Patent ID: 7947218

Claim:
A cooling device for use in cooling an article, comprising: an air source that provides air flow; and a shroud that receives air flow from the air source and is adapted to direct the air onto a surface of the article, wherein the shroud includes an end having a receiver that is connected to an air exhaust outlet of the air source, wherein the shroud includes an air directing surface connected to an end of the shroud opposite the receiver end, the air directing surface having a outer surface outside of the shroud and having a plurality of apertures through which air flows out of the shroud, wherein the one or more apertures have a total cross-sectional area that is less than a cross-sectional area of the air exhaust outlet, wherein the article is a coil of sheet metal, wherein the shroud includes an annular adaptor connected to the outer surface of the air directing surface and adapted to abut an end of the coil and form a seal around a core of the coil to prevent air flow through the core, wherein the plurality of apertures are located on the air directing surface outer surface spaced around the circumference of the adaptor, and wherein the air directing surface is adapted to direct air flow across a surface of the coil between the coil end and the outer surface of the air directing surface.