Heat exchange device, heat exchange system and manufacturing method

Abstract

The present invention relates to the field of engineering heat exchange technology, and specifically to a heat exchange device, a heat exchange system and a manufacturing method. A heat exchange device comprises: a panel assembly, suitable for connection with a vibrator, the panel assembly comprises an upper panel and a lower panel arranged accordingly, a heat exchange flow channel is formed between the upper panel and the lower panel, the upper panel is provided with a plurality of sharp corners facing the lower panel, or the lower panel is provided with a plurality of sharp corners facing the upper panel, the space between the upper panel and the lower panel is suitable for the flow of cooling medium, the cooling medium is suitable for the flow power provided by a power pump, the upper panel is provided with a liquid inlet and a liquid outlet, the cooling medium enters from the liquid inlet, reaches the liquid outlet after passing through the heat exchange flow channel, and the sharp corners generate an acoustic flow effect with the cooling medium under the low-frequency vibration generated by the vibrator to achieve heat exchange. The present invention solves the problem that vibration-enhanced heat transfer requires the use of a fluid pulsation induction device to apply vibration to the heat exchange structure. The process involves a mass-spring-damping structure, which has the problems of complex structure and high cost.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering heat exchange, and in particular to a heat exchange device, a heat exchange system and a manufacturing method. Background Art

[0002] Enhanced heat transfer is of great significance to the structural optimization and energy efficiency improvement of energy equipment. Enhanced heat transfer technology is divided into active technology and passive technology according to whether it consumes external power. Active technologies mainly include mechanical agitation, surface vibration, fluid vibration, electromagnetic field, injection or suction, etc., which directly change the flow state through external energy; passive technologies mainly include treated surfaces, rough surfaces, developed surfaces, spoiler elements, vortex generators, spiral tubes, additives, jet impact, etc., which realize flow state changes around structural modeling optimization.

[0003] Surface vibration and fluid vibration, as vibration-enhanced heat transfer technologies, can effectively inhibit surface fouling of heat exchange structures and reduce fouling thermal resistance. Its main mechanism of action is to achieve mass transfer and heat transfer enhancement of heat exchange equipment by reducing or destroying the viscosity and thermal boundary layer near the wall.

[0004] The existing vibration-enhanced heat transfer technology requires the use of a fluid pulsation induction device to apply vibration to the heat exchange structure, and controlling the fluid pulsation or resonance requires a complex process route. Based on the above process route, elastic tube bundles, springs, resonators and other structures are set in the pipeline flow channel to stimulate the heat exchange pipeline to produce vibration. This process involves the structural matching design of mass-spring-damping, which increases the complexity of the structure on the one hand, and increases the difficulty of structure installation on the other hand, and increases the cost of implementing the process route. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the vibration enhanced heat transfer in the prior art, which requires the use of a fluid pulsation inducing device to apply vibration to the heat exchange structure. This process route involves a mass-spring-damping structural matching design, which has the defects of complex structure and high cost, thereby providing a heat exchange device, a heat exchange system and a manufacturing method.

[0006] In order to solve the above problems, the present invention provides a heat exchange device, comprising:

[0007] A panel assembly is suitable for being connected to a vibrator. The panel assembly includes an upper panel and a lower panel that are correspondingly arranged. A heat exchange flow channel is formed between the upper panel and the lower panel. The upper panel is provided with a plurality of sharp corners facing the lower panel, or the lower panel is provided with a plurality of sharp corners facing the upper panel. A cooling medium is suitable for flowing between the upper panel and the lower panel. The cooling medium is suitable for flow power provided by a power pump. The upper panel is provided with a liquid inlet and a liquid outlet. The cooling medium enters from the liquid inlet and reaches the liquid outlet after passing through the heat exchange flow channel. The sharp corners generate an acoustic flow effect with the cooling medium under the low-frequency vibration generated by the vibrator to achieve heat exchange.

[0008] Optionally, the sharp corner is arranged obliquely or perpendicularly to the panel.

