| 摘要 |
<p>PURPOSE:To contrive to reduce the manufacturing cost and to make the device compact by a method wherein the hot water in a hot water tank is forcibly discharged by a piston shifted by means of the water pressure of city water. CONSTITUTION:The supply of hot water to a dish washer 11 is performed by simultaneously opening a drain valve 8a and a feed water valve 7. Concretely, city water is supplied from the feed water valve 7 through a bung hole 1b into a hot water tank 1, resulting in shifting a piston at the position indicated with chain lines by means of the pressure of running water. The hot water in the hot water tank 1 is forced to pass through a drain port 1c' and the drain valve 8a and jetted from shower nozzles 12 and 12a. When the piston 5 reaches the position indicated with solid lines, the feed water valve 7 is closed and also the drain valve 8a is closed interlocking with the valve 7. When a feed water valve 7a and a drain valve 8 are simultaneously opened successively, the piston 5 forces the hot water out of the hot water tank 1 and shifts itself to the position indicated by the chain lines. At that instant, a switch 14 closes both the feed water valve 7a and the drain valve 8.</p> |
