WO1999020391A1 - Metal honeycomb structure - Google Patents
Metal honeycomb structure Download PDFInfo
- Publication number
- WO1999020391A1 WO1999020391A1 PCT/JP1997/003773 JP9703773W WO9920391A1 WO 1999020391 A1 WO1999020391 A1 WO 1999020391A1 JP 9703773 W JP9703773 W JP 9703773W WO 9920391 A1 WO9920391 A1 WO 9920391A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- corrugated
- honeycomb structure
- metal honeycomb
- strip
- waveform
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 204
- 239000002184 metal Substances 0.000 title claims abstract description 204
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 119
- 238000004804 winding Methods 0.000 claims description 19
- 238000000746 purification Methods 0.000 abstract description 11
- 239000011888 foil Substances 0.000 description 74
- 238000004519 manufacturing process Methods 0.000 description 29
- 238000005219 brazing Methods 0.000 description 15
- 239000000470 constituent Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 10
- 230000009467 reduction Effects 0.000 description 10
- 230000008646 thermal stress Effects 0.000 description 10
- 230000000295 complement effect Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000035882 stress Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—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
- 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
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
-
- 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
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
- F01N3/2817—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates only with non-corrugated sheets, plates or foils
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
-
- 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
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
- F01N2330/321—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils with two or more different kinds of corrugations in the same substrate
-
- 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
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
- F01N2330/322—Corrugations of trapezoidal form
-
- 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
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
- F01N2330/323—Corrugations of saw-tooth or triangular form
Definitions
- the present invention generally relates to a honeycomb structure (hereinafter simply referred to as a metal honeycomb structure) for supporting an exhaust gas purifying catalyst made of metal and having a honeycomb structure, which is used in an exhaust gas purifying apparatus for an automobile.
- a honeycomb structure hereinafter simply referred to as a metal honeycomb structure
- the present invention relates to a novel structure of a metal honeycomb structure which is a main component of an exhaust gas purifying apparatus (metal carrier). More specifically, the present invention relates to a metal honeycomb structure, which is a main component of an exhaust gas purifying apparatus (metal carrier), which is manufactured using a conventional flat band material.
- the metal honeycomb structure which is an essential component of the exhaust gas purifying apparatus (metal carrier) of the present invention, has a conventional simple waveform structure, for example, a corrugated strip having a triangular waveform or a sine waveform.
- a corrugated strip with a special corrugated structure it has a new special structure.
- Typical example of this kind of conventionally proposed metal honeycomb structure These are shown in Fig. 15 to Fig. 17 including the components.
- this kind of metal honeycomb structure is composed of a heat-resistant thin metal plate made of corrugated strip (corrugated foil) (1) and a flat strip (flat foil) (2 ') Are alternately piled up (see Fig. 15), and are formed into a honeycomb structure (see Figs. 16 to 17) by winding and forming an exhaust gas purifying catalyst (for example, P A catalyst system that uses t, R h, P d, etc.).
- an exhaust gas purifying catalyst for example, P A catalyst system that uses t, R h, P d, etc.
- the metal honeycomb structure (H ′) is housed in a metal casing, that is, a metal casing (C) as shown in FIGS. 16 to 17, and is fixed and fixed to the metal carrier (H ′). MS).
- FIGS. 16 to 17 also use the abbreviations (MS) described above.
- the abbreviation (H) is used for the honeycomb structure.
- the prior art is indicated by a symbol with a dash ( ⁇ ').
- the corrugated band material (corrugated foil) and the flat band material (flat foil), which are constituent members thereof, are denoted by a dashed symbol (1 ′, 2 ').
- the abbreviation (C) is used for metal casing in connection with the casing (Casing).
- the metal honeycomb structure (H ′) shown in FIGS. 16 to 17 described above is formed by winding and laminating a corrugated foil (1 ′) and a flat foil (2 ′). Is commonly referred to as a winding type.
- FIG. 15 is a perspective view of a pair of corrugated foil (1 ′) and flat foil (2 ′), which are components of the above-mentioned conventional wound-type metal honeycomb structure (H ′).
- FIG. 16 shows a perspective view of a metal carrier (MS) produced by housing the above-mentioned conventional wound-type metal honeycomb structure (H ′) in a metal casing (C) and fixing the same. Shows a front view of the metal carrier (MS) shown in FIG.
- MS metal carrier
- the above-mentioned conventional wound-type metal honeycomb structure (H ′) is made of, for example, a corrugated foil (1 ′) made of a heat-resistant thin steel plate of 100 ⁇ or less (preferably 50 ⁇ or less).
- the foil (2 ') is stacked alternately so as to have an abutting portion, and this is spirally formed into a spiral shape to form a large number of mesh-shaped vent holes for the exhaust gas passage in the axial direction.
- This is a honeycomb structure with (cell) (3 ').
- the cells have different shapes and structures due to the difference in the corrugated structure of the corrugated foil.
- prior art cells are indicated by a dashed symbol (3 ').