[0009] Optionally, the angle between the angle bisector of the sharp angle and the upper panel or the lower panel is 30 to 90 degrees.

[0010] Optionally, the pointed corner is integrally formed with the upper panel or the lower panel.

[0011] A heat exchange system comprises the above-mentioned heat exchange device.

[0012] Optionally, it further includes a vibrator, a power pump and a cooling medium, wherein the vibrator is arranged below the bottom surface of the lower panel, and the power pump is used to input the cooling medium into the heat exchange flow channel.

[0013] Optionally, a thermally conductive silicone pad is provided between the vibrator and the lower panel.

[0014] Optionally, the amplitude of the vibrator is A, and the range of A is 0.5 to 5 mm.

[0015] Optionally, the apex angle of the sharp angle is arc-shaped, and the curvature diameter range of the apex angle is 2r=0.5-2.0A.

[0016] Optionally, the height of the sharp corner is h, h=10-20A, and the height of the sharp corner is 5-100 mm.

[0017] Optionally, the apex angle of the sharp corner is α, α=15-60°.

[0018] Optionally, the sharp corners are staggered, and along the flow direction of the cooling medium, the spacing between adjacent sharp corners is S1 = 4h*tan(α / 2) to 8h*tan(α / 2), and the design range of this parameter is 2.6mm to 460mm.

[0019] Optionally, along a direction perpendicular to the flow direction of the cooling medium, the spacing between adjacent sharp corners is L1 = 4h*tan(α / 2) to 8h*tan(α / 2), and the design range of this parameter is 2.6 mm to 460 mm.

[0020] A method for manufacturing a heat exchange device adopts an additive manufacturing method to manufacture an upper panel and a lower panel.

[0021] Optionally, the following steps are included:

[0022] 1) Select metal materials, perform geometric modeling, and design the upper panel, lower panel, and sharp corners;

[0023] 2) Design the dimensions of the upper and lower panels according to the dimensions of additive manufacturing, complete the processing of the plates and the peripheral head by machining, and complete the processing of the liquid inlet and outlet on the upper panel;

[0024] 3) Determine the molding posture, fix the panel, fill the protective gas, and preheat the upper or lower panel;

[0025] 4) Using selective laser cladding technology, sharp corners are added on the upper and lower panels respectively;

[0026] 5) heat treating the upper and lower panels formed with sharp corners, and machining the upper or lower panels by machining methods;

[0027] 6) Repeat steps 3) to 5) to mass produce the upper panel and the lower panel, and complete the welding and packaging of the upper panel, the lower panel, the side panel and the peripheral side head by welding;

[0028] 7) Perform heat treatment on the heat exchange components.

[0029] The technical solution of the present invention has the following advantages:

[0030] 1. The heat exchange device provided by the present invention includes a panel assembly, which is suitable for connection with a vibrator. The panel assembly includes an upper panel and a lower panel that are arranged correspondingly, a heat exchange flow channel is formed between the upper panel and the lower panel, the upper panel is provided with a plurality of sharp corners facing the lower panel, or the lower panel is provided with a plurality of sharp corners facing the upper panel, and the sharp corners are staggered. The upper panel and the lower panel are suitable for the flow of cooling medium, and the cooling medium is suitable for providing flow power by a power pump. The upper panel is provided with a liquid inlet and a liquid outlet. The cooling medium enters from the liquid inlet and reaches the liquid outlet after passing through the heat exchange flow channel. The sharp corners generate an acoustic flow effect with the cooling medium under the low-frequency vibration generated by the vibrator to achieve heat exchange. The low-frequency vibration of the vibrator is used to induce the fluid to generate an acoustic flow effect, and the external low-frequency vibration energy is effectively used to supplement the pumping kinetic energy of the fluid medium, so as to coordinate the fluid flow and effectively reduce the pump work of the equipment, thereby improving the economy of the heat exchange process. With the help of sharp corners, the acoustic streaming effect can be directly induced under different vibration conditions, avoiding the mass-spring-damping structural matching design required for existing ultrasonic resonance, greatly reducing the difficulty of process design. With the help of the low-frequency vibration energy of the vibrator, the acoustic streaming effect is induced near the sharp corners, and the generated acoustic streaming effect produces a jet impact in the flow channel, which reduces and destroys the boundary layer on the opposite side wall of the jet impact, realizes the enhancement of heat and mass transfer, completes the mutual coupling of the jet and the cooling medium for heat and mass exchange, and finally realizes the low-frequency vibration enhanced heat exchange process.

