KR20010056018A - Air cleaner structure for vehicles - Google Patents

Abstract

PURPOSE: An air cleaner for a vehicle is provided to prevent the leakage of oil in an internal combustion engine by restraining the excessive/asymmetric scattering of oil in an air cleaner. CONSTITUTION: An air cleaner includes a cylindrical element case(12), an intake pipe(14) placed tangentially at the upper end of the element case, a filter element(16) located at the center of the element case to form a center point of a swirl of the sucked air flowing in through the intake pipe, an exhaust pipe(18) placed at the upper center of the element case to guide the symmetric flow of exhaust gas in the element case, and an oil cup(20) mounted below the element case. Intake air collides with the entire area of oil in the oil cup while falling. Thereafter, the filter element firstly filters the air. The filtered air is discharged through the exhaust pipe. As the air uniformly collides to the oil while swirling, the scattering of the oil is minimized. According to the exhaust pipe at the center of the case, the air is symmetrically discharged.

Description

Air cleaner structure for vehicle {AIR CLEANER STRUCTURE FOR VEHICLES}

The present invention relates to a vehicle air cleaner, and more particularly to a vehicle air cleaner structure that can improve the flow structure of the air flowing into the air cleaner to improve the filtration performance and reduce the generation of noise.

For example, a vehicle internal combustion engine generates propulsion power of a vehicle by inhaling air, mixing it with fuel, and burning the fuel. When harmful substances such as dust contained in the air are sucked into the internal combustion engine, the cylinder or piston is damaged, and the engine oil It may be mixed with the back to promote wear of other lubrication parts.

In order to prevent this, the vehicle is equipped with an air cleaner at an air intake part to filter the air. The types of air cleaners are dry, wet, and combination types depending on the filtration type. And the like.

Among them, the wet air cleaner is a type that filters intake air through an element drawn through oil, and inert air collides with the oil surface to separate dust. It works by filtering out dust again as it passes.

Looking at an example of the wet air cleaner in more detail, as shown in Figure 4, an element case (Element Case) formed to a predetermined height (Oil Cup) mounted to the lower portion of the element case (102); 104 is combined, the inflow of air is through the intake pipe 108 through the central portion of the filtering element 106 installed in the element case 102, the outflow of the filtered air is the element case 102 Through the exhaust pipe 110 formed on the upper one side of the.

Looking at the filtration operation of the air cleaner configured as described above, the air is sucked through the intake pipe 108 by the negative pressure of the internal combustion engine acting in the element case 102, the intake air is the oil in the oil cup (104) While strongly hitting the 112, dust or the like therein is adsorbed to the oil 112 and filtered primarily, the filtration element 106 is soaked in the oil by the swelling of the oil hit by the intake air, and the intake air is filtered. When passing through the 106, the dust is filtered again, so that only clean air is supplied to the internal combustion engine through the exhaust pipe 110 on one side of the element case.

By the way, the wet air cleaner structure as described above, because the air is sucked through the center portion of the element case is excessive amount of oil scattered, the exhaust pipe is installed on one side of the element case is asymmetrical scattering of air is made, Due to this excessive scattering and asymmetrical scattering, there was a problem that a part of the oil did not adhere to the filtration element and flowed into the internal combustion engine through the exhaust pipe.

When oil flows into the internal combustion engine through the exhaust pipe of the element case and mixes with the fuel, incomplete combustion occurs in the combustion chamber, thereby degrading the performance of the internal combustion engine, shortening the life, and increasing vibration and noise. .

Therefore, the present invention is to solve the above problems, an object of the present invention is to provide a vehicle air cleaner structure that can prevent the leakage of oil to the internal combustion engine by preventing excessive scattering and asymmetrical scattering of the oil in the air cleaner. There is.

1 is a schematic cross-sectional view of an air cleaner according to the present invention;

2 is a plan view of an air cleaner according to the present invention;

3 is a cross-sectional view of the A-A portion of FIG.

4 is a schematic diagram of a wet air cleaner according to the prior art.

<Description of the symbols for the main parts of the drawings>

12: Element case 14: Intake pipe

16 filter element 18 exhaust pipe

20: Oil Cup 22: Oil

24: Bolt 26: Netting

28: bracket

In order to achieve the above object, the present invention,

A cylindrical element case; An intake pipe disposed tangentially at an upper end of the element case; A filtering element disposed at the center of the element case so as to form a swirl center of the intake air flowing through the intake pipe; An exhaust pipe disposed at the upper center portion of the element case such that exhaust flow in the element case is symmetrical; It provides a vehicle air cleaner structure comprising; an oil cup mounted to the bottom of the element case.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention that can specifically realize the above object will be described.

