Title:
ELECTRIC AIR PUMP
Document Type and Number:
WIPO Patent Application WO/2021/073514
Kind Code:
A1
Abstract:
An electric air pump, comprising a pump casing (10), a motor (20) provided in the pump casing (10), an impeller (30) driven by the motor (20), and a controller (40) connected to the motor (20). The motor (20) is a brushless direct current motor, and comprises a rotating shaft. The impeller (30) is fixed on the rotating shaft. The pump casing (10) is sequentially provided with a first chamber (11), a second chamber (12), and a third chamber (13) along the axial direction of the motor (20). The first chamber (11) and the third chamber (13) are respectively located on both axial ends of the second chamber (12). The controller (40) is accommodated in the first chamber (11). The motor (20) is provided in the second chamber (12). The impeller is provided in the third chamber (13). The pump casing (10) is further provided with an air inlet portion (18) adjacent to the first chamber (11), an exhaust portion (19) adjacent to and in communication with the third chamber (13), and a flow passage (100) of which both ends are respectively in communication with the air inlet portion (18) and the third chamber (13). The electric air pump is driven by the brushless motor, and has fast response speed, long service life, low noise, and high efficiency.
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Inventors:
REN YANPING (CN)
QU TAO (CN)
ZHANG YUANCHUN (CN)
TAO XIAOHE (CN)
DU CHENGSHUN (CN)
CHEN ANBANG (CN)
QIN RUIFENG (CN)
QU TAO (CN)
ZHANG YUANCHUN (CN)
TAO XIAOHE (CN)
DU CHENGSHUN (CN)
CHEN ANBANG (CN)
QIN RUIFENG (CN)
Application Number:
PCT/CN2020/120765
Publication Date:
April 22, 2021
Filing Date:
October 14, 2020
Export Citation:
Assignee:
JOHNSON ELECTRIC GUANGDONG CO LTD (CN)
International Classes:
F04D25/08; F04D29/58
Foreign References:
| EP0163126A1 | 1985-12-04 | |||
| CN202732365U | 2013-02-13 | |||
| CN2177827Y | 1994-09-21 | |||
| CN205533340U | 2016-08-31 | |||
| CN206468590U | 2017-09-05 | |||
| GB2416806A | 2006-02-08 |
Attorney, Agent or Firm:
SHINY INTELLECTUAL PROPERTY FIRM (CN)
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