Efficient fin type heat exchanger

Abstract

The utility model relates to the technical field of heat energy exchange equipment, in particular to an efficient fin type heat exchanger which comprises a base plate, a liquid conveying assembly and a fin assembly, the fin assembly is installed on the base plate, and the base plate is arranged around the fin assembly; the liquid conveying assembly penetrates through the fin assembly; the liquid conveying assembly comprises multiple sets of flow increasing components, the multiple sets of flow increasing components penetrate through the fin assembly at intervals, the multiple sets of flow increasing components are provided with arc-shaped faces for guiding the air body, and the flow increasing components are used for increasing the net flow area of the air body. By the adoption of the scheme, under the guidance of the arc-shaped faces of the multiple sets of flow increasing components, air cannot escape, the turbulent flow amount is reduced, the net flow area between the flow increasing components is increased, the surface contact area between the air body and the flow increasing components is increased, and therefore the heat exchange efficiency of the heat exchanger is improved; therefore, the problems that an existing round tube fin type heat exchanger is large in wind resistance at the high differential speed, and the heat exchange efficiency of the heat exchanger is low are solved.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange equipment, and in particular to a high-efficiency fin heat exchanger. Background Art

[0002] Fin heat exchangers, as an important component of heat exchange equipment, are widely used in various industrial and commercial environments. Traditional fin heat exchangers mostly use circular tubes. Although simple to manufacture, they have large wind resistance in certain application scenarios and their heat exchange efficiency needs to be improved.

[0003] There are currently some improved fin heat exchangers, such as using special materials or increasing fin density to improve heat exchange performance; however, these methods are often accompanied by increased costs and increased manufacturing difficulty.

[0004] Most traditional fin heat exchangers currently use circular tubes. Although they are simple to manufacture, they have large wind resistance in certain application scenarios and the heat exchange efficiency needs to be improved. At the same time, the design of the circular tube also limits the effective utilization area of ​​the fins, thereby restricting the improvement of heat exchange efficiency. Utility Model Content

[0005] In order to improve the problems of large wind resistance and low heat exchange efficiency of the existing circular tube fin heat exchanger at high speed, the present application provides a high-efficiency fin heat exchanger.

[0006] This application provides an efficient fin heat exchanger, which adopts the following technical solutions:

[0007] A high-efficiency fin heat exchanger, comprising:

[0008] substrate;

[0009] a fin assembly, wherein the fin assembly is mounted on the base plate, and the base plate is arranged around the fin assembly;

[0010] Infusion assembly; the infusion assembly is arranged through the fin assembly;

[0011] The infusion assembly includes multiple groups of flow-increasing components, which are spaced apart and penetrate the fin assembly. The multiple groups of flow-increasing components have arc-shaped surfaces for guiding wind bodies, and are used to increase the net flow area of ​​the wind body.

[0012] By adopting the above technical solution, a fin heat exchanger is assembled, and the fins are sequentially inserted into the multiple groups of flow-increasing components of the infusion component, and then one side of the combined fin component is installed on the base plate, and the remaining sides of the fin component are surrounded and fixed by the base plate to form a prototype of the fin heat exchanger; under the same windward area, the wind body enters from one side of the fin component, and the wind body passes through the multiple groups of flow-increasing components. Under the guidance of the curved surfaces of the multiple groups of flow-increasing components, the air will not escape, the turbulence is reduced, the net flow area between the flow-increasing components is increased, and the surface contact area between the wind body and the flow-increasing components is increased, thereby improving the heat exchange efficiency of the heat exchanger, thereby improving the problems of large wind resistance at high speed and low heat exchange efficiency of the existing circular tube fin heat exchanger.

[0013] Optionally, the flow-increasing components all have:

[0014] a first arc-shaped portion, the first arc-shaped portion being used to guide oncoming wind;

[0015] a second arc-shaped portion, the second arc-shaped portion being used to guide the leeward body;

[0016] The first arc-shaped portion and the second arc-shaped portion are integrally formed, and a cross-section of the combination of the first arc-shaped portion and the second arc-shaped portion has an elliptical shape.

[0017] By adopting the above technical solution, the cross-section of the combination of the first arc-shaped portion and the second arc-shaped portion is elliptical, which enhances the degree of air turbulence on the windward side; relative to the turbulence on the leeward side of the circular tube, air escapes on the leeward side of the circular tube, generating a large amount of turbulence, while the cross-section of the combination of the first arc-shaped portion and the second arc-shaped portion of the flow-increasing component is elliptical, the air does not escape, the turbulence on the leeward side is reduced, the overall heat exchange effect is improved, the thermal conductivity coefficient K is increased, and thus the heat exchange is enhanced; and the circular tubes of the same diameter are extruded to form an elliptical cross-section, which can accommodate more heat exchange fluid inside, further improving the heat exchange efficiency.

