Surface contact type heat exchanger

Abstract

To provide a heat exchanger with a secondary heat exchange part which has a small number of components, achieves good assembly workability and low risk of leakage, and has a simple structure.SOLUTION: A surface contact type heat exchanger includes: a first heat exchange part 4 in which a first heat medium 3 circulates in a heat transfer surface 1 with which a heat exchange object contacts; and a second heat exchange part 6 which is integrally disposed on an installation surface 7 located adjacent to the first heat exchange part 4 and in which a second heat medium 5 circulates. Heat exchange is conducted between the heat media.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a surface contact type heat exchanger having a flat heat transfer surface on its outer surface, and performing heat exchange by bringing the heat transfer surface into contact with a heat exchange object such as a battery. In particular, the present invention relates to a heat exchanger having a secondary heat exchange section.

Background Art

[0002] Conventional surface contact type heat exchangers have separately arranged a secondary heat exchanger such as a chiller, and connected the two heat exchangers with pipes.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, in a conventional surface contact type heat exchanger, the overall structure becomes complicated and the number of its component parts increases. At the same time, pipes are required, and the number of component parts also increases from this point. And there are drawbacks that piping connection work is required, the number of connection parts increases, and the risk of leakage also increases.

[0004] Therefore, an object of the present invention is to provide a surface contact type heat exchanger having a secondary heat exchange section, which has a small number of component parts, good assembly workability, a low leakage risk, and a simple structure.

Means for Solving the Problems

[0005] The present invention according to claim 1 has a heat transfer surface 1 formed on its outer surface, a heat exchange object 2 in contact with the heat transfer surface 1, a first heat medium 3 flowing and circulating inside, and a first heat exchange section 4 that exchanges heat with the heat exchange object 2, One or more second heat exchange sections 6 that are integrally arranged on the installation surface 7 of the outer surface adjacent to the first heat exchange section 4, in which a second heat medium 5 circulates and flows, and the first heat medium 3 and the second heat medium 5 exchange heat through the installation surface 7.

[0006] The present invention according to claim 2 is the surface contact type heat exchanger according to claim 1, wherein the installation surface 7 is a surface contact type heat exchanger in which heat transfer improving means 8 is formed.

[0007] The present invention according to claim 3 is the surface contact type heat exchanger according to claim 2, wherein the heat transfer improving means 8 is unevenness formed on the installation surface 7, which is a surface contact type heat exchanger.

[0008] The present invention according to claim 4 is the surface contact type heat exchanger according to claim 3, wherein the heat transfer improving means 8 is unevenness formed in a herringbone shape, which is a surface contact type heat exchanger.

[0009] The present invention according to claim 5 is the surface contact type heat exchanger according to claim 1, wherein the second heat exchange part 6 of the installation surface 7 has a plurality of stacked plates 9, and the first heat medium 3 and the second heat medium 5 alternately flow through every other one in the stacking direction, which is a surface contact type heat exchanger.

Advantages of the Invention

[0010] The invention according to claim 1 includes a first heat exchange part 4 through which a first heat medium 3 flows inside a heat transfer surface 1 with which a heat exchange object 2 comes into contact, and a second heat exchange part 6 that is integrally arranged on an adjacent installation surface 7 and in which a second heat medium 5 circulates inside, and exchanges heat between the two heat media. Thereby, the second heat exchange part 6 is integrally formed with the surface contact type heat exchanger, eliminating the need for pipes connecting them. Thus, piping components and piping work are unnecessary, and the risk of leakage from the pipe connection part is also eliminated. In addition, since the flow path of the first heat medium 3 inside the second heat exchange part 6 is also unnecessary, the structure of the secondary heat exchanger becomes simple, and the number of its components can be reduced. Note that since the second heat exchange section 6 is integrated with the surface contact type heat exchanger, the contact area between the outer surface of the second heat exchange section 6 and the outside air (for example, the atmosphere) decreases, and unnecessary heat transfer therebetween (for example, in the case where the second heat exchange section 6 is a chiller, heat input from the atmosphere) decreases.

[0011] The invention according to claim 2 further has heat transfer improvement means 8 formed on the installation surface 7. Thereby, sufficient heat exchange can be realized even with a simple configuration.

