KR20000057501A - Metal honeycomb structure - Google Patents

Abstract

PURPOSE: A metal honeycomb structure is provided, in which a corrugated sheet-like member having a specific corrugation structure touches a flat sheet-like member less than an existing corrugated sheet-like member. CONSTITUTION: A metal honeycomb structure for supporting an exhaust gas purification catalyst is characterized in that: a corrugation structure of a corrugated sheet-like member (1) is formed by: (i) utilizing the wave form of an imaginary corrugated sheet (1') formed by connecting the wave forms each having a desired wave height (h) for one period length (λ'); (ii)-1 defining one period length (λ) of a new waveform including an area in which the wave form of the imaginary corrugated shape touches a flat sheet-like member (2) at the mountain and the valley of at least one set of adjacent waves and an area which continues from the former area and in which the wave form does not touch the flat sheet-like member; (ii)-2 defining the non-contact area with the flat sheet-like member so that it has substantially a half of the wave height (approx. 1/2.h) of the imaginary corrugated sheet; and (iii) connecting the wave forms of the period length defined by utilizing the wave form of the imaginary corrugated sheet.

Description

Metal Honeycomb Structure

As described above, the metal honeycomb structure, which is an essential component of the exhaust gas purifying apparatus (metal carrier) of the present invention, has a special waveform structure instead of the conventional simple wave structure, for example, a triangular wave or a sinusoidal wave plate. Since a wave-like strip material having the same is used, it is of a novel special structure.

The prior art will now be described with respect to the metal honeycomb structure of the novel special structure of the present invention described above.

A typical example of this type of conventionally proposed metal honeycomb structured body is shown in Figs. 15 to 17, including its constituent members.

As shown, this kind of metal honeycomb structural body H 'alternately overlaps the heat-resistant thin metal sheet of wave-like strip material (wave) 1' and flat plate-like strip material (flat) 2 '. (See Fig. 15), a honeycomb structural body (refer to Figs. 16 to 17) fabricated by winding and shaping the same to support an exhaust gas purification catalyst (for example, a catalyst system using Pt, Rh, Pd, etc.) It is a mother for.

Thus, the honeycomb structure H 'is accommodated in a metal casing, that is, inside the metal casing C, and fixed as shown in Figs. 16 to 17 to form a metal carrier MS.

The metal carrier is referred to in the art as a metal support or a metal substrate, and the abbreviation symbol MS is used. In this sense, the abbreviation | symbol MS mentioned above is used also for FIGS.

In the case of the metal honeycomb structured body, the symbol H is used because of the honeycomb structured structure. Moreover, in order to distinguish the present invention from the prior art, the prior art is represented by a dashed symbol H '. In addition, the constituent members of the wave plate-like strip (plate) and the plate-shaped strip (plate) are represented by dashed symbols (1 ', 2') to distinguish the present invention from the prior art. .

In addition, in the metal casing, a symbol C is used due to the casing.

As a metal honeycomb structural body H 'for supporting the above-mentioned conventional catalyst for exhaust gas purification, each group is proposed.

The metal honeycomb structural body H 'shown in Figs. 16 to 17 is formed by laminating a thin foil 1' and a flat foil 2 ', so that a rolling type is known in the art. Abbreviated as

Furthermore, Fig. 15 shows a perspective view of one set of foil 1 'and flat foil 2', which is a constituent member of the conventional wound-type metal honeycomb structure H 'described above, and Fig. 16 shows the above-mentioned. FIG. 17 illustrates a perspective view of a metal carrier MS fabricated by accommodating a conventional wound type metal honeycomb structure H 'into a metal casing C and fixing the same. FIG. 17 illustrates the metal carrier MS of FIG. A front view of the is shown.

The conventional wound honeycomb structure H 'of the conventional winding type is, for example, a foil 1' made of heat resistant thin steel sheet having a thickness of 100 µm or less (preferably 50 µm or less) and flat foil ( 2 ') are alternately superimposed so as to have a contact portion, and are wound and molded in a batch vortex to form a honeycomb structure having a plurality of mesh vents [(cell)] for the exhaust gas passage in the axial direction. It is done. Furthermore, in the present invention and the prior art, the cells have different shapes and structures due to the difference in wave shape of the wave. For this reason, in order to distinguish the present invention from the prior art, the cells of the prior art are represented by the dashed symbol 3 '.

In addition, as a metal honeycomb structure (H ') for supporting a catalyst for exhaust gas purification proposed in the related art, a honeycomb structured structure is made of a thin foil (1') and a flat foil (2 ') in addition to the coiling type described above. By the difference of the manufacturing method, the thing of the structure of each set is proposed.

For example, the layer type (refer FIG. 18) which laminated | stacked both thin materials 1 'and 2' in the layer shape is known.

Moreover, the radial type disclosed in Japanese Patent Laid-Open No. 62-273050, Japanese Patent Laid-Open No. 62-273051, Japanese Patent Laid-Open No. Hei 1-218637, Japanese Patent Laid-Open No. 3-502660, Japanese Patent Laid-Open No. 4-227855, etc., S Metal honeycomb structures H 'of the female type (see FIG. 20), the vortex type (see FIG. 21), and the X-lap (X-shape) type (see FIG. 22) are known.

The conventional hierarchical type, radial type, S-shaped type, vortex type shown in Figs. 18-22 described above including the conventional wound type metal honeycomb structure H 'shown in Figs. 16-17 described above. Various metal honeycomb structures H ', such as X-wrap type, and the like, have a wave-shaped band member (wave) having a special wave structure of the present invention, which describes wave 1', which is its constituent member. It can be configured by replacing with (1).

That is, since the metal honeycomb structural body H 'of various structures described above has a depth relationship with the present invention, the metal honeycomb structural body H' of these various structures will be described in detail below. .

Among the metal honeycomb structural bodies H 'having various structures described above, the metal honeycomb structural body H' of the laminated (hierarchical) type shown in Fig. 18 is a paving 1 'made of a thin metal sheet and a flat foil 2'. ) Are manufactured by laminating (overlapping) hierarchically to contact each other.

The metal honeycomb structural body H 'of the radial type shown in Fig. 19 uses a desired number of purifying elements that are made of wave 1' and flat foil 2 ', and one end of the purifying element has a fixed shaft ( In addition to being fixed to the central axis, it is manufactured to extend (spin) each purification element on the fixed axis.

Moreover, only some of the purifying elements are shown for clarity of the drawings.

The S-shaped or vortex type metal honeycomb structural body H 'shown in FIGS. 20-21 is manufactured as follows.

That is, the rectangular wave 1 'and the flat foil 2' having a desired length and width are alternately stacked in a desired number of stages to form a stack, and the desired stack is desired. It is prepared using the singular.

For example, the S-shaped type (see Fig. 20) is provided with a rod-shaped winding jig for approximately the center of the top and bottom outer surfaces of one stack, and the winding molding jig. It is produced by winding in the same direction at the same time.

