JPH06173626A - Oil cooler device - Google Patents

Abstract

PURPOSE:To provide a compact structure oil cooler device arranged continuously to an oil filter. CONSTITUTION:An oil cooler device 1 has a water cooling type heat exchanger 10 to cool lubricating oil 5, an oil filter 20 to remove a foreign matter in the lubricating oil 5 and a bracket 30 to support these 10 and 20 with an engine block 93. A recessed part 31 to house the heat exchanger 10 is arranged above the bracket 30, and a hollow pole 38 to pass the lubricating oil 5 is erected in the central part. The heat exchanger 10 is fixed to the bottom part 34 of the bracket 30 by a fixing tool 33 by inserting the hollow pole 38. The oil filter 20 is screw-fitted to a male screw 381 arranged in the head part of the hollow pole 38, and is fixed to the bracket 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil cooler device in which a water-cooled heat exchanger for cooling engine lubricating oil and an oil filter are connected in series.

[0002]

2. Description of the Related Art Since foreign substances such as metal powder and carbon powder are mixed in engine lubricating oil, the foreign substances are removed by an oil filter. The heated lubricating oil is cooled by an oil cooler. That is, as shown in FIG. 12, the lubricating oil 5 is pumped to the oil pump 55 and circulates among the oil cooler 90, the oil filter 91, the engine 9 and the oil pan 56.

The oil cooler is classified into an air cooling type and a water cooling type. The air-cooled oil cooler has a limitation that it cannot fully exhibit the cooling effect unless it is installed in a place where the vehicle receives wind. On the other hand, as shown in FIG. 13, the water-cooled oil cooler 90 is installed in the engine block 93 in series with the oil filter 91 in order to shorten the oil passage and make the whole compact.

That is, as shown in FIG. 13, a water-cooled oil cooler 90 and an oil filter 91 are mounted on a bracket 92 provided on an engine block 93 by a center bolt 94. Then, the center bolt 94 is inserted through the oil cooler 90 and the lower screw 941 thereof is screwed into the screw hole 921 of the bracket 92. Then, the collar portion 943 presses the oil cooler 90, and the oil cooler 9
0 is closely pressed to the upper plate 922 of the bracket 92.

Further, a recess 911 having an internal thread is formed in the central shaft portion below the oil filter 91,
By screwing the recess 911 into the upper screw 942 of the center bolt 94, the oil filter 91 is pressed against and fixed to the oil cooler 90 (actually open 63-57).
308). Incidentally, in FIG. 13, 951, 9
52 is an O-ring, and 904 is a reinforcing member for the oil cooler.

Then, the lubricating oil 5 flows from the engine block 93 into the dirty oil passage 923 of the bracket 92, as shown by the solid line arrow in the figure, and the heat exchanger 9 of the oil cooler 90.
After flowing into the oil filter 91 through 02, it becomes purified oil from which foreign matter is removed, and is recycled to the engine block 93 from the oil passage 924 of the bracket 92 through the hollow portion 944 of the center bolt 94.

On the other hand, the cooling water of the oil cooler 90 is shown in FIG.
The inflow pipe 90 of the oil cooler 90 as indicated by the broken arrow
1, the lubricating oil 5 is cooled in the heat exchanger 902, and then flows out from the outflow pipe 903. In addition, the heat exchanger 902
Has been devised in order to increase the contact area between the cooling water and the lubricating oil 5 and increase the cooling efficiency (see, for example, Japanese Utility Model Publication No. 63-35263).

Incidentally, the oil filter 91 in the above-mentioned conventional example is a so-called spin-on type oil filter 91 in which the entire oil filter 91 is attached / detached together with a screw.
However, an element-replacement type oil filter 91 in which a case and a filter element (hereinafter, simply referred to as an element) are separated from each other is often used.

Such an element exchange type oil filter has been devised so that the element can be easily exchanged by a method such as providing an easily removable cap on the case of the oil filter. Further, a structure in which the upper and lower positions of the oil filter and the oil cooler are reversed and the oil filter is provided in the lower part has also been proposed (for example, see Japanese Utility Model Laid-Open No. 81471/1982).

