KR20240093165A - X-turn heat exchanger - Google Patents

Abstract

The present invention relates to heat exchangers. The purpose of the present invention is to provide a heat exchanger that can realize an In particular, the purpose of the present invention is to provide a heat exchanger that takes the configuration of a conventional two-row heat exchanger almost as is but realizes an

Description

X-turn heat exchanger {X-turn heat exchanger}

The present invention relates to a heat exchanger, and more specifically, to a heat exchanger in which the paths of heat exchange media intersect each other in one tank in a two-row heat exchanger in which four passes are formed.

Generally, in the engine room of a vehicle, there are not only driving parts such as the engine, but also various heat exchangers such as radiators, intercoolers, evaporators, and condensers to cool each part of the vehicle such as the engine or to control the air temperature inside the vehicle. are provided. Such heat exchangers generally have a heat exchange medium distributed inside them, and cooling or heat dissipation is achieved by heat exchange between the heat exchange medium inside the heat exchanger and the air outside the heat exchanger. This heat exchanger is generally formed in a form that includes a plurality of tubes arranged in parallel with each other through which refrigerant flows, and a pair of header tanks provided at both ends of the tube row composed of the tubes.

The path of the heat exchange medium in the heat exchanger varies depending on the purpose or location of the heat exchanger, but usually the tubes are formed in one row or arranged in two rows in the front and back directions. In the case of a two-row heat exchanger, the refrigerant path can be formed in various ways, for example, two passes where the first and second rows each form one pass, or one of the first or second rows is divided to form two passes. There may be 3 passes where the first row and the second row each form 2 passes, etc.

Figure 1 briefly shows the heat exchange medium progress path of a typical 4-pass, 2-row heat exchanger. Based on what is drawn in the drawing, the heat exchange medium flows into the first row and passes through all of the first core, then moves to the second row, passes through all of the second core, and is then discharged. Accordingly, the heat exchange medium proceeds in the order ① - ② - ③ - ④ in FIG. 1. In other words, the front core and rear core each have two passes, forming a total of four passes.

In this way, when a two-row heat exchanger forms a four-pass system, heat exchange performance can be expected to improve because the heat exchange medium is distributed more evenly throughout the core. However, from a different perspective, compared to 2-pass, the pressure drop increases and the channel length also increases by about two times. Additionally, because the number of tubes included in each pass is small, the flow rate of the heat exchange medium increases by about two times. If the pressure drop of the heat exchange medium is large, the difference between the saturation temperature on the inlet side and the saturation temperature on the outlet side increases, and as a result, the average saturation temperature increases and the temperature difference with the outside air decreases, resulting in a risk of deterioration of heat exchange performance.

In order to solve the problem of weakening the advantage of advantageous dispersion of the heat exchange medium in the 4-pass 2-row heat exchanger, attempts have been made to improve the path of the heat exchange medium. In Japanese Patent Publication No. 2017-003140 (“Refrigerant Evaporator,” 2017.01.05., hereinafter referred to as “prior document”), heat exchange performance is improved by making the heat exchange medium progress paths identical in each of the front and rear cores. promote In the prior literature, in order to match the path of the heat exchange medium, a flow path through which the heat exchange medium can cross is formed in the header tank, and a separate header tank is further provided to allow the cross flow in the header tank.

In this way, in order to implement an This causes an increase in cost due to the complexity of the header assembly structure, and there is also the problem of having to replace the equipment because it is not compatible with conventional production equipment. In addition, not only is the packaging disadvantageous due to the increase in header assembly height, but there is also a risk of stagnation of heat exchange media such as refrigerant and oil under low flow conditions due to the increase in the volume of the lower tank.

Japanese Patent Publication No. 2017-003140 (“Refrigerant Evaporator”, 2017.01.05.)

