KR20180029460A - Laminated type heat exchanger - Google Patents

Abstract

The present invention relates to a laminated heat exchanger for allowing a plurality of plates to be bonded to be formed. According to the present invention, the laminated heat exchanger can be formed to form an additional second bonding unit on an exterior of an outer bonding unit bonded by laminating the plates. Therefore, the laminated heat exchanger can prevent the plates for forming a refrigerant path by bonding of the plates which are incompletely bonded in the outer bonding unit. Thus, tightness of the refrigerant path can be maintained.

Description

[0001] Laminated type heat exchanger [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated type heat exchanger, and relates to a laminated type heat exchanger capable of preventing imperfect bonding at outer joints of laminated plates for forming a refrigerant channel of a heat exchanger, thereby maintaining airtightness of the refrigerant channel.

The conventional laminated heat exchanger is formed by laminating and joining a plurality of tubes 20 in which a pair of plates 40 having a heat exchange medium flow path 46 formed therein are joined together as shown in FIG. And an inlet / outlet tank 10 communicating with the plurality of tubes 40 is formed by the communication holes 48 formed therein. An inlet pipe 12 and an outlet pipe 14 are connected to the tank portions 10 and a pin 30 for improving the heat exchange efficiency is interposed between the tubes 20, Lt; / RTI >

Such conventional stacked heat exchangers are formed such that the outer peripheries of the plates 40 are joined by brazing or the like to maintain the airtightness of the heat exchange medium flow path 46. However, as shown in FIG. 2 and FIG. 3, since the joint portion of the plate is exposed to air or gas outside the outer joint portion during brazing or welding, incomplete joining may occur due to the influence of the surrounding atmosphere. Accordingly, the airtightness of the heat exchange medium flow path is not maintained, so that defective products that leak out of the heat exchange medium can be produced through the portion of the outer joints of the plates that are incompletely joined together, and the durability is reduced due to incomplete joints, .

KR 10-2009-0101008 A (2009.09.24)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a laminated heat exchanger in which plates are stacked to prevent incomplete joining at outer joints, And a heat exchanger.

In order to achieve the above object, the present invention provides a laminated heat exchanger (1000) having a refrigerant passage (C) through which a heat exchange medium flows therein by joining a first plate (130a) and a second plate (130b) The first plate 130a and the second plate 130b may be formed by stacking a first plate 130a and a second plate 130b so as to form a heat exchange medium flow path, 2 plates 130b are joined to each other to form extensions 132 outwardly from the outer first horizontal portions 131 forming the first joint 201 and the extension portions 132 of the first plate 130a A hollow portion 139a is formed between the first plate portion 132 and the extension portion 132 of the second plate 130b and the second joint portion 202 is formed by joining the ends of the extension portions 132 .

In addition, the extended portion 132 is formed with a fine hole 139b for allowing the space 139a to communicate with the outside.

The first horizontal portion 131 of the first plate 130a or the first horizontal portion 131 of the second plate 130b having the first joints 201 may be formed with a recessed notch 139c .

The notches 139c are cut so that the extensions 132 and the second joints 202 forming the space portion 139a which is the outer portion with respect to the notch 139c are removed. do.

Further, the refrigerant passage C is provided with an inner pin 138.

In the stacked heat exchanger 1000 of the present invention, the first plate 330a and the second plate 330b are alternately laminated and joined to form a first medium flow channel C1 through which the first heat exchange medium flows, The first plate 330a and the second plate 330b may be formed of a first plate 330a and a second plate 330b so as to form a flow path of the heat exchange medium, The second plate 330b is joined to each other to form an extended portion 332 extending outward from the outer first horizontal portion 331 forming the first joint portion 401, A hollow portion 339a is formed between the first plate portion 332 and the extended portion 332 of the second plate 330b and the second joint portion 402 is formed by joining the ends of the extended portions 332 .

The first plate 330a and the second plate 330b are formed in a concavo-convex shape in the direction in which the first plate 330a and the second plate 330b are laminated. The first plate 330a and the second plate 330b, 337 are joined to each other to form a flow path of the heat exchange medium.

The chevron 337 disposed at the outermost side of the first plate 330a and the extended portion 332 of the second plate 330b are disposed to face each other with an empty space 339a formed therebetween .

