JP2542258Y2 - Oil cooler for vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-cooled oil cooler protruding from an outer surface of an engine block of a vehicle, and to a general-purpose one capable of freely changing a position of a cooling water mounting pipe according to various vehicles.

[0002]

2. Description of the Related Art As an example of a water-cooled oil cooler for a vehicle,
A doughnut-shaped casing is provided with a core of a laminated heat exchanger of substantially the same shape, and cooling water is circulated in each element constituting the core, and oil to be cooled is guided to the outer surface side of the element, An aluminum heat exchanger that exchanges heat between the two has already been proposed by the present applicant. In such a heat exchanger, the core is made of an aluminum material, and the outer periphery is formed by a base member made of an aluminum casting, a bowl-shaped member fitted to the base member, and a center pipe. And it was attached to the engine block via a hollow bolt, and the filter body was connected to the upper end of the hollow bolt.

[0003]

The doughnut-shaped aluminum oil cooler is adapted to the engine block of various vehicles and the surrounding structure thereof, and the mounting position of the cooling water introduction pipe of the base member made of aluminum casting. Had to be changed. In addition, it is necessary to change the position of the communication hole of the core according to the position of the mounting pipe, and it is necessary to design many parts for each different engine block, and there is a drawback that versatility is lacking.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a donut-type oil cooler which has a large degree of freedom in design and is highly versatile. That is, the oil cooler of the present invention has a plurality of elements 2 forming a flat annular flow path in which a pair of cooling water communication holes 1 and 1 are formed close to each other via the partition 1f. Then, the cooling water communication holes 1 of the plurality of elements 2 are connected and laminated to form the core 3. Next, there is provided an annular tank 6 in which a metal plate is formed in a relatively deep annular groove shape, and a pair of cooling water conducting ports are formed at appropriate positions on the outer periphery thereof so as to be separated from each other. At the same time, a pair of pipes 5 is protruded and fixed to the conduction port. Further, only one of the pair of cooling water communication holes 1 opened at one end in the stacking direction of the core 3 and one of the pipes 5 are communicated by the communication pipe 4 in the tank. The center pipe 7 has a pot-shaped casing 8 protruding from the inner surface side, and the opening edge thereof is joined to the peripheral edge of the annular tank 6.

Further, a peripheral wall at the center opening of the annular tank 6
An annular oil passage 9 is formed between the oil passage 9 and the center pipe 7. Also, the hollow bolt 14 penetrates through the center pipe 7,
One end of the hollow bolt 14 is screwed into the opening of the oil inlet of the engine block to fasten and fix the center pipe and the casing, and the other end is screwed and fastened to the center hole of a filter body having an oil filter therein. And
The oil that has flowed into the casing 8 from the oil passage 9 has a cylindrical gap 16 formed between the center pipe 7 and the core 3.
Therefore, it is configured such that the outer surface of each element flows radially outward. Here, the one pipe 5 and the communication pipe in the tank that communicates with the pipe 5 do not necessarily need to be formed of separate parts, and may be an integrated pipe.

[0006]

