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    • 4. 发明专利
    • Shower head electric safety valve
    • GB2458638A
    • 2009-09-30
    • GB0805325
    • 2008-03-25
    • HARLOW TIMOTHY NEAL
    • HARLOW TIMOTHY NEAL
    • B05B1/18
    • A shower head has a water inlet passage 24, a spray outlet and a waste outlet passage 25. An electrical temperature sensor 16 and an electronic control system 27 controls an electromechanical valve 26 to open or close depending on predetermined upper and lower sensed operating temperature limits. The shower head may be capable of reacting very quickly to prevent the spray being under or over temperature, thus avoiding extremes of water temperature being experienced by a user of the shower. The valve 26 may include a valve disc 32 and stem 33 which is lifted by a solenoid 36 to open the spray outlet and close the waste outlet. When the solenoid is de-energised the valve member may be held by a latch 38. If the sensed flow temperature falls outside the predetermined limits the solenoid may be re-energised to release the latch 38 allowing the valve member to close the spray outlet 23 and divert water flow to waste.