US20060102420A1 - Muffler for exhaust gas - Google Patents
Muffler for exhaust gas Download PDFInfo
- Publication number
- US20060102420A1 US20060102420A1 US11/272,621 US27262105A US2006102420A1 US 20060102420 A1 US20060102420 A1 US 20060102420A1 US 27262105 A US27262105 A US 27262105A US 2006102420 A1 US2006102420 A1 US 2006102420A1
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- United States
- Prior art keywords
- cleaning member
- chamber
- spark arrestor
- muffler
- muffler according
- 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.)
- Abandoned
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
-
- 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 F01N1/00Â -Â F01N5/00, F01N9/00, F01N11/00
- F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
-
- 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 F01N1/00Â -Â 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
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
- F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
-
- 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
- F01N2230/00—Combination of silencers and other devices
- F01N2230/06—Spark arresters
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/06—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for hand-held tools or portables devices
Definitions
- the present invention relates to a muffler for exhaust gas, especially in a manually guided or portable implement such as a power chain saw, a cut-off machine or the like.
- EP 0 771 391 B1 discloses a muffler having two chambers formed in its housing. A catalytic converter is disposed between the first and the second chamber, and a spark arrestor is disposed at the outlet on the second chamber.
- the exhaust gases that flow into the muffler also contain particles. These particles accumulate in the housing of the muffler and lead to fouling of the housing. The particles can in particular lead to a significant clogging of the spark arrestor. This necessitates frequent maintenance and frequent replacement of the spark arrestor.
- FIG. 1 is a cross-sectional view through a muffler taken along the line I-I in FIG. 2 ;
- FIG. 2 is a cross-sectional view through the muffler of FIG. 1 taken along the line II-II in FIG. 1 ;
- FIG. 3 is a cross-sectional view through the muffler of FIG. 2 taken along the line III-III in FIG. 2 ;
- FIG. 4 is a cross-sectional view through a muffler taken along the line IV-IV in FIG. 5 ;
- FIG. 5 is a cross-sectional view through the muffler of FIG. 4 taken along the line V-V in FIG. 4 ;
- FIG. 6 is a cross-sectional view through the muffler of FIG. 5 taken along the line VI-VI in FIG. 5 ;
- FIG. 7 is an enlarged view of the encircled portion VII in FIG. 4 ;
- FIGS. 8-12 are perspective views of cleaning members.
- the muffler of the present application comprises a housing having an inlet, an outlet, and at least one chamber, and also comprises a cleaning member that is disposed in the chamber, with the cleaning member being movable relative to the muffler housing.
- the movable cleaning member Due to the pressure fluctuations in the housing, the movable cleaning member is thrown or hurled back and forth in the chamber.
- the striking or impact of the cleaning member for example against the inner wall of the housing or against a spark arrestor, loosens the particles that have accumulated on the wall or have adhered thereto. These loosened particles are then conveyed out of the muffler together with the exhaust gases.
- the cleaning member thus continuously effects an automatic or self cleaning of the muffler.
- the cleaning member can have a simple construction as well as a low weight, so that in particular in manually guided implements the overall weight of the implement is not noticeably affected.
- the sound that results when the cleaning member strikes against a wall can, by suitable selection of the cleaning member, be balanced such that the generation of noise is minimal relative to the operating noise of the internal combustion engine.
- the cleaning member is freely movable in the chamber.
- the inner geometry of the chamber, and the outer geometry of the cleaning member it is possible to completely clean the chamber with the cleaning member.
- the cleaning member can be arranged in such a way that it cleans regions that are particularly susceptible to being fouled.
- the outer surface of the cleaning member is advantageously guided with play against the inner wall of the chamber.
- a spark arrestor is disposed at the outlet out of the chamber.
- the spark arrestor is in particular cylindrical, and the cleaning member is advantageously guided with play on the periphery of the spark arrestor.
- dirt particles can easily accumulate or adhere to the spark arrestor. To prevent clogging of the spark arrestor, it must be replaced on a regular basis.
- a cleaning member By disposing a cleaning member on the spark arrestor, dirt particles are continuously removed from the spark arrestor during operation, so that the maintenance intervals can be considerably increased.
- the cleaning member is in particular supported between the chamber wall and the spark arrestor.
- the play relative to the inner wall of the chamber is advantageously greater than the play relative to the spark arrestor.
- the cleaning member preferably strikes against the spark arrestor and cleans it. If the vibrations are strong, the inner wall of the chamber forms a stop or abutment for the cleaning member, so that the spark arrestor cannot be deformed or destroyed by the cleaning member.
- the cleaning member is advantageously movable in a peripheral direction relative to the spark arrestor. It can be advantageous for the cleaning member to be movable in the axial direction of the spark arrestor.
- the cleaning member is in particular movable not only in the axial direction but also in the peripheral direction relative to the spark arrestor.
- the cleaning member is a coil spring.
- the corrugated structure of the coil spring formed by the spring windings leads to a good loosening or removal of dirt particles.
- the cleaning member can also be expedient for the cleaning member to be a ring.
- This ring is advantageously provided with a slot.
- the cleaning member is advantageously also provided with at least one opening or aperture. The slot or aperture or apertures improve the cleaning effect of the member. If the slot is large enough, it is also possible to mount the cleaning member on the spark arrestor in the radial direction relative to the spark arrestor.
