Pressurized steam boilers and their control
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United States of America Patent
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Jul 31, 2007
Grant Date -
Apr 15, 2004
app pub date -
Apr 2, 2002
filing date -
Apr 2, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method of controlling the operation of a pressurised steam boiler (50) heated by a burner (20), which includes the steps of a) monitoring the level of water in the boiler (50), b) monitoring the pressure of steam in the boiler (50), c) monitoring the firing rate of the burner (20), and d) controlling the flow rate of water into the boiler (50) having regard to the signals resulting from a) and b) and, at least for some signal conditions, also having regard to signals resulting from c). The level of water is detected by a pair of capacitance probe assemblies (58A and 58B).
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