CN119934849A - Tubular air conditioning heat exchanger - Google Patents
Tubular air conditioning heat exchanger Download PDFInfo
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- CN119934849A CN119934849A CN202411948531.3A CN202411948531A CN119934849A CN 119934849 A CN119934849 A CN 119934849A CN 202411948531 A CN202411948531 A CN 202411948531A CN 119934849 A CN119934849 A CN 119934849A
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Abstract
本发明公开了一种管式空调热交换器，包括冷媒盒，其内侧设有换热管，所述冷媒盒内腔与换热管两端连接形成通路；所述翅片组表面开设有套接于换热管表面的套孔，包括多组沿套孔表面布置的双层复合翅片，每组复合翅片由第一压片和第二压片组合而成；压电振动组件，设置于所述翅片组的两端，用于对翅片组表面进行高频振动清理。本发明中，通过在双层翅片组的相对面利用CNC加工集成微小流体通道，并填充热管工作介质（如水、乙醇或丙酮），工作介质在翅片靠近换热管的一端吸热汽化，向翅片边缘或较薄处流动并散热冷凝，随后回流至换热管周围形成循环，有效利用热管技术显著提升了翅片的导热效率和温度均匀性。
The present invention discloses a tubular air-conditioning heat exchanger, including a refrigerant box, a heat exchange tube is arranged inside the refrigerant box, and the inner cavity of the refrigerant box is connected to the two ends of the heat exchange tube to form a passage; the surface of the fin group is provided with a sleeve hole that is sleeved on the surface of the heat exchange tube, including multiple groups of double-layer composite fins arranged along the surface of the sleeve hole, and each group of composite fins is composed of a first press plate and a second press plate; a piezoelectric vibration component is arranged at both ends of the fin group, and is used to perform high-frequency vibration cleaning on the surface of the fin group. In the present invention, by integrating micro fluid channels on the opposite sides of the double-layer fin group through CNC processing, and filling the heat pipe working medium (such as water, ethanol or acetone), the working medium absorbs heat and vaporizes at one end of the fin close to the heat exchange tube, flows to the edge or thinner part of the fin and dissipates heat and condenses, and then flows back to the periphery of the heat exchange tube to form a cycle, effectively utilizing the heat pipe technology to significantly improve the thermal conductivity and temperature uniformity of the fin.
Description
Technical Field
The invention relates to the technical field of air conditioner heat exchangers, in particular to a tubular air conditioner heat exchanger.
Background
Currently, a conventional air conditioning heat exchanger generally adopts a structure in which a single-layer fin is combined with a heat exchange tube, wherein the fin is generally made of a metal material (such as aluminum or copper), and heat inside the refrigerant tube is transferred to the outside air through the heat conductive property of the fin. However, in this structural design, the shape of the fin is mostly a simple straight sheet, and the heat exchange is completed only by natural convection and the heat conducting property of the metal material. In addition, the surface of the fin lacks special treatment, dust and particulate matters are easy to accumulate in long-term use, and heat exchange efficiency is affected. Meanwhile, the fin design depends on a single material, is limited by material performance, and is difficult to combine heat conductivity and mechanical strength.
However, the existing conventional technical scheme has the following drawbacks:
the heat transfer efficiency is limited, the heat transfer of the traditional single-layer fin structure mainly depends on the heat conduction performance of the materials of the fins, but the thermal contact area of the fins and the heat exchange tube is limited, a more efficient heat conduction path cannot be realized in the fins, the heat cannot be quickly transferred and uniformly distributed by utilizing the heat tube technology, and local overheating or uneven temperature is easily caused.
The convection heat exchange effect is insufficient, the straight sheet structure of the traditional fin is difficult to effectively disturb the airflow, and the convection heat exchange efficiency is greatly limited by the existence of the laminar flow state of the fluid. In addition, the surface of the fin is not specially treated, so that fluid turbulence is difficult to enhance or boundary layer effect is damaged, and heat exchange performance cannot be further improved.