- the housing of the muffler is advantageously formed from two half shells between which is disposed a partition that separates a first chamber from a second chamber.
- a catalytic converter can in particular be disposed in the partition.
- a third half shell is advantageously disposed on the partition and forms a third chamber with the partition. Disposing a plurality of chambers one after the other leads to a good dampening effect of the muffler.
- the spark arrestor is in particular disposed at the outlet out of the third chamber. In this connection, the outlet out of the third chamber advantageously opens into the outlet out of the muffler.
- the muffler 1 illustrated in FIG. 1 has a housing 2 , which is formed from a first half shell 3 and a second half shell 4 .
- the two half shells 3 and 4 are interconnected at a rim 5 by being folded over.
- Disposed between the two half shells 3 and 4 is a partition 6 which is held at the rim 5 .
- the partition 6 separates a first chamber 9 , into which flow the exhaust gases of an internal combustion engine, especially a two-cycle engine, from a second chamber 10 .
- the exhaust gases flow into the muffler 1 , i.e. into the housing 2 thereof, via the inlet 18 , which is indicated by dashed lines in FIG. 2 .
- the partition 6 is provided with openings 20 by means of which the exhaust gases can pass out of the first chamber 9 and into the second chamber 10 .
- two sleeves 8 extend through the housing 2 approximately perpendicular to the partition 6 . On that side that faces the first half shell 3 the sleeves 8 are open, and have a base 50 on that side that faces the second half shell 4 . The base 50 rests against a reinforcing plate or sheet 13 that is disposed between the second half shell 4 and the base 50 .
- the muffler 1 has a mounting opening 7 that extends through the base 50 of the sleeves 8 , the reinforcing plate 13 and the second half shell 4 .
- the muffler 1 can be fixed in position on the internal combustion engine at the mounting openings 7 via fastening bolts that can be tightened through the sleeves 8 .
- the partition 6 has a recessed portion 21 ( FIGS. 1 and 3 ) that extends over approximately one fourth of the height, and half of the width, of the muffler 1 .
- the width is measured parallel to the connecting line of the two mounting openings 7
- the height is measured perpendicular thereto in the plane of the partition 6 .
- the recessed portion 21 projects in the direction toward the first half shell 3 .
- a third half shell 22 is positioned in the vicinity of the recessed portion 21 on the opposite side, which faces the second half shell 4 ; the third half shell 22 projects in the direction toward the second half shell 4 .
- the recessed portion 21 together with the third half shell 22 , forms a third chamber 11 .
- the third chamber 11 communicates with the second chamber 10 .
- the third chamber 11 extends over nearly the entire dept of the muffler 1 .
- the depth of the muffler 1 is measured perpendicular to the partition 6 .
- a cleaning member 14 is disposed in the third chamber 11 .
- the cleaning member 14 is embodied as a tubular section, and is freely movable in the third chamber 11 .
- a spark arrestor 15 projects into the third chamber 11 .
- the spark arrestor 15 has a cup-shaped configuration, and therefore has a cylindrical body that is closed off by a base on that side that projects into the chamber 11 .
- the spark arrestor 15 furthermore has a plurality of openings 23 through which the exhaust gases can flow out of the third chamber 11 .
- the spark arrestor 15 is disposed at the outlet 28 out of the chamber 11 .
- the spark arrestor 15 is fixed in position on an adapter 16 , at which is formed the outlet 19 out of the muffler 1 .
- An adapter 16 is screwed into a threaded sleeve 17 , which is positioned in the second half shell 4 .
- the sleeve 17 can, for example, be pressed into the second half shell 4 .
- the exhaust gases flow out of the internal combustion engine and into the muffler 1 .
- great pressure fluctuations result due to the operation of the internal combustion engine.
- the cleaning member 14 is thrown or hurled back and forth in the third chamber 11 .
- the cleaning member 14 strikes against the wall of the chamber 11 and against the spark arrestor 15 , and thereby frees in particular the spark arrestor 15 of particles that have accumulated upon the spark arrestor.
- the mechanical striking of the cleaning member 14 leads to a reduction in size of the particles, so that these particles pass through the spark arrestor 15 and can pass out of the muffler 1 together with the exhaust gases. This prevents the muffler 1 from becoming clogged.
- the spark arrestor 15 thus has to be replaced less frequently, thereby increasing the length of the maintenance intervals.
- FIGS. 4 to 7 illustrate an embodiment of a muffler 31 .
- the same reference numerals designate the same components as in FIGS. 1 to 3 .
- the housing 2 of the muffler 1 is also formed of two half shells 3 and 4 that are interconnected at a rim 5 .
- Fixed in position at the rim 5 is a partition 36 that separates the first chamber 9 from the second chamber 10 .
- a third half shell 32 Positioned at the partition 36 is a third half shell 32 that together with the partition 36 delimits a third chamber 41 .
- the partition 36 has raised portions 33 that extend from the partition in the direction toward the second half shell 4 and project into the third chamber 41 .
- a spark arrestor 35 Disposed in the interior of the third chamber 41 is a spark arrestor 35 that has a plurality of openings 43 .
