| 摘要 |
PROBLEM TO BE SOLVED: To provide a water server that is excellent in sanitation and can make use of low temperature drinking water even during a sterilizing operation.SOLUTION: The water server is constituted of: a cold water tank 2; a raw water pumping tube 5 for communicating a raw water container 3 with the cold water tank 2; a pump 6; a buffer tank 7 arranged on the lateral side of the cold water tank 2; a buffer tank water-feed tube 8 for communicating an air layer of the buffer tank 7 with the cold water tank 2; a hot water tank 9 arranged below the buffer tank 7; a hot water tank water-feed tube 10 for communicating the buffer tank 7 with the hot water tank 9; a first three-way valve 13 and a second three-way valve 15 that are provided in the raw water pumping tube 5; first piping 14 for sterilization that communicates the first three-way valve 13 with the buffer tank 7; and second piping 16 for sterilization that communicates the second three-way valve 15 with the hot water tank 9. |
