JPS5987010A - Filter - Google Patents

Abstract

PURPOSE:To miniaturize the entire constitution of a filter, by forming a flow passage between the outside of a second filter element arranged to the outer periphery of a first filter element and the inside a case. CONSTITUTION:Lubricant containing carbon particles in the lubricating part of an internal combustion engine reaches the lubricant inflow passage 15a of a cap 15 and flowed into a lubricant flow passage 16 while a check valve 12 is opened by the pressure thereof. In this passage 16, a part of the lubricant is flowed into a second filter element 4 through the lubricant passing orifice 6a of an end plate 6 while the other part of the lubricant is flowed into a first filter element 1 through the lubricant passing orifice 7b of an end plate 7. In this case, fine foreign matters such as carbon particles in the lubricant are collected by the second filter element and coarse foreign matters such as sludge or a metal powder are collected by the first filter element 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a 7 filter suitable for use in a lubricating oil filter for an internal combustion engine.

Conventionally, this type of filter was manufactured by the Special Publication No. 4.5-39595.
There is something described in the No. Such a filter is provided with two ring-shaped filtration elements I, which form a flow path between the filter elements, and have a structure in which fluid does not flow to each of the two filtration elements through the flow path. be.

However, in this conventional example, since a flow path is formed between two l-filtration elements, there is a problem that the structure becomes large-sized.

It is an object of the present invention to provide a structure for an overheating device that solves the above-mentioned problems.

The present invention will be explained in detail below using specific examples. 1st
In the drawings to FIG. 3, reference numeral 1 designates an eleventh filter element, which has a ring shape and is folded into a chrysanthemum-like cross section.

2 is a cylindrical metal reinforcing member, and this member 2 is provided with a large number of small holes 2a. Reference numeral 3 denotes a cylindrical metal partition member, and this member 3 has a structure in which no small holes are provided. This member 3 is shorter in length than the reinforcing member 2 described above. The first filter element 1 is accommodated in a ring-shaped space between the reinforcing member 2 and the partition member 3.

Reference numeral 4 designates a 22nd filter element, which has a ring shape and is constructed by winding a thin paper-like material around the partition member 3 in a roll shape. A ring-shaped filter paper 21 is provided downstream of this element 4. 5 is a non-porous cylindrical metal reinforcing member.

Reference numeral 6 denotes a ring-shaped metal end plate, and this end plate 6 is provided with a plurality of protrusions 6a for supporting the second filter element 4 and supports the first filter element 1. A plurality of oil holes 6b are provided which open on the side of the end. The end plate 6 having such a structure is attached to one end of the second filtration element 4 so as to cover it, and is tightened and fixed to the end of the reinforcing member 5 over the entire circumference.

Reference numeral 7 denotes a ring-shaped end plate made of metal, and this end plate 7 has an opening 7a in the center and a plurality of oil holes 7b on the sides. The end plate 7 is attached to one end of the eleventh filtration element 1 so as to close it, and completely covers the end of the reinforcing member 2 and the portion of the end plate 6 on the partition member 3. It is tightened and fixed around the circumference.

8 is a ring-shaped metal hoist board, and this end plate 8 has a first
A recess 8a shaped to receive the other end of the filtration element 1, a plurality of protrusions 8b for supporting the second filtration element 4, and a plurality of oil holes 8C are provided. The end plate 8 having such a structure has the first filtration element 1 and the 21st filtration element 1.
The other end of the filtration element 1.4 is closed and attached to the end.The first end of the filter element 1 is attached to the end plate 7.4 with resin adhesives 9 and 10.
It is glued to 8. 11 is a ring-shaped metal end plate, and a ring-shaped bulge 1i is provided near the center of this end plate 11.
A is integrally processed, and this bulging portion 11a is provided with a plurality of oil passage ports X1b. Further, a plurality of embossed portions 11C are provided in the plate 11 at positions corresponding to the ring plane of the concave portion 8a of the end plate 8.

The end plate 11 having such a structure is fastened to the end plate 8 at its center and to the end of the reinforcing member 5 with the end plate 8 sandwiched between the ends.

Reference numeral 12 denotes a ring-shaped check valve made of a rubber material, and this reverse valve 12 is fitted into the bulge 11a of the end plate 11. This check valve 12 has an oil inlet 11 in the end plate 11.
An oil passage port 12a is provided at a position corresponding to b.

Reference numeral 13 denotes a metal cylindrical case, which has a structure in which one end is closed and the other end is open.

The case 13 accommodates the first and second filters 1 and 4 described above.

A sealing ring gasket 1 is attached to the open end of the case 13.
4 and the metal cap 15 via the metal ring body 20
is attached with bolts 16.

