Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1972-10-18
1977-01-25
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
174 15C, 200289, H01H 3366
Patent
active
040052974
ABSTRACT:
Vacuum "bottles", or vacuum-type circuit interrupters are provided having heat pipes, or reflux condensers provided in the contacts and contact-stems thereof, to remove the generated heat from the interior of the vacuum-interrupter envelope at the contacts to the external parts of the interrupter, and thereby means of heat-dissipating fins, or other heat-dissipator structures disposed at strategic locations, permit the generated heat to be dissipated to the surrounding atmosphere.
By the use of such heat pipes, or reflux condensers, associated with the contact structures of vacuum interrupters, the current ratings of the vacuum interrupters may thereby be increased, and the attained maximum temperatures are considerably reduced, over the situation which would exist if no heat dissipator were employed.
The heat pipes, or the reflux condensers may be provided interiorly of one or both of the separable contacts, and the generated heat at the contacts may be transmitted to externally-disposed cooling fins, or other cooling heat-dissipating structures.
REFERENCES:
patent: 1720413 (1929-07-01), Greenwood
patent: 2993971 (1961-07-01), Pflanz
patent: 3067279 (1962-12-01), Baker
patent: 3229759 (1966-01-01), Grover
patent: 3261953 (1966-07-01), Tilman et al.
patent: 3440376 (1969-04-01), Rabinowitz
patent: 3603753 (1971-09-01), Frink
patent: 3621108 (1971-11-01), Cleaveland
patent: 3662137 (1972-05-01), Cleaveland
patent: 3668354 (1972-06-01), Meermans
patent: 3764765 (1973-10-01), Olashaw
patent: 3769551 (1973-10-01), Corman et al.
Crout Willard R.
Macon Robert S.
Westinghouse Electric Corporation
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