JPH0424313Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil cooler, and in particular to a housingless type oil cooler that is disposed adjacent to an oil filter and can be manufactured in a compact size.

Conventional technology For example, as shown in Japanese Patent Publication No. 55-48238, an oil cooler and an oil filter are attached to one connector pipe, and oil can be continuously cooled and filtered in a small space. .

The conventional oil cooler has a housing-type structure in which a plurality of plates are provided in a housing, and oil chambers and water chambers are alternately formed between the plates. This housing type structure allows a water supply part and a drainage part to be provided on the side of the housing to supply and discharge water, so it is possible to obtain an oil cooler with a low height, and the rigidity of the housing provides high compressive strength. There are advantages. That is, the oil cooler is attached to the engine bracket via a connector pipe, and then the oil filter is attached to the connector pipe. In this case, in order to prevent oil leakage, first insert the oil filter into the center hole of the connector pipe so that it is in close contact with the oil cooler, and then screw the oil filter into the threaded hole of the engine bracket. requires compressive strength in the height direction. In this regard, the housing-type structure has greater buckling strength due to the annularly shaped housing.

Problems to be Solved by the Invention By the way, the housing type oil cooler has the drawbacks of a complicated structure, a large number of processing steps in the manufacturing process, and a high manufacturing cost. Therefore, it is conceivable to use a housingless type oil cooler that does not use a housing. For example, the housing-less type oil cooler is based on the Utility Application filed in 1983, which was filed earlier by the present applicant.
-25800 (Utility Model Application Publication No. 59-134755), it is publicly known. However, a practical housing-less oil cooler has not been proposed as a filter-integrated oil cooler that is attached to a single connector pipe together with an oil filter. The reason for this is that in housingless oil coolers, which are manufactured by laminating a large number of plates and then brazing them, compressive stress is generated in the brazed parts when the connector pipe is tightened, causing cracks and deformation in the brazed parts. This is because there are things. Furthermore, even if the brazing is completed completely, the height will increase if the oil cooler is provided with a water guide part and a drainage part, making it difficult to install it in the engine compartment of a car where installation space is limited. Ta.

Therefore, the object of this invention is to provide a housing-less oil cooler that eliminates the above-mentioned drawbacks, has a high compressive strength, and can be downsized to a practical size.

Means to solve the problem The housing-less oil cooler of this invention is
In a housingless type oil cooler, an oil filter is connected adjacently to the oil filter by a connector pipe, and has a supply passage for supplying oil to the oil filter, and also cools oil returning from the oil filter. A core to be replaced, a cover fixed to the lower part of the core and having an oil inflow chamber and an oil drainage chamber, and a water supply chamber and a water drainage chamber, and a cover fixed to the upper part of the core and supplying oil to the oil filter. an upper plate having a supply port for receiving purified oil from an oil filter and a return passage for receiving purified oil from an oil filter; a return port forming an inflow passage communicating with the oil heat exchange chamber in the core; an oil drain port forming an outflow passage communicating the oil heat exchange chamber with the oil drain chamber; a plurality of core plates having a water supply port forming a water flow passage communicating with the water heat exchange chamber, and a drainage port communicating the water heat exchange chamber in the core with the drainage chamber, the oil supply port, the return port , an annular bent portion is formed around the oil drain port, water supply port, and drainage port, and the oil supply port, return port, oil drain port, water supply port, and drainage port are arranged so that the adjacent core plates are bent at a 90° angle. It has a configuration in which it is shifted by a certain amount.

Function A large number of stacked core plates form an oil supply port, a return port, an oil discharge port, a water supply port, a discharge port, and an oil heat exchange chamber and a water heat exchange chamber, depending on their shapes. Further, the core disperses compressive stress generated when attached to the connector pipe through the annular bent portions of the oil supply port, return port, oil drain port, water supply port, and drain port.

Embodiment Hereinafter, an embodiment of this invention will be described with reference to FIGS. 1 to 15.

