A high efficiency heat exchanger assembly

Abstract

The present invention discloses a novel high-efficiency heat exchanger assembly, comprising at least two groups of heat exchange plate groups, each group of heat exchange plates comprising two upper and lower heat exchange plates, namely an upper heat exchange plate and a lower heat exchange plate, the upper and lower heat exchange plates are welded around to form a flange structure and a middle plate surface, the interior of the heat exchange plate group is a cavity structure, and through holes are evenly distributed at corresponding positions on the plate surfaces of the upper and lower heat exchange plates as the inlet and outlet of the refrigerant, the lower heat exchange plate located at the bottom does not have through holes, and there is a natural gap between the heat exchange plate groups, the through holes of the heat exchange plate groups are interconnected, but isolated from the natural gaps between the heat exchange plate groups; the present invention can optimize the flow uniformity of the refrigerant and cooling water in the heat exchanger, thereby improving the heat exchange performance, and at the same time, by optimizing the flow uniformity of the refrigerant and the coolant, the flow resistance of the refrigerant and the cooling water is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric vehicle cooling, and in particular to a novel high-efficiency heat exchanger assembly. Background Art

[0002] At present, with the rapid development of the electric vehicle industry, water-refrigerant heat exchangers are being used more and more, but the existing heat exchangers are basically equipped with a pair of refrigerant inlet and outlet and a pair of cooling water inlet and outlet; since the refrigerant inlet and outlet and the cooling water inlet and outlet are respectively arranged on both sides, the distribution of the entire refrigerant and cooling water on the surface of the stack is not uniform; the uneven flow distribution will cause the performance of the overall heat exchanger to be seriously affected; in order to improve the performance of the heat exchanger per unit volume, it is necessary to improve the flow uniformity of the refrigerant and cooling water of the overall stack; the purpose of the present invention is to solve the problem of reduced heat exchange performance of the heat exchanger caused by insufficient flow heat exchange of the refrigerant and cooling water. Summary of the invention

[0003] Based on this, it is necessary to provide a new type of high-efficiency heat exchanger assembly to address the problems mentioned in the above background technology.

[0004] The purpose of the present invention can be achieved through the following technical solutions: a new type of high-efficiency heat exchanger assembly, including at least two groups of heat exchange plate groups, each group of heat exchange plates includes two upper and lower heat exchange plates, namely an upper heat exchange plate and a lower heat exchange plate, the upper and lower heat exchange plates are welded around to form a circle of flange structure and a middle plate surface, the interior of the heat exchange plate group is a cavity structure, and through holes are evenly distributed at corresponding positions on the plate surfaces of the upper and lower heat exchange plates as the inlet and outlet of the refrigerant. The lower heat exchange plate located at the bottom has no through holes, and there are natural gaps between the heat exchange plate groups. The through holes of the heat exchange plate groups are connected to each other, but are isolated from the natural gaps between the heat exchange plate groups.

[0005] As a preferred technical solution of the present invention, further, in the aforementioned novel high-efficiency heat exchanger assembly, the natural gap between the flange structures of two adjacent groups of heat exchange plate groups serves as the inlet and outlet of cooling water.

[0006] The aforementioned novel high-efficiency heat exchanger assembly first stacks a plurality of heat exchange plate groups, and then directly makes through holes through a punching process.

[0007] The present invention also designs an application of a new type of high-efficiency heat exchanger assembly, wherein three through holes are distributed on both sides of the plate surface, respectively, so that the refrigerant no longer needs to enter the interior of the heat exchanger assembly through a centralized inlet and outlet, and the cooling water enters the interior of the heat exchanger through a natural gap and enters each flow layer of the heat exchanger assembly more directly; when the refrigerant enters the interior of the heat exchanger through the through holes, it can flow in the cavities of each layer of the heat exchange plate group;

[0008] The distribution of the refrigerant and cooling water inlets and outlets inside the heat exchanger assembly is more uniform, so that the flow of the refrigerant and cooling water also becomes more uniform, greatly improving the heat exchange capacity of the heat exchanger assembly, thereby effectively reducing the influence of the internal structure, temperature field and flow field of the heat exchanger on the heat exchange performance.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The present invention can optimize the flow uniformity of refrigerant and cooling water in the heat exchanger, thereby improving the heat exchange performance;

[0011] 2. The present invention reduces the flow resistance of the refrigerant and cooling water by optimizing the flow uniformity of the refrigerant and the cooling liquid;

[0012] 3. Through Figure 5 and Figure 6 As shown, a simulation model is established to simulate the flow resistance of the A side and the B side and the flow resistance of the A' side and the B' side respectively. The present invention can effectively reduce the flow resistance of the refrigerant and greatly reduce the flow resistance of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A schematic diagram of the structure of a new type of high-efficiency heat exchanger assembly designed for the present invention;

[0015] Figure 2 A top view of the novel high-efficiency heat exchanger assembly designed for the present invention;

[0016] Figure 3 A side cross-sectional view of a novel high-efficiency heat exchanger assembly designed for the present invention;

[0017] Figure 4 A comparison diagram of the coolant flow direction of the high-efficiency heat exchanger assembly designed in the prior art and the present invention;

[0018] Figure 5 It is a simulation comparison diagram between the prior art and the present invention;

[0019] Figure 6 It is the simulation comparison result of the prior art and the present invention;

[0020] Among them, 1-upper heat exchange plate, 2-lower heat exchange plate, 3-flange structure, 4-plate surface, 5-cavity structure, 6-through hole, 7-natural gap. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings; in the following description, many specific details are elaborated to facilitate a full understanding of the present invention; however, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed below.