The traditional fins are made of single metal materials, and have certain heat conduction performance, but the high-temperature strength, corrosion resistance and long-term use reliability of the materials are difficult to meet the requirements of complex working conditions, and the fins are easily affected by fatigue damage or environmental corrosion, so that the service life is shortened.
The traditional heat exchanger is lack of dustproof design, dust and particles are easy to accumulate on the surfaces of the fins during long-term operation, so that the heat exchange performance is reduced, manual cleaning is required to be carried out by stopping the heat exchanger regularly, and the maintenance cost and the interruption of operation time are increased.
Aiming at the defects of the traditional technical scheme, the invention provides the tubular air conditioner heat exchanger with higher heat exchange efficiency, more reliable structural performance and lower maintenance cost by combining the heat pipe technology, the double-layer composite fin structure, the bionic surface design and the piezoelectric vibration cleaning function, so as to solve the problems in the prior art.
Disclosure of Invention
The invention provides a tubular air conditioner heat exchanger, which improves heat exchange efficiency, structural reliability and dustproof performance by optimizing structural designs of a refrigerant box, a heat exchange tube, a fin group and a piezoelectric vibration assembly.
The tube type air conditioner heat exchanger includes:
The basic structure is as follows:
The inner side of the refrigerant box is provided with a heat exchange tube, and the inner cavity of the refrigerant box is connected with two ends of the heat exchange tube to form a passage;
The fin group is provided with trepanning sleeved on the surface of the heat exchange tube, and comprises a plurality of groups of double-layer composite fins arranged along the surface of the trepanning, and each group of composite fins is formed by combining a first pressing sheet and a second pressing sheet;
The piezoelectric vibration assemblies are arranged at two ends of the fin group and are used for cleaning the surfaces of the fin group through high-frequency vibration;
The first pressing sheet and the second pressing sheet are fixedly connected through hot-pressing sintering or a heat-conducting adhesive, a plurality of cold return channels and heat-conducting channels arranged around the periphery of the trepanning are arranged on opposite surfaces of the first pressing sheet and the second pressing sheet, an internal micro-channel structure is formed, heat pipe working media are filled in the micro-channels, an external cold sheet is arranged on one side of the first pressing sheet and one side of the second pressing sheet, the cold return channels are located on the inner side of the external cold sheet, and wing convex surfaces of micron-sized bionic fish scale protrusions and grooves are arranged on the outer surfaces of the fin groups and used for increasing turbulence and improving convection heat exchange efficiency. The design realizes high-efficiency heat conduction through the circulation of the heat pipe working medium in the back cooling flow channel and the heat conduction flow channel, and meanwhile, the wing convex surfaces of the bionic fish scale-shaped bulges and grooves obviously improve the airflow disturbance effect, and the heat exchange efficiency is improved.
And optimizing the airflow velocity, namely arranging wing convex surfaces on the outer surfaces of the first pressing sheet and the second pressing sheet, wherein the sections are wing-shaped, optimizing the airflow velocity and disturbing the fluid flow, and optimizing the design of Computational Fluid Dynamics (CFD) on the wing-shaped sections so as to maximize the air flow and the heat transfer efficiency. By means of wing-shaped section design, surface airflow speed is enhanced, fluid laminar flow state is destroyed, turbulence is formed, and convection heat exchange efficiency is further improved.
The size of the micro-channel and the size of the working medium are in the range of 10-500 micrometers, and the working medium of the heat pipe is water, ethanol or acetone. By controlling the sizes of the micro-channels of the back cooling flow channel and the heat conducting flow channel and filling working medium, the high efficiency of the heat pipe medium in the processes of heat absorption vaporization and condensation reflux is ensured, and the heat conducting performance of the fins is further improved.
