KR20180027144A - Egr cooler for vehicle - Google Patents

Abstract

The present invention relates to an EGR cooler for a vehicle. The EGR cooler for a vehicle comprises: a cooler housing having a gas flow path therein and having a coolant inlet through which coolant for cooling the gas flow path flows; a cavity generation portion provided in the cooler housing and generating a cavity by reducing the pressure of the coolant flowing; a vibration generation portion which is provided on an upper portion of the cooler housing and generates vibrations while colliding with the cavity which is generated by the cavity generation portion and moves upward; and a vibration baffle provided to receive the vibrations from the vibration generation portion in the cooler housing and separating foreign substances accumulated in the gas flow path from the gas flow path by being coupled to the gas flow path and vibrating the gas flow path.

Description

[0001] EGR COOLER FOR VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an EGR cooler for a vehicle, and more particularly, to an EGR cooler for reducing the temperature of an EGR gas to improve the EGR rate in an EGR system for reducing harmful substances in the exhaust gas.

Exhausts that are exhausted after the combustion process in the engine may include incomplete combustion materials depending on the combustion state, typically incompletely burned carbon oxides or nitrogen oxides.

The incomplete combustion material may be evaluated as a harmful substance that is discharged outside the vehicle and adversely affect the environment. Various techniques for reducing such harmful substances have been developed.

On the other hand, there is a method of using the EGR system as a method for removing such harmful substances. The EGR system (EXHAUST GAS RECIRCULATION SYSTEM) is a system capable of reducing the generation of harmful substances by reducing the combustion temperature of the engine by recirculating part of the exhaust containing harmful substances back to the intake side of the engine and burning it in the engine.

Meanwhile, the EGR gas corresponding to a part of the exhaust gas is subjected to a combustion process in the engine to form a high temperature. When the high-temperature EGR gas is directly introduced into the intake side, combustion instability of the engine may be caused, The EGR cooler for cooling the EGR gas can be provided because it can adversely affect the EGR system.

At this time, it is important to prevent the situation where the foreign substances such as incomplete combustion substances contained in the exhaust gas adhere to or adhere to the EGR cooler while passing through the EGR cooler, or to remove the accumulated foreign substances, .

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

KR 10-1543248 B1

An object of the present invention is to effectively remove foreign substances accumulated in an EGR cooler without additional work, thereby improving the cooling efficiency of the EGR cooler and improving the EGR rate.

In order to achieve the above object, according to the present invention, there is provided an EGR cooler for a vehicle, comprising: a cooler housing having a gas flow path therein and having a cooling water inlet through which cooling water for cooling the gas flow path flows; A cavity generating unit provided in the cooler housing and generating a cavity by reducing the pressure of cooling water flowing; A vibration generating unit provided on the upper portion of the cooler housing to generate vibrations while colliding with a cavity generated by the cavity generating unit and moving upward; And a vibrator provided to receive vibrations from the vibration generating unit in the cooler housing and coupled with the gas channel to vibrate the gas channel so as to separate foreign substances accumulated in the gas channel from the gas channel, Baffle.

Wherein the cavity is constituted by a plurality of beams crossing the flow of the cooling water and the cross section of the beam is provided in the form of an airfoil whose front end faces the upstream side of the cooling water flow, thereby increasing a part of the cooling water passing through the beam And at the same time, to decompress to generate cavities.

The co-generation portion may be provided on the coolant inlet of the cooler housing.

The vibration generating unit may be provided in a plate shape extending in a direction parallel to the flow direction of the cooling water flowing in the cooler housing.

The vibration generating unit may be spaced apart from an inner upper surface of the cooler housing.

Wherein the vibration baffle is provided in a plate shape extending in a direction transverse to the flow of cooling water flowing in the inside of the cooler housing and is penetrated by at least a part of the gas flow passage, And the like.

The upper end of the vibration baffle may be integrally provided with the vibration generating unit.

The vibration baffle may be provided with a connecting member at an upper end thereof and the connecting member may extend from the vibration baffle toward the vibration generating unit and may be provided to be capable of receiving vibration of the vibration generating unit by being in contact with or in contact with the vibration generating unit have.