[0018] Optionally, the spacing between the flow-increasing components ranges from 22 to 26 mm.

[0019] By adopting the above technical solution, the spacing between the flow-increasing components ranges from 22 to 26 mm, which can form a relatively large air flow channel. For two heat exchangers with the same windward area, under the same air volume conditions and the same tube center distance, the net flow area between the tubes can be increased and the net surface wind speed can be reduced. At the same time, the turbulence on the leeward side of the elliptical tube can be effectively reduced, thereby reducing the resistance of the wind body and improving the heat exchange efficiency.

[0020] Optionally, the flow increasing component includes:

[0021] First Pipe Department;

[0022] a second tube portion, wherein the first tube portion and the second tube portion are integrally formed;

[0023] The distance between the first tube portion and the second tube portion ranges from 25.4 to 30 mm.

[0024] By adopting the above technical solution, the spacing between the first tube portion and the second tube portion ranges from 25.4 to 30 mm, which can further form a relatively large air flow channel. For two heat exchangers with the same windward area, under the same air volume conditions and the same tube center distance, the net flow area between the tubes can be increased and the net surface wind speed can be reduced. At the same time, the turbulence on the leeward side of the elliptical tube can be effectively reduced, thereby reducing the resistance of the wind body and improving the heat exchange efficiency.

[0025] Optionally, the wall thickness of the first tube portion and the second tube portion ranges from 0.32 to 0.35 mm.

[0026] By adopting the above technical solution, the wall thickness of the first tube portion and the second tube portion ranges from 0.32mm to 0.35mm. Compared with thick copper tubes, the thinner copper tube wall thickness can reduce thermal resistance and accelerate the transfer of heat from the fluid inside the tube to the fluid outside the tube, thereby improving heat exchange efficiency; it can also save copper materials and reduce manufacturing costs; and thin-walled copper tubes are lighter than thick-walled copper tubes, which helps to reduce the overall weight of the heat exchanger and facilitates installation and transportation.

[0027] Optionally, inner walls of the first tube portion and the second tube portion are provided with internal threaded portions.

[0028] By adopting the above technical solution, internal threaded portions are provided on the inner walls of the first tube portion and the second tube portion, which can cause the fluid to generate complex secondary vortex flow in the tube, increase the turbulence of the fluid, especially increase the disturbance of the boundary layer near the wall, destroy or thin the boundary layer of the fluid, and thus enhance heat exchange; in addition, the spiral groove can significantly improve the heat transfer coefficient inside and outside the tube during the heat transfer process, playing a role of bilateral enhancement. The specific mechanism includes the formation of a vortex layer, thinning or destruction of the boundary layer, replacement of the fluid in the center of the tube with the fluid near the tube wall, generation of secondary flow, etc., thereby effectively improving the heat exchange efficiency.

[0029] Optionally, the fin assembly includes:

[0030] Fin components, wherein the fin components are provided in multiple groups, and the fin components are sequentially inserted into the multiple groups of flow-increasing components;

[0031] The fin component is provided with a plurality of reinforcing parts, and the plurality of reinforcing parts are provided at the penetration locations of the plurality of groups of the flow-increasing components and the fin component.

[0032] By adopting the above technical solution, a reinforcement portion is provided at the intersection of the flow-increasing component and the fin component. On the one hand, the stability of the fin component can be improved, and deformation caused by low fin strength, which causes an increase in the wind resistance coefficient and reduces the heat exchange efficiency, can be reduced. On the other hand, the service life of the heat exchanger can be extended.

[0033] Optionally, the fin component is provided with a plurality of first through portions and a plurality of second through portions, and the plurality of first through portions and the plurality of second through portions are staggeredly opened on the fin component;

[0034] The first tube portion penetrates into the first through portion, and the second tube portion penetrates into the second through portion;

[0035] The first through portion is a reference point, and the inclination angle between the first through portion and the second through portion is in a range of 17°≤α≤20°.

[0036] By adopting the above technical solution, the inclination angle range between the first through portion and the second through portion is 17°≤α≤20°, which helps to form more effective fluid disturbance, increase the contact area between the fluid and the tube wall, thereby improving the heat transfer coefficient and enhancing the heat exchange effect.

