KR20100119246A - Heat exchanger - Google Patents

Abstract

PURPOSE: A heat exchanger is provided to prevent the leakage of the fluid since a bonding part, which is airtightly bonded by the adhesive or the brazing, is formed. CONSTITUTION: A heat exchanger comprises a plurality of duct type tubes(100) and cooling fins(200). The tubes are deposited at given intervals. The cooling fins are installed in a space between the tubes and guide the flow of some fluid to heat-exchange with the other fluid, which flows through the tubes. The tube comprises a flow path, which is formed through the bending of a flat plate. One end and the other end of the flat plate make contact by a given length, are extended to the flow path and a bonding part(180) is formed on one side of the tube. The bonding part is bonded by the brazing and blocks the flow path of the tube from the outside.

Description

Heat exchanger

The present invention relates to a heat exchanger, and more particularly to a heat exchanger that can prevent the external leakage of the fluid flowing in the flow path of the tube, and to improve the heat exchange efficiency by inducing a laminar flow of the fluid.

In general, a heat exchanger refers to a device for performing heat exchange by directly or indirectly contacting two fluids having different temperatures, and the configuration of such a heat exchanger includes a tube through which a flow path is formed and a fluid therebetween, between each tube. It comprises a plurality of cooling fins provided.

A brief description of the general structure of the tube in the configuration of such a heat exchanger is as follows.

First, the tube is appropriately bent to a molding machine such as a forming machine (former) of a plate made of a material such as aluminum, it is molded to form a flow path therein by joining the both ends of the bending.

In this case, as a general method for joining the bent both ends, the soluble material is applied to the surface of the plate to be used in the manufacture of the tube in advance, the banded both ends are bonded to each other by a brazing furnace (brazing furnace) in the state of heating by heating the And a method of joining through brazing joining in which the soluble material is melted and joined.

However, such brazing and adhesive bonding may not be a good bonding state of the joint portion, there is a problem that the fluid or condensate generated during the heat exchange process may leak through a poor bonding state.

As described above, there is a problem in that the heat exchange efficiency is lowered as the flow path of the tube is not closely blocked from the outside, and the economic efficiency is lowered due to the failure and malfunction of the heat exchanger.

In addition, there is a problem in that deformation occurs easily when an external impact occurs due to a narrow joint area in a joining manner for contacting both ends of the bent plate.

In order to solve the above problems, the present invention can prevent the external leakage of the fluid flowing in the flow path by having a junction formed by extending to the flow path side, by inducing a laminar flow of the fluid by the joint protruding toward the flow path An object of the present invention is to provide a heat exchanger capable of improving heat exchange efficiency.

Another object of the present invention is that the inclined surface is formed on both side edges of the tube and the cooling fins are formed differently in the longitudinal center portion and the fin height of both sides can increase the flow rate of the fluid moving the cooling flow path of the cooling fins, heat exchange efficiency To provide a heat exchanger to improve the.

In order to achieve the above object, a heat exchanger according to a preferred embodiment of the present invention and a plurality of duct-type tube is installed to be stacked at a predetermined interval apart from each other, installed in the spaced space between each tube to move through the tube Comprising a cooling fin for guiding the movement of the other fluid to exchange heat with the fluid, the tube is bent a number of times the plate is formed in the flow path inside, one side and the other end of the plate on one side of the tube The junction part which abuts by the predetermined length and extended to the said flow path side is formed.

Here, the tube is bent in a rectangular quadrangular plate to form a flow path inside, the bonding portion is preferably brazed bonding so that the flow path of the tube can be intimately blocked with the outside.

In addition, the joint portion may be adhesively treated by a steel sheet adhesive so that the flow path of the tube may be intimately blocked with the outside.

On the other hand, the tube is bent in an octagonal shape having an inclined surface on both side edges to increase the flow rate of the fluid flowing into the cooling fin side may be provided with an octagonal cross section in the width direction.

At this time, the upper surface portion of the cooling fin is in close contact with the lower surface of the upper tube so that the flow rate of the fluid moving through the tube and the other fluid that exchanges heat in the plurality of tubes are stacked in close contact, the lower surface of the cooling fin The addition is in close contact with the upper surface portion of the lower tube, it is preferable that the fin height of one side and the other side and the longitudinal center portion of the cooling fin is different.