Furthermore, this type of S-shaped and vortex type metal honeycomb structure H ', when inserted and fixed in the metal casing C, has both ends of both foils 1' and 2 'constituting the stack. It has a structure of contacting the inner wall surface of (C). For this reason, since the thermal stress (heat deformation force) generated inside the metal honeycomb structural body H 'can be effectively absorbed and relaxed at the contact portion thereof, this type of S-shaped and spiral type metal honeycomb structural body (H ') becomes excellent in durability.

In the above manufacturing method, when one stack is used, as shown in Fig. 20, an S-shaped metal honeycomb structure H 'is formed in which an constituent member is curved in an S-shape on a central portion. If three stacks are used, as shown in Fig. 21, a spiral type one in which three stacks have three vortex shapes on the center portion is obtained. 20 to 21 show only a part of the foil 1 'and the plain foil 2' for clarity of the drawings.

The metal honeycomb structure H 'of the X-wrap type shown in Fig. 22 uses four stacks (X1 to X4) formed by alternately stacking the thin foil 1' and the flat foil 2 'in a desired number of stages. In addition, the stacks are manufactured by contacting each stack at one end of the contact and winding each stack in the same direction about the contact end.

When this type of X-wrap type metal honeycomb structure H 'is inserted into and fixed in the metal casing C, one end of each of the wave 1' and the flat foil 2 'of each stack is metal casing C. It is of a structure in contact with the inner wall surface.

As is clear from the description of the above-described manufacturing method and as shown in Fig. 22, on the center of the metal honeycomb structure H ', each stack is combined in an X-shape, so this kind of metal in the art The honeycomb structural body H 'is referred to as an X-wrap type. 22 shows only a part of the foil 1 'and the plain foil 2', for the sake of clarity.

The metal honeycomb structured body H 'having various structures proposed above is housed in the metal casing C and fixed to be a metal carrier MS.

As the metal casing C which is a component of the metal carrier MS, a metal cylindrical body for accommodating and fixing the metal honeycomb structure H 'inside thereof is used.

The front face (cross section) shape of the metal casing C is not limited to the circular one shown in Figs. 16 to 22, and examples of the shape suitable for the front face (cross section) shape of the metal honeycomb structure H 'are given as examples. For example, it may be of oval, long circle, race track shape, polygonal shape or other shape.

The metal carrier MS whose main components are the metal honeycomb structural body H 'of various conventional structures described above is used in an extreme thermal environmental condition called an exhaust gas system. To this end, first, in the site of the metal honeycomb structure H ', the contact portions of both foils (wave and flat foils) 1' and 2 ', which are its constituent members, are firmly fixed.

This is because the metal honeycomb structure H 'is at a high temperature due to the high temperature of the exhaust gas itself and an exothermic reaction between the exhaust gas and the supported catalyst for purifying exhaust gas, and thus generates a large thermal stress due to such a high temperature atmosphere. This is because the contact portion is firmly fixed by a fixing method such as solder joint or welding so as to withstand the thermal stress.

For example, in order to effectively absorb and alleviate the large thermal stress generated inside the metal honeycomb structural body H ', the flat foil 1' and the pulverization 2 'of the desired part inside the honeycomb structural body H'. ) Is fixed by fixing means such as solder joint or welding. Furthermore, the method of fixing the desired portion of the contact portion of the flat foil 1 'and the wave foil 2' by soldering or the like absorbs thermal stress in the non-contact portion as compared with the method of fixing the entire contact portion. It can be mitigated.

Secondly, the contact surface portion of the metal honeycomb structure H 'and the metal casing C is also firmly fixed in view of the prevention of transfer based on the thermal stress and vibration of both components.

Moreover, as described above, a large thermal stress is generated inside the metal honeycomb structure H ', which concentrates and accumulates at the contact surface portions of both components, causing transfer of both components, but the thermal stress described above. In order to absorb and alleviate the problem, a method of fixing a specific portion of the contact surface portions of both components by solder bonding or the like has also been proposed.

As described above, the wave foil 1 'and the flat foil 2', which are the constituent members of the metal honeycomb structure H ', which are the main components of the conventional metal carrier MS, are formed with the peaks of the foil 1'. They are in contact with each other in the gorge, and moreover, they are fixed in the contact area.

Accordingly, the contact portion cannot support the catalyst material for exhaust gas purification, so that the effective area ratio for supporting the catalyst with respect to the entire surface area of both foil materials 1 'and 2' becomes low.

The defect that the effective area ratio of both said foil materials 1 'and 2' becomes low is demonstrated more concretely as follows.

That is, the heat-resistant steel foil such as the heat-resistant Fe-Cr 20% -Al 5% system having a thickness of 50 µm or less, which is used as this kind of foil 1 'and flat foil 2', has a weight-based (weight- The cost of the base) is extremely high, about five times higher than that of the material of SUS304 having a thickness of about 1.5 mm, and the lowering of the effective area ratio for supporting the catalyst by the contact portions of both foils 1 'and 2' is uneconomical.

As a result, the ratio of the material ratio of the heat resistant foils 1 'and 2' to the cost of the entire metal carrier MS reaches 50%, and is for supporting the catalyst for purifying exhaust gases of the heat resistant foils 1 'and 2'. Increasing the effective area ratio, or improving the exhaust gas purifying ability at a predetermined effective area ratio, and reducing the amount of the heat resistant steel foils 1 'and 2' is strongly demanded from the viewpoint of economics.

Moreover, the point which should be examined in the conventional metal carrier MS is the fixing means applied to manufacture of the metal carrier MS. As described above, in the manufacture of the metal carrier MS, the contact portions of both foils (wave and flat) 1 'and 2' constituting the metal honeycomb structural body H 'and the metal honeycomb structural body H'. ) And the metal casing (C) are bonded by fixing means such as solder bonding or welding in terms of durability.

As the fixing means, a solder joint method is generally adopted in view of productivity, uniformity of bonding strength, and the like. However, in the above solder joint method, the solder material used is a condition of use under the high temperature range of the metal carrier MS. For example, an expensive high temperature solder material such as Ni-based or Ni-Cr-based is used. In view of the above, there is a strong demand for reduction of the amount of use thereof.

In addition, since the contact area of both foil materials (wave and flat foils) 1 'and 2' is large as mentioned above, the reduction of the amount of the solder material used is large, and the solder material used is large, Problems such as alloying reaction of both foil materials 1 'and 2' with metal components, reduction of heat resistance of both foil materials 1 'and 2' due to diffusion reaction, furthermore, activation of catalyst, etc. Also in this respect, the reduction of the amount of solder materials is strongly demanded.

Disclosure of the Invention

The present invention has been devised in view of the limitations of the metal honeycomb structural body H 'for supporting the conventional catalyst for purifying exhaust gas.

The present inventors earnestly examined and examined the metal honeycomb structure of a new structure.

As a result, in the pulsation 1 'of the structural member of the conventional metal honeycomb structural body H', the present inventors changed the wave structure of the pulsation 1 'to the thing of a special structure, so that both foil materials 1', 2 ') greatly reduces the contact loss (in other words, effective use of both foils), greatly reduces the back pressure resistance (ventilation resistance of the exhaust gas), and absorbs thermal stress. In addition, on the basis of the significant reduction in the contact loss of the contact portion of both foil materials 1 'and 2', it was found that the saving of expensive foil materials and the like can provide an excellent effect.

