Batteries: thermoelectric and photoelectric – Thermoelectric – Having housing – mounting or support
Patent
1974-06-03
1976-05-04
Tubbesing, T. H.
Batteries: thermoelectric and photoelectric
Thermoelectric
Having housing, mounting or support
29573, 73DIG9, 136201, 136234, 136236A, 136237, H01L 3510
Patent
active
039545075
ABSTRACT:
This invention relates to thermocouple hot junction members which are used in immersion thermocouple assemblies employed for measuring the temperature of molten metal. At the temperatures involved, which are over 1200.degree.C and often in the region of 1800.degree.C and more, noble metals and alloys thereof have to be used to form a thermocouple conductor pair and up to now these have been united at the hot junction by a spot weld.
In the hot junction of this invention the weld is replaced by a conductive refractory powder bridge so that the thermocouple conductor elements do not have to be joined. Each thermocouple conductor element is located in a leg of a quartz glass U-tube and the refractory powder bridge is located in the base of the U-tube so that opposed ends of the conductor elements are embedded in the powder which forms a thermocouple junction.
Advantages which flow from the invention includes a simpler manner of construction of the hot junction member and also greater freedom of choice of the metals forming the thermocouple pair.
REFERENCES:
patent: 1259372 (1918-03-01), Davey
patent: 3069752 (1962-12-01), Shgrning
patent: 3154501 (1964-10-01), Hertz
patent: 3392439 (1968-07-01), Sonnenschein
patent: 3477122 (1969-11-01), Hamrick
patent: 3785947 (1974-01-01), Baldwin et al.
patent: 3816183 (1974-06-01), Kraus
Berger Richard E.
Tubbesing T. H.
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