JPH08200978A - Heat exchange element and manufacture thereof - Google Patents

Abstract

PURPOSE: To improve the productivity and to prevent a second plate from being released by providing a second plate at a first unit member provided with front surface side rib and a rear surface side rib with the connecting rib and the coupling rib by integral molding. CONSTITUTION: A finlike front surface side rib 3 for forming a parallel channel to communicate heat medium is provided at one side of a first plate 2 made of sheet or the like cut in a square shape, a first unit member 4 so provided with a rear surface side rib 3A formed similarly to the front surface side rib as to perpendicularly cross the rib 3 is molded at the rear surface of the first plate 2, and a second plate 5 made of sheet or the like cut in a square shape is inserted to the molded first member 4. A connecting rib 8 and a coupling rib 8a corresponding to the end rib 3a of the rib 3 are molded on the plate 5, and the second plate 5 of the member 4 is provided while molding the rib 8 and the rib 8a corresponding to the end rib 3a of the rib 3 on the second plate 5, and a second unit member 9 is formed. Then, the members 9 are laminated to manufacture a heat exchange element body 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate fin type heat exchange element having a laminated structure and a method for manufacturing the same.

[0002]

2. Description of the Related Art In recent years, plate-fin type heat exchange elements have a wide heat transfer area per unit volume, and are widely used as relatively small and highly efficient heat exchange elements, which have high productivity and good quality. There is an increasing demand for manufacturing methods of heat exchange elements.

Conventionally, the basic structure of this type of heat exchange element has been disclosed in, for example, Japanese Patent Publication No. 47-19960. The configuration will be described below with reference to FIG.

As shown in the figure, a plate 101 formed of a processed paper based on a paper material having both heat conductivity and moisture permeability and partitioning two fluids to be heat-exchanged is made of a paper material similar to the plate 101 to form a double row. Wave-shaped fins 1 forming parallel channels
It was manufactured by adhering it to No. 02 to make a unit member 103 in advance and stacking a plurality of unit members 103 so that the parallel flow paths are alternately orthogonal to each other, but the productivity is not so high and the cost is high. It was something. Therefore, in order to improve the performance and the productivity, it has been disclosed in JP-A-61-18.
The one shown in 6795 has been developed. The configuration will be described below with reference to FIG. 7.

As shown in the drawing, a member corresponding to a fin is formed with a rod-shaped or string-shaped rib 202 made of a non-metallic material having good bonding property with the plate 201, and is formed on the plate 201 at an arbitrary height and pitch. The formed ribs 202 are accurately arranged to form the unit member 203, an adhesive is applied to the end surface of the rib 202 opposite to the plate 201 side, the unit members 203 are laminated and joined to each other to form a heat exchange element. Was being manufactured.

However, it is difficult to manufacture the unit member 203 and to stack the unit members 203 in terms of accuracy, and it is easy to produce defective products, and the adhesive is used, resulting in poor productivity.

Therefore, a method for manufacturing a heat exchange element has been developed as disclosed in Japanese Patent Application Laid-Open No. 3-271696, in which unit members are manufactured by molding to improve productivity. The configuration will be described below with reference to FIG. As shown in the figure, a fin-shaped rib 302 for forming a parallel flow path through which a heat medium flows is provided on one surface of a flat plate plate 301 made of paper or the like, and a similar rib 302 is formed on the back surface as well. The unit members 303 arranged at right angles to each other are molded in an injection molding die, an adhesive is applied to the upper surfaces of the ribs 302 of the unit members 303, and the paper is cut between the unit members 303 and the unit members 303 with a certain size. Cutting plate 304
Was inserted and laminated to manufacture a heat exchange element.

[0008]

In such a conventional method of manufacturing a heat exchange element, since the cutting plate 304 provided between the unit members 303 is adhered by an adhesive, it is difficult to manage the application of the adhesive. However, there is a problem that productivity is not improved so much because defective products are likely to appear.

The present invention solves the above problems, and an object of the present invention is to provide a heat exchange element of high quality and high productivity, and a method of manufacturing the same.

[0010]

In order to achieve the above object, the heat exchange element and manufacturing method of the present invention include a first plate made of paper cut in a rectangular shape and a first plate. A fin-shaped surface side rib provided to form a parallel flow path so that the heat medium flows on one surface of the plate,
A first unit member having a back surface rib provided on the back surface of the first plate in the same manner as the front surface rib so as to be orthogonal to the front surface rib, and a square shape on the surface of the first unit member. A second plate made of cut paper or the like is provided, and a second unit member that is laminated to form a heat exchange element is provided, and the second plate provided at the second unit member is joined by molding means. The rib and the connecting rib are integrally formed and provided.

The second means is to provide a welding portion on the end ribs of the front side ribs formed on the first unit member,
The second plate provided on the unit member is melted by the melting means to melt and weld the welded portion to form the second unit member.