Therefore, the present invention was made to solve the problems of the prior art as described above, and the purpose of the present invention is to heat the header tank by using a special type of baffle and a communication hole arranged accordingly in a 4-pass 2-row heat exchanger. The aim is to provide a heat exchanger that can realize X-turn, or cross-progress, of the heat exchange medium. In particular, the purpose of the present invention is to provide a heat exchanger that takes the configuration of a conventional two-row heat exchanger almost as is but realizes an

The heat exchanger 100 of the present invention for achieving the above-described object includes a first tank 110 formed in two rows by a first partition wall 115 and forming a fluid flow space therein; A second tank (120) forming a fluid flow space inside, formed in two rows by a second partition wall (125), and arranged side by side at a certain distance below the first tank (110); A plurality of tubes 150 arranged in two rows with both ends fixed to the first tank 110 and the second tank 120 to form a flow path for a heat exchange medium; It includes, the fluid flow space of the first row of the second tank 121 is separated into the 1-1 space and the 1-2 space, and the fluid flow space of the second row of the second tank 122 is the 2- It may be formed to be separated into space 1 and space 2-2, so that the heat exchange medium flows from space 1-1 to space 2-2 and from space 1-2 to space 2-1.

At this time, the heat exchanger 100 includes a first communication hole 123 and a second communication hole 124 formed on the second partition wall 125 and spaced apart in the longitudinal direction; A cross baffle 130 that separates the fluid flow space of the first row of second tanks 121 or the second row of second tanks 122 into two spaces in the longitudinal direction; A half baffle 140 that separates the fluid flow space of the second tank 120 in a row other than the row where the cross baffle 130 is arranged into two spaces in the longitudinal direction; may include. Additionally, in the heat exchanger 100, the first communication hole 123 and the second communication hole 124 may be spaced apart in the height direction.

Additionally, the heat exchanger 100 may be formed to have an inlet through which the heat exchange medium flows into the first row of the first tank 111 and an outlet through which the heat exchange medium is discharged into the second row of the first tank 112.

In addition, the heat exchanger 100 has a heat exchange medium, the inlet, the first row of the first tank 111, the first row of tubes 150, the first row of the second tank 121- 1 space, the 2-2 space of the second row of the second tank 122, the second row of the tubes 150, the second row of the first tank 112, and the outlet are sequentially passed through. 1 progress path (①-②) and the inlet, the first tank first row 111, the first row of tubes 150, the 1-2 space of the second tank first row 121, the A second progress path ( It can be formed to be distributed along any one progress path selected from ⓐ-ⓑ).

Additionally, in the heat exchanger 100, the half baffle 140 may be disposed at a position between the first communication hole 123 and the second communication hole 124 spaced apart in the longitudinal direction.

In addition, the cross baffle 130 is disposed at a different height from the first baffle part 131, which separates the flow of the heat exchange medium in the longitudinal direction, and separates the flow of the heat exchange medium in the longitudinal direction. The second baffle part 132 is separated, and the first and second baffle parts 131 and 132 are formed at both ends to connect the first and second baffle parts 131 and 132 to each other, and the first communication It may include a connection portion 133 disposed between the hole 123 and the second communication hole 124 spaced apart in the height direction to separate the flow of the heat exchange medium in the height direction.

Additionally, in the heat exchanger 100, the first and second communication holes 123 and 134 may be formed between the first and second baffle parts 131 and 132.

In addition, the cross baffle 130 includes the first baffle portion 131 and the second baffle portion along the direction in which the first communication hole 123 and the second communication hole 124 are spaced apart in the height direction. (132) may extend upward or downward.

In addition, the cross baffle 130 is located at a location where either the first baffle part 131 or the second baffle part 132 meets the end of the second partition wall 125. ) may include a locking portion 134 formed to be caught.

In addition, in the heat exchanger 100, each of the first communication hole 123 and the second communication hole 124 is formed to extend a length corresponding to the area where one to three tubes 150 are formed. You can.

In addition, the heat exchanger 100 is such that the distance between the first communication hole 123 and the end of the second tank 120 adjacent thereto is the distance between the second communication hole 124 and the end of the second tank 120 adjacent thereto. The distance between the ends may be made equal to each other.