The connecting member may be a wire that is coupled to form a tension in the vibration baffle and the vibration generating unit to transmit vibration.

According to the EGR cooler of the vehicle described above, the foreign substances accumulated in the EGR cooler can be effectively removed without additional work, thereby improving the cooling efficiency of the EGR cooler and improving the EGR rate.

Particularly, according to the present invention, since at least a part of the cooling water is reduced to form a cavity, the foreign matter (such as ammonia) accumulated in the EGR cooler can be effectively removed without using a separate power source or additional operation have.

Further, the cavity generating part for forming the cavity is formed by an airfoil-shaped beam formed at the cooling water inlet, so that it is possible to induce the decompression effect from the flow of the cooling water itself without requiring a special device, which is efficient.

Further, a vibration generating unit is provided in which vibrations are generated by collision and collapse of cavities generated by the cavity generating unit, and a vibration baffle provided to receive vibration from the vibration generating unit is coupled to the gas flow path of the EGR cooler, Foreign matter on the gas flow path can be effectively removed by the vibration caused by the baffle.

1 is a view showing an EGR cooler of a vehicle according to an embodiment of the present invention,
2 is a view illustrating a cooling water inlet in an EGR cooler of a vehicle according to an embodiment of the present invention,
3 is a cross-sectional view of a beam forming a cavity generating portion in an EGR cooler of a vehicle according to an embodiment of the present invention,
4 is a view showing the inside of the EGR cooler of the vehicle including the gas flow path according to the embodiment of the present invention,
5 is a view showing a structure in which a vibration generating unit and a vibration baffle are integrally provided in an EGR cooler of a vehicle according to an embodiment of the present invention;
FIG. 6 is a view illustrating a vibration generating unit and a vibration baffle connected to each other through a connecting member in an EGR cooler of a vehicle according to another embodiment of the present invention. FIG.

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

1, 2 and 4, the EGR cooler 100 of the vehicle according to the present invention is provided with a gas passage 190 therein, and a cooling water inlet 116 for introducing cooling water for cooling the gas passage 190 A cooler housing 110 provided with a cooler 110; A cavity generating unit 120 provided in the cooler housing 110 and generating a cavity by reducing the pressure of the cooling water flowing; A vibration generating unit 130 provided at an upper portion of the cooler housing 110 and configured to generate vibration by collapsing the cavity generated by the cavity generating unit 120 and moving upward; And a vibration generating unit 130 installed in the cooler housing 110 for vibrating the vibrating unit 130. The vibrating unit 130 is coupled to the gas passage 190 to vibrate the gas passage 190, And a vibration baffle 140 provided so as to be able to separate foreign matter deposited on the gas passage 190 from the gas passage 190.

Specifically, the cooler housing 110 is provided with a gas passage 190 therein and a cooling water inlet 116 through which the cooling water for cooling the gas passage 190 flows. The cooler housing 110 preferably has a length and a space is formed therein. A plurality of gas passages 190 extending in a direction parallel to the longitudinal direction of the cooler housing 110 are provided inside the cooler housing 110.

The EGR gas that is partly returned to the intake side as a part of the exhaust gas forms a higher temperature than the bar intake that is a part of the exhaust gas. Such a high temperature of the EGR gas may reduce the inflow level (EGR rate) to the intake side, and may further increase the temperature of the intake air flowing into the combustion chamber, causing a misfire, or may cause a situation have.

Therefore, in the EGR system, it may be important to reduce the temperature of the EGR gas. In order to cool the gas flow passage 190 in which the EGR gas flows, cooling water flows inside the cooler housing 110 .

The cooling water flows into the interior of the cooler housing 110 through the cooling water inlet 116 provided in the cooler housing 110 and is preferably discharged through the cooling water outlet 118 provided in the cooler housing 110, .

FIG. 1 shows an outer appearance of a cooler housing 110 having a gas flow path 190 (not shown) therein, and FIG. 2 shows the appearance of a cooling water inlet 116 formed in the cooler housing 110 . 1, a gas inlet 112 and a gas outlet 114 of EGR gas flowing in the gas passage 190 are shown and a cooling water inlet 116 and a cooling water outlet 118 Are shown.

