WO2017023027A1

WO2017023027A1 - Heat exchanger

Info

Publication number: WO2017023027A1
Application number: PCT/KR2016/008336
Authority: WO
Inventors: 이응열; 정승모; 김주혁; 박태균
Original assignee: 엘지전자 주식회사
Priority date: 2015-07-31
Filing date: 2016-07-29
Publication date: 2017-02-09

Abstract

The present invention relates to a heat exchanger comprising: flat tubes formed of a microchannel type; and first and second fins positioned at the top and bottom of the flat tubes so as to conduct the heat of the flat tubes, wherein the first and second fins are respectively provided with first and second condensate water discharge pins at the top and bottom, the second condensate water discharge pins of the first fins and the first condensate water discharge pins of the second fins come into contact, and the second condensate water discharge pins of the first fins and the first condensate water discharge pins of the second fins are disposed in a line with respect to the vertical direction, thereby having the advantage of quickly transferring condensate water formed at the top to the bottom.

Description

heat exchanger

The present invention relates to a heat exchanger, and more particularly to a heat exchanger that is easy to discharge condensate when used as an evaporator.

In general, the heat exchanger may be used as a condenser or evaporator in a refrigeration cycle device consisting of a compressor, a condenser, an expansion device, and an evaporator.

In addition, the heat exchanger is installed in a vehicle, a refrigerator, etc. to exchange the refrigerant with air.

The heat exchanger may be classified into a fin tube type heat exchanger and a micro channel heat exchanger according to the structure.

Finned tube heat exchangers are made of copper, and micro-channel heat exchangers are made of aluminum.

The microchannel heat exchanger is more efficient than the fin tube type heat exchanger because a fine flow path is formed therein.

Fin tube type heat exchanger is easy to manufacture because it is a method of welding the fin and tube, but because the micro-channel heat exchanger is manufactured by brazing into the furnace, the initial investment costs due to the manufacturing has a big disadvantage.

1 is a cross-sectional view showing a micro-channel heat exchanger according to the prior art.

The micro-channel heat exchanger according to the prior art is disposed between a plurality of flat tubes (1) in which a minute flow path is excised inside, and each flat tube (1), and connects each flat tube (1) to conduct heat. And a header (3) (4) to be assembled to one side and the other side of the flat tube (1).

The pin 2 is coupled to the flat tube 1 disposed on both sides. The pins 2 are arranged in a zigzag form in the longitudinal direction of the flat tube 1.

The conventional micro-channel heat exchanger manufactured as described above has a very high heat exchange efficiency between the refrigerant and the air compared to the fin tube heat exchanger, but when used as an evaporator, it is difficult to discharge the generated condensate.

Conventional micro-channel heat exchanger has a problem in reducing the thermal efficiency of the evaporator because the condensate generated when used as the evaporator is not discharged, and the generated condensate is frozen between the fins.

[Preceding technical literature]

[Patent Documents]

Republic of Korea Patent Registration 10-0765557

The problem to be solved by the present invention is to provide a microchannel heat exchanger in which condensate is easily discharged.

An object of the present invention is to provide a micro-channel heat exchanger that can be produced by a pin roll method.

An object of the present invention is to provide a microchannel heat exchanger capable of easily communicating a fluid in a direction perpendicular to the flat tube longitudinal direction and the flat tube longitudinal direction.

An object of the present invention is to provide a micro-channel heat exchanger having a structure that can easily flow the condensed water generated in the fin disposed above the flow to the fin below.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

The present invention is formed in a micro-channel type and horizontally flat tube; And a first fin disposed above the flat tube and conducting heat of the flat tube. In the heat exchanger comprising: a second fin disposed under the flat tube, the second fin for conducting heat of the flat tube,

The first fin may include a first fin part disposed on the flat tube and intersecting the flat tube; A second fin portion disposed on the flat tube and intersecting the flat tube and spaced apart from the first fin portion; A first bent portion that is bent at the first and second pin portions and connects upper sides of the first and second pin portions; A second bent portion bent from the first pin portion and the second pin portion, and connecting a lower side of the first pin portion and the second pin portion; A flow space formed between the first fin portion and the second fin portion and spaced apart from each other and formed in an opening and closing direction; A first condensate discharge pin formed by cutting the first bent portion to form a first condensate discharge hole and being bent upward from the first bent portion; And a second condensate discharge pin formed by cutting the second bent portion to form a second condensate discharge hole and being bent downward from the second bent portion.

The second fin may include: a first fin part disposed on the flat tube and intersecting the flat tube; A second fin portion disposed on the flat tube and intersecting the flat tube and spaced apart from the first fin portion; A first bent portion that is bent at the first and second pin portions and connects upper sides of the first and second pin portions; A second bent portion bent from the first pin portion and the second pin portion, and connecting a lower side of the first pin portion and the second pin portion; A flow space formed between the first fin portion and the second fin portion and spaced apart from each other and formed in an opening and closing direction; A first condensate discharge pin formed by cutting the first bent portion to form a first condensate discharge hole and being bent upward from the first bent portion; And a second condensate discharge pin formed by cutting the second bent portion to form a second condensate discharge hole and being bent downward from the second bent portion.

The second condensate discharge pin of the first fin and the first condensate discharge pin of the second fin may be disposed in contact with each other.

The second condensate discharge pin of the first fin and the first condensate discharge pin of the second fin may be arranged to be spaced apart from each other.

