首先，双变频和双循环属性不一样：
双变频是压缩机和风机双变频，可以提高冰箱运行的稳定性，让冰箱控温更加精准，并且节能降噪。
真正意义的双循环是双蒸发器，又称双制冷系统，冷藏室和冷冻室各有一台蒸发器，双温双控。还有三循环，就是冷藏室、冷冻室、变温室各有一台蒸发器。
排坑：商家会把单循环的循环系统在商品页面描述成双循环、三循环，这个你在看产品介绍是看不出来的，因为它实际上是单循环+双风道或者多风道，只是循环送风。双循环指的是有两个独立的蒸发器，独立工作，三循环那就是在变温区还有一台单独的蒸发器独立工作。这种情况你必须问客服，一般客服会真实告诉你。
但是要注意的是，双制冷循环不能防止各室内部食材串味，防止内部食材串味最好的方法是食材用包装盒或者包装袋分类分区储存。
最重要的一点：双变频和双循环可以同时存在。双变频已经成为冰箱的标配了，各种冰箱形态低中高端都有配置。但是搭载双循环的不多，各个冰箱厂家配置的型号比较少。
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