Global Patent Index - EP 1844236 A1

EP 1844236 A1 2007-10-17 - A SYSTEM AND A METHOD FOR CAPACITY CONTROL IN A SCREW COMPRESSOR

Title (en)

A SYSTEM AND A METHOD FOR CAPACITY CONTROL IN A SCREW COMPRESSOR

Title (de)

SYSTEM UND VERFAHREN ZUR STEUERUNG DER LEISTUNG EINES SCHRAUBENVERDICHTERS

Title (fr)

SYSTEME ET PROCEDE POUR LE CONTROLE DE LA CAPACITE DANS UN COMRESSEUR A VIS

Publication

EP 1844236 A1 (EN)

Application

EP 06711366 A

Priority

  • IN 2006000038 W
  • IN 85CH2005 A

Abstract (en)

[origin: WO2006095364A1] A system and amethod for implementing capacity control in a screw compressor (R), said system comprising; a screw compressor (1 ), said compressor driven by a multi-speed motor (2) to compress air or gas medium, a bypass inlet member with a bypass valve (10), extending form the high pressure zone to the low pressure zone of the screw compressor (1 ) to recirculate the gaseous medium, a bypass valve controller (7) functionally connected to said bypass valve (10), a motor controller (9) functionally connected to the motor (2) to effect multi-speed operations, a main processing control unit (8) disposed to control the bypass valve (10) and multi-speed operations; measuring means disposed on the compressed medium passage for measuring the changes in the pressure and/or temperatur changes in the form of signals, a signal converter (20) functionally connected to the main processing unit (8) and the measuring means to receive the signals, and said motor controller (9) and bypass valve controller (7) are functionally connected to the main processing unit (8) to perform the capacity control of the screw compressor (1 ).

IPC 8 full level (invention and additional information)

F04C 18/16 (2006.01)

CPC (invention and additional information)

F04C 28/26 (2013.01); F04C 18/16 (2013.01); F04C 28/08 (2013.01)

Citation (search report)

See references of WO 2006095364A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

EPO simple patent family

WO 2006095364 A1 20060914; AT 504743 T 20110415; CN 100562666 C 20091125; CN 101163885 A 20080416; DE 602006021137 D1 20110519; EP 1844236 A1 20071017; EP 1844236 B1 20110406; HK 1116852 A1 20100205; US 2008286087 A1 20081120

INPADOC legal status


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