| 摘要 |
<p>A circuit for washing a water-feed system in automatic beverage vending machines is described in which water from a water-tank (2) is supplied via a water-feed conduit (4) which includes a feed pump (6) and a valve (8), into a cup (11). A branch tube is drawn from the upstream side of the water-feed pump (6) and is connected with the water-feed conduit (4) via a switch cock (21). The tip (23) of a hose (22) is connected to said branch tube. The tip (23) being allowed to be detachably connected to a nozzle (9) at that end of the water-feed conduit (4) facing said cup (11). By connecting said tip (23) to said nozzle (9) a closed circuit may be formed trough which a washing liquid supplied to said water-feed conduit (4) by the pump (6) is circulated by being recovered from the nozzle (9) and forcibly refluxed into the intake side of said pump (6) by said branch tube.</p> |