The extended portion 332 of the first plate 330a and the extended portion 332 of the second plate 330b are formed with bent portions 333 bent to one side so that the bent portions 333 are bent And the second joint portion 402 is formed.

The stacked heat exchanger of the present invention is capable of stably bonding the outer joint portions of the plates to be joined to maintain the airtightness of the refrigerant passage with the inner joint portions without being exposed to the external atmosphere, The leakage of the refrigerant can be prevented, and the durability of the heat exchanger can be improved, thereby increasing the service life.

1 is a perspective view showing a conventional stacked-type heat exchanger.
2 and 3 are front sectional views showing a part of a conventional stacked type heat exchanger.
4 is an assembled perspective view of a stacked heat exchanger according to an embodiment of the present invention.
FIG. 5 is a partial cross-sectional view showing a cross section of FIG. 4 cut in the direction AA '. FIG.
6 and 7 are partial cross-sectional views showing the modified embodiments of Fig.
8 and 9 are an assembled perspective view and an exploded perspective view of a stacked heat exchanger according to another embodiment of the present invention.
FIG. 10 is a partial cross-sectional view showing an embodiment of a cross section cut along the line BB 'of FIG. 8;

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

FIG. 4 is an assembled perspective view of a stacked-type heat exchanger according to an embodiment of the present invention, and FIG. 5 is a partial cross-sectional view showing a cross-section taken along line AA 'of FIG.

As shown in the drawing, the laminated heat exchanger 1000 according to an embodiment of the present invention includes a refrigerant passage C in which a heat exchange medium flows through a junction of the first plate 130a and the second plate 130b The first plate 130a and the second plate 130b may be formed by stacking a first plate 130a and a second plate 130b so as to form a heat exchange medium flow path, 2 plates 130b are joined to each other to form extensions 132 outwardly from the outer first horizontal portions 131 forming the first joint 201 and the extension portions 132 of the first plate 130a A space portion 139a is formed between the extension portion 132 of the second plate 130b and the extension portion 132 of the second plate 130b and the ends of the extension portions 132 are joined to form the second joint portion 202 have.

First, the stacked heat exchanger of the present invention includes a plurality of tubes 130 stacked in the height direction and a fin 140 interposed between the tubes 130. The tubes 130 and the fins 140 are coupled to each other, The portion 100 may be formed. The tube 130 constituting the core unit 100 may be formed by joining the first plate 130a and the second plate 130b. At this time, the first horizontal portion 131 is formed in the outer side of the first plate 130a and the second plate 130b in the horizontal direction, which is a plane in the longitudinal direction and the width direction, 130a of the second plate 130b and the first horizontal portions 131 of the second plate 130b are brought into contact with each other and then joined together by brazing or the like to form the first joint 201. The first plate 130a and the second plate 130b may be sealed to each other by a joint between the first plate 130a and the second plate 130b and a refrigerant passage C through which the refrigerant or cooling water, Can be formed. The first plate 130a and the second plate 130b may be formed such that the beads protrude from the inner surface of the first plate 130a and the second plate 130b to the side where the refrigerant channel C is formed, . ≪ / RTI > The first plate 130a and the second plate 130b may protrude the cup portion 136 in a direction opposite to the space in which the coolant channel C is formed and the protruding end portion of the cup portion 136 may be vertically And a part of the protruded end portion may be formed horizontally inward to be coupled to the cup portions 136 of the neighboring tubes 130 so as to be easily joined to each other. The spaces formed by the cup portions 136 of the tubes 130 may be formed to be connected to the inlet tank portion and the outlet tank portion, respectively.

Here, the tube 130 is disposed outside the first horizontal part 131 of the first plate 130a on which the first joint part 201 is formed and the first horizontal part 131 which is the outer side of the second plate 130b Extensions 132 may be formed. The extended portion 132 of the first plate 130a and the extended portion 132 of the second plate 130b are bent to be spaced apart from each other to form a space portion between the extended portions 132 139a. The ends of the extension portions 132 may be joined together to form the second joint portion 202.

The tube 130 formed by joining the first plate 130a and the second plate 130b may be integrally formed so that a space portion 139a, which is an empty space, is disposed outside the refrigerant passage C, The space between the refrigerant passage C and the space portion 139a can be completely sealed by the first joint portion 201. [ In addition, air or other gas may be present in the space portion 139a, and an incomplete joint portion may be formed outside the space portion 139a without being completely sealed or partially joined by the second joint portion 202 . At this time, the first joint portion 201 and the second joint portion 202 may be formed in both the longitudinal direction and the width direction to surround the refrigerant passage C.