The second condensate discharge hole may be disposed below the flow space of the first fin.

The first condensate discharge hole and the second condensate discharge hole may be disposed outside the flat tube.

The first condensate discharge pin and the first condensate discharge hole may be formed on the front side and the rear side of the flat tube, respectively.

The second condensate discharge pin and the second condensate discharge hole may be formed on the front side and the rear side of the flat tube, respectively.

A plurality of second condensate discharge pins forming the second condensate discharge hole of the first fin portion is formed, a plurality of first condensate discharge pins of the second fin portion in contact with any one of the second condensate discharge pins formed Can be arranged.

A plurality of first condensate discharge pins forming the first condensate discharge hole of the second fin portion is formed, a plurality of second condensate discharge pins of the first fin portion is in contact with any one of the first condensate discharge pins formed in plurality Can be arranged.

A plurality of second condensate discharge pins forming the second condensate discharge hole of the first fin portion is formed, a plurality of first condensate discharge pins forming the first condensate discharge hole of the second fin portion is formed a plurality of, The second condensate discharge pins may be disposed in contact with a plurality of the first condensate discharge pins, respectively.

When the first condensate discharge pin is formed, it is left in the first bent portion, disposed on the edge of the first bent portion connecting portion for connecting the first and second fin portion; may further include a.

When the second condensate discharge pin is formed, it is left in the second bent portion, the connecting portion disposed on the edge of the second bent portion connecting the first and second pin portion; may further include a.

The first fin includes a unit wave composed of the first fin portion, the first bent portion, the second fin portion, and the second bent portion, and the plurality of unit waves are formed extending in the longitudinal direction of the flat tube. The unit wave may be formed in a wave shape.

At least one of the first bent portion or the second bent portion may be formed in an arc shape.

The first fin includes a unit wave composed of the first fin portion, the first bent portion, the second fin portion, and the second bent portion, and the plurality of unit waves are formed extending in the longitudinal direction of the flat tube. The unit wave may be formed in a trapezoidal shape.

The first fin part and the second fin part may be inclined with respect to the vertical direction, and the inclination direction of the first fin part and the inclination direction of the second fin part may be disposed in opposite directions.

The inclination direction of the first fin part and the inclination direction of the second fin part may be opposed to each other with respect to the up and down direction.

The first fin includes a unit wave composed of the first fin portion, the first bent portion, the second fin portion, and the second bent portion, and the plurality of unit waves are formed extending in the longitudinal direction of the flat tube. The unit wave may be formed in a parallelogram shape.

The heat exchanger of the present invention has one or more of the following effects.

First, the present invention has the advantage that it is easy to move the condensed water to the pin disposed on the lower side through the condensate discharge hole and the condensate discharge pin.

Second, the present invention has the advantage that can be produced through a pin roll type machine because the first pin portion and the second pin portion by cutting a portion of the bent to form a condensate discharge hole and a condensate discharge pin.

Third, because the present invention is manufactured through a pin roll type machine, there is an advantage of low manufacturing cost.

Fourth, the present invention has the advantage of contacting the condensate discharge pin disposed on the lower side of the first fin and the condensate discharge pin disposed on the upper side of the second fin, it is easy to move the condensate through the contacted condensate discharge pins .

Fifth, the present invention has the advantage that the condensate discharge pin disposed on the lower side of the first fin and the condensate discharge pin disposed on the upper side of the second fin spacing a predetermined interval, and can easily move the condensate through the spaced condensate discharge pins There is this.

Sixth, the present invention has the advantage that it is easy to discharge the condensate because the condensate discharge pin, the flow space and the condensate discharge holes are arranged in a line in the vertical direction.

Seventh, the present invention has the advantage that the unit wave consisting of the first fin portion, the first bent portion, the second fin portion and the second bent portion can be variously formed into a right wave shape, a curved wave shape, a trapezoid shape, a parallelogram shape, and the like. have.

1 is a cross-sectional view of a microchannel heat exchanger according to the prior art.

2 is a perspective view of a microchannel heat exchanger according to a first embodiment of the present invention.

3 is a front view of FIG. 2.

4 is a plan view of FIG. 2.

5 is a left side view of FIG. 2.

6 is a perspective view of a microchannel heat exchanger according to a second embodiment of the present invention.

7 is a front view of FIG. 6.

8 is a plan view of FIG. 6.

9 is a right side view of FIG. 6.

10 is a perspective view of a microchannel heat exchanger according to a third embodiment of the present invention.

11 is a front view of FIG. 10.

12 is a right side view of FIG. 10.

13 is a perspective view of a micro-channel heat exchanger according to a fourth embodiment of the present invention.

14 is a perspective view of a micro-channel heat exchanger according to a fifth embodiment of the present invention.

15 is a perspective view of a microchannel heat exchanger according to a sixth embodiment of the present invention.

16 is a perspective view of a microchannel heat exchanger according to a seventh embodiment of the present invention.

17 is a perspective view of a microchannel heat exchanger according to an eighth embodiment of the present invention.

18 is a graph showing a change in Wet / Dry ΔP according to the interval of the condensate discharge pin and the protrusion length of the condensate discharge pin according to the third embodiment of the present invention.

19 is a perspective view of a microchannel heat exchanger according to a ninth embodiment of the present invention.

20 is a rear side perspective view of FIG. 19.

21 is a front view of FIG. 19.

22 is a top view of FIG. 19.

FIG. 23 is a left side view of FIG. 19.

