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【中文摘要】 试验研究退出除霜循环前风机控制方式对空气源热泵机组冬季除霜的影响,基于多次连续的除霜循环和制热循环的测试数据,揭示改变风机控制方式时,翅片温度、出水温度、吸气过热度和过冷度等运行参数以及制热量的变化特点和变化规律,分析退出除霜前风机反转启动控制的优化的时间控制点,当采用这一风机控制方式时,可有效缩短机组除霜时间和制热恢复时间,延长除霜间隔时间和制热衰减时间,提高机组平均制热能力和运行效率,并减小压力和负荷波动,提高机组长期运行可靠性。 【英文摘要】 Experimentally investigates effect of modified fans control methods on the air source heat pump, based on the continuous acquired test data under the operation conditions of defrosting cycle and heating cycle . Analyzes in detail the variance characteristics of fin surface temperature, water temperature, suction superheat and subcooling temperature, heating capacity to optimize the defrosting control methods. The experiment shows that to adopt modified fans control method is useful to reduce defrosting cycle time and heating capacity recovery time, increase defrosting internal time and heating decaying time, increase enhance average heating capacity and coefficient of performance, reduce pressure and load fluctuation and enhance the reliability under heating cycle and defrost cycle operation conditions. 【中文关键词】空气源热泵; 风机; 控制; 除霜恢复时间; 除霜衰减时间; 除霜 【英文关键词】 air source heat pump; fan; control; defrosting recovery time; defrosting decaying time; defrosting