Method of and apparatus for the controlled cooling of a product

Details Method of and apparatus for the controlled cooling of a product Method of and apparatus for the controlled cooling of a product

1982-10-19

1984-10-02

King, Lloyd L.

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

F25B 2102

Patent

active

044740158

ABSTRACT:
For the controlled cooling of specimens which are at least partially of liquid form, especially biological specimens, it is important that crystallization at the freezing point takes place locally, without supercooling, and preferably with absorption of the latent heat of fusion. At a temperature which is a predetermined amount above a given critical temperature for the specimen, e.g. its freezing point, a Peltier effect module is energized to effect supplementary cooling at a local area, for example one end of the specimen. The Peltier effect module and the specimen in its container supported in a sample holder are relatively movable. Preferably, the module is displaced, this being initiated by the insertion and removal of the sample holder, preferably by direct mechanical engagement.

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