KR20120121224A - Method for Fixing Radiate Heat Fin of Exhaust Gas Reciculation Cooler for Vehicle and Exhaust Gas Reciculation Cooler for Vehicle - Google Patents

Abstract

PURPOSE: An EGR cooler for vehicles and a method for fixing a radiation fin unit are provided to set the optimum position of a fixed member on the basis of a simulation result. CONSTITUTION: A method for fixing a radiation fin unit of an EGR cooler for vehicles comprises following steps. Exhaust gas is supplied to the EGR cooler. The simulation of the exhaust gas moving along the EGR cooler is performed. The area that the exhaust gas is concentrated is set in the EGR cooler. A fixing bar(400) is installed outside the area that the exhaust gas is concentrated. In the simulation step, the speed and pressure data of the exhaust gas are obtained. The obtained data is applied according to the position of a radiation fin(320).

Description

Method for Fixing Radiating Fin Unit of Vehicle Easy Cooler and Vehicle Easy Cooler Using Method {Method for Fixing Radiate Heat Fin of Exhaust Gas Reciculation Cooler for Vehicle and Exhaust Gas Reciculation Cooler for Vehicle}

The present invention relates to a cooler for reusing exhaust gas discharged from an engine in an engine through heat exchange with cooling water, and more particularly, to stably fix a heat dissipation fin unit inserted into a vehicle easy cooler installed in a vehicle. The present invention relates to a method for fixing a heat radiation fin unit of a vehicle easy cooler and a vehicle easy cooler using the same.

In general, Exhaust Gas Reciculation (EGR) refers to a device for suppressing generation of nitrogen oxides (NOx) by reducing a combustion temperature in a cylinder by recirculating a part of the exhaust gas into an intake system.

Air is composed of about 79% nitrogen, 21% oxygen and other trace elements. Nitrogen and oxygen do not react with each other at room temperature, but they react with each other at high temperatures (above 1450 ℃) to produce NOx. Is generated.

In particular, diesel engines are combusted by compression ignition method, and the compression ratio is getting higher due to the development of cylinder materials. As the combustion chamber temperature increases, the combustion chamber temperature increases the efficiency of the thermodynamic engine. It is causing a problem. The nitrogen oxide is a major harmful substance that destroys the global environment, causing acid rain, optical smog, respiratory disorders, and the like.

In order to prevent this, the vehicle is equipped with ERG, an exhaust gas recirculation device, to try to suppress NOx. In order to suppress the production of nitrogen oxides, the maximum temperature of the combustion chamber is reduced by recirculation of inert gas (steam, carbon dioxide, etc.), the generation of nitrogen oxides is prevented by lean combustion, or ignition due to high specific heat inert gas injection. Advance delay and lowering of the combustion chamber local maximum temperature and pressure may be used.

On the other hand, in the diesel engine, the study of the reduction mechanism of nitrogen oxide (NOx) by the EGR in the diesel engine, unlike gasoline, is a fundamental cause of the oxygen concentration reduction, and on the contrary, a study that the flame temperature decrease is reported. At present, no conclusion on which is right is given, but it is reported recently that the reduction contribution of nitrogen oxides at the oxygen concentration and the flame temperature is the same level.

The EZR device equipped with EZR cooler is a method of reducing nitrogen oxides (NOx) without increasing fuel economy and particulate matter (PM) due to strict emission control of diesel engines. It is a device that can obtain a great effect on nitrogen oxide reduction with little investment.

Since the EZR cooler should cool exhaust gas temperature of about 700 ℃ to 150 ℃ ~ 200 ℃, it must be heat-resistant material, must be designed compactly for installation inside the vehicle, and pressure drop should be minimized to supply proper EGR amount. Condensation is generated from exhaust gas during heat exchange and sulfuric acid in fuel is easy to cause corrosion due to sulfuric acid in condensate, and it must be corrosion-resistant material.There must be constant mechanical strength because mechanical load acts due to pulsation effect of exhaust gas. In addition, particulate matter (PM) of the exhaust gas can block the inside of the pipe, and countermeasures against fouling are required.

A conventional EZC cooler will be described with reference to the drawings.

Referring to FIG. 1, the conventional exhaust gas recirculation apparatus 1a recycles a part of the exhaust gas exhausted through the exhaust manifold 3 to the intake manifold 2 to prevent generation of nitrogen oxides (NOx). To reduce it.

