JP2016097392A - Composite component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite component which fixes and seals a honeycomb body.SOLUTION: A composite component includes: a honeycomb body having a pair of opening surfaces and a side wall; a casing enclosing the honeycomb body; and a joint part for joining the honeycomb body to the casing. The joint part includes: a flange part provided at a periphery of the side wall of the honeycomb body; an engagement part which is provided on an inner surface of the casing so as to face an opening surface side end surface of the flange part; and a brazing material layer sandwiched between the flange part and the engagement part.SELECTED DRAWING: Figure 7

Description

The present invention relates to a composite part.

Conventionally, a fixing method for housing a honeycomb body inside a container has been proposed (see, for example, Patent Document 1).
In the catalyst holding body (honeycomb body) of Patent Document 1, a mat made of inorganic fibers (crystalline alumina fibers) is wound around almost the entire side surface of a cylindrical honeycomb body, and an organic sheet is wound around the outer side. The catalyst holding body is accommodated by press-fitting inside the container. At this time, the bulk density before press-fitting the inorganic fiber mat and the bulk density after press-fit are limited to a predetermined range.

That is, the friction force generated between the honeycomb body and the mat by press-fitting into the metal pipe so that the bulk density after the press-fitting of the mat is larger than the bulk density before the press-fitting, and the mat The honeycomb body is fixed inside the metal pipe by a frictional force generated between the metal pipe.
This technique is widely known as a technique for fixing a filter (DPF) for purifying exhaust gas of a diesel engine in a metal pipe in addition to a catalyst holding body.

JP 2004-98059 A

However, in the prior art, it can be held and fixed inside the metal pipe in accordance with the shapes of the exhaust gas purification catalyst carrier and the exhaust gas purification filter, but two different parts such as a heat exchanger such as a heat exchanger are required. A gas or gas-liquid that flows next to each other cannot be used because there are voids communicating between the fibers.

In view of the above problems, an object of the present invention is to provide a composite part that can fix and seal a honeycomb body.

In order to achieve the above object, a composite component of the present invention includes a honeycomb body having a pair of opening surfaces and side walls, a casing surrounding the honeycomb body, and a joint portion for joining the honeycomb body and the casing. The joint portion is configured to face a flange portion provided around the side wall of the honeycomb body and an end surface of the flange portion on the opening surface side of the inner surface of the casing. And a brazing material layer sandwiched between the hook portion and the locking portion.

According to the composite part, the joint is provided with a flange provided around the side wall of the honeycomb body and an inner surface of the casing so as to face an end surface of the flange on the opening surface side. When the composite part having the above-described configuration is manufactured, the locking portion provided in the casing is half-finished. By applying pressure so as to press the brazing material layer in a molten state and joining, it is possible to prevent the brazing material from flowing out and to prevent generation of a gap due to the brazing material. Moreover, since it can join firmly by pressing and engaging a latching | locking part, the clearance gap by a joining failure, etc. are hard to generate | occur | produce between a latching | locking part and a collar part. As a result, the joining force between the flange and the locking part can be kept sufficiently high, and fluid flowing through the casing can be prevented from leaking from the joining part. Furthermore, when the fluid flows into and out of the opening surface of the honeycomb body, the fluid collides with the locking portion and the flange portion, but does not directly collide with the brazing material layer, so the reliability of the brazing material layer is improved. In addition, when the fluid collides, the brazing material layer serves as a cushioning material and can reduce damage to the collar and the locking portion.
In addition, a pair of opening surface means the end surface formed in the both ends of the length direction (longitudinal direction) of columnar honeycomb bodies, such as a quadratic prism shape which has predetermined length.

In the composite part of the present invention, the flange portion includes a ceramic porous body and an impregnated body impregnated in pores of the ceramic porous body, and the impregnated body further reaches the side wall of the honeycomb body, It is desirable to join the portion and the honeycomb body.

In the composite part, the impregnated body impregnating the collar part reaches the side wall of the honeycomb body and joins the collar part and the honeycomb body, thereby forming the collar part having such a configuration. The flange portion can be formed without processing the honeycomb body itself, the flange portion becomes a dense member, a gap is generated between the flange portion and the honeycomb body, and the fluid flowing through the casing Leakage from the joint can be easily prevented.

In the composite part of the present invention, the ceramic porous body is preferably a SiC fiber molded body or a ceramic fired body having pores.
In the above composite part, the sintered body of SiC fiber or the ceramic fired body having pores has heat resistance, and therefore, due to heat or the like when forming a joint (brazing) or using the composite part. There is no risk of damage and it can be used stably.
When SiC fiber is used as the constituent material of the ceramic porous body, a desired shape can be easily obtained, so that a collar portion having a desired shape can be obtained. Specifically, SiC fiber long fibers can be wound around the honeycomb body, and the collar portion can be easily formed by adjusting the shape while winding the long fibers. On the other hand, the use of a ceramic fired body having pores has the following advantages. The ceramic fired body having pores can easily obtain a desired shape such as press molding and post-processing, and can be bonded to the honeycomb body and sealed with pores simultaneously by impregnation of the impregnated body. . The impregnation can be performed by bringing a metal, silicon, or the like into contact with a ceramic fired body having pores, followed by heating and melting.

