JP6546681B1 - Metal foil and laminate having the same - Google Patents

Abstract

An object of the present invention is to provide a metal foil having a new structure, and to provide a laminate having the metal foil and applicable to various applications. A metal foil (10) is provided with a corrugated structure (11) in which peaks (12) and valleys (13) periodically repeat. The corrugated structure 11 includes an opening 14 and a protrusion 15 protruding from the opening 14. The protruding portion 15 protrudes toward the inside of the corrugated structure portion 11. The peak portion 12 and the valley portion 13 extend in the vertical direction by alternately repeating a left inclined region 24 inclined obliquely to the left and a right inclined region 25 inclined obliquely to the right with respect to the vertical reference line. The metal foil 10 constitutes a laminate by being stacked in the thickness direction with a sheet body such as metal foils 10 or lath metal. [Selected figure] Figure 1

Description

The present invention relates to a metal foil and a laminate provided with the same.

Patent document 1 is a metal foil provided with at least one slit disposed in an inner region of the metal foil, wherein the at least one slit at least partially delimits a microstructure of the metal foil, the microstructure Wherein the microstructure protrudes from the surface structure of the metal foil, wherein the microstructure forms a corrugated area, the corrugated area having at least one wave crest and trough, the crest and trough A metal foil is disclosed in which at least one of the parts is formed so as not to be arranged linearly with respect to the longitudinal direction of the metal foil. More specifically, the microstructure is formed so as to protrude substantially in a U shape from the surface of the metal foil to the inside of the peaks and valleys by the slits, and both ends of the U are It is continuous with the surface structure.

Although this patent document 1 discloses that this metal foil is used as a carrier for supporting a catalyst, for example, the flow of the processing fluid in the direction in which the waveform extends is made by the peaks and valleys of the waveform and the microstructure. Although the flow of the process fluid in the transverse direction is intended, the passage of the process fluid in the thickness direction is not intended.

Moreover, although using this metal foil as a support | carrier for catalyst support is disclosed, this metal foil is only a thing which does not generate heat itself.
In addition, there is a problem that the corrugation shape is insufficient in brazing strength or the catalyst is locally accumulated.

Patent Document 2 forms through holes having yoke-like projections or burrs at the periphery in the wave-like or uneven peaks and valleys, and periodically changes the cross-sectional shape in the wave front direction into individual waves or unevenness. A metal sheet or metal foil having a metal foil or foil wound thereon in a coiled manner, and there is a porous electrically insulating film between the adjacent surfaces of the metal plate or metal foil wound in a spirally fashion, A metal filter for a diesel engine is disclosed in which heating electrodes are attached to both longitudinal ends of a plate or metal foil. In this metal filter, the cross-sectional area of the exhaust gas flow path can be increased along the flow direction of the exhaust gas by providing an undulation in which the cross-sectional shape is periodically changed in the wave front direction in each waveform or unevenness. It can be made smaller, and some kind of pressure swing adsorption action can be given to the exhaust gas, which can accelerate the settling of the particulates, further increasing the trapping efficiency of the particulates by protrusions or burrs. It can be improved.

However, since this yoke-like projection or burr is projected toward the outside of the peak portion and the valley portion, the yoke-like protrusions of the metal plates on the inner peripheral side and the outer peripheral side when wound tightly in a spiral shape Or burrs that interfere with one another or scratching another layer when laminated with another layer such as an insulating layer, or when it is desired to increase the contact area between peaks and valleys with another layer The burrs can not increase the contact area because of interference. Furthermore, since the projections or burrs are present outward, it is difficult to braze with other members, and it is difficult to implement as a laminate with other members.

Patent Document 3 discloses a catalyst body in which a clad steel plate of a base material of an iron-chromium-aluminum thin plate and an aluminum foil is used as a heating element, and the heating element is annealed to support a catalyst to form a catalyst layer. In addition to the above, it is disclosed that the heating element is formed by applying a corrugating process to a clad steel plate after a lath process and then an annealing process to form an alumina film. However, Patent Document 3 only shows that the heating element is subjected to lath processing or the like of the clad steel plate, and no disclosure is made about the characteristics such as the electric resistance value.

Further, Patent Documents 4 and 5 disclose that a catalyst body having a metal lath or the like as a carrier and a catalyst supported thereon is used for a deodorizing device, an exhaust gas purifying device, an air cleaner including a V O C removing device, etc. However, metallus is merely a catalyst carrier and does not generate heat by itself.

Patent Document 6 is proposed by the present applicant to solve the problems of Patent Documents 1 to 5, but the present applicant further improves this, and applies to a metal foil and a laminate provided with the same. It is an attempt to improve the flow of the processing fluid flowing.

Patent No. 5563946 gazette Patent No. 4236724 JP 2000-334299 A Unexamined-Japanese-Patent No. 2002-191986 JP 2007-236638 A JP, 2017-148705, A

In view of the above-mentioned circumstances, the present invention has an object to provide a metal foil having a new structure. Another object of the present invention is to provide a laminate having a metal foil with a new structure and being applicable to various applications.
Furthermore, the present invention makes it possible to promote contact between the metal foil and the laminate provided with the same and the entire treatment fluid when the treatment fluid is allowed to flow to the metal foil and the laminate provided with the metal foil. As an issue.

