JPH10281688A - Integral heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably reduce a decrease in cooling performance of a condenser due to thermal influence of cooling water of a radiator from prior art in the integral heat exchanger having corrugated fins of a core of the radiator and condenser commonly used by adjacently disposing the radiator and condenser. SOLUTION: In the integral heat exchanger in which a radiator 23 formed with a core 29 between a pair of radiator tanks 31 and 33 and a condenser 21 formed with a core 29 between a pair of condenser tanks 25 and 27 are adjacently disposed and corrugated fins disposed at the cores 29 of the radiator 23 and condenser 21, cooling water discharge part of a cooling water discharge side of the core 29 of the radiator 23 is superposed and disposed on refrigerant discharge port of refrigerant discharge side of the core 29 of the condenser 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated heat exchanger in which a radiator and a condenser are arranged adjacent to each other, and a radiator and a corrugated fin arranged in the core of the condenser are shared.

[0002]

2. Description of the Related Art In recent years, a so-called integrated heat exchanger in which a cooling condenser is connected to the front of a radiator has been developed, and such an integrated heat exchanger is disclosed in, for example, Japanese Patent Application Laid-Open No. 1-247990. And the like are known.

FIGS. 10 to 12 show an integrated heat exchanger of this type. In this integrated heat exchanger, a condenser 1 is arranged on a front surface of a radiator 2. The capacitor 1 is composed of a first condenser tank 3 and a second condenser tank 4 that are opposed to each other at predetermined intervals in the vertical direction.
The radiator 2 is provided between a first radiator tank 6 and a second radiator tank 7 which are arranged facing each other at a predetermined interval in the vertical direction. A portion 5 is formed.

In this integrated heat exchanger, a tube 7 for a condenser and a tube 8 for a radiator are arranged in the core portion 5, and wide corrugated fins 9 straddle these tubes 7, 8. It is brazed and the corrugated fin 9 is shared. Also, the first of the radiators 2
A cooling water inflow pipe 10 is opened in the radiator tank 6, and a cooling water outflow pipe 11 is opened in the second radiator tank 7.

Further, a refrigerant inflow pipe 12 and a refrigerant outflow pipe 13 are opened in the first condenser tank 3 of the condenser 1, and the first condenser tank 3 and the second condenser tank 4 are provided in FIG. As shown in, the dividers 14, 15, 1 partitioning the inside of the tanks 3, 4
6 are arranged. In the above-described integrated heat exchanger, the cooling water of the radiator 2 flows into the first radiator tank 6 from the cooling water inflow pipe 10 as shown in FIG. , Flows into the second radiator tank 7 and flows out from the cooling water outflow pipe 11.

On the other hand, as shown in FIG. 12, the refrigerant in the condenser 1 flows into the first condenser tank 3 from the refrigerant inflow pipe 12 and then flows into the second condenser tank 4 through the tube 7. , Divide 14, 1
By the action of 5 and 16, the inflow into the first condenser tank 3 and the second condenser tank 4 is repeated, cooled while passing through the tube 7, and finally from the refrigerant outflow pipe 13 of the first condenser tank 3 Will be leaked.

In the condenser 1 described above, the refrigerant outflow pipe 13 is provided in the first condenser tank 3, so that only a sufficiently condensed liquid refrigerant can flow out of the refrigerant outflow pipe 13.

[0008]

However, in such a conventional integrated heat exchanger, the radiator 2 and the core portion 5 of the condenser 1 share the corrugated fins 9 and relatively high-temperature cooling water flows therein. Since the cooling water inflow pipe 10 is provided in the first radiator tank 6 and the refrigerant outflow pipe 13 through which the cooled and condensed refrigerant flows out is provided in the first condenser tank 3, the corrugate There is a problem that the heat of the relatively high-temperature cooling water of the radiator 2 is transmitted to the relatively low-temperature refrigerant cooled and condensed by the condenser 1 via the fins 9, and the cooling performance of the condenser 1 is reduced.

The present invention has solved the above-mentioned conventional problems and provides an integrated heat exchanger capable of greatly reducing the deterioration of the cooling performance of the condenser due to the thermal influence of the radiator cooling water as compared with the conventional heat exchanger. The purpose is to:

[0010]

According to a first aspect of the present invention, there is provided an integrated heat exchanger comprising a radiator having a core formed between a pair of radiator tanks and a core formed between a pair of condenser tanks. In the integrated heat exchanger that shares the radiator and the corrugated fins arranged in the core portion of the condenser while adjoining the condenser, the refrigerant outflow portion on the refrigerant outflow side in the core portion of the condenser, The cooling water outflow portion on the cooling water outflow side in the core portion of the radiator is overlapped and arranged.

