Combined rotary-reciprocating piston compressor

A compressor for refrigeration gas or the like comprising:

• a stator housing;
• a rotor having an axis and being mounted for rotation about said axis within said stator housing;
• means defining an even numbered plurality of similarly internally dimensioned and equispaced gas compression chambers within said rotor, arranged about and intersecting said rotor axis, opposed pairs of said compression chambers forming a single expansible chamber having a single centerline, said centerline being a diameter of said rotor at a right angle to said rotor axis, a plurality of similarly externally dimensioned pistons, one in each expansible chamber;
• each expansible chamber piston being linearly moveable through substantially the entire length of its chamber, through said rotor axis, a plurality of connecting pins, one on each piston;
• rotatable plate means for mounting the free ends of said connecting pins and being disposed within said housing on one side of said rotor, the axis of rotation of said plate means being parallel to and offset a predetermined distance from said rotor axis;
• a first shaft extending from said plate means through said housing on the axis of rotation of said plate means;
• a second shaft extending from said rotor on a side thereof opposite said one axis through said housing on the axis of rotation of said rotor, one of said first or second shafts constituting a drive shaft for said compressor;
• sealing means about each of said shafts for sealing said rotor within said housing;
• means for admitting refrigeration gas to each of said expansible chambers;
• outlet means at the radially outward end of each of said gas compression chambers of receiving compressed gas;
• duct means from said outlet means through said rotor and second shaft for conveying compressed gas from said outlet means;
• and exhaust outlet means through said housing in fluid communication with said duct means.