KR20100007014A - Heat exchanger - Google Patents

Abstract

PURPOSE: A heat exchanger is provided to reduce the temperature deflection by preventing the refrigerant bias and to reduce the pressure decrease by making flow of the heat exchange media smooth. CONSTITUTION: A heat exchanger comprises a first header tank, a second header tank, an inlet pipe, an outlet pipe, and a plurality of tubes. The inlet pipe and the outlet pipe are formed on one side of the first header tank and are connected to first and second rows. A partition wall and a baffle(115) are formed inside the first header tank. The partition wall compartmentalizes the first row and the second row and has a first connecting part. The first connecting part is open to the side in which the inlet pipe and outlet pipe are not formed. A second connecting part(121) connected with the first row and the second row is formed inside the second header tank.

Description

Heat exchanger {HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly, the present invention provides a heat exchanger that can increase the heat exchange efficiency by reducing the temperature deviation by reducing the pressure drop of the heat exchange medium while reducing the problem of the refrigerant is biased.

In recent years, as the interest in the environment and energy in the automobile industry is increasing, researches for improving fuel efficiency have been conducted, and research and development for light weight, miniaturization, and high functionalization have been steadily made to satisfy various consumer needs.

In particular, the heat exchanger is a cooling or heating device that controls the internal temperature of the vehicle by heat exchange as part of an air conditioner, and since it is difficult to secure sufficient space inside the vehicle, a heat exchanger having a small size and high efficiency may be used. There has been effort.

The heat exchanger includes a first header tank 10 and a second header tank 20 spaced apart from each other by a predetermined distance; An inlet pipe 11 and an outlet pipe 12 formed in the first header tank 10 or the second header tank 20; A plurality of tubes 30 fixed at both ends of the first header tank 10 and the second header tank 20 to form a heat exchange medium flow path; And a pin 40 interposed between the tubes 30. It is made, including.

FIG. 1 illustrates a typical one-way heat exchanger flow, in which an inlet pipe 11 is formed on the left side of the first header tank 10 and an outlet pipe 12 is formed on the upper portion thereof. An example formed on the left side of the formed second header tank 20 is illustrated.

The one-way heat exchanger shown in FIG. 1 is moved to the second header tank through the tube while the heat exchange medium introduced through the inlet pipe is moved in the longitudinal direction of the second header tank, and the second header tank It is moved in the longitudinal direction of the discharge pipe is discharged.

By the way, the one-way heat exchanger has the advantage that the flow of the heat exchange medium is relatively simple so that the pressure of the heat exchange medium does not significantly decrease, but the inlet pipe and the outlet pipe are formed on one side of the heat exchanger, so that the inlet pipe And the heat exchange medium is concentrated in the region adjacent to the outlet pipe has a problem that the temperature distribution of the entire heat exchanger is non-uniform.

If the heat exchanger inside the heat exchange medium is uneven, the heat exchange performance of the heat exchanger is deteriorated and the temperature difference of the air discharged to the left and right of the interior of the vehicle is generated to reduce the temperature comfort of the user and the above problems The smaller the amount of media and the slower the flow rate, the larger the volume will be.

On the other hand, Figure 2a and 2b is a view showing a two-column heat exchanger of the counter flow (Counter Flow), the basic structure is similar to the form shown in Figure 1, one side of the upper first header tank (10) The inlet pipe 11 is formed on the other side and the outlet pipe 12 is formed on the other side, the tube 30 is formed in two rows, the first row and the second row in the first tank 10 is partitioned An example in which a baffle 13 is formed is illustrated.

The heat exchanger of the counter flow type flows into the first row of the first header tank through the inlet pipe and is moved in the longitudinal direction, and is moved to the lower second header tank through the first row tube. The first row and the second row communicate with each other, and then move to the second row of the first header tank, and then move in the longitudinal direction and are discharged through the outlet pipe.

The counter flow heat exchanger has an advantage of reducing the temperature difference due to heat exchange medium deflection as compared with the one-way heat exchanger, but the second heat exchanger compared to the flow rate of the heat exchange medium moved through the first heat tube. Since the cross-sectional area of R is relatively narrow, there is a problem in that the pressure drop of the heat exchange medium becomes large in the portion.

When the pressure drop of the heat exchange medium is increased, the state of the heat exchange medium is changed, and the flow of the heat exchange medium is not smooth, thereby degrading the performance of the heat exchange medium.

Accordingly, a heat exchanger capable of improving heat exchange efficiency by reducing a pressure drop of the heat exchange medium and preventing a refrigerant deflection and having a uniform temperature distribution is required.