In the composite part of the present invention, the impregnated body is preferably a metal or silicon having a melting point higher than that of the brazing material constituting the brazing material layer.
In the composite part, since the impregnated body is a metal or silicon having a melting point higher than that of the brazing material constituting the brazing material layer, the brim portion does not move during brazing, and it is easy to apply pressure. A junction can be formed.

In the composite component according to the aspect of the invention, it is preferable that the locking portion includes a step formed by bending the casing.
In the composite part, the engaging portion using the step is opposed to the side surface of the flange portion, a brazing material is interposed therebetween, and the step is pressed against the brazing material to weld the engaging portion to the casing. The composite of the present invention can be easily produced without providing it. Further, when the fluid flows into and out of the opening surface of the honeycomb body, the fluid that reaches the vicinity of the joint portion is bent from the casing and the flow path is throttled, so that the speed of the fluid is reduced and the fluid that is added to the joint portion It becomes possible to reduce the impact.
The step can be formed just before brazing by mechanical force. By forming the step during pre-heating of brazing, the casing becomes softer than room temperature, so that the processing accuracy is improved.

In the composite part of the present invention, it is preferable that the locking portion is formed of a rib-like structure welded to the casing portion.
In the composite part, the side surface adjacent to the casing inner surface of the rib-like structure, the flange portion and the side surface are opposed to each other, a brazing material is interposed therebetween, and the protrusion is pressed against the brazing material. The composite of the invention can be made. In addition, by using a rib-like structure, the locking portion can be firmly joined to the brazing material layer in a plane, and the stress caused by the difference in thermal expansion between the casing and the honeycomb body can be applied to the brazing material layer. Can be relaxed.
It should be noted that the order of welding and brazing may be performed from either, and considering the mounting property of the casing and dimensional variation, it is preferable to perform welding after brazing.

In the composite component of the present invention, it is desirable that the locking portion is formed by bending a part of the end portion of the casing portion inward.
In the composite part, a locking portion formed by bending a part of the end portion of the casing inward is opposed to a side surface of the flange portion, a brazing material is interposed therebetween, and the protrusion is brazed. By pressing onto the casing, the composite of the present invention can be easily manufactured without providing the casing with a locking portion by welding or the like. In addition, by using the locking portion at the end, the locking portion can be firmly joined to the brazing material layer in a flat surface, and the stress caused by the difference in thermal expansion generated between the casing and the honeycomb body is caused by the brazing material layer. Can be relaxed on a flat surface.

In the composite part of the present invention, the end surface of the flange has a groove that circulates along the honeycomb body, and the locking portion circulates along the honeycomb body and can be inserted into the groove. It is desirable that the convex portion of the locking portion is inserted into the groove of the flange portion, and that the brazing material layer is interposed between the groove and the convex portion.
Since the convex portion of the locking portion is inserted into the groove of the flange portion, and the brazing material layer is interposed between the groove and the convex portion, the flange portion and the locking portion And the fluid flowing through the casing can be reliably prevented from leaking from the joint. In addition, since the convex portion of the locking portion is surrounded by a brazing material layer, the brazing material is brazed regardless of the stress direction against the stress applied to the joint caused by the difference in thermal expansion of the casing or the honeycomb body. The material layer can relieve stress, and the reliability of the joint can be improved.

The composite part of the present invention has a plurality of the joint portions, and is surrounded by the casing, the joint portions, and the side walls of the honeycomb body, and has a side wall side space that is isolated from the opening surface side space facing the opening surface. It is desirable to have.
Since the composite part has an opening surface side space facing the opening surface and a side wall side space separated from each other, the composite part can be used to perform heat exchange and material exchange (filter) using this space.

In the composite part of the present invention, it is desirable to have an opening on the side wall of the honeycomb body facing the side wall side space.
In the composite part, the side wall side space that is separated from the opening surface side space facing the opening surface is provided, and the side wall of the honeycomb body has an opening. It can be a composite part for exchange (filter).

In the composite part of the present invention, the cells constituting the honeycomb body are constituted by a first cell connected to the side wall side space by an opening provided on the side wall and a second cell connected to the opening side space. Preferably, the first cell and the second cell are separated by a cell partition that separates the cells.
In the composite part, the first cell and the second cell are separated by a cell partition that separates the cells, so that the side wall side space and the opening surface side space of the composite part are Heat exchange and mass exchange (filter) can be performed.

In the composite component of the present invention, openings are provided in two opposing side walls of the honeycomb body facing the side wall side space, and fluid is introduced into the casing in the openings provided in the two side walls. It is desirable that a fluid introduction passage and a fluid discharge passage for discharging the fluid are provided.

In the composite part, the casing is provided with a fluid introduction passage for introducing fluid into the openings provided in the two side walls and a fluid discharge passage for discharging the fluid. When distributed, it can be distributed smoothly and heat exchange can be performed.

In the composite part, it is preferable that the joint portion is further provided between the fluid introduction passage and the fluid discharge passage.

In the composite part, since the joint portion is further provided between the fluid introduction passage and the fluid discharge passage, mixing of the fluid to be introduced and the fluid to be discharged in the side wall-side space can be prevented.