[0012] The invention according to claim 3 further forms the heat transfer improvement means 8 as unevenness formed on the installation surface 7, so that the heat transfer improvement means can be easily formed by press working or the like.

[0013] The invention according to claim 4 further forms the heat transfer improvement means 8 as unevenness formed in a herringbone shape, so that a high heat transfer improvement effect can be easily obtained.

[0014] The invention according to claim 5 configures the second heat exchange section 6 of the installation surface 7 with a plurality of stacked plates 9, and the first heat medium 3 and the second heat medium 5 alternately flow through every other one in the stacking direction, so that heat exchange between both media can be efficiently performed.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0016] Next, an example of cooling the object 2 to be heat-exchanged will be described with reference to the drawings for embodiments of the present invention.

Example

[0017] FIGS. 1 and 2 show a surface-contact type heat exchanger according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view thereof, FIG. 2(A) is a perspective view showing the assembled state of the heat exchanger, and FIG. 2(B) is a cross-sectional view taken along the line B-B of FIG. 2(A). This surface-contact type heat exchanger includes a first heat exchange part 4 composed of a pair of plates and a second heat exchange part 6 integrally connected by brazing to an installation surface 7 provided at one end of the first heat exchange part 4. This heat exchanger has a lower plate 10 formed in a dish shape and an upper plate 11 connected to a flange part of the lower plate 10. In this example, the lower plate 10 and the upper plate 11 are formed in a rectangular shape. A flange part 10a is provided on the outer periphery of the lower plate 10, and a partition part 10b projects from an end in the longitudinal direction of the lower plate 10. A flow passage part 10c is formed between the partition part 10b and the outer peripheral flange part 10a.

[0018] Heat transfer improvement means 8, which are concavo-convexities formed in a herringbone shape, are provided from one end of the partition part 10b. A large number of dimples 13 project from the other end side of the partition part 10b to the inner surface side of the lower plate 10. Further, cooling water inlets and outlets 14 are formed at both ends in the longitudinal direction of the lower plate 10, and pipes 12 are connected thereto.

[0019] Next, the upper plate 11 forms a heat transfer surface 1 that is formed flat except for the installation surface 7 formed at one end in its longitudinal direction. On the installation surface 7 at the end of the heat transfer surface 1, there is provided a heat transfer improvement means 8 which is uneven formed in a herringbone shape. On the lower plate 10, there is provided a heat transfer improvement means 8 facing the upper plate 11, and the V-shaped directions of the waves of both heat transfer improvement means 8 are opposite. And on the installation surface 7 of the upper plate 11, the second heat exchange part 6 is integrally brazed and joined. On the surface of this second heat exchange part 6, there is formed a heat transfer improvement means 8 which is uneven formed in a herringbone shape, and the V-shaped directions of this heat transfer improvement means 8 and the heat transfer improvement means 8 on the upper plate 11 are opposite to each other. On the upper surface of the second heat exchange part 6, a pair of refrigerant inlets and outlets 15 are formed, and a pipe 12 is connected thereto.

[0020] Such each plate is integrally brazed, and as shown in FIG. 2, it becomes a surface contact type heat exchanger in which the first heat exchange part 4 and the second heat exchange part 6 are integrated. And a heat exchange object 2 is brought into contact with the heat transfer surface 1 formed on the flat surface of the upper plate 11. Also, from one side of a pair of pipes 12 provided on the lower surface side of the lower plate 10, as the first heat medium 3, in this example, engine cooling water flows in, and in FIG. 1, it flows into one end side of the partition part 10b from the cooling water inlet and outlet 14, and then is guided to the plane side of the heat transfer surface 1, and it is discharged to the outside from the other pipe 12 and circulates.

[0021] Also, from one pipe 12 of the second heat exchange part 6, in this example, as the second heat medium 5, refrigerant for air conditioning flows in, and it flows between the heat transfer improvement means 8 which is uneven formed in a herringbone shape on the surface of the heat transfer surface 1 and the heat transfer improvement means 8 on the outer periphery of the second heat exchange part 6, and it is guided to the outside. And heat exchange is performed between the second heat medium 5 and the first heat medium 3. In this example, as the heat exchange object 2, an aggregate of battery cells is used, but instead, an inverter or other electronic components can also be cooled.