The third means is to provide fin-shaped surface-side ribs for forming parallel flow passages on one surface of the first plate made of paper cut in a rectangular shape so that the heat medium flows. , A first unit in which an inner surface of the first plate is provided with a rear-side rib formed in the same manner as the front-side rib so as to be orthogonal to the front-side rib in the injection molding die. A step of inserting a second plate made of paper cut in a square shape or the like onto the first unit member,
Joining ribs and connecting ribs corresponding to the end ribs of the front side ribs are molded on the second plate in an injection molding die, and the second plate is provided on the first unit member to form the second unit. The method includes a second molding step of forming a member and a laminating step of laminating the second unit member.

The fourth means is provided with a fin-shaped surface-side rib for forming a parallel flow path on one surface of the first plate made of paper cut in a rectangular shape so that the heat medium flows therethrough. A welding portion is provided on the end rib of the front side rib,
A first molding step of molding a first unit member in the injection molding die, the first unit member having a back side rib formed in the same manner as the front side rib so as to be orthogonal to the front side rib on the back side of the plate,
An inserting step of inserting a second plate made of paper or the like cut in a square shape onto the first unit member, and pressing an end portion of the second plate against an end rib of a surface rib by a melting means. A welding step of melting the welding portion to permeate the second plate and welding to form a second unit member;
The method is manufactured by a laminating step of laminating the unit members.

[0014]

According to the present invention, with the construction of the above-mentioned first means, the second plate provided on the first unit member is integrally formed by the forming means to form the second unit member. The unit member is reinforced and becomes stronger.

Further, according to the structure of the second means, the second plate is welded by the melting means to the welded portion provided on the first unit member, so that the second plate is firmly welded. The second plate, which is provided on the base plate, is prevented from peeling off.

Further, according to the method of the third means, the first unit member and the second unit member can be formed in the injection molding die, so that the productivity is improved.

Further, according to the method of the fourth means, the second plate provided on the first unit member is welded in the welding step without using an adhesive. As a result, the bonding is easy and can be surely performed.

[0018]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS.

As shown in the drawing, a fin shape for forming a parallel flow path so that the heat medium flows on one surface of the first plate 2 made of paper or the like cut into a square in the first molding step 1. The first unit member 4 provided with the front side ribs 3 and the back side ribs 3A formed in the same manner as the front side ribs 3 so as to be orthogonal to the front side ribs 3 on the back side of the first plate 2. In the inserting step 6, the second plate 5 made of paper or the like cut in a square shape is inserted on the formed first unit member 4.

Then, in the second molding step 7, the joining ribs 8 and the connecting ribs 8a corresponding to the end ribs 3a of the front side ribs 3 are molded on the second plate 5 while being molded in the injection mold. The second plate 5 is provided on the unit member 4 of
The unit member 9 is formed.

Next, in the laminating step 10, the second unit member 9
Are laminated to manufacture the heat exchange element body 11.

As described above, according to the heat exchange element and the method of manufacturing the same of the first embodiment of the present invention, the first unit member 4 in which the front side rib 3 and the back side rib 3A are provided on the first plate 2 is provided. Is molded by molding means and molded into a first unit member 4
Since the second plate 5 is provided with the joining rib 8 and the connecting rib 8a formed by the forming means, the productivity is improved and the second unit member 9 is reinforced by the joining rib 8 and the connecting rib 8a. . Further, the quality of the second plate 5 is improved because it does not come off.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, in the first molding step 12,
On a fin-shaped surface side rib 14 and an end rib 14a of the surface side rib 14 for forming a parallel flow path so that the heat medium flows on one surface of the first plate 13 made of paper cut in a square shape. A welding portion 15 having a concave groove 15a and a convex portion 15b in cross section is provided on the first plate 13, and a rear surface rib 14A similar to the front surface rib 14 is provided on the rear surface of the first plate 13 so as to be orthogonal to the front surface rib 14. The first unit member 16 is molded, and the second plate 17 made of paper or the like cut in a square shape is inserted on the molded first unit member 16 in the inserting step 18.

Then, in the welding step 19, the ends of the second plate 17 are pressed against the end ribs 14a of the front side ribs 14 by the melting means 20 composed of a heating part or the like, and the welding parts 15 are formed.
The convex portion 15b is melted and permeated into the second plate 17 and welded to form the second unit member 21.

Next, in the laminating step 22, the second unit member 2
1 is laminated to form a heat exchange element.

As described above, according to the heat exchange element and the method of manufacturing the same of the second embodiment of the present invention, the welding portion 15 is provided on the end rib 14a of the front side rib 14 provided on the first unit member 16, Since the second plate 17 is welded to the welded portion 15 by the melting means 20, it is not necessary to use an adhesive agent, and the second plate 17 is surely adhered and the second plate is not peeled off.
The adhesiveness is enhanced and the quality is improved.

Although the melting means 20 of the second embodiment has been described by using the heating portion, it is also possible to melt the welded portion by vibrating energy by using an ultrasonic vibrator. It goes without saying that it is good if there is.

