| 摘要 |
A method and apparatus for automatically and sequentially distilling batches of water having substantially equal volumes in a plurality of distillation cycles, one batch in each cycle. During each cycle, water is admitted to a boiler tank for a fixed interval of time to form a batch in the tank. The batch of water in the tank is then vigorously boiled while venting the tank through a pipe to the atmosphere. The vigorous boiling is terminated when the temperature within the vent pipe reaches the boiling point of pure water. Upon termination of the vigorous boiling phase, a gentle boiling phase is initiated, the vent pipe is closed, and vapor in the tank is admitted to a condenser. The condenser condenses the vapor to obtain distilled water which is collected in a collection device. The gentle boiling phase continues until the level of water in the tank recedes to the level of a heater in the tank. At this time the heater is turned off and a drain valve opened to drain the water and residue remaining in the tank. After the tank is drained, water is again admitted to the tank for a fixed interval of time while the drain is kept open, thus flushing residues from the tank. After the flush water has drained from the tank, the drain is closed and a new distillation cycle is initiated.
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