Accordingly, the first joint portion 201, which is a portion to be joined by brazing, welding or the like, is formed in the atmosphere of the outside air or gas by the space portion 139a and the second joint portion 202 formed between the extending portions 132 It is possible to prevent incomplete joining from occurring and to form a healthy joined joint so that the first joining portion is completely closed. Thus, it is possible to prevent the heat exchange medium from leaking to the outside through the refrigerant passage (C), to prevent defects in manufacturing due to the defective tube, and to improve the durability of the tube, thereby increasing the service life of the heat exchanger.

The first plate 130a and the second plate 130b may be formed in the same shape and the first plate 130a may be turned upside down to form a second plate 130b. The first plate 130a and the second plate 130b may be formed in different shapes. The inlet pipe may be connected to the inlet tank of the core unit 100 and the outlet pipe may be connected to the outlet tank of the core unit. 111 and the outlet pipe 121 may be fixedly coupled to the plate through brazing or welding. The cooling water introduced from the outside through the inlet pipe 111 can be stored in the inlet tank portion of the core portion 100 and the cooling water flows in the height direction along the inside of the inlet tank portion, C, then collected in the outlet tank portion, flowed back along the outlet tank portion in the height direction, and then discharged through the outlet pipe 121 to the outside. A fin 140 may be interposed between the tubes 130 to improve the heat exchange efficiency. For example, the fin 140 may be formed in a corrugated shape and may be coupled to the tubes 130 by brazing or the like. In addition, the air can flow to pass through the core portion in the width direction of the core portion 100, and air can be configured to exchange heat while passing through the tubes 130.

The extended portion 132 may be formed with a fine hole 139b that allows the space 139a to communicate with the outside.

6, the plates are joined to form a tube, compressed air is supplied from the outside to the space 139a through the fine holes 139b to confirm whether the first joints 201 are fully sealed and sealed . Alternatively, it is also possible to check whether the air is leaked to the outside through the fine holes 139b by supplying compressed air to the refrigerant passage (C), thereby confirming whether the first joint portion 201 is fully sealed and sealed.

A notch 139c is formed in the first horizontal portion 131 of the first plate 130a or the first horizontal portion 131 of the second plate 130b where the first joint portion 201 is formed .

That is, as shown in the drawing, the notches 139c are concavely formed on the outer side surfaces of the first horizontal portions 131 opposite to the facing surfaces of the first horizontal portions 131 so as to form the first joints 201, It can be formed to facilitate cutting. At this time, the notch 139c may be formed as a V-shaped groove, and may be formed in both the first horizontal portions formed or bonded to only one first horizontal portion, and may be formed in various shapes and positions .

The notch 139c is cut so that the extension portions 132 and the second joint portion 202 forming the space portion 139a which is the outer portion with respect to the notch 139c are removed .

That is, the extension portions 132 forming the space portion 139a and the portions where the second joint portions 202 are formed are configured to completely close the first joint portions 201 to seal the space portions 139a, Is not a space through which the heat exchange medium flows, the tube is joined to form a tube, and then the notch 139c is cut to form an extension 132 (see FIG. And the second joint 202 may be removed. Thus, the volume of the tube can be reduced while the first joint is fully bonded. At this time, the outermost portion of the tube 130 may have a part of the notch shape or a cut mark may remain.

Further, the refrigerant passage C may be provided with an inner pin 138.

7, in addition to the fins 140 disposed between the tubes 130, a refrigerant passage C (a space formed between the first plate 130a and the second plate 130b) The inner pin 138 may be provided. At this time, the inner pin 138 may be joined to the tube by brazing or the like.

The inner joint portion 203 may be formed in the tube 130 such that the refrigerant passage C is partitioned between the first joint portions 201.

FIGS. 8 and 9 are an assembled perspective view and an exploded perspective view of a stacked heat exchanger according to another embodiment of the present invention, and FIG. 10 is a partial cross-sectional view showing an embodiment of a cross section taken along line BB 'of FIG.