The present invention is generally disposed in a processing fluid flowing from the upstream to the downstream, and has a corrugated structure in which a plurality of ridges extending in the flow direction of the processing fluid and valleys extending in the flow direction are alternately arranged in the lateral direction. Provided is a metal foil provided with the following new structure.

In the metal foil of the present invention, the corrugated structure includes an opening which allows the process fluid to move in the lateral direction, and a protrusion which protrudes from the opening, and the peak and the valley are vertical reference The apparatus is characterized in that it has a left and right inclined structure extending in the longitudinal direction by alternately repeating a left inclined area inclined obliquely to the left with respect to a line and a right inclined area inclined obliquely to the right.

The wave-like structure portion can be implemented as including a peak portion of the peak portion, a bottom portion of the valley portion, and a slope portion connecting the peak portion and the bottom portion.

The openings may allow for lateral movement of the process fluid, thereby allowing the process fluid to move to the adjacent peaks and valleys. Furthermore, by providing the ridges and the valleys with the left and right sloped structure, it is possible to suppress the increase in pressure loss caused by the left and right sloped structure as well as to facilitate the movement of the processing fluid.

The projecting portion may be in the form of a band, and both ends of the band may be connected to the corrugated structure at both ends of the opening. By this, it is possible to apply a shear force to the processing fluid and to exert various actions such as leading the processing fluid to the opening.

It is also preferable that at least one of the opening and the protrusion is asymmetrical with respect to the center of the peak. For example, in the left and right, the opening area of the opening may be different, the shape of the opening or the projection may be different, or the position where the opening or the projection is provided may be provided. It can be implemented. In the left and right tilt structure, the left tilt region and the right tilt region are alternately repeated, so the left tilt region and the right tilt region are combined by a combination of the peak portion or the valley portion with left and right asymmetry. The agitation of the processing fluid is promoted by changing the flow of the processing fluid and promoting three-dimensional movement, etc., thereby achieving uniform processing by uniform contact of the entire processing fluid with the metal foil. Can.

The ridges and valleys can be implemented as having various specific mobile features.
In one example, the crest portion, the valley bottom portion, and the slope portion may be implemented as including flat surfaces. Moreover, the said protrusion can be implemented as what has a form which does not protrude above the said peak part, or downward from the said valley bottom part.

Further, the opening may be provided between a mountain bending portion between the peak portion and the slope portion and a valley bending portion between the valley bottom portion and the slope portion. . Moreover, the said protrusion can be implemented as that by which the both ends were connected with the said peak part and the said valley bottom part.

Further, the opening may be provided between a valley bending portion between the valley bottom portion and the slope portion and the slope portion on the opposite side across the peak portion, The projecting portion may be implemented as having its both ends connected to the valley bottom portion and the slope portion.

The said metal foil can be implemented as a laminated body piled up in multiple sheets thickness direction.
Moreover, it can implement also as a laminated body arrange | positioned by interposing a sheet | seat body between the said metal foil and the said metal foil.

Furthermore, the laminate may be wound in a spiral shape, and an axial direction of the spiral may be a coiled laminate in which the flow direction of the processing fluid is the flow direction.

The present invention has been able to provide a laminate that can be applied to various applications with a metal foil having a new structure.
The present invention also provides a new structure of a metal foil capable of promoting contact with the entire processing fluid when the processing fluid is flowed to the metal foil and the laminate including the metal foil, and a new structure of the laminate including the metal foil. It is something that could be provided.

(A) End view of metal foil according to the embodiment of the present invention, (B) perspective view of the same part, (C) end view of a laminate of the metal foil. (A) The perspective view of the metal foil, (B) The perspective view which made the angle of the metal foil different. (C) End view of another laminate of the same metal foil, (B) End view of still another laminate of the same metal foil. (A) Explanatory drawing of the pitch and height of the metal foil, (B) Explanatory drawing of the angle of the metal foil. The end view of the metal foil which concerns on other embodiment of this invention, (B) The principal part perspective view, (C) The perspective view of the metal foil, (D) The perspective view which made the angle of the metal foil different. (A) An explanatory view of plane view of the metal foil, (B) An explanatory view of same front view. (A) The perspective view explaining the turbulent flow which arises by the metal foil which concerns on embodiment of this invention, (B) The perspective view seen from the other angle. The perspective view in the state where metal foils concerning another embodiment of the present invention were piled up, (B) the same part enlarged perspective view, (C) the perspective view seen from other angles, (D) the metal foil The end view of the piled state. The perspective view in the state where metal foils concerning another embodiment of the present invention were piled up, (B) the same part enlarged perspective view, (C) the perspective view seen from other angles, (D) the metal foil The end view of the piled state of. The perspective view in the state where metal foils concerning another embodiment of the present invention were piled up, (B) the same part enlarged perspective view, (C) the perspective view seen from other angles, (D) the metal foil The end view of the piled state of. The perspective view in the state where metal foils concerning another embodiment of the present invention were piled up, (B) the same part enlarged perspective view, (C) the perspective view seen from other angles, (D) the metal foil The end view of the piled state of. (A) The top view of the sheet | seat body which can be used with metal foil, (B) The top view which shows the other form of the sheet | seat body. (A)-(F) is a top view which shows the other form of the sheet | seat body, respectively. (A) The top view of the modification of the metal foil which concerns on embodiment of this invention, (B) The top view of another modification. (A) The perspective view for showing the structure of the coil structure comprised by the laminated body, (B) The perspective view for showing the flow direction of the process fluid with respect to the coil structure comprised by the laminated body.

