VARIABLE VOLUME RECEIVER FOR FREEZING CYCLE OF WHICH DEGREE OF SUB-COOLING CAN BE ADJUSTED, FREEZING CYCLE COMPRISING SAME, AND METHOD FOR CONTROLLING SAME

摘要

The present invention can adjust the capacity of storing a coolant according to changes in driving conditions, such as outside air temperature or a load-side temperature, and can secure a proper degree of sub-cooling even when the driving conditions change, thereby providing the advantage of enabling optical driving regardless of changes in the outside air temperature or the load-side temperature. Also, the present invention stores the coolant in a bellows and controls so as to compress or expand the bellows thereby allowing easier adjustment of coolant storage capacity of a receiver. In addition, the present invention comprises a volume adjustment plate for compressing or expanding the bellows, and a reciprocal moving portion for raising or lowering the volume adjustment plate, which are configured in a gear structure and a motor, thereby allowing more stable movement of the volume adjustment plate.