Preferably, the initial cooling water introduced into the cooler housing 110 is supplied to the gas flow path forming the relatively high temperature by making the flow direction of the EGR gas flowing in the gas flow path 190 coincide with the flow direction of the cooling water, So that the front end of the cooling pipe 190 can be cooled. This may correspond to a desirable design for improving the cooling efficiency.

Meanwhile, the cavity generating unit 120 is provided in the cooler housing 110 and is provided to generate a cavity by reducing the pressure of the cooling water flowing.

The co-generation portion 120 is provided in the cooler housing 110, and at least a part of the cooling water in the cooler housing 110 passes through the co-generation portion 120. Preferably, the cavity generating portion 120 may be provided on the cooling water inlet 116 side so that the entire cooling water can pass through the cavity generating portion 120.

In the present invention, the principle that the cavity generating portion 120 generates a cavity on the cooling water is as follows. In a liquid such as water, a certain level of gas is dissolved, and the level of gas dissolution is related to the pressure of the liquid that becomes the solvent.

That is, in the present invention, when the pressure of the cooling water drops instantaneously, the gas existing in the cooling water phase escapes to the outside, forming a low-pressure region and forming a cavity (bubble).

This principle is called CAVITATION phenomenon, and the cavity generated by the decompression of the cooling water is generated by momentary depressurization and forms an unstable state. It collapses when colliding with another object, causing vibration. Is used to remove foreign matter that may accumulate on the gas flow path 190 of the EGR cooler by using the vibration due to the above-mentioned joint collapse.

In the case of the present invention, a cavity generating portion 120 for reducing the cooling water so as to form a cavity from the cooling water is provided. The co-generation unit 120 may be provided to reduce the cooling water in various ways.

For example, the co-generation unit 120 may be provided as a device for directly reducing the pressure of the cooling water by using the power. The co-generation unit 120 may instantaneously increase the local flow speed of the cooling water by using the power to increase the relative decompression effect (Bernoulli's theorem) As shown in FIG.

More preferably, a part of the cooling water in the flow can be accelerated by using only the flow energy of the cooling water without consuming any additional power, so that the relative reduction effect due to the local increase may be provided. A representative example may be a grill structure comprised of an airfoil shaped beam 122. A detailed description thereof will be described later.

As a result, in order to utilize the vibration due to the collapse of the cavity, a cavity generating portion 120 is provided in the cooler housing 110 to reduce the pressure of the cooling water to form a cavity, Allow the cavity to form in the cooling water. FIG. 2 shows a cavity generating part 120 provided in a grill structure according to an embodiment of the present invention.

The vibration generating unit 130 is provided on the upper portion of the cooler housing 110 and vibrates as the cavity generated by the cavity generating unit 120 collapses to be collapsed.

As described above, in the present invention, the cooling water can be depressurized at least partly through the cavity generating part 120 to form a cavity. The cavity formed in the cooling water phase moves upward on the cooling water due to the difference in specific gravity. In the present invention, the vibration generating part 130 in which the raised cavity collides is provided.

The vibration generating part 130 is provided inside the cooler housing 110 and is provided in a state of being locked by the cooling water. Particularly, a cavity, which is located above the co-generation portion 120 from the ground and moves upward from the cavity generating portion 120, is provided to collide with the cavity.

The cavity on the cooling water collides with the vibration generating portion 130 and collapses. Energy is generated in the collapse of the cavity, which causes vibration of the vibration generating part 130. Accordingly, it is preferable that the vibration generating part 130 is provided in a thin plate shape to easily generate vibration, and is preferably minimized to a contact part with another member (particularly, the cooler housing 110).

4 is a plan view of the cooler housing 110. The cooler housing 110 is provided on the upper side of the gas flow path 190 and the cavity generating part 120, Of the vibration generating portion 130 of the first embodiment.

The vibration baffle 140 is provided to receive vibration from the vibration generating unit 130 in the cooler housing 110 and is coupled with the gas passage 190 to vibrate the gas passage 190, So that foreign matter deposited inside the gas channel 190 can be separated from the gas channel 190.

