WO2022097318A1 - 筒状缶体及び誘導加熱触媒装置 - Google Patents
筒状缶体及び誘導加熱触媒装置 Download PDFInfo
- Publication number
- WO2022097318A1 WO2022097318A1 PCT/JP2021/019857 JP2021019857W WO2022097318A1 WO 2022097318 A1 WO2022097318 A1 WO 2022097318A1 JP 2021019857 W JP2021019857 W JP 2021019857W WO 2022097318 A1 WO2022097318 A1 WO 2022097318A1
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- WIPO (PCT)
- Prior art keywords
- tubular
- coil
- honeycomb structure
- cross
- axial direction
- Prior art date
Links
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- 230000006698 induction Effects 0.000 title claims description 40
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- 238000005192 partition Methods 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- 230000001939 inductive effect Effects 0.000 claims description 11
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- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 6
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- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
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- 239000006247 magnetic powder Substances 0.000 description 7
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
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- 238000005219 brazing Methods 0.000 description 1
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- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
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- 230000001788 irregular Effects 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
-
- 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
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
-
- 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
- F01N2240/00—Combination 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
- F01N2240/05—Combination 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 magnetic, e.g. electromagnetic, device other than a valve
-
- 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
- F01N2240/00—Combination 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
- F01N2240/16—Combination 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 an electric heater, i.e. a resistance heater
-
- 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
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2330/30—Honeycomb supports characterised by their structural details
-
- 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
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/34—Honeycomb supports characterised by their structural details with flow channels of polygonal cross section
Definitions
- the present invention relates to a tubular can body and an induction heating catalyst device.
- Automobile exhaust gas may contain harmful components such as carbon monoxide, hydrocarbons and nitrogen oxides and fine particles such as carbon as a result of incomplete combustion. These harmful components are discharged immediately after the engine is started, when the catalyst temperature is low and the catalytic activity is insufficient. Therefore, harmful components in the exhaust gas may be discharged without being purified by the catalyst before reaching the catalyst activation temperature. In order to meet such demands, it is necessary to reduce the emissions that are not purified by the catalyst before reaching the catalyst activation temperature as much as possible. For example, measures using electric heating technology are known. ing.
- Patent Document 1 discloses an invention relating to a catalyst converter in which a catalyst carrier having a metal wire inserted inside a metal tube is provided and a coil is further arranged around the catalyst carrier.
- the catalyst is activated and the exhaust gas is purified by inducing and heating the catalyst carrier by passing a current through the coil.
- the coil is arranged inside the metal tube together with the catalyst carrier.
- the structure of the electric wiring connected to the coil in order to allow the current from the external power source to flow may be complicated.
- the insulation around the coil became insufficient due to the condensed water from the exhaust gas, and it was necessary to improve it.
- the present invention was created in view of the above circumstances, and is a tubular can that has a simple structure for connecting the honeycomb structure to the coil for induction heating and can improve the insulation around the coil.
- An object of the present invention is to provide a body and an induction heating catalyst device.
- a tubular can body capable of accommodating a honeycomb structure inside.
- a coil for inducing heating the honeycomb structure and A tubular member made of insulating material and It has a tubular metal member capable of accommodating the coil and the tubular member inside, and has the same.
- the coil is provided radially outside the inner peripheral surface of the tubular member, and at least a part thereof is embedded in the cross section of the tubular member, or (Ii) The coil is provided on the outer peripheral portion of the tubular member. Cylindrical can body.
- a tubular can body that can accommodate a honeycomb structure inside.
- the tubular can body has a coil for inducing and heating the honeycomb structure.
- the tubular can body is made of an insulating material.
- the coil is provided radially outside the inner peripheral surface of the tubular can body, and at least a part thereof is embedded in the cross section of the tubular can body, or (Ii) The coil is provided on the outer peripheral portion of the tubular can body. Cylindrical can body.
- An induction heating catalyst having the tubular can body according to (1) or (2) and a honeycomb structure having a magnetic material housed inside the tubular can body via a shock absorber. Device.
- the present invention it is possible to provide a tubular can body and an induction heating catalyst device in which the electrical wiring for connecting the honeycomb structure to the coil for induction heating has a simple structure and the insulation around the coil is improved. ..
- FIG. 3 is a schematic cross-sectional view of the tubular can body according to the third embodiment of the present invention, which is parallel to the axial direction.
- FIG. 3A is an enlarged schematic view of a tubular can body shown in FIG. 3A.
- FIG. 1A is a schematic cross-sectional view of the tubular member 15 of the tubular can body 12 according to the first embodiment of the present invention, which is parallel to the axial direction.
- FIG. 1B is a schematic cross-sectional view of the cross section of L1-L1 in FIG. 1A.
- the tubular can body 12 is a tubular metal member capable of accommodating a coil 14 for inducing and heating a honeycomb structure, a tubular member 15 made of an insulating material, and the coil 14 and the tubular member 15. It has 16.
- the tubular can body 12 is configured to accommodate the honeycomb structure inside, and may or may not include the honeycomb structure as a component thereof.
- the coil 14 for inducing and heating the honeycomb structure is arranged so as to orbit along the peripheral surface of the tubular member 15, and is arranged so as to orbit the outside of the honeycomb structure.
- the coil 14 can be formed by using a material known as an IH coil. Specific examples include copper.
- the cross section of the coil 14 is not particularly limited, and may be a substantially square, a substantially rectangular shape, an elliptical shape, a circular shape, or the like. Further, a so-called litz wire obtained by bundling copper wires having an insulating coating with a polyamide-imide coating or the like may be used.
- An electrical connection terminal 17 for connecting electrical wiring is connected to the coil 14.
