发明名称 |
Valve Actuator Having Synchronous Motor Having Plastic Bushings |
摘要 |
A synchronous motor and a valve having a valve actuator and valve assembly is provided. The valve actuator includes the synchronous motor. The synchronous motor utilizes a magnetic coil, a stator and a rotor to generate rotational movement to drive the valve member for the valve assembly. The valve has a normal state in which the valve is maintained when power is not supplied to the motor. The valve has a non-normal actuated state when power is supplied to the motor. The motor is stalled in the non-normal state to maintain the valve in that state. The rotor includes a rotor shaft that passes through a magnetic hub of the stator. The rotor shaft is supported by a plurality of plastic and/or nylon bearings to prevent corrosion therebetween when the rotor shaft and bearings remain in a substantially fixed orientation for an extended period of time. |
申请公布号 |
US2011240893(A1) |
申请公布日期 |
2011.10.06 |
申请号 |
US20100753181 |
申请日期 |
2010.04.02 |
申请人 |
SCHNEIDER ELECTRIC BUILDINGS, LLC |
发明人 |
WINDGASSEN WILLIAM P. |
分类号 |
F16K31/04;F16K51/00;H02K21/24 |
主分类号 |
F16K31/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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