FIELD: compression of gases in audible range; refrigerating engineering. SUBSTANCE: magnetic system ensured radial magnetic field. Piston made in form of electromagnet coil is located in radial magnetic field. Piston has form of ring with taper inner surface forming circular taper nozzle together fixed axial member of magnetic system (core). This nozzle widens towards suction chamber. Piston is secured to housing by means of two current- supply diaphragm limiting the amplitude of oscillatory motion. Kinetic compression of gas is effected in nozzle portion of piston and volume delivery is performed in end portion at oscillatory motion of piston- nozzle in permanent radial magnetic field. EFFECT: complete balance, reduced noise level, enhanced economical efficiency; facilitated manufacture. 4 cl, 4 dwg
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