KR101650088B1 - A heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger capable of preventing a decrease in the amount of air flow due to the impregnation of condensed water by using a fin having a contact portion formed therein, and securing durability and heat exchange efficiency even when the condensed water is filled.

Description

{HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly, it relates to a heat exchanger which can prevent a decrease in airflow amount due to condensed water impregnation by using a fin having a contact portion formed therein, and by forming a first louver in a second region, To a heat exchanger which can be secured.

A vehicle using an engine having an energy source such as a gasoline or a diesel as an energy source is currently in the form of a general vehicle. However, such a vehicle energy source is also becoming a necessity of a new energy source due to various reasons such as environmental pollution problem and reduction of oil reserves Development and dissemination of an electric vehicle using an electric motor as a driving means have been rapidly increasing. Unlike an ordinary automobile, an electric vehicle does not use an engine as a driving means. Therefore, a separate heating device is additionally provided to heat the interior of the vehicle, and the cooling water is heated to perform heating.

More specifically, in such an electric vehicle, a heating system using cooling water can not be used unlike a conventional vehicle having an engine using an oil as an energy source. That is, in the case of a conventional vehicle using an engine using an oil as an energy source as the driving source, a lot of heat is generated in the engine, a cooling water circulation system for cooling the engine is provided, . However, since a large amount of heat such as that generated by the engine does not occur in the driving source of the electric vehicle, there is a limit to use this conventional heating system.

Accordingly, in an electric vehicle, various studies have been made, such as adding a heat pump to the air conditioning system and using it as a heat source, or providing a separate heat source such as an electric heater.

On the other hand, in an air conditioning system including a heat pump, the heat exchanger functions as a condenser in a cooling mode and as an evaporator in a heating mode.

However, when the heat exchanger operates as an evaporator, the water inside the outside air is cooled and condensed water may be generated on the surface, and the condensed water is congested in the condition of outside temperature such as winter, Which may cause performance deterioration.

In order to solve such a problem, Korean Unexamined Patent Publication No. 2005-0102526 (entitled " Heat Exchanger Structure of Combined Air-conditioning and Air Conditioning System ") is shown in Fig. 1, and the heat exchangers 10 and 20 shown in Fig. The refrigerant tubes 11 and 12 (21 and 22) through which the refrigerant flows, the heat transfer cooling fins 13 and 23 and the heat transfer cooling fins 14 and 24, And the shape of the rear heating fins (14, 24) are different from each other.

The heat exchanger shown in FIG. 1 is advantageous in that the two rows of heat exchanging portions are disposed in parallel to each other in the air flow direction, and the heat exchanging performance is ensured by forming different types of fins.

However, in the case of manufacturing the heat exchanger of two rows by brazing integrally, pinching may occur, and when the specifications of the first row and the second row are different, there is a problem that components of a tube or a pin constituting the work may be mixed have.

In addition, there is a problem in that the structure of the connection pipe and the connection structure of the gas-liquid separator are complicated in order to communicate the two rows of heat-exchanging portions after manufacturing the two rows of heat-exchanging portions.

A heat exchanger of Japanese Laid-Open Patent Publication No. 1996-327268 has been proposed as a method for improving performance deterioration caused by conception, and this is shown in Fig.

2 is a heat exchanger in which a plurality of tubes 1 are arranged in parallel and a pin 2 is interposed between the tubes 1. The heat exchanger shown in Figure 2 includes an air inlet side end portion 2b of the fin 2, Is positioned inside the air inlet side end portion 1b of the tube 1 and a gap d is formed between the end portion 2b of the fin and the end portion 1b of the tube. (Not shown, 1a: tube inner partition, 2a: pin louver)

The heat exchanger shown in FIG. 2 has an advantage that it is possible to reduce the freezing of the condensed water on the upstream side because there is no pin constant region on the upstream side as an inlet in the air flow direction. However, There is a problem that the heat exchange performance between the heat exchanger and the heat exchanger is inevitably lowered.

