| 摘要 |
A reciprocating sliding piston type gas compressor defines a compression chamber between a piston 9 and an opposite surface e.g. piston head 10. The piston 9 and cylinder head 10 have a surface defining at least one fin 8 e.g. ridges with peaks and troughs for absorbing heat of compression from the compressed gas. The piston may be hydraulically actuated, in which case the hydraulic fluid may remove heat from the piston. Alternatively, the piston may be mechanically actuated, and cooled by a chilled liquid spray. The piston 9 may include a projection 20, which extends into the valve opening, to minimise dead volume in the compression chamber. The sliding piston 9 may follow either a linear or a circular path. There may be two or more cylinders, e.g. coaxially arranged.
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