- the spark arrestor 35 is also cup-shaped, and thus has a cylindrical base body that is closed off by a base 47 ( FIG. 5 ) on that side that projects into the interior of the chamber 41 .
- a cleaning member 34 is disposed on the periphery of the spark arrestor 35 .
- the cleaning member 34 is configured as a coil spring.
- the length of the coil spring is greater than the distance from the base 47 of the cleaning member to the wall of the chamber 41 , so that the cleaning member 34 is supported on the spark arrestor 35 .
- the cleaning member 34 is movable on the spark arrestor 35 in the radial direction, in the axial direction and in the peripheral direction of the spark arrestor. As a result, during operation of the muffler 31 , particles that have accumulated on the spark arrestor 35 are knocked off.
- the exhaust gases flow into the first chamber 9 through the inlet 18 shown in FIG. 5 , and to the second chamber 10 via the openings 20 in the partition 36 as shown in FIG. 6 .
- the partition 36 has an inlet 42 through which the exhaust gases flow into the third chamber 41 from the second chamber 10 .
- the spark arrestor 35 has a plurality of openings 43 through which the exhaust gases flow into the interior of the spark arrestor from the third chamber 41 .
- the spark arrestor 35 is disposed in the outlet 48 out of the third chamber 41 .
- the outlet 48 is provided on an adapter 38 , which at the same time forms the outlet 39 out of the muffler 31 .
- the adapter 38 is screwed into a threaded sleeve 37 that is held in the second half shell 4 . It is thus easy to screw the adapter 38 out of the sleeve 37 in order to be able to replace the spark arrestor 35 .
- the opening 49 through which the spark arrestor 35 projects into the chamber 41 is smaller than the outer diameter of the cleaning member 34 .
- the opening 49 is in particular approximately of the same magnitude as the outer periphery of the spark arrestor 35 , so that only a small quantity of exhaust gas can flow back into the first chamber 9 from the third chamber 41 through the opening 49 .
- FIG. 7 is an enlarged view of the third chamber 41 .
- the cleaning member 34 has a certain amount of play a relative to the spark arrestor 35 .
- the play a is the same over the entire inner periphery of the cleaning member 34 .
- the cleaning member 34 also has the play b relative to the inner wall 40 of the chamber 41 .
- the play b is present at at least three points of the chamber wall 40 that have the smallest spacing relative to the outer surface 29 of the cleaning member 34 .
- the cleaning member 34 has a play b relative to the two raised portions 33 of the partition 36 .
- the third half shell 32 has two raised portions 30 that project into the chamber 41 in the direction toward the cleaning member 34 .
- the cleaning member 34 has a play b at the two raised portions 30 .
- the cleaning member 34 has a play b relative to the two long sides 51 of the third half shell 32 that extend approximately perpendicular to the partition 36 .
- the play b is respectively measured in the radial direction relative to the cylindrical section of the spark arrestor 35 .
- the play b is advantageously larger than the play a.
- the play b is only slightly greater than the play a. If the spark arrestor deforms, the cleaning member 34 strikes against the inner wall 40 of the chamber 41 , which thus forms a stop or abutment. This also accomplishes cleaning of the inner wall 40 of the chamber 41 . The sections of the inner wall 40 of the chamber 41 that are spaced further from the cleaning member 34 do not come into contact with the cleaning member.
- FIGS. 8 to 12 show embodiments of cleaning members.
- FIG. 8 is an enlarged perspective view of the cleaning member 34 of FIGS. 4 to 7 .
- the cleaning member 34 is embodied as a coil spring having four coils. The coils or windings are spaced from one another by a distance c. The corrugated structure formed thereby leads to a good cleaning.
- the cleaning member 34 is light in weight. The axial length of the cleaning member 34 is sufficient to prevent tilting or canting of the cleaning member 34 on the spark arrestor 35 .
- the cleaning member 44 illustrated in FIG. 9 is embodied as a ring and has a wide slot 45 on one side.
- the cleaning member 44 can be spread apart so that it can also be mounted on the spark arrestor 35 in the radial direction.
- the wide slot 45 leads to a low weight of the cleaning member 44 .
- four openings or apertures 46 are provided in the cleaning member 44 so that the cleaning member 44 has only small concentrations of material. The walls of the apertures 46 provide a good cleaning result.
- the cleaning member 24 shown in FIG. 10 is also embodied as a ring. It has a slot 25 that extends at an angle to the central axis 27 of the cleaning member 24 .
- the cleaning member 24 has four openings or apertures 26 , which are approximately circular.
- the cleaning member 54 shown in FIG. 11 is embodied as a ring having a slot 55 that extends parallel to the central axis 57 of the cleaning member 54 .
- the cleaning member 54 can, for example, be embodied as a tube or pipe section.
- FIG. 12 shows a cleaning member 64 that is embodied as a cylindrical roller body.
- the cleaning member 64 has a bore 65 that extends coaxially to the central axis 67 .
- the cleaning member 64 is advantageously disposed so as to be freely movable in a chamber in the muffler housing.
- cleaning members can also be advantageous.
- spark arrestor can be expedient.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
A muffler with a housing having an inlet, an outlet, and at least one chamber is provided with a cleaning member that is disposed in the chamber. The cleaning member is movable relative to the housing.