FIG. 1 is a perspective view schematically showing a honeycomb body of the present invention. 2A is a cross-sectional view schematically showing the composite part of the present invention, and FIG. 2B is an enlarged cross-sectional view in which the vicinity of the joint part of the composite part shown in FIG. 2A is enlarged. . FIG. 3 is a cross-sectional view schematically showing another example (second example) of the composite part of the present invention. It is sectional drawing which shows typically another example (3rd example) of the composite component of this invention. FIG. 5 is a sectional view schematically showing still another example (fourth example) of the composite part of the present invention. FIG. 6 is a sectional view schematically showing still another example (fifth example) of the composite part of the present invention. Fig. 7 (a) is a perspective view schematically showing a honeycomb body constituting the composite part of the present invention, and Fig. 7 (b) is still another example of the composite part of the present invention including the honeycomb body ( It is sectional drawing which shows typically a 6th example. FIG. 8 is a cross-sectional view showing an example of a composite part different from the present invention.

Detailed Description of the Invention
A composite part of the present invention is a composite part including a honeycomb body having a pair of opening surfaces and side walls, a casing surrounding the honeycomb body, and a joint for joining the honeycomb body and the casing. The joining portion includes a flange portion provided around the side wall of the honeycomb body, and a locking portion provided on the inner surface of the casing so as to face the end surface of the flange portion on the opening surface side. And a brazing material layer and a brazing material layer sandwiched between the locking portions.

An example (first example) of the composite part of the present invention will be described.
The honeycomb body constituting the composite part of the present invention has a pair of opening surfaces and side walls.
FIG. 1 is a perspective view schematically showing a honeycomb body of the present invention.
As shown in FIG. 1, the honeycomb body 10 of the present invention is a square pillar-shaped ceramic fired body, and includes a large number of cells 11 serving as fluid flow paths arranged in the longitudinal direction X of the honeycomb body 10, and the cells 11. And cell partition walls 12 for partition formation. The honeycomb body 10 includes opening surfaces 15a and 15b in which the cells 11 are open, and a side wall 16 that is a side surface other than the opening surfaces. Here, the honeycomb body 10 has a quadrangular prism shape, but may have a cylindrical shape or a polygonal column shape other than the quadrangular column shape.
The mode of the cells formed in the honeycomb body is not limited to the mode shown in FIG. 1, and includes both cells penetrating in the longitudinal direction and cells penetrating in the vertical direction as shown in FIG. It may be a thing.

The material of the honeycomb body 10 is not particularly limited. For example, nitride ceramics such as aluminum nitride, silicon nitride, boron nitride, and titanium nitride, and carbide ceramics such as zirconium carbide, titanium carbide, tantalum carbide, and tungsten carbide. , Oxide ceramics such as alumina, zirconia, cordierite, mullite, and aluminum titanate.

A flange portion 18 is provided around the side wall 16 of the honeycomb body 10. The flange 18 has a rectangular shape when cut in parallel with the longitudinal direction X of the honeycomb body 10 and is provided over the entire circumference. In the honeycomb body 10 shown in FIG. 1, there is one ridge portion 18, but it may be provided at two locations in a region near the opening surfaces 15 a and 15 b. A specific example in which the flanges 18 are provided at two locations will be described later.
The width d1 of the collar portion 18 is, for example, about 1 to 10 mm, and the height h1 of the collar portion 18 is, for example, about 3 to 15 mm. When the width d1 is about 1 to 10 mm, the flange 18 is not broken or broken by a load applied during brazing, and fluid leakage from the flange 18 can be prevented. And since preheating at the time of brazing is also shortened, processing time can be shortened. Further, if the height h1 is about 3 to 15 mm, the possibility of damaging the honeycomb body 10 due to the dimensional error of the locking portion 24 is reduced, and further, the rupture due to the moment force generated by the force applied during brazing is suppressed. can do.

The flange portion 18 includes a ceramic porous body and an impregnated body in which pores of the ceramic porous body are impregnated. The impregnated body further reaches the side wall 16 of the honeycomb body 10, and the flange portion 18, the honeycomb body 10, Are joined.
Examples of the ceramic constituting the ceramic porous body include the same materials as the material of the honeycomb body 10 described above. By using the same material, the difference in thermal expansion due to the material can be reduced, so that thermal strain can be suppressed and breakage and chipping can be prevented. Of these materials, SiC having excellent heat resistance and thermal conductivity is preferable.
Specific examples of the ceramic porous body include, for example, a molded SiC aggregate, a porous SiC fired body having a porosity of 35 to 65%, and the like.
The above-mentioned ceramic porous body is melt-impregnated with Si to form the flange portion 18. At that time, after the above-mentioned ceramic porous body is melt-impregnated with Si, a ceramic porous body melt-impregnated with Si as an impregnation body may be provided around the side wall of the honeycomb body to form the flange 18. Alternatively, a ceramic porous body may be provided around the side wall of the honeycomb body, and then Si that is an impregnated body may be melt impregnated.

