JPH11118375A - Tube for heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the strength of a tube surely even when the width of the tube is increased, in the tube for a heat exchanger, used as the heat exchanger for radiator, condenser and the like. SOLUTION: In a tube for heat exchanger, both rims of a continuous first sheet member are turned toward the same direction to obtain a tubular shape and form a main body member 11, in which tubular units 19 are formed on both sides of the flat part 17 of the main body while the opposing surfaces of the tubular units 19 of the main body member 11 are formed so as to be orthogonal to the flat part 17 of main body to form main body partitioning units. An intermediate member 13, formed by bending both rims of a continuous second sheet member to form intermediate partitioning parts at both sides of an intermediate flat unit, is arranged between these main body partitioning units while the first sheet member as well as the second sheet member are formed of the clad material of aluminum and brazing material layers are formed on the outside surfaces of the main body flat units 17 as well as the intermediate flat unit whereby the tube for heat exchanger is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger tube used for a heat exchanger such as a radiator or a condenser.

[0002]

2. Description of the Related Art In general, in a heat exchanger such as a radiator or a condenser, a tube for a heat exchanger is arranged to circulate a fluid in a heat exchange section. Showa 59-97377
The one disclosed in Japanese Patent Application Publication No. JP-A-2006-26095 is known.

FIG. 7 shows a tube for a heat exchanger of this type. The tube for a heat exchanger is formed by bending both edges of a long plate into a tubular shape in the same direction. , A pair of tubular portions 1 are formed adjacent to each other. The facing surface of the tubular portion 1 is bent at a right angle to form a partition 2. On the other hand, in this heat exchanger tube, an aluminum clad material is used for the plate material.

A brazing material layer is formed on the outer surface of the tube in this plate material, and a sacrificial corrosion layer is formed on the inner surface of the tube. The pair of partitions 2 are brazed to each other, and the tip of the partition 2 is brazed to the flat portion 3. In such a heat exchanger tube, the partition 2 is formed at the center of the tube,
The strength of the tube can be improved.
As a result, the fluid is agitated, so that the heat exchange efficiency can be improved.

[0005]

However, in such a conventional heat exchanger tube, if the width W of the tube becomes large, it becomes difficult to secure sufficient tube strength only by the central partition portion 2. However, there is a problem that the durability life of the tube is shortened. The present invention has been made in order to solve such a conventional problem, and an object of the present invention is to provide a heat exchanger tube that can reliably secure the strength of a tube even when the width of the tube is increased. I do.

[0006]

According to a first aspect of the present invention, there is provided a tube for a heat exchanger, wherein both edges of a long first plate are bent in a cylindrical shape in the same direction, and are provided on both sides of a flat portion of a main body. Forming a main body member on which the cylindrical portion is formed, and forming a main body partition portion by forming a facing surface of the cylindrical portion of the main body member at right angles to the flat main body portion; In between, both edges of the long second plate are bent at right angles, and an intermediate member having intermediate partitions formed on both sides of the intermediate flat portion is disposed, and the first plate and the second plate are disposed. Is formed of an aluminum clad material, and a brazing material layer is formed on outer surfaces of the main body flat portion and the intermediate flat portion.

According to a second aspect of the present invention, in the heat exchanger tube of the first aspect, the intermediate partition portion of the intermediate member projects from the intermediate flat portion to integrally form a movement preventing piece. The prevention piece is bent toward the main body partition portion side of the main body member.

(Operation) In the heat exchanger tube of the first aspect, at least one intermediate member is disposed between the main body partition portions of the cylindrical portion formed on both sides of the main body flat portion of the main body member. An intermediate partition of the member is located adjacent to the body partition.

Then, the main body partition portion of the main body member and the intermediate partition portion of the intermediate member are brazed to each other. When a plurality of intermediate members are arranged, the intermediate partition portions of the intermediate members are also brazed to each other. In the tube for a heat exchanger according to claim 2, the movement preventing pieces formed at both ends of the intermediate partition portion of the intermediate member are bent toward the main partition portion side of the main member, whereby the main partition portion of the main member is formed. The intermediate member disposed therebetween is prevented from moving relative to the main body member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment of a heat exchanger tube of the present invention.
The heat exchanger tube comprises a main body member 11 and an intermediate member 1.
3 is formed.

