Device for the impingement cooling of a fluid-flow prime mover is in a heat exposed component as well as a method for this purpose,

摘要

An apparatus is described as well as a process for the impingement cooling of a in a turbomachine heat exposed component with a wall section to be cooled, the at least on one side at least one impact cooling is exposed to air current by a flow channel within a flat element, to be cooled at a spacing with respect to the wall section is arranged, and impinges on the wall section to be cooled. Dollars a the invention is characterised in that the flow channel - an inlet and an outlet opening, that the outlet opening to be cooled directly to the wall section, and that the inlet opening has a flow cross section, which is smaller than the cross-section of flow of the outlet opening is.