| 摘要 |
PURPOSE: An electric boiler having a rapid heater is provided to improve thermal efficiency by rapidly heating water and circulating the water. CONSTITUTION: Hot-water circulation guiding pipes(3A,3B,3C) are installed in a water tank(1) successively, and are connected to introduction connecting pipes(4A,4B). Heating bars(Ha,Hb,Hc) are inserted into the hot-water circulation guiding pipes, respectively. Water is introduced into an introduction pipe(2), and circulates through the hot-water circulation guiding pipes.
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