And optimizing the bionic surface process, namely forming bionic fish scale-shaped protrusions and grooves on the outer surfaces of the fin groups through a laser micromachining or nanoimprint process, wherein the heights or depths of the bionic fish scale-shaped protrusions and grooves are in the range of 1-50 microns. The bionic fish scale-shaped structure remarkably improves the convection heat exchange efficiency by enhancing the surface turbulence degree, and meanwhile, the surface protrusions and the grooves are beneficial to reducing the adhesion of pollutants.
The piezoelectric vibration assembly comprises a strip fixing seat, an ear clamping seat and a piezoelectric ceramic body fixed on the surface of the ear clamping seat, wherein the ear clamping seat is connected with the surface of an external cooling plate of the fin group, high-frequency vibration is generated through the piezoelectric ceramic body to remove dust and particulate matters on the surface of the fin group, and the working frequency of the piezoelectric ceramic body is 20-100 khz. Through the piezoelectric vibration function of the piezoelectric vibration component, dust and particulate matters on the surfaces of the fins are effectively removed by high-frequency vibration, so that long-term heat exchange efficiency is maintained, and cleaning and maintenance cost is reduced.
The double-layer composite fin material is optimized in that the first pressing piece of the fin group is made of a metal material, the second pressing piece is made of a ceramic material, the metal material is copper or aluminum, and the ceramic material is aluminum oxide or silicon nitride. Through the combination of the metal material and the ceramic material, the high heat conductivity is ensured, and the mechanical strength and the long-term reliability of the fin structure are enhanced.
The heat pipe working medium flow direction is optimized, the back cooling flow channel and the heat conduction flow channel are arranged obliquely downwards, so that the heat pipe working medium can flow back to the inner side of the heat conduction flow channel by gravity after condensation, and the heat pipe working medium can conduct circulating heat transfer in the back cooling flow channel and the heat conduction flow channel through heat absorption vaporization and heat release condensation. Through the design of obliquely downward arrangement, the working medium realizes natural reflux by utilizing gravity, so that the circulation efficiency of the heat pipe is optimized, and the overall heat transfer effect is further improved.
And the electronic control system is used for cleaning the mode, wherein the vibration time and frequency of the piezoelectric vibration component are regulated by the electronic control system so as to realize an intermittent cleaning mode. The vibration time and frequency of the piezoelectric vibration component are adjusted intermittently through the electronic control system, so that the energy consumption is reduced, and meanwhile, the surface of the fin is kept clean.
According to the invention, through the optimal design of key components such as the refrigerant box, the fin group, the piezoelectric vibration component and the like, the heat transfer efficiency, the structural performance and the operation reliability of the tubular air conditioner heat exchanger are comprehensively improved, and the operation and maintenance cost is remarkably reduced.
The beneficial effects obtained by the invention are as follows:
1. in the invention, the micro fluid channels are integrated by CNC processing on the opposite surfaces of the double-layer fin group, and the heat pipe working medium (such as water, ethanol or acetone) is filled, so that the working medium absorbs heat and is vaporized at one end of the fin close to the heat exchange pipe, flows to the edge or thinner part of the fin, dissipates heat and condenses, and then flows back to the periphery of the heat exchange pipe to form circulation, thereby effectively improving the heat conduction efficiency and the temperature uniformity of the fin by effectively utilizing the heat pipe technology.
2. According to the invention, the micron-sized bionic fish scale-shaped bulges and grooves and the wing-shaped wing convex surfaces are processed on the outer surfaces of the fins, so that the surface textures of fish scales are simulated, the boundary layer effect is destroyed, the turbulence degree of fluid is enhanced, the convective heat transfer efficiency is improved, the flow velocity of surface airflow is obviously improved, the laminar flow state of fluid is destroyed, the turbulence is formed, and the convective heat transfer efficiency is enhanced by combining Computational Fluid Dynamics (CFD) optimization.
