Heat exchanger and thermostatic thermal management system

Abstract

This utility model relates to the field of industrial thermal energy management and energy storage technology, and discloses a heat exchanger and a constant temperature thermal management system. The heat exchanger includes a heat exchange module and a heat storage module. At least one heat exchange module is provided, comprising a main body and an extension. The extension is arranged circumferentially along the main body and connected to it. A main channel is formed within the main body, and several microchannels are provided within the extension. A heat medium is disposed within each microchannel. The heat storage module covers the exterior of the heat exchange module and is integrally connected to it. The heat storage module is suitable for storing or releasing heat. In this utility model, the heat exchange module and heat storage module are integrally connected, and the microchannels are directly thermally coupled to the heat storage layer of the heat storage module, significantly shortening the heat conduction path and improving the overall heat exchange efficiency of the heat exchanger. The multiple microchannels increase the heat exchange area of ​​the heat exchanger, thereby increasing the heat exchange capacity of the heat exchange module and improving its heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of industrial thermal energy management and energy storage technology, specifically to heat exchangers and constant temperature thermal management systems. Background Technology

[0002] In the field of industrial thermal energy management and storage, solid thermal energy storage technology, with its high energy density and high-temperature resistance, has been widely applied in systems such as power peak shaving, waste heat recovery, and solar energy utilization. Specifically, in power peak shaving scenarios, this technology can convert excess electricity during off-peak hours into heat energy for storage, and release it during peak hours, thereby effectively balancing power grid supply and demand. In waste heat recovery, it can collect and store high-temperature waste heat generated during industrial production processes, improving energy utilization efficiency. In solar energy utilization systems, it can solve the problems of intermittency and instability of solar energy, ensuring a continuous energy supply.

[0003] However, current mainstream solid thermal energy storage systems generally suffer from slow charging rates. In certain regions or specific plant construction phases, the permitted duration of low-cost electricity supply for thermal energy storage is limited; for example, in some areas, the low-cost electricity period may only last a few hours each day. Furthermore, traditional heat exchange structures and thermal storage devices are typically designed separately, resulting in long heat transfer paths and significant heat losses, making it difficult to meet requirements for high responsiveness, high efficiency, and compact space, thus reducing the overall energy efficiency and economy of the system. Utility Model Content

[0004] In view of this, the present invention provides a heat exchanger and a constant temperature thermal management system to solve the problem that the heat exchange structure and heat storage device cannot absorb heat in a short time, resulting in low overall energy efficiency.

[0005] In a first aspect, this utility model provides a heat exchanger, including a heat exchange module and a heat storage module. The heat exchange module is at least one in number and includes a main body and an extension. The extension is arranged circumferentially along the main body and connected to the main body. A main channel is formed within the main body, and microchannels are arranged within the extension. A plurality of microchannels are provided, and a heat medium is disposed within each microchannel. The heat storage module covers the exterior of the heat exchange module and is integrally connected to it. The heat storage module is suitable for storing or releasing heat.

[0006] Beneficial effects: The heat exchange module and the heat storage module are connected as a whole, and the microchannels are directly thermally coupled to the heat storage layer of the heat storage module, which greatly shortens the heat conduction path and improves the overall heat exchange efficiency of the heat exchanger; the number of microchannels increases the heat exchange area of ​​the heat exchanger, thereby increasing the heat exchange capacity of the heat exchange module and improving the heat exchange efficiency.

[0007] In one alternative implementation, a plurality of the extensions are arranged circumferentially along the main body.

[0008] Beneficial effects: Several extensions are arranged around the circumference of the main body to form a ring-shaped multi-channel heat exchange network, so that when the high-temperature flue gas flows in the main body, the contact area with the extensions increases geometrically, thereby absorbing more heat energy in the same amount of time.

[0009] In one alternative embodiment, a plurality of the extensions are evenly spaced along the circumference of the main body.

[0010] Beneficial effects: Several extensions are evenly and spaced along the circumference of the main body, eliminating local heat absorption blind spots, achieving balanced heat absorption throughout the circumference of the main body, and further improving the heat absorption efficiency of the heat exchanger.

[0011] In one alternative implementation, the microchannel is a serpentine channel, or the microchannel is a straight channel.