In FIG. 1, the oil 12 passes from the engine block 15 through the oil passage 9 and the cylindrical gap 16, and flows radially outward on the outer surface of each element 2 of the core 3, so that the oil filter
After passing through 19, it flows through the hollow bolt 14 and returns to the engine block 15. As shown in FIGS. 5 and 6, the cooling water 13 flows annularly from the one pipe 5 through the communication pipe 4 in the tank, and from the one cooling water communication hole 1 of each element 2 in the flat flow path. It enters the annular tank 6 through the other cooling water communication hole 1 and flows out through the other pipe 5. The other pipe 5 may be at the position of the solid line or the position of the chain line in FIG. Even if the pipe 5 is located at the position of the chain line, it is not necessary to change the shape of the element 2, the position of the cooling water communication hole 1, and the like. Therefore, it is possible to freely change the mounting position of the pipe 5 according to the mounting state of various vehicles.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view showing a use state of the oil cooler, FIG. 2 is a plan view showing a state in which a hollow bolt 14 is removed, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. FIG. 5 is a partial longitudinal sectional view taken along arrow B, FIG. 5 is a sectional view taken along line VV in FIG.
7 is a sectional view taken along the line VI-VI of FIG. 3, FIG. 7 is a sectional view taken along the line VII-VII of FIG. 3, and FIG. 8 is an exploded perspective view of the element 2 used in the present oil cooler. The oil cooler is made of aluminum (including an aluminum alloy), and includes a core 3, an annular tank 6 on which the core 3 is mounted, and a core 3.
8 and center pipe 7 that fit inside and outside of
Having. Further, there is provided a hollow bolt 14 for detachably screwing and fastening the entire oil cooler to the engine block 15.
The core 3 includes a pair of metal plates 1a and fins as shown in FIG.
With 10. The metal plate 1a has a plate shape formed in the shape of a flat donut. The metal plate 1a is provided with a flange at the hole edge and the outer peripheral edge of the center hole 1b.
f is provided on the inner surface side. Cooling water communication holes 1 are formed on both sides of the partition 1f, and a hole edge 1e of the cooling water communication hole 1 is formed.
A flange portion is formed at the bottom. The inner and outer surfaces of this metal plate 1a
Each is made of an aluminum plate coated with a brazing material. Then, the pair of metal plates 1a are stacked in opposite directions. At this time, the respective cooling water communication holes 1 are aligned.

Next, the fin 10 is connected to the center hole 1b of the metal plate 1a.
And a multi-entry fin having holes 10a and 10b, which are aligned with the cooling water communication holes 1. That is, it is formed in a waveform, and a number of rectangular holes are cut and formed in the side wall of the waveform. The fins 10 are interposed on the outer surfaces of the pair of metal plates 1a. A closing means is provided on the uppermost surface of such an element laminate so that the cooling water communication hole 1 is closed. Each component was integrally brazed and fixed in a high-temperature furnace. Such a core 3 is mounted on an annular tank 6 as shown in FIG. At this time, one cooling water communication hole 1 of the core 3 and one pipe 5 are connected to each other via the tank communication pipe 4. In addition, one pipe 5 and the communication pipe 4 in a tank can be integrally formed using a bent pipe. Next, the annular tank 6 is formed in a double cylindrical shape having a bottom surface,
A flange portion is provided at the opening edge. Further, the center opening of the annular tank 6 is substantially aligned with the center opening of the core 3. Such an annular tank 6 is manufactured by molding an aluminum plate having at least an inner surface coated with a brazing material by a press machine. Then, one end of a pair of pipes 5 penetrates at an appropriate position on the outer periphery of the annular tank 6 as shown in FIG. The pipe 5 may be a pipe having no brazing material. And
One end opening of one pipe 5 and one communication hole 1 of the core 3 are connected. The other of the pair of pipes 5 that does not have the in-tank communication pipe 4 is disposed at an appropriate position in the annular tank 6. That is, it is arranged at the position of the solid line or at the position of the chain line.

Next, on the lower surface of the annular tank 6, a base plate 17 made of an aluminum plate is provided. This base plate
A central opening is formed in 17 and an annular groove is formed on the outside thereof, and an O-ring 18 is fitted therein. At the same time, an oil inlet 12a is formed in the center side of the O-ring 18. The oil inlet 12a is located at a position matching the oil outlet of the engine block 15. The assembly of the laminated heat exchanger thus formed is performed by placing the annular tank 6 on the base plate 17.
While placing the core 3 on the annular tank 6,
The cooling water communication hole 1 and the pipe 5 are connected to the communication pipe 4 in the tank.
Connect with. Then, the center pipe 7 is disposed at the center, and the casing 8 is inserted into a high-temperature furnace with the casing 8 removed. Then, the brazing material previously coated on at least one of the parts is melted, and then solidified, whereby the whole is integrally brazed and fixed. Next, the casing 8 is fitted, and the lower end opening edge and the center opening at the upper end are joined to the parts that come into contact therewith to form an oil cooler assembly. Then, as shown in FIG.
The oil cooler is screwed and fastened to the engine block 15.

