SU1063793A1 - Sun protection enclosure - Google Patents

Abstract

SUN-PROTECTION FENCING from sheet photochromic alumino-bore silicate glass, distinguished by the fact that, in order to reduce the cost, it is made of multilayer, and the plane-parallel layers of photochromic aluminum-silicate glass with thickness k -

Description

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The invention relates to translucent enclosing structures with varying translucency in the visible region of the spectrum depending on the intensity of illumination, namely, sun windows, and can be used in construction.

A single-layer sun-protection of aluminosilicate photochromic glass, which has a reversible light transmission, is known: it rapidly darkens under the influence of irradiation, and after its irradiation has ceased, it completely restores its transparency 1.

The disadvantage of the known glass is the high cost due to the high silver content (up to 1.0%).

The purpose of the invention is to reduce the cost.

The goal is achieved by the fact that the sun barrier made of sheet photochromic aluminoborosilicate glass is made of multilayer, and the plane-parallel layers of photochromic aluminoborosilicate glass of just K (0.10, 3) 6 are placed between layers of aluminosilicate glass at an angle of 30 to 45 grams to the last m grains at a distance h (1-2) 6 from each other, - where And is the thickness of the fence.

Fig. 1 shows a glass with the location of the photochromic layers in it, a section; Fig 2 is the same in terms of; in fig. 3 is a schematic of the device for obtaining the proposed guard (section A-A in FIG. 4); FIG. 4 shows a section BB in FIG. 3

Fence 1 (Figs. 1 and 2) contains photochromic layers 2 located between faces 3 and 4 at an angle

(30-45 to them. The distance between the layers is h (1-2) 6, and the thickness of the layer is K (0.1-0.3) 6, where B is the thickness of the glass.

The composition of the photochromic glass, wt.%: SiOn 40-42; 2.0-1, 15-16,5, NagO 5-18; AlyO 28-38, Ag 0.2-0.8; F 1.2-2.5; Cl 0.7-1.5; Br 0.3-1.0; Cug. 0.01-0.05.

The composition of the interlayer space is similar to that of transparent sodium alum-borosilicate glass, wt.%: SiOe 40-42 ,. BjO-, 15-16,5 ,. 5-18 / McAf. 28-.38.

The fence will work as follows:

On the matinee and evening hours, as well as on cloudy and winter days, when the intensity of solar irradiation S glass is low, the glass is colorless and transparent, layers are not visible. When the intensity of solar irradiation increases, the layers become visible, darken, begin to reflect, and Chs1 permanently absorb the sun's rays. Layers begin to work like blinds. The higher the solar radiation flux density, the darker the st. Layers become, their absorptive and recoverable abilities increase and, as. the consequence of this is that they retain more sunlight.

. One of the possible technological processes for the manufacture of glass can be carried out in a plant (Figs. 3 and 4) in which transparent sodium alumino borosilicate and photochromic sodium alumino borosilicate glasses are separately separated in bath furnaces, then combined in a working boat and drawn out as; tapes.

In a furnace furnace 5, sodium alumino-borosilicate glass is cooked in a known manner using a glass melting temperature of 1300-1500 ° C.

In the bathroom of the furnace, photochromic sodium alum-borosilicate glass is used in a known manner. Glass melting temperature 1300-1500 ° C.

The production boat 7 is immersed in the glass melt located in the bath furnace. The photo glass from the furnace 6 through pipeline 8 under a small pressure enters the distribution manifold 9, and then through the spinnerers 10 E, is led to the anti-alumi- num-screening silicate glass.

The working holes of the 11 nozzles located at the exit of the working boat are exactly the same as the repetition. The geometry of the photochromic layers in the glass. Through the orifices of the spinnerets, the photochromic glass is introduced into the sodium aluminosilicate silicate glass and together with it; vertically drawn out in the form of a ribbon 12.

The organization of such a production process does not require additional expensive equipment and is similar to the production process for producing colored glass.

Specific examples explaining the invention are shown in the table.

When comparing the sun protection properties of the proposed fence and the prototype, when the density of solar radiation varies in the range of 80530 W / m, it is established that the light transmission coefficient of the proposed fence does not substantially differ from the known one, which indicates that the sun protection characteristics remain.

The technical and economic effect of the use of the invention is to reduce silver consumption by 5075% while maintaining the sun protection

effect. Another advantage of the image. retention is an increase in light transmission of 40-60% in the absence of solar irradiation. Besides,

the production of such a fence does not require additional equipment and is similar to the production process of obtaining colored glass.

The thickness of the fence 6 mm

The angle of the layer to the edges of the sheet glass. (, hail

Distance between layers h (1-2) V, mm

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The thickness of the layer To (0,1-0,3) 8,

Light transmission coefficient at solar radiation density S 500 W / m

reduction in the cost of fencing compared to the prototype,%

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Claims (1)

SOLAR PROTECTION made of sheet photochromic aluminoborsilicate glass, characterized in that, in order to reduce the cost, it is laminated, and plane-parallel layers of photochromic alumino-borosilicate glass with a thickness of k - (0.10.3) B are placed between the layers of aluminosilicate glass at an angle = 30-45 °, to the faces of the latter at a distance h = (1-2) E from each other, where 8 is the thickness of the fence. CPut.f