| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an efficient hot water supply device for reducing a temperature drop in wash water in a hot water supply line. SOLUTION: This hot water supply device has an instantaneously heating part 2 for instantaneously heating the wash water by taking the wash water in a heat reserving tank 1 for storing the water and reserving heat, the hot water supply line 3 connected to the instantaneously heating part 2, and water sump 4 in the hot water supply line 3 for temporarily retaining the wash water flowing to the hot water supply line 3. An air layer 5 is arranged in an upper part in the heat-reserving tank 1 and the sump 4 is arranged in the air layer 5.</p> |
