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KR101819114B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
KR101819114B1
KR101819114B1 KR1020160032233A KR20160032233A KR101819114B1 KR 101819114 B1 KR101819114 B1 KR 101819114B1 KR 1020160032233 A KR1020160032233 A KR 1020160032233A KR 20160032233 A KR20160032233 A KR 20160032233A KR 101819114 B1 KR101819114 B1 KR 101819114B1
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KR
South Korea
Prior art keywords
tank
tank portion
refrigerant
refrigerant circulation
hole
Prior art date
Application number
KR1020160032233A
Other languages
Korean (ko)
Other versions
KR20170108401A (en
Inventor
최영우
Original Assignee
그린테크주식회사
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Priority to KR1020160032233A priority Critical patent/KR101819114B1/en
Publication of KR20170108401A publication Critical patent/KR20170108401A/en
Application granted granted Critical
Publication of KR101819114B1 publication Critical patent/KR101819114B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger in which a refrigerant supply unit for supplying a refrigerant to a heat exchanger is improved and stably joined at the time of brazing a heat exchange unit.
The heat exchanger of the present invention bypasses the refrigerant supply pipe and bypasses the outlet of the blower so that the refrigerant is directly supplied to the first heat exchange unit located at the blower outlet side to reduce interference due to installation of the heat exchanger .
In the heat exchanger of the present invention, since the first heat exchanging portion and the second heat exchanging portion overlappingly are fixedly coupled to each other by the position fixing means during brazing, the incomplete joining can be prevented or reduced, and the heat exchanging efficiency can be improved.

Description

Heat exchanger

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger in which a refrigerant supply unit for supplying a refrigerant to a heat exchanger is improved and stably joined at the time of brazing a heat exchange unit.

Generally, an air conditioner for cooling or heating indoor air is provided with a heat exchanger in which two heat exchangers are superimposed inside a main body. The heat exchanger is installed in the main body so as to smoothly discharge the condensed water and be inclined to widen the contact area with the air supplied from the blower.

The refrigerant is circulated to the heat exchanging unit on the side remote from the outlet of the blower, and circulates to the heat exchanging unit on the outlet side of the blower. In this process, the refrigerant, which is heated more than the refrigerant flowing in the heat exchanging unit on the side remote from the outlet of the blower, The heat exchanger on the outlet side of the blower through which the superheated refrigerant circulates is first contacted with the air introduced from the outside, thereby reducing the heat efficiency of the heat exchanger.

Korean Patent Publication No. 1999-024603 discloses a heat exchanger used for cooling an air conditioner for an automobile or an engine. Particularly, Korean Patent Publication No. 2002-0045044 discloses a heat exchanger having a baffle for stagnating refrigerant.

On the other hand, the superimposed heat exchangers are bonded to each other by the clad material being applied and brazed to the outer circumferential surfaces which are in contact with each other. However, if the position of the heat exchanger to be overlapped during brazing is not correct or can not be superimposed on an accurate position, fine cracks may be generated on the joint portion where the clad material is not applied, and thus incomplete joining may occur. The incomplete junctions may cause leakage of the refrigerant, and the refrigerant circulation efficiency may decrease as the refrigerant circulation holes through which the refrigerant in the superimposed heat exchanger flows are shifted from each other.

Korean Patent Publication No. 1999-024603: Heat exchanger Korean Patent Publication No. 2002-0045044: Heat exchanger

The present invention provides a heat exchanger capable of improving heat exchange efficiency by supplying refrigerant to a heat exchange unit corresponding to an outlet side of a blower among two heat exchange units installed so as to overlap with each other.

Another object of the present invention is to provide a heat exchanger in which two heat exchanging portions can be overlapped without shifting, and a heat exchanger is prevented from moving during brazing, thereby achieving stable joining.

