Sound attenuating apparatus and method of forming the same
First Claim
Patent Images
1. A sound attenuating apparatus for noise bearing fluid streams comprising:
- a flow through housing including an upstream housing inlet end and a spaced downstream housing outlet end;
elongated, perforated, shaped wall sheet means extending between said spaced upstream housing inlet and outlet ends, said wall sheet means being shaped to define at least one elongated perforated fluid flow-through passage for said noise bearing fluid stream to be attenuated;
sound attenuating means arranged to surround said elongated perforated wall sheet means defining said fluid flow-through passage;
and mechanical joining means including integral tab and slot means to join said shaped wall sheet means together outside said fluid flow-through passage to enhance noise bearing attenuation in a fluid stream flow and to reduce the risk of foreign materials ingestion.
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Abstract
A sound attenuating apparatus and method for forming the same including stacking selectively sized sheets of sound attenuating materials and fastening the same to form elongated, perforated sound attenuating flow-through passages which are structurally connected by means of mechanical joinders outside the noise bearing fluid stream to be attenuated.
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Citations
15 Claims
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1. A sound attenuating apparatus for noise bearing fluid streams comprising:
- a flow through housing including an upstream housing inlet end and a spaced downstream housing outlet end;
elongated, perforated, shaped wall sheet means extending between said spaced upstream housing inlet and outlet ends, said wall sheet means being shaped to define at least one elongated perforated fluid flow-through passage for said noise bearing fluid stream to be attenuated; sound attenuating means arranged to surround said elongated perforated wall sheet means defining said fluid flow-through passage; and mechanical joining means including integral tab and slot means to join said shaped wall sheet means together outside said fluid flow-through passage to enhance noise bearing attenuation in a fluid stream flow and to reduce the risk of foreign materials ingestion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- a flow through housing including an upstream housing inlet end and a spaced downstream housing outlet end;
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15. A sound attenuating apparatus for noise bearing fluid streams comprising:
- a flow-through fluid impervious housing constructed of steel panels to include an upstream housing inlet end and a spaced downstream outlet end;
a pair of upstream and downstream headers having spaced rows of spaced aligned flow-through passages therein;
elongated, perforated steel sheets extending in parallel relation between said upstream inlet end and said downstream outlet end of said housing, each of said parallel, elongated sheets including a plurality of spaced rows of three-thirty seconds of an inch diameter spaced perforations with the perforation of adjacent rows being in staggered relation and with the centers of said perforations being spaced from each other three sixteenths of an inch, each strip sheet having a row of spaced aligned integral tab members on opposite edges thereof to engage in a row of opposed spaced slits in spaced adjacent parallel elongated perforated sheets, the tabs being turned in fast facing relation to the opposite face of each spaced parallel, elongated sheet with said spaced, elongated, perforated strip sheet walls defining elongated spaces therebetween to provide perforated walls which define spaced elongated perforated flow-through passages;
therebetween communicating with said aligned passages a said upstream and downstream headers, said elongated perforated sheets and said engaging perforated strip sheets each having tab portions of opposite extremities thereof engaging with said aligned passages in said headers which tab portions are turned to engage the faces of said headers away from the flow stream passages;
a plurality of spaced elongated, sound attenuating strips engaging in the alternate spaces of said spaced fastened perforated strip sheets to provide sound attenuating material for said perforated wall defined, flow-through passages;
a plurality of elongates spaced sound attenuating slabs, each facing an elongated perforated sheet so as to surround said elongated flow passages with sound attenuating material on the four perforated walls of each flow through passage;
each of said sound attenuating slabs and strips being comprised of glass cloth encased mineral wall.
- a flow-through fluid impervious housing constructed of steel panels to include an upstream housing inlet end and a spaced downstream outlet end;
Specification