JPS603478A - Heat exchanger - Google Patents

Abstract

PURPOSE:To have effectively cooling effect by fins in a heat exchanger for an automobile, by bulging an air plate to the fin side to reduce a space in a tube not connected to the fin. CONSTITUTION:Heat exchanging fluid flows in a tube 1, and fins 5 promote the heat exchange of the heat exchanging fluid. A space 11 in a tank is formed of a core plate 2 and a tank member 3. The central portion of the core plate 2 bulges to the fin 5 side. Thus, a space C not covered with the fin 5 at the tube 1 end can be reduced so that the cooling effect can be efficiently had by the fins.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat exchanger, and is useful, for example, as a heater core for an automobile heat exchanger or an automatic table airing device.

Previously, this kind of glue, the father exchanger, was removed from the 1121st.)
, core play 1 on tube 1, l + ii, l mountain i.
2 is transferred to 1, and around this core play 1 and 2 there is a holding 7
111°j2a is formed, and an O-ring 4 is inserted into this holding groove 2a.
The tank member 3 is fitted through. There is a soldering (=J joint) between the Chufu and the core play 1-2, and the joint is sealed. However, if this brazing or C is not sufficiently sealed, the Chikov An adhesive made of epoxy resin ilN is applied to the joint between the core plate 1.2 and the core plate 1.2.

Therefore, in the conventional heat exchanger, the depth B (10
In addition to the amount of tapping), a space A (approximately 2 to 3 mm) is required for pouring the adhesive during the initialization process, and a fairly large space C is required between the core plate 2 and the fins 5.
was needed. Therefore, there are parts of the tube 1 where the fins 5 are not joined to the four parts. (In this kind of glue 15 exchanger, a material with a lower electrode potential than the tube 1 is used as the material for the fins 5, and the twin 5
Due to the sacrifice 1111 food 3XIJ effect,
It is undesirable for the space C to become large in terms of corrosion protection of the chicove 1.

The present invention has been devised in view of the above points), -y-
The object of the present invention is to prevent large portions from forming at the end portions of the fins that do not contact the fins.

Therefore, in the present invention, the core play 1 is formed to bulge toward the fin side, thereby reducing the duf void rlJI that does not bond with the fin.

Next, one embodiment of the present invention will be explained based on the drawings. Fig. 2 shows an example in which the present invention is applied to an automatic military radiator.
Duplex 1 is made of aluminum-manganese alloy (A-3+1 (13)) as a core material, its inner surface is clad with aluminum-curved lead alloy-magnesium (Δ-magnesium) as an anticorrosive agent, and its outer surface is clad with an aluminum-silicon alloy. (A-4 to 4) is clad.The fin 5 is made of an aluminum-tin alloy with an electrode potential less noble than that of the core material of the core plate 1 and 2.The core plays 1 and 2 are made of an aluminum-magnesium copper alloy ( 8-6
951), its inner surface is clad with anti-corrosion material, and its outer surface is clad with brazing filler metal.

6 reinforces the fin 5 by means of an aluminum alloy side play 1 disposed on the long side of the fin 5. The upper tank 3 and the lower tank 7 are each made of nine-inch resin reinforced with glass fibers, and together with the core plate 2, form a tank space 11 and a lower tank space. The upper tank has an inlet vibrator 8 for introducing engine cooling water and an injection valve +-, + for additionally injecting engine cooling water.
1] is integrally molded. In addition, the lower tank 7 has an output 1 for guiding engine cooling water to the engine side.
0 or integrally molded.

FIG. 3 shows a cross section of the core plays 1 and 2. As is clear from the figure, the central part of the core plays 1-'2 extends l1tlj toward the fin 5 side. Core play 1. is shaped like fire. 1. Squeeze the aluminum alloy plate material using a press to integrally form the central 11v5 projecting portion 2b. Next, a tube passage hole 2c is made in the central bulging portion 2b, and then the hole 2c is formed by burring. Finally, the core plate 1 and its periphery are bent to form the holding groove 2a.