Referring to the effect of the heat exchanger according to the present invention described above are as follows.

First, it is possible to prevent the external leakage of the fluid flowing in the flow path by having a joint closely bonded by an adhesive or brazing.

Second, it is possible to induce a laminar flow of the fluid moving through the flow path by the joint extending to protrude toward the flow path side, thereby improving heat exchange efficiency.

Third, the fabrication and assembly process can be simplified by providing the joint portion and the position guide which are bent to the channel side to be extended, and the convenience of fabrication and assembly can be improved. .

Fourth, inclined surfaces are formed at both side edges of the tube, and cooling fins are formed with different lengths of the central portion in the longitudinal direction and fins on both sides, thereby increasing the flow rate of the fluid moving in the cooling flow path of the cooling fins, thereby significantly improving the heat exchange efficiency. You can increase it.

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

1 is a perspective view schematically showing a heat exchanger according to an embodiment of the present invention, Figure 2 is a perspective view showing a state in which the tube and the cooling fins of the heat exchanger according to an embodiment of the present invention, Figure 3 is Longitudinal cross-sectional view of a tube in a heat exchanger according to one embodiment of the invention.

As shown in Figures 1 to 3, the heat exchanger is preferably made of a tube 100, a cooling fin 200, the front frame 300 and the rear frame 400.

Here, it is preferable that the plurality of tubes 100 having a flow path 190 formed therein are provided at a plurality of spaced apart at predetermined intervals, and the cooling fins 200 are provided between the respective tubes 100. .

In addition, the front frame 300 and the rear frame 400 are coupled to both sides of each tube 100, respectively, to secure the tube 100 and the cooling fins 200.

Here, the tube 100 is bent a plurality of times the plate is formed in the flow path 190, the one side surface portion 130 of the tube 100, one end and the other end of the flat plate abut a predetermined length of the flow path ( 190, the junction 180 extending to the side is formed.

In this case, it is preferable that the tube 100 has a flat plate bent in a rectangular shape to form a flow passage 190 therein.

Although not shown in the drawings, the plate refers to a steel sheet formed to have a predetermined length, width, and thickness as a raw material for manufacturing the tube 100.

In addition, the bonding part 180 is formed on one side portion 130 of the tube 100, and the brazing bonding process may be performed so that the flow path 190 of the tube 100 may be intimately blocked with the outside. It can be bonded by an adhesive for steel sheet.

In this way, by providing the bonding portion 180 closely bonded by an adhesive or brazing, it is possible to prevent the external leakage of the fluid flowing in the flow path.

In detail, the tube 100 is preferably formed by bending a flat plate in the form of a duct, and preferably includes an upper surface portion 120, a side portion 130, a lower surface portion 140, and a junction portion 180. Do.

At this time, it is preferable that the location guide 150 is protrudingly formed on both sides of the upper surface portion 120 and the lower surface portion 140 of the tube 100, the cooling fins 200 between the respective position guides 150 By this position, the coupling position of the cooling fin 200 can be easily grasped. And, through this, assembling can be facilitated during production or when the consumer disassembles and reassembles, thereby improving the assemblability of the heat exchanger.

Here, the position guide 150 is preferably formed by the press working on the tube 100, may be provided separately adhered by brazing and adhesive.

In addition, the tube 100 has a flat plate bent in a rectangular shape to form the upper surface portion 120, the side portion 130 and the lower surface portion 140, wherein the side portion 130 is the upper surface portion 120 And both sides of the bottom surface 140.

Here, it is preferable that one of the side parts 130 is formed with a joint 180 which protrudes and extends by a predetermined length into one end of the plate and the other end of the flat plate by a predetermined length.

At this time, the junction portion 180 is formed on one side portion 130 of the tube 100, it is preferable that the brazing bonding process so that the flow path 190 of the tube 100 can be closely interrelated with the outside, It can be bonded by an adhesive for steel sheet.

