US2325905A - Suppressor - Google Patents

Suppressor Download PDF

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Publication number
US2325905A
US2325905A US41417941A US2325905A US 2325905 A US2325905 A US 2325905A US 41417941 A US41417941 A US 41417941A US 2325905 A US2325905 A US 2325905A
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US
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Grant
Patent type
Prior art keywords
suppressor
casing
mounted
section
rear
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
Inventor
Edward W Caulfield
Original Assignee
Edward W Caulfield
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
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838Construction 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
    • F01N13/1844Mechanical joints
    • F01N13/1855Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/08Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/18Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894Construction 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like

Description

Aug. 3, 1943. E. CAULFIELD 2,325,905

SUPPRESSOR Filed Oct. 8. 1941 2 Sheets-Sheet 2 Iureutm' Patented Aug. 3, 1943 UNITED STATES PATENT OFFICE 2,325,905

- SUPPRESSOR Edward W. Caulfield, St. Petcrsburg, Fla. Application October 8, 1941, Serial No. 414,179

1 Claim.

The present invention relates to new and useful improvements in exhaust noise suppressors, particularly for airplane engines, although it will be understood, of course, that the device may be used in conjunction with any other type of internal combustion engine for which it may be found adapted and desirable.

The primary object of the invention is to provide, in a manner as hereinafter set forth, a suppressor of the character described which will substantially eliminate the noise of the exhaust while creating little or no back pressure on the engine.

Another very important object of the invention is to provide a suppressor of the aforementioned character embodying a novel construction and arran ment whereby the danger of fire will be reduced to a minimum.

Still another very important object of the invention is to provide an internal combustion engine exhaust noise suppressor from which no flame will be discharged, this being a highly desirable consideration, particularly on military airplanes when flying at night.

Other objects of the invention are to provide a suppressor of the character set forth which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, compact and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughoutthe several views, and wherein:

Figure 1 is a view in vertical longitudinal section through a suppressor constructed in accord ance with the present invention.

Figure 2 is a cross-sectional view, taken substantially on the line 2-2 of Figure 1.

Figure 3 is a cross-sectional view. taken substantially on the line 33 of Figure Figure 4 is a detail view in rear elevation, 1ooking at the front spreader from the line 4-4 in Figure 1. V

Figure 5 is a view in side elevation of the device.

Figure 6 is a view in side elevation of the tube and rear spreader unit.

Figure 7 is a view in rear elevation of the unit shown in Figure 6.

Referring now to the drawing in detail, it will be seen that the embodiment of the invention which has been illustrated comprises an elongated casing I of suitable metal or other material, which casing may be of any desired dimensions. The casing l includes detachably connected front and rear sections 2 and 3, respectively. Fixed in the forward end portion of the rear section 3 is a metallic ring 4. The front section 2 slips on the rear sections 3 and is firmly secured thereto by bolts 5 which are threaded into the ring 4.

The front section 2 includes a substantially tapered or conical portion 6 which terminates, at its forward end, in a neck I for connection with the exhaust pipe from the engine (not shown). Welded at 23 in the neck portion 1 and extending rearwardly therefrom in the easing section 2 is a plurality of brackets 8. Mounted on the rear end portions of the brackets 8 is a substantially conical spreader 9. The brackets 8 terminate in inwardly and forwardly bent rear end portions I0 to which the spreader 9 is secured.

The rear end portion l l of the casing section 3 is formed to provide a centrally located, forwardly protruding bell or the like [2. Mounted in the bell l2 and projecting rearwardly therefrom is a discharge neck l3.

Mounted in the front casing section 2 in abutting engagement with the forward end of the section 3 and the ring 4 is a circular, apertured metallic plate M. A bead or rib I5 is welded at 24 in the section 2 and retains the plate M in position against the forward end of the section 3 and the ring 4.

Fixed in the apertures in the plate I4 is a plurality of tapered, rearwardly converging tubes it. Mounted on the rear end portions of the tapered tubes I6 is a comparatively small apertured metallic plate H. In the embodiment shown, the plate I! has projecting from its periphery a plurality of ears l8. Mounted on the ears l8 and extending rearwardly and inwardly therefrom is ,a plurality of rods IS. A substantially conical spreader 20 is mounted on the rods I9 adjacent the rear ends of the tubes It.

