JP3408138B2 - Pipe route change unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe route changing unit, and more particularly to a pipe route changing unit capable of changing the route of a pipe without increasing a distance between two pipes whose routes should be changed.

[0002]

BACKGROUND OF THE INVENTION In various fields of fluid handling, tubes are arranged along a predetermined path, and the path is changed if necessary. When changing the path of the pipe in this way, in addition to bending the pipe itself, bend in the middle of the straight pipe,
A deformed pipe such as an elbow or a pipe path changing member having pipe connection ports in different directions is used.

For example, to flip the path of the tube 180 °,
In addition to using the return bend, as shown in FIG.
Is formed by bending at the bent portion 111.

[0004]

However, when the pipe path is reversed by keeping the distance between the pipes narrow, the reversal radius of the pipe must be made small, and the above-mentioned return bend is used. There is a problem that it cannot be dealt with depending on the method of bending.

That is, the return bend is generally made of cast metal, and the reversal radius thereof is standardized, and the following ones having a predetermined size are not manufactured. Also, when the pipe 110 is bent, the pipe is crushed when the pipe 110 is bent, so that the distance D between the ends 112 and 113 of the bent and shaped pipe 110 is increased.
₁ (twice the radius R ₁ of the pipe path change of the bent portion 111, FIG.
Could not be less than twice the tube diameter d ₁ .

Further, as shown in FIG. 12, it is conceivable to use a tube path reversing member 120 made of sheet metal.
The reversing member 120 is formed by pressing a metal plate to insert the pipe insertion portions 121 and 122, the communication portion 123 that connects the insertion portions 121 and 122, and the fitting insertion portions 121 and 122.
It is created by pressing the gaps to form the joints 124 and brazing the joints 124.

However, even if the pipe path is changed by using the inversion member 120, the two insertion portions 121, 121 are formed so that the joint portion 124 can be press-formed in the pipe path inversion member 120 having such a structure. It is necessary to separate 122, and the distance D ₂ between the _two pipes 130 and 140 (twice the pipe route change radius R ₂ ) cannot be made less than twice the diameter d ₂ of the pipes 130 and 140. .

Further, when it is desired to change the pipe path while keeping a predetermined space between pipes, the bend and elbow are standardized, and there is nothing other than a predetermined size. In order to change the pipe path to an outside dimension, it is necessary to bend the pipe or create an elbow or a pipe path changing member having a special pipe path changing dimension. And
It takes a lot of time to create elbows or pipe path reversal members with the required pipe path changing dimensions, and when manufacturing joint members with different reversal radii, molds of different dimensions are required and a small amount of various joint members are manufactured. Costs will increase.

The present invention has been made in view of the above problems in the prior art, can be manufactured at a low cost, can change the path of a pipe with the smallest radius for changing the route, and can easily obtain a desired pipe. It is an object of the present invention to provide a pipe route changing unit capable of setting a route changing radius and a changing direction.

[0010]

SUMMARY OF THE INVENTION In the present invention, the above-mentioned object is to provide a flat portion at the end of a tubular member, attach these tubular members to both sides of a substrate having through holes, and cover both tubular members with a covering member. This is solved by a pipe path changing unit configured to cover the respective end portions and the peripheral portions of the respective openings and to cover the flow path between the both opening ends and the through holes. According to the pipe path changing unit, by selecting the thickness of the substrate, the pipe path can be changed with a predetermined pipe path changing dimension, and the attachment directions of the two tubular members with respect to the substrate can be changed.
The pipe path can be changed in a desired shape.

