KR102407667B1 - Cooling fin and water cooling type heat exchanger including the same - Google Patents

Abstract

A cooling fin according to an embodiment is a plate extending in a first direction as a cooling fin for applying a water-cooled heat exchanger, a plurality of louver fins spaced apart from each other on the plate and disposed at a first inclination angle, and formed between the plurality of louver fins an upper region including the plurality of louver fins, a lower region including the plurality of louver fins, and an intermediate region including the plurality of louver fins and disposed between the upper and lower regions. and, each of the upper region, the middle region, and the lower region may include an insertion region guiding the fluid in a first flow direction and an outlet region guiding the fluid in a second flow direction.

Description

Cooling fin and water-cooled heat exchanger including same

The embodiment relates to a cooling fin having improved characteristics and a water-cooled heat exchanger including the same.

As interest in the atmospheric environment increases, regulations on exhaust gas emitted from automobiles, boilers, and power generation facilities are being enforced. For example, in automobiles, there is a problem in that exhaust gases such as nitrogen oxides (NO _x ), carbon monoxide (CO), and fine dust are generated by the combustion of fossil fuels, and regulations to reduce them are being implemented worldwide.

In particular, a diesel vehicle starts in a different way from a gasoline vehicle, and since the diesel has a higher carbon number than gasoline, the diesel vehicle has a problem in generating a greater amount of soot and nitrogen oxides than the gasoline vehicle. The above-mentioned nitrogen oxides act as precursors to form ozone (O3), can cause acid rain, and are fatal to the environment. In addition, nitrogen oxides can cause various skin diseases and respiratory diseases, which is fatal to not only humans but also various animals and plants.

For this reason, there is a need to manage the emission of nitrogen oxides from the viewpoint of environment and health, and various devices are provided to reduce them. For example, as a device for reducing air pollutants such as nitrogen oxides emitted from vehicles, a selective catalyst reduction (SCR), a diesel particulate filter (DPF), an exhaust gas recirculation device (EGR; Exhaust Gas Recirculation).

First, a device (SCR) using a selective catalytic reduction method is a device for purifying nitrogen oxides generated in diesel vehicles. In detail, the device (SCR) is a device that injects ammonia (NH ₃ ), urea (Urea, NH ₂ (2CO)) aqueous solution, etc. called urea water to the exhaust gas, and the catalytic reaction of the urea water and the exhaust gas It is a device that converts the exhaust gas into water (H2O) and nitrogen (N ₂ ).

In addition, a device using a diesel particulate filter (DPF) physically collects residues such as hydrocarbon residues generated without complete combustion of diesel, a fossil fuel, using a filter, and burns the collected residues at a high temperature of about 500°C or higher to pollute them. It is a device that reduces material.

In addition, the exhaust gas recirculation device (EGR) is a device capable of reducing the formation of nitrogen oxides by recirculating the exhaust gas burned in the engine. For example, there is a problem in that the amount of nitrogen oxides formed at a high temperature of 2,000° C. or more rapidly increases. Accordingly, the exhaust gas recirculation device is a device for cooling a part of the exhaust gas and recirculating the cooled exhaust gas to the combustion chamber to lower the temperature of the combustion chamber. That is, the exhaust gas recirculation device is a device for reducing the formation of nitrogen oxides by lowering the temperature of the combustion chamber. To this end, the exhaust gas recirculation device may include a heat exchanger capable of cooling the exhaust gas.

However, the hot exhaust gas provided to the heat exchanger may be difficult to cool effectively at a high flow rate. For example, it may be difficult to effectively cool the exhaust gas due to a short flow distance and residence time in the heat exchanger. In this case, the exhaust gas may not be cooled to a set temperature and may be re-introduced into the combustion chamber, thereby causing incomplete combustion.

In addition, the heat exchanger may be applied to an intercooler. For example, the heat exchanger may be applied to a supercharger connected to a turbine, for example, an intercooler disposed between an impeller and an intake manifold. The impeller may suck in a large amount of air and may supply the sucked air to an intake manifold. In this case, the sucked air may be compressed during movement and present at a high temperature, and a high temperature may be maintained in a high-temperature exhaust pipe located around the impeller and the intake manifold. As such, when the intake air is at a high temperature, the density of oxygen is lowered, and as a result, there is a problem in that the filling efficiency in the cylinder is lowered or a knocking phenomenon occurs. To prevent this, a heat exchanger may be disposed between the impeller and the intake manifold, and the intercooler may serve to cool compressed high-temperature air and supply air having a high oxygen density to the engine cylinder.

However, it may be difficult to effectively cool the hot air provided to the heat exchanger during the flow process. For example, it may be difficult to effectively cool the exhaust gas due to a short flow distance and residence time in the heat exchanger. As such, when high-temperature air is provided to the engine, the combustion efficiency of the engine is lowered, and thus, the effect of increasing the fuel efficiency of the vehicle may be insignificant or deteriorated. In addition, the effect of reducing the emission of exhaust gas such as nitrogen oxide (NO _x ), carbon monoxide (CO), fine dust, etc. generated during combustion is insignificant or there may be a problem in that the emission is increased.

In addition, the temperature distribution of the air discharged through the heat exchanger may be non-uniform depending on the location. Accordingly, there may be a problem in that the temperature distribution of the air provided to each of the plurality of cylinders of the engine is non-uniform.

Accordingly, there is a need for a new heat exchanger capable of solving the above problems.

(Patent Document 1) Chinese Patent Publication No. 101178292 (20080514)
(Patent Document 2) Chinese Utility Model Registration Publication 201600048 (20101006)
(Patent Document 3) Japanese Patent Laid-Open No. 2003-050095 (20030221)
(Patent Document 4) Japanese Patent Laid-Open No. 2017-048948 (20170309)
(Patent Document 5) Japanese Patent Publication No. 2017-538890 (20171228)

The embodiment is intended to provide a cooling fin and a heat exchanger capable of effectively cooling the supplied fluid.

Further, embodiments are intended to provide cooling fins and heat exchangers with improved flow paths.

In addition, the embodiment is to provide a heat exchanger in which the temperature deviation of the cooled fluid is minimized.

A cooling fin according to an embodiment is a plate extending in a first direction as a cooling fin for applying a water-cooled heat exchanger, a plurality of louver fins spaced apart from each other on the plate and disposed at a first inclination angle, and formed between the plurality of louver fins an upper region including the plurality of louver fins, a lower region including the plurality of louver fins, and an intermediate region including the plurality of louver fins and disposed between the upper and lower regions. and, each of the upper region, the middle region, and the lower region may include an insertion region guiding the fluid in a first flow direction and an outlet region guiding the fluid in a second flow direction.

