JPH0989490A - Laminated type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce heat capacity of a socket and a socket mount part by a method wherein a tank part, to which a socket is mounted, is mounted so as to communicate with a header part and a socket for connecting a fluid passage pipe is fixed to the outer surface of the tank part so as to communicate with the interior of the tank part. SOLUTION: A body portion 13 of a tank part 12, to which a socket is mounted, is opened in left and right directions to form an opening on opposite sides thereof and the left end opening is covered with a left side cover 14 and the right end opening is covered with a right side cover 15. A wide side wall 13a below the body portion 13 is soldered to the top surface of an end 2a of a side plate 2 of a heat exchanger body 11 through a joint plate 16 connected to the cover 14. And an end 21 with small diameter of a socket 20 for connecting a fluid passage pipe is fitted into a through hole 25 of the cover 15 and welded thereto. And a through hole 24 is formed in the side wall 13a of the tank part 12 and the tank part 12 is allowed to communicate with a header 6 of the body 11 through the hole 24, a through hole 17 of the plate 16, and a through hole 18 of the end 2a of the side plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated heat exchanger used for, for example, an oil cooler and an aftercooler.

[0002]

2. Description of the Related Art Conventionally, for example, in an aluminum laminated heat exchanger used as an oil cooler, a fluid introduction or discharge pipe connection socket connected to a header portion is attached to a corner portion of the heat exchanger body. However, the conventional socket was manufactured by cutting a block made of aluminum extruded profile.

[0003]

However, since such a conventional socket has a large thickness, it has a large difference in heat capacity as compared with a thin plate which constitutes a heat exchanger, and therefore, in manufacturing the heat exchanger, There is a problem that brazing is very difficult to manage and defective products are likely to occur.

Further, in the conventional block-shaped socket,
The thick part of one end of this is a screw mounting seat,
Since this screw mounting seat is provided with screw holes, the opening direction of the screw holes is limited to either the front or rear direction, and when mounting on the machine body side of industrial machines or vehicle bodies, etc. Piping space may be required, and provisionally, a thick socket is provided on the side of the block-shaped socket to serve as a screw mounting seat. If an open screw hole is provided, the heat capacity of the socket will increase by the amount of the thick screw mounting seat, and the difference in the heat quantity ratio with the plate will increase. There was a problem that management became even more difficult.

An object of the present invention is to solve the above-mentioned problems of the prior art, to reduce the thickness of the socket and the socket mounting portion as a whole, and to reduce the heat capacity of the socket and the socket mounting portion of the heat exchanger body. It can be as small as a plate, the brazing can be easily controlled during the manufacturing of the heat exchanger, the number of defective products can be reduced, and the socket can be installed in the heat exchanger body very easily. And it can be mounted with sufficient mounting strength,
The socket can be mounted not only in the front-back direction of the heat exchanger body, but also in the state of protruding left or right or upward, so that it can be securely mounted on the machine body side of industrial machines or vehicle bodies without any problems. There is an attempt to provide a laminated heat exchanger.

[0006]

In order to achieve the above object, the present invention provides a body made of aluminum extruded profile and an opening at both ends of the body on the outer surface of the side plate of the heat exchanger body. A socket mounting tank part consisting of a cover made of a brazing sheet for covering is attached by brazing so as to communicate with the header part of the heat exchanger main body, and a socket for fluid circulation pipe connection is provided on the outer surface of the tank part. The gist is a laminated heat exchanger that is attached to the interior of the section by brazing.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings.

In this specification, the front and rear and the left and right are based on FIG. 2, the front means the front side of the drawing sheet in FIG. 2, the rear means the back side, the left means the left side and the right side means the same. The right side.

In the laminated heat exchanger, although not shown, the fluid flow pipe connecting sockets are attached to two corners of the heat exchanger main body and to four corners. There is.

Each socket has a screw hole for connecting a pipe, and oil introduction and discharge pipes are connected to the sockets on the upper left and right sides of the main body of the heat exchanger. When the sockets are at the four corners of the heat exchanger body, the remaining two sockets on the lower left and right sides of the heat exchanger body are for drain.

The laminated heat exchanger according to the present invention has the following three embodiments.

First, in the first embodiment, as shown in FIGS. 1 to 3, the body portion (13) of the tank portion (12) for socket mounting is arranged in a so-called sideways state. Department (1
3) is opened in the left-right direction, the left end opening of the body (13) is a left side lid (1) made of aluminum brazing sheet.
4), and the right end opening of the body (13) is closed by the right side lid (15) made of aluminum brazing sheet.