It is thought that the manner in which the suppressor functions will be readily apparent from a consideration of the foregoing. Briefly, the exhaust gases from the engine enter the easing section 2, said gases striking the spreader 9 and expanding in the chamber 2i. From the chamber 2| the exhaust gases pass through the tapered, rearwardly converging tubes l6 into the casing section 3. The exhaust gases emerge from the tubes l6, strike the spreader 20 and again expand, this expansion occurring in the chamber 22. As indicated by the arrows in Figure 1 of the drawings, the exhaust gases are directed forwardly by the bell l2 into the conical spreader 20 where they again reverse and discharge through the neck 13. As will be readily apparent, access to the interior of the device may be expeditiously had by disconnecting the casing sections 2 and 3.

It is believed that. the yadventegee of a suppressor. consltriictl'ad in accordance With the present invention will'be readily understood, and

, although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in'the details of construction 7 and in the combination and arrangement of parts drical casing having an inlet in one end and an outlet in its other end, a substantially conical baflle mounted in the casing in spaced, concentric relation thereto and in longitudinal alignmentrwith the inlet, a circular apertured plate mounted in the casing rearwardly of the baiile, a plurality of imperforate, rearwardly tapering and converging tubes mounted in the apertures in may be resorted to which will fall within the'scope of the invention as claimed.

What is claimed is:

the plate, aplatemountedonthe rear. end portionsg'ci the tubes and s'pa'ced ifromfthe" casing;

integral earsradiating from thesecond-named plate, rearwardly projecting rods mounted on said ears, a substantially conical bailie mounted on said rods in spaced, o'ppo sed relation to the 'tubes and spacedjrom the casing, and a hell on -the'rear'encl-o'fthe casing for directing exhaust gases forwardly into the second-named baiiie.

' A suppressor comprising an elongated cylin V EDWARD'W. CAULFIELD.

US2325905A 1941-10-08 1941-10-08 Suppressor Expired - Lifetime US2325905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2325905A US2325905A (en) 1941-10-08 1941-10-08 Suppressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2325905A US2325905A (en) 1941-10-08 1941-10-08 Suppressor

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US2325905A true US2325905A (en) 1943-08-03

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998860A (en) * 1954-09-10 1961-09-05 Wilhelm S Everett Sound silencing and filtering apparatus
US3009529A (en) * 1958-08-07 1961-11-21 Western Electric Co Air nozzle
US3195678A (en) * 1962-02-23 1965-07-20 Industrial Acoustics Co Aerodynamic coupling for jet noise suppressors
US3750840A (en) * 1968-10-08 1973-08-07 Danfoss As Sound absorber for compressors
US4033428A (en) * 1974-12-11 1977-07-05 Ab Fi-Wes Maskinservice Muffler for intermittent blasts of air from pneumatic tools, valves and the like
US4220219A (en) * 1978-09-14 1980-09-02 Flugger Ray T Lightweight muffler and method for muffling noise
US4449993A (en) * 1982-07-19 1984-05-22 Equifab, Inc. Filter module for dust collector system
US4574914A (en) * 1983-11-03 1986-03-11 Flowmaster, Inc. Compact, sound-attenuating muffler for high-performance, internal combustion engine
US4809812A (en) * 1983-11-03 1989-03-07 Flowmaster, Inc. Converging, corridor-based, sound-attenuating muffler and method
US5123502A (en) * 1990-08-30 1992-06-23 Flowmaster, Inc. Muffler assembly with perforated partition for ignition of accumulated fuel and method
US5351481A (en) * 1992-06-26 1994-10-04 Flowmaster, Inc. Muffler assembly with balanced chamber and method
US5936210A (en) * 1998-01-15 1999-08-10 Maremont Exhaust Products, Inc. High performance muffler
US6364054B1 (en) 2000-01-27 2002-04-02 Midas International Corporation High performance muffler
US6419533B2 (en) * 1998-02-04 2002-07-16 Bombardier Inc. Noise reducing system
US6776257B1 (en) 2003-05-13 2004-08-17 Silent Exhaust Systems Ltd. Sound-attenuating muffler having reduced back pressure
US20060157295A1 (en) * 2005-01-14 2006-07-20 Ziehl John C Combination muffler and spark arrester
DE102010039483A1 (en) * 2010-08-18 2012-02-23 Poroson Gmbh Device for sound damping in air flows in e.g. vacuum cleaner, has sound damping element including edge provided with protrusions and recesses, which increase length of edge, where damping element is made of metallic material or plastic
US20140130677A1 (en) * 2012-08-30 2014-05-15 Mgi Coutier Air filtering device in an air intake line of an internal combustion engine
US20140221719A1 (en) * 2013-01-30 2014-08-07 Shanghai Research Institute Of Petrochemical Technology, Sinopec Premixer, radially fixed bed reactor, reaction system for oxidative dehydrogenation