- the electrical wiring is connected to an external power source.
- a current flows through the electrical wiring to the coil 14, and induction heating is performed.
- the electrical connection terminal 17 is connected to the coil 14 by being inserted from the outside of the tubular metal member 16 in the radial direction of the tubular can body 12 through a through hole.
- the electrical connection terminal 17 is covered with an insulating material 18.
- the coil 14 is provided radially outside the inner peripheral surface of the tubular member 15 in a cross section parallel to the axial direction of the tubular member 15 made of an insulating material. Further, the coil 14 is embedded in the cross section of the tubular member 15 made of an insulating material. Note that FIG. 1 shows a configuration in which the coil 14 is embedded in the cross section of the tubular member 15 made of an insulating material as described above. In the present invention, the coil 14 is not limited to this, and as long as the coil 14 is provided radially outside the inner peripheral surface of the tubular member 15 in a cross section parallel to the axial direction of the tubular member 15, the tubular member 15 is not limited to this. It can have a configuration in which at least a part is embedded in the cross section.
- the electric wiring connected to the coil 14 for inducing and heating the honeycomb structure can be made a simple structure. Further, when the coil is arranged inside the metal pipe as in the conventional case, it is difficult to control the surface pressure of the canning mat (buffer member) on the honeycomb structure, and the force for holding the honeycomb structure during use is maintained. There is a problem that it cannot be done.
- the canning mat surface pressure can be easily controlled, and the holding force of the honeycomb structure can be easily maintained during use. Can be maintained.
- the coil 14 since the coil 14 is not exposed on the inner surface of the tubular member 15, it is possible to prevent the coil 14 from getting wet with condensed water from the exhaust gas during use, and to insulate the coil 14 around the coil 14. Good sex can be maintained.
- the surface of the coil 14 may be covered with a cushioning layer. According to such a configuration, by protecting the coil 14, deterioration such as oxidation of the coil 14 can be suppressed.
- the insulating material constituting the tubular member 15 is mainly composed of any one of silicon nitride, sialon, silicon carbide, cordierite, alumina, zirconia, silica and mullite, or a composite material thereof as a main component. can do. Further, as the insulating material, it is preferable to use an alumina fiber reinforced material or a mullite fiber reinforced material in terms of reliability against thermal stress fracture.
- the main component means that the content is more than 50% by mass with respect to the composition of the tubular member 15, preferably 80% by mass or more, and more preferably 90% by mass or more.
- the thickness of the tubular member 15 is not particularly limited as long as it can embed the coil 14, and can be formed to, for example, 5 to 40 mm and 10 to 30 mm.
- the tubular metal member 16 is formed so that the coil 14 and the tubular member 15 can be accommodated inside.
- a known metal material can be used.
- stainless steel, titanium alloy, copper alloy, aluminum alloy, brass and the like can be mentioned. Among them, stainless steel is preferable because of its high durability and reliability and low cost.
- the thickness of the tubular metal member 16 is not particularly limited, but is preferably 0.5 mm or more, more preferably 1 mm or more. Durability can be ensured by setting the thickness of the tubular metal member 16 to 0.5 mm or more.
- the thickness of the tubular metal member 16 is preferably 5 mm or less, more preferably 3 mm or less. By reducing the thickness of the tubular metal member 16 to 5 mm or less, the weight can be reduced.
- the tubular can body 12 is provided with an electromagnetic shielding layer 21 between the coil 14 and the tubular metal member 16 in a cross section parallel to the axial direction.
- the electromagnetic shielding layer 21 is provided so as to cover the outside of the tubular member 15 in which the coil 14 is embedded.
- the constituent material of the electromagnetic shielding layer 21 is not particularly limited, and known materials such as ferrite, silicon iron, permendur, and electromagnetic stainless steel can be used. It is not necessary to provide the electromagnetic shielding layer 21 on the tubular can body 12.
- the thickness of the electromagnetic shielding layer 21 is preferably 0.3 to 10 mm, more preferably 1 to 5 mm.
- a cushioning member 13 is provided between the electromagnetic shielding layer 21 that covers the tubular member 15 and the tubular metal member 16. Further, the tubular can body 12 is provided with a cushioning member 13 so as to be arranged between the honeycomb structure and the tubular member 15 when the honeycomb structure is housed inside.
- the cushioning member 13 a known material can be used, and for example, it can be made of ceramic fiber, glass fiber, or the like.
- the method for manufacturing the tubular can body 12 according to the first embodiment of the present invention and the induction heating catalyst device 10 provided with the tubular can body 12 will be described below.
- the method for manufacturing the tubular can body 12 and the induction heating catalyst device 10 provided with the tubular can body according to the first embodiment of the present invention includes a step of preparing a honeycomb structure provided with a magnetic material described later, and a tubular member in which a coil is embedded. A step of accommodating the honeycomb structure in the tubular member via the cushioning member 13 is provided.
- a coil made of copper or the like is prepared and provided so as to orbit the outer circumference of the honeycomb structure.
- the coil is placed in a mold, and an insulating material (raw material for a tubular member) slurry is poured into the mold and fired.
- the electromagnetic shielding layer is formed by providing a thin-walled part using ferrite or the like at a predetermined position on the outer periphery of the tubular member.
- a coil may be placed in the powder raw material, pressurized with hydrostatic pressure, and then fired to produce a tubular member. Hot press firing may be used as the firing method.
- the tubular member containing the honeycomb structure inside and the tubular metal member are connected.
- it may be press-fitted through a cushioning material between them, or it may be arranged so as to be fitted by a method such as shrink fitting, brazing, or diffusion joining.