The invention according to claim 1 comprises a plate-shaped member having openings 12 and 13 at substantially central portions of both surfaces constituting the front and back surfaces and having a through hole 11 serving as a fluid passage formed therein. A substrate 10 in which the peripheral edges of the openings of the holes are mounting surface portions 14 and 15;
Flat portions 21, 31 are provided on the outer peripheral side surfaces of the end portions 23, 33, respectively.
Is formed, and the respective flat surface portions 21 and 31 are in surface contact with different sides of the two mounting surface portions 14 and 15 of the substrate 10, respectively, and the opening ends 22 and 32 thereof are arranged in the vicinity of the openings 12 and 13, respectively. Book tubular members 20, 30, 25, 35,
Ends 23, 33 of the tubular members 20, 30 respectively
And the peripheries of the openings 12 and 13 respectively, and the flow path 4 is provided between the opening ends 22 and 32 and the through hole 11.
It is a pipe path changing part consisting of two covering members 40 and 50 forming 1, 51.

According to the pipe route changing unit of the first aspect,
The substrate 10 and the covering plates 40 and 50 can be molded from plate materials, respectively, and can be manufactured with a thin thickness and a reduced weight, and the manufacturing process of the pipe path changing portion can be simplified and the cost can be reduced. . Further, it is not necessary to bend the pipe itself as the pipe path changing portion, and the curved portion of the fluid path is constituted by the flow path formed by the covering member and the through hole of the substrate. Here, since the tubular members 20 and 30 are fixed by bringing their flat portions 21 and 31 into contact with the mounting surface portions 14 and 15 of the substrate 10, the two tubular members 20 whose routes are changed by the pipe route changing unit. , 30 can be set to a desired value by setting the thickness of the substrate 10, and the interval between the tubular members 20, 30 can be made as narrow as possible.

According to a second aspect of the present invention, the shapes of the end portions 23, 33 of the tubular members 20, 30, 25, 35 of the pipe path changing portion according to the first aspect form the flat portions 21, 31. The straight line portions 23a and 33a, two straight line portions 23b and 33b which linearly rise from both ends of the straight line portions 23a and 33a in the vertical direction with substantially the same width, and the two straight line portions 23b,
It is formed in a cross-sectional shape composed of circular arc portions 23c and 33c that connect the tip of 33b in an arc.

According to the pipe path changing unit of the second aspect,
The substrate 12 and the cover plate 13 can be formed from a plate material in a simple process, and can be thinned as a whole without lowering the strength, so that weight and cost can be reduced. In addition, positioning at the time of fitting is facilitated, and the gap between the two is prevented from being unnecessarily large, the brazing material is not used unnecessarily in a large amount, and the brazing cost can be reduced. . Further, the moldability of the tubular member and the covering plate can be improved, the manufacturing process can be simplified, and the productivity can be improved.

The invention according to claim 3 is the tubular member 25, 35 of the pipe path changing portion according to claim 1 or 2.
Of the end portions 28, 38 of the linear portions 28a, 38a forming the flat portions 21, 31, and the linear portions 28a, 38
It is formed in a cross-sectional shape composed of two straight line portions 28b and 38b that linearly rise from both ends of a in a direction in which they widen, and arc portions 28c and 38c that connect the tips of these two straight line portions in an arc. It is a thing.

According to the pipe path changing unit of the third aspect,
The amount of deformation of the tubular member can be reduced, the tubular member and the covering plate are less likely to come off during processing, workability can be improved, and further reduction in strength of the thin tubular member after processing can be prevented.

The invention according to claim 4 is the above-mentioned claim 1,
Substrate 1 of the pipe path changing unit according to claim 2 or claim 3.
0, the tubular members 20 and 30, and the abutting portions of the covering plates 40 and 50 are brazed and integrally fixed.

Further, according to the pipe path changing portion of the fourth aspect, the substrate 10 made of a plate material, the covering members 40 and 50, and the tubular members 20 and 30 can be airtightly joined to each other, which is thin and lightweight. The pipe path changing unit can be easily manufactured, and the cost of the pipe path changing unit can be reduced.

According to a fifth aspect of the present invention, both tubular members 20 and 30 of the pipe path changing portion according to any one of the first to fourth aspects are attached to the substrate 10 so as to be parallel to each other. It is a thing.

According to the pipe route changing unit of the fifth aspect,
When shifting or reversing the pipe path by a predetermined dimension in parallel, the pipe changing portion can be manufactured at low cost, and the pipe changing radius can be made as small as possible, and the pipe changing can be performed with a desired pipe changing diameter. You can make changes.

