Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1986-10-14
1988-06-28
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181222, B64F 126
Patent
active
047533196
ABSTRACT:
Disclosed is an exhaust silencer for high-power gas turbines having an outer case made from steel plate formed into a Greek fret pattern, and proved with inner soundproofing panels of which are covered with standardized, insulating-soundproofing compound bricks. Each compound brick is preferably of square shape and include a front brick and a rear brick. The front brick is made from an annealed stainless steel plate, beveled at its corners, perforated in its central area only, and bent along each of its edges to form a bracket shape in cross section, inside which bracket-edged perforated steel plate is inserted a pad of insulating material of standardized dimensions, to act as an insulator-soundproofer made from very-high-quality materials subject for high temperature use. The second, rear brick, has a thickness approximately twice the thickness of the first brick, and is comprised of a thin plate of hardened stainless steel, forming a square frame with beveled corners, and with its front and rear edges bent to form a bracket shape in cross section, wherein the rear edge diverges outwardly to provide a spring-like resistance of the square frame against the steel plate of the outer case which it abuts, which bracket-edged square frame contains an insulating-soundproofing pad made from materials suitable for medium temperatures, and hence of lower quality.
REFERENCES:
patent: 3159238 (1964-12-01), Shearer
patent: 3715009 (1973-02-01), Smith et al.
Fuller Benjamin R.
Nuovopignone S.p.A.
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