| 摘要 |
<p>An electrical appliance, which is particularly but not exclusively suitable for domestic heating or cooking of food, e.g. a high-speed cooker, comprises a vessel (1) for containing material to be heated. The vessel (1) incorporates, preferably at its base, an electrically heating assembly (5) having electrical terminals (9, 11) projecting therefrom. When the vessel (1) is inserted in a predetermined orientation in a cavity (6) in a base unit (7), the terminals (9, 11) are electrically connected to corresponding terminals (10) in the base unit, by manipulation of a rotary switch (14), for energisation of the heating assembly via suitable electrical control circuitry in the base unit (7). The base terminals (10) are located within respective spaced recesses (17) in the switch (14) for rotation therewith between an inoperative position in which contact between respective terminals (9, 11, 10) is inhibited but respective ones of the vessel terminals (9, 11) can enter the respective recesses (17) on correct insertion of the vessel (1) into the cavity (6), and an operative position which, if reached after the inoperative position with the vessel (1) correctly inserted, establishes electrical contact between respective terminals (9, 11, 10). </p> |
