Heat exchange assembly and heat exchanger comprising same

Abstract

The utility model provides a heat exchange assembly and a heat exchanger comprising the heat exchange assembly, the heat exchange assembly is placed in a cold storage box, and the heat exchange assembly comprises a pipe body installed in the cold storage box and configured to allow liquid to pass through; the heat exchange fins are mounted on the outer wall of the tube body in the circumferential direction of the tube body; each heat exchange fin comprises a supporting part, one end of which is arranged on the outer wall of the tube body and extends outwards along the radial direction of the tube body; the heat exchange part is installed at the other end of the supporting part, and the heat exchange part is constructed to be an approximately-arc-shaped curved-surface thin plate so as to increase the heat exchange area; the space between the multiple heat exchange fins is filled with a refrigerant medium in the cold storage box, so that heat exchange is conducted between liquid in the pipe body and the refrigerant medium, and the temperature of the liquid in the pipe body is reduced.

Description

Technical Field

[0001] At least one embodiment of the present utility model relates to the technical field of energy storage, and particularly relates to a heat exchange component and a heat exchanger including the heat exchange component. Background Art

[0002] With the continuous consumption of energy, the energy crisis has become increasingly prominent, and energy conservation and consumption reduction have become key elements in development. Thus, energy storage technology has emerged. According to statistics, the application of energy storage technology can improve the energy utilization efficiency by 10%-20% and reduce energy consumption by 15%-30%. For example, in an air conditioning system, energy storage technology can be used to store excess cold energy or heat energy and release it when needed to balance the energy supply and demand relationship of the air conditioning system. This helps to avoid energy waste during peak periods and energy shortages during off-peak periods. However, in the actual application process, energy storage technology is usually restricted by the low heat exchange efficiency of the heat exchange component, which hinders the rapid development of energy storage technology.

[0003] To solve the above problems, the prior art provides a heat exchange component, which increases the heat exchange area of the heat exchange component and improves the heat exchange efficiency of the system by increasing the size and number of heat exchange fins.

[0004] However, for the existing heat exchange component, by increasing the size and number of heat exchange fins and solely pursuing an increase in the heat exchange area, although the overall heat exchange efficiency of the system has been improved to a certain extent, the heat exchange efficiency per unit area of the heat exchange component has decreased, and at the same time, the structure of the heat exchange component has become complicated and it is not easy to cast. Summary of the Utility Model

[0005] In view of this, the present utility model provides a heat exchange component, which improves the heat exchange area of the heat exchange component and at the same time improves the heat exchange efficiency per unit area of the heat exchange component.

[0006] According to an embodiment of the present utility model, there is provided a heat exchange component, which is placed inside a cold storage tank. The heat exchange component includes: a pipe body, installed inside the cold storage tank and configured to allow a liquid to pass through; and a plurality of heat exchange fins, installed on the outer wall of the pipe body along the circumferential direction of the pipe body; each heat exchange fin includes: a support portion, one end of which is installed on the outer wall of the pipe body and extends outward in the radial direction of the pipe body; and a heat exchange portion, installed at the other end of the support portion, the heat exchange portion being configured as a substantially arc-shaped curved thin plate to increase the heat exchange area; wherein, the refrigerant medium in the cold storage tank is filled between the plurality of heat exchange fins, so that the liquid inside the pipe body exchanges heat with the refrigerant medium to reduce the temperature of the liquid inside the pipe body.

[0007] According to an embodiment of the present invention, the heat exchange part is recessed towards the pipe body, and the cross-section of the heat exchange part is configured to be circular arc-shaped, and the central angle θ corresponding to the circular arc is 15° to 60°.

[0008] According to an embodiment of the present invention, the distance between the center of the circle where the heat exchange part is located and the outer wall of the pipe body is 4 times the inner diameter r of the pipe body.

[0009] According to an embodiment of the present invention, the support part is configured as a thin plate in a substantially rectangular shape, having a length L extending in the axial direction of the pipe body 3 , and one side is installed on the outer wall of the pipe body and extends outward in the radial direction of the pipe body.

