Refrigeration – Using electrical or magnetic effect – Thermoelectric; e.g. – peltier effect
Patent
1978-01-19
1980-04-29
King, Lloyd L.
Refrigeration
Using electrical or magnetic effect
Thermoelectric; e.g., peltier effect
62467R, 62514R, F25B 2102, F25B 1900
Patent
active
041999533
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 singal 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
Peelman Harold E.
Richter, Jr. Albert P.
Cone Gregory A.
King Lloyd L.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
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