| 摘要 |
A water dispenser is provided which is hygienic and which enables a user to use low-temperature drinking water even during sterilization operation. The water dispenser includes a cold water tank (2), a raw water pumping pipe (5) through which a raw water container (3) communicates with the cold water tank (2), a pump (6) provided at an intermediate portion of the raw water pumping pipe (5), a buffer tank (7) provided beside the cold water tank (2), a buffer tank supply pipe (8) through which the air layer in the buffer tank (7) communicates with the cold water tank (2), a hot water tank (9) provided below the buffer tank (7), a hot water tank supply pipe (10) through which the buffer tank (7) communicates with the hot water tank (9), first and second three way valves (13 and 15) provided in the raw water pumping pipe (5), a first sterilization pipe (14) through which the first three-way valve (13) communicates with the buffer tank (7), and a second sterilization pipe (16) through which the second three-way valve (15) communicates with the hot water tank (9). |
