JP2006214705A - Tank for aluminum-made heat exchanger and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank for an aluminum-made heat exchanger and its manufacturing method for facilitating manufacture and reducing manufacturing cost. <P>SOLUTION: This tank 1 for the aluminum-made heat exchanger is provided in an end part of a core composed of a tube and a fin. The tank is composed of a header plate 2 in which an end part of the tube is inserted and a tank body 3 like a thin and long box whose header plate 2 side is opened. The tank body 3 is composed of two members 7, 8 to be joined along the longitudinal direction. At least either of two members 7, 8 is formed by drawing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tank provided at an end of a core in an aluminum heat exchanger used in automobiles, construction machines, and the like, and a method for manufacturing the same.

  In recent years, aluminum heat exchangers have been used in automobiles, construction machines, etc. in order to reduce size and weight, reduce costs, improve recyclability, etc. These heat exchangers have a tank at the end of the core. ing.

  This type of conventional aluminum heat exchanger tank is composed of a header plate whose front and rear peripheral edge portions are bent at right angles, and a tank body having an opening on the header plate side. The tank body is composed of a bowl-shaped member having openings at both ends and a lid member capable of closing both the openings, and the bowl-shaped member is formed by drawing.

Then, when manufacturing this aluminum heat exchanger tank, the end of the tube is inserted into the header plate, the hook-shaped member is assembled to the header plate, and both openings of the hook-shaped member are closed by the lid member. Then, the brazing material of each joint is melted and brazed integrally in a high-temperature furnace (for example, see Patent Document 1).
JP 2001-124488 A

  In general, in aluminum heat exchanger tanks, the ratio of the height dimension to the front and rear depth dimensions exceeds 1.3 to 1.4, which is the drawable range, so the entire tank body can be drawn together. There wasn't. Therefore, in the conventional aluminum heat exchanger tank, as described above, it is necessary to braze the lid members to the opening portions at both ends of the bowl-shaped member. However, since it is necessary to form the lid member with high accuracy in order to process the lid member so as to be aligned with the opening portions at both ends of the bowl-shaped member, there is a problem in that it takes time for manufacturing and increases the manufacturing cost. there were.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an aluminum heat exchanger tank that can be easily manufactured and can reduce manufacturing costs, and a method for manufacturing the same.

  The present invention relates to an aluminum heat exchanger tank provided at an end of a core composed of a tube and a fin, the header plate through which the end of the tube is inserted, and an elongated box-like tank in which the header plate is opened The tank body is composed of two members joined along the longitudinal direction, and at least one member of the two members is formed by drawing. To do.

  And preferably, the said tank main body is formed so that the ratio of the height dimension with respect to the front-back depth dimension may become 1.4 or more.

  Further, the two members constituting the tank main body may be formed by dividing the drawn molded member into two parts.

  Furthermore, the tank main body may be constituted by a molded member that is molded by drawing and has an opening on either the front or rear side, and a flat plate member that can close the opening.

  Furthermore, the flange part may be formed in the junction part of the two members which comprise the said tank main body, and the notch part which can engage the said flange part may be formed in the said header plate.

  The present invention also relates to a method for manufacturing an aluminum heat exchanger tank provided at an end of a core composed of tubes and fins, the step of assembling a header plate at the end of the core, And a step of forming a tank main body having one surface opened, and a step of assembling the tank main body to the header plate so as to close the opening surface. .

  Preferably, the step of forming the tank body includes a step of forming the tank body so that a ratio of a height dimension to a front-rear depth dimension is 1.4 or more.

  The step of forming the tank main body may further include a step of forming a molded member by drawing and a step of dividing the molded member into two to form two members constituting the tank main body. Good.

  Further, the step of forming the tank main body may include a step of forming a forming member having an opening on either one of the front and rear sides by drawing and closing the opening with a flat plate member.

  Furthermore, the step of forming the tank main body further includes a step of forming flange portions at joint portions of two members constituting the tank main body, and the step of assembling the tank main body to the header plate includes the header The method may further include a step of engaging the flange portion of the tank main body with the notch portion formed in the plate.

  According to the present invention, since the tank main body is constituted by two members joined along the longitudinal direction, the entire tank main body is integrally formed by drawing regardless of the ratio of the height dimension to the front-rear depth dimension. The opening is not formed at both ends of the tank body. Therefore, it is easy to manufacture, the manufacturing cost can be reduced, and various excellent effects such as an increase in the degree of freedom in designing the tank can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, an aluminum heat exchanger tank according to an embodiment of the present invention will be described with reference to FIG. Here, FIG. 1 is an exploded perspective view showing an aluminum heat exchanger tank according to the present embodiment.

  The aluminum heat exchanger tank 1 is provided at the end of a core (both not shown) made of tubes and fins, and the header plate 2 through which the end of the tube is inserted, and the header plate 2 side being open. The tank main body 3 is mainly configured.

  The header plate 2 includes an elongated flat plate-like substrate portion 4 and a joint portion 5 that is bent at a right angle to the outer peripheral portion of the substrate portion 4. 6 is formed.