[0010]

However, the conventional water-cooled oil cooler device connected to the oil filter has the following problems. That is, the conventional oil cooler device has a structure in which the bracket 92, the oil cooler 90, and the oil filter 91 are simply overlapped with each other, and each has a separate exterior, so that the number of parts is large and the overall size is small. Hard to say.

Further, as is known from FIG. 13, the above-mentioned conventional oil cooler device has a structure in which the flange portion 943 of the center bolt 94 presses the central portion of the heat exchanger 902 from above. On the other hand, the heat exchanger 902 is, as described later,
It is composed of a heat exchange member having a crowded shape in order to form a bent cooling flow path. Therefore, a heavy weight reinforcing material 904 is used in the central portion of the heat exchanger 902, and a rigid heat exchange member is used.
This hinders weight reduction and size reduction of the heat exchanger 902 as a whole.

Further, there is also a problem that the space tightened by the reinforcing member cannot form a cooling flow path and therefore does not contribute to heat exchange, thus lowering the heat exchange efficiency per volume. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an oil cooler device having a compact structure connected to an oil filter.

[0013]

The present invention is an oil cooler device having a water-cooled heat exchanger for cooling lubricating oil, an oil filter for removing foreign matters in the lubricating oil, and a bracket for supporting them on an engine block. A recess for accommodating the heat exchanger is provided on the upper part of the bracket, and
A hollow pole through which lubricating oil is passed is erected at its center, the heat exchanger is inserted through the hollow pole and fixed to the bottom of the bracket by a fixture, and the oil filter is connected to the hollow pole. The oil cooler device is characterized in that the oil cooler device is fixed to the bracket by being screwed onto a male screw provided on the head of the.

What is most noticeable in the present invention is that the bracket is provided with a recess to accommodate the heat exchanger and the heat exchanger is fixed to the bottom of the heat exchanger with a fixture. Further, a hollow pole through which lubricating oil is passed is erected in the recess, and an oil filter is screwed onto the upper portion of the hollow pole to fix the oil filter to the bracket.

[0015]

In the present invention, the bracket is provided with a recess and the heat exchanger is housed therein. Therefore,
Since the space occupied by the bracket and the space occupied by the heat exchanger are integrated, space saving can be achieved. Also,
By housing in the bracket, the case unique to the heat exchanger becomes unnecessary, and the number of parts can be reduced.

Further, since the heat exchanger fixes itself to the bottom of the concave portion of the bracket by a fixture, a force for fixing the heat exchanger is applied only to the fixed portion. That is, unlike the conventional example shown in FIG. 13, the hollow center bolt through which the lubricating oil is passed does not have a structure in which the central portion of the heat exchanger (oil cooler) is entirely pressed.

Therefore, no external force is applied to the heat exchange member, which is a main part of the heat exchanger and forms a complicated flow path of the refrigerant and the lubricating oil. Therefore, the rigidity of the heat exchange member is reduced, and the reinforcing material at the center of the heat exchanger (FIG. 13, reference numeral 904).
Is completely unnecessary. Further, the oil filter is fixed to the bracket by a hollow pole, so that the oil filter does not press the heat exchanger unlike the conventional example.

Therefore, the heat exchange member of the heat exchanger can be made thin and lightweight. Further, since the reinforcing material used in the conventional device is not required in the central part of the heat exchanger, the effective area of the heat exchange part is increased and the cooling efficiency is relatively improved. Therefore, the heat exchange performance of the heat exchanger can be improved and the size can be reduced. As described above, according to the present invention, it is possible to provide an oil cooler device having a compact structure connected to an oil filter.

[0019]

【Example】

Embodiment 1 FIG. 1 shows an oil cooler device according to an embodiment of the present invention.
This will be described with reference to FIG. In this example, as shown in FIG. 1, a water-cooled heat exchanger 10 for cooling the lubricating oil 5, an oil filter 20 for removing foreign matters in the lubricating oil 5, and a bracket 30 for supporting them on the engine block 93. It is the oil cooler apparatus 1 which has.

