Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1980-08-07
1982-04-27
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 48, 34 54, 34212, 34216, 432 59, 432 72, 118 58, F26B 1302, F26B 2112
Patent
active
043263429
ABSTRACT:
An oven is disclosed as having a plurality of chambers which are sealed from the ambient atmosphere, and to which gas, heated to a high temperature outside the chambers, is circulated to each of the chambers for admixture with gas which is cool compared to the high temperature gas, to produce in the chambers a mixture of hot and cool gas at a predetermined temperature. The hot gas is circulated to the chambers at a certain desired pressure, wherein the cool gas is circulated to the chambers at a certain rate of flow. Gas is exhausted from the oven also at a fixed rate of flow. The gas pressure in the first oven to be encountered by an element passing through the oven, is monitored and triggers a change in the flow of cool gas when the pressure varies from a desired norm. This change in flow of cool gas influences the temperature which is also monitored. A change in the temperature produces a corresponding change in the mixture of hot and cool gas to return the oven temperature to the desired level.
REFERENCES:
patent: 3917444 (1975-11-01), Carthew
patent: 4087923 (1978-05-01), Wilt, Jr. et al.
patent: 4206553 (1980-06-01), Ellison et al.
Hummer Harlan E.
Midland-Ross Corporation
Schwartz Larry I.
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