HEAT EXCHANGER

Abstract

The present invention relates to a heat exchanger in which, in order to cool a vehicle engine or motor and to cool air conditioning refrigerant, a plurality of radiators and condensers are integrally configured. By the present invention, through a structure of a header tank, which overcomes the limitation to the degree of freedom in design, the limitation being caused by the aluminum material from which a heat exchanging part and the header tank are made, interference of an inlet-outlet port configured at a header tank can be avoided.

Description

TECHNICAL FIELD

The present disclosure relates to an aluminum heat exchanger in which a plurality of radiators and condensers are integrally configured for cooling a vehicle engine or motor, cooling an air conditioner refrigerant, etc.

BACKGROUND ART

In general, electric vehicles and hybrid electric vehicles require a plurality of radiators and condensers to cool motors, engines, and electrical components. When the plurality of radiators and condensers separately are manufactured and installed, not only productivity is low due to the large number of manufacturing processes, but also an cost increases due to significant waste of materials and it is difficult to secure a space in which each of heat exchangers is mounted.

To solve this, the radiator and the condenser are configured to be stacked side by side at a predetermined distance, but a separate structure for fixing the radiator and the condenser is still required, and the radiator or condenser disposed at the rear has a problem of poor cooling performance.

As shown in FIG. 1, in the case where a radiator 10 and a condenser 20 are configured in a plurality of rows and a header tank 30 is configured, when a height of the header tank 30 is formed to be the same at the time of designing each of fluid inlet and outlet 31 and 32 of the radiator 10 and the condenser 20, there is a problem that interference between the fluid inlet and outlet 31 and 32 occurs.

In addition, since the radiator 10 and the condenser 20 are made of aluminum, the degree of freedom in design is limited due to a method of preparing aluminum, making it difficult to design the fluid inlet and outlet while forming the height of the header tank 30 to be the same.

As a related art, Korean Patent No. 10-2205847 (2021.01.15) is disclosed.

DISCLOSURE

Technical Problem

The present disclosure is directed to providing a heat exchanger having a header tank structure in which a radiator and a condenser are configured in an aluminum integrated form and a fluid inlet and outlet of the radiator and the condenser do not interfere.

Technical Solution

According to the present disclosure, there may be provided a heat exchanger, wherein a plurality of tubes are disposed in two columns front and back and after to form a tube column, and a tube column of the front, which is an introduction direction of cooling air, is formed as a front core, and a tube column of the back, which is a discharge direction of the cooling air, is formed as a back core, an upper portion of the front core forms a first heat exchanging part in which a heat exchanger medium circulates, a lower portion of the front core forms a second heat exchanging part in which the heat exchange medium circulates, and the back core forms a third heat exchanging part in which the heat exchange medium circulates, a first header tank is connected to both ends of the first heat exchanging part, a second header tank is connected to both ends of the second heat exchanging part, and a third header tank is connected to both ends of the third heat exchanging part, and in the first header tank, the second header tank, and the third header tank, one side of the first header tank is formed to have a larger length protruding from a heat exchanger in a longitudinal direction than the third header tank.

Advantageous Effects

The heat exchanger according to the present disclosure can avoid the interference of the inlet and outlet ports configured on the header tank through the structure of the header tank that overcomes the limitation of the degree of freedom in design that is caused by forming the heat exchanging part and the header tank that are made of aluminum.

In addition, through such a structure, both the inlet and outlet ports may be disposed on the header tank rearward from the heat exchanging part, thereby reducing the lengths of the hoses connected to the inlet and outlet ports and avoiding the interference with other components.

In addition, by reducing the length of the hose, it is possible to reduce the weight of the vehicle cooling/cooling system and prevent misassembly due to unidirectionality in which the inlet and outlet ports face rearward.

In addition, by constituting the integrated heat exchanger in which the plurality of heat exchangers are coupled to one, it is possible to reduce the entire package, thereby increasing the degree of space utilization.

In addition, by using all components made of aluminum to be integrally brazed, it is possible to reduce the number of assembly processes.

DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of the conventional heat exchanger.

FIG. 2 is a perspective view of a heat exchanger according to one embodiment of the present disclosure as viewed from the rear.

FIG. 3 is a perspective view of the heat exchanger according to one embodiment of the present disclosure as viewed from the front.

