JPH02302595A - Heat radiation fin, heat exchanger and manufacture of heat exchanger - Google Patents

Abstract

PURPOSE:To facilitate insertion and to improve assembling operability by providing a tapered face at the end of heat sink fins to be inserted between a pair of refrigerant tubes. CONSTITUTION:A plurality of refrigerant tubes 10 are arranged at an interval in parallel, heat sink fins 30 of flat section are formed in corrugated state, and so arranged as to hold the tubes 10 from above and below. Inlet and outlet header pipes 30, 40 are communicated with the tubes 10, and attached to both ends of the tubes 10. Inlet, outlet pipes 32, 41 are respectively attached to inlet and outlet side header pipes 30, 40. A tapered face 50 having a predetermined angle of inclination is formed at the end of the folded part 21 of the outermost side of the fin 20. With this structure, when the fins 20 are inserted between a pair of adjacent refrigerant tubes 20, since the tapered face 50 is brought into contact with the side edge of the tube 10 at an angle, the fins 20 are so inserted as to be slid.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat exchanger used in an automobile cooling system, and particularly to a heat radiation fin that is easy to assemble.

[Prior Art] Conventionally, as shown in FIG. 5, this type of heat exchanger 1 is
A plurality of flat refrigerant pipes 10 with flat cross sections arranged in parallel, and corrugated radiation fins 20 arranged around them.
and are arranged at both ends of the flat refrigerant pipe 10, and the flat refrigerant pipe 10
An insertion hole 31 was formed therein, and a pair of header vibes 30 were provided at both ends of the flat refrigerant pipe 10.

The heat exchanger 1 is assembled by assembling the core part while alternately stacking the heat dissipation fins 20 and the flat refrigerant tubes 10, and then inserting both ends of the flat refrigerant tubes 10 into the insertion holes 31 of the header vibe 30. Each member was fixed with a fixing means such as a mount.

However, this assembly method does not allow the flat refrigerant pipe 10
It was difficult to insert the header into the header vibrator 30, and the workability was poor.

Further, as shown in FIG. 3, after the flat refrigerant pipe 10 and the header vibe 30 are assembled, a groove is formed between the flat refrigerant pipes 10 by folding back the outer part into a curved shape, as shown in FIG. There is a method of manufacturing the heat exchanger 1 by inserting corrugated heat radiation fins 20 and fixing them.

[Problems to be Solved by the Invention] However, in the above-mentioned technique in which a corrugated heat radiation fin is inserted after the flat refrigerant pipe and the header vibe are first assembled, the curved folded portion of the radiation fin is attached to the flat refrigerant pipe. Because it gets caught, it cannot be easily inserted between the header vibs, and on the contrary, there is a problem in that the workability of assembly is poor.

SUMMARY OF THE INVENTION In view of the above drawbacks, it is a technical object of the present invention to provide a heat exchanger that is easy to assemble and can easily insert heat radiation fins between flat refrigerant tubes.

[Means for Solving the Problems] According to the present invention, there is provided a heat dissipation fin that is press-fitted between a pair of refrigerant pipes arranged at a distance from each other, and that is easily press-fitted between the pair of flat refrigerant pipes. Thus, a heat dissipation fin characterized by having a tapered surface at its end is obtained.

According to the present invention, there is obtained a heat exchanger characterized in that the radiation fins described in the first aspect are press-fitted between a pair of refrigerant pipes arranged at a distance from each other.

According to the present invention, a pair of refrigerant pipes are arranged with a distance apart from each other, a pair of header pipes are respectively arranged at both ends of the pair of refrigerant pipes, and then the heat dissipation fin according to the first claim is placed on the outer side of the header pipe. There is obtained a method for manufacturing a heat exchanger, characterized in that the heat exchanger is formed by press-inserting the heat exchanger between the pair of flat refrigerant tubes along a tapered portion provided in the section.

[Function] Since a tapered surface is provided at the end of the corrugated folded part of the radiation fin inserted between a pair of refrigerant pipes, the tapered surface contacts the edge of the refrigerant pipe at an angle. The heat dissipation fins are smoothly guided and press-fitted along the flat refrigerant pipes, and the heat dissipation fins are inserted into the flat refrigerant pipes so that they can be easily inserted between the flat refrigerant pipes without the ends of the heat dissipation fins getting caught in the flat refrigerant pipes. inserted into.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. still,
Components similar to those of the conventional technology will be described with the same reference numerals.

1 and 2 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a heat exchanger, and FIG. 2 is a perspective view of a main part of a radiation fin.

As shown in FIG. 1, the heat exchanger of this embodiment, for example, the condenser 1, includes a plurality of refrigerant pipes 10 arranged in parallel at intervals and having a flat cross section, and the periphery of the refrigerant pipes 10, i.e. Refrigerant pipe 1
Corrugate-shaped heat dissipation fins 20 disposed to sandwich 0 above and below communicate with the refrigerant pipe 10, and an inlet header vibe 30 and an outlet header vibe 40 are attached to both ends of the refrigerant pipe 10, and each header vibe 30. It is equipped with an inlet vibe 32 and an outlet vibe 41 attached to 40.

As shown in FIG. 2, the radiation fins 20 are formed by being folded back in a corrugated manner. This heat radiation fin 2
A tapered surface 50 having an inclination at a predetermined angle is formed at the end of the outermost folded portion 21 of 0.

Therefore, the radiation fins 2 are placed between a pair of adjacent refrigerant pipes 10.
0, the tapered surface 50 comes into contact with the side edge of the refrigerant pipe 10 at an angle, so the heat radiation fins 20 are inserted in a sliding manner, and the assembly requires a heat exchanger with excellent workability. could be manufactured.

[Effects of the Invention] As described above, the present invention provides a tapered surface at the end of the heat dissipation fin, so when the heat dissipation fin is inserted between the flat refrigerant pipes after being assembled to the header vibe, the end of the heat dissipation fin is The part can be easily inserted without getting caught on the side edge of the flat refrigerant pipe, improving work efficiency during assembly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
FIG. 1 is a perspective view of a main part of a heat dissipation fin, FIG. 3 is a perspective view of a conventional heat exchanger, FIG. 4 is a perspective view of a main part of a conventional heat dissipation fin, and FIG. FIG. 2 is an exploded perspective view showing how a conventional heat exchanger is assembled. 1... Heat exchanger (condenser), 10... Flat refrigerant pipe. 20... Radiation fin, 30... Inlet side header pipe, 31... Insertion hole, 32... Inlet vibe, 40...
...Exit side header vibe, 41...Exit vibe, 5
0...Tapered surface. M2 figure 'RrJ4 figure Figure 5

Claims (1)

[Scope of Claims] 1) A heat dissipation fin that is press-fitted between a pair of refrigerant pipes arranged at a distance from each other, the tapered surface of which is inserted at the end so that it can be easily press-fitted between the pair of flat refrigerant pipes. A heat dissipation fin characterized by being provided in the section. 2) A heat exchanger characterized in that the radiation fin according to claim 1 is press-fitted between a pair of refrigerant pipes arranged at a distance from each other. 3) A pair of refrigerant pipes are arranged at a distance from each other, a pair of header pipes are respectively provided at both ends of the pair of refrigerant pipes, and then the radiation fins according to the first claim are arranged along the tapered surface. . A method for manufacturing a heat exchanger, characterized in that the heat exchanger is formed by press-fitting between the pair of flat refrigerant tubes.