| 摘要 |
A hot water tank is provided to raise quickly the temperature of water for hot water while preventing lowering of the temperature inside the hot-water tank by drawing in preheated water, passed through a preheating heater, into a hot water heater and a main body of a hot water tank. A hot water tank comprises a main body(10) in which a circulation motor(12) is equipped to the lower one side; an inlet port(31) of a hot water heating part(30) by a first transfer pipe connected to an outlet(22); a preheating part(20) formed in order to supply hot water into inlet of the lower part of the main body; and a hot water heating part(30) which after water, passed through the preheating part, is drawn in the inlet and then is heated and then is supplied into a drain port(32) installed onto the lower part. The heated water is drained into a heating facility through a heating pipe(50). |