According to an aspect of the present invention, there is provided a heat exchanger including first and second tank portions arranged in parallel and spaced apart from each other, a plurality of first heat exchangers arranged in parallel and connecting the first and second tank portions, A first heat exchanging unit having tubes and at least one first radiating fin installed between the first tubes to exchange heat with air; And a second radiating fin disposed between the second tubes and connected to third and fourth tank portions coupled in parallel to the first and second tank portions, respectively, and arranged in parallel to each other, A second heat exchanging unit overlapping with the heat exchanging unit; A coolant supply unit that supplies coolant to the first tank unit of the first heat exchange unit installed on a side where air is blown through the third tank unit of the second heat exchange unit; At least one first tank section refrigerant circulation hole formed in the first tank section and extending in the direction of the third tank section overlapping in the inner space of the first tank section and a second tank section refrigerant circulation hole formed through the third tank section in the direction of the first tank section, A first tank-side refrigerant circulation hole communicating with the first tank-side refrigerant circulation hole; And a position fixing means for fixing the superposition state of the first and second heat exchange portions so that the first and third tank portion refrigerant circulation holes are aligned with each other when the first heat exchange portion and the second heat exchange portion are overlapped and brazed, .

Wherein the refrigerant circulation unit includes a first baffle that divides an internal space of the first tank unit into a first space in which the refrigerant is supplied and a second space in which the first tank refrigerant circulation hole is formed, And a second baffle dividing a space into a third space on the side where the third tank refrigerant circulation hole is formed and a fourth space on the side where the refrigerant discharge port from which the refrigerant is discharged is formed.

The position fixing means includes first and second projections formed on one side and the other side of the first tank side refrigerant circulation hole and protruding toward the third tank portion and first and second projections formed on the other side of the third tank corresponding to the first and second projections, The first and second protrusion insertion portions are drawn in a direction in which one side and the other side of the secondary refrigerant circulation hole are separated from each other and are drawn in corresponding to the first and second protrusions so that the first and second protrusions can be inserted.

Wherein the first tank portion has a first solvent receiving groove formed around the first tank portion refrigerant circulation hole so as to extend inward of the first tank portion to widen the bonding area of the solvent to be melted during brazing, The tank portion has a second solvent receiving groove which is drawn inwardly of the third tank portion around the third tank portion refrigerant circulation hole and is formed at a position corresponding to the first solvent receiving groove.

The position fixing means includes third and fourth protrusions formed on both sides of the first tank portion refrigerant circulation hole edge in the direction orthogonal to the first and second protrusions to protrude toward the third tank portion, And the third and fourth protrusions are inserted in the third tank portion refrigerant circulation holes so as to be perpendicular to the second tank portion refrigerant circulation holes and inserted into the third and fourth protrusions so that the third and fourth protrusions can be inserted, 4 protrusion insertion portions.

The coolant supply unit includes a first through hole formed at one side of the third tank portion, a second through hole formed at the other side of the third tank portion corresponding to the first through hole, A third through hole formed in the first tank portion at a position corresponding to the second through hole and a third through hole inserted into the first and second through holes and connected to the first tank through a third through hole, The coolant supply pipe may have an outer diameter enlarged portion formed on one side of the outer circumferential surface thereof and having a diameter larger than that of the first through hole so as to be engaged with the third tank portion.

The heat exchanger of the present invention bypasses the refrigerant supply pipe and bypasses the outlet of the blower so that the refrigerant is directly supplied to the first heat exchange unit located at the blower outlet side to reduce interference due to installation of the heat exchanger .

In the heat exchanger of the present invention, since the first heat exchanging portion and the second heat exchanging portion overlappingly are fixedly connected to each other by the position fixing means during brazing, the incomplete joining can be prevented or reduced, and the heat exchanging efficiency can be improved.

1 is a partial cross-sectional view of an air conditioner to which a heat exchanger according to a first embodiment of the present invention is applied,
Figure 2 is a perspective view of the heat exchanger of Figure 1,
FIG. 3 is a partially cutaway perspective view of the refrigerant supply portion of FIG. 1,
Fig. 4 is a sectional view of the refrigerant supply unit of Fig. 1,
Figure 5 is a partial view of the heat exchanger showing the position fixing means of Figure 1,
FIG. 6 is a partial sectional view of the position fixing means according to the second embodiment of the present invention,
Fig. 7 is a side cross-sectional view of the position fixing means of Fig. 6,
FIG. 8 is a partial sectional view of the position fixing means according to the third embodiment of the present invention,
FIG. 9 is a partial perspective view of the position fixing means according to the fourth embodiment of the present invention.

