JPS6114799Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an oil cooler assembled to an oil filter.

For dual type oil filters,
A full flow passage and a bypass passage are provided in the filter casing, and the lubricating oil that flows into the outer periphery of the casing is passed through each filter, and most of the lubricating oil flows through the full flow passage for engine lubrication, while a small The structure is such that a large amount of lubricating oil is circulated to the oil reservoir via a bypass flow path.

By the way, this type of filter is assembled integrally with an oil cooler, and the lubricating oil supplied from the oil reservoir is cooled while flowing through the heat exchanger of the oil cooler, flows into the filter, and then passes through the oil cooler as described above. After passing through the oil cooler, the oil passes through the center of the oil cooler and flows into the respective flow paths.

In order to unitize the oil cooler with the filter in this way, in the case of conventional oil coolers, a double flow path is formed in the center of the oil cooler, consisting of a full flow path introduced from the filter and a bypass flow path. For this purpose, a double cylindrical pipe is provided in the center of the filter to connect the filter in an oil-tight manner, and its inner pipe is communicated with the full flow passage.
The outer cylinder and inner cylinder are connected to a bypass flow path, but this increases the number of parts, complicates the structure, and makes assembly difficult, resulting in high costs. It had a point.

This invention was devised in view of the above-mentioned problems, and the object is to divide the oil cooler into a full-flow passage and a bypass passage with a relatively simple and easy-to-assemble structure.

In order to achieve the above object, the present invention makes it possible to distribute the flow paths by using the inner cavity formed in the center of the oil cooler.
An embodiment of this invention will be described in detail with reference to the drawings.

In FIG. 1, 10 is an oil cooler, and 12 is an oil filter detachably mounted on the oil cooler 10. In FIG.

The oil filter 12 includes a cylindrical casing 14 with an open bottom, a base plate 18 that is provided at the bottom of the casing 14 to cover it, and is supported by a mounting plate 16 that is caulked to the periphery of the bottom. and a filter assembly 20 supported between the upper inner surface of the casing 14 and the upper inner surface of the casing 14.

An opening 18a for introducing lubricating oil is formed at the periphery of the end plate, and a rising portion 18b having a female screw portion on the inner periphery for coupling to the oil cooler 10 is provided at the center thereof. has been done.

The filter assembly 20 also includes a bypass element 26 having a relatively dense over-member and a relatively coarse over-member disposed concentrically between the upper end plate 22 and the lower end plate 24. The upper end plate 2 consists of a full flow element 28 composed of
A flow path between the two is defined by an axial pipe 30 which is vertically disposed at the lower center of the axial pipe 2, and the lubricating oil that has passed through the full flow element 28 flows through the inner cylindrical part of the axial pipe 30.
Furthermore, the lubricating oil that has passed through the bypass element 26 is made to flow around the outer circumference of the shaft tube 30.

The oil cooler 10 includes piping that constitutes lubricating oil inlet and outlet ports, and a mounting block 32 for connection.
An oil cooler main body 34 is integrated with the upper part of this block 32, and a mounting plate 36 whose peripheral edge is integrated with the upper part of this main body 34 is provided.

The main body 34 is housed in an exterior jacket 38 through which cooling water is circulated, and one end thereof communicates with a cavity 40 formed on the upper surface of the block 32, and the other end communicates with a space 40 formed on the upper surface of the block 32. is provided with a heat exchanger 42 that communicates with the opening 18a of the base plate 18, and the heat exchanger 4
2 and the upper and lower end plates 38a, 38b of the outer jacket 38 have an opening formed therein at the center of the upper and lower end plates 38a, 38b. A pipe 46 whose lower end is threaded through the mounting block 32 is inserted into the inner cavity 44, and a nut 48 is threaded onto the protruding end of the main body 34 of the pipe 46 and tightened. In particular, the body 34 and the lock 32 are coupled together at the attachment point.

The mounting block 32 includes a lubricating oil inlet port 50 communicating with the cavity 40, a second cavity 52 concentrically bored inside the cavity 40 and communicating with the lumen 44, A full flow outlet port 54 communicating with the lower part of the pipe 46, a second bypass outlet port 56 bored parallel to this outlet port 54, and a space between the outlet port 56 and the second space 52. A communicating pore 58 is formed in each case.