That is, the inventors of the present invention, in the wave 1 'which is a constituent member of the conventional metal honeycomb structure H', the wave structure of the wave 1 ',

(Iii). Having an area a in contact with the flat foil 2 ',

(Ii). It has a non-contact area (b) which does not contact the flat foil (2 ') connected to the area (a) in contact with the flat foil (2'),

(Iii). Let the wave form of the said non-contact area b be about half the height of the wave height of the conventional wave 1 ', and its wave surface shall be substantially planar to the flat foil 2',

(Iii). When the non-contact area b, which does not contact the area a in contact with the flat foil 2 ', is configured as a repeating unit for one cycle length, it was found that excellent characteristics can be expressed as described above.

The present invention has been completed based on the above findings.

According to the present invention, there is provided a metal honeycomb structural body H 'of a novel structure which is a major component of the metal carrier MS for purifying exhaust gas, which is economical and excellent in further characteristics.

SUMMARY OF THE INVENTION The present invention relates to a metal honeycomb structure for carrying a catalyst for purifying exhaust gases of a honeycomb structure produced by alternately contacting a thin plate-like strip material 1 and a plate-shaped strip material 2 made of thin metal plates. The wave structure of the wave-shaped band member 1 is

(Iii). The waveform of the virtual wave plate 1 'formed by contacting the flat band member 2 with the peak portion and the gorge portion of each wave, and concatenating the waveform of one cycle length λ' having a desired wave height h. Using

(Ii) -1. The wave form of the said virtual wave plate 1 'is connected to the area | region which contacts the plate-shaped strip material 2 in the peak part and the valley part of at least 1 set of adjacent waves, and the area | region which contacts the said plate-shaped strip material 2. One period of length (λ) of a new waveform having an area including a non-contact area is formed in one flat strip material 2, and further

(Ii) -2. A non-contact region is formed in the flat strip member 2 so as to have a height of approximately half (about 1/2 · h) of the crest height h of the virtual wave plate 1 ',

(Iii). It relates to a metal honeycomb structured structure, characterized in that it is formed by connecting the folds of the one cycle length (λ) formed by using the waveform of the virtual wave plate (1 ').

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a honeycomb structure (hereinafter, simply referred to as a metal honeycomb structure) for carrying a catalyst for purifying exhaust gas of a metal honeycomb structure used in an exhaust gas purifying apparatus for automobiles.

Specifically, the present invention relates to a novel construction of a metal honeycomb structure, which is a major component of an exhaust gas purifying apparatus (metal carrier).

More specifically, the present invention is a metal honeycomb structure, which is a major component of the exhaust gas purifying apparatus (metal carrier), a conventional planar strip (planer foil) and wave-shaped strip material (wave) Instead of superimposing a corrugated foil, it relates to a novel metal honeycomb structure constructed by using a wave-shaped strip material having a special corrugated structure.

Fig. 1 is a partially enlarged front view of the wave-like strip material 1 of the first embodiment applied to the metal honeycomb structural body H 'of the present invention.

FIG. 2 is a partially enlarged front view of the metal honeycomb structural body H 'of the present invention composed of the plate-like strip material 2 of the wave-shaped strip material 1 of FIG.

Fig. 3 is a partially enlarged front view of the wave plate-shaped band member 1 of the second embodiment applied to the metal honeycomb structural body H 'of the present invention.

4 is a partially enlarged front view of the metal honeycomb structural body H 'of the present invention composed of the wave-like strip material 1 and the flat strip material 2 of FIG.

Fig. 5 is a partially enlarged front view of the wave-shaped strip member 1 of the third embodiment applied to the metal honeycomb structural body H 'of the present invention.

Fig. 6 is a partially enlarged front view of the wave-shaped strip member 1 of the fourth embodiment applied to the metal honeycomb structural body H 'of the present invention.

Fig. 7 is a partially enlarged front view of the wave-shaped strip member 1 of the fifth embodiment applied to the metal honeycomb structural body H 'of the present invention.

Fig. 8 is a partially enlarged front view of the wave-shaped strip member 1 of the sixth embodiment applied to the metal honeycomb structural body H 'of the present invention.

Fig. 9 is a front view in which a part of the metal honeycomb structural body H of the present invention composed of the wave-like strip material 1 and the flat strip material 2 of Fig. 8 is omitted.

Fig. 10 is a partially enlarged front view of the wound center portion of the S-shaped metal honeycomb structural body H of the present invention constituted of the wave-like strip material 1 and the flat strip material 2 of the seventh embodiment.

FIG. 11 is a view for explaining a forming gear for manufacturing the wave-shaped band member 1 of the first embodiment shown in FIG.

FIG. 12 is a view for explaining a molding gear for manufacturing the wave-shaped band member 1 of the second embodiment shown in FIG.

FIG. 13 is a view for explaining a molding gear for manufacturing the wave-shaped band member 1 of the third embodiment shown in FIG.

FIG. 14 is a view for explaining a molding gear for manufacturing the wave-shaped band member 1 of the fourth embodiment shown in FIG.

Fig. 15 is a perspective view of a wave plate-like strip material 1 'and a plate-shaped strip material 2' used for producing a conventional wound-type metal honeycomb structural body H '.

Fig. 16 is a perspective view of a metal carrier MS made of a conventional wound metal honeycomb structural body H 'and a metal casing C.

FIG. 17 is a front view of the conventional metal carrier MS of FIG.

18 is a front view of a conventional hierarchical type metal honeycomb structural body H '.

Fig. 19 is a front view in which a part of the conventional radial type metal honeycomb structure H 'is omitted.

Fig. 20 is a front view in which a part of the conventional S-shaped metal honeycomb structure H 'is omitted.

Fig. 21 is a front view in which a part of the conventional vortex type metal honeycomb structural body H 'is omitted.

Fig. 22 is a front view in which a part of the conventional X-wrap type metal honeycomb structural body H 'is omitted.

In addition, in each said figure, the meaning of the code | symbol in a figure is as follows.

MS… … … Metal carrier

H… … … Metal honeycomb structure of the present invention

C… … … Metal casing

One … … … Wave plate

1a. … … Contact area for the flat strip material 2

1b. … … Non-contact area for the flat strip material (2)

h… … … Digging

? … … 1 wavelength (1 cycle length)

A… … … Triangular waveform area added to wave-shaped band member 1

2 … … … Plate-like strip material for metal honeycomb structural body (H) of the present invention

3…. … … Exhaust gas ventilating channel (cell) of the metal honeycomb structural body H of the present invention

One' … … … Virtual wave plate (conventional wave plate strip material)

2' … … … Flat strip material for conventional metal honeycomb structural body H '

3 '… … … Exhaust Gas Ventilation Channel (Cell) of Conventional Metal Honeycomb Structure (H ')

Best Mode for Carrying Out the Invention

Hereinafter, the technical configuration and embodiment of the present invention will be described in detail with reference to the drawings.

