FIELD: compressor building.
SUBSTANCE: in version 1, the compressor unit comprises a piston compressor designed to operate in a single-stage mode or a multi-stage mode. In single-stage mode all cylinders (1–4) are connected in parallel to each other, and in multi-stage mode at least one cylinder is connected in series with at least one subsequent cylinder. Optimization of compression ratio between compressor stages with switching of stages is achieved due to the fact that compressor is made as opposed four-row, wherein the sum of working volumes of cylinders of the first and second rows (1, 2) is more or less than the sum of working volumes of cylinders of the third and fourth rows (3, 4). In the second version, the technical result is achieved due to the fact that the working volume of the cylinder of fourth row (4) is more or less than the working volume of any of the cylinders of the first, second and third rows (1–3).
EFFECT: optimization of compression ratio between compressor stages with stage switching.
2 cl, 4 dwg
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