Specifically, the vibration baffle 140 is provided to be able to transmit or receive vibration in a combined relationship with the gas passage 190 and the vibration generating unit 130. Further, the vibration baffle 140 may be provided as a baffle for improving the flow of the cooling water.

It is preferable that the vibration baffle 140 has a coupling relationship so that it can be vibrated together with the gas flow path 190 in particular. In other words, it is preferable that the vibration transmitted from the vibration generating unit 130 can be transmitted to the gas flow path 190 side.

It is preferable that the vibration baffle 140 is also provided so as to have a minimum contact area with other members (particularly, the cooler housing 110) so as not to be transmitted or consumed to a vibration-free area. In addition, it is preferable that the vibration generating unit 130 is provided in a relatively thin plate shape so as to easily generate vibrations so that vibration is easily generated.

4, a plurality of vibration baffles 140, which are provided in plurality according to one embodiment of the present invention and are physically connected to the vibration generating unit 130 and form a coupling relationship so as to be vibrated integrally with the gas passage 190, Respectively.

Meanwhile, the EGR gas flowing inside the gas passage 190 corresponds to a part of the exhaust gas. Therefore, depending on the combustion state of the engine, foreign substances such as carbon substances incompletely burnt on the EGR gas may be present in a rich state. In order to improve the cooling efficiency of the EGR gas, Can be stored in the gas passage 190 while passing through the relatively small gas passage 190.

As described above, when foreign substances are accumulated on the gas passage 190, the contact area between the inner wall of the gas passage 190 and the EGR gas gradually decreases to reduce the cooling efficiency, and the flow cross sectional area of the EGR gas decreases, The difference of the back pressure between the front end and the rear end of the front end portion increases, which is disadvantageous from the viewpoint of efficiency. Further, at least some of the plurality of gas flow paths 190 may not be able to flow the EGR gas itself due to the deposition of the foreign matter.

As a result, it is an important task to remove foreign matter accumulated on the gas flow path 190 when operating the EGR cooler. Removal of foreign matter may be performed by replacing the EGR cooler (gas flow path 190) This can be done by removing the foreign material, but this can lead to consumption of parts and can be an inefficient method.

However, in the case of the present invention, it is possible to effectively remove foreign matter on the gas passage 190 without performing a separate component replacement or additional operation. More specifically, the vibration baffle 140 receives vibration from the vibration generating portion 130 where vibration is generated by the collapse of the cavity, and the vibration of the vibration baffle 140 is transmitted onto the gas passage 190, Separation of adhered or adhered foreign matter may occur on the gas passage 190 according to the vibration of the flow passage 190. The foreign matter separated from the gas passage 190 by the vibration of the gas passage 190 is discharged from the EGR cooler by the flow of the EGR gas.

The present invention is characterized in that a cavity generating part 120 is provided in a cooler housing 110 to form a cavity in a cooling water phase and a vibration generating part 130 vibrating by the cavity is inserted into the cavity of the cooler housing 110 And a vibration baffle 140 physically connected to the vibration generating part 130 and coupled to the gas flow path 190 to receive vibration from the vibration generating part 130. Thus, Thereby separating the foreign substances accumulated on the gas passage 190 from the water passage.

This makes it possible to automatically remove foreign matters on the gas passage 190 without replacing or adding a part for removing foreign substances on the gas passage 190, thereby improving the cooling efficiency and maintenance of the EGR cooler effectively .

2 to 3, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the cavity generating portion 120 is constituted by a plurality of beams 122 which cross the flow of cooling water, The front end 123 is provided in the form of an airfoil facing the upstream side of the cooling water flow so that a part of the cooling water passing through the beam 122 is accelerated and reduced to generate a cavity .

Specifically, the co-generating portion 120 is comprised of a plurality of beams 122 that cross the flow of cooling water. The plurality of beams 122 may be integrally formed with the cooler housing 110 or may be separately manufactured and coupled to the outer wall of the cooler housing 110 or the gas passage 190.