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998860A (en) * 1954-09-10 1961-09-05 Wilhelm S Everett Sound silencing and filtering apparatus
US3009529A (en) * 1958-08-07 1961-11-21 Western Electric Co Air nozzle
US3195678A (en) * 1962-02-23 1965-07-20 Industrial Acoustics Co Aerodynamic coupling for jet noise suppressors
US3750840A (en) * 1968-10-08 1973-08-07 Danfoss As Sound absorber for compressors
US4033428A (en) * 1974-12-11 1977-07-05 Ab Fi-Wes Maskinservice Muffler for intermittent blasts of air from pneumatic tools, valves and the like
US4220219A (en) * 1978-09-14 1980-09-02 Flugger Ray T Lightweight muffler and method for muffling noise
US4449993A (en) * 1982-07-19 1984-05-22 Equifab, Inc. Filter module for dust collector system
US4574914A (en) * 1983-11-03 1986-03-11 Flowmaster, Inc. Compact, sound-attenuating muffler for high-performance, internal combustion engine
US4809812A (en) * 1983-11-03 1989-03-07 Flowmaster, Inc. Converging, corridor-based, sound-attenuating muffler and method
US5123502A (en) * 1990-08-30 1992-06-23 Flowmaster, Inc. Muffler assembly with perforated partition for ignition of accumulated fuel and method
US5351481A (en) * 1992-06-26 1994-10-04 Flowmaster, Inc. Muffler assembly with balanced chamber and method
US5936210A (en) * 1998-01-15 1999-08-10 Maremont Exhaust Products, Inc. High performance muffler
US6419533B2 (en) * 1998-02-04 2002-07-16 Bombardier Inc. Noise reducing system
US6364054B1 (en) 2000-01-27 2002-04-02 Midas International Corporation High performance muffler
US6776257B1 (en) 2003-05-13 2004-08-17 Silent Exhaust Systems Ltd. Sound-attenuating muffler having reduced back pressure
WO2004101960A2 (en) 2003-05-13 2004-11-25 Silent Exhaust Systems Ltd. Sound-attenuating muffler having reduced back pressure
US20060157295A1 (en) * 2005-01-14 2006-07-20 Ziehl John C Combination muffler and spark arrester
DE102010039483A1 (en) * 2010-08-18 2012-02-23 Poroson Gmbh Device for sound damping in air flows in e.g. vacuum cleaner, has sound damping element including edge provided with protrusions and recesses, which increase length of edge, where damping element is made of metallic material or plastic
US20140130677A1 (en) * 2012-08-30 2014-05-15 Mgi Coutier Air filtering device in an air intake line of an internal combustion engine
US20140221719A1 (en) * 2013-01-30 2014-08-07 Shanghai Research Institute Of Petrochemical Technology, Sinopec Premixer, radially fixed bed reactor, reaction system for oxidative dehydrogenation
US9718745B2 (en) * 2013-01-30 2017-08-01 China Petroleum & Chemical Corporation Premixer, radially fixed bed reactor, reaction system for oxidative dehydrogenation
RU2654041C2 (en) * 2013-01-30 2018-05-15 Чайна Петролеум Энд Кемикал Корпорейшн Premixing device, reactor with fixed bed and radial flow and reaction system for oxidative dehydrogenization of butylene

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