Novel efficient heat exchanger assembly

Abstract

The utility model discloses a novel efficient heat exchanger assembly which comprises at least two heat exchange plate sets, each heat exchange plate set comprises an upper heat exchange plate and a lower heat exchange plate, namely the upper heat exchange plate and the lower heat exchange plate, the peripheries of the upper heat exchange plate and the lower heat exchange plate are welded to form a circle of flange structure and a middle plate face, and the interior of each heat exchange plate set is of a cavity structure. Through holes are evenly distributed in the corresponding positions of the plate faces of the upper heat exchange plate and the lower heat exchange plate and serve as inlets and outlets of refrigerants, the lower heat exchange plate located at the lowermost position is not provided with through holes, natural gaps exist between the heat exchange plate sets, and the through holes of the heat exchange plate sets are communicated with one another but isolated from the natural gaps between the heat exchange plate sets. According to the heat exchanger, the flowing uniformity of refrigerants and cooling water in the heat exchanger can be optimized, so that the heat exchange performance is improved, and meanwhile, the flowing resistance of the refrigerants and the cooling water is reduced by optimizing the flowing uniformity of the refrigerants and the cooling water.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle cooling, in particular to a novel and efficient heat exchanger assembly. Background Technique

[0002] At present, with the rapid development of the electric vehicle industry, water-refrigerant heat exchangers are increasingly used. However, the existing heat exchangers basically have a pair of refrigerant inlets and outlets and a pair of cooling water inlets and outlets. Since the refrigerant inlets and outlets and the cooling water inlets and outlets are respectively arranged on both sides, the distribution of the entire refrigerant and cooling water on the surface of the stacked plates 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 in a unit volume, it is necessary to improve the flow uniformity of the refrigerant and cooling water in the overall stacked plates. The purpose of the present utility model is to solve the reduction of the heat exchange performance of the heat exchanger caused by the insufficient heat exchange of the flow rates of the refrigerant and cooling water. Content of the Utility Model

[0003] Based on this, in order to solve the problems mentioned in the above background technique, it is necessary to provide a novel and efficient heat exchanger assembly.

[0004] The purpose of the present utility model can be achieved by the following technical solutions: A novel and efficient heat exchanger assembly includes 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 peripheries of the upper and lower heat exchange plates are welded to form a flange structure and the middle plate surface. The inside of the heat exchange plate group is a cavity structure. Through holes are evenly distributed at corresponding positions on the plate surfaces of the upper and lower heat exchange plates as the refrigerant inlets and outlets. The lower heat exchange plate at the bottom does not have through holes. There is a natural gap between the heat exchange plate groups. The through holes of the heat exchange plate groups are mutually communicated, but are isolated from the natural gap between the heat exchange plate groups.

[0005] As a preferred technical solution of the present utility model, further, for the aforementioned novel and efficient heat exchanger assembly, the natural gap between the flange structures of adjacent two groups of heat exchange plate groups serves as the cooling water inlets and outlets.

[0006] For the aforementioned novel and efficient heat exchanger assembly, first stack multiple groups of heat exchange plate groups, and then directly make through holes by punching process.

[0007] The present utility model also designs an application of a new type of high-efficiency heat exchanger assembly. The through holes are distributed on both sides of the plate surface and there are 3 of them respectively. Then, the refrigerant no longer needs to enter the interior of the heat exchanger assembly through centralized inlets and outlets. Moreover, the cooling water enters the interior of the heat exchanger through natural gaps and more directly enters each flow layer of the heat exchanger assembly. When the refrigerant enters the heat exchanger through the through holes, it can flow in the cavities of each layer of heat exchange plate groups. And the cooling water is controlled by a water pump to flow in the opposite direction to the refrigerant in each layer, that is, the refrigerant and the cooling water are as much as possible in a completely countercurrent flow;

[0008] The distributions of the refrigerant and cooling water inlets and outlets inside the heat exchanger assembly are more uniform, so that the flows of the refrigerant and the cooling water become more uniform, greatly improving 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 through hole positions, it is hardly affected by resistance. Therefore, the influence of the internal structure, temperature field and flow field of the heat exchanger on the heat exchange performance is effectively reduced.

[0009] Compared with the prior art, the beneficial effects of the present utility model are:

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

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

[0012] 3. As shown in Figure 5 and Figure 6 , by establishing a simulation model and respectively simulating the flow resistance on the A side and the B side and the flow resistance on the A' side and the B' side, the present utility model 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 prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of the new type of high-efficiency heat exchanger assembly designed by the present utility model;

[0015] Figure 2 It is a top view of the new type of high-efficiency heat exchanger assembly designed by the present utility model;

[0016] Figure 3Side cross-sectional view of the novel high-efficiency heat exchanger assembly designed for the present utility model;

[0017] Figure 4 Comparison diagram of the coolant flow directions of the prior art and the high-efficiency heat exchanger assembly designed for the present utility model;

[0018] Figure 5 Simulation comparison diagram of the prior art and the present utility model;

[0019] Figure 6 Simulation comparison result of the prior art and the present utility model;

[0020] Wherein, 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. Specific implementation manner

[0021] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the specific implementation manner of the present utility model in detail with reference to the accompanying drawings; many specific details are set forth in the following description to fully understand the present utility model; however, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model, so the present utility model is not limited by the specific embodiments disclosed below.

[0022] As Figures 1 - 3 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 stacked 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 the upper heat exchange plate 1 and the lower heat exchange plate 2. The peripheries of the upper and lower heat exchange plates are welded to form a circular flange structure 3 and the intermediate plate surface 4. The inside of the heat exchange plate group is a cavity structure 5. Through holes 6 are evenly distributed at corresponding positions on the plate surfaces 4 of the upper and lower heat exchange plates and are used as the inlets and outlets of the refrigerant. In this embodiment, the through holes 6 are distributed on both sides of the plate surface 4 and 3 are provided respectively;

[0023] In this embodiment, there is a natural gap 7 between the 4 groups of heat exchange plate groups. The through holes 6 of the 4 groups of heat exchange plate groups are mutually communicated but are isolated from the natural gap 7 between the heat exchange plate groups. The heat exchange plate at the bottommost does not have through holes 6 provided, so that the refrigerant forms a loop inside after entering the heat exchange plate group. In the actual production and manufacturing process, multiple groups of heat exchange plate groups can be stacked first, and then the through holes 6 can be directly made by punching process;

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

[0025] The working principle of this embodiment will be further described below. Since the through holes 6 are distributed on both sides of the board surface 4 and there are 3 of them respectively, the refrigerant no longer needs to enter the interior of the heat exchanger assembly through a centralized inlet and outlet. Moreover, 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 heat exchange plate groups. And the cooling water is controlled by a water pump to flow in the opposite direction to the refrigerant in each layer, that is, the refrigerant and the cooling water are as much as possible in a completely countercurrent flow.

[0026] As Figure 4 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 the cooling water becomes more uniform, greatly improving 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 holes 6, it is hardly affected by resistance. The cooling water enters and exits each layer through the natural gap 7, effectively reducing the flow resistance of the cooling water inside the heat exchanger, and thus 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 represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A new type of high-efficiency heat exchanger assembly, characterized in that: The invention 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.

2. The novel high-efficiency heat exchanger assembly according to claim 1 is characterized in that: 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.

3. The novel high-efficiency heat exchanger assembly according to claim 1 is characterized in that: First, multiple groups of heat exchange plate groups are stacked, and then through holes (6) are directly made by a punching process.

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