In the exhaust gas recirculation apparatus 1a, a shell & tube type cooler 4 is installed in the exhaust gas recirculation path so that the exhaust gas can be supplied in a cooled state. The cooling water of 10) is used, and the cooling water flows from the cooling water inlet 7in and flows out to the cooling water outlet 7out.

The exhaust gas flows in through the right conduit 6in extending from the exhaust manifold 3 and flows out into the left conduit 6out extending to the intake manifold 2. Reference numeral 11 in the drawings shows a combustion chamber.

In the conventional exhaust gas recirculation apparatus 1a made as described above, a shell & tube type cooler 4 is used as an easy cooler, but the manufacturing method is complicated and through 6 to 7 steps of press processing for manufacturing. As the fabrication is performed, workability is remarkably reduced, and the flow resistance and heat exchange efficiency of the exhaust gas introduced into the shell & tube type cooler 4 are lowered, thereby requiring technical measures.

Embodiments of the present invention are to provide a fixing bar for the stable fixing of the heat radiation fin unit inserted into the easy cooler, and to secure the fluidity of the exhaust gas inside the easy cooler according to the installation of the fixing bar.

Embodiments of the present invention simulate the movement state of the exhaust gas, and to set the optimal position of the fixed bar based on the simulated results.

According to an aspect of the present invention, a method for fixing a heat radiation fin unit of a vehicle RG cooler according to an embodiment of the present invention includes the steps of: (a) supplying exhaust gas into the RG cooler; (b) simulating a movement state of the exhaust gas moved along the inside of the EZC cooler; (c) setting an exhaust gas concentration region within the EZC cooler according to the movement of the exhaust gas; (d) setting a position for fixing the heat dissipation fin unit to a position outside the exhaust gas concentration region; And (e) installing the fixing bar at a position outside the exhaust gas concentration region.

The step (b) includes acquiring data on the velocity and pressure of the exhaust gas inside the EZC cooler and applying the obtained data according to the position of the heat dissipation fin.

In the step (b), the concentration of the exhaust gas is set by combining the data obtained at the inlet, the outlet, and the inside of the EZC cooler.

In the step (d), the front and rear surfaces of the heat dissipation unit inserted into the EZC cooler housing are set to the installation position of the fixing bar, but the front and rear sides of the heat dissipation unit are set on the same line.

The step (e) includes the step of inserting the fixing bar into the heat dissipation unit; Fixing the inserted fixing bar.

According to another aspect of the present invention, there is provided a vehicle easy cooler comprising: an easy cooler housing provided with a passage through which coolant is moved; A heat dissipation unit disposed in the EZC cooler housing and provided with a partition wall for partitioning the inside of the EZC cooler housing; A heat dissipation fin unit provided with a heat dissipation fin integrally formed with a body inserted into the heat dissipation unit; And fixing bars installed on the front and rear surfaces of the heat dissipation unit for fixing the heat dissipation fin unit.

The fixing bar is installed on the partition wall of the heat dissipation unit.

The fixing bar is disposed in the horizontal direction of the heat dissipation fin unit.

The fixing bar is spaced apart from the upper and lower portions of the front and rear of the heat dissipation fin unit, respectively.

The fixing bar is made of the same thickness as the thickness of the heat radiation fins.

The partition wall is provided with an insertion groove for inserting the fixing bar.

The fixing bar is characterized by using stainless steel.

The body includes an inclined portion of which the upper and lower surfaces are inclined inward toward the center of the heat dissipation unit.

The heat dissipation fin unit may include: first protrusions provided on upper and lower surfaces of the body in order to fix the inner heat dissipation unit; It further includes a second protrusion provided on the side of the heat dissipation fins.

A plurality of the first protrusions are disposed along the upper and lower surfaces of the body and are deformed to a free state when the heat radiating fin unit is press-fitted into the heat radiating unit.

The first protrusion includes a first inclined portion inclined toward the front of the body; And a second inclined portion inclined toward the rear side of the body.

The second protrusion is continuously formed along the longitudinal direction of the heat dissipation fin.

The heat dissipation fin unit is provided with a stepped portion at the front end of the body upper surface.

The heat dissipation unit further includes a protrusion piece coupled to the step of the body.

The heat dissipation unit further includes a stripper for preventing excessive insertion of the heat dissipation fin unit.

Embodiments of the present invention can minimize the influence of the flow of the exhaust gas by setting the optimal installation position of the fixed bar through the simulation to avoid the exhaust gas concentration region.

