WO2013009344A1 - Method of insulating an exhaust device - Google Patents
Method of insulating an exhaust device Download PDFInfo
- Publication number
- WO2013009344A1 WO2013009344A1 PCT/US2011/065507 US2011065507W WO2013009344A1 WO 2013009344 A1 WO2013009344 A1 WO 2013009344A1 US 2011065507 W US2011065507 W US 2011065507W WO 2013009344 A1 WO2013009344 A1 WO 2013009344A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- sheet
- securing
- around
- foil
- Prior art date
Links
Classifications
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- 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
- F01N13/14—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 having thermal insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- F01N13/14—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 having thermal insulation
- F01N13/148—Multiple layers of insulating material
-
- 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
-
- 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
- F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/03—Catalysts or parts thereof
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/20—Exhaust treating devices having provisions not otherwise provided for for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
-
- 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/04—Metallic wool, e.g. steel wool, copper wool 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/14—Wire mesh fabric, woven glass cloth 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
-
- 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
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
-
- 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
- F01N2510/00—Surface coverings
- F01N2510/02—Surface coverings for thermal insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49345—Catalytic device making
Definitions
- This invention relates to exhaust gas aftertreatment and/or acoustic systems and the devices used therein that utilize external insulation blankets.
- Heat insulating batts and blankets are utilized in exhaust gas systems in order to provide heat insulation for acoustic and aftertreatment devices of the system to control the heat exchange to and from the devices. It is known, for example, to place heat insulating blankets between adjacent wall surfaces of such devices with the material of the heat insulation blanket being compressed to provide a desired installed density for the material to help maintain the heat insulating blanket in its mounted position via frictional forces between the blanket and the adjacent wall surfaces. Such a structure is shown in U.S. Serial No. 12/696,347, filed January 29, 2010 by Keith Olivier et al., entitled “Method of Producing an Insulated Exhaust Device", the disclosure of which is hereby incorporated by reference. It is also known to provide heat insulation blankets around the exterior of such exhaust gas system devices.
- the heat insulation properties of the blanket are dependent on, inter alia, the density of the blanket, and proper design of such devices requires that the density of the blanket be considered. It can, nonetheless, be difficult to ensure that the proper density/compression is provided and maintained for such blankets, particularly with external insulation blankets which are on the outer side of the devices.
- the present invention is directed to overcoming one or more of the problems set forth above.
- a method of providing external insulation for an exhaust gas aftertreatment or acoustic device including the steps of (a) securing a sheet of insulating material around the device, (b) positioning a wire sleeve over the sheet and device, the wires of the sleeve being configured whereby axial extension of the sleeve biases the sleeve toward a smaller sleeve diameter, (c) securing one end of the sleeve adjacent one end of the sheet, (d) pulling the other end of the sleeve in an axial direction relative to the sleeve to bias the sleeve radially inwardly around the insulating material sheet, and (e) securing the other end of the sleeve adjacent the other end of the sheet.
- the wires are woven together. In another form, the wires are knitted.
- the sleeve pulling step includes pulling the other sleeve end sufficiently whereby the radially inward bias of the sleeve applies a compressive force to the insulating material.
- Another form of this aspect of the present invention includes securing a sheet of foil around the insulating material sheet prior to the sleeve positioning step, wherein the wire sleeve is positioned over the foil sheet in the positioning step.
- the foil sheet is stainless steel.
- the foil sheet securing step includes welding the foil sheet around its edges to secure the foil sheet around the insulating material sheet.
- the securing steps comprise welding the wire sleeve to opposite ends of the insulated device.
- the device has a metallic outer shell and the insulating material sheet securing step secures the insulating material sheet around the shell.
- the device outer shell is substantially cylindrical and the sleeve pulling step includes pulling the other sleeve end sufficiently whereby the radially inward bias of the sleeve applies a substantially uniform compressive force to the insulating material.
- a method of providing external insulation for an exhaust gas aftertreatment or acoustic device including the steps of (a) securing an insulating blanket around the exterior of the device, (b) securing a sheet of foil around the insulating blanket, (c) interconnecting a plurality of wires into a sleeve oriented in an axial direction by a selected one of knitting or interweaving, whereby extending the sleeve in the axial direction biases the sleeve radially inwardly, (d) positioning the wire sleeve around the foil sheet, (e) securing one end of the wire sleeve adjacent one end of the insulating blanket, (f) pulling the other end of the sleeve in the axial direction to bias the sleeve radially inwardly sufficiently to apply a compressive force to the insulating blanket, and (g) securing the other end of the sleeve adjacent
- the foil sheet is stainless steel.
