KR101104276B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, and more particularly, in a carbon dioxide heat exchanger, a header and a plurality of dome tanks are coupled to both ends of a plurality of rows of tubes through a connecting member having a connection flow path formed between the header and the tank. The specific part of the connection flow path is formed with a baffle to allow various changes / composition of the refrigerant flow path, as well as to reduce the volume of the header tank and improve processability, as well as to improve the pressure / durability.

Accordingly, the present invention includes a plurality of tube insertion holes 111a and 121a formed in a plurality of rows so as to be coupled to both ends of the plurality of tubes 130 arranged in a plurality of rows, the upper and lower headers 111 and 121; Upper and lower tanks 112 and 122 seated on the upper and lower headers 111 and 121 and protruding from the dome 112a and 122a in the insertion direction of each tube 130; The insertion grooves 116 and 126 are interposed between the headers 111 and 121 and the tanks 112 and 122 so that end portions of the tubes 130 are inserted into a plurality of rows. Upper and lower connection members 115 and 125 formed with connection passages 117a and 117b and 127a and 127b connecting the insertion grooves 116 and 126 to communicate the tubes 130 in the row; The refrigerant is formed to close a specific portion of at least one or more connection passages 117a, 117b, 127a, 127b of the connection passages 117a, 117b, 127a, 127b of the upper and lower connection members 115, 125. Is characterized in that it comprises a baffle 118 for switching the flow direction of the refrigerant to flow the tube 130 in a zigzag form.

Heat exchanger, carbon dioxide, headers, tanks, connecting elements

Description

Heat exchanger

1 is a front view showing a general heat exchanger,

2 is a cross-sectional view taken along the line A-A in FIG.

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

4 is an exploded perspective view showing a heat exchanger according to the present invention;

5 is an exploded perspective view showing a case in which the communication means in the heat exchanger of FIG.

6 is a cross-sectional view taken along the line B-B of FIG.

7 is an exploded perspective view illustrating a case in which two connection members are stacked in a heat exchanger according to the present invention;

8 and 9 are cross-sectional views showing another example of the connecting member of FIG.

10 is a perspective view showing a case where the inlet and outlet pipes are installed at both ends of the header tank in the heat exchanger according to the present invention to face the front;

11 to 16 are views showing a refrigerant circulation process according to various forms of the connection member in the heat exchanger according to the present invention.

Description of the Related Art [0002]

100: heat exchanger 101: front tube row

102: rear tube row 110: upper header tank

111: upper header 111a, 121a: tube insertion hole

111b and 121b: protruding tab 112: upper tank

112a and 122a: dome 113 and 123: fixing means

115: upper connecting member 116,126: insertion groove

117a, 117b, 127a, 127b: connecting flow path

118: baffle 119: communication means

119a, 112b: communication path 119b: bulkhead

120: lower header tank 121: lower header

122: lower tank 125: lower connecting member

130: tube 140: heat sink fin

150: end cap 160: inlet pipe

160a: inlet flow path 161: outlet pipe

161a: exit euro

The present invention relates to a heat exchanger, and more particularly, in a carbon dioxide heat exchanger, a header and a plurality of dome tanks are coupled to both ends of a plurality of rows of tubes through a connecting member having a connection flow path formed between the header and the tank. The special committee of the connecting flow passage is related to a heat exchanger that forms a baffle to enable various changes / compositions of the refrigerant flow passage, reduces the volume of the header tank, improves processability, and improves pressure / durability.

The heat exchanger is installed on the flow path of the cooling and heating system so that the heat exchange medium flowing therein absorbs heat from outside air or heats it by radiating its heat to the outside to cool and heat a predetermined space. do.

Such heat exchangers are manufactured in various ways depending on the purpose and purpose of use, such as a condenser and an evaporator using a refrigerant as a heat exchange medium, and a radiator and heater core using a cooling water as a heat exchange medium.

The conventional heat exchanger will be briefly described with reference to FIGS. 1 and 2 as follows. As shown, the heat exchanger 1 is a pair of header tanks 10 spaced apart at regular intervals to the left and right, and both ends are coupled to the pair of header tanks 10 to form two header tanks 10. A plurality of tubes 20 to communicate with each other, a heat dissipation fin 30 interposed between the tubes 20 to expand the heat transfer area to promote heat exchange, and to protect the tubes 20 and the heat dissipation fins 30. It consists of the side support 40 installed in the outermost.