In addition, each of the beams 122 preferably extends in mutually-parallel directions and may be equally spaced from each other. The cooling water flowing between the equally spaced beams 122 is at least partially accelerated by the cross-sectional shape of the beam 122, and is depressurized by the acceleration.

In the embodiment of the present invention, the shape of the beam 122 is an airfoil shape. Airfoil, also called wing bone, refers to a streamlined cross-section designed to maximize lifting by the flowing fluid and minimize drag.

For maximum lift, the airfoil shape is based on the Bernoulli principle, with the upper side curvature being larger than the lower side grain with respect to the cross section, and the shear 123 is formed by a gentle curve And the rear end forms an edge that smoothly converges to prevent stalling of the fluid.

The fluid passing through the upper side in which the curvature is largely formed is increased in movement distance than the fluid passing through the lower side which forms a gentler curved line than the upper side, so that the speed increase occurs.

Increasing the fluid causes a pressure change, especially the fluid passing through the upper side has a lower pressure than the lower side and has a lower pressure than the lower side. Accordingly, in the case of the present invention, the cooling water passing through the upper side of the airfoil shape is decompressed to form the cavity.

2 shows a cavity generating part 120 composed of a plurality of beams 122 according to an embodiment of the present invention. In FIG. 3, a sectional shape of the beam 122 is formed so as to form the shape of an airfoil Respectively.

It is preferable that a gentle leading end corresponding to the front end 123 of the airfoil is provided to face the upstream side of the cooling water on the cross section of the beam 122 constituting the co- The cooling water passing through the upper side of each of the beams 122 is at least partially depressurized to form a cavity.

1 and 2, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the cavity generating part 120 is provided on the cooling water inlet 116 provided in the cooler housing 110 do.

Specifically, the cavity generating part 120 is provided on the cooling water inlet 116 provided in the cooler housing 110, so that the entire cooling water flowing into the cooler housing 110 flows through the cavity generating part 120 .

The greater the number of cavities generated by the cavity generating portion 120, the greater the intensity of the vibration generated in the vibration generating portion 130. This is because in the present invention, foreign matter on the gas passage 190 is separated from the gas passage 190 The larger the amount of the cooling water flowing through the co-generation portion 120, the more advantageous it can be.

The co-generation portion 120 may be provided at a portion other than the cooling water inlet 116 in the cooler housing 110. In this case, the size of the co-generation portion 120 required to decompress more cooling water The number of beams 122, the length, etc.) becomes large, which may cause disadvantages.

Accordingly, the present invention can reduce the amount of cooling water flowing through the cavity generating portion 120 while preventing the unnecessary increase in the size of the cavity generating portion 120 by arranging the cavity generating portion 120 on the cooling water inlet 116 The number of cavities generated in the cooling water phase can be effectively increased.

FIG. 1 schematically shows a position and a shape of the cooling water inlet 116 provided in the cooler housing 110. In FIG. 2, a plurality of beams 122 extending in a direction crossing the cooling water on the cooling water inlet 116, A co-generating portion 120 is shown.

4 to 6, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the vibration generating unit 130 is disposed in a direction parallel to the flow direction of the cooling water flowing in the cooler housing 110 And is provided in an elongated plate shape.

As described above, the vibration generating part 130 is preferably positioned above the cavity generating part 120 in order to generate vibration. Particularly, the vibration generating part 130 moves along the flow direction of the cooling water, And is provided in a plate shape extending in a direction parallel to the flow direction of the cooling water.

However, the plate-like shape does not necessarily mean the shape of a flat plate, but may be formed in various shapes such as a curvature formed in a certain section. The cavity formed by the vibration generating part 130 may collide with the vibration generating part 130 to generate vibration in the vibration generating part 130 despite the movement due to the influence of the cooling water flow. 4 to 6 show the shapes of the gas flow path 190 and the cavity generation portion 120 positioned on the upper side of the cavity generation portion 120 as the upper portion of the cooler housing 110.

4, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the vibration generating unit 130 is spaced apart from the inner upper surface of the cooler housing 110. [

The vibration generating unit 130 may be formed in a plate shape extending along the flow direction of the cooling water as described above. The cross-sectional shape of the vibration generating unit 130 may be the same as the inner wall shape of the upper side of the cooler housing 110 And may be provided in a corresponding shape.

However, when the vibration generating unit 130 is closely contacted with the upper side inner wall of the cooler housing 110, the vibration generated in the vibration generating unit 130 is shared with the cooler housing 110 and consumed.

That is, in order to transmit the vibration generated by the collapse of the cavity to the side of the gas passage 190, the vibration generating unit 130 is disposed apart from the upper side inner wall of the cooler housing 110, Thereby minimizing the unnecessary consumption of the vibration generated in the vibration generating unit 130 through the cooler housing 110.

4 to 6, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the vibration baffle 140 is disposed in a direction crossing the flow of the cooling water flowing in the interior of the cooler housing 110 And is penetrated by at least a part of the gas passage 190. The penetrating portion 147 is coupled with the gas passage 190 to transmit vibration.

The vibration baffle 140 may function as a baffle for improving the fluidity of cooling water inside the curle housing as described above. For this purpose, in the embodiment of the present invention, As shown in Fig.

Preferably, the vibration baffle 140 may be provided with a plurality of baffles for repeatedly refracting the flow of the cooling water in order to increase the flow distance of the cooling water so that the heat exchange section between the gas flow path 190 and the cooling water can be increased. have.

In addition, the vibration baffle 140 is advantageous in separating foreign matter as the vibration width caused by the vibration transmitted from the vibration generating unit 130 is larger, and is preferably provided in a thin plate shape.

In the embodiment of the present invention, the vibration baffle 140 is coupled to the gas passage 190 to transmit vibration. Specifically, the vibration baffle 140 is penetrated by the gas passage 190 , And a coupling relation with the gas flow path (190) is formed through the penetrating point, so that vibration sharing can be stably performed between them.

For example, when only one point of the vibration baffle 140 is in contact with or coupled to the gas passage 190, the path through which the vibration can be transmitted becomes restricted, which is disadvantageous for separation of foreign matter by vibration of the gas passage 190 .

4 to 6, at least a part of the through-hole 147 is formed to pass through the plurality of gas passages 190, and the penetrating portion 147 is in close contact with the gas passageway 190, And is coupled with the gas passage 190 through the penetrating portion 147 to ensure stable vibration transmission.

The vibration baffles 140 shown in FIGS. 4 to 6 are provided in a plurality of directions so as to be biased in the lateral direction so that the adjacent vibration baffles 140 are alternately biased leftward or rightward so that the flow of the cooling water is refracted, do.

5, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the upper end 142 of the vibration baffle 140 is provided integrally with the vibration generating unit 130.

Specifically, in the present invention, the vibration baffle 140 and the vibration generating unit 130 can form a coupling relationship in various ways. In an embodiment of the present invention, the upper end 142 of the vibration baffle 140 is provided integrally with the vibration generating part 130 so that vibration can be transmitted from the vibration generating part 130.

The manner in which the upper end portion 142 of the vibration baffle 140 is provided integrally with the vibration generating portion 130 may also be varied. For example, the vibration baffle 140 may be formed integrally with the vibration generating unit 130, and the vibration generating unit 130 may be formed with an insertion portion for inserting the upper end 142 of the vibration baffle 140 Further, after the vibration baffle 140 is manufactured as a separate member from the vibration generating unit 130, it may be integrated with each other by bolting, fitting, welding, or the like. FIG. 5 shows an embodiment in which the vibration baffle 140 is formed integrally with the vibration generating part 130.

6, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the vibration baffle 140 is provided with a connecting member 144 at the upper end portion 142, The vibration generating unit 130 is provided to extend from the vibration baffle 140 toward the vibration generating unit 130 to be coupled to or contact with the vibration generating unit 130 to receive vibration of the vibration generating unit 130.

In detail, in an embodiment of the present invention, a connecting member 144 is provided at an upper end 142 of the vibration baffle 140, and the vibration baffle 140 is connected to the vibration generating unit 130 to receive vibrations.

