Na'urar daskarewa mai sauri{0} na'urar ce ta masana'antu wacce ke rage zafin abinci cikin sauri zuwa ƙasa da daskarewa, yana sa ta wucewa ta mafi girman yankin samar da kristal a cikin ɗan gajeren lokaci, don haka kiyaye ingancin abinci. Ka'idar aikinsa ta farko ta dogara ne akan zafin zafi da canja wurin zafi. Da farko, ana ɗora abincin a kan bel ɗin jigilar kaya kuma yana shiga ƙananan yanayin zafi na injin daskarewa mai sauri-. A cikin injin, tsarin firiji (yawanci amfani da ammonia ko Freon azaman firiji) yana haifar da iska mai sanyi. Wannan iska mai sanyi tana tilastawa fantsama ya zagaya, yana musayar zafi tare da saman abinci kuma yana kawar da zafi cikin sauri.
Yawan zafin jiki na injin daskarewa - yawanci ana sarrafa shi tsakanin -digiri 30 da -digiri 120, ya danganta da nau'in abinci da buƙatun daskarewa. Lokacin daskarewa mai sauri{11} yawanci shine mintuna 10{12}} 25, yana tabbatar da ainihin zafin abincin da sauri ya faɗi ƙasa da digiri 18, yana hana ayyukan ƙananan ƙwayoyin cuta da tsawaita rayuwa. Mahimman abubuwan da ke cikin injin daskarewa mai sauri{14}} sun haɗa da na'urar damfara, evaporator, injin daskarewa, fanka, da tsarin sarrafawa. The evaporator yana ɗaukar zafi daga abinci, injin firiji yana matsawa ƙaramin -zazzabi, ƙaramar gas{16}matsi mai sanyi zuwa wani babban yanayin zafi, iskar gas mai ƙarfi, kuma na'urar na'urar tana sanyaya zafi mai zafi, babban iskar gas zuwa babban ruwa mai matsa lamba, matsa lamba.
