Segmented bushing temperature controller and method for using sa

Details Segmented bushing temperature controller and method for using sa Segmented bushing temperature controller and method for using sa

1990-05-30

1991-09-24

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 2, 65 12, 65 29, 65162, 65DIG4, C03B 3707, C03B 3709

Patent

active

050511211

ABSTRACT:
The present invention provides a method of controlling the temperature of a multiple segment fiber glass bushing. Sensors monitor the temperature of each individual segment and the current delivered to the bushing is adjusted so as to maintain the average bushing temperature at a predetermined value. In addition, the temperature of each individual segment is compared to a set point reference value and bushing current is shunted around each segment based on this comparison.

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"Automatic Control Systems", Fourth Edition by Benjamin C. Kuo, published by Prentice-Hall, Inc., p. 471.

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