Hereinafter, a heat exchanger according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show a heat exchanger according to a first embodiment of the present invention. The heat exchanger according to the present invention is applied to an air conditioner separated into an indoor unit and an outdoor unit. The indoor unit is installed in an indoor space such as a company office, a house, and a living room, and blows the cooled air to the indoor space.

The indoor unit 1 according to the present invention is provided with a main body 10, a blower 20, and a heat exchanger 30 according to the present invention.

The main body 10 is provided with an indoor space upright on the floor surface and includes a space for installing the heat exchanger 30 and the blower 20 therein and an air outlet 15 for discharging air to the outside And an air inflow part 17 through which air flows into the lower part. The main body 10 has an example of a rectangular columnar shape, but is not limited thereto.

The blower 20 blows the air introduced through the air inlet 17 to the upper portion of the main body 10 having the air outlet 15. [

The heat exchanger (30) according to the present invention is a portion provided inside the main body (10) with an air discharge portion (15) and a blower (20) interposed therebetween forwardly and downwardly inclined.

The heat exchanger (30) cools the air while absorbing the heat of the air while changing the liquid refrigerant flowing in the heat exchanger into the gas state when the air blown from the blower (20) passes through the heat exchanger (30).

The heat exchanger 30 includes a first heat exchanging unit 40, a second heat exchanging unit 50, a refrigerant supplying unit 60, a refrigerant circulating unit 70, and a position fixing unit 80.

The first heat exchanging part (40) is a plate-shaped part provided adjacent to the outlet of the air blower (20) through which the air is discharged. The first heat exchanging part 40 includes a first tank part 41, a second tank part 43, a first tube 45 and a first radiating fin 47. The first tank portion 41 and the second tank portion 46 are provided with a plurality of first and second tube fitting holes (not shown) spaced from each other at regular intervals and communicating with the inner space. One side of the first tube 45 is installed in the first tube coupling hole of the first tank portion 43 and the other side of the first tube 45 is installed in the second tube coupling hole of the second tank portion 43, Are installed orthogonally to the portions (41, 43). The plurality of first tubes 45 are arranged in parallel at regular intervals to be connected to the first tank portion 41 and the second tank portion 46, respectively. The first tube 45 serves as a passage through which the refrigerant in the first tank portion 41 or the second tank portion 46 can be moved. The plurality of first radiating fins 47 are connected between the first tubes 41 and the first tank 41 and the second tubes 46 through the first tubes 41. The first radiating fins 47 are parts that can increase the cooling effect by thermoelectric conversion and have a corrugated shape in order to widen the heat radiation surface area.

The second heat exchanging part (50) is plate-shaped and is provided on the upper side of the first heat exchanging part (40) so as to be spaced from the blower as compared with the first heat exchanging part.

The second heat exchanging part 50 includes a third tank part 51, a fourth tank part 56, a second tube 55 and a second radiating fin 57.

The third tank portion 51 and the fourth tank portion 56 are in the form of a pipe and are provided with an inner space through which refrigerant can flow, and are spaced apart from each other in parallel. The third tank portion 51 and the fourth tank portion 56 are provided with a plurality of third and fourth tube coupling holes (not shown) spaced from each other at regular intervals and communicating with the inner space. The third and fourth tube fitting holes are formed in a direction parallel to the first and second tube fitting holes formed in the first and second tank portions 41 and 46.

One end of the second tube 55 is installed in the third tube coupling hole of the third tank portion 51 and the other end of the second tube 55 is installed in the fourth tube coupling hole of the fourth tank portion 56, Are installed orthogonally to the portions (51, 56). The plurality of second tubes 55 are arranged in parallel at regular intervals to be connected to the third tank portion 51 and the fourth tank portion 56, respectively. The second tube 55 serves as a passage through which the refrigerant in the third tank portion 51 or the fourth tank portion 56 can be moved.

The plurality of ash dissipating fins 57 are connected to the third tank portion 51 at one side and the fourth tank portion 56 at the other side between the second tubes 55. The second radiating fins 57 are portions that can increase the cooling effect by heat conduction and have a corrugated shape in order to widen the heat radiating surface area.

2, the first heat exchanging unit 40 and the second heat exchanging unit 50 are arranged such that the first tank unit 41 and the third tank unit 51 are in contact with each other and the second tank unit 46 and the fourth And the tank portion 56 is connected to be in contact.

