| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hot water storage tank capable of uniformizing a temperature of high-temperature water inside of the hot water storage tank from an upper portion to a lower portion of the hot water storage tank.SOLUTION: A hot water storage tank 1 includes: a hot water storage tank body 11 having a hot water inflow port 21 and a hot water outflow port 22 at its lower portion; and a projecting space formation portion 12 disposed on a position above the hot water inflow port 21 at a position inside of the hot water storage tank body 11, and defining a part of the space in the hot water storage tank body 11 as a space 124 having the upward projecting shape. The projecting space formation portion 12 is disposed in several stages in a vertical direction, and a peripheral edge portion 126 of the projecting space formation portion 12 of one stage, is positioned in a region surrounded by a peripheral edge portion 126 of the other projecting space formation portion 12 adjacent to the projecting space formation portion 12 of one stage in the vertical direction, when observed in the vertical direction.</p> |