3. In the invention, the fin group structure is formed by compositing the first pressing sheet and the second pressing sheet, and the metal material (such as copper or aluminum) and the ceramic material (such as aluminum oxide or silicon nitride) are combined together by adopting the double-layer composite fin structure, so that the high heat conductivity of the metal and the high strength and high temperature resistance of the ceramic are fully utilized, the heat transfer efficiency is optimized, and the mechanical property and the long-term reliability of the fins are enhanced.
4. According to the invention, the piezoelectric vibration assemblies are arranged at the upper end and the lower end of the fin, and the high-frequency micro-vibration generated by the piezoelectric ceramic body is utilized, so that dust and particles are effectively prevented from adhering to the surface of the fin, the long-term high-efficiency heat exchange performance of the fin is maintained, and meanwhile, the cost of cleaning and maintenance is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is an exploded view of one embodiment of the present invention;
FIG. 3 is a schematic view of a fin assembly and piezoelectric vibration assembly according to one embodiment of the present invention;
FIG. 4 is a schematic view showing a surface structure of a fin group according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a sectional structure of a fin group according to an embodiment of the present invention;
FIG. 6 is a schematic view showing an exploded construction of a first press sheet and a second press sheet according to an embodiment of the present invention;
fig. 7 is a schematic diagram of the structure at a in fig. 6 according to an embodiment of the present invention.
Reference numerals:
100. A refrigerant box 110 and a heat exchange tube;
200. Fin group, 201, trepanning, 202, external cooling piece, 210, first pressing piece, 220, second pressing piece, 211, wing convexity, 212, back cooling flow channel, 213, heat conduction flow channel;
300. the piezoelectric vibration assembly, 310, a strip fixing seat, 320, an ear clamping seat.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
It is to be understood that this description is merely exemplary in nature and is not intended to limit the scope of the present invention.
A tube air conditioner heat exchanger provided in accordance with some embodiments of the present invention is described below with reference to fig. 1-7.
Example 1
The present embodiment provides a tube type air conditioner heat exchanger including:
the refrigerant box 100 is provided with a heat exchange tube 110 on the inner side, and the inner cavity of the refrigerant box 100 is connected with two ends of the heat exchange tube 110 to form a passage for circulating heat transfer of the refrigerant;
The fin group 200, the surface of the fin group 200 is provided with a trepanning 201 sleeved on the surface of the heat exchange tube 110, and the fin group comprises a plurality of groups of double-layer composite fins arranged along the surface of the trepanning 201, and each group of composite fins is formed by combining a first pressing sheet 210 and a second pressing sheet 220;
The piezoelectric vibration assemblies 300 are disposed at two ends of the fin group 200, and are used for performing high-frequency vibration cleaning on the surface of the fin group 200.
The fin micro-channel is designed in such a way that the first pressing sheet 210 and the second pressing sheet 220 are fixedly connected through hot-pressing sintering or a heat-conducting adhesive, a plurality of cooling back flow channels 212 and heat-conducting flow channels 213 arranged around the periphery of the sleeve holes 201 are arranged on opposite surfaces of the first pressing sheet and the second pressing sheet, so that an internal micro-channel structure is formed, and the micro-channels are filled with working media such as water, ethanol or acetone. The size of the channels of the back cooling channel 212 and the heat conducting channel 213 formed by CNC processing ranges from 10 micrometers to 500 micrometers, so that efficient endothermic vaporization and condensation reflux circulation of the working medium in the channels are ensured.
The bionic outer surface is designed in such a way that one side of the first pressing sheet 210 and the second pressing sheet 220 is provided with an outer cooling sheet 202, and the back cooling runner 212 is positioned at the inner side of the outer cooling sheet 202. The fin group 200 has its outer surface formed into a convex wing surface 211 of micro-scale bionic fish scale-shaped protrusions and grooves by laser micro-machining or nanoimprint process, and has a height or depth ranging from 1 to 50 micrometers for breaking the fluid boundary layer effect and enhancing turbulence.