Moreover, the present invention is not limited to the illustrated one.

1 to 2 illustrate the structure of the metal honeycomb structural body H of the present invention.

FIG. 1 is a diagram for explaining a wave-shaped band member 1 of a first embodiment having a special corrugated structure, which is a constituent member of the metal honeycomb structural body H of the present invention. In addition, Fig. 1 is an enlarged front view of the wave-shaped band member 1.

FIG. 2 is a metal honeycomb structural body of the present invention manufactured using the plate-shaped band material 2 which is another constituent member of the wave-shaped band material 1 and the metal honeycomb structural body H of the first embodiment shown in FIG. Partial enlarged front view of (H). Furthermore, FIG. 2 corresponds to an enlarged view of a part of the conventional wound honeycomb structural body H 'of the conventional wound type shown in FIG.

As shown in Figs. 1 and 2, in the metal honeycomb structural body H of the present invention, the largest feature point is the point of the wavy structure of the wave-shaped band member 1.

In particular, the waveform structure of the wave-shaped band member 1 of the first embodiment of the present invention has the following configuration, as shown in FIG.

The specificity of the waveform structure of the wave-shaped strip material 1 of the first embodiment of the present invention can be easily understood in comparison with the corresponding conventional wave-shaped strip material 1 '(see Fig. 15).

Furthermore, in Fig. 1, the conventional wave-shaped strip material 1 'is shown as a virtual wave plate 1' in order to show the specificity of the wave structure of the wave-shaped strip material 1 of the present invention.

In the present invention, the virtual wave plate 1 'is the same as the wave plate-like band member 1' (see Fig. 15) having, for example, a conventional simple triangular waveform as is apparent from the above definition.

In Fig. 1, the wave-like strip material 1 of the present invention is indicated by a solid line portion, while the conventional wave-like strip material 1, that is, the virtual wave plate 1 'will be described later in detail, but the wave plate of the present invention is The non-contact area 1b (flat area in Fig. 1) of the upper strip material 1 is shown by the dotted line.

As shown in the figure, the wave structure of the virtual wave plate 1 'is similar to the conventional wave-like strip material 1', and the peaks and valleys of each wave contact the plate-like strip material 2, and furthermore, As (h), triangular waveforms of one wavelength (one cycle length) λ 'are concatenated.

Furthermore, in the present invention, the waveform structure of the virtual wave plate 1 'is not limited to that of the triangular waveform described above. It may have a desired shape such as a waveform structure like the conventional wave-shaped band member 1 ', such as a sinusoidal wave, an omega (Ω) wave, a rectangular wave, or a trapezoidal wave.

Therefore, the waveform structure of the area | region which contacts the plate-shaped strip material 2 of the wave plate-shaped strip material 1 of this invention is clear from what is formed and comprised on the waveform using the waveform of the said virtual wave plate 1 'by definition. As described above, the present invention is not limited to the triangular waveform.

As shown in FIG. 1, the wave-shaped strip | belt-shaped material 1 of 1st Embodiment of this invention is comprised as follows.

In other words, in the wave-like band member 91 of the special structure of the present invention, the wave structure is particularly shown in Fig. 1,

(Iii). The virtual wave plate 1 'formed by contacting the flat portion of the wave material with the peak portion and the gorge portion of each wave and connecting triangular waveforms each having a desired wave height (h') to one cycle length (λ '), In other words, using the waveform of the conventional simple wave-shaped strip | belt-shaped strip material 1 '(refer FIG. 15) employ | adopted in the prior art,

(Ii) -1. One set of adjacent wave peaks and gorges of the wave of the virtual wave plate 1 'is in flat plate shape in contact with the region 1a in contact with the flat plate material 2 and the contact area 1a. In the band member 2, one cycle length λ of a new waveform, which becomes the region 1b + 1c including the non-contact region 1b, is formed.

(Ii) -2. The region 1b of the non-contact region 1b of the plate-shaped band member 2 is approximately half (about 1/2 · h) of the height h of the virtual wave plate 1 ', and the plate-shaped band member 2 is formed. To have a wavefront that is approximately parallel to

(Iii). In this way, the waveform formed by the one cycle length? Formed on the virtual wave plate 1 'is concatenated.

As shown in Fig. 1, in the regions 1a, 1b and 1c, the region 1c can be understood to be a complementary region for completing a waveform of one cycle length (one unit length) lambda. have.

When the complementary region 1c is shown in any one cycle length (1 unit length) lambda as shown in Fig. 1 or Fig. 3 and Figs.

(Iii). In contact with the non-contact area 1b, moreover

(Ii). The following one-period quality (one unit length) is configured to connect to the contact area 1a of the waveform of?.

In the present invention, the region 1c is not in contact with the region 1a in contact with the desired number of flat strips with respect to the regions 1a and 1b, as shown in FIG. 7 described later. You may have (1b). In this case, the regions 1a and 1b and the region 1c may jointly form one cycle length λ.

In the present invention, in the contact region 1a, the triangular wave-shaped adjacent peak portion and the valley portion contact the flat band member 2, the set of peak portions and the valley portion shown in FIG. It is understood that the present invention is not limited to the one in contact with the upper band material 2, and may be, for example, two sets as shown in FIG. 6 to be described later, and one having a desired set number.

Moreover, the meaning that the wavefront of the non-contact area 1b is substantially parallel to the flat band member 2 can be widely understood. For example, the deformation | transformation in the manufacturing process of the wave-shaped strip material 1, or the wave-shaped strip material 1 and the plate-shaped strip material 2 can be shape | molded by metal honeycomb structure | structures H, such as a winding type or an S-shape type. Non-parallel relations due to deformations, etc., may be interpreted as being acceptable.

The wave-shaped strip material 1 of the first embodiment formed on the basis of the above-described virtual wave plate 1 'of the present invention can have a desired height crest (h) and one cycle length (λ). have.

In the present invention, in general, when the non-contact area 1b of the wave-like strip material 1 becomes large, it will not withstand the processing stress when winding together with the flat strip-like band material 2, and the The waveform shape tends to be susceptible to deformation. In order to improve the above point, the wave structure of the wave-shaped band member 1 of the present invention is a wave form of the virtual wave plate 1 ', and the relationship between pitch P and wave height h is, for example, P It is preferable to define using the reference of: h = 1: 1-1: 10.8 (reference). In addition, although it mentions later in detail, the wave-shaped strip | belt-shaped material 1 of this invention may be comprised by having a waveform structure other than the said waveform structure like FIG.

In the wave-shaped strip material 1 of the present invention, the size of the crest height h and one cycle length? May be set as desired.

For example, the wave height h may be set to 1.0 mm to 2.5 mm, and one cycle length (wave pitch) lambda is set to 2 mm to 10 mm. Furthermore, the conventional wound type metal honeycomb structural body H '(see FIGS. 16 to 17), for example, 90 mm in diameter, 1.4 mm in height, and 3.2 in pitch width (300 cpsi) This is known.