Description
- The instant application should be granted the priority date of Nov. 13, 2004, the filing date of the corresponding
German patent application 10 2004 054 966.4. - The present invention relates to a muffler for exhaust gas, especially in a manually guided or portable implement such as a power chain saw, a cut-off machine or the like.
- EP 0 771 391 B1 discloses a muffler having two chambers formed in its housing. A catalytic converter is disposed between the first and the second chamber, and a spark arrestor is disposed at the outlet on the second chamber.
- The exhaust gases that flow into the muffler also contain particles. These particles accumulate in the housing of the muffler and lead to fouling of the housing. The particles can in particular lead to a significant clogging of the spark arrestor. This necessitates frequent maintenance and frequent replacement of the spark arrestor.
- It is an object of the present invention to provide a muffler that reduces fouling of the housing.
- This object, and other objects and advantages of the present invention, will appear more clearly from the following specification in conjunction with the accompanying schematic drawings, in which:
-
FIG. 1 is a cross-sectional view through a muffler taken along the line I-I inFIG. 2 ; -
FIG. 2 is a cross-sectional view through the muffler ofFIG. 1 taken along the line II-II inFIG. 1 ; -
FIG. 3 is a cross-sectional view through the muffler ofFIG. 2 taken along the line III-III inFIG. 2 ; -
FIG. 4 is a cross-sectional view through a muffler taken along the line IV-IV inFIG. 5 ; -
FIG. 5 is a cross-sectional view through the muffler ofFIG. 4 taken along the line V-V inFIG. 4 ; -
FIG. 6 is a cross-sectional view through the muffler ofFIG. 5 taken along the line VI-VI inFIG. 5 ; -
FIG. 7 is an enlarged view of the encircled portion VII inFIG. 4 ; and -
FIGS. 8-12 are perspective views of cleaning members. - The muffler of the present application comprises a housing having an inlet, an outlet, and at least one chamber, and also comprises a cleaning member that is disposed in the chamber, with the cleaning member being movable relative to the muffler housing.
- Due to the pressure fluctuations in the housing, the movable cleaning member is thrown or hurled back and forth in the chamber. The striking or impact of the cleaning member, for example against the inner wall of the housing or against a spark arrestor, loosens the particles that have accumulated on the wall or have adhered thereto. These loosened particles are then conveyed out of the muffler together with the exhaust gases. The cleaning member thus continuously effects an automatic or self cleaning of the muffler. The cleaning member can have a simple construction as well as a low weight, so that in particular in manually guided implements the overall weight of the implement is not noticeably affected. The sound that results when the cleaning member strikes against a wall can, by suitable selection of the cleaning member, be balanced such that the generation of noise is minimal relative to the operating noise of the internal combustion engine.
- A straightforward design results if the cleaning member is freely movable in the chamber. By means of suitable selection of the inner geometry of the chamber, and the outer geometry of the cleaning member, it is possible to completely clean the chamber with the cleaning member. However, it can also be advantageous to guide the cleaning member with play in the chamber. In particular, the cleaning member can be arranged in such a way that it cleans regions that are particularly susceptible to being fouled. The outer surface of the cleaning member is advantageously guided with play against the inner wall of the chamber.
- To prevent discharge of glowing particles from the muffler, and to satisfy local regulations, a spark arrestor is disposed at the outlet out of the chamber. By disposing the cleaning member in the chamber in which the spark arrestor is disposed, fouling of the spark arrestor can be reduced. The spark arrestor is in particular cylindrical, and the cleaning member is advantageously guided with play on the periphery of the spark arrestor. During operation of the muffler, dirt particles can easily accumulate or adhere to the spark arrestor. To prevent clogging of the spark arrestor, it must be replaced on a regular basis. By disposing a cleaning member on the spark arrestor, dirt particles are continuously removed from the spark arrestor during operation, so that the maintenance intervals can be considerably increased.
- The cleaning member is in particular supported between the chamber wall and the spark arrestor. The play relative to the inner wall of the chamber is advantageously greater than the play relative to the spark arrestor. Thus, during operation, the cleaning member preferably strikes against the spark arrestor and cleans it. If the vibrations are strong, the inner wall of the chamber forms a stop or abutment for the cleaning member, so that the spark arrestor cannot be deformed or destroyed by the cleaning member. The cleaning member is advantageously movable in a peripheral direction relative to the spark arrestor. It can be advantageous for the cleaning member to be movable in the axial direction of the spark arrestor. The cleaning member is in particular movable not only in the axial direction but also in the peripheral direction relative to the spark arrestor.
- A straightforward embodiment results if the cleaning member is a coil spring. The corrugated structure of the coil spring formed by the spring windings leads to a good loosening or removal of dirt particles. However, it can also be expedient for the cleaning member to be a ring. This ring is advantageously provided with a slot. The cleaning member is advantageously also provided with at least one opening or aperture. The slot or aperture or apertures improve the cleaning effect of the member. If the slot is large enough, it is also possible to mount the cleaning member on the spark arrestor in the radial direction relative to the spark arrestor.
