Glass toughening furnace based on net array type heating

Abstract

The invention relates to a net array type heating method for a glass toughening furnace. Both ends of a roller way are rotatably supported between both sides of the furnace body; heating elements above and below the roller way are used to heat processed glass loaded on the roller way; a blast pipe parallel to the roller way is arranged between the upper and / or the lower of the roller way and the heating elements, and the heating elements and the blast pipe are crossed in a net shape; and a high temperature fan compresses hot air to the blast pipe. The invention is characterized in that the refractory steel blast pipe is parallel to the transmitting roller way, and the refractory steel blast pipe and heating wires are perpendicularly arranged to form a net array. The furnace wires carry out radiation heating on the glass and the refractory steel blast pipe adjacent to the furnace wires simultaneously, the fan blows the air heated in the furnace into the refractory steel pipe, the hot air is heated continuously when flowing in the steel pipe and is then blown to the surface of the glass to heat the glass, and the glass plate heating speed is greatly raised under the double effects of radiation heating and convection heating, thereby the processed glass has higher quality.

Description

technical field [0001] The invention relates to a glass heating furnace with a new structure and heating method, in particular to a glass tempering furnace heated by grid array. Background technique [0002] In a traditional glass heating furnace, each heating element is evenly arranged near the upper and lower surfaces of the glass, and the heat is mainly transferred to the surface of the glass by radiation to heat the glass. Radiation heating is the slowest heat transfer method among the three heating methods of conduction, convection and radiation. Under the same heating element temperature, it takes a long heating time to make the glass reach the same temperature. Long heating time will make the glass optical quality is impaired. When the glass to be heated is coated glass, since the side with the film layer has a lower emissivity, it is difficult for heat to pass through the film layer to heat the glass by radiation, and it takes longer for the glass to reach the requi...

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Problems solved by technology

[0003] The invention discloses a grid array heating glass tempering furnace to solve the problems in the prior art that the heating speed is slow, the optical quality of the processed glass is poor, and the film side of the coated glass is difficult to heat.

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