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    Food refrigeration system and method incorporating a cryogenic heat transfer apparatus and method
    1.
    发明授权
    Food refrigeration system and method incorporating a cryogenic heat transfer apparatus and method 失效
    包含低温传热装置和方法的食品制冷系统和方法

    公开(公告)号：US5218826A

    公开(公告)日：1993-06-15

    申请号：US918903

    申请日：1992-07-22

    申请人： Mark J. Kirschner ,  William Kulik ,  Rustam Sethna ,  Ron C. Lee

    发明人： Mark J. Kirschner ,  William Kulik ,  Rustam Sethna ,  Ron C. Lee

    IPC分类号： A23L3/36 ,  A23L3/375 ,  F25D9/00

    CPC分类号： F25D9/00 ,  A23L3/361 ,  A23L3/375

    摘要： The present invention provides a food processing system and method for refrigerating articles of food. The food processing system includes at least two cooling stages formed by a cryogenic freezer and a hydrocooler. The cryogenic freezer receives the articles of food and transfers heat from the articles of food to the cryogen so that the articles of food are refrigerated. After the transfer of heat from the articles of food to the cryogen, the cryogen boils off to form cryogenic vapor. The hydrocooler receives the articles of food prior to the cryogenic freezer and transfers heat from the articles of food to supplied cooling water. Such heat transfer reduces the quantity of cryogen required to refrigerate the articles of food. Additionally, an eductor is connected to a pump and to vent line from the cryogenic freezer. The cooling water is pumped through the eductor to suction cryogenic vapor from the cryogenic freezer and to mix the cryogenic vapor and the cooling water prior to reception of the cooling water in the hydrocooler. Such mixing transfers heat from the cooling water to the cryogenic vapor to increase the heat transfer between the articles and the cooling water in the hydrocooler. As a result of such increased heat transfer, the amount of cryogen required in refrigerating the articles is further reduced The eductor and pump combination has general application to the cooling of articles.

    摘要翻译： 本发明提供了一种用于冷冻食品的食品加工系统和方法。 食品加工系统包括由低温冷冻器和冷却器形成的至少两个冷却段。 低温冷冻器接收食品，并将热量从食物物质传递到冷冻剂，以使食品冷藏。 在将食物从制品转移到冷冻剂之后，冷冻剂沸腾，形成低温蒸气。 冷冻器在低温冷冻机之前接收食物，并将热量从食物物质传送到供应的冷却水。 这种热传递减少了冷藏食品的所需的冷冻剂量。 此外，喷射器连接到泵并从低温冷冻器排出管线。 将冷却水通过喷射器泵送到来自低温冷冻器的低温蒸汽，并在冷却器中接收到冷却水之前混合低温蒸气和冷却水。 这种混合将热量从冷却水转移到低温蒸汽，以增加物品与冷却器中的冷却水之间的热传递。 由于这种增加的热传递的结果，制冷物品所需的制冷剂的量进一步减少。喷射器和泵组合一般适用于物品的冷却。