- The housing of the muffler is advantageously formed from two half shells between which is disposed a partition that separates a first chamber from a second chamber. A catalytic converter can in particular be disposed in the partition. A third half shell is advantageously disposed on the partition and forms a third chamber with the partition. Disposing a plurality of chambers one after the other leads to a good dampening effect of the muffler. By connecting the third half shell to the partition, the third chamber can be easily formed with few additional components. The spark arrestor is in particular disposed at the outlet out of the third chamber. In this connection, the outlet out of the third chamber advantageously opens into the outlet out of the muffler.
- Further specific features of the present application will be described in detail subsequently.
- Referring now to the drawings in detail, the
muffler 1 illustrated inFIG. 1 has ahousing 2, which is formed from afirst half shell 3 and asecond half shell 4. The twohalf shells rim 5 by being folded over. Disposed between the twohalf shells partition 6 which is held at therim 5. Thepartition 6 separates afirst chamber 9, into which flow the exhaust gases of an internal combustion engine, especially a two-cycle engine, from asecond chamber 10. - The exhaust gases flow into the
muffler 1, i.e. into thehousing 2 thereof, via theinlet 18, which is indicated by dashed lines inFIG. 2 . As furthermore shown inFIG. 2 , thepartition 6 is provided withopenings 20 by means of which the exhaust gases can pass out of thefirst chamber 9 and into thesecond chamber 10. As shown inFIGS. 1 and 2 , twosleeves 8 extend through thehousing 2 approximately perpendicular to thepartition 6. On that side that faces thefirst half shell 3 thesleeves 8 are open, and have a base 50 on that side that faces thesecond half shell 4. Thebase 50 rests against a reinforcing plate orsheet 13 that is disposed between thesecond half shell 4 and thebase 50. At eachsleeve 8, themuffler 1 has a mountingopening 7 that extends through thebase 50 of thesleeves 8, the reinforcingplate 13 and thesecond half shell 4. Themuffler 1 can be fixed in position on the internal combustion engine at the mountingopenings 7 via fastening bolts that can be tightened through thesleeves 8. - The
partition 6 has a recessed portion 21 (FIGS. 1 and 3 ) that extends over approximately one fourth of the height, and half of the width, of themuffler 1. In this connection, the width is measured parallel to the connecting line of the two mountingopenings 7, and the height is measured perpendicular thereto in the plane of thepartition 6. The recessedportion 21 projects in the direction toward thefirst half shell 3. Athird half shell 22 is positioned in the vicinity of the recessedportion 21 on the opposite side, which faces thesecond half shell 4; the thirdhalf shell 22 projects in the direction toward thesecond half shell 4. The recessedportion 21, together with the thirdhalf shell 22, forms athird chamber 11. By means of aninlet 12 in therecess portion 21, thethird chamber 11 communicates with thesecond chamber 10. Thethird chamber 11 extends over nearly the entire dept of themuffler 1. The depth of themuffler 1 is measured perpendicular to thepartition 6. - A cleaning
member 14 is disposed in thethird chamber 11. The cleaningmember 14 is embodied as a tubular section, and is freely movable in thethird chamber 11. Aspark arrestor 15 projects into thethird chamber 11. Thespark arrestor 15 has a cup-shaped configuration, and therefore has a cylindrical body that is closed off by a base on that side that projects into thechamber 11. Thespark arrestor 15 furthermore has a plurality ofopenings 23 through which the exhaust gases can flow out of thethird chamber 11. - As shown in
FIG. 3 , thespark arrestor 15 is disposed at theoutlet 28 out of thechamber 11. Thespark arrestor 15 is fixed in position on anadapter 16, at which is formed theoutlet 19 out of themuffler 1. Anadapter 16 is screwed into a threadedsleeve 17, which is positioned in thesecond half shell 4. Thesleeve 17 can, for example, be pressed into thesecond half shell 4. - During operation, the exhaust gases flow out of the internal combustion engine and into the
muffler 1. In this connection, great pressure fluctuations result due to the operation of the internal combustion engine. Due to these fluctuations, the cleaningmember 14 is thrown or hurled back and forth in thethird chamber 11. The cleaningmember 14 strikes against the wall of thechamber 11 and against thespark arrestor 15, and thereby frees in particular thespark arrestor 15 of particles that have accumulated upon the spark arrestor. The mechanical striking of the cleaningmember 14 leads to a reduction in size of the particles, so that these particles pass through thespark arrestor 15 and can pass out of themuffler 1 together with the exhaust gases. This prevents themuffler 1 from becoming clogged. Thespark arrestor 15 thus has to be replaced less frequently, thereby increasing the length of the maintenance intervals. - FIGS. 4 to 7 illustrate an embodiment of a
muffler 31. The same reference numerals designate the same components as in FIGS. 1 to 3. Thehousing 2 of themuffler 1 is also formed of twohalf shells rim 5. Fixed in position at therim 5 is apartition 36 that separates thefirst chamber 9 from thesecond chamber 10. Positioned at thepartition 36 is a thirdhalf shell 32 that together with thepartition 36 delimits athird chamber 41. In the region of the thirdhalf shell 32, thepartition 36 has raisedportions 33 that extend from the partition in the direction toward thesecond half shell 4 and project into thethird chamber 41. Disposed in the interior of thethird chamber 41 is aspark arrestor 35 that has a plurality ofopenings 43. Thespark arrestor 35 is also cup-shaped, and thus has a cylindrical base body that is closed off by a base 47 (FIG. 5 ) on that side that projects into the interior of thechamber 41. A cleaningmember 34 is disposed on the periphery of thespark arrestor 35. - As shown in