- an electrical connection terminal covered with an insulating material is inserted in the radial direction of the tubular can body through a through hole formed in advance and connected to the coil. ..
- the tubular can body 12 according to the first embodiment of the present invention and the induction heating catalyst device 10 provided with the tubular can body 12 can be obtained.
- FIG. 2A is a schematic cross-sectional view of the tubular member 25 of the tubular can body 22 according to the second embodiment of the present invention, which is parallel to the axial direction.
- FIG. 2B is a schematic cross-sectional view of the cross section of L2-L2 in FIG. 2A.
- the coil 14 is not embedded in the cross section of the tubular member 25, but is provided on the outer peripheral portion of the tubular member 25. It is different from the tubular can body 12 according to the above. Further, a cushioning member 23 is provided between the outside of the coil 14 and the electromagnetic shielding layer 21. Other than that, it has the same configuration as the tubular can body 12 according to the first embodiment, and all the constituent materials, arrangements, and the like described in the first embodiment can be provided in the same manner.
- the coil 14 of the tubular can body 22 is provided on the outer peripheral portion of the tubular member 25.
- the coil 14 is provided on the outer peripheral portion of the tubular member 25, that is, the coil 14 is in contact with (1) the outer peripheral portion of the tubular member 25 and is on the outer side of the tubular member 25. It has a portion that is provided or (2) is partially embedded in the tubular member 25 near the outer periphery of the tubular member 25, and the other portion is provided on the outside of the tubular member 25. Indicates that you are.
- FIG. 2 shows the state in which a part of the coil 14 is embedded in the tubular member 25 in the above (2).
- the electric wiring connected to the coil 14 for inducing and heating the honeycomb structure can be made a simple structure.
- the canning mat surface pressure can be easily managed, and the holding force of the honeycomb structure can be easily maintained at the time of use. Further, it is possible to prevent the coil 14 from getting wet with condensed water from the exhaust gas during use, and to maintain good insulation around the coil 14.
- the method for manufacturing the tubular can body 22 according to the second embodiment of the present invention and the induction heating catalyst device provided with the tubular can body 22 will be described below.
- the method for manufacturing the tubular can body 22 and the induction heating catalyst device provided with the tubular can body 22 according to the second embodiment of the present invention includes a step of preparing a honeycomb structure provided with a magnetic material described later, and a coil provided on the outer peripheral portion. It includes a step of manufacturing a tubular member and a step of accommodating the honeycomb structure in the tubular member via a cushioning member.
- a coil made of copper or the like is prepared and provided so as to orbit the outer periphery of the honeycomb structure.
- the coil is placed in a mold, and an insulating material (raw material for a tubular member) slurry is poured into the mold and fired.
- a coil is placed in a metal mold, filled with raw material powder for a tubular member, pressed to obtain a molded body, and then sealed in a rubber bag or the like and hydrostatic pressure is applied to form a dense molded body. obtain. Then, this molded product is fired.
- a cushioning member (ceramic fiber or glass fiber) is wound around the outside of the coil of the tubular member provided on the outer periphery of the coil, and a thin-walled member made of a material such as ferrite is mechanically fixed on the outside. Then, an electromagnetic shielding layer is formed.
- the step of accommodating the honeycomb structure in the tubular member via the cushioning member can be carried out in the same manner as the step of accommodating the honeycomb structure in the tubular member via the cushioning member of the first embodiment described above. .. After that, as in the first embodiment described above, the tubular member containing the honeycomb structure inside and the tubular metal member are connected to each other. As described above, the tubular can body 22 according to the second embodiment of the present invention and the induction heating catalyst device provided with the tubular can body 22 can be obtained.
- FIG. 3A is a schematic cross-sectional view of the tubular can body 32 according to the third embodiment of the present invention, which is parallel to the axial direction.
- FIG. 3B is an enlarged schematic view of the tubular can body 32 shown in FIG. 3A.
- 3A and 3B show a tubular can body 32 in which a metal exhaust pipe 31 serving as a flow path for the exhaust gas of the engine is connected to the gas inflow side and the gas outflow side.
- the metal exhaust pipe 31 is fixed at both ends of the tubular can body 32 by fixing members 36 via gaskets 34, respectively.
- examples of the fixing method between the metal exhaust pipe 31 and the tubular can body 32 include joining with an adhesive, joining with a mechanical assembling member, press-fitting, and shrink fitting.
- the tubular can body 32 includes a coil 14 for inducing and heating the honeycomb structure, and is made of an insulating material.
- a coil 14 is provided on the outer peripheral portion of the tubular can body 32 in a cross section parallel to the axial direction of the tubular can body 32.
- the embodiment in which the coil 14 is provided on the outer peripheral portion of the tubular can body 32 is as shown in the second embodiment, whereby the coil 14 is provided on the inner surface of the tubular can body 32 as in the second embodiment. Since it is not exposed, the electrical wiring connected to the coil 14 for induction heating the honeycomb structure has a simple structure, and has the effect of improving the insulation around the coil.
- the surface of the coil 14 of the tubular can body 32 may be held by a cushioning material. According to such a configuration, by protecting the coil 14, deterioration such as oxidation of the coil 14 can be suppressed.
- the tubular can body 32 includes an electromagnetic shielding layer 21 located outside the coil 14 in a cross section parallel to the axial direction. According to such a configuration, the electromagnetic wave generated by the coil 14 at the time of induction heating can be blocked by the electromagnetic shielding layer 21.
- the method for manufacturing the tubular can body 32 according to the third embodiment of the present invention and the induction heating catalyst device provided with the tubular can body 32 will be described below.
