Apparatus and method for the creation of an impingement jet generating annular swirls as well as turbomachine with an apparatus of this type
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United States of America Patent
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Aug 11, 2015
Grant Date -
Dec 27, 2012
app pub date -
Jun 26, 2012
filing date -
Jun 27, 2011
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Abstract
An apparatus for the creation of an impingement jet generating annular swirls includes a fluidic switching element having an inlet branch with an inlet opening via which cooling gas can be supplied to the fluidic switching element, outlet branches provided downstream of the inlet branch and ending each in an outlet opening, a branching point at which the inlet branch splits into the outlet branches, and control means for controlling the cooling gas flowing in the inlet branch such that the cooling gas is routed alternatingly into the one or the other of the outlet branches, with an impingement jet pulsating at a frequency being generated in each outlet branch. The fluidic switching element is designed and provided for emitting cooling gas at the outlet openings with a mean outflow velocity and a frequency such that the impingement jet exiting the outlet openings forms annular swirls.
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