Hereinafter, embodiments of the present invention will be described based on the drawings.
(About metal foil)
First, the metal foil 10 will be described with reference to FIGS. 1 to 3.

This metal foil 10 is provided with the waveform structure part 11 which the peak part 12 and the valley part 13 repeat periodically. The metal foil 10 is disposed in the processing fluid flowing from the upstream to the downstream as a whole, and the ridges 12 and the valleys 13 extend in the flow direction of the processing fluid as a whole, respectively. A waveform structure portion is configured by alternately arranging the plurality of portions 13 in the lateral direction.

Although the overall shape of the metal foil 10 is free, it can be embodied in various shapes, for example, in the form of a continuous web with a constant width, a rectangular shape, a circular shape, or the like.
The following description will be made on the premise of the web-like metal foil 10, but the present invention can be implemented in various forms as described above.

In the case of the web-like metal foil 10, the ridges 12 and the valleys 13 are alternately arranged in the longitudinal direction (lateral direction), and the extending direction of the ridges 12 and the valleys 13 corresponds to the width direction of the web However, these descriptions only show relative positional relationships, and do not specify absolute positions. In addition, the longitudinal direction of the web and the extending direction of the ridges 12 and the valleys 13 should not be fixedly understood, and the extending direction of the ridges 12 and the valleys 13 is the width direction of the web. It may be performed, or may be performed as inclined to the width direction and the longitudinal direction of the web.

The material of the metal foil 10 can be formed of various materials such as metal and synthetic resin, but in particular, it is made to have a self-heating property such as iron or an alloy thereof (for example, Fe-Cr-Al alloy having high specific resistance) In some cases, it is preferable to use a conductive metal, and when using it as a catalyst carrier, it is preferable to use a material that has good support in relation to the catalyst. The plate thickness is preferably implemented using a thin plate (foil) of about 0.02 to 0.1 mm, such as 0.05 mm, but can be changed depending on the application and the like.

(About waveform structure part)
The metal foil 10 includes a corrugated structure portion 11 in which peak portions 12 and valley portions 13 are alternately arranged. Although the waveform structure part 11 can be implemented as what was formed in the whole metal foil 10, you may implement as what was formed only in one part. When forming only in a part, for example, it may be provided in the central part of the metal foil 10, for example, a half part in the width direction, a peripheral part, or the like.

Although the ridges 12 and the valleys 13 can be implemented as symmetrical in the vertical direction, the ridges 12 and the valleys 13 may have different widths and heights.
In this embodiment, the peaks 12 and the valleys 13 have flat crests 16 and valleys 17, and the slopes 18 connect the crests 16 and the valleys 17 with each other. I am The contact area between the layers to be laminated, for example, when the metal foils 10 are stacked one on another or stacked on the sheet body 40 shown in FIG. Can exert effects such as increasing the In addition, the peak bending portion 20 between the peak portion 16 and the slope portion 18 and the valley bending portion 21 between the valley bottom portion 17 and the slope portion 18 may form a radius, or the peak portion 16 and the slope The portion 18 may not have a flat surface, but may have a curved or bent cross-sectional substantially triangular shape. The substantially trapezoidal cross section or the substantially triangular cross section should not be understood as being limited to the geometrical meaning.

(About the opening and the protrusion)
The metal foil 10 has an opening 14 and a protrusion 15 in the corrugated structure 11.
The openings 14 and the protrusions 15 can be formed by appropriate means, but can be formed by, for example, pressing the metal foil 10.

In this example, the opening 14 is formed in the sloped portion 18 between the mountain bending portion 20 and the valley bending portion 21. The upper end of the strip-like protrusion 15 is connected to the mountain bending portion 20 and the lower end is It is connected with the valley bent portion 21. Specifically, the protrusion 15 comprises a longitudinal portion 22 and a lateral portion 23. One end of the vertical portion 22 is connected to the mountain bending portion 20 and the other end is connected to one end of the horizontal portion 23. The other end of the lateral portion 23 is connected to the valley bending portion 21. Although it is preferable that the respective connected bent portions form a radius, it may be angular without forming a radius. Alternatively, the opening 14 may be formed only at the middle in the vertical direction of the slope portion 18 so that at least one end of the vertical portion 22 is connected to the slope portion 18. Furthermore, the opening 14 may be formed to reach the peak portion 16 so that one end of the vertical portion 22 is connected to the middle of the peak portion 16 in the left-right direction.

The longitudinal portion 22 has a component in the longitudinal direction (vertical direction in FIG. 1A) larger than the component in the lateral direction (horizontal direction in FIG. 1A), and it is preferable to make it slightly inclined. It does not matter even if it has no component and extends straight vertically. The inclination angle in the case of inclination is suitably set to be larger than the inclination angle of the slope portion 18.
As shown in FIG. 4A, the ratio of the pitch p of the ridges 12 (or the valleys 13) to the height h of the ridges 12 can be changed variously, for example, 1:10 to 10 : 1 can be implemented.
As shown to FIG. 4 (B), although the inclination angle with respect to the horizontal line of the slope part 18 can be changed variously, it can implement, for example as 45 to 85 degree. The inclination angle of the longitudinal portion 22 with respect to the horizontal line may be variously changed, for example, 70 to 190 degrees. An appropriate angle difference between the two is 0 to 120 degrees. In the flow direction, the width of the opening 14 and the protrusion 15 is suitably 3 mm to 25 mm, and the ratio of this width to the width of the slope portion 18 where these are not formed is 1 to 1 to 1 to 1 Although 20 is appropriate, these numerical values can be changed and implemented depending on the application of the metal foil 10, the type of processing fluid, the type of processing, and the like.