- the method for manufacturing a tubular can body 32 and an induction heating catalyst device provided with the tubular can body 32 according to the third embodiment of the present invention is a step of preparing a honeycomb structure provided with a magnetic material, and a tubular shape having a coil provided on an outer peripheral portion. It includes a process of manufacturing a can body and a process of accommodating a honeycomb structure in a tubular can body via a cushioning member.
- a coil made of copper or the like is prepared and provided so as to orbit the outer periphery of the honeycomb structure.
- the coil is placed in a mold, and an insulating material (raw material for a tubular can body) slurry is poured into the mold and fired.
- a coil is placed in a metal mold, filled with raw material powder for a tubular member, pressed to obtain a molded body, and then sealed in a rubber bag or the like and hydrostatic pressure is applied to form a dense molded body. obtain. Then, this molded product is fired.
- a tubular can body in which a coil is provided on the outer peripheral portion can be obtained.
- a cushioning member ceramic fiber or glass fiber
- a thin-walled member made of a material such as ferrite is mechanically fixed on the outside.
- an electromagnetic shielding layer is formed.
- the step of accommodating the honeycomb structure in the tubular can via the cushioning member can be carried out in the same manner as the step of accommodating the honeycomb structure in the tubular member via the cushioning member of the first embodiment described above. ..
- the tubular can body 32 according to the third embodiment of the present invention and the induction heating catalyst device provided with the tubular can body 32 can be obtained.
- FIG. 4 is a schematic cross-sectional view of the tubular can body 42 according to the fourth embodiment of the present invention, which is parallel to the axial direction.
- the tubular can body 42 according to the fourth embodiment of the present invention is the tubular can body 32 according to the third embodiment, in which the cushioning member 33 is not provided on the surface of the coil 14, and the electromagnetic shielding layer 21.
- the configuration is the same except that is not provided.
- the tubular can body 42 has a coil 14 provided on the outer peripheral portion of the tubular can body 32 in a cross section parallel to the axial direction. That is, since the coil 14 is not exposed on the inner surface of the tubular can body 42 as in the second embodiment, the electric wiring for connecting the honeycomb structure to the coil 14 for induction heating is made a simple structure, and the coil circumference is set. It has the effect of improving the insulation of the honeycomb.
- the method for manufacturing a tubular can body 42 according to the fourth embodiment of the present invention and an induction heating catalyst device including the tubular can body 42 according to the fourth embodiment is a manufacturing method for the tubular can body 32 according to the third embodiment and the induction heating catalyst device provided with the tubular can body 32.
- the cushioning member and the electromagnetic shielding layer provided on the coil surface can be carried out by the same procedure except that the cushioning member and the electromagnetic shielding layer are not provided in the fourth embodiment.
- FIG. 5 is a schematic cross-sectional view of the tubular can body 52 according to the fifth embodiment of the present invention, which is parallel to the axial direction.
- the tubular can body 52 is made of an insulating material and has a coil 14 for inducing and heating the honeycomb structure.
- the coil 14 is provided radially outside the inner peripheral surface of the tubular can body 52 in a cross section parallel to the axial direction of the tubular can body 52 made of an insulating material. Further, the coil 14 is embedded in the cross section of the tubular can body 52 made of an insulating material. Note that FIG. 5 shows a configuration in which the coil 14 is embedded in the cross section of the tubular can body 52 made of an insulating material. In the present invention, the coil 14 is not limited to this, and the coil 14 is provided radially outside the inner peripheral surface of the tubular can body 52 in a cross section parallel to the axial direction of the tubular can body 52 made of an insulating material.
- the electrical wiring for connecting the honeycomb structure to the coil 14 for induction heating is simplified. It has the effect of improving the insulation around the coil.
- the surface of the coil 14 of the tubular can body 52 may be covered with the cushioning layer 58.
- the cushioning layer 58 is not particularly limited, but can be formed of, for example, the same material as the cushioning member 33.
- the tubular can body 52 includes an electromagnetic shielding layer 21 located outside the coil 14 in a cross section parallel to the axial direction. Specifically, the electromagnetic shielding layer 21 is provided on the outer surface of the tubular can body 52. According to such a configuration, the electromagnetic wave generated by the coil 14 at the time of induction heating can be blocked by the electromagnetic shielding layer 21.
- the method for manufacturing the tubular can body 52 according to the fifth embodiment of the present invention and the induction heating catalyst device provided with the tubular can body 52 will be described below.
- the method for manufacturing a tubular can body 52 and an induction heating catalyst device provided with the tubular can body 52 according to the fifth embodiment of the present invention includes a step of preparing a honeycomb structure provided with a magnetic material and a manufacturing method of a tubular can body having a coil embedded therein. It includes a step and a step of accommodating the honeycomb structure in the tubular can body via a cushioning member.
- a coil made of copper or the like is prepared and provided so as to circulate around the outer circumference of the honeycomb structure.
- the coil is placed in a mold, and an insulating material (raw material for a tubular member) slurry is poured into the mold and fired.
- a cylindrical member in which the coil is embedded can be obtained.
- a thin-walled component such as ferrite is provided at a predetermined position on the outer periphery of the tubular member to form an electromagnetic shielding layer.
- a coil may be placed in the powder raw material, pressurized with hydrostatic pressure, and then fired to produce a tubular can body. Hot press firing may be used as the firing method.
- the step of accommodating the honeycomb structure in the tubular can via the cushioning member can be carried out in the same manner as the step of accommodating the honeycomb structure in the tubular member via the cushioning member of the first embodiment described above. ..
- the tubular can body 52 according to the fifth embodiment of the present invention and the induction heating catalyst device provided with the tubular can body 52 can be obtained.