This Camp 15 has an internal combustion engine /r! Oil inflow (?8L5a) that leads the lubricating oil from l sliding part (not shown), oil outflow path 15b that leads the lubricating oil cleaned in the first filtering element 1 to the βi sliding part, second fireside element 4 Oil outflow path 15 that leads cleaned lubricating oil to an oil sump (not shown)
C1 and a flow rate restriction hole 15d for regulating the amount of oil flowing out to this outflow path 15C.

The ring-shaped space between the case 13 and the reinforcing member 5 of the second filter element 4 is filled with oil as a passage 16 .

In the figure, 17 is the drain plug, and 18 is the spring 1.
8a1 A relief valve consisting of a metal cylinder 18b and a valve body 18C. Reference numeral 19 indicates a spring.

The operation of the above configuration will be explained. 1 and 2, the lubricating oil 2 containing carbon (aggressive particles, etc.) that flows into the lubricant of the internal combustion engine reaches the oil inlet passage 15a of the can knob 15. Therefore, the check valve 12
is opened and flows into the oil flow path 16. Here, some of the oil flows into the second filter element 4 through the oil passage hole 6b of the end plate 6. Further, a part of the oil flows into the seventeenth filter element 1 through the oil passage hole 7b provided in the end plate 7.

Incidentally, the oil that has flowed into the eleventh filtration element 1 is filtered and cleaned by the element 1, passes through a large number of small holes 2a of the reinforcing member 2, reaches the oil outflow path 15b, and after lubricating the lubricating parts of the internal combustion engine, the oil is Return to the reservoir (not shown).

On the other hand, the oil that has flowed into the second swamp filter element 4 passes in the axial direction of the element 4 and is cleaned, and the oil passing through the oil passage hole 8 of the end plate 8
The oil returns to the oil reservoir through the gap between the C1 end plate 8 and the end plate 11, the oil passage port 11b1 of the end plate 11, the flow rate restriction hole 15d, and the outflow path 15c.

Here, since the oil outflow path on the second filtration element i/4 side has the flow rate restriction hole 15d, the amount of oil flowing into the 22nd filtration element 4 is greater than that on the 11th filtration element 1 side. It will be less. Since the gAz filter element 1 cleans the oil in the oil path that bypasses the lubricating part of the internal combustion engine, the heavy flow of oil to the element 1 may be small. By the way, the amount of lubricant is about 90 6
is made to flow into the first filtering element 1, and the remaining approximately 10% flows into the second filtering element 4.

Note that fine foreign particles such as carbon particles in the oil are secondary to
Coarse foreign matter such as sludge and metal powder is captured by the first filter element 1 . When the operation of the internal combustion engine is stopped, the check valve 12 comes into pressure contact with the inner surface of the cap 15.

The present invention is not limited to the above embodiments, and various modifications are possible as follows.

(11 The second filtration element 4 is made of a thin paper-shaped filter paper, but for example, it is made of a so-called layered material such as a combination of "cotton thread ten wool", "wool fiber and polyester fiber", or wool fiber). Alternatively, it may be made of paper that has been folded into a chrysanthemum-shaped cross section to make it denser.

(2) P where the IN filtration element 1 itself is rolled up
It is also possible to construct it from paper.

(3) The cap 15 and the case 13 are attached with bolts 16, and by removing the bolts 16, the first bolt is removed from the inside of the case 13. Although the structure is such that the second filter elements 1 and 4 can be replaced, it is of course possible to integrate the image elements 1 and 4 and the case 13 and have a structure in which the image elements 1 and the case 13 can be replaced together.

(4) First. Although the heads of the second element 1.4 are arranged so as to form a step, both heads may be arranged on the same line.

(5) In the above embodiments, the present invention was used as an oil filter for a diesel internal combustion engine, but it can also be used for an oil filter for a general gasoline internal combustion engine, or as an oil filter for hydraulic equipment of industrial machinery. can also be used. Furthermore, it is of course applicable not only as an oil filter but also as a general liquid filter.

Varnish 1 In short, according to the present invention, since there is no flow path between two filtration elements that allows fluid to flow into these filtration elements, the overall configuration can be downsized, and therefore the 1 filtration system is small and has a large filtration area. We can provide equipment.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional perspective view showing the main part of FIG. 1. DESCRIPTION OF SYMBOLS 1...Filtration element, 4...Second filtration element, 13...Case, 16...Flow path. Representative Patent Attorney Takashi Okabe - Figure 2 Figure 3 1c M-

Claims (1)

[Claims] It is equipped with a ring-shaped 17th filtration element, a link-shaped W27 filtration element arranged around the outer periphery of the 12th filtration element, and a case that accommodates both of these 7 filtration elements. 7. A filtration device in which a flow path is formed between the outside of the element and the flow path is communicated with each end G of the filtration element.