When a SiC fibrous aggregate is molded or a SiC porous body is impregnated with Si to form a flange 18, heat conductivity can be increased while maintaining high heat resistance and corrosion resistance. Thermal stress can be reduced. Further, since silicon has metallic properties, it is considered that the bonding force with the brazing material layer can be increased. For this reason, it is considered that a strong joining force can be obtained by joining with the locking portion. Furthermore, it is possible to prevent the brazing material from entering the brim portion 18 more than necessary during brazing. Since the brazing material melted by brazing is less likely to be absorbed by the flange 18 than necessary, a sufficiently thick brazing material layer can be formed, and a strong bonding force is provided between the flange 18 and the locking portion 24. Can be obtained. For this reason, it is thought that the junction part 19 can exhibit heat resistance, corrosion resistance, and high joint strength.

The impregnated body is not particularly limited as long as it is a metal having a melting point higher than that of the brazing material constituting the brazing material layer in addition to the above-described Si, and examples thereof include metal alloys such as aluminum, magnesium, and copper. Can be mentioned.

When the porous ceramic body is provided around the side wall 16 of the honeycomb body 10 and then the impregnated Si is melted and impregnated to form the flange portion 18, the molten Si reaches the side wall 16 of the honeycomb body 10. The flange portion 18 and the side wall 16 of the honeycomb body 10 are joined.
When a ceramic porous body melt-impregnated with Si, which is an impregnated body, is provided as the flange portion 18 around the side wall 16 of the honeycomb body 10, a ceramic porous body containing the impregnated body made of Si (the flange portion) 18) is heated so that the molten Si reaches the side wall 16 of the honeycomb body 10, and the flange 18 and the side wall 16 of the honeycomb body 10 are joined.
In order to perform bonding firmly, Si may be melt-impregnated in advance on the side wall 16 of the honeycomb body 10 corresponding to the region where the flange portion 18 is provided.

Next, a casing that surrounds the honeycomb body 10 will be described.
2A is a cross-sectional view schematically showing the composite part of the present invention, and FIG. 2B is an enlarged cross-sectional view in which the vicinity of the joint part of the composite part shown in FIG. 2A is enlarged. .
As shown in FIG. 2A, the casing 21 is a part of a metal container that houses the honeycomb body 10, and the cross section perpendicular to the longitudinal direction of the honeycomb body 10 is a substantially rectangular shape that is slightly larger than the honeycomb body 10. It is a cylindrical shape. The shape of the casing 21 is not limited to a substantially rectangular tube shape, and the cross section perpendicular to the longitudinal direction of the honeycomb body 10 may be a cylindrical shape or a polygonal shape according to the shape of the honeycomb body 10. Good. As the metal material constituting the casing 21, stainless steel is preferable.
Since stainless steel is a material having corrosion resistance and heat resistance among metals, it can be used in various applications by combining with the honeycomb body 10. In addition, stainless steel has a high melting point and high chemical resistance such as hydrogen sulfide and nitric acid. Therefore, damage to the metal body received during brazing can be reduced and reliability is high.

An inflow passage (not shown) that supplies fluid to the casing 21 is connected to one end of the casing 21 via a funnel-shaped connection portion 22. Further, an outflow passage (not shown) for discharging fluid from the casing 21 is connected to the other end portion of the casing 21 via a funnel-shaped connection portion 23.

The inner surface of the casing 21 is provided with a locking portion 24 for joining with the flange portion 18 provided on the honeycomb body 10. The method of providing the locking portion will be described by taking the completed composite part 20 as shown in FIG. 2 as an example.
In the composite part 20 shown in FIG. 2, the locking portion 24 is obtained by welding a rib-like structure to the inner periphery of the casing 21, and the cross section of the locking portion 24 parallel to the longitudinal direction of the honeycomb body 10 is rectangular. It has become. The material of the locking portion 24 is a metal, and stainless steel is preferable as in the case of the casing 21. The width of the locking portion is preferably about the same as the height h1 of the flange portion 18. It is preferable that the locking portion 24 and the ceramic body 10 are not in contact with each other. By not being in contact with each other, the engaging portion 24 does not damage the ceramic body 10 due to the difference in thermal expansion of each portion, and a highly reliable composite part is obtained.
The locking portion 24 is provided on the inner surface of the casing 21 so as to face the end surface 18 a on the opening surface side of the flange portion 18, and the brazing material layer 26 is sandwiched between the flange portion 18 and the locking portion 24.

Next, the joint portion 19 composed of the flange portion 18, the locking portion 24, and the brazing material layer 26 will be described.
The material of the brazing material layer constituting the joint portion 19 is not particularly limited. For example, a commercially available metal brazing material or a Ti brazing material such as an Ag—Cu—Sn—Ti based material is used. And active metal brazing materials such as Ag—Cu—In—Ag based brazing materials. Among the metal brazing materials, Ti-based brazing materials are particularly preferable.
Since the Ti-based brazing material activates the surface of the flange portion 18 made of a ceramic porous body and a reaction product peculiar to the material of the flange portion 18 is generated at the bonding interface with the flange portion 18, the bonding to the flange portion 18 is performed. Have the ability. For example, when the ceramic porous body constituting the flange 18 is TiN when it is a nitride, TiO ₂ is generated when the ceramic porous body is an oxide, and TiC is generated when the ceramic porous body is a carbide at the bonding interface with the ceramic porous body. . For this reason, the joint strength of the joint part 19 can be increased by applying the flange part 18 made of a ceramic porous body and the engaging part 24 to the joint part.