The horizontal part 23 is implemented as having a horizontal component larger than the vertical component and having no horizontal component and extending straight horizontally, but it may be slightly inclined. I do not care. It is appropriate that the inclination angle in the case of inclination be smaller than the inclination angle of the slope portion 18. When the lower end of the opening 14 is a slope portion 18 above the valley bending portion 21, the end of the lateral portion 23 is connected to the slope portion 18, but the lateral portion 23 extends obliquely downward from the end Will be connected to the vertical portion 22. In any case, forming a laminate as described later is to be accommodated between the peak portion 16 and the valley bottom portion 17 in the vertical direction without protruding outside in the vertical direction from the peak top portion 16 and the valley bottom portion 17 It is advantageous above.

The opening 14 and the projection 15 are formed only on one slope portion 18 (the slope portion 18 on the right side of FIG. 1A) among the two slope portions 18 sandwiching the crest portion 16. It may be formed on the other slope portion 18 (the slope portion 18 on the right side of FIG. 1A).

(About the opening and the protrusion according to another embodiment)
FIG. 5 shows an example in which the opening 14 is provided in a larger range than the above example, and in this example, the valley bending portion 21 on the right side of the figure and the opposite side across the peak portion 16 (FIG. Between the sloped portion 18 on the left side of A), an opening 14 is provided. Accordingly, one end of the protrusion 15 is connected to the valley bent portion 21 and the other end is connected to the middle of the opposite slope portion 18.
More specifically, the projection 15 is provided with horizontal portions 23 on both upper and lower sides of the vertical portion 22, the lower vertical portion 22 is connected to the valley bending portion 21, and the upper vertical portion 22 is sloped portion It is connected to the middle of the 18th, and is generally S-shaped as a whole. More specifically, the lower longitudinal portion 22 extends obliquely downward from the upper portion of the valley bending portion 21, and the upper longitudinal portion 22 extends obliquely downward from the middle of the slope portion 18, but the upper longitudinal portion It is also possible not to provide 22 and the form can be implemented with various modifications.

Although not shown, the opening 14 and the projection 15 may be formed between the middle portions of the slope portions 18 on the left and right sides. For example, the projection 15 may be formed in the middle of the vertical portion 22. It may be divided into two.
In any of the above examples, the width of the opening 14 and the protrusion 15 (the width in the flow direction in which the peak 12 and the valley 13 extend) is constant, and the opening 14 and the protrusion 15 in plan view Is not rectangular, but may be changed in various ways, such as a trapezoidal shape, a rhombic shape or an elliptical shape, in plan view.

The protrusion 15 does not protrude upward beyond the crest portion 16, and the protrusion 15 does not protrude downward below the valley portion 17. Thereby, as shown in FIG. 1 (C) and FIG. 3, the contact area with the sheet body 40 in the case of laminating is increased or brazed by the synergetic effect of the above-mentioned substantially flat crest portion 16 and valley portion 17 Defects can be suppressed. Moreover, the effect of not damaging the material of the other party in contact can also be exhibited.

(Plane shape of corrugated structure)
Although this metal foil 10 can be disposed and used in the processing fluid flowing from the upstream to the downstream as a whole, the peaks 12 and the valleys 13 are vertical reference lines 27 parallel to the flow direction of the processing fluid as a whole. On the other hand, it is meandering alternately to the left and the right and extends longitudinally as a whole (see FIG. 6A). In other words, the ridges 12 and the valleys 13 have a planar shape (hereinafter, also referred to as a herringbone structure) in which the left inclined region 24 and the right inclined region 25 are alternately repeated with the bending region 26 interposed therebetween. In addition, it may be implemented as including at least a part of the bending region 26 and a region extending in parallel with the vertical reference line 27 in the middle of the left inclined region 24 and the right inclined region 25 or extending linearly For example, it may be implemented as a curve extending in a sine curve or the like. The angle between the left inclined area 24 and the right inclined area 25 is preferably about 135 to 175 degrees, and more preferably about 150 to 170 degrees. Also, for one peak portion 12 or valley portion 13, it may reach a line segment (two-dot chain line in FIG. 6A) connecting the bending region 26a of one skip and the bending region 26a or may be deeper than that It is preferable that the bending area | region 26b of the adjacent peak part 12 or valley part 13 has entrapped in (right side rather than the dashed-two dotted line of FIG. 6 (A)).
As the above-mentioned angle is larger, the straightness is lower and the pressure loss of the processing fluid is larger. Conversely, as the above angle is smaller, the straightness is higher and the pressure loss of the processing fluid tends to be smaller. Shows a tendency to decline. Therefore, in order to promote the stirring of the processing fluid and cause the processing fluid to contact uniformly and favorably with the metal foil 10 to promote the heating of the processing fluid and the promotion of the catalyst support, it is preferable that the above angle is large. The larger the pressure drop, the greater the pressure drop and the better the overall efficiency of the treatment of the treatment fluid, the less favorable results.

