公开(公告)号：US5230162A

公开(公告)日：1993-07-27

申请号：US904661

申请日：1992-06-26

申请人： James R. Oyler, Jr.

发明人： James R. Oyler, Jr.

IPC分类号： F26B5/06

CPC分类号： F26B5/065

摘要： In a freeze-drying method, liquid substances to be dried are sprayed into a stream of cold gas, usually air, at ambient pressure creating a collection of small frozen particles that are metered through a vacuum lock into a vacuumized vertical tower having heated walls and, as the particles fall through the vacuum in the tower to its bottom, radiant heat from the tower walls causes the ice contained in the particles to sublime. The resulting sublimed vapor is removed from the tower by low temperature condensation while the dried particles are collected at the bottom and transferred through another vacuum lock into a container. The operation is continuous and fast, providing significant advantages compared to prior known freeze-drying operations.

摘要翻译： 在冷冻干燥方法中，将待干燥的液体物质在环境压力下喷射到冷气体（通常为空气）中，产生通过真空锁定计量的小型冷冻颗粒的集合到具有加热壁的真空垂直塔中， ，当颗粒通过塔中的真空落到其底部时，来自塔壁的辐射热导致颗粒中所含的冰升华。 通过低温冷凝将生成的升华蒸气从塔中除去，而干燥的颗粒在底部收集并通过另一个真空锁转移到容器中。 该操作是连续快速的，与现有已知的冷冻干燥操作相比具有显着的优点。

公开(公告)号：US5208998A

公开(公告)日：1993-05-11

申请号：US770456

申请日：1991-10-03

申请人： James R. Oyler, Jr.

发明人： James R. Oyler, Jr.

IPC分类号： F26B3/12 ,  F26B5/06

CPC分类号： F26B5/065 ,  F26B3/12

摘要： Spray-freeze-drying systems and methods are disclosed for converting a wide variety of liquid substances into dry powder that may be reconstituted into the original substance by addition of water or other liquid that had been removed therefrom. Such systems and methods involve repetitive cycles of four operational steps, i.e., freezing, drying, defrosting and resetting and are characterized by: spraying the liquid substance downwardly in a vessel while surrounding the spray with a downward flow of process gas during the freezing step and by utilizing a heat pump for energy recapture to increase efficiency of operation.

摘要翻译： 公开了喷雾冷冻干燥系统和方法，用于将各种各样的液体物质转化为干粉，其可以通过加入从其中除去的水或其它液体重构成原始物质。 这种系统和方法涉及四个操作步骤的重复循环，即冷冻，干燥，除霜和重新设置，其特征在于：在冷冻步骤期间，将液体物质向下喷射在容器中，同时围绕喷雾器，同时处理气体向下流动; 通过利用热泵进行能量重新捕获以提高操作效率。