| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot-water storage type hot-water supply device stably generating high temperature hot water. <P>SOLUTION: This hot-water storage type hot-water supply device is equipped with: a hot-water storage tank 4 connected to a water intake pipe 6 and a hot-water supply pipe 5 and storing hot and cold water; a heating device 2 heating hot and cold water in the hot-water storage tank; a circulation circuit 16 circulatably connecting the hot-water storage tank 4 to the heating means 2; and a circulation pump 23 installed on the midway of the circulation circuit 16 and circulating hot and cold water. Hot and cold water in the hot-water storage tank is circulated to the heating means 2 by driving the circulation pump 23 through the circulation circuit 16 and heated, and returned to the hot-water storage tank 4, and the circulation pump 23 is of a positive displacement pump varying capacity. <P>COPYRIGHT: (C)2004,JPO |
