Linear compressor

摘要

The present invention relates to a linear compressor, and more particularly, to a linear compressor which supplies a necessary cooling capacity through a natural cooling capacity modulation and a forcible cooling capacity modulation, and a cooling system using the same. The linear compressor according to the present invention includes a compression space into which refrigerant is sucked, a movable member which linearly reciprocates to compress the refrigerant sucked into the compression space, one or more springs which are installed to elastically support the movable member in a motion direction of the movable member, a motor unit which includes a motor and a capacitor connected in series to the motor so as to make the movable member linearly reciprocate, and a motor control unit which performs a natural cooling capacity modulation according to a load by reciprocation of the movable member.

主权项

1. A linear compressor, comprising:
a compression space into which refrigerant is sucked; a movable member which linearly reciprocates to compress the refrigerant sucked into the compression space; one or more springs which are installed to elastically support the movable member in a motion direction of the movable member; a motor unit which includes a motor and a capacitor connected in series to the motor so as to make the movable member linearly reciprocate; and a motor control unit which performs a natural cooling capacity modulation according to a load by reciprocation of the movable member, wherein the motor control unit performs a forcible cooling capacity modulation by varying an amplitude or frequency of a voltage applied to the motor unit, and wherein the motor control unit performs the forcible cooling capacity modulation by varying the amplitude or frequency of the voltage applied to the motor unit into plural values, and then performs the natural cooling capacity modulation by maintaining the amplitude or frequency of the varied voltage to be constant, and applying the maintained voltage to the motor unit.