First, as shown in FIGS. 1 to 5, the housingless oil cooler 10 of this invention includes a core 11 formed by stacking and brazing a large number of plates, and a core 11 that is fixed to the upper part of the core 11. an upper plate 12 and a cover 1 fixed to the lower part of the core 11;
3. An oil filter 15 is fixed to an upper part of the upper plate 12 to a connector pipe 14 to which an oil cooler 10 is attached. The upper plate 12 has a central recess 17 that is fixed to a flange 16 formed on the connector pipe 14.

As shown in FIG. 2, an oil inlet 32 is formed in the cover 13, and the oil inlet 32 communicates with an inlet chamber 33 of the cover 13. The inflow chamber 33 is
connected to the oil supply passage 34 formed in the core 11;
The oil supply passage 34 includes an opening 35 formed in the upper part of the core 11 and a passage 3 formed in the upper plate 12.
6 and supply port 37, and flows into the oil filter 15. In FIGS. 2 and 3, the connector pipe 14 and the oil filter 15 are omitted.
An annular reinforcing member 38 is arranged between the core 11 and the upper plate 12. This reinforcing member 38
has a central hole 39 through which the connector pipe 14 is inserted and a plurality of holes 38a formed in the radial direction.

The connector pipe 14 has threaded portions 20a and 20.
The oil filter 15 is screwed to the threaded portion 20a, and the threaded portion 20b is screwed into a threaded hole (not shown) of the engine bracket.
The connector pipe 14 has a center hole 21 , and the center hole 21 is blocked by a partition wall 22 . Partition wall part 22
A plurality of radially formed holes 23 are provided in the connector pipe 14 above the connector pipe 14 . These holes 2
3, a return passage 25 is formed between the upper plate 12 and the plate 24 of the core 11, and the return passage 25 is connected to the inlet 2 formed in the core 11.
6 to the inflow passage 27. As shown in FIGS. 9 to 11, which will be described as a modified embodiment, an oil passage 61 and a water passage 62 are formed by a large number of core plates 52 provided within the core 11. These oil passages 61 are connected to the inflow passage 27 and also communicate with the outflow passage 28 formed at a position apart from the inflow passage 27 at an angle of 180°. The outflow passage 28 extends from the oil drain port 29 to the cover 13.
The connector pipe 1 is provided in the connector pipe 14 in a radial direction through an oil drainage chamber 30 formed by
4 and connected to a plurality of holes 31 communicating with each other.

Next, as shown in FIG. 5, a water supply pipe 40 is attached to the cover 13, and the water supply pipe 40 is connected to the water supply chamber 41.
Contact. The water supply chamber 41 is connected to the core 1 from the opening 42.
1 and is connected to a water passage 62 forming a water heat exchange chamber. This water passage 62 passes from the drainage passage 44 through the opening 45 and communicates with the drainage chamber 46 of the cover 13. Drain room 46
is connected to the drain pipe 47.

In the above configuration, the flow state of oil and water will be explained with reference to FIGS. 2 to 5.

The oil in the engine is removed from the cover 1 shown in Figure 2.
The oil flows into the inflow chamber 33 from the oil inlet 32 of No. 3. The oil in the inflow chamber 33 flows into the oil supply passage 34 of the core 11 and passes through the opening 35 and the upper plate 12.
The oil flows into the oil filter 15 through the passage 36 and the supply port 37 .

The oil purified in the oil filter 15 is
The upper plate 1 passes from the center hole 21 of the connector pipe 14 through the hole 23 and the hole 38a of the reinforcing member 38.
2 and the plate 24 of the core 11. Further, the oil flows from the return passage 25 to the inlet passage 26 of the core 11.
7 and flows into an oil passage 61 forming an oil heat exchange chamber in the core 11, where it is heat exchanged with water in a water passage 62 forming a water heat exchange chamber. In the oil heat exchange chamber, the oil is transferred to the connector pipe 14
The oil in the oil passage 61 flows through the oil passage 28, the oil drain port 29, and the oil drain chamber 30.
It flows from the hole 31 of the connector pipe 14 to the center hole 48 and toward the main gear gallery.