FIG. 4 is a view of the heat exchanger according to one embodiment of the present disclosure as viewed from the top.

FIG. 5 is a perspective view of a heat exchanger according to another embodiment of the present disclosure as viewed from the rear.

FIG. 6 is a perspective view of the heat exchanger according to another embodiment of the present disclosure as viewed from the front.

FIG. 7 is an enlarged view showing a header tank disposed at the other side in the heat exchanger according to another embodiment of the present disclosure.

FIG. 8 is a view of the heat exchanger according to another embodiment of the present disclosure as viewed from the top.

DESCRIPTION OF REFERENCE NUMERALS

100: heat exchanging part
110: first heat exchanging part  120: third heat exchanging part
130: second heat exchanging part
200: header tank
210: first header tank           220: third header tank
230: second header tank
240: inlet and outlet port
241: first header tank outlet port 242: first header tank inlet port
243: third header tank outlet port 244: third header tank inlet port
245: second header tank outlet port 246: second header tank inlet port
250: avoidance part

MODE FOR INVENTION

To fully understand the present disclosure, exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings. Embodiments of the present disclosure may be modified in various forms, and the scope of the present disclosure should not be construed as being limited to the following embodiments described in detail. The embodiments are provided to more completely describe the present disclosure to those skilled in the art. Therefore, shapes, etc. of components in the drawings may be exaggeratively shown to emphasize a clearer description. It should be noted that the same members in each drawing may be denoted by the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the gist of the present disclosure will be omitted.

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

The heat exchanger according to embodiments of the present disclosure includes a heat exchanging part 100 composed of a first heat exchanging part 110, a second heat exchanging part 130, and a third heat exchanging part 120, and a header tank 200 composed of a first header tank 210, a second header tank 230, and a third header tank 220.

In the heat exchanging part 100, a plurality of tubes are disposed in two columns front and back to form a tube column, and the tube column has the front, which is an inlet direction of cooling air, formed as a front core FC, and the back, which is an outlet direction of the cooling air, formed as a back core BC.

In this case, an upper portion of the front core FC forms the first heat exchanging part 110 in which a heat exchange medium circulates, a lower portion of the front core FC forms the second heat exchanging part 130 in which the heat exchange medium circulates, and the back core BC forms the third heat exchanging part 120 in which the heat exchange medium circulates.

The first heat exchanging part 110 is connected to electrical components that generate heat, such as a vehicle motor or inverter, to cool the heat exchange medium circulating therein. The first heat exchanging part 110 may be configured as a low-temperature radiator.

The third heat exchanging part 120 is connected to a vehicle engine or battery to cool the heat exchange medium, such as cooling water, circulating therein.

Generally, a condenser exchanges heat as a heat exchange medium flows through a condensation area of the condenser. The heat exchange medium exchanges heat in a subcool area after undergoing a receiver dryer (gas-liquid separator). The third heat exchanging part 120 may be a heat exchanging part corresponding to the condensation area.

The second heat exchanging part 130 is connected to a vehicle air conditioning system to cool and condense a gaseous heat exchange medium while circulating the heat exchange medium, thereby converting the gaseous heat exchange medium into a liquid heat exchange medium. The second heat exchanging part 130 may be configured as a condenser and configured as a heat exchanging part responsible for the above-described subcool area.

The heat exchanging part 100 may be configured by stacking the first heat exchanging part 110, the third heat exchanging part 120, and the second heat exchanging part 130 in vertical and front-rear directions.

Referring to FIG. 2, the front of the heat exchanging part 100 faces a direction in which cooling air is introduced. The rear of the heat exchanging part 100 faces a direction in which cooling air is discharged.

A flow direction of the cooling air flowing into and discharged from the heat exchanging part 100 is a width direction of the heat exchanging part 100, a gravity direction is a height direction, and the remaining direction is a longitudinal direction. That is, in FIG. 2, based on viewing the rear of the heat exchanging part 100, a length is formed in a transverse direction, a height is formed in a vertical direction, and a width is formed in a width direction. (A height, a width, and a length are shown in spatial coordinates in FIG. 2, which is applied to the following description and all drawings in the same manner. In addition, a direction in which cooling air is introduced is the front, and a direction in which the cooling air is discharged is the rear in the heat exchanging part 100. The same applies below).