In the metal honeycomb structural body H of the present invention, since it has the above-described special waveform structure, the contact loss is reduced based on the contact between the two band members 1 and 2 due to the waveform structure. It is possible to significantly reduce the conventional size. This results in the improvement of the effective surface area ratio for supporting the catalyst for exhaust gas purification and the reduction in the amount of use of the expensive band members 1 and 2. For example, the amount of material used can be reduced by about 20% or more.

Moreover, since the contact part of both strip materials 1 and 2 can be reduced as a side effect, the usage-amount of the expensive high temperature soldering material used for fixing the contact part of both strip materials 1 and 2 can also be reduced.

In addition, as shown in Fig. 2, the metal honeycomb structural body H of the present invention is due to the corrugated structure of the wave-shaped strip member 1 of the first embodiment, and thus, the exhaust gas venting passage (cell) ( 3) can be set larger than the conventional cell 3 '(see Fig. 17).

For this reason, the metal honeycomb structural body H of the present invention can significantly reduce the back pressure resistance (ventilation resistance), which greatly affects the efficiency of the internal combustion engine, without lowering the exhaust gas purification ability. For example, the back pressure resistance (ventilation resistance) can be reduced by about 15% or more.

In addition, the metal honeycomb structural body H of the present invention is a non-contact region in which large thermal stresses generated inside the metal honeycomb structural body H do not contact the flat plate-like strip material 2 of the wave-shaped strip material 1. In 1b), it can absorb and alleviate effectively. Therefore, the metal honeycomb structural body H of the present invention is excellent in durability.

In the metal honeycomb structural body H of the present invention, the wave-like strip material 1 of the first embodiment having the above-mentioned special corrugated structure is, for example, conventionally applied to the use of this kind of metal honeycomb structural body. What is necessary is just to comprise the thin metal plate of heat resistant steel, such as a wave-shaped strip material 1 'or a flat strip material 2'.

The wave plate-like strip material 1 of the present invention may be produced by forming a flat plate-like strip material 2 into a wave shape. As this type of plate-shaped strip material 2, a metal honeycomb of a conventional metal monolith type is used. A band material used when fabricating a mold structure, for example, chromium steel (13% to 25% chromium), heat resistant stainless steel such as Fe-Cr 20% -Al 5%, or a rare earth metal (for improving high temperature oxidation resistance). A band member having a thickness of about 20 μm to 100 μm is used, such as heat resistant stainless steel to which REM) such as Ce or Y is added.

In particular, as the flat strip material 2, one containing Al or an Al layer provided on the surface thereof is subjected to heat treatment, and whisker or mushroom-shaped alumina (Al 2 O 3) is deposited on the surface thereof. Do. The alumina layers such as whiskers are preferable because they can firmly hold a washcoat layer for supporting catalysts for exhaust gas purification such as Pt, Pd, and Rh.

In the metal honeycomb structural body H of the present invention, the wave-shaped strip member 1 which is an essential constituent member is not limited to the above-described one, and various modifications are possible.

Hereinafter, another embodiment of the wave-shaped strip member 1 and the manufacturing method of the wave-shaped strip member 1 having a special corrugated structure applied to the metal honeycomb structural body H of the present invention will be described.

3-4 is a figure explaining the wave-shaped strip material 1 of 2nd Embodiment applied to the metal honeycomb structural body H of this invention.

Furthermore, FIGS. 3 to 4 are views corresponding to FIGS. 1 to 2 relating to the wave-shaped strip material 1 of the first embodiment applied to the metal honeycomb structural body H of the present invention.

The wave-like strip material 1 of 2nd Embodiment shown to FIG. 3 thru | or 4 has the length (width along the wave direction traveling direction) of the flat wavefront whose height formed in the non-contact area 1b is 1/2 * h. It is set to the length of one wavelength lambda 'of the virtual wave plate 1'. Moreover, in the wave-shaped strip | belt-shaped material 1 of 1st Embodiment shown to the said FIG. 1-2, the length of the wave front is half wavelength (1/2 * (lambda)) length.

In the wave-like band member 1 of the second embodiment shown in Figs. 3 to 4, the complementary region for completing the shape of the region 1c, that is, the waveform of one cycle length (one unit length) lambda, is obtained. The shape 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 1b.

The metal honeycomb structural body H of the present invention manufactured by employing the wave plate-like band member 1 of the second embodiment shown in Figs. 3 to 4 is described below with respect to the conventional metal honeycomb structural body H '. As shown in FIG.

Moreover, the structure of the metal honeycomb structural body H of the present invention and the conventional metal honeycomb structural body H 'is as follows.

(Iii). Metal honeycomb structural body (H) of the present invention

Thickness of wave-like strip material 1 and flat plate-shaped strip material 2: 50 μm

Digging: 1.8 mm

1 cycle length (λ): 4.0 mm

Cells: 180 (cells / in2)

Surface area after catalyst loading: 2.7 (m2 / liter)

(Ii). Conventional Metal Honeycomb Structure H '

Thickness of wave-like strip material 1 'and flat strip material 2': 50 mu m

Digging: 1.2 mm

1 cycle length (λ '): 2.5 mm

Cell count: 400 (cell / in2)

Surface area after catalyst loading: 2.7 (m2 / liter)

The metal honeycomb structural body H of the present invention has the following advantages over the conventional metal honeycomb structural body H '.

(a). The usage-amount of the strip | belt material 1 and 2 can be reduced by 25%.

(b). The ventilation resistance can be reduced by 15 to 20%.

(c). The high density can be reduced from the conventional 770 (g / liter) to 570 (g / liter).

FIG. 5 is a diagram illustrating the wave-like strip material 1 of the third embodiment applied to the metal honeycomb structural body H of the present invention, and corresponding to FIG. 1.

In the wave-shaped strip material 1 of the third embodiment shown in Fig. 5, the shape of the complementary region for completing the waveform of the region 1c, i.e., one cycle length (one unit length) lambda, is the first. It differs greatly from the embodiment-2nd embodiment (refer FIG. 1 and FIG. 3). That is, the shape of the complementary area | region 1c of the wave-shaped strip material 1 of 3rd Embodiment is comprised with the shape of having the non-contact area 1b.

FIG. 6 is a diagram for explaining the wave plate-like band member 1 of the fourth embodiment applied to the metal honeycomb structural body H of the present invention, and corresponding to FIG.

FIG. 7: is a figure explaining the wave-shaped strip material 1 of 5th Embodiment applied to the metal honeycomb structural body H of this invention, and is a figure corresponding to said FIG.

As shown in Fig. 1 to Fig. 7, the waveform structure of the wave-shaped band member 1 applied to the metal honeycomb structural body H of the present invention is at least the waveform (triangle waveform) of the virtual wave plate 1 '. The area | region 1a which one set of adjacent peak part and the valley part contact | connect the plate-shaped band material 2, and the area | region 1b which is non-contact with the plate-shaped band material 2 which contacted the said contact area 1a is included. Region 1b + 1c 'is satisfied.

The above conditions will be described with reference to FIGS. 1 to 7 as follows.