According to a sixth aspect of the present invention, the pipe mounting surface 1 of the substrate 10 in which both tubular members 20 and 30 of the pipe path changing portion according to any one of the first to fourth aspects pass through respective axes.
It is attached to the substrate 10 so that the two projection planes on 4, 15 form a predetermined angle.

According to the pipe route changing unit of the sixth aspect,
The tube path can be changed at any angle and tube path change size. Further, the pipe path changing dimension can be made as small as possible, and these pipe path changing portions can be manufactured at low cost.

The invention according to claim 7 is the substrate 60 of the pipe path changing portion according to any one of claims 1 to 6.
Is provided between the two plate-shaped members 61 and 62 having the pipe mounting surfaces 63 and 64 to which the tubular members 20 and 30 are respectively mounted, and between the two plate-shaped members. And a vibration insulating material 68 for insulating the vibration.

According to the invention described in claim 7, the pipe path can be inexpensively changed to a desired size, and the vibration insulating material 68 is provided between the connected tubular members 20 and 30. Therefore, the vibration of one tubular member is insulated by the vibration insulating member and is not transmitted to the other tubular member.

The invention according to claim 8 is the substrate 70 of the pipe path changing portion according to any one of claims 1 to 6.
Is provided between the two plate-shaped members 71 and 72 having the pipe mounting surfaces 73 and 74 to which the tubular members 20 and 30 are respectively mounted, and the distance between the two plate-shaped members. And a spacer member 78 for adjusting.

According to the pipe route changing unit of the eighth aspect,
The distance between the plate-shaped members 71, 72 can be adjusted by changing the thickness of the spacer member 78, and the spacer member 78 can be used for any pipe path changing portion that requires any pipe path changing dimension. Can be dealt with by changing.

The invention according to claim 9 is the substrate 80 of the pipe path changing portion according to any one of claims 1 to 8.
Is a disk shape.

According to the pipe route changing unit of the ninth aspect,
When attaching the tubular members 20 and 30 to the substrate 80,
Since the tubular members 20 and 30 can be mounted radially from the center of the substrate 80, the mounting state does not change due to the mounting angle of the tubular members, and both tubular members 2
The angle between 0 and 30 can be easily set at any angle.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a pipe path changing unit according to the present invention will be described below with reference to the drawings.

[First Embodiment] FIGS. 1 to 3 show a first embodiment of a pipe path changing unit according to the present invention. In this example, two tubular members 2 used for piping
The pipe path changing portion 1 is formed at the ends of 0 and 30. That is,
In this example, in the pipe path changing unit 1, the path of one tubular member 20 extending from one direction is reversed by 180 °,
The one tubular member 20 is changed to the other tubular member 30 arranged at a position parallel to the dimension D.

In this example, the pipe path changing unit 1 is the substrate 1
0, and tubular members 20, 3 attached to this substrate 10.
0 and sheet metal covering members 40 and 50 attached to the substrate 10 so as to cover the tubular members 20 and 30.

The substrate 10 is formed of a thick plate member made of, for example, stainless steel and having a substantially square shape, and a through hole 11 serving as a fluid passage is bored in the central portion of the plate member. The openings 12 and 13 of the through hole 11 appear in the, and mounting surfaces 14 and 15 are formed in an annular shape around the openings 12 and 13.

Further, the tubular members 20 and 30 are, for example, thin-walled pipe materials of stainless steel, and flat portions 21 and 31 are formed on the outer peripheral side surfaces of the end portions 23 and 33 where the pipe path changing portions are formed. The flat portions 21, 3 of the tubular members 20, 30
1 is in surface contact with different sides of the two mounting surface portions 14 and 15 of the substrate 10, respectively, and the opening end 2 thereof is
2, 32 are arranged so as to be adjacent to the openings 12, 13.

