JP2604788Y2 - Oil cooler - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil cooler formed by stacking a plurality of plate members.

[0002]

2. Description of the Related Art As an oil cooler formed by laminating a plurality of plate members, for example, those disclosed in FIGS. 5 to 8 are known.

FIG. 5 is a plan view of this type of oil cooler, FIG. 6 is a sectional view taken along the line III-III of FIG. 5, and FIG. 7 is an exploded perspective view of the oil cooler shown in FIG. The first and second plates 3 and 5 made of aluminum are alternately laminated, and the upper part of the core 1 is provided with an upper tank 7 and a lower casing 9 made of aluminum for an inlet tank 11 and an outlet for cooling water. A tank 13 is formed,
Two cooling water passage holes 15 provided in the first plate 3 open to the inlet tank 11 and the outlet tank 13, respectively.

As shown in FIG. 7, through holes 17 and 19 are formed in the center of the upper casing 7 and the lower casing 9, and one of two oil passage holes 21 provided in the first plate 3 is formed. A communicating through hole 22 is formed in the lower casing 9, and the other oil passage hole 2 of the first plate 3 is formed.
1 is closed by a lower casing 9. The cooling water inlet pipe 23 and the cooling water outlet pipe 25 are coaxially inserted into the upper casing 7 at 180 ° intervals, and each of the cooling water inlet pipe 23 and the cooling water outlet pipe 25 is inserted. The side ends 23a and 25a open to the inlet tank 11 and the outlet tank 13, respectively.

On the other hand, an aluminum lower plate 27, a reinforcing plate 29, and a mounting plate 31 are sequentially arranged below the core portion 1, and through holes 33, 3 are formed at the centers of the plates 27, 29, 31.
5 and 37 are formed coaxially with the through holes 17 and 19.

[0006] Two oil passage holes 2 provided in the second plate 5 are provided beside these through holes 33, 35, 37.
1 is formed with an oil inflow hole 39 which is open on one side, and the other oil passage hole 21 of the second plate 5 is connected to the lower plate 2.
It is closed at 7. Further, the cooling water passage holes 15, 15 on the second plate 5 side are also closed by the lower plate 27, and a packing 41 is attached to a lower portion of the attachment plate 31.

Further, through holes 43 and 45 are formed in the center of the first plate 3 and the second plate 5 forming the core portion 1, and the through holes 43 and 45 are used to reinforce the core portion made of aluminum. A tube 47 is inserted. As shown in FIG. 8, an oil return pipe 51 formed of a stud bolt and fixed to a bracket 49 of the engine to form an oil outflow passage is inserted through the core part reinforcement pipe 47. Screw part 5 formed on the upper part of
The core part 1 is fixed to the bracket 49 by screwing the nut 55 to the bracket 3.

By the way, the first plate 3 and the second plate 5 are formed with four through holes at an interval of 90 ° from the center. The passage hole 15 is formed, and another opposed through hole is formed as the oil passage hole 21.

[0009] Then, as shown in FIG.
A cylindrical portion 5 is provided on the outer peripheral edge and the through-hole edge of the plate body 3a.
7 and 59 are integrally formed, and the first plate 3 is provided on the outer peripheral edge and the through hole edge of the plate main body 5a of the second plate 5.
Projecting portions 61 and 63 projecting toward the plate body 3a are integrally formed. Then, as shown in FIGS. 6 and 7, the outsides of the protruding portions 61 and 63 of the second plate 5 are brazed to the inside of the tubular portions 57 and 59 of the first plate 3, and the inside of the first plate 3 is A cooling water passage 65 is formed between the second plate 5 and the inside of the second plate 5, and an oil passage is formed between the outside of the second plate 5, the outside of the first plate 3, and the inside of the cylindrical portions 57 and 59 of the first plate 3. 67 are formed.

As shown in FIG. 7, the cylindrical portion 57 of the first plate 3 has a large-diameter portion 69 at the opening end and a small-diameter portion 71 at the plate body 3a. The large diameter portion 69 of one plate 3 is connected to the adjacent lower first plate 3
The second plate 5 is arranged between the first plates 3 by being brazed to the small diameter portion 71 of the first plate 3 in a fitted state.

