JPS5932851Y2 - Laminated heat exchanger - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stacked heat exchanger that exchanges heat between fluid and air, and is effective when used as an oil cooler for motorcycles, for example.

A conventional laminated heat exchanger has a side plate 4a as shown in FIG.
and one end angle 4 are integrally molded.

However, in such a configuration, it is very complicated to compensate for shrinkage in the vertical direction (d direction) when the heat exchanger is brazed together in the furnace.

That is, in the conventional heat exchanger, before the heat exchanger is transported into the furnace, a gap g that is expected to shrink in the furnace must be provided between the side plate 4a and the other adjustment angle 6. It was very difficult to set up the heat exchanger and to assemble the heat exchanger so that the gap was as set.

This shrinkage is caused by the brazing filler metal coated on the end angles and core unit melting in the furnace and flowing out.

The present invention was devised in view of the above points, and an object thereof is to provide a heat exchanger that is extremely easy to manufacture.

The present invention will be explained with reference to the embodiment shown in the figure below.
, 3, numeral 1 is a flat core unit press-molded to form a conduit section for the heat exchange medium;
Two sheets are stacked one on top of the other to form a heat exchange medium conduit section.

The core unit 1 is made of an aluminum material, and both or one side of the core unit 1 is coated with an aluminum alloy brazing material by coating or cladding.

1a is a tank portion provided in the core unit 1, and 2 is a cooling fin made of aluminum.

Further, reference numerals 4 and 5 indicate end angles provided at both ends of the core unit 1 and the cooling fins 2 in the stacking direction.
a, 5 a is a form of formality.

A bracket portion 5C for holding a heat exchanger is integrally formed on one end angle 5.

Of the end angles 4 and 5, the portion facing the side surface of the core unit 1 is burred, and the collar portion 4
b and 5b are formed to protrude from the core unit 1 side.

Note that the height l of these empty parts 4b and 5b is 1. l 2
Considering that the length in the vertical direction (d direction) decreases in the furnace during molding of the heat exchanger, the height 11 of one collar part (the collar part 4b, which is sometimes lower when assembled) is The height 12 of the other collar part (the collar part 5b, which is sometimes installed in the upper part) is smaller than this shrinkage amount g, and is larger than this shrinkage amount g.

Reference numeral 3 denotes a side plate made of aluminum, which is disposed on the side surface of the core unit 1 and the cooling fins 2, and serves to reinforce the laminated heat exchanger.

The upper and lower ends of the side plate 3 are bent, and holes 3a and 3b are formed in the bent portions to fit the collar portions 4b and 5b of the end angles 4 and 5, respectively.

Reference numeral 6.7 indicates a connection joint that is brazed to the end angle 4, to which the inlet and outlet vibes are connected, respectively.

The heat exchanger having the above structure is attached via a bracket part 5b to a position of the vehicle body where it is easily exposed to running wind, and the engine oil from the automobile (two-wheeled vehicle) engine is supplied to one tank part 1a through an oil pump and an inlet vibrator. After passing through the core unit 1, the other tank part 1
The engine oil is collected at a point a, and then circulated back to the automobile engine through the outlet vibrator.

That is, the heat exchanger having the above configuration exchanges heat between the outside air and the engine oil via the surface of the core unit 1 and the cooling fins 2 when the engine oil passes through the core unit 1, thereby cooling the engine oil. It has become.

Next, a method of manufacturing the heat exchanger having the above configuration will be explained.

First, an end angle 4 whose one side is coated with an aluminum alloy brazing material is installed, and then a cooling fin 2 is placed on the end angle 4, and two flat plates whose surfaces are also coated with an aluminum alloy brazing material are installed. The core units 1 are alternately stacked in several stages, and then the end angles 5 are disposed above the cooling fins 2 located at the top to form a cooling unit.

Thereafter, this cooling unit is semi-fixed with a baking jig 8, and the parts 1, 2, 4.5 are accurately aligned in the semi-fixed state.

Next, the side plate 3 will be installed on the side of the cooling unit. First, install the side plate 3 on the longer collar 5.
This is done by inserting one hole 3b of the side plate 3 (the one located above in the state shown in FIG. 4) into the hole 3b, and then inserting the other hole 3a into the shorter collar 4b.

