A method for constructing a through flow heater for fluids has an aluminium tube containing a resistance heating coil and insulating heat conductive packing around which is wound a spiral tube carrying the fluid

摘要

The heating system for heating water in a drinks machine has an aluminium tube (3) with a spiral resistance heating element (4) embedded in magnesium oxide (5) with end connections (4a) and a spiral wound fluid tube (6) soldered (7) around the outside through which the fluid is passed to be heated.