Controllable heat transfer device

Details Controllable heat transfer device Controllable heat transfer device

1980-05-22

1983-06-14

Davis, Jr., Albert W.

Heat exchange

Regenerator

Checker brick structure

165 96, 16510427, 165 47, 425547, 425548, 425552, F28D 1500

Patent

active

043877621

ABSTRACT:
A novel method and device for precision injection molding is disclosed providing controlled cooling of a portion of the mold cavity surface during the molding cycle, or several such portions independently, and also, in the preferred embodiment controlled heating of a portion of the mold cavity surface during the molding cycle or several such portions independently, whereby high quality, high precision parts having close dimensional tolerances may be produced. Another aspect of the invention, a volume-controlled variable conductance heat pipe is disclosed, which novel heat pipe comprises housing means forming a sealed chamber, fluid, such as water or ammonia, within the chamber, wicking means and control means for controling the thermal conductance of the heat pipe comprising means for controlling the volume of fluid in the liquid phase in the chamber. Preferably, the novel injection mold comprises a thin mold face supported at least in part by a foundation means which either incorporates, or is itself, a novel volume controlled variable conductance heat pipe as disclosed.

REFERENCES:
patent: 3502138 (1970-03-01), Shlosinger
patent: 3517730 (1970-06-01), Wyatt
patent: 3621906 (1971-11-01), Leffert
patent: 3702533 (1972-11-01), Dirne et al.
patent: 3776304 (1973-12-01), Auerbach

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