US1644794A - Intake silencer - Google Patents

Intake silencer Download PDF

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Publication number
US1644794A
US1644794A US103598A US10359826A US1644794A US 1644794 A US1644794 A US 1644794A US 103598 A US103598 A US 103598A US 10359826 A US10359826 A US 10359826A US 1644794 A US1644794 A US 1644794A
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US
United States
Prior art keywords
inlet
chamber
tube
air
silencer
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
US103598A
Inventor
Alexander V Saharoff
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.)
Worthington Pump and Machinery Corp
Original Assignee
Worthington Pump and Machinery Corp
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 Worthington Pump and Machinery Corp filed Critical Worthington Pump and Machinery Corp
Priority to US103598A priority Critical patent/US1644794A/en
Application granted granted Critical
Publication of US1644794A publication Critical patent/US1644794A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path

Definitions

  • This invention relates to an. intake si lencer particularly designed for use on air compressors and analogous mechanisms wherein air or gas is drawn into the cylim 6 der of the machine, preferably by the suetion of the machine during operation.
  • An object of the present invention is to provide a silencer or muffler which will effectively muflle or reduce the noises caused by air or gases entering a chamber or cylinder of a machine, the said silencer including a pulsating chamber into which the air or gas is drawn by the suction'operation of the mechanism through an inlet tube of smaller area than the pulsating chamber, which inlet tube has a choked or reduced inlet to allow an uninterrupted flow of air into the tube and from the tube into the pulsating chamber, thereby eliminating the noises contingent with the suction of air or gas into the machine as well as eliminating the noise of the back-puif in the suction.
  • Figure 1 is a vertical longitudinal section through the improved silencer.
  • Figure 2 is a vertical cross-section through the silencer taken on the line 2-2 of Figure 1.
  • Figure 3 is ahorizontal section throu h. the silencer taken on the line 3--3 of Fig ure 1.
  • the improved suction or intake muffler includes a casing 1, which is preferably of cylindrical construction, and has one" end open asshown at 2.
  • a plug 1S fitted into the opening 2 and held therein'against displacement by a set screw 4.
  • the plug 3 is provided with a threaded bore 5 into which an inlet nipple 6 is threaded.
  • the bore 5- is countersunk .and threaded and the inlet end of the inlet-tube 7 is threaded into the threaded countersunk portion 8 of the bore 5.
  • the inlet-tube 7 extends longitudinally in a pulsating chamber 9 formed within.
  • the cross-sectional area of the tube 7 is greater than the crosssectional area of the inlet bore 11 thereby providing a restricted or choked entrance into the tube 7 and pulsating chamber 9 which allows an interrupted flow of air into the expansion or pulsating chamber 9.
  • an outer casing forming a pulsation chamber, a tube concentric within said chamber, the said tube having a choked inlet and a single relatively wide, narrow outlet opening into said chainher, the walls of said tube curving inwardly as they approach said outlet In testimon whereof I afiix my signature,

Description

I 1 644%4 06b 11, 1927. A. AROFF 9 9 INTAKE SILENCER Filed April 21, l926 ATTORNEY Patented Och 1L 1%27.
ALEXANDER V. SAHAXEQFF, 9F GINCINHATIE, OHIO, ASSIGNOE T WQETHINGTQI? PUMP AND MACHINERY CQREORATIUN, YORK, N. Y., A CORPORATIQE 01E VIE:-
GINIA.
INTAKE SILEN'CER.
Application 'siea April 21, 1926. Serial No. mates This invention relates to an. intake si lencer particularly designed for use on air compressors and analogous mechanisms wherein air or gas is drawn into the cylim 6 der of the machine, preferably by the suetion of the machine during operation.
An object of the present invention is to provide a silencer or muffler which will effectively muflle or reduce the noises caused by air or gases entering a chamber or cylinder of a machine, the said silencer including a pulsating chamber into which the air or gas is drawn by the suction'operation of the mechanism through an inlet tube of smaller area than the pulsating chamber, which inlet tube has a choked or reduced inlet to allow an uninterrupted flow of air into the tube and from the tube into the pulsating chamber, thereby eliminating the noises contingent with the suction of air or gas into the machine as well as eliminating the noise of the back-puif in the suction.
"With these objects in view, the invention consists in various features of construction and combination of arts, which will be first described in connection with the accompanying drawings, showin an intake silencer of the preferred form em odying the invention, and the features forming the invention will be specifically pointed out in the claim.
Figure 1 is a vertical longitudinal section through the improved silencer.
Figure 2 is a vertical cross-section through the silencer taken on the line 2-2 of Figure 1.
'Figure 3 is ahorizontal section throu h. the silencer taken on the line 3--3 of Fig ure 1.
Referring more particularly to the drawings, the improved suction or intake muffler includes a casing 1, which is preferably of cylindrical construction, and has one" end open asshown at 2. A plug 1S fitted into the opening 2 and held therein'against displacement by a set screw 4. The plug 3 is provided with a threaded bore 5 into which an inlet nipple 6 is threaded. The bore 5- is countersunk .and threaded and the inlet end of the inlet-tube 7 is threaded into the threaded countersunk portion 8 of the bore 5. The inlet-tube 7 extends longitudinally in a pulsating chamber 9 formed within. the casing 1, and extended laterally, as clearly shown in Figures 2 and 3 of the drawing, to provide a relatively thin wide outlet-opening 1 0 from which the air or gas passes into the pulsat ing chamber 9. The walls of the inlet tube 7 curve inwardly as they approach the wide, thin outlet-opening 10. It is preferable to make the area of the outlet-opening 10 greater than the area of the inlet bore 11 of the inlet nipple 6 so as topermit air or gas. to pass from the tube '7, freely into the pulsating chamber 9 where it is permitted to expand and accumulate. The air or gas is drawn from the pulsating chamber 9 through the outlet-opening 12 The outlet-opening 12 is positioned at one side of the pulsating chamber 9 and at the end of the casing remote from the inlet.
The cross-sectional area of the tube 7 is greater than the crosssectional area of the inlet bore 11 thereby providing a restricted or choked entrance into the tube 7 and pulsating chamber 9 which allows an interrupted flow of air into the expansion or pulsating chamber 9. By properly proportioning the pulsating or expansion chamber 9, the pressure in the expansion chamber is kept below atmosphere and the back-puff and noise contingent therewith is absorbed in. the
chamber 9 and muffled and prevented from interfering with the inlet of air through the restricted nozzle opening 11,
It will be understood that the invention is not to be limited to the specific construction or arrangement of parts shown but that these may be modified widely within the inven tion defined by the claim: 7
What I claim is:
In an intake silencer, an outer casing forming a pulsation chamber, a tube concentric within said chamber, the said tube having a choked inlet and a single relatively wide, narrow outlet opening into said chainher, the walls of said tube curving inwardly as they approach said outlet In testimon whereof I afiix my signature,
ALE NDER V SAHAROFFQ and it has its outlet end flattened
US103598A 1926-04-21 1926-04-21 Intake silencer Expired - Lifetime US1644794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US103598A US1644794A (en) 1926-04-21 1926-04-21 Intake silencer

