JPH10281693A - Duplx type integral heat-exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress heat transfer of one heat exchanger to other heat exchangers through common fins by providing thin parts for interrupting the heat transfer between the heat exchangers on the way widthwise of the fins in a duplex-type parallel heat exchanger in which a plurality of heat exchangers are integrally formed through the common fins. SOLUTION: A duplex-type integral heat exchanger comprises a fist heat exchanger 2 and a second exchanger 7 provided in parallel in the direction of ventilation. Corrugated fins 12 are provided between the tube elements 4 of the first heat exchanger 2 and between the tube elements 9 of the second heat exchanger 7. The fins 12 have thickness of, for example, about 0.06 to 0.16 mm. Thin parts 16 are formed on the way widthwise of the fins 12, that is to say, between the tube elements 4 and the tube elements 9. Thus, the heat transfer between the first heat exchanger and the second heat exchanger through the fins can be suppressed by the thin parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double integrated heat exchanger in which two or more heat exchangers having different applications share a fin and are integrally formed, and more particularly to a fin shape.

[0002]

2. Description of the Related Art Conventionally, for example, a radiator for cooling an engine and a condenser constituting a refrigeration cycle are manufactured separately, and the condenser is located close to the front side in the traveling direction of the radiator in an engine room. Was installed.

[0003] However, in the arrangement of the radiator and the condenser, since the two are disposed separately although they are close to each other, the space in the engine room is narrowed by the interval, and the radiator and the condenser are also installed. There was a problem that each operation was complicated.

For this reason, for example, Japanese Patent Application Laid-Open
As disclosed in Japanese Patent Publication No. 0, a double integrated heat exchanger has been developed in which heat exchangers of different types, such as a condenser and a radiator, are integrally configured to share fins.
According to this double integrated heat exchanger, the space between the heat exchangers can be saved by integrating both heat exchangers, and both heat exchangers can be installed at once by one installation work. Since installation can be performed, installation work is also simplified.

[0005]

However, in the double integrated heat exchanger sharing the fins as disclosed in the above publication, the heat exchange medium flowing through each heat exchanger is different due to the different uses of each heat exchanger. Has a different temperature, so that the heat of the heat exchange medium flowing through one heat exchanger is transferred to another heat exchanger having a lower temperature than the one heat exchanger There is a problem that the temperature of the heat exchanger rises and one heat exchanger causes the heat exchange capacity of the other heat exchanger to decrease.

Accordingly, the present invention provides a dual-integrated heat exchanger in which two or more heat exchangers having different applications share a fin and are integrally formed, wherein the heat of one heat exchanger uses the shared fin. It is an object of the present invention to provide a dual-integrated heat exchanger in which transmission from one heat exchanger to another heat exchanger is suppressed.

[0007]

SUMMARY OF THE INVENTION A composite integrated heat exchanger according to the present invention is a composite integrated heat exchanger in which two or more heat exchangers having different applications are integrally formed by sharing fins. In the above, a thin portion for preventing heat transfer between the heat exchangers is provided in the widthwise direction of the fin (claim 1). Further, it is desirable that the width of the thin portion in the heat exchanger ventilation direction is at most 5 mm (claim 2). Further, the shape of the fin may be a corrugated shape (claim 3) or a flat plate shape (claim 4).

Thus, the heat transfer from one heat exchanger to another heat exchanger via the fins can be suppressed by the thin portion, so that the heat exchangers for different purposes share the fins. In addition, it is possible to suppress a decrease in heat exchange capacity of another heat exchanger due to heat of one heat exchanger.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an example of a multiple integrated heat exchanger 1 according to the present invention. The double integrated heat exchanger 1 is configured such that the first heat exchanger 2 and the second heat exchanger 7 are arranged side by side in the ventilation direction.

The first heat exchanger 2 is used, for example, as a condenser used in a refrigeration cycle of an air conditioner for a vehicle. The first heat exchanger 2 has two header tanks 3, 3 standing in parallel. A plurality of flat tube elements 4 having a heat exchange medium passage 5 extending linearly therein are stacked in parallel between the header tanks 3, 3, whereby the header tanks 3, 3 communicate with each other. . The header tank 3 is provided with inflow / outflow pipes 6, 6 through which the heat exchange medium flows in / out.

The second heat exchanger 7 is used, for example, as a radiator for cooling the engine.
That is, the header tanks 8 and 8 are erected in parallel, and a flat tube element 9 having a linear heat exchange medium passage 10 therein for communicating the header tanks 8 and 8 is provided with a header. A plurality of tanks are stacked in parallel between the tanks 8, and the header tank 8 is provided with inflow / outflow pipes 11, 11 through which a heat exchange medium flows in / out.

