| 摘要 |
A thermally-sensitive control 1 for an electric heater (not shown) of a container such as an electric kettle or hot water jug includes switch means 18,20 adapted to disable the heater in response to operation of a snap-acting bimetallic actuator 28 consequent upon overheating of the element of the heater such as may occur for example when there is insufficient liquid in the container to cover the element. As an additional safety measure, the control 1 further comprises a slow acting creep bimetal 200 coupled to the switch means and operable to disable the heater upon serious overheating of the element consequent upon failure of the snap-acting actuator 28 in an overheat condition. <IMAGE> |