Therefore, there is a demand for a heat exchanger that can expect a sufficient heat exchange performance even if the condensed water is frozen.

Korean Patent Laid-Open Publication No. 2005-0102526 (entitled " Heat Exchanger Structure of Combined Air- Document 2 Japanese Patent Application Laid-Open No. 1996-327268 (entitled "Heat Exchanger")

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide an air conditioner in which the shape of a fin is formed differently in the air flow direction, The present invention relates to a heat exchanger capable of preventing a problem caused by implantation and guiding air to the inside by forming a first louver in a second area to ensure heat exchange efficiency.

More specifically, it is an object of the present invention to provide a method of manufacturing an air conditioner, in which a contact portion in which a first surface portion and a second surface portion of a fin are joined is formed, And to provide a heat exchanger which can smoothly flow the condensed water and consequently flood the condensed water on the upstream side of the air, so that the air flow is not disturbed and the problems caused by the conception can be solved.

It is also an object of the present invention to provide a heat exchanger in which a fin is provided in the entire area between tubes and a second louver can be further provided in the third area to sufficiently secure the heat exchange efficiency of the air flowing in the outside and the heat exchange medium flowing in the inside To a heat exchanger.

The heat exchanger (1000) of the present invention includes a first header tank (110) and a second header tank (120) spaced apart from each other by a predetermined distance. An inlet pipe 210 connected to the first header tank 110 or the second header tank 120 and through which the heat exchange medium flows, and an outlet pipe 220 discharged; A tube 300 having both ends fixed to the first header tank 110 and the second header tank 120 to form a heat exchange medium flow path; And a fin 400 interposed between the tubes 300. The fin 400 of the heat exchanger 1000 includes a first surface 410 and a second surface 420, And a connection portion 430 connecting the first surface portion 410 and the second surface portion 420 to the first surface portion 410 and the connection portion 430 in the longitudinal direction of the tube 300. [ The first face portion 410 and the second face portion 420 of the upstream side constant region in the air flow direction are in contact with each other so that the first face portion 410 and the second face portion 420 are in contact with each other, A first area A1 in which the contact part 440 is formed, a first face part 410 and a second area 410 from the contact part 440 of the first area A1, A second area A2 where the first louver 460 is formed and a third area A2 where the separation distance between the first and second surface parts 410 and 420 is constant, (A3).

In this case, the first surface portion 410 and the second surface portion 420 of the contact portion 440 are bonded to each other.

The first region A1 of the pin 400 may be formed in a first space A1 in which air can flow to both sides of the tight fitting portion 440 in the longitudinal direction of the first header tank 110 or the second header tank 120, The first space 451 and the second space 452 are formed.

The first louver 460 guides air to the inside where the first and second surface portions 410 and 420 are joined.

The first louver 460 formed on the first surface portion 410 is formed parallel to the first surface portion 410 of the third region A3 and the first louver 460 formed on the second surface portion 420 is formed in parallel with the first surface portion 410 of the third region A3. (460) is formed parallel to the second surface portion (420) of the third region (A3).

In addition, the pin 400 is characterized in that the second louver 470 is formed in the third region A3.

Accordingly, the heat exchanger of the present invention is formed in a different shape of the fin in the air flow direction, thereby preventing the air flow amount from being reduced by the condensed water impregnation, ensuring durability, And the first louver is formed in the second area, thereby guiding air to the inside, thereby securing heat exchange efficiency.

More specifically, in the heat exchanger of the present invention, the fin-like distance (in the tube height direction) on the upstream side in the air flow direction is formed to be larger than the downstream side in the direction of the air flow by forming the contact portion in which the first surface portion and the second surface portion of the fin are joined, And the flow of the condensed water is smoothly carried out, so that even if the condensed water is congested on the upstream side of the air, the air flow is not disturbed and the problem caused by the conception can be solved.

