KR20080093247A - Heat exchanger - Google Patents

Abstract

A heat exchanger is provided to increase the size of the heat exchanger by arranging an inlet and an outlet in an air introducing direction of a header tank. A heat exchanger includes a plurality of tubes(10), upper and lower headers(30,30'), upper and lower tanks(40'), and upper and lower header tanks(60). A first baffle(45) is provided in first and second columns(41,42) to partition an internal space of the upper tank. A first communicating unit(51) includes an inlet pipe(43) and outlet pipe(44). The inlet pipe is provided at one side of the second column. The outlet pipe is used to discharge a refrigerant. The first communicating unit connects the first column with the second column on a rear separator(50) of the inlet pipe. A second baffle(47) is provided between the inlet pipe and the outlet pipe. A second communicating unit(48) connects the first column with the second column on the separator provided at the other side of the upper tank.

Description

Heat Exchanger

1 is a perspective view showing a conventional general heat exchanger.

2 is a view showing a schematic structure of a conventional heat exchanger.

3 and 4 show examples in which the heat exchanger is used as an evaporator.

Figure 6 is a view showing an example for reducing the size of the heat exchanger as a conventional heat exchanger.

7 is a perspective view of a heat exchanger according to the present invention.

8 is an exploded perspective view of a header tank of a heat exchanger according to the present invention;

9 is a perspective view showing the fluid flow of the heat exchanger according to the present invention.

10 is an exploded perspective view showing another embodiment of the heat exchanger according to the present invention.

11 is a perspective view showing a refrigerant flow of another type of heat exchanger according to the present invention.

12 is an exploded perspective view showing another embodiment of the heat exchanger according to the present invention.

13 is a perspective view showing a refrigerant flow of another embodiment of the heat exchanger according to the present invention.

14 is an exploded perspective view showing another embodiment of the heat exchanger according to the present invention.

15 is a perspective view showing a refrigerant flow of another embodiment of the heat exchanger according to the present invention.

16 is a view showing a refrigerant temperature distribution of a conventional heat exchanger and a refrigerant temperature distribution of a heat exchanger according to the present invention.

17 is a perspective view showing a heat exchange area of the heat exchanger according to the present invention.

** Description of the symbols for the main parts of the drawings **

10: tube 20: pin

30,30 ': Upper and lower header 40,40': Upper and lower tank

41,41 ': Row 1 42,42': Row 2

43,44: inlet and outlet pipe 45: first baffle

46: third baffle 47: second baffle

48: second communication means 49: third communication means

50: partition 51: first communication means

60, 60 ': upper and lower header tank 100: heat exchanger

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger for preventing the increase of the heat exchanger size and improving the distribution of the refrigerant of the heat exchanger by arranging the configuration of the inlet and outlet in the air inflow direction of the header tank.

The heat exchanger is a device in which the refrigerant is introduced and the introduced refrigerant is moved to a tube having a fin to cool or heat the tube to radiate heat or heat the refrigerant to flow out.

A conventional general heat exchanger is shown in FIG.

As shown, the conventional heat exchanger 200 comprises a plurality of tubes 110 are arranged side by side stacked at a predetermined interval; A plurality of fins 120 interposed between the tubes 110; And a header 130 into which both ends of the tube are inserted and fixed, upper and lower tanks 140 and 140 'coupled to an upper portion of the header 130 to form a refrigerant flow path, and a refrigerant flow path inside the tanks 140 and 140'. A header tank (160) comprising partition walls (150) for partitioning the inlet side rows and the outlet side rows in a longitudinal direction; It is made, including.

An outlet pipe 144 is provided at one side of the outlet side row 142 of the upper tank 140 and an inlet pipe 143 at which one side of the inlet side column 141 of the upper tank 140 is introduced. Is provided. The inlet side heat 141 is generally configured at the rear side of the wind blowing direction to maximize the heat exchange performance. In addition, in the case of most automotive heat exchangers, the pipeline 170 is installed at the front end of the tank, that is, the direction in which the wind blows, and the expansion valve TXV, which is a pressure reducing means, is often mounted at the engine room side of the vehicle. Thus, in order to mount the pipeline 170 to the engine room side of the vehicle should be configured as the front.

