Heat exchange – With valve or movable deflector for heat exchange fluid flow – With by-pass of heat exchanger or heat exchanger section
Patent
1985-01-14
1987-07-21
Davie, James W.
Heat exchange
With valve or movable deflector for heat exchange fluid flow
With by-pass of heat exchanger or heat exchanger section
165 803, 174 16HS, 357 74, 361381, H01L 2302, F28F 700, H01B 734, H02B 100
Patent
active
046822089
ABSTRACT:
A transistor protection device in accordance with the present invention includes a base platform consisting of a flat aluminum board for fixing a power transistor with small screws or the like. A supporting plate is placed at a prescribed distance from the base platform, and the base platform and the supporting plate are separated by means of solid heat conducting rods and hollow rods through which are inserted conductors. The heat conducting rods are arranged to have their top ends to make contact with the bottom surface of the power transistor which is the portion of maximum heat production in the power transistor, in order to conduct the heat generated to the outside of the power transistor. Because of the better radiation capability which takes place in relatively thin rods, there are installed a plurality of the heat conducting rods. Moreover, on the heat conducting rods, in the section between the base platform and the supporting plate, there are provided numerous radiation fins stacked one after another in order to enhance the radiation capability of the heat conducting rods.
REFERENCES:
patent: 2958021 (1960-10-01), Cornelison et al.
patent: 4535384 (1985-06-01), Wakabayashi et al.
Burry et al, "Multidirectional Expansion Packaging", IBM Technical Disclosure Bulletin, vol. 19, No. 8, Jan. 1977, p. 2960.
Ohashi Toshio
Yamamoto Shukou
Davie James W.
Epps Georgia Y.
Nissan Motor Co,. Ltd.
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