Here, the header tank 10 is a header 11 formed with a plurality of tube holes 13 so that both ends of the tubes 20 can be coupled, and a passage through which the refrigerant can flow by being coupled with the header 11. It consists of a tank 12 forming a.

In addition, a baffle 60 is alternately installed in the pair of header tanks 10 so that refrigerant may flow in the zigzag form in the tubes 20.

In the heat exchanger 1, the refrigerant flows into the header tank 10 through the inlet pipe 50, and the introduced refrigerant flows outside air in a zigzag form through the tubes 20 by the baffle 60. Vigorous heat exchange is performed, and then is discharged through the outlet pipe (51).

Recently, due to problems such as global warming, heat exchangers using carbon dioxide as a refrigerant have been developed. Such carbon dioxide refrigerant has many advantages such as excellent compression efficiency and excellent heat transfer performance.

The heat exchanger for carbon dioxide is made of a structure similar to the general heat exchanger (1) described above, but has been manufactured in a structure capable of withstanding high pressure due to the operational characteristics of the carbon dioxide refrigerant.

As an example of such a heat exchanger for carbon dioxide, Japanese Patent Laid-Open No. 2003-314987 is a structure in which a refrigerant is communicated with a communication path between a groove formed in a tube side surface between an outer material and an inner material and a tank by using an inner material. , Japanese Patent Publication No. 2003-172592 is a structure to improve the durability by reducing the volume of the header by making the hole of the inner material smaller than the tube width, Japanese Patent Publication No. 2003-130584 has a brazing material on the outer peripheral surface It is a wrapping structure.

However, the conventional heat exchangers have a problem that the volume of the header tank is increased as the structure is not only complicated in structure but also poor in workability or wraps the brazing material on the outer circumferential surface.

On the other hand, in addition to the heat exchanger using a single row of tubes as described above, a heat exchanger using a plurality of rows of extruded tubes, such as Japanese Patent Publication No. 2002-372383, to uniform the temperature distribution is disclosed.

That is, the heat exchanger has a structure in which a plurality of rows of tubes are arranged in a row and a plurality of header tanks are coupled to both ends of the plurality of rows of tubes, and the header tanks of the header tanks can communicate with the plurality of rows of header tanks to form a refrigerant flow path. The communication hole is formed in a partition.

However, the heat exchanger using the plurality of rows of tubes has to be processed perpendicularly to the bulkhead of the header tank to form the communication hole, so that the press operation is difficult as well as difficult to process during the extrusion manufacturing of the header tank, and various The configuration of the refrigerant flow path was difficult, the structure was complicated, and the volume of the header tank was also increased.

An object of the present invention for solving the above-mentioned conventional problems is to couple a tank having a header and a plurality of domes at both ends of a plurality of rows of tubes, but through a connecting member having a connection flow path formed between the header and the tank, It is to provide a heat exchanger with the formation of a baffle in a specific portion to enable the various changes / configuration of the refrigerant flow path, reduce the volume of the header tank, improve processability, as well as improved pressure / durability.

The present invention for achieving the above object is the upper, lower header formed with a plurality of tube insertion holes formed in a plurality of rows to be coupled to both ends of the plurality of tubes arranged in a plurality of rows; Upper and lower tanks mounted on the upper and lower headers and having a dome protruding in an insertion direction of each tube; Upper and lower connection members interposed between the header and the tank, the insertion grooves being formed in a plurality of rows so that the tube ends of the plurality of rows are inserted and the connection flow paths connecting the insertion grooves of each row to communicate the tubes of the rows; It is formed to close the specific portion of the at least one connection passage of the connection passage of the upper, lower connection member is made of a baffle for changing the flow direction of the refrigerant so that the refrigerant flows in the zigzag form of the tube, , Tank portion other than the dome of the lower tank is characterized in that the close contact with the flat portion of the upper, lower connection member.

Hereinafter, preferred 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.