Then, the mounting surface portions 14, 1 of the substrate 10 are
A covering member 40, 50 is attached to the covering member 5, and the covering member 40, 50 is provided at each end 2 of both tubular members 20, 30.
3, 33 and the peripheral portions of the respective openings 12, 13 are covered, and curved flow paths 41, 51 are formed between the both open ends 22, 32 and the through hole 11.

The covering members 40 and 50 are shell structure members formed by press-molding a thin plate, and are the mounting surface portions 14 and 1 of the substrate 12.
5, the flat surface portions 42 and 52, and the tubular member fitting portions 43 and 53 into which the tubular members 20 and 30 are fitted are formed in a direction substantially orthogonal to the through hole 11, and the tubular member fitting portion 42 is formed. ,
The curved flow paths 41 and 51 extending from 52 to the through hole 11
And the shell structure portion 4 that covers the periphery of the through hole 11
4, 54 are formed.

The tubular members 20 and 30 fitted into the covering members 40 and 50 are plastically deformed so that a part of the end portions thereof become flat surfaces 21 and 31, respectively, and a cross section in the case where the flat surface side faces downward. The shape is such that the upper part is semicircular and the lower part is rectangular with approximately the same width. That is, this tubular member 2
The cross-sectional shape of 0 and 30 is, as shown in FIG.
The cross-sectional shape of the end portions 23 and 33 having the planes 21 and 31 of 0 and 30 is the linear portion 23 that forms the planes 21 and 31.
a, 33a, and rising from both ends with a uniform width 2
It is formed in a shape composed of a lower half portion composed of two linear portions 23b and 33b, and arcuate portions 23c and 33c connecting the tips of the two linear portions with an arc.

The sectional shapes of the tubular member fitting portions 43, 53 of the covering members 40, 50 are the tubular members 20, 30.
So that the end portions 23 and 33 having the flat surfaces 21 and 31 can be fitted therein, the flat surfaces 21 and 31 are formed to be substantially similar to the cross-sectional shape of the end portions 23 and 33, and the flat surfaces 21 and 31 are attached to the mounting surface portions 14 and 15 of the substrate 10.
The ends 23 and 33 of the tubular member are formed to have a size that allows them to be fitted internally when they are brought into contact with each other, and a gap necessary for allowing the brazing material to flow during brazing is provided in both of them. There is.

The board 10 is formed by cutting or pressing a thick plate into a flat plate material as shown in FIGS. 1 to 3, and using both sides of the plate material as the mounting surface portions 14 and 15 The two surfaces located at are simultaneously formed when they are cut into smooth parallel planes or when the plane shape is press-formed, and a through hole 11 is drilled and formed in the central portion.

In this case, the thickness t of the substrate 10 is selected according to the required route changing radius. That is, when the required route change radius is large, the thickness t of the substrate is thick, and when the route radius is small, the thickness t of the substrate is thin. The thickness t of the substrate 10 may be of any size as long as it can withstand brazing, which will be described later. The route change dimension of can be made as small as possible.

As shown in each of FIGS. 1 to 3, the covering members 40 and 50 are formed in a shell structure having a combination of a flat surface and a curved surface. That is, the covering members 40 and 50 include brazing flat surfaces 42 and 52 which are joined to the mounting surface portions 14 and 15 of the board, and the tubular member fitting portion 43 and
A curved surface along the outer shape of the tubular member on the tubular member fitting side of 53,
Flow paths 41, 51 connecting between the brazing plane and the curved surface
And are molded by pressing with a mold previously molded, and the shell structure portions 44 and 54 are molded.

The tubular members 20 and 30 use a processing jig having a cross-sectional shape formed by combining a semicircle and a rectangle, or a die combining an outer die and a core, and use a press machine or a hydraulic cylinder. It is molded by plastically deforming one end portion having a circular cross section by a pressing machine that operates by such as.

