Method of and apparatus for production of plate glass
AssigneeKlockner-Humboldt-Deutz Aktiengesellschaft
InventorsDietmar Baron, Rudolf Pelzer, Premek Stepanek
Life of this patent
Estimating the term…
Abstract
A method and apparatus is disclosed for the production of plate glass. A glass melting furnace containing molten glass connects with an outflow furnace in such fashion that central layers of molten glass in the glass melting furnace are conveyed to the outflow furnace. The outflow furnace connects with an outflow nozzle which forms a flat glass band from which the plate glass is cut. The outflow speed of the glass band issuing from the outflow nozzle is regulated by a static pressure adjustment determined by a height of the molten glass in the separate outflow furnace. A supply channel to the nozzle preferably contains heating electrodes for resistance heating of the molten glass prior to issuance from the nozzle.
Claims44
A method for production of plate glass, comprising the steps of:
- melting glass in a continuous glass melting furnace;
- conveying the melted glass to a lower portion of an outflow furnace;
- forming a glass band by free outflow from a lower portion of the outflow furnace through an outflow nozzle connected to the outflow furnace at the lower portion thereof;
- and controlling the free outflow by altering a height of the level of the molten glass in the outflow furnace by controlling glass inflow to the outflow furnace.
A method for production of plate glass comprising the steps of:
- melting glass in a glass melting furnace;
- conveying melted glass from a lower part of the melting furnace to a lower part of an outflow furnace;
- conveying melted glass from a lower part of the outflow furnace through an outflow nozzle to form a flat glass band;
- and regulating outflow speed of the glass out of the nozzle by static pressure before the nozzle.
An apparatus for production of plate glass, comprising:
- (a) a continuous glass melting furnace;
- (b) an outflow furnace;
- (c) a glass outlet channel connecting a lower part of the melting furnace to a lower part of the outflow furnace and control means in the outlet channel for discharging glass into the outflow furnace in a variably controllable manner;
- (d) outflow nozzle means connected to a lower portion of the outflow furnace for forming a flat glass band by free outflow;
- and
- (e) means for regulating the free outflow speed of glass out of the nozzle means by producing static pressure at an inlet to the nozzle means, said means for regulating comprising means for adjusting the height of glass present in the outflow furnace.
An apparatus for the production of plate glass comprising:
- (a) a continuous glass melting furnace;
- (b) an outflow furnace;
- (c) a glass outlet channel connecting a lower part of the melting furnace to a lower part of the outflow furnace for discharging glass into the outflow furnace;
- (d) outflow nozzle means connected to the outflow furnace at a lower portion of the furnace for forming a flat glass band;
- (e) means for regulating outflow speed of glass out of the nozzle means by producing static pressure at an inlet to the nozzle means;
- and
- (f) the nozzle means having means for changing a gap width and a gap breadth of the nozzle means as an outlet opening for the glass.
An apparatus for production of plate glass, comprising:
- (a) a continuous glass melting furnace;
- (b) an outflow furnace;
- (c) means for transferring in a variable controllable manner molten glass in the glass melting furnace to a lower portion of the outflow furnace;
- (d) outflow nozzle means connected to receive molten glass from a lower portion of the outflow furnace;
- and
- (e) means for regulating a free outflow speed of the glass out of the nozzle means independent of free outflow from the nozzle means by flow pressure regulation of molten glass in the outflow furnace, said means for regulating comprising means for adjusting a height of a level of the glass in the outflow furnace.
A method for production of plate glass, comprising the steps of:
- (a) melting glass in a glass melting furnace and conveying it to a lower portion of an outflow furnace;
- (b) forming a flat glass band by free outflow with an outflow nozzle from glass at a lower portion of the outflow furnace;
- (c) regulating outflow speed of melted glass through the outflow nozzle by controlling a flow pressure of glass fed to the nozzle in the outflow furnace separate from the glass melting furnace and by adjusting a height of the level of the glass in the outflow furnace;
- and
- (d) taking glass for the outflow furnace from portions of molten glass in the glass melting furnace spaced from the bottom and top levels of the molten glass in the glass melting furnace, the amount of glass taken from the outflow furnace being selectively controllable so as to control a quantity of glass in the outflow furnace.
Dependencies are inferred from the claim text.