The first tank portion and the third tank portion are in mutual contact with each other, and the second tank portion and the fourth tank portion are respectively coupled by brazing. The clad material is applied and brazed to the surfaces of the first and third tank portions and the second and third tank portions which are in contact with each other, and the clad material is melted and bonded to each other. Here, the clad material may be a clad material in which a core made of an Al-Mn alloy is cladded with a workpiece made of an Al-Si alloy as a solvent to be used in brazing, and is not limited as long as it is a material to which mutually contacting tanks can be joined.

The refrigerant supply unit 60 supplies the refrigerant to the first tank unit 41 of the first heat exchange unit 40 provided on the side where the air is blown through the third tank unit 51 of the second heat exchange unit 50 do.

The refrigerant supply unit 60 supplies the refrigerant to the inside of the first and second heat exchange units 40 and 50 and includes a first through hole 52 formed in one side of the third tank unit 51, A second through hole 56 formed in the other side of the third tank portion 51 in correspondence with the hole 52 and a second through hole 56 formed in the other side of the first tank portion 41 in contact with the third tank portion 51, A third through hole 42 penetratingly formed at a position corresponding to the hole 56 and a second through hole 44 inserted and fixed in the first and second through holes 52 and 56, And a refrigerant supply pipe (61) for supplying the refrigerant to the compressor (41).

3 and 4, the diameters of the first through holes 52 and the second through holes 56 are formed to be equal to the outer diameter of the refrigerant supply pipe 31 for passage of the refrigerant supply pipe 61. [ The diameter of the third through hole 42 is formed to be smaller than the outer diameter of the refrigerant supply pipe 31 for supporting the refrigerant supply pipe 31 so that the refrigerant supply pipe 31 is supported at the edge of the third through hole 102. Accordingly, the end of the refrigerant supply pipe 31 passing through the first and second through-holes 52 and 56 is supported by the edge of the third through-hole 42 to be limited in position. 4, the refrigerant supply pipe 61 is formed at one side of the outer circumferential surface with an outer diameter enlarging portion 67 having a diameter larger than that of the first through hole 52 so as to be engaged with the third tank portion 51 do. The outer diameter enlarging portion 97 is caught by the outer peripheral surface of the third tank portion 51 and the length of the refrigerant supply pipe 61 connected to the first tank portion 41 is limited.

The refrigerant circulation unit 70 includes a first tank refrigerant circulation hole 71, a third tank refrigerant circulation hole 72, a first baffle 74, and a second baffle 75.

The first tank part refrigerant circulation hole 71 is formed on one surface of the first tank part 41 which is in contact with the third tank part 51. In the inner space of the first tank part 41, 51). The first tank portion refrigerant circulation holes 71 are formed in a plurality of spaced apart from each other by a predetermined distance in the longitudinal direction of the first tank portion 41.

The plurality of third tank portion refrigerant circulation holes 72 are formed in one surface of the third tank portion 51 which is in contact with the first tank portion 41 and on the first tank portion 41 on the inner side of the third tank portion 51, Respectively. 5, the plurality of third tank portion refrigerant circulation holes 72 are formed to communicate with a plurality of first tank portion refrigerant circulation holes 71 spaced apart from each other in the longitudinal direction of the first tank portion 41 do.

The first baffle 74 is installed in the first tank portion 41 and has a first space 43 in which the refrigerant is supplied to the inner space of the first tank portion 41 and a second space 43 in the first tank portion refrigerant circulation hole 71, Is formed in the second space (44). The second baffle (75) is installed in the third tank portion, and the inner space of the third tank portion is connected to the third space (54) where the third tank portion refrigerant circulation hole is formed, And a fourth space (53) communicating with the second space (53).

The first and second heat exchanging portions 40 and 50 are overlapped with each other to fix the first and third tank refrigerant circulation holes 71 and 72 to each other when the brazing joint is performed, 1 and the second heat exchanging portions 40, 50 are fixed. The position fixing means 80 includes a first protrusion 81, a second protrusion 85, a first protrusion insertion portion 83, and a second protrusion insertion portion 87.

The first and second projections 81 and 85 are formed on one side and the other side of the first tank refrigerant circulation hole 71 spaced apart from each other in the longitudinal direction of the first tank portion 41, ) Direction.

