| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To carry out cost reduction and space-saving in a storage type hot-water supply device having a plurality of hot-water storage tanks, by improving drainage work properties of the tanks and miniaturizing a hopper. <P>SOLUTION: The storage type hot-water supply device includes: the plurality of hot-water storage tanks 1, 2; a plurality of drainage pipes 6, 7 connected to bottom parts of the plurality of hot-water storage tanks 1, 2, respectively, to communicate with; and an expanded water drainage pipe 9 for discharging expanded water from a relief valve 8 provided at an upper part of the hot-water storage tank 2 on a hot-water supply side. The plurality of drainage pipes 6, 7 communicating with the bottom parts of the plurality of hot-water storage tanks 1, 2 and the expanded water drainage pipe 9 for discharging the expanded water from the relief valve 8 provided at the upper part of the hot-water storage tank 2 on the hot-water supply side are connected to one drainage valve 10 so as to drain water from a common drainage pipe 11 connected to the drainage valve 10. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
