| 摘要 |
The unit consists of two parts (1,2) of plastic. Joined by welding or gluing they form a chamber (3) for water and a self supporting two part tubular heater (4), the section to which this is secured being a two component injection moulding in which are formed access holes (5) for the heater. A cell (7) for the membrane (8) is formed between the container parts. Pushbutton switches (12,13) control the heater halves, selected by a rotary knob (14). A cover (6) clips into position. |