The first protrusions 81 are cut away from the inner circumferential surface formed by the first tank portion refrigerant circulation holes 71 at a predetermined distance in the direction of one end of the first tank portion 41, (51) so as to protrude from one surface of the first tank portion (41). The second projection 85 formed on the other side of the first tank-side refrigerant circulation hole 71 is also formed in the same manner as the first projection 81. However, the first and second protrusions may be applied to be formed during the injection molding of the first tank portion 41 in addition to this method.

The first and second protrusion insertion portions 83 and 87 are formed in the third tank portion refrigerant circulation hole 72 corresponding to the first and second protrusions 81 and 85, to be. The first and second protruding portions 83 and 87 are formed in such a manner that the first and second protruding portions 81 and 85 protrude in the direction of overlapping the first tank portion 41 and the third tank portion 51, And is inserted and formed corresponding to the first and second projecting portions 81 and 85 so as to be inserted and fixed to the first projecting portion 51.

As shown in FIG. 5, the first and second projections 81 and 85 are formed in the first tank portion 41 and the first and second protrusions 81 and 85, respectively, And the tank-side refrigerant circulation holes 71, respectively. The first and second protrusion insertion portions 83 and 87 are formed in the third tank portion refrigerant circulation holes (hereinafter, referred to as " first tank portion "), which are located outside the third tank portion refrigerant circulation holes spaced from each other in the longitudinal direction of the third tank portion 51 72, respectively.

The first and third tank refrigerant circulation holes 71a and 72a located on the inner side of the first and third tank refrigerant circulation holes are not provided with the position fixing means 80. However, The position fixing means 80 may be applied to each hole.

In the heat exchanger (30) according to the first embodiment of the present invention, when the first heat exchanging portion and the second heat exchanging portion overlap each other, the first projection is inserted and fixed in the first projection inserting portion. Therefore, the positions where the first heat exchanging portion and the second heat exchanging portion are overlapped at the time of brazing can be shifted or can be contacted without shaking.

The heat exchanger 1 according to the present invention supplies refrigerant to the first tank portion 41 located at the outlet side of the blower 20 through the refrigerant supply pipe 61 penetrating the third tank portion 51 do. The refrigerant supplied to the first space 43 of the first tank portion 41 can not be moved to the second space by the first baffle and passes through the first tubes 45 corresponding to the first space 43 And is supplied to the second tank portion 46. The refrigerant supplied to the second tank portion 46 is moved to the second space 44 through the first tubes 45 at positions corresponding to the second space 44 of the first tank portion 41. [ The refrigerant supplied to the second space 44 passes through the first and third tank part refrigerant circulation holes 71 and 72 and is moved to the third space 54 of the third tank part 51. The refrigerant supplied to the third space 54 can not be moved to the fourth space 53 by the second baffle 75 and passes through the second tubes 55 corresponding to the third space 54, 4 tank portion 56, as shown in Fig. The refrigerant supplied to the fourth tank portion 56 is moved to the fourth space 53 through the second tubes 55 at positions corresponding to the fourth space 53 of the third tank portion 51, (90).

The air blown from the blower 20 is primarily exchanged through the first heat exchanging unit 40 and the heat exchanged through the second heat exchanging unit 50 and then discharged through the main body 10.

In this process, the refrigerant supplied from the refrigerant supply pipe (61) is supplied to the first heat exchanging part (40), and after the heat exchange with the air supplied from the blower (20) Heat exchange with the refrigerant passing through the heat exchanging part (50) is performed, so that the cooling efficiency of the air can be increased.

The heat exchanger of the present invention bypasses the refrigerant supply pipe and bypasses the outlet of the blower so that the refrigerant is directly supplied to the first heat exchange unit located at the blower outlet side to reduce interference due to installation of the heat exchanger .

In the heat exchanger of the present invention, since the first heat exchanging portion and the second heat exchanging portion overlappingly are fixedly connected to each other by the position fixing means during brazing, the incomplete joining can be prevented or reduced, and the heat exchanging efficiency can be improved.

6 and 7 illustrate a heat exchanger according to a second embodiment of the present invention. Elements having the same functions as those in the previous drawings are denoted by the same reference numerals.

The heat exchanger according to the second embodiment of the present invention further includes first and second solvent receiving grooves 84 and 86 in the structure of the heat exchanger according to the first embodiment of the present invention.

