| 摘要 |
PROBLEM TO BE SOLVED: To start supply of hot water several seconds after a faucet is turned on or from a first time, regarding an electric instantaneous water heater. SOLUTION: A heating part is structured with a heating container making contact with water being manufactured, for example, in a short tube state by using copper or its alloy, the side opposite to a portion making contact with water forms a gathering of the surfaces of a cylinder or a regular hexagonal cylinder, an aluminum nitride sheet is laminated thereon as an insulating sheet, and further, the thin resistance sheet of an iron-chrome alloy, etc., is laminated as a heater wire, and the substances are fully adhered together by a heat insulation support tool, and the structure is charged with a heavy current from a source control circuit for heating. Furthermore, in addition to ordinary switch functioned through turning on water by turning on a faucet, a switch which is turned on by pushing it by hand is provided. By previously turning on the switch, a heating part is charged with a heavy-current is a short time of approximate 3-5 seconds for heating. When the faucet is turned on, cold water is set to a minimum level or zero, and hot water is caused to flow out immediately.
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