According to the present invention, in a 4-pass 2-row heat exchanger, the heat exchange medium in the header tank makes an There is a great effect of achieving the advantages of single dispersion and two-pass, such as improving flow resistance and reducing pressure drop, at the same time.

Meanwhile, various designs have been proposed in the past for heat exchanger structures that enable . That is, in the past, a separate header tank was required for the There were performance problems such as packaging disadvantages due to the increase in assembly height and problems with stagnation of the heat exchange medium under low flow conditions due to the increase in the volume of the lower tank. However, according to the present invention, these problems are fundamentally eliminated, and since only baffles and communication holes need to be added to the existing heat exchanger configuration, conventional production equipment can be used almost as is, resulting in high compatibility and inherent high economic efficiency. It has a big effect.

Figure 1 shows the heat exchange medium progress path of a typical 4-pass, 2-row heat exchanger.
Figure 2 is an example of the heat exchange medium progress path in a conventional heat exchanger.
Figure 2 is a configuration diagram of the heat exchanger of the present invention.
Figure 3 is a heat exchange medium progress path (perspective view) of the heat exchanger of the present invention.
Figure 4 is a perspective view of the first and second heat exchange medium progress paths of the heat exchanger of the present invention.
Figure 5 is a heat exchange medium progress path (front view) of the heat exchanger of the present invention.
Figure 6 is an enlarged view of the X-turn structure of the heat exchanger of the present invention.
Figure 7 is a perspective view of a cross baffle.
Figure 8 is a detailed view of the heat exchange medium progress path in the X-turn structure.

Hereinafter, a heat exchanger according to the present invention having the above-described configuration will be described in detail with reference to the attached drawings.

Figure 2 briefly shows the configuration of the heat exchanger of the present invention. Similar to a typical two-row heat exchanger, the heat exchanger 100 of the present invention basically includes a first tank 110 and a second tank 120 spaced apart in the vertical direction, as well as between the tanks 110 and 120. It includes a plurality of tubes 150 arranged in, and all are formed in two rows, front and back. To be more specific, the first tank 110 forms a fluid flow space inside and is formed in two rows in the front-back direction by the first partition wall 115, and the second tank 120 has a fluid flow space inside. Forming a space, they are formed in two rows in the front-back direction by the second partition wall 125 and are arranged side by side at a certain distance apart from the lower side of the first tank 110. In the present invention, the first row 111 and the second row of the first tank are denoted as the first row 111 of the first tank and the second row of the first tank 112, respectively, and the first row of the second tank 120 The first and second rows were designated as the first row of the second tank (121) and the second row of the second tank (122), respectively. In addition, the plurality of tubes 150 are fixed at both ends to the first tank 110 and the second tank 120 to form a flow path for the heat exchange medium and are arranged in two rows in the front-back direction. Here, the heat exchanger 100 of the present invention may be an evaporator, and the heat exchange medium may be a refrigerant.

Incidentally, here, “front” and “rear” are simply indicated as shown in the drawing for convenient explanation on the drawing. Meanwhile, in the case of a heat exchanger, front/rear are generally indicated based on the direction of movement of external air, but front/rear in the present invention may or may not coincide with this. In the present invention, front/rear are only referred to in consideration of convenience in explaining the flow of heat exchange medium inside the heat exchanger, and are therefore irrelevant to the direction of movement of external air. Of course, direction indicators such as “left”, “right”, “up”, and “down” used in the following explanation should also be understood from this perspective.

In addition to the basic configuration as described above, in the present invention, the heat exchanger 100 first divides the fluid flow space of the first row 121 of the second tank into a 1-1 space and a 1-2 space, The fluid flow space of the second row of second tanks 122 is formed to be separated into a 2-1 space and a 2-2 space. In addition, the heat exchanger 100 is formed so that the heat exchange medium crosses from the 1-1 space to the 2-2 space and from the 1-2 space to the 2-1 space.