- metal honeycomb structure ( ⁇ ') for supporting the exhaust gas purifying catalyst that has been conventionally proposed
- corrugated foil (1') and flat foil ( 2 ') various structures are proposed due to the difference in the method of manufacturing the honeycomb structure ⁇
- Japanese Patent Application Laid-Open Nos. 62-273500 and 62-273530 Radial type disclosed in Japanese Patent Application Laid-open No. Hei 11-18637, Japanese Patent Publication No. 3-502660, Japanese Patent Laid-Open No. Hei 2278855, etc. S-shaped (see Fig. 20), Tomoe-shaped (see Fig. 21), and X-wrap (swastika) type (see Fig. 22) metal honeycomb structures ( ⁇ ') are known.
- the conventional wound-type metal honeycomb structure (H ') shown in FIGS. 16 to 17 described above the conventional hierarchical type, radial type, and S type shown in FIGS.
- the laminated (layer) type metal honeycomb structure (H ′) shown in FIG. 18 is a corrugated foil (1 ′) made of a thin metal plate. It is manufactured by laminating (stacking) layers and flat foil (2 ') so that they abut each other.
- the radial-type metal honeycomb structure (H ′) shown in FIG. 19 uses the desired number of purification elements composed of a corrugated foil (1 ′) and a flat foil (2 ′). It is manufactured by fixing one end to a fixed shaft (central shaft) and extending (radiating) each purification element from the fixed shaft.
- the S-shaped or Tomoe-shaped metal honeycomb structure (H ′) shown in FIGS. 20 to 21 is manufactured as follows. That is, a rectangular corrugated foil (1 ') and a flat foil (2') having a desired length and width are alternately laminated in a desired number of stages to form a stack, and the stack is formed. O Can be manufactured using the desired number o
- a rod-shaped jig for winding is disposed substantially at the center of the upper and lower outermost surfaces of one stack, and the jig for winding is arranged. It is manufactured by simultaneously winding tools in the same direction.
- FIG. 20 when one piece of stick is used, as shown in FIG. 20, an S-shaped metal honeycomb structure ( ⁇ ′) in which the constituent members are curved in an S-shape at the central portion. ) Is manufactured.
- ⁇ ′ an S-shaped metal honeycomb structure in which the constituent members are curved in an S-shape at the central portion.
- FIGS. 20 to 21 are shown in FIG. Only some corrugated foils (1 ') and flat foils (2') are shown.
- the X-wrap type metal honeycomb structure (H ') shown in Fig. 22 has a stack (stack) formed by alternately stacking corrugated foil (1') and flat foil (2 ') in a desired number of layers.
- the four stacks (X to XJ) are used, and the stacks mentioned above are brought into contact with each other at one contact end and wound around each contact in the same direction. What is done?
- the metal honeycomb structures (H ') of various structures proposed in the prior art described above are loaded and fixed in a metal casing (C) to form a metal carrier (MS). .
- metal casing (C) which is a component of the metal carrier (M S)
- metal tubular body for containing and fixing the metal honeycomb structure (H ′) therein is used.
- the front (cross-section) shape of the metal casing (C) is not limited to the circular shape shown in FIGS. 16 to 22, but is adapted to the front (cross-section) shape of the metal honeycomb structure (H ′). Shape, for example, oval, It may be oval, race track shaped, polygonal, or any other irregular shape.
- the metal carrier (M S) having the above-described conventional metal honeycomb structures (H ′) of various structures as main components is used under severe thermal environmental conditions such as an exhaust gas system. For this reason, first, at the site of the metal honeycomb structure ( ⁇ '), the contact parts of both foil materials (corrugated foil and flat foil) (1', 2 '), which are the components, are firmly fixed. It is.
- the contact portion is firmly fixed by a fixing method such as brazing or welding so as to withstand the thermal stress.
- the flat foil (1') and corrugated foil ( 2)) is fixed by fixing means such as brazing or welding.
- the method of fixing the desired portion of the contact portion between the flat foil (1 ') and the corrugated foil (2') by brazing or the like is compared with the method of fixing all the contact portions.
- thermal stress can be absorbed and reduced in the non-contact portion.
- the contact surface between the metal honeycomb structure ( ⁇ ') and the metal casing (C) is also strong from the viewpoint of preventing separation due to the thermal stress and vibration of both components. To be fixed.
- the two parts are in contact with each other at the peaks and valleys, and are fixed at the contact points.
- the contact portion cannot carry a catalyst material for purifying exhaust gas, the effective area ratio for carrying the catalyst with respect to the total surface area of both foil materials (1 ′, 2 ′) is low. is there.
- this type of corrugated foil (1 ') and flat foil (2') is used as a heat-resistant Fe-Cr20% -A15% type with a thickness of 50 / m or less.
- Heat-resistant steel foil is extremely expensive, with a weight-based price about 5 times that of SUS304 material with a thickness of about 1.5 mm, and the abutting of both foil materials (1 ', 2') The reduction of the effective area ratio for supporting the catalyst by the part is uneconomical.
- the ratio of the material cost of the heat-resistant steel foil (1 ', 2') to the total cost of the metal carrier (MS) is as high as 50%, and the exhaust of the heat-resistant steel foil (1 ', 2') is large.
- Increasing the effective area ratio for supporting the gas purification catalyst, or improving the exhaust gas purification performance under a predetermined effective area ratio reduces the amount of heat-resistant steel foil (1 ', 2') used. It is strongly demanded from the viewpoint of economy to reduce it.
- the fixing means As the fixing means, a brazing method is employed from the viewpoint of productivity and uniformity of fixing strength.