In the present invention, since the opening 14 for allowing the process fluid to move in the lateral direction and the projection 15 that protrudes from the opening 14 are provided, it is possible to suppress an increase in pressure loss and to stir the processing fluid. It can prompt you.
In this embodiment, as shown in FIGS. 1 to 3, among the left and right slope portions 18 sandwiching the crest portion 16, the right slope portion 18 is provided with the opening 14 and the protrusion 15. The left slope portion 18 is not provided with the opening 14 and the protrusion 15. Further, in the example of FIG. 5, of the left and right slope portions 18 sandwiching the crest portion 16, the right slope portion 18 has an opening 14 and a protrusion 15 having a larger area than the left slope portion 18. It is provided.
The opening 14 and the projection 15 may be provided on either the left or right slope portion 18 or may be provided on both slopes.

(Flow of processing fluid)
By adopting the herringbone structure, it is considered that the fluid passing therethrough causes the vortex flow as shown by the turning arrow in FIG. 7B and flows in a turbulent state. In addition to this, in the present invention, the provision of the opening 14 and the protrusion 15 causes turbulent flow as shown by the small arrows in FIG. Cause turbulent flow and promote heat exchange and catalytic reaction.
Furthermore, when only the herringbone structure is provided, the fluid beyond the bending area 26 may be stagnated downstream of the bending area 26. Taking the case where the direction of the flow path changes from the left transition region 24 to the right transition region 25 via the bending region 26, for example, in the transition from the bending region 26 to the right transition region 25, the flow velocity on the right is higher than the flow velocity on the left Too late and there is a risk of stagnation. Therefore, the opening 14 and the projection 15 are provided in the right slope 18 where there is a possibility that stagnation may occur. This can reduce the possibility of stagnation due to the inflow of fluid from the single right channel.

As shown in FIG. 6, the processing fluid in the valley space 29 in the left inclined region 24 is introduced from the downstream to the upstream along the vertical reference line 27 so that the corrugated structure 11 is introduced. You will be guided to At this time, the opening 14 and the projection 15 are not provided in the left slope portion 18 and the whole is inclined to the left, so that the processing fluid can easily flow along the slope portion 18. On the other hand, since the opening 14 and the protrusion 15 are provided in the right slope portion 18, a part of the processing fluid divided by the protrusion 15 flows into the valley space 29 next to the right from the opening 14. In the adjacent valley space 29, the processing fluid tends to flow into the mountain space 28 from the openings 14 and the protrusions 15 provided in the slope portion 18 on the left side of the valley bottom 17, but the valley space 29 inclines to the left as a whole Since the projection 15 does not project into the valley space 29, the inflow from the valley space 29 to the mountain space 28 is smaller than the inflow from the mountain space 28 to the valley space 29 described above. .
Next, in the valley space 29, the direction changes from the bending area 26 to the right slope area 25 so as to incline to the right as a whole, so the inflow from the valley space 29 to the mountain space 28 increases and the left side of the mountain space 28 In the slope portion 18 of the second embodiment, the opening 14 and the projection 15 are not provided, so the pressure of the flow of the processing fluid along the left slope portion 18 is increased.
Along with this increase, as shown in FIG. 6 (B), in the process fluid along the slope portion 18 on the left side, a downward flow occurs, thereby causing a flow of the process fluid stacked below, Three-dimensional movement and agitation of the treatment fluid is facilitated, such as movement of the treatment fluid across the upper and lower layers.
As described above, when the processing fluid flows in the flow path in which the waveform structure portions 11 are stacked, the processing fluid moves in the vertical direction as well as in the lateral direction while suppressing the pressure loss, thereby promoting the processing. It can promote that the contact of the waveform structure part 11 of the whole fluid is performed uniformly.

When laminating | stacking multiple sheets of metal foil 10 provided with the waveform structure part 11, it can implement in various forms. FIG. 8 shows a form similar to FIG. 2, but shifted 1.5 mm (about 17% of the length of each of the left transition area 24 and the right transition area 25) in the horizontal direction of the figure. FIG. 9 shows the form of the phase difference, which is 1.5 mm in the horizontal direction of the figure (about 17% of the length of each of the left transition region 24 and the right transition region 25), the above-mentioned vertical reference line 27. They are shifted by 3.5 mm (about 32% of the length of each of the left transition region 24 and the right transition region 25) in the direction along (vertical direction in the figure). FIG. 10 shows a form in which the front and back are reversed. Further, as shown in FIG. 11, the number of the projecting portions 15 can be changed or increased or decreased. Assuming that the length of each of the left transition area 24 and the right transition area 25 is 11 mm, the number of the protrusions 15 is suitably about 1 to 6 and about 2 to 4 for one transition area. More preferable.

