EP 1387961 B1 20060308 - MULTI-STAGE SCREW COMPRESSOR
Title (en)
MULTI-STAGE SCREW COMPRESSOR
Title (de)
MEHRSTUFIGER SCHRAUBENVERDICHTER
Title (fr)
COMPRESSEUR A VIS A PLUSIEURS ETAGES
Publication
Application
Priority
- GB 0104278 W 20010925
- GB 0023456 A 20000925
Abstract (en)
[origin: WO0225115A1] The invention relates to improvements in the drive of a multi-stage screw compressor using independent electronic motors with electronic speed control. A multi-stage screw compressor comprises at least tow stages of compression, each compressor stage comprising a pair of rotors driven to effect gas compression. Each compression stage is provided with independent variable speed drive means, and a control unit for controlling the speeds of the independent drive means. The control unit comprises processing means for processing signals generated by a plurality of devices monitoring operating parameters of the compressor, and adjusting the speed of the drive means to provide a required gas flow delivery rate and pressure, wherein at least one of said monitoring devices monitors the torque and at least one of said monitoring devices monitors the speed of each drive means.
IPC 8 full level
F04C 28/02 (2006.01); F04C 18/16 (2006.01); F04C 23/00 (2006.01); F04C 28/08 (2006.01)
CPC (source: EP US)
F04C 18/16 (2013.01 - EP US); F04C 23/001 (2013.01 - EP US); F04C 28/08 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0225115 A1 20020328; AT E319932 T1 20060315; AU 9010001 A 20020402; DE 60117821 D1 20060504; DE 60117821 T2 20061102; EP 1387961 A1 20040211; EP 1387961 B1 20060308; ES 2260285 T3 20061101; GB 0023456 D0 20001108; GB 2367332 A 20020403; GB 2367332 B 20031203; US 2004101411 A1 20040527
DOCDB simple family (application)
GB 0104278 W 20010925; AT 01969980 T 20010925; AU 9010001 A 20010925; DE 60117821 T 20010925; EP 01969980 A 20010925; ES 01969980 T 20010925; GB 0023456 A 20000925; US 38095503 A 20030321