JPH10281692A - Parallel and integral heat-exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the influence of heat to a minimum value respectively and prevent a performance from being lowered by providing either inlet ports or outlet ports of first and second heat exchangers at a common position in a parallel and integral heat exchanger in which the first and second heat exchangers different in their uses are arranged in parallel in the direction of thickness of a core. SOLUTION: A parallel and integral heat exchanger 1 comprises a first heat exchanger 2 and a second heat exchanger 7 arranged in parallel in the direction of ventilation. The first heat exchanger 2 is used as a condenser employed for the refrigerating cycle of an air conditioner for, for example, a vehicle. The second heat exchanger 7 is used for, for example, a radiator for cooling an engine. Common corrugated fins 12 are arranged between the tube elements 4 of the first heat exchanger 2 and between the tube elements of the second heat exchanger 7. The inlet port 6a of the first heat exchanger 2 is provided at a position common to the inlet port 11a of the second heat exchanger 7. The outlet ports 6b and 11b are also located at a common position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side-by-side integrated heat exchanger in which heat exchangers such as a radiator, a condenser, an intercooler and the like are juxtaposed and integrated.

[0002]

2. Description of the Related Art Conventionally, a radiator for cooling the cooling water of an automobile engine and a condenser for a car air conditioner are separately manufactured. is set up.

[0003] As described above, there is a problem that it is troublesome to separately manufacture and install the two components separately and to install them in the limited space in the engine room, but to perform them separately. Was.

[0004] For this reason, for example, Japanese Patent Laid-Open No. 1-247990
As disclosed in Japanese Patent Application Laid-Open Publication No. H11-260, a double integrated heat exchanger has been developed in which heat exchangers of different uses, such as a condenser and a radiator, are integrally configured with a common fin.
According to this double integrated heat exchanger, the space between the two heat exchangers can be saved by integrating the two heat exchangers, and both the heat exchangers can be installed once by one installation work. Since installation can be performed, installation work is also simplified.

[0005]

However, as typified by the above-mentioned publications, in the side-by-side integrated heat exchanger, since the use of each heat exchanger is different, the heat exchange medium flowing through each heat exchanger is different. Since the heat exchangers have different temperatures, the heat radiation temperature of one heat exchanger affects another heat exchanger, and in the worst case, the other heat exchanger may be reheated. The cause is often that the flow directions of both heat exchange media are reversed. In that case, the worst case appears in the back of a part with a large amount of heat dissipation near the inlet of the front heat exchanger, a part with a small amount of heat dissipation near the outlet of the rear heat exchanger, etc. In particular, the performance of the heat exchanger on the back side is the greatest.

SUMMARY OF THE INVENTION Accordingly, the present invention is to provide a side-by-side integrated heat exchanger that minimizes the mutual influence of heat in a side-by-side integrated heat exchanger and that does not cause performance degradation.

[0007]

In a side-by-side integrated heat exchanger according to the present invention, a first heat exchanger and a second heat exchanger having different applications are arranged in parallel in a core thickness direction. In the side-by-side integrated heat exchanger as described above, at least one of the outflow and inlet ports of the first heat exchanger and the second heat exchanger is located at a common position (claim 1). This allows
By setting one of the inlets and outlets at a common position, the flow directions of both heat exchangers become equal, and the changes in the heat distribution of the portions of both heat exchangers become almost the same, which affects the other heat exchangers. Give less.

Further, in the side-by-side integrated heat exchanger according to the present invention, the first heat exchanger and the second heat exchanger having different uses are arranged in parallel in the thickness direction of the core. In the integrated heat exchanger, a flow direction of a heat exchange medium in the first heat exchanger and the second heat exchanger is common (claim 2). As a result, since the flow directions of both heat exchangers are common, the change of the heat distribution in the portions of both heat exchangers becomes almost the same as in claim 1, and the other heat exchangers are affected. Give less.

[0009]

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

FIGS. 1 to 3 show a first embodiment of a side-by-side integrated heat exchanger 1 according to the present invention. The side-by-side integrated heat exchanger 1 is configured such that the first heat exchanger 2 and the second heat exchanger 7 are juxtaposed 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, and has two tanks 3a and 3b arranged in parallel. A plurality of flat tube elements 4 having a heat exchange medium passage 5 extending linearly therein are provided in parallel between the fins 12 so that the tanks 3a and 3b communicate with each other. . The tanks 3a and 3b are provided with an inlet 6a and an outlet 6b through which the heat exchange medium flows in and out. As shown in FIG. 3A, the flow of the first heat exchanger 2 has three passes as indicated by arrows, and the flow generally flows from the right side to the left side in the figure.

