PROBLEM TO BE SOLVED: To provide a simplified heat sterilization for a dispenser for drinkable water.SOLUTION: A dispenser has a system of piping for cooled water to supply cooled drinkable water and a system of piping for warmed water to supply warmed drinkable water, which relates to a dispenser with the two systems of piping connected to one water filling port through a three-opening valve having three openings. The dispenser has both the system of piping for cooled water and system of piping for warmed water filled with water through the three-opening valve, and characteristically circulates warmed water through both the systems of piping, utilizing the phenomenon of convection flow due to the difference in temperature for performing sterilization. The dispenser enables heat sterilization treatment to be achieved by a very simple structure of additionally employing the three-opening valve. Arrangement of making a spout for both cooled water cum warmed water enables the spout to be subjected to heat sterilization when it is used as a spout for cooled water, wherein unwanted virulent bacteria are likely to spread most.COPYRIGHT: (C)2011,JPO&INPIT【課題】飲料水用ディスペンサの簡易な加熱殺菌処理を提案する。【解決手段】第一の発明は、冷やされた飲料水を供給するための冷水用配管系統と、暖められた飲料水を供給するための温水用配管系統を有するディスペンサであって、両配管系統が三つの口を有する弁である三口弁によりひとつの注水口に接続されたディスペンサに関する。当ディスペンサは、三口弁により冷水用配管系統と温水用配管系統とに通水させ、水の温度差による対流現象を利用して温水を両配管系統で循環させることにより殺菌処理を行うことを特徴とする。ディスペンサは、三口弁を追加的に用いるだけの非常にシンプルな構造により加熱殺菌の処理を可能にした。注出口を冷水温水兼用とすることにより、もっとも雑菌が繁殖しやすい冷水用注出口の加熱殺菌を可能としている。【選択図】図3