In the heat exchanging part 100, the first heat exchanging part 110 and the second heat exchanging part 130 may be stacked vertically and disposed at the front into which cooling air flows. In this case, with regard to locations of the first heat exchanging part 110 and the second heat exchanging part 130, as shown in FIG. 3, the first heat exchanging part 110 may be disposed at an upper side, the second heat exchanging part 130 may be disposed at a lower side, and vice versa.

In addition, the second heat exchanging part 130 configured at the front may form a refrigerant subcool area in which subcool of the heat exchange medium occurs.

The third heat exchanging part 120 or the second heat exchanging part 130 may be disposed at the rear of the heat exchanging part 100.

The heat exchanging part 100 has a structure in which the first heat exchanging part 110 and the second heat exchanging part 130 are disposed by being stacked vertically at the front and the third heat exchanging part 120 is disposed at the rear.

That is, in the heat exchanging part 100 in which the tube column is disposed in two columns front and back and stacked as the front core FC and the back core BC at the front and rear, an upper portion of the front core FC forms the first heat exchanging part 110, the lower portion of the front core FC forms the second heat exchanging part 130, and the back core BC forms the third heat exchanging part 120.

Cooling air flows into the front at which the first heat exchanging part 110 and the second heat exchanging part 130 are disposed and discharged to the rear at which the third heat exchanging part 120 is disposed.

The vertical and front-rear stacking structure of the heat exchanging part 100 is commonly applied to embodiments to be described below.

Referring to FIGS. 2 to 4, in the heat exchanger according to one embodiment of the present disclosure, the heat exchanging part 100 has one side and the other side that are coupled to the header tank 200 in a longitudinal direction of the heat exchanging part 100.

The header tank 200 forms a space in which the heat exchange medium is stored and flows therein. The header tank 200 is connected to the heat exchanging part 100 to circulate the heat exchange medium in the heat exchanging part 100.

The header tank 200 may include the first header tank 210 connected to the first heat exchanging part 110, the third header tank 220 connected to the third heat exchanging part 120, and the second header tank 230 connected to the second heat exchanging part 130.

A pair of the first header tank 210, the third header tank 220, and the second header tank 230 are formed at one side and the other side of the heat exchanging part 100.

That is, the first header tank 210, the second header tank 220, and the third header tank 230, which correspond to the first heat exchanging part 110, the second heat exchanging part 130, and the third heat exchanging part 120, may be configured on the first heat exchanging part 110, the third heat exchanging part 120, and the second heat exchanging part 130 so that the heat exchange medium may flow separately.

In addition, an inlet and outlet port 240 for introduction and discharge of the heat exchange medium are formed on each of the first header tank 210, third header tank 220, and second header tank 230.

In addition, each inlet and outlet port 240 is formed at the rear of the header tank 200 in a discharge direction of cooling air. That is, the inlet and outlet port 240 may be formed rearward from the vehicle in which an engine, a battery, or electrical components are disposed.

The first header tank 210, the third header tank 220, and the second header tank 230 that are coupled to one side and the other side of the heat exchanging part 100 are formed in an asymmetric shape.

In the pair of the first header tank 210, the third header tank 220, and the second header tank 230, the header tanks coupled to one side and the header tanks coupled to the other side of the heat exchanging part 100 are each formed in an asymmetric shape.

Referring to FIG. 2, the third header tank 220 is coupled to a rear one side of the heat exchanging part 100 in the height direction of the heat exchanging part 100. The third header tank 220 is also coupled to a rear other side in the height direction of the heat exchanging part 100.

In addition, the third header tank outlet port 243 is formed on an upper portion of the third header tank 220 at the rear one side of the heat exchanging part 100, and the third header tank inlet port 244 is formed on a lower portion of the third header tank 220 at the rear other side of the heat exchanging part 100.

In this case, referring to FIG. 3, the first header tank 210 is installed to be arranged in front of the third header tank 220 at the rear other side of the heat exchanging part 100, and as shown in FIG. 2, the first header tank 210 is formed to be longer than the third header tank 220 in the longitudinal direction and formed to be shorter than the third header tank 220 in the height direction at the rear other side of the heat exchanging part 100. When viewed from the front of the heat exchanging part 100, a portion of the third header tank 220 at the other side of the heat exchanging part 100 is not visible because it is covered by the first header tank 210. In addition, the first header tank 210 is also installed at the one side of the heat exchanging part 100, and in this case, formed to be shorter than the third header tank 220 in the height direction and equal to the same in the longitudinal direction at the one side of the heat exchanging part 100.

