JPH0244806Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to an oil filter, and more specifically, to improving the efficiency of removing sludge, carbon, etc. from oil filtered by the oil filter.

<<Prior art>> Conventional oil filters are generally so-called dual-type filters, in which a single filter case is mounted on a mounting base, and a bypass element and a full flow element are arranged in a stacked manner within the filter case. Ta. The bypass element is used to purify the oil in the oil pan. After the oil flowing from the oil pan is filtered by the bypass element, it is returned to the oil pan as it is. It has been used. On the other hand, the full flow element is used to remove large sludge and supply a relatively large amount of oil for use as lubricating oil in the engine gear rally, and uses relatively coarse filter paper.

<<Problems to be Solved by the Invention>> However, in the above-described conventional oil filter, most of the oil in the oil pan is filtered through a full-flow element made of coarse filter paper. On the other hand, in order to extend the life of the oil, it is necessary to remove a large amount of carbon present in the oil. However, in a full-flow element through which a large amount of oil passes, the filter paper is coarse, making it impossible to remove small particles of carbon from the oil. As a result, conventional oil filters cannot sufficiently remove carbon from the oil, causing the oil to deteriorate more quickly, resulting in a shorter oil replacement life and being uneconomical.

As a solution to this problem, it is possible to mount two of the conventional dual-type filters on a mounting base, but according to the knowledge of the inventor of the present application, there are problems as follows.

In other words, if you remove even the smallest particles of carbon from the entire amount of oil at the beginning of oil injection,
The oil in the oil pan is very clean, so after that it is smaller and smaller than before.
Even a full flow element with coarse mesh can perform the filtration function satisfactorily. This is especially true as the road conditions have improved in recent years, and there is less possibility that dirt (dust) from the intake system or the like will get mixed into the oil during use. As a result, installing two dual types increases the volume of the full-flow element, that is, adds an unnecessary full-flow element, which results in a waste of space and filters.

The present invention was developed in view of the above-mentioned problems, and its purpose is to mount and use a filter without waste, and to remove a large amount of carbon contained in oil. The purpose of the present invention is to provide an oil filter that can extend its replacement life.

<Means for Solving the Problems> In order to achieve the above-mentioned object, in the oil filter according to the present invention, a first filter and a second filter are respectively disposed on the mounting base, and the first filter is a bypass filter in which only the first bypass element is housed, and the second filter is a dual-type filter including a second bypass element and a full flow element, and The second bypass element was arranged in parallel with the oil pan.

≪Operation≫ Two filters are installed on the mounting base, and only the bypass element is provided in one filter, and the other is a dual-type filter, so that the capacity of the bypass element in the entire oil filter is increased. A large amount of carbon in oil can be removed. In addition, since a relatively large amount of oil is constantly filtered by the bypass element, the oil in the oil pan remains extremely clean, and sufficient filtration function can be maintained even if the volume of the full flow element is reduced. .

<<Example>> Hereinafter, a preferred embodiment of the oil filter according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a first embodiment of an oil filter according to the present invention.

As shown in the figure, in the present invention, a first filter 12 and a second filter 14 are respectively mounted on a mounting base 10. Both filters 12 and 14 are cartridge type oil filters, and the filters themselves are substantially the same as conventional ones. That is, the first filter 12
A first bypass element 18 made of fine filter paper is disposed in a filter case 16 whose bottom end is open. A base plate 20 is caulked to the opening of the filter case 16. The base plate 20 has a through hole 20a for oil inflow at the peripheral edge thereof, and a through hole 20b for oil outflow at the center thereof. The through hole 20a for oil inflow is connected to a first inlet port 22 formed in the mounting base 10, and the through hole 10b for oil outflow is connected to a first outlet port 24 formed in the installation base 10. They are arranged in communication with each other.

Further, the second filter 14 has a full flow element 28 made of coarse filter paper and a second bypass element 30 made of fine filter paper arranged vertically in a stacked state in a filter case 26 whose bottom end is open. ing. Further, a base plate 32 is caulked to the opening of the filter case 26, and a through hole 32a for oil inflow is bored in the peripheral edge of the base plate 32, and a second inlet in the mounting base 10 is formed. It communicates with port 34. And this second inlet port 3
4 is formed in the mounting base 10 to be branched from the first inlet port 22 for supplying oil into the first filter 12. Furthermore, a relatively large diameter through hole 32b is bored in the center of the base plate 32, and a central pipe 34 whose lower end is fixed to the mounting base is inserted through the center of the hole 32b. This central pipe 34
has its upper end extended to the purification side of the full flow element 28, and the full flow element 28
A first outlet port 36 for supplying the filtered oil to an engine gear rally (not shown).
It is communicated with. In addition, the mounting base 10
A third outlet port 38 is formed around the inner central pipe 34, through which the oil filtered by the second bypass element 30 passes.