According to a second aspect of the present invention, there is provided an integrated heat exchanger according to the first aspect, wherein the condenser is configured to turn and flow the refrigerant to the pair of condenser tanks. It is characterized by the following.

(Function) In the integrated heat exchanger of the first aspect,
A cooling water outflow portion, which is a cooling water outflow side in the core portion of the radiator, is superposed on a refrigerant outflow portion, which is a refrigerant outflow side in the core portion of the condenser.

[0013] In the integrated heat exchanger of the second aspect, the condenser is configured to turn and flow the refrigerant to the pair of condenser tanks.

[0014]

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

FIGS. 1 to 3 show a first embodiment of the integrated heat exchanger of the present invention. In this integrated heat exchanger, the condenser 21 is disposed on the front of the radiator 23. The capacitor 21 has a first capacitor tank 25 and a second capacitor
And a condenser tank 27.

The radiator 23 has a first radiator tank 3 opposed to the first radiator tank 3 at predetermined intervals in the vertical direction.
The core portion 29 is formed between the first and second radiator tanks 33. The core part 29 includes a tube 35 for the condenser 21 and a tube 3 for the radiator 23.
7 are arranged.

A wide corrugated fin 39 is brazed across these tubes 35 and 37, and the corrugated fin 39 is shared. In this embodiment, the first condenser tank 25 and the first radiator tank 31,
The second condenser tank 27 and the second radiator tank 33 are made of aluminum and are integrally formed by extrusion molding.

Further, the first condenser tank 25 and the second condenser tank 27 are formed in a cylindrical shape, and the first radiator tank 31 and the second radiator tank 33 are formed in a rectangular cylindrical shape. As shown in FIG. 3, divides 41 and 43 are formed in the first condenser tank 25 at intervals, and in the second condenser tank 27 divides are provided at positions between the divides 41 and 43. 45 are formed.

In this embodiment, the capacitor 2
On both sides of the first condenser tank 25, a refrigerant inflow pipe 47 and a refrigerant outflow pipe 49 are opened. Also, the second radiator tank 3 of the radiator 23
3, a cooling water inflow pipe 51 is opened, and in the first radiator tank 31, a cooling water outflow pipe 53 is opened.

In the above-described integrated heat exchanger, the cooling water of the radiator 23 flows from the cooling water inflow pipe 51 into the second radiator tank 33 as shown in FIG. After that, it flows into the first radiator tank 31 and flows out from the cooling water outflow pipe 53. On the other hand, as shown in FIG. 3, the refrigerant in the condenser 21 is supplied from the refrigerant inflow pipe 47 to the first condenser tank 2.
5, flows into the second condenser tank 27 through the tube 35, and further flows into the divides 41, 4.
3, 45, the first condenser tank 25,
The inflow into the second condenser tank 27 is repeated, cooled while passing through the tube 35, and finally discharged from the refrigerant outflow pipe 49 of the first condenser tank 25.

In the integrated heat exchanger configured as described above, the cooling water inflow pipe 51 into which the relatively high-temperature cooling water flows is opened in the second radiator tank 33, and the cooled and condensed refrigerant flows therethrough. The discharged refrigerant outflow pipe 49 is first
Above the core tank 29, the temperature of the cooling water of the radiator 23 is relatively low, and the cooling performance of the capacitor 21 is reduced due to the thermal effect of the cooling water of the radiator 23. Can be greatly reduced as compared with the related art.

That is, in the above-mentioned integrated heat exchanger,
The cooling water outflow portion 57, which is the cooling water outflow side in the core portion 29 of the radiator 23, is superposed on the refrigerant outflow portion 55, which is the refrigerant outflow side in the core portion 29 of the condenser 21, so that the heat of the cooling water in the radiator 23 is increased. The deterioration of the cooling performance of the condenser 21 due to the influence by the influence can be greatly reduced as compared with the related art.

FIGS. 4 to 6 show a second embodiment of the integrated heat exchanger of the present invention. In this integrated heat exchanger, the condenser 21A is arranged on the front surface of the radiator 23A. The condenser 21A is provided with a first condenser tank 25 which is opposed to the first condenser tank 25 at a predetermined interval in the horizontal direction.
A between the first condenser tank 27A and the second condenser tank 27A.
A is formed.

