EP 0731939 A1 19960918 - DEVICE FOR THE CONTROLLED DOSING OF A FLUID
Title (en)
DEVICE FOR THE CONTROLLED DOSING OF A FLUID
Title (de)
VORRICHTUNG ZUR GESTEUERTEN DOSIERUNG EINER FLÜSSIGKEIT
Title (fr)
DISPOSITIF POUR DOSER UN FLUIDE DE MANIERE CONTROLEE
Publication
Application
Priority
- FR 9401408 W 19941202
- FR 9313758 A 19931203
Abstract (en)
[origin: WO9515520A1] The present invention relates to a device providing for the metering of a small flow rate of a fluid (1) by using a second drive fluid (2), the pressure of which is regulated, the flow rate of one or the other of said fluids being measured by determining head losses for long channels operating in laminar flow (14, 15, 16, 36) and arranged on their paths. It is thus possible to produce quasi universal dosers whose range of flows may reach typically 1000. It is also possible to dose dangerous fluids or fluids whose rheological properties are complex by measuring the flow rates of the drive fluid separately from the fluid to be metered, both fluids being separated by a wall or free surface. The laminar head losses may be obtained by means of spirals engraved in insets in contact with planar walls.
IPC 1-7
IPC 8 full level
B67D 5/02 (2006.01); B67D 7/02 (2010.01); G05D 7/06 (2006.01)
CPC (source: EP)
B67D 7/0238 (2013.01); G05D 7/0688 (2013.01)
Citation (search report)
See references of WO 9515520A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9515520 A1 19950608; AU 1193395 A 19950619; EP 0731939 A1 19960918; FR 2713362 A1 19950609; FR 2713362 B1 19960301
DOCDB simple family (application)
FR 9401408 W 19941202; AU 1193395 A 19941202; EP 95902826 A 19941202; FR 9313758 A 19931203