The wide side wall (13) below the body (13)
a) is the end of the side plate (2) of the heat exchanger body (11)
It is brazed to the upper surface of (2a) via a joining plate portion (16) made of an aluminum brazing sheet, which is continuous with the left lid (14).

Then, the through hole (2
5), aluminum socket for fluid flow pipe connection
The small-diameter end (21) of (20) is fitted and brazed,
The socket (20) is attached to the right side lid (15) so as to project rightward.

A through hole (24) is formed in a wide side wall portion (13a) below the socket mounting tank portion (12), and the tank portion (12) is provided with the through hole (24) and a joint plate. Through the through hole (17) formed in the part (16) and the through hole (18) formed in the end part (2a) of the side plate (2) to the header part (6) of the heat exchanger body (11). It is in communication.

Further, as shown in FIGS. 1 and 3, when the lid (15) is attached to the right end opening of the body portion (13) of the tank portion (12) for socket mounting, the lid (15) is positioned for positioning. For example, the lid positioning grooves (23) and (23) are horizontally provided in the narrow front and rear wall portions (13c) and (13d) of the body portion (13), while the front and rear end portions of the right lid (15) are provided. When the protrusion (26) (26) for positioning is provided on the lid and the lid (15) is put on the right end opening of the body (13), the lid (15)
Bend the protrusions (26) (26) on the side and groove (23) (2
It is preferable that the right lid (15) is positioned with respect to the body portion (13) by fitting it into the body (13).

According to the laminated heat exchanger (10), since the wall thickness of the socket mounting tank portion (12) and the socket (20) can be made thin as a whole, these and the plates (1) and (2) are The difference in heat capacity is reduced, good brazing can be obtained by batch brazing, the jointability is improved, and the socket (2
0) can be easily attached.

Next, in the second embodiment, FIGS.
As shown in, the body part (13) of the tank part for socket mounting (12)
Are arranged in a so-called upright state, and the body (13) is opened vertically, and the upper end opening of the body (13) is an upper lid (made of aluminum brazing sheet). The lower end opening of the body (13) is closed by a lower lid (14) made of an aluminum brazing sheet.

The tank mounting portion (12) has a lower lid (14) brazed to the upper surface of the end portion (2a) of the side plate (2) of the heat exchanger body (11). Is attached to the heat exchanger body (11).

Further, two through-holes (19) are formed in the lower lid (14) of the socket mounting tank (12) so that the tank (12)
The end of the through hole (19) and side plate (2).
Heat exchanger body (11) through through hole (18) opened in (2a)
It is connected to the header part (6) of the.

Also, as shown in FIGS. 5 and 6, the body portion (13)
Through hole (25) in the wide side wall (13a) on the right side of the
The small diameter end (2) of the socket (20) for connecting the fluid flow pipe.
1) is fitted, the small-diameter end portion (21) of the socket (20) is fitted with a ring (27) made of a brazing sheet, and the right side wall portion (13a) of the body portion (13). The socket (20) has a ring
It is brazed via (27) and is attached to the right protruding shape.

Further, as shown in FIGS. 4 and 6, when the lid (15) is attached to the upper end opening of the body portion (13) of the tank portion (12) for socket attachment, the lid (15) is positioned for positioning. For example, the lid positioning grooves (23) and (23) are horizontally provided in the narrow front and rear wall portions (13c) and (13d) of the body portion (13), while the front and rear end portions of the upper lid (15) are provided. When the projections (26) (26) for positioning are provided on the lid and the lid (15) is put on the upper end opening of the body (13), the lid (15)
Bend the protrusions (26) (26) on the side and groove (23) (2
It is preferable that the upper lid (15) is positioned with respect to the body portion (13) by being fitted into the body portion (3).

Further, in the third embodiment, FIGS.
As shown in FIG. 5, the same as in the case of the second embodiment described above, except that the through hole (25) formed in the upper lid (15) is different.
A socket (2
The small-diameter end portion (21) of (0) is fitted and brazed, and the socket (20) is attached to the upper lid (15) so as to project upward.

The socket mounting tank portion (12) is
This lower lid (14) is brazed to the upper surface of the end (2a) of the side plate (2) of the heat exchanger body (11),
Attached to the heat exchanger body (11), but with the lower lid (14)
A wide side wall (13) on the left side of the body (13) is connected through an aluminum brazing sheet joint plate (16) connected to
a) and the end of the side plate (2) of the heat exchanger body (11)
The side of (2a) is brazed.