As described above, the first header tank 210 is formed in an asymmetric shape at the one side and the other side of the heat exchanging part 100, and the third header tank 220 is also formed in an asymmetric shape at the one side and the other side of the heat exchanging part 100. In addition, the first header tank 210 and the third header tank 220 that are coupled to the one side of the heat exchanging part 100 are formed differently in the height direction, and the first header tank 210 and the third header tank 220 that are coupled to the other side of the heat exchanging part 100 are formed differently in the height direction and the longitudinal direction.

Referring to FIGS. 2 and 3 together, the inlet and outlet port 240 is disposed on each tank to prevent the interference between the inlet and outlet ports. In FIG. 2, the third header tank outlet port 243 is formed at an upper side of the third header tank 220 of the rear one side of the heat exchanger 100. The third header tank inlet port 244 is formed at a lower side of the third header tank 220 of the rear other side of the heat exchanging part 100.

In this case, in the first header tank 210, the first header tank outlet port 241 is formed at the upper side of the rear other side of the heat exchanging part 100, and the first header tank inlet port 242 is formed at the lower side thereof.

The first header tank outlet port 241 and the inlet port 242 are formed on the first header tank 210 formed to protrude longer than the third header tank 220 in the longitudinal direction. Since the first header tank inlet and outlet ports 241 and 242 are formed to extend from locations at which they protrude further in the longitudinal direction than the third header tank 220 of the first heater tank 210 rearward from the heat exchanging part 100, the third header tank 220 does not interfere with the third header tank inlet and outlet ports 243 and 244.

In addition, the second header tank 230 may be installed at one side and the other side of the heat exchanging part 100 at the front of the heat exchanging part 100 and disposed under the first header tank 210 to be shorter than the first header tank 210 in the height direction to prevent interference with the first header tank 210. The first header tank 210 may be formed to have a shorter length than the first header tank 210 in the longitudinal direction, which helps avoid the interference with the second header tank 230.

The second header tank outlet port 245 and the second header tank inlet port 246 are formed on the second header tank 230 mounted at the one side of the heat exchanging part 100. The second header tank inlet and outlet ports 245 and 246 may also be formed rearward from the heat exchanging part 100 or in a lateral direction of the heat exchanging part 100.

FIG. 4 shows that a direction in which the cooling air flows into the heat exchanging part 100 refers to the front of the heat exchanging part 100 and a direction in which the cooling air is discharged from the heat exchanging part 100 refers to the rear thereof. It can be seen that the inlet and outlet port 240 of the header tank 200 is formed rearward from the heat exchanging part 100.

The above structure of the header tank 200 prevents interference between the inlet and outlet ports even when the inlet and outlet port 240 faces rearward.

In addition, the first header tank 210 (left side based on FIG. 4) connected to the one side of the heat exchanging part 100 is formed to protrude longer than the third header tank 220 in the longitudinal direction. This can prevent a foreign substance introduced from a front opening of the vehicle from flowing into the heat exchanger. It is possible to prevent the heat exchanging part from being contaminated and corroded by an external substance. The inlet and outlet ports that connect pipes and heat exchangers are particularly vulnerable to the external substance. By constituting the length of the first header tank 210 disposed at the front to be the greatest, the inlet and outlet ports located at the rear can be blocked from contaminants.

Referring to FIGS. 5 to 8, the heat exchanger according to another embodiment of the present disclosure has a difference in the structure of the header tank 200 from the above one embodiment, and the above descriptions are applied to parts that are not described again in the same manner.

The first header tank 210, the third header tank 220, and the second header tank 230 that are coupled to the one side and the other side of the heat exchanging part 100 are formed in an asymmetric shape. In this case, an avoidance part 250 that is concave or convex in the longitudinal direction is formed in the third header tank 220.