- FIG. 6 is a schematic cross-sectional view of the tubular can body 62 according to the sixth embodiment of the present invention, which is parallel to the axial direction.
- the tubular can body 62 according to the sixth embodiment has the same configuration as the tubular can body 52 shown in the fifth embodiment except that the cross-sectional shape of the coil 64 is not an ellipse but a substantially rectangular shape. are doing. According to such a configuration, since the coil 64 is not exposed on the inner surface of the tubular can body 62 as in the first embodiment, the electrical wiring for connecting the honeycomb structure to the coil 64 for induction heating is simplified. It has the effect of improving the insulation around the coil.
- FIG. 7 is a schematic cross-sectional view of the tubular can body 72 according to the seventh embodiment of the present invention, which is parallel to the axial direction.
- the tubular can body 72 according to the seventh embodiment has the same configuration as the tubular can body 42 shown in the fourth embodiment except that the cross-sectional shape of the coil 74 is not an ellipse but a substantially rectangular shape. are doing. According to such a configuration, since the coil 74 is not exposed on the inner surface of the tubular can body 72 as in the first embodiment, the electrical wiring for connecting the honeycomb structure to the coil 74 for induction heating is simplified. It has the effect of improving the insulation around the coil.
- FIG. 8 shows a schematic cross-sectional view of the tubular member 15 of the induction heating catalyst device 10 according to the first embodiment of the present invention, which is parallel to the axial direction.
- the induction heating catalyst device 10 includes a tubular can body 12 and a honeycomb structure 11 housed inside the tubular can body 12 via a cushioning member 13.
- the honeycomb structure 11 has an outer peripheral wall and a partition wall that is disposed inside the outer peripheral wall and forms a plurality of cells that penetrate from one end face to the other end face to form a flow path.
- the material of the partition wall and the outer peripheral wall of the honeycomb structure 11 is not particularly limited, but is usually formed of a ceramic material.
- a ceramic material for example, cordierite, silicon carbide, aluminum titanate, silicon nitride, mullite, alumina, silicon-silicon carbide composite material, silicon carbide-cordierite composite material, especially silicon-silicon carbide composite material or silicon carbide.
- Examples thereof include a sintered body as a main component.
- the honeycomb structure 11 is formed of at least one ceramic material selected from the group consisting of cordierite, silicon carbide, aluminum titanate, silicon nitride, mullite, and alumina.
- the cell shape of the honeycomb structure 11 is not particularly limited, but the cross section orthogonal to the central axis of the honeycomb structure 11 should be a polygon such as a triangle, a quadrangle, a pentagon, a hexagon, an octagon, a circle, or an ellipse. Is preferable, and other irregular shapes may be used. It is preferably a polygon.
- the thickness of the partition wall of the honeycomb structure 11 is preferably 0.05 to 0.50 mm, and more preferably 0.10 to 0.45 mm in terms of ease of manufacture. For example, when it is 0.05 mm or more, the strength of the honeycomb structure 11 is further improved, and when it is 0.50 mm or less, the pressure loss can be reduced.
- the thickness of this partition wall is an average value measured by a method of observing a cross section in the central axial direction with a microscope.
- the porosity of the partition wall is preferably 20 to 70%.
- the porosity of the partition wall is preferably 20% or more, preferably 70% or less, in terms of ease of manufacture, and the strength of the honeycomb structure 11 can be maintained.
- the average pore diameter of the partition wall is preferably 2 to 30 ⁇ m, more preferably 5 to 25 ⁇ m.
- the average pore diameter of the partition wall is 2 ⁇ m or more, the production becomes easy, and when it is 30 ⁇ m or less, the strength of the honeycomb structure 11 can be maintained.
- the terms "average pore diameter” and “porosity” mean the average pore diameter and porosity measured by the mercury intrusion method.
- the cell density of the honeycomb structure 11 is not particularly limited, but is preferably in the range of 5 to 150 cells / cm 2 , more preferably in the range of 5 to 100 cells / cm 2 , and 31 to 80 cells. More preferably, it is in the range of / cm 2 .
- the outer shape of the honeycomb structure 11 is a columnar shape having a circular end face (cylindrical shape), a columnar shape having an oval end face, and a columnar shape having a polygonal end face (quadrangle, pentagon, hexagon, heptagon, octagon, etc.). can do.
- Such a honeycomb structure 11 is formed by forming a honeycomb structure containing a ceramic raw material into a honeycomb shape having a partition wall that penetrates from one end face to the other end face and forms a plurality of cells which are flow paths of fluid. , A honeycomb molded body is formed, and the honeycomb molded body is produced by baking after drying.
- the outer peripheral wall may be extruded integrally with the honeycomb structure and used as it is as the outer peripheral wall, or molded or fired. Later, the outer periphery of the honeycomb structure may be ground into a predetermined shape, and a coating material may be applied to the honeycomb structure obtained by grinding the outer periphery to form an outer peripheral coating.
- the honeycomb structure 11 is not limited to an integrated honeycomb structure in which a partition wall is integrally formed.
- a honeycomb structure 11 has a partition wall made of ceramics, and a plurality of cells serving as a flow path for fluid by the partition wall are formed.
- the columnar honeycomb segments formed in the sections may be a honeycomb structure (bonded honeycomb structure) having a structure in which a plurality of columnar honeycomb segments are combined via a bonding material layer.
- the catalyst carrier By supporting the catalyst on the surface of the partition wall of the honeycomb structure 11, the catalyst carrier may be used.