 Figure 3 is a perspective view showing a heat exchanger according to the present invention, Figure 4 is an exploded perspective view showing a heat exchanger according to the present invention, Figure 5 is an exploded perspective view showing a case where the communication means in the heat exchanger of Figure 4 is different, Figure 6 3 is a cross-sectional view taken along line BB of FIG. 3, and FIG. 7 is an exploded perspective view illustrating a case in which two connection members are stacked in a heat exchanger according to the present invention, and FIGS. 8 and 9 are cross-sectional views illustrating another example of the connection member of FIG. 7. 10 is a perspective view illustrating a case where an inlet and an outlet pipe are installed at both ends of a header tank in a heat exchanger according to the present invention so as to face the front, and FIGS. 11 to 16 illustrate various connection members of the heat exchanger according to the present invention. A diagram showing a refrigerant circulation process according to the form.

As shown, the heat exchanger 100 according to the present invention is a pair of header tanks 110 and 120 spaced apart from each other, and the headers 111 and 121 of the header tanks 110 and 120. And connecting members 115 and 125 interposed between the tanks 112 and 122, and the tubes 130 coupled to both ends of the pair of header tanks 110 and 120 and arranged in a plurality of rows. , The heat dissipation fins 140 interposed between the tubes 130 to widen the heat transfer area to promote heat exchange, and end caps 150 and inlet and outlet pipes coupled to both ends of the header tanks 110 and 120. 160 and 161.

First, the pair of header tanks 110 and 120 are upper and lower tanks 112 and 122 coupled to upper and lower headers 111 and 121 and the upper and lower headers 111 and 121. A plurality of tube insertion holes 111a and 121a are formed in a plurality of rows so that the headers 111 and 121 may be coupled to both ends of the plurality of tubes 130 arranged in a plurality of rows at predetermined intervals. At both ends in the width direction, fixing means 113 and 123 are provided to fix the tanks 112 and 122.

Here, the fixing means (113, 123) is a plurality of protruding tabs (111b) (121b) in the longitudinal direction of the header (111, 121) to fix the widthwise both ends of the tank (112, 122). Is formed.

Therefore, after the tanks 112 and 122 are seated on the headers 111 and 121, the protruding tabs 111b and 121b are bent inward to fix the tanks 112 and 122 while pressing the tanks 112 and 122. .

Meanwhile, the fixing means 113 and 123 may be formed by forming ribs (not shown) in the longitudinal direction of the headers 111 and 121 in addition to the protruding tabs 111b and 121b or brazing each member. It may be made by bonding.

In addition, the upper and lower tanks 112 and 122 are seated on the upper and lower headers 111 and 121, and are fixed by protrusion tabs 111b and 121b or ribs, which are the fixing means 113 and 123. A plurality of domes 112a and 122a protrude in a plurality of rows in the insertion direction of the respective tubes 130.

That is, the domes 112a and 122a are hemispherical and formed at the same interval as the tube 130, and an inner surface thereof is spaced apart from the end of the tube 130 by a predetermined distance. Therefore, the smooth flow of the refrigerant flowing into or out of the tube 130 is guided.
In addition, when the upper and lower tanks 112 and 122 and the upper and lower connecting members 115 and 125 to be described later are coupled, the dome 112a and 122a of the upper and lower tanks 112 and 122 are combined. Tank portion other than the) is coupled to be in close contact with the flat portion of the upper, lower connecting members 115 and 125.

Meanwhile, although only the structure of the dome 112a and 122a is formed in the upper and lower tanks 112 and 122 in the drawing, the upper and lower tanks 112 and 122 are connected members to be described below. The dome 112a and 122a may be omitted by the 115 and 125 to form a flat plate (not shown).

In addition, between the upper and lower headers 111 and 121 and the upper and lower tanks 112 and 122, upper and lower connection members 115 and 125 are interposed therebetween, and the connection member 115 is provided. The insertion grooves 116 and 126 are formed in a plurality of rows so that the ends of the plurality of rows of tubes 130 are inserted in the row, and the insertion grooves 116 and 126 of the respective rows are connected to each other so that the tubes 130 in the corresponding rows. The connecting flow paths 117a and 117b and 127a and 127b are formed to allow communication with each other.

The connection flow paths 117a and 117b and 127a and 127b communicate with the interior of the dome 112a and 122a of the tanks 112 and 122 to communicate a plurality of tubes 130 arranged in the same row.

In addition, at least one of the connection passages 117a, 117b, 127a, and 127b of the upper and lower connection members 115 and 125 has a baffle for closing a specific portion. 118 is formed to change the flow direction of the coolant so that the coolant flows through the tubes 130 in a zigzag form.