When manufacturing the composite component 20 having such a configuration, after the honeycomb body 10 is inserted into the casing 21, the locking portion 24 provided in the casing 21 and the flange portion 18 provided in the honeycomb body 10 are provided. Opposing each other at a predetermined distance. At this time, a brazing material is attached to at least one of the side surface 24 a of the locking portion 24 that faces the flange portion 18 and the end surface 18 a of the flange portion 18 that faces the locking portion 24.
Thereafter, the joining portion 19 can be formed by melting the brazing material, applying pressure so as to press the brazing material layer in the semi-molten state by the locking portion 24, and cooling. In this manner, since the joining is performed by applying a pressure that presses the brazing material layer at the locking portion 24, the outflow of the brazing material can be prevented, and the generation of a gap due to the outflow of the brazing material can be prevented. In addition, since the hook portion 18 and the locking portion 24 can be firmly bonded to each other by the brazing material layer 26 by joining the locking portion 24 so as to press, the hook portion 18 and the locking portion 24 can be connected to each other. It is difficult for gaps due to poor bonding to occur between them. As a result, the joining force between the flange portion 18 and the locking portion 24 can be kept sufficiently high, and the fluid flowing through the casing 21 can be prevented from leaking from the joining portion 19.

FIG. 8 is a cross-sectional view showing an example of a composite part different from the present invention.
In the composite part shown in FIG. 8, a protrusion 124 whose cross section parallel to the longitudinal direction of the honeycomb body 100 is a horizontally long rectangle is formed on the inner surface of the casing 121, and is similar to the protrusion 124 around the side wall 106 of the honeycomb body 100. A shaped collar 108 is formed. Then, the lower surface 124 b of the protruding portion 124 and the upper surface 108 b of the flange portion 108 are bonded to each other through the brazing material layer 126 to form a bonding portion 129. In this case, the distance between the lower surface 124b of the protrusion 124 and the upper surface 108b of the flange 108 is determined by the dimensions of the casing 121, the protrusion 124, the honeycomb body 100, and the flange 108. Therefore, in order to make the distance between the lower surface 124b of the protrusion 124 and the upper surface 108b of the flange 108 constant, it is necessary to strictly set the dimensions of the casing 121, the protrusion 124, the honeycomb body 100, and the flange, If the dimensions are a little out of order and the gap is too wide, there is a problem that the projection 104 and the flange 108 cannot be joined properly. Further, in such a configuration, in the casing formed in a cylindrical shape, a portion where the protruding portion 124 cannot be pressed against the brazing material layer occurs, and when the brazing material is melted, the brazing material becomes the side wall of the honeycomb body 100. When it flows to 106 and reaches the opening surface, the problem of blocking the cell occurs. However, in the case of the composite part of the present invention, the above-mentioned problem does not occur.

FIG. 3 is a cross-sectional view schematically showing another example (second example) of the composite part of the present invention. In the composite part shown in FIG. The structure of the body, casing, and collar is the same as that of the composite part shown in FIG.

In the composite component 30 shown in FIG. 3, the locking portion 34 is provided with a step by bending the casing twice and bending, and the two casings 31 a and 31 b have different cross-sectional areas perpendicular to the longitudinal direction of the honeycomb body 10. Is forming. A step portion formed perpendicularly to the casing 31a and the casing 31b formed between the casing 31a and the casing 31b is used as the locking portion 34. For this reason, the method of forming the latching | locking part 34 becomes easy compared with the composite component 20 shown in FIG.

In the composite component 30 configured as described above, the locking portion 34 is provided on the inner surface of the casing 31 so as to face the end surface 18a on the opening surface side of the flange portion 18 as in the composite component 20 shown in FIG. The brazing material layer 26 is sandwiched between the flange portion 18 and the locking portion 34.

When manufacturing the composite component 30 having such a configuration, after the honeycomb body 10 is inserted into the casing 31, the locking portion 34 provided in the casing 31 and the flange portion 18 provided in the honeycomb body 10 are provided. Opposing each other at a predetermined distance. At this time, a brazing material is attached to at least one of the side surface 34 a of the locking portion 34 that faces the flange portion 18 and the end surface 18 a that faces the locking portion 34 of the flange portion 18.
Thereafter, the brazing material layer 26 can be formed by melting the brazing material, applying pressure so as to press the brazing material layer in the semi-molten state by the engaging portion 34, and cooling. In this manner, since the joining is performed by applying a pressure that presses the brazing material layer at the locking portion 34, it is possible to prevent the brazing material from flowing out, and to prevent generation of a gap due to the brazing material outflow. In addition, since the hook portion 18 and the locking portion 34 can be firmly bonded to each other by the brazing material layer 26 by joining the locking portion 34 so as to be pressed, the hook portion 18 and the locking portion 34 can be connected to each other. It is difficult for gaps due to poor bonding to occur between them. As a result, the joining force between the flange portion 18 and the locking portion 34 can be kept sufficiently high, and the fluid flowing through the casing can be prevented from leaking from the joining portion 29.

