JP3077388B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger such as an oil cooler for cooling oil for lubricating a sliding portion of an engine using, for example, cooling water for cooling the engine.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 11 and 12, a plurality of forming plates 101 are vertically stacked to form an oil passage 102 and a cooling water passage 10.
There is known a tankless water-cooled oil cooler 100 (for example, Japanese Utility Model Publication No. 63-18735) which does not have a cooling water tank on the left and right side surfaces of the heat exchange section 104 formed with the heat exchanger 3. The oil cooler 100 takes out cooling water pipes 106 and 107 from a housing 105 attached to an upper portion of the heat exchange section 104 in a predetermined direction in which the cooling water pipes 106 and 107 have a predetermined angle θ. .

[0003]

However, in the conventional oil cooler 100, it is necessary to change the angle θ of the cooling water pipes 106 and 107 under a condition that there are many restrictions on mounting on an automobile or the like. If it is necessary to change the direction in which the cooling water pipes 106 and 107 are taken out of the housing 105, the
05 was newly established. Thereby, the oil cooler 10
Therefore, the number of types of the components of the oil cooler 100 was not so easy, and the component management of the components of the oil cooler 100 was not easy. SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat exchanger that does not require a new housing even if the direction in which fluid pipes are taken out of the housing changes.

[0004]

According to the present invention, there is provided a heat exchanging section having two inlets and outlets at one end of which a fluid enters and exits, a housing connected to one end of the heat exchanging section and covering the two ports. Two fluid pipes that are taken out of the housing at a predetermined angle and communicate with the heat exchange section via the two ports, respectively, and the housing is provided with one of the two ports. Technical means having a fitting portion on a center line, and one fluid pipe communicating with the heat exchange portion via the one inlet / outlet having a fitted portion rotatably fitted to the fitting portion. It was adopted.

[0005]

According to the present invention, when assembling two fluid pipes to the housing covering the two ports of the heat exchanging section, the two fluid pipes are formed in the fitting section formed on the center line of one of the ports of the housing. By rotating one of the fluid pipes with respect to the housing in a state where the fitted parts are fitted together, the two cooling water pipes can be taken out of the housing without newly installing components such as the housing. Can be changed in any direction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a heat exchanger according to the present invention will be described with reference to FIGS.
A description will be given based on the embodiment shown in FIG. FIGS. 1 to 7 show a first embodiment of the present invention, and FIGS. 1 and 2 show an oil cooler to which the present invention is applied. The oil cooler 1 is mounted between a traveling engine (not shown) and an oil filter (not shown) in an engine room (not shown) of the automobile. The oil cooler 1 has a base plate 2 fixed to the engine, a laminated heat exchange section 3 for cooling the oil by exchanging heat between cooling water for cooling the engine and oil for lubricating a sliding portion of the engine, The bracket 4 includes a bracket 4 connected to the oil filter side end of the replacement section 3, and cooling water pipes 5, 6 connected to the bracket 4.

[0007] The base plate 2 is made of a metal such as stainless steel or an aluminum alloy and is formed in an annular plate shape. The base plate 2 has an introduction hole (not shown) for introducing oil into the heat exchange unit 3.

The heat exchanging section 3 includes a pair of forming plates 7 and 8.
Are laminated. An end plate 9 is connected to an end (upper end) of the heat exchange unit 3 on the oil filter side.
An end plate 10 is connected to an end (lower end) of the heat exchange unit 3 on the engine side. A pair of forming plates 7 and 8
The end plates 9 and 10 are made of a metal such as stainless steel or an aluminum alloy, and are formed in an annular plate shape. A cooling water passage 11 through which cooling water flows vertically in the forming plate 7 is formed, and a cooling water hole 12 through which cooling water flows vertically in the forming plate 8. Are formed.

An oil passage 13 through which oil flows is formed between the pair of forming plates 7 and 8. Further, a cooling water passage 14 in which cooling water flows in a U-shape in the horizontal direction is formed between the adjacent forming plates 8 and 7. The end plate 9 has an inlet 9 a as an inlet and outlet for introducing cooling water into the cooling water passage 11, and an outlet 9 as an inlet and outlet for discharging cooling water from the cooling water passage 11.
b, and an outlet (not shown) through which oil flows out from the oil passage 13 toward the oil filter.
The end plate 10 is formed with a closing portion 10a for closing portions corresponding to the cooling water passages 11 and 14, and an inlet (not shown) for allowing oil to flow into the oil passage 13 toward the oil filter.

The bracket 4 is a housing of the present invention, and is made of a metal such as stainless steel or an aluminum alloy, and is formed in an annular plate shape. This bracket 4
As shown in FIG. 3 and FIG.
Tank chamber 1 communicating with the oil chamber 15 communicating with the cooling water passages 11 and 14 through the inlet 9a and the outlet 9b.
6, 17 and a partition wall 18 for partitioning the oil chamber 15 and the tank chambers 16 and 17, respectively, and a boss 19 through which a union (not shown) for attaching the oil cooler 1 to the engine is formed. . In addition, on the inner periphery of the boss 19, three positioning grooves 19a into which an assembling jig (not shown) is fitted when assembling the oil cooler 1 are provided.
It is formed in places.

