JPH0250088A - Heat exchanger for automobile - Google Patents

Abstract

PURPOSE:To bend the whole of a heat exchanger smoothly and prevent the rupture of fins and/or tubes by a method wherein both ends of a reinforcing plate are separated previously and a multitude of notched parts are formed in the widthwise direction thereof while the part of a core is deformed integrally with the reinforcing plate. CONSTITUTION:Corrugate fins 2 are provided between a plurality of flat tubes 1, 1 arranged in parallel to each other so as to be contacted with the flat tubes 1, 1 while the contacting parts are fixed by brazing to constitute a core. Both ends of respective flat tubes 1 are fixed by brazing to a pair of tanks 4, 4, separated from each other, so as to be liquid-tight. A pair of reinforcing plates 5, made of a metal sheet, is fixed to both of the upper and lower end faces of the core by brazing respectively. One side of the reinforcing plate 5 is contacted with the corrugated fins 2 and is fixed through brazing. The reinforcing plates 5 are separated lengthwisely from each other and a plurality of notched parts 6 is formed from both sides thereof in the widthwise direction thereof. After brazing them respectively, the core is bent widthwisely together with the reinforcing plates 5. According to this method, the bent core may be produced very easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicular heat exchanger for use in curved two-wheeled vehicles, passenger cars, etc., which can have a relatively narrow width.

[Traditional technique]

A heat exchanger for a two-wheeled vehicle has been proposed in which a plurality of flat cores are connected to form a V-shape or the like, thereby reducing the width of the core and improving heat dissipation performance. The purpose of this is to allow it to be mounted on the frame of a two-wheeled vehicle in an optimal manner without the side portions getting in the way.

[Problem to be solved]

However, since such heat exchanger cores are manufactured by connecting a plurality of flat cores, they have the drawback of being troublesome to manufacture and lacking in mass production. Therefore, it was only used for special purposes such as racing.

[Means for solving problems]

Therefore, an object of the present invention is to provide a bending core which eliminates the above-mentioned problems, and the structure thereof is as follows.

That is, a plurality of flat tubes 1 arranged parallel to each other,
A corrugated fin 2 is brought into contact between the fins 1 and 1, and the contact portion is fixed by brazing to form a core 3.

Then, both ends of each flat tube 1 are liquid-tightly brazed and fixed to a pair of tanks 4.4 spaced apart from each other. Then, reinforcing plates 5 made of a pair of metal plates are brazed and fixed to both upper and lower end surfaces of the core 3, respectively. Here, the feature of the present invention is that one surface of the reinforcing plate 5 is brazed and fixed in contact with the corrugated fin 2. At the same time, a plurality of notches 6 are formed in the reinforcing plate 5 so as to be spaced apart from each other in the longitudinal direction thereof and in the width direction from both sides thereof. After each brazing process, the core 3 is curved along with the reinforcing plate 5 in its width direction.

Therefore, according to the present invention, it is possible to provide a highly reliable heat exchanger in which a bent core can be manufactured extremely easily and problems such as fin collapse do not occur.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings. FIG. 1 is a schematic perspective view of a main part of a vehicle heat exchanger used for a two-wheeled vehicle, a passenger car, etc. according to the present invention.