The pipe 10, the tubular members 20, 30 and the covering members 40, 50 thus formed are assembled and the joint surfaces are brazed together to form the pipe path changing portion 1. First, the bonding surface portions 14 and 15 of the molded substrate 10
The brazing flat surfaces 42 and 52 of the covering portions 40 and 50 are brought into contact with each other, and the brazing material is installed and fixed in a required position in the brazing when the brazing material is set in advance. , 50 to the tubular member fitting portions 43 and 53.
The deformed end portions 23 and 33 of 0 and 30 are fitted to each other, and a brazing preparation work is performed.

After completion of the preparatory work, the temperature of each joint is raised to the brazing temperature, and the supplied rod-shaped brazing material or, if a brazing material is previously installed, is melted to braze the bonding surface. . After brazing, the surface of the brazing portion is finished to complete the pipe path changing portion 1.

[Another Example of Attaching the Tubular Member] In the above example, the tubular member 20 and the tubular member 30 have a tube path of 1
It is assumed that they are inverted by 80 °, that is, the projection planes of the central axes of the tubular members 20 and 30 onto the joint surface portions 14 and 15 coincide with each other. The tubular member 30 can be attached to the joint surface portion of the substrate 10.

FIGS. 4 to 6 show an example in which both tubular members 20 and 30 are attached to the substrate 10 by providing another predetermined angle θ between the projection planes of the joint surfaces 14 and 15 passing through the central axes thereof. ing. In each of these examples, the substrate 10, the tubular members 20, 3
Since the configurations of 0 and the covering members 40 and 50 are exactly the same as those of the above-described embodiment, the same reference numerals are given in the drawings and the detailed description thereof will be omitted.

In the solid line of FIG. 4 and the example shown in FIG. 5, the tubular member 20 and the tubular member 30 are joined together at the joint surface portion 1 passing through their central axes.
It is attached to the substrate 10 so that the angle θ formed by the two projection planes on 4, 15 is 90 °.

An example shown by an imaginary line a in FIG. 4 is the tubular member 2.
0 and the tubular member 30 through their central axes
The angle formed by the projection plane on 5 is 90 ° on the side opposite to the above example.
It is attached to the substrate 10 so as to form

In the example shown in phantom line b in FIG. 4 and shown in FIG. 6, the angle formed by the projection planes of the tubular member 20 and the tubular member 30 on the joint surface portions 14 and 15 passing through the central axes thereof. 18
It is attached to the substrate 10 so as to form 0 °.

[Operation] As described above, according to the pipe path changing unit 1 according to the present embodiment, it is not necessary to bend the pipe itself as the pipe path changing unit, and the curved portion of the fluid path is covered with the covering member. Since the flow paths 41 and 51 formed by 40 and 50 and the through hole 11 of the substrate 10 are formed, the pipe path changing unit 1
The interval between the two tubular members 20, 30 whose path is changed by can be set to a desired value by changing the thickness of the substrate 10, and the interval between the two tubular members 20, 30 is as narrow as possible. Can be

Further, according to the pipe path changing portion according to the present embodiment, the substrate 12 and the covering portions 40 and 50 are each made of a plate material and can be formed by a simple process, so that the strength is not lowered and the overall structure is improved. Since the thickness can be reduced, the weight can be reduced and the manufacturing cost can be reduced as compared with the case of using a bend or an elbow formed by casting.

Further, the flat surface portions 21 of the tubular members 20 and 30,
Tubular member fitting parts 42 and 5 for fitting ends having 31
The thin and similar shape of 2 makes it possible to heat the brazing quickly and uniformly, shortening the brazing time and making the brazing easy and reliable. The joining cost can be reduced.

In addition, the flat surface portions 21 of the tubular members 20 and 30,
Since the end having 31 and the tubular member fitting portions 42 and 52 into which the ends are fitted are formed in similar shapes to each other, positioning of both at the time of fitting can be facilitated and problems of both can be solved. Avoiding unnecessarily large gaps,
The brazing material is not used unnecessarily in a large amount, and the brazing cost can be reduced.

