Glazing with variable absorptivity

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 3/66 (2006.01) A01G 9/14 (2006.01) E06B 3/67 (2006.01)

Patent

CA 2341585

The invention concerns glazing sheets (1) with variable absorbing power. Said glazing (1) comprises two transparent walls (2, 3) providing an inter-wall space (4) containing one of the two following fluids: either a first transparent fluid, such as air; or a second transparent fluid (5), absorbing solar energy over a very large part of the spectrum, in particular liquid water or liquid water with added alcohol. The glazing further comprises a circuit for discharging energy in the form of a bead, located at its periphery, preferably consisting of a heat pipe-exchanger. The glazing (1) also comprises means for filling up or emptying the inter-wall space (4), as well as flexible elements (7, 8) for absorbing the second fluid (5) expansion depending on temperature. The glazing can in particular be used for producing car windows.

La présente invention concerne les vitrages (1) à pouvoir absorbant variable. Le vitrage (1) comprend deux parois (2, 3) transparentes ménageant un espace interparoi (4) contenant l'un des deux fluides suivans, soit un premier fluide transparent, tel que l'air, soit un second fluide transparent (5), absorbant l'énergie solaire sur une très grande partie du spectre, notamment de l'eau à l'état liquide ou de l'eau à l'état liquide additionnée d'alcool. Le vitrage comprend en outre un circuit d'évacuation d'énergie en forme de bourrelet, situé à sa périphérie, de préférence constitué par un échangeur caloduc. Le vitrage (1) comporte également des moyens de remplissage ou de vidange de l'espace interparoi (4), ainsi que des éléments souples (7, 8) pour absorber les dilatations du second fluide (5) en fonction de la température. Le vitrage peut notamment être employé pour la réalisation des fenêtres d'un véhicule.

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