JPH039771Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a filtering device for circulating oil such as automobile engine oil.

In conventional engine oil filtration means,
As shown in FIG. 10, a filter device 4 is interposed in the middle of an oil feed passage 3 piped between an oil pan 1 and an engine lubricating section 2 constituting an operating load section. 4 to bypass passage 5
The structure is such that the oil sucked from the oil pump 6 is guided to the lubricating part 2 through a filter 7 with a coarse filtration particle size (hereinafter referred to as mesh).
A method is adopted in which a part of the oil that has flowed into the filter device 4 is led to the bypass passage 5 through a fine-mesh filter 8 and drained into the oil pan, or as shown in FIG. A method is adopted in which the oil is first filtered through a coarse filter 7, and then most of it is introduced into the lubricating section 2, and at the same time, it is passed through a fine filter 8 into the bypass passage 5. In both cases, the oil discharged from the lubricating section 2 after operation is returned to the oil pan 1 through a return passage 10.

By adopting such a filtration method, it is possible to ensure the supply of the oil flow rate necessary for the operation of the lubricating part 2, and also to remove the fine dust contained in the return oil that has flowed into the oil pan 1 when it enters the bypass flow. A fine-mesh filter 8 captures and removes the particles.

However, since this conventional filtration method requires piping for the bypass passage 5, it has the disadvantage that the structure becomes somewhat complicated.
There is a problem in that the fine dust captured and accumulated by the filter 8 tends to fall off due to the vibration of the filter devices 4 and 9 and flow into the feeding passage 3.

Therefore, an object of the present invention is to provide a circulating oil filtration device that has a simple structure and prevents captured fine dust from flowing out into the feeding passage.

In order to achieve this purpose, the configuration of the present invention includes an oil supply passage piped between the oil pan and the oil inlet of the required operating load section, and an oil supply passage piped between the oil outlet of the operating load section and the oil pan. An oil return passage piped in between and a filter unit interposed to interrupt the oil supply passage, with a plurality of filter plates having different filtration particle sizes connected in a direction perpendicular to the oil flow. It has a structure in which a filter unit is formed by being stretched in a state.

However, in such a structure, among the multiple filter plates with different filtration particle sizes installed in the filter unit, the one with a large filtration particle size can handle a large flow of oil, and the one with a small filtration particle size can handle fine particles. It acts to remove them sequentially. This eliminates the need for bypass piping, and also makes it possible to arrange the strainer plates in such a way that the debris that has fallen off the strainer plates is less likely to flow into the feeding passage.

The structure of the present invention will be described in detail below based on the first to third embodiments shown in the drawings.First, the structure of the embodiments described below will be explained with reference to FIG.

An oil pump 6 is interposed in the middle of an oil feed passage 12 piped between the oil pan 1 and the operating load section 11, and a reservoir of the oil pan 1 is provided at the lower end of the oil feed passage 12. A filter unit F immersed in oil is installed, and the oil sucked up from the oil pan 1 through the filter unit F by the suction of the oil pump 6 is transferred to the feed passage 1.
The return oil supplied to the working load section 11 through the return passage 10 and discharged from the working load section 11 is configured to flow back to the oil pan 1 through the return passage 10.

Hereinafter, the formation mode of the filtration device will be described for each example.

First embodiment (Fig. 2A, Fig. 3) The filter unit 13 in this embodiment is as follows:
The skeleton of the retainer 14 is a hot water tank type container with a large number of through holes 14a, and the entire body is immersed in the oil reservoir of the oil pan 1. It is integrated with the periphery of the binder 15 by a binder 15.

Further, an opening 14b forming an oil outlet is bored at one location on the upper surface of the retainer 14, and the edge of the opening is fixed to the flange 12a at the lower end of the oil feed passage 12 with a connecting bolt 16. The coupling bolts 16 passing through the retainer 14 in the vertical direction also serve to maintain the upper and lower distances between the retainers 14 by the action of the bushings 17 fitted on the outside.

Further, a coarse strainer plate 18 is stretched on the lower surface of the retainer 14, and a fine strainer plate 19 is stretched on the upper surface of the retainer 14 except for the opening 14b.

In the filtration device of the first embodiment equipped with the filter unit 13 configured in this way, the oil sucked into the feed passage 12 is transferred to the retainer 1.
4 through the through holes 14a on the upper and lower surfaces of the retainer 14.
When the oil flows into the inner space and passes through the through hole 14a on the upper surface, fine dust is captured on the upper surface of the strainer plate 19, and when the oil flows through the through hole 14a on the lower surface, it Thin debris is captured on the lower surface of the strainer plate 18 and the oil is purified.

It should be noted that when the debris captured by each of the strainer plates 18 and 19 falls off, it falls into the oil pan 1 and does not enter the inner space of the retainer 14.

Therefore, as in the case where a bypass passage is provided as in the conventional structure, it is possible to ensure a sufficient flow rate of oil supply to the operating load section 11, and at the same time, the accumulated oil in the oil pan 1 can be effectively purified. Is possible.

Similar example to the first embodiment (see FIG. 2B) The filter unit 20 in this similar example is as follows:
Strain plate 2 stretched over the lower and upper surfaces of the retainer 14
The structure is the same as that of the filter unit 13 described above, except that the coarseness of the meshes 1 and 22 are interchanged, that is, the strainer plate 21 on the lower surface has fine meshes, and the strainer plate 22 on the upper surface has coarse meshes.