In addition, the first inclination angle may be 25 to 40 degrees.

In addition, within the range of the first inclination angle, the plurality of louver fins respectively disposed in the upper region, the middle region, and the lower region may have the same inclination angle and have a shape corresponding to each other.

In addition, within the range of the first inclination angle, the inclination angle of the plurality of louver fins disposed in the upper region is greater than the inclination angle of the plurality of louver fins disposed in the middle region, and the plurality of louvers disposed in the middle region An inclination angle of the fin may be greater than an inclination angle of the plurality of louver fins disposed in the lower region.

In addition, the heat exchanger according to the embodiment includes an inlet through which a fluid is introduced, an outlet through which the fluid is discharged, and a cooling unit disposed between the inlet and the outlet, and cooling the fluid, wherein the cooling unit includes an accommodation space. The formed body, and a plurality of partition walls disposed in the accommodation space of the body. a plurality of flow paths formed by the plurality of partition walls and a plurality of cooling fins disposed on each of the plurality of flow paths, wherein the cooling fins include the above-described cooling fins, and the fluid flowing into the cooling unit is The flow direction can be changed at least 5 times by the cooling fins.

In addition, the discharge part includes first to fourth discharge holes spaced apart from each other, and the cooling fins are first to fourth areas disposed in areas corresponding to the first to fourth discharge holes in the first direction, respectively. Including, the plurality of louver fins respectively disposed in the first to fourth regions may have shapes corresponding to each other.

In addition, the discharge part includes first to fourth discharge holes spaced apart from each other, and the cooling fins are first to fourth areas disposed in areas corresponding to the first to fourth discharge holes in the first direction, respectively. wherein the first area is disposed on an edge area of the cooling unit adjacent to a first side surface of the cooling unit, and the fourth area is an edge of the cooling unit adjacent to a second side surface of the cooling unit opposite to the first side surface. is disposed in the region, the second and third regions are disposed between the first and fourth regions and are disposed in a central region of the cooling unit, and the inclination angle of the plurality of louver fins disposed in the first region is the second The inclination angle of the plurality of louver fins disposed in the fourth region may decrease in the direction of the second region and decrease in the direction of the third region.

The heat exchanger according to the embodiment may include a cooling unit including a plurality of louver fins, and the fluid supplied to the cooling unit may have an increased flow path by the louver fins. Accordingly, the fluid supplied to the cooling unit can be efficiently heat exchanged with the cooling fins including the louver fins.

In addition, the heat exchanger according to the embodiment may change the flow direction of the supplied fluid at least 5 times. Accordingly, the fluid supplied to the cooling unit can be sufficiently mixed in the cooling unit, thereby minimizing the temperature deviation of the fluid discharged to the edge region and the center region of the cooling unit, respectively. Accordingly, the heat exchanger can improve filling efficiency in other components connected thereto, for example, in a connected cylinder and prevent a knocking phenomenon from occurring.

1 is a perspective view of a cooling fin according to an embodiment;
FIG. 2 is a front view of the cooling fin according to FIG. 1 ;
3 is a cross-sectional view AA′ of the cooling fin according to FIG. 1 .
FIG. 4 is a partially enlarged view of the cooling fin according to FIG. 1 .
5 is a perspective view of another cooling fin according to the embodiment.
6 is a cross-sectional view BB′ of the cooling fin according to FIG. 5 .
7 is an exploded perspective view of a heat exchanger according to the embodiment.
8 and 9 are side views of a heat exchanger according to an embodiment.
10 is a view for explaining a flow flow of a fluid introduced into a heat exchanger according to an embodiment.
11 is a front view in which cooling fins are omitted from the cooling unit of the heat exchanger according to the embodiment.
12 is another side view of the cooling unit according to the embodiment.
13 is a view for explaining a flow flow of cooling water flowing by a cooling water supply unit according to an embodiment.

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

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected between the embodiments. It can be used by combining or substituted with .

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention belongs, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "and (and) at least one (or one or more of) B and C", it can be combined with A, B, and C. It may include one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term. And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on "above (above) or below (below)" of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components. In addition, when expressed as “up (up) or down (down)”, it may include not only the upward direction but also the meaning of the downward direction based on one component.

In addition, the heat exchanger according to the embodiment may be applicable to various devices requiring cooling of a flowing fluid, for example, an exhaust gas recirculation (EGR) of a vehicle, an intercooler, and the like. In addition, the heat exchanger according to the embodiment can be applied to various fields as well as vehicles, and in addition, it can be applied to all cooling fields that have been developed and commercialized or can be implemented according to future technological development.

In addition, prior to the description of the embodiment of the present invention, the first direction may mean the x-axis direction shown in the drawings, and the second direction may be a different direction from the first direction. For example, the second direction may mean a y-axis direction shown in the drawing in a direction perpendicular to the first direction. Also, the horizontal direction may mean first and second directions, and the vertical direction may mean a direction perpendicular to at least one of the first and second directions. For example, the horizontal direction may mean the x-axis and y-axis directions of the drawing, and the vertical direction may be a z-axis direction of the drawing and a direction perpendicular to the x-axis and y-axis directions.

<Cooling fins>

The cooling fin 500 according to the embodiment may be a cooling fin for application to a water-cooled heat exchanger. The cooling fins 500 may be disposed in the cooling unit 200 of the heat exchanger 1000 to be described later. The cooling fins 500 are provided in the same plurality as the plurality of flow paths 230 included in the heat exchanger 1000 , and may be disposed in each of the plurality of flow paths 230 .

Since the plurality of cooling fins 500 have the same shape and size as each other, for convenience of description, one cooling fin 500 disposed in one flow path 230 selected from among the plurality of flow paths 230 is centered on the plurality of cooling fins 500 . Explain. The remaining cooling fins that are not described may be understood from the description of the single cooling fin 500 .

1 is a perspective view of a cooling fin according to an embodiment, and FIG. 2 is a front view of the cooling fin according to FIG. 1 . In addition, FIG. 3 is a top view of the cooling fin according to FIG. 1 , and FIG. 4 is a partially enlarged view of the cooling fin according to FIG. 1 .

1 to 4 , the cooling fin 500 may include a plate 510 . The plate 510 may be disposed on the flow path 230 of the cooling unit 200 in which the cooling fins 500 are disposed and may have a shape extending in one direction. For example, the plate 510 extends from an upper region of the cooling unit 200 facing the inlet 100 of the heat exchanger 1000 to be described later in a downward direction facing the outlet 300 . , that is, it may have a shape extending in the first direction (x-axis direction).