In FIG. 5, the third header tank 220 is installed at the rear other side the heat exchanging part 100, and the first header tank 210 is installed at the front other side of the heat exchanging part 100. In this case, the avoidance part 250 that is concave in the longitudinal direction is formed in the third header tank 220. The first header tank inlet port 242 and outlet port 241 do not interfere with the third header tank 220 due to the avoidance part 250.

The avoidance part 250 is formed to be concave in the longitudinal direction so that the first header tank 210 or the third header tank 220 is exposed.

In FIGS. 5 and 7, the avoidance part 250 whose upper and middle sides are concave is formed in the third header tank 220 installed on the rear other side of the heat exchanging part 100. In addition, the first header tank 210 installed at the front other side of the heat exchanging part 100 is exposed to the avoidance part 250 rearward.

The first header tank outlet port 241 and the first header tank inlet port 242 are formed on the first header tank 210 exposed by the avoidance part 250. The first header tank outlet port 241 is formed at the upper side of the first header tank 210, and the first header tank inlet port 242 is formed at the middle side thereof.

Therefore, the first header tank inlet and outlet ports 241 and 242 may be formed rearward from the heat exchanging part 100 without being interfered with by the third header tank 220.

In addition, as shown in FIG. 5, the third header tank outlet port 243 and the third header tank inlet port 244 avoid the concave avoidance part 250 of the third header tank 220, and the third header tank outlet port 243 may be formed at the middle side of the third header tank 220, and the third header tank inlet port 244 may be formed at the lower side thereof.

In addition, referring to FIG. 6 together, the second header tank 230 may be installed at one side and the other side of the heat exchanger 100 at the front of the heat exchanger 100 and formed at a location at which the avoidance part 250 is formed at the front other side of the heat exchanging part 100 to prevent the interference with the first header tank 210, which may allow the first header tank 210 to avoid the interference with the second header tank 230. The first header tank 210 may be formed to be lower in the height direction by the avoidance part 250, and the second header tank outlet port 245 and the second header tank inlet 246 of the second header tank 230 are located at this location.

The second header tank outlet port 245 and the second header tank inlet port 246 are formed on the second header tank 230 mounted at the one side of the heat exchanging part 100. The second header tank inlet and outlet ports 245 and 246 may also be formed rearward from the heat exchanging part 100 or in a lateral direction of the heat exchanging part 100.

FIG. 8 shows that a direction in which the cooling air flows into the heat exchanging part 100 refers to the front of the heat exchanging part 100 and a direction in which the cooling air is discharged from the heat exchanging part 100 refers to the rear thereof. It can be seen that the inlet and outlet port 240 of the header tank 200 is formed rearward from the heat exchanging part 100.

The above structure of the header tank 200 prevents interference between the inlet and outlet ports even when the inlet and outlet port 240 faces rearward.

So far, a case where the third heat exchanging part 120 is disposed at the rear of the heat exchanging part 100, and the first heat exchanging part 110 and the third heat exchanging part 120 are disposed by being stacked respectively at the upper side and the lower side of the heat exchanging part 100 at the front of the heat exchanging part 100 has been described. This may be applied to a case where the third heat exchanging part 120 is disposed at the rear of the heat exchanging part 100.

The heat exchanging part 100 and the header tank 200 may be made of an aluminum material. Aluminum is prepared by casting and has a limitation in the degree of freedom in design compared to plastics prepared by injection. Therefore, it is possible to avoid the interference with the inlet and outlet port 240 formed on the header tank 200 through the structure of the header tank 200 as in the above-described embodiments.

In addition, the front and back cores FC and BC, the first to third heat exchanging parts 110 to 130, and the first to third header tanks 210 to 230 are made of an aluminum material and bonded by brazing.

Through such a structure, the inlet and outlet port 240 may be disposed on the header tank 200 rearward from the heat exchanging part 100, thereby reducing the length of the hose connected to the inlet and outlet port 240 and avoiding the interference with other components.

In addition, by reducing the length of the hose, it is possible to reduce the weight of the vehicle cooling/cooling system and prevent misassembly due to unidirectionality in which the inlet and outlet port 240 faces rearward.

The front core FC and the back core BC may be disposed to have different configurations.

In the front core FC, the upper first heat exchanging part 110 may be configured as a low-temperature radiator, and the lower second heat exchanging part 130 may be configured as a condenser having a subcool area. In this case, the third heat exchanging part 120 of the back core BC may be configured as a high-temperature radiator or a condenser having a condensation area.

