Fluid control device with reduced sound generation

Details Fluid control device with reduced sound generation Fluid control device with reduced sound generation

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 13/24 (2006.01) F15D 1/04 (2006.01) F24F 11/047 (2006.01)

Patent

CA 2237781

A fluid control device (20) with a reduced sound generation. The device is a nozzle-type valve that has a converging portion (A), a diverging portion (B) and a throat (31) therebetween. A diverging portion (B) acts as a diffuser and may be conical or may have a slight curvature. In each, the diffusion angle is less than 20° so that turbulence of fluid flowing through the valve is minimized and a boundary layer is maintained between the fluid and an inside surface of the fluid control device (20). A control system that uses such a fluid control device is also disclosed and such device may be used either in a supply conduit or an exhaust conduit.

L'invention concerne un dispositif de commande de fluide (20) à niveau sonore réduit. Ledit dispositif est une vanne de type buse présentant une partie convergente (A) et une partie divergente (B) entre lesquelles se trouve un étranglement (38). La partie divergente (B) sert de diffuseur et peut être conique ou présenter une faible courbure. Dans chaque cas, l'angle de diffusion est inférieur à 20 DEG de sorte que la turbulence du fluide s'écoulant à travers la vanne est réduite, et une couche limite est maintenue entre le fluide et une surface interne du dispositif de commande de fluide (20). L'invention concerne également un système de commande utilisant un tel dispositif de commande de fluide. Ce dispositif peut être utilisé soit dans une conduite d'alimentation soit dans une conduite d'évacuation.

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