| 摘要 |
<p>The apparatus i.e. electric boiler (1) has a case (2) defining an enclosure containing liquid and provided with an upper opening. A cover (4) closes the upper opening of the enclosure and includes an upper wall (26) provided with a filler opening i.e. annular slot (29), that communicates with the enclosure. The upper wall includes a dome (28) extending from an apex (28a) towards an annular base (28b). A peripheral edge (27) is elevated with respect to the base. The opening is arranged between the base and peripheral edge.</p> |
