B - Operations – Transporting – 67 – D
Patent
B - Operations, Transporting
67
D
B67D 1/08 (2006.01) B67D 7/32 (2010.01) G01F 15/00 (2006.01) G01M 3/28 (2006.01) G05D 7/06 (2006.01)
Patent
CA 2055181
Abstract of the Disclosure An automatic fluid-flow control system is provided for controlling the quantity of fluid allowed to flow uninterrupted through a conduit. It is particularly useful in controlling potentially damaging floods caused by breakage in a branch plumbing line used to supply water to beverage dispensing appliances, ice making machines and similar devices which repeatedly consume limited quantities of water in relatively short flow cycles. The fluid-flow control system includes a flow meter which emits a signal containing information about the flow of fluid and also indicating when fluid is flowing and when it is not. The preferred metering device emits pulses at a rate proportional to the flow rate. A counter accumulates a pulse count during each period of fluid flow. A separate pulse sensing network senses the beginning and end of each period of fluid flow and disables and initializes the counter whenever fluid is not flowing. The accumulated pulse count in the counter is proportional to the quantity of fluid passing through the meter. The counter is set to close a solenoid valve whenever a predetermined maximum pulse count is exceeded. A back-up protective circuit is also provided, employing a timer to measure the time interval of each fluid-flow cycle. When the time interval is exceeded, the timer closes the solenoid valve. In addition to the flood protector mode of operation, a configuration employing the same circuit as a dispenser control device is also disclosed.
Engler Christopher J.
Johnson Michael W.
Boyd Coffee Company
Fetherstonhaugh & Co.
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