MOTOR-COMPRESSOR UNIT Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: compressor has three working chambers 11-13 with respective valves; secondary members of single-phase linear capacitor induction motor are used as pistons 7 and 8; they are made in the form of hollow ferromagnetic cylinders closed on both ends and provided with current conducting sleeves 9,10 on their outer surface; inductor of cylindrical linear motor has cylindrical ferromagnetic frame 1 accommodating alternating magnetic and nonmagnetic rings 2 and 3, respectively, with circular windings 4 placed inbetween. Compressor is closed at ends with flanges 5 and 6. Flexible members 21-23 are installed in all three spaces 11-13. EFFECT: improved design. 1 dwg