FIG. 3 shows all travel paths of the heat exchange medium of the heat exchanger of the present invention, FIG. 4 shows the travel paths in FIG. 3 divided into first and second travel paths, and FIG. 5 shows the travel paths in FIG. 3 viewed from the front. It is divided into the first and second columns. Referring to Figures 3 to 5, the heat exchange medium progress path in the heat exchanger 100 of the present invention will be described in detail as follows.

Basically, the heat exchanger 100 of the present invention is divided into regions in a similar form to the 4-pass 2-row heat exchanger shown in FIG. 1, and has an inlet through which the heat exchange medium flows into the first tank 1st row 111, and a first The second row of tanks 112 is formed to have an outlet through which the heat exchange medium is discharged. However, unlike the 4-pass 2-row heat exchanger in which the heat exchange medium moves in both upward and downward directions in each of the first and second rows, in the heat exchanger 100 of the present invention, the heat exchange medium flows downward in the first row. In the second row, the heat exchange medium only moves upward. In order for the heat exchange medium to advance in this way, in the second tank 120, the heat exchange medium crosses, that is, makes an X turn, as indicated by the dotted line in FIG. 3.

To be more specific, referring first to the upper view of FIG. 4, some of the heat exchange media are in the inlet, the first row of the first tank 111, the first row of tubes 150, and the first row of the second tank. The 1-1 space of (121), the 2-2 space of the second row of the second tank (122), the second row of the tubes (150), the second row of the first tank (112), and the outlet. It is distributed along the first progress path (①-②), which passes sequentially. Also, referring to the lower view of FIG. 4, the remaining part of the heat exchange medium is in the inlet, the first row of the first tank 111, the first row of tubes 150, and the first row of the second tank 121. Proceeds to sequentially pass through space 1-2, space 2-1 of the second row of the second tank 122, second row of the tubes 150, second row of the first tank 112, and the outlet. It is distributed along the second progress path (ⓐ-ⓑ).

If there is no After passing through space 2, it will proceed to space 2-2 of the first tank 110 along path ⓐ. Then, the heat exchange medium moves downward in the first column on the left (①) and upward in the first column on the right (ⓐ). In addition, the heat exchange medium that has passed into the second row space will sequentially proceed through ② pass and ⓑ pass, ultimately moving downward in the second column on the right (②) and upward in the second column on the left (ⓑ). In other words, a heat exchange medium progress path similar to the 4-pass, 2-row heat exchanger shown in FIG. 1 is formed. However, as explained earlier, while this progression path has the advantage of dispersing the heat exchange medium evenly throughout, it increases the flow path length and flow resistance, and also increases the saturation temperature difference due to the pressure drop difference at the inlet and outlet, resulting in There was a risk of deteriorating the overall heat exchange performance.

In the present invention, the advantages of uniform heat exchanger dispersion in a 4-pass, 2-row heat exchanger are retained, but by allowing the heat exchange medium to cross in the second tank (X-turn), the heat exchange medium is ultimately formed in a form corresponding to 2 passes. A progression path is formed. The upper drawing of Figure 5 shows the heat exchange medium progress path in the first row, and the lower drawing shows the heat exchange medium progress path in the second row. In the heat exchanger 100 of the present invention, as the heat exchange media crosses in the second tank as described above, the heat exchange media all move downward in the first column on the left (①) and the first column on the right (ⓐ), and in the first column on the right, In the second row (②) and the second left row (ⓑ), the heat exchange medium all moves upward. In other words, when divided into the first row and second row, the same heat exchange medium flow as in the two-pass, two-row heat exchanger is formed in the core part (the part made of tubes) where heat exchange mainly occurs. As a result, factors that deteriorate heat exchange performance, such as increased flow path length, flow resistance, and pressure drop of the 4-pass 2-row heat exchanger, and the resulting increase in saturation temperature difference between the inlet and outlet, are fundamentally eliminated, enabling heat exchange performance to be improved much more effectively. do.