- the foil sheet securing step includes welding the foil sheet around its edges to secure the foil sheet around the insulating blanket.
- the securing steps comprise welding the wire sleeve at opposite ends of the insulating blanket.
- the device has a metallic outer shell and the insulating blanket securing step secures the insulating material sheet around the shell.
- the device outer shell is substantially cylindrical and the sleeve pulling step includes pulling the other sleeve end sufficiently whereby the radially inward bias of the sleeve applies a substantially uniform compressive force to the insulating material.
- Figure 1 is a perspective view of generally illustrating a cylindrical device, such as an exhaust gas aftertreatment or acoustic device, which may be insulated according to the present invention
- Figure 2 illustrates the step of wrapping an external blanket around the Fig. 1 device
- Figure 3 illustrates the step of wrapping a foil around the Fig. 1 device wrapped in the external blanket shown in Fig. 2;
- Figure 4 illustrates the step of securing the foil of Fig. 3 by welding its edges
- Figure 5 illustrates the step of locating a wire sleeve over the blanket and foil of Figs. 2 and 3 on the device of Fig. 1 ;
- Figures 6-7 illustrates the step of securing one end of the wire sleeve of Fig. 5 to one end of the device of Fig. 1 ;
- Figure 8 illustrates the step of pulling the wire sleeve axially over the blanket and foil wrapped device of Fig. 8;
- Fig. 9 illustrates the step of securing the other end of the wire sleeve to the other end of the device.
- the present invention may be used, for example, in an exhaust gas system such as a diesel exhaust gas aftertreatment system to treat the exhaust from a diesel combustion process (e.g., a diesel compression engine).
- the exhaust will typically contain oxides of nitrogen (NO x ) such as nitric oxide (NO) and nitrogen dioxide (N0 2 ) among others, particulate matter (PM), hydrocarbons, carbon monoxide (CO), and other combustion by-products.
- the system may include one or more exhaust gas acoustic and/or aftertreatment devices or components.
- Examples of such devices include catalytic converters, diesel oxidation catalysts, diesel particulate filters, gas particulate filters, lean NO x traps, selective catalytic reduction monoliths, burners, manifolds, connecting pipes, mufflers, resonators, tail pipes, emission control system enclosure boxes, insulation rings, insulated end cones, insulated end caps, insulated inlet pipes, and insulated outlet pipes, all of any cross- sectional geometry, many of which are known.
- some of the foregoing devices may be strictly metallic components with a central core through which the exhaust flows, and other of the devices may include a core in the form of a ceramic monolithic structure and/or a woven metal structure through which the exhaust flows.
- These devices are conventionally used in motor vehicles (diesel or gasoline), construction equipment, locomotive engine applications (diesel or gasoline), marine engine applications (diesel or gasoline), small internal combustion engines (diesel or gasoline), and stationary power generation (diesel or gasoline).
- the present invention is directed toward providing proper insulation around the exterior of such devices, where the devices themselves have relatively hard outer shells, typically cylindrically shaped metal cans.
- Fig. 1 in simplified form shows one example of a device 20 (e.g., a canned monolithic emission control component) for use in a system such as described above, in the form of a cylindrically shaped catalytic unit such as shown in Olivier et al. U.S. Serial No. 12/696,347, the disclosure of which was heretofore incorporated by reference.
- the device 20 may have a catalytic core, a mount mat, a cylindrical inner housing or can, a heat insulating blanket or batt, and a cylindrical outer housing 30.
- the outer housing 30 (or shell or jacket) is typically relatively stiff and cylindrical in shape, such as a metallic can.
- the core may typically be a ceramic substrate having a monolithic structure with a catalyst coated thereon and will typically have an oval or circular cross section.
- the details of the interior of the device 20 may be of any configuration suitable for systems as described above where external insulation of the device 20 is desired.
- an external blanket 40 is wrapped around the outer housing 30 so as to substantially encapsulate the housing 30.
- the present invention could be advantageously used with any blanket adapted to provide suitable insulation according to the needs of the device 20 and system in which it operates.
- the blanket 40 could suitably be formed of silica, e-glass, calcined silica, polycrystalline, etc.
- a suitable external blanket 40 with which the invention may be advantageously used is made of a silica fiber insulation material having a weight percentage of Si0 2 of greater than 65%, and in preferred embodiments greater than 95%, and in highly preferred embodiments greater than 98%. Such material is known and commercially available, with one suitable example being supplied by BGF Industries, Inc.
- the blanket 40 may have an average installed density of 0.18 grams/cubic centimeter to 0.30 grams/cubic centimeter of the silica fiber insulation material of the blanket 40.
- the blanket 28 may also be heat treated to achieve calcination of the silica fiber insulation material.