(About the sheet body)
As the sheet body 40, ones having various forms and functions can be used, but for example, a metal lath 41 can also be adopted. This metal lath 41 is provided with a large number of through holes 42 arranged in a staggered arrangement as shown in FIG. 12, and is manufactured by forming the through holes 42 by lath processing such as pressing of a metal plate. obtain. Although the shape of the through hole 42 is generally a rhombus or the like, it may be a rectangular shape such as a rectangular shape, and may be appropriately changed. The portions not removed by the through holes 42 constitute the mesh portion 43, and the mesh portion 43 can also carry a catalyst capable of purifying exhaust gas and the like. In addition, after forming the through holes 42 by lath processing of a metal plate, the thickness of the mesh portion 43 is reduced by rolling and the width in plan view is increased (see FIG. 12B). Thus, when the metal lath 41 is provided with an electrode or the like to be energized and used as a heating element, the electric resistance value of the through hole 42 changes and the surface area changes, so that the heat generation performance of the sheet 40 and the heater can be obtained. The performance can be changed, and as shown in FIG. 13, the size and shape of the through hole 42 and the thickness and size of the mesh portion 43 may be variously changed depending on the degree of rolling. it can.

The material of the metal lath 41 can be the same as that of the metal foil 10 described above, or a highly heat-resistant nichrome alloy or inconel alloy can also be used. The thickness is 0.01 to 0.1 mm, the opening ratio of the through holes 42 is 50 to 80%, and specifically, the plane area can be about 0.5 to 0.8 square cm. Moreover, although it is appropriate for the width | variety of the mesh part 43 to be 0.1-0.5 mm, these values can be changed suitably and can be implemented.

(Application example 1 of metal foil)
Utilization as a single layer of metal foil 10 and a laminate of single layers The use as a single layer of metal foil 10 indicates the use as a carrier for supporting a catalyst and the use as a heating element by carrying out with a metal having high electric resistance. be able to. Moreover, as shown in FIG.1 (C) and FIG. 2, utilization as a laminated body which laminated | stacked metal foil 10 single-piece | units directly can be shown.

In any case, the flow of the processing fluid around the metal foil 10 (the thickness direction of the metal foil 10 and the longitudinal direction of the corrugated structure 11) is well maintained, and the contact of the processing fluid with the metal foil 10 is increased. However, the above-described structure of the metal foil 10 presents a structure suitable for this. In particular, in the corrugated structure, the increase in pressure loss is suppressed by the ridge 12 and the valley 13 including the opening 14 and the protrusion 15 extending in the longitudinal direction as a whole including the left and right inclined regions 24 and 25. However, by promoting movement and agitation of the three-dimensional processing fluid, the flow of the processing fluid can be improved, the contact time of the entire processing fluid, and the contact area can be increased.

(Application example 2 of metal foil)
Utilization as a laminate 30 in which the metal foil 10 and the sheet 40 are combined The metal foil 10 and the sheet 40 are used in a state where they are not bonded to each other (including both in a state in which both are not in contact) It can also be used in the state which joined metal foil 10 and sheet body 40. A structure in which the metal foil 10 and the sheet 40 are stacked in the thickness direction is referred to as a laminate 30. In any case, the sheet 40 is disposed above or below the metal foil 10 in any case. It is possible to take the form which is made and the form which is made to arrange to both sides.

(Form where metal foil and sheet body are not joined)
As a form in which the metal foil 10 and the sheet body 40 are not joined, the metal foil 10 and the sheet body 40 are brought into contact (especially, surface contact when the substantially flat peak portion 16 or the valley bottom portion 17 is provided). It is preferable to be in a stationary state, but it may not be in contact (in particular, in the case of including a substantially flat peak portion 16 or a valley portion 17, surface contact). However, when it carries out in the state which made it contact, the above-mentioned protrusion part 15 can exhibit the effect which protrudes inwards effectively.

(Form where metal foil and sheet body are joined)
The form in which the metal foil 10 and the sheet body 40 are joined is to integrate the both by joining means, and constitute one non-separable sheet structure. The bonding means may be any one as long as the two are integrated, but brazing and welding can be shown as preferable examples. In the case of implementing these joining means, the metal foil 10 and the sheet member 40 need to be a metal or the like that can be brazed or welded, and in that case, as described above, the projecting portion 15 has the corrugated structure 11 Of the metal foil 10 and the sheet member 40 can be brought into surface contact, because the peak portion 16 and the valley bottom portion 17 are substantially flat, and the brazing and welding can be performed. Can be suppressed. As other joining means, joining with a fastening body such as a screw or a rivet, adhesion with an adhesive or the like, fixation with various tapes, etc. can be exemplified, and various joining means can be used in combination.

In addition, when joining metal foil 10 and sheet body 40, it can also be carried out so that brazing etc. may be formed only in the one part. At that time, as shown in FIG. 14 (A), when brazing both side edges in the width direction of the web-like metal foil 10 to the sheet member 40, the opening portion 14 or the protrusion is formed in the brazing portion 33. By not forming the portion 15, the brazing area can be further increased. In addition, the area | region which does not form this opening part 14 and the protrusion part 15 can be variously changed, such as providing in the center of the width direction of web-like metal foil 10, and can be implemented (refer FIG. 14 (B)).

As described later, when the metal foil 10 and the sheet member 40 are stacked and wound in a coil shape, it can be wound in a state in which both are joined in advance, but a state in which the two are not joined in advance After the completion of winding, a brazing agent may be placed on the end face of the coil and brazed. Moreover, when joining the same person after completion of winding, it is also possible to stop only by joining the two at the end of winding and joining only to the inner circumference.