FIGS. 5 and 6 , the cleaningmember 34 is configured as a coil spring. The length of the coil spring is greater than the distance from thebase 47 of the cleaning member to the wall of thechamber 41, so that the cleaningmember 34 is supported on thespark arrestor 35. However, the cleaningmember 34 is movable on thespark arrestor 35 in the radial direction, in the axial direction and in the peripheral direction of the spark arrestor. As a result, during operation of themuffler 31, particles that have accumulated on thespark arrestor 35 are knocked off. - During operation, the exhaust gases flow into the
first chamber 9 through theinlet 18 shown inFIG. 5 , and to thesecond chamber 10 via theopenings 20 in thepartition 36 as shown inFIG. 6 . At the level of thethird chamber 41, thepartition 36 has aninlet 42 through which the exhaust gases flow into thethird chamber 41 from thesecond chamber 10. Thespark arrestor 35 has a plurality ofopenings 43 through which the exhaust gases flow into the interior of the spark arrestor from thethird chamber 41. Thespark arrestor 35 is disposed in theoutlet 48 out of thethird chamber 41. Theoutlet 48 is provided on anadapter 38, which at the same time forms theoutlet 39 out of themuffler 31. Theadapter 38 is screwed into a threadedsleeve 37 that is held in thesecond half shell 4. It is thus easy to screw theadapter 38 out of thesleeve 37 in order to be able to replace thespark arrestor 35. - The
opening 49 through which thespark arrestor 35 projects into thechamber 41 is smaller than the outer diameter of the cleaningmember 34. Thus, the cleaningmember 34 remains in thethird chamber 41 during replacement of thespark arrestor 35. Theopening 49 is in particular approximately of the same magnitude as the outer periphery of thespark arrestor 35, so that only a small quantity of exhaust gas can flow back into thefirst chamber 9 from thethird chamber 41 through theopening 49. -
FIG. 7 is an enlarged view of thethird chamber 41. Here it can be seen that the cleaningmember 34 has a certain amount of play a relative to thespark arrestor 35. In the position of the cleaningmember 34 shown inFIG. 7 , where the cleaning member is concentric to thespark arrestor 35, the play a is the same over the entire inner periphery of the cleaningmember 34. The cleaningmember 34 also has the play b relative to theinner wall 40 of thechamber 41. The play b is present at at least three points of thechamber wall 40 that have the smallest spacing relative to theouter surface 29 of the cleaningmember 34. For example, in the illustrated embodiment the cleaningmember 34 has a play b relative to the two raisedportions 33 of thepartition 36. At the side opposite thepartition 36, the thirdhalf shell 32 has two raisedportions 30 that project into thechamber 41 in the direction toward the cleaningmember 34. The cleaningmember 34 has a play b at the two raisedportions 30. Similarly, the cleaningmember 34 has a play b relative to the twolong sides 51 of the thirdhalf shell 32 that extend approximately perpendicular to thepartition 36. In this connection, the play b is respectively measured in the radial direction relative to the cylindrical section of thespark arrestor 35. The play b is advantageously larger than the play a. As a result, during operation, the cleaningmember 34 strikes merely against thespark arrestor 35 and frees it of particles. If great pressure fluctuations or strong vibrations are present, movement of the cleaningmember 34 can lead to deformation of thespark arrestor 35. Therefore, in order to prevent damage to thespark arrestor 35, the play b is only slightly greater than the play a. If the spark arrestor deforms, the cleaningmember 34 strikes against theinner wall 40 of thechamber 41, which thus forms a stop or abutment. This also accomplishes cleaning of theinner wall 40 of thechamber 41. The sections of theinner wall 40 of thechamber 41 that are spaced further from the cleaningmember 34 do not come into contact with the cleaning member. - FIGS. 8 to 12 show embodiments of cleaning members.
FIG. 8 is an enlarged perspective view of the cleaningmember 34 of FIGS. 4 to 7. The cleaningmember 34 is embodied as a coil spring having four coils. The coils or windings are spaced from one another by a distance c. The corrugated structure formed thereby leads to a good cleaning. The cleaningmember 34 is light in weight. The axial length of the cleaningmember 34 is sufficient to prevent tilting or canting of the cleaningmember 34 on thespark arrestor 35. - The cleaning
member 44 illustrated inFIG. 9 is embodied as a ring and has awide slot 45 on one side. By means of theslot 45, the cleaningmember 44 can be spread apart so that it can also be mounted on thespark arrestor 35 in the radial direction. Thewide slot 45 leads to a low weight of the cleaningmember 44. In addition, four openings orapertures 46 are provided in the cleaningmember 44 so that the cleaningmember 44 has only small concentrations of material. The walls of theapertures 46 provide a good cleaning result. - The cleaning
member 24 shown inFIG. 10 is also embodied as a ring. It has aslot 25 that extends at an angle to thecentral axis 27 of the cleaningmember 24. The cleaningmember 24 has four openings orapertures 26, which are approximately circular. - The cleaning
member 54 shown inFIG. 11 is embodied as a ring having aslot 55 that extends parallel to thecentral axis 57 of the cleaningmember 54. The cleaningmember 54 can, for example, be embodied as a tube or pipe section. -
FIG. 12 shows a cleaningmember 64 that is embodied as a cylindrical roller body. The cleaningmember 64 has abore 65 that extends coaxially to thecentral axis 67. The cleaningmember 64 is advantageously disposed so as to be freely movable in a chamber in the muffler housing. - Other forms or shapes of cleaning members can also be advantageous. In addition, other forms or shapes of the spark arrestor can be expedient.