The side surfaces of the tank chambers 16 and 17 are formed with openings 16a and 17a for taking out the cooling water pipes 5 and 6, respectively. The tank chamber 16 has an inlet 9 opposed to the inlet 9a.
The ceiling wall 20 that covers the outlet 9a is formed in the tank chamber 17 so as to face the outlet 9b and cover the outlet 9b. Circular concave portions 22 and 23 into which the two cooling water pipes 5 and 6 are fitted respectively are formed on the inner wall surfaces of the ceiling walls 20 and 21. Recess 22,
Reference numeral 23 denotes a fitting portion of the present invention, which is formed so as to extend in the center line direction of the inlet 9a and the outlet 9b. The oil chamber 15 is located between the partition wall 18 and the boss 19.
There are formed five oil discharge holes 24 for discharging oil from the oil filter to the oil filter side.

The cooling water pipes 5, 6 are connected to joints 25, 26, which are made of metal such as stainless steel or aluminum alloy and formed in a substantially tubular shape, by welding or the like. As shown in FIGS. 5 and 6, the joints 25 and 26 have cooling water passages 27 and 28 through which the cooling water flows. These joints 25 and 26
At one end, the inside of the tank chambers 16 and 17 of the bracket 4, that is, the oil filter side end of the heat exchange section 3 and the bracket 4
Insertion portions 29 and 30 inserted between the tank chambers 16 and 17 and the ceiling walls 20 and 21 are provided.

At the lower ends of the insertion portions 29, 30, communication holes 31, 32, which communicate with the cooling water passage 11, at positions corresponding to the cooling water passage 11, are formed. Also, the insertion portions 29, 3
0, the joint 25 to the bracket 4 and 2
At the time of assembling 6, the ceiling walls 20 of the tank chambers 16 and 17
Circular convex portions 33, 3 as fitted portions to be rotatably fitted into concave portions 22, 23 formed in 21, respectively.
4 are formed.

The other ends of the joints 25 and 26 have inner circumferential grooves 35 and 3 for connecting the cooling water pipes 5 and 6, respectively.
6 are formed. Inner diameter of connecting parts 37, 38 (diameter of inner circumferential grooves 35, 36)
phi ₁ corresponds to the outer diameter phi ₂ of the cooling water pipes 5 and 6,
The diameter is larger than the outer diameter of the cylindrical portions 39, 40 adjacent to the connecting portions 37, 38. The other ends of the joints 25, 26 are provided adjacent to the inner circumferential grooves 35, 36, respectively.
Inner circumferential grooves 41 and 42 having an inner diameter smaller than 6 are also formed.

The cooling water pipes 5 and 6 are fluid pipes according to the present invention, and are made of a metal such as stainless steel or aluminum alloy and formed in a substantially cylindrical shape. The cooling water passages 43 and 44 for supplying and discharging the cooling water to and from the exchange unit 3 are provided. One end of each of the cooling water pipes 5 and 6 has a joint 2 as shown in FIG.
As tight manner fitted to the inner peripheral groove 35, 36 of 5,26, i.e., the cylindrical portion 45, 46 such that the diameter phi ₁ of the same outer diameter phi ₂ of the inner circumferential grooves 35 and 36 formed Have been. The outer diameter φ ₂ of the cylindrical portions 45 and 46 is
The diameter is slightly smaller than the outer diameter of the flanges 47 and 48 provided adjacent to 46. The other ends of the cooling water pipes 5 and 6 are formed with large diameter portions 49 and 50 for connecting the ends of rubber tubes (not shown) through which the cooling water flows.

Next, a method of manufacturing the oil cooler 1 will be briefly described with reference to FIGS. A concave portion 22 formed on the inner wall surface of the ceiling wall 20, 21 of the bracket 4,
With the projections 33, 34 formed on the upper end sides of the insertion portions 29, 30 of the joints 25, 26 fitted in the insertion portion 23, the insertion portions of the joints 25, 26 are inserted into the tank chambers 16, 17 of the bracket 4. Insert 29 and 30. At this time,
The joints 25 and 26 are connected to the recesses 22 and 2 of the bracket 4.
3 can be rotated within a range of a predetermined angle θ ₁ (determined by the size of the openings 16 a and 17 a), but the joints 25 and 26 are connected to the two cooling water pipes 5 and 6 from the bracket 4. Is temporarily fixed to the bracket 4 at a position corresponding to the take-out direction.