The protruding end of the pipe 46 from the mounting plate 36 is screwed into the rising portion 18b of the base plate 18 via a packing 60, as shown in enlarged view in FIGS. 1 and 2. The oil filter 12 is removably mounted on the oil cooler 10, and the tip of the shaft tube 30 is oil-tightly fitted into the inner cylindrical portion of the tip of the pipe 46 via an O-ring 62. Furthermore, a communication hole 64 parallel to the vertical direction of the pipe 46 is bored at the protruding end of the rising portion 18b of the pipe 46.
The tip of this communication hole 64 is communicated with the inner cavity 44 .

Therefore, lubricating oil is pumped from an oil reservoir (not shown) through an oil pump to the inlet port 5.
0 into the heat exchanger 42, heat is exchanged by the cooling water flowing between this and the outer jacket 38, and the cooling water is cooled and transferred from the heat exchanger 42 to the mounting plate 3.
6 into the casing 14 of the oil filter 12 through an opening formed in the base plate 18, and passes through the full flow element 28.

Most of the lubricating oil that has passed through the full flow element 28 flows through the shaft pipe 36 → pipe 46 → outlet port 54, and is used to lubricate each part of the engine.

Further, a part of the lubricating oil that has passed through the full flow element 28 passes through the bypass element 26 and is supplied between the inner cylinder part of this element and the outer circumferential part of the shaft tube 30, and is further passed through the communication hole 64 from the inner lumen part 44 to the third part. The oil flows from the second air gap 52 to the second outlet port 56 via the pore 58, and from there it is circulated again to the oil reservoir via an appropriate piping route. In addition, in each figure, from the inlet port 50 to the outlet port 50 on the full flow side
The oil passage up to the point is indicated by a solid line arrow, and the oil passage on the bypass side is indicated by a dotted line arrow.

As explained in detail in the embodiments above, in the oil cooler according to this invention, the oil passage on the bypass side is made to pass through the inner cavity formed in the center of the oil cooler main body. Therefore, there is no need for a double cylindrical structure to form the full flow and bypass flow paths as in the past, and it is only necessary to provide a single pipe that serves as the oil path on the full flow side, which is the main flow path. The structure is simple and easy to assemble, and a unit in which this kind of dual type oil filter and oil cooler are assembled together can be provided at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing the overall structure of an oil cooler according to this invention, in which an oil filter is mounted on the upper part, and FIG. 2 is an enlarged cross-sectional view of the main part of this invention. 10... Oil cooler, 12... Oil filter, 14... Casing, 16... Mounting plate, 18... Base plate, 18a... Opening,
18b... rising portion, 20... filter assembly, 22... upper end plate, 24... lower end plate, 26... bypass element,
28...Full flow element, 30...Shaft pipe,
32...Mounting block, 34...Oil cooler body, 36...Mounting plate, 38...Exterior jacket, 40...Air gap, 42...Heat exchanger, 44...
...Inner cavity, 46...Pipe, 48...Nut, 5
0...Pipe joint, 52...Second gap,
54... Outlet port, 56... Second exit port, 58... Pore, 60... Packing, 62...
...O-ring, 64... communication hole.

Claims (1)

[Scope of utility model registration request] A full flow element and a bypass element are housed in the casing, and the lubricating oil that has passed through the full flow element is sent out from the center of the casing, and the outlet side flow path is distributed so that it is passed through the bypass element from the periphery. A heat exchanger is housed in an exterior jacket, and a pipe serving as the oil filter and the outlet side flow path is installed in the inner cavity formed through the center of the jacket with a predetermined gap. The inner peripheral part of the pipe is oil-tightly connected to the shaft pipe constituting the full-flow side flow path, and the outer peripheral part of this pipe has a small hole parallel to the oil cooler. An oil cooler characterized in that a small hole is formed through the hole, one end of the small hole communicates with the bypass side flow path, and the other end communicates with the inner cavity.