In this way, by providing the bonding portion 180 closely bonded by an adhesive or brazing, it is possible to prevent the external leakage of the fluid flowing in the flow path.

In addition, it is possible to induce a laminar flow of the fluid moving through the flow path 190 by the junction 180 extended to protrude toward the flow path 190, thereby improving heat exchange efficiency.

Here, the laminar flow is a surface contact rate at which the fluid is in contact with the inner surface of the flow path 190 is generated by the vortex phenomenon is generated as the fluid is guided to the junction 180 formed to protrude into the flow path 190 in the vertical direction. The flow that can be increased.

In addition, the joining part 180 is bent toward the flow path 190 and is formed to have an extended structure. Unlike the conventional joining one end and the other end of the tube, the joining area is narrowed, and the joining area is increased to increase the joining area. Deformation can be prevented.

Through the flow path 190 of the tube 100 as described above, it is preferable that the fluid inside (for example, high temperature wet air generated after the drying process) is moved.

On the other hand, the tube 100 is preferably spaced apart from each other by a predetermined interval is stacked, a cooling fin 200 is provided in the spaced space between each tube 100.

In addition, the upper side portion 120 and the lower side portion 140 of each tube 100, the location guide 150 is preferably formed to protrude, respectively, the cooling fin 200 is the respective position guide 150 It is preferred to be located between.

Through this, each cooling fin 200 is able to be constantly positioned between each of the tubes (100).

In addition, the cooling fins 200 may have a cross-sectional shape in one direction in a pulse shape, etc. In this case, a plurality of cooling flow paths 220 having a pulse-shaped cross section may be formed, and the cooling flow path ( 220, other fluids (eg, external dry air) can be moved.

In addition, the front and rear frames 300 and 400 are preferably coupled to both sides of the tube 100, through which the tube 100 and the cooling fins 200 can be tightly fixed to each other.

In detail, one side of the tube 100 is coupled to the front frame 300, the other side is preferably coupled to the rear frame 400, in this case, the front frame 300 and the rear frame 400 in the tube Preferably, the inlet part 320 and the outlet part (not shown) of the shape corresponding to both sides of the 100 are formed through.

The inlet 320 and the outlet are preferably formed so as to correspond to the stacking intervals and the number of stacked of the respective tubes 100, through which, the cooling fins 200 are provided between each tube ( Both ends of the 100 may be inserted into each of the inlets 320 and the outlets to be in close contact with each other.

On the other hand, the wet air generated through the drying process in various environments that are not limited to any particular case is guided to the flow path 190 formed in the tube 100 through the inlet 320 is moved through the discharge portion Will be.

At the same time, the dry air introduced from the outside is moved through the cooling passage 220 formed in the cooling fin 200.

Accordingly, the wet air and the dry air introduced from the outside are not mixed with each other but cross-move and indirect heat exchange is performed.

Here, the wet air introduced into the duct 100 after the drying operation is a high temperature, and the dry air flowing into the cooling fin 200 is relatively low temperature, so that the wet air is condensed by heat exchange with the dry air to remove moisture. After being converted into dry air it can be discharged.

Figure 4 is a perspective view showing a state in which the tube and the cooling fins of the heat exchanger according to another embodiment of the present invention, Figure 5 is a longitudinal direction cross-sectional view of the tube in the heat exchanger according to another embodiment of the present invention.

Hereinafter, a heat exchanger according to another embodiment of the present invention will be described with reference to FIGS. 4 and 5.

First, the heat exchanger will be described only for the configuration of the tube and the cooling fin having a different structure from the heat exchanger described with reference to FIGS. 1 to 3, and the rest of the configuration except for the tube and the cooling fin is the same configuration and will be omitted. .

As shown in Figures 4 and 5, the tube 500 of the heat exchanger is formed with a flow path 590 therein, wherein the plurality of tubes 500 are provided spaced apart at predetermined intervals, each of the tubes ( It is preferable that the cooling fins 600 are provided between the 500.

In addition, the front frame (not shown) and the rear frame (not shown) are coupled to both sides of each tube 500, respectively, to secure the tube 500 and the cooling fins 600.