- the brazing material used is a metal carrier (MS) used under a high-temperature atmosphere. Since brazing filler metal is used, reduction of the amount used is strongly demanded from the viewpoint of economy.
- the point of the reduction in the amount of brazing material used is that the contact area between the two foil materials (corrugated foil and flat foil) (1 ′, 2 ′) is large as described above. Therefore, the heat resistance of both foil materials (1 ', 2') decreases due to the alloying reaction and diffusion reaction between the brazing material components and the metal components of both foil materials (1 ', 2'). In addition, problems such as the activation of the catalyst are induced, and from this aspect, there is a strong demand for a reduction in the amount of brazing material used. Disclosure of the invention
- the present invention has been made in view of the limitations of the above-described conventional metal honeycomb structure (H ′) for supporting an exhaust gas purifying catalyst.
- the present inventors have developed a new metal honeycomb structure. The body was eager and examined.
- the present inventors have characterized the corrugated structure of the corrugated foil (1 ') in the corrugated foil (1') of the conventional metal honeycomb structure (H ').
- the contact loss between the two foil materials (1 ', 2') can be greatly reduced (in other words, the effective use of both foil materials), Significant reduction of back pressure resistance (exhaust gas ventilation resistance), which has a great influence on efficiency, absorption and relaxation of thermal stress, and contact between the contact parts of both foil materials (1 ', 2') O It has been found that excellent operational effects can be obtained, such as saving on expensive foil materials based on significant reduction of loss.
- a corrugated foil (1 ′) that is a constituent member of a conventional metal honeycomb structure (H ′) set the corrugated structure of the corrugated foil (1 ′) to:
- the waveform of the non-contact area (b) is such that the wave height is substantially half the wave height of the conventional corrugated foil (1 '), and the wave front is substantially parallel to the flat foil (2').
- the present invention which has been found that the above-described excellent properties can be expressed, has been completed based on the above-mentioned findings.
- a metal honeycomb structure (H) having a new structure, which is a major component of an exhaust gas purifying mail carrier (MS) which is economical and has excellent characteristics.
- the present invention relates to a corrugated strip made of a thin metal plate (1). ) And a flat strip (2) are alternately contacted with each other to support a honeycomb structured exhaust gas purifying catalyst.
- the corrugated structure of the corrugated strip (1) is
- the area that is not in contact with the flat strip (2) is set to a height that is approximately half (approximately 1/2 ⁇ h) of the wave height (h) of the virtual corrugated sheet (1 ′). Divided to have
- FIG. 1 is a partially enlarged front view of a corrugated strip (1) of a first embodiment applied to a metal honeycomb structure (H) of the present invention.
- FIG. 2 is a partially enlarged front view of the metal honeycomb structure (H) of the present invention constituted by the corrugated strip (1) and the flat strip (2) of FIG. Second embodiment applied to the metal honeycomb body (H) of the invention It is a partially enlarged front view of the corrugated strip
- FIG. 4 is a partially enlarged front view of the metal honeycomb structure (H) of the present invention composed of the corrugated strip (1) and the flat strip (2) of FIG.
- FIG. 5 is a partially enlarged front view of a corrugated strip (1) of a third embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 6 is a partially enlarged front view of a corrugated strip (1) of a fourth embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 7 is a partially enlarged front view of a corrugated strip (1) of the fifth embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 8 is a partially enlarged front view of a corrugated strip (1) of a sixth embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 9 is a front view in which a part of the metal honeycomb structure (H) of the present invention constituted by the corrugated strip (1) and the flat strip (2) of FIG. 8 is omitted.
- FIG. 10 shows the S-shaped metal honeycomb structure (H) of the present invention, which is composed of the corrugated strip (1) and the flat strip (2) of the seventh embodiment, It is a partially enlarged front view of a turning center part.
- FIG. 11 is a diagram illustrating a forming gear for manufacturing the corrugated band material (1) of the first embodiment shown in FIG.
- FIG. 12 is a view for explaining a forming gear for manufacturing the corrugated band material (1) of the second embodiment shown in FIG.
- FIG. 13 is a diagram illustrating a forming gear for manufacturing the corrugated band material (1) of the third embodiment shown in FIG.
- FIG. 14 is a diagram illustrating a forming gear for manufacturing the corrugated band material (1) of the fourth embodiment shown in FIG.
- FIG. 15 is a perspective view of a corrugated strip (1 ′) and a flat strip (2) used for manufacturing a conventional wound-type metal honeycomb structure (H ′).
- Fig. 16 is a perspective view of a metal carrier (MS) composed of a conventional wound-type metal honeycomb structure (H ') and a metal casing (C).
- FIG. 17 is a front view of the conventional metal carrier (MS) shown in FIG. 16 and FIG. 18 is a front view of a conventional hierarchical type metal honeycomb structure (H ′).
- FIG. 19 is a front view in which a part of a conventional radial-type metal honeycomb structure (H ′) is omitted.
- FIG. 20 is a front view in which a part of a conventional S-shaped female honeycomb structure (H ′) is omitted.
- FIG. 21 is a front view in which a part of a conventional tom-shaped metal honeycomb structure (H ′) is omitted.
- Fig. 22 is a front view of a conventional X-wrap (swastika) type metal honeycomb structure (H ') with a part thereof omitted.
