Fluid handling – Processes
Patent
1993-11-10
1995-08-15
Schwadron, Martin P.
Fluid handling
Processes
13762411, 137552, 1375527, 137557, 137486, 1374875, 137883, F17D 301, E03B 704
Patent
active
054410703
ABSTRACT:
A method and apparatus for managing water consumption and preventing damage to a fluid supply system in a house or structure is disclosed. The water management system includes a water management device coupled between provided fluid flow, pressure, and temperature sensors, and a shut-off valve and a drain valve. The device includes flow control means for opening the shut-off valve when flow is detected at any flow sensor and closing the shut-off valve when flow is undetected. The device also includes flow timers which have a selected operational period for each flow sensor and which close the shut-off valve if the operational period of a flow sensor is exceeded. The device also includes temperature timers for closing the shut-off valve and opening the drain valve when a temperature at or below a minimum temperature is detected by the temperature sensor for a selected maximum temperature detection time period. The device also includes pressure timers for closing the shut-off valve when a pressure at or below a minimum pressure is detected by the pressure sensor for a maximum pressure detection time period, and for periodically opening the shut-off valve to replenish the system when a pressure above a minimum pressure is detected for a minimum pressure detection time period. The device also includes counters to count how many times each flow sensor has detected flow.
REFERENCES:
patent: 2596691 (1952-05-01), Jackson
patent: 3506033 (1970-04-01), Haney
patent: 4180088 (1979-12-01), Mallet
patent: 4589435 (1986-05-01), Aldrich
patent: 4635668 (1987-01-01), Netter
patent: 4735231 (1988-04-01), Jacquet
patent: 5161563 (1992-11-01), Thompson
Lee Kevin L.
Schwadron Martin P.
Seth Sandeep
Smith Brian D.
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