ROTARY COMPRESSOR HAVING A PLURALITY OF CYLINDER CHAMBER PARTITIONED BY INTERMEDIATE PARTITION PLATE

摘要

An intermediate partition plate is provided between a plurality of adjacent cylinders to partition cylinder chambers in the cylinders from each other. A guide opening portion, in which respective cylinder abutting surfaces are open, is formed in the intermediate partition plate at a position on an outer side than a cylinder circumferential surface, and a slider is housed to be reciprocated. Gas is guided from the cylinder chambers during compression to the guide opening portion through first and second notches to apply the pressures of the cylinder chambers to the slider. A back pressure is applied to the slider from a back pressure pipe to move forward or backward the slider by a difference pressure between the back pressure and the cylinder chamber pressures. The slider shuts off the cylinder chambers from each other or escapes from the first and second notches to cause the cyliner chambers to communicate with each other through the first and second notches and the guide opening portion.