Here, when the back core BC is configured as the condenser having the condensation area, the heat exchanger according to the present disclosure further includes a separate receiver dryer (gas-liquid separator). In this case, the heat exchange medium flows to the receiver dryer through the condenser having the condensation area.

In addition, here, when the back core BC is configured as the high-temperature radiator, the condenser having the subcool area constituting the lower portion of the front core FC may be connected to a separate sub heat exchanger including the condenser having the condensation area and the receiver dryer through the second header tank inlet and outlet ports 245 and 246.

The above-described embodiments of the present disclosure are merely illustrative, and those skilled in the art to which the present disclosure pertains will be able to well understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, it will be able to understand that the present disclosure is not limited to the forms described in the above detailed description. Therefore, the true technical scope of the present disclosure should be determined by the technical spirit of the appended claims. In addition, it should be understood that the present disclosure includes all modifications, equivalents, and substitutes within the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A heat exchanger, wherein a plurality of tubes are disposed in two columns front and back and after to form a tube column, and a tube column of the front, which is an introduction direction of cooling air, is formed as a front core, and a tube column of the back, which is a discharge direction of the cooling air, is formed as a back core,an upper portion of the front core forms a first heat exchanging part in which a heat exchanger medium circulates, a lower portion of the front core forms a second heat exchanging part in which the heat exchange medium circulates, and the back core forms a third heat exchanging part in which the heat exchange medium circulates,a first header tank is connected to both ends of the first heat exchanging part, a second header tank is connected to both ends of the second heat exchanging part, and a third header tank is connected to both ends of the third heat exchanging part, andin the first header tank, the second header tank, and the third header tank, one side of the first header tank is formed to have a larger length protruding from a heat exchanger in a longitudinal direction than the third header tank.

2. The heat exchanger of claim 1, wherein the first header tank, the second header tank, and the third header tank each has inlet and outlet ports for introduction and discharge of the heat exchange medium, an outlet port and an inlet port of the first header tank are formed on the first header tank connected to one end of the first heat exchanging part, and an outlet port and an inlet port of the third header tank are each formed on the third header tank connected to both ends of the third heat exchanging part, and the first header tank inlet and outlet ports and the third header tank inlet and outlet ports extend rearward.

3. The heat exchanger of claim 2, wherein the first header tank outlet port is disposed at an upper side of the first header tank connected to one end of the first heat exchanging part, and the first header tank inlet port is disposed at a lower side of the first header tank connected to the one end of the first heat exchanging part.

4. The heat exchanger of claim 2, wherein among the third header tanks connected to both ends of the third heat exchanging part, the third header tank outlet port is disposed at an upper side of the third header tank connected to one end of the third heat exchanging part, and the third header tank inlet port is disposed at a lower side of the third header tank connected to the other end of the third heat exchanging part.

5. The heat exchanger of claim 2, wherein in the second header tank connected to one end of the second heat exchanging part, the second header tank outlet port and inlet port are disposed on a lower portion thereof and are open in the longitudinal direction.

6. The heat exchanger of claim 2, wherein an avoidance part that is concave in the longitudinal direction is formed in the third header tank.

7. The heat exchanger of claim 6, wherein the first header tank inlet port and outlet port are not interfered with the third header tank by the avoidance part.

8. The heat exchanger of claim 1, wherein the front and back cores, the first to third heat exchanging parts, and the first to third header tanks are made of an aluminum material and bonded by brazing.

9. The heat exchanger of claim 2, wherein the front core has an upper portion configured as a low-temperature radiator and a lower portion configured as a condenser having a subcool area, and the back core is configured as a high-temperature radiator.

10. The heat exchanger of claim 9, wherein the condenser having the subcool area constituting the lower portion of the front core is connected to a separate sub heat exchanger including a condenser having a condensation area and a receiver dryer.

11. The heat exchanger of claim 1, wherein the front core has an upper portion configured as a low-temperature radiator and a lower portion configured as a condenser having a subcool area, and the back core is configured as a condenser having a condensation area.

12. The heat exchanger of claim 11, further comprising the condenser having the condensation area, which constitutes the back core, and the condenser having the subcool area and the receiver dryer, which constitute the lower portion of the front core.