Solenoid operated faucet

Details Solenoid operated faucet Solenoid operated faucet

F - Mech Eng,Light,Heat,Weapons

16

K

251/14

F16K 31/02 (2006.01) E03C 1/05 (2006.01)

Patent

CA 2017009

A faucet has a body with a hollow inner cavity and a spout which opens into the inner cavity. A valve assembly is located within the inner cavity to control the flow of water from a source into the spout. The valve assembly comprises a housing with an inlet chamber which opens into a ring-shaped channel, an outlet chamber having an opening centrally located with respect to the ring of the channel, and a diaphragm to selectively close the communication of the inlet and outlet chambers. A solenoid includes a plunger that is biased by a spring against the diaphragm and an electromagnetic coil to pull the plunger away from the diaphragm. A proximity sensor is included to detect the presence of an object adjacent the faucet and energize the coil. A safeguard alarm mechanism is provided to denergize the coil after a given interval if the object continues to be detected and thereafter periodically briefly energize the solenoid until the object is removed.

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