Cooling tube structure of a triple medium heat exchanger

Abstract

A cooling pipe structure of a three-medium heat exchanger, comprising a cooling pipe body, the cross section of the cooling pipe body is a flat rectangular structure, the width direction of the cooling pipe body is provided with symmetrically arranged outer convex arc-shaped parts, the inside of the cooling pipe body is provided with a separation rib along the thickness direction thereof, the separation rib seals and separates the inside cavity of the cooling pipe body into a first medium channel and a second medium channel, and the two end faces of the second medium channel are respectively provided with outwardly extending extension parts. By arranging the separation rib in the inside of the cooling pipe body along the thickness direction, the heat exchange cooling pipe is formed in an integrated extrusion forming mode, and since the structure is integrally formed, the separation rib does not need to be additionally welded and assembled, thereby avoiding the problems of stress concentration, assembly misplacement and virtual welding at the welding seam, and the sealing performance is good.

Description

Technical Field

[0001] This utility model relates to the field of three-medium heat exchanger technology, specifically to a cooling tube structure for a three-medium heat exchanger. Background Technology

[0002] Three-medium heat exchangers are widely used in automotive thermal management, refrigeration systems, and energy conversion to achieve heat exchange between three different media.

[0003] Among them, the heat exchange cooling tube is a key component in the three-medium heat exchanger, serving as the flow channel and heat exchange function for two fluid media. The structural form of the heat exchange cooling tube has a direct impact on the heat exchange efficiency and assembly process.

[0004] Currently, common three-medium heat exchangers adopt a shell-and-tube dual-channel cooling tube structure. A first medium channel is formed by a cooling tube, and a second cooling tube is placed outside it to form a second medium channel. For example, patent CN220931838U, entitled "Heat Exchange Cooling Tube Assembly and Three-medium Heat Exchanger with It", discloses a typical shell-and-tube heat exchange cooling tube assembly. It uses an inner and outer cooling tube structure to form two heat exchange channels, and realizes the splitting and converging of the flow in the collector.

[0005] However, the above-mentioned cooling pipe structure has the following technical drawbacks in actual manufacturing and assembly: the internal partition plate has a complex processing technology, which can easily affect the pipe assembly accuracy and lead to pipe leakage. In order to solve the above problems, it is urgent to provide a heat exchange cooling pipe structure with a simple structure and a simpler manufacturing and assembly process. Summary of the Invention

[0006] This utility model addresses the shortcomings of existing technologies by proposing a cooling tube structure for a three-medium heat exchanger. The specific technical solution is as follows: A cooling tube structure for a three-medium heat exchanger, characterized by comprising: The cooling pipe body has a flat rectangular cross-section. The cooling pipe body has symmetrically arranged outwardly convex arc-shaped structures on both sides in the width direction; The interior of the cooling pipe body is provided with a partition rib along its thickness direction, and the partition rib seals and divides the internal cavity of the cooling pipe body into a first medium channel and a second medium channel. The two ends of the second medium channel are respectively provided with outward extensions.

[0007] To better realize this utility model, it can be further made as follows: The inner wall of the first medium channel is provided with a plurality of first flow holes along the width direction of the cooling pipe body; The inner wall of the second medium channel is provided with a plurality of second flow holes, the diameter of the second flow holes being smaller than the diameter of the first flow holes.

[0008] Furthermore: A folded tube, wherein the cross-section of the folded tube is a flat rectangular structure, and the interior of the folded tube defines a second medium channel; The second medium channel is provided with folded fins along the width direction of the folded tube; The crests of the folded fins are attached to the upper inner wall of the folded tube, and the troughs are attached to the lower inner wall, so as to divide the second medium channel into multiple independent flow equalization channels. A heat exchange tube is sleeved outside the folded tube, and a first medium channel is defined between the heat exchange tube and the folded tube. The length of the folded tube is greater than the length of the heat exchange tube.

[0009] Furthermore, the inner wall of the second medium channel is uniformly provided with multiple ribs along the circumferential direction.

[0010] The beneficial effects of this utility model are as follows: This invention forms a heat exchange cooling pipe by setting partition ribs along the thickness direction inside the cooling pipe body and forming it by integral extrusion molding. Since the structure is formed as a single unit, there is no need to weld and assemble the partition ribs, thereby avoiding the problems of stress concentration, misalignment, and poor welding joints that are easy to occur at the weld, and the sealing performance is good.

[0011] The symmetrical outward-convex arc-shaped structure on both sides of the cooling pipe body helps to enhance the structural strength and internal pressure resistance of the cooling pipe.

[0012] In another embodiment, folded fins are provided inside the folded tube, with the crests and troughs respectively attached to the upper and lower inner walls, dividing the second medium channel into multiple independent flow equalization channels. This can effectively increase the turbulence of the second fluid in the channel, thereby improving the heat exchange efficiency and enhancing the uniformity of fluid distribution across the entire cross-section. Attached Figure Description

[0013] Figure 1 This is a first structural diagram of Example 1; Figure 2 This is a second structural diagram of Example 1; Figure 3 for Figure 1 A magnified view from direction A; Figure 4 This is a first structural diagram of Example 2; Figure 5 This is a second structural diagram of Example 2; Figure 6 for Figure 4 A magnified view from direction B; The accompanying drawings are as follows: Example 1: Cooling pipe body 1, arc-shaped structure 2, partition rib 3, extension 4, first flow hole 5, second flow hole 6; Example 2: Folded tube 1, heat exchange tube 2, first medium channel 3, second medium channel 4, folded fins 5, crests 6, troughs 7, flow equalization channel 8, ribs 9. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] like Figures 1 to 3 The following is the technical solution of Embodiment 1: Implementation 1 provides a first cooling tube structure for a three-medium heat exchanger, including a cooling tube body 1 with a flat rectangular cross-section, which is suitable for increasing the heat exchange area per unit volume.

