KR20040046099A - Device for separating oil from blow-by gas - Google Patents

Abstract

PURPOSE: An oil separation device of blow-by gas is provided to enable efficient filtering action for inevitable increase of blow-by amount caused by deterioration of a vehicle and obtain filtering performance required for blow-by amount by rotating a filter without a special driving unit. CONSTITUTION: An oil separation device of blow-by gas comprises a case(10) the inside of which is shut tight; rotating chambers(11) rotatably installed in the case; an inflow line(12) extended to a rotating shaft of the rotating chambers through a side of the case and connected to a blow-by gas line(120) of the engine side; flowing holes(13) formed between the side of the inflow line and the inner peripheral surface of the rotating chamber, for the flowing of gas; filters(14) installed inside the rotating chambers, to remove oil from blow-by gas; an exhaust line(15) connected to a side of the case and connected to a blow-by gas line of the surge tank side, to exhaust blow-by gas passing through the filters; and nozzles(16) formed to the upper ends of the rotating chambers in the tangential direction, for exhaust of the blow-by gas passing through the filters.

Description

DEVICE FOR SEPARATING OIL FROM BLOW-BY GAS}

The present invention relates to an oil separator of blow-by gas flowing back from the rocker cover to the intake duct when the engine is stopped, and more particularly, to an oil separator that maximizes oil separation efficiency by using centrifugal force. will be.

As shown in FIG. 2, the blow-by gas leaked between the cylinder block and the crankcase of the engine is supplied to the surge tank side by a breather connecting the crankcase and the surge tank side to be introduced into the cylinder for recombustion. do.

In this case, the blow-by gas is mixed with lubricating oil as it passes through the crankcase. If the blow-by gas is not effectively removed, the intake cylinder, that is, the turbocharger, the intercooler, or the like may be contaminated or may leak.

Therefore, there is a need for a separation device for separating oil in the blow-by gas, and conventionally, there is a problem in that the separation device cannot effectively separate oil by simply using a wire mesh or a filter.

That is, when only the wire mesh is used, there is a problem in that the turbocharger or the intercooler is contaminated as mentioned above, and when the filter is used only, there is a limit to the effective filtering effect against the inevitable increase of the blow-by amount due to vehicle aging.

In addition, the oil separation device has been designed to use a fine filter to effectively separate the oil or a self-cleaning type to increase the life of the filter, but this conventional technology also has a limit to the effective and continuous separation of oil, There is a disadvantage in that a separate driving device for rotating the filter rotor for cleaning is required.

Accordingly, the present invention has been made to solve the above-mentioned problems, it is possible to efficiently filter against the inevitable increase of blow-by amount due to the aging of the vehicle, and to require the blow-by amount by rotating the filter without a separate driving means It is an object of the present invention to provide an oil separator of blow-by gas, which is capable of obtaining a filtering performance.

1 is a schematic view showing a blow-by gas recirculation system equipped with an oil separator of blow-by gas according to the present invention;

2 is a schematic perspective view of an oil separator according to the present invention.

Explanation of symbols on the main parts of the drawings

10 case 11 rotation chamber

12: Inflow Line 13: Distribution Hall

14 filter 15 discharge line

16: nozzle 17: bearing block

18: diaphragm

In order to achieve the object as described above, the present invention, the oil removal device for removing the oil contained in the blow-by gas is installed in the blow-by gas line for distributing the blow-by gas from the cylinder block of the engine to the surge tank In the above, the oil removal device is characterized in that to rotate the filter installed therein by the pressure difference between the engine side and the surge tank side.

To this end, the oil removal device of the present invention communicates with the inside of the rotating chamber through a cylindrical rotating chamber rotatably installed in the case, an oil removing filter installed in the rotating chamber, and a rotating shaft of the rotating chamber, so that blow-by gas is introduced. A line, a discharge line communicating with the inside of the case, and a nozzle formed in a tangential direction of the rotating chamber at an upper end of the rotating chamber to discharge the blow-by gas passing through the filter.

Therefore, when blow-by gas is discharged through the nozzle by the negative pressure in the case, the rotary chamber is rotated by the injection pressure to increase the filter efficiency.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a blow-by gas recirculation system equipped with an oil separator of blow-by gas according to the present invention, Figure 2 is a schematic perspective view of the oil separator according to the present invention.

According to the above-described drawings, a blow-by gas line 120 is installed between the engine 100 and the surge tank 110 for re-injecting blow-by gas leaked between the cylinder blocks of the engine into the surge tank. An oil removal device is installed to remove oil contained in blow-by gas.

