| 摘要 |
A liquid, preferably cream, is frozen to produce solid pellets that can be stored, ready for consumption, in a refrigerator or freezer. Drops of cream are dispensed from a dispenser 2 and collected in a reservoir 4 of liquid nitrogen. The drops freeze to form buoyant solid pellets of frozen cream. The buoyant pellets are carried by liquid nitrogen flowing under gravity from the reservoir 4 through a passage 6 into a separator 8 in which the pellets are separated from the liquid nitrogen, the pellets being received in the separator 8 while still buoyant. Liquid nitrogen separated from the pellets is passed into a sump 10, from which it is returned by a pump 12 to the reservoir 4. Eggs, cheese, yoghurt or blood may also be frozen. <IMAGE> |