FIGS. 2 and 3 are exploded explanatory views thereof. Further, FIG. 4 is an explanatory diagram showing the usage state of the present vehicle heat exchanger. This heat exchanger is a so-called corrugated fin type heat exchanger, in which a plurality of flat tubes 1 are positioned parallel to each other, and corrugated fins 2 are arranged between them. Then, connect both ends of each flat tube 1 to a tank 4.
Insert and fix into the tube plate. Reinforcement plates 5 are placed on both upper and lower end surfaces of the core 3, and both longitudinal ends of the reinforcement plates 5 are placed in contact with the end surfaces of the tank 4. Both edges of this reinforcing plate 5 are bent in opposite directions, and a plurality of cutouts 6 are formed alternately on both edges. Further, the flat tube 1 and the corrugated fins 2 are made of aluminum, an alloy thereof, or a copper material. and flat tube 1
．． Either one of the corrugated fins 2 is clad with a brazing material in advance, and one of the corrugated fins 2 and the reinforcing plate 5 is also coated with a brazing material,
Alternatively, place wax foil between the two. Then, these are integrally assembled using a jig, and the brazing material is melted in a vacuum furnace to integrally braze and fix each contact portion. Next, an external force is applied to the brazed entire body to bend it in the width direction of the core, thereby deforming the core 3 and reinforcing plate 5 integrally as shown in FIG. This reinforcement plate 5
As described above, a large number of notches 6 are formed in advance in the width direction at both edges at a distance from each other. Further, a boss portion is provided on the plane of the plate 5, and a hole is bored on the side surface. Further, both ends of the reinforcing plate 5 are brazed and fixed to the upper and lower surfaces of the tank 4, and the other parts are brazed and fixed to the curved part of the corrugated fin 2. Therefore, the reinforcing plate 5 itself can be easily bent in the width direction as shown in FIG. Moreover, since the entire structure has already been brazed and fixed as one unit when bending, the mutual relationship between them can be maintained almost constant. Next, as shown in FIG. 3, the support member 7 is attached to the upper surface of the reinforcing plate 5, and both are fastened and fixed by screws or the like (not shown), or both are fixed by welding. Then, the whole is fixed to a frame of a two-wheeled vehicle or the like via a support member 7 or a mounting member attached to the tank 4. Thus, as shown in FIG. 4, the core 3 of the present heat exchanger is located between the front wheel 8 and the reinforcing plate 5. Air flow is generated in the direction of the arrow. Therefore, even though the overall width can be made relatively narrow, airflow can be reliably captured and the heat dissipation effect can be improved.

[Modified example]

It should be noted that the present invention is not limited to the above-mentioned embodiments, and for example, the above-mentioned notches are provided on both edges of only the central portion of the reinforcing plate 5.
The cutout 6 may be formed, only the central portion may be deformed to curve the entire core 3, and the support member 7 may be fixed by welding or the like only to the portion where the cutout 6 is present.

〔Effect of the invention〕

The vehicle heat exchanger of the present invention has the above configuration,
It has the following effects.

This heat exchanger is a heat exchanger in which a core 3 is composed of a flat tube 1 and a corrugated fin 2, reinforcing plates 5 are placed on both the upper and lower end surfaces of the core 3, and the contact portions are brazed in advance. Since the core 3 is curved in the width direction while being fixed, the core can be smoothly curved to create a curved core. Furthermore, it is possible to provide a vehicle heat exchanger that is highly efficient despite its relatively narrow width. That is, this heat exchanger includes a flat tube 1, corrugated fins 2.
Since the reinforcing plates 5 and 5 are integrally brazed and then deformed into a curved shape, the entire structure is smoothly curved while maintaining their mutual relationship, thereby preventing the fins from collapsing and the tube from collapsing. It is possible to provide a heat exchanger with good heat dissipation.

Moreover, since the reinforcing plate 5 of this heat exchanger is brazed to the corrugated fins 2 and has a plurality of notches 6, it can be easily deformed after the reinforcing plate 5 is brazed.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of the main parts of the heat exchanger of the present invention, FIGS. 2 and 3 are exploded explanatory views of the heat exchanger, and FIG. 4 is an explanatory diagram showing the installed state of the heat exchanger. ■...Flat tube 2...Corrugated fin 3
... Core 4 ... Tank 5 ... Reinforcement plate 6 ... Notch part 7 ... Supporting member
8...Front wheel 9...Engine agent Patent attorney Kubo 1) Takumi Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] A plurality of flat tubes (1) arranged parallel to each other (
1) A core (3) having corrugated fins (2) in contact with each other and the contact portions being brazed and fixed therebetween, and a core (3) separated from the left and right and having both ends of each of the tubes (1) liquid-tightly fixed by brazing. A heat exchanger for a vehicle, comprising a pair of tanks (4) (4), and a reinforcing plate (5) made of a pair of metal plates brazed to both upper and lower end surfaces of the core (3), respectively. , one side of the reinforcing plate (5) is brazed and fixed in contact with the corrugated fin (2), and the reinforcing plate (5) is spaced apart from each other in the longitudinal direction and from both edges in the width direction. Forming a plurality of cutout portions (6),
A heat exchanger for a vehicle, wherein the core (3) is curved in the width direction together with the plate (5) after each brazing process.