[0010] According to an embodiment of the present invention, the width L of the support part extending in the radial direction of the pipe body 1 is equal to 2 times the inner diameter r of the pipe body.

[0011] According to an embodiment of the present invention, the thickness δ of the support part is 0.5 mm to 2 mm.

[0012] According to an embodiment of the present invention, the support part is embedded or welded on the outer wall of the pipe body.

[0013] According to an embodiment of the present invention, the number of the heat exchange fins is 4 or 6 or 8; wherein, the included angle between two adjacent ones of the multiple heat exchange fins installed on the outer wall of the pipe body is the same.

[0014] According to an embodiment of the present invention, there is provided a heat exchanger, including: a cold storage tank internally filled with a refrigerant medium; and a plurality of heat exchange components as described in the above embodiments, which are installed inside the cold storage tank in a matrix arrangement.

[0015] According to an embodiment of the present invention, when the distance L between the pipe bodies of two adjacent heat exchange components 2 is less than 8 times the inner diameter r of the pipe body, the width L of the support part extending in the radial direction of the pipe body 1 is set to 1 / 2 times the distance L between the pipe bodies of two adjacent heat exchange components 2 .

[0016] According to the heat exchange component of the above-mentioned embodiment of the present utility model, by installing a plurality of heat exchange fins on the outer wall of the pipe body along the circumferential direction of the pipe body, and constructing the heat exchange part of the heat exchange fin into a substantially arc-shaped curved thin plate, due to the arc shape of the heat exchange part itself, more areas with slow heat exchange can be covered. At the same time, two adjacent heat exchange parts divide a larger heat exchange area into multiple smaller heat exchange areas, which can significantly reduce the natural convection effect during the heat exchange process and strengthen heat conduction. Thus, the heat exchange component of this embodiment increases the heat exchange area of the heat exchange component while improving the heat exchange efficiency per unit area of the heat exchange component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the first embodiment of the heat exchange component of the embodiment of the present utility model;

[0018] Figure 2 is a three-dimensional schematic diagram of the second embodiment of the heat exchange component of the embodiment of the present utility model;

[0019] Figure 3 is a plan view of the first embodiment of the heat exchanger of the embodiment of the present utility model;

[0020] Figure 4 is a plan view of the second embodiment of the heat exchanger of the embodiment of the present utility model; and

[0021] Figure 5 is a comparison schematic diagram of the temperature distribution and liquid fraction of the refrigerant medium of the heat exchange component of the embodiment of the present utility model and the heat exchange component of the prior art at 5 minutes and 10 minutes of heat exchange.

[0022] In the figure:

[0023] 1 - cold storage tank;

[0024] 2 - pipe body;

[0025] 3 - heat exchange fin; 31 - support part; 32 - heat exchange part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the following will further describe the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0027] According to the inventive concept of one aspect of the present utility model, a heat exchange assembly is provided. The heat exchange assembly is placed inside a cold storage tank. The heat exchange assembly includes: a pipe body installed inside the cold storage tank and configured to allow liquid to pass through; and a plurality of heat exchange fins installed on the outer wall of the pipe body along the circumferential direction of the pipe body. Each heat exchange fin includes: a support portion having one end installed on the outer wall of the pipe body and extending outward in the radial direction of the pipe body; and a heat exchange portion installed at the other end of the support portion. The heat exchange portion is configured as a substantially arc-shaped curved thin plate to increase the heat exchange area. Wherein, the refrigerant medium in the cold storage tank is filled between the plurality of heat exchange fins, so that the liquid inside the pipe body exchanges heat with the refrigerant medium to reduce the temperature of the liquid inside the pipe body.

[0028] Figure 1 is a three-dimensional schematic diagram of the first embodiment of the heat exchange assembly of the embodiment of the present utility model; Figure 2 is a three-dimensional schematic diagram of the second embodiment of the heat exchange assembly of the embodiment of the present utility model; Figure 3 is a plan schematic diagram of the first embodiment of the heat exchanger of the embodiment of the present utility model; Figure 4 is a plan schematic diagram of the second embodiment of the heat exchanger of the embodiment of the present utility model.