[0025]

Embodiments of the present invention will now be described with reference to the drawings.

1 to 3 showing the first embodiment of the present invention, for example, a laminated heat exchanger (10) used as an oil cooler is made of aluminum (including aluminum alloy), and its heat The exchanger body (11) has a recess (3) for forming an oil flow path on one side, and a header forming a deeper oil flow hole (8) at both ends of the recess (3) in the bottom wall (7). Intermediate plates (1) made of a required number of substantially rectangular aluminum double-sided brazing sheets, each having recesses (4) (4), made recesses (3) (3) face each other. Bottom wall of recesses (4) (4) for forming header
(7) (7) Side plates (2) (2) made of aluminum that are stacked in a vertical direction in a state where they are butted against each other, and face the intermediate plates (1) (1) on both the top and bottom sides.
By overlapping and joining (only the upper side is shown), parallel flat pipe parts (5) and a pair of header parts (6) (6) connected to each flat pipe part (5) are formed. It will be.

Adjacent flat tubes (5) of the heat exchanger body (11)
(5) Middle plate between the comrades and on both the upper and lower sides (1) (1)
Corrugated fins (9) are interposed between the side plates (2) and (2).

Although not shown, the oil flow pipe connecting socket (20) is attached to two corners of the heat exchanger body (11) and is attached to four corners of the heat exchanger body (11). There is.

1 to 3, the laminated heat exchanger (1
(0) shows the socket (20) attached to the upper right corner, and the other socket attachment parts have the same configuration,
Illustration is omitted.

Each socket (20) has a screw hole (22) for connecting a pipe.
An oil distribution pipe, that is, an oil introduction and discharge pipe (not shown) is connected to the sockets (20) (20) on the upper left and right sides of the heat exchanger body (11).

In the first embodiment, the body portion (13) made of extruded aluminum of the tank portion (12) for mounting the socket is arranged in a so-called sideways state. Torso
(13) is opened in the left-right direction, the left end opening of the body (13) is closed by a left lid (14) made of aluminum double-sided brazing sheet, the right end opening of the body (13) Is closed by a right side lid (15) made of aluminum single-sided brazing sheet.

The wide side wall (13
a) is the end of the side plate (2) of the heat exchanger body (11)
It is brazed to the upper surface of (2a) via a joining plate portion (16) made of an aluminum double-sided brazing sheet and connected to the left lid (14) in a substantially L shape.

Then, the through hole (2
The small diameter end (21) of the aluminum oil distribution pipe connection socket (20) is fitted into the 5) and brazed, and the socket (20) is projected to the right on the right side lid (15). Is attached to.

Further, a through hole (24) is formed in a wide side wall portion (13a) below the socket mounting tank portion (12), and the tank portion (12) is provided with the through hole (24) and a joint plate. Through the through hole (17) formed in the part (16) and the through hole (18) formed in the end part (2a) of the side plate (2) to the header part (6) of the heat exchanger body (11). It is in communication.

As shown in FIGS. 1 and 3, the narrow front and rear wall portions (13c) of the body portion (13) of the tank portion (12) for mounting sockets.
The lid positioning groove (23) (23) is horizontally provided in (13d), and the positioning protrusions (26) and (26) are provided at both front and rear ends of the right lid (15). Before brazing the mounting tank (12), the positioning projections (26) (26) at the front and rear ends of the right lid (15) are bent to the left, and these projections (26) (26) Is the groove (2) on the trunk (13) side of the tank (12).
3) It is fitted in the (23), and thereby the right lid (15) is reliably positioned with respect to the body (13).

The laminated heat exchanger (10) is manufactured by combining all the heat exchanger constituent members including the socket (20) for pipe connection and then collectively brazing by, for example, a vacuum brazing method. It is what is done.

In the laminated heat exchanger (10), for example, the socket (20) on the upper left side of the heat exchanger body (11).
The oil introduced from the oil introduction pipe (not shown) connected to the header section (6) through the tank section (12) for socket mounting flows into the flat tube section (5).

The oil flows inside each flat tube portion (5),
Further, from the header part (6) on the other right side to the socket (20) via the tank part (12) for socket mounting, the socket (20)
It is discharged from an oil discharge pipe (not shown) connected to.

