Method for performing a frit firing cycle in the manufacturing of a vacuum solar thermal panel
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United States of America Patent
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Jan 17, 2017
Grant Date -
Nov 27, 2014
app pub date -
Dec 15, 2011
filing date -
Dec 28, 2010
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Abstract
The present application relates to a method for manufacturing a vacuum solar thermal panel which comprises at least a tempered glass plate and a metal frame attached to said plate, the method comprising a frit firing cycle to form a glass-metal seal, the frit firing cycle comprising a first heating phase of the tempered glass plate up to a maximum temperature (Tm), being the temperature which preserves a suitable pre-stress level of the tempered glass plate. Advantageously according to the invention, the method further comprises a second heating phase (via optical radiation illumination) being a selective heating phase of a melting area of the tempered glass plate performed at a second temperature (Th) which is above the maximum temperature (Tm).
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