FIG. 4 is a cross-sectional view schematically showing yet another example (third example) of the composite part of the present invention. In the composite part shown in FIG. The structure of the body, casing, and collar is the same as that of the composite part shown in FIG.

As shown in FIG. 4, in the composite part 40, the locking part 44 is formed by bending a part of the end of the casing 41 inward so as to be perpendicular to the casing 41. For this reason, the method of forming the latching | locking part 44 becomes easy compared with the composite component 20 shown in FIG.

In the composite component 40 configured in this manner, the locking portion 44 is provided on the inner surface of the casing 41 so as to face the end surface 18a on the opening surface side of the flange portion 18 as in the composite component 20 shown in FIG. The brazing material layer 26 constituting the joint portion 39 is sandwiched between the flange portion 18 and the locking portion 44.

Since the method of manufacturing the composite component 40 having such a configuration is substantially the same as the method of manufacturing the composite component 20 shown in FIG. 2, the description thereof is omitted here. The composite component 40 having the above configuration exhibits the same effect as the composite component 20 shown in FIG.

FIG. 5 is a sectional view schematically showing still another example (fourth example) of the composite part of the present invention. In the composite part shown in FIG. On the other hand, the structure of the honeycomb body and the casing is the same as that of the composite part shown in FIG.

As shown in FIG. 5, in this composite component 50, the end surface of the flange portion 58 has a groove 58 a that circulates along the honeycomb body 10, and the locking portion 54 provided on the inner surface of the casing 51 includes the honeycomb body 50. 10 has a convex portion 54a that can be inserted into the groove 58a of the flange portion 58. The groove portion 58a of the flange portion 58 faces the connecting portion 52 on the fluid flowing side, and the convex portion 54a of the locking portion 54 faces the connecting portion (not shown) on the fluid flowing side. Thus, the projection 54 a of the locking portion 54 can be inserted into the groove 58 a of the flange portion 58.

And the convex part 54a of the latching | locking part 54 is inserted in the groove | channel 58a of the collar part 58, and the brazing | wax material layer 56 intervenes between the groove | channel 58a of the collar part 58 and the convex part 54a of the latching | locking part 54. Yes.

When manufacturing the composite component 50 having such a configuration, after the honeycomb body 10 is inserted into the casing 51, the locking portion 54 provided in the casing 51 and the flange portion 58 provided in the honeycomb body 10 are provided. Opposing each other at a predetermined distance. At that time, a brazing material is attached to at least one of the convex portion 54 a of the locking portion 54 and the inside of the groove 58 a of the flange portion 58. Thereafter, the brazing material is melted and pressure is applied so as to press the brazing material layer in the semi-molten state with the convex portion 54a of the locking portion 54, and the convex portion 54a of the locking portion 54 is inserted into the groove 58a of the flange portion 58. Then, the brazing material layer 56 can be formed by cooling.
Since the brazing material layer 56 that joins the locking portion 54 and the flange portion 58 is formed in the above-described manner, it is possible to more reliably prevent the brazing material from flowing out and prevent the occurrence of a gap due to the brazing material outflow. can do. In addition, the flange portion 58 and the locking portion 54 can be firmly joined by the brazing material layer 56. As a result, a gap or the like due to poor bonding is unlikely to occur between the flange portion 58 and the locking portion 54, the bonding force between the flange portion 58 and the locking portion 54 can be kept sufficiently high, and the inside of the casing is circulated. It is possible to reliably prevent the fluid from leaking from the joint portion 49.

FIG. 6 is a sectional view schematically showing still another example (fifth example) of the composite part of the present invention. In the composite part shown in FIG. 6, there are two locking portions and two hooks. Although the points provided are different from the composite parts shown in FIGS. 2 to 5, the configurations of the honeycomb body and the casing are the same as those of the composite parts shown in FIG. 2.

In the composite part 60 shown in FIG. 6, locking portions 64 are provided at two locations on the inner surface of the casing 61, a portion close to the connection portion 62 on the side where the fluid flows and a portion close to the connection portion 63 on the side where the fluid flows. On the other hand, the honeycomb body 10 is also provided with flanges 18 at two locations, a portion close to the opening surface 15a on the fluid flow side and a portion close to the opening surface 15b on the fluid flow side.

Further, as shown in FIG. 6, each of the two flange portions 18 has a joint portion 59 on the end surface 18 a on the side close to the opening surface 15 a on the fluid flow side of the honeycomb body 10, while the locking portion 64. Has a joint 59 on the side surface 64a on the side close to the opening surface 15b on the side from which the fluid flows.
That is, the brazing material layer 26 is sandwiched between the locking portion 64 and the flange portion 18, but the positional relationship between the locking portion 64, the brazing material layer 26 and the flange portion 18 is the same in two places, The locking portion 64 is close to the connection portion 62 into which the fluid flows, and the flange portion 18 is close to the connection portion 63 from which the fluid flows, and the brazing material layer 26 is sandwiched therebetween.

