Activation flow switch for tankless water heaters
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United States of America Patent
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-
Apr 22, 2003
Grant Date -
Jul 25, 2002
app pub date -
Jan 24, 2001
filing date -
Jan 24, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A flow switch for use in tankless water heaters. The present invention is an activation flow switch for tankless water heaters. More specifically, the flow switch is comprised of polypropylene balls through which is inserted a magnet. The balls have a specific gravity less than water and are therefore buoyant. When flow through the water pipe commences, the flow switch raises in the flow switch cylinder thereby bringing the magnet into operative connection with a relay switch. The relay switch, once activated, signals to the water heater that hot water is required which in turn activates the heating elements of the water heater. Once the flow in the pipe subsides, the flow switch returns to its inactive position, thereby deactivating the water heater.
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