In order to reduce the effect of cooking fume pollution on environment,the influence on the cooking fume′s cleaning effect of avent wash exhaust hood by the atomizing characteristic of nozzle was discussed.The experiments of the globoidal sector and the angle including 115°,120°,135°,140°,150° of direct sector refraction nozzle were carried out.Several parameters,i.e.,velocity of flow,range of the nozzle,spray area,size of grain,and water distribution for the six refraction nozzles were measured under five pressures.The atomization performance was analyzed.The relations between these parameters were determined.Through the experiments it was found that the inlet pressure is directly proportional to the velocity of flow,range of the nozzle and spray area.The inlet pressure is inversely proportional to the size of grain.The best working pressure of the vent wash exhaust hood is 0.30 MPa.The cooking fume′s clea-ning effect of direct sector is better than globoidal sector refraction nozzle.The angle of 120°was selected for straight refractive nozzle.Its uniformity coefficient,atomization and spray area are the best.
HE Hong-Qin, Yuan-Shou-Qi, Yuan-Jian-Ping et al. Experiment and analysis of performance parameters for refraction nozzle in vent wash exhaust hood[J]. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(4): 247-250.
李坚,樊林栋,梁文俊,等.烹饪油烟污染及其净化设备现状与发展趋势[J].北京工业大学学报,2004,30(3),342-347.Li Jian,Fan Lindong,Liang Wenjun,et al.Status and development of cleaning equipment on cooking oil fume pollution[J].Journal of Beijing University of Technology,2004,30(3),342-347.(in Chinese)
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)
Wang Xiangyu,Ye Changming,Liu Guangyu,et al.Catalytic disposal of cooking fume discharged from the restaurant[J].Chemical Research in Chinese Universities,2001,17(3):79-80.
Pang S W,Wong A.Challenges on the control of cooking fume emissions from restaurants[J].Hong Kong SAR,2002,12:1-7.
Sourel H l,Faci J M,Playán E.Performance of rotating spray plate sprinklers in indoor experiments[J].J Irrig Drain Eng,2003,129 (5):376-380.
何红勤,袁寿其,张杰,等.运水烟罩内折射式喷头正交试验[J].排灌机械,2009,27(3):181-183,195.He Hongqin,Yuan Shouqi,Zhang Jie,et al.Orthogonal experiment study for refraction nozzle in vent wash exhaust hood[J].Drainage and Irrigation Machinery,2009,27(3),181-183,195.(in Chinese)
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)
Coutinho M A,Toms P P.Characterization of raindrop size distributions at the Vale Formoso Experimental Erosion Center[J].Catena,1995,25:187-197.
Louie M J,Selker J S.Sprinkler head maintenance effects on water application uniformity[J].J Irrig Drai Eng,2000,126(3),142-148.