In the oil cooler, a non-corrosive flux is applied to each component in advance and dried, and then the second plate 5 projects from the cylindrical portions 57 and 59 of the first plate 3. Parts 61 and 63 are fitted, and the first plate 3
The large diameter portion 69 is fitted to the small diameter portion 71 of the other first plate 3, and the core portion reinforcing tube 47 is inserted into the through holes 43, 45 at the centers of the plates 3, 5 to form the core portion 1. Then, upper and lower casings 7, 9 and lower plate 27, reinforcing plate 29, mounting plate 3
1 by heating them in a furnace and brazing the parts.

In the oil cooler, the cooling water flows from the cooling water inlet pipe 23 into the cooling water inlet tank 11 and then passes through the cooling water passage holes 15 of the first plate 3 and the second plate 5 to be cooled. After filling the water passage 65, the heat is exchanged with the oil in the oil passage 67 and flows out of the cooling water outlet pipe 25 on the outlet tank 13 side.

On the other hand, as shown in FIG. 8, oil flows from the engine-side oil inlet passage 73 into the core portion 1 through the oil inflow hole 39 at the lower portion of the core portion 1, and flows through the oil passage holes 21. After passing through and filling the oil passage 67, heat exchange with the cooling water in the cooling water passage 65 flows into the oil outlet tank 75, and thereafter, the oil is purified by the oil filter 77 arranged above the oil outlet tank 75. , And flows out from the oil outlet passage 79 to the engine via the oil return pipe 51.

[0014]

However, in the conventional oil cooler, since the oil filter 77 is provided above the oil outlet tank 75, the cooling water inlet pipe 23 and the cooling water outlet pipe 25 are connected to the oil cooler. The structure that projects to the upper surface of the outlet tank 75 cannot be adopted, and the cooling water inlet pipe 23 and the cooling water outlet pipe 25
Tank 11 and outlet tank 13 located on the side wall
Have to be inserted into

For this reason, the height dimension of the oil outlet tank 75 must secure the diameters of the cooling water inlet pipe 23 and the cooling water outlet pipe 25, and a large space is required. Thus, for example, as shown in FIG. 9 of the contents of Japanese Utility Model Application Laid-Open No. 59-192610, a structure may be adopted in which the cooling water introduction pipe 81 and the cooling water discharge pipe 83 project from the upper surface of the oil tank 85. In this case, it is necessary to provide a condition that the oil filter is not mounted on the upper surface of the oil tank 85. Therefore, in the above-mentioned conventional example, since the oil filter 77 is mounted, it is difficult to make the cooling water inlet pipe 23 and the cooling water outlet pipe 25 project from the upper surface of the oil outlet tank 75.

The present invention has been devised in view of such circumstances, and even in a structure in which an oil filter is mounted, a cooling water introduction pipe and a cooling water discharge pipe are projected from an upper surface of an oil tank. An object of the present invention is to provide an oil cooler capable of strengthening a mounting structure.

[0017]

According to the present invention, a plurality of plates having a through hole formed in the center are alternately stacked, and a cooling water passage and an oil passage are interposed between the plates. a core portion formed by alternately forming, is placed on top of the core portion, and the oil tank which is formed in the same cross-sectional shape as the cross-sectional shape of the core portion, is disposed above the oil tank oil In an oil cooler having an oil filter communicating with the inside of the tank and through the opening hole thereof, and an oil return pipe inserted into the through hole and communicating with the oil filter , a central through hole is formed in the upper surface of the core portion.
Hole, oil outlet, cooling water inlet, cooling water outlet
The oil tank is disposed on the upper plate.
Is located on the inside and has an upper wall forming an annular path inside
An annular portion having an inner peripheral edge of an upper wall of the annular portion.
And a pair of core bulging portions and a pair of tank bulging portions whose cross-sectional shapes are located outside the edges of the cross-sectional shape of the oil filter are formed on the core portion and the oil tank, respectively. and, setting the two cooling water passage is positioned in the core protruding portion of the core portion only, the cooling water inlet pipe及
And the cooling water outlet pipe with the tank of the oil tank.
The upper wall in the bulge portion is vertically penetrated,
The two cooling water inlets and outlets of the cooling plate
Connected to the inlet end and outlet end of the water passage,
It is characterized by being fixed to a plate .

