Noise-preventing structure for mixed water cocks

Details Noise-preventing structure for mixed water cocks Noise-preventing structure for mixed water cocks

G - Physics

10

K

181/11, 137/118

G10K 11/00 (2006.01)

Patent

CA 1231646

ABSTRACT OF THE DISCLOSURE The mixer tap has hot and cold water inlets, a water outlet, a valve mechanism controlling the relative quantity of hot and cold water supplied from the water inlets to the water outlet, and a noise attenuator for reducing the noise which could otherwise be generated upon sudden opening of the valve mecha- nism. The valve mechanism comprises a fixed plate valve and a movable plate valve arranged in opposition to one another. The movable plate valve is slidable relative to the fixed plate valve by a valve operating mechanism and has therein a water through flow chamber with a water inlet region at one end and a water outlet region at the other end. The noise attenuator comprises a sound attenuating member of permeable metal construction and a support member which holds the attenuating member in firm contact with a wall portion of the chamber in the inlet region thereof such that water entering the chamber impinges upon or skims along the attenuating member. The movable plate valve also has an escape groove which allows restricted escape of cold water to the chamber when the cold water inlet is fully closed and the hot water inlet is fully open.

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