| 摘要 |
PURPOSE: A serial-connected electric boiler is provided to heat fluid to desired temperature quickly by connecting three tanks filled with heating materials and connected in series. CONSTITUTION: A serial-connected electric boiler comprises an induction heater and first, second, and third tanks(22, 22a, 22b). Heating materials are filled in a third heating pipe installed in the outer side of the induction heater. The heating materials are composed 60 to 90wt.% of sand and 10 to 40wt.% of magnesium. The water outlet port(24) of a first tank and the water inlet port(13a) of the second tank are connected in series by a first connection pipe(30). The water outlet port(24a) of the second tank is connected to the water inlet port(13b) in series by a second connection pipe(31). |