  The tank body 3 has an elongated box shape and is composed of a first member 7 and a second member 8 joined along the longitudinal direction. Preferably, the ratio B of the height dimension B to the front-rear depth dimension A / A is formed to be 1.4 or more. Further, flange portions 9 and 10 are formed on the outer peripheral portions of the first member 7 and the second member 8, respectively, and the first member 7 and the second member 8 are joined to each other via the flange portions 9 and 10. The flange portions 9 and 10 can be engaged with the notch portion 6.

  Next, a method for manufacturing the aluminum heat exchanger tank 1 according to the present embodiment will be described with reference to FIG. 1 and FIGS. 2 (a) to 2 (c). Here, Fig.2 (a)-(c) is a perspective view which shows the manufacturing method of the tank 1 for aluminum heat exchangers which concerns on this Embodiment.

  First, as shown in FIG. 2A, the molding member 11 is formed in a top hat shape by drawing in the height direction, and the molding member 11 is divided into two along the center line CL. The member 7 and the second member 8 are formed.

  Next, the tubes are inserted into the header plate 2 and the header plate 2 is assembled to the end portion of the core. Then, as shown in FIGS. 2B and 2C, the first member 7 and the second member 8 are assembled. And the tank body 3 are assembled to the header plate 2 with the flange portions 9 and 10 matched. At this time, since the flange portions 9 and 10 of the first member 7 and the second member 8 are engaged with the notch portion 6 and the tank body 3 is temporarily fixed to the header plate 2, the heat exchanger is assembled and manufactured. The first member 7 and the second member 8 can be reliably prevented from separating, and the assembly and manufacturing operations can be performed easily and reliably.

  Thereafter, the heat exchanger assembled in this manner is placed in a high-temperature furnace, and the brazing material at each joint is melted and integrally brazed and fixed.

  Thus, in the above-described embodiment, since the tank body 3 is constituted by the first member 7 and the second member 8 joined along the longitudinal direction, openings may be formed at both ends. In addition, it is not necessary to close the opening by forming the lid member accurately and brazing. Even if the ratio B / A of the height dimension B to the front-rear depth dimension A is 1.4 or more, it can be formed by drawing. Therefore, the manufacturing becomes easy, the manufacturing cost can be reduced, and the design freedom of the tank body 3 can be increased.

  Note that the shape, structure and manufacturing method of the tank body 3 in the above-described embodiment are merely examples, and various modifications are possible. For example, as shown in FIG. Accordingly, the molding member 12 may have an opening (not shown) formed on one of the front and rear sides (the rear side in FIG. 3), and a flat plate member 13 capable of closing the opening.

It is a disassembled perspective view which shows the tank for aluminum heat exchangers which concerns on embodiment of this invention. (A)-(c) is a perspective view which shows the manufacturing method of the tank for aluminum heat exchangers which concerns on embodiment of this invention. It is a disassembled perspective view which shows another example of the tank for aluminum heat exchangers which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tank 2 Header plate 3 Tank main body 6 Notch part 7 1st member 8 2nd member 9 Flange part 10 Flange part 11 Molding member 12 Molding member 13 Flat plate member

Claims (10)

An aluminum heat exchanger tank provided at the end of a core composed of tubes and fins,
It is composed of a header plate through which the end of the tube is inserted, and an elongated box-shaped tank body opened on the header plate side, and the tank body is composed of two members joined along the longitudinal direction. An aluminum heat exchanger tank, wherein at least one of the two members is formed by drawing. The tank for an aluminum heat exchanger according to claim 1, wherein the tank body is formed so that a ratio of a height dimension to a front-rear depth dimension is 1.4 or more. 3. The aluminum heat exchanger tank according to claim 1, wherein the two members constituting the tank body are formed by dividing a drawn molded member into two parts. 4. The said tank main body is comprised by the shaping | molding member which was shape | molded by drawing processing, and was equipped with the opening part in either the front and back, and the flat plate member which can block | close this opening part. Aluminum heat exchanger tank. The flange part is each formed in the junction part of the two members which comprise the said tank main body, The notch part which the said flange part can engage with is formed in the said header plate. The tank for aluminum heat exchangers according to any one of claims. A method for producing an aluminum heat exchanger tank provided at an end of a core comprising tubes and fins,
Assembling a header plate at the end of the core;
Matching two members along the longitudinal direction to form a tank body with one open surface;
Assembling the tank body to the header plate so that the opening surface is closed;
The manufacturing method of the tank for aluminum heat exchangers characterized by providing. The aluminum heat exchanger tank according to claim 6, wherein the step of forming the tank body includes the step of forming the tank body so that a ratio of a height dimension to a front-rear depth dimension is 1.4 or more. Manufacturing method. 7. The step of forming the tank body further includes a step of forming a molded member by drawing and a step of dividing the molded member into two to form two members constituting the tank body. Or the manufacturing method of the tank for aluminum heat exchangers of 7. 8. The step of forming the tank main body includes a step of forming a molding member having an opening on one of the front and rear sides by drawing and closing the opening with a flat plate member. The manufacturing method of the tank for aluminum heat exchangers as described in 1 .. The step of forming the tank body further includes the step of forming flange portions at the joint portions of the two members constituting the tank body, and the step of assembling the tank body to the header plate is formed on the header plate. The manufacturing method of the tank for aluminum heat exchangers of any one of Claims 6-9 which further includes the process of engaging the flange part of the said tank main body with the made notch part.

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