The first tank portion 41 has a first solvent receiving groove 84 formed around the first tank portion refrigerant circulation hole 71 and formed inwardly of the first tank portion 41. The second tank portion 51 has a second solvent receiving groove 86 formed around the third tank portion refrigerant circulation hole 72 so as to be drawn inward in the second tank portion 51. The first and second solvent receiving grooves 84 and 86 are formed at positions corresponding to each other so that the amount of the solvent (a) to be melted during brazing, that is, the amount of the clad material, can be increased to widen the bonding area of the solvent.

The heat exchanger according to the second embodiment of the present invention can use a larger amount of the clad material than the heat exchanger according to the first embodiment of the present invention, and advantageously has a relatively strong contact with the first heat exchanger and the second heat exchanger Lt; / RTI >

8 shows a heat exchanger according to a third embodiment of the present invention. Elements having the same functions as those in the previous drawings are denoted by the same reference numerals.

8, the heat exchanger according to the third embodiment of the present invention includes a plurality of first tank portion refrigerant circulation holes 71, a first tank portion refrigerant nearest to the upper end of the first tank portion 41, A first projection 81 is formed in the circulation hole and a second projection 85 is formed in the first tank portion refrigerant circulation hole closest to the lower end of the first tank portion 51. The heat exchanger according to the third embodiment of the present invention includes a plurality of third tank portion refrigerant circulation holes 72 in the third tank portion refrigerant circulation hole closest to the upper end of the third tank portion 51, And the second protrusion insertion portion 85 is formed in the third tank portion refrigerant circulation hole closest to the lower end of the third tank portion 51. [

The heat exchanger according to the third embodiment of the present invention can stably fix and bond the first heat exchanging part 40 and the second heat exchanging part 50 at the time of brazing through the position fixing device having the above structure.

9 shows a heat exchanger according to a fourth embodiment of the present invention. Elements having the same functions as those in the previous drawings are denoted by the same reference numerals.

The heat exchanger according to the third embodiment of the present invention further includes third and fourth protrusions 182 and 184 and third and fourth protrusion inserts 188 and 189 in the structure of the heat exchanger according to the first embodiment of the present invention .

The third and fourth protrusions 182 and 184 protrude from both sides of the edge of the first tank portion refrigerant circulation hole 71 in the direction orthogonal to the first and second protrusions 81 and 85 toward the third tank portion 51 do. The third and fourth projections 182 and 184 are formed in the same manner as the first and second projections 81 and 85.

The third and fourth protrusion insertion portions 188 and 189 are formed so as to be perpendicular to the first and second protrusion insertion portions 83 and 87 in the direction away from the edge of the third tank portion refrigerant circulation hole 72. The third and fourth protrusion insertion portions 188 and 189 are formed so as to correspond to the third and fourth protrusions so that the third and fourth protrusions can be inserted and fixed. Therefore, the heat exchanger according to the third embodiment of the present invention allows the first heat exchanging part 40 and the second heat exchanging part 50 to be firmly coupled to each other.

The heat exchanger according to the present invention does not bypass the refrigerant supply pipe but directly supplies the refrigerant to the first heat exchange unit located at the blower outlet side through the heat exchange unit on the side remote from the outlet of the blower, Interference can be reduced.

In the heat exchanger of the present invention, since the first heat exchanging portion and the second heat exchanging portion overlappingly are fixedly connected to each other by the position fixing means during brazing, the incomplete joining can be prevented or reduced, and the heat exchanging efficiency can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, . Accordingly, the scope of the true technical protection of the present invention should be determined by the technical idea of the appended claims.