- the catalyst consists of an oxidation catalyst, a three-way catalyst, a NO x storage reduction catalyst, a NO x selective reduction catalyst (SCR catalyst), a hydrocarbon adsorption catalyst, a hydrocarbon, a carbon monoxide oxidation catalyst, and an ammonia slip (oxidation) catalyst. At least one selected from the group can be used.
- the catalyst can be appropriately selected according to the desired purpose of exhaust gas purification.
- the method for supporting the catalyst is not particularly limited, and can be conventionally carried out according to the method for supporting the catalyst on the honeycomb structure.
- a magnetic body 19 may be provided in the honeycomb structure 11.
- the magnetic body 19 may be filled in the cell of the honeycomb structure 11.
- the magnetic material 19 for example, a plate-shaped material, a rod-shaped material, a ring-shaped material, a wire-shaped material, or a fibrous material can be used.
- the rod-shaped magnetic material and the wire-shaped magnetic material are defined as a rod-shaped material having a cross-sectional diameter of 0.8 mm or more perpendicular to the length direction and a wire-shaped material having a cross-sectional diameter of less than 0.8 mm. Separated.
- the magnetic material 19 having these shapes can be appropriately used according to the shape of the cell.
- a plurality of magnetic materials 19 may be assembled and filled in one cell, or only one magnetic material 19 may be filled.
- the magnetic body 19 may be included in the surface layer provided on the partition wall of the honeycomb structure 11.
- the surface layer contains a fixing material in which the powder of the magnetic material 19 is dispersed.
- the fixing material glass containing silicic acid, boric acid, or borosilicate, crystallized glass, ceramics, or glass containing other oxides, crystallized glass, ceramics, or the like can be used.
- Examples of the types of the magnetic material 19 include the balance Co-20 mass% Fe, the balance Co-25 mass% Ni-4 mass% Fe, the balance Fe-15 to 35 mass% Co, and the balance Fe-17 mass% Co-2.
- Mass% Cr-1 mass% Mo balance Fe-49 mass% Co-2 mass% V, balance Fe-18 mass% Co-10 mass% Cr-2 mass% Mo-1 mass% Al, balance Fe-27 mass % Co-1 mass% Nb, balance Fe-20 mass% Co-1 mass% Cr-2 mass% V, balance Fe-35 mass% Co-1 mass% Cr, pure cobalt, pure iron, electromagnetic soft iron, balance Fe -0.1 to 0.5% by mass Mn, balance Fe-3% by mass Si, balance Fe-6.5% by mass Si, balance Fe-18% by mass Cr, balance Fe-16% by mass Cr-8% by mass Al , Remaining Ni-13 mass% Fe-5.3 mass% Mo, Remaining Fe-45 mass% Ni, Remaining Fe-10 mass% Si-5 Mass% Al, Remaining Fe-36 mass% Ni, Remaining Fe-45 mass % Ni, balance
- honeycomb fired body having a ceramic partition wall and having a plurality of cells partitioned by the partition wall is produced, and the magnetic material is applied to the honeycomb fired body.
- the honeycomb fired body made of ceramics can be produced by a known method.
- a magnetic material is provided on the honeycomb fired body.
- the magnetic material is a magnetic powder contained in the surface layer and the surface layer is provided on the partition wall of the cell
- the magnetic powder and the fixing material composed of glass or the like are mixed.
- a slurry for forming a surface layer is prepared from the material. Specifically, for example, a magnetic powder and a glass powder are blended, and a binder, a dispersant, and water are blended therein to prepare a slurry for forming a surface layer.
- the blending ratio of the magnetic powder and the glass powder is 1: 1 or more and 20: 1 or less on a volume basis.
- the end face of the honeycomb fired body is masked, and the end face is immersed in a storage container in which the surface layer forming slurry is stored to surface the unmasked cell. Apply the layer-forming slurry.
- the surface layer forming slurry is applied to the inside of the cell in a region having a predetermined length from one end face of the honeycomb fired body.
- the water content of the surface layer forming slurry is removed, and the surface layer is formed on the partition wall of the cell.
- the drying conditions the same conditions as the conditions for drying the honeycomb molded product can be adopted.
- the heat treatment is performed to bond the magnetic materials to each other and to fix the magnetic material to the partition wall of the honeycomb fired body by the glass phase.
- the heat treatment temperature can be 800 ° C. to 1300 ° C. for 0.5 hours to 2 hours.
- a method of filling the slurry into the cell it is a simple method to push the paste-like material with a spatula such as a squeegee. It is easy to control the depth by the number of times the squeegee is pushed.
- a method may be adopted in which a slurry having good fluidity is prepared and the slurry is coated on the partition surface of the honeycomb fired body by a suction method to form a surface layer.
- the magnetic material is a magnetic powder and is filled in the cell while being contained in the binder or the adhesive material
- the magnetic powder and the binder containing metal or glass as a main component are mixed.
- the containing slurry is poured into a cell of a fired honeycomb body, and heated and hardened at a temperature equal to or higher than the melting point of the metal or the softening point of the glass.
- a slurry containing the magnetic powder and an adhesive material containing silica or alumina as a main component is poured into the cell of the fired honeycomb body and heated to solidify the silica or alumina.
- a binder containing metal or glass as a main component When a binder containing metal or glass as a main component is used, it is necessary to melt or soften it once at a temperature below the heat resistant temperature of the honeycomb fired body, so it is preferable to heat it at a temperature equal to or higher than the melting point or softening point of the binder. .. Further, in the usage environment, since the maximum temperature reaches about 700 ° C., it is more preferable to use a metal or glass having a melting point or a softening point equal to or higher than this temperature.
- the specific melting point or softening point is, for example, 800 to 1200 ° C.
