EP 0878664 A1 19981118 - Gas injection device for inducing draught in a gaseous fluid transport system
Title (en)
Gas injection device for inducing draught in a gaseous fluid transport system
Title (de)
Gasinjektionsvorrichtung zur Zugerzeugung in einer Gastransportanlage
Title (fr)
Dispositif d'injection de gaz pour l'aide au tirage dans un système de transport de fluide gazeux
Publication
Application
Priority
FR 9705856 A 19970513
Abstract (en)
The injector consists of an insert (2) which is fitted into the lower end of the outlet duct. It has an inner passage for the main gas flow to pass through and a series of lengthwise grooves (6) in its upper section (5) which form channels with the inner surface of the duct through which an auxiliary gas can be injected to increase the flow rate. The grooves can be straight or spiral in shape, and are spaced evenly round the outer surface of the insert. They can be in sufficient numbers to be more or less adjacent. the insert is made in one piece and has inner and outer surfaces which can be circular or polygonal. Its upper section is made in the shape of a truncated cone tapering at an angle of 10 - 40 degrees, and preferably 25 degrees. The injector is mounted on a base made of aluminium alloy or PVC.
Abstract (fr)
Système de transport de fluide gazeux comportant un dispositif d'injection de fluide gazeux pour l'aide au tirage (1). Le dispositif comprend un tronçon de conduit (11a) et une pièce (2) positionnée vers une partie extrême du tronçon de conduit. La pièce se présente sous la forme d'un manchon (2), formant un passage intérieur pour le fluide gazeux et comportant, une pluralité de cannelures en creux s'étendant sur sa surface extérieure (5). Les cannelures ont pour fonction de délimiter, avec le tronçon de conduit, des canaux pour l'introduction du fluide gazeux d'injection. <IMAGE>
IPC 1-7
IPC 8 full level
F04F 5/46 (2006.01); F23L 17/08 (2006.01); F23L 17/16 (2006.01)
CPC (source: EP)
F04F 5/466 (2013.01); F23L 17/08 (2013.01); F23L 17/16 (2013.01)
Citation (search report)
- [A] US 3134345 A 19640526 - KING WILFRED J
- [A] US 4512264 A 19850423 - CRAWFORD JAMES P [US]
- [A] US 3978923 A 19760907 - FORD GEORGE ALAN
- [A] US 4171187 A 19791016 - REED THOMAS C [US]
- [AD] EP 0772003 A1 19970507 - AMPHOUX ANDRE [FR]
- [A] FR 2502744 A1 19821001 - BSF [FR]
- [A] EP 0617233 A1 19940928 - MG INDUSTRIES [US]
- [A] AU 607079 B2 19910221 - MELBOURNE JOHN S
- [A] FR 2272341 A1 19751219 - INST PENTRU CREATIE STINTIFIC [RO]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL PT
DOCDB simple family (publication)
EP 0878664 A1 19981118; FR 2763387 A1 19981120; FR 2763387 B1 19990723
DOCDB simple family (application)
EP 98401133 A 19980512; FR 9705856 A 19970513