Compressor

A compressor comprising:

• a driving shaft to which a swash plate rotating in a swash plate chamber inside the compressor is inclinedly combined;
• front and rear cylinder blocks respectively having shaft support holes to which the driving shaft is rotatably mounted, and a plurality of the cylinder bores formed at both sides of the swash plate chamber;
• a plurality of pistons mounted on the outer periphery of the swash plate in such a manner as to interpose a shoe between the piston and the swash plate, for performing a reciprocating motion inside the cylinder bores while cooperating with the rotation of the swash plate;
• front and rear housings coupled with both sides of the front and rear cylinder blocks and respectively having suction chambers and discharge chambers formed therein;
• valve units interposed between the front and rear cylinder blocks and the front and rear housings;
• and
• a main refrigerant supply channel having a flow channel formed inside the driving shaft and suction passageways respectively formed in the front and rear cylinder blocks for fluidically communicating the shaft support holes and the cylinder bores with each other, the flow channel having an inlet located at the swash plate chamber and outlets respectively located at the shaft support holes of the front and rear cylinder blocks, whereby refrigerant inhaled in to the swash plate chamber from the outside can be supplied into the cylinder bores in order during the rotation of the driving shaft,
• wherein an auxiliary refrigerant supply channel has a communication hole formed in at least one of the front and rear cylinder blocks and for fluidically communicating the swash plate chamber with the corresponding suction chamber of the suction chambers of the front and rear housings, and at least one slot formed in the driving shaft for fluidically communicating the outlets of the flow channel with the suction chambers.