A recess 31 for accommodating the heat exchanger 10 is provided in the upper portion of the bracket 30, and a hollow pole 38 for allowing the lubricating oil 5 to pass is provided upright in the center of the recess 31.
The heat exchanger 10 has the hollow pole 38 inserted therein and is fixed to the bottom portion 34 of the bracket 30 by a set screw as a fixture 33. The oil filter 20 is fixed to the bracket 30 by a male screw 381 provided on the head of the hollow pole 38. Each will be described in detail below.

As shown in FIG. 1, the bracket 30 has a cylindrical shape and is attached to the engine block 93 by a bolt 931 and has a lower base column 36 and an upper housing portion 35. The base post 36 has three legs 363 (FIG. 2) for attaching the bracket 30 to the engine block 93 by the bolt 931 and an inflow oil passage 361 and an outflow oil passage 362 for the lubricating oil 5. There is. Further, the base column 36 has an inflow water channel 364 and an outflow water channel 365 for the cooling water 7 as shown in FIG. 2, and is connected to an inflow water pipe 371 and an outflow water pipe 372, respectively.

The lubricating oil 5 is, as shown in FIG.
An oil passage is formed that is pressure-fed to the oil pump 55, flows into the oil cooler device 1 from the oil pan 56, flows out again, flows into the engine block 93, and returns to the oil pan 56 via each part of the engine. . Also,
A cooling water passage is formed so that the cooling water 7 is sent under pressure to the water pump 71 and circulates between the engine, the oil cooler device 1 and the radiator 72.

A screw hole 3 for screwing a hollow pole 38, which is in communication with the outflow oil passage 362, is formed at the center of the base 36.
66 (FIG. 2) is provided. In addition, the bottom portion 34 of the base 36
As shown in FIGS. 1 and 2, stepped deep holes 367 for mounting the heat exchanger 10 using the fixtures 33 are provided on the three sides.

On the other hand, above the bracket 30, there is a housing portion 35 having a recess 31 for housing the heat exchanger 10. As shown in FIG. 2, a mounting seat surface 351 of the oil filter 20 is formed on the upper surface of the housing portion 35. Further, the bottom surface 311 of the concave portion 31 is provided with a shallow dirty oil groove 316 in the shape of a semicircle that forms a passage for the inflowing lubricating oil 5 and so-called dirty oil 51.

As shown in FIG. 3, the heat exchanger 10 has a cylindrical shape and includes a bottom plate 13, upper and lower partition plates 12 and 14,
A plurality of plates 15 and inner fins 16 that are alternately laminated are integrated by vacuum brazing.

The heat exchanger 10 has a pole hole 102 at the center for pushing the hollow pole 38, and
As will be described later, a passage for the cooling water 7 and a passage for the dirty oil 51 are formed inside. Further, the heat exchanger 10 is inserted with positioning holes 103 (FIGS. 3 to 7) used when assembling the above-mentioned members 12 to 16 constituting the heat exchanger 10.

As shown in FIG. 4, the bottom plate 13 of the heat exchanger 10 has a pole hole 102 through which the hollow pole 38 is inserted, and a plurality of dirty oil ports 132 and a pair of circular cooling holes. It has a water outlet 133. And the cooling water port 13
An O-ring groove 135 is provided on the lower surface of 3, and an O-ring (not shown) is attached. Further, the bottom plate 13 is provided with three female screw holes 136 for screwing the heat exchanger 10 to the bracket 30 and the positioning hole 103. The bottom plate 13 is made of metal such as aluminum alloy or stainless steel.

As shown in FIG. 3, a lower partition plate 14 is attached to the upper part of the bottom plate 13, and the lower partition plate 1
A plurality of plates 15 and inner fins 16 are alternately stacked between the upper plate 4 and the upper partition plate 12. As shown in FIG. 5, the lower partition plate 14 has a plurality of oval dirty oil ports 142.
And a pair of circular cooling water ports 143, a pole hole 102 and a positioning hole 103. The lower partition plate is formed of a thin plate of aluminum alloy or stainless steel having a thickness of about 0.8 mm.

