| 摘要 |
<p>PURPOSE: An electric boiler is provided to guarantee a heat-retaining effect by the formation of an empty space of heat insulation effect between inner and outer walls of a water storing tank. CONSTITUTION: An electric boiler comprises a water storing tank(10), an insulation cover, a heater unit, and a controller. The water storing tank has a water inlet and a water outlet. The insulation cover blocks heat exchange with surrounding the outside of the water storing tank. The heater unit heats the water stored in the water storing tank. The controller controls the heater unit. The water storing tank has a wall body of a dual structure formed of inner and outer wall(21,23).</p> |