- FIG. 1 and 2 are diagrams illustrating the configuration of the metal honeycomb structure ( ⁇ ) of the present invention.
- FIG. 1 is a diagram illustrating a corrugated strip (1) of a first embodiment having a special corrugated structure, which is a constituent member of a metal honeycomb structure ( ⁇ ) of the present invention.
- FIG. 1 is an enlarged front view of the corrugated strip (1).
- FIG. 2 is a corrugated strip (1) of the first embodiment shown in FIG. 1 and a metal honeycomb structure ( ⁇ ). The other component, the flat strip (2) It is a partially enlarged front view of the metal honeycomb structure (H) of the present invention manufactured by using the same.
- FIG. 2 corresponds to a partially enlarged view of the front view of the conventional wound-type metal honeycomb structure ( ⁇ ′) shown in FIG.
- the largest characteristic point is set at the point of the corrugated structure of the corrugated strip (1).
- the corrugated structure of the corrugated strip (1) of the first embodiment of the present invention has the following configuration, as shown in particular in FIG.
- the uniqueness of the corrugated structure of the corrugated strip (1) of the first embodiment of the present invention is easy to compare with the corresponding conventional corrugated strip (1 ′) (see FIG. 15). Can be understood.
- FIG. 1 shows a conventional corrugated strip (1 ′) force and a virtual corrugated sheet (1 ′) in order to show the uniqueness of the corrugated structure of the corrugated strip (1) of the present invention. It is shown.
- the virtual corrugated sheet (1 ′) is, for example, the same kind as the conventional corrugated band material (1 ′) having a simple triangular waveform (see FIG. 15). It is.
- the corrugated strip (1) of the present invention is shown by a solid line, while the conventional corrugated strip (1 ′), that is, the virtual corrugated sheet (1 ′) is described in detail.
- the non-contact area (1b) (the flat area in FIG. 1) of the corrugated strip (1) of the present invention is shown by a dotted line.
- the undulating structure of the virtual corrugated sheet (1 ') has peaks and valleys of each wave with respect to the flat corrugated sheet (2) in the same manner as the conventional corrugated sheet (1'). All parts are in contact, and the wave height is (h) and one wavelength ( A triangular waveform of (one cycle length) ( ⁇ ′) is connected.
- the waveform structure of the virtual corrugated sheet (1 ′) is not limited to the triangular waveform described above, and is the same as that of the conventional corrugated sheet material (1 ′), for example, It goes without saying that it may have a desired shape such as a sine waveform, an omega ( ⁇ ) shape wave, a rectangular wave, or a trapezoidal waveform.
- the corrugated structure of the area of the corrugated band (1) of the present invention in contact with the flat band (2) is obtained by utilizing the waveform of the virtual corrugated plate (1 ').
- the waveform is not limited to the triangular waveform.
- the corrugated strip (1) according to the first embodiment of the present invention is configured as follows.
- corrugated band material (1) having a special structure according to the present invention particularly, its corrugated structure is
- the area (1b) that is not in contact with the flat strip (2) is set to be approximately half (approximately 1Z2h) of the wave height (h) of the virtual corrugated sheet (1 '). height And dividing so as to have a wavefront substantially parallel to the flat strip material (2),
- the area (1c) is a complementary area for completing a waveform of one period length (one unit length) ( ⁇ ). It should be understood that
- the complementary region (1c) has a certain period length (one unit length) (s).
- the region (1c) corresponds to the region (1a) in contact with a different desired number of flat band members with respect to the region (la, lb). It may have a non-contact area (1b). In this case, it is needless to say that the regions (1a, 1b) and the region (1c) jointly constitute one period length (s).
- the adjacent peaks and valleys of the triangular waveform abut on the flat strip material (2), and the pair of peaks and valleys shown in FIG.
- the configuration is not limited to the mode in which the portion abuts on the flat strip material (2).
- two sets may be used, and a desired number of sets may be used.
- the wavefront of the non-contact area (lb) is substantially parallel to the flat strip (2).
- a deformation in the manufacturing process of the corrugated strip (1), or a metal honeycomb structure such as a wound type or an S-shaped type formed of the corrugated strip (1) and the flat strip (2). It should be construed that non-parallel relations due to deformation and the like that occur when forming into () should be allowed.
- the corrugated strip (1) of the first embodiment formed (referenced) on the basis of the virtual corrugated sheet (1 ′) of the present invention has a wave height (h) of a desired size and It can have one cycle length (s).
- the non-contact area (1b) of the corrugated sheet material (1) becomes large, it cannot withstand the processing stress when it is wound and formed with the flat sheet material (2).
- the corrugated shape of the corrugated strip (1) tends to be easily deformed.
- the wave height (h) and the magnitude of one cycle length (s) may be set as desired.
- wave height (h) is 1. O IM! ⁇ 2.5 mm, one cycle length (wave pitch) ( ⁇ ) should be set to 2 ⁇ 10 mm.
- wave pitch As a conventional wound-type metal honeycomb structure (H ′) (see FIGS. 16 to 17), for example, the diameter is 90 mm, the wave height (h) force is 1.4 mm, and the pitch width is 3. Two (cell number 300 cpsi) are known.
