Patent ID: 7984617
Filing Date: 2011-07-26
Classification: F04C,F25B,F25D,Y02B

Abstract:
1. A method for controlling an operation of a compressor of a refrigerator, the method comprising: varying a compression capacity of a compressor installed in a refrigerator, wherein the compression capacity of the compressor increases when the compressor is rotated in a first rotation direction with respect to a rotational axis of the compressor and decreases when the compressor is rotated in a second rotation direction that is opposite to the first rotation direction, and wherein varying the compression capacity comprises: wherein varying the compression capacity further comprises: performing a defrosting operation when a temperature inside the refrigerator and a pre-set defrosting temperature are identical; when the defrosting operation is terminated, rotating the compressor in the first rotation direction, stopping the compressor, and rotating the compressor in the second rotation direction at pre-set time periods; when an operation mode of the refrigerator is selected by a user, selecting the rotation direction of the compressor according to an amount of cooling air supply corresponding to the selected operation mode, and controlling a rotation speed of the compressor in the selected rotation direction by varying an operation frequency of the compressor based on a temperature inside the refrigerator; when the operation mode of the refrigerator selected by the user is a power saving operation mode, rotating the compressor in the second rotation direction, and when the temperature inside the refrigerator is higher than a first pre-set temperature, rotating the compressor in the first rotation direction; and when the operation mode of the refrigerator selected by the user is a standard operation mode, rotating the compressor in the first rotation direction, and when the temperature inside the refrigerator reaches a second pre-set temperature, rotating the compressor in the second rotation direction.