浅析单系统风冷冰箱化霜控制系统优化设计  

Analysis on the Optimal Design of Defrosting Control System of Single System Frost-free Refrigerator

作　　者：肖剑 王文娟 高平 牛再山 宋玉荣 李芳 

机构地区：[1]安徽康佳同创电器有限公司,滁州239000

出　　处：《日用电器》2022年第2期74-78,共5页ELECTRICAL APPLIANCES

摘　　要：本文通过对单系统风冷冰箱化霜过程进行试验,对箱内各处温度的变化对实际化霜效率进行了理论计算,得出现方案在排水阶段,由于加热器功率过大,其产生的热量很大一部分用来与箱内空气进行热量交换,导致箱内温度升高和能耗增大。故提出采用两段式变功率的形式对蒸发器的霜层进行化霜,并通过试验进一步验证了两段式变功率化霜的实际效果和化霜规律。总的来说,通过对冷藏回风道的结构优化和采用两段式变功率的化霜控制策略,可以提高此款风冷冰箱的蒸发器化霜能力,同时也为其他产品及新品项目提供了相关的解决方案。The defrosting process of single-system Frost-free refrigerator is tested in this paper.The effect of temperature variation on frosting efficiency was theoretically calculated.In the drainage stage,because the heater power is too large,a large part of the heat generated by it is used for heat exchange with the air in the box,leading to the temperature rise in the box and the increase of energy consumption.Therefore,a two-stage variable power method is proposed to defrost the evaporator.The practical effect and defrosting rule of two-stage defrosting with variable power are further verified by experiments.By optimizing the structure of refrigerated air return duct and adopting the defrosting control strategy of two-stage variable power.It can improve the evaporator defrosting ability of Frost-free refrigerator.Meanwhile,we also provide relevant solutions for other products and new product projects.

关 键 词：化霜控制 化霜切入点 化霜退出点 分段式化霜 

分 类 号：TM925.21[电气工程—电力电子与电力传动]