EP 0869841 A1 19981014 - FOAM GENERATING DEVICE
Title (en)
FOAM GENERATING DEVICE
Title (de)
SCHAUMSTOFFHERSTELLUNGSVORRICHTUNG
Title (fr)
DISPOSITIF DE GENERATION DE MOUSSE
Publication
Application
Priority
- FR 9701167 W 19970701
- FR 9608162 A 19960701
- FR 9610947 A 19960909
- FR 9700690 A 19970123
Abstract (en)
[origin: US6042089A] PCT No. PCT/FR97/01167 Sec. 371 Date Feb. 26, 1998 Sec. 102(e) Date Feb. 26, 1998 PCT Filed Jul. 1, 1997 PCT Pub. No. WO98/00227 PCT Pub. Date Jan. 8, 1998A device for generating foam by the Venturi effect mixes liquid and gaseous phases. The device has a liquid insertion nozzle on the same axis as a Venturi stage having a converging portion disposed facing the nozzle, a throat of diameter "D", and a gas inlet coaxial with the nozzle and in communication with the converging portion. In operation, the gas is sucked in by the Venturi effect and directed towards a mixing chamber connected to a foam outlet. Mixing between the two phases takes place in a free jet, and the diverging portion of the Venturi has at least three zones of progressive cone angles, with discontinuities between the zones giving rise to a cavitation phenomenon, and opening out into a turbulent chamber.
IPC 1-7
IPC 8 full level
B01F 5/04 (2006.01); B01F 11/02 (2006.01); B05B 7/00 (2006.01); B05B 7/04 (2006.01); B05B 7/24 (2006.01); B05B 17/06 (2006.01)
CPC (source: EP US)
B01F 25/31 (2022.01 - EP US); B01F 25/3111 (2022.01 - EP US); B01F 25/31241 (2022.01 - EP US); B01F 25/31243 (2022.01 - EP US); B01F 25/312533 (2022.01 - EP); B01F 31/86 (2022.01 - EP US); B05B 7/0018 (2013.01 - EP US); B05B 7/0425 (2013.01 - EP US); B05B 7/0458 (2013.01 - EP US); B05B 7/2494 (2013.01 - EP US); B01F 23/235 (2022.01 - EP US); B01F 25/312533 (2022.01 - US); B05B 17/06 (2013.01 - EP US); Y10S 261/26 (2013.01 - EP US); Y10S 261/75 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
WO 9800227 A1 19980108; AT E242044 T1 20030615; CA 2231338 A1 19980108; DE 69722583 D1 20030710; EP 0869841 A1 19981014; EP 0869841 B1 20030604; US 6042089 A 20000328
DOCDB simple family (application)
FR 9701167 W 19970701; AT 97931836 T 19970701; CA 2231338 A 19970701; DE 69722583 T 19970701; EP 97931836 A 19970701; US 2941798 A 19980226