| 摘要 |
A flow control valve employing a step motor includes a valve housing having liquid inlet and outlet passageways, and a guide space which is communicated with the liquid inlet and outlet passageways, a spool which is connected to be movable up and down to the guide space of the valve housing so as to control an openness of the outlet passageway, a spool guide which is accommodated in an upper portion of the guide space so as to flow a refrigerant liquid downward by being moved together with the spool, an elastic support which elastically supports the spool guide in one direction, a seal member which is connected to a lower end portion of the valve housing, wrapping around a lower portion of the spool, so as to prevent a leakage of the refrigerant liquid, and a driving mechanism having a step motor to move the spool up and down, in which employing a dilatant liquid and a diaphram is eliminated and a proportional control is enabled, to thereby enhance the flow control performance and a durability of the valve.
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