| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary flow control valve allowing the size of a valve element to be kept small while securing the large flow of a fluid, and achieving reliable controllability of a flow rate and a rotation angle of the valve element. SOLUTION: The valve element 4 is notched in an axial direction. The valve element 4 is thereby miniaturized while securing the flow of the fluid to improve the rotation controllability of the valve element 4 due to a fall in moment of inertia, and the consequent flow controllability of the fluid. As a result, sufficient control responsiveness can be obtained even in a small actuator of small output or the like, and miniaturization and cost reduction of the rotary flow control valve itself can be achieved. Further, since the valve element 4 is rotated to allow notched planes 44, 45 to abut on a plane sidewall 21 of a valve chamber 2 to achieve mechanical detent, even when the actuator or the like misses the rotation angle of the valve element 4, an appropriate reference rotation angle can be detected on the basis of a mechanical detent position. COPYRIGHT: (C)2011,JPO&INPIT
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