Heat transfer promotion structure for internally...

Details Heat transfer promotion structure for internally... Heat transfer promotion structure for internally...

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/18 (2006.01) F28F 3/04 (2006.01)

Patent

CA 2383959

A cooled airfoil has an internal cooling pas-sage in which a plurality of trip strips are arranged to effect variable coolant flow and heat transfer coefficient distribu-tion so as to advantageously minimize the amount of coolant flow required to adequately cool the airfoil structure. In one embodiment, this is accomplished by varying the dimensions of the trip strips along a transversal axis relative to the cool-ing passage.

La présente invention concerne un profil de refroidissement qui possède un passage de refroidissement interne dans lequel une pluralité de bandes de déclenchement sont agencées de façon à induire un flux de refroidissement variable et une répartition du coefficient de transfert thermique et de façon à minimiser avantageusement ainsi la quantité du flux de refroidissement requise pour refroidir convenablement la structure du profil. Dans un mode de réalisation de l'invention, ce résultat est obtenu par la variation des bandes de déclenchement le long d'un axe transversal par rapport au passage de refroidissement.

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