As shown in FIG. 3, the main body member 11 is formed by bending both edges of a long first plate member 15 in the same direction into a cylindrical shape. Cylindrical portions 19 are formed on both sides. The opposing surface of the tubular portion 19 is formed at right angles to the main body flat portion 17 to form a main body partition 21.

On the other hand, the intermediate member 13 is formed by bending both edges of a long second plate member 23 at right angles, and intermediate partition portions 27 are formed on both sides of the intermediate flat portion 25. Then, as shown in FIG. 2, an intermediate partition 27 of the intermediate member 13 is inserted between main body partitions 21 formed on the cylindrical portion 19 of the main body member 11. In this embodiment, FIG.
As shown in (1), movement preventing pieces 29 are formed at both ends of the intermediate member 13 in the longitudinal direction.

The movement preventing piece 29 forms an intermediate partition portion 27 of the intermediate member 13 so as to protrude from the intermediate flat portion 25,
The projection is formed by bending the projection outward at a right angle. Further, in this embodiment, as shown in FIG. 2, the first
The plate member 15 and the second plate member 23 are made of aluminum clad material.

A brazing material layer R is formed on the outer surface of the tube in the main body flat portion 17 of the main body member 11 and the intermediate flat portion 25 of the intermediate member 13. This brazing material layer R is formed on one surface of the core material T, and a sacrificial corrosion layer G is formed on the other surface of the core material T. The above-described heat exchanger tube is provided between the main body partitioning portion 21 formed in the cylindrical portion 19 of the main body member 11 and the intermediate partitioning portion 27 of the intermediate member 13.
Is inserted between corrugated fins constituting the core of the heat exchanger, and brazed in a brazing furnace.

In the heat exchanger tube configured as described above, one intermediate member 13 is provided between the main body partitioning portions 21 of the cylindrical portion 19 formed on both sides of the main body flat portion 17 of the main body member 11. Since it is arranged, in the width direction of the tube, two partition portions are formed at intervals by the main body partition portion 21 and the intermediate partition portion 27, and thus, even when the width of the tube increases. Thus, the strength of the tube can be reliably ensured.

In the above-described heat exchanger tube,
The first plate member 15 and the second plate member 23 are formed of an aluminum clad material, and the main body flat portion 1 of the main body member 11 is formed.
Since the brazing material layer R is formed on the surface of the intermediate member 7 and the intermediate flat portion 25 on the outside of the tube, the main body partitioning portion 21 of the main body member 11 and the intermediate partitioning portion 27 of the intermediate member 13 can be easily and reliably formed. Can be brazed.

Further, in the above-described heat exchanger tube, the movement preventing pieces 29 are provided at both ends of the intermediate member 13 in the longitudinal direction.
In the state where the intermediate member 13 is temporarily assembled to the main body member 11, the intermediate member 1 is
3 can be reliably prevented from shifting in the longitudinal direction. Therefore, for example, when the tube is inserted into the header plate, it is possible to reliably prevent the intermediate member 13 from being displaced with respect to the main body member 11.

In this embodiment, the attachment of the intermediate member 13 to the main body member 11 is performed by the cylindrical portion 1 of the main body member 11.
9, the intermediate member 13 is arranged, and in this state, the movement preventing piece 29 is bent outward at a right angle and fixed by caulking. However, the present invention is not limited to this. For example, before disposing the intermediate member 13 between the tubular portions 19 of the main body member 11, the movement preventing pieces 29 of the intermediate member 13 may The intermediate member 13 in this state may be bent and inserted between the tubular portions 19 of the main body member 11.

FIG. 5 shows a second embodiment of the heat exchanger tube of the present invention. In this embodiment, two intermediate members 13 are provided between the main body partitioning portions 33 of the main body member 31.
Is arranged. The same intermediate members 13 as those of the first embodiment are used for these intermediate members 13.

In the heat exchanger tube of this embodiment,
Since the two intermediate members 13 are arranged between the main body partitioning portions 33 of the main body member 31, even if the width of the tube is larger than that of the first embodiment, the strength of the tube can be reliably ensured. . In this embodiment, the intermediate member 13
In addition, since the same member as the intermediate member 13 of the first embodiment is used, the common use of the intermediate member 13 can be achieved.