24 is a perspective view of a microchannel heat exchanger according to a tenth embodiment of the present invention.

25 is a front view of FIG. 24.

FIG. 26 is a plan view of FIG. 24.

27 is a right side view of FIG. 24.

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

A microchannel heat exchanger according to a first embodiment will be described with reference to FIGS. 2 to 5.

The microchannel heat exchanger according to the present embodiment is disposed between the plurality of flat tubes 10 in which a plurality of flow paths are formed, and the two flat tubes 10, and each of the two flat tubes 10. And a pin 20 coupled to conduct heat, and a first header (not shown) and a second header (not shown) respectively assembled at both ends of the plurality of flat tubes 10 to flow a refrigerant.

In the microchannel heat exchanger, when the refrigerant is supplied to the first header, the refrigerant flows through the flat tubes 10 to the second header. On the contrary, when the coolant is supplied to the second header, the coolant flows to the first header.

Since the first header and the second header are well known to those skilled in the art, a detailed description thereof will be omitted.

The flat tubes 10 are formed in a flat shape, and a plurality of flow paths are formed therein. The flat tube 10 is formed of a metal material, in this embodiment is formed of an aluminum material.

The flat tubes 10 are arranged horizontally in this embodiment, the extending direction of the pins 20 are also arranged in the horizontal direction. The microchannel heat exchanger according to the present embodiment has a flat tube 10 and a fin 20 arranged horizontally to facilitate the discharge of condensate.

Unlike the present embodiment, the extension directions of the flat tubes 10 and the fins 20 may be vertically arranged.

The pin 20 is formed to be bent in the longitudinal direction (left and right direction in the drawing) of the flat tube (10). Since the pin 20 can be manufactured in a continuous process by the pin roll method, there is an advantage that the manufacturing cost is low.

The pin 20 is formed of a metal material, and in the present embodiment, is made of aluminum such as the flat tube 10. The fin 20 is intended to quickly conduct heat of the flat tube 10 to improve the heat exchange efficiency.

The pin 20 is disposed between the flat tubes 10. For the sake of explanation, the uppermost pin 20 is defined as a first pin 20-1, and the pin 20 positioned below the first pin 20-1 is defined as a second pin 20-. 2), the pin 20 located below the second pin 20-2 is defined as a third pin 20-3.

The fin 20 is formed by bending the first fin portion 30 disposed between the two flat tubes 10 and the first fin portion 30, and any one of the two flat tubes 10 A first bent portion 50 in contact with one, and formed by bending the first bent portion 50, and opposed to the first fin portion 30, and disposed between the two flat tubes 10 And a second fin portion 40 to be bent and formed with the second fin portion 40, and a second bent portion 60 contacting the other one of the two flat tubes 10.

For convenience of description, the flat tube 10 in contact with the first bent portion 50 is defined as the first flat tube 11, and the flat tube 10 in contact with the second bent portion 60 is defined. It is defined as the second flat tube 12.

The first fin 20-1 is disposed above the second flat tube 12, and the second fin 20-2 is disposed below the second flat tube 12.

The pin 20 has a first pin portion 30, the first bent portion 50, the second pin portion 40 and the second bent portion 60 is formed repeatedly.

The first fin part 30 supports the first flat tube 11 and the second flat tube 12.

The first fin part 30 is disposed orthogonally to the longitudinal direction of the first flat tube 11 and the second flat tube 12.

The second fin portion 40 also supports the first flat tube 11 and the second flat tube 12, like the first fin portion 30, and the first flat tube 11 and the second flat tube 12. Is orthogonal to the longitudinal direction.

The first fin part 30 and the second fin part 40 are disposed at a predetermined distance apart from each other. A flow space 25 through which air flows is formed between the first fin part 30 and the second fin part 40. Air for heat exchange passes through the flow space 25 formed between the first fin part 30 and the second fin part 40.

In this embodiment, air flows from the front side to the rear side. The flow space 25 is formed from the front side to the rear side.

The flow space 25 formed between the first fin part 30 and the second fin part 40 is opened in the horizontal direction. One of the upper side and the lower side of the flow space 25 is closed by the bent portion, and the other is closed by the flat tube.

As the spacing of the flow space 25 formed between the first fin part 30 and the second fin part 40 is narrower, more fin parts can be installed, thereby improving heat exchange efficiency.

However, when the gap between the flow space 25 is narrow, the condensed water generated when the evaporator is operated may be attached to the first fin part 30 and the second fin part 40 by surface tension. In this embodiment, the condensed water is formed at intervals that do not connect the first fin portion 30 and the second fin portion 40 by surface tension.

Since the condensed water generated in the first fin portion 30 and the second fin portion 40 is in contact with the air flowing along the flow space 25, the condensed water flows downward.

At least one of the first fin part 30 and the second fin part 40 is provided with

vents

21 and 22 communicating with an adjacent flow space 25 ′.

In the present exemplary embodiment, the ventilation holes 21 and 22 are formed in both the first fin part 30 and the second fin part 40. In addition, although two

ventilation holes

21 and 22 are formed in both the first fin part 30 and the second fin part 40, only one may be formed unlike the present embodiment.

For convenience of description, the

vents

21 and 22 are defined as the first vent 21 and the second vent 22.

The ventilation holes 21 and 22 may be formed in a hole or slit shape.

In the present embodiment, the vent holes 21 and 22 are formed by cutting the first fin part 30 and the second fin part 40.

