JPH0514512U - Oil cooler with oil filter - Google Patents

Abstract

(57) [Summary] [Purpose] An oil filter in which a bypass valve is installed without increasing the overall structure by installing a bypass valve in the partition wall that separates the cooling water inflow portion and the oil outflow passage. Providing an attached oil cooler. [Structure] Mounting base 14, multi-plate oil cooler 16 mounted on the mounting base 14, and this oil cooler 1
6, the oil filter 18 placed on 6 and the oil cooler 16 are penetrated at both ends to attach the base 14 and the oil filter 1.
8 is an oil cooler with an oil filter equipped with a connection pipe 48 screwed to the oil cooler 8. A partition wall 30 that separates from the passage 36 is provided, and a gap 25 is provided between the inner circumference of the oil cooler 16 and the connection pipe 48.
A leaf valve 59 for opening and closing the bypass hole 56 is provided on the upper part of the bypass valve 52 on the outer periphery of the bypass hole 59.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil cooler, and more particularly to an oil cooler with an oil filter.

[0002]

[Prior Art]

 As is well known, in the engine of an automobile, in order to keep the clay of the lubricating oil proper and to obtain a good lubricating effect, the temperature of the lubricating oil is appropriately reduced and supplied to the engine. An oil cooler is placed in the engine lubrication system. As one type of this type of oil cooler, there is a multi-plate type in which the heat exchange passage for the cooling water of the lubricating oil is separated by a large number of plates, and in order to make it compact, an oil filter that filters the oil cooler and the lubricating oil is used. An oil cooler with an oil filter such as this is normally integrated, and the oil after cooling with the oil cooler is normally filtered by the oil filter.

By the way, in engine lubricating oil, when the temperature is low such as in winter, the clay content of the lubricating oil decreases and the flow resistance increases.

Therefore, in particular, in order to improve heat exchange efficiency, in an oil cooler in which fins are incorporated in the heat exchange passage, the flow resistance of the oil circulation system becomes large, and an excessive load is applied to, for example, an oil pump. This causes the inconvenience.

Therefore, as disclosed in, for example, Japanese Utility Model Laid-Open No. 54-15289, there has been proposed one having a passage for bypassing an oil cooler when the flow resistance of lubricating oil becomes high.

In the publication, a bypass passage having a valve that opens and closes by oil pressure is integrally provided on the side of an oil cooler core, and a separate bypass passage is provided at a portion where oil flows into and out of the oil cooler. Although the one provided is illustrated, there is a problem described below particularly when this structure is applied to a multi-plate type oil cooler provided with an oil filter.

[0007]

[Problems to be solved by the device]

 That is, in a multi-plate oil cooler, since the plates are arranged close to each other, it is difficult to secure a space for installing an opening / closing valve in the heat exchange passage.Therefore, a bypass passage separate from the oil cooler should be provided. However, this structure impairs the advantage of the oil cooler with an oil filter, which is intended to be compact.

The present invention has been made in view of the above problems, and an object thereof is to provide an oil filter having a bypass passage in which a bypass valve having a simple structure can be installed without increasing the size of the whole. It is to provide an oil cooler with.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a mounting base having an oil inlet and an outlet port for oil, and a distribution of oil and cooling water which are mounted on the mounting base and which flow from the inlet port, separated from each other. A circular multi-plate oil cooler having a heat exchange passage, an oil filter mounted on the oil cooler for filtering the oil passing through the heat exchange passage, and both ends of the oil cooler penetrating the oil cooler. An oil cooler with an oil filter provided with a connecting pipe that is screwed to the base body and the oil filter and that connects the outlet port and the secondary side of the oil filter, wherein the cooling water flows out to the upper end of the oil cooler. A partition that defines an inlet and a communication passage through which the oil cooled by the oil cooler flows into the oil filter. In addition, a gap is provided between the inner circumference of the oil cooler and the connecting pipe, a bypass hole is bored in the partition wall above the gap, and a leaf spring for opening and closing the bypass hole is provided in the bypass hole. It was equipped with a bypass valve on the outer periphery of the.

[0010]

[Action]

 According to the oil cooler configured as described above, since the bypass valve is provided in the partition wall that separates the inflow / outflow portion of the cooling water and the communication path through which the oil flows out, the bypass passage is formed without increasing the overall shape. it can.

[0011]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 3 show an embodiment of an oil cooler with an oil filter according to the present invention.

The oil cooler with an oil filter shown in FIG. 1 includes a mounting base 14 having an oil inlet port 10 and an oil outlet port 12, an oil cooler 16 mounted on the mounting base 14, and an upper part of the oil cooler 16. And an oil filter 18 mounted on the.

The oil cooler 16 holds an annular gut 20 at its lower end, and the gasket 20 is clamped to be attached to the mounting base 14 in a liquid-like manner.

The oil cooler 16 is provided with through-holes at appropriate places, and a large number of disc-shaped plates having step projections in the vertical direction are stacked and a pair of upper and lower end plates 17 and 19 are joined to each other. A multi-plate structure in which a heat exchange passage composed of an oil passage 22 and a cooling water passage 24 is formed inside is isolated.