Example

[0022] Next, FIGS. 3 and 4 show a second embodiment of the surface contact type heat exchanger of the present invention. In this heat exchanger, the second heat exchange section 6 is of a stacked type, in which plates 9 each formed in a dish shape are stacked, and the first heat medium 3 and the second heat medium 5 flow alternately through every other plate, and heat exchange is performed between each pair of plates 9. In this example, a flange portion 10a is formed on the outer periphery of the lower plate 10 formed in a substantially square shape, and a plurality of partition portions 10b are integrally arranged in a meandering shape inside the flange portion 10a. Then, the first heat medium 3 that has flowed through the flow path of the second heat exchange section 6 is introduced from the cooling water inlet / outlet 14 of the upper plate 11 into both the upper and lower plates 11 and 10, and then it is divided left and right in the width direction of the lower plate 10 and flows in a meandering shape through the flow paths between the internal partition portions 10b and is discharged to the outside.

[0023] Further, cooling water inlets / outlets 14 are formed in the flange portion 10a of the lower plate 10, and a pair of cooling water inlets / outlets 14 are provided at both ends of the meandering flow path. Also, as shown in FIG. 3, a heat transfer surface 1 is formed on the plane of the upper plate 11, and an object to be heat-exchanged 2 is placed and contacted on the heat transfer surface 1 as shown in FIG. 4. In this example, the object to be heat-exchanged 2 is an assembly of battery cells.

[0024] Also, in this example, engine cooling water as the first heat medium 3 flows in from a pipe 12 provided in the center in FIG. 4(B), flows through every other plate of the second heat exchange section 6, then is supplied to the inside of the lower plate 10, flows in a meandering shape inside it, and is discharged from a pair of pipes 12. The second heat medium 5 flowing in from one end of the second heat exchange section 6 flows through every other plate 9 as shown in FIG. 3 and flows out to the other refrigerant inlet / outlet 15, and heat exchange is performed between the second heat medium 5 and the first heat medium 3. In this example, engine cooling water of a vehicle is used as the first heat medium 3, and heat exchange can be performed between it and the refrigerant of an air cooler as the second heat medium 5.

Industrial Applicability

[0025] The present invention can be used as a heat exchanger such as a cooler for a driving battery of an electric vehicle or a hybrid vehicle.

Explanation of Signs

[0026] 1 Heat transfer surface 2 Object to be heat-exchanged 3 First heat medium 4 First heat exchange section 5 Second heat medium 6 Second heat exchange section 7 Installation surface 8 Heat transfer improvement means 9 Plate 10 Lower plate 10a Flange portion 10b Partition portion 10c Flow-through portion

[0027] 11 Upper plate 12 Pipe 13 Dimple 14 Cooling water inlet / outlet 15 Refrigerant inlet / outlet

Claims

1. A heat transfer surface (1) is formed on the outer surface of a heat exchanger, a heat exchange object (2) contacts the heat transfer surface (1), and a first heat medium (3) circulates inside on the side opposite to the heat transfer surface (1), and a first heat exchange part (4) that exchanges heat with the heat exchange object (2); An installation surface (7) is integrally arranged on the same surface as the heat transfer surface (1) of the outer surface adjacent to the heat transfer surface (1), a second heat medium (5) circulates inside, and one or more second heat exchange parts (6) where the first heat medium (3) and the second heat medium (5) exchange heat through the installation surface (7); A surface contact type heat exchanger comprising the above.

2. In the surface contact type heat exchanger according to Claim 1, A surface contact type heat exchanger in which heat transfer improvement means (8) is formed on the installation surface (7).

3. In the surface contact type heat exchanger according to Claim 2, The heat transfer improvement means (8) is unevenness formed on the installation surface (7), a surface contact type heat exchanger.

4. In the surface contact type heat exchanger according to Claim 3, The heat transfer improvement means (8) is unevenness formed in a herringbone shape, a surface contact type heat exchanger.

5. In the surface contact type heat exchanger according to Claim 1, The second heat exchange part (6) of the installation surface (7) has a plurality of stacked plates (9), and the first heat medium (3) and the second heat medium (5) alternately flow through every other plate in the stacking direction, a surface contact type heat exchanger.

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