[0012] In one alternative embodiment, a plurality of microchannels are arranged in a plurality of layers along the circumference of the main body, and the plurality of layers of microchannels are arranged parallel to each other.

[0013] Beneficial effects: By setting up several layers of microchannels, the heat absorption efficiency of the heat exchanger can be further improved, thereby enabling the collection of more heat energy in a short time.

[0014] In one optional embodiment, the axial cross-sectional dimension of the microchannel is L along the axial direction, satisfying 0.5mm≤L≤3mm.

[0015] In one alternative embodiment, the heat exchanger further includes an output structure connected to the heat storage module, the output structure being adapted to connect to a heat demand component.

[0016] Beneficial effects: By setting the output structure, the heat storage module can transfer heat to the heat-demanding components.

[0017] In one optional embodiment, the heat exchanger further includes a temperature measuring structure and a control structure, the temperature measuring structure being electrically connected to the control structure, the control structure being electrically connected to the output structure, and the temperature measuring structure being adapted to be mounted on a heat demand component.

[0018] Beneficial effects: The temperature of components with heat demand is tested by the temperature measuring structure, and the temperature information is transmitted to the control structure as an electrical signal. The control structure analyzes the temperature information and adjusts the output power of the output structure to adapt to the heat load at different times.

[0019] In one optional embodiment, the heat exchanger further includes a thermally conductive connection structure disposed between the heat exchange module and the heat storage module.

[0020] Beneficial effects: By placing the thermally conductive connection structure between the heat exchange module and the heat storage module, the heat exchange module and the heat storage module are integrated and connected, thereby improving the thermal coupling efficiency.

[0021] Secondly, this utility model also provides a constant temperature thermal management system, including the heat exchanger described above. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a side view of the heat exchange module and the heat storage module according to an embodiment of the present utility model.

[0024] Figure 2 This is a top view of the heat exchange module and the heat storage module according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the heat exchange module according to an embodiment of the present utility model;

[0026] Figure 4 This is another structural schematic diagram of the heat exchange module according to an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Heat exchange module; 11. Main body; 12. Extension section; 121. Microchannel; 20. Heat storage module. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, in a first aspect, a heat exchanger is provided, including a heat exchange module 10 and a heat storage module 20. The heat exchange module 10 is provided with at least one component and includes a main body 11 and an extension 12. The extension 12 is arranged circumferentially along the main body 11 and is connected to the main body 11. A main channel is formed in the main body 11, and microchannels 121 are provided in the extension 12. A plurality of microchannels 121 are provided, and a heat medium is provided in the microchannels 121. The heat storage module 20 covers the outside of the heat exchange module 10 and is integrally connected to the heat exchange module 10. The heat storage module 20 is suitable for storing or releasing heat.

[0032] In the heat exchanger of this embodiment, the heat exchange module 10 and the heat storage module 20 are integrally connected. The microchannel 121 is directly thermally coupled to the heat storage layer of the heat storage module 20, which greatly shortens the heat conduction path and improves the overall heat exchange efficiency of the heat exchanger. The multiple microchannels 121 increase the heat exchange area of ​​the heat exchanger, thereby increasing the heat exchange capacity of the heat exchange module 10 and improving the heat exchange efficiency.

[0033] Specifically, such as Figure 1 As shown, in this embodiment, the heat exchange module 10 is provided with twelve modules.

[0034] It is understood that in other alternative implementations, the number of heat exchange modules 10 can be adjusted according to the actual situation.

[0035] Specifically, in this embodiment, the main body 11 is a pipe, and the extension 12 is inserted into the main body 11. The main body 11 guides the high-temperature flue gas flow through to achieve rapid heat exchange.

[0036] Specifically, the microchannel 121 is made of stainless steel and forms a high-density channel structure through methods such as laser welding or corrosion-welding.

[0037] Understandably, the microchannel 121 can also be supported by other high thermal conductivity metal materials, such as aluminum alloys and copper.

[0038] It should be noted that the heat transfer medium can be water, heat transfer oil, air, etc.

