KR20080062080A - Fin and tube integral type heat exchanger and method of the same - Google Patents

Abstract

First heat exchanger plate having a fin portion formed integrally between a plurality of first tunnel portions and a plurality of first tunnel portions formed in a curved or inclined surface and formed at regular intervals to facilitate mass production and reduce manufacturing costs. And a second heat exchange plate formed of a plurality of second tunnel portions corresponding to the first tunnel portion, respectively, and a joining portion extending from each of the second tunnel portions and formed to be integrally coupled to the edge of the fin portion. Provided is a fin tube integrated heat exchanger formed in a closed cylindrical shape and comprising a pair of tank members assembled and fixed so that both ends of the first heat exchange plate and the second heat exchange plate each protrude into the inside.

Description

Fin tube integrated heat exchanger and its manufacturing method {Fin and Tube integral type Heat Exchanger and Method of the Same}

1 is an assembled perspective view showing an embodiment of a fin tube integrated heat exchanger according to the present invention.

Figure 2 is an exploded perspective view showing an embodiment of a fin tube integrated heat exchanger according to the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an exploded perspective view illustrating a state in which protrusions are formed on inner surfaces of the first tunnel portion and the second tunnel portion in another embodiment of the fin tube integrated heat exchanger according to the present invention.

5 is an exploded perspective view showing a state in which protrusions are formed on the outer surfaces of the first tunnel portion and the second tunnel portion in another embodiment of the fin tube integrated heat exchanger according to the present invention.

FIG. 6 is an exploded perspective view illustrating a state in which protrusions are formed on inner and outer surfaces of the first and second tunnel portions according to another embodiment of the fin tube integrated heat exchanger according to the present invention.

7 is an exploded perspective view showing a state in which the first tunnel portion and the second tunnel portion are formed in a corrugated tube shape in another embodiment of the fin tube-integrated heat exchanger according to the present invention.

8 is a block diagram showing an embodiment of a method for manufacturing a finned tube integrated heat exchanger according to the present invention.

9 is a block diagram showing another embodiment of a method for manufacturing a finned tube integrated heat exchanger according to the present invention.

The present invention relates to a fin tube integrated heat exchanger and a method for manufacturing the same, and more particularly, is made of a thin film of plastic, easy to mold, suitable for mass production, possible fin tube integrated heat exchanger and greatly reduce the manufacturing cost It is about a method.

In general, a heat exchanger refers to a device that performs heat exchange between a heat medium flowing inside and a heat medium flowing outside. In the case of a refrigeration cycle device, a heat exchanger generally refers to a condenser and an evaporator. It is widely used for function.

In addition, the heat exchanger is used as a device for recovering the heat contained in the indoor air by heat exchange between each other in the process of discharging the indoor air to the outside and inflowing the outdoor air into the room.

The heat exchanger can be classified into various types according to its shape. Among them, a well-known heat exchanger has a fin tube type for inserting a plurality of fins into a tube, and is widely used in various fields such as an air conditioner, a heater, a refrigerator, a radiator, an oil cooler, and the like. .

The fin tube type heat exchanger is configured such that heat exchange is performed between the heat medium inside the tube and the heat medium outside the tube while one heat medium moves inside the tube and another heat medium (air or cooling water, etc.) moves out of the tube while contacting the fin. .

Fin tube type heat exchanger acting as described above is formed to form a thin thin film in order to increase the heat exchange efficiency, it is configured to have a large number of louvers in the fin to widen the contact area with the heat medium and to have a long contact time.

Conventionally, a fin tube type heat exchanger is mainly formed using a metal such as aluminum, copper, or stainless steel, which has excellent thermal conductivity.

Recently, many attempts have been made to fabricate tubes and fins using synthetic resins with improved thermal conductivity that have been developed to reduce material costs.

However, in the case of manufacturing the fin and tube by using a synthetic resin, extrusion molding is mainly used, and thus the process of manufacturing and assembling the fin and the tube, respectively, is complicated, and the manufacturing process is complicated, and the pin and tube are difficult to fix and integrate. Suffer.

In addition, some have attempted to develop a fin tube integrated heat exchanger in which a fin and a tube are integrally formed using aluminum or the like.

Conventional fin tube integrated heat exchanger is expensive and there are many difficulties in the manufacturing process. That is, the conventional fin tube integrated heat exchanger is manufactured by forming a louver by forming a tube formed with a predetermined diameter and a fin integrally formed on the outer circumferential surface of the tube by extrusion molding and pressing the fin at a predetermined interval. .