The first fin portion 30 is provided with a first-one louver 31, which forms a first ventilation hole 21. In addition, the first fin part 30 is formed with the first and second louvers 32 forming the second ventilation holes 22.

The 1-1 louver 31 is formed by bending the first pin part 30 that is cut. The first vent 21 is formed at a position where the 1-1 louver 31 is cut.

The 1-2 louvers 32 are also formed in the same manner as the 1-1 louvers 31.

The

louvers

31 and 32 play a guide role of guiding some of the air flowing along the flow space 25 to the adjacent flow space 25 ′.

In the present embodiment, the first-first louver 31 and the second-first louver 32 are formed to guide air in different directions.

For example, if the 1-1 louver 31 is formed to direct air from the adjacent flow space 25 'to the flow space 25, the first 1-2 louvers 32 are adjacent flow space in the flow space 25. Guide air to 25 '.

The louver is formed to protrude from the first fin part 30 or the second fin part 40 toward the flow space 25 or the adjacent flow space 25 '.

The louver is formed perpendicular to the longitudinal direction of the first flat tube 11 and the second flat tube 12.

The louver formed in the second fin part 40 has the same structure as the louver formed in the first fin part 30 and is defined as a 2-1 louver 41 and a 2-2 louver 42 for convenience of description.

The 1st ventilation opening 21 is formed in the 2nd fin part 40 by the 2-1 fever 41, and the 2nd ventilation opening 22 is formed by the 2-2 louver 42. As shown in FIG.

Since the 1-1 louver 31 and the 1-2 louver 32 are formed in opposite directions to each other, the installation direction of the fin 20 may not be considered when installing the heat exchanger.

The first bent portion 50 is in close contact with the first flat tube 11, and conducts heat from the first flat tube 11.

The first bent portion 50 is formed in a plane in this embodiment.

In the present embodiment, the first bent portion 50 is disposed above and the second bent portion 60 is disposed below, but may be positioned opposite to each other.

The vents and louvers are also molded in a continuous process through a pin roll manufacturing method.

Condensate discharge pins 70 and 71 are formed in the first bent part 50 to discharge the condensed water in the flow space 25. The condensate discharge pin 70 is formed after being cut from the first bent part 50.

The first bent portion 50 is formed with a condensate discharge hole 51 in the place where the condensate discharge pin 70 was. The condensate discharge hole formed in the first bent part 50 is defined as a first condensate discharge hole 51.

The condensate discharge hole 51 is disposed in the first bent portion 50 and is positioned outside the flat tube 10. The condensate discharge hole 51 is not covered by the flat tube 10.

In the present exemplary embodiment, two condensate discharge pins 70 are formed to face the first bent part 50. Only one condensate discharge hole 51 is formed. Unlike the present embodiment, a condensate discharge hole 51 may be formed at the front and the rear of the flat tube 10, respectively.

Since the two condensate discharge pins 70 are formed in a limited area, the length of the condensate discharge pins 70 is less than half the width of the first bent portion 50.

In addition, a connection part 52 connecting the first pin part 30 and the second pin part 40 is formed at the edge of the first bent part 50.

The connection part 52 is a part left when the condensate discharge pin 70 is formed. Thus, the connection portion 52 is formed in contact with the condensate discharge hole 51. Since the connecting portion 52 connects the first pin portion 30 and the second pin portion 40, the strength of the pin 20 is improved.

The condensed water located in the flow space 25 may be discharged out of the flow space 25 through the condensate discharge hole 51.

The condensate discharge pin 70 guides the flow of condensate when the condensate is discharged. The flow space 25 of the other fin is disposed below the condensate discharge pin 70, and the condensate flows into the flow space of the other fin.

The condensate discharge hole 61 and the condensate discharge pins 70 and 72 having the same structure as the first bent portion 50 are also formed in the second bent portion 60. The condensate discharge hole formed in the second bent part 60 is defined as a second condensate discharge hole 61.

Since the flat tubes 10 are stacked and the fins 20 are disposed between the flat tubes 10, the condensate discharge pins 71 and the second bent portions formed in the first bent portion 50 ( Condensate discharge pin 72 formed in 60 is disposed in the vertical direction.

For convenience of description, the condensate discharge pin disposed at the first bent part 50 is defined as the first condensate discharge pin 71, and the condensate discharge pin disposed at the second bent part 60 is the second condensate discharge pin. It is defined as 72.

The first condensate discharge pin 71 and the second condensate discharge pin 72 may be disposed in the vertical direction. The first condensate discharge pin 71 and the second condensate discharge pin 72 formed in one pin 20 are disposed in the vertical direction, but are not disposed in the vertical direction. Since the first bent portion 50 and the second bent portion 60 are arranged in the longitudinal direction in one pin 20, the first condensate discharge pin 71 and the second condensate discharge pin 72 are also lengthwise. It is arranged in the direction (left-right direction in drawing).

The first condensate discharge pin 71 and the second fin 20-2 of the first fin 20-1 may be aligned in a line with respect to the vertical direction. In addition, the second condensate discharge pin 72 and the second fin 20-2 of the first fin 20-1, the second condensate discharge pin 72 may be aligned in a vertical line.

In the present exemplary embodiment, the second bent part 60 of the second pin 20-2 is disposed below the first bent part 50 of the first pin 20-1.

2, the first condensate discharge pin 71 of the second fin 20-2 and the second condensate discharge pin 72 of the first fin 20-1 are aligned in a vertical direction. do.