That is, according to the presence or absence of the baffle 118 or the position and the number of the baffles 118, the refrigerant passage of the heat exchanger 100 can be configured in various ways to improve the performance of the air conditioning system.

As such, the baffle 118 may be freely formed on the connection passages 117a, 117b, 127a, and 127b of the upper and lower connection members 115 and 125, and thus various refrigerant passages may be formed as shown in the drawing. Although it can be configured, only a few are shown as an example in the drawings, of course, it is possible to configure more and more various passages. In addition, a description of each refrigerant circulation process according to the connection member 115, 125 of the various forms shown in the drawings will be described below.

In addition, when the air flows from the plurality of rows of tubes 130, the front tube row 101 and the air discharge side is called the rear tube row 102, the front tube for the configuration of various refrigerant flow paths There is a need for a structure for communicating the row 101 and the rear tube row 102. Of course, the refrigerant flow path can be configured even without the front tube row 101 and the rear tube row 102 communicating with each other.

Therefore, the present invention is provided with a communication means 119 so as to communicate with each other a plurality of rows of connection passages 117a, 117b, 127a, 127b for communicating the plurality of rows of tubes 130, respectively.

The communication means 119 has a communication path 119a communicating with the plurality of rows of connection passages 117a, 117b, 127a, and 127b to any one of the upper and lower connection members 115 and 125. In addition, partition walls 119b are formed between the insertion grooves 116 and 126 to close the connection flow paths 117a and 117b and 127a and 127b.

In addition, as another embodiment, the communication means 119 may be formed by forming a communication path 112b for communicating the dome 112a of the plurality of rows to one of the upper and lower tanks 112 and 122. have.

Here, the communication paths (119a) (112b) may be formed in a different size or width for each location to improve the heat exchange performance in consideration of the refrigerant distribution, and also in the drawing the communication paths (119a) (112b). Is connected to a plurality of rows of connection passages 117a and 117b (127a and 127b) or a plurality of rows of domes 112a in the width direction, respectively, but the plurality of rows of connection passages 117a and 117b (127a and 127b) or a plurality of rows are connected. In the dome 112a, a separate communication path (not shown) for communicating the insertion grooves 116 and 126 or the dome 112a in each row in the longitudinal direction may reduce the refrigerant flow resistance.

The communication means 119 may be formed only in a predetermined region of one side, based on the baffle 118 of the upper connection member 115, as shown in the figure, may be formed on the entire lower connection member 125. Therefore, the refrigerant flowing through the rear tube row 102 is returned through the communication means 119 to flow to the front tube row 101, or the refrigerant flowing through the front tube row 101 is The refrigerant flows through the communication means 119 and flows into the rear tube row 102.

 Meanwhile, as illustrated in FIGS. 7 to 9, a plurality of connection members 115 and 125 are provided between the headers 111 and 121 and the tanks 112 and 122 (two in the drawing). It may be configured by stacking.

That is, the connecting members 115 and 125 contacting the tanks 112 and 122 of the plurality of connecting members 115 and 125 stacked in a plurality have a larger surface area than the other connecting members 115 and 125. It is formed by closing the connection flow paths (117a, 117b) (127a, 127b). Accordingly, only the insertion grooves 116 and 126 are formed in the connecting members 115 and 125 contacting the tanks 112 and 122 without the connecting passages 117a and 117b and 127a and 127b. As the area where the surfaces 115 and 125 are in surface contact with the tanks 112 and 122 increases, the internal pressure and durability may be further improved.

In addition, when the plurality of connecting members 115 and 125 are stacked as described above, the communication means 119 may be selectively formed on the plurality of connecting members 115 and 125.

8 illustrates a case in which two connection members 115 of the same structure having the insertion grooves 116 and the connection passages 117a and 117b are stacked, in which case the connection passages 117a and 117b are formed. As it expands, there is an advantage of reducing the pressure drop on the refrigerant side.

FIG. 9 forms different sizes of connecting flow paths 117a and 117b respectively formed in the connecting members 115 to be stacked to appropriately form the size of the connecting flow paths 117a and 117b according to the portion where the refrigerant is biased. The refrigerant distribution can be improved.

The end caps 150 are coupled to both ends of the upper and lower header tanks 110 and 120, respectively, and the end caps 150 are provided with inlet and outlet pipes 160 and 161.