[0022] like Figure 1-Figure 3 As shown, the novel high-efficiency heat exchanger assembly provided in this embodiment includes at least 2 groups of heat exchange plate groups. In this embodiment, a stacking structure of 4 groups of heat exchange plate groups is taken as an example. Each group of heat exchange plates includes two upper and lower heat exchange plates, namely an upper heat exchange plate 1 and a lower heat exchange plate 2. The upper and lower heat exchange plates are welded around to form a circle of flange structure 3 and a plate surface 4 in the middle. The interior of the heat exchange plate group is a cavity structure 5. Through holes 6 are evenly distributed at corresponding positions on the plate surface 4 of the upper and lower heat exchange plates as the inlet and outlet of the refrigerant. In this embodiment, the through holes 6 are distributed on both sides of the plate surface 4 and are respectively provided with 3;

[0023] In this embodiment, there are natural gaps 7 between the four groups of heat exchange plate groups, and the through holes 6 of the four groups of heat exchange plate groups are interconnected, but isolated from the natural gaps 7 between the heat exchange plate groups. The heat exchange plate at the bottom is not provided with a through hole 6, so that the refrigerant forms a loop inside the heat exchange plate group after entering the heat exchange plate group. In the actual production process, multiple groups of heat exchange plate groups can be stacked first, and then the through holes 6 can be directly made by a punching process;

[0024] The natural gap 7 between the flange structures 3 of two adjacent groups of heat exchange plate groups serves as the inlet and outlet of cooling water.

[0025] The following is a further explanation of the working principle of this embodiment. Since the through holes 6 are distributed on both sides of the plate surface 4 and are respectively provided with three holes, the refrigerant no longer needs to enter the interior of the heat exchanger assembly through the centralized inlet and outlet, and the cooling water enters the interior of the heat exchanger through the natural gap 7 and enters each flow layer of the heat exchanger assembly more directly; when the refrigerant enters the interior of the heat exchanger through the through holes 6, it can flow in the cavities of each layer of the heat exchange plate group, and the cooling water is controlled by the water pump to flow in the opposite direction to the refrigerant in each layer, that is, the refrigerant and the cooling water are in a completely reverse flow as much as possible;

[0026] like Figure 4As shown, the distribution of the refrigerant and cooling water inlets and outlets inside the heat exchanger assembly is more uniform, so that the flow of the refrigerant and cooling water becomes more uniform, which greatly improves the heat exchange capacity of the heat exchanger assembly. When the cooling water flows between the layers, except for the columnar obstruction formed at the position of the through hole 6, it is almost unaffected by resistance. The cooling water enters and exits each layer through the natural gap 7, which effectively reduces the flow resistance of the cooling water inside the heat exchanger, thereby effectively reducing the pumping power requirement of the system. Therefore, the influence of the internal structure, temperature field and flow field of the heat exchanger on the heat exchange performance is effectively reduced.

[0027] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A high-efficiency heat exchanger assembly, characterized in that: It comprises at least two groups of heat exchange plate groups, each group of heat exchange plates comprises two upper and lower heat exchange plates, namely an upper heat exchange plate (1) and a lower heat exchange plate (2), the upper and lower heat exchange plates are welded around to form a flange structure (3) and a plate surface (4) in the middle, the interior of the heat exchange plate group is a cavity structure (5), and through holes (6) are evenly distributed at corresponding positions on the plate surfaces (4) of the upper and lower heat exchange plates as the inlet and outlet of the refrigerant, the lower heat exchange plate (2) located at the bottom does not have a through hole (6), there is a natural gap (7) between the heat exchange plate groups, the through holes (6) of the heat exchange plate groups are interconnected, but isolated from the natural gap (7) between the heat exchange plate groups; The natural gap (7) between the flange structures (3) of two adjacent groups of heat exchange plate groups serves as an inlet and outlet for cooling water; First, a plurality of heat exchange plate groups are stacked, and then through holes (6) are directly made by a punching process; The through holes (6) are distributed on both sides of the plate surface (4) and are respectively provided with three holes, so that the refrigerant no longer needs to enter the interior of the heat exchanger assembly through a centralized inlet and outlet, and the cooling water enters the interior of the heat exchanger through the natural gap (7) and enters each flow layer of the heat exchanger assembly more directly; when the refrigerant enters the interior of the heat exchanger through the through holes (6), it can flow in the cavities of each layer of the heat exchange plate group; The distribution of the refrigerant and cooling water inlets and outlets inside the heat exchanger assembly is more uniform, so that the flow of the refrigerant and cooling water also becomes more uniform, greatly improving the heat exchange capacity of the heat exchanger assembly, thereby effectively reducing the influence of the internal structure, temperature field and flow field of the heat exchanger on the heat exchange performance.

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