[0029] According to an exemplary embodiment of the present utility model, please refer to Figures 1-4 , a heat exchange assembly is provided. The heat exchange assembly is placed inside the cold storage tank 1. The heat exchange assembly includes a pipe body 2 and a plurality of heat exchange fins 3. The pipe body 2 is installed inside the cold storage tank 1 and is configured to allow liquid to pass through. The plurality of heat exchange fins 3 are installed on the outer wall of the pipe body 2 along the circumferential direction of the pipe body 2. Each heat exchange fin 3 includes a support portion 31 and a heat exchange portion 32. One end of the support portion 31 is installed on the outer wall of the pipe body 2 and extends outward in the radial direction of the pipe body 2. The heat exchange portion 32 is installed at the other end of the support portion 31. The heat exchange portion 32 is configured as a substantially arc-shaped curved thin plate to increase the heat exchange area. Wherein, the refrigerant medium in the cold storage tank 1 is filled between the plurality of heat exchange fins 3, so that the liquid inside the pipe body 2 exchanges heat with the refrigerant medium to reduce the temperature of the liquid inside the pipe body 2.

[0030] In this embodiment, by installing a plurality of heat exchange fins 3 on the outer wall of the pipe body 2 along the circumferential direction of the pipe body 2 and configuring the heat exchange portion 32 of the heat exchange fin 3 as a substantially arc-shaped curved thin plate, due to the arc shape of the heat exchange portion 32 itself, more areas with slow heat exchange can be covered. At the same time, two adjacent heat exchange portions 32 divide a larger heat exchange area into multiple smaller heat exchange areas, which can significantly reduce the natural convection effect during the heat exchange process and strengthen heat conduction. Thus, the heat exchange assembly of this embodiment increases the heat exchange area of the heat exchange assembly while improving the heat exchange efficiency per unit area of the heat exchange assembly. Further, the heat exchange assembly of this embodiment also has the advantages of simple structure and convenient casting.

[0031] It should be noted that in this embodiment, the tube body 2 is a hollow tube. Further, the refrigerant medium in the cold storage tank 1 contacts the supporting portion 31 and the heat exchange portion 32 of the heat exchange fins 3 to realize the heat exchange between the liquid inside the tube body 2 and the refrigerant medium.

[0032] In some exemplary embodiments, referring to Figures 1-4 , the heat exchange portion 32 is recessed toward the tube body 2, and the cross-section of the heat exchange portion 32 is configured as an arc, and the central angle θ corresponding to the arc is 15° to 60°.

[0033] It should be noted that in this embodiment, the central angle θ corresponding to the arc is set to 15° to 60°, which can balance the optimization of the heat exchange efficiency of the heat exchange portion 32 and avoid interference between adjacent heat exchange portions 32. In other words, when the central angle θ corresponding to the arc is too small, the length of the heat exchange portion 32 extending in the circumferential direction is short, and the area with slow heat exchange that can be covered is small, and the heat exchange efficiency cannot be significantly improved. When the central angle θ corresponding to the arc is too large, the length of the heat exchange portion 32 extending in the circumferential direction is long, and adjacent two heat exchange portions 32 will interfere with each other, especially when the number of heat exchange fins 3 installed in the circumferential direction of the outer wall of the tube body 2 is large, it is easier to occur the situation of interference between adjacent two heat exchange portions 32.

[0034] In some exemplary embodiments, referring to Figures 3-4 , the distance between the center of the circle where the heat exchange portion 32 is located and the outer wall of the tube body 2 is 4 times the inner diameter r of the tube body 2.

[0035] In some exemplary embodiments, referring to Figures 1-2 , the supporting portion 31 is configured as a thin plate with a substantially rectangular shape and has a length L extending in the axial direction of the tube body 2 3 , and one side is installed on the outer wall of the tube body 2 and extends outward in the radial direction of the tube body 2.

