Silencer assembly having single strand fiberglass acoustic pack material

• US 6,332,511 B1
• Filed: 12/07/1999
• Issued: 12/25/2001
• Est. Priority Date: 12/07/1999
• Status: Expired due to Term

• Current Assignee: Ceco Environmental IP Inc. (CECO Environmental Corp.)
• Original Assignee: Burgess-Manning, Inc. (CECO Environmental Corp.)
• Inventors: Stell, James Dennis, Parlato, Michael P., Witt, Stephen
• Primary Examiner(s): Nappi, Robert E.
• Assistant Examiner(s): LOCKETT, KIMBERLY R
• Application Number:
  US09/455,693
• Time in Patent Office: 749 Days
• Field of Search: 181/222, 181/252, 181/224, 181/256, 181/258, 181/255, 181/267, 181/249, 181/247, 181/248, 181/264
• US Class Current: 181/282
• CPC Class Codes: F01N 1/085 using a central core throttling gas passage
• CPC Class Codes: F01N 1/10 in combination with sound-absorbing materials F01N1/125 takes precedence
• CPC Class Codes: F01N 1/24 by using sound-absorbing materials F01N1/04, F01N1/06, F01N1/10, F01N1/14, F01N1/16 take precedence
• CPC Class Codes: F01N 2310/02 Mineral wool, e.g. glass wool, rock wool, asbestos or the like
• CPC Class Codes: G10K 11/161 in systems with fluid flow G10K11/162 takes precedence; gas flow silencers or exhaust apparatus for machines or engines in general or for internal combustion engine F01N, noise absorbers in pipes or pipe systems F16L55/02; noise absorption in air conditioning and ventilation F24F13/24; silencing exhaust or propulsion jets in aircraft B64D33/06

Abstract

A silencer assembly having a cylindrical chamber having a closed cylindrical outer wall, a first end wall and a second end wall, the first end wall having an inlet therein, and the second end wall having an outlet therein, an internal annular chamber proximate the cylindrical outer wall, the internal annular chamber bounded by the cylindrical outer wall and by a perforated cylindrical inner wall, the internal annular chamber containing single strand fiberglass acoustic fill material, the internal annular chamber having no internal barriers therein, and, a perforated generally cylindrically shaped core located inside of the cylindrical chamber positioned in spaced relation to the internal annular chamber and also in spaced relation to the inlet and outlet, creating a generally annular shaped passageway for exhaust gas, the core containing single strand fiberglass acoustic fill material.

Claims

1. A silencer assembly, comprising:

a cylindrical chamber having a closed cylindrical outer wall, a first end wall and a second end wall, said first end wall having an inlet therein, and said second end wall having an outlet therein;

an internal annular chamber proximate said cylindrical outer wall, said internal annular chamber bounded by said cylindrical outer wall and by a perforated cylindrical inner wall, said internal annular chamber containing single strand fiberglass acoustic fill material, said internal annular chamber having no internal barriers separating said single strand fiberglass acoustic fill material; and

,

a perforated generally cylindrically shaped core located inside of said cylindrical chamber positioned in spaced relation to said internal annular chamber and also in spaced relation to said inlet and outlet, creating a generally annular shaped passageway for exhaust gas, said core containing single strand fiberglass acoustic fill material and having no internal physical barriers separating said single strand fiberglass acoustic fill material.

2. A silencer assembly, comprising:

a cylindrical chamber having a closed cylindrical outer wall, a first end wall and a second end wall, said first end wall having an inlet therein, and said second end wall having an outlet therein;

an internal annular chamber proximate said cylindrical outer wall, said internal annular chamber bounded by said cylindrical outer wall and by a perforated cylindrical inner wall, said, internal annular chamber containing acoustic fill material; and

,

a perforated generally cylindrically shaped core located inside of said cylindrical chamber positioned in spaced relation to said internal annular chamber and also in spaced relation to said inlet and outlet, creating a generally annular shaped passageway for exhaust gas, said core containing single strand fiberglass acoustic fill material and having no internal physical barriers separating said single strand fiberglass acoustic fill material.

3. A silencer assembly, comprising:

a cylindrical chamber having a closed cylindrical outer wall, a first end wall and a second end wall, said first end wall having an inlet therein, and said second end wall having an outlet therein;

an internal annular chamber proximate said cylindrical outer wall, said internal annular chamber bounded by said cylindrical outer wall and by a perforated cylindrical inner wall, said internal annular chamber containing single strand fiberglass acoustic fill material, said internal annular chamber having no internal barriers therein; and

,

a perforated generally cylindrically shaped core located inside of said cylindrical chamber positioned in spaced relation to said internal annular chamber and also in spaced relation to said inlet and outlet, creating a generally annular shaped passageway for exhaust gas, said core containing acoustic fill material.

4. A silencer assembly, comprising:

a cylindrical chamber having a closed cylindrical outer wall, a first end wall and a second end wall, said first end wall having an inlet therein, and said second end wall having an outlet therein;

an internal annular chamber proximate said cylindrical outer wall, said internal annular chamber bounded by said cylindrical outer wall and by a perforated cylindrical inner wall, said internal annular chamber containing single strand acoustic fill material, said internal annular chamber having no internal barriers separating said single strand acoustic fill material; and

,

a perforated generally cylindrically shaped core located inside of said cylindrical chamber positioned in spaced relation to said internal annular chamber and also in spaced relation to said inlet and outlet, creating a generally annular shaped passageway for exhaust gas, said core containing single strand acoustic fill material and having no internal physical barriers separating said single strand acoustic fill material.