Embodiments of the present invention can be stably fixed by a plurality of heat dissipation fin units inserted into the RG cooler by the fixing bar, it is possible to minimize the influence of the flow resistance and the differential pressure of the exhaust gas.

Embodiments of the present invention can be maintained in a stable fixed state even in an environment exposed to the high temperature of the exhaust gas by performing the fixing in a fixed manner by pressing without fixing for fixing the fixing bar.

Embodiments of the present invention may improve the fluidity and differential pressure performance of the exhaust gas as the flow velocity at the inlet and outlet of the heat radiating fin is the same and the differential pressure is lowered.

Embodiments of the present invention can reduce the welding cost while preventing the radiating fin unit is fixed to the inside of the radiating unit by the projections, it is possible to prevent the separation and breakage of the radiating fin unit.

Embodiments of the present invention can produce a heat radiation fin unit through a single mold, it is easy to recognize the assembly direction into the heat radiation unit.

1 is a view showing a conventional RIG cooler.
Figure 2 is a flow chart illustrating a method of fixing a heat radiation fin unit of the vehicle Easy Cooler according to an embodiment of the present invention.
3 to 6 is a view simulating the flow state of the exhaust gas inside the EG cooler according to an embodiment of the present invention.
Figure 7 is a front view showing a state in which the fixing bar is installed in the heat radiation fin unit according to an embodiment of the present invention.
8 is a perspective view showing a vehicle easy cooler according to an embodiment of the present invention.
Figure 9 is an exploded perspective view of a vehicle easy cooler according to an embodiment of the present invention.
Figure 10 is a side view showing a heat radiation fin unit according to an embodiment of the present invention.
11 is an assembled state diagram of a vehicle easy-cooler for vehicles according to an embodiment of the present invention.
12 is a view showing an assembled state of the fixing bar according to an embodiment of the present invention.
13 is an operating state diagram of a vehicle easy-to-use cooler according to an embodiment of the present invention.

A vehicle easy cooler according to an embodiment of the present invention will be described with reference to the drawings. 2 is a flowchart illustrating a method of fixing a heat dissipation fin unit of a vehicle RG cooler according to an embodiment of the present invention.

Referring to FIG. 2, the method of fixing a heat radiation fin unit of a vehicle easy cooler includes (a) supplying exhaust gas to the inside of the easy cooler (ST100), and (b) exhaust gas moving along the inside of the easy cooler. The simulation is performed for the moving state of (ST200).

And (c) setting the exhaust gas concentration region inside the EZC cooler according to the movement of the exhaust gas (ST300), and (d) setting the position for fixing the heat dissipation fin unit to a position outside the exhaust gas concentration region. ST400), and (e) a fixing bar is installed at a position outside the exhaust gas concentration region (ST500).

Step (b) (ST200), the data on the speed and pressure of the exhaust gas inside the EZR cooler is obtained, and the obtained data is applied according to the position of the heat radiation fin. In step ST200, the concentration of the exhaust gas may be set by combining data acquired in the inlet, the outlet, and the inside of the EZC cooler.

(D) step (ST400), the front and rear of the heat dissipation unit inserted into the EZR cooler housing is set to the installation position of the fixing bar, the fixing bar is set to be located on the same line from the front, rear of the heat dissipation unit do. Step (e) (ST500), the fixing bar is inserted into the heat dissipation unit, it is made to fix the inserted fixing bar.

With reference to the drawings will be described in more detail with respect to the heat dissipation fin unit fixing method of the vehicle EZ cooler according to an embodiment of the present invention configured as described above.

3 is a view illustrating the wind speed of the exhaust gas inside the inlet of the EZ cooler 1 while the exhaust gas flows into the EZ cooler 1. For reference, the cross-sectional view shown on the right side of FIG. 3 is a view showing a cross-sectional state of X1-X1 'in the transverse direction of the EG cooler.

It can be seen that the exhaust gas is supplied with a predetermined flow rate inside the inlet of the EZC cooler 1 and the flow rate of the central portion is introduced and concentrated relatively faster than the flow rate at the left and right positions. This is because the connecting member coupled to the front of the EG cooler (1) is coupled in the form of expansion toward the EZ cooler (1) to concentrate the flow flow and velocity of the exhaust gas to the center of the EG cooler (1) Because it works.

4 is a view showing a cross-sectional state in the longitudinal direction in the Y-Y1 'direction and the Y2-Y2' direction of the vehicle easy cooler for a vehicle according to an embodiment of the present invention.