Further, a filter main body 13a containing an oil filter 19 is screwed to the upper end of the hollow bolt 14. The pair of pipes 5 and the water jacket of the engine are connected by a pair of connection hoses (not shown). Then, the cooling water 13 flowing from one pipe 5 flows through the inside of each element 2 via the communication pipe 4 in the tank as shown in FIG. 6 and flows out from the other pipe 5. The oil flows from the engine block through the oil passage 9 and the cylindrical gap 16 to the outer surface of each element as shown in FIG.
As shown in the figure, the fluid flows outward in the radial direction, enters the filter body 13a, flows through the oil filter 19, flows down the hollow bolt 14, and returns to the engine block.

[0011]

[Effect of the Invention] The oil cooler of the present invention is a doughnut-type laminated heat exchanger, which has an annular tank 6 made of a metal plate.
A cooling water inlet is formed at an appropriate position, and a pair of pipes 5 are protruded therefrom. Since one of the pipes 5 is configured to communicate with the cooling water communication hole 1 at only one end of the core 3 in the stacking direction via the communication pipe 4 in the tank, the other components are not changed. The projecting position of the pipe 5 can be arbitrarily selected, and the oil cooler has high versatility and excellent mass productivity. That is, since the position of the coolant passage opening formed in the communication pipe 4 in the tank can be arbitrarily selected, the projecting position of the pipe 5 can be freely designed according to the shape of the engine block of various vehicles and the like. (See FIG. 5). The oil 12 of the oil cooler for a vehicle according to the present invention passes through the annular oil passage 9 formed between the center opening peripheral wall of the annular tank 6 and the center pipe 7 as shown in FIG. It is cooled by the cooling water 13 in the peripheral wall of the annular tank 6 having a large area, and an efficient oil cooler is obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a use state of the present oil cooler.

FIG. 2 is a plan view of a main part of the oil cooler.

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

FIG. 4 shows a part of a cross section taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along the line VV of FIG. 3;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 3;

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 3;

FIG. 8 is an exploded perspective view of an element 2 used in the present oil cooler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling water communication hole 1a Metal plate 1b Center hole 1c Inner flange 1d Outer flange 1e Hole edge 1f Partition 2 Element 3 Core 4 Tank communication pipe 5 Pipe 6 Ring tank 7 Center pipe 8 Casing 9 Oil passage 10 Fin 10a, 10b Hole 12 Oil 12a Oil inlet 12b Oil outlet 13 Cooling water 13a Filter body 14 Hollow bolt 15 Engine block 16 Cylindrical cavity 17 Base plate 18 O-ring 19 Oil filter

Claims (1)

(57) [Scope of request for utility model registration] An element (2) forming a flat annular flow path formed by a pair of cooling water communication holes (1) and (1) adjacent to each other via a partition (1f) is connected to each of the cooling waters. The core (3) connected and laminated by the water communication hole (1) and the metal plate are formed in a relatively deep annular groove shape, and a pair of cooling water conducting holes are formed at appropriate positions on the outer periphery thereof so as to be separated from each other. As well as
An annular tank (6) in which a pair of pipes (5) and (5) is protrudingly fixed to the conduction port and on which the core (3) is placed;
A communication pipe (4) in the tank, which communicates only one of the pair of communication holes (1) opened at one end in the stacking direction of the core (3) with one of the pipes (5), and a center pipe (7). A casing (8) having a pot shape protruding from the inner surface and having an opening edge joined to a peripheral edge of the tank (6);
An oil passage (9) formed annularly between the peripheral wall at the center opening of the annular tank (6) and the center pipe (7); and an oil flow through the center pipe (7) and one end of the oil flow of the engine block. While being screwed into the opening of the entrance to fasten and fix the center pipe and the casing,
A hollow bolt (14) screwed into a center hole of an oil filter body having an oil filter built therein at the other end, and oil flowing into the casing (8) from the oil passage (9) is provided. A vehicular oil cooler configured to flow radially outward through the outer surface of each element from a cylindrical gap (16) formed between the center pipe (7) and the core (3).