Compressor

Abstract

Disclosed is a compressor in which, in correspondence to a point in time that the piston is reached to a bottom dead center to start compression of the refrigerant, the outlet of the main refrigerant suction channel is closed by an inner wall of the cylinder block so that the inlet of the suction passageway of the cylinder block and the outlet of the main refrigerant suction channel of the drive shaft are discommunicated.

1 . A compressor including:
 a cylinder block;   a swash plate rotating in a swash plate chamber formed in the inside of the cylinder block and integrally coupled to a drive shaft;   pistons respectively received in the insides of a plurality of cylinder bores annularly arranged at a periphery of the drive shaft and reciprocating by the rotation of the swash plate;   a main refrigerant suction channel formed inside of the drive shaft; and   a plurality of suction passageways formed in the cylinder block so as to sequentially communicate the main refrigerant suction channel and the respective cylinder bores where refrigerant inhaled into the main refrigerant channel is inhaled according to the rotation of the drive shaft;   wherein, in correspondence to a point in time that one of the pistons is reached to a bottom dead center to start compression of the refrigerant, the outlet of the main refrigerant suction channel is closed by an inner wall of the cylinder block so that the inlet of the suction passageway of the cylinder block and the outlet of the main refrigerant suction channel of the drive shaft are discommunicated.   
   
   
       2 . The compressor as set forth in  claim 1 , wherein an end of the outlet of the main refrigerant suction channel is located on the inner wall of the cylinder block between one suction passageway corresponding to the piston and another adjacent suction passageway in reference with the rotation direction of the drive shaft at the point in time that the piston is reached to the bottom dead center. 
   
   
       3 . The compressor as set forth in  claim 2 , wherein an end of the outlet of the main refrigerant suction channel corresponds to an end portion of the suction passageway of the cylinder block in the rotation direction of the drive shaft at the point in time that the piston is reached to the bottom dead center. 
   
   
       4 . The compressor as set forth in  claim 2 , wherein a sectional center-line of the suction passageway formed in the cylinder block is inclined by a predetermined angle in the rotation direction of the drive shaft with respect to a plane including a center-line of the cylinder bore and an axial center-line of the drive shaft. 
   
   
       5 . The compressor as set forth in  claim 1 , wherein the piston is a double headed piston, the cylinder bore is formed in plural at both sides of the swash plate chamber,
 the outlet of the main refrigerant suction channel of the drive shaft is formed at least one in every front and rear so as to correspond to the cylinder bores in front and rear of the drive shaft, and   a refrigerant communication passageway communicating the swash plate chamber and the inlet of the main refrigerant suction channel of the drive shaft is formed in the swash plate.   
   
   
       6 . The compressor as set forth in  claim 2 , wherein the piston is a double headed piston, the cylinder bore is formed in plural at both sides of the swash plate chamber,
 the outlet of the main refrigerant suction channel of the drive shaft is formed at least one in every front and rear so as to correspond to the cylinder bores in front and rear of the drive shaft, and   a refrigerant communication passageway communicating the swash plate chamber and the inlet of the main refrigerant suction channel of the drive shaft is formed in the swash plate.   
   
   
       7 . The compressor as set forth in  claim 3 , wherein the piston is a double headed piston, the cylinder bore is formed in plural at both sides of the swash plate chamber,
 the outlet of the main refrigerant suction channel of the drive shaft is formed at least one in every front and rear so as to correspond to the cylinder bores in front and rear of the drive shaft, and   a refrigerant communication passageway communicating the swash plate chamber and the inlet of the main refrigerant suction channel of the drive shaft is formed in the swash plate.   
   
   
       8 . The compressor as set forth in  claim 4 , wherein the piston is a double headed piston, the cylinder bore is formed in plural at both sides of the swash plate chamber,
 the outlet of the main refrigerant suction channel of the drive shaft is formed at least one in every front and rear so as to correspond to the cylinder bores in front and rear of the drive shaft, and   a refrigerant communication passageway communicating the swash plate chamber and the inlet of the main refrigerant suction channel of the drive shaft is formed in the swash plate.