In this way, the heat exchanger 100 of the present invention separates the areas within the two-row heat exchanger like four passes, but includes an intersecting path in the middle, so it is operated like two passes. At this time, if the separated area is deflected to either the left or right, there is a risk of uneven distribution of the heat exchange medium, so it is preferable that the position where the heat exchange medium crosses is formed near the center of the heat exchanger 100 in the left and right directions. More specifically, the distance between the first communication hole 123 and the end of the second tank 120 adjacent thereto is the distance between the second communication hole 124 and the end of the second tank 120 adjacent thereto. It is preferable that they are formed identically to each other.

In addition, the heat exchanger of the present invention realizes cross-flow of heat exchange media very effectively by using a pair of communication holes and simple but specially shaped baffles. This is explained in detail as follows.

As simplified and shown in the perspective view of FIG. 3 and the front view of FIG. 5, the heat exchanger 100 of the present invention has a first communication hole (100) formed on the second partition 125 and spaced apart in the longitudinal direction. 123) and a second communication hole 124. In addition, a cross baffle 130 that separates the fluid flow space of the first row of the second tank 121 or the second row of the second tank 122 into two spaces in the longitudinal direction, the second tank 120 It also includes a half baffle 140 that separates the fluid flow space in a row other than the row in which the cross baffle 130 is arranged into two spaces in the longitudinal direction. In the drawings, the cross baffle 130 is shown as being provided in the first row and the half baffle 140 is provided in the second row, but they may be arranged interchangeably (that is, the cross baffle 130 is provided in the second row). In the second row, the half baffle 140 may be provided in the first row). However, for the sake of concise explanation, the present invention will be described based on what is shown in the drawings.

The half baffle 140 is provided at a position between the first communication hole 123 and the second communication hole 124 spaced apart in the longitudinal direction. That is, by the half baffle 140, the space containing the first communication hole 123 and the space containing the second communication hole 124 are separated into left and right sides. At this time, in order to ensure that the The left and right sides of the space included and the space including the second communication hole 124 must be changed. At this time, since the left and right positions of the communication holes cannot be changed, the first communication hole 123 and the second communication hole 124 are arranged to be spaced apart in the height direction to ensure smooth spatial separation. . At this time, as shown in the upper view of FIG. 3, the cross baffle 130 is composed of a part disposed between communication holes spaced apart in the vertical direction and parts extending from the ends of these to separate the space. , the communication holes are included in the left and right spaces of the first row, which are opposite to the left and right spaces of the second row divided by the half baffle 140.

Figure 6 is an enlarged view of the X-turn structure of the heat exchanger of the present invention, and Figure 7 is a perspective view of the cross baffle. To be more specific, Figure 6 shows a view from the bottom of the second tank 120 with the tank portion removed and only the header portion left so that the internal structure is visible. Accordingly, the positions of the communication holes and the arrangement of the baffles shown in FIG. 5 appear reversed. In FIG. 6, the cross baffle 130 is shown translucently to show the connection relationship with communication holes, etc., and in FIG. 7, only the cross baffle 130 is clearly shown separately. The shape and arrangement position of the cross baffle 130 will be described in more detail with reference to FIGS. 6 and 7 as follows.

As shown, the cross baffle 130 includes a pair of baffle parts 131 and 132 and a connection part 133 connecting them. As shown in FIG. 6, the connecting portion 133 is disposed at a position between the first communication hole 123 and the second communication hole 124 spaced apart in the height direction to horizontally separate the space, As a result, the flow of heat exchange medium is separated in the height direction. The first baffle part 131, one of the pair of baffle parts, separates the flow of the heat exchange medium in the longitudinal direction, and the second baffle part 132, the other one, also separates the flow of the heat exchange medium in the longitudinal direction. It is disposed at a different height from the first baffle part 131. More specifically, the first baffle part 131 is provided at one end of the connection part 133 and extends to surround the first communication hole 123 together with the connection part 133 to vertically separate the space. As a result, the flow of heat exchange medium is separated in the longitudinal direction. In addition, the second baffle portion 132 is provided at the other end of the connecting portion 133 and extends to surround the second communication hole 124 together with the connecting portion 133 to vertically separate the space, thereby performing heat exchange. Separate the flow of media longitudinally.