Accordingly, since the heat exchanger requires space in the stacking direction of the fin and tube for the inlet / outlet configuration as shown in FIG. 2, the size of the heat exchanger is inevitably increased, resulting in poor mounting of the heat exchanger unit of the vehicle. . In addition, because of the flow characteristics on the inlet / outlet side of the refrigerant, the fluid is pulled out and discharged when there is no separate fluid distribution means, so that a phenomenon occurs that the temperature is biased to one side. There was a problem that was degraded.

3 and 4 show examples in which the heat exchanger is used as an evaporator.

As shown, the long side of the evaporator is shown mounted vertically or horizontally with the transverse direction of the vehicle.

In the conventional side pipe, the long side of the evaporator is mounted perpendicular to the transverse direction of the vehicle in FIG. 3. However, the long side of the evaporator is horizontally mounted as shown in FIG. 4. In the case of mounting horizontally in the direction, since the pipeline requires space in the stacking direction of the fins and tubes, there is a problem that the size of the case is inevitably increased and the mountability of the heat exchanger unit of the vehicle is deteriorated.

In the case of installing the pipeline at the front end of the tank to connect with the expansion valve (TXV), since the pipeline is installed in the longitudinal direction of the header tank, an unnecessary space in the longitudinal direction is generated to increase the overall size of the heat exchanger. In addition, since the amount of air flow to the pipeline is leaked, an attachment such as a seal is required to prevent this, and the overall size of the case is increased. In addition, as the length of the pipeline increases, unnecessary pressure loss increases and there is a problem of deterioration due to unnecessary heat exchange in the pipeline.

As one example for reducing the size of the heat exchanger among these problems, Japanese Patent Application Laid-Open No. 2004-349305 has been disclosed, which is illustrated in FIG. 5.

As shown, the heat exchanger can reduce the size of the entire heat exchanger by removing some fins or tubes to install the pipeline 170 in shear and installing the pipeline 170 in this removed space. There is an advantage, however, because some fins or tubes are removed, which degrades performance.

Another example for reducing the size of the heat exchanger is to install the pipeline 170 to the side of the header tank 160 to reduce the size of the entire heat exchanger. In this case, since the inlet pipe 143 must move through the outlet side row 142 to the inlet side row 141, a configuration for passing through the partition wall 150 of the header tank 160 is required.

To this end, as shown in FIG. 6, a part of the outlet side row 142 of the header tank 160 is blocked by using a shielding means 145 such as a baffle, and the inlet pipe 143 is used by the communicating means 146. The structure can be formed. In this case, rows 1 to 5 of the outlet side row 142 in which the outlet pipe 144 is installed cannot be used. As a result, the tube and the fin of the outlet side row 142 are reduced, which causes a problem of deterioration in performance.

In addition, the communication means is provided so that the inlet pipe 143 passes directly through the outlet side column 142 to the inlet side column 141 without using shielding means to use the tubes and pins of the rows 1 to 5 of the outlet side row 142. However, in this case, the area of the flow path inside the outlet side row 142 of the header tank may be reduced, resulting in a pressure drop and a refrigerant imbalance, and a through portion of the outlet side row 142 and the inlet side row 141. When leakage occurs between the inlet side 141 connecting pipes, not only such defects are impossible to find, but also when the defects occur, there is a problem that a quality problem may occur due to a decrease in performance.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to arrange the configuration of the inlet and outlet to the side of the header tank can prevent the increase in the size of the heat exchanger, improve the mounting of the heat exchanger It is possible to reduce the heat exchanger unit, and to provide a heat exchanger capable of improving manufacturability.

It is another object of the present invention to provide a heat exchanger for improving the distribution of the refrigerant of the heat exchanger.

In addition, another object of the present invention is to provide a heat exchanger capable of improving the dryness and temperature distribution and improving the performance of the overall heat exchanger by allowing a part of the refrigerant to be introduced to be discharged together with the refrigerant discharged under reduced pressure.

