| 摘要 |
In general, clean cold water can be made available in a household by means of either an expensive refrigerator with a cold water dispenser or a separate cooler and bulky, replaceable water bottles. A simple solution to the problem involves a carbon filter and cooling reservoir combination for mounting in a refrigerator, a pipe system containing a faucet for dispensing cold water and returning water to the filter, and a pump/timer combination for periodically recycling the water in the pipe system through the filter, whereby cold water is always virtually instantaneously available at the faucet.
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