| 摘要 |
<p>PURPOSE:To improve a heat loss of an oil burning hot water boiler and to provide a small-sized boiler. CONSTITUTION:Within a main body 1 provided with an air supplying an air discharging cylinder 2 and a water feeding port 3 at its upper part are installed two boilers 4A, 4B, two hot water storing tanks 5A, 5B corresponding to these two boilers 4A, 4B, and two hot water pumps 6A, 6B for use in circulating hot water within the two hot water storing tanks 5A, 5B and the like. Temperatures of hot water within the hot water storing tanks 5A, 5B can be controlled to show the same value (in response to a state of load) as required or the temperature at 5A can be increased. A thermal insulating material 10 for use in preventing a thermal loss of hot water is provided and the hot water storing tank 5A is installed inside the hot water storing tank 5B to make a double-structure. Under such a double structure, heat leaving from the hot water storing tank 5A is absorbed into the hot water in the hot water storing tank 5B, resulting in that an entire heat loss can be reduced. Further, since it is not necessary to provide the thermal insulating material at the hot water storing tank 5A, the size of the hot water storing tank can be made small.</p> |