[0037] In summary, this application has the following beneficial effects:

[0038] 1. By setting up multiple groups of flow-increasing components, under the same frontal area, the wind enters from one side of the fin assembly and passes through the multiple groups of flow-increasing components. Under the guidance of the curved surfaces of the multiple groups of flow-increasing components, the air will not escape, the turbulence is reduced, the net flow area between the flow-increasing components is increased, and the surface contact area between the wind body and the flow-increasing components is increased, thereby improving the heat exchange efficiency of the heat exchanger. Therefore, the problem of large wind resistance at high speed and low heat exchange efficiency of the existing circular tube fin heat exchanger is improved.

[0039] 2. By setting the first arc-shaped portion and the second arc-shaped portion, the cross-section of the combination of the first arc-shaped portion and the second arc-shaped portion is elliptical, which enhances the degree of air turbulence on the windward side; relative to the turbulence on the leeward side of the circular tube, air escapes on the leeward side of the circular tube, generating more turbulence, while the cross-section of the combination of the first arc-shaped portion and the second arc-shaped portion of the flow-increasing component is elliptical, air does not escape, reducing the turbulence on the leeward side, improving the overall heat exchange effect, increasing the thermal conductivity coefficient K, and thus enhancing heat exchange; and the circular tube of the same diameter is extruded to form an elliptical cross-section, which can accommodate more heat exchange fluid inside, further improving the heat exchange efficiency.

[0040] 3. The spacing between the flow-increasing components ranges from 22 to 26 mm, which can form a relatively large air flow channel. For two heat exchangers with the same frontal area, under the same air volume conditions and the same tube center distance, it can increase the net flow area between tubes and reduce the net surface wind speed. At the same time, it can also effectively reduce the turbulence on the leeward side of the elliptical tube, thereby reducing the resistance of the wind body and improving the heat exchange efficiency.

[0041] 4. The wall thickness of the first and second tube parts ranges from 0.32mm to 0.35mm. Compared with thick copper tubes, the thinner copper tube wall thickness can reduce thermal resistance and accelerate the transfer of heat from the fluid inside the tube to the fluid outside the tube, thereby improving heat exchange efficiency; it can also save copper materials and reduce manufacturing costs; and thin-walled copper tubes are lighter than thick-walled copper tubes, which helps to reduce the overall weight of the heat exchanger and facilitates installation and transportation.

[0042] 5. The inclination angle between the first through portion and the second through portion is in the range of 17°≤α≤20°, which helps to form more effective fluid disturbance, increase the contact area between the fluid and the tube wall, thereby improving the heat transfer coefficient and enhancing the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a diagram showing the overall structure of a high-efficiency fin heat exchanger disclosed in this embodiment;

[0044] Figure 2 is a partial cross-sectional view of a high-efficiency fin heat exchanger disclosed in this embodiment;

[0045] Figure 3 yes Figure 2 Magnified view of area A in center.

[0046] Description of reference numerals:

[0047] 1. Fin assembly; 11. Reinforcement portion; 12. First through portion; 13. Second through portion; 2. Infusion assembly; 3. Flow-increasing component; 31. First arc-shaped portion; 32. Second arc-shaped portion; 33. First tube portion; 34. Second tube portion. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1-3 This application is described in further detail.

[0049] The present application discloses an efficient fin heat exchanger, see Figure 1 , including a substrate, an infusion component 2 and a fin component 1, the fin component 1 is installed on the substrate, and the substrate is arranged around the fin component 1; the infusion component 2 is inserted into the fin component 1; the infusion component 2 includes multiple groups of flow-increasing components 3, and the multiple groups of flow-increasing components are inserted into the fin component 1 at intervals. The multiple groups of flow-increasing components 3 have an arc-shaped surface for guiding the wind body, and the flow-increasing components 3 are used to increase the net flow area of ​​the wind body.

[0050] Specifically, the fin heat exchanger is assembled, and the fins are sequentially inserted into the multiple groups of flow-increasing components 3 of the infusion component 2, and then one side of the combined fin component 1 is installed on the base plate, and the remaining sides of the fin component 1 are surrounded and fixed with the base plate to form the prototype of the fin heat exchanger; under the same windward area, the wind body enters from one side of the fin component 1, and the wind body passes through the multiple groups of flow-increasing components 3. Under the guidance of the curved surfaces of the multiple groups of flow-increasing components 3, the net flow area between the flow-increasing components 3 is increased, and the surface contact area between the wind body and the flow-increasing components 3 is increased, thereby improving the heat exchange efficiency of the heat exchanger, thereby improving the problem of large wind resistance at high speed of the existing circular tube fin heat exchanger and low heat exchange efficiency of the heat exchanger.