[0017] Symmetrically arranged on both sides of the cooling pipe body 1 in the width direction are outwardly convex arc-shaped structures 2. The outwardly convex arc-shaped structures 2 are arc-shaped and bulge outward to enhance the cooling pipe's resistance to internal pressure, while increasing the external contact area with air to improve the heat exchange efficiency with the third medium.

[0018] The cooling pipe body 1 has a partition rib 3 arranged inside its thickness direction. The partition rib 3 and the cooling pipe body 1 are integrally extruded from aluminum alloy material. Specifically, the partition rib 3 divides the internal cavity into a first medium channel and a second medium channel distributed vertically.

[0019] The two ends of the second medium channel are respectively provided with outwardly extending extensions 4, and the two ends of the first medium channel and the second medium channel are respectively used to be inserted into the corresponding collector insertion holes.

[0020] The inner wall of the first medium channel is provided with a plurality of first flow holes 5 along the width direction of the cooling pipe. The first flow holes 5 are through holes arranged at equal intervals and are used for fluid distribution and turbulence.

[0021] The second medium channel is provided with a plurality of second flow holes 6 along the cross-sectional direction, the diameter of which is smaller than the diameter of the first flow hole 5.

[0022] In actual operation, the first and second media flow in two independent channels, one above the other, while the third media, such as air, undergoes heat exchange outside the cooling pipe. The convex arc-shaped portion 2 enhances the heat exchange surface area with the third fluid, and the first flow hole 5 and the second flow hole 6 are used to improve the flow uniformity and turbulence characteristics of the fluid.

[0023] like Figures 4 to 6 The following is the technical solution of embodiment 2: Example 2 provides a second cooling tube structure for a three-medium heat exchanger, including a folded tube 1 and a heat exchange tube 2. The heat exchange tube 2 is sleeved outside the folded tube 1, and is integrally formed from aluminum alloy. Both the folded tube 1 and the heat exchange tube 2 have a flat rectangular cross-section, and a second medium channel 4 is defined inside the folded tube 1.

[0024] A first medium channel 3 is formed between the heat exchange tube 2 and the folded tube 1. The length of the folded tube 1 is greater than the length of the heat exchange tube 2, and extension openings are formed at both ends. The two ends of the folded tube 1 and the heat exchange tube 2 are respectively used to connect to the corresponding manifold insertion holes.

[0025] The inner wall of the first medium channel 3 is uniformly provided with a plurality of ribs 9 along its circumference, and the ribs 9 are integrally extruded.

[0026] The rib 9 is used to guide the flow of the first medium disturbance path, enhance fluid disturbance, improve boundary layer heat transfer performance, and increase heat transfer efficiency.

[0027] The second medium channel 4 is provided with a folded fin 5 along the width direction. The crest 6 of the folded fin 5 is close to the upper inner wall, and the trough 7 is close to the lower inner wall. The folded fin 5 can evenly divide the second medium channel 4, improve the uniformity of fluid distribution, suppress local overheating, and form multiple flow equalization channels 8 arranged along the length direction.

[0028] The flow equalization channel 8 can increase the degree of turbulence per unit length and improve the heat exchange efficiency on the fluid side.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cooling tube structure for a three-medium heat exchanger, characterized in that... include: The cooling pipe body has a flat rectangular cross-section. The cooling pipe body has symmetrically arranged outwardly convex arc-shaped structures on both sides in the width direction; The interior of the cooling pipe body is provided with a partition rib along its thickness direction, and the partition rib seals and divides the internal cavity of the cooling pipe body into a first medium channel and a second medium channel. The two ends of the second medium channel are respectively provided with outward extensions.

2. The cooling tube structure of a three-medium heat exchanger according to claim 1, characterized in that: The inner wall of the first medium channel is provided with a plurality of first flow holes along the width direction of the cooling pipe body; The inner wall of the second medium channel is provided with a plurality of second flow holes, the diameter of the second flow holes being smaller than the diameter of the first flow holes.

3. A cooling tube structure for a three-medium heat exchanger, characterized in that... include: A folded tube, wherein the cross-section of the folded tube is a flat rectangular structure, and the interior of the folded tube defines a second medium channel; The second medium channel is provided with folded fins along the width direction of the folded tube; The crests of the folded fins are attached to the upper inner wall of the folded tube, and the troughs are attached to the lower inner wall, so as to divide the second medium channel into multiple independent flow equalization channels. A heat exchange tube is sleeved outside the folded tube, and a first medium channel is defined between the heat exchange tube and the folded tube. The length of the folded tube is greater than the length of the heat exchange tube.

4. The cooling tube structure of a three-medium heat exchanger according to claim 3, characterized in that: The inner wall of the first medium channel is uniformly provided with multiple ribs along the circumference.

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