The water for cooling the oil flows into the water supply chamber 41 from the water supply pipe 40 of the cover 13 shown in FIG. Water passing through the opening 42 from the water supply chamber 41 passes through the water supply passage 43 of the core 11 and flows into the water passage 62 forming the water heat exchange chamber. In the water heat exchange chamber, water rotates around the connector pipe 14 in either a clockwise or counterclockwise direction.
from the opening 45 to the drain chamber 46 of the cover 13.
and is discharged from the drain pipe 47.

As an example of the core plate 50 is shown in FIGS. 6 to 8, the core plate 50 provided in the core 11 is fixed in the core 11 and connects the inflow chamber 33 of the cover 13 to the supply port 37 of the upper plate 12. a refueling port 52 forming a refueling passage 34 communicating with the
A return port 53 forms an inflow passage 27 that connects the return passage 25 of the upper plate 12 to the oil heat exchange chamber in the core 11, and the oil heat exchange chamber is connected to the oil drain chamber 30.
An oil drain port 5 forming an outflow passage 28 communicating with
4. A water supply port 55 forming a water supply passage 43 that connects the water supply chamber 41 to the water heat exchange chamber in the core 11, and a drainage port 55 forming a drainage passage 44 that connects the water heat exchange chamber in the core 11 to the drainage chamber 46. It has a port 56. The core plate 50 also includes a plurality of embosses 57 and a center hole 5 into which the connector pipe 14 is inserted.
1 is formed. center hole 51, oil supply port 52,
Return port 53, oil drain port 54, water supply port 5
5 and the drain port 56 are respectively formed with annular bent portions 51a to 56a that protrude downward.

When assembling the core 11, a large number of core plates 50 having a similar shape having an annular bent portion projecting upward or downward are stacked and soldered.
3. The oil drain port 54, the water supply port 55, and the drain port 56 are stacked with adjacent core plates 50 shifted by an angle of 90 degrees. multiple embossing 5
7 are formed at different positions at 90° angles, so
When adjacent core plates 50 are stacked with the embosses 57 in the same position stacked one on top of the other, no oil heat exchange chamber or water heat exchange chamber is formed. However, if adjacent core plates 50 are stacked with an angle of 90° shifted, there will be an embossed portion between adjacent core plates 50.
An oil heat exchange chamber or a water heat exchange chamber can be formed with a gap corresponding to a protrusion height of 7. In the embodiment illustrated by this invention, the refueling port 52 is 90°
Four return ports 53, oil drain ports 54, water supply ports 55, and drain ports 56 are formed on the same circumference at angular intervals of 90 degrees.

The above embodiments of the invention can be modified. For example, in the above embodiment, the annular bent portions 51a to 56a formed around the oil supply port 52, the return port 53, the oil drain port 54, the water supply port 55, and the drain port 56 are projected downward. It is also possible for these annular bent portions 51a to 56a to protrude upward. In addition, the positions and numbers of the oil supply port 52, return port 53, oil drain port 54, water supply port 55, and drain port 56 are as follows:
It is not limited to the above embodiments. For example, by doubling the number of ports and stacking adjacent core plates 50 by rotating them at an angle of 45 degrees, the oil supply passage 34, inflow passage 27, outflow passage 28, water supply passage 43, and drainage passage 44 are connected to these ports. It is also possible to form the Furthermore, it is also possible to form the oil heat exchange chamber and the water heat exchange chamber by joining the annular bent portions 51a to 56a without providing the embossing 57.

FIG. 9 is a sectional view taken along the line GG in FIG.
Figure 0 is a cross-sectional view taken along line E-E in Figure 14.
Figure 1 is a cross-sectional view taken along line F-F in Figure 14.
2 is a side view of the oil cooler 10 shown in FIG. 9, FIG. 13 is a sectional view taken along line H-H in FIG. 12, and FIG. 14 is a side view of the oil cooler 10 shown in FIG. 9.
FIG. 15 is a sectional view showing a state in which the connector pipe 14 and the sleeve 60 are attached instead of the reinforcing member 38. In this way, the embodiment of the core 11 of the oil cooler 10 of this invention can be modified.

