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速凍冷庫主要用于食物、藥品、藥材、化工原料等物品的低溫冷凍。速凍冷庫又分為庫房式和隧道式，庫房式的適合較大的物料進行速凍，如整羊和二分豬胴體的速凍庫等；隧道式速凍庫又叫速凍隧道，用于小件食物疾速凍住，如速凍水餃和速凍魚蝦等。
The freezer is mainly used for cryopreservation of food, medicine, medicinal materials, chemical materials and other materials. Quick-frozen cold storage is also divided into storehouse and tunnel type, storehouse type, which is suitable for quick freezing of larger materials, such as whole sheep and quick freezing storehouse of two points pig carcass. Tunnel quick freezing storehouse is also called quick-frozen tunnel, which is used for quick freezing of small food, such as quick frozen dumpling and quick frozen fish and shrimp.

速凍冷庫所采用的一般都是專用的低溫制冷壓縮機機，特殊情況下還需要使用單機雙級壓縮機，蒸發器也是采用的速凍專用冷風機，具有風力大，翅片間距寬的特點。

Commonly used cryogenic refrigerators are special cryogenic refrigeration compressors. Under special circumstances, they need to use single stage two stage compressor. Evaporator is also used for special purpose cooling fan, which has the characteristics of large wind force and wide fin spacing.
1、食物在凍住進程中會發作各式各樣的變化，如物理改變(體積、導熱性、比熱、干耗改變等)、化學改變(蛋白質變性、色變等)、細胞組織改變以及生物和微生物的變化等。
1, food will undergo various changes during the freezing process, such as physical changes (volume, thermal conductivity, specific heat, dry consumption changes, etc.), chemical changes (protein denaturation, color change, etc.), changes in cellular tissues, and changes in organisms and microorganisms.
2、大多數食物在溫度降低到-1℃時開始凍結，在-1℃～-5℃之間大多數冰晶生成，這個期間叫做最高冰結晶生成期間。速凍冷庫疾速凍住可以使此期間的凍住時刻大大縮短，可以以最快速度掃除這些熱量，這對進步速凍食物的質量具有重要意義。
2, most of the foods begin to freeze at temperatures below -1 C, and most ice crystals form at -1 to -5 degrees. This period is called the highest ice crystallization period. Quick freezing of quick freezing cold storage can greatly shorten the freezing time during this period and speed up the removal of these calories with the fastest speed, which is of great significance for improving the quality of frozen foods.
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