[0039] It should be noted that the material of the thermal storage module 20 can be selected according to the temperature level and performance requirements. When the heat exchanger is suitable for high-temperature and high-heat systems, magnesia bricks, aluminosilicate bricks, ceramic bricks, etc. can be selected as the material of the thermal storage module 20. When the heat exchanger is suitable for constant-temperature output systems, phase change materials (PCM) such as paraffin, fatty acids, and salts can be selected as the material of the thermal storage module 20. When the heat exchanger is suitable for fast-response systems, graphite, metal foam, metal composite materials, etc. can be selected as the material of the thermal storage module 20.

[0040] Furthermore, the thermal storage module 20 can be a single-layer material; the thermal storage module 20 can also be a multi-layer composite arrangement, such as using a thermally conductive material in the outer layer and a high specific heat / phase change material in the inner layer.

[0041] In one embodiment, such as Figure 1 and Figure 3 As shown, a plurality of extensions 12 are arranged circumferentially along the main body 11. The plurality of extensions 12 are arranged circumferentially along the main body 11 to form an annular multi-channel heat exchange network, so that when the high-temperature flue gas flows in the main body 11, the contact area with the extensions 12 increases geometrically, thereby absorbing more heat energy in the same amount of time.

[0042] Specifically, the main body 11 is a circular tube, and there are six extensions 12, which surround the outer periphery of the main body 11. Each extension 12 has multiple microchannels 121.

[0043] Of course, in other alternative embodiments, the number of extensions 12 can be adjusted according to the actual situation.

[0044] Furthermore, such as Figure 1 As shown, a plurality of extensions 12 are evenly spaced along the circumference of the main body 11. The even and spaced arrangement of the plurality of extensions 12 along the circumference of the main body 11 eliminates local heat absorption blind spots, realizes balanced heat absorption of the main body 11 in the entire circumference, and further improves the heat absorption efficiency of the heat exchanger.

[0045] Of course, in other alternative embodiments, the extension 12 may also be symmetrically arranged along the circumference of the main body 11, or the angles between two adjacent extensions 12 may be unequal.

[0046] In one embodiment, such as Figure 2 As shown, microchannel 121 is a linear channel.

[0047] Specifically, along the axial direction of the microchannel 121, the microchannel 121 is designed without bends.

[0048] Of course, in other alternative embodiments, the microchannel 121 can also be a serpentine channel, thereby increasing the contact area with the heat storage module 20 in the same length and improving the heat transfer efficiency.

[0049] In one embodiment, such as Figure 1 As shown, several layers of microchannels 121 are arranged circumferentially along the main body 11, and the layers of microchannels 121 are arranged parallel to each other. By setting several layers of microchannels 121, the heat absorption efficiency of the heat exchanger is further improved, thereby enabling the collection of more heat energy in a short time.

[0050] It should be noted that the number of microchannels 121 can be selected according to actual needs.

[0051] In the first embodiment, such as Figure 3 As shown, each extension 12 is provided with nine microchannels 121, and three microchannels 121 form a group. The three groups of microchannels 121 are arranged in parallel along the radial direction of the main body 11.

[0052] In the second embodiment, such as Figure 4 As shown, each extension 12 is provided with five microchannels 121, and two adjacent microchannels 121 are staggered with each other along the circumference of the main body 11.

[0053] In one embodiment, such as Figure 3 As shown, along the axial direction of the microchannel 121, the axial cross-sectional dimension of the microchannel 121 is L, which satisfies 0.5mm≤L≤3mm.

[0054] It should be noted that when the axial cross-sectional dimension L of the microchannel 121 is less than 0.5 mm, the structural size of the microchannel 121 is too small, which is not conducive to processing; when the axial cross-sectional dimension L of the microchannel 121 is greater than 3 mm, the volume occupied by the microchannel 121 in the heat exchanger is too large, which leads to a smaller volume of the heat storage module 20, resulting in a smaller amount of heat that can be stored, which does not meet the requirements.

[0055] Specifically, in this embodiment, the axial cross-section of the microchannel 121 is square.

[0056] Understandably, the axial cross-sectional dimensions of the microchannel 121 can be adjusted according to actual conditions. The maximum side length of the square is Lmax, where Lmax ≤ 3mm, and the minimum side length of the square is Lmin, where 0.5mm ≤ Lmin.