- the corrugated band material (1) of the first embodiment which is a constituent member of the metal honeycomb structure (H)
- the corrugated band material (1) of the first embodiment which is a constituent member of the metal honeycomb structure (H)
- the contact loss between the two strips (1, 2) can be greatly reduced as compared with the conventional case.
- the amount of material used can be reduced by about 20% or more compared to the conventional case.
- the contact portion between the two strips (1, 2) can be reduced, so that the expensive high-temperature material used for fixing the contact portion between the two strips (1, 2) can be used.
- the amount of brazing material used can also be reduced.
- the metal honeycomb structure (H) of the present invention has an exhaust gas passage (1) due to the corrugated structure of the corrugated band material (1) of the first embodiment.
- the cell (3) can be set larger than the conventional cell (3 ') (see Fig. 17).
- the metal honeycomb structure (H) of the present invention can significantly reduce the back pressure resistance (air flow resistance), which greatly affects the efficiency of the internal combustion engine, without lowering the exhaust gas purification ability than before. it can.
- the back pressure resistance (air flow resistance) can be reduced by about 15% or more.
- the metal honeycomb structure (H) of the present invention has a large thermal stress generated inside the metal honeycomb structure (H). Can be effectively absorbed and relaxed in the non-contact area (lb) where the corrugated sheet material (1) does not contact the flat sheet material (2). Therefore, the metal honeycomb structure (H) of the present invention has excellent durability.
- the corrugated strip material (1) of the first embodiment having the special corrugated structure is applied, for example, to this kind of metal honeycomb structure application. Conventional corrugated strip
- the corrugated strip (1) of the present invention may be manufactured by corrugating a flat strip (2).
- a flat strip (2) an ordinary metal monolith is used.
- Heat-resistant material such as chrome steel (chromium 13% to 25%), Fe-Cr 20% -Al 5%, etc.
- REM rare earth metal
- the flat band material (2) a material containing A1 or a material provided with an A1 layer on the surface thereof is heat-treated, and the surface thereof is formed in a whisker or mushroom shape. That precipitated alumina (a l 2 ⁇ 3) is preferable.
- the whisker-like alumina layer is preferable because it can strongly hold a push coat layer for supporting an exhaust gas purifying catalyst such as Pt, Pd, and Rh.
- the corrugated band material (1) which is an essential component thereof, is not limited to the above, and various modifications are possible.
- FIGS. 3 and 4 are views illustrating a corrugated strip (1) of a second embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIGS. 3 and 4 correspond to FIGS. 1 and 2 relating to the corrugated band material (1) of the first embodiment applied to the metal honeycomb structure (H) of the present invention.
- the corrugated band material (1) of the second embodiment shown in FIGS. 3 and 4 has a flat wavefront having a height of 1 Z2 ⁇ h (waveform) formed in the non-contact area (lb). Of the virtual corrugated plate (1 ') is set to the length of one wavelength (s') of the virtual corrugated plate (1').
- the corrugated band material (1) according to the first embodiment shown in FIGS. 1 and 2 has a wavefront whose length is a half wavelength (1Z2 • s).
- the shape of the region (1c), that is, the waveform of one period length (one unit length) ( ⁇ ) is completed.
- the shape of the complementary region is different from that of the complementary region (1c) (see FIG. 1) of the first embodiment based on the configuration of the non-contact region (lb).
- the metal honeycomb structure (H) of the present invention manufactured using the corrugated sheet material (1) of the second embodiment shown in FIGS. 3 and 4 is a conventional metal honeycomb structure (H). ') Has excellent characteristics as shown below.
- the configurations of the metal honeycomb structure (H) of the present invention and the conventional metal honeycomb structure (H ′) are as follows.
- Thickness of corrugated strip (1) and flat strip (2) 50 m Wave height: 1.8 mm
- the metal honeycomb structure (H) of the present invention has the following advantages over the conventional metal honeycomb structure (H ′).
- the airflow resistance can be reduced by 15 to 20%.
- the bulk density can be reduced from 770 (g / liter) to 570 (gZ liter).
- FIG. 5 is a view for explaining a corrugated strip (1) of a third embodiment applied to the metal honeycomb structure (H) of the present invention, and is a view corresponding to FIG.
- the shape of the region (1c), that is, the shape of the complementary region for completing the waveform of one period length (one unit length) (S) Is significantly different from those of the first and second embodiments (see FIGS. 1 and 3). That is, the shape of the complementary area (1c) of the corrugated strip (1) of the third embodiment is a shape having both the non-contact area (lb).
- FIG. 6 is a view for explaining a corrugated sheet material (1) of a fourth embodiment applied to the metal honeycomb structure (H) of the present invention, and is a view corresponding to FIG.
- FIG. 7 is a diagram illustrating a corrugated band material (1) of a fifth embodiment applied to the metal honeycomb structure (H) of the present invention, and is a diagram corresponding to FIG.
- the corrugated D-shaped (1) corrugated structure applied to the metal honeycomb structure (H) of the present invention is “virtual corrugated plate”
- FIG. 6 shows an embodiment in which two sets of adjacent peaks and valleys of the triangular waveform abut on the flat strip material (2) among the above-described conditions.
- the waveform structure for one period length (one unit length) ( ⁇ ) has a waveform structure of one period length (s) in addition to the region (1a, lb) as described above.