Also, the plate 510 may have a wave shape. In detail, when the plate 510 is viewed from the first direction, the plate 510 may have a shape in which a plurality of wave patterns bent at a first pitch interval P1 are repeated.

The cooling fin 500 may include a plurality of louver fins 520 . The plurality of louver pins 520 may be formed on the plate 510 . The plurality of louver pins 520 may have a plate shape and may be bonded to the plate 510 . For example, the plurality of louver pins 520 may be bonded to the plate 510 by brazing.

The plurality of louver pins 520 may be spaced apart from each other. For example, the plurality of louver pins 520 may be spaced apart from each other in a first direction (x-axis direction) that is the inflow direction of the fluid. The plurality of louver pins 520 may be spaced apart from each other at equal intervals. Accordingly, a plurality of flow slits 530 may be formed between the plurality of louver pins 520 , and the fluid supplied to the cooling unit 200 may flow through the flow slits 530 . .

The plurality of louver pins 520 may be inclined at a predetermined angle. For example, the plurality of louver pins 520 may be disposed to be inclined at a first inclination angle θ with respect to one surface of the plate 510 . In detail, the plurality of louver pins 520 may be disposed at a first inclination angle θ with respect to a first virtual straight line Line 1 extending in the first direction. For example, the first inclination angle θ may be about 25 degrees to about 40 degrees. In detail, the first inclination angle θ may be about 28 degrees to about 37 degrees. In more detail, the first inclination angle θ may be about 30 degrees to about 35 degrees.

When the first inclination angle θ is less than about 25 degrees, the flow path of the fluid supplied to the cooling fins 500 may decrease, so that it may be difficult to sufficiently cool the fluid while passing through the cooling fins 500 . Accordingly, the fluid provided to the lower region of the cooling unit 200 may have a temperature deviation depending on the location. For example, a first discharge hole h1 , a second discharge hole h2 , a third discharge hole h3 and a fourth discharge hole h4 formed in the discharge unit 300 of the heat exchanger 1000 to be described later The temperature deviation of each discharged fluid may exceed the set range. In addition, when the first inclination angle θ exceeds about 40 degrees, the flow path of the fluid in the cooling fins 500 may increase excessively, so that the flow of the fluid may not be smooth. Accordingly, the first inclination angle θ preferably satisfies the above-described range, and the plurality of louver pins 520 may be provided at the same inclination angle within the above-described range.

The cooling fin 500 may include a plurality of regions in which a plurality of louver fins 520 are respectively disposed. For example, the cooling fin 500 may include an upper region 501 , an intermediate region 502 , and a lower region 503 set based on the inflow and outflow directions of the fluid.

The upper region 501 may be located in an upper region of the cooling unit 200 of the heat exchanger 1000 to be described later and may be the region closest to the inlet unit 100 . The upper region 501 may include a first insertion region 501a and a first discharge region 501b in which a plurality of louver pins 520a are disposed. In addition, the upper region 501 may include a first connection region 541 disposed between the first insertion region 501a and the first discharge region 501b and connecting the two regions 501a and 501b. can

The first insertion region 501a may have a shape symmetrical to the first discharge region 501b. In detail, the louver fins 520a disposed in each of the first insertion region 501a and the first discharge region 501b are imaginary extending in the second direction with respect to the first connection region 541, for example. They may be arranged in a shape, position, angle, and number symmetrical to each other based on the line.

Accordingly, the fluid introduced into the upper region 501 may flow in the first and second flow directions through the plurality of flow slits 530a formed by the plurality of louver pins 520a formed. In detail, the fluid introduced into the first insertion region 501a may flow in a first flow direction corresponding to the plurality of louver pins 520a disposed in the first insertion region 501a, and the first discharge The fluid introduced into the region 501b may flow in a second flow direction corresponding to the plurality of louver fins 520a disposed in the first discharge region 501b. In this case, the first connection region 541 may be provided in a concave shape with respect to the second direction (y-axis direction). Accordingly, the first connection region 541 may guide the flow direction of the fluid flowing in the first flow direction through the first insertion region 501a in the second flow direction, and guide the fluid in the second flow direction. 1 may be guided to the discharge area 501b.

The middle region 502 may be located below the upper region 501 . In detail, the middle region 502 may be positioned between the upper region 501 and the lower region 503 and be closer to the discharge unit 300 than the upper region 501 .

In this case, a first boundary region 561 may be disposed between the upper region 501 and the middle region 502 . The first boundary region 561 may connect the upper region 501 and the middle region 502 . The first boundary area 561 may be provided in a convex shape with respect to the second direction (y-axis direction). In detail, the first boundary area 561 may have a shape that is 180 degrees symmetrical to the first connection area 541 with respect to the first discharge area 501b. Accordingly, the first boundary region 561 may guide the fluid passing through the first discharge region 501b to the intermediate region 502 . For example, the first boundary region 561 may guide the flow direction of the fluid flowing in the second flow direction through the first discharge region 501b in the first flow direction, and direct the fluid to the first flow direction. An intermediate region 502 can be guided.

The intermediate region 502 may include a second insertion region 502a and a second discharge region 502b in which a plurality of louver pins 520b are disposed. Further, the intermediate region 502 may include a second connecting region 542 disposed between the second insertion region 502a and the second exhaust region 502b and connecting the two regions 502a, 502b. can

The second insertion area 502a may have a shape corresponding to the first insertion area 501a. In detail, the second insertion region 502a may include a plurality of louver pins 520b having the same shape, angle, number, and spacing as the first insertion region 501a.

Also, the second discharge area 502b may have a shape corresponding to that of the first discharge area 501b. In detail, the second discharge area 502b may include a plurality of louver fins 520b having the same shape, angle, number, and spacing as the first discharge area 501b.

Also, the second insertion region 502a may have a shape symmetrical to the second discharge region 502b. In detail, the louver pins 520b disposed in each of the second insertion area 502a and the second discharge area 502b are virtual virtual extensions extending in the second direction with respect to the second connection area 542 , for example. They may be arranged in a shape, position, angle, and number symmetrical to each other based on the line.

That is, the middle region 502 may correspond to the upper region 501 . In detail, the plurality of louver fins 520b disposed in the middle region 502 may have a shape, angle, number, and separation distance corresponding to the plurality of louver fins 520a disposed in the upper region 501 . have.