A corrugated fin 12 extends between the tube elements 4 and 4 of the first heat exchanger 2 and between the tube elements 9 and 9 of the second heat exchanger 7.

Further, reinforcing plates 1 are provided on both sides of the tube elements 4 and 9 of the first heat exchanger 2 and the second heat exchanger 7 in the stacking direction.
3, 13 are arranged. Among them, at least two brackets 14 are provided on the reinforcing plate 13 on the upper surface side,
Each bracket 14 has a perforation 15 for fixing the multiple integrated heat exchanger 1.

After assembling the header tanks 3 and 8, the tube elements 4 and 9 and the fins 12 having the above-described configuration as appropriate, the assembly is brazed in a furnace to obtain the double type shown in FIG. An integrated heat exchanger is formed, and the first heat exchanger 2 and the second heat exchanger 7 are simultaneously fixed to a vehicle body or the like by screwing the bracket 14.

The fin 12 has a thickness of 0,
As shown in FIGS. 2 and 3, a thin portion 16 is formed in the middle of the fin 12 in the width direction, that is, between the tube element 4 and the tube element 9. This thin portion 16 is formed as shown in FIG.
As shown in the figure, U-shaped concave portions 16a, 1
6b, the width W of the heat exchanger in the ventilation direction is 5 mm or less, and the thickness T is about one third to one fourth of the plate thickness. They are formed in the same direction. The thin portion 16 may be formed in advance when the fin 12 is in the state of the material before the corrugation, or may be formed simultaneously when the fin 12 is corrugated. That is, the thin portion 16 can be formed very easily.

However, the first heat exchanger 2 and the second heat exchanger 7 transfer heat from the higher heat exchanger to the lower heat exchanger via the fins 12, but the width of the fins is smaller. The heat transmission can be suppressed by the thin portion 16 in the middle of the direction.

The shape of the thin portion 16 is not limited to the shape shown in FIG. 4, and the width and the width of the heat exchanger in the ventilation direction are 5 mm and the above-mentioned effect of preventing the heat transfer is prevented. Any depression shape may be used as long as it can be obtained. That is, as shown in FIG. 5, a plurality of U-shaped concave portions 16a, 16b, 16c, 1
6d may be formed on both side surfaces of the fin, or a recess 16a may be formed only on one side surface of the fin 12, as shown in FIG. Furthermore, as shown in FIG. 7, although not directly related to the configuration of the thin portion 16,
By having the surface 17 clad with brazing material on both the non-recessed portion and the recessed portion on both side surfaces of the fin 2,
The fins 12 and the tube elements 4 and 9 may be brazed more efficiently. Then, as shown in FIG. 8, V-shaped acute concave portions 16 e and 16 f may be formed on both side surfaces of the fin 12.

Further, it has been described that the heat exchanger constituting the double integrated heat exchanger 1 is composed of the first heat exchanger 2 and the second heat exchanger 7, but the fins 12 are shared. The number of heat exchangers arranged in parallel is not limited. In this case, the number of the thin portions 16 formed on the fins 12 is naturally the number obtained by subtracting 1 from the number of heat exchangers.

Further, the structure of the double integrated heat exchanger 1 has been described as having two independent tube elements 4 and 9 in each of the heat exchangers 2 and 7, as shown in FIG. However, the present invention is not limited to this.

That is, as shown in FIG. 9, the configuration of the tube element 18 is such that it has tubular portions 19 and 20 and bulged header tanks 21 and 22 communicating with both sides thereof in a manner independent of each other. In this way, the tube elements 18 are stacked in a plurality of stages with the fins 12 interposed therebetween, and the tube elements 1
Inflow and outflow pipes 23, 23 through which the heat exchange medium flows in and out of the header tank 21 of FIG.
In addition, the inflow and outflow pipes 24 through which the heat exchange medium flows in and out,
With the provision of the heat exchanger 24, the double integrated heat exchanger 1 including the first heat exchanger 2 and the second heat exchanger 7 integrally may be configured.

The fins 12 interposed between the tube elements 18 are connected to the fins 1 as shown in FIG.
2, a thin portion 16 is formed in the width direction, that is, at the boundary between the tubular portions 19 and 20, and the thin portion 16 is formed.
Is 5 mm on one side with respect to the longitudinal direction of the fins 12
It has the following depression 16a. However, the shape of the thin portion 16 is not limited to this, and is described in FIGS.
The recessed shape as shown in FIGS. 7, 8, and 9 may be used.

