Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2005-08-23
2005-08-23
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S09600A, C415S115000
Reexamination Certificate
active
06932572
ABSTRACT:
The invention is a film cooled article such as a turbine engine blade or vane, having a wall with a hot surface26to be film cooled. The hot surface26includes a depression48featuring a descending flank52and an ascending flank54.Coolant holes60,which penetrate through the wall, have discharge openings residing on the ascending flank54.During operation, the depression locally over-accelerates a primary fluid stream F flowing over the ascending flank while coolant jets70concurrently issue from the discharge openings. The local over-acceleration of the primary fluid deflects the jets onto the hot surface and spatially constrains the jets thus encouraging them to spread out laterally and coalesce into a laterally continuous, protective coolant film. In one embodiment, the depression48is a trough50.In another embodiment, the depression is a dimple72.
REFERENCES:
patent: 3515499 (1970-06-01), La Botz et al.
patent: 4676719 (1987-06-01), Auxier et al.
patent: 4922076 (1990-05-01), Cross et al.
patent: 5419681 (1995-05-01), Lee
patent: 5813836 (1998-09-01), Starkweather
patent: 6099251 (2000-08-01), LaFleur
patent: 6164912 (2000-12-01), Tabbita et al.
patent: 6176676 (2001-01-01), Ikeda et al.
patent: 6210112 (2001-04-01), Tabbita et al.
patent: 6241468 (2001-06-01), Lock et al.
patent: 0 924 384 (1999-06-01), None
patent: 1 013 877 (2000-06-01), None
patent: 1 043 480 (2000-10-01), None
Aggarwala Andrew S.
Kohli Atul
Wagner Joel H.
Baran Kenneth C.
Look Edward K.
McAleenan James M.
United Technologies Corporation
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