Accordingly, the fluid introduced into the intermediate region 502 may flow in the first and second flow directions through the plurality of flow slits 530b formed by the plurality of louver pins 520b formed. In detail, the fluid introduced into the second insertion region 502a may flow in a first flow direction corresponding to the plurality of louver pins 520b disposed in the second insertion region 502a, and the second discharge The fluid introduced into the region 502b may flow in a second flow direction corresponding to the plurality of louver fins 520b disposed in the second discharge region 502b. In this case, the second connection region 542 may be provided in a concave shape with respect to the second direction (y-axis direction). Accordingly, the second connection region 542 may guide the flow direction of the fluid flowing in the first flow direction through the second insertion region 502a in the second flow direction, and guide the fluid in the second flow direction. 2 can be guided to the discharge area 502b.

The lower region 503 may be located below the middle region 502 . In detail, the lower region 503 may be located in a lower region of the cooling unit 200 of the heat exchanger 1000 to be described later and may be the region closest to the discharge unit 300 .

In this case, a second boundary region 562 may be disposed between the middle region 502 and the lower region 503 . The second boundary region 562 may connect the middle region 502 and the lower region 503 . The second boundary region 562 may be provided in a convex shape with respect to the second direction (y-axis direction). In detail, the second boundary area 562 may have a shape that is 180 degrees symmetrical to the second connection area 542 with respect to the second discharge area 502b. Accordingly, the second boundary region 562 may guide the fluid passing through the second discharge region 502b to the lower region 503 . For example, the second boundary region 562 may guide a flow direction of a fluid flowing in a second flow direction through the second discharge region 502b in a first flow direction, and direct the fluid to the first flow direction. It can guide to the lower region 503 .

The lower region 503 may include a third insertion region 503a and a third discharge region 503b in which a plurality of louver pins 520c are disposed. In addition, the lower region 503 may include a third connection region 543 disposed between the third insertion region 503a and the third discharge region 503b and connecting the two regions 503a and 503b. can

The third insertion area 503a may have a shape corresponding to the first insertion area 501a and the second insertion area 502a. In detail, the third insertion region 503a includes a plurality of louver pins 520c having the same shape, angle, number and spacing as the first insertion region 501a and the second insertion region 502a. can do.

Also, the third discharge area 503b may have a shape corresponding to the first discharge area 501b and the second discharge area 502b. In detail, the third discharge area 503b includes a plurality of louver fins 520c having the same shape, angle, number and spacing as the first discharge area 501b and the second discharge area 502b. can do.

Also, the third insertion region 503a may have a shape symmetrical to the third discharge region 503b. In detail, the louver pin 520c disposed in each of the third insertion region 503a and the third discharge region 503b is a virtual fin 520c extending in, for example, the second direction with respect to the third connection region 543 . They may be arranged in a shape, position, angle, and number symmetrical to each other based on the line.

That is, the lower region 503 may correspond to the upper region 501 and the middle region 502 . In detail, the plurality of louver fins 520c disposed in the lower region 503 correspond to the plurality of louver fins 520a and 520b disposed in the upper region 501 and the middle region 502, respectively. , angle, number, and separation distance.

Accordingly, the fluid introduced into the lower region 503 may flow in the first and second flow directions through the plurality of flow slits 530c formed by the plurality of louver pins 520c formed. In detail, the fluid introduced into the third insertion region 503a may flow in a first flow direction corresponding to the plurality of louver pins 520c disposed in the third insertion region 503a, and the third discharge The fluid introduced into the region 503b may flow in a second flow direction corresponding to the plurality of louver fins 520c disposed in the third discharge region 503b. In this case, the third connection region 543 may be provided in a concave shape with respect to the second direction (y-axis direction). Accordingly, the third connection region 543 may guide the flow direction of the fluid flowing in the first flow direction through the third insertion region 503a in the second flow direction, and guide the fluid in the second flow direction. 3 may be guided to the discharge area 503b.

In addition, the cooling fins 500 may include a plurality of regions set based on a region from which a fluid is discharged, for example, a discharge unit 300 of the heat exchanger 1000 to be described later. In detail, the cooling fin 500 may include a plurality of regions set based on a plurality of discharge holes h1 , h2 , h3 and h4 formed in the discharge unit 300 to be described later. The plurality of regions may be arranged side by side in the second direction. The plurality of regions may be provided in a number corresponding to the plurality of discharge holes h1, h2, h3, and h4, and may be disposed in regions corresponding to the first direction (x-axis direction). For example, when there are four discharge holes h1 , h2 , h3 , and h4 , the cooling fins 500 are arranged in a first area A1 , a second area A2 , and a second area side by side in the second direction. It may include a third area A3 and a fourth area A4 .

The first area A1 is disposed adjacent to the first side surface S1 of the cooling unit 200 and is disposed in an area corresponding to the first discharge hole h1 in the first direction (x-axis direction). can The second area A2 may be disposed side by side with the first area A1 in a second direction (y-axis direction) and may be disposed in an area corresponding to the second discharge hole h2 in the first direction. The third area A3 may be disposed side by side with the second area A2 in the second direction and may be disposed in an area corresponding to the third discharge hole h3 in the first direction. The fourth area A4 is disposed adjacent to the second side surface S2 opposite to the first side surface S1 of the cooling unit 200 and is disposed side by side with the third area A3 in the second direction. can Also, the fourth area A4 may be disposed in an area corresponding to the fourth discharge hole h4 in the first direction.

That is, the first area A1 and the fourth area A4 disposed adjacent to the first side surface S1 and the second side surface S2, respectively, are located in the edge area of the cooling unit 200 . area, and the second area A2 and the third area A3 may be defined as areas located in a central area of the cooling unit 200 .

Each of the first to fourth regions A1 , A2 , A3 , and A4 includes the plurality of louver fins 520 , and the upper region 501 , the middle region 502 , and the lower region 503 . may include

In this case, the first to fourth regions A1 , A2 , A3 , and A4 may have shapes corresponding to each other. In detail, a plurality of louver fins 520 disposed in the upper region 501 , the middle region 502 , and the lower region 503 of each of the first to fourth regions A1 , A2 , A3 , and A4 are shown in FIG. 10 . may have the same number and may be disposed at positions corresponding to each other. In addition, the plurality of louver fins 520 disposed in the upper region 501 , the middle region 502 , and the lower region 503 of each of the first to fourth regions A1 , A2 , A3 and A4 are identical to each other. It may be provided with an inclination angle. Accordingly, the plurality of flow slits 530a, 530b, and 530c formed in the upper region 501, the middle region 502, and the lower region 503 of each of the first to fourth regions A1, A2, A3, and A4. ) may have the same shape and size, so that the fluid provided to the cooling unit 200 may have improved flow characteristics.

