:
January 21, 2021
Filing Date:
December 04, 2019
Export Citation:
Assignee:
SUZHOU PREMIER ELECTRICAL APPLIANCE CO LTD (CN)
International Classes:
A47L9/14; A47L5/12; A47L5/36
Foreign References:
| CN101744565A | 2010-06-23 | |||
| CN204502596U | 2015-07-29 | |||
| CN1864616A | 2006-11-22 | |||
| CN105996895A | 2016-10-12 | |||
| CN102160769A | 2011-08-24 | |||
| CN2548540Y | 2003-05-07 | |||
| JP2003144354A | 2003-05-20 | |||
| CN209269551U | 2019-08-20 |
Attorney, Agent or Firm:
SUZHOU JINHE INTELLECTUAL PROPERTY AGENCY (CN)
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