[특허]Horizontal glassmaking furnace

Horizontal glassmaking furnace 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C03B-005/02
출원번호	US-0650387 (1976-01-19)
발명자 / 주소	Knavish Leonard A. (Plum Borough PA) Cerutti Richard L. (Seminole PA)
출원인 / 주소	PPG Industries, Inc. (Pittsburgh PA 02)
인용정보	피인용 횟수 : 52 인용 특허 : 0

초록 ▼

A horizontal glassmaking furnace adapted for melting glass batch materials by the application of heat to them from overhead flames within the furnace is provided with submerged electric heating electrodes in a region adjacent to where glass batch materials are charged to the furnace and, while overhead flames are reduced or eliminated above the glass batch materials in the vicinity of the electrodes, the glass batch materials are melted from below by action of the electrodes; overhead flames are maintained above exposed molten glass where the glass batch materials have already melted. Discharge of particulate batch materials from the furnace by action of overhead flames is substantially reduced while the thermal efficiency of the furnace is enhanced.

대표청구항 ▼

In a side-fired regenerative glassmaking furnace comprising an enclosed chamber for containing a pool of melted glass and providing a headspace above the molten glass; the chamber having a bottom, side walls, a front wall, a back wall and a roof; further having, in the vicinity of said back wall, means for charging glass batch materials into said furnace; further having, in the vicinity of said front wall, means for discharging molten glass from said furnace; and further having means for supplying heat to at least a portion of said furnace for melting glass batch materials forming molten glass therefrom; said heating means comprising at least five firing ports extending outwardly from each side of the furnace and connected to regenerators; wherein a portion of said furnace is for advancing glass batch materials floating on molten glass in a general direction away from said back wall and toward said front wall while melting said floating glass batch materials, the improvement comprising dampering means substantially blocking each of the first and second ports of the furnace providing a substantially enclosed headspace in the region of the first and second ports isolated from the regenerators of the furnace; submerged electrode means for applying heat to molten glass contained in the furnace only in a region lying between the side walls of the furnace and extending along the length of the furnace from its back wall to a region between its third firing ports and within a bottom portion of the furnace beneath the surface of a pool of molten glass contained therein; and combustion means in firing ports in a downstream region extending between the third firing ports and the front wall and substantially open exhaust means through firing ports in said downstream region for exhausting substantially all exhausted gases from the furnace to the regenerators from said downstream region.

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