In FIG. 5, the first communication hole 123 is disposed at the upper side and the second communication hole 124 is disposed at the lower side (Figure 6 is an inverted shape of FIG. 5, so the first communication hole 123 is disposed at the lower side. However, if the heat exchanger 100 is standing upright as shown in FIG. 5, the first communication hole 123 is disposed at the upper side and the second communication hole 124 is disposed at the lower side as shown in FIG. 5.) . Of course, this is only an example, and the first communication hole 123 may be disposed at the lower side and the second communication hole 124 may be disposed at the upper side. Regardless of the vertical direction of the communication holes, the first baffle portion 131 and the second communication hole 131 are formed along the direction in which the first communication hole 123 and the second communication hole 124 are spaced apart in the height direction. As long as the baffle portion 132 is formed to extend upward or downward, each vertical portion can be formed to surround each communication hole.

Additionally, the cross baffle 130 is connected to the first baffle part 131 or the second baffle part, as shown in FIG. 7, in order to form a more robust connection with the second partition wall 125. It is preferable that any one selected from (132) includes a locking portion 134 formed to be caught by the second partition wall 125 at a position where it meets the end of the second partition wall 125.

Figure 8 shows a detailed view of the heat exchange medium progress path in the X-turn structure. Previously, it was explained that FIG. 6 shows the tank portion removed from the second tank 120, leaving only the header portion so that the internal structure is visible, and viewed from the bottom. Figure 6 is a front view, while Figure 8 is a rear view of the same part as Figure 6. As can be seen in FIG. 8, the heat exchange medium that has advanced along the path ① into the 1-1 space (the rear right space in FIG. 8) of the first row 121 of the second tank is in the cross baffle 130. It passes through the first communication hole 123 and goes to the 2-2 space (front left space in FIG. 8) of the second row 122 and proceeds along the ② path. In addition, the heat exchange medium that has advanced to the 1-2 space (rear left space in FIG. 8) of the first row 121 of the second tank along the path ⓐ is connected to the second communication hole (the second communication hole) by the cross baffle 130. 124), it moves to the 2-1 space (the front right space in FIG. 8) of the second tank 2nd row 122 and proceeds along path ⓑ.

Additionally, if the first and second communication holes 123 and 124 are too short, flow resistance may increase, and if the first and second communication holes 123 and 124 are too long, heat exchange media may leak through an undesired path. The length of the two communication holes 123 and 124 needs to be formed appropriately. At this time, according to a number of experimental results, as shown in FIGS. 6 and 8, each of the first communication hole 123 and the second communication hole 124 has one to three tubes 150. It is desirable to extend the length corresponding to the area to be formed.

As such, in the present invention, the arrangement of the first and second communication holes 123 and 124 in which the top, bottom, left and right are offset, and the top and bottom/left and right spatial separation positions by the cross baffle 130 and the half baffle 140 are appropriately combined. As a result, smooth passage of the heat exchange medium in the second tank 120 can be realized. In the conventional case, as shown in FIG. 2, a separate tank with a separate structure for cross-processing was provided, which increases the complexity of the header assembly and is not compatible with existing heat exchangers, reducing productivity and economic efficiency. There were performance problems such as falling, space utilization deteriorated due to the overall increase in volume, and stagnation occurred. However, the basic form of the heat exchanger 100 of the present invention is almost the same as the existing 4-pass 2-row heat exchanger, but it has a simple structure using the positions of communication holes and the shape and arrangement of baffles, etc., so that the heat exchange medium flows smoothly. Make sure it can be done. Accordingly, according to the present invention, various problems of conventional heat exchangers as described above can be fundamentally eliminated.

The present invention is not limited to the above-described embodiments, and its scope of application is diverse, and anyone skilled in the art can understand it without departing from the gist of the invention as claimed in the claims. Of course, various modifications are possible.