The present invention has been made to solve the problems described above, an object of the present invention is to provide a heat exchanger having a uniform temperature distribution in the entire region by preventing the refrigerant deflection while reducing the pressure drop by smoothly flowing the heat exchange medium It is.

More specifically, an object of the present invention is a simple structure for forming a partition and a baffle in which the first communication portion is formed, and a predetermined region in the longitudinal direction of the heat exchanger is formed in a one-way manner in which the flow of the first row and the second row is the same. The region is to provide a heat exchanger that can be formed in a counter flow method in which the first and second columns have flows in opposite directions to each other to reduce the pressure drop and the temperature variation.

The heat exchanger of the present invention includes a first header tank and a second header tank spaced apart from each other by a predetermined distance; An inlet pipe and an outlet pipe formed in the first header tank or the second header tank; A plurality of tubes having both ends fixed to the first header tank and the second header tank to form a heat exchange medium flow path, and having first and second rows; And pins interposed between the tubes; The heat exchanger comprising: the heat exchanger is formed such that the inlet pipe and the outlet pipe communicate with a first row and a second row on one side of the first header tank, respectively, the first row and the inside of the first header tank. A partition wall defining a second column but having a first communication part for opening a predetermined area to the other side where the inlet pipe and the outlet pipe are not formed, and the first communication part connected to the partition wall in the first row or the second row; A baffle is formed to form a region isolated from the second header tank in which the inlet pipe and the outlet pipe are not formed. A second communication portion communicating with the first row and the second row is formed.

The heat exchanger includes: a first heat exchange area in which the heat exchange medium introduced through the inlet pipe is moved in the longitudinal direction of the first header tank and moved to the second header tank through the entire first heat tube; A portion of the heat exchange medium introduced through the inlet pipe and moved in the longitudinal direction of the first header tank is moved to the second row of the first header tank through the first communication part, and through the part of the second row tube. A second heat exchange zone moved to the two header tanks; And a heat exchange medium having passed through the first heat exchange zone and the second communication section or through the first communication section and the second heat exchange zone and moved to the second row of the second header tank through the portion of the second heat tube. A third heat exchange zone moved to a header tank and discharged through the outlet pipe; Characterized in that it is formed to include.

The partition wall may be formed such that a width of the first row is smaller than a width of the second row in the width direction of the first header tank or the second header tank, and the partition wall is formed of the first header tank or the first header tank. The width of the first row in the width direction of the two header tanks is characterized in that it is formed so as to extend in the direction in which the first communication portion of the first header tank or the second header tank is formed.

Accordingly, the heat exchanger of the present invention is a simple structure that controls the formation position of the inlet pipe and the outlet pipe, and has a partition and a baffle in which the first communication portion is formed, and facilitates the flow of the heat exchange medium to reduce the pressure drop, And since the heat exchange medium flows smoothly even in a region far from the outlet pipe has the advantage of reducing the temperature variation by preventing the refrigerant bias.

In addition, the heat exchanger of the present invention has a one-way heat exchange flow in a certain region in the longitudinal direction, the remaining area has a counter flow heat exchange flow to compensate for the disadvantages of each method has the advantage of increasing the heat exchange efficiency.

Hereinafter, a heat exchanger 100 having the features as described above will be described in detail with reference to the accompanying drawings.

3 is a partial exploded perspective view showing a heat exchanger 100 of the present invention, Figure 4 is a schematic diagram showing the flow of the heat exchanger 100 of Figure 3, Figures 5 to 7 is a heat exchanger 100 of the present invention 2 is a view showing the shape of the partition wall 113 according to.

The heat exchanger 100 of the present invention includes a first header tank 110 and a second header tank 120 which are spaced apart from each other at a predetermined distance; An inlet pipe 111 and an outlet pipe 112 formed in the first header tank 110 and the second header tank 120; A plurality of tubes 130 having both ends fixed to the first header tank 110 and the second header tank 120 to form a heat exchange medium flow path and having a first row and a second row; And a pin 140 interposed between the tubes 130. In the heat exchanger 100 comprising a, the heat exchanger 100 is the inlet pipe 111 and the outlet pipe 112 is the first row and the second row on one side of the first header tank 110 and It is formed to communicate.

In the present invention, the first header tank 110 refers to a header tank in which the inlet pipe 111 and the outlet pipe 112 are formed, and the inlet pipe 111 and the outlet pipe are illustrated in the drawing. 112 may be formed on the upper side.