The first condensate discharge pin 71 of the second fin 20-2 and the second condensate discharge pin 72 of the first fin 20-1 may be in contact with each other.

In addition, the first condensate discharge pin 71 of the second fin 20-2 and the second condensate discharge pin 72 of the first fin 20-1 may be spaced a predetermined distance. The distance between the first condensate discharge pin 71 and the second condensate discharge pin 72 is a distance that can be moved by the surface tension of the condensate.

In the present embodiment, the first condensate discharge pin 71 of the second fin 20-2 and the second condensate discharge pin 72 of the first fin 20-1 are in contact with each other in the vertical direction.

Thus, the condensate that has flowed into the second condensate discharge pin 72 of the first fin 20-1 is along the first condensate discharge pin 71 of the second fin 20-2. Can be flowed into.

The edge of the flat tube 10 may be in close contact with the condensate discharge pin 70 side. When used as an evaporator, the temperature of the flat tube 10 is formed at the lowest. The condensate generated in the flat tube 10 can be quickly moved to the lower side through the close condensate discharge pin 70. The rapid flow of condensate in this way can minimize the freezing of the condensate on the surface of the flat tube (10).

In the present embodiment, the condensate discharge pin 70 and the condensate discharge holes 51 and 61 are formed only at one side (front side) of the fin 20. Unlike the present embodiment, both the condensate discharge pins 70 and the condensate discharge holes 51 and 61 may be formed at both sides (front side and rear side) of the fin 20.

In addition, in the present embodiment, the first bent part 50 and the second bent part 60 are cut to form condensate discharge pins 70 and condensate discharge holes 51 and 61, but unlike the present embodiment, condensed water Only the discharge holes 51 and 61 may be formed. In addition, when only the condensate discharge holes 51 and 61 are formed, a plurality of condensate discharge holes 51 and 61 may be formed along the first bent part 50 or the second bent part 60.

6 to 9, a microchannel heat exchanger according to a second embodiment of the present invention will be described.

For the sake of explanation, the uppermost pin 220 is defined as a first pin 220-1, and the pin 220 positioned below the first pin 220-1 is defined as a second pin 220-. 2), and the pin 220 positioned below the second pin 220-2 is defined as the third pin 220-3.

Unlike the first embodiment, the fin 220 according to the present embodiment has condensate discharge pins 271 and 272 disposed on the front side and the rear side of the flat tube 10, respectively.

The first condensate discharge pins 271 are disposed on the front side and the rear side of the flat tube 10, respectively. The first condensate discharge pins 271 are disposed at the front side and the rear side of the first bent portion 50, respectively.

The second condensate discharge pin 272 is disposed on the front side and the rear side of the flat tube 10, respectively. The second condensate discharge pin 272 is disposed at the front side and the rear side of the second bent portion 60, respectively.

The first condensate discharge pin 271 and the second condensate discharge pin 272 disposed on each fin 220 are arranged in a line with respect to the vertical direction. The first condensate discharge pin 271 and the second condensate discharge pin 272 disposed on the different fins 220 are also arranged in a line with respect to the vertical direction.

The first condensate discharge pin 271 and the second condensate discharge pin 272 may be arranged in a line with the first fin part 30 or the second fin part 40. In this embodiment, the first condensate discharge pin 271 and the second condensate discharge pin 272 are arranged in a line with the first fin portion 30, and are disposed on the same vertical plane.

When the first condensate discharge pin 271 and the second condensate discharge pin 272 are arranged in a line on the same vertical plane, the condensate can be moved to the shortest distance. In addition, since the bending is not formed on the path through which the condensed water is moved, there is an advantage of minimizing the resistance.

In the present embodiment, the first condensate discharge hole 51 is formed at the front side and the rear side of the first bent part 50, respectively. In the present embodiment, the second condensate discharge hole 61 is formed at the front side and the rear side of the second bent portion 60, respectively.

The first condensate discharge hole 51 is disposed at the front side and the rear side of the flat tube 10, respectively. The second condensate discharge hole 61 is disposed at the front side and the rear side of the flat tube 10, respectively.

In the present embodiment, the first condensate discharge hole 51 is formed by one first condensate discharge pin 271. In the present embodiment, the second condensate discharge hole 61 is formed by one second condensate discharge pin 272.

Since the rest of the configuration is the same as in the first embodiment, a detailed description thereof will be omitted.

10 to 12, a microchannel type heat exchanger according to a third embodiment of the present invention will be described.

In the present exemplary embodiment, the uppermost pin 320 is defined as the first pin 320-1, and the pin 320 positioned below the first pin 320-1 is removed. The pin 320 is defined as the second pin 320-2, and the pin 320 positioned below the second pin 320-2 is defined as the third pin 320-3.

Unlike the second embodiment, the fin 320 according to the present embodiment is omitted from the configuration of the connection part 52 constituting the condensate discharge hole.

Thus, the first condensate discharge hole 51 is formed at the front side of the first bent portion 50, and the front side of the first condensate discharge hole 51 is opened. A first condensate discharge hole 51 is formed at a rear side end of the first bent part 50, and a rear side of the first condensate discharge hole 51 is opened. If there is no connection portion 52, the resistance with air can be reduced. In addition, when there is no connection portion 52, it is possible to minimize the condensed water formed on the connection portion 52.

Since the rest of the configuration is the same as the second embodiment, a detailed description thereof will be omitted.