In the composite component 60 having such a configuration, a side wall 69 is formed that is surrounded by the casing 61, the joint portion 59, and the side wall 16 of the honeycomb body 10 and is completely isolated from the opening surface side space facing the opening surface. ing. For this reason, this composite component can be utilized as a heat exchanger etc. by utilizing the side wall side space 69 separated from the opening side space facing the opening surface.

When manufacturing the composite component 60 having such a configuration, the locking portion 64 previously separated from the casing 61 and the two flange portions 18 provided on the honeycomb body 10 are opposed to each other with a predetermined distance therebetween. . Here, each locking part 64 is composed of a plurality of parts, and the locking parts 64 are formed so as to surround the honeycomb body 10. At that time, a brazing material is attached to at least one of the side surface 64 a of the locking portion 64 facing the hook portion 18 and the end surface 18 a of the hook portion 18 facing the locking portion 64.
Thereafter, the brazing material is melted, the two locking portions 64 are moved in one direction (the direction of the connecting portion 63 from which the fluid flows), and pressure is applied to cool the brazing material layer in a semi-molten state, thereby cooling. Thus, two joint portions 59 can be formed at the same time. In this way, by applying a pressure for pressing the brazing material layer by the two locking portions 64, two joint portions 59 can be formed at the same time, the outflow of the brazing material can be prevented, and the outflow of the brazing material can be prevented. It is possible to prevent the occurrence of a gap due to In addition, since the flange portion 18 and the locking portion 64 can be firmly bonded to each other by the brazing material layer 26, a gap due to poor bonding or the like hardly occurs between the flange portion 18 and the locking portion 64.
Thereafter, the honeycomb body 10 is inserted into the casing 61, and the inner diameter of the casing 61 is adjusted by applying force to the entire outer peripheral surface of the casing 61. And the composite component 60 is produced by welding the casing 61 and the latching | locking part 64. FIG. Here, the casing may be an integral type such as a quadrangular prism or a cylinder, or may be a casing shape that is an integral type by combining divided shapes such as an L hour shape, a semicircular shape, and a crescent shape. In addition, you may comprise a casing, separating a casing into various shapes and welding with a latching | locking part.

Fig. 7 (a) is a perspective view schematically showing a honeycomb body constituting the composite part of the present invention, and Fig. 7 (b) is still another example of the composite part of the present invention including the honeycomb body ( It is sectional drawing which shows typically a 6th example.

The composite component 80 shown in FIG. 7 shows an example of a member that functions as a heat exchanger.
In this composite part 80, similarly to the composite part 60 shown in FIG. 6, two locking portions and two hooks are provided, and the joining mode between the locking part and the hook is shown in FIG. This is the same as the case of the composite component 60.

The honeycomb body 70 constituting the composite part of the present invention is an example of a honeycomb body configured to function as a heat exchanger. That is, the honeycomb body 70 includes first cells 73a and 73b provided in a direction (and vertical direction) perpendicular to the longitudinal direction of the honeycomb body 70, and second cells provided in the longitudinal direction of the honeycomb body 70. 71 and a cell partition wall 72 that separates the cells 71, 73a, 73b.

Regarding the second cell 71 provided in the longitudinal direction of the honeycomb body 70, a portion where the second cell 71 extending vertically with a certain width is not provided in the cross section perpendicular to the longitudinal direction of the honeycomb body 70 (band-like portion) ) And the second cell 71 is provided in a portion where the second cell 71 is provided and is aligned in the vertical direction across the cell partition wall 72.

Further, as shown in FIG. 7A, first cells 73a and 73b penetrating vertically are provided in a portion where the second cell 71 is not provided. The first cells 73a and 73b are provided at two locations, a portion close to the connection portion 82 into which the fluid flows and a portion close to the connection portion 83 from which the fluid flows out, and the second cell 71 and the first cells 73a and 73b. Are not connected to each other and are isolated by a cell partition wall 72.

In the composite part 80 shown in FIG. 7, as in the composite part shown in FIG. 6, two parts of the inner surface of the casing 81 near the connection part 82 on the side into which the fluid flows and the part near the connection part 83 on the side from which the fluid flows out. Lock portions 84 are provided at the locations. On the other hand, the honeycomb body 70 also has two portions: a portion close to the opening surface 75a on the fluid flow side and a portion close to the opening surface 75b on the fluid flow side. A portion 78 is provided, and the locking portion 84 and the flange portion 78 are joined by the brazing material layer 26.

In the composite part 80 having such a configuration, a side wall side space 89 is formed which is surrounded by the casing 81, the joint portion 79, and the side wall 76 of the honeycomb body 70 and is isolated from the opening surface side space facing the opening surfaces 75a and 75b. Has been.
A fluid introduction passage 87 a and a fluid discharge passage 87 b are provided in the space between the two locking portions 84 of the casing 81. The fluid introduction passage 87a penetrates the casing 81, and its end is in close contact with the side wall 76 around the portion of the honeycomb body 70 where the first cells 73b are formed. Similarly, the fluid discharge passage 87b penetrates the casing 81, and its end is in close contact with the side wall 76 around the portion of the honeycomb body 70 where the first cells 73a are formed.
For this reason, when a fluid such as air is introduced from the fluid introduction passage 87a, the fluid passes through the first cell 73b, flows out into the side wall space 89, and then passes through the first cell 73a to discharge the fluid. It flows out of the passage 87b.

