Nozzle for cryogenic particle blast system

Details Nozzle for cryogenic particle blast system Nozzle for cryogenic particle blast system

B - Operations, Transporting

24

C

B24C 5/04 (2006.01)

Patent

CA 2213624

A convergent-divergent Single/Multiple Expansion wave contour wall and wave Reflection solid wall Nozzle (S/MERN) for use with particle blast systems is provided which includes a single contoured converging-diverging wall opposing a generally flat, solid wall disposed generally parallel to the direction of the jet flow. The transition from a circular delivery hose to the rectangular throat of the S/MERN nozzle is preferably in only one dimension, with the distance between the side support walls being substantially the same as the diameter of the delivery hose. The S/MERN nozzle relies on reflection from the flat, solid wall for Mach wave expansions, rather than reflections of opposing expansion waves as in conventional nozzles.

Buse convergente/divergente de type S/MERN (à ondes de détente simple/multiple comportant une unique paroi curviligne face à une paroi pleine de réflexion d'ondes) élément d'un système de soufflage de particules comportant une seule paroi curviligne disposée face à une paroi pleine sensiblement plane et sensiblement parallèle à la direction du jet. La transition entre le tuyau d'alimentation circulaire et l'étranglement rectangulaire de la buse S/MERN s'effectue de préférence dans une seule dimension, la distance entre les parois support latérales étant sensiblement égale au diamètre du tube d'alimentation. Le principe de la buse S/MERN se base sur la réflexion sur une paroi pleine plane des ondes supersoniques de détente plutôt que sur des réflexions d'ondes de détente en opposition, comme c'est le cas dans les buses traditionnelles.

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