Fluid blow-off silencer

Claim 2

A blow-off silencer for use on a fluid-discharge passage, for passing a fluid stream to ambient, comprising: a generally cylindrical housing having a cross sectional area greater than that of said passage and adapted to be connected to receive said fluid stream; a diffuser unit affixed at one end of said housing for receiving said fluid stream and for dividing said stream into a multiplicity of separate streams; a perforated liner, spaced apart from a portion of said housing at said one end, to define an annular space between said housing and said liner and also defining an unobstructed open space extending from said diffuser unit through said housing; a pack of granular energy-absorbing particles disposed in said annular space to contact said housing; and at least one, substantially cylindrical energy-absorbing structure fixed in said open space of said housing and extending adjacent the opposed end of said housing to define an unobstructed open passage from said diffuser unit through said housing for passing said separate streams to ambient.

Claim 3

A blow-off silencer according to claim 1 wherein one of said energy-absorbing structures conforms to an interior wall of said housing and further includes a terminal annulus of granular particles for closing an end of said one structure.

Claim 4

A blow-off silencer according to claim 1 including a plurality of substantially cylindrical, energy-absorbing structures affixed in concentric, spaced-apart relationship within said housing.

Claim 5

A blow-off silencer according to claim 1 wherein said granular energy absorbing particles comprise permeable mineral particles.

Claim 6

A blow-off silencer for use on a fluid-discharge passage, for passing a fluid stream to ambient, comprising: a generally cylindrical housing having a cross sectional area greater than that of said passage and adapted to be connected to receive said fluid stream; a diffuser unit affixed at one end of said housing for receiving said fluid stream and for dividing said stream into a multiplicity of separate fluid streams; a perforated liner, spaced apart from a portion of said housing at said one end, to define an annular space between said housing and said liner; a pack of granular energy-absorbing particles disposed in said annular space to contact said housing; and a substantially cylindrical energy-absorbing structure fixed adjacent said housing and extending above said pack to a location adjacent the opposed end of said housing to pass said separate streams from said diffuser unit to ambient, said structure conforming to an interior wall of said housing and further including a terminal annulus of loose granular particles for closing an end of said structure against said fluid streams by contact with said housing.

Claim 7

A blow-off silencer for use on a fluid-discharge passage, for passing a fluid stream to ambient, comprising: a generally cylindrical housing having a cross sectional area greater than that of said passage and adapted to be connected to receive said fluid stream; a diffuser unit affixed at one end of said housing for receiving said fluid stream and for dividing said stream into a multiplicity of separate fluid streams; a perforated liner, spaced apart from a portion of said housing at said one end, to define an annular space between said housing and said liner; a pack of granular energy-absorbing particles disposed in said annular space to contact said housing; and a substantially cylindrical energy-absorbing structure fixed adjacent said housing and extending above said pack to a location adjacent the opposed end of said housing to pass said separate streams from said diffuser unit to ambient, said structure conforming to an interior wall of said housing and further including a terminal annulus of loose granular particles for closing an end of said structure against said fluid streams by contact with said housing.