[0036] In some exemplary embodiments, referring to Figures 1-4 , the width L of the supporting portion 31 extending in the radial direction of the tube body 2 1 is equal to 2 times the inner diameter r of the tube body 2.

[0037] It should be noted that in this embodiment, setting the width L of the supporting portion 31 extending in the radial direction of the tube body 2 1 to 2 times the inner diameter r of the tube body 2 can balance the optimization of the heat exchange efficiency of the heat exchange fins 3 and the structural strength of the supporting portion 31. In other words, when the width L of the supporting portion 31 extending in the radial direction of the tube body 2 1When it is too short, the distance between the heat exchange part 32 and the pipe body 2 is small, and the contact area between the heat exchange part 32 and the support part 31 and the refrigerant medium is reduced, which affects the improvement of the heat exchange efficiency. The width L of the support part 31 extending in the radial direction of the pipe body 2 1 When it is too long, under the influence of the gravity of the heat exchange part 32, the support part 31 is easily broken, and the structural strength is poor.

[0038] In some exemplary embodiments, referring to Figures 3-4 , the thickness δ of the support part 31 is 0.5 mm to 2 mm.

[0039] It should be noted that in this embodiment, setting the thickness δ of the support part 31 to 0.5 mm to 2 mm can take into account optimizing the heat exchange efficiency of the heat exchange fins 3 and the structural strength of the support part 31. In other words, when the thickness δ of the support part 31 is too large, the space occupied by the support part 31 is large, reducing the heat exchange space, resulting in a reduction in the refrigerant medium filling between the multiple heat exchange fins 3, which affects the improvement of the heat exchange efficiency. When the thickness δ of the support part 31 is too small, under the influence of the gravity of the heat exchange part 32, the support part 31 is easily broken, and the structural strength is poor.

[0040] In some exemplary embodiments, referring to Figures 1-2 , the support part 31 is embedded or welded on the outer wall of the pipe body 2.

[0041] In some exemplary embodiments, referring to Figures 1-4 , the number of the heat exchange fins 3 is 4 or 6 or 8. Among them, the included angle between two adjacent ones of the multiple heat exchange fins 3 installed on the outer wall of the pipe body 2 is the same.

[0042] It should be noted that by optimizing the number of the heat exchange fins 3 in the heat exchange component, in this embodiment, the number of the heat exchange fins 3 in the heat exchange component generally should not exceed 8, otherwise it will make the structure of the heat exchange component complicated and the heat exchange efficiency per unit area will decrease.

[0043] Figure 5 is a comparison schematic diagram of the temperature distribution and liquid fraction of the refrigerant medium of the heat exchange component of the embodiment of the present utility model and the heat exchange component of the prior art when exchanging heat for 5 minutes and 10 minutes.

[0044] The heat exchange fins of the heat exchange component of the prior art usually only have a plurality of rectangular thin plates formed on the outer wall of the pipe body along the circumferential direction of the pipe body. The comparison of the heat exchange efficiency between the heat exchange component of this embodiment and the heat exchange component of the prior art is as Figure 5As shown. By comparing the temperature distribution and liquid fraction of the refrigerant medium around the heat exchange component of this embodiment with those of the heat exchange component of the prior art at 5 minutes and 10 minutes of heat exchange, it can be seen that the change amounts of the temperature distribution and liquid fraction of the refrigerant medium around the heat exchange component of this embodiment are significantly greater than those of the heat exchange component of the prior art.

[0045] According to an exemplary embodiment of the present invention, please refer to Figures 3-4 , a heat exchanger is provided, which includes a cold storage tank 1 and a plurality of the heat exchange components described in the above embodiments. The cold storage tank 1 contains a refrigerant medium inside. A plurality of the heat exchange components described in the above embodiments are installed inside the cold storage tank 1 in a matrix arrangement.

[0046] It should be noted that, in this embodiment, the refrigerant medium in the cold storage tank 1 can be ice or low-temperature water.