The piezoelectric vibration assembly 300 comprises a strip fixing seat 310, an ear clamping seat 320 and a piezoelectric ceramic body fixed on the surface of the ear clamping seat 320, wherein the ear clamping seat 320 is connected with the surface of the outer cooling plate 202 of the fin group 200 and is contacted with the surface of the thinnest outer cooling plate 202 so as to form a vibration effect through the elastic deformation of the outer cooling plate 202, high-frequency vibration is generated through the piezoelectric ceramic body so as to remove dust and particles on the surface of the fin group 200, and the working frequency of the piezoelectric ceramic body is 20-100 khz.
The double composite material is optimized in that the first preform 210 is made of a metal material such as copper or aluminum, and the second preform 220 is made of a ceramic material such as aluminum oxide or silicon nitride, ensuring high thermal conductivity and mechanical strength of the fin.
The working medium circulation path is optimized, namely the back cooling flow channel 212 and the heat conducting flow channel 213 are arranged obliquely downwards, so that the working medium of the heat pipe can flow back to the inner side of the heat conducting flow channel 213 by utilizing gravity after condensation, and natural circulation is realized. The heat transfer efficiency and the temperature uniformity of the heat pipe are obviously improved through the design of a circulation path of endothermic vaporization and exothermic condensation.
The electronic control system adjusts the vibration time and frequency of the piezoelectric vibration assembly 300 to achieve an intermittent cleaning mode, further reducing energy consumption and extending assembly life.
In the working process, the refrigerant enters the refrigerant box 100 from the heat exchange tube 110 and transfers heat to the fin group 200. The working medium absorbs heat and evaporates in the back cooling flow channel 212, flows to the edge along the heat conducting flow channel 213 to dissipate heat and condense, and then flows back to the periphery of the heat exchange tube to form heat pipe circulation. The high efficiency heat exchanging performance is maintained by the enhanced turbulence effect of the wing convexity 211 and the high frequency vibration cleaning function of the piezoelectric vibration assembly 300.
Example 2
On the basis of the embodiment 1, the embodiment is further optimally designed to be suitable for complex working conditions, such as an automobile cooling system or industrial heat exchange equipment.
The fin combination structure is improved in that dense fin groups 200 are arranged on the trepanning 201, and the number of fins is increased to adapt to higher heat exchange requirements. The fin group 200 has a 30% increase in the number of composite fins as compared to example 1, further improving the overall heat transfer area and efficiency.
The working medium type and the micro-channel arrangement are optimized, wherein the channel arrangement forms of the back cooling channel 212 and the heat conducting channel 213 are designed in a partition manner, namely, the area close to the heat exchange tube 110 is arranged in a dense micro-channel manner so as to quickly absorb heat and vaporize in a high temperature area, and the area far from the heat exchange tube 110 is arranged in a sparse micro-channel manner so as to ensure the smoothness of the condensation process. The working medium is acetone, which has low vaporization latent heat and high heat transfer efficiency.
The bionic surface is designed in a multi-layer way, namely a super-hydrophobic coating is additionally added on the outer surface of the fin group 200, so that the antifouling and waterproof performances of the surface are further improved, the adhesion of external particles and water drops is reduced, the fluid resistance is reduced, and the service life is prolonged.
The number of the vibration modules of the piezoelectric vibration assembly 300 is increased from 2 to 4 and is uniformly arranged along the arrangement direction of the fin group 200. Each module independently adjusts working time and frequency through an electronic control system, and the vibration frequency range is enlarged to 50-120 khz so as to adapt to the working condition of higher dust concentration.
The high temperature resistant structure is enhanced, the first pressing sheet 210 and the second pressing sheet 220 are made of high heat conduction copper and silicon nitride ceramic materials, and meanwhile, a high temperature resistant coating is added on the inner wall of the heat conduction flow channel 213 so as to adapt to long-term use in high temperature industrial environment.
