G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 11/00 (2006.01)
Patent
CA 2687939
The invention relates to a pump including: a gas mixing housing (1); ducts (2, 3) for supplying said housing (1) with HP and IP gases and giving into said mixing housing (1); an outlet duct (3)for the mixed gases; a pneumatic actuator (10) provided in said HP-gas supply duct (2) including a mobile piston connected to a stopper (12) whose position in said duct (2) determines a passage section of the HP gas towards said mixing housing (1); a control chamber (13) of said mobile piston adapted to be fed under pressure for determining the position of the mobile piston; a pneumatic circuit provided between a pressure source and said control chamber (13); characterised in that the pneumatic circuit includes at least one leak valve (22) adapted for generating a leak in the pneumatic circuit for modifying the pressure supplied to said control chamber (13).
L'invention concerne une trompe comprenant une enceinte (1) de mélange de gaz; débouchant dans ladite enceinte (1) de mélange, des conduites (2, 3) d'alimentation de ladite enceinte (1) en gaz HP et IP; une conduite (3) de sortie des gaz mélangés; un actionneur (10) pneumatique agencé dans ladite conduite (2) d'alimentation en gaz HP, comprenant un piston mobile solidaire d'un obturateur (12) dont la position dans ladite conduite (2) détermine une section de passage de gaz HP vers ladite enceinte (1) de mélange, une chambre (13) de commande dudit piston mobile adaptée pour être alimentée en pression qui détermine la position dudit piston mobile; un circuit pneumatique agencé entre une source de pression et ladite chambre (13) de commande, caractérisée en ce que ledit circuit pneumatique comprend au moins une vanne (22) de fuite agencée adaptée pour générer une fuite dans le circuit pneumatique qui permet de modifier la pression délivrée à ladite chambre (13) de commande.
Fauque Stephane
Stephan Christine
Goudreau Gage Dubuc
Liebherr-Aerospace Toulouse Sas
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