Therefore, the operation of the filtration device in this case is the same as described above.

Second embodiment (see FIGS. 4A and 5) The filter unit 23 in this embodiment is as follows:
A coarse strainer plate 18 is stretched on the lower surface of the retainer 14, and a coarse strainer plate 22 is stretched on the upper surface of the retainer 14. However, the right half of the strainer plate 22 on the upper surface and the retainer A fine-mesh half-divided strainer plate 24 is sandwiched between the upper surface of the filter plate 14 and the upper surface of the filter plate 14 .

Similar example (part 1) to the second embodiment (see FIG. 4B) The filter unit 25 in this embodiment is as follows:
A coarse mesh strainer plate 18 is extended on the lower surface of the retainer 14, and a medium mesh strainer plate 26 is extended on the upper surface of the retainer 14. A split strainer board 24 is sandwiched.

Similar example (part 2) to the second embodiment (see Fig. 4C) The filter unit 27 in this embodiment is as follows:
A medium-mesh strainer plate 28 is extended on the lower surface of the retainer 14, and a coarse-mesh strainer plate 22 is extended on the upper surface of the retainer 14. A half-split strainer board 24 is sandwiched.

Third embodiment (see FIGS. 6 to 8) The filter unit 29 in this embodiment is as follows:
A coarse strainer plate 8 is stretched on the lower surface of the retainer 14, and a coarse strainer plate 22 is stretched on the upper surface of the retainer 14, and the right semicircular portion of the outlet opening 14a of the retainer 14 In addition to a fine-mesh semicircular strainer plate 30 extending horizontally in a cantilevered manner, a large number of small saucers 31 are arranged along the lower side of the strainer plate 30, and these saucers 3
1 serves to catch debris that has fallen off the bottom surface of the strainer plate 30 and prevent it from being mixed into the oil flowing around it.

By the way, each of the filter units 23, 25, 27, 29 of the second embodiment and the third embodiment described above
The functions and effects of the filtration device of each embodiment equipped with these filter units are basically the same as those of the first embodiment. It is desirable to select a structure that provides the best effect in accordance with the actual characteristic values of each part of the oil circulation system.

Furthermore, the configuration system of the embodiment of the present invention includes the configuration shown in FIG. 9, that is, each filter unit 13, 20, 23, 25, 27, 2
The oil reservoir 32 in which the oil filter 9 is immersed may be provided in the middle of the oil supply passage 12, and the filtering effect in this case remains the same.

As described above, according to the circulating oil filtration device according to the present invention, a plurality of strainer plates having different filtration particle sizes are arranged in parallel in the filter unit immersed in the oil reservoir at the lower end or in the middle of the oil feeding passage. In addition, since the filter unit has a structure in which a part of the filter unit is expanded in a polymeric manner, the filtration performance of the filter unit with a single structure is improved, and the flexibility and applicability of the unit can be expanded. This has the effect of improving the practicality of the oil circulation system.

[Brief explanation of the drawing]

Fig. 1 is a system diagram of a configuration system according to an embodiment of the present invention, Fig. 2A is a cross-sectional view of a main part of a circulating oil filtration device showing a first embodiment of the present invention, and Fig. 2B is a system diagram of a configuration system according to an embodiment of the present invention.
3 is a cross-sectional view of a main part of a filtration device of a similar example to the embodiment, FIG. 3 is a plane sectional view taken along the - line in FIG. 2A, and FIG. 4A is a sectional view of a main part of a filtration device showing the second embodiment , FIG. 4B and FIG. 4C are sectional views of essential parts of a filtration device similar to the second embodiment, and FIG.
6 is a cross-sectional view of the main part of the filtration device showing the third embodiment, FIG. 7 is an enlarged view of the portion shown in FIG. 6, and FIG. 8 is a cross-sectional view taken along the line - of FIG.
9 is a system diagram of another configuration system in the embodiment of the present invention, FIG. 10 is a system diagram of a configuration system of a conventional filtration device, and FIG. 11 is a system diagram of another configuration system of a conventional filtration device. It is a system diagram of a configuration system. 1...Oil pan, 10...Oil return passage,
11... Operating load section, 12... Oil feeding passage,
13, 20, 23, 25, 27, 29...filter unit, 14...retainer, 14a...through hole, 14b...opening, 18, 19, 21, 22,
24, 26, 28, 30... strainer board, 31... saucer, 32... oil reservoir.

Claims (1)

[Claims for Utility Model Registration] 1. An oil supply passage piped between an oil pan and an oil inlet of a required operating load section, and an oil supply passage piped between an oil outlet of the same operating load section and the oil pan. The filter unit is connected to the oil return passage and the oil supply passage, and is connected to the oil pool in the oil pan or the oil supply passage by using a hot water tank type container with many through holes as a retainer. A filter unit that is immersed in water, has an opening made in the upper surface of the retainer connected to an oil supply passage, and has a plurality of strainer plates having different filter particle sizes spread over the entire upper and lower surfaces of the retainer. A circulating oil filtration device comprising: 2. The circulating oil filtration device according to claim 1, wherein a strainer plate having a fine filtration particle size is superimposed on another strainer plate and stretched over a part of the upper surface of the retainer. 3. A strainer plate is stretched horizontally over a portion of the upper opening area of the retainer, and a tray is held in a cantilevered manner on the underside of the strainer plate to catch the debris that falls from the strainer plate. A circulating oil filtration device as claimed in claim 1 of the registered utility model.