Further, as shown in FIG. 3 (a), the upper partition plate 12 has no cooling water port, and the lower partition plate 14
It is a plate-shaped body having almost the same shape as. The plate thickness is about 1.2 mm, which is slightly thicker than the lower partition plate 12.
On the other hand, the plate 15 and the infins 16 are, for example, plate-shaped bodies as shown in FIGS. 6 and 7, each of which has a pole hole 102 and a positioning hole 103, and has complicated oil ports 152 and 162 and cooling. It has water ports 153 and 163.

The plate 15 and the inner fin 16
And are laminated alternately, and the plate 15 and the inner fin 1
By sequentially arranging 6 and 6 by rotating 180 °, the dirty oil 51 and the cooling water 7 both flow zigzag in the labyrinth-like passage, so that the dirty oil ports 152 and 162 and the cooling water port 153 are provided. 163 is formed (detailed description is omitted). Both the plate 15 and the inner fin 16 are made of a thin plate of about 0.8 mm made of aluminum alloy, stainless steel or the like.

Then, in the concave portion 31 of the bracket 30,
As shown in FIG. 8, a hollow hollow pole 38 having male screws 381 and 382 formed on the upper and lower portions is provided upright. That is, the screwing screw hole 366 provided in the base post 36 of the bracket 30.
Further, the lower male screw 382 can be screwed on.

Then, as shown in FIG. 1, the oil filter 2
At the lower part of 0, a circular recess 251 is formed in which a female screw 381 to be screwed into the upper male screw 381 of the hollow pole 38 is formed. Further, at the lower part of the oil filter 20, there is provided a dirty oil passage 201 through which the dirty oil 51 flowing out from the dirty oil port 122 (FIG. 3A) of the heat exchanger 10 is introduced.

As shown in FIG. 1, the oil filter 20 includes a filter 21 and a core 2 inside a cylindrical case 22.
4 and. The cored bar 24 is a tubular body having a small hole 241 for allowing the purified oil 52 to flow into the outer peripheral surface thereof and forming a return path for the purified oil 52 in the central portion. Next, the function and effect of the oil cooler device 1 of this example will be described.

In the oil cooler device 1 of this embodiment, as shown in FIG. 1, the cooling water 7 flows in from the inflow pipe 371,
It flows out of the outflow pipe 372 again through the labyrinthine flow path formed by the plate 15 of the heat exchanger 10 and the inner fin 16. The bottom plate 13 of the heat exchanger 10 has a fixture 33.
Is attached to the bottom surface of the concave portion 31 of the bracket 30 and the cooling water 7 is sealed by the O-ring.

Further, the lubricating oil 5 flows in from an inflow oil passage 361 provided in the base 36, and is cooled in a labyrinth-like passage formed by the plate 15 of the heat exchanger 10 and the inner fins 16. Then, the dirty oil inlet 122 (FIG. 3 (a)) of the upper partition plate 12 of the heat exchanger 10 flows into the dirty oil passage 201 of the oil filter 20 to remove foreign matters by the filter 21 to become the purified oil 52, and the core metal. From the oil purification return path in the central portion of 24, the oil flows out through an oil outflow passage 362 provided in the base 36 through the hollow portion 383 of the hollow pole 38.

In this example, the bracket 30 is provided with a recess 31 to accommodate the heat exchanger 10. Therefore, a part of the space occupied by the bracket 30 and the space occupied by the heat exchanger 10 are integrated and shared to save space. Further, since the case unique to the heat exchanger 10 is unnecessary, the number of parts can be reduced.

Further, since the heat exchanger 10 fixes itself to the bottom portion 34 of the bracket 30 with the set screw which is the fixing member 33, the fixing force is applied only to the bottom plate 13 which is the fixing portion. Therefore, the fixing force is not applied to the plate 15 and the inner fins 16 which are the main parts of heat exchange of the heat exchanger 10.

The external force for mounting the oil filter 20 is also applied to the bracket 30 and does not act on the heat exchanger 10. Therefore, since the fluid pressure of the lubricating oil 5 and the cooling water 7 is only applied to the portion of the heat exchanger 10 other than the bottom plate 13, the heat exchanger 10 as a whole can be made thin and lightweight.

