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Shape-memory diaphragm shutter valve for fluid flow interception that can also prevent icing
The purpose of the present invention is to provide a valve for gases, liquids or powdery materials with an extremely simple and low-cost structure. Opening and closing functions are generated by using shape-memory wires which move a diaphragm shutter element. The shape memory can reshape the diaphragm to lift away from the closed position then with the change of temperature or current, it can return back to the closed postion. This open/shut movement can be simple for on/off fluid requirements. It can also be rapid to effect displacement of a fluid. Particular positioning of shape-memory elements guarantees deicing functionality as resistence along the alloy can generate heat to prevent freezing.

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