(57) A refrigerator is provided. The refrigerator includes a storage space (2), capable
of maintaining a low-pressure state; a vacuum pump (3); an air evacuation path (4),
connected between the storage space (2) and the vacuum pump (3); a bypass (5), connected
to the air evacuation path (4), where when the vacuum pump (3) is in work, the bypass
(5) is closed, while when the vacuum pump (3) finishes work, the bypass (5) is opened
to transport external air to the air evacuation path (4); and an electromagnetic valve
(7), for opening or closing the bypass (5). According to the suggestion, after the
vacuum pump (3) finishes work, the electromagnetic valve (7) is powered on and opens
the bypass (5); and after a preset time, the electromagnetic valve (7) is powered
off, so that the bypass (5) is closed and remains closed until next time the vacuum
pump (3) finishes work.
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