KR101082475B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, and more particularly, by dividing the inside of the inlet and outlet side header tanks into a plurality of passages and by providing a separate connection pipe connecting the inlet and outlet side header tanks. The present invention relates to a heat exchanger capable of maintaining a uniform right surface temperature and reducing left and right temperature deviations of air passing through a heat exchanger.

Accordingly, the present invention is the inlet and outlet side header tanks 110 and 120, which are spaced apart by a predetermined interval in parallel with each other, respectively; A plurality of tubes 130 having both ends thereof coupled to the inlet and outlet side header tanks 110 and 120; A heat dissipation fin 140 interposed between the tubes 130; A connection pipe 180 installed at one side of the tube 130 to communicate with each other one of a plurality of passages of the inlet and outlet side header tanks 110 and 120; It characterized in that it comprises the inlet, outlet pipes 160, 161 coupled to one end of the inlet, outlet side header tank 110, 120, respectively.

Heat exchanger, header tank, connector, partition wall, baffle

Description

Heat exchanger

1 is a cross-sectional view showing a conventional heat exchanger,

2 is a perspective view of a heat exchanger according to the present invention;

3 is a cross-sectional view showing a heat exchanger according to a first embodiment of the present invention;

4 is a cross-sectional view showing a heat exchanger according to a second embodiment of the present invention.

Description of the Related Art [0002]

100: heat exchanger 110: inlet header tank

111,121: header 112,122: tank

113: baffle 113a, 123, 123a: partition wall

115,115a: first passage 116,116a: second passage

125,125a: third passage 126,126a: fourth passage

120: outlet header tank 130: tube

140: heat sink fin 150: side support

160: inlet pipe 161: outlet pipe

170: end cap 180: connector

The present invention relates to a heat exchanger, and more particularly, to separate the inside of the inlet and outlet side header tank into a plurality of passages, and to provide a separate connection pipe connecting the inlet and outlet side header tanks. The heat exchanger can reduce the left and right temperature deviation of the air passing through the heat exchanger while maintaining the right surface temperature uniformly.

The heat exchanger used in the automotive air conditioner is installed on the heat exchange medium flow path of the cooling and heating system so that the heat exchange medium flowing therein absorbs outside heat or radiates its own heat to the outside. Allow the room to cool and heat.

Examples of the heat exchanger include an evaporator, a heater core, a condenser, and a radiator. Among the heat exchangers, an evaporator and a heater core are selectively installed in an air conditioning case that heats and heats the air blown by the blower.

1 illustrates an example of a heater core in the heat exchanger 1, which describes an inlet and outlet side header tank 2 and a third spaced apart from each other by a predetermined interval up and down. End caps (9) coupled to both ends of the outlet side header tank (2) (3), and a plurality of tubes (4) having both ends coupled to the inlet and outlet side header tank (2) (3), Inlet and outlet pipes (7) coupled to the heat dissipation fins (5) interposed between the tubes (4) and the end caps (9) of the inlet and outlet side header tanks (2) and (3) to introduce heat exchange media (7). (8).

And, in order to reinforce the tubes 4 and the heat dissipation fins 5, side supports 6 are provided at their outermost sides.

Therefore, the heat exchange medium flows into the inlet header tank 2 through the inlet pipe 7 and then flows through the tubes 4 into the outlet header tank 3.

Subsequently, the heat exchange medium introduced into the outlet header tank 3 is discharged through the outlet pipe 8.

Here, the heat exchange medium transfers heat to the heat radiating fins 5 while passing through the tubes 4 to actively perform heat exchange with external air.

However, the conventional heat exchanger 1 has a problem that the temperature of the surface of the heat exchanger 1 is also uneven because the amount of heat exchange medium flowing through the respective tubes 4 is uneven.

That is, although the heat exchange medium flowing into the inlet header tank 2 through the inlet pipe 7 should flow uniformly through the entire tubes 4, the tube 4 close to the inlet pipe 7 is not. Most of the flow to the side of the inlet pipe (7) and the tube (4) located in the far place is a small amount of heat exchange medium flows.

Therefore, the left and right surface temperatures of the heat exchanger 1 become nonuniform, and thus there is a problem that a large temperature deviation of air passing through the heat exchanger 1 also occurs.

An object of the present invention for solving the above problems is to divide the inside of the inlet and outlet side header tank into a plurality of passages and to provide a separate connection pipe connecting the inlet and outlet side header tank The present invention provides a heat exchanger that maintains the left and right surface temperatures uniformly and reduces the left and right temperature deviations of air passing through the heat exchanger.

