| 摘要 |
PURPOSE: A non-power supply auto cycling valve is provided to automatically control an on-off cycle of a poppet valve by a shape of a driving cam which is driven by pneumatic pressure, and to reduce manufacturing costs of an oxygen generator. CONSTITUTION: A non-power supply auto cycling valve includes the following: a driving air cylinder(201) moving in a straight line; a movement converting device(202,203) changing a linear motion of the driving air cylinder to a rotational movement; a cam shaft(204) rotated by a movement conversion unit; a plurality of driving cams(204a-204d) installed on the cam shaft; a plurality of mechanical operating valves(404a-404d) installed on the driving cam; and a plurality of poppet valves(504a-504d) corresponding on the mechanical operating valves.
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