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US1695435A - Silencer - Google Patents

Silencer Download PDF

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Publication number
US1695435A
US1695435A US55042A US5504225A US1695435A US 1695435 A US1695435 A US 1695435A US 55042 A US55042 A US 55042A US 5504225 A US5504225 A US 5504225A US 1695435 A US1695435 A US 1695435A
Authority
US
United States
Prior art keywords
scroll
silencer
header
sections
joints
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US55042A
Other languages
English (en)
Inventor
Maxim Hiram Percy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxim Silencer Co
Original Assignee
Maxim Silencer Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maxim Silencer Co filed Critical Maxim Silencer Co
Priority to US55042A priority Critical patent/US1695435A/en
Priority to GB22188/26A priority patent/GB258268A/en
Priority to FR627195D priority patent/FR627195A/fr
Priority to DEM96089D priority patent/DE463156C/de
Application granted granted Critical
Publication of US1695435A publication Critical patent/US1695435A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like

Definitions

  • This invention relates to silencers for ap-
  • the header 4.- has attached thereto the si- 56 v plication to the exhausts of oil, gas, air orsteam engines and intakes of compressors, blowers and like mechanisms.
  • One of the principal objects of the invention is to provide a'silencer of the proper design for quieting the noise from such exhausts or intakes without appreciably obstructing the free flow of the gases therethrough. Coupled with this object is one of providin a silencer .of such improved and simplifie construction as will facilitate the manufacture of the same in quantity and in a wide variety of sizes at low manufacturing costs.
  • FIG. 1 is a view of a. silencer showing the exterior shell in section and the silencing unit thereof in elevation;
  • Fig. 2 is a transverse section of the silencer taken along line 2-2 of Fig.1;
  • Fig. 3 is a view of a slightly modified form of silencer shown in longitudinal section.
  • 1 indicates the exterior shell or casing of the silencer which may be in the usual cylindrical form and is preferably of sheet metal.
  • the ends of the shell are provided with suitable flanges 2 by which headers 3 and 4 are secured to the shell through bolts 5.
  • the header 3 is formed with a center opening 6 which may be termed the inlet of the silencer.
  • the outer side of the header 3 adjacent the inlet 0 ening is provided with a suitable flange 7 or a ipe connection to the device to be silence and on the inside of said header 3 a flange 8 is pref-- erably provided to serve as a dam in preventing water of condensation or other waste material draining back through the inlet when the silencer is used in vertical osition.
  • An additional opening 9, adapted to e closed by plug 10, may also be provided in the header 3, as shown, and a similar opening 11 for closure b plug 12 may be provided in the lower side 0 the shell 1, said latter'openings serving when desired as a drain or inlet for water.
  • lencing unit 15 in spaced relation from the header 3 to form an expansion chamber 21 within the shell, and said header 4-is prov 'vided with a center opening 13 therethrough surrounded'by suitable flange 14 for a pi e connection and may be termed the out at opening for the silencer.
  • the silencer is usually attached with the expa.n sion chamber end adjacent the unit to be silenced in which case the gas flow may be in either direction through said inlet and outlet openings according to circumstances.
  • the header 4 of the shell 1 also serves as a header or end closure for the silencin unit 15 which will now be more particular y described.
  • This silencing unit is substantially in the form of a sheet scroll-wound spirally from a core chamber at its axis outwardly to its periphery, as shown clearly in Fi 2.
  • the wall of this scroll is preferabl ofs eet metal to reduce weight and is ma e up into sections 15' to both cheapen the cost of manufacture and to facilitate assembly of the silencer parts.
  • the several sec tions of sheet metal making up the scroll are, each curved to form part of the continuous convolutions of the scroll and the ends of adjacent sections are overlapped upon one'another at joints 16.
  • the sections of the scroll may be continuous for almost an entire convolution and therefore rovide joints 360 degrees apart but in large sizes of silencer and scroll it is desirable to employ sections of smaller angular extent for ease in-man'ufacture and handling and, as shown in-Fig. 2, provide joints 180 degrees apart. Obviously, said oints may be made at angular distances apart even less than 180 degrees if desired.
  • the over lapped joints 16 between ad'acent sections extend'longitudinally and pre erably parallel to the axis of said scroll and are securelyfastened b means of radially disposed tiebolts 17.
  • hese tie bolts 17 also carry spacing collars or thimbles 18 between the spaced wall of the scroll for holding same in this spirally spaced relation.
  • a 1y disposed bolts 19 may likewise be pro- Additional radifastening bolts 21 having screw threaded ends 22 may be riveted or welded to an ularly spaced portions of the scroll sheet with their screw threaded ends 22 extended through the headers for receiving fastening nuts.
  • the header 20.. is somewhat smaller in diameter than header 4 and is referably flanged at its periphery to over ap the sides of the scroll and make a close fit.
  • waves from the explosive noise originating at the exhaust valves of the engine likewise entering the silencer are, by re ated reflections during their course throng the spiral pas sage-way, effectively dissipated in energy so as to be hardly perceptible when issuing from the outlet.
  • the sheet scroll 28 is made up in sections in precisel the same manner as previously described and as shown in Fig. 2.
  • the sections are locked together at their joints and the spiral walls of the scroll are spaced by means of the radial tie bolts 29 and spacing collars 30 similar to 17 and 18.
  • the expansion chamber and exterior shell or casing are omitted.
  • the headers for the scroll comprise disk plates 31 and 32, thelatter of which may be suitably formed with a central opening and tapered throat 33 for connection to a pipe 36 and serving as the inlet to the silencer.
  • a single tie bolt 34 is axially disposed and extended through the header 31 and a bracket 35 formed across the throat 33 for holding the headers 31 and 32 to ether and against the interposed scroll.
  • the gas and sound waves entering by the pipe 35 take a course spirally through the scroll to the periphery there-- of and eventually find an. out et at the end of the spiral passageway at one side of the scroll, similar to the opening indicated at 24 in Fig. 2.
  • This form of silencer is more particularly adapted for installation at the end of an exhaust or intake pipe.
  • a silencer comprising a spiral sheet scroll interposed between header plates to form a continuous closed uninterrupted spiral passage from an axial. hamber to a lateral peripheral. opening, the wall of said scroll being made up of sections each form ing part or the continuous convolutions of said scroll, the joints of the adjacent sections in each successive convolution of said scroll bein located in radial alignment, and means for fastening said sections together at said oints.
  • a silencer comprising a spiral sheet scroll interposed between header plates to form a continuous closed uninterrupted spiral passage from an axial chamber to a lateral peripheral opening, the cross-sectional area of said passage being of substantially greater width axially of scroll than radially of said scroll, the wall of said scroll being made up of sections each forming part of the continuous convolutions of said scroll, the joints of the adjacent sections in each successive convolution of said scroll being located in radial alignment, and means for fastening said sections together at said joints.
  • a silencer comprising, a spiral sheet 'scroll interposed between header plates to form a continuous closed uninterrupted spiral passage from an axial chamber to a lateral peripheral opening,'the wall of said scroll being made up of sections each forming part of the continuous convolutions of said scroll, the joints of the adjacent sections in each successiveconvolution of said scroll being located in alignment, and tie bolts extending through said aligned joints for fastening said sections together.
  • a silencer comprising a spiral sheet scroll interposed between header plates to form a continuous closed uninterrupted spi-.
  • the wall of said scroll being made up of sections each forming part of the continuous convolutions-of said scroll, the joints of the adjacent sections in each successive convolution of said scroll bescroll being made up o sections each form-' ing part ofthe, continuous convolutions of said scroll, the joints of the adjacent sections in each successive convolution of said scroll belng located in radial alignment, and nullally disposed tie bolts each extending Q through several of said joints for fastening said sections together, said tie bolts having.
  • 'A-silencer comprising a spiral sheet scroll interposed between header plates to form a continuous closed uninterrupted spi v spiral sheet ral passage from an axial chamber to a let eral peripheral opening, the wall of said scroll being made up of sections, each form ing part of the continuous convolutions of said scroll, the joints of the adjacent sections in each successive convolution of said scroll being in radial alignment, radially disposed tie bolts, each extending through several of said joints for fastening said sections together, and an exterior shell within which said scroll is mounted and having anexpansion chamber atone side of said scroll.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
US55042A 1925-09-08 1925-09-08 Silencer Expired - Lifetime US1695435A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US55042A US1695435A (en) 1925-09-08 1925-09-08 Silencer
GB22188/26A GB258268A (en) 1925-09-08 1926-09-08 Improvements in silencers for engines, compressors and the like
FR627195D FR627195A (fr) 1925-09-08 1926-09-08 Silencieux pour moteurs à gaz et autres
DEM96089D DE463156C (de) 1925-09-08 1926-09-09 Schalldaempfer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55042A US1695435A (en) 1925-09-08 1925-09-08 Silencer