Heat exchanger of the present invention for achieving the above object is arranged in two rows in the air flow direction and a plurality of tubes arranged in parallel at a predetermined interval (10); A plurality of fins 20 interposed between the tubes 10; Upper tank 30 and the lower header 30 ', which is fixed at both ends of the tube 10, and the upper tank 30 are coupled to the upper header 30 and the lower header 30', respectively, to form a refrigerant flow path. 40 and the lower tank 40 ', and the coolant flow paths in the upper tank 40 and the lower tank 40' in the first direction (41, 41 ') and the second row (42, 42') in the longitudinal direction. The upper header tank 60 and the lower header tank 60 'including a partition 50 partitioned into the upper wall; In the heat exchanger 100 including, the first row 41 and the second row 42 of the upper tank 40 is provided with a first baffle 45 for partitioning the inside, the first baffle The inlet pipe 43 into which the coolant flows in and the outlet pipe 44 through which the coolant flows out are provided at one side of the upper tank 40 and the second row 42 around the 45, respectively. The first communication means 51 which communicates the first row 41 and the second row 42 is provided on the rear partition 50, and the second row 42 of the upper tank 40 A second baffle 47 is provided at a portion located between the inlet pipe 43 and the outlet pipe 44 to partition the inside of the second row 42. The upper part is formed around the first baffle 45. The second communication means 48 for communicating the first row 41 and the second row 42 is provided on the partition 50 located at the other side of the tank 40.

In addition, the lower tank 40 'is a third communication means for communicating the second row 42' and the first row 41 'at a corresponding position where the inlet pipe 43 is installed ( 49 is provided, and the second row 42 'of the lower tank 40' is disposed at a position corresponding to the second baffle 47 positioned between the inlet pipe 43 and the outlet pipe 44. Three baffles 46 are provided.

In addition, the third baffle 46 of the present invention is characterized in that the communication hole 46a is provided.

In addition, the present invention is a third baffle having a communication hole 46a at a portion located between the inlet pipe 43 and the outlet pipe 44 in the second row 42 'of the lower tank 40' ( 46) is provided.

In addition, the present invention includes a first region for forming a refrigerant passage by one side of the first row 41 of the upper tank 40 and one side of the first row 41 'of the lower tank 40'; A second region forming a coolant flow path by the other side of the first row 41 of the upper tank 40 and the other side of the first row 41 'of the lower tank 40'; A third region forming a coolant flow path by the other side of the second row 42 of the upper tank 40 and the other side of the second row 42 'of the lower tank 40'; One side of the second row 42 of the upper tank 40 and the second row 42 'of the lower tank 40' positioned between the first baffle 45 and the first communication means 51. A fourth region forming a refrigerant passage by the other side; One side of the second row 42 of the upper tank 40 and the second row 42 'of the lower tank 40' which is adjacent to the fourth region and includes the first communication means 51. An auxiliary region for forming a refrigerant passage by The refrigerant flows into the first region or the fourth region through the auxiliary region.

In addition, the communication hole 46a of the present invention is characterized by having an area corresponding to a diameter of 0.5 to 8mm.

In addition, the second baffle 47 of the present invention is installed at a position that is 7 to 40% of the length of the upper header tank 60 and the lower header tank 60 '.

Hereinafter, with reference to the accompanying drawings a heat exchanger of the present invention having the features as described above will be described in detail.

7 is a perspective view of a heat exchanger according to the present invention, FIG. 8 is an exploded perspective view of a header tank of a heat exchanger according to the present invention, FIG. 9 is a perspective view showing a fluid flow of the heat exchanger according to the present invention, and FIG. 11 is an exploded perspective view showing another type of heat exchanger according to the present invention, and FIG. 11 is a perspective view showing a refrigerant flow of another type of heat exchanger according to the present invention, and FIG. 12 is an exploded perspective view showing another type of heat exchanger according to the present invention. 13 is a perspective view showing a refrigerant flow of another type of heat exchanger according to the present invention, FIG. 14 is an exploded perspective view showing another type of heat exchanger according to the present invention, and FIG. 15 is still another view according to the present invention. A perspective view showing a refrigerant flow of a heat exchanger of the type, Figure 16 is a view showing the refrigerant temperature distribution of the conventional heat exchanger and the refrigerant temperature distribution of the heat exchanger according to the present invention 17 is a perspective view showing a heat exchange area of the heat exchanger according to the present invention.