The coupling member 144 is provided to be in contact with or in contact with the vibration baffle 140 and the vibration generating unit 130 so that vibration can be transmitted between the vibration baffle 140 and the vibration generating unit 130. The connecting member 144 may be provided in various shapes.

For example, it may be provided in a plurality of protrusions protruding upward from the vibration baffle 140 so as to contact the vibration generating part 130 and the end, It may be provided as a wire.

6 shows a state in which the vibration baffle 140 and the vibration generating unit 130 are physically connected to each other through a connecting member 144 provided at an upper end 142 of the vibration baffle 140 so that mutual vibration can be transmitted have.

6, in the EGR cooler 100 of the vehicle according to the embodiment of the present invention, the connecting member 144 is coupled to the vibration baffle 140 and the vibration generating unit 130 so as to form a tension, It corresponds to the wire which is made possible to carry.

Specifically, a plurality of the vibration baffles 140 may be provided, and a wire may be provided as a connecting member 144 on the upper end 142 of the plurality of vibration baffles 140. The wires are preferably fastened to the vibration generating part 130 positioned above the vibration baffle 140 to provide mutual physical connection.

It is preferable that a wire provided as the connecting member 144 is formed so as to form a tension when coupled to the vibration baffle 140 and the vibration generating unit 130. In the case of a wire in which tension is not formed, transmission of vibration is very rare, which is very disadvantageous to the effect of the present invention.

Therefore, the connecting member 144 may be provided in a state in which the connection member 144 is tightly pulled so as to generate a tension between the vibration baffle 140 and the vibration generating unit 130. [ Accordingly, when vibration is generated in the vibration generating unit 130, the vibration is transmitted to the vibration baffle 140 through the wire. The material of such a wire can be various, and it can be made of metal and plastic fiber. 6 shows a state in which the vibration baffle 140 and the vibration generating unit 130 are connected to each other by the connecting member 144 provided with a wire.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

110: cooler housing 120: co-
130: vibration generating unit 140: vibration baffle

Claims (9)

A cooler housing having a gas flow path therein and having a cooling water inlet through which cooling water for cooling the gas flow path flows;
A cavity generating unit provided in the cooler housing and generating a cavity by reducing the pressure of cooling water flowing;
A vibration generating unit provided on the upper portion of the cooler housing to generate vibrations while colliding with a cavity generated by the cavity generating unit and moving upward; And
A vibrating baffle provided in the cooler housing to receive vibration from the vibration generating part and to be separated from the gas flow path by being coupled with the gas flow path to vibrate the gas flow path, ; An EGR cooler of the vehicle. The method according to claim 1,
Wherein the cavity generating portion comprises a plurality of beams crossing the flow of cooling water,
Characterized in that the cross section of the beam is provided in the form of an airfoil whose front end faces the upstream side of the cooling water flow so that a part of the cooling water passing through the beam is accelerated and reduced to generate a cavity . The method of claim 2,
And the co-generation portion is provided on the cooling water inflow port provided in the cooler housing. The method according to claim 1,
Wherein the vibration generating portion is provided in a plate shape extending in a direction parallel to a flow direction of the cooling water flowing in the cooler housing. The method of claim 4,
Wherein the vibration generating portion is spaced apart from an inner upper surface of the cooler housing. The method according to claim 1,
Wherein the vibration baffle is provided in a plate shape extending in a direction transverse to the flow of cooling water flowing in the inside of the cooler housing and is penetrated by at least a part of the gas flow passage, Wherein the EGR cooler is configured to deliver the EGR cooler to the EGR cooler. The method according to claim 1,
Wherein an upper end portion of the vibration baffle is provided integrally with the vibration generating portion. The method according to claim 1,
The vibrating baffle is provided with a connecting member at its upper end and the connecting member is provided to extend from the vibration baffle toward the vibration generating unit to be in contact with or in contact with the vibration generating unit so as to be able to receive the vibration of the vibration generating unit EGR cooler of the vehicle. The method of claim 8,
Wherein the connecting member is a wire which is coupled to form a tension in the vibration baffle and the vibration generating unit so as to transmit vibration.

Images