IT1168873B - Electronic boosting control for a glass forehearth - Google Patents
Electronic boosting control for a glass forehearthInfo
- Publication number
- IT1168873B IT1168873B IT48280/83A IT4828083A IT1168873B IT 1168873 B IT1168873 B IT 1168873B IT 48280/83 A IT48280/83 A IT 48280/83A IT 4828083 A IT4828083 A IT 4828083A IT 1168873 B IT1168873 B IT 1168873B
- Authority
- IT
- Italy
- Prior art keywords
- forehearth
- temp
- electrodes
- adjacent
- sidewalls
- Prior art date
Links
- 239000011521 glass Substances 0.000 title abstract 3
- 230000003750 conditioning effect Effects 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000006060 molten glass Substances 0.000 abstract 1
Abstract
Appts. for heating molten glass flowing through the conditioning section of a forehearth comprises (a) several pairs of electrodes extending through the sidewalls of the forehearth with their ends terminating adjacent the sidewalls; (b) a circuit connected to the electrodes to provide Joule effect heating of the glass adjacent to the hearth sidewalls, and a source of current and a current controller; (c) two temperature sensors, one positioned in the forehearth at its centre line, adjacent to the end of the conditioning centre, including a thermocouple immersed in the glass; one extending into the forehearth adjacent its sidewall in alignment with the first sensor; (d) a settable override circuit connected to the circuit supply appts. and appts. connecting the override circuit with the second temp. sensor for adjusting the current to the electrodes so as to provide a selected sidewall temp. A system is provided in which a set current level selected by operator can be applied to electrodes positioned in the conditioning section of the furnace so that the sidewall temp. can be brought into agreement with the centre line temp. providing optimum conditioning.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT48280/83A IT1168873B (en) | 1983-05-12 | 1983-05-12 | Electronic boosting control for a glass forehearth |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT48280/83A IT1168873B (en) | 1983-05-12 | 1983-05-12 | Electronic boosting control for a glass forehearth |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8348280A0 IT8348280A0 (en) | 1983-05-12 |
IT1168873B true IT1168873B (en) | 1987-05-20 |
Family
ID=11265655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT48280/83A IT1168873B (en) | 1983-05-12 | 1983-05-12 | Electronic boosting control for a glass forehearth |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1168873B (en) |
-
1983
- 1983-05-12 IT IT48280/83A patent/IT1168873B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8348280A0 (en) | 1983-05-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970530 |