The radiator 23A is formed by forming a core portion 29A between a first radiator tank 31A and a second radiator tank 33A which are opposed to each other at a predetermined interval in the horizontal direction. In the core part 29A,
Tube 35A for condenser 21A and radiator 23
A tube 37A is disposed.

A wide corrugated fin 39A is brazed across these tubes 35A and 37A, and the corrugated fin 39A is shared. In this embodiment, the first condenser tank 25A and the first radiator tank 31A, and the second condenser tank 27A and the second radiator tank 33A are made of aluminum and are integrally formed by extrusion.

The first condenser tank 25A and the second condenser tank 27A are formed in a cylindrical shape, and the first radiator tank 31A and the second radiator tank 33A are formed in a rectangular cylindrical shape. Second
In the condenser tank 27A of FIG.
Dividers 41A and 45A are formed at intervals, and divide 41A and 45A are formed in first condenser tank 25A.
A divide 43A is formed at a position between A and 45A.

In this embodiment, the capacitor 2
A refrigerant inflow pipe 47A and a refrigerant outflow pipe 49A are opened on both sides of the second condenser tank 27A of 1A. A cooling water inflow pipe 51A is opened in the first radiator tank 31A of the radiator 23A, and a cooling water outflow pipe 53A is opened in the second radiator tank 33A.

In the above-mentioned integrated heat exchanger, as shown in FIG. 5, the cooling water of the radiator 23A flows from the cooling water inflow pipe 51A into the first radiator tank 31A, and is cooled while passing through the tube 37A. After flowing into the second radiator tank 33A, the cooling water outflow pipe 53
Flowed out of A. On the other hand, the refrigerant of the condenser 21A is:
As shown in FIG. 6, after flowing into the second condenser tank 27A from the refrigerant inflow pipe 47A, the tube 35A
Through the first condenser tank 25A, and further by the action of the divides 41A, 43A, 45A.
The inflow into the second condenser tank 27A and the first condenser tank 25A is repeated, cooled while passing through the tube 35A, and finally discharged from the refrigerant outflow pipe 49A of the second condenser tank 27A.

In the integrated heat exchanger configured as described above, the coolant outlet 55A on the coolant outlet side of the core 29A of the condenser 21A is provided with the coolant outlet on the coolant outlet side of the core 29A of the radiator 23A. Outflow part 57
Since A is disposed in an overlapping manner, a decrease in the cooling performance of the condenser 21A due to the thermal effect of the cooling water of the radiator 23A can be significantly reduced as compared with the related art.

FIGS. 7 to 9 show a third embodiment of the integrated heat exchanger of the present invention. In this integrated heat exchanger, the condenser 21B is arranged on the front surface of the radiator 23B. The condenser 21B is provided with a first condenser tank 25 that is opposed to the first condenser tank 25 at a predetermined interval in the horizontal direction.
B and the second condenser tank 27B.
B is formed.

The radiator 23B is formed by forming a core portion 29B between a first radiator tank 31B and a second radiator tank 33B which are opposed to each other at a predetermined interval in the horizontal direction. In the core part 29B,
Tube 35B for condenser 21B and radiator 23
A tube 37B for B is arranged.

A wide corrugated fin 39B is brazed across these tubes 35B and 37B, and the corrugated fin 39B is shared. In this embodiment, the first condenser tank 25B and the first radiator tank 31B, and the second condenser tank 27B and the second radiator tank 33B are made of aluminum and are integrally formed by extrusion.

Further, the first condenser tank 25B and the second condenser tank 27B are formed in a cylindrical shape, and the first radiator tank 31B and the second radiator tank 33B are formed in a rectangular cylindrical shape. Second
In the condenser tank 27B of FIG.
Dividers 41B and 45B are formed at intervals, and divide 41B is provided in first condenser tank 25B.
A divide 43B is formed at a position between B and 45B.

In this embodiment, the capacitor 2
A refrigerant inflow pipe 47B and a refrigerant outflow pipe 49B are opened on both sides of the second condenser tank 27B of 1B. Further, a cooling water inflow pipe 51B is opened at an upper portion of the second radiator tank 33B of the radiator 23B, and a cooling water outflow pipe 53B is opened at a lower portion.

A divide 59 is arranged in the middle of the second radiator tank 33B. In the above-described integrated heat exchanger, the cooling water of the radiator 23B is:
As shown in FIG. 8, after flowing into the second radiator tank 33B from the cooling water inflow pipe 51B and being cooled while passing through the tube 37B, the first radiator tank 31B
Flows into the second radiator tank 33B again by the action of the divide 59, and the cooling water outflow pipe 53
Outflow from B.

