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Apparatus for direct resistance heating of platinum-containing vessels

A kind of equipment and container technology, which is applied in the equipment for forming glass sheets, direct resistance heating, equipment for transferring molten materials, uniform current density, and can solve problems such as material failure

Active Publication Date: 2017-05-31
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These hot spots can lead to premature material failure, for example by thermal oxidation involving or reaching the melting point of the metal

Method used

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  • Apparatus for direct resistance heating of platinum-containing vessels
  • Apparatus for direct resistance heating of platinum-containing vessels
  • Apparatus for direct resistance heating of platinum-containing vessels

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Embodiment Construction

[0033] In the following detailed description, for the purpose of illustration and not limitation, exemplary embodiments are given to illustrate specific details to provide a sufficient understanding of the present invention. However, it is obvious to a person of ordinary skill in the art that after benefiting from this description, the present invention can be implemented in other embodiments different from the specific details described herein. In addition, descriptions of well-known devices, methods, and materials will be omitted herein to avoid interference with the description of the present invention. Finally, wherever applicable, the same reference signs refer to the same elements.

[0034] The term "noble metal" as used herein and in the claims means platinum group metals or alloys thereof. Of particular interest include platinum, particle-stabilized platinum, platinum alloys, or particle-stabilized platinum alloys, but there are no restrictions on other platinum group me...

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Abstract

An apparatus for controlling the temperature in an elliptical molten glass carrying vessel (eg, a pipe used to transport molten glass from one location to another) by passing an electric current through the vessel. The apparatus includes a metal flange comprising a plurality of conductive rings including an inner ring engaged with an outer wall of the container and an outer ring surrounding the inner ring. For example, the inner ring may include a substantially elliptical outer perimeter. In some embodiments, the inner ring contains notches that help make the current density more uniform. In some embodiments, the width of the inner ring (excluding the notch) does not vary appreciably with angular position relative to the container.

Description

[0001] This application claims priority from U.S. Patent Application No. 13 / 546461 filed on July 11, 2012, which is incorporated herein by reference in its entirety. [0002] field [0003] The present invention relates to glass manufacturing, and in particular, to direct resistance heating of platinum-containing containers (for example, containers such as melters, clarification furnaces, stirring chambers, shapers, and connecting pipes) used to contain or transport molten glass . [0004] Background of the invention [0005] The basic steps for manufacturing sheet glass, such as sheet glass used as a substrate for electronic displays (for example, liquid crystal displays (LCD)), include: (1) melting the raw materials; (2) clarifying (refining) the melt ) To remove gaseous inclusions; (3) stir the clarified molten glass to achieve chemical and thermal uniformity; (4) thermally adjust the uniform glass to reduce its temperature and increase its viscosity; (5) Shaping the cooled molten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B5/185C03B7/02C03B7/06
CPCC03B5/23C03B5/1675C03B7/06H05B3/0004C03B5/005C03B11/14C03B19/02C03B19/1035C03B7/098H05B1/00
Inventor G·德 安格利斯M·格雷梅J·C·伊莎查J·P·墨菲
Owner CORNING INC