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Application Number Priority Date Filing Date Title
US103598A US1644794A (en) 1926-04-21 1926-04-21 Intake silencer

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US1644794A true US1644794A (en) 1927-10-11

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215164A (en) * 1962-07-05 1965-11-02 Henry F Szczepanski Water hammer dampener
US5025889A (en) * 1989-08-25 1991-06-25 General Motors Corporation Engine noise reducer
US20080047623A1 (en) * 2006-02-03 2008-02-28 Yungrwei Chen Energy attenuation device
US20080053547A1 (en) * 1997-11-24 2008-03-06 Yungrwei Chen Energy attenuation apparatus for a conduit conveying liquid under pressure, system incorporating same, and method of attenuating energy in a conduit
US7347222B2 (en) 2006-02-03 2008-03-25 Fluid Routing Solutions, Inc. Energy attenuation device
US20080210486A1 (en) * 2007-03-02 2008-09-04 Dayco Products, Llc Energy attenuation device
US20090090530A1 (en) * 2007-07-13 2009-04-09 Longyear Tm, Inc. Noise abatement device for a pneumatic tool
US20090294211A1 (en) * 2008-05-28 2009-12-03 Longyear Tm, Inc. Noise reducing device for a pneumatic tool
US20110126541A1 (en) * 2009-12-02 2011-06-02 Longyear Tm, Inc. Muffler system for noise abatement and ice control

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215164A (en) * 1962-07-05 1965-11-02 Henry F Szczepanski Water hammer dampener
US5025889A (en) * 1989-08-25 1991-06-25 General Motors Corporation Engine noise reducer
US20080053547A1 (en) * 1997-11-24 2008-03-06 Yungrwei Chen Energy attenuation apparatus for a conduit conveying liquid under pressure, system incorporating same, and method of attenuating energy in a conduit
US7717135B2 (en) 2006-02-03 2010-05-18 Yh America, Inc. Energy attenuation device
US7347222B2 (en) 2006-02-03 2008-03-25 Fluid Routing Solutions, Inc. Energy attenuation device
US20080047623A1 (en) * 2006-02-03 2008-02-28 Yungrwei Chen Energy attenuation device
US20080210486A1 (en) * 2007-03-02 2008-09-04 Dayco Products, Llc Energy attenuation device
US20090090530A1 (en) * 2007-07-13 2009-04-09 Longyear Tm, Inc. Noise abatement device for a pneumatic tool
US7681690B2 (en) 2007-07-13 2010-03-23 Longyear Tm, Inc. Noise abatement device for a pneumatic tool
US20100155174A1 (en) * 2007-07-13 2010-06-24 Longyear Tm, Inc. Noise abatement device for a pneumatic tool
US7845464B2 (en) 2007-07-13 2010-12-07 Longyear Tm, Inc. Noise abatement device for a pneumatic tool
US20090294211A1 (en) * 2008-05-28 2009-12-03 Longyear Tm, Inc. Noise reducing device for a pneumatic tool
US7735603B2 (en) * 2008-05-28 2010-06-15 Longyear Tm, Inc. Noise reducing device for a pneumatic tool
US20110126541A1 (en) * 2009-12-02 2011-06-02 Longyear Tm, Inc. Muffler system for noise abatement and ice control
US8215449B2 (en) 2009-12-02 2012-07-10 Longyear Tm, Inc. Muffler system for noise abatement and ice control

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