Therefore, the conventional fin tube integrated heat exchanger is complicated in the manufacturing process and requires additional manpower, such as damage to the tube portion or bending in the fin portion in the press working (partial cutting and bending) process to form a louver. A problem arises. In addition, since the device for the louver processing must be installed separately, there is a problem in that a lot of equipment investment costs and productivity is reduced.

The present invention is to solve the above problems, by molding the half of the pin and tube formed by louver divided into two parts by injection molding and bonded to each other to manufacture the pin and tube in an integrated state, excellent durability and molding It is an object of the present invention to provide an easy and mass-produced fin tube integrated heat exchanger.

Finned tube heat exchanger proposed by the present invention is formed of a curved surface or inclined surface and a first heat exchange consisting of a plurality of first tunnel portion formed with a predetermined interval and the fin portion formed to integrally connect between the plurality of first tunnel portion A plate, a plurality of second tunnel portions each corresponding to the first tunnel portion to form a flow path, and a joint portion formed to extend from each of the second tunnel portions and to be integrally coupled to an edge of the pin portion; It comprises a two heat exchange plate and a pair of tank members formed in a closed cylindrical shape and assembled and fixed so that both ends of the first heat exchange plate and the second heat exchange plate protrude inward.

Fin tube integrated heat exchanger of the present invention comprises a louver is formed by bending three surfaces in the longitudinal direction of the first heat transfer plate on the surface of the fin portion.

The first heat exchange plate, the second heat exchange plate and the tank member are made of a synthetic resin material.

Next, a preferred embodiment of the fin tube integrated heat exchanger according to the present invention will be described in detail with reference to the drawings.

First, according to the first embodiment of the fin tube integrated heat exchanger according to the present invention, as shown in FIGS. 1 to 3, a plurality of first tunnel portions 12 and the plurality of first tunnel portions formed at regular intervals ( The first heat exchange plate 10 having the fin portions 14 formed therebetween, and the plurality of second tunnel portions 22 that correspond to the first tunnel portions 12 to form the flow paths 40, respectively. And a second heat exchanger plate 20 extending from each of the second tunnel portions 22 and having a junction portion 24 formed to be integrally coupled with the edge of the fin portion 14, and the first heat exchanger plate ( 10) and both ends of the second heat exchanger plate 20 each include a pair of tank members 30 which are assembled and fixed to protrude into the interior.

The first heat exchange plate 10 is formed in a rectangular plate shape as a whole.

The first heat exchange plate 10 is preferably formed of a synthetic resin material having a relatively good thermal conductivity, such as polypropylene, and is preferably formed of a thin film having a thickness of 1 mm or less in order to increase the heat transfer rate.

The first heat exchange plate 10 includes a plurality of first tunnel portions 12 formed in a curved surface or an inclined surface and formed parallel to each other at regular intervals, and are formed in a plane and of the plurality of first tunnel portions 12. It comprises a plurality of pin portion 14 is formed by bending both corner ends.

The first tunnel portion 12 may be formed in a semicircular shape or may be formed in various shapes such as a triangle or a quadrangle.

The plurality of pin portions 14 are formed in a plane and extend integrally with the plurality of first tunnel portions 12 interposed therebetween.

A plurality of louvers 16 are formed on the surface of the fin portion 14 to improve heat transfer performance.

The louver 16 is formed in a state in which three surfaces are cut in the longitudinal direction of the pin 14 and bent obliquely.

The louver 16 may be bent upwardly of the first heat exchanger plate 10, or may be bent downwardly of the first heat exchanger plate 10, that is, bent toward the second heat exchanger plate 20.

The louver 16 is preferably formed about 30 to 50 degrees from the pin portion.

When the angle of the louver 16 is 30 degrees or less, air does not flow smoothly between the louvers 16, so that vortex phenomena occur in the air, resulting in a decrease in the transfer effect. If it exceeds, the air passes through each louver 16 as it is, the heat exchanger 1 passing time is shortened and the heat transfer efficiency is lowered.

The second heat exchange plate 20 is formed in a long rectangular plate shape having a narrow width as a whole.

Like the first heat exchange plate 10, the second heat exchange plate 20 is preferably formed of a synthetic resin material having a relatively good thermal conductivity such as polypropylene, and is formed of a thin film having a thickness of 1 mm or less in order to increase the heat transfer rate. It is preferable.

The second heat exchange plate 20 may include a plurality of second tunnel portions 22 formed in a curved surface or an inclined surface and parallel to the first tunnel portion 12 in the longitudinal direction, respectively, and the first tunnel portion. It comprises a junction 24 formed to be coupled to the (12).