[0057] Of course, in other alternative embodiments, the axial cross-section of the microchannel 121 can also be circular. The diameter of the circle can be adjusted according to the actual situation. The maximum diameter of the circle is 3mm and the minimum is 0.5mm.

[0058] In one embodiment, the heat exchanger further includes an output structure connected to the heat storage module 20, which is adapted to connect to components requiring heat. By providing the output structure, heat transfer from the heat storage module 20 to the components requiring heat is achieved.

[0059] Furthermore, the heat exchanger also includes a temperature measuring structure and a control structure. The temperature measuring structure is electrically connected to the control structure, and the control structure is electrically connected to the output structure. The temperature measuring structure is suitable for installation on the heat-demanding components. The temperature measuring structure tests the temperature of the heat-demanding components and transmits the temperature information as an electrical signal to the control structure. The control structure analyzes the temperature information and adjusts the output power of the output structure to adapt to the heat load at different times.

[0060] In one embodiment, the heat exchanger further includes a thermally conductive connection structure disposed between the heat exchange module 10 and the heat storage module 20. By placing the thermally conductive connection structure between the heat exchange module 10 and the heat storage module 20, the heat exchange module 10 and the heat storage module 20 are integrally connected, thereby improving the thermal coupling efficiency.

[0061] Specifically, the thermally conductive connection structure is a thermally conductive adhesive, with both sides of the adhesive connected to the heat exchange module 10 and the heat storage module 20 respectively, thereby enabling the heat exchange module 10 and the heat storage module 20 to be integrated.

[0062] Of course, in other alternative embodiments, the heat exchange module 10 and the heat storage module 20 can also be integrally formed by metal sintering; or, the heat exchange module 10 and the heat storage module 20 can also be integrally formed by mechanical clamping / hot pressing.

[0063] In one embodiment, the thermal storage module 20 includes a plurality of thermal storage units, each of which is provided with at least one heat exchange module 10, and the plurality of thermal storage units are interconnected to improve the adaptability of the thermal storage module 20.

[0064] According to an embodiment of the present invention, in a second aspect, a constant temperature thermal management system is provided, including the heat exchanger described above.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A heat exchanger, characterized by, include: A heat exchange module (10) is provided, the heat exchange module (10) includes a main body (11) and an extension (12), the extension (12) is arranged circumferentially along the main body (11), the extension (12) is connected to the main body (11), a main channel is formed in the main body (11), a microchannel (121) is provided in the extension (12), a plurality of microchannels (121) are provided, and a heat medium is provided in the microchannels (121); A heat storage module (20) is provided, which covers the outside of the heat exchange module (10) and is integrally connected to the heat exchange module (10). The heat storage module (20) is suitable for storing or releasing heat.

2. The heat exchanger of claim 1, wherein Several of the extensions (12) are arranged circumferentially along the main body (11).

3. The heat exchanger of claim 2, wherein Several extensions (12) are evenly spaced along the circumference of the main body (11).

4. The heat exchanger according to any one of claims 1 to 3, characterized in that The microchannel (121) is either a serpentine channel or a straight channel.

5. The heat exchanger according to claim 4, characterized in that, Several layers of microchannels (121) are arranged along the circumference of the main body (11), and the layers of microchannels (121) are arranged parallel to each other.

6. The heat exchanger according to any one of claims 1-3, characterized in that, Along the axial direction of the microchannel (121), the axial cross-sectional dimension of the microchannel (121) is L, which satisfies 0.5mm≤L≤3mm.

7. The heat exchanger according to any one of claims 1-3, characterized in that, The heat exchanger also includes an output structure connected to the heat storage module (20), and the output structure is adapted to be connected to the heat demand component.

8. The heat exchanger according to claim 7, characterized in that, The heat exchanger further includes a temperature measuring structure and a control structure. The temperature measuring structure is electrically connected to the control structure, and the control structure is electrically connected to the output structure. The temperature measuring structure is adapted to be installed on the heat demand component.

9. The heat exchanger according to any one of claims 1-3, characterized in that, The heat exchanger also includes a thermally conductive connection structure, which is disposed between the heat exchange module (10) and the heat storage module (20).

10. A constant temperature thermal management system, characterized in that, The heat exchanger includes any one of claims 1 to 9.

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