[0047] Furthermore, the cold storage tank 1 of the heat exchanger in this embodiment can be connected to an external cold source, and the refrigerant medium in the cold storage tank 1, such as ice or low-temperature water, is used to store the cold energy of the external cold source. In other words, under the action of the external cold source, the refrigerant medium in the cold storage tank 1 stores cold energy in a solid ice state or a low-temperature liquid state. When it is necessary to output cold energy to the outside world, a liquid fluid at a relatively high temperature flows into the tube body 2 and exchanges heat with the refrigerant medium in the cold storage tank 1 to reduce the temperature of the liquid fluid inside the tube body 2, achieving the effect of outputting cold energy to the outside world.

[0048] In some exemplary embodiments, refer to Figures 3-4 , when the distance L 2 between the tube bodies 2 of two adjacent heat exchange components is less than 8 times the inner diameter r of the tube body 2, the width L 1 of the support portion 31 extending in the radial direction of the tube body 2 is set to be 1 / 2 times the distance L 2 between the tube bodies 2 of two adjacent heat exchange components, so as to provide an accommodation space for the heat exchange portion 32 to flow out.

[0049] The specific embodiments described above have further detailed the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat exchange component, characterized in that: The heat exchange component is placed inside the cold storage box (1), and the heat exchange component comprises: A pipe body (2) is installed inside the cold storage box (1) and is configured to allow liquid to pass through; and A plurality of heat exchange fins (3) are installed on the outer wall of the tube body (2) along the circumferential direction of the tube body (2); Each of the heat exchange fins (3) comprises: a support portion (31), one end of which is mounted on the outer wall of the tube body (2) and extends outwardly in the radial direction of the tube body (2); and A heat exchange portion (32) is mounted on the other end of the support portion (31), and the heat exchange portion (32) is configured as a substantially arc-shaped curved thin plate to increase a heat exchange area; The cold medium in the cold storage box (1) is filled between the plurality of heat exchange fins (3), so that the liquid inside the tube body (2) exchanges heat with the cold medium to reduce the temperature of the liquid inside the tube body (2).

2. The heat exchange assembly according to claim 1, characterized in that: The heat exchange portion (32) is recessed toward the tube body (2); the cross section of the heat exchange portion (32) is configured to be an arc shape; the central angle θ corresponding to the arc shape is 15° to 60°.

3. The heat exchange assembly according to claim 2, characterized in that: The distance between the center of the circle where the heat exchange portion (32) is located and the outer wall of the tube body (2) is 4 times the inner diameter r of the tube body (2).

4. The heat exchange assembly according to claim 1, characterized in that: The support portion (31) is configured as a substantially rectangular thin plate having a length L3 extending in the axial direction of the tube body (2), one side of which is mounted on the outer wall of the tube body (2) and extends outward in the radial direction of the tube body (2).

5. The heat exchange assembly according to claim 4, characterized in that: A width L1 of the support portion (31) extending in the radial direction of the tube body (2) is equal to twice the inner diameter r of the tube body (2).

6. The heat exchange assembly according to claim 4, characterized in that: The thickness δ of the support portion (31) is 0.5 mm to 2 mm.

7. The heat exchange assembly according to claim 1, characterized in that: The support portion (31) is embedded in or welded to the outer wall of the tube body (2).

8. The heat exchange assembly according to claim 1, characterized in that: The number of the heat exchange fins (3) is 4, 6 or 8; Among them, the included angles between two adjacent ones of the plurality of heat exchange fins (3) installed on the outer wall of the tube body (2) are the same.

9. A heat exchanger, characterized in that: include: A cold storage box (1) containing a refrigerant medium; as well as A plurality of heat exchange components according to any one of claims 1 to 8 are installed in a matrix arrangement inside the cold storage box (1).

10. The heat exchanger according to claim 9, characterized in that When the spacing L2 between the tube bodies (2) of two adjacent heat exchange assemblies is less than 8 times the inner diameter r of the tube body (2), the width L1 of the support portion (31) extending in the radial direction of the tube body (2) is set to 1 / 2 times the spacing L2 between the tube bodies (2) of the two adjacent heat exchange assemblies.

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