JPS6236493Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an overbody with full flow bypass function.

Conventionally, this kind of overbody
An oil cleaner as shown in 1 has been proposed, but this uses a chrysanthemum tube-shaped member as the outer filter element, a shorter particulate filter as the inner filter element, and a filter between the two filter elements. It has a cylindrical aluminum foil attached to it. Therefore, within
It specifically creates a fluid passage gap between the outer overbody and has a much smaller overbody area, which results in poor overefficiency.

The present invention aims to eliminate this type of conventional drawback with a simple structure, by using chrysanthemum tube-shaped elements of approximately the same height as the inner and outer elements, and fitting them at different levels. By blocking the fitting surface of the element with an airtight cylindrical body, the amount of fluid flowing into the inner over-element is increased in particular, and the fluid flowing through the bypass channel is smoothly sucked by the main channel, and the structure is simple. The purpose is to provide an overflow system with full flow bypass function at low cost.

1 and 2, the first embodiment of the present invention will be described in detail. Reference numeral 1 denotes a base member having an inlet 2 for contaminated fluid and an outlet 3 for purified fluid; A case 4 is detachably attached to the case 4 by a mounting bolt 5 passing through the center thereof. Inside the case 4, there is provided a passing member A having a full flow bypass function centered around the mounting bolt 5. This over member A
The inner over-element 6 has a coarse mesh and is formed in the shape of a chrysanthemum tube and has a full-flow over-effect on the inside, and the outer over-element 7 has dense eyes at the same height and has the shape of a chrysanthemum tube. The element 6 is fitted so that the upper part of the element 6 projects upwardly, and an airtight cylindrical body 8 is interposed between the fitting surfaces of both the over-element elements 6 and 7 to isolate the two from each other. In the figure, 9 is a cylinder made of a porous material, 10 is a spring elastically installed between the upper end plate 19 of the inner cover element 6 and the inner surface of the case 4, and the elastic action of the spring 10 causes the above-mentioned cover member A
is pressed and supported on the upper surface of the base member 1. In the center of the lower end plate 11 of the inner over-element 6,
The mounting bolt 5 is inserted, and the outer periphery of the mounting bolt 5 is connected to a main flow passage 12 with the inside of the cylinder 9 as a fluid flow path, and has a diameter smaller than that of the cylinder 9 in order to exert an ejector effect. A throttle opening 13 is provided. Also, the lower end plate 14 of the outer over-element 7
An outlet 3 provided in the base member 1 is located in the center of the base member 1.
Between the upper end edge of the short tube 15 that fits into the upper end and the lower surface of the end plate 11 of the inner over-element 6, there is a narrow passage through which the fluid that has passed through the outer over-element 7 passes through the bypass passage 16. form 17. Furthermore, this entrance 17
The diameter of the short tube 15 forming the aperture opening 1
The diameter is slightly larger than that of No. 3.

Although the short tube 15 has been described as being provided on the lower end plate 14 of the outer over-element 7, it may be inserted alone into the outlet 3 of the base member 1, or may be formed integrally therewith. Further, from the viewpoint of workmanship, it is desirable to integrally form the upper end plate 18 of the outer over-element 7, the airtight cylinder 8, and the lower end plate 11 of the inner over-element 6.

Next, to explain the overeffect of the above embodiment, the contaminated fluid flows into the case from the inlet 2, and a part of the inflowed fluid passes through the outer overflow element 7 and passes through the flow path 7 of the inner fold of this fluid. ' to the bypass flow path 16, and the remainder of the fluid flows from the upper part of the inner over-element 6, which is constituted by the stepped portions of both over-element elements 6 and 7, to the element 6 through the flow path 6' in the outer pleats of the inner over-element 6. The water passes through the entire surface of the main flow path 12. The over-areas of both over-element elements 6 and 7 are formed in an area ratio of approximately 4:6, but since the inner over-element 6 has a coarse mesh, the fluid mainly passes through this inner over-element 6. Therefore, the flow rate of the fluid flowing through the main flow path 12 passes through the outer overpassing element 7 and flows through the bypass flow path 1.
There are far more than those flowing through 6. Therefore, due to the flow velocity passing through the throttle port 13 provided in the main flow path 12, the fluid is sucked and entrained from the port 17 communicating with the bypass flow path 16, and the combined fluid of both flow paths 12 and 16 flows. From the outlet 3, it is sent to, for example, each sliding part of the engine.

