JPH07158999A - Capacitor for air conditioning device and manufacture thereof - Google Patents

Abstract

PURPOSE:To make it possible to form one set of a device and enhance productivity by forming a fastening unit at a proper position in the longitudinal direction so that a thin-walled heat exchanger board is superposed and joined in a tube in the lateral direction. CONSTITUTION:This device comprises an approximately long cylindrically-shaped or approximately long square-shaped tube 2 formed with a sheet-shaped thin- walled heat exchanger board and an inner fin 3 formed with a thin-walled heat exchanger board and installed in the tube 2. Fefrigerant passes through a clearance between the tube 2 and the inner fin 3, thereby exchanging heat. The tube 2 and the inner fin 3 are formed with one sheet of thin-walled heat exchanger board and bent at proper locations. What is more, they are formed in such a fashion that the both side-ends P1 facing each other are positioned inside the tube 2. Furthermore, the cross section shape of the tube 2 is either approximately long cylindrically-shaped or long square-shaped where a fastening unit 11 is formed in the longitudinal direction in such a fashion that the thin- walled heat exchanger board is superposed in the lateral direction and joined in the tube.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser for an air conditioner, which is provided at a low cost, in which a tube and an inner fin are integrally bent and formed by one thin heat exchange plate to improve productivity, and which is provided at a low cost. The present invention relates to a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, a tube having a substantially long cylindrical shape or a substantially rectangular shape formed of a thin plate heat exchange plate, and an inner tube having the thin wall heat exchange plate formed in a substantially wave shape and arranged in the tube. Condenser of air conditioning equipment that consists of fins and performs heat exchange by passing a refrigerant in the gap between those tubes and inner fins is a tube with a substantially long cylindrical shape or a substantially long square shape, and a substantially corrugated inner The fins are formed separately, and the inner fins are inserted in the tube and assembled.

[0003]

However, such a manufacturing process requires at least three devices, that is, a device for molding the tube, a device for molding the inner fins, and a device for assembling them. Each device requires one worker.

Therefore, there is a problem in that the manufacturing cost is high and the costly capacitors are expensive.

In view of the above-mentioned problems and the like, therefore, the present invention improves productivity by forming a tube and inner fins integrally by bending with a single thin-walled heat exchange plate to form a single device. It was created with the aim of improving the cost and thereby providing capacitors at low cost.

[0006]

According to the present invention, in a condenser of an air conditioner, a tube having a substantially long cylindrical shape or a substantially long square shape formed by a thin plate heat exchange plate, and the thin wall heat exchange are provided. In a condenser of an air-conditioning system, which comprises an inner fin formed by forming a plate into a substantially wave shape and arranged in the tube, and performing heat exchange by passing a refrigerant through a gap between the tube and the inner fin, the tube and the inner fin Means that one thin-walled heat exchange plate is appropriately bent and integrally formed, and the opposite side edges thereof are formed so as to be located inside the tube, and the tube has a cross-sectional shape. By forming a caulking portion at a proper position in the longitudinal direction of the substantially long cylindrical shape or the substantially long square shape, the thin heat exchange plates are stacked in the tube in the lateral direction to be in close contact with each other. Above To solve the problem was.

Further, in the method of manufacturing a condenser for an air conditioner, a tube having a substantially long cylindrical shape or a substantially long square shape formed of a thin plate-shaped thin heat exchange plate and the thin wall heat exchange plate are formed into a substantially wavy shape. In the method of manufacturing a condenser for an air-conditioning system, which comprises an inner fin that is molded and arranged in the tube, and heat is exchanged by passing a refrigerant through a gap between the tube and the inner fin, first, one sheet is used. From both ends of the thin-walled heat exchange plate, form a substantially corrugated shape with an appropriate length.The substantially corrugated part is formed as an inner fin, and the part that is not substantially corrugated is formed as a tube constituent part. Bend inward to the extent that it makes contact with the tube component, at that time, form one of the bent corners in a protruding shape and the other in a concave shape, and then Alternatively, the tube forming portion located in the vicinity thereof is bent toward the inside so that the inner fin comes into contact with the inner side of the tube forming portion by using the bent portion as a bent portion, and the bent portions formed into the protruding shape and the concave shape. The above-mentioned problem is solved by forming a close contact by stacking and crimping.

