大功率高效率完全上进风燃气灶的研发

发布时间：2018-05-11 11:16

本文选题：完全上进风燃气灶 + 火焰特性试验台架　；参考：《华中科技大学》2015年硕士论文

【摘要】：面对高速发展的国民经济以及日益严峻的环境问题,调整能源结构,促进经济转型成为当下经济发展的重点。大力发展天然气产业,促进燃气灶行业的调整与持续发展,研究高效率大功率燃气灶的燃气灶已经成为家电厨卫领域的必然趋势。但是,传统的完全上进风燃气灶存在着功率衰减、局部黄焰、引射性能不佳以及效率不高的问题,这些问题导致其应用受到了极大的限制。本文采用实验与理论分析相结合的方法,通过优化进气管道有效解决功率衰减的问题。利用CFD数值模拟技术,对引射管进行了优化设计,提高了引射性能。同时设计了黄焰实验台架,研究了完全上进风燃气灶的黄焰界限,并通过调整外环功率优化了燃烧性能。用先进的CFD数值模拟技术对这款完全上进风燃烧器进行冷态和热态的建模计算。通过冷态流场的速度云图、压力云图、组分云图研究了其流动性能、混合性能以及引射性能,并通过热态模型的温度云图以及热效率计算研究了其燃烧热工特性。根据模拟计算结果,确定了燃气灶高性能的结构参数范围。最后在火焰特性试验台架上研究了一次空气、外/内环负荷比以及锅支架高度对燃烧性能的影响。按照新国标(GB 16410-2015),通过试验台架优化了此款完全上进风燃气灶的结构尺寸。实验监测表明,本项目研发的完全上进风燃气灶的热效率为66%,功率为4.2Kw,各项技术指标处于业内领先水平。
[Abstract]:In the face of the rapid development of national economy and increasingly severe environmental problems, adjusting the energy structure and promoting economic transformation has become the focus of current economic development. It has become an inevitable trend in the field of household appliances to develop natural gas industry and promote the adjustment and sustainable development of gas cooker industry. However, there are some problems such as power attenuation, local yellow flame, poor ejection performance and low efficiency in the traditional completely up-wind gas stoves. These problems have greatly limited their application. In this paper, the problem of power attenuation is effectively solved by optimizing the intake duct by combining experimental and theoretical analysis. The CFD numerical simulation technique is used to optimize the design of the ejector, and the ejection performance is improved. At the same time, the yellow flame test bench was designed, and the yellow flame limit of the complete upper inlet gas stove was studied, and the combustion performance was optimized by adjusting the power of the outer ring. The advanced CFD numerical simulation technique is used to model and calculate the cold and hot state of the complete upper air burner. The flow performance, mixing performance and ejection performance of the cold flow field were studied by the velocity cloud, pressure cloud and component cloud of the cold flow field, and the combustion thermal characteristics were studied by the temperature cloud diagram of the thermal model and the thermal efficiency calculation. Based on the simulation results, the range of structural parameters for high performance gas stoves is determined. Finally, the effects of primary air, load ratio of outer / inner ring and the height of the pot support on the combustion performance were studied on the flame characteristic test rig. According to the new national standard GB 16410-2015, the structural dimensions of the complete inlet gas stove are optimized by means of a test rig. The experimental results show that the thermal efficiency and power of the complete up-wind gas stove developed by this project are 66 and 4.2 Kwrespectively, and the technical indexes are in the leading level of the industry.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU996.75

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