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1. (WO2017060253) A RECIPROCATING COMPRESSOR

Pub. No.:    WO/2017/060253    International Application No.:    PCT/EP2016/073694
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Wed Oct 05 01:59:59 CEST 2016
IPC: F04B 39/10
F04B 39/12
Applicants: NUOVO PIGNONE TECNOLOGIE SRL
Inventors: ORSI, Gianni
SORGONA, Federico
BABBINI, Alberto
BARGIACCHI, Massimo
MALECI, Riccardo
Title: A RECIPROCATING COMPRESSOR
Abstract:
It is disclosed a reciprocating compressor having a cylinder body 30 that defines a cylinder; the cylinder 2 may have a cylinder lateral wall 3 and a cylinder axis A and inside it a piston 4 is movable; at least one valve 6 is provided to selectively open and close a valve opening 7 formed in the cylinder lateral wall 3; cylinder heads 10, 11 at least partially protruding towards the piston 4 inside the cylinder 2 have a recessed surface 12 at least partially facing the valve openings 7; an intersection between at least a plane containing the cylinder axis A and the recessed surface 12 is a first curve 3 having at least a convex part facing the valve opening 7.