Next, details of the second embodiment will be explained with reference to FIG. 3. In this embodiment, contrary to the first embodiment, the inner over-element 6 is arranged so that the outer over-element 7 is on the upper side.
The upper end of the porous cylindrical body 9 is brought into contact with the inner surface of the upper end plate 18 of the outer over-element 7, and the upper end plate formed by the stepped fitting of both over-element elements 6 and 7 is fitted. A plurality of small-diameter ports 20 are formed in the cylindrical body 9 facing the bypass passage 16, and the fluid in the bypass passage 16 is sucked through the passages 17 by the flow velocity of the main passage 12 formed by the cylinder 9. It is designed to be guided. Incidentally, members common to those in the first embodiment are expressed by the same reference numerals.

FIG. 4 shows a third embodiment, and the structure of this embodiment is almost the same as that of the second embodiment. The diameter of the body 9 is increased, the lower end is fitted into the outlet 3 provided in the base member 1 inside the cylindrical body 9, and the lower end plate 11 of the inner over-element 6 is fitted.
A long guide tube 21 attached to is disposed.
The mounting bolt 5 is inserted into the center of the upper end plate 19 of the inner side over-element 6, and a throttle port 13 is provided between the mounting bolt 5 and the outer periphery thereof, which is connected to the main flow path 12. The upper end of the guide tube 21 faces near the lower part of the guide tube 13, and the main flow path 12 is formed by the tube body 9 and the guide tube 21 into an inverted U shape. In the figure, 22 is a port provided in the upper part of the cylindrical body 9 similarly to the second embodiment. In this embodiment as well, members common to those in the first embodiment are designated by the same reference numerals.

As described above, according to the present invention, a large amount of fluid is passed through the inner over-element from the inner over-element surface exposed in the case due to the difference in level and the space formed by the pleats, and the outer over-element consisting of dense meshes allows the fluid to flow through the inner over-element, for example, into the engine. Approximately 3 to 10% of the lubricating oil flowing into the
You can let it go to a certain extent. Therefore, it is the inner passing element that passes most of the amount of lubricating oil required by the engine, etc., and since this element has a coarse mesh that is difficult to clog, particles finer than this coarse mesh pass through. Due to the circulation, the particles are removed by the trapping action of the outer filter element. For this reason, it is desirable that the outer over-element has as large an over-area as possible, and according to the present invention, this requirement can be easily met since the outer over-element is made of paper and has a chrysanthemum tube shape.
In addition, the fluid in the bypass flow path can increase the pressure difference between the inside and outside of the outer over-element by utilizing the effect of being sucked by the large amount of fluid flowing through the main flow path, and this pressure difference increases the over-efficiency of the outer over-element. It has great practical effects, such as being able to measure

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view, Figure 2 is Figure 1A-
The sectional view taken along line A, and FIGS. 3 and 4 are partially cutaway front views of another embodiment. DESCRIPTION OF SYMBOLS 1... Base member, 2... Inlet, 3... Outlet, 4... Case, 6... Inner over-element, 7...
Outer over-element, 8... Airtight cylinder, 9... Porous cylinder, 10... Spring, 12... Main channel, 13... Restriction port, 16... Bypass channel, 17, 20, 2
2... Entrance.

Claims (1)

[Scope of utility model registration request] An outer over-element shaped like a chrysanthemum tube with dense eyes and an inner over-element shaped like a chrysanthemum tube with roughly the same height and coarse eyes are provided in the case in a fitted state with different levels, and both of the above-mentioned over-elements are fitted. The fitting surface of the element is shut off by an airtight cylinder, and the bypass flow path for the fluid that has passed through the outer over-element is communicated with the main flow path for the fluid that has passed through the inner over-element, and the fluid flowing through the bypass flow path is made to be in communication with the main flow path for the fluid that has passed through the outer over-element. No suction into the tract,
The overbody is characterized by having both full flow and bypass functions.