Further, the heat exchanger of the present invention may have a fin in the entire area between the tubes and further include a second louver in the third area, thereby sufficiently securing the heat exchange efficiency between the air flowing in the outside and the heat exchange medium flowing in the inside There are advantages to be able to.

1 shows a conventional heat exchanger.
2 shows another conventional heat exchanger.
3 is a perspective view of a heat exchanger according to the present invention.
4 is a perspective view of a tube and pin assembly of a heat exchanger according to the present invention.
FIGS. 5 to 7 are a perspective view, a sectional view in the AA 'direction, and a sectional view in the BB' direction of the pin shown in FIG. 4;
8 is a cross-sectional view of the pin shown in Fig.
9 is a perspective view of a tube and a pin assembly of a heat exchanger according to the present invention.
10 to 12 are a perspective view, a CC 'sectional view and a DD' sectional view of the pin shown in FIG. 9;
13 and 14 are schematic views showing an example of a refrigerant flow in a heating and cooling state when the heat exchanger according to the present invention is used as an outdoor heat exchanger of an air conditioner including a heat pump.

Hereinafter, the heat exchanger 1000 of the present invention having the above-described characteristics will be described in detail with reference to the accompanying drawings.

The heat exchanger 1000 of the present invention includes a first header tank 110 and a second header tank 120, a first inlet pipe 210, an outlet pipe 220, a tube 300, .

The first header tank 110 and the second header tank 120 are spaced apart from each other by a predetermined distance. The first header tank 110 and the second header tank 120 are spaced apart from each other by a predetermined distance. (Not shown).

The heat exchanger 1000 shown in FIG. 3 is an embodiment of the present invention in which the first header tank 110 and the second header are located on the upper side and the lower side, respectively, The first header tank 110 is connected to the left end of the header tank 110 and the outlet pipe 220 is positioned in parallel with the first header tank 110. However,

The tube 300 has a structure in which both ends are fixed to the first header tank 110 and the second header tank 120 to form a heat exchange medium flow path and a plurality of the tubes 300 are connected to the first header tank 110 or the second header tank 120, In the longitudinal direction of the tank (120).

In the present invention, the longitudinal direction of the first header tank 110 or the second header tank 120 means the longitudinal direction of the heat exchanger 1000 shown in FIG.

The fin 400 is interposed between the tubes 300 and enhances the heat exchange performance between the air passing through the heat exchanger 1000 and the heat exchange medium flowing in the tube 300.

A plurality of pins 400 are provided between the tube 300 and the tube 300 and a single pin 400 is formed to be long in the height direction of the tube 300.

In the present invention, the longitudinal direction of the tube 300 means the height direction of the heat exchanger 1000 shown in FIG.

More specifically, the fin 400 may include a first face portion 410, a second face portion 420, and a connection portion 430.

The first surface portion 410 and the second surface portion 420 form a surface and extend from the first tube 300 to the second tube 300 or extend from the first tube 300 to the first tube 300, As shown in Fig.

The connection portion 430 is a portion connecting the first surface portion 410 and the second surface portion 420.

The pin 400 has the first surface 410 and the second surface 420 in a height direction of the tube 300 and the first surface 410 and the second surface 420, The first face portion 410, the connection portion 430, the second face portion 420, and the connection portion 430 are sequentially and repeatedly positioned.

3 to 7 show an example in which the first face portion 410 and the second face portion 420 of the pin 400 are inclined so as to have a certain angle. The first surface portion 410 and the second surface portion 420 are formed to be parallel to each other in the height direction of the tube 300.

At this time, the heat exchanger 1000 of the present invention forms a tight contact portion 440 in which the first surface portion 410 and the second surface portion 420 of the predetermined portion on the upstream side in the air flow direction of the fin 400 are in contact with each other do.

In the present invention, the air flow direction means the width direction of the heat exchanger 1000 shown in FIG. 3, and indicates the upstream side and the downstream side.