[0031] 2. In the heat exchange device provided by the present invention, the sharp corner is arranged to be inclined or perpendicular to the panel to match the flow direction of the cooling medium.

[0032] 3. In the heat exchange device provided by the present invention, the angle between the angle bisector of the sharp angle and the upper panel or the lower panel is 30 to 90 degrees, so that the sharp angle can be tilted or set with the panel.

[0033] 4. In the heat exchange device provided by the present invention, the sharp corner is integrally formed with the upper panel or the lower panel to enhance the connection strength of the sharp corner.

[0034] 5. The heat exchange system provided by the present invention includes the above-mentioned heat exchange device. Since it adopts any of the above-mentioned heat exchange devices, it has the advantages described in any of the above-mentioned items.

[0035] 6. The heat exchange system provided by the present invention also includes a vibrator, a power pump and a cooling medium. The vibrator is arranged below the bottom surface of the lower panel, the power pump is used to input the cooling medium into the heat exchange channel, and the power pump is used to provide power for the cooling medium to flow in the heat exchange channel.

[0036] 7. In the heat exchange system provided by the present invention, a thermally conductive silicone pad is provided between the vibrator and the lower panel, and the thermally conductive silicone pad is used to transfer the heat of the lower panel.

[0037] 8. In the heat exchange system provided by the present invention, the amplitude of the vibrator is A, the range of A is 0.5-5 mm, the top angle of the sharp corner is arc-shaped, the curvature diameter range is 2r=0.5-2.0A, and the top angle of the sharp corner is arc-shaped to facilitate the flow of cooling medium.

[0038] 9. In the heat exchange system provided by the present invention, the height of the sharp corner is h, h=10~20A, the height of the sharp corner is 5~100mm, and the top angle of the sharp corner is α, α=15~60°, so that the height and top angle of the sharp corner can be designed according to the amplitude.

[0039] 10. In the heat exchange system provided by the present invention, along the flow direction of the cooling medium, the spacing between adjacent sharp corners is S1 = 4h*tan(α / 2)~8h*tan(α / 2), and the design range of this parameter is 2.6mm~460mm; along the direction perpendicular to the flow direction of the cooling medium, the spacing between adjacent sharp corners is L1 = 4h*tan(α / 2)~8h*tan(α / 2), and the design range of this parameter is 2.6mm~460mm, so as to reasonably set the spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A front view of a heat exchange system provided in an embodiment of the present invention;

[0042] Figure 2 A front view of a heat exchange device provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of arranging sharp corners on a lower panel provided in an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of arranging sharp corners on a lower panel provided in an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of an inclined sharp angle provided in an embodiment of the present invention;

[0046] Figure 6 It is a schematic diagram of a vertically arranged sharp angle provided in an embodiment of the present invention.

[0047] Explanation of the reference numerals: 1. liquid inlet pipe; 2. panel assembly; 3. liquid outlet pipe; 4. vibrator; 5. upper panel; 6. lower panel; 7. vibration direction; 8. sharp corner; 9. heat exchange channel; 10. cooling medium. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] Example 1

[0053] like Figure 1 -6 shows a specific embodiment of the heat exchange device, comprising: a panel assembly 2, the panel assembly 2 comprises a corresponding upper panel 5, a lower panel 6, and a side panel connecting the upper panel 5 and the lower panel 6, and the upper panel 5, the lower panel 6 and the side panel are enclosed to form a closed accommodating space, and the accommodating space contains a cooling medium 10. It should be noted that a heat exchange channel 9 is formed between the upper panel 5 and the lower panel 6.

