Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1992-11-24
1994-02-22
Kwon, John T.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
F01D 518
Patent
active
052882071
ABSTRACT:
A turbine airfoil having a baffleless cooling passage for directing cooling fluid toward a trailing edge is disclosed. Various construction details are developed which provide axially oriented, interrupted channels for turning a flow of cooling fluid from a radial direction to an axial direction. In a particular embodiment, a turbine airfoil has a cooling passage including a plurality of radially spaced walls, a plurality of radially spaced dividers downstream of the walls, and a plurality of radially spaced pedestals positioned axially between the walls and dividers. The walls and dividers define channels having an axial interruption permitting cross flow between adjacent channels. The cross flow minimizes the adverse affects of a blockage within a subchannel between adjacent walls. The pedestals are aligned with the subchannels such that cooling fluid exiting a subchannel impinges upon the pedestal.
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Kwon John T.
United Technologies Corporation
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