In addition, the present invention defines a header tank in which the inlet pipe 111 and the outlet pipe 112 are formed as a first header tank 110, and a first header in which the inlet pipe 111 and the outlet pipe 112 are formed. The partition wall 113 and the baffle 115 are formed in the tank 110.

The partition wall 113 separates the first row and the second row from the inside of the first header tank 110 and moves to the other side (the right side in the drawing) in which the inlet pipe 111 and the outlet pipe 112 are not formed. The first communication unit 114 is formed to open a predetermined region.

The first communication unit 114 is a space in which the heat exchange medium is moved by communicating the first row and the second row.

In this case, an end portion of the partition wall 113 is formed with a baffle 115 to form an area separated from the first communication portion 114 in the first row or the second row, the inlet pipe 111, the outlet The second communication part 121 is formed in the second header tank 120 where the pipe 112, the partition wall 113, and the baffle 115 are not formed to communicate with the first row and the second row.

In FIG. 3, the baffle 115 is formed in the second row.

When the heat exchanger 100 is viewed from the side, the present invention has a one-way method in which the heat exchange medium flows in the first row and the second row have the same one-way, and the remaining areas of the first row and the second row The heat exchange medium flow forms a counter flow method in which the flow is opposite to each other.

First, the heat exchange medium flow of the heat exchanger 100 according to the present invention will be described with reference to FIG. 4. In the drawing, the inlet pipe 111 is connected to a first row of the region formed in front of the outlet pipe. The region 112 is connected to and formed in the second column.

The heat exchanger 100 of the present invention includes a first heat exchange area A1 of a first row; A second heat exchange zone A2 and a third heat exchange zone A3 positioned adjacent to the second column; And a heat exchange medium introduced through the inlet pipe 111 passes through the first heat exchange zone A1 and the third heat exchange zone A3, or the second heat exchange zone A2 and the third heat exchange zone. It is discharged through the outlet pipe 112 via the area A3.

In the first heat exchange area A1, the heat exchange medium introduced through the inlet pipe 111 is moved in the longitudinal direction of the first header tank 110, and the second heat exchange medium is formed through the entire first heat tube 130. It means an area to be moved to the header tank 120.

In the second heat exchange area A2, a portion of the heat exchange medium introduced through the inlet pipe 111 does not pass through the first heat exchange area A1, but directly through the first communication part 114. It is moved to the second row of the first header tank 110 and is moved to the second header tank 120 through a part of the second row tube 130.

The third heat exchange area A3 is a region formed adjacent to the second heat exchange area A2, and passes through the first heat exchange area A1 and the second communication part 121 or the first communication part. The heat exchange medium moved through the 114 and second heat exchange zones A2 to the second row of the second header tank 120 is transferred to the first header tank 110 through a part of the second row tube 130. The area is moved and discharged to the outlet pipe 112.

That is, the third heat exchange area A3 passes through the first heat exchange area A1 or the second heat exchange area A2, and the heat exchange medium introduced into the second row of the second header tank 120 is transferred to the first header tank. (110) It is an area to be discharged in two rows.

The heat exchanger 100 according to the present invention includes a portion T1 in which the first heat exchange area A1 and the second heat exchange area A2 are formed, in which the flow of the first heat and the second heat is the same, and the first heat and the second heat. The pressure drop by appropriately mixing the conventional one-way method and the counter flow method by having a mixed flow of the portion T2 in which the first heat exchange area A1 and the third heat exchange area A3 are formed, in which heat flows are opposite to each other. The temperature variation can be reduced while lowering the heat exchange efficiency.

In addition, the heat exchanger 100 of the present invention shows an example in which the partition wall 113 is formed only up to a predetermined region in the longitudinal direction of the first header tank 110, but the partition wall 113 is the first header tank ( 110 may be formed to be long and a predetermined portion of the partition wall 113 may be hollow to form the first communication part 114.

That is, the first communication unit 114 may adjust an area formed by adjusting a length or a hollow area in which the partition wall 113 is formed.

FIG. 5 illustrates an example in which the partition wall 113 is formed at the center portion in the width direction of the first header tank 110 so that the width W _{1 of} the first row and the width W _{2 of} the second row are the same. Although illustrated, the heat exchanger 100 of the present invention may change the formation position of the partition wall 113 to adjust the amount of the heat exchange medium guided to the first communication unit 114.

The width W _{1 of} the first row and the width W _{2 of} the second row mean a width of a space partitioned by the partition wall 113 in the first header tank 110.

