Patent ID: 6640047
Filing Date: 2003-10-28
Classification: F24D,F24H

Abstract:
A hybrid water heater for supplying hot water to a hot-water supply equipment, comprising:a hot water tank; an electrical heating unit for heating water to be stored in the hot water tank; and a combustion heating unit for heating water to be stored in the hot water tank, the combustion heating unit including a combustor for heating water by combustion operation, and a chamber in which water is heated by the combustion operation of the combustor, the chamber having a first water port at an upper side, through which heated water flows from the chamber into an upper side in the hot water tank, and having a second water port at a lower side, through which water at a lower side in the hot water tank flows into the chamber, wherein the hot water tank and the chamber are disposed to communicate with each other through the first water port and the second water port, in such a manner that the water heated in the chamber is stored in the hot water tank at the upper side using natural convection due to a temperature increase of the water in the chamber.