A microchannel heat exchanger according to a fourth embodiment of the present invention will be described with reference to FIG. 13.

In the present embodiment, for the sake of explanation, the pin 420 located at the uppermost side is defined as the first pin 420-1, and the pin 420 located below the first pin 420-1 is removed. The pin 420-2 is defined, and the pin 420 positioned below the second pin 420-2 is defined as the third pin 420-3.

In the fin 420 according to the present embodiment, the condensate discharge pins 171 and 172 are disposed and the shapes of the condensate discharge holes 51 and 61 are different from those of the second embodiment.

The first condensate drain pin 171 is disposed in line with the first fin part 30, and the second condensate drain pin 172 is disposed in line with the second fin part 40.

The first condensate discharge pin 171 is in contact with the second bent portion 60. Unlike the present embodiment, the first condensate discharge pin 171 may be in contact with the second fin part 40.

The second condensate discharge pin 172 is in contact with the first bent portion 50. Unlike the present embodiment, the second condensate discharge pin 172 may be in contact with the first fin part 30.

The first condensate discharge pin 171 and the second condensate discharge pin 172 are disposed to face each other.

In the second embodiment, the configuration of the connecting portion 52 constituting the first condensate discharge hole 51 is omitted. In the second embodiment, the configuration of the connecting portion 52 constituting the second condensate discharge hole 61 is omitted.

Thus, the outer side of the first condensate discharge hole 51 and the outer side of the second condensate discharge hole 61 are opened.

A microchannel heat exchanger according to a fifth exemplary embodiment of the present invention will be described with reference to FIG. 14.

Unlike the first embodiment, the fin according to the present embodiment is omitted from the configuration of the connection part 52 constituting the first condensate discharge hole 51, and the connection part 52 constituting the second condensate discharge hole 61. ) Is also deleted.

The outer side of the first condensate discharge hole 51 and the outer side of the second condensate discharge hole 61 are opened.

A microchannel heat exchanger according to a sixth embodiment of the present invention will be described with reference to FIG. 15.

In the present embodiment, for the sake of explanation, the uppermost pin 520 is defined as the first pin 520-1, and the lower pin 520 is disposed below the first pin 520-1. The pin 520-2 is defined, and the pin 520 positioned below the second pin 520-2 is defined as the third pin 520-3.

The fin 520 according to the present embodiment has a wave shape different from that of the second embodiment.

In the second embodiment, the unit wave formed by the first fin part 30, the first bent part 50, the second fin part 40, and the second bent part 60 forms a quadrangular shape. The unit wave in is formed in a wave shape.

The first fin part 30, the first bent part 50, the second fin part 40, and the second bent part 60 may be formed in a curved line.

The first bent part 50 and the second bent part 60 may have an arc shape, and the first fin part 30 and the second fin part 40 may have a straight line shape.

The number, shape or arrangement of the condensate discharge pins 571 and 572 formed in the bent portions may be arranged in at least one of the first to fifth embodiments.

The number, shape and arrangement of the condensate discharge holes formed in the bent portions may be arranged in at least one of the first to fifth embodiments.

A microchannel heat exchanger according to a seventh embodiment of the present invention will be described with reference to FIG. 16.

In the present embodiment, for the sake of explanation, the pin 620 located at the uppermost side is defined as the first pin 620-1, and the pin 620 located below the first pin 620-1 is removed. The pin 620-2 is defined, and the pin 620 positioned below the second pin 620-2 is defined as the third pin 620-3.

The pin 620 according to the present embodiment has a wave shape different from that of the second embodiment.

In the second embodiment, the unit wave formed by the first fin part 30, the first bent part 50, the second fin part 40, and the second bent part 60 forms a quadrangular shape. The unit wave in is formed in the form of a Sarari.

The first fin part 30 and the second fin part 40 may be disposed to be inclined with respect to the vertical direction. The inclination direction of the first fin part 30 and the inclination direction of the second fin part 40 may be different. The inclination direction of the first fin part 30 and the inclination direction of the second fin part 40 may be symmetrical.

Meanwhile, the pins 620 may be symmetrically disposed in the vertical direction.

For example, the first fin 620-1 and the second fin 620-2 may be disposed symmetrically with respect to the up and down direction, and the unit wave may also be disposed symmetrically with respect to the up and down direction. In addition, the second fin 620-2 and the third fin 620-3 may be disposed symmetrically with respect to the up and down direction, and the unit wave may also be disposed symmetrically with respect to the up and down direction.

The number, shape or arrangement of the condensate discharge pins formed in the bent portions may be arranged in at least one of the first to fifth embodiments.

A microchannel heat exchanger according to an eighth embodiment of the present invention will be described with reference to FIG. 17.

In the present embodiment, for the sake of explanation, the uppermost pin 720 is defined as the first pin 720-1, and the pin 720 positioned below the first pin 720-1 is removed. The second fin 720-2 is defined, and the fin 720 positioned below the second fin 720-2 is defined as the third fin 720-3.

The pin 720 according to the present embodiment has a wave shape different from that of the second embodiment.

In the second embodiment, the unit wave formed by the first fin part 30, the first bent part 50, the second fin part 40, and the second bent part 60 forms a quadrangular shape. The unit wave in is formed in parallelogram shape.

The first fin part 30 and the second fin part 40 may be disposed to be inclined with respect to the vertical direction. The inclined direction of the first fin part 30 and the inclined direction of the second fin part 40 may be formed to face the same direction.