[0051] See also Figure 1 and Figure 2 Furthermore, the spacing between the flow-increasing components 3 is in the range of 22 to 26 mm. The spacing within this range can form a relatively large air flow channel. For two heat exchangers with the same frontal area, under the same air volume conditions and the same tube center distance, the net flow area between the tubes can be increased, the net surface wind speed can be reduced, and the turbulence on the leeward side of the elliptical tube can be effectively reduced, thereby reducing the resistance of the wind body and improving the heat exchange efficiency.

[0052] In this embodiment, the distance between the flow-increasing components 3 is 22 mm.

[0053] See also Figure 2 and Figure 3 Furthermore, each set of flow-increasing components 3 has a first arc-shaped portion 31 and a second arc-shaped portion 32, the first arc-shaped portion 31 is used to guide the oncoming wind body; the second arc-shaped portion 32 is used to guide the leeward body; the first arc-shaped portion 31 and the second arc-shaped portion 32 are integrally formed, and the cross-section of the combination of the first arc-shaped portion 31 and the second arc-shaped portion 32 has an elliptical shape.

[0054] Specifically, the first arc-shaped portion 31 and the second arc-shaped portion 32 are specifically an integrally formed elliptical copper tube; the cross-section of the combination of the first arc-shaped portion 31 and the second arc-shaped portion 32 is elliptical, which enhances the degree of air turbulence on the windward side; relative to the turbulence on the leeward side of the circular tube, air escapes on the leeward side of the circular tube, generating more turbulence, and the cross-section of the combination of the first arc-shaped portion 31 and the second arc-shaped portion 32 of the flow-increasing component 3 is elliptical, which reduces the amount of air escape and reduces the turbulence on the leeward side, thereby improving the overall heat exchange effect and increasing the thermal conductivity coefficient K, and the net flow area of ​​the elliptical copper tube is increased by 17 to 22% compared with the net flow area of ​​the circular tube, thereby enhancing heat exchange; and the circular tube of the same diameter is extruded to form an elliptical cross-section, which can accommodate more heat exchange fluid inside, and further improves the heat exchange efficiency.

[0055] See also Figure 1 and Figure 2Furthermore, each set of flow-increasing components 3 includes a first tube portion 33 and a second tube portion, and the first tube portion 33 and the second tube portion are integrally formed; the distance between the first tube portion 33 and the second tube portion ranges from 25.4 to 30 mm;

[0056] Specifically, the first tube portion 33 and the second tube portion are combined to form a U-shaped copper tube; the spacing between the first tube portion 33 and the second tube portion ranges from 25.4 to 30 mm, which can further form a relatively large air flow channel. For two heat exchangers with the same windward area, under the same air volume conditions and the same tube center distance, the net flow area between the tubes can be increased, the net surface wind speed can be reduced, and the turbulence on the leeward side of the elliptical tube can be effectively reduced, thereby reducing the resistance of the wind body and improving the heat exchange efficiency.

[0057] In this embodiment, the distance between the first tube portion 33 and the second tube portion is 25.4 mm.

[0058] See also Figure 1 and Figure 2 Furthermore, the inner walls of the first tube portion 33 and the second tube portion are provided with internal threaded portions; and the wall thickness of the first tube portion 33 and the second tube portion ranges from 0.32 mm to 0.35 mm.

[0059] Specifically, the inner spiral portion is an inner spiral groove, which can cause the fluid to generate complex secondary flow vortex flow in the tube, increase the turbulence of the fluid, especially increase the disturbance to the boundary layer near the wall, destroy or thin the boundary layer of the fluid, thereby enhancing heat exchange; in addition, the spiral groove can significantly improve the heat transfer coefficient inside and outside the tube during the heat transfer process, and play a role of bilateral enhancement. The specific mechanism includes the formation of a vortex layer, thinning or destroying the boundary layer, the replacement of the fluid in the center of the tube with the fluid near the tube wall, the generation of secondary flow, etc., thereby effectively improving the heat exchange efficiency.

[0060] In this embodiment, the wall thickness of the first tube portion 33 and the second tube portion is 0.32 mm. Compared with thick copper tubes, the thinner copper tube wall thickness can reduce thermal resistance and accelerate the transfer of heat from the fluid inside the tube to the fluid outside the tube, thereby improving heat exchange efficiency.

[0061] See also Figure 1 and Figure 2 Furthermore, the fin assembly 1 includes a fin component, which is provided with multiple groups, and the fin components are sequentially inserted into multiple groups of flow-increasing components 3; the fin component is provided with multiple reinforcement parts 11, and the multiple reinforcement parts 11 are arranged at the penetration points between the multiple groups of flow-increasing components 3 and the fin component.

