直冷电冰箱制冷循环分析

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1、直冷电冰箱制冷循环分析*段焕林陈爱东苗翠平（河南纺织高等专科学校郑州450007）张凤林（河南新飞电器有限公司新乡453000）摘要：分析了直冷电冰箱单路、双路、多路循环及双机、双级制冷循环，进行了系统匹配性、市场占有率、成本及其cop值比较。针对双路循环存在的濒繁开停机现象，提出了完善控制方式及采用双稳态电磁阀的变温技术。变温室蒸发器与冷冻室蒸发器串联，其前串联双稳态电磁阀2，并在变温室蒸发器上并联双稳态电磁阀1，据变温室温度设定改变双稳态电磁阀通断实现两个循环支路交替制冷。冷藏室温度控制压缩机启停，变温室温度仅控制双稳态电磁阀通断，实现切换制冷剂流向目的。

2、应用该循环方式及相关措施研制的BCD-188CH直冷电冰箱最大负荷日耗电0.38度，变温情况下耗电在0.35度以下，最低达0.31度。关键词：制冷循环；理论分析；电冰箱；变温技术AnalyzingonRefrigerationCycleandSavingEnergyofdirect-coolingrefrigeratorRefrigeratorLiGang☆,ZhengFenglinandWangYinghui☆HenanTextileCollege,ChinaAbstract:Thispapercontrastedthesinglepath,doublepa

3、th,multi-pathandthetwo-compressoranddouble-stagecompressorrefrigerationcycle.Analyzingoncost,matchingproperty,prospectofmarketandCoefficientofPerformance(COP)wascompleted.Inregardtothephenomenonoffrequentcompressor’son-offondoublepathrefrigerationthepaperfindedoutthesolvingmethodswh

4、ichincludedtheperfectingthecontrolwayandusingthevariabletemperaturetechnologyofelectro-magneticvalvewithdoublesteadystate.Evaporatorinvariabletemperatureareacontactedevaporatorinfreezingchamberandelectro-magneticvalveⅡwithdoublesteadystatewhiletheelectro-magneticvalveⅠwasparallelcon

5、nectionwithevaporatorinvariabletemperaturearea.Bydesigningthetemperatureofvariabletemperatureareatheelectro-magneticvalvewithdoublesteadystatewasonoroffsothatthetwocycleoperatedalternatelyTemperatureofcoldstoragechambercontroledtheopeningandshuttingofcompressorandtemperatureofvariab

6、letemperaturechamberonlycontroledtheon-offofelectro-magneticvalvewithdoublesteadystatewhilethedirectionofrefrigerantflowingwascontrolledbyusingthiscyclewayBCD-188CHdirectcoolingrefrigeratorwasmunufactured.Itconsumes0.38KWhelectric-energydailyunderthemaximumload.Itconsumeslessthan0.3

7、5KWhevenattaining0.31KWhdailyifvariabletemperaturechamberisoperatingundereconomycondition.Keyword:Refrigerationcycle,theoreticalanalysis,refrigerator,variabletemperaturetechnology-8-1、前言随着科学技术进步及人们生活水平的提高，电冰箱已成为不可缺少的生活必需品。世界电冰箱产量约80×106台/年，其中APEC国家达45×106台/年[1]。进10年来，我国电冰箱产量呈迅猛增长之势，

8、年均增长11.1%[2]，其耗电量占民