【作者】 司慧萍； 苗香雯； 崔绍荣；

【Author】 Si Huiping,Miao Xiangwen,Cui Shaorong (Institute of Agricultural Bio-Environmental Engineering,Zhejiang University,Hangzhou 310029,China)

【机构】 浙江大学农业生物环境工程研究所；

【摘要】 天窗系统是连栋塑料温室的必要装备之一,它对温室的正常生产及经济效益有重要的影响。为实现现代连栋温室天窗系统开闭与开度的自动化调控,设计了一种快速、安全、可靠、低成本的气动天窗系统以克服目前通用的齿轮齿条系统的弊端,并讨论了气动天窗系统的原理、各级风速下的天窗荷载以及驱动气缸的负载特性,探讨了该系统可行性和特点。与传统技术比较,气动系统完全可以取代机械式开天窗,而且结构简单,操作方便,位置控制精度高,天窗开度和通风面积显著增加,增强了利用自然通风调节温室环境的能力。更多还原

【Abstract】 Ventilation-windows were the main equipment formulti-span plastic greenhouse and itsperformance directly influencing the economic effect of greenhouse.The open,close,exact opening-angle of the ventilation windows was becoming increasingly important problems,because of the higher requirements of climate control in modern greenhouses Adopting speediness,sureness,credibility,low cost pneumatics to design the operation of ventilation-windows was a reasonable solving method.The objective of the study wasmainly to design a pneumatic operation system for ventilation-windows for multi-span plastic greenhouse.Mechanical effects were assessed, its cylinder load was calculated and a related model has been done.Compared the new self-developed system with the traditional gear-rack operation system for theirmechanical characteristics,their operation,the control of windows opening,the windows-ventilation angle showed that the new system ismore convenient,easy to use;easy to bcate,the aperture angle is larger than that of the gear-rack operation system.The ventilation area wasmuch increased and environmental conditions through ventilation were notably improved.更多还原