The oil passage 22 and the cooling water passage 24 run like a labyrinth in the oil cooler 16 to exchange heat between the oil and the cooling water. A fin 26 is provided inside the let port 10 while communicating with the let port 10.

A concave cover plate 28 is fixed on the end plate 19 on the upper end side of the oil cooler 16, and an elliptical partition wall 30 is attached to the inside of the cover plate 28. An inflow portion 32 and an outflow portion 34 are formed in the cooling water, and the inside of the partition wall 30 serves as a communication path 36 that connects the oil cooler 16 and the oil filter 18 to each other.

The cover plate 28 is provided with an inflow pipe 38 communicating with the inflow portion 32 and an outflow pipe 40 communicating with the outflow portion 34, respectively, and the inflow portion 32 and the outflow portion 34 are provided with the cooling water. The communication passage 36 communicates with both ends of the passage 24 through the communication holes 41, 41, while the communication passage 36 communicates with the oil passage 22 through the communication hole 43.

The mounting base 14, the oil cooler 16 and the oil filter 18 are integrally assembled by a connecting pipe 48 which penetrates the center of the oil cooler 16 and has both ends screwed to the mounting base 14 and the oil filter 18. It is attached. The upper end of the connecting pipe 48 communicates with the secondary side 50 of the filter paper element 44, and the lower end thereof communicates with the outlet port 12 of the oil. A bypass valve 52 is provided inside the partition wall 30 to open when the flow resistance of oil increases.

The bypass valve 52 communicates directly with the inlet port 10 that supplies oil to the gap 25 between the connecting pipe 48 and the inner circumference of the oil cooler 16, and a bypass hole 56 is formed in the upper portion of the gap 25 at appropriate times around the periphery. The ring 57 is sandwiched between the partition wall 30 and the nut portion 58, and the leaf spring 59 is held on the outer periphery of the bypass hole 56.

In the oil cooler with an oil filter configured as described above, the oil used for lubricating the engine flows into the inlet port 10, flows through the inlet port 10 and the oil passage 22, and passes through the oil passage 22. At this time, it is cooled by exchanging heat with the cooling water flowing through the cooling water passage 24.

The oil cooled by the oil cooler 16 is introduced into the primary side 46 of the oil filter 18 through the communication passage 36, filtered by the filter paper element 44, and then flows out to the secondary side 50, and the connecting pipe 48, After flowing downstream from the outlet port 12, it is supplied again to the lubricated part of the engine.

At this time, when the oil temperature is sufficiently high and the flow resistance is low, the oil pressure directly connected to the inlet port 10 acting on the leaf spring 59 via the bypass hole 56 is larger than the urging force of the leaf spring 59. Since it becomes smaller, the bypass hole 56 is not opened.

On the other hand, when the flow resistance of oil increases at the time of cold start, the pressure in the inlet port 10 rises, and the pressure in the gap 25 between the connecting pipe 48 and the inner circumference of the oil cooler 16 also rises accordingly. The urging force of the leaf spring 59 causes the leaf spring 59 to move outward. As a result, the bypass valve 52 is opened, the oil flows into the communication path 36 through the bypass hole 56, is filtered by the filter paper element 44 of the oil filter 18, and is then used for lubricating the engine through the outlet port 12. used.

In the oil cooler with the oil filter configured as described above, the bypass valve 52 that bypasses the oil having a large flow resistance at a low temperature is installed in the partition wall 30 that separates the cooling water from the oil. Therefore, the bypass passage can be configured without increasing the overall size, and the bypass valve 52 has a very simple structure in which the leaf spring 59 is held on the outer periphery of the ring 57 in which the bypass hole 56 is formed.

[0025]

[Effect of the device]

 As described above in detail in the embodiments, according to the oil cooler with the oil filter according to the present invention, the bypass passage for ensuring the lubrication of the engine when the oil flow resistance increases is formed without enlarging the entire bypass passage. In addition, the bypass valve can be constructed with an extremely simple structure, and the amount required for lubrication can be secured even during steady operation.

[Brief description of drawings]

FIG. 1 is a sectional view according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the bypass valve.

FIG. 3 is a plan view of the same.

[Explanation of symbols]

 14 mounting base 16 oil roller 18 oil filter 22 oil passage 24 cooling water passage 25 gap 30 partition wall 48 connecting pipe 52 bypass valve

Claims (1)

[Scope of utility model registration request] 1. A circle having a mounting base having an oil inlet and an outlet port for oil, and a heat exchange passage which is mounted on the mounting base and which circulates oil and cooling water flowing from the inlet port in an isolated state. Shaped multi-plate oil cooler, an oil filter mounted on the oil cooler for filtering oil that has passed through the heat exchange passage, a screw penetrating the oil cooler and screwing both ends to the mounting base and the oil filter. In an oil cooler with an oil filter, which is attached to the outlet port and a secondary side of the oil filter, the cooling water is provided at an upper end of the oil cooler and cooled by the oil cooler. A partition wall is formed to separate the communication passage through which the collected oil flows into the oil filter, and the oil A bypass valve in which a gap is provided between the inner circumference of the cooler and the connecting pipe, a bypass hole is bored in the partition above the gap, and a leaf spring for opening and closing the bypass hole is provided on the outer periphery of the bypass hole. An oil cooler with an oil filter equipped with.