On the other hand, the pins 720 may be arranged symmetrically in the vertical direction.

The interval of the condensate discharge pin means a distance between the first condensate discharge pin of the second fin and the second condensate discharge pin of the first fin.

The protruding length of the condensate discharge pin means a length protruding outward from the edge of the flat tube. In this embodiment, the length protrudes from the edge of the flat tube to the front side or the rear side.

Referring to the graph, it is preferable that the interval between the condensate drain pins is 0 mm or more and 0.5 mm or less. The protruding length of the condensate discharge pin is preferably 2 mm or more and 4 mm or less.

A microchannel heat exchanger according to a ninth embodiment will be described with reference to FIGS. 19 to 23.

Unlike the first embodiment, the microchannel heat exchanger according to the present embodiment is characterized in that the first condensate discharge pin 71 and the second condensate discharge pin 72 are spaced apart from each other.

The pin 20 is formed bent in the longitudinal direction of the flat tube (10). Since the pin 20 can be manufactured in a continuous process by the pin roll method, there is an advantage that the manufacturing cost is low.

The first fin part 30 and the second fin part 40 are disposed at a predetermined distance apart from each other. A flow space 25 through which air flows is formed between the first fin part 30 and the second fin part 40.

Air for heat exchange passes through the flow space 25 formed between the first fin part 30 and the second fin part 40.

vents

21 and 22 communicating with an adjacent flow space 25 ′.

ventilation holes

For convenience of description, the

vents

21 and 22 are defined as the first vent 21 and the second vent 22.

The ventilation holes 21 and 22 may be formed in a hole or slit shape.

The 1-2 louvers 32 are also formed in the same manner as the 1-1 louvers 31.

The

louvers

The first bent portion 50 is formed in a plane in this embodiment.

Condensate discharge pins 70 and 71 are formed in the first bent part 50 to discharge the condensed water in the flow space 25.

The condensate discharge pin 70 is formed after being cut from the first bent part 50.

Therefore, the condensate discharge hole 51 is formed at the position where the condensate discharge pin 70 is located in the first bent portion 50. The condensate discharge hole formed in the first bent part 50 is defined as a first condensate discharge hole 51.

In the present exemplary embodiment, two condensate discharge pins 70 are formed to face the first bent part 50. Only one condensate discharge hole 51 is formed.

The condensate discharge pin 70 guides the flow of condensate when the condensate is discharged.

The first condensate discharge pin 71 and the second condensate discharge pin 72 may be disposed in the vertical direction. The first condensate discharge pin 71 and the second condensate discharge pin 72 may be aligned in a line. When the first condensate discharge pin 71 and the second condensate discharge pin 72 are aligned, the first condensate discharge pin 71 and the second condensate discharge pin 72 may be spaced apart from each other by a predetermined distance.

The distance between the first condensate discharge pin 71 and the second condensate discharge pin 72 is a distance that can be moved by the surface tension of the condensate.

Thus, the condensed water generated in the flow space 25 of the upper fin 20 may be discharged to the condensed water discharge hole 61 and may flow downward along the second condensed water discharge pin 72. The condensed water may flow downward along the adjacent second condensate discharge pin 72 and the first condensate discharge pin 71.

The flat tube 10 may be disposed in close contact with the condensate discharge pin 70 side. When used as an evaporator, the temperature of the flat tube 10 is formed at the lowest. The condensate generated in the flat tube 10 can be quickly moved to the lower side through the close condensate discharge pin 70. The rapid flow of condensate in this way can minimize the freezing of the condensate on the surface of the flat tube (10).

In the present embodiment, the condensate discharge pin 70 and the

condensate discharge hole

51 and 61 are formed only at one side of the pin 20. Unlike the present embodiment, the condensate discharge pin 70 and the

condensate discharge hole

51 and 61 may be formed at both sides of the fin 20.

A microchannel heat exchanger according to a tenth embodiment of the present invention will be described with reference to FIGS. 24 to 27.

Unlike the first embodiment, the heat exchanger according to the present embodiment has a different position and alignment structure of the condensate discharge pin 70.

In the fin 120 according to the present embodiment, condensate discharge pins 170 are formed at both edges of the first bent portion 50, respectively. The fin 120 has condensate discharge pins 170 respectively formed at both edges of the second bent portion 60.

For convenience of description, the condensate discharge pin disposed at the first bent part 50 is defined as the first condensate discharge pin 171, and the condensate discharge pin disposed at the second bent part 60 is the second condensate discharge pin. It is defined as (172).

Condensate discharge holes 51 are formed at both edges of the first bent part 50.

Condensate discharge holes 61 are formed at both edges of the second bent part 60.

Unlike the first embodiment, one condensate discharge pin 170 is formed in one of the condensate discharge holes 51 and 61.

The first condensate discharge pin 171 and the second condensate discharge pin 172 formed on the fin 120 are disposed to be shifted in the vertical direction. That is, the first condensate discharge pin 171 and the second condensate discharge pin 172 are not arranged in a line unlike the first embodiment.

Thus, when the fins 120 are stacked, the first condensate discharge pin 171 and the second condensate discharge pin 172 are positioned to be shifted in the left and right directions. In particular, the first condensate discharge pin 171 and the second condensate discharge pin 172 are disposed to face each other in a staggered state.

In the state in which the fins 120 are stacked, the second condensate discharge pin 172 of the upper layer fin 120 and the first condensate discharge pin 171 of the lower layer fin 120 are positioned to face each other.