Referring to FIG. 4, it can be seen that the EG cooler 1 is supplied with a relatively high velocity of the flow rate of the center portion of the heat dissipation fin unit as compared to the upper and lower portions of the heat dissipation fin unit, such as the cross section of Y1-Y1 '. It can be seen that it is moved toward), and even in the cross section of Y2-Y2 ', the flow rate of the central portion of the heat radiation fin unit is confirmed to be supplied relatively faster than the upper and lower portions. Through this, the exhaust gas supplied to the EG cooler 1 can be seen that the flow rate is concentrated in the center of the heat radiation fin unit.

FIG. 5 is a cross-sectional view illustrating a vehicle easy cooler in a Z1'-Z1 direction and a Z1-Z1 'direction according to an embodiment of the present invention.

Referring to FIG. 5 (a), it can be seen that the flow velocity of the exhaust gas viewed in the Z1'-Z1 direction is concentrated to form a circle area at the center of one surface of the heat dissipation fin unit. It can be seen that the exhaust gas introduced into the gas is concentrated in the center region of the heat sink fin unit and is relatively decreased toward the left, right, up and down.

FIG. 5B is a diagram showing the static pressure state of the exhaust gas in the Z1-Z1 'direction.

Referring to FIG. 5 (b), it can be seen that the static pressure state of the exhaust gas viewed from the Z 1 -Z 1 ′ direction is concentrated at the center of the heat dissipation fin unit. It can be seen that the pressure decreases relatively.

FIG. 6 is a diagram illustrating a cross-sectional state of a vehicle easy cooler according to an embodiment of the present invention in the Y5'-Y5 'direction.

Referring to FIG. 6, it can be seen that the exhaust gas flows in the direction of the arrow from the right side of the EG cooler 1 and then diffuses inside the EG cooler 1 as pressure is concentrated in the center of the heat dissipation fin unit. As a result, it can be seen that the pressure concentration in the upper and lower parts is relatively smaller than that in the center.

Therefore, as a result of supplying the exhaust gas into the EG cooler 1 and performing a simulation (ST200), it was proved that the flow rate and the pressure of the exhaust gas were concentrated in the center of the heat radiation fin unit. The exhaust gas concentration region inside the cooler 1 may be set to the center portion of the heat radiation fin unit (ST300).

Positioning of the fixing bar according to the method of fixing the heat radiation fin unit of the vehicle easy-cooler for an vehicle according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 7, based on a simulation result of the exhaust gas introduced into the EZC cooler, a portion shown as a circle, which is a central portion of the heat dissipation fin unit 300, concentrates exhaust gas in which the flow velocity and pressure of the exhaust gas are concentrated. It is an area. The exhaust gas concentration region is a region where the flow velocity and the pressure are concentrated after the high temperature exhaust gas flows into the inside of the EG cooler 1, and thus, the exhaust gas concentration region is not preferable as a position for fixing the heat radiation fin unit 300. The position of the fixing bar 400 is set at a position out of the concentrated area (ST400).

For example, the fixing bar 400 may be disposed at upper and lower portions of the heat dissipation fin unit 300, respectively, and the upper and lower portions of the heat dissipation fin unit 300 may be affected by the flow rate and pressure of the exhaust gas. Since it corresponds to a position that is relatively small compared to the setting, the position is set to the installation position of the fixing bar 400 for fixing the heat radiation fin unit 300 (ST400), and install the fixing bar 400 (ST500) Installed in the state shown in.

The fixing bar 400 may be disposed in the horizontal direction of the heat dissipation fin unit 300 and may have the same thickness as that of the heat dissipation fin 320. If the thickness of the fixing bar 400 is made thicker than the thickness of the heat dissipation fins 320, the fixed bar 400 may cause resistance due to the flow of the exhaust gas or may generate a differential pressure, and thus, may have the same thickness.

With reference to the drawings will be described with respect to the configuration of a vehicle easy-cooler for a vehicle according to an embodiment of the present invention.

8 to 9, the EG cooler 1 is an EG cooler housing 100 formed in a rectangular shape, and the heat radiation fin unit 300 is disposed inside the IG cooler housing 100. It includes a heat dissipation unit 200 provided.

The EG cooler housing 100 is formed of an aluminum in which the inlet 102 and the outlet 104 in which the coolant flows into the upper surface are spaced apart from each other, and have excellent thermal conductivity.

