EP 0245427 B1 19891004 - SCREW ROTOR COMPRESSOR AND REFRIGERATION PLANT
Title (en)
SCREW ROTOR COMPRESSOR AND REFRIGERATION PLANT
Publication
Application
Priority
GB 8528211 A 19851115
Abstract (en)
[origin: WO8703048A1] A screw compressor, especially adapted for use in conjunction with a refrigeration plant. The compressor comprises a casing with a working space generally composed of intersecting bores with parallel axes provided with spaced apart inlet and outlet ports, and a pair of intermeshing male and female rotors, each having helical lands and intervening grooves. The compressor is provided with capacity control means comprising a bleed port and a valve member having an axially displaceable control edge defining the actual size of the port and means for additional supply of working fluid at a pressure higher than the normal inlet pressure. The capacity control means is situated peripherally out of the outlet port, and the additional supply means comprises a port within the capacity control valve located at an axial distance from the control edge at least corresponding to the axial distance between two consecutive lands of the facing rotor. The compressor is further provided with separate means for selective adjustment of the outlet port.
IPC 1-7
IPC 8 full level
F04C 18/16 (2006.01); F04C 28/12 (2006.01)
CPC (source: EP)
F04C 28/125 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
WO 8703048 A1 19870521; AU 6732287 A 19870602; DE 3666074 D1 19891109; EP 0245427 A1 19871119; EP 0245427 B1 19891004; GB 8528211 D0 19851218
DOCDB simple family (application)
SE 8600526 W 19861114; AU 6732287 A 19861114; DE 3666074 T 19861114; EP 86906989 A 19861114; GB 8528211 A 19851115