The second heat exchanger 7 is used, for example, as a radiator for cooling the engine, and has the same configuration as the first heat exchanger 2, that is, the tanks 8a and 8b are arranged in parallel.
In order to connect the tanks 8a and 8b to each other, a plurality of flat tube elements 9 having a linear heat exchange medium passage 10 therein are provided in parallel between the tanks 8a and 8b. An inflow port 11a and an outflow port 11b through which the exchange medium flows are provided. The flow of the second heat exchanger 7 is one path that flows from the upper side to the lower side as indicated by an arrow as shown in FIG. 3B.

A common corrugated fin 12 extends between the tube elements 4 and 4 of the first heat exchanger 2 and the tube elements 9 and 9 of the second heat exchanger 7. Further, two brackets 14 are provided at the upper ends of the first heat exchanger 2 and the second heat exchanger 7,
Each bracket 14 is provided with a perforation 15 for fixing to a fixed member.

In the side-by-side integrated heat exchanger 1 having the above structure, after the tanks 3a, 3b and 8a, 8b, the tube elements 4, 9 and the fins 12 are appropriately assembled, the assembled body is brazed in a lamp. By doing so, the side-by-side integrated heat exchanger 1 shown in FIG. 1 is formed, and the first heat exchanger 2 and the second heat exchanger 7 are It is fixed to a vehicle body or the like.

Thus, the inlet 6a of the first heat exchanger 2
And the inlet 11a of the second heat exchanger 7 and the outlets 6b and 11b at the same position. The common position referred to here is the outlets 6a, 11a and 6b,
11b is included not only in exactly the same position but also in the same side and the distance from the end is shifted by, for example, 10 mm or 30 mm. As a result, the temperature of the heat exchange medium becomes higher at the inlets 6a, 11a, and the outlets 6a, 1
On the 1b side, the temperature of the heat exchange medium is lower, so that the heat exchange medium is not affected by heat mutually and a decrease in heat exchange efficiency is prevented. That is, the changes in the heat distribution in the portions of both heat exchangers are substantially the same. Further, since the fins 12 are used in common in the side-by-side integrated heat exchanger 1, a notch for suppressing heat transfer in the middle of the fins 12 and means for reducing the thickness are employed. In the side-by-side integrated heat exchanger 1, not only the example in which the fins are shared but also the fins may be provided separately.

A second embodiment of the side-by-side integrated heat exchanger 1 shown in FIG. 4 is shown. The condenser as the first heat exchanger 2 has four paths through which the heat exchange medium flows as shown by arrows. , The inlet 6a and the outlet 6b are provided on the lower tank 3b side, and the radiator 7, which is the second heat exchanger 7, has a single path in which the heat exchange medium flows as shown by the arrow. The inlet 11a is provided in the upper tank 8a, and the outlet 11b is provided in the lower tank 8b.

Therefore, in the second embodiment,
The outlets 6b and 11b are at a common position. For this reason, similarly to the first embodiment, especially the outflow ports 6b and 11
On the b side, the influence of heat on each other can be reduced.

A third embodiment of the side-by-side integrated heat exchanger 1 shown in FIG. 5 is shown. The condenser, which is the first heat exchanger 2, has two paths through which the heat exchange medium flows as shown by arrows. Entrance 6
a and the outlet 6b are provided with the upper tank 3b set aside, and the radiator, which is the second heat exchanger 7, is a single path in which the heat exchange medium flows as shown by the arrow, and the inlet 11a is An outflow port 11b is provided in the upper tank 18a and in the lower tank 8b.

Therefore, in the third embodiment,
The inlets 6a and 11a are at a common position. For this, similarly to the first embodiment, especially the inflow ports 6a, 11
a, the mutual influence of heat can be reduced.

FIG. 6 shows a fourth embodiment of the side-by-side integrated heat exchanger 1 in which the condenser as the first heat exchanger 2 has four paths through which the heat exchange medium flows as indicated by arrows. Entrance 6
a and the inlet 6b are provided on the lower tank 3b side, and the radiator 7, which is the second heat exchanger 7, has two paths through which the heat exchange medium flows as shown by the arrow, and the inlet 11a And an outlet 11b are provided in the upper tank 8a.