In order to achieve the above object, the present invention comprises a plurality of inlet and outlet side header tanks spaced apart from each other side by side and a plurality of passages therein; A plurality of tubes coupled to both ends of the inlet and outlet side header tanks; A heat dissipation fin interposed between the tubes; A connection pipe installed at one outer side of the tube to communicate with each other one of a plurality of passages of the inlet and outlet header tanks; And an inlet and an outlet pipe respectively coupled to one end of the inlet and outlet side header tanks.

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

Repeated description of the same construction and operation as in the prior art will be omitted.

2 is a perspective view showing a heat exchanger according to the present invention, Figure 3 is a cross-sectional view showing a heat exchanger according to a first embodiment of the present invention.

The heat exchanger 100 according to the present invention is spaced up and down at a predetermined interval and arranged in parallel with each other, and a plurality of passages 115, 116, 125 and 126 are formed therein, respectively, the inlet and outlet side header tanks 110 and 120, and the End caps 170 coupled to both ends of the inlet and outlet side header tanks 110 and 120 and both ends of the inlet and outlet side header tanks 110 and 120 are coupled to the inlet and outlet side header tanks ( 110 and 120, a plurality of tubes 130 to communicate with, the heat dissipation fin 140 is interposed between the tubes 130 to increase the heat transfer area to promote heat exchange, the tube 130 and the heat dissipation fin 140 Consists of the side support 150 is installed on the outside of them to protect.

Here, the inlet and outlet side header tanks 110 and 120 are headers 111 and 121 in which a plurality of tube holes (not shown) are formed so that both ends of the tubes 130 can be coupled, and the headers 111. It is composed of tanks 112 and 122 coupled to the (121) to form a passage through which the heat exchange medium can flow.

In addition, at predetermined positions of the inlet and outlet side header tanks 110 and 120, inlet and outlet pipes 160 and 161 are provided to allow the heat exchange medium to flow in and out.

That is, the inlet pipe 160 is horizontally coupled to the end cap 170 coupled to one end of the inlet header tank 110, and the end cap 170 coupled to one end of the outlet header tank 120. At the outlet pipe 161 is horizontally coupled.

Each of these components is joined together by brazing in a preassembled state.

In addition, one side of the tube 130 is connected to communicate with each other one of the passages (116, 126) of the plurality of passages (115, 116, 125, 126) of the inlet, outlet side header tank (110, 120) The pipe 180 is installed.

Here, the connection pipe 180 is installed on the opposite side of the inlet and outlet pipes 160 and 161, and the second passage 116 and the outlet side of the inlet header tank 110 to be described below. The fourth passage 126 of the header tank 120 is to communicate with each other.

In addition, the passage area of the connection pipe 180 is larger than the passage area of the tube 130 so that flow resistance does not occur when the heat exchange medium flows from the second passage 116 to the third passage 126. It is preferable to form.

In addition, a baffle 113 is formed at an approximately center of the inlet header tank 110 so as to divide the plurality of passages 115 and 116 in the longitudinal direction, and the baffle 113 is referred to. As a result, a first passage 115 communicating with the inlet pipe 160 and one side tube 130, and a second passage 116 communicating with the connection tube 180 and the other side tube 130, are provided.

In addition, a partition wall 123 is formed in the outlet header tank 120 so as to divide the plurality of passages 125 and 126 in the height direction, and through the entire tube 130. A third passage 125 communicating with the first and second passages 115 and 116 and a fourth passage 126 communicating with the connection pipe 180 and the outlet pipe 161 are provided. Here, both sides of the third passage 125 are closed.

As described above, the heat exchange medium circulation process of the heat exchanger 100 according to the first embodiment of the present invention will be described as follows.

First, the heat exchange medium flowing through the inlet pipe 160 flows into the first passage 115 of the inlet header tank 110.

The heat exchange medium introduced into the first passage 115 flows along the one side tube 130 based on the baffle 113 and flows into the third passage 125 of the outlet header tank 120. Thus, the heat exchange medium returns from the third passage 125 and this time flows along the other tube 130 group and flows into the second passage 116 of the inlet header tank 110.                     

In this case, the heat exchange medium performs active heat exchange with external air in the course of flowing through the one side tube 130 group and the other side tube 130 group.

In addition, the heat exchange medium introduced into the second passage 116 flows to the fourth passage 126 of the outlet header tank 120 along the connection pipe 180, and then the outlet pipe 161. Through the final discharge.

Therefore, since the heat exchange medium introduced through the inlet pipe 160 flows sequentially through one tube 130 group and the other tube 130 group partitioned by the baffle 113, the entire tube 130 is uniformly formed. It is possible to improve the non-uniformity by increasing the heat dissipation, and to increase the amount of heat dissipation. Will be reduced.

4 is a cross-sectional view showing a heat exchanger according to a second embodiment of the present invention, and only a portion different from the above-described first embodiment will be described, and repeated descriptions thereof will be omitted.