[0054] like Figure 1As shown, a liquid inlet and a liquid outlet are provided at the top of the upper panel 5, and a liquid inlet pipe 1 is provided corresponding to the liquid inlet, and a liquid outlet pipe 3 is provided corresponding to the liquid outlet, and the liquid inlet and the liquid outlet are located at both ends of the length direction of the upper panel 5, and the flowing cooling medium 10 enters the liquid inlet and flows out of the liquid outlet, and the cooling medium 10 flows along the length direction of the upper panel 5 and the lower panel 6. Figure 1 and Figure 2 As shown, the bottom surface of the upper panel 5 is provided with a plurality of sharp corners 8 facing the lower panel 6, and the top surface of the lower panel 6 is provided with a plurality of sharp corners 8 facing the upper panel 5. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the sharp corner 8 is inclined with respect to the upper panel 5 or the lower panel 6, and the angle between the angle bisector of the sharp corner 8 and the upper panel 5 or the lower panel 6 is 30-90°, and the angles between the upper panel 5 and the lower panel 6 are equal. Figure 1 and Figure 2 As shown, the sharp corner 8 and the upper panel 5, as well as the sharp corner 8 and the lower panel 6 are all integrally formed.

[0055] A heat exchange system includes the above heat exchange device, and also includes a vibrator 4, a power pump and a cooling medium, wherein the vibrator 4 is located below the bottom surface of the lower panel 6, and the power pump is arranged outside the heat exchange device to input the cooling medium into the heat exchange flow channel 9. It should be noted that, if Figure 1 , Figure 2 As shown, the vibration direction 7 of the vibrator 4 is horizontal. Figure 5 , Figure 6 As shown, the amplitude of the vibrator 4 is A, and the range of A is 0.5-5 mm. The top angle of the sharp corner 8 is arc-shaped, and the curvature diameter range of the top angle is 2r=0.5-2.0A; the top angle is α, α=15-60°, the sharper the top angle, the greater the corresponding acoustic flow force, and α needs to be designed according to the energy requirements for driving the acoustic flow effect; the bisector of the top angle of the sharp corner 8 is β, β=30-90°, and the inclination angle helps to control the direction of the acoustic flow jet, thereby reducing the flow pump work of the cooling medium 10, and can be tilted according to the height of the heat exchange flow channel 9. Since the sharp corner 8 is a plurality of, such as Figure 5As shown, the upper panel 5 and the lower panel 6 need to be arranged in a staggered manner. Along the flow direction of the cooling medium 10, that is, along the length direction of the lower panel 6 or the upper panel 5, the spacing between adjacent sharp corners 8 is S1 = 4h * tan (α / 2) ~ 8h * tan (α / 2), and the design range of this parameter is 2.6mm ~ 460mm; along the direction perpendicular to the flow direction of the cooling medium 10, that is, along the width direction of the lower panel 6 or the upper panel 5, the spacing between adjacent sharp corners 8 is L1 = 4h * tan (α / 2) ~ 8h * tan (α / 2), and the design range of this parameter is 2.6mm ~ 460mm. Through the staggered arrangement of the sharp corners 8, the acoustic flow vortex generated by the upper panel 5 and the lower panel 6 on the sharp corners 8 completes the transportation of the cooling medium 10 fluid.

[0056] During the specific implementation process, after the vibrator 4 starts working, it generates low-frequency vibrations, which on the one hand induce the sharp corners 8 in the heat exchange channel 9 to produce an acoustic flow effect and generate an acoustic flow jet effect along the normal direction of the sharp corners 8. On the other hand, the heat near the side wall is brought to the area between the sharp corners 8 of the upper panel 5 and the sharp corners 8 of the lower panel 6 through the acoustic flow effect, and then flows with the cooling medium 10 to enhance the heat exchange effect; the lower panel 6 and the upper panel 5 form a staggered acoustic flow vortex effect through the staggered sharp corners 8, and the acoustic flow vortices generated on both sides of each sharp corner 8 produce a coupling effect, and cooperate with the cooling medium 10 in the mainstream flow direction to produce a flow path; after the sharp corners 8 are set at a certain inclination angle along the mainstream flow direction, the generated acoustic flow vortex has a fluid driving effect in the mainstream direction, thereby effectively reducing the pumping power of the power pump of the cooling medium 10.