[0018]

In the present invention, the cooling water inlet pipe and the cooling water outlet pipe are vertically connected to the upper wall of the tank bulging portion of the oil tank, so that the cooling water inlet pipe and the cooling water outlet pipe stand on the upper wall of the oil tank. Even if it is installed, it does not interfere with the oil filter.

The cooling water inlet pipe and the cooling water outlet pipe are as follows:
There is freedom of mounting angle, the oil tank, respectively data
Since it is fixed to the upper wall of the link bulging portion and the upper plate of the upper surface of the core portion, it is supported at two places, and the mounting strength can be secured.

Further, the cooling water directly flows from the cooling water introduction pipe into the cooling water passage, fills the cooling water passage, exchanges heat with the oil in the oil passage, and is guided to the cooling water outlet pipe. leak.

On the other hand, the oil flows into the core from the engine side, fills the oil passage, exchanges heat with the cooling water in the cooling water passage, and flows into the oil tank from the outlet of the oil passage. After being guided by the oil filter and purified, it flows out to the oil return pipe.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. An oil cooler according to an embodiment of the present invention will be described with reference to FIGS.

In this embodiment, only parts different from the conventional example will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted. In the drawing, an oil cooler according to an embodiment of the present invention has a core 1 having the same structure as that of the conventional example. In the core part 1, a through hole 4 is provided at the center.
The first plate 3 and the second plate 5 on which the plates 3 and 45 are formed are alternately stacked, and a cooling water passage 65 and an oil passage 67 are formed between the plates 3 and 5 alternately.

A lower plate 101 made of aluminum is arranged below the core portion 1. A through hole 101A is formed at the center of the lower plate 101, and one side is located on the side of the through hole 101A. An oil inflow hole 101B communicating with an inlet 67A of the oil passage 67 is formed. Core part 1
The lower end of the other oil passage 67 is closed by a lower plate 101.

On the other hand, an upper plate 103 made of aluminum is disposed on the upper surface of the core portion 1. A through hole 103 A is formed in the center of the upper plate 103, and
A, the outlet 67 of the other oil passage 67
An oil outflow hole 105 communicating with B is formed. In addition, a cooling water inlet 107 and a cooling water flow
An outlet 109 is formed.

A pair of core bulges 111, 111 are formed in the core 1 so as to form a pair of ears 111A, 111A located outside the edge of the cross-sectional shape 77A of the oil filter 77. When viewed as a whole, the core section 1 has a rhombic cross-sectional shape. The two cooling water passages 65 are located at the core bulging portions 111 of the core portion 1.

An oil tank 113 is disposed on the upper plate 103. The oil tank 113
An annular path 119 is formed on the inside between the upper plate 103 and the upper wall.
It comprises an annular portion 115 having 115A. Then, in the oil tank 113 through its center hole 1
13A is formed, the annular portion 115 there is a radial end at a position that matches the position of the oil outflow holes 105 are formed, before
A plurality of opening holes 117 are provided on the inner wall surface of the annular portion 115.
Are formed . Oil tank 113 to the outlet 67B of OIL passage 67 is communicated.

The oil tank 113 is formed with tank bulging portions 121, 121.
Has a rhombus shape that overlaps with the cross-sectional shape of the core portion 1 as a whole.

The annular portion 115 of the oil tank 113
Oil filter 7 on the inner peripheral edge 115B of the upper wall 115A.
7 is placed. Cooling water inlet pipe 123 and cooling water guide
The outlet pipe 125 is connected to the tank bulging portion 1 of the oil tank 113.
21 through the upper wall 115A vertically.
Cooling water inlet 107 and cooling water outlet 109 of upper plate 103
Through the inlet ends 65A of the two cooling water passages 65, 65
And the upper wall 115A and the upper plate 1
03 .

