| 摘要 |
<p>A cathode of a scale inhibiting means can be formed of a porous conductive material and can be placed so as to separate outer air and water in an electrolysis tank. Accordingly, dissolution speed of oxygen can be drastically increased and a generation of combustible hydrogen gas in accordance with water electrolysis can be suppressed while scale sticking to a heat transfer passage can be reliably prevented. A water heater can be provided with such a scale inhibiting means which includes the electrolysis tank, an anode and a cathode arranged in the tank in an opposed manner and a power source to apply voltage between the anode and the cathode and which deposits scale ingredients dissolved in water in the electrolysis tank, a heat transfer passage which is disposed at the downstream side of the scale inhibiting means to guide the water, and a heat source which heats the water at the heat transfer passage owing to heat exchange, and the cathode of the scale inhibiting means can be formed of said porous conductive material being arranged so as to separate the outer air and the water.</p> |