The IR cooler housing 100 has a predetermined length (L) and extends, and the heat dissipation unit 200 is inserted therein. In the present exemplary embodiment, two heat dissipation units 200 are illustrated as being inserted into the inside of the RG cooler housing 100, but the heat dissipation unit 200 is not limited thereto.

The heat dissipation unit 200 is provided with a cooling water passage 203 opened from the upper surface to the lower surface for the inflow of the cooling water supplied through the inlet 102 or the outlet 104, and the cooling water passage 203 is a heat dissipation unit ( 200 is formed extending along the longitudinal direction. The number, length and width of the cooling water passage 203 are not particularly limited.

The heat dissipation unit 200 is provided with a partition wall 210 in an inner longitudinal direction, and the partition wall 210 divides the interior of the heat dissipation unit 200 at equal intervals. The partition wall 210 divides the inner region of the heat dissipation unit 200 independently, and is formed to communicate with the cooling water passage 203 described above outside the heat dissipation unit 200. As a result, the cooling water introduced through the cooling water passage 203 may be moved into the partition wall 210 to exchange heat with the high temperature exhaust gas supplied to the heat dissipation unit 200.

The heat dissipation fin units 300 are respectively inserted into the regions divided by the partition wall 210, and three are inserted into the front side and three are respectively inserted into the rear side with respect to the inside of the heat dissipation unit 200.

The heat dissipation fin unit 300 may be stably fixed without being separated or separated from the outside of the heat dissipation unit 200 while the fixing bar 400 is fixed to the insertion portion 211 provided in the partition wall 210. The insertion part 211 is disposed at the upper and lower portions of the partition wall 210, respectively, and includes a protrusion part 211a protruding outward of the partition wall 210 and a recess part 211b recessed inward.

A heat radiation fin unit according to an embodiment of the present invention will be described with reference to the drawings.

9, the heat dissipation unit 200 and the heat dissipation fin unit 300 may be manufactured as individual molds by a die casting method. The heat dissipation unit 200 is manufactured by one heat dissipation unit mold (not shown), and the heat dissipation fin unit 300 is made by using one heat dissipation fin unit mold (not shown), and thus the heat dissipation unit 200 and Design freedom of the heat dissipation fin unit 300 is improved, and restrictions on the shape are minimized.

The heat dissipation fin unit 300 includes a body 310 having a rectangular plate shape and a heat dissipation fin 320 integrally formed on an outer circumferential surface of the body 310. The body 310 is disposed vertically in the heat dissipation unit 200, the heat dissipation fins 320 are provided on both left and right sides in the horizontal direction with respect to the body 310, respectively.

The heat dissipation fin unit 300 may be inserted into the inner center of the heat dissipation unit 200, and left and right sides, respectively, one by one, and the heat dissipation fin 310 provided in the heat dissipation fin unit 300 may include Surface contact with the inner circumferential surface or the inner circumferential surface of the partition wall 210 is maintained.

The heat dissipation fin 320 is formed in a blade shape, and the upper and lower surfaces are symmetrically rounded. The heat dissipation fins 320 are made to decrease in area from the center in the longitudinal direction toward both ends, and a plurality of heat dissipation fins 320 are continuously spaced apart by a predetermined interval. The heat dissipation fin 320 is formed in the airfoil shape in order to minimize the occurrence of differential pressure by promoting a stable flow of the exhaust gas along the rounded, upper and lower surfaces.

The heat dissipation fins 320 are disposed at different positions on the left and right sides with respect to the front surface of the body 310, and the thickness is reduced toward the side of the heat dissipation unit 200.

Referring to the enlarged view, the heat dissipation fin 320 is relatively reduced in thickness (t2) of the end extending outward than the thickness (t1) of the portion connected to the body 310. When the heat dissipation fin 320 is formed as described above, when the exhaust gas supplied into the heat dissipation unit 200 comes into contact with the heat dissipation fin 320, the flow resistance is reduced, and the length of the heat dissipation fin 320 is reduced. Therefore, it can be moved more stably.

The heat dissipation fin unit 300 has an exhaust gas passage 302 formed between the heat dissipation fin 320 and the heat dissipation fin 320, and the exhaust gas passage 302 has the same front and rear surfaces. For example, assuming that the area of the front surface of the exhaust gas passage 302 is A1, and the area of the rear surface is A2, the areas of A1 and A2 are the same.