[0008]

In the condenser for an air conditioner and the method for manufacturing the same according to the present invention, first, a thin heat exchange plate is formed into a substantially corrugated shape with appropriate lengths from both side ends, and the corrugated portion is formed into an inner fin. , A portion that is not formed in a substantially wavy shape is formed as a tube constituent portion, and then the inner fin portion is bent inward to the extent that it contacts the tube constituent portion, and at that time, one of the bent corner portions is bent. Protrudingly, the other is formed into a concave shape, and then the inner edge of the inner fin portion is bent toward the inner side until the inner fin contacts the inner side of the tube forming portion with the tube forming portion located at or near the edge portion as a bent portion. Fold and bend, and the bent portions formed in the convex shape and the concave shape are brought into close contact with each other by stacking them together and crimping them into a substantially oblong cylindrical or substantially rectangular tube into a substantially wavy shape. Shape to promote and improve productivity by integrally molded in a series of steps in one single apparatus with a condenser which arranged inner fin.

At that time, the thin-walled heat exchange plates are piled up in the tube in the lateral direction at appropriate positions in the longitudinal direction of the substantially cylindrical shape or the substantially rectangular shape in the sectional shape of the tube. Since the caulking part is formed so as to be in close contact with each other, it is possible to secure a sufficiently sealed state and sufficient strength without expanding even by only bending work, and in terms of function It is unchanged.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

That is, the reference numeral 1 shown in FIGS.
Air-conditioning equipment, in particular, a condenser for an air conditioner for automobiles, which is a tube 2 having a substantially long cylindrical shape or a substantially long square formed by a thin heat exchange plate P having a thin plate shape, and the thin heat exchange plate having a substantially wavy shape. The inner fin 3 formed by molding and arranged in the tube 2
It is formed so that heat can be exchanged by passing a refrigerant through a gap between the inner fin 3 and the inner fin 3.

The tube 2 and the inner fin 3 are integrally formed by bending one thin-walled heat exchange plate P, and the opposite side edges P1 of the tube 2 and the inner fin 3 are formed inside the tube. The tube 2 is formed so as to be positioned.
The thin-walled heat exchange plates P are stacked in the tube 2 in the lateral direction at an appropriate position in the longitudinal direction of the substantially cylindrical shape or the substantially rectangular shape in the cross-sectional shape of FIG. The caulking portion 11 is formed so as to be in close contact with the other.

Here, in the condenser 1 of FIG. 1, the inner fin 3 has a large corrugated shape, and the thin heat exchange plate P is used.
In the condenser 1 of FIG. 2, the inner fin 3 has a fine wavy shape, and the thin heat exchange plate P has a seamless portion. The shape is upward.

In the manufacturing process of the capacitor 1 thus formed, first, as a first process, from both side edges P1 of one unshaped rectangular thin-walled heat exchange plate P shown in FIG. 3 (A). As shown in FIG. 3 (B), an appropriate length, specifically, a length of about 1/6 is formed into a substantially wavy shape, and the substantially wavy portion is not formed into an inner fin 3 or a substantially wavy shape. The portion is formed as the tube forming portion 1a.

Then, as a second step, as shown in FIG.
As shown in (C) and (D), the inner fin 3 portion is bent inward to the extent that it comes into contact with the tube forming portion 1a, and at that time, one of the bent corner portions is formed into the protruding portion 12. , The other is formed in the concave portion 13. This protrusion 12
The concave portion 13 and the concave portion 13 are preferably formed at the time of the first positive, but may be formed at the time of the second step.

Then, as a third step, as shown in FIG.
As shown in (F) and (G), the edges of the inner fin 3 portion, that is, both side edges P of the one thin heat exchange plate P.
1 or the tube forming portion 1a located in the vicinity thereof is used as a bent portion and the inner fin 3 is connected to the tube forming portion 1a.
Bending toward the inside until it comes in contact with the inside, and as the fourth step, as shown in FIGS. 4 (H) and (I), the projecting portion 12 and the recessed portion 13 are overlapped with each other. By caulking, the caulking portion 11 is closely formed.