The positions of the inlet and outlet pipes 160 and 161 are determined by how the refrigerant passage is configured. In the present invention, various refrigerant passages are configured according to the formation position of the baffle 118 as shown in the drawing. The inlet and outlet pipes 160 and 161 are also installed at various positions.

At this time, the inlet flow path (160a) and the outlet pipe (161) for communicating with the inlet passage (160) and the outlet pipe (161) on the end side of the upper and lower connection members (115, 125) 161a are formed respectively.

Meanwhile, in the present invention, only the end caps 150 are installed at both ends of the upper and lower header tanks 110 and 120, but each member (header) configuring the header tanks 110 and 120 is described. Since the connection member and the tank are joined to each other, the end cap 150 is installed only where the inlet and outlet pipes 160 and 161 are to be installed for the inlet and outlet of the refrigerant, and the end caps are located elsewhere. 150 may be omitted.

And, as shown in Figure 10, omitting all the end cap 150, and selectively coupled the inlet, outlet pipes 160, 161 directly to both ends of the upper, lower header tanks 110, 120, but the front Can be installed facing.

Of course, the inlet and outlet pipes 160 and 161 may be installed in selective communication with the connection passages 117a and 117b of the connection member 115.

In addition, although the inlet and outlet pipes 160 and 161 are installed at both ends of the header tank 110 in FIG. 10, the inlet and outlet pipes 160 and 161 are not provided at both ends of the header tank 110. It may be installed freely at a specific position between the both ends of the header tank (110).

As described above, the refrigerant circulation process of the heat exchanger according to the present invention is as follows.

Prior to the description, the heat exchanger 100 of the present invention may be configured with various refrigerant passages as shown in FIGS. 11 to 15, depending on the installation position of the baffle 118 and the communication means 119. Therefore, the present invention will be described in detail with respect to the refrigerant circulation process in Figure 11, which is a basic refrigerant flow path will be described briefly.

First, FIG. 11 illustrates a baffle 118 formed at substantially center portions of a plurality of rows of connection flow paths 117a and 117b formed in the upper connection member 115, respectively, and in one region of the baffle 118. The communication means 119 is formed. At this time, the inlet and outlet pipes 160 and 161 are all installed at one end of the upper header tank 110.

Therefore, when the refrigerant is supplied through the inlet pipe 160, the refrigerant is connected to the rear connection passage 117a communicating with the rear tube row 102 through the inlet passage 160a of the upper connection member 115. Inflow. At this time, the refrigerant flows only to the position where the baffle 118 of the rear connection flow path 117a is formed, and each tube 130 of the rear tube row 102 through the inside of the plurality of rear side domes 112a of the upper tank 112. Supplied to the end.

Here, the refrigerant supplied to each tube 130 of the rear tube row 102 is supplied only to the tubes 130 located on one side of the baffle 118.

Subsequently, the refrigerant flows along the respective tubes 130 of the rear tube row 102, and then through the rear dome 122 a of the lower tank 122, the rear connection flow path of the lower connection member 125. It flows to 127a.

The refrigerant flowing into the rear connection flow path 127a of the lower connection member 125 is U-turned here and this time flows along the tubes 130 located on the other side with respect to the baffle 118, and then the upper connection. It flows into the rear connection flow path 117a of the member 115.

The refrigerant introduced into the rear connection channel 117a of the upper connection member 115 flows to the front connection channel 117b of the upper connection member 115 through the communication means 119. The coolant flows along the tubes 130 positioned on one side of the front tube row 101 with respect to the baffle 118 and flows into the front connection channel 127b of the lower connection member 125.

The refrigerant flowing into the front connection passage 127b of the lower connection member 125 is U-turned here and this time flows along the tubes 130 located on the other side with respect to the baffle 118, and then the upper connection member. It flows into the front side connection flow path 117b of 115.

The refrigerant introduced into the front side connection passage 117b of the upper connection member 115 is discharged to the outlet pipe 161 through the outlet passage 161a formed at the end side of the connection member 115, thereby exchanging heat exchanger 100. The refrigerant circulation process in) is completed.

FIG. 12 is provided with an upper connecting member 115 having the same structure as the upper connecting member 115 of FIG. 11, and the lower connecting member 125 has a front connecting passage among a plurality of rows of connecting passages 127a and 127b. The baffle 118 is further formed at 127b.

Accordingly, the same refrigerant circulation process as in FIG. 11 is provided, but the upper and lower portions of the refrigerant flowing through the front tube row 101 by the baffles 118 formed in the front connection passage 127b of the lower connection member 125 are provided. Flowing water will increase.

Accordingly, while the outlet position of the refrigerant is changed, the outlet pipe 161 is installed at one end of the lower header tank 120.

FIG. 13 illustrates that a baffle 118 is formed in the front side connection passage 117b among the plurality of rows of the connection passages 117a and 117b of the upper connection member 115, and the lower connection member 125 has a whole area. The communication means 119 is formed.

Therefore, the refrigerant introduced through the inlet pipe 160 flows by u-turning the tubes 130 of the front and rear tube rows 101 and 102 positioned on one side of the baffle 118, and then the baffle 118. On the other hand, the front and rear tube rows 101 and 102 located on the other side are flowed again by u-tubes 130 and then discharged to the outlet pipe 161.

Accordingly, the inlet and outlet pipes 160 and 161 are installed at both ends of the upper header tank 110, respectively.

FIG. 14 shows a baffle 118 formed in a plurality of rows of connection passages 117a and 117b of the upper connection member 115, respectively, and a plurality of rows of connection passages 127a and 127b of the lower connection member 125. Edo baffles 118 are formed, respectively, wherein the baffles 118 formed on the upper and lower connection members 115 and 125 are alternately formed.

Therefore, the refrigerant introduced through the inlet pipe 160 flows through the tubes 130 of the front and rear tube rows 101 and 102 simultaneously, wherein the tubes 130 are zigzag by the baffle 118. As it flows, it is discharged to the outlet pipe 161.

Accordingly, the inlet pipe 160 is installed at one end of the upper header tank 110, and the outlet pipe 161 is at one end of the lower header tank 120 opposite to the inlet pipe 160. Will be installed.

FIG. 15 has the same structure as the upper and lower connection members 115 and 125 of FIG. 14, except that the position of the baffle 118 is more densely formed.

Therefore, the same refrigerant circulation process as in FIG. 14 is provided, but the up and down flows of the refrigerant flowing simultaneously through the front and rear tube rows 101 and 102 are increased by the baffle 118 formed more densely.

Accordingly, the inlet and outlet pipes 160 and 161 are installed at both ends of the upper header tank 110, respectively.

16, baffles 118 are formed in the plurality of rows of connection passages 117a and 117b of the upper connection member 115, respectively, and the plurality of rows of the connection passages 127a and 127b of the lower connection member 125 are formed. Edo baffles 118 were formed, respectively, in which the baffles 118 are alternately formed in the front connection passages 117b and 127b and the rear connection passages 117a and 127a when viewed from the air flow direction. to be.

That is, FIG. 16 has the same refrigerant circulation process as in FIG. 15, but the baffles 118 are alternately formed in the front side connection passages 117b and 127b and the rear side connection passages 117a and 127a. Refrigerant flow paths formed in the tube rows 101 and 102 overlap.

Accordingly, the inlet and outlet pipes 160 and 161 are installed at both ends of the upper header tank 110, respectively.

On the other hand, although the baffles 118 are formed in the same number of staples in the front connection passage (117b, 127b) and the rear connection passage (117a, 127a), respectively, in addition to the baffle 118 ) May be alternately formed in the front connection passages 117b and 127b and the rear connection passages 117a and 127a in different numbers.

As described above, the refrigerant flow path of the heat exchanger 100 according to the present invention is merely an example, and various modifications of the baffle 118 or the communication means 119 formed on the connection members 115 and 125 are provided. Through this, more and more refrigerant channels can be configured.

In addition, in the present invention, only the case in which the tube 130 is arranged in two rows has been described, but of course, it can be arranged in more rows.

According to the present invention, the header and the plurality of dome tanks are coupled to both ends of a plurality of rows of tubes through a connecting member formed with a connection flow path between the header and the tank, and a specific portion of the connection flow path and baffle and communication By forming the means, it is possible to variously change / configure the refrigerant flow path, the volume of the header tank is reduced, and the workability is also improved.

In addition, by increasing the bonding area between the header and the dome tank via a connecting member, the pressure resistance / durability is improved.

In addition, by forming the tube in a plurality of rows and by simply connecting the connection flow path of the connecting member to the communication means to communicate the tube of the plurality of rows, the temperature deviation of the heat exchanger is reduced by the smooth flow of the refrigerant, and the configuration is simplified. The manufacturing process and cost are reduced.

Claims (14)

Upper and lower headers 111 and 121 having a plurality of tube insertion holes 111a and 121a formed in a plurality of rows to be coupled to both ends of the plurality of tubes 130 arranged in a plurality of rows; Upper and lower tanks 112 and 122 seated on the upper and lower headers 111 and 121 and protruding from the dome 112a and 122a in the insertion direction of each tube 130; The insertion grooves 116 and 126 are interposed between the headers 111 and 121 and the tanks 112 and 122 so that end portions of the tubes 130 are inserted into a plurality of rows. Upper and lower connection members 115 and 125 formed with connection passages 117a and 117b and 127a and 127b connecting the insertion grooves 116 and 126 to communicate the tubes 130 in the row;  The refrigerant is formed to close a specific portion of at least one or more connection passages 117a, 117b, 127a, 127b of the connection passages 117a, 117b, 127a, 127b of the upper and lower connection members 115, 125. Is made of a baffle 118 for switching the flow direction of the refrigerant so that the tube 130 can flow in a zigzag form, Heat exchanger characterized in that the tank portion other than the dome (112a, 122a) of the upper and lower tanks 112 and 122 are in close contact with the flat portion of the upper and lower connection members (115, 125). . The method of claim 1, Heat exchanger characterized in that the upper and lower headers (111) (121) is provided with fixing means (113) (123) to fix the upper and lower tanks (112, 122). The method of claim 2, The fixing means 113 and 123 form a plurality of protruding tabs 111b and 121b in the longitudinal direction of the headers 111 and 121 to fix both ends of the tanks 112 and 122. Heat exchanger, characterized in that made. The method of claim 1, A heat exchanger, characterized in that the communication means (119) is further provided to communicate with each other the flow paths (117a, 117b) (127a, 127b) for communicating the plurality of rows of tubes (130), respectively. The method of claim 4, wherein The communication means 119 has a communication path 119a for communicating the plurality of rows of connection passages 117a, 117b, 127a, 127b with one of the upper and lower connection members 115, 125 is formed. In addition, a heat exchanger, characterized in that formed between the insertion grooves (116, 126) partition wall (119b) for closing the connecting flow paths (117a, 117b) (127a, 127b). The method of claim 4, wherein The communication means (119) is a heat exchanger, characterized in that the communication path (112b) is formed in any one of the upper, lower tanks (112) (122) to communicate with each other the dome (112a) of the plurality of rows. The method according to claim 5 or 6, The communication path (119a) (112b) is a heat exchanger, characterized in that formed in a different size for each location to improve the refrigerant distribution. The method of claim 1, The connection member 115, 125 is a heat exchanger, characterized in that a plurality of stacked configuration. The method of claim 8, The connecting members 115 and 125 contacting the tanks 112 and 122 of the stacked connecting members 115 and 125 have a larger surface area than the other connecting members 115 and 125. Heat exchanger, characterized in that formed by closing 117a, 117b (127a, 127b). The method of claim 1, End caps 150 are coupled to both ends of the upper and lower headers 111 and 121 and the tanks 112 and 122, and the inlet and outlet pipes 160 and 161 are selectively connected to the end caps 150. Heat exchanger, characterized in that formed as. 11. The method of claim 10, The inlet and outlet passages 160a and 161a communicate with the inlet and outlet pipes 160 and 161 and the connection passages 117a and 117b and 127a and 127b, respectively, on the end sides of the connection members 115 and 125, respectively. Heat exchanger characterized in that is formed. The method of claim 1, Heat exchangers, characterized in that the inlet and outlet pipes (160) (161) are selectively formed at both ends of the upper and lower headers (111) (121) and the tank (112) (122) to face the front. The method of claim 1, The baffle (118) is a heat exchanger, characterized in that the cross-linking formed in the front connection passage (117b, 127b) and the rear connection passage (117a, 127a) of the upper and lower connection members (115) (125). The method of claim 13, The baffle (118) is a heat exchanger, characterized in that formed in the front connection passage (117b, 127b) and the rear connection passage (117a, 127a) different numbers respectively.

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