Therefore, the flow rate of the exhaust gas flowing into the front of the exhaust gas passage 302 and moving to the rear is kept constant, and the amount of easy egg is relatively small as the differential pressure difference between the front and the rear of the exhaust gas passage 302 is relatively generated. Can be kept constant.

A heat radiation fin unit according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

Referring to FIG. 10, the heat dissipation fin unit 300 is formed with an inclined portion 312 in which the upper and lower surfaces of the body 310 are inclined inward, respectively. The inclined portion 312 is provided to bond more stably while being in close contact with the inner circumferential surface of the heat dissipation unit 200 when the heat dissipation fin unit 300 is inserted into the heat dissipation unit 200.

The heat dissipation fin unit 200 is provided with a first protrusion 330 on the upper and lower surfaces of the body 310, and a second protrusion 340 is provided on the side surface of the heat dissipation fin 320. The plurality of first protrusions 330 are disposed along the upper surface of the body 310 and are formed of a first inclined portion 332 and a second inclined portion 334.

The first inclined portion 332 is inclined toward the front of the body 310, the second inclined portion 334 is inclined toward the rear of the body 310. When the heat dissipation fin unit 300 is press-fitted into the heat dissipation unit 200, the first protrusion 330 is deformed by the inner circumferential surface of the heat dissipation unit 200 and deformed to a free state, and the heat dissipation fin unit 300 is dissipated. The problem of falling out of the unit 200 is prevented.

The first protrusion 330 may be changed into various shapes and arrangements without being limited to the shapes and arrangements shown in the drawings, and the states shown in the drawings are shown as an example for clarity.

When the heat dissipation fin unit 300 is inserted into the heat dissipation unit 200, the upper and lower surfaces thereof are fixed by the first protrusion 330, and the side surfaces of the heat dissipation unit 200 are disposed by the second protrusion 340. It is fixed stably at.

The second protrusion 340 continuously extends along the longitudinal direction of the heat dissipation fin 310, is maintained in surface contact with the inner circumferential surface of the heat dissipation unit 200, and exhausted at a high temperature to the side of the heat dissipation unit 200. The heat of the gas passage can be conducted to achieve heat radiation.

A coupling state of a heat dissipation unit and a heat dissipation fin unit according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 11, the heat dissipation fin unit 300 is provided with a step 322 at a distal end of the upper surface of the body 310. The step 322 is coupled to the protruding piece 220 provided on the inner upper surface of the heat dissipation unit 200.

The heat dissipation fin unit 300 is provided with a step 322 only on the upper surface of the body 310 to ensure easy orientation of the operator when inserted into the front and rear of the heat dissipation unit 200, respectively, the worker step 322 ) Only to insert into the heat dissipation unit 200 in the state of checking only the position of. Therefore, when assembling the heat dissipation fin unit 300 into the heat dissipation unit 200 in a state where a plurality of heat dissipation fin units 300 are provided, the heat dissipation fin unit 300 can be accurately inserted without being misassembled.

The heat dissipation unit 200 is provided with a stopper 230 on the lower surface to prevent excessive insertion when the heat dissipation fin unit 300 is inserted. The stopper 230 is disposed to face the protrusion piece 220.

When the heat dissipation fin unit 300 is inserted into the heat dissipation unit 200, the front end portions of the stopper 230 and the body 310 are in surface contact, and excessive insertion of the heat dissipation fin unit 300 is prevented, and at the same time, the protruding piece 220 The step 322 is engaged with the) can be accurately inserted into the heat radiation fin unit (300).

The heat dissipation unit 200 is provided with an inclined portion 202, the inner upper surface and the lower surface inclined toward the center, respectively. The inclined portion 202 may be inclined with the same or similar inclination or angle as the inclined portion 312 of the body 210 described above.

An assembly state of the heat dissipation fin unit according to the exemplary embodiment of the present invention configured as described above will be described with reference to the accompanying drawings.

Referring to FIG. 11, when the heat dissipation fin unit 300 is inserted into the heat dissipation unit 200, the first protrusion 330 provided on the upper and lower surfaces of the heat dissipation fin unit 300 is inclined. It moves in the direction of the arrow while contacting the outer peripheral surface of the first protrusion 330 is deformed into a free shape by the pressing force applied from the rear of the heat radiation fin unit 300.

The heat dissipation fin unit 300 may be fixed on the upper and lower surfaces of the heat dissipation unit 200 while the first protrusion 330 is in surface contact with the inclined portion 202 of the heat dissipation unit 200. The fixing on the left and right sides of the heat dissipation fin unit 300 is maintained in a state in which the second protrusion 340 is in close contact with the inner circumferential surface of the heat dissipation unit 200.