As shown, the heat exchanger 100 according to the present invention comprises a plurality of tubes 10 arranged in parallel in a predetermined interval arranged in two rows in the air flow direction; A plurality of fins 20 interposed between the tubes 10; An upper header 30 and a lower header 30 'into which both ends of the tube 10 are inserted and fixed; An upper tank 40 and a lower tank 40 'coupled to the upper header 30 and the lower header 30' to form a refrigerant flow path, respectively; And partition walls 50 for partitioning the coolant flow paths in the upper tank 40 and the lower tank 40 'into first rows 41 and 41' and second rows 42 and 42 'in the longitudinal direction. It consists of an upper header tank 60 and a lower header tank 60 '.

The tubes 10 are arranged side by side to form a refrigerant flow path, and a plurality of tubes 10 are provided. In addition, a fin 20 is interposed between the respective tubes 10.

The upper header tank 60 and the lower header tank 60 'are provided at both ends of the tube 10, respectively, and the upper header 30 and the lower header 30' at which both ends of the tube 10 are inserted and fixed. ), An upper tank 40 and a lower tank 40 'coupled to an upper portion of the upper header 30 and the lower header 30' to form a refrigerant passage, and a partition wall partitioning an internal space of the refrigerant passage. It consists of 50.

The upper header 30 and the lower header 30 'are formed with a plurality of tube insertion holes 31 and 31' at which both ends of the tube 10 are fixed. The upper tank 40 and the lower tank 40 ') Together with the refrigerant flow path is formed.

The upper tank 40 and the lower tank 40 'are combined with upper portions of the upper header 30 and the lower header 30' to form a refrigerant passage together with the upper header 30 and the lower header 30 '. Form. In the upper tank 40 and the lower tank 40 ', partition walls 50 are provided to partition the refrigerant flow path into the first rows 41 and 41' and the second rows 42 and 42 'in the longitudinal direction. .

In addition, the first row 41 and the second row 42 of the upper tank 40 are provided with a first baffle 45 for partitioning the inside. The interior of the first row 41 and the second row 42 of the upper tank 40 is divided left and right by the first baffle 45.

At one side of the second row 42 of the upper tank 40 and the second baffle 42 around the first baffle 45, inlet / outlet pipes 43 and 44 through which coolant flows in and out are provided and communicate with each other.

As such, the present invention compensates for the problem of the conventional heat exchanger by removing a portion of the fin and tube to the side of the header tank so that the configuration of the inlet and outlet is arranged in the air inlet direction without removing a portion of the fin and tube. It is possible to reduce the size of the device and to prevent the removal of the pins and the poor brazing.

In addition, the partition wall 50 located behind the inlet pipe 43 is provided with first communication means 51 for communicating the first row 41 and the second row 42. In addition, the second row 42 of the upper tank 40 is provided with a second baffle 47 partitioning the inside at a portion located between the inlet pipe 43 and the outlet pipe 44.

At this time, the second baffle 47 is provided at a position where the distance w located from one end of the lower header tank 60 'is 7 to 40% of the length L of the header tanks 60 and 60'. It is desirable to be. When the second baffle 47 is biased toward the first baffle 45 installed in the middle of the upper header tank 60, the amount of refrigerant discharged to the heat exchanger outlet side is reduced, and the second baffle 47 is disposed. If too far from the first baffle (45) side installed in the middle of the upper header tank 60, the pressure loss of the introduced refrigerant is large. In addition, the other side of the upper tank 40 is provided with a second communication means 48 for communicating the first row 41 and the second row 42.

Accordingly, the heat exchanger of the present invention has a refrigerant flow as shown in FIG. 9.