That is, the heat exchanger 1000 according to the embodiment includes a plurality of louver fins 520 for controlling the flow path of the fluid, and the plurality of louver fins 520 include the upper region 501 and the middle region ( 502) and the lower region 503 may be provided in a number and angle corresponding to each other.

Accordingly, the heat exchanger 1000 may flow the fluid supplied to the cooling unit 200 in the first and second flow directions using the plurality of louver fins 520 . In detail, the flow direction of the fluid may be changed at least 5 times by the louver pin 520 . For example, a flow direction of the fluid introduced into the cooling unit may change from a first flow direction to a second flow direction while flowing through the upper region 501 . In addition, the flow direction of the fluid may change from the second flow direction to the first flow direction during the flow of the boundary (the first boundary area 561) between the upper region 501 and the middle region 502. have. Also, in the process of flowing the intermediate region 502 , the flow direction of the fluid may change from the first flow direction to a second flow direction. In addition, the flow direction of the fluid may change from the second flow direction to the first flow direction during the flow of the boundary between the middle region 502 and the lower region 503 (the second boundary region 562 ). have. Also, in the process of flowing the lower region 503 , the flow direction of the fluid may change from the first flow direction to a second flow direction.

Accordingly, the embodiment may increase the flow path of the fluid supplied to the cooling unit 200 and induce efficient heat exchange between the fluid and the cooling fins 500 . In addition, the heat exchanger 1000 can sufficiently mix the fluid in the cooling unit 200 by changing the flow direction of the supplied fluid at least 5 times, so that the edge area of the cooling unit 200 and It is possible to minimize the temperature deviation of the fluids respectively discharged to the central region. That is, it is possible to minimize the temperature deviation of the fluid discharged through the plurality of discharge holes h1, h2, h3, and h4 disposed at different positions, thereby improving the filling efficiency in the cylinder and a knocking phenomenon. can prevent this from happening.

In addition, although not shown in the drawings, the plurality of louver fins 520 may be provided at different angles and/or different numbers in each of the upper region 501 , the middle region 502 , and the lower region 503 .

For example, the plurality of louver fins 520a disposed in the upper region 501 of each of the first to fourth regions A1, A2, A3, and A4 may be provided with the same number and pitch interval as each other, and the They may be disposed to be inclined at the same angle to each other within the range of the first inclination angle θ.

A plurality of louver fins 520b disposed in the middle region 502 of each of the first to fourth regions A1, A2, A3, and A4 may be provided at the same number and pitch interval, and the first inclination angle It may be disposed to be inclined at the same angle to each other within the range of (θ).

In this case, the inclination angle of the plurality of louver fins 520b disposed in the middle region 502 may be smaller than the inclination angle of the plurality of louver fins 520a disposed in the upper region 501 . In detail, the inclination angle of the plurality of louver fins 520b disposed in the middle region 502 within the range of the first inclination angle θ is greater than the inclination angle of the plurality of louver fins 520a disposed in the upper region 501 . can be small

In addition, the number of the plurality of louver fins 520b disposed in the middle region 502 may be greater than or equal to the number of the plurality of louver fins 520a disposed in the upper region 501 . That is, more or the same number of flow slits 530b than the upper region 501 may be formed in the middle region 502 .

In addition, when the number of louver fins 520b disposed in the middle region 502 is greater than the number of the plurality of louver fins 520a disposed in the upper region 501 , the number of louver fins 520a disposed in the middle region 502 is A pitch interval in the first direction between the plurality of louver pins 520b may be smaller than a pitch interval in the first direction between the plurality of louver pins 520a disposed in the upper region 501 . In addition, when the number of louver fins 520b disposed in the middle region 502 is the same as the number of louver fins 520a disposed in the upper region 501 , it is disposed in the middle region 502 . A pitch interval in the first direction between the plurality of louver fins 520b may be the same as a pitch interval in the first direction between the plurality of louver fins 520a disposed in the upper region 501 .

That is, the fluid provided in the middle region 502 may flow while being bent at a smaller angle than that of the upper region 501 . In addition, as the louver fin 520b formed in the intermediate region 502 is provided with a larger inclination angle than the louver fin 520a formed in the upper region 501 , the flow path of the fluid supplied to the intermediate region 502 . may be longer than that of the upper region 501 .

A plurality of louver fins 520c disposed in the lower region 503 of each of the first to fourth regions A1, A2, A3, and A4 may be provided with the same number and pitch interval, and the first inclination angle It may be disposed to be inclined at the same angle to each other within the range of (θ).

In this case, the inclination angle of the plurality of louver fins 520c disposed in the lower region 503 may be smaller than the inclination angle of the plurality of louver fins 520b disposed in the middle region 502 . In detail, the inclination angle of the plurality of louver fins 520c disposed in the lower region 503 within the range of the first inclination angle θ is greater than the inclination angle of the plurality of louver fins 520b disposed in the middle region 502 . can be small

In addition, the number of the plurality of louver fins 520c disposed in the lower region 503 may be greater than or equal to the number of the plurality of louver fins 520b disposed in the middle region 502 . That is, more or the same number of flow slits 530c than the middle region 502 may be formed in the lower region 503 .

In addition, when the number of louver fins 520c disposed in the lower region 503 is greater than the number of the plurality of louver fins 520b disposed in the middle region 502 , the number of louver fins 520b disposed in the lower region 503 is A pitch interval in the first direction between the plurality of louver pins 520c may be smaller than a pitch interval in the first direction between the plurality of louver pins 520b disposed in the intermediate region 502 . In addition, when the number of louver fins 520c disposed in the lower region 503 is the same as the number of the plurality of louver fins 520b disposed in the middle region 502 , it is disposed in the lower region 503 . A pitch interval in the first direction between the plurality of louver fins 520c may be the same as a pitch interval in the first direction between the plurality of louver fins 520b disposed in the intermediate region 502 .

That is, the fluid provided in the lower region 503 may be bent at an angle smaller than that of the intermediate region 502 and flow. In addition, as the louver fin 520c formed in the lower region 503 is provided with a larger inclination angle than the louver fin 520b formed in the middle region 502 , the flow path of the fluid supplied to the lower region 503 . may be longer than those of the upper region 501 and the middle region 502 .