Further, the first outlet port 36 is connected to the engine gear rally side which requires lubricating oil. In addition, the first outlet port 24 and the third
The outlet port 38 of the mounting base 10
The oil pans are connected to an oil pan (not shown) from the passage after they merge. The first and second bypass elements 18, 3
The filtered oil is returned to the oil pan as is.

Next, the operation related to this embodiment will be explained as follows.
The oil sent from the oil pan flows into the first filter 12 through the first inlet port 22, and the bypass element 18 in the first filter 12 captures a large amount of carbon in the oil.
After being purified, it is directly returned to the oil pan via the first outlet port 24. Further, a part of the oil sent into the first inlet port 22 from the oil pan is sent into the second filter 14 via a central pipe 34 that is branched from the first inlet port 22. is flowing into the country. A portion of the oil flowing into the second filter 14 is filtered by the full flow element 28 and then supplied to the engine gear rally through the central pipe 34 and the first outlet port 36.
Further, after the remaining oil is removed to the extent of carbon by the second bypass element 30, it merges with the first outlet port 24 in the mounting base 10 via the third outlet port 38, and directly flows into the oil pan. be returned. In this way, since the volume of the bypass element becomes very large, a large amount of carbon in the oil can be removed, thereby extending the life of the oil. Further, since a large amount of oil in the oil pan is always purified by the bypass element, the full flow element in the second filter 14 can function satisfactorily even if its volume is small.

Next, a modification of the oil filter according to the present invention is shown in FIG. In this modification, the first and second filters each use a center bolt type filter. As shown in the figure, in this modification, each filter 1 is attached to the mounting base 10'.
This embodiment differs from the above embodiment in that a center bolt 40' is used as the means for attaching the parts 2' and 14'.
In other respects, only the first bypass element 16' is disposed in the first filter 12', and the full flow element 28' and the second bypass element 30 are disposed in the second filter. The arrangement of ' is the same as in the above embodiment.

Note that the oil filter according to the present invention is not limited to the embodiments described above, and for example, one of the first and second filters may be a cartridge type filter, and the other may be a center bolt type filter. Also good. Furthermore, in the embodiment, the first and second inlet ports and the first and third outlet ports are merged within the mounting base, but they are not merged within the mounting base and are connected outside the mounting base. They may be connected to the oil pan without merging or merging as is.
Furthermore, the type of filter may be a so-called chrysanthemum-shaped filter or a stacked filter type.

<<Effects of the invention>> As described above, according to the oil filter of the present invention, two filters are mounted on the mounting base, one filter is provided with only a bypass element, and the other filter is a dual type filter. Furthermore, by arranging the bypass elements in both filters in parallel to the oil pan, the capacity of the bypass elements in the entire oil filter can be increased, making it possible to remove a large amount of carbon from the oil. can. As a result, oil life is extended, replacement life is extended, and economic efficiency is improved. In addition, the required amount of oil to be supplied to the engine gear rally is determined in advance by the volume of the full flow element, and in this invention, only the bypass element is provided in one filter, and only the other filter has a full flow element with a predetermined volume. Since the elements are arranged, there is no waste in mounting and using the filter.

Furthermore, a large amount of oil is constantly filtered using a bypass element made of fine filter paper, and due to improved road conditions, there is extremely little risk of new dirt getting mixed into the oil from the air supply system etc. during use. Therefore, the oil in the oil pan is much cleaner than conventional oil pans, and there is no problem even if you use a filter with a low filtration function, such as a smaller full-flow element or a coarser filter paper. It is possible to produce various effects, such as not producing.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of an oil filter according to the present invention, and FIG. 2 is a sectional view showing a modification thereof. DESCRIPTION OF SYMBOLS 10... Mounting base, 12... First filter, 14... Second filter, 18... First bypass element, 28... Full flow element, 30... Second bypass element.

Claims (1)

[Scope of utility model registration request] A first filter and a second filter are respectively disposed on the mounting base, and the first filter is connected to the first filter.
The second filter is a dual-type filter including a second bypass element and a full flow element, and the first bypass element and the second bypass element are housed in a bypass filter. An oil filter characterized in that a bypass element is arranged in parallel with an oil pan.