On the other hand, a bracket in which joints 25 and 26 are temporarily fixed to the upper end of a laminated body in which the base plate 2 is laminated on the lower end of a heat exchange section 3 in which a pair of forming plates 7 and 8 and end plates 9 and 10 are laminated. After laminating 4,
The base plate 2, the heat exchange part 3, the bracket 4, and the joints 25 and 26 are joined by, for example, placing them in a furnace and brazing integrally. And
By connecting the cooling water pipes 5, 6 to the other ends of the joints 25, 26 by means such as welding, the oil cooler 1
Is manufactured.

As described above, before the oil cooler 1 is integrally brazed, the joints 25 and 26 are rotatable around the recesses 22 and 23 of the bracket 4, so that the bracket 4 must be newly installed. Instead, the direction in which the cooling water pipes 5, 6 are taken out of the tank chambers 16, 17 of the bracket 4 can be changed to any direction. Therefore,
Even if the take-out direction of the cooling water pipe 5, 6 from the tank chamber 16, 17 of the bracket 4 by reasons mounted on the automobile is changed within a predetermined angle theta _1, newly prepare different bracket shapes Eliminates the need. As a result, the number of types of components of the oil cooler 1 can be reduced, and component management can be easily performed.

8 and 9 show a second embodiment of the present invention. FIG. 8 is a view showing a cooling water pipe, and FIG. 9 is a view showing a joint and a cooling water pipe. In the cooling water pipe 5 of this embodiment, the cylindrical portion 51 has a smaller diameter than that of the first embodiment, but the flange 52 has the same outer diameter φ _{2 as} the inner peripheral groove 35 of the joint 25. Is formed. For this reason,
Even when the cooling water pipe 5 whose outer diameter is considerably smaller than that of the joint 25 is used, it is not necessary to change the shapes of the bracket 4 and the joint 25, and the types of components of the oil cooler 1 can be reduced.

FIG. 10 shows a third embodiment of the present invention.
It is a figure showing a cooler. In this example, the bracket
A slope 53 is formed on the ceiling wall 20 of the tank chamber 16 of
Sliding contact with the slope 53 at the upper end of the insertion portion 29 of the joint 25
A slope 54 is formed. Thus, the bracket
4 and the angle of the slope 54 of the joint 25 are changed.
The vertical angle of the cooling water pipe 5
Any angle θ _TwoCan be changed to

[Modification] In this embodiment, the cooling water pipe 5,
Although the joint 6 and the joints 25 and 26 are provided separately, they may be provided integrally. In addition, although the cooling water is used as the fluid, a fluid such as oil, refrigerant, or fuel may be used. In this embodiment, the recesses 22 and 23 are formed in both the ceiling wall 20 facing the inlet 9a of the heat exchange unit 3 and the ceiling wall 21 facing the outlet 9b.
However, a fitting portion such as a concave portion, a convex portion, or a hole may be formed only on one ceiling wall. In this case, the fitting portion is formed only in one of the cooling water pipes 5 and 6. In the present embodiment, the laminated heat exchanging unit 3 is used as the heat exchanging unit. However, another tube / fin type may be used.

[0022]

According to the present invention, even if the direction of taking out the cooling water pipe from the tank changes, it is not necessary to newly install parts such as a tank, so that the types of components of the heat exchanger can be reduced. This facilitates component management of the components of the heat exchanger.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an oil cooler according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the oil cooler according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a bracket according to the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view showing the joint according to the first embodiment of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a side view showing a cooling water pipe according to the first embodiment of the present invention.

FIG. 8 is a side view showing a cooling water pipe according to a second embodiment of the present invention.

FIG. 9 is a cross-sectional view showing an attachment state of a joint and a cooling water pipe according to a second embodiment of the present invention.

FIG. 10 is a sectional view showing a main part of an oil cooler according to a third embodiment of the present invention.

FIG. 11 is a sectional view showing a conventional oil cooler.

FIG. 12 is a plan view showing a conventional oil cooler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil cooler (heat exchanger) 3 Heat exchange part 4 Bracket (housing) 5 Cooling water piping (fluid piping) 6 Cooling water piping (fluid piping) 9a Inlet (inlet / outlet) 9b Outlet (inlet / outlet) 22 Recess (fitting) Part) 23 concave part (fitting part) 33 convex part (part to be fitted) 34 convex part (part to be fitted)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F01M 5/00 F01P 11/08

Claims (1)

(57) [Claims] 1. A heat exchange unit having two inlets and outlets through which fluid enters and exits at one end, a housing connected to one end of the heat exchange unit and covering the two inlets and outlets, and having a predetermined angle from the housing. And two fluid pipes respectively connected to the heat exchange section through the two ports, and the housing has a fitting portion on a center line of one of the two ports. The heat exchanger, wherein one of the fluid pipes communicating with the heat exchange unit via the one of the inlets and the outlets has a fitted portion that is rotatably fitted to the fitting portion.