Piston-type compressor with piston guide

A compressor comprising:

• a cylinder bore having a guide bore adjacent thereto, the guide bore having a diameter that is larger than the cylinder bore diameter, both the cylinder bore and the guide bore being disposed in a compressor housing;
• a piston disposed within the cylinder bore, the piston comprising a piston head and an engaging portion having a fitting guide and a pair of shoe seats coupled to a pair of shoes, the fitting guide having a fitting surface reciprocally fitted to the guide bore, wherein the fitting guide has a length that is greater than the length of the pair of shoe seats with respect to the reciprocating direction of the piston and a width that is greater than the width of the pair of shoe seats with respect to the circumferential direction of the piston;
• a drive shaft;
• and
• a swash plate coupled to the drive shaft and to the engaging portion of the piston via the shoes, the swash plate rotating together with the drive shaft, the swash plate having an angle of inclination with respect to a plane perpendicular to the axis of rotation, wherein the piston reciprocates in response to the rotation of the swash plate and the piston head in the cylinder bore compresses a refrigerant by the reciprocating movement.

A compressor comprising:

• a housing comprising cylinder bore and a guide bore adjacent to the cylinder bore, wherein the diameter of the guide bore is larger than the diameter of the cylinder bore;
• a piston disposed within the cylinder bore and the guide bore, the piston comprising a piston head and an engaging portion having a fitting guide, wherein the fitting guide has a fitting surface reciprocally fitted within the guide bore, wherein the fitting surface has a length that is greater than the length of the pair of shoe seats with respect to the reciprocating direction of the piston;
• a drive shaft;
• and
• a swash plate coupled to the drive shaft and to the engaging portion of the piston and adapted to reciprocate the piston head within the cylinder bore when the drive shaft rotates.