| 摘要 |
PURPOSE:To improve the quick refrigerating effect and power-saving effect and retentivity by using a motor capable of controlling its speed continuously at the rotating speed for driving a compressor, thereby reducing the size and noise of the compressor. CONSTITUTION:The actual temperature in a refrigerator detected by a temperature detector 1 and the analog value of a target temperature set by a target temperature setter 2 are converted by a voltage comparator 3 and a D/A converter 4 to digital values, input to a controller 5 to obtain a temperature deviation D. Here, when the deviation D is large, a compressor 7 is rotated at the maximum speed to increase the refrigerating capacity to shorten the time for arriving at the target temperature. When the deviation D is small, it is controlled to the speed in response to the deviation to obtain a suitable refrigerating capacity. |