The oil removing device of the present invention is a case 10, the inside of which is sealed, a rotating chamber 11 rotatably installed in the case 10 via a bearing block 17, the case 10 upper An inflow line 12 communicating with one side and extending to a rotation shaft of the rotation chamber 11 and connected to an engine side blow-by gas line 120, between the inflow line 12 side and an inner circumferential surface of the rotation chamber 11. A distribution hole 13 formed in the distribution hole 13 through which the blow-by gas is distributed, installed in the rotary chamber 11, and a filter 14 for removing oil from the blow-by gas introduced through the distribution hole 13; A discharge line 15 connected to one side of the case 10 and connected to the blow tank side blow-by gas line 120 to discharge the blow-by gas passed through the filter 14, and rotates at an upper end of the rotary chamber 11. The filter 14 is formed in the tangential direction of the chamber 11 Rough blow a nozzle 16 to be by-gas is discharged.

Since the nozzle 16 is formed at the upper end of the rotating chamber 11, the distribution hole 13 is preferably formed at the lower end of the inflow line 12 and the lower end of the rotating chamber 11.

Therefore, the blow-by gas introduced into the lower portion of the rotating chamber 11 may maximize oil removal through the filter 14 in the process of exiting through the nozzle 16 of the upper portion of the rotating chamber 11.

In addition, the rotary chamber 11 is sealed except for the nozzle 16 at the upper end and the distribution hole 13 at the lower end, and at least two nozzles 16 are disposed at an interval of 180 degrees at the upper end thereof so that the rotation chamber 11 Are formed along the same tangential direction. That is, when one side nozzle 16 faces clockwise, the other nozzle 16 also faces clockwise in the same way.

On the other hand, in the present embodiment, the filter 14 is installed on the inner circumferential surface and the bottom surface of the rotary chamber 11, but is not particularly limited thereto, and is to be installed throughout the rotary chamber 11 in accordance with the structure of the filter (14). It may be.

Reference numeral 18, which is not described herein, is a diaphragm for controlling a communication state between the case 10 and the discharge line 15.

Hereinafter will be described the operation of the present invention.

The blow-by gas distributed through the blow-by gas line 120 connected to the crankcase of the engine 100 is introduced into the case 10 through the inflow line 12 installed in the blow-by gas line 120. .

Therefore, the blow-by gas is introduced into the rotating chamber 11 through the distribution hole 13 formed at the lower end of the inflow line 12 and the lower end of the rotating chamber 11, and the filter 14 installed in the rotating chamber 11. The oil contained in the blow-by gas is filtered through the filter.

On the other hand, the case 10 has an inflow line 12 is installed on one side and the discharge line 15 is installed on one side, each line is the engine blow-by gas line 120 and the surge tank side blow-by gas line 120 Negative pressure is applied to the discharge line 15 by the suction action of the surge tank side compressor compressor.

The blow-by gas in the rotary chamber 11 is discharged to the case 10 through the nozzle 16 formed at the upper end of the rotary chamber 11 by the negative pressure applied to the discharge line 15 of the case 10. As the blow-by gas is injected into the case 10 through the nozzle 16, the rotary chamber 11 is rotated in one direction by the injection pressure of the nozzle 16.

As a result, the blow-by gas introduced into the rotating chamber 11 is circulated like the rotating chamber 11, and the contact area with the filter 14 in the rotating chamber 11 is increased, thereby making the oil removal work more effective.

In this case, the larger the inflow amount of blow-by gas is, the higher the partial power of the gas injected through the nozzle 16 of the rotating chamber 11 becomes, thereby increasing the rotational force of the rotating chamber 11.

Therefore, the contact force between the filter 14 and the blow-by gas is also increased, so that the efficiency of ringing the filter 14 of the oil contained in the blow-by gas is also increased.

As such, the oil is removed while passing through the filter 14, and the gas injected through the nozzle 16 passes through the blow-by gas line 120 connected to the discharge line 15 and the discharge line 15. The filter 14 is cleaned or replaced after a certain time in order to maintain the oil removal efficiency.

According to the oil separator of the blow-by gas according to the present invention as described above, it is possible to maximize the removal efficiency of the oil contained in the blow-by gas by rotating the filter to increase the contact area with the blow-by gas.

In addition, a separate power source is not installed to rotate the filter, thereby lowering the manufacturing cost of the equipment and increasing the durability of the equipment.

Claims (3)

A case in which the inside is sealed, a rotating chamber rotatably installed in the case, an inflow line extending to a rotation shaft of the rotating chamber through one side of the case and connected to an engine side blow-by gas line, the inflow line side and the rotation Is formed between the inner circumferential surface of the chamber and the distribution hole through which the blow-by gas flows, the filter is installed inside the rotary chamber to remove oil from the blow-by gas, connected to one side of the case and connected to the blow tank side blow-by gas line A blow-by gas oil separator comprising: a discharge line for discharging the blow-by gas passed through a filter, and a nozzle formed in a tangential direction of the rotary chamber at an upper end of the rotary chamber to discharge the blow-by gas passed through the filter. The blow-by gas oil separator of claim 1, wherein at least two nozzles are arranged at a predetermined angle and each nozzle faces the same tangential direction. The blow-by gas oil separator of claim 1, wherein the filter is installed on an inner circumferential surface and a bottom surface of the rotating chamber.