[0029]

As is apparent from the above embodiments, according to the present invention, front side ribs and back side ribs that form parallel flow paths through which the heat medium flows are provided on the front side and the back side of the first plate. The first unit member is formed, and the second plate provided on the first unit member is integrally formed with the joining rib and the connecting rib by the forming unit to form the second unit member, and the second unit is formed. Since the heat exchange element is manufactured by stacking the members, the productivity is improved, and the second plate is prevented from being peeled off by being reinforced and strengthened, so that the quality can be improved. A heat exchange element and a manufacturing method thereof can be provided.

Further, a welding portion is provided on the end ribs of the front side ribs formed on the first unit member, and the second plate provided on the first unit member is melted by the melting means. Since the second unit member is manufactured and configured by welding, it is possible to perform bonding without the need to use an adhesive, which eliminates the work of applying the adhesive, improves productivity, and improves the adhesiveness of the second plate. And the quality is improved.

[Brief description of drawings]

FIG. 1 (a) is a second heat exchange element according to the first embodiment of the present invention.
(B) A perspective view of a first unit member of the heat exchange element of the first embodiment (c) A perspective view of a second unit member of the heat exchange element of the first embodiment (b) d) A perspective view of the heat exchange element of the first embodiment.

FIG. 2 is a block diagram showing a manufacturing process of the heat exchange element of the first embodiment.

FIG. 3A is a perspective view showing a welding means of a first plate of the heat exchange element of the second embodiment. FIG. 3B is a perspective view of a first unit member of the heat exchange element of the second embodiment. c) A perspective view of a second unit member of the heat exchange element of the second embodiment.

FIG. 4 is an enlarged perspective view of a welded portion of the heat exchange element of the second embodiment.

FIG. 5 is a block diagram showing a manufacturing process of the heat exchange element of the second embodiment.

FIG. 6A is a perspective view of a conventional heat exchange element. FIG. 6B is a perspective view of a unit member of the heat exchange element.

FIG. 7A is a perspective view of a heat exchange element of the other example. FIG. 7B is a perspective view of a unit member of the heat exchange element of the other example.

FIG. 8 (a) is a perspective view of a cutting plate of a heat exchange element of the second example of the other, and (b) is a perspective view of a unit member of the heat exchange element of the second example of the other of the same. The perspective view of the unit member which adhere | attached the cutting plate of the heat exchange element of a 2nd example. (D) The perspective view of the heat exchange element of the other 2nd example.

[Explanation of symbols]

 1,12 First molding step 2,13 First plate 3,14 Front side ribs 3A, 14A Back side ribs 3a, 14a End ribs 4,16 First unit member 5,17 Second plate 6,6 18 Inserting Step 7 Second Forming Step 8 Joining Rib 8a Connecting Rib 9,21 Second Unit Member 10,22 Laminating Step 15 Welding Part 19 Welding Step 20 Melting Means

Claims (4)

[Claims] 1. A first plate made of paper or the like cut in a square shape, and a fin-shaped surface provided on one side of the first plate to form a parallel flow path for allowing a heat medium to flow therethrough. A first unit member having a side rib and a back surface rib provided on the back surface of the first plate in the same manner as the front surface rib so as to be orthogonal to the front surface rib; and
A second plate made of paper or the like cut in a rectangular shape on the surface of the unit member, and a second unit member that is laminated to form a heat exchange element, and is provided on the second unit member. A heat exchange element configured such that the second plate is integrally formed with a joining rib and a connecting rib by a molding means. 2. A welding part is provided on an end rib of a front side rib formed on the first unit member, and the second plate provided on the first unit member is melted by the melting means. The heat exchange element according to claim 1, wherein the second unit member is formed by welding. 3. A fin-shaped surface-side rib for forming a parallel flow path is provided on one surface of a first plate made of paper cut in a square shape so as to flow a heat medium, A first molding step of molding, in an injection molding die, a first unit member having a back surface rib formed on the back surface so as to be orthogonal to the front surface rib in the same manner as the front surface rib; Second made of square cut paper etc. on the unit member of
Step of inserting the plate, and a joining rib and a connecting rib corresponding to the end rib of the front side rib are formed on the second plate in an injection molding die, and the first unit member is formed with the second rib. A second plate forming a second unit member
And a method for manufacturing a heat exchange element, which is manufactured by a molding step and a lamination step of laminating the second unit member. 4. A fin-shaped front surface side rib for forming a parallel flow path is formed on one surface of a first plate made of paper cut in a square shape so that a heat medium flows, and an end of the front surface side rib is provided. A first unit member in which a welded portion is provided on the partial rib, and a rear surface side rib formed in the same manner as the front surface side rib so as to be orthogonal to the front surface side rib on the rear surface of the first plate is an injection molding die. A first forming step of forming inside, an inserting step of inserting a second plate made of paper cut in a square shape on the first unit member, and an end portion of the second plate on a front surface side. A welding step of pressing the rib on an end rib of the rib, melting the welded portion by a melting means, permeating the second plate to form a second unit member, and stacking the second unit member. The manufacturing method of the heat exchange element manufactured by a lamination process.