Preventing gas from occupying a spray nozzle used in a process of scoring a hot glass sheet

A method for preventing gas from occupying a spray nozzle used in quenching a sheet of hot glass during a scoring process, comprising:

• removing gas from a quenching liquid to prevent said gas from occupying a spray nozzle;
• spraying a jet of said quenching liquid through a tip orifice of the spray nozzle onto a sheet of hot glass during a scoring process without interruption in said jet to rapidly cool the glass surface and thereby generate a thermal tensile stress sufficient to generate a crack in the glass surface;
• propagating said crack across the glass surface by rapid cooling of the glass surface;
• shutting off said jet of said quenching liquid without a substantial time delay once said scoring process is complete;
• and
• a stand tube that is elevated relative to a main line between a pressurized quenching liquid source and said spray nozzle, said method further comprising flowing bubbles of said gas from said main liquid line into said stand tube and then removing said gas from said stand tube.

A method for preventing gas from occupying a spray nozzle used in quenching a sheet of hot glass during a scoring process, comprising:

• removing gas from a quenching liquid to prevent said gas from occupying a spray nozzle;
• spraying a jet of said quenching liquid through a tip orifice of the spray nozzle onto a sheet of hot glass during a scoring process without interruption in said jet to rapidly cool the glass surface and thereby generate a thermal tensile stress sufficient to generate a crack in the glass surface;
• propagating said crack across the glass surface by rapid cooling of the glass surface;
• shutting off said jet of said quenching liquid without a substantial time delay once said scoring process is complete;
• providing an air filter including an elongated body having opposing ends, hollow porous hydrophobic fibers extending along a length of said body between said ends and being sealed at said ends to expose openings in said fibers at said ends, a fluid inlet at one of said ends and a fluid outlet at another of said ends in fluid communication with said fiber openings, said fluid inlet being in fluid communication with a main supply line from a pressure source of said quenching liquid and said fluid outlet being in fluid communication with said main supply line leading to said nozzle, vacuum ports along the length of said body in communication with an exterior of said fibers, and a vacuum source connected to said vacuum ports,
• passing gas-rich said quenching liquid, from said pressurized source of said quenching liquid into said fluid inlet, and along an interior of said fluid fibers;
• applying a vacuum from said vacuum source pulling gas from said quenching fluid through the pores of said fibers, and removing said gas through said vacuum ports;
• and
• passing gas-depleted said quenching liquid through said fluid outlet, into said main quenching liquid supply line and to said spray nozzle.