Further, since the reinforcing material (reference numeral 904) used in the conventional heat exchanger is not required, the effective area for heat exchange is increased and the cooling efficiency is relatively improved. Therefore, the heat exchange performance of the heat exchanger 10 can be improved and the size can be reduced. As described above, according to this example, it is possible to provide an oil cooler device having a compact structure that is connected to the oil filter 20.

Embodiment 2 This embodiment is an example in which the passage for the cooling water 7 in Embodiment 1 is directly connected to the cooling water passage 931 for the engine block 93 as shown in FIG. In this example, the inflow / outflow water channels 364 and 365 of the bracket 30 are directly connected to the cooling water channel 931 of the engine body.
71 and the outflow water pipe 372 are unnecessary. Others are Example 1
The same effect can be obtained.

Embodiment 3 This embodiment is an example in which the inflow water pipe 373 and the outflow water pipe 374 of the cooling water 7 in Embodiment 1 are attached to the side wall 352 of the housing portion 35 of the bracket 30 as shown in FIGS. 10 and 11. .
Further, female screws 3681 and 3411 are provided on the side surface 368 of the base post 36 of the bracket 30 and the bottom outer wall 341, and a blind plug 369 is provided.
Is provided.

By doing so, the degree of freedom of mounting height of the cooling water inflow / outflow water pipes 373, 374 from the engine block is increased, and the water pipes 373, 37 are also provided.
Opening angle θ when mounting 4 to bracket 30
(Fig. 11) can be freely decided. Others are the same as in the first embodiment.

[Brief description of drawings]

FIG. 1 is an overall explanatory diagram of an oil cooler device according to a first embodiment.

FIG. 2A is a plan view of the bracket of the first embodiment and FIG.
-A arrow line sectional view (b).

FIG. 3 is a plan view (a) and a front sectional view (b) of the heat exchanger according to the first embodiment.

FIG. 4 is a plan view (a) of the bottom plate of the heat exchanger of Example 1 and a cross-sectional view taken along the line BB of FIG.

FIG. 5 is a plan view of a lower partition plate of the heat exchanger of Example 1.

FIG. 6 is a plan view of a plate of the heat exchanger according to the first embodiment.

FIG. 7 is a plan view of inner fins of the heat exchanger according to the first embodiment.

FIG. 8 is a plan view (a) and a front sectional view (b) of the hollow pole of the first embodiment.

FIG. 9 is a front sectional view of a bracket of the oil cooler device according to the second embodiment.

FIG. 10 is a front cross-sectional view of the bracket of the oil cooler device according to the third embodiment.

FIG. 11 is a plan view of the oil cooler device according to the third embodiment.

FIG. 12 is an oil system diagram of a conventional air-cooled oil cooler.

FIG. 13 is an overall explanatory view of a conventional oil cooler device.

[Explanation of symbols]

 1. ． ． Oil cooler device, 10. ． ． Heat exchanger, 13. ． ． Bottom plate, 20. ． ． Oil filter, 21. ． ． Filter, 22. ． ． Case, 24. ． ． Core metal, 30. ． ． Bracket, 31. ． ． Recess, 33. ． ． Fixture, 34. ． ． Bottom, 35. ． ． Storage section, 36. ． ． Base pillar, 38. ． ． Hollow pole, 5. ． ． Lubricating oil, 51. ． ． Dirty oil, 52. ． ． Clean oil, 7. ． ． Cooling water,

Claims (1)

[Claims] 1. A water-cooled heat exchanger for cooling lubricating oil,
An oil cooler device comprising an oil filter for removing foreign matters in lubricating oil and a bracket for supporting these in an engine block, wherein a recess for accommodating the heat exchanger is provided in an upper portion of the bracket, and a center thereof is provided. A hollow pole through which lubricating oil is passed is erected in the section, the heat exchanger is inserted through the hollow pole and fixed to the bottom of the bracket by a fixture, and the oil filter is attached to the head of the hollow pole. An oil cooler device, characterized in that the oil cooler device is fixed to the bracket by being screwed onto a male screw provided on the section.