| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid control device which can rotate a valve member supported in a cantilever state for opening and closing a fluid passage in a closing direction with low drive torque. SOLUTION: The fluid control device is provided with the valve member 16a and a wing 18. The valve member 16a is provided in the fluid passage 19, and opens and closes the fluid passage 19. The valve member 16a is supported in a cantilever state so that it can be rotated around a revolving axis P perpendicular to the direction of flow of the fluid which flows in the fluid passage 19. Then the valve member 16a is rotated in a direction X where it is pushed by the fluid, and opens the fluid passage 19. The lift generated by the flow of the fluid exerts a force in the closing direction (Y direction) on the valve member by the wing 18 provided to the valve member 16a. Since the lift generated by the flow of the fluid exerts a force in the closing direction on the valve member 16a, the valve member 16a which is supported in a cantilever state can be rotated in the closing direction with low drive torque. COPYRIGHT: (C)2008,JPO&INPIT
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