At this time, the front and rear frames (not shown) is preferably provided with a shape corresponding to the inner peripheral surface and the outer peripheral surface on which the tube 500 and cooling fins 600 are stacked.

Here, the tube 500 is bent a plurality of times the plate is formed in the flow path 590 therein, the one side and the other end of the plate 500 in contact with the one end and the other end of the flat plate by a predetermined length the flow path 590. The junction part 580 extended to the side) is formed.

In detail, the tube 100 is bent in an octagonal shape having inclined surfaces 521, 522, 541 and 542 at the corners so as to increase the flow rate of the fluid flowing into the cooling fin 600. It is preferable that it is provided in an octagonal shape.

In this case, the flat plate is not shown in the drawings, but refers to a steel sheet formed to have a predetermined length, width and thickness as a raw material for manufacturing the tube 500.

In addition, the junction part 580 is formed at one side portion 530 of the tube 500, and the brazing junction treatment is preferably performed such that the flow path 590 of the tube 500 can be intimately blocked with the outside. It can be bonded by an adhesive for steel sheet.

In this way, by providing the bonding portion 180 closely bonded by an adhesive or brazing, it is possible to prevent the external leakage of the fluid flowing in the flow path.

In detail, the tube 500 is preferably formed by bending a flat plate in the form of a duct, and preferably includes an upper surface portion 520, a side portion 530, a lower surface portion 540, and a junction portion 580. Do.

At this time, the location guide 550 is preferably formed on both sides of the upper surface portion 520 and the lower surface portion 540 of the tube 500, the cooling fins 600 between the respective position guides 550 By this position, the coupling position of the cooling fin 600 can be easily identified. And, through this, assembling can be facilitated during production or when the consumer disassembles and reassembles, thereby improving the assemblability of the heat exchanger.

Here, the position guide 550 is preferably formed by the press working on the tube 100, may be provided separately adhered by brazing and adhesive or the like.

In addition, the tube 500 is bent in an octagonal flat plate form the upper surface portion 520, the side portion 530 and the lower surface portion 540, wherein the side portion 530 is the upper surface portion 520 And both sides of the lower surface portion 540.

At this time, it is preferable that inclined surfaces 521 and 522 are formed at both sides of the upper surface portion 520, which are bent and connected to one end of the side portion 530, respectively, on both sides of the lower surface portion 540 which are bent and connected to the other end of the side portion 530. It is preferable that the inclined surfaces 541 and 542 are formed.

Here, it is preferable that any one of the side parts 530 is formed with a junction 580 formed by protruding and extending the inner side of the tube 500 by one end and the other end of the flat plate by a predetermined length.

At this time, the junction portion 580 is formed on one side portion 530 of the tube 500, it is preferable that the brazing bonding process so that the flow path 590 of the tube 500 can be intimately blocked with the outside, It can be bonded by an adhesive for steel sheet.

As described above, it is possible to prevent the external leakage of the fluid flowing in the flow path by providing the bonding portion 580 closely bonded by the adhesive or brazing.

In addition, the junction portion 580 extended to protrude toward the flow path 590 may induce a laminar flow of fluid moving through the flow path 590, thereby improving heat exchange efficiency.

Here, the laminar flow is the surface contact rate of the fluid is in contact with the inner surface of the flow path 590 as the fluid is guided to the junction portion 580 formed to protrude into the flow path 590 is distributed in the vertical direction, the vortex phenomenon occurs. It is the flow that can increase the.

In addition, the junction part 580 is bent toward the flow path 590 and is formed to have an extended structure. Unlike the conventional one end and the other end of the tube, the joint area is narrowed to increase the joint area, thereby increasing the joint area. Deformation can be prevented.

On the other hand, the upper surface portion 614 of the cooling fin 600 is in close contact with the lower surface portion 540 of the upper tube 500 in the tube 500 in which the plurality of tubes 500 are stacked, the cooling fin The lower surface portion 612 of the 600 is preferably in close contact with the upper surface portion 520 of the lower tube 500.

