Heat exchange – Regenerator – Checker brick structure
Patent
1991-07-30
1993-05-18
Ford, John K.
Heat exchange
Regenerator
Checker brick structure
165 26, 165 27, 165 30, 165 481, 165 63, 165 64, 62505, F25B 2900, F28F 2700
Patent
active
052117138
ABSTRACT:
A temperature control method for controlling a temperature in a chamber comprises the steps of: providing heating means which can select large and small heating powers for heating the chamber and refrigerating means for cooling the chamber; detecting a process temperature in the chamber; operating the heating means with a small heating power for attaining an intended set value when a detected temperature is equal to or higher than a lower tolerable deviation value, and operating the heating means with a large heating power when the detected temperature is lower than the lower tolerable deviation value; and operating the refrigerating means when the detected temperature is higher than an upper tolerable deviation value.
REFERENCES:
patent: Re31903 (1985-06-01), Faillace
patent: 2801799 (1957-08-01), McColloch
patent: 3229754 (1966-01-01), Hoag
patent: 3637006 (1972-01-01), Decker
patent: 3692100 (1972-09-01), Gallagher, Jr.
patent: 4548259 (1985-10-01), Tezuka et al.
patent: 4784213 (1988-11-01), Eager et al.
patent: 4984628 (1991-01-01), Uchida et al.
"An Application Note" by Control Systems. (No date).
Ford John K.
Tabai Espec Corp.
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