(Function and effect of laminated body 30)
In addition to the advantages of the metal foil 10 alone described above, the laminate 30 can exert a synergetic effect with the sheet 40 regardless of the presence or absence of the above-described bonding.
In the relationship between the stack 30 and the processing fluid therearound, the space is further limited by the presence of the sheet body 40 in addition to the crest portion 16 or the valley portion 17 and the slope portion 18. At that time, if the sheet body 40 is implemented as not permitting or restricting the passage of the treatment fluid, the movement of the treatment fluid between the stacks 30 can be restricted. On the other hand, when the through holes 42 are provided, movement of the processing fluid between the stacks 30 can be permitted. At that time, the movement of the processing fluid between the stacks 30 can be sufficiently secured by the presence of the space by the projection 15 and the opening 14. In particular, it is preferable to provide the through holes 42 when it is necessary to move the process fluid between the stacks 30 or when it is advantageous that the process fluid move between the stacks 30.

(Specific usage 1)
The example of the specific utilization form in the case of using as a laminated body of metal foil 10 single-piece | unit or metal foil 10 single-pieces is shown.
First, the metal foil 10 can be used as a metal carrier for purifying air polluted by automobile exhaust gas, PM discharged from a factory or the like. In this case, as a catalyst component, for example, a platinum group catalyst such as platinum (Pt) or palladium (Pd) or titanium oxide as a main component, and an activity such as vanadium (V), molybdenum (Mo) or tungsten (W) What added the component can be used, and if necessary, a heat resistant oxide layer such as alumina (Al ₂ O ₃ ) can be formed on the surface of the metal lath 41 to support the catalyst.

In addition, as the metal foil 10, a material for a heater or the like used in an air purification device or the like can be applied as a single body thereof. In that case, it can implement by comprising the metal foil 10 with the raw material which has self-heating property, such as Fe-Cr-Al alloy with high specific resistance. And the electrode for electricity_supply can be provided in the suitable location of the metal foil 10, and can be implemented.

Further, the metal foil 10 may be made of a self-heating material, and the catalyst may be supported on the surface as described above. Thereby, the self-heating property of the metal foil 10 can heat the catalyst on the surface as well as the surrounding processing fluid.
In any case, the above-described structural features of the metal foil 10 do not damage or damage other materials used with the metal foil 10, and the air flowing around the metal foil 10 Disorders can be generated in the processing fluid such as the other gas to effectively exhibit the catalytic effect and the heating effect. In use, the metal foil 10 can be used as a flat plate, or flat metal foils can be stacked to form a laminate, or one or a plurality of metal foils 10 can be spirally wound. It can also be used as a coiled laminate.

The two metal foils 10 may be stacked by separately forming the metal foil 10 on which the catalyst is supported and the metal foil 10 having the heat generating function.
Further, the metal foil 10 can be used in a flat plate shape, or can be wound in a spiral as in the following case.

(Specific usage 2)
An example of a specific usage form in the case of using as the laminated body 30 which accumulated the metal foil 10 and the sheet | seat body 40 in the thickness direction is shown.
The laminated body 30 can be utilized as a flat sheet structure, but as shown in FIG. 15, it can be implemented as a coil structure 31 wound in a spiral shape.

As a specific application example, the example applied to a metal carrier can be shown. At this time, the catalyst is supported on the metal foil 10 as described above. In a state where the sheet body 40 is stacked on the metal foil 10, the sheet body 40 is spirally wound. It is also possible to use non-woven fabric, non-porous metal foil or the like as the sheet body 40, but by using the sheet body 40 of the metal lath 41 shown in FIG. 12 and FIG. Processing fluid can also flow across multiple layers, facilitating three-dimensional movement of the processing fluid.

The metal foil 10 and the sheet member 40 may not be joined, but may be joined. Since the crests 16 and valleys 17 of the metal foil 10 are substantially flat and the protrusions 15 project inward, the sheet 40 is not damaged, and brazing is performed when bonding is performed. It is possible to suppress defects in welding and welding.

The winding direction is such that one end side in the longitudinal direction of the web is the inner peripheral end and the other end side is the outer peripheral end, in other words, the extending direction of the ridges 12 and valleys 13 is the width direction of the web, the coil structure It may be wound so as to substantially coincide with the axial direction of 31. As a result, the processing fluid can flow from one end face to the other end face of the coil structure 31 in the axial direction (from the lower surface to the upper surface in FIG. 15B), and the flowed processing fluid flows from the one end face to the other end face. During the movement of the process fluid, the process fluid can also move in the circumferential direction of the stack 30, and the turbulentization of the processing fluid can be promoted. The coil structure 31 can also be implemented as having a coil-shaped structure in which the strip-shaped metal foil 10 folded in two along the width direction is wound. In this case, the crests 16 or valleys 17 of the metal foils 10 which are folded in half are in contact with each other, but another sheet body 40 is interposed between the metal foils 10 which are folded in half. It does not matter if it is done.

(Specific use form 3)
The other example of the specific utilization form in the case of using as the laminated body 30 which accumulated the metal foil 10 and the sheet | seat body 40 in the thickness direction is shown. Also in this example, as in the above-described specific application form 2, the coil structure 31 is formed by winding the laminated body 30 in which the metal foil 10 and the sheet body 40 are stacked in the thickness direction, and a specific application example As an example, the example applied to the heater which can be used for various uses is shown.