[0057] A method for manufacturing a heat exchange device comprises the following steps:

[0058] 1) Select metal materials, perform geometric modeling, and design the upper panel 5, the lower panel 6, and the sharp corner 8;

[0059] 2) Design the dimensions of the upper panel 5 and the lower panel 6 according to the dimensions of additive manufacturing, complete the processing of the plate and the peripheral head by machining, and complete the processing of the liquid inlet and the liquid outlet on the upper panel 5;

[0060] 3) Determine the molding posture, fix the panel, fill the protective gas, and preheat the upper panel 5 or the lower panel 6;

[0061] 4) Additive manufacturing of the sharp corners 8 is performed on the upper panel 5 and the lower panel 6 respectively by selective laser cladding technology;

[0062] 5) heat treating the upper panel 5 and the lower panel 6 formed with the sharp corner 8, and processing the upper panel 5 or the lower panel 6 by machining method;

[0063] 6) Repeat steps 3) to 5) to mass produce the upper panel 5 and the lower panel 6, and complete the welding and packaging of the upper panel 5, the lower panel 6, the side panel and the peripheral side head by welding;

[0064] 7) Perform heat treatment on the heat exchange components.

[0065] Example 2

[0066] This embodiment provides a structural design method for a sharp corner 8, and its parameter characteristics include: heat exchange channel height H, upper and lower panel 6 plate length L and width S, sharp corner 8 longitudinal spacing L1 and transverse spacing S1, sharp corner 8 curvature diameter 2r, sharp corner 8 height h, sharp corner 8 vertex angle α, inclination angle β. The above geometric parameters of the sharp corner 8 are designed according to the acoustic flow driving characteristics and heat exchanger structure design method;

[0067] Assume that the vibration frequency of the vibrator 4 is designed to be 50Hz, the total heat exchange demand Q of the vibrating wall is 105kW, the total heat exchange area is 2000mm long and 100mm wide, the temperature of the wall to be exchanged is tw=400℃, and a 50% volume concentration of ethylene glycol mixed solution is selected as the cooling medium 10 in the heat exchange channel. The physical parameters at room temperature 25℃ are: solution density is 1071g / L, and specific heat is 3.3kJ / (kg·℃). Assume that the initial mass flow rate of the cooling medium 10 is m=1.28kg / s, and the initial inlet temperature of the cooling medium 10 is t1=25℃. According to the law of conservation of energy, the outlet temperature of the cooling medium 10 is t2=t1+Q / (m·c), and t2=50℃ can be obtained by calculation.

[0068] The length and width L and S of the lower panel 6 and the upper panel 5 of the heat exchange channel are determined according to the actual vibration heat exchange surface, which are L = 2000mm and S = 100mm respectively. According to the convection heat transfer calculation formula, the convection heat transfer coefficient k1 inside the heat exchange channel is determined to be 1470W / (m 2 ℃);

[0069] According to the relationship between the straight channel convective heat transfer experimental correlation formula k1 and the Reynolds number Re, substituting the mass flow rate m and density ρ, the designed channel height H = 20 mm is obtained;

[0070] In this embodiment, it is assumed that the amplitude A of the vibrator 4 is 1 mm, and the curvature diameter of the top angle of the sharp corner 8 is 2r=A, that is, 1 mm;

[0071] The acoustic flow driving characteristics of the sharp corner 8 are: the smaller the vertex angle α, the greater the acoustic flow intensity. In this embodiment, α is set to 15°;

[0072] The height h of the sharp corner 8 affects the dissipation effect near the sharp corner 8. In this embodiment, h=10A, i.e., 10 mm;