On the other hand, other fluid such as exhaust gas passes through the connecting portion 82, flows into the second cell 71 from the opening surface 75a of the honeycomb body 70, and flows out from the opening surface 75b.
Therefore, for example, if the fluid passing through the second cell 71 of the honeycomb body 70 is a fluid having a high temperature, the temperature of normal temperature air or the like introduced from the fluid introduction passage 87a can be increased, and the heat exchanger Function.
Here, the honeycomb body and the composite part shown in FIG. 7 are examples, and for example, the first cells 73a and 73b may be connected to the inside of the honeycomb body. Further, when the first cells 73a and 73b are connected, the first cell does not have to penetrate, and it is sufficient if fluid such as air introduced from the fluid introduction passage can be discharged to the fluid discharge passage.

A joint portion may be further provided between the fluid introduction passage and the fluid discharge passage. When the joint portion is further provided between the fluid introduction passage and the fluid discharge passage, mixing of the fluid to be introduced and the fluid to be discharged in the side wall-side space can be prevented. In particular, when the first cell does not penetrate the honeycomb body, it is preferable that a joint portion is further provided between the fluid introduction passage and the fluid discharge passage. This is because the fluid temperature is not averaged by the mixing, heat can be efficiently transferred from the honeycomb body to the fluid, and as a result, the heat exchange efficiency can be improved.

Since the composite part of the present invention having the above-described configuration can firmly fix the honeycomb body to the casing via the engaging portion, it can be used as an exhaust gas filter or a catalyst carrier.
In addition, by providing an engagement portion and a collar portion at two locations and joining them, an isolated space partitioned by two joint portions can be formed, so that, like the composite part 80 shown in FIG. By devising the cell formation method and the fluid distribution method, the device can be used as a heat exchanger.

10, 70 Honeycomb body 11 Cell 12, 72 Cell partition wall 15a, 15b Opening face 16 Side wall 18, 58, 78 Eaves 18a End face 19, 29, 39, 49, 59, 79 Joint part 20, 30, 40, 50, 60 , 80 Composite parts 24, 34, 44, 54, 64, 84 Locking portions 26, 56 Brazing material layers 21, 31a, 31b, 41, 51, 61, 81 Casing 22, 23, 32, 42, 52, 62, 63, 82, 83 Connecting portion 24a, 34a, 44a, 64a Side surface 54a Protruding portion 58a Groove 69, 89 Side wall side space 71 Second cell 73a, 73b First cell

Claims (13)

A composite part comprising a honeycomb body having a pair of opening surfaces and side walls, a casing surrounding the honeycomb body, and a joint for joining the honeycomb body and the casing,
The joint portion includes a flange portion provided around the side wall of the honeycomb body, a locking portion provided on an inner surface of the casing so as to face an end surface of the flange portion on the opening surface side, A composite part comprising a flange part and a brazing material layer sandwiched between the locking parts. The eaves part is composed of a ceramic porous body and an impregnated body impregnated in pores of the ceramic porous body, and the impregnated body further reaches the side wall of the honeycomb body, and the eaves part and the honeycomb body are combined. The composite part according to claim 1, which is bonded. The composite part according to claim 1 or 2, wherein the ceramic porous body is a SiC fiber molded body or a ceramic fired body having pores. The composite part according to claim 1, wherein the impregnated body is a metal or silicon having a melting point higher than that of the brazing material constituting the brazing material layer. The composite part according to any one of claims 1 to 4, wherein the locking portion includes a step formed by bending the casing. The composite part according to any one of claims 1 to 4, wherein the locking portion includes a rib-like structure welded to the casing. The composite part according to claim 1, wherein the locking portion is formed by bending a part of an end portion of the casing inward. The end surface of the flange has a groove that circulates along the honeycomb body,
The locking portion has a convex portion that circulates along the honeycomb body and can be inserted into the groove,
The said brazing material layer is interposed between the said groove | channel and the said convex part while the said convex part of the said latching | locking part is inserted in the said groove | channel of the said collar part. Composite parts. The said joint part is provided with two or more, It is surrounded by the said casing, the said junction part, and the side wall of the said honeycomb body, and has the side wall side space isolated from the opening surface side space which faces the said opening surface. A composite part according to any one of the above. The composite component according to claim 9, wherein an opening is provided in a side wall of the honeycomb body facing the side wall side space. The cells constituting the honeycomb body are constituted by a first cell connected to the side wall side space by an opening formed on the side wall, and a second cell connected to the opening side space,
The composite part according to claim 9 or 10, wherein the first cell and the second cell are separated by a cell partition wall that separates the cells. Openings are respectively provided in two opposing side walls of the honeycomb body facing the side wall side space,
The said casing is provided with the fluid introduction channel | path for introducing a fluid into the opening provided in the said 2 side wall, and the fluid discharge channel | path for discharging | emitting fluid. Composite parts as described in. The composite part according to claim 12, further comprising the joint portion between the fluid introduction passage and the fluid discharge passage.

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