- the waveform structure for one period length ( ⁇ ) of the corrugated strip material (1) of the present invention is composed of the above-mentioned regions (1a, lb, 1c).
- the complementary region (1c) may be composed of only a portion that comes into contact with the flat strip (2) (see FIGS. 1, 3, and 6), or the flat strip (2c). ) And a part that does not abut the flat strip (2) may be combined (see Figs. 5 and 7).
- the area not in contact with the flat strip (2) is half (1 / 2h) of the height of the virtual corrugated sheet (1 '), and
- the wavefront (2) has a wavefront substantially parallel to it, and the size of the wavefront (width in the traveling direction of the waveform) is a half wavelength of the wavelength (s') of the virtual corrugated sheet (11). Or an integer multiple of two or more half wavelengths (1Z2 • ⁇ ').
- the number of the portions that come into contact with the flat strip (2) and the portions that do not come into contact with the flat strip (2) may be a desired number. Good thing.
- FIGS. 8 to 9 are diagrams illustrating a corrugated band material (1) of a sixth embodiment applied to the metal honeycomb structure ( ⁇ ) of the present invention.
- FIG. 8 is a diagram corresponding to FIG. FIG. 9 shows one example of a wound-type metal honeycomb structure ( ⁇ ) manufactured using the corrugated sheet material (1) and the flat sheet material (2) of the sixth embodiment shown in FIG.
- FIG. 3 is a front view in which a portion is omitted, particularly illustrating a structure of a central portion (winding central portion) region and an outer peripheral portion region of a metal honeycomb structure ( ⁇ ).
- the corrugated band material (1) of the sixth embodiment includes (i) the corrugated band material of the third embodiment whose wave height is (h) (1) (FIG. 3). See)
- the corrugated band material (1) of the sixth embodiment having the above-described corrugated structure is important for manufacturing a wound-type metal honeycomb structure (H). That is, the corrugated strip material (1) of the sixth embodiment is a flat strip material that is another constituent member such that the triangular waveform region (A) is arranged at the winding center and the vicinity thereof. It is used when manufacturing a rolled type honeycomb structure (H) by winding and forming with the material (22-).
- the corrugated strip (1) When manufacturing the wound-type metal honeycomb structure (H), when using the corrugated strip (1) having no triangular waveform region (A), the corrugated strip (1) is flat. Since the rate of contact with the strip-shaped strip (2), that is, the number of abutting parts per unit volume, is smaller than in the case of using the conventional corrugated strip (1 '), processing during winding forming The corrugated part tends to deform due to stress. In particular, since a large processing stress is applied to the center part of the roll forming and the vicinity thereof, the corrugated sheet material (1) of the sixth embodiment is a roll-type metal honeycomb structure (H). This is important in the production of
- FIG. 9 shows that a triangular waveform portion (A) is arranged at the center of the winding and in the vicinity thereof, so that a uniform triangular cell structure can be obtained at that portion, and the wave of the third embodiment can be obtained at other portions.
- the triangular waveform area (A) of the size i.e., the length of the region of the triangular waveform shown in FIG. 8 (A) (1 A) may be set desired to.
- a metal honeycomb structure (H) having a diameter of 100, a radius of 5 mn!
- the length ( 1A ) may be set so that the triangular waveform area (A) exists in a range of about 15 mm.
- the structure of the triangular waveform region (A) is a Various modifications are possible.
- the waveform shape is not limited to a triangular waveform, and its wave height (h) may be the same as or different from that of the corrugated strip (1). Examples are possible.
- FIG. 10 is a diagram illustrating a corrugated strip (1) of a seventh embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 10 shows an S-shaped metal honeycomb structure manufactured by winding and forming a stack composed of a corrugated strip (1) and a flat strip (2) according to the seventh embodiment. It is a figure which shows the area
- This type of S-shaped metal honeycomb structure (H) is made by stacking a desired number of rectangular strips (1, 2) with a desired length and width in a desired number of steps. Then, a jig for rod-shaped winding forming is provided at a substantially intermediate portion between the upper and lower outermost layers, and the jig for winding forming is wound in the same direction.
- the triangular waveform region (A) is disposed at an intermediate portion thereof.
- the corrugated band material (1) of the sixth embodiment (see FIGS. 8 to 9) and the corrugated band material (1) of the seventh embodiment (FIG. 10) ), The location of the triangular waveform area (A) differs.
- the corrugated band material (1) of the seventh embodiment shown in FIG. 10 and the corrugated band material (1) of the sixth embodiment shown in FIGS. They have the same structure.
- a triangular waveform area (A) may be provided in the corrugated strip (1) located at the relevant site (upper and lowermost layers and its neighboring layers), or as shown in FIG.
- a triangular waveform area (A) may be provided in the corrugated strip (1).
- the corrugated band material (1) of the sixth to seventh embodiments that is, a wave having a triangular waveform region (A) in at least a part of the region.
- the plate-shaped band (1) may be manufactured by corrugating a single continuous plate-shaped band, or the triangular waveform region (A) may be formed by another member, It may be manufactured by fixing it to the corrugated band material (1) having a special corrugated structure of the present invention by desired fixing means.
- a desired fixing means such as welding, force crimping, mechanical engagement, or temporary fixing may be adopted.
