| 摘要 |
<p>An electrode water boiler preferably but not exclusively for use at or near ambient atmospheric pressure for the humidification of air, comprising a boiler (10) having two or more electrodes (12) connected to an electrical supply source (14) between which current flows through the water in order to heat the water, the boiler also having a steam outlet (16), means (18) for feeding water into the boiler, means (20) for discharging water from the boiler, means (22) for sensing the current in one or more electrodes, and control means (24) responsive to the sensed electrode current arranged to initiate the feed water means (18) when the electrode current is below a predetermined lower value and to initiate the water discharge means (20) after the electrode current has risen above a predetermined higher value and, following the initiation of the feed water means (18) and the electrode current subsequently rising to a predetermined intermediate value between the said lower and higher values, to effect the introduction, into the boiler (10), of a fixed measured quantity of feed water.</p> |
