| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of noise from a compressor during switching, to suppress useless electric input and excessive cooling, and to perform highly-efficient cooling, in a refrigerator to effect cooling by alternately switching a plurality of evaporators. SOLUTION: A refrigerating chamber evaporator 32 and a freezing chamber evaporator 38 are connected in parallel to a number of revolutions variable compressor 44 and cooling of a refrigerating chamber and cooling of a freezing chamber are alternately switched by valves 54 and 60. In a so formed refrigerator, the initial number of revolutions after switching of the compressor 44 is decided before switching of the valve. When the initial number of revolutions is lower than the present number of revolutions of the compressor, the valve is switched after reduction to the initial number of revolutions, and when the initial number of revolutions is higher than the present number of revolutions of the compressor, switching is effected with the present number of revolutions left as it is and after switching, the increase speed of the number of revolutions is decreased to a value lower than that during deceleration and the number of revolutions is increased to the initial number of revolutions.
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