The working process comprises the following steps:
The refrigerant flows into the refrigerant box 100 through the heat exchange tube 110, transferring heat in the denser fin group 200. The first pressing piece 210 and the second pressing piece 220 are compounded to form a complete fin structure, the cold return flow channel 212 and the heat conduction flow channel 213 are arranged on the inner sides of the complete fin structure, the working medium rapidly completes the processes of heat absorption vaporization and condensation reflux, and the heat exchange efficiency is further improved by combining the airflow turbulence enhancement structure on the surface of the convex surface 211 of the wing. The combination of the super-hydrophobic coating and the multi-section vibration module ensures that the surface of the fin is always clean, and is suitable for long-time work in severe environments.
The working principle and the using flow of the invention are as follows:
the tubular air conditioner heat exchanger provided by the invention realizes high-efficiency heat exchange performance and long-term reliability by combining double-layer composite fins, a micro-channel heat pipe technology, bionic surface design and piezoelectric vibration cleaning functions. The working principle is as follows:
Heat transfer and convection heat exchange, namely, a refrigerant enters the refrigerant box 100 from the heat exchange tube 110, flows in the inner cavity of the refrigerant box 100 and transfers heat to the fin group 200 through the heat exchange tube 110.
The composite fins in the fin group 200 consist of the first and second fins 210 and 220, and rapidly spread heat over the entire fin surface by their high thermal conductivity. The fin surface enhances turbulence through the fin convex surface 211 of the bionic fish scale-shaped bulge and groove, damages the boundary layer and improves the convection heat exchange efficiency.
The heat pipe micro-channel circulates that a back cooling flow channel 212 and a heat conducting flow channel 213 inside the fin are formed by CNC processing and are filled with heat pipe working media such as water, ethanol or acetone. The working medium absorbs heat at one end near the heat exchange tube 110 and evaporates, flowing to the fin edges or thinner through the heat conduction flow channels 213. At the edges, the working medium dissipates heat and condenses and flows back to the periphery of the heat exchange tube 110 through the cold return flow channel 212, so that the circulation of heat absorption, vaporization, condensation and backflow is completed, and the heat conduction efficiency and temperature uniformity of the fins are improved.
Bionic surface effect the wing convexities 211 of the micro-scale bionic fish scale-shaped bulges and grooves on the surface of the fin group 200 simulate fish scale textures, the laminar flow state of air flow is destroyed, the turbulent flow of air flow is enhanced, and the convective heat transfer performance is further improved.
Piezoelectric vibration cleaning function, namely the piezoelectric vibration components 300 at two ends of the fin transmit vibration to the surface of the fin through the connection of the fixed strip seat 310 and the clamping ear seat 320 by utilizing the high-frequency vibration function of the piezoelectric ceramic body, and the vibration frequency range is 20-100 khz, so that dust and particulate matters on the surface of the fin are effectively removed, and the influence on heat exchange performance is prevented.
And the electronic control and cleaning management are that the vibration time and frequency of the piezoelectric vibration component 300 are regulated through the electronic control system, so that an intermittent cleaning mode can be realized, the energy consumption is reduced, and the long-term and efficient operation of the heat exchanger is ensured.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. A tube air conditioner heat exchanger, comprising:
The inner side of the refrigerant box (100) is provided with a heat exchange tube (110), and the inner cavity of the refrigerant box (100) is connected with two ends of the heat exchange tube (110) to form a passage;
The fin group (200), the surface of the fin group (200) is provided with a trepanning (201) sleeved on the surface of the heat exchange tube (110), the fin group comprises a plurality of groups of double-layer composite fins arranged along the surface of the trepanning (201), and each group of composite fins is formed by combining a first pressing sheet (210) and a second pressing sheet (220);
The piezoelectric vibration assemblies (300) are arranged at two ends of the fin group (200) and are used for cleaning the surfaces of the fin group (200) through high-frequency vibration;
The heat pipe cooling fin comprises a first pressing piece (210) and a second pressing piece (220), wherein the first pressing piece and the second pressing piece (220) are fixedly connected through hot-pressing sintering or a heat-conducting adhesive, a plurality of cooling back flow channels (212) and heat-conducting flow channels (213) which are arranged around the periphery of a sleeve hole (201) are arranged on opposite surfaces of the first pressing piece and the second pressing piece, an inner micro-channel structure is formed, heat pipe working media are filled in micro-channels, an outer cooling piece (202) is arranged on one side of the first pressing piece (210) and one side of the second pressing piece (220), the cooling back flow channels (212) are located on the inner side of the outer cooling piece (202), and wing convex surfaces (211) of micron-sized bionic fish scale protrusions and grooves are arranged on the outer surfaces of the fin groups (200) and are used for increasing turbulence and improving convection heat exchange efficiency.
