Global Patent Index - EP 1088260 A1

EP 1088260 A1 2001-04-04 - FLUID FLOW CONTROL METHOD AND APPARATUS FOR FILTRATION SYSTEM

Title (en)

FLUID FLOW CONTROL METHOD AND APPARATUS FOR FILTRATION SYSTEM

Title (de)

DURCHFLUSSREGELVERFAHREN UND VORRICHTUNG FÜR FILTRATIONSSYSTEM

Title (fr)

PROCEDE ET DISPOSITIF PERMETTANT D'AGIR SUR UN ECOULEMENT FLUIDIQUE DANS UN SYSTEME DE FILTRATION

Publication

EP 1088260 A1 (EN)

Application

EP 00907884 A

Priority

  • IB 0000272 W
  • ZA 9902313 A

Abstract (en)

[origin: WO0058802A1] A method and controller (10) are provided for controlling a fluid flow rate along a line (21). Fluid is fed along the line to a control valve (20) having a controllably variable aperture. Pressure is sensed by pressure sensing means (14) in the line upstream of the valve. Instantaneous flow rate of the fluid is determined based on a knowledge of the sensed pressure, of the valve aperture setting, of the flow characteristics of the fluid and of the fluid pressure downstream of the valve. The aperture setting is varied to match the flow rate with a required flow rate. This is done by control means (16) responsive to the sensed fluid pressure and to the aperture setting.

IPC 1-7 (main, further and additional classification)

G05D 7/06; B01D 61/12; B01D 61/22

IPC 8 full level (invention and additional information)

B01D 37/04 (2006.01); B01D 61/12 (2006.01); B01D 61/22 (2006.01); G05D 7/06 (2006.01)

CPC (invention and additional information)

B01D 61/12 (2013.01); B01D 61/22 (2013.01); G05D 7/0635 (2013.01)

Citation (search report)

See references of WO 0058802A1

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

WO 0058802 A1 20001005; AU 2934700 A 20001016; EP 1088260 A1 20010404; JP 2002540519 A 20021126

INPADOC legal status


2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR IT

2002-07-10 [18W] WITHDRAWN

- Date of withdrawal: 20020516

2001-05-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010315

2001-04-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE