KR101081968B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, and more particularly, by constructing a header pipe by stacking a plurality of laminates in a heat exchanger for carbon dioxide to improve durability and pressure resistance of the header pipe and to freely adjust the length of the header pipe. It relates to a heat exchanger that can reduce the volume of.

Accordingly, the present invention is a pair of header pipes (110) formed by stacking a plurality of laminates 111 having a passage 112 therein and spaced apart from each other at regular intervals; A plurality of tubes 120 having both ends fixed / installed between the plurality of laminates 111 to communicate the pair of header pipes 110; The cladding member 130 is interposed between the plurality of laminates 111 to bond the tube 120 and the laminates 111.

Heat exchanger, carbon dioxide, header pipe, laminate, clad material, tube

Description

Heat exchanger

1 is a front view showing a conventional heat exchanger,

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

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

4 is a partial perspective view showing a state in which the header pipe is disassembled in the heat exchanger according to the first embodiment of the present invention;

5 is a front view showing a heat exchanger according to a second embodiment of the present invention;

6 is a partial perspective view showing a state in which the header pipe is disassembled in the heat exchanger according to the second embodiment of the present invention;

7 is a front view of a heat exchanger showing a case in which the guide structure of the clad material is modified in the heat exchanger according to the second embodiment of the present invention;

8 is a partial perspective view illustrating a state in which the header pipe of FIG. 7 is disassembled;

9 is a front view showing a heat exchanger according to a third embodiment of the present invention;

10 is a partial perspective view illustrating a state in which a header pipe is disassembled in a heat exchanger according to a third embodiment of the present invention;

FIG. 11 is a cross-sectional view taken along the line B-B in FIG. 10. FIG.

Description of the Related Art [0002]                 

100,200: heat exchanger 110,210: header pipe

111,111a, 211,211a: Laminates 112,212: Passages

120,220: tube 130,230: cladding

131: tube hole 132: guide

140,240: Heat dissipation fins 150,250: Side support

160,260: inlet pipe 161,261: outlet pipe

170: baffle

213: coupling portion 221: through hole

222: Euro 235: clad ring

The present invention relates to a heat exchanger, and more particularly, by constructing a header pipe by stacking a plurality of laminates in a heat exchanger for carbon dioxide to improve durability and pressure resistance of the header pipe and to freely adjust the length of the header pipe. It relates to a heat exchanger that can reduce the volume of.

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 pipes 10 spaced apart at regular intervals to the left and right, and both ends are coupled to the pair of header pipes 10 to form two header pipes 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 pipe 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 pipes 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 pipe 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 the same structure as the general heat exchanger (1) described above, but has been manufactured and used in a thicker thickness than the general heat exchanger (1) due to its operational characteristics that must withstand high pressure.

However, there is a problem in that the weight is increased by manufacturing a thick material so as to withstand only a high operating pressure, thereby increasing the manufacturing cost.

In addition, since the tank 12 is a coupling structure that surrounds the header 11 from the outside, the entire volume of the header pipe 10 increases, and stress is concentrated at the coupling portion between the header 11 and the tank 12, thereby increasing durability. There was also a problem of deterioration.

In addition, in order to improve durability of the header pipe 10, a separate reinforcing material is inserted into the header pipe 10 to increase the brazing area, thereby improving durability. In this case, manufacturing should be performed by using a separate reinforcing material. There was a problem of increased cost.

An object of the present invention for solving the above-described problems is to improve the durability and pressure resistance of the header pipe and to freely adjust the length of the header pipe by stacking the header pipe in a plurality of laminated materials in the heat exchanger for carbon dioxide It is to provide a heat exchanger that can reduce the volume of the header pipe.

The present invention for achieving the above object is a pair of header pipes spaced apart from each other by a predetermined interval and formed by stacking a plurality of laminated materials having a passage therein; A plurality of tubes fixedly installed at both ends of the plurality of laminates to communicate the pair of header pipes; The tube hole is open at one side so that the end of the tube is inserted, and the clad material is interposed between the plurality of laminates to bond the tube and the laminate.

In addition, a pair of header pipes are formed by stacking a plurality of laminated materials having a coupling portion, a part of which is separated from each other at regular intervals and the inner peripheral surface of the passage; Longitudinal both ends are interposed between each of the plurality of laminates, and both ends of the laminates are installed to protrude outward from the laminate by passing between the laminates, and also to communicate with internal passages of the laminates. A plurality of tubes in which a through hole is formed at a corresponding position to communicate the pair of header pipes; Clad material is inserted into the through hole of each tube through the coupling portion of the laminated material is installed in close contact with the inner circumferential surface of the through hole in the both end side direction of the tube to close the inner channel of the tube in both end side direction of the tube; It is characterized in that it comprises a clad ring interposed between the plurality of laminated materials and the tube to bond the tube and the laminated material.

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.

3 is a front view illustrating a heat exchanger according to a first embodiment of the present invention, and FIG. 4 is a partial perspective view illustrating a state in which the header pipe is disassembled in the heat exchanger according to the first embodiment of the present invention.

As shown, the heat exchanger 100 according to the first embodiment of the present invention is largely composed of a pair of header pipes 110, a tube 120, and a cladding material 130.

First, the pair of header pipes 110 are installed to be spaced apart from each other so as to be coupled to both ends of the tube 120, a plurality of stacking passage 112 is formed therein to move the heat exchange medium therein. It is made by stacking the ashes 111.

Here, the laminate 111 is preferably formed in a cylindrical shape, in addition to this, of course, it is also possible to have a variety of shapes depending on the purpose of use.

In addition, inlet and outlet pipes 160 and 161 are formed in the header pipe 110 to allow the heat exchange medium to flow in and out.

In addition, although it is preferable to stack the laminated material 111a in a sealed structure at both ends of the header pipe 110 so as to seal both ends thereof, a separate end cap (not shown) may be provided.

In addition, a baffle 170 is formed inside the pair of header pipes 110 to guide the heat exchange medium introduced through the inlet pipe 160 to flow the tubes 120 in a zigzag form. The 170 is alternately installed in the middle of a plurality of laminated materials 111 stacked to form the header pipe 110, and such a baffle 170 opens the inner passage 112 of the laminated material 111. It is preferably formed integrally to close.

Therefore, the laminate 111 may be used as an end cap when the inner passage 112 is closed and laminated at both ends of the header pipe 110, and when the laminate is stacked in the middle of the header pipe 110, the baffle ( 170).

In addition, when the number of the laminate 111 is simply changed, the entire length of the header pipe 110 may be freely adjusted.

In addition, since the inner diameter of the laminate 111 can be reduced, the pressure resistance and durability can be further improved.                     

In addition, both ends of the tube 120 are fixedly installed between the plurality of laminates 111 to communicate the pair of header pipes 110.

Here, a flow path (not shown) is formed in the tube 120 to allow the heat exchange medium to flow. The flow path may be formed as a single flow path or may be formed as one or more multi flow paths.

In addition, it is preferable that the outer shape of the tube 120 is formed to be close to a quadrangular so as to be in surface contact with the laminate 111.

In addition, a plurality of heat dissipation fins 140 are disposed between the plurality of tubes 120 to promote heat exchange.

In addition, the cladding material 130 is interposed between the plurality of laminated materials 111 to bond the tube 120 and the laminated materials 111.

Here, the cladding member 130 is formed with a tube hole 131 open at one side such that an end of the tube 120 is inserted.

On the other hand, the outer side of the tube 120 and the heat dissipation fin 140 may be provided with a side support 150 to protect them. In this case, both side ends of the side support 150 are installed between the laminated materials 111a stacked on both end sides of the header pipe 110 to be fixed / coupled.

Therefore, the heat exchanger 100 stacks a plurality of laminates 111 to form a header pipe 110, and at the same time between both ends of the tube 120 between the laminates 111 Temporary assembly is performed via the cladding material 130. When brazing in the pre-assembled state, the surface of the cladding material 130 is melted to bond the laminate 111 and the tube 120 to each other.

At this time, the cladding material 130 is melted and flows into the surface where the laminated material 111 and the tube 120 contact each other, thereby forming a bonding process.

Of course, it will be natural to braze after installing the side support 150 at the outermost part through the heat dissipation fin 140 between the tubes 120 before brazing.

5 is a front view showing a heat exchanger according to a second embodiment of the present invention, FIG. 6 is a partial perspective view showing a state in which the header pipe is disassembled in the heat exchanger according to the second embodiment of the present invention, and FIG. The heat exchanger front view which shows the case where the guide structure of the cladding material was deformed in the heat exchanger which concerns on 2nd Example of FIG. 8, and FIG. 8 is a partial perspective view which shows the state which decomposed the header pipe in FIG. Only parts that are different from the description will be omitted.

As shown, in the second embodiment a plurality of surrounding the outer surface of the laminated material 111 to facilitate the stacking of the laminated material 111 on the outer periphery of the clad material 130 and to improve the pressure resistance The guide 132 is formed.

That is, since the lamination material 111 is simply laminated inside the guide 132 of the cladding material 130 when the lamination material 111 is laminated, the lamination is easy, and after the brazing, the cladding material 130 As the surface of the guide 132 is melted and bonded to the outer surface of the laminate 111, durability and pressure resistance are improved.

In addition, the guide 132 of the cladding member 130 shown in FIGS. 5 and 6 is formed to have a length that can wrap one of the laminated members 111, but the cladding member 130 shown in FIGS. Guide 132 is formed to lengthen the length of the guide 132 to wrap the two laminated materials (111).

At this time, the guide 132 of the cladding member 130 is preferably formed to cross the guide 132 of the other cladding member 130 to avoid interference.

In this way, the cladding member 130 having the guide 132 is formed in two kinds so as not to interfere with each other, it is possible to easily align and confirm the tube hole 131 formed in the cladding member 130.

In addition, since the guide 132 of the cladding member 130 is formed to be bonded to surround the outer surface of the two laminates 111, the guide 132 wraps around the connecting portion of the two laminates 111. This will further improve the durability of this connection.

In addition, in the drawings, the length of the guide 132 of the cladding member 130 does not reach the guide 132 of the next cladding member 130, but increases the length to the lower end of the guide 132 of the next cladding member 130. When configured to be in contact with each other, the pressure resistance can be further improved.

9 is a front view showing a heat exchanger according to a third embodiment of the present invention, FIG. 10 is a partial perspective view showing a state in which the header pipe is disassembled in the heat exchanger according to the third embodiment of the present invention, and FIG. As a cross-sectional view taken along line BB in FIG. 1, only portions different from those in the above-described first and second embodiments will be described, and repeated descriptions will be omitted.

As shown, the third embodiment is to configure a header pipe 210 by stacking a plurality of laminates 211 as in the first and second embodiments described above, except that the header pipe 210 and the tube 220. Some changes have been made to the coupling structure of.

That is, the heat exchanger 200 according to the third embodiment has a plurality of laminates 211 having coupling portions 213 partially spaced apart from each other and partially cut in a semicircular shape on the inner circumferential surface of the passage 212. A pair of header pipes 210 formed by laminating a plurality of laminates, and both ends in the longitudinal direction are installed between the plurality of laminates 211, respectively, and both ends pass between the laminates 211. A through hole 221 is formed at a position corresponding to the laminate 211 so as to protrude outward from the 211 and communicate with the inner passages 212 of the respective laminates 211. A plurality of tubes 220 communicating the pair of header pipes 210 and arc-shaped clads inserted into the coupling portions 213 of the laminated stack 211 to close both end sides of the tubes 220. The material 230 is interposed between the material 230 and the plurality of laminated materials 211 and the tube 220. And a clad ring 235 for joining the ashes 211.

In addition, a heat dissipation fin 240 is disposed between the tubes 220 to promote heat exchange, and a side support 250 is installed at the outermost side to protect the tube 220 and the heat dissipation fin 240.

In addition, both ends of the header pipe 210 are sealed by stacking the laminated material 211a having a sealed structure.

On the other hand, the semi-circular coupling portion 213 of the laminate 211 is formed to face the outer direction so that the arc-shaped cladding member 230 is inserted into the coupling portion 213 both ends of the tube 220 Will be closed.

Thus, the third embodiment is installed so that the end of the tube 220 passes between the stacking material 211 of the header pipe 210, so that the laminated material 211 and the laminated material 211 on the plane of the tube 220 A through hole 221 was formed at a corresponding position to communicate with the internal passage 212 of the laminate 211.

That is, when the through hole 221 is formed on the plane of the tube 220, the inner passage 222 of the tube 220 and the inner passage 212 of the laminate 211 communicate with each other. The header pipe 210 is to communicate.

At this time, in order to close both ends of the tube 220, an arc-shaped cladding member 230 is inserted into the coupling portion 213 of the laminate 211 to close both ends of the tube 220.
That is, the cladding member 230 is inserted into the through hole 221 of each tube 220 through the coupling portions 213 of the respective laminates 211, and both end sides of the tube 220 are installed. It is installed to be in close contact with the inner circumferential surface of the through-hole 221 in the direction to close the inner channel 222 of the tube 220 in the opposite direction of the tube 220.

Therefore, when the components are pre-assembled and brazed, the clad ring 235 is completely melted to bond the laminate 211 and the tube 220, and the clad material 230 partially has a surface. Melt is bonded to the coupling portion 213 of the laminated material 211 and at the same time bonded to the inner peripheral surface of the through hole 221 formed in the tube 220 to completely close both ends of the tube 220.

In addition, the cladding member 230 not only closes both ends of the tube 220, but also is joined to connect the interiors of the plurality of laminates 211, thereby improving durability and pressure resistance of the header pipe 210.

Thus, in the third embodiment, circular through-holes 221 are formed at both sides of the tube 220, and the flow path through which the heat exchange medium can flow is formed using the inner area thereof. It can reduce the pressure and improve the pressure resistance.                     

As described above, the present invention forms a header pipe (110, 210) by stacking a plurality of laminate (111, 211) and the tube 120 (between the laminate (111, 211) Although only the case where the configuration in which the 220 is installed is applied to the heat exchanger 100 and 200 for carbon dioxide has been described, the present invention is not limited thereto and may be applied to all heat exchangers in addition to the heat exchanger 100 and 200 for carbon dioxide. to be.

According to the present invention described above, the header pipe is formed by laminating a plurality of laminates, and a tube and a clad material are joined between the laminates and joined to each other, thereby improving durability and pressure resistance of the header pipe and freely adjusting the length of the header pipe. Can be.

In addition, the end of the tube is installed between the plurality of laminated materials to pass through the tube formed in the through hole communicating with the inner passage of the laminated material to form a flow path through which the heat exchange medium can flow using the inner area The configuration can reduce the volume of the header pipe and improve the pressure resistance.

Claims (6)

A pair of header pipes 110 spaced apart from each other by a predetermined interval and formed by stacking a plurality of laminates 111 having passages 112 therein; A plurality of tubes 120 fixedly installed at both ends of the plurality of laminates 111 to communicate the pair of header pipes 110; A tube hole 131 having one side open to insert an end of the tube 120 is formed and interposed between the plurality of laminates 111 to join the tube 120 and the laminates 111. Ashes (130) Heat exchanger characterized in that consisting of. delete The method of claim 1, A plurality of guides 132 are formed on the outer circumference of the cladding material 130 to surround the outer surface of the stacking material 111 to facilitate lamination of the stacking material 111 and to improve pressure resistance. Heat exchanger made. The method of claim 3, wherein The guide 132 of the cladding member 130 is alternately formed with the guide 132 of the neighboring cladding member 130 so that interference does not occur. A pair of header pipes 210 formed by stacking a plurality of laminates 211 having a coupling portion 213 partially cut off at a predetermined interval and spaced apart from each other at an inner circumferential surface of the passage 212; Longitudinal both ends are interposed between the plurality of laminates 211, respectively, and both ends are installed to protrude outward from the laminate 211 by passing between the laminates 211 and each of the laminates. Through-holes 221 are formed at a position corresponding to the stack 211 so as to communicate with the inner passage 212 of the ash 211, a plurality of tubes 220 to communicate the pair of header pipes 210 ); Inserted into the through hole 221 of each tube 220 through the coupling portion 213 of each laminated material 211, but close contact with the inner circumferential surface of the through hole 221 in the direction of both ends of the tube 220 Clad material 230 is installed so as to close the tube 220, the inner flow path 222 of the both ends of the tube 220 side direction; Heat exchanger characterized in that it comprises a clad ring (235) which is interposed between the plurality of laminated material (211) and the tube 220 to join the tube 220 and the laminated material (211). The method according to claim 1 or 5, The laminate (111) (211) is a heat exchanger, characterized in that formed in a cylindrical shape.

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