Search International and National Patent Collections

1. (WO2018039937) PROPULSIVE DEVICE

Pub. No.:    WO/2018/039937    International Application No.:    PCT/CN2016/097396
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 31 01:59:59 CEST 2016
IPC: B63H 21/17
B63H 21/38
Applicants: POWERVISION TECH INC.
北京臻迪科技股份有限公司
Inventors: ZHENG, Weifeng
郑卫锋
LIU, Yang
刘洋
Title: PROPULSIVE DEVICE
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.