That is, the cooling unit 200 including the cooling fins 500 according to the embodiment may have an increased flow distance of the fluid, thereby inducing effective heat exchange between the fluid and the cooling fins 500 . In particular, as the inclination angle of the plurality of louver fins 520 is gradually increased from the upper region to the lower region of the cooling unit 200 , it is possible to effectively reduce the flow rate of the fluid flowing into the lower region. Accordingly, the fluid can be sufficiently mixed in the process of flowing the cooling unit 200, and the temperature deviation of the fluid discharged to the edge region and the center region of the cooling unit 200 can be minimized. have. Therefore, it is possible to minimize the temperature deviation of the fluid discharged through the plurality of discharge holes h1, h2, h3, and h4 disposed at different positions, thereby improving the filling efficiency in the cylinder and a knocking phenomenon. can prevent this from happening.

In addition, although not shown in the drawings, the plurality of louver fins 520 disposed in the first to fourth regions A1 , A2 , A3 , and A4 may have a partially different shape. In detail, the first area A1 and the fourth area A4 disposed in the edge area of the cooling unit 200 include the second area A2 disposed in the center area of the cooling unit 200 and It may have a shape different from that of the third area A3 .

For example, the plurality of louver fins 520 disposed in the first area A1 may be inclined at different angles within the range of the first inclination angle θ. In detail, the inclination angle of the plurality of louver fins 520 disposed in the first area A1 may have a maximum inclination angle in an area adjacent to the first side surface S1, and the first inclination angle in the first side surface S1 The inclination angle may decrease toward the second area A2 direction (the second direction (y-axis direction)).

The fourth area A4 may have a shape corresponding to the first area A1 . For example, the plurality of louver fins 520 disposed in the fourth area A4 may be disposed to be inclined at different angles within the range of the first inclination angle θ. In detail, the inclination angles of the plurality of louver fins 520 disposed in the fourth area A4 may have a maximum inclination angle in an area adjacent to the second side surface S2, and the second side surface S2 may have a maximum inclination angle. The inclination angle may decrease in the third area A3 direction (the second direction (y-axis direction)).

The second area A2 and the third area A3 may have shapes corresponding to each other. For example, the plurality of louver fins 520 disposed in each of the second area A2 and the third area A3 may be disposed to be inclined at the same angle within the range of the first inclination angle θ. have. In addition, the inclination angles of the plurality of louver fins 520 disposed in each of the second area A2 and the third area A3 are the louver pins disposed in the first area A1 and the fourth area A4. It may be equal to the minimum inclination angle of 520 .

That is, in the embodiment, the inclination angle of the louver fin 520 disposed in the edge region of the cooling unit 200 of the heat exchanger 1000, which will be described later, is the louver fin 520 disposed in the central region of the cooling unit 200 . can be provided larger than the inclination angle of In addition, the inclination angle of the louver fin 520 may decrease from the edge region of the cooling unit 200 toward the center region. Accordingly, the cooling unit 200 can effectively control the flow rate of the introduced fluid, and in this process, the fluid can be sufficiently mixed in the cooling unit 200 .

Therefore, in the embodiment, the temperature deviation of the fluid discharged to the edge region and the center region of the cooling unit 200 can be minimized, so that the temperature of the fluid discharged through the plurality of discharge holes h1, h2, h3, h4 deviation can be minimized. Due to this, it is possible to improve the filling efficiency in the plurality of cylinders and to prevent a knocking phenomenon from occurring.

5 is a perspective view of another cooling fin according to the embodiment, and FIG. 6 is a cross-sectional view taken along line B-B' of the cooling fin according to FIG. 5 . In the description using FIGS. 5 and 6 , descriptions of the same and similar components as those of the cooling fin 500 described above are omitted, and the same reference numerals are assigned to the same and similar components.

The cooling fin 500 may include an upper region 501 and an intermediate region 502 in which a plurality of louver fins 520 are disposed, respectively, and a lower region 503 in which the louver fins 520 are not disposed. may include In detail, a plurality of louver fins 520a and 520b may be respectively disposed in the upper region 501 and the middle region 502 as shown in FIGS. 1 to 4 . However, in the lower region 503 adjacent to the discharge part 300 , the louver fin 520 may not be disposed and a plurality of through holes 550 may be formed.

The plurality of through holes 550 may be formed on a side surface of the plate 510 . The plurality of through-holes 550 may be disposed to be spaced apart from each other on the side surface of the plate 510 . The plurality of through holes 550 may pass through the side surface of the plate 510 and provide a flow path of the fluid supplied to the lower region 503 . In this case, the planar area of the through hole 550 may be smaller than the planar area of the flow slits 530a and 530b formed in each of the upper region 501 and the middle region 502 .

Accordingly, the lower region 503 may perform a flow disturbance function in the flow path 230 of the cooling unit 200 . Therefore, the fluid provided to the lower region 503 may be mixed with the flow direction and flow velocity disturbed, and in this process, the temperature deviation of the fluid discharged to the edge region and the center region of the cooling unit 200, respectively, is reduced. can be minimized

That is, the cooling fin 500 according to the embodiment may increase the flow distance and flow time of the fluid by the upper region 501 and the middle region 502 including the plurality of louver fins 520 . In this process, effective heat exchange between the fluid and the cooling fin 500 may be induced. In addition, the cooling fin 500 may include a lower region 503 including a plurality of through holes 550 to induce a flow disturbance effect of the fluid.

Accordingly, it is possible to minimize the temperature deviation according to the location of the fluid discharged through the cooling fins 500 . For example, the temperature deviation of the fluid discharged through the plurality of discharge holes h1, h2, h3, and h4 of the discharge unit 300, which will be described later, may be minimized. Accordingly, the charging efficiency of each of the plurality of cylinders connected to the heat exchanger 1000 can be improved and the occurrence of a knocking phenomenon can be prevented.

<Heat Exchanger>

The cooling fin 500 according to the embodiment may be applied to a heat exchanger requiring cooling of a fluid. For example, the heat exchanger according to the embodiment is a water-cooled heat exchanger, wherein the cooling fins 500 are disposed in the heat exchanger 1000 and include a vehicle exhaust gas recirculation (EGR), an intercooler, and an oil cooler (oil). cooler) can be applied. In the following description, an example in which the heat exchanger including the cooling fins 500 is applied to the intercooler will be described.

7 is an exploded perspective view of the heat exchanger according to the embodiment, and FIGS. 8 and 9 are side views of the heat exchanger according to the embodiment. Also, FIG. 10 is a view for explaining a flow flow of a fluid introduced into the heat exchanger according to the embodiment, and FIG. 11 is a front view in which the cooling fins are omitted from the cooling unit of the heat exchanger according to the embodiment. 12 is another side view of the cooling unit according to the embodiment, and FIG. 13 is a view for explaining the flow flow of the cooling water flowing by the cooling water supply unit according to the embodiment.

