VERTICAL COUNTER-FLOW IMMERSION FREEZER

摘要

A product is chilled or at least partially frozen by descending against a counter-current flow of liquid nitrogen in a vertical freezer containing an immersion bath of liquid nitrogen.

主权项

1. A method for chilling or at least partially freezing product in an immersion freezer containing a bath of liquid nitrogen, said method comprising the steps of:
depositing the product to be chilled or frozen onto a surface of the liquid nitrogen bath; allowing the deposited product to descend down through the bath against a counter-current flow of liquid nitrogen through the bath to produce chilled or at least partially frozen product; and extracting the chilled or at least partially frozen product from the bath.