[Other Embodiments] FIG. 7 is a sectional view showing another embodiment of the pipe path changing portion according to the present invention. The pipe path changing unit according to the present example has the same structure as the tubular members 20, 30 and the covering members 40, 50 as in the above-described first embodiment, so that the first pipe path changing unit in FIG. The same members as those of 1 are assigned the same reference numerals and detailed description thereof will be omitted.

In this example, the substrate 60 of the pipe path changing portion has the pipe mounting surface 6 on which the tubular members 20 and 30 are mounted, respectively.
Two plate-shaped members 61 and 62 provided with
A vibration insulating material 68 is provided between the two plate-shaped members to insulate vibration between the two tubular members. Plate-shaped member 6
Reference numerals 1 and 62 are formed of a metal plate material similarly to the substrate 10 of the first embodiment, through holes 63 and 64 are formed therein, and the tubular members 20 and 30 and the covering member 40 are provided on one side surface, respectively. Bonding surface portions 65 and 66 to which 50 is brazed are formed.

Then, these two plate-like members 61, 6
A vibration insulating member 68 is attached between the two. The vibration insulating member 68 is formed of a plate material having a high elasticity such as synthetic rubber or natural rubber, and the plate member 6 is used.
A through hole 67 communicating with the through holes 63, 64 of 1, 62 is formed, and is baked and adhered to the plate members 61, 62. Further, a metal bellows can be used as the vibration insulating member 68, and in this case, the plate bellows 61 and 62 are brazed and attached.

Therefore, according to the pipe path changing portion of this example, the pipe path can be inexpensively changed by a desired size, and the vibration insulating material 68 is provided between the connected tubular members 20 and 30. Since it is provided, the vibration of one tubular member can be insulated by the vibration insulating member and not transmitted to the other tubular member.

FIG. 8 is a sectional view showing another embodiment of the pipe path changing portion according to the present invention. In the pipe path changing unit according to the present example, the structures of the tubular members 20, 30 and the covering members 40, 50 are the same as those of the above-described first embodiment, and therefore, the structure shown in FIG.
The same members as those of the first pipe path changing unit are designated by the same reference numerals, and detailed description thereof will be omitted. In this example, the substrate 70 of the pipe path changing unit has two plate-shaped members 7 having pipe mounting surfaces 73 and 74 to which the tubular members 20 and 30 are mounted.
1, 72 and a spacer member 78 that is provided between the two plate-shaped members 71 and 72 and that adjusts the dimension between the plate-shaped members 71 and 72.

The plate-like members 71 and 72 are formed of a metal plate material like the substrate 10 of the first embodiment, through holes 71a and 72a are formed, and the tubular members 20 and Bonding surface portions 75 and 76 to which the 30 and the covering members 40 and 50 are brazed are formed. And
A spacer member 78 is brazed and attached between these two plate-shaped members 71 and 72. The spacer member 78 is made of a metal plate similar to the plate member and has a through hole 77 communicating with the through holes 73 and 74 of the plate members 71 and 72.

Therefore, according to the pipe path changing unit of this example,
The distance between the plate-shaped members 71, 72 can be adjusted by changing the thickness of the spacer member 78, and the spacer member 78 can be used for any pipe path changing portion that requires any pipe path changing dimension. Can be dealt with by changing. That is, when forming a pipe path changing portion at the site where piping is performed, if spacer members of different types are prepared, a spacer member having a thickness suitable for the pipe path changing portion is used. By doing so, the pipe path changing dimension of the pipe path changing portion can be made to be the optimum size.

FIG. 9 shows another example of the tubular member of the pipe path changing portion according to the present invention. In this example, for example, the tubular member 25 (35) has a different cross-sectional shape,
An inverted trapezoidal bottom formed by a straight line portion 28a (38a) that forms 6, 36 and two straight line portions 28b (38b) that linearly rise from both ends of the straight line portion 28a (38a) in the direction of increasing the width of each other. An arc-shaped upper half portion including a half portion and an arc portion 28c (38c) connecting the ends of the two straight portions in an arc is formed.