As shown in the drawings, the stacked type heat exchanger 1000 according to another embodiment of the present invention includes a first plate 330a and a second plate 330b which are alternately stacked and joined to each other, The first plate 330a and the second plate 330b form a flow path of the heat exchange medium. The first plate 330a and the second plate 330b form a flow path of the heat exchange medium. The first plate 330a and the second plate 330b are joined to each other so that the extended portion 332 extends outward from the first horizontal portion 331 forming the first joint portion 401, A hollow space 339a is formed between the extended portion 332 of the first plate 330a and the extended portion 332 of the second plate 330b and the ends of the extended portions 332 are joined, A bonding portion 402 may be formed.

The first plate 330a and the second plate 330b are laminated alternately in a laminated state. The first plate 330a and the second plate 330b are laminated alternately and laminated to form a core part 300, The first medium flow path C1 through which the first heat exchange medium flows and the second medium flow path C2 through which the second heat exchange medium flows may be alternately formed. At this time, the two plates of the first plate 330a and the second plate 330b may be alternately stacked, but two or more plates may be combined and stacked in various forms.

The first plate 330a and the second plate 330b are formed such that the outer edges of the first plate 330a and the second plate 330b are joined to each other to form a flow path of heat exchange media, And an extended portion 332 extends outward from the first horizontal portions 331 where the first joint portion 401 is formed and the extended portion 332 of the first plate 330a and the extended portion 332 of the second plate 330b may be spaced apart from each other so that an empty space 339a is formed therebetween and the ends of the extended portions 332 are joined together to form the second joint 402. [

Thus, the first media channel C1 and the second media channel C1 may be integrally formed so that a space portion 339a, which is an empty space, is disposed outside the first media channel C1 formed by joining the first plate 330a and the second plate 330b. And the space portion 339a, which is an empty space, may be disposed on the outer side of the second chamber C2. The space between the first media channel C1 and the space portion 339a can be completely sealed by the first joint portion 401 and the space between the second media channel C2 and the arm portion 339a can be completely sealed by the first joint portion 401). In addition, air or other gas may be present in the space portion 139a, and an incomplete joint portion may be formed outside the space portion 139a, which is completely sealed or not partially joined by the second joint portion 402 . At this time, the first joint portion 401 and the second joint portion 402 may be formed in both the longitudinal direction and the width direction and surround the first medium passage C1 and the second medium passage C2.

Accordingly, the first joint portion 401, which is a portion to be joined by brazing, welding, or the like, is formed by the space portion 339a and the second joint portion 402 formed between the extended portions 332 in an atmosphere of outside air or gas It is possible to prevent incomplete joining from occurring and to form a healthy joined joint so that the first joining portion is completely closed. Thus, it is possible to prevent the heat exchange medium from leaking to the outside through the heat exchange medium flow paths. In addition, it is possible to prevent defects in manufacturing due to defective tubes and to improve the durability of the tubes, thereby increasing the life of the heat exchanger.

The first plate 330a and the second plate 330b may have a cup portion 336 protruding in a direction opposite to the space forming the heat exchange medium flow path and the protruding end portion of the cup portion 336 may pass through the upper and lower portions A communicating hole may be formed and a part of the protruding end portion of the cup portion 336 may be formed horizontally inward so that the cup portions 336 of neighboring plates can be easily joined and joined. Accordingly, the spaces formed by the cup portions 336 of the plates may be formed to be connected to the inlet tank portion and the outlet tank portion, respectively.

The inlet pipes 311 may be coupled to the inlet tanks of the core unit 300 and the outlet pipes 321 may be coupled to the outlet tanks of the core unit 300, The outlet pipe 311 and the outlet pipe 321 may be fixedly coupled to the plate through brazing or welding.

The first plate 330a and the second plate 330b are formed in a concavo-convex shape in the direction in which the first plate 330a and the second plate 330b are laminated. The first plate 330a and the second plate 330b, 337 may be joined to form an outer first connection part 401 forming a flow path of the heat exchange medium.

That is, as shown in the figure, the first plate 330a and the second plate 330b may be formed with concavo-convex chevrons 337 to form a channel of the heat exchange medium, A portion where the chevron 337 and the chevron 337 formed on the outer periphery of the second plate 330b are in contact with each other may be formed as a first joint portion 401. At this time, the horizontal part of the chevrons 337 at the position where the first joint part 401 is formed may be the first horizontal part 331. Here, Chevron generally means a V-shaped shape, but it may be formed in various shapes or concave.