More specifically, the upstream side in the air flow direction means the front side where air is passed in the width direction of the heat exchanger 1000, and the downstream side in the air flow direction means the rear side where air is passed in the width direction of the heat exchanger 1000.

The contact portion 440 is a portion where the first surface portion 410 and the second surface portion 420 of the predetermined region on the upstream side are in contact with each other in the air flow direction of the fin 400, The distance D440 between the pins 400 of the first area A1 can be further widened.

In order to increase the durability of the fin 400 and further increase the effect of the formation of the tight fitting part 440, the first and second side faces 410 and 420 may be joined to each other. have.

That is, in the heat exchanger 1000 of the present invention, the fin portions 440 of the fin can be processed such that certain regions of the first and second surface portions 410 and 420 are in contact with each other, .

At this time, the pin 400 has a first region A1 in which the adhesion portion 440 is formed in the air flow direction, a first face portion 410 and a second face portion 410 from the contact portion 440 of the first region A1, A second region A2 where the distance between the two faces 420 is increased and a third region A3 where the distance between the first face 410 and the second face 420 is constant.

The first region A1 to the third region A3 are formed on the first face portion 410 and the second face portion 420 which are the same in the longitudinal direction of the tube 300, Refers to the distance between the first surface portion 410 and the second surface portion 420 that form the tight contact portion 440 in the height direction of the tube 300 .

The heat exchanger 1000 of the present invention has the fin 440 formed on the fin 400 so that the distance D440 between the fins 400 in the first region A1 is larger than the distance D440 between the fins 400 in the third region A3. It is possible to expand the distance D1 and D2 between the pins 400 so that even if condensed water is congested on the upstream side in the air flow direction, it is possible to sufficiently secure a space in which air can flow to smooth the flow of air, There is an advantage that sufficient durability and heat exchange performance can be secured.

The distances between the fins 400 of the third region A3 are denoted by a distance D1 between a region between the first face portion 410 and the second face portion 420 where the contact portion 440 is formed, The distance between the upper surface of the tube 300 and the upper surface 420 of the tube 300 and the distance between the upper surface of the tube 300 and the upper surface Respectively.

6 is a sectional view of the pin 400 in the AA 'direction in FIG. 4, and shows a first region A1 (A1) in which the contact portion 440 is formed, and FIG. 7 is a cross-sectional view of the pin 400 in the BB 'direction shown in Fig. 4, and is a sectional view of the third area A3. Fig. 8 is a cross-sectional view of the pin 400 shown in Fig. 11 is a cross-sectional view of the pin 400 shown in FIG. 9 in the CC 'direction and is a sectional view of a first region A1 in which a contact portion 440 is formed, and FIG. 12 is a cross- Sectional view of the pin 400 in the DD 'direction, and is a sectional view of the third area A3.

In the heat exchanger 1000 of the present invention, the first region A1 of the fin 400 is connected to the tight fitting portion 440 in the longitudinal direction of the first header tank 110 or the second header tank 120, A first space portion 451 and a second space portion 452 through which air can flow are formed on both sides.

6, 7, 11, and 12, the first space 451 refers to a portion of the connecting portion 430 that forms a space that is closed by the contact portion 440, 2 space part 452 means a part of the connection part 430 forming a space which is closed by the tightly connecting part 440 and the tube 300. [

The outer space of the space between the first surface portion 410 and the second surface portion 420 where the tight contact portion 440 is formed is expanded in the first region A1 of the pin 400 to smoothly flow the air The space between the first surface portion 410 and the second surface portion 420 where the tight contact portion 440 is formed is also joined by the tight contact portion 440 and the first space portion 451 And the second space portion 452, as shown in Fig.

The air introduced into the first space portion 451 through the first space portion 451 and the second space portion 452 flows into the first space portion A 1 of the second region A 2 and the third space A 3 451 and the second space portion 452. The second space portion 452 is formed in the first space portion 452 and the second space portion 452,

At this time, the pin 400 is formed with a first louver 460 in the second area A2.

