Orthogonal experiment of refraction nozzle in vent wash exhaust hood
He Hongqin1,Yuan Shouqi1,Zhang Jie1,Liu Xiaofan1,Gu Weihua2
(1.Technical and Research Center of Fluid Machinery Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China;2.Shanghai Xian Dai Architectural Design(Group)Co.,Ltd.,Shanghai 200041,China)
Abstract：The performance of nozzle has decisive influence on the oil cleaning of vent wash exhaust hood.In order to analyze the performance parameters of refraction nozzles,an orthogonal experiment was carried out.The relations with structural parameters,working conditions and hydraulic performance of refraction nozzle on vent wash exhaust hood were studied.An orthogonal array with five factors and four levels was selected in the experiment.The targets of range,spray area,water particle size were evaluated by using synthetical point system,and their relationships were found.The order of factors which affected spray performance were obtained through the orthogonal experiments: The sequence is working pressure,diameter of base circle,height of refractive face and angle of refractive face.The best working condition was that: the pressure of the vent wash exhaust hood was 0.3 MPa,the hole diameter and height of refractive face are both 1 mm,and the refraction angle for the nozzle was 120°,which gives the best spray uniformity,atomization and spray area.
[1]Li Mingchuan,Yin Zhihua,Guan Peng,et al.XRCC1 polymorphisms,cooking oil fume and lung cancer in Chinese women nonsmokers[J].Lung Cancer,2008,62:145-151.[2]Siegmann K,Sattler K.Aerosol from hot cooling oil,a possible health hazard[J].Aerosol Sci,1996,27(1):493-494.[3]何红勤,袁建平,张杰,等.烹饪油烟污染与净化技术[J].排灌机械,2007,25(1):62-64.He Hongqin,Yuan Jianping,Zhang Jie,et al.Cooking fume pollution and purifying technology[J].Drainage and Irrigation Machinery,2007,25(1):62-64.(in Chinese)[4]李世英.喷灌喷头理论与设计[M].北京:兵器工业出版社,1995.[5]高建民,任宁,顾峰,等.低频超声雾化喷头优化设计及试验[J].江苏大学学报:自然科学版,2009,30(1):1-4.Gao Jianmin,Ren Ning,Gu Feng,et al.Optimum design and experiment on low-frequency ultrasonic atomizing nozzles[J].Journal of Jiangsu University:Natural Science Edition,2009,30(1):1-4.(in Chinese)[6]Coutinho M A,Tomas P P.Characterization of raindrop size distributions at the Vale Formoso Experimental Erosion Center[J].Catena,1995,25:187-197.[7]Sourell H,Faci J M,Playán E.Performance of rotating spray plate sprinklers in indoor experiments[J].J Irrig Drain Eng,2003,129 (5):376-380.[8]任露泉.试验优化设计与分析[M].北京:高等教育出版社,2003.