The second tunnel portion 22 may be formed in a semi-circular shape formed in a concave curved surface and may be formed in various shapes such as a triangle or a square, but may be formed to correspond to the shape of the first tunnel portion 12. Do.

A state in which the first tunnel portion 12 formed on the first heat exchange plate 10 and the second tunnel portion 22 formed on the second heat exchange plate 20 correspond to each other to form a flow path 40. In the joint portion 24 and the edge of the fin portion 14 is integrally bonded to the heat exchange plate 2 is manufactured.

The junction part 24 is bent at both edges of the second tunnel part 22 to extend integrally.

Preferably, the joining protrusions 26 protruding zigzag in the direction of the first heat exchange plate 10 of the joining part 24 are formed.

As the bonding protrusions 26 are formed, when the first heat exchange plate 10 and the second heat exchange plate 20 are fused, uniform fusion work is possible on the entire surface without biasing to one side and the bonding protrusions ( It is also possible that the flow path 40 formed by combining the first tunnel portion 12 and the second tunnel portion 22 by firmly fixing the fusion surface while melting 26 is firmly fused.

The flow path 40 formed as described above is made to have durability to withstand the internal resistance of the high temperature and high pressure generated when the refrigerant or the fluid is liquefied or vaporized.

The heat exchange plate 2 is formed by being stacked with the pair of tank members 30 interposed therebetween.

The pair of tank members 30 are installed at regular intervals and are formed in a sealed tubular shape so that refrigerant or fluid is collected.

Although the pair of tank members 30 are not shown in the drawings, a connector is formed at one end to allow the refrigerant or fluid to be introduced or discharged, and the heat exchange plate 2 is fitted at the other end so that the heat exchange plate 2 is fitted. The assembling hole 32 of the cross-sectional shape of () is formed.

In addition, although the pair of tank members 30 are not shown in the drawing, a first tank member having one surface opened and an assembling hole 32 having a cross-sectional shape of the heat exchange plate 2 are formed, and the one surface of the first tank member is opened. It further comprises a plate-shaped second tank member for closing.

The pair of tank members 30 are formed so that the refrigerant or fluid flowing into or out of the connector does not flow out between the assembly holes 32.

It is also possible to bond with an adhesive to seal the assembly hole 32 and the heat exchange plate 2 to be sealed, but it is preferable to weld by ultrasonic welding or high frequency welding to withstand the internal resistance of high temperature and high pressure.

And another embodiment of the fin tube integrated heat exchanger according to the present invention, as shown in Figure 4, at a predetermined interval along the longitudinal direction on the inner surface of the first tunnel portion 12 and the second tunnel portion 22 Protruding protrusions 50 are formed.

5, it is also possible to form the projection 50 in the outer surface of the said 1st tunnel part 12 and the 2nd tunnel part 22. As shown in FIG.

6, the protrusions 50 may be formed on both the inner and outer surfaces of the first tunnel portion 12 and the second tunnel portion 22.

The protrusions 50 may be formed in a thin plate shape in the above, may be formed by protruding into a plurality of columnar shapes although not shown in the drawing, and may be formed by forming irregularities in an embossed shape.

As described above, when the protrusions 50 are formed in the first tunnel portion 12 and the second tunnel portion 22, since the surface area for heat exchange is greatly increased, the heat exchange efficiency is improved.

The first tunnel portion 12 and the second tunnel portion 22 may be formed in a corrugated tube shape, as shown in FIG. 7. Even in this case, since the surface area for heat exchange is greatly increased, heat exchange efficiency is improved.

Next will be described a manufacturing method for manufacturing a fin tube integrated heat exchanger according to the present invention configured as described above.

One embodiment of the manufacturing method of the fin tube integrated heat exchanger according to the present invention, as shown in Figure 8, the first tunnel portion 12 and the first tunnel portion formed in a curved or inclined surface formed at a predetermined interval ( 12) a first heat exchanger plate forming step (P10) of simultaneously forming the pin portions 14 integrally connecting therebetween to manufacture the first heat exchanger plate 10, and corresponding coupling with the first tunnel portion 12, respectively. 2nd heat exchange by simultaneously forming the second tunnel portion 22 and the joint portion 24 extending from each of the second tunnel portion 22 and engaging with the edge of the fin portion 14 to form a flow path 40. In the second heat exchange plate forming step (P20) of manufacturing the plate 20 and the first heat exchange plate 10 produced in the first heat exchange plate forming step (P10) in the second heat exchange plate forming step (P20) The second heat exchange plate 20 manufactured is aligned with the positions so that the first tunnel portion 12 and the second tunnel portion 22 correspond to the flow path 40. In the joining step (P30) for manufacturing the heat exchange plate 2 by integrally joining the edges of the junction portion 24 and the fin portion 14 in the, and the heat exchange plate (2) in the tank member 30 formed in a cylindrical shape The assembly step (P40) of a plurality of laminated assembly is made.

