| 摘要 |
PURPOSE:To obtain an economical water heating apparatus in which only a necessary amount is heated by arranging a water conduit which surrounds the outer periphery of the heater on the bottom of a hot-mater tank and has an exit port in the upper part and forming a throttle part at a part of the water conduit. CONSTITUTION:A water conduit 5 is arranged which is formed of a heat insulating material and is so constituted that a wide heating part 7 surrounds the outer periphery of a heater 2 arranged in the lower part of a hot-water tank 1, and a cold water inlet 3 is formed under the heating part 7, and upper the heater 2, a throttle part 6 is formed, and an exit 4 is formed at the upper end. |