30: Heat exchanger 40: First heat exchanger
41: first tank portion 43: first space
44: second space 45: first tube
46: second tank portion 47: first radiator pin
50: second heat exchanger 51: third tank
53: fourth space 54: third space
56: fourth tank portion 55: second tubular portion
57: second radiating fin 60: coolant supply portion
61: Refrigerant supply pipe 67: Outer diameter expanding part
70: Refrigerant circulation unit 71: Refrigerant circulation hole in the first tank part
72: Third tank section Refrigerant circulation hole 74: First Baffle
75: Second Baffle 80: Position fixing means
81: first protrusion 83: first protrusion insertion part
85: second projection portion 87: second projection portion insertion portion

Claims (6)

A plurality of first tubes arranged in parallel and connecting the first tank and the second tank, and a plurality of first tubes arranged between the first tubes and the second tubes, A first heat exchanging unit having at least one first radiating fin for exchanging heat with air;
And a second radiating fin disposed between the second tubes and connected to third and fourth tank portions coupled in parallel to the first and second tank portions, respectively, and arranged in parallel to each other, A second heat exchanging unit overlapping with the heat exchanging unit;
A coolant supply unit that supplies coolant to the first tank unit of the first heat exchange unit installed on a side through which the air is blown through the third tank unit of the second heat exchange unit;
At least one first tank section refrigerant circulation hole formed in the first tank section and extending in the direction of the third tank section overlapping in the inner space of the first tank section and a second tank section refrigerant circulation hole formed through the third tank section in the direction of the first tank section, A first tank-side refrigerant circulation hole communicating with the first tank-side refrigerant circulation hole;
And a position fixing means for fixing the superposition state of the first and second heat exchange portions so that the first and third tank portion refrigerant circulation holes are aligned with each other when the first heat exchange portion and the second heat exchange portion are overlapped and brazed, and,
The refrigerant circulation unit
A first baffle dividing an internal space of the first tank portion into a first space to which the refrigerant is supplied and a second space to which the first tank portion refrigerant circulation hole is formed; And a second space partitioned into a third space on the side where the tank-side refrigerant circulation hole is formed and a fourth space on the side where the refrigerant discharge port from which the refrigerant is discharged is formed,
The position fixing means
First and second projections formed on one side and the other side of the first tank part refrigerant circulation hole in the direction of the third tank part and one side of the third tank side refrigerant circulation hole corresponding to the first and second projections And the first and second protrusions inserted into the first and second protrusions corresponding to the first and second protrusions so that the first and second protrusions can be inserted,
Wherein the first tank portion has a first solvent receiving groove formed around the first tank portion refrigerant circulation hole so as to extend inward of the first tank portion to widen the bonding area of the solvent to be melted during brazing,
And the third tank portion has a second solvent receiving groove which is drawn inwardly of the third tank portion around the third tank portion refrigerant circulation hole and is drawn in at a position corresponding to the first solvent receiving groove,
The first protrusions are respectively cut away from the inner circumferential surface defined by the first tank portion refrigerant circulation holes at a predetermined interval in the direction of the first tank portion and bent toward the third tank portion by the cut lengths, Is protruded from one surface of the tank portion,
The second protrusions are respectively cut away from each other in the direction of the other end of the first tank part from the inner circumferential surface formed by the first tank part refrigerant circulation hole and are bent in the direction of the third tank part by the cut length, And is protruded from one surface of the tank portion. delete delete delete 2. The apparatus according to claim 1, wherein the position fixing means
Third and fourth protrusions protruding from both sides of the first tank portion refrigerant circulation hole edge in the direction orthogonal to the first and second protrusions toward the third tank portion,
And the third and fourth protrusions are inserted in a direction away from each other in the third tank portion refrigerant circulation hole orthogonally to the first and second protrusion insertion portions and inserted into the third and fourth protrusions so as to be inserted into the third and fourth protrusions, And a third and a fourth protrusion insertion portion formed. The refrigeration system according to claim 1, wherein the refrigerant supply portion
A first through hole formed through one side of the third tank portion, a second through hole penetrating through the other side of the third tank portion corresponding to the first through hole, A third through hole formed in the tank portion at a position corresponding to the second through hole and a second through hole inserted into the first and second through holes to supply the refrigerant to the first tank through the third through hole And a refrigerant supply pipe,
Wherein the coolant supply pipe has an outer diameter enlarged portion formed on one side of the outer circumferential surface and having a diameter larger than that of the first through hole and hooked to the third tank portion.
KR1020160032233A 2016-03-17 2016-03-17 Heat exchanger KR101819114B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100976130B1 (en) 2003-07-16 2010-08-17 한라공조주식회사 Heat exchanger with receiver drier and manufacturing method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100976130B1 (en) 2003-07-16 2010-08-17 한라공조주식회사 Heat exchanger with receiver drier and manufacturing method thereof

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