The refrigerant flowing into the inlet pipe 43 flows into one side of the second row 42 of the upper tank 40 and is blocked by the second baffle 47, so that the first communication means provided in the partition wall 50 is provided. It is moved to the first row 41 of the upper tank 40 through (51). When the coolant is moved to the first row 41 of the upper tank 40, some of the coolant branches and passes through the tube 10 in the second row 42 of the upper tank 40 and the lower tank ( 40 ') is moved to one side of the second column 41'. The refrigerant moved to the first row 41 of the upper tank 40 through the first communicating means 51 is the first row 41 'of the lower tank 40' through the tube 10. The refrigerant is moved to the other side of the first row (41 ') of the lower tank (40') around the first baffle (45), the upper tank (40) through the tube (10) ) Is moved to the other side of the first row 41. The refrigerant moved to the other side of the first row 41 of the upper tank 40 is moved to the other side of the second row 42 of the upper tank 40 through the second communication means 48, and the tube ( 10) after moving to the other side of the second row 42 'of the lower tank 40' and moving to one side of the second row 42 'of the lower tank 40' to branch off the lower tank 40 '. The second column 41 'is joined with some refrigerant moved to one side, and is moved to one side of the second row 42 of the upper tank 40 through the tube 10 to be discharged through the outlet pipe 44.

10 is an exploded perspective view showing another type of heat exchanger according to the present invention, and FIG. 11 is a perspective view showing a refrigerant flow of another type of heat exchanger according to the present invention.

As shown, the heat exchanger of another type according to the present invention has the same basic structure as the heat exchanger according to the present invention described above, but the difference is the inlet pipe 43 in the second row 42 'of the lower tank 40'. ) And a third baffle 46 is provided at a portion located between the outlet pipe 44 and the lower tank 40 'at the corresponding position where the inlet pipe 43 is installed. And third communication means 49 for communicating the first row 41 'with each other.

Another type of heat exchanger according to the present invention having the above configuration has a refrigerant flow as shown in FIG. 11.

The refrigerant introduced into the inlet pipe 43 flows into one side of the second row 42 of the upper tank 40, and a part of the refrigerant flows into the second row of the lower tank 40 ′ through the tube 10. 42 '), and the rest of the refrigerant is blocked by the second baffle 47, so that the first row of the upper tank 40 through the first communication means 51 provided in the partition 50 41). A part of the refrigerant moved to the second row 42 'of the lower tank 40' is blocked by the third baffle 46, so that the refrigerant passes through the third communicating means 49 to the lower tank 40 '. The first row 41 'is moved to one side and is moved to one side of the first row 41 of the upper tank 40 through the tube 10 to the first tank (41) through the first communication means (51) The fluid joined and part of the refrigerant moved to the first row 41 is transferred to the first row 41 'of the lower tank 40' through the tube 10, and the transferred refrigerant is transferred to the first row 41 '. 1 baffle 45 is moved to the other side of the first row 41 'of the lower tank 40', and to the other side of the first row 41 of the upper tank 40 through the tube 10. Is moved. The refrigerant moved to the other side of the first row 41 of the upper tank 40 is moved to the other side of the second row 42 of the upper tank 40 through the second communication means 48, and the tube ( 10 to the other side of the second row 42 'of the lower tank 40' and then to the second row 42 'of the lower tank 40' to one side of the upper tank 40 through the tube 10 again. It is moved to one side of the second row 42 of) will be discharged through the outlet pipe (44).

12 is an exploded perspective view showing another type of heat exchanger according to the present invention, Figure 13 is a perspective view showing a refrigerant flow of another type of heat exchanger according to the present invention.

As shown, another type of heat exchanger according to the present invention has the same basic structure as the other type of heat exchanger according to the present invention described above, but the difference is provided with the communication hole 46a in the third baffle 46. When the communication hole 46a is provided in the third baffle 46, the third baffle refrigerant may be prevented from being concentrated.

At this time, the communication hole 46a preferably has an area corresponding to the diameter of 0.5 ~ 8mm.

Another type of heat exchanger according to the present invention having the above configuration has a refrigerant flow as shown in FIG. 11.

