Compressor

A compressor comprising:

• a case comprising a discharge portion that is disposed at one side of the case and configured to discharge a refrigerant;
• a drive unit comprising:
• a stator coupled to an inner circumferential surface of the case and configured to generate a magnetic field, and
• a rotor accommodated in the stator and configured to be rotated based on the rotating magnetic field;
• a rotary shaft that extends through the rotor in a direction away from the discharge portion, the rotary shaft comprising an eccentric shaft that is arranged at one side of the rotary shaft and arranged thickly toward a part of the inner circumferential surface of the case;
• a compression unit comprising:
• an orbiting scroll coupled to the eccentric shaft and configured to perform an orbital movement based on rotation of the rotary shaft, and
• a fixed scroll engaged with the orbiting scroll, the fixed scroll being configured to receive and compress the refrigerant;
• a muffler coupled to the compression unit, the muffler being configured to guide the refrigerant to the discharge portion;
• and
• a balancer coupled to at least one of the drive unit or the rotary shaft, the balancer being configured to offset or distribute a load of the eccentric shaft,
• wherein the balancer comprises a shaft balancer that is rotatably coupled to the rotary shaft protruding from the compression unit in the direction away from the discharge portion.