JPS62735Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an engine air cleaner, and more specifically, to an oil-impregnated air cleaner that has an intermediate function between a dry air cleaner and an oil bath air cleaner.

Conventionally, a filter member with a large number of voids impregnated with oil to improve the dust trapping function is already well known from Utility Model Application Publication No. 126921/1983, but due to the installation space etc. If the width direction is restricted, the filter member is formed into a vertically long air cleaner case with a large height, and a filter member with a large height is disposed within the vertically long air cleaner case.

Therefore, if a filter member impregnated with oil is installed in an air cleaner with such a large height dimension, if the height of the filter member exceeds 100 mm, a phenomenon called "oil drop" will occur in which the impregnated oil descends. occurs.

As a result, the oil impregnation density in the upper part of the filter member where the oil drips is significantly reduced, and the mesh of the oil-impregnated type filter member is rougher than that of the filter member applied to other dry type air cleaners. , the problem arises that dust cannot be captured properly and the air purifying power of the air cleaner is reduced.

This invention was developed in view of the above-mentioned conventional problems, and the object is to provide an engine air cleaner that can prevent oil from dripping into the filter member and can accurately trap dust and other particulates.

Embodiments of this invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional front view showing an engine air cleaner according to this invention, in which 1 is an air cleaner case, 2 is an annular filter member, and 3
4 indicates an air inlet, and 4 indicates an air outlet. The air inlet 3 communicates with an annular air passage 5 formed on the outer periphery of the filter member 2.
It communicates with the air passage 6 on the inner circumference.

As shown in FIG. 2, the filter member 2 is arranged vertically inside the air cleaner case 1 while being bent in a meandering manner, and has a large number of gaps (not shown).
is impregnated with oil.

Therefore, from the air inlet 3 to the annular air passage 5
As the air flows through the filter member 2, fine particles such as dust are captured by oil impregnated in a large number of voids, and the air is purified and reaches the air passage 6, where it passes through the air outlet 4. It is then sucked into the engine.

For example, the filter member 2 has a diameter of 25 mm in the vertical direction.
At intervals of 100 mm to 100 mm, oil drop prevention belts 7 extending horizontally and closing or reducing the above-mentioned gaps are formed.

The oil drop prevention band 7 can be sewn with a thread 8 as shown in Fig. 3a, or the density of the voids in the oil drop prevention band 7 can be adjusted to the density of the voids in the other parts 2a and 2b as shown in Fig. 3b. The voids are closed or reduced by making them larger than the density, or by printing and impregnating them with a silicone solvent 9 as shown in FIG. 3c.

Since such an oil drop prevention band 7 is formed, even if the height dimension of the filter member 2 increases, oil drop can be prevented and the oil impregnation density in the upper part of the filter member 2 can be ensured. Dust can be captured accurately.

As explained above, according to this invention, the filter member extends horizontally at a predetermined location in the vertical direction,
Since the oil dripping prevention zone is formed in which the voids are closed or reduced, there is an advantage that oil dripping can be prevented and fine particles such as dust can be appropriately captured.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing an engine air cleaner according to this invention, FIG. 2 is a partial perspective view of a filter member, and FIGS. 3a to 3c are explanatory views of an oil drop prevention band. 1... Air cleaner case, 2... Filter member, 6... Oil drop prevention band.

Claims (1)

[Scope of utility model registration request] In an engine air cleaner in which a filter member having a large number of voids is impregnated with oil and the filter member is vertically disposed in an air cleaner case, a filter member is provided that extends horizontally at a predetermined position in the vertical direction of the filter member to fill the voids. An air cleaner with a zone to prevent oil from clogging or decreasing.