Therefore, the inlet 6 of the first heat exchanger 2
a, 6b and the outlets 11a, 11b of the second heat exchanger 7 are not in the same direction but opposite to each other, but in both heat exchangers 2, 7 the flow direction of the heat exchange medium is from right to left in the figure. Since the flow and the flow direction are common, the mutual influence of heat can be reduced. That is, the changes in the heat distribution in the portions of both heat exchangers are substantially the same.

Further, the configuration of the parallel-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. It is not limited to this.

That is, as shown in FIG. 7, the configuration of the tube element 18 is changed in a manner independent of each other.
9, 20 and a bulging tank 21 communicating with both sides thereof;
22 so that the tube elements 18 are stacked in a plurality of stages with the fins 12 interposed therebetween, and the heat exchange medium flows into and out of the tanks 21 of the tube elements 18 on both sides in the stacking direction. Inlet 13a
The first heat exchanger 2 and the second heat exchanger 7 are integrated with each other by providing an inlet 24a and an outlet 24b through which the heat exchange medium flows in and out of the tank 22. It goes without saying that all of the embodiments of the present invention can be applied to a configuration in which the side-by-side integrated heat exchanger 1 provided in the above is configured, and also that the present invention can be applied to other side-by-side integrated heat exchangers. Of course.

[0024]

As described above, according to the present invention, at least one of the outflow port and the outflow port of the side-by-side integrated heat exchanger has a common position, and the flow direction of the heat exchange medium is common. The changes in the heat distribution of the heat exchanger parts are substantially the same, and the mutual influence of heat can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a side-by-side integrated heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an exploded front view of the same, where a is a first heat exchanger and b is a second heat exchanger.

FIG. 4 shows a second embodiment of the present invention, wherein a is the first embodiment.
FIG. 4B is a front view of the second heat exchanger, where FIG.

FIG. 5 shows a third embodiment of the present invention, which is exploded and shown, wherein a is a front view of a first heat exchanger and b is a front view of a second heat exchanger.

FIG. 6 shows a fourth embodiment of the present invention, which is exploded and shown, wherein a is a front view of a first heat exchanger and b is a front view of a second heat exchanger.

FIG. 7 is a perspective view showing another example of a parallel-integrated heat exchanger according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 parallel integrated heat exchanger 2 first heat exchanger 3a, 3b tank 6a inlet 6b outlet 7 second heat exchanger 8a, 8b tank 9 tube element 11a inlet 11b outlet 12 fin 18 tube element 23a flow Inlet 23b Outlet 24a Inlet 24b Outlet

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[Procedure amendment]

[Submission date] January 22, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

However, as typified by the above-mentioned publications, in the side-by-side integrated heat exchanger, since the use of each heat exchanger is different, the heat exchange medium flowing through each heat exchanger is different. Since the heat exchangers have different temperatures, the heat radiation temperature of one heat exchanger affects another heat exchanger, and in the worst case, the other heat exchanger may be reheated. The cause is often that the flow directions of both heat exchange media are reversed. In that case, the worst case appears in an example where a part with a small amount of heat dissipation near the outlet of the rear heat exchanger faces the back of a part with a large amount of heat dissipation near the inlet of the front heat exchanger, especially The performance degradation of the heat exchanger on the back side is the largest.

Claims (5)

[Claims] 1. A side-by-side integrated heat exchanger in which a first heat exchanger and a second heat exchanger having different applications are arranged in parallel in a core thickness direction, wherein the first heat exchanger is provided. And one or more outflow / inlet ports of the second heat exchanger at a common position. 2. A side-by-side integrated heat exchanger in which a first heat exchanger and a second heat exchanger having different uses are arranged in parallel in a core thickness direction, wherein the first heat exchanger is provided. And the second heat exchanger has a common flow direction of the heat exchange medium. 3. The side-by-side integrated heat exchanger according to claim 1, wherein the first heat exchanger and the second heat exchanger share a fin. 4. The side-by-side integrated heat exchanger according to claim 1, wherein the first heat exchanger and the second heat exchanger have separate fins. 5. The side-by-side integrated heat exchanger according to claim 2, wherein both the first heat exchanger and the second heat exchanger have two or more passes of the heat exchange medium.