Movable slanting plate type compressor

A compressor of a movable slanting plate type, which comprises:

• a shaft to be rotated by receiving an external driving force;
• a rotor having a plurality of cylinder chambers disposed in parallel relation with said shaft for rotation together with said shaft and a plurality of pistons which reciprocate within said cylinder chambers and revolve around said shaft;
• a plurality of rods each having one end connected to a corresponding piston and having a ball joint at the other end;
• a plurality of holder shoes, one connected to each of said rods through the corresponding ball joint for free directivity;
• a movable slanting plate revolvingly supporting said holder shoes and movable for having the angle of inclination thereof changed in one direction with respect to said shaft;
• a valve plate having a plurality of suction/discharge ports communicated with said cylinder chambers of said rotor;
• a guide plate fixed to one of said shaft and said rotor and having guide bores therein for slidably guiding said plurality of rods in the axial direction parallel to said shaft;
• the end face of said rotor at said valve plate being spaced by only a very small clearance with respect to said valve plate around said suction/discharge ports, and a comparatively large clearance being provided between said rotor and valve plate at locations other than around said suction/exhaust ports;
• and
• means for introducing discharged cooling medium gas into said relatively large clearance radially outwardly of said small clearance.

A compressor of a movable slanting plate type, which comprises:

• a shaft to be rotated by receiving an external driving force;
• a rotor having a plurality of cylinder chambers disposed in parallel relation with said shaft for rotation together with said shaft and a plurality of pistons which reciprocate within said cylinder chambers and revolve around said shaft;
• a plurality of rods each having one end connected to a corresponding piston and having a ball joint at the other end;
• a plurality of holder shoes, one connected to each of said rods through the corresponding ball joint for free directivity;
• a movable slanting plate revolvingly supporting said holder shoes and movable for having the angle of inclination thereof changed in one direction with respect to said shaft;
• a valve plate having a plurality of suction/discharge ports communicated with said cylinder chambers of said rotor;
• a guide plate fixed to one of said shaft and said rotor and having guide bores therein for slidably guiding said plurality of rods in the axial direction parallel to said shaft;
• said compressor further comprising a compressor housing in which said shaft, rotor, pistons, rods, slanting plate and guide plate are mounted, said housing defining a crank chamber, said housing having a front cover having a boss thereon projecting into said crank chamber and having a hollow bore therethrough in which said shaft is rotatably supported, the lower portion of said crank chamber and said hollow bore being communicated with each other, and a pump means being provided between said hollow bore and the portion of said shaft rotating in said hollow bore for supplying lubricating oil from said crank chamber to said hollow bore.

A compressor of a movable slanting plate type, which comprises:

• a shaft to be rotated by receiving an external driving force;
• a rotor having a plurality of cylinder chambers disposed in parallel relation with said shaft for rotation together with said shaft and a plurality of pistons which reciprocate within said cylinder chambers and revolve around said shaft;
• a plurality of rods each having one end connected to a corresponding piston and having a ball joint at the other end;
• a plurality of holder shoes, one connected to each of said rods through the corresponding ball joint for free directivity;
• a movable slanting plate revolvingly supporting said holder shoes and movable for having the angle of inclination thereof changed in one direction with respect to said shaft;
• a valve plate having a plurality of suction/discharge ports communicated with said cylinder chambers of said rotor;
• a guide plate fixed to one of said shaft and said rotor and having guide bores therein for slidably guiding said plurality of rods in the axial direction parallel to said shaft;
• said compressor further comprising a compressor housing in which said shaft, rotor, pistons, rods, slanting plate and guide plate are mounted, said housing defining a crank chamber, said housing having a rear cover having a suction chamber therein and said valve plate having passages therethrough at the upper and lower portion of said suction chamber communicating said suction chamber with said crank chanber.