- the adhesive material when an adhesive material containing silica or alumina as a main component is used, it is preferable that the adhesive material can be solidified by heating and drying during production.
- the adhesive material that can be solidified by heat drying include a colloidal dispersion of silica or alumina, and a colloidal dispersion containing silica and alumina may be used.
- the maximum temperature in the usage environment reaches about 700 ° C., it is more preferable to use silica or alumina having a heat resistant temperature equal to or higher than this temperature.
- a suction jig is attached to the downstream of the honeycomb fired body, and the slurry is sucked from the other end face side downstream of the honeycomb fired body to remove excess water and fill the material containing the magnetic material. ..
- the step of pouring the slurry into the cell may be performed at the stage of the honeycomb molded body and the dried body.
- the honeycomb molded body is dried, and in the firing step of the honeycomb dried body, the step of fixing the magnetic material to the adhesive material is performed at the same time.
- Silica or alumina preferably exhibits the effect of solidifying by drying.
- the magnetic material has a plate shape, a rod shape, a ring shape, a wire shape, or a fibrous shape and is filled in the cell
- the cross-sectional shape of the cell of the honeycomb fired body to be filled with the magnetic material and the cell.
- a predetermined plate-shaped, rod-shaped, wire-shaped, or fibrous magnetic material is prepared.
- the magnetic material is filled in the predetermined cell of the honeycomb fired body by inserting the magnetic material from the end face on the upstream side to a predetermined length.
- the end face on the upstream side of the honeycomb fired body is cut off by a predetermined depth to form a groove portion, and the ring-shaped magnetic material is inserted into the groove portion.
- a raw honeycomb molded body having a groove formed therein is prepared and dried to prepare a dried honeycomb body, and then a ring-shaped magnetic material is inserted into the groove portion.
- the catalyst carrier can be supported in a predetermined cell of the honeycomb fired body to produce the catalyst carrier.
- the method for supporting the catalyst is not particularly limited, and the method can be carried out according to the method for supporting the catalyst, which is performed by the conventional method for producing a catalyst carrier.
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Abstract
Description
(1)ハニカム構造体を内部に収容可能な筒状缶体であって、
前記ハニカム構造体を誘導加熱するためのコイルと、
絶縁材料で構成された筒状部材と、
前記コイル及び前記筒状部材を内部に収容可能な筒状の金属部材と、を有し、
前記筒状部材の軸方向に平行な断面において、
(i)前記コイルが、前記筒状部材の内周面より径方向外側に設けられ、且つ、前記筒状部材の断面内に少なくとも一部が埋め込まれている、または、
(ii)前記コイルが前記筒状部材の外周部に設けられている、
筒状缶体。
(2)ハニカム構造体を内部に収容可能な筒状缶体であって、
前記筒状缶体が、前記ハニカム構造体を誘導加熱するためのコイルを有し、
前記筒状缶体が、絶縁材料で構成されており、
前記筒状缶体の軸方向に平行な断面において、
(i)前記コイルが、前記筒状缶体の内周面より径方向外側に設けられ、且つ、前記筒状缶体の断面内に少なくとも一部が埋め込まれている、または、
(ii)前記コイルが前記筒状缶体の外周部に設けられている、
筒状缶体。
(3)(1)または(2)に記載の筒状缶体と、緩衝部材を介して前記筒状缶体の内部に収容された磁性体を備えるハニカム構造体と、を有する、誘導加熱触媒装置。
図1Aは、本発明の実施形態1に係る筒状缶体12の筒状部材15の軸方向に平行な断面模式図である。図1Bは、図1AにおけるL1-L1断面の断面模式図である。
以上のようにして、本発明の実施形態1に係る筒状缶体12及びそれを備えた誘導加熱触媒装置10が得られる。
図2Aは、本発明の実施形態2に係る筒状缶体22の筒状部材25の軸方向に平行な断面模式図である。図2Bは、図2AにおけるL2-L2断面の断面模式図である。
以上のようにして、本発明の実施形態2に係る筒状缶体22及びそれを備えた誘導加熱触媒装置が得られる。
