Flow control valve
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United States of America Patent
Stats
-
Jul 31, 2012
Grant Date -
Apr 22, 2010
app pub date -
Jan 16, 2008
filing date -
Jan 19, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flow control valve controls the flow rate of heated water supplied from a boiler. The valve can normally/reversely turn and control the flow rate in a pipeline using first and second one-way motors, and stops power for one motor when the other motor is rotated. The valve includes a motor assembly including the first and second motors that have power transmission shafts which rotate in opposite directions, a gear assembly including first and second planetary gears that receive power from the motors and a sun gear disposed between and engaged with the planetary gears, a clutch structure between the first planetary gear and motor, and the second planetary gear and motor, that transmits or stops power, and a valve actuator including a shaft that reciprocates up/down by rotation of the sun gear and a valve unit fitted on the lower portion of the shaft that opens/closes the valve.
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