1 to 3 show a preferred embodiment according to the present invention, in which reference numeral 12 of FIG. 1 denotes an element case.

The element case 12 serves to suck and filter external air to supply the intake manifold of the internal combustion engine, and has a cylindrical shape so that the air in the case 12 is pivotable. An intake pipe 14 for sucking air is formed at one end, and a filtration element 16 for filtering the sucked air is formed in the center of the case 12, and the filtered air in the upper center of the case 12. The exhaust pipe 18 is formed so that the gas is constantly supplied to the internal combustion engine.

In the above, the intake pipe 14, as shown in Figure 2, is formed in the tangential direction on the upper one side end of the case so that the intake air can be lowered (swirl) along the inner wall of the cylindrical element case 12. .

Referring back to FIG. 1, the filtering element 16 is made of steel wool or cloth, and is installed at the center of the element case 12 to allow air to flow through the intake pipe 14. When turning along the inner wall of the element case 12 forms a pivot center.

At this time, the edge of the side and the bottom of the filtration element 16 is connected to form the R portion 18 to round the flow of intake air more smoothly.

According to the installation structure of the intake pipe 14 and the filtration element 16 which are comprised as mentioned above, inhalation air will turn down between the inner wall of the element case 12 and the outer wall of the filtration element 16. As shown in FIG.

In addition, the exhaust pipe 18 is formed in the upper center of the element case 12 so that the air discharge flow in the element case has a symmetrical structure.

The lower portion of the element case 12 made as described above is provided with an oil cup 20 for storing the oil 22 for filtering foreign substances such as dust.

The oil cup 20 is detachably coupled to the element case 12 to remove dust and the like, and to replenish oil. Specifically, the oil cup 20 is attached to a bolt 24 as shown in FIG. 1. It may be coupled in a fastening manner, or by forming a female or male screw in each coupling portion of the element case 12 and the oil cup 20 may be coupled in a screw coupling manner.

And the hollow portion of the oil cup, as shown in Figure 3, the net 26 is installed at a certain distance from the inner wall of the cup to filter relatively large dust from the dust contained in the air.

That is, the air containing the relatively large dust among the air turning inside the element case 12 is larger in weight than the air containing the small dust, so that the turning radius is large due to the centrifugal force, and thus, the inner wall surface of the element case 12 is almost inclined. As a result, air containing large dust flows into the filtration element while hitting the oil located at the edge of the oil cup. Therefore, when the mesh 26 is installed on the moving path, the large dust and the like can be filtered more effectively. Will be.

The mesh 26 is installed on the support bracket 28 on top of the oil cup 20 and fixed to the support bracket 28.

Looking at the air filtration process of the air cleaner structure according to the present invention made as described above are as follows.

Due to the negative pressure of the internal combustion engine, air flows from the intake pipe 14 to the exhaust pipe 18 in the element case 12. Here, the inflow of air is made through the intake pipe 14, and the intake air introduced through the intake pipe 14 is lowered while turning along the outer wall of the filtration element 16, and this falling air is applied to its specific gravity. Therefore, since the lowering speed is different and the turning radius is different, the lowering and collision are carried out over the entire area of the oil phase in the oil cup 20, and after being first filtered while colliding with the oil, it is filtered again through the central filtration element 16. After that, it is discharged through the exhaust pipe 18 in the center of the case.

At this time, when the mesh is installed in the oil cup, relatively large dust in the air may be filtered by the mesh 26.

Since the air hitting the oil as it is hitting the oil evenly while turning, the oil scattering amount is reduced, and also through the exhaust pipe formed in the center of the case can be a symmetrical discharge flow of air.

According to the air cleaner structure for a vehicle according to the present invention made as described above, since the air flows in while turning, the amount of oil is not excessive and the exhaust pipe is installed at the center of the element case, so that the air is symmetrically scattered.

That is, the oil in the oil cup is scattered in an appropriate degree and symmetrical structure so that it does not leak into the internal combustion engine through the exhaust pipe, thereby improving the performance of the internal combustion engine and extending its life, and vibrating during combustion. And reduce noise.

Claims (3)

A cylindrical element case; An intake pipe disposed tangentially at an upper end of the element case; A filtering element disposed at the center of the element case so as to form a swirl center of the intake air flowing through the intake pipe; An exhaust pipe disposed at the upper center portion of the element case such that exhaust flow in the element case is symmetrical; And an oil cup mounted under the element case. The method according to claim 1, The filtration element The corners between the side and the bottom thereof are rounded so that the inlet air flows smoothly under the filtration element. The method according to claim 1, The hollow portion of the oil cup To filter out relatively large dust in the air Vehicle air cleaner structure, characterized in that the net is installed at a certain distance from the inner wall of the oil cup.