The synthetic resin forming the heat exchange plate 2 and the tank member 30 should be excellent in heat resistance and chemical stability for the refrigerant.

Synthetic resins of such materials include polypropylene, polyethylene, polystyrene, polybutylene, polyvinyl chloride, polycarbonate, polyester, nylon (nylon) or the like.

In addition, as the synthetic resin, it is also possible to use engineering plastic, fiber reinforced plastic, or the like.

In addition, the synthetic resin may be used by containing carbon black or metal powder in order to improve thermal conductivity.

The first heat exchange plate forming step (P10) is formed by integrally injection molding a plurality of first tunnel portion 12 formed in a curved or inclined surface and a plurality of fin portions 14 formed in a plane.

The plurality of pins 14 are formed with a plurality of louvers 16 in a state of being bent obliquely in the longitudinal direction.

In the first heat exchange plate 10, a mold for forming a plurality of first tunnel portions 12 and a plurality of fin portions 14 is prepared, and the louver 16 formed in the plurality of fin portions 14 in the mold. And a cavity for forming the protrusion 50 or the corrugated pipe in the first tunnel portion 12 is formed.

The louver 16 is shaped to maintain an angle of approximately 30 to 50 degrees from the pin portion 14.

In addition, the louver 16 may be formed upwardly based on the fin part 14, and partially downwardly, which may be advantageous in terms of heat transfer efficiency. However, the louver 16 may be formed upwardly or downwardly. It is advantageous in terms of cost.

It is also possible to apply a Teflon coating or a release agent to the cavity of the mold to facilitate separation when the molding of the first heat exchanger plate 10 is completed.

As described above, when the plurality of first tunnel portions 12 and the plurality of fin portions 14 on which the louvers 16 are formed are integrally formed, after the formation of the fin portions 14, the louver 16 is cut off and bent. There is no drawback and it is very easy to manufacture.

The second heat exchange plate forming step P20 may include a plurality of second tunnel portions 22 and a junction portion formed to be coupled to the first tunnel portion 12 so as to correspond to the first tunnel portion 12, respectively. 24) is formed by injection molding.

A joining protrusion 26 is formed in the direction of the first heat exchange plate 10 of the joining part 24.

In the second heat exchange plate 20, a mold for forming a plurality of second tunnel parts 22 and a junction part 26 is prepared, and the mold has protrusions 50 or corrugated pipes in the second tunnel part 22. A cavity for forming is formed.

The second heat exchanger plate 20 may be formed in a number corresponding to the first tunnel portion 12 of the first heat exchanger plate 10, and the second tunnel portion 22 and the junction portion 24 may be elongated. After extending and formed, it is also possible to cut and use the length of the first tunnel portion 12.

Since the mounting and molding of the mold can be generally performed by applying various apparatuses used for molding a synthetic resin product, detailed description thereof will be omitted.

The bonding step (P30) is a heat exchange plate by combining the first heat exchange plate 10 and the second heat exchange plate 20 when the molding of the first heat exchange plate 10 and the second heat exchange plate 20 is completed. 2) consists of the process of manufacturing.

In the bonding step (P30) of the junction portion 24 and the pin portion 14 in a state where the first tunnel portion 12 and the second tunnel portion 22 are aligned so as to form a flow path 40 correspondingly. Join the edges integrally.

It is also possible to bond the edge of the joint portion 24 and the pin portion 14 with an adhesive, but it is made to be integrally fused using laser welding or ultrasonic welding to withstand the internal resistance of high temperature and high pressure.

The assembling step (P40) consists of a process of laminating and assembling the heat exchange plate (2) formed in the bonding step (P30) to the tank member 30 formed in a cylindrical shape.

And, another embodiment of the manufacturing method of the fin tube integrated heat exchanger according to the present invention, as shown in Figure 5, the tank member to form a tank member 30 between the bonding step (P30) and the assembling step (P40) It further includes a forming step (P32).

The tank member forming step (P32) may be carried out in a separate process from the step of forming the heat exchange plate (2), but the bonding step (P30) and the assembly step in the manufacturing process of the fin tube integrated heat exchanger according to the present invention It is preferable to carry out between (P40).

The tank member forming step (P32) is formed in a tubular shape, the first tank member having one side opening and the assembling hole 32 having the cross-sectional shape of the heat exchange plate 2 are formed and the opened one side of the first tank member. It is made of a process formed by injection molding the plate-shaped second tank member to be closed.