100: heat exchanger
110: first tank 111: first tank first row
112: 1st tank 2nd row 115: 1st bulkhead
120: 2nd tank 121: 2nd tank 1st row
122: 2nd tank 2nd row 123: 1st communication hole
124: second communication hole 125: second bulkhead
130: cross baffle
131: first baffle part 132: second baffle part
133: connection part 134: catching part
140: half baffle 150: tube

Claims (12)

A first tank forming a fluid flow space inside and formed in two rows by a first partition wall;
a second tank forming a fluid flow space therein, formed in two rows by a second partition wall, and arranged in parallel at a certain distance apart from the lower side of the first tank;
a plurality of tubes arranged in two rows with both ends fixed to the first tank and the second tank to form a flow path for a heat exchange medium;
Includes,
The fluid flow space in the first row of the second tank is separated into space 1-1 and space 1-2, and the fluid flow space in the second row of the second tank is separated into space 2-1 and space 2-2. Became,
A heat exchanger characterized in that the heat exchange medium is formed to cross from the 1-1 space to the 2-2 space and from the 1-2 space to the 2-1 space.
The method of claim 1, wherein the heat exchanger,
a first communication hole and a second communication hole formed on the second partition wall and spaced apart in the longitudinal direction;
A cross baffle dividing the fluid flow space of the first row of the second tank or the second row of the second tank into two spaces in the longitudinal direction;
a half baffle dividing the fluid flow space of the second tank in a row other than the row in which the cross baffles are arranged into two spaces in the longitudinal direction;
A heat exchanger comprising a.
The method of claim 2, wherein the heat exchanger,
A heat exchanger, wherein the first communication hole and the second communication hole are spaced apart in the height direction.
The method of claim 1, wherein the heat exchanger,
A heat exchanger characterized in that it is formed to have an inlet through which the heat exchange medium flows into the first row of the first tank and an outlet through which the heat exchange medium is discharged into the second row of the first tank.
The method of claim 4, wherein the heat exchanger,
The heat exchange medium is
The inlet, the first row of the first tank, the first row of tubes, the 1-1 space of the first row of the second tank, the 2-2 space of the second row of the second tank, the second row of tubes, the A first progress path that sequentially passes through the second row of the first tank and the outlet, and
The inlet, the first row of the first tank, the first row of tubes, the 1-2 space of the first row of the second tank, the 2-1 space of the second row of the second tank, the second row of tubes, the 2nd row of 1st tank, 2nd progress path that sequentially passes through the outlet
A heat exchanger characterized in that it is formed to circulate along any one selected progress path.
The method of claim 3, wherein the heat exchanger,
A heat exchanger, wherein the half baffle is disposed at a position between the first communication hole and the second communication hole spaced apart in the longitudinal direction.
The method of claim 3, wherein the cross baffle is:
A first baffle part that separates the flow of heat exchange medium in the longitudinal direction,
a second baffle part disposed at a different height from the first baffle part and separating the flow of the heat exchange medium in the longitudinal direction;
The first and second baffle parts are formed at both ends to connect the first and second baffle parts to each other, and are disposed at a position between the first communication hole and the second communication hole spaced apart in the height direction to allow the heat exchange medium to flow. The connection part that separates in the height direction
A heat exchanger comprising a.
The method of claim 7, wherein the heat exchanger,
A heat exchanger, wherein the first and second communication holes are formed between the first and second baffle parts.
The method of claim 8, wherein the cross baffle is:
A heat exchanger, wherein the first baffle portion and the second baffle portion extend upward or downward along a direction in which the first communication hole and the second communication hole are spaced apart in the height direction.
The method of claim 7, wherein the cross baffle is:
A heat exchanger characterized in that it includes a locking part formed to be caught by the second partition wall at a position where one of the first baffle part or the second baffle part meets an end of the second partition wall.
The method of claim 2, wherein the heat exchanger,
A heat exchanger, wherein each of the first communication hole and the second communication hole extends a length corresponding to an area where one to three tubes are formed.
The method of claim 2, wherein the heat exchanger,
A heat exchanger, characterized in that the distance between the first communication hole and the end of the second tank adjacent thereto is formed to be equal to the distance between the second communication hole and the end of the second tank adjacent thereto.

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