Patent ID: 6048184
Filing Date: 2000-04-11
Classification: F04C

Abstract:
A back-pressure sealing system for a revolving compressor, comprising:a stator with an upper side, blades in several circles around a vertical axis and an outlet on said upper side, which is concentric with said vertical axis and has a peripheral wall, which forms an upward protruding neck with an outer wall;a separating part above said stator with an upper side and a lower side, having a central opening with an inner wall, which is concentric with said vertical axis, surrounding said neck of said stator;a connecting system, connecting said upper and lower sides of said separating part and having an accommodating system, which is open to said lower side of said separating part, from where a closing element with a lateral surface is inserted, and which has an lateral wall and top holes, which connect to said upper side of said separating part;a first sealing device between said neck of said stator and said central opening of said separating part, said first sealing device further comprisinga first sealing ring with an upward bent periphery, which leans against said outer wall of said neck of said stator or against said inner wall of said central opening, anda first holding ring for holding said first sealing ring;a second sealing device, located in said accommodating system between said lateral surface of said closing element and said lateral wall and further comprisingat least one second sealing ring with an upward bent periphery, which leans against at least one of said lateral surface of said closing element and said lateral wall of said accommodating system, anda second holding ring for holding said at least one second sealing ring.