1, 5, and 7 show a form in which one set of adjacent peaks and canyons of the triangular waveform contact the flat band member 2 under the above conditions.

6 shows the form in which two sets of adjacent peaks and gorges of triangular waveforms come into contact with the flat band member 2 under the above conditions.

Next, the conditions 1b + 1c including the non-contact area 1b among the above conditions will be described with reference to FIGS.

In the wave-like band member 1 applied to the metal honeycomb structural body H of the present invention, the waveform structure for one cycle length (one unit length) (λ) is applied to the regions 1a and 1b as described above. In addition, it has a region (complementary region) for forming a waveform structure of one cycle length?, That is, a complementary region 1c connected to the region 1b.

That is, the waveform structure for one cycle length (lambda) of the wave-shaped strip | belt-shaped material 1 of this invention consists of said area | regions 1a, 1b, 1c.

Thus, the complementary region 1c may consist only of a portion in contact with the flat strip material 2 (see FIGS. 1, 3 and 6), or a portion of the complementary area 1 in contact with the flat strip material 2 and the flat strip material. It has a site | part which does not contact (2) (refer FIG. 5, FIG. 7).

In the corrugated structure of the region 1c, the region not in contact with the flat band member 2 is half (1/2 · h) of the height of the virtual wave plate 1 ', furthermore, the flat band member 2 It has a wavefront substantially parallel to the wave, and furthermore, the magnitude of the wavefront (width in the traveling direction of the wave form) may be half wavelength of the wavelength lambda 'of the virtual wave plate 1', or half wave length (1/2 · λ). It may be an integer multiple of 2 or more.

In the corrugated structure of the region 1c, the number of excretion of the portion in contact with the flat strip member 2 and the portion not in contact with the flat strip member 2 may be desired.

8-9 is a figure explaining the wave-shaped strip material 1 of 6th Embodiment applied to the metal honeycomb structural body H of this invention.

Moreover, FIG. 8 is a diagram corresponding to FIG. 9 is a front view in which a part of the wound type metal honeycomb structural body H manufactured by using the wave plate-like strip material 1 and the plate-shaped strip material 2 of the sixth embodiment shown in FIG. 8 is omitted. In particular, it is a view for explaining the structure of the central portion (winding center portion) region and the outer peripheral portion region of the metal honeycomb structural body (H).

As shown in FIG. 8, the wave-shaped strip material 1 of 6th Embodiment is

(Iii). While the crest of the third embodiment uses the wave-like band member 1 (see Fig. 3) of (h),

(Ii). The same wave height h is formed at one end thereof, and a triangular waveform area A having a length of (λ ") is provided.

The wave-like strip material 1 of 6th Embodiment which has the above-mentioned corrugated structure is important in manufacturing the winding type metal honeycomb structure H. FIG. That is, the wave plate-shaped strip member 1 of the sixth embodiment is wound and wound together with the plate-shaped strip member 2 which is another constituent member so that the triangular waveform region A is disposed at the winding center and its vicinity. Type metal honeycomb structured body (H).

When manufacturing the wound-type metal honeycomb structural body H, when the wave-like strip material 1 which does not have the said triangular waveform area A is used, the wave-shaped strip material 1 is a flat strip material 2 Since the ratio of contact to, i.e., the number of contact portions per unit volume is smaller than that in the case of using the conventional wave-shaped strip material 1 ', the wavy portion tends to deform due to the processing stress during winding forming. In particular, since a large processing stress is applied to the center of the winding forming and its vicinity, the wave-like strip material 1 of the sixth embodiment is important in producing the winding type metal honeycomb structural body H.

Fig. 9 shows that a triangular waveform portion A is arranged at the winding center portion and its vicinity, and a uniform triangular cell structure is obtained at the portion thereof, and furthermore, the wave-like band member 1 of the third embodiment at the other portion. It shows that it can enjoy the advantage of (refer FIG. 3).

In the present invention, the size of the region A of the triangular waveform, that is, the length 1A of the region A of the triangular waveform shown in Fig. 8 may be set as desired. For example, in the case of the metal honeycomb structural body H having a diameter of 100 mm, the length 1A may be set such that the triangular waveform area A exists in a range of 5 mm to 15 mm in the radius of the winding.

Furthermore, in the present invention, the structure of the triangular waveform area A can be modified in various ways. For example, the waveform shape is not limited to a triangular waveform, and the modification height may be the same as that of the wave-shaped band member 1, or may be different.

FIG. 10 is a diagram for explaining the wave-like band member 1 of the seventh embodiment applied to the metal honeycomb structural body H of the present invention.

Furthermore, FIG. 10 shows a metal honeycomb structure H (see FIG. 20) of the S-shape manufactured by winding a stack composed of the wave-like strip material 1 and the flat strip material 2 of the seventh embodiment. Figure showing the area of the winding center.

This type of S-shaped metal honeycomb structural body (H) has a desired length and width and overlaps the desired number of straight strips (1, 2) in a desired number of stages to form a stack, and then up and down It is produced by installing a rod-shaped winding jig in a substantially middle portion of both outermost layers and winding the winding-molding jig in the same direction.

Therefore, at the time of winding shaping | molding, a large processing stress is applied to the substantially intermediate part of the wave-shaped strip | belt material 1. For this reason, in the wave-shaped strip | belt-shaped material 1 of 7th Embodiment, the area | region A of a triangular waveform is provided in the intermediate part.

As is apparent from the foregoing, in the wave-like strip material 1 (see Figs. 8 to 9) of the sixth embodiment and the wave-shaped strip material 1 (see Fig. 10) of the seventh embodiment, The installation part of the waveform area | region A differs. However, the wave-shaped strip material 1 of the seventh embodiment shown in FIG. 10 and the wave-shaped strip material 1 of the sixth embodiment shown in FIGS. 8 to 9 are basically the same structure.

As apparent from Fig. 10, when manufacturing the S-shaped metal honeycomb structure H, the processing stress is approximately the center of the stack, and furthermore, the stack is applied most strongly to the upper and lower outer layers and its neighboring layers. In the wave-shaped strip material 1 constituting the structure, a triangular wave-shaped region A may be provided in the wave-shaped strip material 1 positioned at the site (upper and lower outermost layer and its neighboring layer), or as shown. Similarly, a triangular waveform area A may be provided in the entire wave-like band member 1.

In the present invention, the waveplate-like band member 1 (see Figs. 8 and 10) of the sixth to seventh embodiments, that is, the waveplate having the triangular waveform region A in at least part of the region. The image strip material 1 may be manufactured by waveform forming one continuous flat plate material, and constitutes the triangular waveform area A as a separate member, which is described above by the desired fixing means. It may also be manufactured by adhering to the wave-like band member 1 having a special corrugated structure. Further, as the fixing means, any fixing means may be employed, such as welding, caulking, mechanical coupling, or temporary fixing.

