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Apparatus for heating glass sheets for tempering

A technology for heating equipment and glass plates, which is used in glass manufacturing equipment, glass tempering, manufacturing tools, etc. to achieve consistent heating effects

Inactive Publication Date: 2011-09-21
GLASTON SERVICES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem with equipment of the above type is the anisotropy that develops during the tempering phase
[0008] This can also happen, for example, when heating (due to the distance between adjacent rows of holes) leaves heating streaks on the glass, which become visible during the quenching treatment, or worst of all, which make the quenching Resulting jet stream marks / patterns are more prominent

Method used

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  • Apparatus for heating glass sheets for tempering
  • Apparatus for heating glass sheets for tempering
  • Apparatus for heating glass sheets for tempering

Examples

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Embodiment Construction

[0017] thus, figure 1 with figure 2 An apparatus of the invention for heating a glass sheet to be tempered is shown. The apparatus includes a furnace referenced 1 . The heating furnace 1 has a longitudinal direction and a transverse direction. The furnace is provided with a conveyor 2 comprising, for example, rollers 2 capable of transporting the glass sheet G in the longitudinal direction of the furnace.

[0018] Above the conveyor, preferably at a short distance from the conveyor, such as 2-10 centimeters, preferably about 4 centimeters, a spray box 6 is provided, and the downward side of the spray box, called spray plate 6a, is formed with a The device, in particular the spray holes for blowing heated convective air to the glass sheet G carried on the conveyor.

[0019] In order to circulate the convective air blown onto the glass sheet G, the furnace 1 is provided with means 3-8. This means for circulating the convective air comprises an air duct 3 located above each...

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PUM

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Abstract

The invention relates to an apparatus for heating glass sheets for tempering. The apparatus including a heating furnace having a longitudinal direction and a lateral direction, a conveyor in the furnace for carrying glass sheets in the longitudinal furnace direction, and an arrangement for circulating and heating convection air. The arrangement includes nozzle enclosures provided with jet orifices for blasting heated convection air towards the conveyor. The nozzle enclosures lengthwise of the furnace are disposed at an acute angle relative to the glass traveling direction. The angle is at least 2 degrees, preferably 2-10 degrees, most preferably about 3-5 degrees.

Description

technical field [0001] The invention relates to a heating apparatus for tempered glass sheets, said apparatus comprising: [0002] - with longitudinal and transverse furnaces, [0003] - a conveyor located inside the furnace for conveying the glass sheets in the longitudinal direction of the furnace, [0004] - A device for circulating and heating convective air, said device comprising a spray box provided with spray holes for blowing heated convective air to the conveyor. Background technique [0005] Devices of this type for heating glass sheets to be tempered are known in the prior art, in which air above the glass sheets circulates in the space to be heated. Air is sucked from the furnace roof into the space by means of a fan, after which this air is pressurized and blown further into a spray box arranged above the glass plate. The spray box has exposed resistors through which the air is blown and further through the spray ply to the upper surface of the glass. Befor...

Claims

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Application Information

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IPC IPC(8): C03B27/012
CPCC03B29/08C03B25/12C03B27/044
Inventor K·安东宁K·凯托
Owner GLASTON SERVICES LTD