The refrigerant introduced into the inlet pipe 43 flows into one side of the second row 42 of the upper tank 40, and a part of the refrigerant flows into the second row of the lower tank 40 ′ through the tube 10. 42 '), and the rest of the refrigerant is blocked by the second baffle 47, so that the first row of the upper tank 40 through the first communication means 51 provided in the partition 50 41). A part of the refrigerant moved to the second row 42 'of the lower tank 40' is moved to the third baffle 46 in which the third communication means 49 and the communication hole 46a are formed. The refrigerant passing through the communication means 49 is moved to one side of the first row 41 'of the lower tank 40' and is moved to one side of the first row 41 of the upper tank 40 through the tube 10. The fluid joined and part of the refrigerant moved to the first row 41 of the upper tank 40 through the first communication means 51 is the fluid of the lower tank 40 'through the tube 10. The refrigerant is moved to the first row 41 ', and the moved refrigerant is moved to the other side of the first row 41' of the lower tank 40 'around the first baffle 45, and the tube 10 It is moved to the other side of the first row 41 of the upper tank 40 through. The refrigerant moved to the other side of the first row 41 of the upper tank 40 is moved to the other side of the second row 42 of the upper tank 40 through the second communication means 48, and the tube The refrigerant passing through the communication hole 46a by moving to the other side of the second row 42 'of the lower tank 40' after moving to the other side of the second row 42 'of the lower tank 40' through 10; Joined and moved to one side of the second row 42 of the upper tank 40 through the tube 10 is discharged through the outlet pipe 44. At this time, the refrigerant passing through the communication hole 46a is decompressed and joined.

14 is an exploded perspective view showing another type of heat exchanger according to the present invention, Figure 15 is a perspective view showing a refrigerant flow of another type of heat exchanger according to the present invention.

As shown, another type of heat exchanger according to the present invention has a basic structure similar to that of the heat exchanger according to the present invention described above, but the difference is provided with the communication hole 46a in the third baffle 46.

Accordingly, another type of heat exchanger according to the present invention has a refrigerant flow as shown in FIG. 15.

The refrigerant introduced into the inlet pipe 43 flows into one side of the second row 42 of the upper tank 40, and a part of the refrigerant flows into the second row of the lower tank 40 ′ through the tube 10. 42 '), and the rest of the refrigerant is blocked by the second baffle 47, so that the first row of the upper tank 40 through the first communication means 51 provided in the partition 50 41). A portion of the refrigerant moved to the second row 42 'of the lower tank 40' passes through the communication hole 46a of the third baffle 46. The refrigerant moved to the first row 41 of the upper tank 40 through the first communicating means 51 is the first row 41 'of the lower tank 40' through the tube 10. The refrigerant is moved to the other side of the first row (41 ') of the lower tank (40') around the first baffle (45), and joined with the refrigerant passing through the communication hole (46a) The tube 10 is moved to one side of the second row 42 of the upper tank 40 to be discharged through the outlet pipe 44. At this time, the refrigerant passing through the communication hole 46a is decompressed and joined.

As such, when a part of the refrigerant flowing in is decompressed and mixed with the rest of the refrigerant discharged through the heat exchanger, the refrigerant may be discharged by being discharged toward the outlet side of the refrigerant, thereby reducing the problem of the conventional heat exchanger. By improving the distribution of the heat exchange performance can be improved.

(A) is a figure which shows the temperature distribution of the general heat exchanger, (b) is a figure which shows the temperature distribution of the heat exchanger of this invention.

As shown, the conventional heat exchanger is a temperature distribution is biased to one side because the refrigerant is concentrated to the outlet side, while the heat exchanger of the present invention is a portion of the refrigerant is decompressed and mixed with the rest of the refrigerant passing through the heat exchanger Thus, the temperature distribution of the refrigerant is even.

As such, the present invention can improve the temperature distribution by allowing a part of the refrigerant to be introduced to be discharged together with the refrigerant discharged under reduced pressure.

17 illustrates the heat exchanger as a heat exchange region.

As shown, the heat exchanger of the present invention includes a first zero which forms a refrigerant flow path by one side of the first row 41 of the upper tank 40 and one side of the first row 41 'of the lower tank 40'. Inverse (a); A second region (b) forming a refrigerant flow path by the other side of the first row 41 of the upper tank 40 and the other side of the first row 41 'of the lower tank 40'; A third region (c) forming a refrigerant flow path by the other side of the second row (42) of the upper tank (40) and the other side of the second row (42 ') of the lower tank (40'); One side of the second row 42 of the upper tank 40 and the second row 42 'of the lower tank 40' positioned between the first baffle 45 and the first communication means 51. A fourth region d which forms a refrigerant passage by the other side; One side of the second row 42 of the upper tank 40 and the second row 42 'of the lower tank 40' which is adjacent to the fourth region d and includes the first communication means 51. An auxiliary region (e) forming a refrigerant flow path by the other side of It consists of.