As shown in the drawing, the second embodiment has a plurality of passages 115a, 116a, 125a, and 126a formed inside the inlet and outlet side header tanks 110 and 120, as in the first embodiment. However, the dividing structure of the passages 115a, 116a, 125a, 126a is different so that the circulation path of the heat exchange medium is changed. Of course, in the second embodiment, a connecting pipe 180 is installed to communicate the second passage 116a of the inlet header tank 110 and the fourth passage 126a of the outlet header tank 120.                     

Accordingly, a partition wall 113a is formed inside the inlet header tank 110 so as to divide the plurality of passages 115a and 116a in the height direction, thereby forming the inlet pipe 160 and the whole. A first passage 115a communicating with one end of the tube 130 and a second passage 116a communicating with the inlet pipe 160 and the connecting pipe 180 are provided.

In addition, a partition wall 123a is formed in the outlet header tank 120 so as to divide the plurality of passages 125a and 126a in the height direction so that the other end of the entire tube 130 is formed. And a third passage 125a communicating with the outlet pipe 161 and a fourth passage 126a communicating with the connection pipe 180 and the outlet pipe 161.

The first and third passages 115a and 125a may be formed to be larger than the second and fourth passages 116a and 126a, and the first and third passages 115a and 125a may be formed at one side. The inlet and outlet pipes 160 and 161 communicate with each other, but the other side is closed.

As described above, the heat exchanger 100 according to the second embodiment has two flow paths having different circulation paths of the heat exchange medium.

That is, the first flow path is configured to connect the first passage 115a, the entire tube 130, the third passage 125a and the outlet pipe 161 starting from the inlet pipe 160, which is a conventional heat exchanger. Same as the media circulation path. Accordingly, although a large flow rate flows toward the tube 130 installed near the inlet and outlet pipes 160 and 161 as in the related art, a smaller flow rate flows away from the inlet and outlet pipes 160 and 161. The closer to the inlet and outlet pipes 160 and 161, the higher the temperature and the farther the temperature, the lower the left and right temperature differences. In order to improve this, the second passage bypasses the tube 130 without passing through it. It is provided.

The second flow path is configured to connect the second passage 116a, the connection pipe 180, the fourth passage 126a and the outlet pipe 161 starting from the inlet pipe 160, that is, the inlet pipe. A portion of the heat exchange medium introduced through the 160 is bypassed directly to the outlet pipe 161 through the connection pipe 180. Accordingly, the high temperature heat of the heat exchange medium passing through the connecting pipe 180 is transferred to the low temperature tubes 130 installed far away from the inlet and outlet pipes 160 and 161 and eventually raises the temperature. The left and right temperature difference of the heat exchanger 100 can be improved uniformly.

As described above, in the present invention, the internal pipes of the inlet and outlet side header tanks 110 and 120 are divided into two, and at the same time, the connection pipe 180 connecting the inlet and outlet side header tanks 110 and 120 is connected. Although only a case in which the configuration in which the left and right temperature difference of the heat exchanger 100 is uniformly applied to the heater core has been described, the present invention is not limited thereto and may be applied to all heat exchangers such as a radiator, a condenser, and an evaporator. The effect can be obtained.

According to the present invention, the internal passages of the inlet and outlet side header tanks are divided into two, and the connection pipe connecting the inlet and outlet side header tanks is provided to maintain the left and right surface temperatures of the heat exchanger uniformly. At the same time, the left and right temperature deviations of the air passing through the heat exchanger can be reduced, thereby improving heat exchange performance.

Claims (4)

Inlet and outlet side header tanks 110 and 120 spaced apart from each other by a predetermined interval in parallel with each other; A plurality of tubes 130 having both ends thereof coupled to the inlet and outlet side header tanks 110 and 120; A heat dissipation fin 140 interposed between the tubes 130; A connection pipe 180 installed at one side of the tube 130 to communicate with each other one of a plurality of passages of the inlet and outlet side header tanks 110 and 120; Including the inlet and outlet pipes 160 and 161 coupled to one end of the inlet and outlet side header tanks 110 and 120, respectively, A partition wall 113a is formed inside the inlet header tank 110 so as to divide the plurality of passages in the height direction so as to communicate the inlet pipe 160 with the entire tube 130. The first passage 115a and the second passage 116a communicating the inlet pipe 160 and the connecting pipe 180 are provided. A partition wall 123a is formed in the outlet header tank 120 so as to divide the plurality of passages in the height direction so as to communicate the entire tube 130 and the outlet pipe 161. And a third passage (125a) and a fourth passage (126a) communicating the connecting pipe (180) and the outlet pipe (161). delete delete The method of claim 1, The passage area of the connecting pipe (180) is greater than the passage area of the tube (130).

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