| 摘要 |
Disclosed is a rotary compressor having two compression capacities in clockwise and counterclockwise directions. The rotary compressor includes: a driving shaft ( 13 ) being rotatable clockwise and counterclockwise, and having an eccentric portion ( 13 a) of a predetermined size; a cylinder ( 21 ) having a predetermined inner volume; roller ( 22 ) installed rotatably on an outer circumference of the eccentric portion ( 13 a) so as to contact an inner circumference of the cylinder, performing a rolling motion along the inner circumference and forming a fluid chamber ( 29 ) to suck and compress fluid along with the inner circumference; a vane ( 23 ) installed elastically in the cylinder to contact the roller; upper and lower bearings ( 24, 25 ) installed respectively in upper and lower portions of the cylinder ( 21 ), for rotatably supporting the driving shaft ( 13 ) and hermetically sealing the inner volume; suction ( 27 ) and discharge ports ( 26 ) communicating with the fluid chamber ( 29 ) depending on the rotational direction of the driving shaft ( 13 ).
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