[0073] The inclination angle β of the sharp corner 8 affects the mainstream driving force of the acoustic flow. In this embodiment, β=30°, and the angle between the acoustic flow direction and the mainstream direction is 30°, which helps the fluid to participate in fluid pumping in coordination with the mainstream direction to a certain extent;

[0074] The convective heat transfer correlation of the low-frequency acoustic streaming effect is modified to obtain the influencing relationship k2 (Re, L1, S1, 2r, h, α, β) between the heat transfer coefficient k2 and the Reynolds number Re and each characteristic geometric parameter, where L1 and S1 are the longitudinal and transverse spacings of the sharp corner 8 geometric feature, respectively, and the Reynolds number Re is calculated based on the mass flow rate m and the flow section height H and section width L;

[0075] In this embodiment, the actual heat transfer surface of the vibrator 4 is a plane feature, and a two-dimensional tensile sharp corner 8 structure is selected. At this time, the design parameter is L1, and the design L1=6h*tan(α / 2), that is, 16mm. The convective heat transfer coefficient k2 under the arrangement of the sharp corner 8 is calculated. Assuming that the convective heat transfer coefficient increases to 1600W / (m 2 ℃). According to the design process of the heat exchanger, taking the overall heat transfer capacity Q as the design target, the optimization design of the heat exchanger geometric parameters is carried out on the basis of the original parameter design, and the design length of the heat exchange flow channel 9 is reduced to L'=450mm. While shortening the process length, the flow of the working medium in the flow direction is promoted through the acoustic flow force, thereby reducing the flow loss of the cooling working medium 10 in the heat exchange channel.

[0076] The heat exchange system provided by the present invention has the following advantages: 1) With the help of the low-frequency vibration of the vibrator 4, the fluid is induced to produce an acoustic flow effect, and the external low-frequency vibration energy is effectively used to supplement the pumping kinetic energy of the cooling medium, so as to coordinate the mainstream flow and effectively reduce the pump power of the power pump, thereby improving the economy of the heat exchange process; 2) The sharp corner 8 of the heat exchange structure is directly arranged in the heat exchange flow channel, and other structures such as elastic tube bundles, spring structures and resonant bodies are not introduced, which effectively controls the structural failure problem of the heat exchanger and improves the working stability of the heat exchange structure; 3) With the help of the geometric characteristics of the sharp corner 8, the direct induction of the acoustic flow effect under different vibration conditions can be achieved, avoiding the mass-spring-damping structural matching design required for the existing ultrasonic resonance, and greatly reducing the difficulty of process design; 4) The vibration-induced acoustic flow effect is introduced from the high-frequency ultrasonic field to the low-frequency vibration (1Hz to 1kHz) to enhance the heat transfer of engineering machinery at a macroscopic scale (~mm), and the scale application space of vibration-enhanced heat exchange is effectively expanded.

[0077] As an alternative embodiment, the bottom surface of the upper panel 5 is provided with a plurality of sharp corners 8 facing the lower panel 6 , and the lower panel 6 is not provided with sharp corners 8 .

[0078] As an alternative embodiment, the upper panel 5 is not provided with the sharp corners 8 , and the top surface of the lower panel 6 is provided with a plurality of sharp corners 8 facing the upper panel 5 .

[0079] As an alternative implementation, Figure 6 As shown, the sharp corner 8 and the upper panel 5, as well as the sharp corner 8 and the lower panel 6 are all arranged vertically.

[0080] As an alternative implementation, Figure 4 As shown, along the width direction of the upper panel 5 and the lower panel 6 , the length of the sharp corner 8 may also be equal to the width of the upper panel 5 or the lower panel 6 .

[0081] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention.

