Standardized radiator modules simplify high-power lamps and lanterns of stitching
Based on the three-dimensional aluminum ceramic radiator cooling topology, is under the framework of 3 d cooling topology, in order to further enhance efficiency of radiator, and the development of new type radiator with independent intellectual property rights, patent filing has been in progress. LiuYanFa is the preparation of large area and thin plane one of the effective methods of ceramic material, the using water as solvent instead of organic solvent flow technology, it has the characteristics of low toxicity and low pollution. Use multilayer low-temperature LiuYanFa preparation with small pore diameter and the pass-through hole of flake Al2O3 porous ceramics, the thermal fatigue properties is good. Except LiuYanFa can also by dry pressing method, vacuum suction casting, micro-arc oxidation, means and methods to achieve such as aluminum ceramic composite materials.
Based on low temperature LiuYanFa thermal preparation based on 3 d topology structure of the aluminum ceramic radiator, using structure function principle of testing the thermal resistance and junction temperature of the radiator under the same conditions of 60 w radiator module performance increase about 11%; Three-dimensional cooling topology definition of the various power radiator module, make the various power source interface specification standardization, radiator module can joining together to form larger module, for manufacturing, maintenance is simple and standardization provides the foundation, and does not affect the modelling of lamps and lanterns, can in the module on the basis of creativity, forming different styles of modelling of lamps and lanterns.
Application LiuYanFa and micro-arc oxidation method
Aluminum matrix composite ceramic with high specific strength, specific stiffness, good wear resistance, originally from aerospace technology to the strict requirement of material technology. General aluminum composite ceramic material has high temperature resistance, wear resistance, erosion resistance, corrosion resistance properties.
LiuYanFa, micro-arc oxidation is a kind of method used. Micro-arc oxidation is the use of liquid medium electrode surface plasma discharge to deal with the material of a kind of method. Plasma discharge channel and the highest temperature can reach 8000 , can generally be by XRD and SEM analysis of material composition and surface morphology. In the experiments, we prepared aluminum matrix composite ceramic radiator, is adopted to obtain a best way to dispersion stability of suspension of alumina powder, and then through the ball mill, add methyl cellulose and glycerin, etc., to continue a long time to ball mill, and put the ball after grinding of ceramic slurry vacuum defoaming, thus obtain the Al2O3 ceramic slurry. Ceramic slurry in low temperature cold YuanShang stretch forming, control the blade clearance for thin layer, can be single stretch film, stretch film layer after crystallization, repeated operation. Freeze drying after a long time, and then high temperature sintering, thermal insulation, short time when annealing furnace cooling to room temperature, can be aluminum Quito hole alumina ceramic chip.
The cooling efficiency is higher
By the structure function method, can test the thermal resistance curve are obtained. First through the forward voltage method, can be measured 13.386 mv/K K coefficient, light source used for the specific heat of the 6063 aluminum 900 j/Kg. K, thermal conductivity of materials is 200 w/(m.K), and aluminum ceramic radiator thermal conductivity on the surface of the alumina ceramics is 25 w/(m.K), specific heat capacity is 859 j/Kg. K, and aluminum ceramic radiator has smaller thermal memory characteristics, surface of porous ceramics, so in theory has better heat dissipation properties. Through the above test data, we learn that aluminum ceramic radiator thermal resistance is smaller than 6063 aluminum thermal resistance around 0.06. Thus it can be seen that under the condition of room temperature 25 or so, using the same 60 w light cases, aluminum ceramic radiator cooling efficiency higher, compared with the ordinary stereo cooling architecture radiator efficiency can improve by about 11%.
Not only that, aluminum radiator because the outer layer of Al2O3 ceramic, so as to make the radiator is more safe, more easily through safety tests. On the surface applied to outdoor conditions, less corrosion, so as to ensure the long-term trusted patience of lamps and lanterns. For aluminum adhesive viscosity of porous ceramics, ceramic surface zhong-ming ren, etc by means of adding silica with dry pressing preparation of porous aluminum ceramic materials, enhanced the adhesive viscosity of ceramic materials. Same for aluminum ceramic radiator, also will focus on its use in harsh environments consider further enhance their adhesive viscosity, this will be one of the highlights of the next step of work.
For radiator and the effects of the overall thermal performance, different material contact will also vary, the following results based on TH3000K light source, the source of K coefficient of 13.79 mv/K, when heat conduction medium for thermal conductivity silicone grease, thermal environment as a cold plate, respectively by using screws and paste light source on the cold plate test, the results show that for the thermal conductive silicone, fastening force for little effects on the performance of the heat dissipation, and the use of thermal conductive silicone node temperature of the light source under different binding force to work also suggests that in both cases the light source node temperature of the work. At the same time, we found that when using aluminum flexible graphite sheet, need larger fastening force, otherwise it will greatly increase the thermal resistance of thermal bonding layer. For the same light source, thermal resistance means that the larger node of light work at higher temperatures, thus exacerbate light attenuation.
By a single radiator fin assembly become module, realize the standardization of radiator module at the same time, can the lamps and lanterns of joining together to become more powerful, simple and effective system integration. Based on the modularization design, as well as matching illuminant, standard lens, pressure plate, drive power supply, etc., can realize simple assembly and maintenance of lamps and lanterns. On the basis of the core modules, in addition to achieve their unique appearance modelling of lamps and lanterns, also can form their own special products and brands.
Shaanxi Tang Hua energy companies by standardized light engine compatibility and interchangeability, and thus accelerate the wide application of LED technology, as the manufacturer of lamps and lanterns, lighting engineering company, and provide a better and more effective solution of high-power LED lighting applications.
Standardization of design and production, not only makes the company's products can compatible, easy to replace and maintain, but also to mass production, lower costs, make lighting upstream and downstream supply chain coordination with the more appropriate, in order to achieve more reliable and practical functional lighting.
----------Archled Technology Co.,Limited