Further, an oil return pipe 127 made of a stud bolt is inserted through the core part reinforcing pipe 47,
The oil return pipe 127 is provided in the through hole 1 of the oil tank 113.
13A, the through hole 43 of the first plate 3 and the through hole 45 of the second plate 5 of the core portion 1 are inserted and mounted, and the oil from the oil tank 113 is returned to the engine side. In addition, by screwing a nut 127B to a screw part 127A formed on the upper part of the oil return pipe 127,
The core unit 1 is fixed to a bracket (not shown).

In the oil cooler, the cooling water flows from the cooling water introduction pipe 123 through the inlet end 65A of the cooling water passage hole 1 of the first plate 3 and the second plate 5.
5, and after each cooling water passage 65 is filled, heat is exchanged with the oil in the oil passage 67, and the coolant passes through the outlet end 65B.
It flows out to the cooling water outlet pipe 125.

On the other hand, the oil flows from the engine-side oil inlet passage (not shown) into the core 1 via the inlet 67A of the oil passage 67. After the oil passes through the oil passage holes 21 and fills the oil passage 67, the oil is heat-exchanged with the cooling water in the cooling water passage 65, and
Flows into the annular passage 119 through the outlet 67B, and is washed by the oil filter 77 through each opening hole 117 of the oil tank 113, is guided from the oil filter 77 to the oil return pipe 127, and is connected to the oil return pipe 127. Then, the oil flows out from the oil outlet passage (not shown) to the engine side.

In this embodiment, the cooling water inlet pipe 123 and the cooling water outlet pipe 125 are connected to the oil tank 1.
13 and is connected by vertically penetrating the upper wall 115A of the tank bulging portion 121 .
Even if it stands on the upper wall 115A of the tank bulging portion 121, it does not interfere with the oil filter 77.

The cooling water inlet pipe 123 and the cooling water outlet pipe 125 are connected to the tank expansion of the oil tank 113 , respectively.
Since it is fixed to the upper wall 115A of the projecting portion 121 and the upper plate 103 arranged on the upper surface of the core portion 1, it is supported at two places.

According to the above configuration, even if the oil filter 77 is mounted on the upper part of the oil tank 113, the cooling water introduction pipe 123 and the cooling water discharge pipe 125
At the tank bulging portion 121 of the oil tank 113
Is connected vertically through the upper wall 115A , and does not interfere with the oil filter 77.
The cooling water inlet pipe 123 and the cooling water outlet pipe 125 can be erected on the upper wall 115A of the third tank bulging portion 121, and the hose can be routed to have a degree of freedom of the mounting angle.

Therefore, the cooling water inlet pipe 123 and the cooling water outlet pipe 125 are connected to the tank bulging portion 1 of the oil tank 113.
21 as well as the upper wall 115A of the annular portion 115 ,
The upper plate 103 can also be supported at two places. The number of places where the cooling water introduction pipe 123 and the cooling water discharge pipe 125 are supported can be increased, and the mounting strength thereof can be secured.

The cooling water introduction pipes 1 are provided at the inlet end 65A and the outlet end 65B of the two cooling water passages 65, 65, respectively.
23 and the cooling water outlet pipe 125 vertically penetrate and connect to the upper wall 115A of the tank bulging portion 121 of the oil tank 113, so that the cooling water inlet pipe 123 and the cooling water outlet pipe 125 themselves are used for the oil. The interior of the tank 113 is partitioned, so that a partition structure (corresponding to the inlet tank 11 and the outlet tank 13 in the lower casing 9 of the conventional example) for separating the oil inlet / outlet path and the cooling water inlet / outlet path becomes unnecessary, and the structure is simplified. Can be. As a result, the oil tank 1
13 suffices, and the complicated three-dimensional shell-shaped lower casing 9 in which the inlet tank 11 and the outlet tank 13 of the conventional example are formed becomes unnecessary, and the production can be facilitated.

Further, as described above, the oil tank 1
Since the cooling water introduction pipe 123 and the cooling water discharge pipe 125 can be erected on the upper wall 115A of the 13 tank bulging portion 121, the cooling water introduction pipe 123,
There is no need to attach the cooling water outlet pipe 125 to the side surface of the oil tank 113, and the height of the oil tank 113 can be reduced.

