| 摘要 |
PROBLEM TO BE SOLVED: To prevent air bubbles from being sucked into a pump, to perform a continuous operation and to prevent the constitution and ability of respective members from being limited. SOLUTION: In the inside of a hot water storage tank 58, a partition plate 86 for covering the suction port 84 of a suction pipe 72a is disposed on a side wall 82 to which the suction pipe 72a of a circulation pump is communicated and connected. By the partition fate 86, the inside of the hot water storage tank 58 is demarkated into a first area 88 where a heater 60 faces and a second area 90 where the suction port 84 faces and fine air bubbles generated on the surface of the heater 60 are prevented from being sucked through the suction pipe 72a into the circulation pump. The length dimension of the partition plate 86 is set to be longer than the length dimension of the heater 60 and shorter than the internal length dimension of the hot water storage tank 58. Thus, a communicating part for communicating the first area 88 and the second area 90 is formed on the end part side of the partition plate 86 away from the suction port 84. |