However, the first heat exchanger 2 and the second heat exchanger 7 transfer heat from the higher heat exchanger to the lower heat exchanger via the fins 12, but the width of the fins is smaller. The heat transmission can be suppressed by the thin portion 16 in the middle of the direction.

Furthermore, although the shape of the fins 12 used in the multiple integrated heat exchanger 1 has been described as a corrugated shape, it is not necessarily limited to this.

That is, in FIG. 11, the header tanks 23, 24 and the tubes 25, 26 serving as U-shaped heat exchange medium passages are separately formed, and the insertion holes 29, 30 to 24, 2 tubes
The tubes 25 and 26 communicate with the tanks 23 and 24 by inserting the one open ends 31 and 32 of the nozzle 5, and the inflow and outflow portions 33 and 34 are formed in the tanks 23 and 24, so that the first heat exchange is performed. The combined heat exchanger 1 provided with the heat exchanger 2 and the second heat exchanger 7 is shown, but between the tubes 25 of the first heat exchanger 2 and the tubes 26 of the second heat exchanger 7. , 26 may be formed in a flat plate shape.

As shown in FIG. 12, the fins 12 interposed between the tubes 25, 25 and the tubes 26, 26 are thin in the width direction of the fins 12, that is, between the tubes 25 and 26. The thin portion 16 has a concave portion 16 having a width of 5 mm or less on both sides of the fin 12 in the heat exchanger ventilation direction.
a and 16b. However, thin part 1
6, the shape is not limited to this, and the shape of FIG.
8 and 9 may be used.

However, the first heat exchanger 2 and the second heat exchanger 7 transfer heat from the higher heat exchanger to the lower heat exchanger via the fins 12, but the width of the fins. The heat transmission can be suppressed by the thin portion 16 in the middle of the direction.

[0028]

As described above, according to the present invention, the heat applied to the portion belonging to one heat exchanger is reduced by the thin portion provided on the fin shared by the heat exchangers for different purposes. Since it is possible to suppress transmission to a part belonging to the exchanger, it is possible to prevent the heat exchange capacity of another heat exchanger from being reduced by the heat of one heat exchanger even when the fins are shared. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a double integrated heat exchanger in which two heat exchangers are arranged in parallel.

FIG. 2 is a cross-sectional view showing the configuration of the compound integrated heat exchanger according to the first embodiment.

FIG. 3 is a perspective view showing a shape of a fin used in the compound integrated heat exchanger of the above.

FIG. 4 is a diagram illustrating a configuration of a thin portion formed by forming a U-shaped concave portion on both side surfaces in the middle of the width direction of the fin.

FIG. 5 is a view showing a configuration of a thin portion formed by forming a plurality of U-shaped concave portions on both side surfaces in the middle of the width direction of the fin.

FIG. 6 is a diagram showing a configuration of a thin portion formed by forming a U-shaped concave portion on one side surface in the middle of the fin in the width direction.

FIG. 7 is a diagram showing a state in which a brazing material is clad on both side surfaces of the fin.

FIG. 8 is a diagram illustrating a configuration of a thin portion formed by forming a v-shaped concave portion on both side surfaces in the middle of the fin in the width direction.

FIG. 9 is a perspective view showing a composite integrated heat exchanger having a configuration different from that of the composite integrated heat exchanger shown in FIG. 1;

FIG. 10 is a diagram showing a configuration of a thin portion of a fin used in the compound integrated heat exchanger of the above.

FIG. 11 is a diagram showing a multiple integrated heat exchanger using flat fins.

FIG. 12 is a diagram showing a configuration of a thin portion of a fin used in the compound integrated heat exchanger of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Double integrated heat exchanger 2 1st heat exchanger 7 2nd heat exchanger 12 Fin 16 Thin part

Claims (4)

[Claims] 1. A double integrated heat exchanger in which two or more heat exchangers having different applications share a fin and are integrally formed, wherein heat transfer between the heat exchangers is performed in the width direction of the fin. A double-integrated heat exchanger, wherein a thin-walled portion is provided for blocking. 2. A multiple integrated heat exchanger, wherein the width of the thin portion in the direction of ventilation of the heat exchanger is at most 5 mm. 3. A double-integrated heat exchanger, wherein corrugated fins are used. 4. A double-integrated heat exchanger wherein flat fins are used as fins.