Title:
PROPULSIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/039937
Kind Code:
A1
Abstract:
A propulsive device, comprising an external rotor motor, a motor mounting frame (10), a front-end cover (40) with central opening, an output shaft (30), and a propeller blade (50). The motor fixing frame is a cavity with an opening on one end. The external rotor motor is fixedly mounted in the cavity. The front-end cover is connected to an opening end of the motor mounting frame to form a sealed cavity. One end of the output shaft is axially connected to an external rotor (21), and another end of the output shaft passes through the central opening of the front-end cover and is connected to the propeller blade. The connection between the output shaft and the central opening of the front-end cover is sealed. A gap is provided between the external rotor and an inner wall of the motor mounting frame. A gap provided in the center of the external rotor motor and the motor fixing frame, and is connected with the front-end cover and a rear-end cover (80) to form a sealed chamber. A liquid medium (60) is injected into the sealed chamber to seal the external rotor motor, prevent water from infiltrating and corroding a device, lubricate and cool the motor, and ensure stable operations of the propulsive device.
Inventors:
ZHENG WEIFENG (CN)
LIU YANG (CN)
LIU YANG (CN)
Application Number:
PCT/CN2016/097396
Publication Date:
March 08, 2018
Filing Date:
August 30, 2016
Export Citation:
Assignee:
POWERVISION TECH INC (CN)
International Classes:
B63H21/17; B63H21/38
Foreign References:
| CN105501423A | 2016-04-20 | |||
| CN104443323A | 2015-03-25 | |||
| CN102069902A | 2011-05-25 | |||
| US20010029133A1 | 2001-10-11 |
Attorney, Agent or Firm:
BEIJING YUANZHONG INTELLECTUAL PROPERTY AGENT LTD. (CN)
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