On the other hand, as shown in FIG. 9, the refrigerant in the condenser 21B flows into the second condenser tank 27B from the refrigerant inflow pipe 47B, and then flows into the first condenser tank 25B through the tube 35B. , The second condenser tank 27B and the first condenser tank 25B by the action of the divides 41B, 43B and 45B.
Is cooled while passing through the tube 35B, and finally flows out from the refrigerant outflow pipe 49B of the second condenser tank 27B.

In the integrated heat exchanger configured as described above, the coolant outlet 55B on the refrigerant outlet side of the core portion 29B of the condenser 21B is provided with the cooling water outlet on the core portion 29B of the radiator 23B. Outflow part 57
Since B is disposed in an overlapping manner, a decrease in the cooling performance of the condenser 21B due to the thermal effect of the cooling water of the radiator 23B can be significantly reduced as compared with the related art.

In the embodiment described above, the first condenser tanks 25, 25A, 25B and the first radiator tanks 31, 31A, 31B, and the first condenser tanks 27, 27A, 27B and the second radiator tanks Although the example in which the present invention is applied to the integrated heat exchanger in which the heat exchangers 33, 33A, and 33B are integrated has been described, the present invention is not limited to such an embodiment, and the first condenser tank and the first condenser heat exchanger are not limited to this embodiment. The radiator tank and the second condenser tank and the second radiator tank can also be applied to a separate integrated heat exchanger.

[0039]

As described above, in the integrated heat exchanger according to the first aspect, the cooling water flowing out on the cooling water outflow side in the core portion of the radiator is provided at the refrigerant outflowing portion on the cooling medium outflow side in the core portion of the condenser. Since the outflow portions are arranged in an overlapping manner, a decrease in the cooling performance of the condenser due to the thermal influence of the cooling water of the radiator can be significantly reduced as compared with the conventional case. In the integrated heat exchanger of claim 2, since the condenser is configured to turn and flow the refrigerant to the pair of condenser tanks,
The heat exchange efficiency with respect to the refrigerant can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of an integrated heat exchanger of the present invention.

FIG. 2 is a longitudinal sectional view showing the radiator of FIG. 1;

FIG. 3 is a vertical sectional view showing the capacitor of FIG. 1;

FIG. 4 is a cross-sectional view showing a second embodiment of the integrated heat exchanger of the present invention.

FIG. 5 is a longitudinal sectional view showing the radiator of FIG. 4;

FIG. 6 is a vertical sectional view showing the capacitor of FIG. 4;

FIG. 7 is a cross-sectional view showing a third embodiment of the integrated heat exchanger of the present invention.

FIG. 8 is a longitudinal sectional view showing the radiator of FIG. 7;

FIG. 9 is a longitudinal sectional view showing the capacitor of FIG. 7;

FIG. 10 is a cross-sectional view showing a conventional integrated heat exchanger.

11 is a longitudinal sectional view showing the radiator of FIG.

FIG. 12 is a longitudinal sectional view showing the capacitor of FIG. 10;

[Explanation of symbols]

 21, 21A, 21B Condenser 23, 23A, 23B Radiator 25, 25A, 25B First condenser tank 27, 27A, 27B Second condenser tank 29, 29A, 29B Core unit 31, 31A, 31B First radiator tank 33 , 33A, 33B Second radiator tank 39, 39A, 39B Corrugated fin 55, 55A, 55B Refrigerant outlet 57, 57A, 57B Coolant outlet

Claims (2)

[Claims] A pair of radiator tanks (31, 31)
A, 31B, 33, 33A, 33B) between the core portion (2
Radiator (2, 9, 29A, 29B)
3, 23A, 23B) and a pair of condenser tanks (2
5, 25A, 25B, 27, 27A, 27B), capacitors (21, 21A, 21B) each having a core portion (29, 29A, 29B) formed adjacent thereto, and the radiators (23, 23A) , 23B) and the cores (29, 29A) of the capacitors (21, 21A, 21B).
A, 29B), corrugated fins (39, 3)
9A, 39B), the core portion (2) of the capacitors (21, 21A, 21B).
9, 29A, 29B), the radiator (2,
3, 23A, 23B) core portions (29, 29A, 29B).
B), a cooling water outflow portion (57,
57A, 57B) are arranged one on top of another. 2. The integrated heat exchanger according to claim 1, wherein the condensers (21, 21A, 21B) include the pair of condenser tanks (25, 25A, 25B, 27, 2).
7A, 27B), wherein the refrigerant is turned to flow therethrough.