COMPRESSOR WITH NONCONTACT SEALING FOR COMPRESSING PURE GASES Russian patent published in 1997 - IPC

FIELD: mechanical engineering; compressors. SUBSTANCE: delivery valve seat and its shutoff member are made in form of gas static step bearing supplied from space in which shutoff member seating pressure exceeds delivery pressure. Supply space communicates with valve seat working surface, being fixed portion of gas static step bearing, through flow rate limiters and can be connected with cylinder compression chamber through flow rate regulator made in form of throttling member of labyrinth seal, reverse self-acting valve or in form of variable-volume space formed in cycle of delivery and expansion of working medium. EFFECT: enlarged operating capabilities. 7 cl, 8 dwg