The end portion of the first tank member may be formed with a connector so that the refrigerant or fluid is introduced or discharged.

In the tank member forming step (P32), the edges of the first tank member and the second tank member are integrally joined in a state in which the second tank member is aligned with the opening surface of the first tank member.

Although it is possible to bond the edges of the first tank member and the second tank member with an adhesive, it is preferable to be integrally fused using laser welding or ultrasonic welding to withstand internal resistance of high temperature and high pressure.

In the above description of the preferred embodiment of the fin tube integrated heat exchanger and its manufacturing method according to the present invention, the present invention is not limited to this, but various modifications within the scope of the claims and the detailed description of the invention and the accompanying drawings It is possible to implement, and this also belongs to the scope of the present invention.

According to the fin tube integrated heat exchanger and the manufacturing method according to the present invention made as described above, since the louver is integrally molded to the fin by one injection molding, the fin and the tube are integrally formed by a method such as fusion, so that the molding is easy. There is an advantage that mass production is possible and the problem that the tube is damaged in the louver manufacturing process does not occur.

In addition, since manufacturing is performed using synthetic resin as compared to manufacturing a heat exchanger with metal, manufacturing cost is greatly reduced and automatic production is possible, thereby reducing manpower shortage by reducing manpower required for production.

Claims (10)

A first heat exchange plate formed of a curved surface or an inclined surface and having a fin portion formed integrally between the plurality of first tunnel portions and the plurality of first tunnel portions formed at predetermined intervals; A second heat exchange plate having a plurality of second tunnel portions corresponding to the first tunnel portion, respectively, and a junction portion extending from each of the second tunnel portions and formed to be integrally coupled to the edge of the fin portion; and, And a pair of tank members formed in a closed cylindrical shape and assembled and fixed so that both ends of the first heat exchange plate and the second heat exchange plate protrude inward. The method according to claim 1, The first heat exchange plate includes a plurality of first tunnel portions formed of a curved surface having a convex shape, and a fin tube integrated heat exchanger including a plurality of fin portions formed in a plane and bent at both edges of the first tunnel portions. group. The method according to claim 1 or 2, Finned tube heat exchanger including a louver formed on the surface of the fin portion is bent three surfaces in the longitudinal direction of the first heat transfer plate. The method according to claim 1, The second heat exchanger plate is formed by bending a plurality of second tunnel portions each having a concave curved surface to correspond to the first tunnel portion, and both corner ends of the second tunnel portion, and being coupled to the first tunnel portion. Fin tube integrated heat exchanger comprising a joint formed to be. The method according to claim 1, The tank member is a fin tube-integrated heat exchanger is formed in the end portion of the heat exchange plate is formed with a connector so that the refrigerant or fluid is introduced or discharged at one end and the heat exchange plate is fitted to the other end. The method according to claim 1, The first heat exchange plate, the second heat exchange plate and the tank member is a fin tube integrated heat exchanger made of a synthetic resin material. The method according to claim 1, And a fin tube integrated heat exchanger including protrusions formed on inner surfaces or outer surfaces of the first and second tunnel portions at predetermined intervals along a length direction. The method according to claim 1, And the first tunnel portion and the second tunnel portion are formed in a corrugated pipe shape. A first heat exchange plate forming step of manufacturing a first heat exchanger plate by simultaneously forming a first or a fin portion which is integrally connected between the first tunnel portion and the first tunnel portion that are formed at a curved surface or an inclined surface, A second heat exchanger plate manufactured by simultaneously forming a second tunnel portion corresponding to each of the first tunnel portions to form a flow path and a joint portion extending from each of the second tunnel portions and joined to an edge of the fin portion at the same time; Forming a heat exchange plate, The second heat exchange plate manufactured in the second heat exchange plate forming step is aligned with the first heat exchange plate formed in the first heat exchange plate forming step so that the first tunnel portion and the second tunnel portion correspond to each other to form a flow path. Bonding step of manufacturing a heat exchanger plate by bonding the edge of the junction and the fin unit integrally; A method of manufacturing a fin tube integrated heat exchanger comprising an assembly step of stacking and assembling a plurality of heat exchange plates on a tank member formed in a tubular shape. The method according to claim 9, Between the joining step and the assembling step, a first tank member having a cylindrical shape and having one side opened, and an assembly hole having a cross-sectional shape of the heat exchange plate formed therein and closing the opened one side of the first tank member to close the open tank. Method for manufacturing a fin tube integrated heat exchanger further comprising the step of forming a tank member for molding the member.

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