- the winding-type metal honeycomb structure (H) shown in FIG. 9 is different from the manufacturing method of the winding type metal honeycomb structure (H) in the corrugated band material (1) of the sixth embodiment described above. (See Fig. 8) and the plate-shaped strip (2) are stacked so that they are in contact with each other, and the bracket is not necessarily manufactured by batch winding.
- the center portion is manufactured by a corrugated strip (1 ') having a triangular waveform and a flat strip (2).
- the corrugated strip (1) (see Fig. 3) and the flat strip (2) are fixed to the respective mating members, and subsequently formed by winding to produce a wound-type metal honeycomb structure (H). It is a good thing.
- the present invention is applied to the production of the metal honeycomb structure (H) of the present invention.
- the method for producing the corrugated strip (1) having the above-mentioned various special corrugated structures will be described.
- the corrugated band material (1) having the special waveform structure applied to the metal honeycomb structure (H) of the present invention can be efficiently and economically manufactured using a pair of upper and lower corrugated gears, for example. Can be manufactured.
- FIG. 11 illustrates a forming gear for manufacturing the corrugated band material (1) (see FIG. 1) of the first embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 11 illustrates a forming gear for manufacturing the corrugated band material (1) (see FIG. 1) of the first embodiment applied to the metal honeycomb structure (H) of the present invention.
- the corrugated band material (1) having the corrugated structure of the first embodiment of the present invention shown in FIG. 1 is a pair of upper and lower gears of a first gear (G 1) and a second gear (G 2) shown in the figure. It can be manufactured efficiently and economically with forming gears.
- a drive gear for accurately driving the first and second gears (Gl, G2) is omitted.
- the black portions of the tooth forms of the first gear (G 1) and the second gear (G 2) are used to form a half-mount. Approximately 1 height of Z2 or missing part.
- the first gear (G 1) is formed by having every other tooth form having a tooth form missing as described above, and
- the second gear (G 2) is configured to have a tooth profile in which all tooth profiles are all ridges.
- a half-toothed tooth shape refers to a shape obtained by removing half of the tooth shape.
- the tooth profile of the whole mountain means a tooth profile having a completely corrugated tooth shape.
- the tooth profile of the semi-mountain is composed of the remaining tooth shape obtained by removing substantially half (from the tip of the tooth) of the tooth profile of the whole mountain, and the top of the tooth profile of the semi-mountain is formed substantially flat.
- FIG. 12 illustrates a forming gear for manufacturing the corrugated strip (1) (see FIG. 3) of the second embodiment applied to the metal honeycomb structure (H) of the present invention.
- FIG. 12 illustrates a forming gear for manufacturing the corrugated strip (1) (see FIG. 3) of the second embodiment applied to the metal honeycomb structure (H) of the present invention.
- the first gear (G1) is formed by having every other tooth form having a tooth form missing as described above, and
- the second gear (G 2) is formed of gears in which every other tooth form has a missing tooth form as described above.
- first gear (G 1) and the second gear (G 2) are arranged in the arrangement shown in the figure.
- FIG. 13 is a view for explaining a forming gear for manufacturing the corrugated band material (1) (see FIG. 5) of the third embodiment applied to the metal honeycomb structure (H) of the present invention. It is.
- the first gear (G 1) is formed by having every other tooth form having a tooth form missing as described above, and
- the second gear (G 2) has the same Similarly, it is configured with a missing tooth form.
- first gear (G 1) and the second gear (G 2) are also arranged according to the arrangement shown in the figure.
- FIG. 14 is a view for explaining a forming gear for manufacturing a corrugated strip (1 ⁇ _ (see FIG. 6)) of the fourth embodiment applied to the metal honeycomb structure (H) of the present invention. is there.
- the first gear (G 1) is formed by having every other tooth form having a tooth form missing as described above, and
- the second gear (G 2) is formed of a gear in which every third tooth form has a missing tooth form as described above.
- first gear (G 1) and the second gear (G 2) are arranged in the arrangement shown in the figure.
- the corrugated band material (1) having a special corrugated structure applied to the metal honeycomb structure (H) of the present invention is described with reference to the manufacturing method described with reference to FIGS.
- the waveform structure is that of a virtual corrugated sheet (1 '), in other words, a corrugated sheet material (1') of a simple corrugated structure such as a conventional triangular or sinusoidal waveform. Is completely different.
- the virtual corrugated sheet (1) in other words, the conventional corrugated sheet material (1 ′) having a simple corrugated structure is, for example, a pair of upper and lower forming gears (G1, G2) shown in FIG.
- the waveform structure of 1) is a virtual corrugated sheet (1), in other words, a conventional corrugated strip (1 ').
- the metal honeycomb structure (H) of the present invention is a novel structure having a completely different structure from the metal honeycomb structure (H ') manufactured using (2'). Instead of the conventional simple corrugated structure, it is composed of a corrugated band material (1) and a flat band material (2) having a special corrugated structure. In particular, the corrugated structure of the corrugated strip (1)
- the area that is not in contact with the flat strip material (2) has a height that is approximately half (approximately 1Z2 ⁇ h) of the wave height (h) of the virtual corrugated sheet (1 ′). Divided into
- the metal honeycomb structure (H) of the present invention does not exist in the related art as described below due to the special corrugated structure of the corrugated sheet material (1) which is a constituent member of the metal honeycomb structure (H). It can have excellent effects.