FIG. 6 shows that the partition wall 113 has the width W _{1 of} the first row in the width direction of the first header tank 110 or the second header tank 120 with the width of the second row W ₂ . as an illustrative example is formed to less than, the above-described form shown in Figure 6 to the first heat exchange zone (A1) being smaller than the first width of the column (W ₁₎ of the second row width (W ₂₎ The amount of heat exchange medium passing through the first communication part 114 and passing through the second heat exchange area A2 may be increased.

FIG. 7 illustrates an example in which the partition wall 113 is formed to be inclined at a predetermined angle with the longitudinal direction of the first header tank 110. The partition wall 113 may include the first header tank 110 or the second header. The width W _{1 of} the first row in the width direction of the tank 120 increases as the first communication portion 114 of the first header tank 110 is formed (in the figure, left-> right). It is formed to lose.

In this case, the partition wall 113 may be formed in various ways in the range that does not prevent the tube 130 is inserted into the header tank and fixed.

6 and 7 provide a smooth distribution of the heat exchange medium to the other region where the inlet pipe 111 and the outlet pipe 112 are not formed, thereby smoothing the distribution of the heat exchange medium, thereby reducing left and right temperature variations. Since it can be reduced, there is an advantage to increase the user's temperature comfort.

Therefore, the heat exchanger 100 of the present invention can reduce the pressure on the engine by preventing the pressure drop of the heat exchange medium and can reduce the temperature variation of the entire heat exchanger 100.

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.

1 is a view showing the flow of a one-way heat exchanger.

Figures 2a and 2b is a view showing the flow of the counter flow (Counter Flow) heat exchanger.

Figure 3 is a partially exploded perspective view showing a heat exchanger of the present invention.

4 is a schematic diagram illustrating the heat exchanger flow of FIG. 3.

5 to 7 is a view showing the partition form according to the heat exchanger of the present invention.

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

100: heat exchanger

110: first header tank

111: Inlet pipe 112: Outlet pipe

113: bulkhead 114: first communication unit

115: baffle

120: second header tank 121: second communication unit

130: tube

140: pin

W ₁ : width of column 1 W ₂ : width of column 2

A1 ~ A3: 1st heat exchange zone ~ 3rd heat exchange zone

Claims (4)

A first header tank 110 and a second header tank 120 provided side by side at a predetermined distance; An inlet pipe 111 and an outlet pipe 112 formed in the first header tank 110 or the second header tank 120; A plurality of tubes 130 fixed at both ends of the first header tank 110 and the second header tank 120 to form a heat exchange medium flow path and having first and second rows; And a pin 140 interposed between the tubes 130. In the heat exchanger 100 comprising a, The heat exchanger 100 The inlet pipe 111 and the outlet pipe 112 are formed to communicate with the first row and the second row on one side of the first header tank 110, respectively. The first communication part 114 which divides the first row and the second row into the first header tank 110 but opens a predetermined area to the other side where the inlet pipe 111 and the outlet pipe 112 are not formed. ) Is formed a barrier rib 113 and a baffle 115 connected to the barrier rib 113 to form an area isolated from the first communication portion 114 in the first row or the second row, The second heat exchanger 121 is formed in the second header tank 120 in which the inlet pipe 111 and the outlet pipe 112 are not formed. . The method of claim 1, The heat exchanger 100 The heat exchange medium introduced through the inlet pipe 111 is moved to the second header tank 120 through the entire first row tube 130 while moving in the longitudinal direction of the first header tank 110. One heat exchange area A1; A portion of the heat exchange medium flowing through the inlet pipe 111 and moved in the longitudinal direction of the first header tank 110 to the second row of the first header tank 110 through the first communication part 114. A second heat exchange area A2 which is moved and moved to the second header tank 120 through a part of the second heat tube 130; And Passes through the first heat exchange area A1 and the second communication part 121 or through the first communication part 114 and the second heat exchange area A2 and moves to the second row of the second header tank 120. A third heat exchange area A3, wherein the heat exchange medium is moved to the first header tank 110 through a portion of the second heat tube 130 and is discharged through the outlet pipe 112; Heat exchanger characterized in that it comprises a. The method according to claim 1 or 2, The partition wall 113 is formed such that the width W _{1 of} the first row is smaller than the width W _{2 of} the second row in the width direction of the first header tank 110 or the second header tank 120. Heat exchanger, characterized in that. The method according to claim 1 or 2, The partition wall 113 has the width W _{1 of} the first row in the width direction of the first header tank 110 or the second header tank 120 and the first communication portion of the first header tank 110. Heat exchanger, characterized in that is formed so as to proceed in the direction in which the 114 is formed.

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