| 摘要 |
PURPOSE:To contrive to miniaturize the whole hot water storage tank unit and enable to apply necessary heat insulating means onto a smaller portion by a structure wherein a heat exchanger, which is formed outside a cylindrical tank, is insertedly fixed with a gap held by heat insulating spacers and heat insulator is formed around the tank including the heat exchanger. CONSTITUTION:A heat exchanger 2 is made in a hollow cylindrical form having two flow paths, which thermally contact with each other so as to perform the heat exchange between two fluids, and insertedly fixed by fittings welded onto a tank 1 with a certain fixed gas 6 between the outside of the tank 1 and the heat exchanger 2 by spacers 3, which are made of heat insulating material such as rubber or the like and pasted partially onto the outside of the tank 1. A heat insulator 4 is so constituted as to be formed around the tank 1 including the heat exchanger 2 en bloc. |