- the corrugated strips (1) and the flat strips (2) which are the constituent members of the metal honeycomb structure (H) of the present invention, are formed by the corrugated structure of the corrugated strip (1).
- the contact loss due to the contact between the two strips (1, 2) can be greatly reduced compared to the conventional case.
- the corrugated strip (1) having a special corrugated structure according to the present invention (1) has a smaller contact force with the flat corrugated strip (2) than the conventional corrugated strip (1). This is because it is configured as follows.
- the large reduction in the contact loss described above can be achieved by increasing the effective surface area ratio of the expensive strip (1, 2) for supporting the exhaust gas purifying catalyst.
- the reduction of the contact loss between the two strips (1, 2) can be achieved by reducing the amount of expensive strips (1, 2) used, making the metal honeycomb structure (H) compact, and reducing the size. It leads to the transformation.
- the large saving of the expensive strip (1, 2) contributes to the improvement of the startability of the metal honeycomb structure (H). This is because the heat capacity of the metal honeycomb structure (H) is reduced and the warm-up characteristics are improved by greatly saving the band material (1, 2), and the metal honeycomb structure (H) is rapidly heated. The optimum catalytic reaction temperature can be reached in a short time.
- the exhaust gas vent holes (cells) of the metal honeycomb structure (H) are larger than those of the conventional one. Can be set.
- the back pressure resistance (venting resistance) which greatly affects the efficiency of the internal combustion engine, is set to be much smaller than before without lowering the exhaust gas purification ability. be able to. That is, the metal honeycomb structure (H) of the present invention can achieve high exhaust gas purification performance without lowering the efficiency of the internal combustion engine.
- the thermal stress and the thermal deformation force generated inside the metal honeycomb structure (H) can be effectively reduced in a region where the corrugated strip (1) does not abut the flat strip (2). Absorbed and relaxed. For this reason, the metal honeycomb structure (H) of the present invention has excellent durability.
- the corrugated sheet material which is a constituent member thereof, has a new corrugated structure not seen in the past.
- the metal honeycomb structure of the present invention can greatly reduce the amount of expensive corrugated band material and flat band material used, Significant reduction in filter material for high temperature use and excellent properties such as airflow resistance and startability 0
- the metal honeycomb structure using the corrugated strip having the new corrugated structure of the present invention is suitable for an exhaust gas purification device (MS).
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8220789A JPH1043605A (en) | 1996-08-05 | 1996-08-05 | Metal honeycomb structure |
US09/341,884 US6602477B2 (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb structure |
PCT/JP1997/003773 WO1999020391A1 (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb structure |
DE19782284T DE19782284T1 (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb central body |
GB0007896A GB2345006B (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb core body |
KR1019990705183A KR20000057501A (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8220789A JPH1043605A (en) | 1996-08-05 | 1996-08-05 | Metal honeycomb structure |
PCT/JP1997/003773 WO1999020391A1 (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb structure |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999020391A1 true WO1999020391A1 (en) | 1999-04-29 |
Family
ID=26438230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/003773 WO1999020391A1 (en) | 1996-08-05 | 1997-10-20 | Metal honeycomb structure |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH1043605A (en) |
KR (1) | KR20000057501A (en) |
DE (1) | DE19782284T1 (en) |
GB (1) | GB2345006B (en) |
WO (1) | WO1999020391A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113982724A (en) * | 2021-10-12 | 2022-01-28 | 台州三元车辆净化器有限公司 | Novel metal honeycomb carrier |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02160051A (en) * | 1988-12-13 | 1990-06-20 | Usui Internatl Ind Co Ltd | Metal carrier of catalyst for purification of exhaust gas |
JPH02261518A (en) * | 1989-04-03 | 1990-10-24 | Usui Internatl Ind Co Ltd | Waste gas cleaning device |
-
1996
- 1996-08-05 JP JP8220789A patent/JPH1043605A/en active Pending
-
1997
- 1997-10-20 GB GB0007896A patent/GB2345006B/en not_active Expired - Fee Related
- 1997-10-20 KR KR1019990705183A patent/KR20000057501A/en not_active Application Discontinuation
- 1997-10-20 WO PCT/JP1997/003773 patent/WO1999020391A1/en not_active Application Discontinuation
- 1997-10-20 DE DE19782284T patent/DE19782284T1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02160051A (en) * | 1988-12-13 | 1990-06-20 | Usui Internatl Ind Co Ltd | Metal carrier of catalyst for purification of exhaust gas |
JPH02261518A (en) * | 1989-04-03 | 1990-10-24 | Usui Internatl Ind Co Ltd | Waste gas cleaning device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113982724A (en) * | 2021-10-12 | 2022-01-28 | 台州三元车辆净化器有限公司 | Novel metal honeycomb carrier |
Also Published As
Publication number | Publication date |
---|---|
GB2345006B (en) | 2001-06-27 |
DE19782284T1 (en) | 2000-10-26 |
GB0007896D0 (en) | 2000-05-17 |
JPH1043605A (en) | 1998-02-17 |
KR20000057501A (en) | 2000-09-15 |
GB2345006A (en) | 2000-06-28 |
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