Effects of the invention Lubricating ports of multiple stacked core plates,
The return port, oil drain port, water supply port, and drainage port form an oil supply passage, an inflow passage, an outflow passage, a water supply passage, and a drainage passage. The core plate can thus form the passages as well as the oil heat exchange chamber and the water heat exchange chamber without using known parts such as housings or distance pieces. In addition, the core has a refueling port, a return port,
The annular bent portions of the oil drain port, water supply port, and drain port form the oil supply passage, inflow passage, outflow passage, water supply passage, and drainage passage, so that the compressive stress generated during installation to the connector pipe can be absorbed by these passages. Since the core is supported in a distributed manner by the annular bent portion, small compressive stress is applied to each portion of the core.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a housingless oil cooler according to this invention, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along line B-B in Fig. 1. , Fig. 4 is a sectional view showing the state in which the connector pipe is connected to the oil cooler shown in Fig. 3, Fig. 5 is a sectional view taken along line C-C in Fig. 1, and Fig. 6 is a housingless type of this invention. A plan view of a core plate used in an oil cooler, Fig. 7 is a sectional view taken along line D-D in Fig. 6, Fig. 8 is a sectional view taken along line E-E in Fig. 6, and Fig. 9 is a sectional view taken along line D-D in Fig. 6. A sectional view taken along line GG in FIG. 14 showing another embodiment of the invention, and FIG.
A cross-sectional view taken along the E-E line in Figure 4, and Figure 11 is a cross-sectional view along the line E-E in Figure 4.
12 is a side view of the oil cooler 10 shown in FIG. 9, and FIG. 13 is a side view of the oil cooler 10 shown in FIG.
2, FIG. 14 is a plan view of the oil cooler 10 shown in FIG. 9, and FIG. 15 is a sectional view showing the state in which the connector pipe 14 and sleeve 60 are attached. 10...Housingless type oil cooler, 11
... Core, 12 ... Upper plate, 13 ... Cover, 14 ... Connector pipe, 15 ... Oil filter, 33 ... Inflow chamber, 34 ... Oil supply passage, 3
7... Supply port, 25... Return passage, 27... Inflow passage, 28... Outflow passage, 29... Oil drain port, 30
... Oil drain chamber, 33 ... Inflow chamber, 40 ... Water supply pipe,
41... Water supply chamber, 43... Water supply passage, 44... Drainage passage, 46... Drainage chamber, 50... Core plate, 51... Center hole, 52... Oil supply port, 53
... Return port, 54 ... Oil drain port, 55 ...
Water supply port, 56... Drainage port, 51a to 56
a... Annular bent portion, 57... Emboss.

Claims (1)

[Claims for Utility Model Registration] (1) A housing-less type oil having an oil filter connected adjacently to the oil filter by a connector pipe, having a supply passage for supplying oil to the oil filter, and cooling the oil returning from the oil filter. In the cooler, a core for exchanging heat between oil and water, a cover fixed to a lower part of the core and having an oil inlet chamber and an oil drain chamber, and a water supply chamber and a water drain chamber, and an upper part of the core. an upper plate fixed to the core and having a supply port for supplying oil to an oil filter and a return passage for receiving purified oil from the oil filter; and a top plate fixed to the core and communicating the inlet chamber with the supply port; an oil supply port forming an oil supply passage; a return port forming an inflow passage connecting the return passage to an oil heat exchange chamber in the core; and an exhaust port forming an outflow passage connecting the oil heat exchange chamber to the oil drainage chamber. a plurality of core plates having an oil port, a water supply port forming a water passage connecting the water supply chamber to a hydrothermal exchange chamber in the core, and a drainage port connecting the hydrothermal exchange chamber in the core to the drainage chamber; An annular bent portion is formed around the oil supply port, return port, oil drain port, water supply port, and drainage port, and the oil supply port, return port, oil discharge port, water supply port, and drainage port are A housingless oil cooler, characterized in that the adjacent core plates are shifted by an angle of 90°. (2) The four oil supply ports are formed on the same circumference at angular intervals of 90°, and the return port, oil drain port, water supply port, and drainage port are formed on the same circumference at angular intervals of 90°. A housing-less type oil cooler according to claim (1) of the registered utility model, which is formed as a single unit.