The heat dissipation fin unit 300 has a step 322 coupled to the protruding piece 220, and the excessive insertion of the heat dissipation fin unit 300 is stopped by the stopper 230.

The worker may fix the front and rear surfaces of the heat dissipation unit 200 using the fixing member 250 to prevent the heat dissipation fin unit 300 from being separated from the heat dissipation unit 200.

The assembly state of the fixing bar according to an embodiment of the present invention configured as described above will be described with reference to the drawings.

Referring to FIG. 12 (a), the operator sets the fixing bar 400 to the groove part 211 b in accordance with the position of the insertion part 211 while the heat dissipation fin unit 300 is inserted into the heat dissipation unit 200. Combine with

Referring to FIG. 12B, the fixing bar 400 has a horizontal length similar to that of the heat dissipation fin unit 300, so that the fixing bar 400 is inserted into the groove portion 211b as shown in the drawing and is provided using a tool provided separately. When the upper and lower sides of the 211a are pressed, stable fixing of the fixing bar 400 inserted into the insertion unit 211 is completed.

The operating state of the vehicle easy-cooler for vehicles according to an embodiment of the present invention assembled as described above will be described with reference to the drawings.

Referring to FIG. 13, the fixing bar 400 is installed at the front and rear surfaces of the heat dissipation fin unit 300, respectively, and is positioned on the same line so that flow resistance and differential pressure are not generated due to the movement of the exhaust gas. Since it is made of stainless steel, heat transfer with the exhaust gas is also stable.

As shown in the enlarged view, the fixing bar 400 is stably coupled to the inside of the groove portion 211b of the insertion portion 211 and is maintained without being affected by pressure fluctuations and flow rates of the exhaust gas. Maintain a fixed state of 300).

The EG cooler 1 is introduced into the cooling water passage 203 of the heat dissipation unit 200 along the arrow shown by the dark solid line after the coolant flows through the inlet 102 and is moved through the partition wall 210. Gas is introduced into the heat radiation fin unit 300 as shown by a thin solid line. Since the cooling water and the exhaust gas are moved with separate movement paths, the cooling water and the exhaust gas are moved with or without mixing with each other.

The exhaust gas is moved along the exhaust gas passage 302 after the exhaust gas is moved to the heat radiation fin unit 300, and the heat of the high temperature exhaust gas is conducted through the heat radiation fin 320 and the body 310 and is in surface contact with the heat radiation unit. By the heat exchange with the cooling water moved through the 200, the temperature of the exhaust gas is lowered to a relatively low temperature state toward the outlet 104.

Exhaust gas is not bound in the opposite direction of the traveling direction of the exhaust gas in the a position of the heat dissipation fin 320, and is moved as it is along the outer circumferential surface of the heat dissipation fin 320, and the flow of the exhaust gas in the b position without mixing or staying mixed The diffusion is moved to the section 240.

The heat dissipation fin 320 is made thinner toward the side, so the resistance generated by the inflow of the exhaust gas can be minimized, and a constant flow rate is maintained while moving from the a position to the b position.

In addition, while maintaining the same area of A1 and A2, the difference in the differential pressure in A1 and A2 does not occur significantly as the exhaust gas moves, and thus the amount of easy grains can be kept constant.

After the exhaust gas passes through the heat radiating fin unit 300, diffusion occurs in the mixing section 240, and the flow rate of the exhaust gas is significantly lowered, thereby delaying movement to the heat radiating fin unit disposed in front for a predetermined time. The time at which heat exchange is performed at 200 is increased, thereby improving heat exchange efficiency.

The exhaust gas is continuously moved to the right side in the mixing section 240 as shown in the drawing by the continuous supply pressure of the exhaust gas supplied to the RG cooler housing 100. In the mixing section 240 it is possible to achieve the heat dissipation of the cooling water through the heat dissipation unit 200 while the exhaust gas is mixed.

The heat dissipation fins 320 are disposed at different positions inside the heat dissipation unit 200 to delay the movement of the exhaust gas, and the heat exchange is performed in the heat dissipation unit 200 during the time that the exhaust gas is delayed. Decreases.