The first louver 460 preferably has a shape for guiding air to a side where the first and second surface portions 410 and 420 are joined to the second region A2 of the fin 400. [

When the heat exchanger 1000 of the present invention is used as the outdoor heat exchanger 1000 of the heat pump system, the first louver 460 is provided with a plurality of louvers 440, The heat exchange performance can be improved.

The first louver 460 is formed such that a first louver 460 formed on the first surface portion 410 is formed parallel to the first surface portion 410 of the third region A3, The first louvers 460 formed on the first region 420 are formed parallel to the second surface 420 of the third region A3, thereby making it possible to smoothly flow the air.

Particularly, when the first louvers 460 are formed parallel to the first surface portion 410 of the third region A3, the air can be easily guided to the inner region of the fin 400, And it is possible to prevent a sudden increase in the amount of pressure drop.

At this time, the pin 400 may further include a second louver 470 in the third region A3.

The heat exchanger 1000 of the present invention can be moved in the height direction of the tube 300 while the air flowing into the fin 400 is moved in the air flow direction by the second louver 470, There is an advantage that heat exchange efficiency with the air can be further increased by increasing the heat transfer area with air.

The second louver 470 includes a second louver 471 and a second louver 472 which are formed in the third region A3 and whose protruding directions are opposite to each other in the air flow direction can do.

4, 5, and 9, the second-1 louver 471 is cut out in a predetermined area in the air flow direction and protruded with reference to the rear side, and the second-2 louvers 471 ) Shows a shape in which a certain rear region is incised and protruded with respect to the front side in the air flow direction.

More specifically, the second louver 471, like the first louver 460,

That is, in the present invention, the meaning of "the direction of protrusion in the airflow direction is opposite to that of the airflow direction" is defined as being guided along the surface forming the second louver 470 in the air flow direction, Which means that the air is moved to another space.

The second louver 471 and the second louver 472 form a third area A3, although not shown. The second louvers 471 and 472 may be formed in various shapes, The first and second louvers 471 and 472 may be alternately protruded from the first surface or the second surface in the height direction of the tube 300, .

The flow of air will be described in detail with reference to a sectional view of the pin 400 shown in Fig. At this time, the flow of air is shown by an arrow.

The air flowing into the first region A1 is moved in the longitudinal direction of the fin 400 (the right direction in FIG. 8) through the space in which the air can flow by forming the adhered portion 440, Air is moved to the inside of the fin 400 through the first louver 460 formed in the second area A2 and the second louver 471 formed in the third area A3, And a part of the air is moved to the outside of the pin 400 through the second 2-2 louver 472.

In other words, the air flowing into the first region A1 moves in the longitudinal direction of the fin 400, and the first louver 460, the second louver 471, and the second louver 472, So that the heat exchanger 1000 of the present invention has an advantage that the air is sufficiently turbulent and the entire heat exchange performance can be improved.

Particularly, in the heat exchanger 1000 of the present invention, the gas-liquid separator 500 is connected by the first connection pipe 510 and the second connection pipe 520, and is used as the outdoor heat exchanger 1000 of the heat pump system .

The gas-liquid separator 500 separates the liquid phase and the vapor phase of the internal heat exchange medium and supplies the liquid phase heat exchange medium, thereby enhancing the condensation efficiency by the supercooling.

The outdoor heat exchanger 1000 may be operated as an evaporator E or as a condenser in a heat pump system. In this case, condensed water may be generated. Since the adhered portion 440 is formed on the upstream side in the direction of the air flow which is likely to be conceived (concentration of the condensed water is concentrated), it is possible to sufficiently secure a space in which air can flow and to prevent deterioration of heat exchange performance have.

More specifically, a practical example in which the heat exchanger 1000 of the present invention is used as a heat pump system as an outdoor heat exchanger will be described.

