【作者】 崔培培； 魏邦福； 陈开松； 党超镔； 李敏霞；

【Author】 Cui Peipei;Wei Bangfu;Chen Kaisong;Dang Chaobin;Li Mingxia;Changhong Meiling Co.Ltd.;Fukui University;Tian Jin University;

【机构】 长虹美菱股份有限公司； 福井大学； 天津大学；

【摘要】 冰箱制冷过程中存在"呼吸效应",箱内外气体会随"呼吸效应"经门封等处产生传质渗透。本文利用示踪气体法原理,建立风冷冰箱传质实验测试系统,分析了风冷冰箱风机启停、风门启闭、风机转速变化和排水管状态等变化情况下,冰箱传质变化量和变化规律。结果表明:(1)风机启动可建立箱内外压差驱动势,风机转速降低,室内外压差势降低,驱动其渗透的推动力减小,传质渗透量降低。风机转速由1880rpm下降至1320rpm,其传质渗透量降低44.8%;(2)排水口和风门状态会改变风循环路径,从而改变冰箱经门封的传质渗透方向。化霜排水口封闭后总传质渗透量降低9.8%,风门关闭传质渗透量降低63.5%以上;(3)经冰箱性能验证,封闭排水口降低整机渗透热负荷,从而降低耗电量,达到节能减排的效果。更多还原

【Abstract】 There is a "breathing effect" in the refrigerating operation of a refrigerator,and the air between the inside and outside of the refrigerator will exchange heat and mass with the "breathing effect".The tracer gas method was used in the experiment,and an experimental system was set up to research the mass transfer through frost-free refrigerators.The quantity and mechanics of mass transfer of single-cycle frost-free refrigerators are analyzed.The results show that:(1)The pressure differential driving potential can be established when the fan is started.The speed of the fan is reduced,the pressure differential potential between indoors and outdoors is reduced,the driving force driving the penetration is reduced,and the mass transfer permeability is reduced.The fan speed is reduced from 1880rpm to 1320rpm,and the mass transfer permeability is reduced by 44.8%.(2)drain and throttle state will change the fridge wind circulation path to change the direction of mass transfer infiltration.After the defrosting drain is closed,the total mass transfer permeability decreases by 9.8%,and the mass transfer permeability decreases by more than 63.5% when the damper is closed.(3)After the performance verification of the refrigerator,the closed drain reduces the osmotic heat load of the whole machine,thus reducing power consumption and achieving the effect of energy saving and emission reduction.更多还原