On the other hand, the flat tube portion (5) of the laminated heat exchanger (10)
Air flows through the gap between the comrades and between the upper and lower outer middle plates (1) and side plates (2) where the corrugated fins (9) exist, and the walls of the middle plate (1) and the corrugated fins ( The oil and air can be efficiently heat-exchanged via 9).

According to the laminated heat exchanger (10), the wall thickness of the socket mounting tank portion (12) and the socket (20) can be made thin as a whole, so that these and the plate (1) (2) are The difference in heat capacity is reduced, and when manufacturing the heat exchanger (10),
Brazing is easy to manage, good brazing can be obtained by batch brazing, the joining property can be improved, and the number of defective products can be reduced, and the socket (20) can be connected to the tank (12).
It was possible to attach the heat exchanger main body (11) very easily and with sufficient attachment strength via the.

Since the socket (20) can be attached to the heat exchanger main body (11) so as to project rightward,
The heat exchanger (10) can be reliably mounted on the machine body side of an industrial machine or a vehicle body without any trouble, and no extra piping space is required.

Next, FIGS. 4 to 6 show a second embodiment of the present invention.

In the figure, in the laminated heat exchanger (10) according to the present invention, the barrel portion (13) of the socket mounting tank portion (12) is arranged in a so-called upright state.
(13) is opened in the vertical direction, the upper end opening of the body (13) is closed by the upper lid (15) made of aluminum single-sided brazing sheet, the lower end opening of the body (13) Part is a bottom lid made of aluminum double-sided brazing sheet (14)
Is blocked by.

In the socket mounting tank part (12), the lower lid (14) thereof is brazed to the upper surface of the end part (2a) of the side plate (2) of the heat exchanger body (11). Is attached to the heat exchanger body (11).

Further, two through holes (19) are formed in the lower lid (14) of the socket mounting tank part (12), and the tank part (12)
The end of the through hole (19) and side plate (2).
Heat exchanger body (11) through through hole (18) opened in (2a)
It is connected to the header part (6) of the.

Also, as shown in FIGS. 5 and 6, the body portion (13)
Through hole (25) in the wide side wall (13a) on the right side of the
The small diameter end of the socket (20) for connecting the oil distribution pipe.
(21) is fitted and the small-diameter end (21) of the socket (20)
A ring (27) made of aluminum double-sided brazing sheet is fitted on the socket, and the socket (20) is brazed to the right side wall (13a) of the body (13) via the ring (27). It is attached so as to project to the right.

Further, as shown in FIGS. 4 and 6, the narrow front and rear wall portions (13c) of the body portion (13) of the tank portion (12) for socket mounting.
The lid positioning groove (23) (23) is provided in the vertical direction (13d), and the positioning protrusions (26) (26) are provided at both front and rear ends of the upper lid (15). Before brazing the mounting tank part (12), the positioning projections (26) (26) at the front and rear ends of the upper lid (15) are bent downward, and these projections (26) (26) are Groove on the body (13) side of the tank (12) (2
3) The upper lid (15) is fitted into the body (23) so that the upper lid (15) is reliably positioned with respect to the body (13).

Since the other points of the second embodiment are the same as those of the first embodiment, the same components are designated by the same reference numerals in the drawings.

7 to 9 show the third embodiment of the present invention.

In the figure, the laminated heat exchanger (10) according to the present invention is almost the same as that of the second embodiment, except that the through hole formed in the upper lid (15) is different. (twenty five)
A socket for connecting the oil distribution pipe made of aluminum
The small-diameter end (21) of (20) is fitted and brazed,
The socket (20) is attached to the upper lid (15) so as to project upward.

The socket mounting tank portion (12) is
This lower lid (14) is brazed to the upper surface of the end (2a) of the side plate (2) of the heat exchanger body (11),
Attached to the heat exchanger body (11), but with the lower lid (14)
And a wide side wall part (13a) on the left side of the body part (13) and the side of the heat exchanger body (11) via a joining plate part (16) made of an aluminum double-sided brazing sheet that is connected in a substantially L shape. plate
The side surface of the end (2a) of (2) is brazed.

As shown in FIGS. 7 and 9, this third
In the embodiment, as in the case of the second embodiment, the narrow front and rear wall portions of the body portion (13) of the tank portion (12) for socket mounting are used.
(13c) (13d) are provided with lid positioning grooves (23) (23) in the vertical direction, and positioning protrusions (26) (26) are provided at both front and rear ends of the upper lid (15). Before brazing the socket mounting tank part (12), the positioning projections (26) (26) at the front and rear ends of the upper lid (15) are bent downward, and these projections (26) ( 26) is fitted into the groove portions (23) (23) on the body portion (13) side of the tank portion (12), and the upper lid (15) is positioned with respect to the body portion (13).