Since the outdoor heat exchanger 1000 has the same configuration as the heat exchanger 1000 of the present invention, it is denoted by the same reference numeral 1000 in the present specification.

In operation of the heating mode, the outdoor heat exchanger 1000 generates condensed water as it cools the flowing air as it operates as the evaporator E, and is conceived on the fin.

13 and 14 illustrate an air conditioner including a heat pump used in the outdoor heat exchanger 1000 according to the present invention, and show heating and cooling states, respectively.

During the heating, the air conditioner including the heat pump, the refrigerant compressed through the accumulator (A) and the compressor (C) and compressed at high temperature and high pressure is supplied to the indoor heat exchanger 2000 to be condensed to heat the air, The refrigerant is evaporated through the outdoor heat exchanger 1000 of the present invention through the means 3100 and then supplied to the accumulator A and the compressor C again.

13 shows an example in which the auxiliary heaters 2100 are provided together with the indoor heat exchanger 2000. As shown in FIG.

The refrigerant compressed and passed through the accumulator A and the compressor C passes through the indoor heat exchanger 2000 and the outdoor heat exchanger 1000 and then flows through the second expansion means 3200 to the evaporator E, To cool the surrounding air.

The heat exchanger 1000 of the present invention can be used in various other forms besides the air conditioner including the heat pump shown in Figs.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1000: heat exchanger
110: first header tank 120: second header tank
210: inlet pipe 220: outlet pipe
300: tube
400: pin 410: first face
420: second surface portion 430: connection portion
440:
451: first space part 452: second space part
460: First louver
470: second louver 471: second-louver
472: 2-2 louver
A1 to A3: First to third regions
500: gas-liquid separator
510: first connection pipe 520: second connection pipe
E: Evaporator
C: Compressor
A: Accumulator
2000: Indoor heat exchanger
2100: auxiliary heater
3100: first expansion means 3200: second expansion means

Claims (6)

A first header tank (110) and a second header tank (120) spaced apart from each other by a predetermined distance; An inlet pipe 210 connected to the first header tank 110 or the second header tank 120 and through which the heat exchange medium flows, and an outlet pipe 220 discharged; A tube 300 having both ends fixed to the first header tank 110 and the second header tank 120 to form a heat exchange medium flow path; And a fin (400) interposed between the tubes (300), the heat exchanger (1000)
The fin 400 of the heat exchanger 1000
And a connecting portion 430 connecting the first surface portion 410 and the second surface portion 420 to each other to form a first surface portion 410 and a second surface portion 420 of the tube 300, The first surface portion 410, the connection portion 430, the second surface portion 420, and the connection portion 430 are repeated a plurality of times in the longitudinal direction. The first surface portion 410 and the second surface portion 420 are in surface contact with each other to form a bonded portion 440,
A first region A1 in which the tight contact portion 440 is formed; The distance between the first surface portion 410 and the second surface portion 420 increases from the contact portion 440 of the first region A1 toward the air flow direction and the distance between the first surface portion 410 and the second surface portion 420 A second region A2 in which a first louver 460 for guiding air to the inside is formed; And a third region (A3) in which the distance between the first surface portion (410) and the second surface portion (420) is constant along the air flow direction,
Wherein the first region (A1), the second region (A2), and the third region (A3) are sequentially connected in the air flow direction.
delete The method according to claim 1,
The first region A1 of the pin 400
A first space portion 451 and a second space portion 452 through which air can flow are formed on both sides of the tight fitting portion 440 in the longitudinal direction of the first header tank 110 or the second header tank 120 .
delete The method according to claim 1,
The first louvers 460 formed on the first surface portion 410 are formed parallel to the first surface portion 410 of the third region A3,
Wherein the first louver (460) formed on the second surface (420) is formed parallel to the second surface (420) of the third area (A3).
The method of claim 3,
Wherein the fin (400) is formed with a second louver (470) in a third region (A3).

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