| 摘要 |
PURPOSE:To reduce the space of piping and the radiation therefrom, by connecting a heat source and a hot water supplying cock by a piping route constituted by feeding and returning pipes of a pump, and by connecting the feeding and returning pipes on the downstream side of the pump by a bypass channel through the intermediary of a selector valve. CONSTITUTION:When hot water supplying cocks 16 and 17 are closed and the temperature of piping routes 14 and 15 is low, a thermostat 24 operates and thereby hot water in a boiler 12 is made to flow through the piping routes 14 and 15 as shown by a solid-line arrow by a circulation pump 18. When the temperature of the piping routes 14 and 15 rises, the pump 18 is stopped by the thermostat 24. Next, when the hot water supplying cocks 16 and 17 are opened, hot water is discharged from the hot water supplying cocks 16 and 17 through a feeding pipe 14, since a selector valve 19 is positioned on the side of the piping routes. Thereby flow meters 21 and 22 are operated, the route selector valve 19 is switched over to a bypass channel 20, and hot water is supplied simultaneously from the feeding pipe 14 and a returning pipe 15 as shown by a white arrow. Thus, the space of piping and the radiation therefrom are reduced, and the circulation pump can be utilized for applying pressure. |
