DE2263353B2 - Double or multi-pane insulating glass with increased thermal insulation, in which a transparent pane element made of plastic is arranged between at least two panes - Google Patents

Description

, stratified state
is often permeable

is what fa, unb, -longwave Infrared ray

^ Two branches.ben-

^ _{teUt> the one} or two heat reflective layers made of tin or indium oxide

animal covering is a metal covering

the DT-Gbm 16 95 387 should be one of the

Ä ^ ÄÄ _f -

indicates that the non-metal "h _e covering is composed of indium oxide

_{known from} at least two glasses, in which at least

9 ^S i »LrSas according to claim 7, characterized ge _k eLSSSIiS ZwisLnrWme with Ar _g o„

10 Sölier glass according to claim 7, characterized by the fact that ^P cUe "r _ä ur" e mi, N ₂ O is to use more than two slices to at least ^, Ι ^^ Γίϊϊ ^ ίΓΪ ^^ with ». to provide poorer-necting layers.

are filled with methyl chloride.

G; _a ^ f _e % have a _large building volume and are especially very heavy. The thickness of a known three-pane insulating glass with a pane spacing of 12 mm and a pane thickness of 6 mm is a total of 42 mm.

A special frame construction is required for this

^m i

ierglasses are already in different sun, which penetrates the building interior) on glass

arranged panes of glass ζ. B. in »Die Dauwiiistuau«, ■ ■> .. * _r - ~ -

No. 47/48 (1951), pp. 14 and 15. Difficulties in gluing already built-in

Furthermore, it has also already been proposed that disks are extremely expensive. The sun

protection is very limited and the films are easily scratched.

There are further disadvantages of known insulating glasses, which usually have a pane spacing of 12 mm in the fact that even when using a gas filling with lower thermal conductivity than air, the lower one The conductivity of such a gas is hardly relevant, because the convection at this distance between the panes of such gases is stronger than that of air.

Use heat conduction as air. This allows the thermal insulation to be increased significantly. Examples of such gases are the noble gases argon, krypton and xenon as well as z. B. N _S O and methyl chloride.

The IR reflective layer can be made of any suitable materials. Vaporized metal linings are particularly effective, e.g. B. made of gold or aluminum. Even non-metallic coatings

The aim of the present invention is a Mehrschei- io gene, z. B. those made of indium oxide are suitable. the benisolierglas, the thermal insulation of which layers can also be modified, eg. B. with

Layers of coloring oxides can be combined.

The improvement achieved by the invention is based on a comparison of the K values of an IR reflective one Layer provided two-pane system without film and a two-pane system with intermediate film, in which the Coating was applied to the film. Both systems were filled with krypton, and the loading

K without foil = 1.02 kcal / m ² - ⁰ C-Ii, K with foil = 0.73 kcal / m ² ■ ° C · h.

This example makes it clear that an insulating glass according to the invention, quite apart from the economical cheaper production methods, better thermal insulation properties than a comparable one Insulating glass of conventional design. In the ange

Exceeds known arrangements, or at least derieni ° en a double-pane insulating glass with metal coating (K = 1.5), but essential is more economical to manufacture.

This goal is achieved by a double or multi-pane insulating glass, in which a transparent pane element made of plastic is arranged between at least two panes and which is characterized in that this transparent layering was the same in both cases. Disc element is a plastic film provided with at least one infrared radiation reflective coating, which in the uncoated state for
long-wave infrared radiation is permeable.

Compared to the known, the invention brings 25
some obvious advantages. A significant advantage is that the support for the IR-reflecting layer is a film and not a
massive plate is. Since the weight of the film is negligible, despite the subdivision into the numerical comparison given, the half-spaces also have the weight of a corresponding, improving effect, which is obtained solely by the accommodating insulating glass. The same applies to the division of the space between the panes into two halves of the dimensions, so that it can be installed in conventional spaces.

borrowed frame structures is given. The individual influences on the thermal insulation

Another advantage of the method according to the invention, however, emerges from studies in which Turning a slide is economic in nature. It is all other things being equal and dimensions Far less expensive, a film in a consecutive four arrangements with regard to its heat continuity Evidence of vaporization process, in which insulation were compared with each other: the film is unwound from a roll, the vaporization chamber runs through and after the occupancy 40 System 1: double-pane insulating glass without foil, at

with the IR-reflecting layer back on a ^{J :} - ^P - ^U ~ ^{: 1 :} * " ^{: TD} '"""'^<:"

second roll is wound to vaporize as large solid glass panes. Both processes are that Expert familiar.

