Patent ID: 8206668

Claim:
Apparatus for producing a gas charged with a volatile compound, the apparatus comprising: a fluid-flow duct ( 10 ) having an inlet ( 11 ) and an outlet ( 12 ), and mounted in succession in series in said fluid-flow duct ( 10 ) between its inlet ( 11 ) and its outlet ( 12 ): a suction fan ( 20 ) for sucking in a carrier gas available at the inlet ( 11 ) of the fluid-flow duct ( 10 ) and for discharging it towards the outlet ( 12 ) of said fluid-flow duct ( 10 ); a bubbler ( 30 ) suitable for causing the carrier gas to pass through a volatile liquid ( 31 ) suitable for being contained in said bubbler so as to obtain at the outlet ( 32 ) of the bubbler a stream of carrier gas ( 33 ) charged with vapor of said volatile liquid; a fractioning device ( 40 ) for fractioning said charged gas stream obtained at the outlet ( 32 ) of said bubbler ( 30 ) so as to deliver at its outlet ( 41 ) said charged gas stream in fractioned form; and a treatment member ( 50 ) for treating said fractioned charged gas stream to impart a determined quality thereto prior to it being ejected from the outlet ( 12 ) of the fluid-flow duct ( 10 ); said fluid-flow duct ( 10 ) comprising at least: an enclosure ( 111 ) suitable for being positioned vertically, having both a first opening ( 113 ) situated substantially in its top portion ( 112 ), said first opening constituting the inlet ( 11 ) of the fluid-flow duct ( 10 ), and a relatively planar bottom ( 114 ) having at least one second opening ( 115 ) formed therein; a tube ( 120 ) having a vertical height, having at its two ends respectively a third opening ( 121 ) situated in a high position and a fourth opening ( 122 ) situated in a low position, said tube ( 120 ) being secured to said bottom ( 114 ) of said enclosure ( 111 ) in such a manner that the second and third openings ( 115 , 121 ) are in leaktight communication; a flask ( 140 ) having in its upper portion a fifth opening ( 141 ) of a shape that is substantially complementary to the bottom ( 114 ) of said enclosure ( 111 ), said flask having a depth in the vertical direction that is greater than the of the tube ( 120 ); and an outlet channel ( 160 ) having sixth and seventh openings ( 161 , 162 ), said outlet channel being mounted to co-operate with said enclosure ( 111 ) and said flask ( 140 ) in such a manner that the sixth opening ( 161 ) is suitable for being in leaktight communication with the fifth opening ( 141 ), and that the seventh opening ( 162 ) opens out into the ambient medium ( 200 ), said seventh opening ( 160 ) constituting the outlet ( 12 ) of said fluid-flow duct ( 10 ).