QUICK COOLING DEVICE OF VACUUM REFRIGERATOR

摘要

PURPOSE: A quick cooling device of vacuum refrigerator is provided to prevent oxygenation of stored food by keeping a food storage chamber vacuous. CONSTITUTION: A refrigerator includes a vacuum chamber(30); a vacuum pump(40); and a quick cooling device. The vacuum chamber is placed on a cold air passage and has a space to store food. The vacuum pump discharges air in the vacuum chamber to outside to keep vacuum in the vacuum chamber constant. The quick cooling device lowers temperature of the food stored in the vacuum chamber to appropriate temperature. The quick cooling device includes a cold air inflow hole(51); a damper(52); a temperature sensor(53); and a micro computer. The cold air inflow hole is formed on one side of the vacuum chamber for cold air in the cold air passage to flow into the vacuum chamber. The damper is rotatably placed on the cold air inflow hole to open and close the cold air inflow hole. The temperature sensor is placed in the vacuum chamber. The micro computer opens the damper for the cold air to flow into the vacuum chamber before the food placed in the vacuum chamber is stored in vacuum and closes the damper when temperature of the food measured by the temperature sensor is lower than set temperature.