Publications (1)

Publication Number Publication Date
US1695435A true US1695435A (en) 1928-12-18

Family

ID=21995181

Family Applications (1)

Application Number Title Priority Date Filing Date
US55042A Expired - Lifetime US1695435A (en) 1925-09-08 1925-09-08 Silencer

Country Status (4)

Country Link
US (1) US1695435A (de)
DE (1) DE463156C (de)
FR (1) FR627195A (de)
GB (1) GB258268A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912063A (en) * 1953-04-13 1959-11-10 Barnes Ralph Glenn Muffler
US20050023078A1 (en) * 2002-03-22 2005-02-03 Brower David R. Tuned exhaust system for small engines
CN107476864A (zh) * 2017-09-28 2017-12-15 徐州瑞田工程机械有限公司 一种可更换进气的消声器
CN115434796A (zh) * 2022-08-31 2022-12-06 中国船舶重工集团公司第七一九研究所 基于气泡尺寸调制的水下排气消音器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520286B1 (en) 1996-09-30 2003-02-18 Silentor Holding A/S Silencer and a method of operating a vehicle
DK0934457T4 (da) 1996-09-30 2010-05-10 Silentor Holding As Gasstrømningsdæmper
EP1068430A2 (de) 1998-03-30 2001-01-17 Silentor Notox A/S Schalldämpfer und verfahren zum betreiben eines fahrzeugs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912063A (en) * 1953-04-13 1959-11-10 Barnes Ralph Glenn Muffler
US20050023078A1 (en) * 2002-03-22 2005-02-03 Brower David R. Tuned exhaust system for small engines
US6959782B2 (en) * 2002-03-22 2005-11-01 Tecumseh Products Company Tuned exhaust system for small engines
CN107476864A (zh) * 2017-09-28 2017-12-15 徐州瑞田工程机械有限公司 一种可更换进气的消声器
CN115434796A (zh) * 2022-08-31 2022-12-06 中国船舶重工集团公司第七一九研究所 基于气泡尺寸调制的水下排气消音器

Also Published As

Publication number Publication date
DE463156C (de) 1928-07-23
GB258268A (en) 1927-04-07
FR627195A (fr) 1927-09-28

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