The exhaust gas is moved to the outside of the EZC cooler 1 via the heat dissipation fin unit 300 located below the outlet 104 through which the coolant is discharged, and then is supplied back to the engine (not shown) and the EZR cooler ( Continued recirculation to 1), where the coolant and heat exchange can take place.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

1: EZR Cooler
100: EZR Cooler Housing
200: heat dissipation unit
210: bulkhead
230: stopper
240: mixing section
300: heat radiation fin unit
302: exhaust gas passage
310: Body
320: heat radiation fins
322: step
330: first projection
340: second projection
400: Fixed Bar

Claims (21)

(a) supplying exhaust gas into the RIG cooler;
(b) simulating a movement state of the exhaust gas moved along the inside of the EZC cooler;
(c) setting an exhaust gas concentration region inside the EZC cooler according to the movement of the exhaust gas;
(d) setting a position for fixing the heat dissipation fin unit to a position outside the exhaust gas concentration region; And
(e) a method of fixing a heat dissipation fin unit of an EZR cooler for a vehicle, comprising installing a fixing bar at a position outside the exhaust gas concentration region. The method according to claim 1,
The step (b)
And obtaining data on the velocity and pressure of the exhaust gas inside the EZC cooler, and applying the obtained data according to the position of the heat radiation fin. The method according to claim 1,
The step (b)
A method of fixing a heat radiation fin unit of a vehicle easy cooler for setting an exhaust gas concentration region by combining data acquired at an inlet, an outlet, and an inside of the easy cooler. The method according to claim 1,
The step (d)
The front and rear surfaces of the heat dissipation fin unit inserted into the easy cooler housing are set to the installation position of the fixing bar, but the installation position of the fixing bar is set to be located in the same line on the front and rear of the heat dissipation unit. How to fix the heat sink fin unit. The method according to claim 1,
In step (e),
Inserting the fixing bar into the heat dissipation unit;
The method of fixing a heat radiation fin unit of a vehicle RG cooler comprising the step of fixing the inserted fixing bar. An EZ cooler housing provided with a passage through which the coolant moves;
A heat dissipation unit disposed in the EZC cooler housing and provided with a partition wall for partitioning the inside of the EZC cooler housing;
A heat dissipation fin unit provided with a heat dissipation fin integrally formed with a body inserted into the heat dissipation unit; And
Vehicle easy cooler including a fixing bar respectively installed on the front and rear of the heat dissipation unit for fixing the heat dissipation fin unit. The method of claim 6,
The fixing bar,
Easy-to-use car cooler installed on bulkhead of heat dissipation unit. The method of claim 6,
The fixing bar,
Vehicle easy cooler disposed in the horizontal direction of the heat radiation fin unit. The method of claim 6,
The fixing bar,
ESR cooler for vehicle, which is installed at the upper and lower parts of the front and rear of the heat radiating fin unit, respectively. The method of claim 6,
The fixing bar,
A vehicle easy cooler made of the same thickness as the heat sink fins. The method of claim 6,
Wherein,
Easy-to-use car cooler provided with an insertion groove for inserting a fixed bar. The method of claim 6,
The fixing bar,
Vehicle easy cooler characterized by using stainless steel. The method of claim 6,
The body,
An easy-to-use vehicle cooler including an inclined portion of which the upper and lower surfaces are inclined inward toward the center of the heat dissipation unit. The method of claim 6,
The heat dissipation fin unit,
First projections provided on the upper and lower surfaces of the body to achieve fixing in the heat dissipation unit;
Vehicle easy cooler further comprises a second projection provided on the side of the heat dissipation fins. 15. The method of claim 14,
The first protrusion is,
An easy-to-use car cooler arranged in a plurality spaced apart along the upper and lower surfaces of the body. 15. The method of claim 14,
The first protrusion is,
Vehicle easy cooler that is deformed to a free state when the heat radiation fin unit is pressed into the heat radiation unit. 15. The method of claim 14,
The first protrusion is,
A first inclined portion inclined toward the front of the body;
Vehicle easy cooler comprising a second inclined portion inclined toward the rear of the body. 15. The method of claim 14,
The second protrusion is,
Vehicle easy cooler formed continuously extending along the longitudinal direction of the heat radiation fins. The method of claim 6,
The heat dissipation fin unit,
Vehicle easy cooler provided with a stepped end of the upper body. The method of claim 19,
The heat-
Vehicle easy cooler further comprises a protrusion coupled to the step of the body. The method of claim 6,
The heat-
Vehicle easy cooler further comprises a stripper for preventing excessive insertion of the heat radiation fin unit.

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