Valves and valve actuation – With material guide or restrictor – Baffle or zigzag flow restrictor
Patent
1993-04-22
1996-01-30
Rivell, John
Valves and valve actuation
With material guide or restrictor
Baffle or zigzag flow restrictor
251 3003, 138 42, 138 45, F16K 4714, F16K 3140, F16K 31385
Patent
active
054875285
ABSTRACT:
A solenoid controlled, pilot actuated inlet water valve apparatus has an inlet connected to a residential water source pipe and an outlet connected to an appliance such as a dishwasher or clothes washing machine. The inlet water valve contains a flow control, a noise suppressor, a pilot valve controlled by an electrically operated armature, and a main valve composed of a diaphragm, diaphragm insert, valving surface and bleed passage. The noise suppressor is located downstream of the flow control and reduces water velocity by first radially dispersing incoming water to the periphery of the noise suppressor in a dispersion chamber. Next, water passes through passage holes located around the periphery of the noise suppressor into a recombining chamber with it is directed toward a central exit port. When water moves in the recombining chamber toward the central exit port, the water converges from different directions further reducing water velocity and noise caused by cavitation.
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N. Mirizzi et al., Predictions of Noise Aerodynamically Generated by Control Valves, ISA Transactions, vol. 16, No. 6, pp. 19-20 (1977).
William Blake, Mechanics of Flow-Induced Sound & Vibration, Applied Mathematics and Mechanics, vol. 17, pp. 712-717 (1986).
Emerson Electric Co.
Rivell John
Waldkoetter Eric R.
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