In this embodiment, the core 1 has
A pair of core bulges 111, 111 are formed so as to form a pair of ears 111A, 111A located outside the edge of the cross-sectional shape 77A of the oil filter 77, and the core 1 as a whole is formed. When viewed, the cross-sectional shape is a rhombus, but is not limited to a rhombus, and may be another shape such as an ellipse.

[0040]

As described above, according to the present invention, even if the oil filter is mounted on the upper part of the oil tank, the cooling water inlet pipe and the cooling water outlet pipe are provided in the oil tank tank. Since it is connected vertically through the upper wall of the bulging part , it does not interfere with the oil filter. It can be erected and can have a degree of freedom of the mounting angle.

Therefore, the cooling water inlet pipe and the cooling water outlet pipe can be supported not only by the upper wall of the tank swelling portion of the oil tank but also by the upper plate and supported at two places. As described above, the number of support points for the cooling water introduction pipe and the cooling water discharge pipe is increased, and the effect of securing the mounting strength is achieved.

[Brief description of the drawings]

FIG. 1 is an external view of an oil cooler according to an embodiment of the present invention.

FIG. 2 is an external view showing a flow of oil in the oil cooler.

FIG. 3 is a longitudinal sectional view taken along the line II of FIG. 1;

FIG. 4 is a longitudinal sectional view taken along the line II-II of FIG.

FIG. 5 is a plan view of a conventional oil cooler.

FIG. 6 is a longitudinal sectional view taken along the line III-III in FIG. 5;

FIG. 7 is an exploded perspective view of the oil cooler of FIG.

8 is a longitudinal sectional view showing a state where the oil cooler of FIG. 5 is attached to an engine.

FIG. 9 is a longitudinal sectional view showing another conventional oil cooler.

[Explanation of symbols]

Reference Signs List 1 core portion 3 first plate 5 second plate 43 through hole 45 through hole 65 cooling water passage 65A inlet end 65B outlet end 67 oil passage 67B outlet 77 oil filter 103 upper plate 111 core bulging portion 113 oil tank 115 annular portion 115A Upper wall 115B Inner peripheral edge 117 Opening hole 121 Tank bulging part 123 Cooling water inlet pipe 125 Cooling water outlet pipe 127 Oil return pipe

Claims (1)

(57) [Scope of request for utility model registration] A plurality of plates (3, 5) having through holes (43, 45) formed in the center are alternately stacked, and a cooling water passage (65) is formed between these plates (3, 5). the core portion of the oil passage (67) formed by alternately formed with (1), placed on top of the core portion (1), formed in the same cross-sectional shape as the cross-sectional shape of the core portion (1) oil An oil filter (77) disposed above the oil tank (113) and communicating with the inside of the oil tank (113) through an opening hole (117) thereof; 43, 45) and an oil return pipe (127) communicating with the oil filter (77) , a central through hole (103) is formed in the upper surface of the core (1).
A), oil outlet (105), cooling water inlet (10
7), the upper plate (10) on which the cooling water outlet (109) is formed.
3), and the oil tank (113) is provided with the upper plate (103).
To form an annular path (119) on the inside
An annular portion (115) having an upper wall (115A), and an inner peripheral edge of the upper wall (115A) of the annular portion (115).
The oil filter (77) is placed on the oil filter (115B), and the cross-sectional shape of the oil filter (77) is located outside the edge of the cross-sectional shape of the oil filter (77) in the core portion (1) and the oil tank (113). a pair of core swelling portion to (111)
And forming a pair of tank bulging portion (121), respectively, set by positioning the core bulging portion (111) of the core part two cooling water passages (65) (1) only, the cooling water inlet pipe ( 123) and the cooling water outlet pipe (1)
25) is the tank of the oil tank (113).
The upper wall (115A) in the bulging portion (121) is vertically
The cooling water inlet of the upper plate (103)
(107), two cooling water outlets via the cooling water outlet (109).
The inlet end (65A) and the outlet end (65
B), the upper wall (115A) and the upper plate (10
3) An oil cooler characterized by being fixed to