Figure 4 shows this assembled state. The heat exchanger assembled in this way is carried into a vacuum furnace using a baking jig 8, where it is heated to about 600°C. Vacuum brazing is performed at high temperature, thus completing the assembly of the heat exchanger.

Here, in the heat exchanger of the present invention, the end angles 4, 5 and the side plate 3 are connected to the collar portions 4b, 5b and the holes 3a, 3b (7).
) Since it is securely held by fitting, the assembly condition is maintained in good condition before it is carried into the furnace, and the assembly work and the work of carrying it into the furnace can be performed extremely easily.

Moreover, in the heat exchanger of the present invention, the amount g by which the cooling unit shrinks during brazing can be well absorbed by inserting the collar portion 5b into the hole 3b of the side plate 3.
Therefore, the amount of shrinkage g during brazing can be managed very easily.

Although the above-mentioned embodiments are preferred embodiments of the present invention, the present invention should not be limited to this example, and there are various other embodiments.

That is, in the above example, collar portions 4b and 5b were formed to make a portion of the end angles 4 and 5 protrude toward the core unit 1 side, but instead of the collar portions 4b and 5b, the collar portions 4b and 5b are formed as shown in FIG. Of course, the convex portion 5d (4C) as shown may also be used.

Furthermore, a protrusion is formed on the side plate 3 side, and the end angle 4,
5 may be provided with a hole into which the protrusion of the side plate 3 is inserted.

Further, in the above example, the protrusions 4b and 5b are provided on the end angles 4 and 5 on both sides, and the protrusions 4b and 5b are connected to the holes 3 provided on both ends of the side plate 3.
a, 3b, but as shown in FIG. As for the other end angle 4, the same effect can be obtained even if the side plate 3 is simply placed on the end angle 4.

In the embodiment of FIG. 6, mounting brackets 4e and 5e are formed on both end angles 4.5.

Further, in the above example, the protrusions 4b and 5b provided on the end angles 4 and 5 were inserted into the holes 3a and 3b of the side plate 3, but
As shown in FIGS. 7 and 8, a locking groove 3d is provided in the side plate 3 in place of the holes 3a and 3b, and a protrusion 4 is provided in the locking groove 3d.
Of course, b and 5b may be inserted.

Furthermore, it goes without saying that the heat exchanger of the present invention can be widely used in addition to oil coolers for automobiles (motorcycles), and can also be used, for example, as an evaporator for air conditioners.

As explained above, in the heat exchanger of the present invention, at least one end angle and the side plate are connected and held by fitting with the protrusion or hole, so when assembling the heat exchanger, This has an excellent effect in that the cooling unit can be assembled before the side plate is assembled, and the assembly work efficiency is extremely improved.

Furthermore, in the heat exchanger of the present invention, the end angle can be moved a predetermined amount toward the core unit by fitting the protrusion into the hole, so even if the heat exchanger shrinks in the vertical direction, brazing Brazing has the excellent effect of being able to absorb a large amount of liquid well, and the workability of brazing is also extremely good.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional heat exchanger, Fig. 2 is a perspective view showing an embodiment of the heat exchanger of the present invention, and Fig. 3 is an A of Fig. 2.
4 is a front view showing the assembled state of the heat exchanger shown in FIG. FIG. 6 is a front view showing still another embodiment of the heat exchanger of the present invention. FIG. 7 is a sectional view showing a main part of still another embodiment of the heat exchanger of the present invention, and FIG. 8 is a plan view from the side of FIG. 7. 1... Core unit, 2... Cooling fin, 3... Side plate, 3a, 3b...
...Hole in side plate, 4,5...End angle, 4b
, 5b... Collar forming the protruding part of the end angle

Claims (1)

[Scope of utility model registration request] A core unit and a cooling fin that are alternately stacked, an end reel provided at both ends of the core unit and the cooling fin in the stacking direction, and a side plate provided on the side surface of the core unit and the cooling fin. , at least one of the end angles is provided with a protrusion or hole protruding toward the core unit at a position facing the side surface of the core unit and the cooling fin, and this end portion is provided on the side plate. A laminated heat exchanger characterized by having a locking part that fits into a protrusion or hole of an angle.