- the external blanket 40 is suitably wrapped around the device 20 as indicated by the arrows in Fig. 2, and then suitably secured in place.
- a suitable covering 44 such as a sheet of stainless steel foil, is similarly wrapped around the external blanket 40 as indicated by the arrows in Fig. 3, with the covering 44 also suitably secured in place, for example, by welding the ends and seam as generally indicated by the welding tools 48 shown in Fig. 4.
- a wire sleeve 50 is then positioned over the foil covering 44.
- the sleeve 50 consists of suitable wires which are knitted or woven together suitably to form a tubular sock-type structure open on both ends.
- the sleeve 50 has an unbiased inner diameter TSLEEVE ID which preferably is slightly greater than the outer diameter D F OIL OD of the foil covering 44 secured over the external blanket 40, enabling the wire sleeve 50 to be slid relatively easily over the foil covering 44 as illustrated by the arrow in Fig. 5.
- the wires forming the sleeve 50 are suitably interconnected (e.g., by weaving or knitting) so that the sleeve 50 formed by the wires will be biased toward a smaller sleeve diameter when the sleeve 50 is extended (stretched) in an axial direction (e.g., the direction of the arrow in Fig. 5).
- the wire sleeve 50 will provide mechanical protection for the foil covering 44 and, in cooperation with the external blanket 40 and foil covering 44, will provide a permanent external insulation for the device 20. Further, the wire sleeve 50 will apply a tension around the foil covering 44, to help secure the foil covering 44 in the desired configuration and will also apply a small, substantially uniform compression through the foil covering 44 to the underlying external blanket 40 to ensure that the external blanket 40 remains suitably configured during use, notwithstanding the extensive vibration, movement and other forces to which it will be subjected.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137027523A KR20140035894A (en) | 2011-07-11 | 2011-12-16 | Method of insulating an exhaust device |
JP2014520176A JP2014526011A (en) | 2011-07-11 | 2011-12-16 | Insulation method for exhaust system |
BR112013028565A BR112013028565A2 (en) | 2011-07-11 | 2011-12-16 | method of isolating an exhaust device |
EP20110869500 EP2731750A4 (en) | 2011-07-11 | 2011-12-16 | Method of insulating an exhaust device |
CN201180072232.2A CN103842125B (en) | 2011-07-11 | 2011-12-16 | Make the method that exhaust apparatus insulate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/179,982 US8100315B1 (en) | 2011-07-11 | 2011-07-11 | Method of insulating an exhaust device |
US13/179,982 | 2011-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013009344A1 true WO2013009344A1 (en) | 2013-01-17 |
Family
ID=45476747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/065507 WO2013009344A1 (en) | 2011-07-11 | 2011-12-16 | Method of insulating an exhaust device |
Country Status (7)
Country | Link |
---|---|
US (1) | US8100315B1 (en) |
EP (1) | EP2731750A4 (en) |
JP (1) | JP2014526011A (en) |
KR (1) | KR20140035894A (en) |
CN (1) | CN103842125B (en) |
BR (1) | BR112013028565A2 (en) |
WO (1) | WO2013009344A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9790836B2 (en) | 2012-11-20 | 2017-10-17 | Tenneco Automotive Operating Company, Inc. | Loose-fill insulation exhaust gas treatment device and methods of manufacturing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140290848A1 (en) * | 2013-03-29 | 2014-10-02 | Dan Sherrill | Method for protecting a muffler with polyester resin/fiberglass laminate |
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2011
- 2011-07-11 US US13/179,982 patent/US8100315B1/en not_active Expired - Fee Related
- 2011-12-16 BR BR112013028565A patent/BR112013028565A2/en not_active IP Right Cessation
- 2011-12-16 JP JP2014520176A patent/JP2014526011A/en active Pending
- 2011-12-16 EP EP20110869500 patent/EP2731750A4/en not_active Withdrawn
- 2011-12-16 CN CN201180072232.2A patent/CN103842125B/en not_active Expired - Fee Related
- 2011-12-16 KR KR1020137027523A patent/KR20140035894A/en not_active Application Discontinuation
- 2011-12-16 WO PCT/US2011/065507 patent/WO2013009344A1/en active Application Filing
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Also Published As
Publication number | Publication date |
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CN103842125B (en) | 2016-06-08 |
BR112013028565A2 (en) | 2017-01-17 |
EP2731750A4 (en) | 2015-05-20 |
US8100315B1 (en) | 2012-01-24 |
CN103842125A (en) | 2014-06-04 |
KR20140035894A (en) | 2014-03-24 |
EP2731750A1 (en) | 2014-05-21 |
JP2014526011A (en) | 2014-10-02 |
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