In this case, it is preferable to allow the introduced refrigerant to join the first region or the fourth region through the auxiliary region.

The present invention is not limited to the above-described embodiments, and the scope of application is not limited, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

Accordingly, the heat exchanger of the present invention can prevent the increase of the heat exchanger size, improve the mountability of the heat exchanger, by minimizing the heat exchanger unit by arranging the configuration of the inlet and outlet on the side of the header tank, It is possible to improve the manufacturability, to improve the dryness and temperature distribution by reducing a portion of the refrigerant to be discharged together with the refrigerant discharged, and to improve the distribution of the refrigerant to improve the performance of the overall heat exchanger. .

Claims (7)

A plurality of tubes 10 arranged in two rows in the air flow direction and arranged in parallel at a predetermined interval; A plurality of fins 20 interposed between the tubes 10; The upper tank 30 and the lower header (30 ') is inserted into both ends of the tube 10, the upper tank 30 is coupled to the upper header 30 and the lower header (30'), respectively, to form a refrigerant flow path ( 40, the lower tank 40 ', and the coolant flow paths in the upper tank 40 and the lower tank 40' in the longitudinal direction of the first rows 41, 41 'and the second rows 42, 42'. An upper header tank 60 and a lower header tank 60 'including partition walls 50 to be divided into; In the heat exchanger 100 comprising: The first row 41 and the second row 42 of the upper tank 40 are provided with a first baffle 45 for partitioning the inside, The inlet pipe 43 through which the refrigerant flows in and the outlet pipe 44 through which the refrigerant flows out are provided at one side of the second row 42 of the upper tank 40 around the first baffle 45. A first communication means 51 is provided on the rear wall 50 of the pipe 43 to communicate the first row 41 and the second row 42. In the second row 42 of the upper tank 40, a second baffle 47 partitioning the inside of the second row 42 is located at a portion located between the inlet pipe 43 and the outlet pipe 44. Equipped, Second communication means 48 for communicating the first row 41 and the second row 42 on the partition 50 located on the other side of the upper tank 40 with respect to the first baffle 45. Heat exchanger characterized in that the provided. The method of claim 1, The lower tank 40 'is provided with a third communication means 49 for communicating the second row 42' and the first row 41 'at a corresponding position where the inlet pipe 43 is installed. , In the second row 42 'of the lower tank 40', a third baffle 46 is disposed at a position corresponding to the second baffle 47 positioned between the inlet pipe 43 and the outlet pipe 44. Heat exchanger characterized in that provided. The method of claim 2, The third baffle (46) is a heat exchanger, characterized in that the communication hole (46a) is provided. The method of claim 1, The second row 42 'of the lower tank 40' is provided with a third baffle 46 provided with a communication hole 46a at a portion located between the inlet pipe 43 and the outlet pipe 44. Heat exchanger characterized in that. According to claim 1, wherein the heat exchanger, A first region (a) defining a refrigerant flow path by one side of the first row (41) of the upper tank (40) and one side of the first row (41 ') of the lower tank (40'); A second region (b) forming a refrigerant flow path by the other side of the first row 41 of the upper tank 40 and the other side of the first row 41 'of the lower tank 40'; A third region (c) forming a refrigerant flow path by the other side of the second row (42) of the upper tank (40) and the other side of the second row (42 ') of the lower tank (40'); One side of the second row 42 of the upper tank 40 and the second row 42 'of the lower tank 40' positioned between the first baffle 45 and the first communication means 51. A fourth region d which forms a refrigerant passage by the other side; One side of the second row 42 of the upper tank 40 and the second row 42 'of the lower tank 40' which is adjacent to the fourth region d and includes the first communication means 51. An auxiliary region (e) forming a refrigerant flow path by the other side of It consists of The introduced heat exchanger is introduced into the first region (a) or the fourth region (d) through the auxiliary region (e). The method according to claim 3 or 4, The communication hole (46a) is a heat exchanger, characterized in that it has an area corresponding to a diameter of 0.5 ~ 8mm. The method of claim 1, The second baffle (47) is a heat exchanger, characterized in that installed in the position of 7 to 40% of the length of the upper header tank (60) and lower header tank (60 ').

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