Then, the shake consisting of ``-'' is formed at θ (noyo・). First, the tube fin 5, the ablate 2, and the side play 1 and 6 are brazed together in a furnace. After that, the seal ring 4 is arranged in the core play 1 and the holding groove 2a, and then the tank part 4A3 is installed in the part 3.
a to 7. J) in the groove 2a! In this state, tighten the claw 2d at the end of the core plate. In the unlikely event that the core plate is not installed, apply an epoxy resin adhesive.

At this time, since the central portions of the core plates 1 and 2ij bulge out toward the fins 5, the adhesive can be easily applied to the joint surface between the tube 1 and the core plate 2. Moreover, at the '44 near B of the tube I, a space C which is not surrounded by the fins 5 is not formed. Therefore, in this example, the sacrificial corrosion effect of the fins 5 J1' is applied to the entire surface of the tube 1, and corrosion protection of the tube can be achieved satisfactorily.

Furthermore, in this example, since the space C that is not trapped by the fins 5 is made smaller, the heat exchange space covered by the fins can be increased. →“F,)゛Well, it's coming out from the center of the core plate 2 or from the fin side?; ;If you look at it from the other side, the core plate (-i'1ilj part is the tank 3
(toward the side). So, second, 4- ==-
If the length of zo■ is constant, it will be displaced outward from lJ1 tank 3, and it will be longer than dupe 1; 11
The fins 5 are now coupled over ifall.

Therefore, as a whole, “This evening, I exchanged 9) J-’I:
It is possible to increase

Incidentally, the space C that is not covered by the fin 5 of the 11th part is completely removed if C is removed (Is it desirable to do so?
4. Corrosion protection of Aban J fin 5 below mm) Satokaichi 1
It is demonstrated in minutes.

In the above example (the central bulging part 2b of the J core plate 2 is formed into a tapered shape, or the central bulging part 2b is formed into a tapered shape as shown in FIG.
may be formed protrudingly. In addition, in the J-i4i example, in order to give the fin 5 a sacrificial RtM eating effect, the fin 5 material 4
The tube 14.41'-1 may be made of a full bend with a higher electrode potential than the tube 14.41'-1, or may be made of the same 4iR metal as required. In that case, the central bulge 21] prevents
11. You can't see it, or the center part is on the fin 5 side. The effect associated with putting out υ, that is, a wide range of chips and - so 1! 'fl((
It is possible to connect the fins to j'1.
The results are similarly demonstrated.

Furthermore, in the above-mentioned example, the exchangers th and iii of the present invention were used as an automobile heat exchanger, but the present invention can also be applied to other uses, such as heater cores for automobile air conditioners.

As explained above, in the t1) exchanger of the present invention, the 2L ablate is bulged out to the fin side, so that it is possible to prevent a large space from being covered by the fins in the tube nitrate. Therefore, it has the excellent effect of being able to exhibit the cooling effect of the fins at the best IJf.

[Brief explanation of the drawing]

Figure 1 shows a cross section showing the main parts of a conventional glue exchanger.
1'71, FIG. 2 is a front view showing one embodiment of the heat exchanger of the present invention, and FIG. 3 is a cross section 121 taken along the line III-III in FIG.
, FIG. 4 does not show the main parts of another embodiment of the heat exchanger of the present invention [
1. It's 4. l...tube, 2...core play 1, 2b...
・Central bulge, 3...tank member, 5...fin,
11...Tank space. Representative Patent Attorney Takashi Okabe

Claims (2)

[Claims] (1) A tube through which a heat exchange fluid flows, a fin that is thermally coupled to the tube and promotes heat exchange of the exchange fluid, and a core plate 1 disposed at the end H1+ of the 1111 tube; A heat exchanger in which a core plate 1 and a tank member forming a tank space together with a core plate 1 are formed on the fin side with a ratio of 11.υ. (2) The heat exchanger according to claim 1, wherein the fins are formed of a metal whose electrode potential is less noble than that of the tube.