2. A tube air conditioner heat exchanger according to claim 1 wherein the outer surfaces of the first and second preforms (210, 220) are provided with airfoil surfaces (211) having airfoil-shaped cross-sections that optimize airflow velocity and disturb fluid flow, the airfoil-shaped cross-sections being optimally designed by Computational Fluid Dynamics (CFD) to maximize air flow and heat transfer efficiency.
3. A tubular air conditioning heat exchanger according to claim 1 wherein the dimensions of the back cooling flow path (212) and the heat conducting flow path (213) are in the range of 10 to 500 microns and the heat pipe working medium is water, ethanol or acetone.
4. A tube air conditioner heat exchanger according to claim 1, wherein the fin group (200) has an outer surface formed with bionic fish scale-shaped protrusions and grooves by a laser micro-machining or nano-embossing process, and the height or depth of the bionic fish scale-shaped protrusions and grooves ranges from 1 to 50 micrometers.
5. The tube air conditioner heat exchanger as recited in claim 1, wherein the piezoelectric vibration assembly (300) comprises a fixed strip seat (310), a clamping ear seat (320) and a piezoelectric ceramic body fixed on the surface of the clamping ear seat (320), the clamping ear seat (320) is connected with the surface of an external cooling plate (202) of the fin group (200), high-frequency vibration is generated by the piezoelectric ceramic body to remove dust and particles on the surface of the fin group (200), and the working frequency of the piezoelectric ceramic body is 20 khz to 100 khz.
6. A tubular air conditioning heat exchanger according to claim 1, characterized in that the first preforms (210) of the fin group (200) are made of a metallic material, the second preforms (220) are made of a ceramic material, copper or aluminum, and the ceramic material is alumina or silicon nitride.
7. A tubular air conditioner heat exchanger according to claim 1, wherein the cold return flow path (212) and the heat conducting flow path (213) are arranged obliquely downwards, so that the heat pipe working medium can flow back to the inner side of the heat conducting flow path (213) by gravity after condensation, and the heat pipe working medium can transfer heat circularly in the cold return flow path (212) and the heat conducting flow path (213) through endothermic vaporization and exothermic condensation.
8. A tube air conditioner heat exchanger as claimed in claim 1 wherein the vibration time and frequency of said piezoelectric vibration assembly (300) is regulated by an electronic control system to achieve intermittent cleaning mode.
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| CN219415868U (en) * | 2022-11-30 | 2023-07-25 | 上海孚旺炉业有限公司 | Turbulent fin tube with concave-convex structure |
| CN116857686A (en) * | 2023-07-21 | 2023-10-10 | 成都艾赛仑智能科技有限公司 | Waste heat recovery device for waste discharge pipeline of gas stove |
| CN117308643A (en) * | 2023-11-29 | 2023-12-29 | 徐州盈量智能科技有限公司 | Fin assembly of wall-mounted air conditioner heat exchanger |
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| CN119934849B (en) | 2025-10-14 |
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