LINEAR DRIVE WITH REDUCED AXIAL FORCE COMPONENT, LINEAR COMPRESSOR AND REFRIGERATOR Russian patent published in 2011 - IPC H02K33/10 H02K41/03 H02K1/14 F25B1/02 F25B25/02 

FIELD: electrical engineering.

SUBSTANCE: linear drive 1 comprises stator 2 accommodating slide 7 reciprocating there inside along axis 3. Note here that stator 2 incorporates magnetising core 4 with poles 5, 6. Note also that slide 7 comprises assemblage of alternating opposite-polarisation magnets 22, 23 arranged one after another along axis 3. Said stator 2 comprises at least two drive coils 16, 20 arranged opposed relative to slide 7. Besides said magnets 22, 23 of said slide 7 feature length L2 along axis 3 that corresponds, in fact, to sum of poles widths B1 and distance A1 between poles 5, 6. Skewed surface 9 of supports 8, 10 or appropriate selection of length of magnets 22, 23, slide 7, pole width B1 and distance A1 between poles 5, 6 improve control or adjustment of reciprocation of rotor 7.

EFFECT: higher accuracy and efficiency of control, power savings.

18 cl, 5 dwg