| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To ensure space saving property and heat retaining property by arranging an oxygen enriching device in a front angular space formed by a rectangular parallelepiped outer casing and a hot water storage tank substantially inscribed therein. <P>SOLUTION: This water heater comprises the rectangular parallelepiped outer casing 4, the cylindrical hot water storage tank 1 set to be substantially inscribed in the casing 4, a water supply circuit 12 connected to the tank 1, a boiling-up circuit 3 allowing the lower part and the upper part of the tank 1 to communicate with each other to form a circulating passage, an additional heating heat exchanger 9 and a bath circuit 7 performing bath additional heating operation by use of hot water in the tank 1, and the oxygen enriching device 13 mixing high-concentration oxygen from the middle of the bath circuit 7. The oxygen enriching device 13 is arranged in the front angular space formed by the outer casing 4 and the cylindrical hot water storage tank 1 so as to oppose to an air window 18 provided on the front surface of the outer casing 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