In this case, since the tubular member 25 (35) is closer to the round tubular member, the plastic working at the time of manufacturing is facilitated, and the tubular member and the tubular member fitting portion of the covering portion are unlikely to come off during assembly. Therefore, workability can be improved.

10 (1) and 10 (2) show another example of the substrate of the pipe path changing portion according to the present invention. In this example, the substrate 80 is formed in a disc shape. Then, the tubular members 20 and 30 are attached in a radial direction from the center of the substrate 80. Therefore, in this example, when the tubular members 20 and 30 are attached to the substrate 80, the tubular member 2
Since 0 and 30 can be mounted radially from the center of the substrate 80, there is no difference in the mounting state due to the mounting angle of the tubular members, and the angle sandwiched by the tubular members 20 and 30 can be easily set to any angle. Can be installed. Although the substrate 80 is described as a single plate-shaped member in FIG. 10, it is needless to say that the present invention can be applied to the case where a vibration insulating member or a spacer member is provided on the substrate.

[0063]

As described above, according to the pipe path changing portion of the present invention, by selecting the thickness of the substrate,
In addition to being able to change the pipe path with a predetermined pipe path changing dimension, the mounting directions of the two tubular members with respect to the substrate can be changed, and the pipe path can be changed in a desired shape. And
The invention according to each claim has the following effects.

According to the invention described in claim 1, since the tubular member is fixed by bringing the flat surface portion into contact with the mounting surface portion of the substrate, the two tubular members whose paths are changed by the pipe path changing portion The interval can be set to a desired value by setting the thickness of the substrate, and the interval between both tubular members can be made as narrow as possible. In addition, the substrate and the cover plate can be molded from plate materials, respectively, and can be manufactured with a thin wall and a reduced weight, so that the manufacturing process of the pipe path changing portion can be simplified and the cost can be reduced.

According to the second aspect of the present invention, the substrate and the cover plate can be formed from the plate material by simple steps, respectively, and the overall thickness can be reduced without lowering the strength. Can be reduced. In addition, positioning at the time of fitting is facilitated, and the gap between the two is prevented from being unnecessarily large, the brazing material is not used unnecessarily in a large amount, and the brazing cost can be reduced. . Further, the moldability of the tubular member and the covering plate can be improved, the manufacturing process can be simplified, and the productivity can be improved.

According to the third aspect of the invention, the deformation amount of the tubular member can be reduced, the tubular member and the cover plate are less likely to come off during processing, and workability can be improved. The strength of the thin tubular member after processing can be prevented from decreasing.

According to the fourth aspect of the present invention, the substrate made of the plate material, the covering member and the tubular member can be airtightly joined, and the thin and lightweight pipe path changing portion can be easily manufactured. Therefore, the cost of the pipe path changing unit can be reduced.

According to the fifth aspect of the present invention, when the pipe path is displaced in parallel by a predetermined dimension or inverted, the pipe path changing portion can be manufactured at low cost, and the path changing radius is as small as possible. It is possible to change the pipe path by the size and the desired pipe path change size.

According to the sixth aspect of the invention, the path of the pipe can be changed at an arbitrary angle and the pipe path changing dimension. Further, the pipe path changing size can be made as small as possible, and these pipe path changing portions can be manufactured at low cost.

According to the invention described in claim 7, the pipe path can be inexpensively changed by a desired size, and the vibration insulating material is provided between the connected tubular members. The vibration of the tubular member is insulated by the vibration insulating member and is not transmitted to the other tubular member.

According to the eighth aspect of the present invention, the interval between both plate-like members can be adjusted by changing the thickness of the spacer member, and what kind of pipe path change dimension is required Even in the case of the changed portion, it can be dealt with by changing the spacer member.

According to the ninth aspect of the present invention, when the tubular member is attached to the substrate, the tubular member can be attached radially from the center of the substrate, so that the attachment state changes depending on the attachment angle of the tubular member. Therefore, the angle between the tubular members can be easily set to an arbitrary angle.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first structural embodiment of a pipe path changing portion according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG. 1, showing a first structural embodiment of a pipe path changing portion according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 1 showing a first structural embodiment of a pipe path changing portion according to the present invention.

