Temperature responsive laminated porous metal panel

Details Temperature responsive laminated porous metal panel Temperature responsive laminated porous metal panel

1986-02-10

1988-06-21

Ostrager, Allen M.

Heat exchange

Structural installation

236 93R, 60754, F02C 314, F23R 342

Patent

active

047519622

ABSTRACT:
A laminated porous metal panel for high temperature gas turbine applications wherein the porosity is locally variable with temperature for optimum coolant flow under all conditions. Panel porosity automatically varies to maintain a relatively constant metal temperature regardless of surrounding temperatures and pressures. The panel includes an inner lamina exposed to hot gas, an outer lamina exposed to pressurized coolant, and a center lamina bonded therebetween. Passages within the panel direct coolant from inlet pores in the outer lamina to exhaust pores in the inner lamina. The center lamina is fabricated from first and second metal sheets having different coefficients of thermal expansion. Planar fields are defined on the center lamina inboard of the exhaust pores and constitute flexible diaphragams which deflect with temperature changes in the center lamina. Flow modulating pedestals are formed on the planar fields and cooperate with the inner lamina in defining flow orifices at the exhaust pores the cross sectional areas of which vary when the diaphragms deflect with temperature changes.

REFERENCES:
patent: 3557553 (1971-01-01), Schmitz
patent: 3584972 (1971-06-01), Bratkovich et al.
patent: 4004056 (1977-01-01), Carroll
patent: 4269032 (1981-05-01), Meginnis et al.
patent: 4302940 (1981-12-01), Meginnis
patent: 4312186 (1982-01-01), Reider
patent: 4422300 (1983-12-01), Dierberger et al.

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