Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control
Patent
1986-02-10
1987-07-14
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Temperature control
16510421, 425 29, 425526, 425552, 425407, B29C 3304
Patent
active
046800018
ABSTRACT:
A mold for molding articles of plastic or other like materials, having a plurality of vertically extending internal passages, is connected by inlet and return conduits into a closed loop that includes a heat exchanger partially filled with a liquid supply of a cooling fluid or a heating fluid. For cooling the heat exchanger is positioned with its liquid level above the top of the mold, the inlet conduit connects the lower part of the heat exchanger, below the liquid level, to the lower ends of the mold passages, and the return conduit connects the upper ends of the mold passages to the upper part of the heat exchanger; for heating these relationships are reversed. In operation the fluid changes its physical state at critical points in the mold passages, going from liquid to vapor for cooling and from vapor to liquid for heating; circulation in the closed loop is in response to the effect of gravity. Operation of the heat exchanger is controlled to maintain a controlled pressure in the closed loop.
REFERENCES:
patent: 2363118 (1944-11-01), Chamberlain
patent: 3259175 (1966-07-01), Kraus et al.
patent: 3836779 (1974-09-01), Bruno et al.
patent: 3855449 (1974-12-01), Schneider
patent: 4072181 (1978-02-01), Kostura et al.
patent: 4314601 (1982-02-01), Giuffre et al.
Perry's Chemical Engineers' Handbook, McGraw--Hill Book Co., NY, NY, 4th ed., pp. 4-55.
Application Engineering Corporation
Housel James C.
Woo Jay H.
LandOfFree
Passive mold cooling and heating system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Passive mold cooling and heating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive mold cooling and heating system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1425981