That is, the cooling fins 600 are disposed between and closely contacted between the tubes 500, and correspond to upper and lower portions 520 and lower surfaces 540 of the tube 500, and one side and the other side in the longitudinal direction. Pin height is formed differently.

Accordingly, the flow rate of the fluid flowing into the cooling passage 620 of the cooling fin 600 which exchanges heat with the fluid moving through the tube 500 in the plurality of stacked tubes 500 may be significantly increased. It is possible to improve the heat exchange efficiency.

Through the flow path 590 of the tube 500 as described above, it is preferable that the fluid inside (eg, high temperature wet air generated after the drying process) is moved.

At this time, the tube 500 is preferably spaced apart from each other by a predetermined interval is stacked, a cooling fin 500 is provided in the spaced space between each tube 500.

In addition, it is preferable that the location guides 550 protrude from both sides of the upper surface portion 520 and the lower surface portion 540 of each tube 100, and the cooling fins 600 are the respective position guides 550. It is preferred to be located between.

Through this, each cooling fin 600 is able to be constantly positioned between each of the tubes (500).

In addition, the cooling fin 600 may have a cross-sectional shape in one direction in a pulse shape, etc. In this case, a plurality of cooling flow paths 620 having a pulse-shaped cross section may be formed, and the cooling flow path ( 620 allows other fluids (eg, external dry air) to move.

In particular, the cooling fins 600 are disposed between and closely contacted between the tubes 500, but are spaced apart from each other at regular intervals, and the upper surface portion 520 and the lower tube 500 of the upper tube 500 are stacked. Corresponding to the lower surface portion 540 of the longitudinal center portion and the pin height of one side and the other side is formed differently.

Therefore, the flow rate of the fluid flowing through the cooling passage 620 of the cooling fin 600 can be significantly increased, and the heat exchange efficiency of the heat exchanger can be improved.

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention as claimed in the claims. Modifications are possible and such variations are within the scope of the present invention.

1 is a perspective view schematically showing a heat exchanger according to an embodiment of the present invention.

Figure 2 is a perspective view showing a state in which the tube and the cooling fins of the heat exchanger according to an embodiment of the present invention.

Figure 3 is a longitudinal cross-sectional view of the flow path of the tube in the heat exchanger according to an embodiment of the present invention.

Figure 4 is a perspective view showing a state in which the tube and the cooling fins of the heat exchanger according to another embodiment of the present invention.

Figure 5 is a longitudinal cross-sectional view of the flow path of the tube in the heat exchanger according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawing>

100, 500: tube 120, 520: upper part

130, 530: side part 140, 540: bottom part

180, 580: junction 200, 600: cooling fin

521, 522, 541, 542: slope

Claims (5)

And a plurality of duct-type tubes installed to be spaced apart from each other by a predetermined interval, and cooling fins installed in spaced spaces between the tubes to guide the movement of other fluids to exchange heat with the fluid moving through the tubes. By the way, The tube is bent a plurality of times the plate is formed inside the flow path, the heat exchanger, characterized in that one side of the tube is joined to one end and the other end of the plate by a certain length extending to the side of the flow path is formed. The method of claim 1, The tube has a flat plate is bent in a rectangular shape to form a flow path therein, the junction portion is a heat exchanger characterized in that the brazing bonding process so that the flow path of the tube can be intimately blocked with the outside. The method of claim 1, The joint portion is heat-exchanged, characterized in that the adhesive treatment by a steel sheet adhesive so that the flow path of the tube can be closely interlocked with the outside. The method of claim 1, The tube is bent in an octagonal shape having an inclined surface on both side edges so as to increase the flow rate of the fluid flowing into the cooling fin side heat exchanger, characterized in that the cross-section in the octagonal shape is provided. The method of claim 4, wherein The upper surface of the cooling fin is in close contact with the lower surface of the upper tube so that the flow rate of the fluid moving through the tube and other fluids that exchange heat in the plurality of stacked tubes is increased, and the lower surface of the cooling fin is lowered. The heat exchanger characterized in that it is in close contact with the upper surface of the tube, the height of the central portion in the longitudinal direction of the cooling fin and the fin height of one side and the other side is different.

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