The chevron 337 disposed at the outermost side of the first plate 330a and the extended portion 332 of the second plate 330b are disposed to face each other with a void portion 339a formed therebetween .

That is, as shown in the drawing, the first plate 330a has a chevron 337 formed on the outer side with respect to the first joint 401, and the second plate 330b is formed on the outer side with respect to the first joint 401 The chevrons 337 are disposed on the outermost side of the first plate 330a and the extended portions 332 of the second plate 330b are disposed to face each other .

The extended portion 332 of the first plate 330a and the extended portion 332 of the second plate 330b are formed with bent portions 333 bent to one side so that the bent portions 333 are bent So that the second joint 402 can be formed.

That is, as shown in the drawing, the extended portion 332 of the first plates 330a and the extended portion 332 of the second plates 330b are formed as bent portions 333 bent to one side, The bent portions 333 can be easily brought into close contact with each other, thereby facilitating the formation of the second bonding portions 402. [ At this time, the bent portion 333 may be formed to be inclined at an obtuse angle with respect to the entire formation plane of the plate.

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. It goes without saying that various modifications can be made.

1000: stacked type heat exchanger
100: core part
111: inlet pipe 121: outlet pipe
130: tube
130a: first plate 130b: second plate
131: first horizontal part 132: extension part
136:
138: Inner pin
139a: space portion 139b: fine hole
139c: notch
C: refrigerant flow path 140: pin
201: first bonding portion 202: second bonding portion
203: inner joint
300: core part
311: inlet pipe 321: outlet pipe
330a: first plate 330b: second plate
331: first horizontal part 332: extension part
333:
336: cup portion 337: chevron
339a:
C: refrigerant flow path
401: first bonding portion 402: second bonding portion

Claims (9)

A stacked heat exchanger in which a plurality of tubes (130) are formed by joining a first plate (130a) and a second plate (130b) to form a refrigerant passage (C) through which a heat exchange medium flows,
The first plate 130a and the second plate 130b are connected to each other through the first plate 130a and the second plate 130b to form a first joint 201, Extensions 132 extend outwardly from the first horizontal portions 131 and are spaced apart from the extended portion 132 of the first plate 130a and the extended portion 132 of the second plate 130b And a second joint part (202) is formed by joining ends of the extension parts (132).
The method according to claim 1,
Wherein the extension part (132) is formed with a space (139a) and a fine hole (139b) communicating with the outside.
The method according to claim 1,
A notch 139c is formed in the first horizontal portion 131 of the first plate 130a or the first horizontal portion 131 of the second plate 130b with the first joint 201 formed thereon. Stacked heat exchanger.
The method of claim 3,
The notches 139c are cut so that the extensions 132 and the second joints 202 forming the space portion 139a which is the outer portion with respect to the notch 139c are removed. heat transmitter.
The method according to claim 1,
And an inner fin (138) is provided in the refrigerant passage (C).
The first plate 330a and the second plate 330b are alternately stacked and joined so that the first medium passage C1 through which the first heat exchange medium flows and the second medium passage C2 through which the second heat exchange medium flows In the stacked heat exchanger,
The first plate 330a and the second plate 330b are connected to each other by a first plate 330a and a second plate 330b to form a first junction 401, An extended portion 332 is extended outward from the first horizontal portion 331 of the first plate 330a and is extended between the extended portion 332 of the first plate 330a and the extended portion 332 of the second plate 330b And a second joint part (402) is formed by joining ends of the extended parts (332).
The method according to claim 6,
The first plate 330a and the second plate 330b have chevrons 337 formed in a concavo-convex shape in the stacking direction. The chevrons 337 of the first plate 330a and the second plate 330b, And a first joint part (401) formed at an outer periphery thereof to form a flow path of the heat exchange medium.
8. The method of claim 7,
A chevron 337 disposed at the outermost side of the first plate 330a and an extended portion 332 of the second plate 330b are disposed to face each other and an empty space 339a is formed therebetween The heat exchanger being disposed in the heat exchanger.
8. The method of claim 7,
The extended portion 332 of the first plate 330a and the extended portion 332 of the second plate 330b are formed with bent portions 333 bent to one side so that the bent portions 333 are joined, 2 junctions (402).

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