Here, in the third step, there is a step of bending up the intermediate portion in an inverted V shape, which is performed for positioning in the manufacturing stage, and is finally performed. It is to extend it to the original state again.

Needless to say, the present invention is not limited to the above-mentioned embodiments.

[0019]

According to the present invention thus formed, first, a thin heat exchange plate P is formed into a substantially corrugated shape with appropriate lengths from both side ends, and the substantially corrugated portion is formed into the inner fins 3. , The tube structure portion 1 is a portion that is not formed in a substantially wavy shape.
a, and then the inner fin 3 part is bent inward to the extent that it comes into contact with the tube forming part 1a, and at that time, one of the bent corner parts is formed in a protruding shape and the other is formed in a concave shape. After that, the inner fin 3 is formed into a tube forming portion 1a with the tube forming portion 1a located at the edge of the inner fin 3 portion or in the vicinity thereof being a bent portion.
By bending it toward the inside to the extent that it contacts the inside, and by closely stacking the bent parts that are formed in the protruding shape and the concave shape by matching and crimping, a substantially long cylindrical shape Alternatively, the condenser 1 in which a substantially rectangular tube is formed into a substantially wavy shape and the inner fins 3 are arranged can be integrally formed in one device and in a series of steps, thereby improving productivity. be able to.

At that time, in the cross-sectional shape of the tube 2, the thin-walled heat exchange plate P is formed in the tube 2 at an appropriate position in the longitudinal direction of the substantially cylindrical or substantially rectangular shape in the lateral direction. Since the caulking portion 11 that is in a state of being piled up and being in close contact is formed, it is possible to secure sufficient sealing and strength without expanding even by only bending work, and there is no difference in function from the conventional one. There is no such thing.

As described above, according to the present invention, the tube and the inner fin are integrally bent and formed by one thin-walled heat exchange plate, so that the molding is performed by one device and the productivity is improved. Therefore, various excellent effects such as a capacitor can be provided at low cost can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of another embodiment of the present invention.

FIG. 3 is a process drawing of a first half manufacturing process of an embodiment of the present invention.

FIG. 4 is a process drawing of the manufacturing process of the latter half of the embodiment of the present invention.

[Explanation of symbols]

1 Condenser 1a Tube constituent part 2 Tube 3 Inner fin 11 Crimping part 12 Protruding part 13 Recessed part P Thin heat exchange plate P1 side edge

Claims (2)

[Claims] 1. A tube having a substantially long cylindrical shape or a substantially long rectangular shape formed of a thin plate thin heat exchange plate, and an inner fin formed in the tube by forming the thin wall heat exchange plate into a substantially wavy shape. In a condenser of an air conditioner that performs heat exchange by passing a refrigerant through the gap between the tube and the inner fin, the tube and the inner fin are integrated by bending a thin heat exchange plate as appropriate. The opposite side edges of the tube are formed so as to be located inside the tube, and the tube has a cross-sectional shape that is a proper position in the longitudinal direction of the substantially cylindrical shape or the substantially rectangular shape. The condenser of the air conditioning equipment is characterized in that the thin heat exchange plates are formed with a caulking portion which is stacked and closely adhered in the tube in the lateral direction. 2. A tube having a substantially long cylindrical shape or a substantially long rectangular shape formed of a thin plate thin heat exchange plate, and an inner fin formed in the tube by forming the thin wall heat exchange plate into a substantially wavy shape. In a method for manufacturing a condenser for an air conditioning equipment that performs heat exchange by passing a refrigerant through the gap between the tubes and the inner fins, first of all, from one side edge of one thin heat exchange plate to an appropriate length. To form a substantially corrugated part with inner fins, and the part that is not substantially corrugated to form a tube component, and then move the inner fin part inward until it contacts the tube component. Bending at that time, one of the bent corners is formed in a protruding shape and the other is formed in a concave shape, and then the tube component located at the edge of the inner fin portion or in the vicinity thereof is bent. As a bent portion, bend the inner fin toward the inside to the extent that it contacts the inside of the tube configuration part, and make the protruding and concave bent parts match and stack and crimp A method for manufacturing a condenser for an air conditioning facility, which is characterized by forming the same.