Temperature stabilization method

Details Temperature stabilization method Temperature stabilization method

1978-11-15

1981-01-20

King, Lloyd L.

Refrigeration

Processes

Condensing and evaporating

62 3, 62467R, 62514R, F25D 1500, F25B 2102, F25B 1900

Patent

active

042454794

ABSTRACT:
A radiation detector assembly is enclosed in a heat pipe which is positioned in a dewar flask. A thermo-electric cooler is joined to one end of the heat pipe. The heat exhaust of the thermo-electric cooler is communicated to a heat dissipation device in the form of a fin assembly. A thermistor senses the temperature at the heat pipe. When the thermistor indicates a temperature in excess of that corresponding to a reference signal, a control signal is produced by a control device to cause a power source to operate the thermo-electric cooler to remove heat from the heat pipe to the fin assembly. The vacuum within the dewar flask effectively limits the environmental heat passing to the heat pipe to radiant heat. The detector assembly and temperature stabilization system may extend to the interior of a conduit or other housing containing material whose radiation is to be detected, while the fin assembly is exposed to the atmosphere. In particular, the temperature stabilization system may be used in conjunction with a detector comprising a scintillation crystal optically coupled to a photomultiplier tube in an environment which would otherwise diminish the performance of such a detector by raising its temperature.

REFERENCES:
patent: 3230773 (1966-01-01), Matthews
patent: 3289422 (1966-12-01), Fisher
patent: 3422886 (1969-01-01), Buller
patent: 3451641 (1969-06-01), Leventhal
patent: 3973938 (1976-08-01), Szabo et al.
patent: 4030316 (1977-06-01), Aronson
patent: 4121434 (1978-10-01), Annable

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