7 to 13 , the heat exchanger 1000 according to the embodiment may include a material having excellent heat resistance and rigidity. The heat exchanger 1000 may include a material capable of maintaining reliability without being deformed by high-temperature compressed air. For example, the heat exchanger 1000 may include at least one of a resin material and a metal material having excellent heat resistance. In detail, the heat exchanger 1000 is aluminum (Al), copper (Cu), silver (Ag), gold (Au), platinum (Pt), chromium (Cr), nickel (Ni), molybdenum (Mo), titanium It may be provided as a metal material of at least one of (Ti), tin (Sn), tungsten (W), iron (Fe), stainless steel (SUS), and alloys thereof.

The heat exchanger 1000 may include an inlet unit 100 , a cooling unit 200 , an outlet unit 300 , and a cooling water supply unit 400 .

The inlet 100 may include an accommodating space therein, an inlet 110 may be formed in the upper portion, and an open open area in the lower portion. The inlet 100 may receive a fluid from the outside of the heat exchanger 1000 through the inlet 110 . For example, the inlet 110 may be connected to a supercharger (not shown). The high-temperature compressed air formed by the supercharger may be provided into the heat exchanger 1000 through the inlet 110 . The open lower region of the inlet 100 may have a different planar area than the inlet 110 . For example, a planar area of the lower region of the inlet 100 may be greater than a planar area of the inlet 110 .

The cooling unit 200 may be connected to the inlet unit 100 . The cooling unit 200 may cool the fluid introduced through the inlet unit 100 .

To this end, the cooling unit 200 includes a body 210 having an accommodating space therein, and upper and lower portions of the body 210 may be opened. The open upper area of the body 210 may be connected to the open lower area of the inlet 100 . The cooling unit 200 may receive the fluid introduced into the inlet 100 through the open upper region of the body 210 . The open upper area of the body 210 may have a shape corresponding to the open lower area of the inlet 100 . Also, the open upper region of the body 210 may have a size corresponding to the lower region of the inlet 100 . Accordingly, when the fluid is supplied from the inlet 100 to the cooling unit 200 , it is possible to prevent a decrease in the flow of the fluid, so that the fluid can be effectively provided to the cooling unit 200 . .

In addition, the open lower region of the body 210 may have a shape and size corresponding to the open upper region of the body 210 . For example, the lower region of the body 210 may have the same shape and the same planar area as the upper region of the body 210 in consideration of the arrangement of the cooling fins 500 described above.

The cooling unit 200 may include a plurality of partition walls 220 . The plurality of partition walls 220 may have a shape extending in a horizontal direction within the accommodation space of the body 210 . For example, the plurality of partition walls 220 may be in direct contact with two inner surfaces of the accommodation space of the body 210 facing in the first direction and extend in a horizontal direction. The plurality of partition walls 220 may extend from an upper region of the cooling unit 200 to a lower region.

The plurality of partition walls 220 may be spaced apart from each other in the accommodation space of the body 210 . In detail, the plurality of partition walls 220 may be spaced apart from each other in a third direction (z-axis direction) in the accommodation space. The plurality of partition walls 220 may be spaced apart from each other at equal intervals within the body 210 .

The cooling unit 200 may include a plurality of flow paths 230 . In detail, the cooling unit 200 may include a plurality of flow paths 230 formed by the plurality of partition walls 220 in the receiving space of the body 210 . That is, the flow path 230 is a space between the plurality of partition walls 220 spaced apart from each other, and may have a shape extending from the upper region to the lower region of the cooling unit 200 .

The plurality of flow paths 230 may be spaced apart from each other. For example, the plurality of flow paths 230 may be spaced apart from each other in a third direction (z-axis direction). Accordingly, a flow path 230 having a multi-layer structure spaced apart from each other by the plurality of partition walls 220 may be formed in the receiving space of the body 210 . That is, the fluid introduced into the cooling unit 200 may be effectively dispersed and supplied from the first flow path located at the lowest end to the nth flow path located at the uppermost end with respect to the third direction (z-axis direction), and each It may be cooled in the process of flowing through the flow path 230 .

The plurality of flow paths 230 may have a set shape. For example, the vertical cross-sectional shape of the plurality of flow paths 230 may have a polygonal shape. For example, the vertical cross-sectional shape of the plurality of flow paths 230 may be a quadrangle as shown in FIG. 10 . The plurality of flow paths 230 may have the same shape and may be provided on the same plane.

The cooling unit 200 may include the above-described cooling fins 500 . The cooling fins 500 may be disposed on the partition wall 220 . The cooling fin 500 may be disposed between two adjacent partition walls 220 . The cooling fins 500 may be disposed in the flow path 230 . The cooling fins 500 are provided in plurality to correspond to the flow paths 230 formed in the accommodation space, and may be disposed in each of the plurality of flow paths 230 . That is, the cooling fins 500 are provided in the same number as the flow paths 230 and may be matched one-to-one.

The cooling fin 500 may have a shape corresponding to the flow path 230 . For example, the cooling fins 500 may have a shape extending in a horizontal direction. That is, the cooling fins 500 may extend from the upper region of the cooling unit 200 to the lower region.

In addition, the cooling fin 500 may have a set size. For example, the length of the cooling fins 500 in the first direction (x-axis direction) may be less than or equal to the length of the flow path 230 in the first direction. In addition, the length of the cooling fin 500 in the second direction (y-axis direction) may be less than or equal to the length of the flow path 230 in the second direction. For example, the plurality of cooling fins 500 may have sizes (lengths in the first and second directions) corresponding to the flow path 230 in which each cooling fin 500 is disposed. In this case, the high-temperature fluid supplied to the plurality of flow paths 230 can be effectively cooled while passing through the cooling fins 500 having a size corresponding to the flow path 230 . In addition, the cooling fin 500 may have a shape of a set pattern.

The discharge unit 300 may be connected to the cooling unit 200 . The discharge unit 300 may be a region through which the fluid flowing through the cooling unit 200 is discharged. The discharge unit 300 may discharge the cooled fluid by flowing through the cooling unit 200 to the outside of the heat exchanger 1000 .

To this end, the discharge unit 300 may include at least one discharge hole (h). The discharge hole h may be a through hole penetrating the upper region facing the cooling unit 200 and the other lower region. The discharge hole h may be provided in a number corresponding to the number of cylinders (not shown) of the engine (not shown). For example, when the engine is a four-cylinder engine including four cylinders, the discharge unit 300 has four discharge holes (h) spaced apart from each other, for example, a first discharge hole (h1), a second discharge hole ( h2), a third discharge hole h3 and a fourth discharge hole h4 may be included. That is, as shown in FIG. 10 , the high-temperature fluid introduced through the inlet 100 may be cooled while passing through the cooling unit 200 , and a plurality of discharge holes h formed in the discharge unit 300 . ) through the discharge hole (h) and may be provided in each cylinder to be connected.