[0062] Specifically, the reinforcement portion 11 is a reinforcement rib protruding from the surface of the fin and is integrally formed with the fin.

[0063] See also Figure 2 and Figure 3Furthermore, a plurality of first through portions 12 and a plurality of second through portions 13 are provided on the fin component, and the plurality of first through portions 12 and the plurality of second through portions 13 are staggeredly opened on the fin component; the first tube portion 33 penetrates into the first through portion 12, and the second tube portion penetrates into the second through portion 13; the first through portion 12 is a reference point, and the inclination angle range between the first through portion 12 and the second through portion 13 is 17°≤α≤20°.

[0064] Specifically, in this embodiment, the inclination angle between the first through portion 12 and the second through portion 13 is 17°, which is a preferred angle and can help form more effective fluid disturbance, increase the contact area between the fluid and the tube wall, thereby improving the heat transfer coefficient and enhancing the heat exchange effect.

[0065] The working principle of an efficient fin heat exchanger of this application is as follows:

[0066] Under the same frontal area, the wind enters from one side of the fin assembly and passes through multiple groups of flow-increasing components. That is, the first arc-shaped part guides the wind to flow along the surface of the flow-increasing component to the second arc-shaped part, and the second arc-shaped part guides the wind again, so that the air does not escape and the turbulence is reduced; the surface contact area between the wind and the flow-increasing component is increased, thereby improving the heat exchange efficiency of the heat exchanger, and the net flow area of ​​the flow-increasing component is increased by 17% to 22% compared with the net flow area of ​​the circular tube.

[0067] The fluid entering the flow-increasing component generates complex secondary vortex flow in the tube under the guidance of the internal threaded parts of the first tube part and the second tube part, which increases the turbulence of the fluid and effectively improves the heat exchange efficiency.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A high-efficiency fin heat exchanger, characterized by: include: substrate; A fin assembly (1), the fin assembly (1) being mounted on the base plate, and the base plate being arranged around the fin assembly (1); An infusion assembly (2); the infusion assembly (2) is arranged through the fin assembly (1); The infusion assembly (2) comprises a plurality of groups of flow-increasing components (3), the plurality of groups of flow-increasing components being arranged at intervals through the fin assembly (1), the plurality of groups of flow-increasing components (3) having arc-shaped surfaces for guiding air bodies, and the flow-increasing components (3) being used to increase the net flow area of ​​the air body.

2. The high-efficiency fin heat exchanger according to claim 1, characterized in that: The flow increasing components (3) all have: a first arc-shaped portion (31), the first arc-shaped portion (31) being used to guide oncoming wind; a second arc-shaped portion (32), the second arc-shaped portion (32) being used to guide the leeward body; The first arc-shaped portion (31) and the second arc-shaped portion (32) are integrally formed, and a cross-section of the combination of the first arc-shaped portion (31) and the second arc-shaped portion (32) has an elliptical shape.

3. The high-efficiency fin heat exchanger according to claim 1, characterized in that: The spacing between the flow-increasing components (3) ranges from 22 to 26 mm.

4. The high-efficiency fin heat exchanger according to claim 1, characterized in that: The flow increasing component (3) comprises: a first tube portion (33); a second tube portion, wherein the first tube portion (33) and the second tube portion are integrally formed; The distance between the first tube portion (33) and the second tube portion ranges from 25.4 to 30 mm.

5. The high-efficiency fin heat exchanger according to claim 4, characterized in that: The wall thickness of the first tube portion (33) and the second tube portion ranges from 0.32 to 0.35 mm.

6. The high-efficiency fin heat exchanger according to claim 5, characterized in that: The inner walls of the first tube portion (33) and the second tube portion are provided with internal threaded portions.

7. The high-efficiency fin heat exchanger according to claim 4, characterized in that: The fin assembly (1) comprises: Fin components, the fin components are provided in multiple groups, and the fin components are sequentially inserted into the multiple groups of flow-increasing components (3); The fin component is provided with a plurality of reinforcing parts (11), and the plurality of reinforcing parts (11) are provided at the penetration locations of a plurality of groups of the flow-increasing components (3) and the fin component.

8. The high-efficiency fin heat exchanger according to claim 7, characterized in that: The fin component is provided with a plurality of first through portions (12) and a plurality of second through portions (13), and the plurality of first through portions (12) and the plurality of second through portions (13) are staggeredly opened on the fin component; The first tube portion (33) penetrates into the first through portion (12), and the second tube portion penetrates into the second through portion (13); The first through portion (12) is a reference point, and the inclination angle between the first through portion (12) and the second through portion (13) is in the range of 17°≤α≤20°.

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