| 摘要 |
A heater for a liquid heating vessel comprises a stainless steel heater plate (200) and a steel-sheathed heating element (202) directly bonded to or formed on the underside of the heater plate (200). The heater plate has a thickness of between 0.2 and 0.4 mm. The element (202) comprises two raised and two lowered portions alternating around the circumference. The heater plate has corresponding raised and lowered portions. The central region of the plate (200) is a convex dome. |