- The specification incorporates by reference the disclosure of
German priority document 10 2004 054 966.4 filed 13 Nov. 2004. - The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.
Claims (16)
1. A muffler for exhaust gas, comprising:
a housing having an inlet, an outlet, and at least one chamber; and
a cleaning member that is disposed in said at least one chamber, wherein said cleaning member is movable relative to said housing.
2. A muffler according to claim 1 , wherein said cleaning member is freely movable in said at least one chamber.
3. A muffler according to claim 1 , wherein said cleaning member is guided in said at least one chamber with play.
4. A muffler according to claim 3 , wherein an outer surface of said cleaning member is guided with play against an inner wall of said at least one chamber.
5. A muffler according to claim 1 , wherein a spark arrestor is disposed at an outlet out of said at least one chamber.
6. A muffler according to claim 5 , wherein said spark arrestor has a cylindrical configuration, and wherein said cleaning member is guided with play on a periphery of said spark arrestor.
7. A muffler according to claim 6 , wherein a play of an outer surface of said cleaning member relative to an inner wall of said at least one chamber is greater than said play of said cleaning member relative to said spark arrestor.
8. A muffler according to claim 5 , wherein said cleaning member is movable relative to said spark arrestor in a peripheral direction of said spark arrestor.
9. A muffler according to claim 5 , wherein said cleaning member is movable in an axial direction of said spark arrestor.
10. A muffler according to claim 5 , wherein said cleaning member is a coil spring.
11. A muffler according to claim 1 , wherein said cleaning member is a ring.
12. A muffler according to claim 11 , wherein said ring is provided with a slot.
13. A muffler according to claim 11 , wherein said cleaning member is provided with at least one opening or aperture.
14. A muffler according to claim 1 , wherein said housing is formed of two half shells, wherein a partition is disposed between said half shells and wherein said partition separates a first chamber from a second chamber.
15. A muffler according to claim 14 , wherein a third half shell is disposed on said partition, and wherein said third half shell forms a third chamber with said partition.
16. A muffler according to claim 15 , wherein a spark arrestor is disposed at an outlet out of said third chamber.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004054966A DE102004054966A1 (en) | 2004-11-13 | 2004-11-13 | exhaust silencer |
DE102004054966.4 | 2004-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060102420A1 true US20060102420A1 (en) | 2006-05-18 |
Family
ID=36273828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/272,621 Abandoned US20060102420A1 (en) | 2004-11-13 | 2005-11-14 | Muffler for exhaust gas |
Country Status (3)
Country | Link |
---|---|
US (1) | US20060102420A1 (en) |
CN (1) | CN1773085A (en) |
DE (1) | DE102004054966A1 (en) |
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US20080245604A1 (en) * | 2006-08-29 | 2008-10-09 | Tecumseh Power Company | Passive secondary air muffler |
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Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1387003A (en) * | 1920-02-14 | 1921-08-09 | Edward G Hedges | Antifouling muffler for flush-pipes |
US1721385A (en) * | 1926-08-26 | 1929-07-16 | Furnivall William Henry Graham | Exhaust silencer |
US3798769A (en) * | 1972-01-25 | 1974-03-26 | Mc Culloch Corp | Apparatus for reducing the operating noise of a chain saw |
US4026072A (en) * | 1976-08-09 | 1977-05-31 | Dremann George H | Self-cleaning muffler for an abrasive blast system |
US4039452A (en) * | 1976-11-15 | 1977-08-02 | Fernandez John J | Self-cleaning filter |
US4296780A (en) * | 1978-06-21 | 1981-10-27 | A. B. Carl Munters | Apparatus including throttling device for use in ventilation duct |
US4603001A (en) * | 1980-10-10 | 1986-07-29 | Ward Raymond E | Apparatus and method for filtering a fluid |
US4872528A (en) * | 1988-08-01 | 1989-10-10 | Nelson Industries Inc. | Muffler construction |
US5451728A (en) * | 1992-11-19 | 1995-09-19 | Wci Outdoor Products, Inc. | Muffler for two-cycle internal combustion engine and method of assembly |
US5638786A (en) * | 1996-08-16 | 1997-06-17 | Ford Motor Company | Self-cleaning air filter for a fuel vapor recovery system |
US5722237A (en) * | 1995-10-20 | 1998-03-03 | Kioritz Corporation | Muffler structure for internal combustion engine |