According to the laminated heat exchanger (10) of the third embodiment, the socket (20) can be attached to the heat exchanger main body (11) so as to project upward, so that the industrial machine or The heat exchanger (10) can be reliably mounted on the machine body side of the vehicle body or the like without any trouble, and no extra piping space was required.

As shown in the modified example of FIG. 10, in addition to the case of the third embodiment, the tank portion for socket mounting (1
Positioning projections (28) and (28) are provided vertically on the narrow front and rear walls (13c) (13d) of the body (13) of (2), respectively, and the upper lid
Before the brazing of the socket mounting tank part (12), lid positioning recesses (29) and (29) between the two protrusions (30) and (30) are provided at both front and rear ends of the (15). In the positioning recesses (29) (29) at the front and rear ends of the upper lid (15), the body (1
The upper ends of the positioning protrusions (28) (28) on the 3) side may be fitted so that the upper lid (15) is positioned with respect to the body (13).

The other points of the third embodiment and the modification are as follows.
Since it is the same as the case of the second embodiment, the same components are denoted by the same reference numerals in the drawings.

The laminated heat exchanger (10) according to the present invention can be used not only in the above oil cooler but also in other applications such as an aftercooler, a car / cooler evaporator and a radiator.

[0057]

As described above, in the laminated heat exchanger according to the present invention, the outer surface of the side plate of the heat exchanger body is brazed to cover the body made of aluminum extruded shape and the openings at both ends of the body. -The tank part for socket mounting consisting of a lid made of sheet is mounted by brazing so as to communicate with the header part of the heat exchanger body, and the socket for connecting the fluid circulation pipe is attached to the outer surface of the tank part. Since it is installed so as to communicate with the inside and by brazing, the wall thickness of the socket and the tank part for socket mounting can be reduced as a whole, and the heat capacity of the socket and the tank part for socket mounting can be reduced. The number of plates can be reduced to the same level as that of plates, the brazing can be easily controlled during the production of the heat exchanger, and the number of defective products can be reduced.

Moreover, the socket can be attached to the heat exchanger main body very easily and with sufficient mounting strength, and the socket is projected not only in the front-back direction of the heat exchanger main body but also in the left or right direction or the upward direction. Therefore, it is possible to mount it on the machine body side such as the industrial machine or the vehicle body without any trouble, and it is possible to surely perform the mounting.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of a main part of a laminated heat exchanger showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing an enlarged main part of the heat exchanger.

FIG. 3 is an enlarged exploded perspective view of a main part of the heat exchanger.

FIG. 4 is an enlarged perspective view of an essential part of a laminated heat exchanger showing a second embodiment of the present invention.

FIG. 5 is a front view of the main part of the heat exchanger with an enlarged partial cutout.

FIG. 6 is an enlarged exploded perspective view of a main part of the heat exchanger.

FIG. 7 is an enlarged perspective view of essential parts of a laminated heat exchanger showing a third embodiment of the present invention.

FIG. 8 is a front view of the main part of the heat exchanger with an enlarged partial cutout.

FIG. 9 is an enlarged exploded perspective view of a main part of the heat exchanger.

FIG. 10 is an enlarged exploded perspective view of a main part of a laminated heat exchanger showing a modified example of the present invention.

[Explanation of symbols]

1 Intermediate Plate 2 Side Plate 3 Oil Flow Channel Forming Recess (Fluid Flow Channel Forming Recess) 4 Header Forming Recess 5 Flat Tube 6 Header 9 Corrugated Fin 10 Laminated Heat Exchanger 11 Heat Exchanger Main Body 12 Socket Tank part for mounting 13 Body part 14 Lid 15 Lid 20 Socket for oil distribution pipe connection (socket for fluid distribution pipe connection)

Claims (1)

[Claims] 1. The side plate (2) of the heat exchanger body (11)
On the outer surface of the body, the body (13) made of extruded aluminum and the body
A brazing sheet lid (1
The socket mounting tank part (12) consisting of (4) and (15) is attached by brazing so as to communicate with the header part (6) of the heat exchanger body (11), and is attached to the outer surface of the tank part (12). A laminated heat exchanger in which a socket (20) for connecting a fluid circulation pipe is attached to the inside of the tank portion (12) by brazing.