FIG. 4 is a cross-sectional view taken along line II-II in FIG. 1, showing a modification of the first embodiment of the pipe path changing unit according to the present invention.

5 is a sectional view corresponding to line VV in FIG. 4 of the pipe path changing portion shown in FIG. 4;

FIG. 6 is a cross-sectional view corresponding to line VV in FIG. 4, showing another modification of the first embodiment of the pipe path changing unit according to the present invention.

FIG. 7 is a cross-sectional view showing a modified example of the embodiment of the pipe path changing unit according to the present invention.

FIG. 8 is a cross-sectional view showing a modification of the embodiment of the pipe path changing unit according to the present invention.

FIG. 9 is a cross-sectional view showing a modified example of the embodiment of the pipe path changing unit according to the present invention.

FIG. 10 is a diagram showing a modified example of the embodiment of the pipe path changing unit according to the present invention, (1) is a plan view, and (2) is a front view.

FIG. 11 is a cross-sectional view showing a conventional pipe path changing unit.

FIG. 12 is a view showing a conventional pipe path changing unit, (1)
Is a sectional view, (2) is a sectional view taken along line ii-ii in (1).

[Explanation of symbols]

10 substrates 11 through holes 12, 13 openings 14,15 Mounting surface 20, 30 tubular member 21,31 Plane part 22,32 open end 23, 33 Edge 40,50 covering member 41,51 channel

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16L 43/00 B23K 1/18

Claims (9)

(57) [Claims] 1. A substrate comprising a plate-shaped member having an opening at substantially the center of both surfaces constituting the front and back surfaces and having a through hole serving as a fluid passage formed therein, the peripheral edge of the opening of the through hole being a mounting surface portion. A flat surface portion is formed on the outer peripheral side surface of each end portion, and each flat surface portion is in surface contact with a surface of the board on a different side of the two mounting surface portions, and its opening end is arranged in the vicinity of the opening. Two tubular members, and two covering members that cover respective end portions of the both tubular members and peripheral portions of the respective openings to form a flow path between the both open ends and the through hole. A pipe route changing unit consisting of. 2. The shape of the end portion of the tubular member is a straight line portion that forms the flat surface portion, and two straight line portions that linearly rise from both ends of the straight line portion in the vertical direction with substantially the same width.
The pipe path changing portion according to claim 1, wherein the pipe path changing portion is formed in a cross-sectional shape including an arc portion that connects the ends of two straight portions in an arc. 3. The shape of the end portion of the tubular member is a straight line portion that forms the flat surface portion, two straight line portions that linearly rise from both ends of the straight line portion in a direction in which the width is increased, and the two straight line portions. The pipe path changing portion according to claim 1, wherein the pipe path changing portion is formed in a cross-sectional shape including an arc portion that connects the ends of the straight portions in an arc. 4. The pipe path changing portion according to claim 1, wherein the abutting portions of the substrate, the tubular member and the cover plate are brazed and integrally fixed. 5. The pipe path changing unit according to claim 1, wherein the tubular members are attached to the substrate so that the tubular members are parallel to each other. 6. The tubular member according to claim 1, wherein the two tubular members are attached to the substrate so that a projection plane of the substrate passing through each axis toward a pipe attachment surface of the substrate forms a predetermined angle. The section for changing the pipe route. 7. The substrate is provided between two plate-shaped members each having a tube mounting surface to which a tubular member is mounted, and between the two plate-shaped members, and between the two tubular members. The pipe path changing unit according to any one of claims 1 to 6, comprising a vibration insulating material for insulating vibration. 8. The substrate is provided between two plate-shaped members each having a tube mounting surface to which a tubular member is mounted, and the two plate-shaped members. The pipe path changing unit according to any one of claims 1 to 6, comprising a spacer member to be adjusted. 9. The pipe path changing unit according to claim 1, wherein the substrate has a disc shape.