In the present embodiment, when the fin 120 is viewed from the front, the first condensate discharge pin 171 and the second condensate discharge pin 172 are arranged in a line.

Unlike the present embodiment, when the fin 120 is viewed from the front, the first condensate discharge pin 171 may be disposed to be offset. The second condensate discharge pin 172 may also be disposed to be offset when viewed from the front.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments but may be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims

A flat tube formed in a micro channel type and horizontally; And a first fin disposed above the flat tube and conducting heat of the flat tube. In the heat exchanger comprising: a second fin disposed under the flat tube, the second fin for conducting heat of the flat tube,

The first pin,

A first fin part disposed on the flat tube and intersecting the flat tube; A second fin portion disposed on the flat tube and intersecting the flat tube and spaced apart from the first fin portion; A first bent portion that is bent at the first and second pin portions and connects upper sides of the first and second pin portions; A second bent portion bent from the first pin portion and the second pin portion, and connecting a lower side of the first pin portion and the second pin portion; A flow space formed between the first fin portion and the second fin portion and spaced apart from each other and formed in an opening and closing direction; A first condensate discharge pin formed by cutting the first bent portion to form a first condensate discharge hole and being bent upward from the first bent portion; And a second condensate discharge pin formed by cutting the second bent portion to form a second condensate discharge hole and being bent downward from the second bent portion.

The second pin,

A first fin part disposed on the flat tube and intersecting the flat tube; A second fin portion disposed on the flat tube and intersecting the flat tube and spaced apart from the first fin portion; A first bent portion that is bent at the first and second pin portions and connects upper sides of the first and second pin portions; A second bent portion bent from the first pin portion and the second pin portion, and connecting a lower side of the first pin portion and the second pin portion; A flow space formed between the first fin portion and the second fin portion and spaced apart from each other and formed in an opening and closing direction; A first condensate discharge pin formed by cutting the first bent portion to form a first condensate discharge hole and being bent upward from the first bent portion; And a second condensate discharge pin formed by cutting the second bent portion to form a second condensate discharge hole and being bent downward from the second bent portion.
The method according to claim 1,

And a second condensate discharge pin of the first fin and a first condensate discharge pin of the second fin in contact with each other.
The method according to claim 1,

And a second condensate discharge pin of the first fin and a first condensate discharge pin of the second fin are spaced apart from each other.
The method according to claim 2 or 3,

And a second condensate discharge hole disposed below the flow space of the first fin.
The method according to claim 2 or 3,

And the first condensate discharge hole and the second condensate discharge hole are disposed outside the flat tube.
The method according to claim 2 or 3,

And a first condensate discharge pin and a first condensate discharge hole formed at the front side and the rear side of the flat tube, respectively.
The method according to claim 2 or 3,

And a second condensate discharge pin and a second condensate discharge hole respectively formed at the front side and the rear side of the flat tube.
The method according to claim 2 or 3,

A plurality of second condensate discharge pins forming the second condensate discharge hole of the first fin portion is formed,

The first condensate discharge pins of the second fin portion is a heat exchanger disposed in contact with any one of the second condensate discharge pins formed in plurality.
The method according to claim 2 or 3,

A plurality of first condensate discharge pins forming the first condensate discharge hole of the second fin portion is formed,

The second condensate discharge pins of the first fin portion is a heat exchanger disposed in contact with one of the plurality of first condensate discharge pins formed in plurality.
The method according to claim 2 or 3,

A plurality of second condensate discharge pins forming the second condensate discharge hole of the first fin portion is formed,

A plurality of first condensate discharge pins forming the first condensate discharge hole of the second fin portion is formed,

The plurality of second condensate discharge pins are disposed in contact with the plurality of first condensate discharge pins, respectively.
The method according to claim 2 or 3,

When the first condensate discharge pin is formed, the first bent portion is left, the connection portion disposed on the edge of the first bent portion connecting the first fin portion and the second fin portion; heat exchanger further comprising a.
The method according to claim 2 or 3,

When the second condensate discharge pin is formed, the connection portion is left in the second bent portion, disposed on the edge of the second bent portion connecting the first fin portion and the second fin portion; heat exchanger further comprising.
The method according to claim 2 or 3,

The first fin includes a unit wave consisting of the first fin portion, the first bent portion, the second fin portion, and the second bent portion, wherein the plurality of unit waves extend in the longitudinal direction of the flat tube,

The unit wave is a heat exchanger formed in a wave shape.
The method according to claim 13,

At least one of the first bent portion and the second bent portion is formed in an arc shape.
The method according to claim 2 or 3,

The first fin includes a unit wave consisting of the first fin portion, the first bent portion, the second fin portion, and the second bent portion, wherein the plurality of unit waves extend in the longitudinal direction of the flat tube,

The unit wave is formed in a trapezoidal heat exchanger.
The method according to claim 15,

And the first fin portion and the second fin portion are inclined with respect to the vertical direction, and the inclined direction of the first fin portion and the inclined direction of the second fin portion are arranged in opposite directions.
The method according to claim 16,

The inclined direction of the first fin portion and the inclined direction of the second fin portion are opposed to each other with respect to the vertical direction.
The method according to claim 2 or 3,

The first fin includes a unit wave consisting of the first fin portion, the first bent portion, the second fin portion, and the second bent portion, wherein the plurality of unit waves extend in the longitudinal direction of the flat tube,

The unit wave is formed in a parallelogram shape.