In the present invention, when the winding type metal honeycomb structural body H shown in Fig. 9 is noticed by its manufacturing method, the wave-like strip member 1 (see Fig. 8) and the flat plate of the sixth embodiment described above are described. It is not limited to overlapping the upper strip | belt material 2 so that it may contact, and further, to wind up and manufacture it collectively. In addition to this, the center plate is first made of a wave plate-like strip material 1 'having a triangular waveform and a plate-shaped strip material 2, and thus the wave plate-shaped strip material 1 of the third embodiment having the above-described special wave structure of the present invention. ) (See Fig. 3) and the flat strip member 2 may be fixed to each counterpart, and subsequently wound-molded to produce a wound-type metal honeycomb structural body H.

Next, the manufacturing method of the wave-shaped strip material 1 which has the above-mentioned various special corrugated structure applied to manufacture of the metal honeycomb structural body H of this invention is demonstrated.

The wave-shaped band member 1 having the special corrugated structure applied to the metal honeycomb structural body H of the present invention is, for example, efficiently and more economically using a pair of upper and lower corrugating gears. It can manufacture.

FIG. 11 is a view for explaining a molding gear for manufacturing the wave-shaped strip material 1 (see FIG. 1) of the first embodiment applied to the metal honeycomb structural body H of the present invention.

The wave-shaped band member 1 having the wave structure of the first embodiment of the present invention shown in FIG. 1 is economical by a pair of upper and lower forming gears of the first gear G1 and the second gear G2 shown. It can manufacture efficiently and efficiently.

In addition, in the figure, the drive gear for driving the gear feed of 1st-2nd gear G1, G2 correctly is abbreviate | omitted. 11 and 14 to be described later, the toothed black portions of the first gear G1 and the second gear G2 are about 1 of the height of the sawtooth to form a half-height tooth. Indicates that / 2 is the part that has been removed.

In order to manufacture the wave-shaped strip | belt-shaped material 1 which has a wave structure of 1st Embodiment of this invention shown in the said FIG. 1, as shown in FIG. 11, a pair of upper and lower molding gears of the following structures are used. do.

(Iii). The 1st gear G1 is comprised by having the tooth | gear which the tooth | column which crossed one is removed similarly to the above,

(Ii) The second gear G2 is configured to have a toothed tooth having the entire toothed tooth as a full height toothed tooth.

Thus, the first gear G1 and the second gear G2 are arranged in the arrangement relationship shown.

Furthermore, in the present invention, the half-height tooth means that one half of the tooth shape is removed. In addition, the full-height tooth consists of the remainder which almost half was removed from the whole tooth, and the government part of the half-height tooth consists of a substantially flat thing.

FIG. 12 is a view for explaining a molding gear for manufacturing the wave-shaped strip material 1 (see FIG. 3) of the second embodiment applied to the metal honeycomb structural body H of the present invention.

In order to manufacture the wave-shaped strip | belt-shaped material 1 which has a wave structure of 2nd Embodiment of this invention shown in FIG. 3, as shown in FIG. 12, a pair of upper and lower molding gears of the following structures are used. .

(Iii). The 1st gear G1 is comprised by having the tooth | gear which the tooth | column which crossed one is removed similarly to the above,

(Ii). The tooth which crossed one 2nd gear G2 has a tooth removed similarly to the above.

Thus, the first gear G1 and the second gear G2 are arranged in the arrangement relationship shown.

FIG. 13 is a view for explaining a molding gear for manufacturing the wave-shaped strip material 1 (see FIG. 5) of the third embodiment applied to the metal honeycomb structural body H of the present invention.

In order to manufacture the wave-shaped strip | belt-shaped material 1 which has a wave structure of 3rd Embodiment of this invention shown in FIG. 5, a pair of upper and lower molding gears of the following structures are used, as shown in FIG. .

(Iii). The tooth which crossed two 1st gear G1 has the tooth removed similarly to the above,

(Ii). Similarly, the 2nd gear G2 is comprised by having the tooth | gear which two teeth crossed removed similarly to the above.

Thus, the first gear G1 and the second gear G2 are also arranged in the arrangement relationship shown.

FIG. 14 is a view for explaining a molding gear for manufacturing the wave-shaped band member 1 (see FIG. 6) of the fourth embodiment applied to the metal honeycomb structural body H of the present invention.

In order to manufacture the wave-shaped strip | belt-shaped material 1 which has a wave structure of 4th Embodiment of this invention shown in the said FIG. 6, as shown in FIG. do.

(Iii). The first gear G1 comprises two teeth having teeth that are removed as above.

(Ii). Similarly, the second gear G2 is configured such that the teeth of two teeth have teeth that are similarly removed.

Thus, the first gear G1 and the second gear G2 are arranged in the arrangement relationship shown.

The wave-shaped band member 1 having a special corrugated structure applied to the metal honeycomb structural body H of the present invention is as apparent from the description of the manufacturing method described with reference to Figs. (1 '), in other words, it is completely different from the waveform structure of the wave-shaped strip | belt-shaped material 1' of simple waveform structure, such as a conventional triangular waveform or a sine wave. In addition, the virtual wave plate 1 ', in other words, the conventional wave-shaped strip member 1' of a simple waveform structure, for example, the teeth of all of the upper and lower pair of forming gear (G1, G2) of FIG. It is manufactured by using the thing with the full height tooth.

As is evident from the foregoing, the waveform structure of the wave-shaped strip member 1 of the present invention is defined by referring to the simple wave structure of the virtual wave plate 1, in other words, the conventional wave-shaped strip member 1 '. The difference to the thing becomes clear.

Effects of the Invention

The metal honeycomb structural body (H), which is a main component of the metal carrier (MS) for purifying exhaust gas of the present invention, is manufactured by using a wavelet-like band member (1 ') and a plate-shaped band member (2') having a conventional simple waveform structure. The metal honeycomb structural body H 'is different from the other structure.

In particular, the metal honeycomb structural body H of the present invention is constituted by a wave plate-like band member 1 and a plate-shaped band member 2 having a special corrugated structure instead of the conventional simple corrugated structure as its constituent members. In particular, the wave structure of the wave-shaped band member 1 is (i). The waveform of the virtual wave plate 1 'formed by contacting the flat band member 2 with the peak portion and the gorge portion of each wave, and concatenating the waveform of one cycle length λ' having a desired wave height h. By using (ii) -1. The wave form of the said virtual wave plate 1 'connects with the area | region which contacts the plate-shaped strip material 2 in the peak part and the valley part of at least 1 set of adjacent waves, and the area | region which contacts the said plate-shaped strip material 2 One cycle length (λ) of a new waveform having a region including a non-contact region is formed in one flat strip material 2, and furthermore, (ii) -2. A non-contact region is formed in the flat strip material 2 so as to have a height of about half (about 1/2 · h) of the height h of the virtual wave plate 1 '(iii). The first wave length? Is formed by concatenating the waveform formed by using the waveform of the virtual wave plate 1 '.

The metal honeycomb structural body (H) of the present invention can have an excellent effect, which is not shown in the prior art, by the special corrugated structure of the wave-shaped band member (1) which is a constituent member of the metal honeycomb structural body (H). have.