FIG. 6 shows a third embodiment of a heat exchanger tube according to the present invention. In this embodiment, a concave portion 21 a is formed in a main body partitioning portion 21 of a main body member 11. The convex portion 27a formed on the intermediate partition portion 27 of the intermediate member 13 is fitted into the concave portion 21a. In the heat exchanger tube of this embodiment, the intermediate member 1 is inserted into the concave portion 21a formed in the main body partition portion 21 of the main body member 11.
Since the projection 27a formed on the third intermediate partition 27 is fitted, the main body member 11 and the intermediate member 13 can be brazed more reliably.

In the second embodiment described above, the two intermediate members 13 are provided between the main body partitioning portions 33 of the main body member 31.
Has been described, but the present invention is not limited to such an embodiment, and three or more intermediate members 1
3 may be arranged. Further, in the above-described embodiment, an example in which the sacrificial corrosion layer G is formed on the inner surface side of the tube has been described. However, the present invention is not limited to such an embodiment, and a radiator through which cooling water flows is provided. In a tube used other than a heat exchanger such as the above, it is not always necessary to form a sacrificial corrosion layer.

[0023]

As described above, in the heat exchanger tube according to the first aspect, at least one intermediate member is provided between the main body partitioning portions of the cylindrical portions formed on both sides of the main body flat portion of the main body member. Is arranged, at least two partition portions are formed at intervals in the width direction of the tube, thereby ensuring the strength of the tube even when the width of the tube is increased. be able to.

Further, the first plate material and the second plate material are formed of aluminum clad material, and a brazing material layer is formed on the outer surface of the tube in the main body flat portion and the intermediate flat portion of the intermediate member. Therefore, the main body partition portion of the main body member and the intermediate partition portion of the intermediate member can be easily and reliably brazed. Further, when a plurality of intermediate members are arranged, the intermediate partition portions of the intermediate members can be easily and reliably brazed.

In the heat exchanger tube according to the second aspect, the intermediate partition portion of the intermediate member projects from the intermediate flat portion to integrally form a movement preventing piece, and the movement preventing piece is directed toward the main body partition portion of the main body member. Because it was folded, at the time of temporary assembly before brazing,
The intermediate member disposed between the main body partition portions of the main body member can be reliably prevented from moving relative to the main body member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a heat exchanger tube of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a perspective view showing a main body member of FIG. 1;

FIG. 4 is a perspective view showing the intermediate member of FIG. 1;

FIG. 5 is an explanatory view showing a second embodiment of the heat exchanger tube of the present invention.

FIG. 6 is an explanatory view showing a third embodiment of the heat exchanger tube of the present invention.

FIG. 7 is a cross-sectional view showing a conventional heat exchanger tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Main body member 13 Intermediate member 15 1st plate material 17 Main body flat part 19 Cylindrical part 21 Main body partition part 23 2nd plate material 25 Intermediate flat part 27 Intermediate partition part 29 Movement prevention piece R Brazing material layer

Claims (2)

[Claims] 1. Both ends of a long first plate member (15) are bent in a cylindrical shape in the same direction, and cylindrical portions (19) are formed on both sides of a main body flat portion (17). The main body member (11) to be formed and the cylindrical portion (1) of the main body member (11)
The opposing surface of 9) is formed at right angles to the main body flat portion (17) to form a main body partition portion (21), and an elongated second partition is formed between the main body partition portions (21). An intermediate member (13) having an intermediate partition (27) formed on both sides of an intermediate flat portion (25) is disposed by bending both edges of the plate (23) at a right angle. 15) and the second plate (23)
Is formed by an aluminum clad material, and a brazing material layer (R) is formed on the outer surfaces of the main body flat portion (17) and the intermediate flat portion (25). 2. The heat exchanger tube according to claim 1, wherein an intermediate partition (27) of the intermediate member (13) projects from the intermediate flat portion (25) to integrally form a movement preventing piece (29). A heat exchanger tube wherein the movement preventing piece (29) is bent toward the main body partition (21) of the main body member (11).