In this example, the metal foil 10 is used as a current-carrying member having a large electric resistance capable of generating heat, and the sheet 40 is used as an insulator, whereby the coil structure 31 is used when current is supplied from the electrode provided on the metal foil 10. Insulating between metal foils 10 overlapping in the radial direction of the above is intended. A relatively expensive alumina sheet can also be used as the sheet body 40, but a silica coat which can be provided at a lower cost or the above-mentioned metal lath 41 can be used. Do. As the insulation treatment, oxidation treatment and insulation coating can be exemplified. Also in this case, since the protrusion 15 protrudes inward, there is no risk of damaging or penetrating the sheet member 40 which is an insulator, so that the insulation failure can be effectively suppressed.

Further, by supporting the above-described catalyst on the metal foil 10 or the sheet body 40, a self-heating catalyst support can be provided.
Furthermore, it is also possible to implement the sheet body 40 as a carrier and the metal foil 10 as an insulator.

(Application to various devices)
The present invention can be applied to various devices, and, for example, with respect to those supporting porous bodies such as a catalyst and activated carbon, various gas purification devices such as an exhaust gas purification device, a PM removal device, and a deodorization device It can be applied to Moreover, about what functions as a heater, it is applicable to various heating apparatuses. More specifically, it can be applied as a heating unit or purification unit in the air purification device of JP-A-2015-223579 according to the application of the present applicant, and in the case of a self-heating catalyst carrier, both are used. It can also be implemented as a combined unit.

Moreover, as an application example as a heater, a superheated steam generator can be shown, and the laminated body 30 is adopted as an electric heating heater provided with an electrode, and steam is directly heated to generate superheated steam. Can be implemented as In this example, the steam can be directly overheated by passing the steam from one end face of the coil structure 31 to the other end face, and miniaturization can be achieved, and the heating efficiency can be improved. It is.
As described above, the present invention has been able to provide a metal foil that can be used for various applications and a laminate using the same.

DESCRIPTION OF SYMBOLS 10 Metal foil 11 Corrugated structure part 12 Peak part 13 Valley part 14 Opening part 15 Peak part 17 Peak part 17 Valley bottom part 18 Slope part 20 Mountain bending part 21 Valley bending part 22 Vertical part 23 Horizontal part 24 Left inclination area 25 Right inclination area 26 bending region 27 vertical reference line 28 mountain space 29 valley space 30 laminated body 31 coil structure 33 brazing portion 40 sheet body 41 metal lath 42 through hole 43 mesh portion

Claims (6)

A metal foil provided with a corrugated structure which is disposed in a processing fluid flowing from the upstream to the downstream as a whole, and a plurality of ridges extending in the flow direction of the processing fluid and valleys extending in the flow direction are alternately arranged laterally. In
The corrugated structure includes an opening that allows the process fluid to move laterally, and a protrusion that protrudes from the opening.
The peak portion and the valley portion extend in the vertical direction by alternately repeating a left inclined region inclined to the left with respect to a vertical reference line and a right inclined region inclined to the right .
The corrugated structure portion includes a peak portion of the peak portion, a bottom portion of the valley portion, and a slope portion connecting the peak portion and the bottom portion.
The opening and the projection are left and right asymmetrical across the center of the peak portion,
The opening and the protrusion are provided on at least one of the left and right slopes sandwiching the center of the peak, and the other at least the slope on the left and right sides of the center of the peak. Metal foil characterized by not providing the said opening part and the said protrusion part . The peak portion, the valley portion and the slope portion each include a flat surface,
The opening is provided between a valley bending portion between the valley bottom portion and the slope portion and the slope portion on the opposite side across the peak portion.
2. The metal according to claim 1, wherein the protrusion is connected at its both ends to the valley bottom portion and the slope portion and does not protrude upward from the peak portion or downward from the valley bottom portion. Foil. A metal foil provided with a corrugated structure which is disposed in a processing fluid flowing from the upstream to the downstream as a whole, and a plurality of ridges extending in the flow direction of the processing fluid and valleys extending in the flow direction are alternately arranged laterally. In
The corrugated structure includes an opening that allows the process fluid to move laterally, and a protrusion that protrudes from the opening.
The peak portion and the valley portion extend in the vertical direction by alternately repeating a left inclined region inclined to the left with respect to a vertical reference line and a right inclined region inclined to the right .
The corrugated structure portion includes a peak portion of the peak portion, a bottom portion of the valley portion, and a slope portion connecting the peak portion and the bottom portion.
The projecting portion has a band shape, and both ends of the band shape are connected to the corrugated structure at both ends of the opening,
The peak portion, the valley portion and the slope portion each include a flat surface,
The opening is provided between a valley bending portion between the valley bottom portion and the slope portion and the slope portion on the opposite side across the peak portion.
A metal foil characterized in that both ends of the protrusion are connected to the valley bottom portion and the slope portion, and do not protrude upward from the peak portion or downward from the valley bottom portion . A laminate comprising a plurality of metal foils according to any one of claims 1 to 3 stacked in the thickness direction. The sheet | seat body intervened and arrange | positioned between the said metal foil and the said metal foil, The laminated body of Claim 4 characterized by the above-mentioned. A coiled laminate characterized in that the laminate according to claim 4 or 5 is wound in a spiral, and the axial direction of the spiral is the flow direction of the processing fluid.