The cooling water supply unit 400 may be disposed on one side of the cooling unit 200 . The cooling water supply unit 400 may be connected to one side of the cooling unit 200 .

The cooling water supply unit 400 may include a cooling water inlet 410 and a cooling water outlet 420 . The cooling water introduced through the cooling water inlet 410 may be provided to the cooling unit 200 . Also, the cooling water flowing through the cooling unit 200 may be discharged through the cooling water outlet 420 . The discharged cooling water may flow through a separate line, and may be provided again to the cooling water inlet 410 after flowing through a predetermined path.

The cooling water introduced through the cooling water inlet 410 may be supplied to the cooling unit 200 through a plurality of first holes 415 formed at one side of the cooling unit 200 . The plurality of first holes 415 may be spaced apart from each other at one side of the cooling unit 200 . For example, the plurality of first holes 415 may be spaced apart from one side of the cooling unit 200 in a third direction (z-axis direction). In detail, the plurality of first holes 415 may be disposed in a region overlapping the plurality of partition walls 220 in the horizontal direction (y-axis direction). The plurality of first holes 415 may be provided in the same number as the plurality of partition walls 220 and may be matched one-to-one.

Also, the cooling water supplied to the cooling unit 200 may be discharged from the cooling unit 200 through a plurality of second holes 425 formed at one side of the cooling unit 200 . The plurality of second holes 425 may be spaced apart from the plurality of first holes 415 . For example, the plurality of second holes 425 may be spaced apart from the first holes 415 in a first direction (x-axis direction). Also, the plurality of second holes 425 may be spaced apart from each other in a third direction (z-axis direction) from one side of the cooling unit 200 . In detail, the plurality of second holes 425 may be disposed in a region overlapping the plurality of partition walls 220 in the horizontal direction (y-axis direction). Also, the plurality of second holes 425 may be disposed in a region overlapping the plurality of first holes 415 in the horizontal direction (x-axis direction). The plurality of second holes 425 may be provided in the same number as the plurality of partition walls 220 and the plurality of first holes 415 and may be matched one-to-one.

The coolant supplied through the plurality of first holes 415 may flow through the coolant flow path 230 formed in the partition wall 220 . In detail, the coolant flow path 230 may include a first flow path connected to the first hole 415 and a second flow path connected to the second hole 425 .

Each of the first and second flow paths may extend from one side of the cooling unit 200 to the other side. In detail, the first and second flow paths may have a shape extending in the second direction (y-axis direction).

Also, the coolant flow path 230 may include a partition wall 435 disposed between the first and second flow paths. The separation wall 435 includes an opening connecting the first and second flow paths, and the fluid may move through the opening. In this case, the opening may be disposed closer to the other side than to one side of the cooling unit 200 . In detail, the opening is at one side of the cooling unit 200 in which the first hole 415 and the second hole 425 are formed in order to secure a residence time and a flow distance of the coolant supplied into the partition wall 220 . It can be adjacent to the other side opposite to

That is, the coolant supplied through the coolant inlet 410 may be supplied to the coolant flow path 230 formed in each of the plurality of partition walls 220 through the plurality of first holes 415 . Afterwards, the supplied cooling water may flow through a first flow path formed in each of the plurality of partition walls 220 , and may be provided to the second flow path through the opening. Then, the cooling water may flow through the second flow path, discharged from the cooling water flow path 230 through the second hole 425 , and discharged from the cooling water supply unit 400 through the cooling water outlet 420 . can

Accordingly, the high-temperature fluid supplied to the cooling unit 200 is effectively absorbed by the cooling water flowing inside each of the plurality of partition walls 220 while flowing from the upper region to the lower region of the cooling unit 200 . can be cooled. Accordingly, the heat exchanger 1000 according to the embodiment has a relatively low temperature in the plurality of holes h formed in the discharge unit 300 to provide a fluid containing oxygen having a higher density.

In addition, as the cooling fins 500 included in the cooling unit 200 have the above-described shape, the temperature deviation of the fluid discharged through the discharge unit 300 may be minimized. In detail, the flow direction of the fluid may be changed at least 5 times by the plurality of louver fins 520 formed on the cooling fin 500 , and may have an increased flow distance and flow time. Accordingly, the fluid may be sufficiently mixed in the heat exchanger 1000 , respectively, through the first to fourth discharge holes h1 , h2 , h3 and h4 formed in the discharge unit 300 , respectively. The temperature deviation of the discharged fluid may have little difference or a minimum temperature deviation within a set range. Accordingly, the heat exchanger 1000 can improve filling efficiency in each connected cylinder and prevent a knocking phenomenon from occurring.

Features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiment has been described above, it is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

heat exchanger: 1000
Inlet: 100 Cooling: 200
Discharge part: 300 Cooling water supply part: 400
Cooling Fins: 500 Plates: 510
Louver pin: 520 Floating slit: 530

Claims (7)

delete delete delete delete an inlet through which a fluid is introduced;
a discharge unit through which the fluid is discharged; and
A cooling unit disposed between the inlet and the outlet and cooling the fluid;
The cooling unit,
a body having an accommodating space;
a plurality of partition walls disposed in the receiving space of the body;
a plurality of flow paths formed by the plurality of partition walls; and
A plurality of cooling fins disposed in each of the plurality of flow paths,
The flow direction of the fluid introduced into the cooling unit is changed by the cooling fins,
The discharge unit includes first to fourth discharge holes spaced apart from each other,
The cooling fins include first to fourth regions disposed in regions corresponding to the first to fourth discharge holes, respectively, in the first direction,
The first region is disposed in an edge region of the cooling unit adjacent to the first side surface of the cooling unit,
The fourth region is disposed in an edge region of the cooling unit adjacent to a second side surface of the cooling unit opposite to the first side surface,
The second and third regions are arranged between the first and fourth regions and are arranged in a central region of the cooling unit, the second region is arranged adjacent to the first region, and the third region is the disposed adjacent to the fourth region,
The inclination angle of the plurality of louver fins disposed in the first region decreases toward the second region,
The inclination angle of the plurality of louver fins disposed in the fourth region decreases toward the third region, a water-cooled heat exchanger. 6. The method of claim 5,
The louver fins respectively disposed in the first to fourth regions have shapes corresponding to each other. delete

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