Thermoelectric refrigeration apparatus

Details Thermoelectric refrigeration apparatus Thermoelectric refrigeration apparatus

1989-05-22

1990-08-14

King, Lloyd L.

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

62 37, F25B 2102

Patent

active

049476483

ABSTRACT:
A solid state thermoelectric refrigeration apparatus suitable for cooling various types of optical radiation detectors to desired operating temperatures, without the need for augmented cooling from any supplementary refrigeration apparatus. The refrigeration apparatus contains several thermoelectric cooling arrays of successively smaller size arranged in a generally pyramidal configuration, with a separate thermally-conductive base plate disposed between each adjacent pair of cooling arrays. The cooling arrays each include Peltier cooling elements arranged in a planar configuration. Polished, thermally-conductive, cup-shaped heat shields are attached to the successive base plates and arranged in a nested relationship, with each heat shield and associated base plate enclosing all of the successively smaller shields and base plates. Each base plate is thermally driven by the preceding thermoelectric cooling array, which also cools the associated heat shield. A window is mounted on an outermost shield which is attached to the hot side of the largest thermoelectric cooling array, thus heating the window to prevent moisture condensation.

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