The use of a low-absorption plastic film for infrared as a carrier for the IR-reflecting However, layer also has the further advantage that the insulating glass system according to the invention has increased thermal insulation compared to comparable known arrangements. The so Improvement is based on the fact that the film absorbs little thermal radiation and therefore itself in the case of one-sided IR-reflecting coating, it largely looks as if it were covered on both sides.

It can be proven mathematically that the K-55 thick glass panes and a 12 mm wide intermediate value of a 3-element insulating glass decrease noticeably. In case of using a film was ie is better if the IR transmission of the medium- this centrally clamped between the glass sheets, "slice" sized in the blank state ¹¹ O 4O As film was a polyethylene terephthalate film increases. If one now takes into account that a polyethylene terephthalate reflection which is approximately suitable for 80% transmission, 10% absorption and 10 °, Ό the invention uses.

Film at 36 µm thickness had an IR transmission of The IR reflective layer was a silver layer

45 ^° Ai, the transmission of the same film with 95% IR reflection. The layer thickness was at a thickness of 300 μm but already to 10 ".Ό less than 10 mn. The temperature of the outside area drops, it is clear that a plastic plate was 0 ° C, that of the interior, which is covered by the od. 'The advantages according to the invention were not separated by insulating glass, 25 ° C. The K values obtained for four different gas

In the case of the multi-pane insulating glass, too, the fillings of the insulating glass are shown in the following Invention, gas fillings can be reproduced with a lower table:

System 2:

System 3:

one disk was provided with an IR-reflecting coating;

Double-pane insulating glass with foil, in which, according to the invention, the IR-reflective Covering was attached to the foil;

Double-pane insulating glass with foil without any IR-reflective coating;

System 4: Double-pane insulating glass with foil, in which the IR-reflecting layer, however, is was on one of the discs.

The following conditions also applied: A double-pane insulating glass with two 6 mm thicknesses was used

K values in kcal / m * ° C h:

Gas filling system 1 system 2 system 3 system 4

air 1.57 1.46 2.48 1.55 CH ₃ Cl 1.26 0.86 2.18 0.95 krypton 1.06 0.79 2.16 0.93 xenon 0.97 0.63 2.08 0.71

The table clearly shows the superiority of the system 2 according to the invention.

As far as the absolute level of the K values is concerned, BE-PS 6 89 524 already cited in the description of the prior art, for example, has a K value of 0.91 kcal for double-pane insulating glass with krypton filling and an IR-reflecting coating / m ² · ⁰ C · h and for an identical system with two IR-reflecting layers a value of 0.78 is given. It could be proven that the values listed there originate from a calculation based on simplifying assumptions, in which at least the influence of convection was not taken into account. For these simplifying but not realistic exceptions, a correspondingly lower K value would result for the system according to the invention.

The drawing shows the structure of a double-pane insulating glass according to the invention with IR-reflecting Slide shown schematically. In the frame 1 of a known double glazing unit are

ίο two panes of glass 5 inserted. In the middle of the space A film 4 is stretched smoothly and without creases between the panes 5. The slide 4 is through Spacers 6 held in place and divides the space between the panes of glass into two half-spaces 2 and 3, which are filled with a gas at atmospheric pressure, the one inferior Has thermal conductivity than air. For the purpose of pressure equalization between the half-spaces 2 and 3 the film 4 is perforated at one point. The film 4 has an IR-reflecting coating (not shown), which consists of a vapor-deposited metal layer.

1 sheet of drawings

Claims (1)

...
Patent claims: - λ χα u
1. Two or more higher W * ™ ^d !
two slices, one _o ™ ^a _e
“Arranged from plastic
indicates that Multi-pane insulating glass to replace one or more of the previously used glass panes with transparent plastic panes. In particular, with experienced, it was considered advantageous in a three ™ V = ^r _r i _{S srheiben} olierglas the central disc, which by no "nt sera mechanical influences is exposed to perform as a plastic plate (BE-PS 6 38 327). On the other hand, it is known Mehrscheibenisolier _g i _assyst eme LreUerenden for better thermal insulation with infra-> ° layers of metals or metal