Claims

1. A heat exchange system, characterized in that: include: A panel assembly (2) adapted to be connected to a vibrator (4), the panel assembly (2) comprising an upper panel (5) and a lower panel (6) which are arranged correspondingly, a heat exchange flow channel (9) being formed between the upper panel (5) and the lower panel (6), the upper panel (5) being provided with a plurality of sharp corners (8) facing the lower panel (6), or the lower panel (6) being provided with a plurality of sharp corners (8) facing the upper panel (5), a cooling medium (10) being adapted to flow between the upper panel (5) and the lower panel (6), the cooling medium (10) being adapted to be provided with flow power by a power pump, the upper panel (5) being provided with a liquid inlet and a liquid outlet, the cooling medium (10) entering from the liquid inlet and reaching the liquid outlet after passing through the heat exchange flow channel (9), the sharp corners (8) generating an acoustic flow effect with the cooling medium (10) under the low-frequency vibration generated by the vibrator (4), so as to achieve heat exchange; The angle between the angle bisector of the sharp angle (8) and the upper panel (5) or the lower panel (6) is 30 to 90 degrees; The amplitude of the vibrator (4) is A, and the range of A is 0.5 to 5 mm; The apex angle of the sharp corner (8) is arc-shaped, and the curvature diameter range of the apex angle is 2r=0.5-2.0A; The height of the sharp corner (8) is h, h=10-20A, and the height of the sharp corner (8) is 5-100 mm; The vertex angle of the sharp corner (8) is α, α=15-60°; The sharp corners (8) are arranged in a staggered manner, and along the flow direction of the cooling medium (10), the spacing between adjacent sharp corners (8) is S1=4h*tan(α / 2) to 8h*tan(α / 2), and the design range of this parameter is 2.6mm to 460mm; In a direction perpendicular to the flow direction of the cooling medium (10), the spacing between adjacent sharp corners (8) is L1=4h*tan(α / 2) to 8h*tan(α / 2), and the design range of this parameter is 2.6 mm to 460 mm; A method for manufacturing a heat exchange device, wherein an upper panel (5) and a lower panel (6) are manufactured by additive manufacturing; The following steps are involved: 1) Select metal materials, perform geometric modeling, and design the upper panel (5), lower panel (6) and sharp corners (8); 2) Designing the dimensions of the upper panel (5) and the lower panel (6) according to the dimensions of additive manufacturing, completing the processing of the plate and the peripheral head by machining, and completing the processing of the liquid inlet and the liquid outlet on the upper panel (5); 3) Determine the molding posture, fix the panel, fill the protective gas, and preheat the upper panel (5) or the lower panel (6); 4) additively manufacturing the sharp corners (8) on the upper panel (5) and the lower panel (6) by selective laser cladding technology; 5) heat treating the upper panel (5) and the lower panel (6) formed with the sharp corner (8), and processing the upper panel (5) or the lower panel (6) by a machining method; 6) Repeating steps 3) to 5) to mass produce the upper panel (5) and the lower panel (6), and completing the welding and packaging of the upper panel (5), the lower panel (6), the side panel and the peripheral side head by welding; 7) Heat treatment of the heat exchange device; The vibration-induced acoustic streaming effect is used to enhance heat transfer from high-frequency ultrasound to low-frequency vibration. Through the scientific design of the geometric structure parameters of the sharp corners (8), the heat transfer enhancement of engineering machinery at the macro scale is achieved, which effectively expands the applicable scale space of vibration-enhanced heat transfer. The range of low-frequency vibration is 1Hz to 1kHz, and the macro scale is millimeter level.

2. The heat exchange system according to claim 1, characterized in that: The sharp corner (8) is arranged to be inclined or perpendicular to the panel.

3. The heat exchange system according to claim 1, characterized in that: The pointed corner (8) is integrally formed with the upper panel (5) or the lower panel (6).

4. The heat exchange system according to claim 1, characterized in that: It also includes a vibrator (4), a power pump and a cooling medium (10), wherein the vibrator (4) is arranged below the bottom surface of the lower panel (6), and the power pump is used to input the cooling medium (10) into the heat exchange flow channel (9).

5. The heat exchange system according to claim 4, characterized in that: A heat-conducting silica gel pad is also provided between the vibrator (4) and the lower panel (6).

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