| abstract |
A heater unit(40) is installed on the nozzle(12) and is connected to it to conduct thermally. The nozzle and connecting piece(14,16) are made of a metal material with good heat conducting capability, such as aluminium, brass, or copper. The heater has an annular housing which enclosed the nozzle, forming a metallically heat conducting contact. The heater has a temperature sensor and temperature regulator. The nozzle and connecting piece may be formed in one piece or as two components in heat conducting contact. |