図3Aは、本発明の実施形態3に係る筒状缶体32の軸方向に平行な断面模式図である。図3Bは、図3Aで示す筒状缶体32の拡大模式図である。図3A、図3Bでは、筒状缶体32が、そのガス流入側とガス流出側とに、エンジンの排気ガスの流路となる金属排気管31が接続されている様子を示している。金属排気管31は、筒状缶体32の両端において、それぞれガスケット34を介して固定部材36によって固定されている。なお、金属排気管31と筒状缶体32との固定方法については、上記の他に、接着剤による接合、メカニカルな組付け部材による結合、圧入、焼き嵌めなどが挙げられる。
以上のようにして、本発明の実施形態3に係る筒状缶体32及びそれを備えた誘導加熱触媒装置が得られる。
図4は、本発明の実施形態4に係る筒状缶体42の軸方向に平行な断面模式図である。本発明の実施形態4に係る筒状缶体42は、上述の実施形態3に係る筒状缶体32において、コイル14の表面に緩衝部材33が設けられていない点、及び、電磁遮蔽層21が設けられていない点以外は、同様の構成である。
図5は、本発明の実施形態5に係る筒状缶体52の軸方向に平行な断面模式図である。筒状缶体52は、絶縁材料で構成され、ハニカム構造体を誘導加熱するためのコイル14を有している。
以上のようにして、本発明の実施形態5に係る筒状缶体52及びそれを備えた誘導加熱触媒装置が得られる。
図6は、本発明の実施形態6に係る筒状缶体62の軸方向に平行な断面模式図である。実施形態6に係る筒状缶体62は、上述の実施形態5で示した筒状缶体52において、コイル64の断面形状が楕円ではなく、略長方形であること以外は、同様の構成を有している。このような構成によれば、実施形態1と同様に、筒状缶体62の内面にコイル64が露出していないため、ハニカム構造体を誘導加熱するためのコイル64に接続させる電気配線を簡易な構造とし、コイル回りの絶縁性を向上させる等の効果を有する。
図7は、本発明の実施形態7に係る筒状缶体72の軸方向に平行な断面模式図である。実施形態7に係る筒状缶体72は、上述の実施形態4で示した筒状缶体42において、コイル74の断面形状が楕円ではなく、略長方形であること以外は、同様の構成を有している。このような構成によれば、実施形態1と同様に、筒状缶体72の内面にコイル74が露出していないため、ハニカム構造体を誘導加熱するためのコイル74に接続させる電気配線を簡易な構造とし、コイル回りの絶縁性を向上させる等の効果を有する。
11 ハニカム構造体
12、22、32、42、52、62、72 筒状缶体
13、23、33 緩衝部材
14、64、74 コイル
15、25 筒状部材
16 金属部材
17 電気接続端子
18 絶縁材
19 磁性体
21 電磁遮蔽層
31 金属排気管
34 ガスケット
36 固定部材
58 緩衝層
Claims (10)
- ハニカム構造体を内部に収容可能な筒状缶体であって、
前記ハニカム構造体を誘導加熱するためのコイルと、
絶縁材料で構成された筒状部材と、
前記コイル及び前記筒状部材を内部に収容可能な筒状の金属部材と、を有し、
前記筒状部材の軸方向に平行な断面において、
(i)前記コイルが、前記筒状部材の内周面より径方向外側に設けられ、且つ、前記筒状部材の断面内に少なくとも一部が埋め込まれている、または、
(ii)前記コイルが前記筒状部材の外周部に設けられている、
筒状缶体。 - 前記筒状缶体の軸方向に平行な断面において、前記コイルと前記筒状の金属部材との間に、電磁遮蔽層をさらに備える、請求項1に記載の筒状缶体。
- ハニカム構造体を内部に収容可能な筒状缶体であって、
前記筒状缶体が、前記ハニカム構造体を誘導加熱するためのコイルを有し、
前記筒状缶体が、絶縁材料で構成されており、
前記筒状缶体の軸方向に平行な断面において、
(i)前記コイルが、前記筒状缶体の内周面より径方向外側に設けられ、且つ、前記筒状缶体の断面内に少なくとも一部が埋め込まれている、または、
(ii)前記コイルが前記筒状缶体の外周部に設けられている、
筒状缶体。 - 前記コイルが、前記筒状缶体の軸方向に平行な断面において、緩衝層を介して、前記筒状缶体の内周面より径方向外側に設けられ、且つ、前記筒状缶体の断面内に少なくとも一部が埋め込まれている、請求項3に記載の筒状缶体。
- 前記コイルが、前記筒状缶体の軸方向に平行な断面において、前記筒状缶体の外周部に設けられており、前記コイルの表面が緩衝材で保持されている、請求項3に記載の筒状缶体。
- 前記筒状缶体の軸方向に平行な断面において、前記コイルよりも径方向外側に位置する電磁遮蔽層をさらに備える、請求項3~5のいずれか一項に記載の筒状缶体。
- 前記絶縁材料が、窒化珪素、サイアロン、炭化珪素、コーディエライト、アルミナ、ジルコニア、シリカ及びムライトのいずれか一種を主成分とするか、またはこれらの複合材料を主成分とする、請求項1~6のいずれか一項に記載の筒状缶体。
- 前記絶縁材料が、アルミナ繊維強化材料またはムライト繊維強化材料である、請求項7に記載の筒状缶体。
- 前記筒状缶体が、外周壁と、前記外周壁の内側に配設され、一方の端面から他方の端面まで貫通して流路を形成する複数のセルを区画形成する隔壁と、を有し、磁性体を備える柱状のハニカム構造体をさらに備える、請求項1~8のいずれか一項に記載の筒状缶体。
- 請求項1~9のいずれか一項に記載の筒状缶体と、緩衝部材を介して前記筒状缶体の内部に収容された磁性体を備えるハニカム構造体と、を有する、誘導加熱触媒装置。
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JPH0828250A (ja) * | 1994-07-18 | 1996-01-30 | Shimadzu Corp | 自動車用誘導発熱式触媒コンバータ |
JPH0874563A (ja) * | 1994-09-07 | 1996-03-19 | Denki Kogyo Co Ltd | 排気ガス浄化装置 |
US20170022868A1 (en) * | 2013-09-18 | 2017-01-26 | Advanced Technology Emission Solutions Inc. | Apparatus and method for gaseous emissions treatment with enhanced catalyst distribution |
JP2019163760A (ja) * | 2018-03-20 | 2019-09-26 | 日本碍子株式会社 | 流体加熱部品、及び流体加熱部品複合体 |
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JPH0828250A (ja) * | 1994-07-18 | 1996-01-30 | Shimadzu Corp | 自動車用誘導発熱式触媒コンバータ |
JPH0874563A (ja) * | 1994-09-07 | 1996-03-19 | Denki Kogyo Co Ltd | 排気ガス浄化装置 |
US20170022868A1 (en) * | 2013-09-18 | 2017-01-26 | Advanced Technology Emission Solutions Inc. | Apparatus and method for gaseous emissions treatment with enhanced catalyst distribution |
JP2019163760A (ja) * | 2018-03-20 | 2019-09-26 | 日本碍子株式会社 | 流体加熱部品、及び流体加熱部品複合体 |
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