The wave plate-like strip member 1 and the plate-shaped strip member 2 which are the constituent members of the metal honeycomb structural body H of the present invention are in contact with both strip members 1 and 2 due to the wavy structure of the wave plate-shaped strip member 1. On the basis of this, the contact loss can be significantly reduced than before. This is because the wave-like strip material 1 having a special corrugated structure of the present invention is configured to contact the plate-like strip material 2 less than the conventional wave-like strip material 1 '.

The drastic reduction in the contact loss described above is an increase in the effective surface area ratio of the expensive band members 1 and 2 for supporting the catalyst for exhaust gas purification.

Therefore, the reduction in contact loss between the two band members 1 and 2 leads to the reduction in the amount of use of the expensive band members 1 and 2 and the compactness and miniaturization of the metal honeycomb structural body H. Moreover, the significant savings of the expensive band members 1 and 2 contribute to the improvement of the startability of the metal honeycomb structural body H. This is because the heat capacity of the metal honeycomb structural body H decreases due to the significant saving of the band members 1 and 2, and the turbulence characteristic is improved, and the metal honeycomb structural body H is rapidly heated. The optimum catalytic reaction temperature can be reached in a short time.

Moreover, as a side effect of reducing the contact loss of the two strips 1 and 2, the amount of expensive high-temperature soldering materials used for fixing the contact portions of the two strips 1 and 2 can be saved.

Moreover, due to the special corrugated structure of the wave-shaped band member 1 of the present invention, the exhaust gas venting passage (cell) of the metal honeycomb structural body H can be set larger than the conventional one.

For this reason, the metal honeycomb structural body H of the present invention can be set to a significantly smaller back pressure resistance (ventilation resistance), which greatly affects the rate of the internal combustion engine, without lowering the exhaust gas purification ability.

That is, the metal honeycomb structural body H of the present invention can achieve high exhaust gas purification performance without lowering the efficiency of the internal combustion engine.

In the present invention, thermal stress and thermal strain generated inside the metal honeycomb structural body H are effectively absorbed and alleviated in the region where the wave-like band member 1 does not contact the flat band member 2. For this reason, the metal honeycomb structural body H of the present invention is excellent in durability.

In the metal honeycomb structured body for carrying the catalyst for purifying exhaust gas of the present invention, the wave-like band member as a constituent member has a new waveform structure which has not existed in the prior art. Therefore, due to the new wave structure of the wave-like strip material, the metal honeycomb structure of the present invention can significantly reduce the amount of expensive wave-shaped strip material and plate-shaped strip material, significantly reduce the expensive high temperature solder material, and breath resistance. It is excellent in various characteristics such as startability and startability.

Therefore, the metal honeycomb structured body using the wave-shaped strip material of the novel corrugated structure of the present invention is suitable for the exhaust gas purifying device MS.

Claims (13)

A metal honeycomb structural body for carrying a catalyst for purifying exhaust gases of a honeycomb structure produced by alternately contacting a thin plate-like strip material (1) and a plate-shaped strip material (2) made of thin metal sheet, (Iii). The waveform of the imaginary wave plate 1 'formed by contacting the flat band member 2 with the peak portion and the valley portion of each wave and concatenating the waveform of one cycle length λ' having a desired wave height h is obtained. using, (Ii) -1. The wave form of the said virtual wave plate 1 'is connected to the area | region which contacts the plate-shaped strip material 2 in the peak part and the valley part of at least 1 set of adjacent waves, and the area | region which contacts the said plate-shaped strip material 2. One period of length (λ) of a new waveform having an area including a non-contact area is formed in one flat strip material 2, (Ii) -2. A non-contact region is formed in the flat strip member 2 so as to have a height of approximately half (about 1/2 · h) of the crest height h of the virtual wave plate 1 ', (Iii). A metal honeycomb structured body comprising a concatenation of a waveform of one cycle length (λ) formed by using a waveform of the virtual wave plate (1 '). The non-contact area 1b of the wave-shaped strip material 1 with respect to the plate-shaped strip material 2 is approximately half (about 1/2 · h) of the crest height h of the virtual wave plate 1 '. A metal honeycomb structured body having a wavefront that is substantially parallel to the flat band member (2). 3. The size of the wavefront (width of the wave propagation direction) substantially parallel to the plate-like strip material 2 in the non-contact area 1b of the wave-shaped strip material 1 is approximately the size of the virtual wave plate 1 '. A metal honeycomb structured body having a size of half wavelength (about 1/2 · λ). 3. The wavefront of claim 2, wherein the size of the wavefront substantially parallel to the plate-like strip material 2 in the non-contact region 1b of the wave-like strip material 1 is half the wavelength of the virtual wave plate 1 '(about 1/2 · λ). Metal honeycomb structure, characterized in that the size of an integer multiple of two or more. 3. The wave-like band member 1 according to claim 2, wherein the wave-like band member 1 has a non-contact region 1b of about half wavelength (about 1/2 · λ ') of the virtual wave plate 1' per one cycle length (λ). A metal honeycomb structure, characterized in that. 3. The non-contact area 1b according to claim 2, wherein the wave-like band member 1 has an integer multiple of two or more times the half wavelength 1/2 'of the virtual wave plate 1' per one cycle length [lambda]. Metal honeycomb structure, characterized in that it has. 3. The wave-shaped strip material 1 according to claim 2, wherein the wave-like band member 1 is a half wave (about 1/2 · λ ') of the non-contact region 1b and the virtual wave plate of the virtual wave plate 1' per one cycle length (λ). A metal honeycomb structural body, characterized by sharing a noncontact region 1b of an integer multiple of two or more times the half wavelength (1/2 · λ ') of (1'). 2. The metal honeycomb structural body according to claim 1, wherein the wave shape of the region (1a) in contact with the plate-shaped band material (2) of the wave-shaped band material (1) is a desired shape. 9. The metal honeycomb structure according to claim 8, wherein the waveform shape is selected from approximately sinusoidal waveforms, triangular waveforms, omega waveforms, ladder waveforms, or rectangular waveforms. The cycle-length strip material according to claim 1, wherein the wave-like band member 1 has a desired wave height h over a desired width (width in the traveling direction of the waveform) at a desired site. A metal honeycomb structural body comprising a corrugated region A formed by connecting minute waveforms. 11. The method of claim 10, wherein the corrugated region A is one end of the wave-shaped strip member 1, and the wave-shaped strip member 1 and the plate-shaped strip member 2 are wound to form a wound type metal honeycomb structure. Metal honeycomb structure, characterized in that installed in the center area of the winding. 11. The waveguide region (A) according to claim 10, wherein the corrugated region (A) is a substantially central portion of the wavelet-shaped band member (1) having a desired width, and is substantially flat with the wavelet-shaped band member (1) and the wavelet-shaped band member (1). The metal honeycomb characterized in that the stack is formed by alternately overlapping the desired number of (2), and the roll is wound and formed in the winding center region when fabricating an S-shaped or vortex-type metal honeycomb structure. Type structure. 13. The metal honeycomb structural body according to claim 12, wherein at least a part of the wave-like band members (1) of the desired number of wave-like band members (1) is configured to have a corrugated region (A).