US5866859A (en) * | 1995-02-14 | 1999-02-02 | Aktiebolaget Electrolux | Spark arresting structure for a muffler having a catalytic converter |
US5883342A (en) * | 1996-05-25 | 1999-03-16 | Andreas Stihl Ag & Co. | Muffling device for combustion engines |
US6164410A (en) * | 1999-01-07 | 2000-12-26 | Andreas Stihl Ag & Co. | Exhaust gas muffler |
US6393835B1 (en) * | 1998-08-01 | 2002-05-28 | Andreas Stihl Ag & Co. | Exhaust muffler comprising a catalytic converter |
US6422338B1 (en) * | 1999-06-01 | 2002-07-23 | Andreas Stihl Ag & Co. | Exhaust gas muffler for internal combustion engines |
US6540046B1 (en) * | 2001-08-06 | 2003-04-01 | Nelson Industries, Inc. | Compact economical spark arrestor and muffler |
US7293629B2 (en) * | 2004-01-09 | 2007-11-13 | Honda Motor Co., Ltd. | Exhaust apparatus for small-sized engine |
-
2004
- 2004-11-13 DE DE102004054966A patent/DE102004054966A1/en not_active Withdrawn
-
2005
- 2005-11-14 CN CNA2005101246476A patent/CN1773085A/en active Pending
- 2005-11-14 US US11/272,621 patent/US20060102420A1/en not_active Abandoned
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1387003A (en) * | 1920-02-14 | 1921-08-09 | Edward G Hedges | Antifouling muffler for flush-pipes |
US1721385A (en) * | 1926-08-26 | 1929-07-16 | Furnivall William Henry Graham | Exhaust silencer |
US3798769A (en) * | 1972-01-25 | 1974-03-26 | Mc Culloch Corp | Apparatus for reducing the operating noise of a chain saw |
US4026072A (en) * | 1976-08-09 | 1977-05-31 | Dremann George H | Self-cleaning muffler for an abrasive blast system |
US4039452A (en) * | 1976-11-15 | 1977-08-02 | Fernandez John J | Self-cleaning filter |
US4296780A (en) * | 1978-06-21 | 1981-10-27 | A. B. Carl Munters | Apparatus including throttling device for use in ventilation duct |
US4603001A (en) * | 1980-10-10 | 1986-07-29 | Ward Raymond E | Apparatus and method for filtering a fluid |
US4872528A (en) * | 1988-08-01 | 1989-10-10 | Nelson Industries Inc. | Muffler construction |
US5451728A (en) * | 1992-11-19 | 1995-09-19 | Wci Outdoor Products, Inc. | Muffler for two-cycle internal combustion engine and method of assembly |
US5866859A (en) * | 1995-02-14 | 1999-02-02 | Aktiebolaget Electrolux | Spark arresting structure for a muffler having a catalytic converter |
US5722237A (en) * | 1995-10-20 | 1998-03-03 | Kioritz Corporation | Muffler structure for internal combustion engine |
US5883342A (en) * | 1996-05-25 | 1999-03-16 | Andreas Stihl Ag & Co. | Muffling device for combustion engines |
US5638786A (en) * | 1996-08-16 | 1997-06-17 | Ford Motor Company | Self-cleaning air filter for a fuel vapor recovery system |
US6393835B1 (en) * | 1998-08-01 | 2002-05-28 | Andreas Stihl Ag & Co. | Exhaust muffler comprising a catalytic converter |
US6164410A (en) * | 1999-01-07 | 2000-12-26 | Andreas Stihl Ag & Co. | Exhaust gas muffler |
US6422338B1 (en) * | 1999-06-01 | 2002-07-23 | Andreas Stihl Ag & Co. | Exhaust gas muffler for internal combustion engines |
US6540046B1 (en) * | 2001-08-06 | 2003-04-01 | Nelson Industries, Inc. | Compact economical spark arrestor and muffler |
US7293629B2 (en) * | 2004-01-09 | 2007-11-13 | Honda Motor Co., Ltd. | Exhaust apparatus for small-sized engine |
Cited By (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080245604A1 (en) * | 2006-08-29 | 2008-10-09 | Tecumseh Power Company | Passive secondary air muffler |
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WO2010104615A1 (en) * | 2009-03-13 | 2010-09-16 | Suncoke Energy, Inc. | Cleanable in situ spark arrestor |
US20100229727A1 (en) * | 2009-03-13 | 2010-09-16 | Suncoke Energy, Inc. | Cleanable in situ spark arrestor |
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US9169439B2 (en) | 2012-08-29 | 2015-10-27 | Suncoke Technology And Development Llc | Method and apparatus for testing coal coking properties |
US10053627B2 (en) | 2012-08-29 | 2018-08-21 | Suncoke Technology And Development Llc | Method and apparatus for testing coal coking properties |
US9193913B2 (en) | 2012-09-21 | 2015-11-24 | Suncoke Technology And Development Llc | Reduced output rate coke oven operation with gas sharing providing extended process cycle |
US9121319B2 (en) | 2012-10-16 | 2015-09-01 | Universal Acoustic & Emission Technologies | Low pressure drop, high efficiency spark or particulate arresting devices and methods of use |
US10016714B2 (en) | 2012-12-28 | 2018-07-10 | Suncoke Technology And Development Llc | Systems and methods for removing mercury from emissions |
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DE102004054966A1 (en) | 2006-05-18 |
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