DE2827153A1 - Double glazed window unit - has panes flexibly sealed to outer strips and intermediate infrared reflective films - Google Patents

Abstract

The double glazing unit has two glass panes (1, 2) secured by resilient convectors (3, 4) to respective outer frame strips (5, 6). This allows movement to accommodate thermal expansion and pressure differences. The two frame strips are attached at the required spacing to a cover plate (10) by screws (11). A flexible film (8, 9) is attached to the inside edge of each outer frame. A centre frame (7) is then fitted to the plate (10) to tension the films. An infrared coating is applied to each film. Further sound attenuation may be obtained b suitably filling (12) the hollow frame sections.

Description

TITLE:

Ventilated insulating glass FIELD OF APPLICATION: The invention relates to Edge training for insulating glass panes with good acoustic and thermal engineering Properties for large-area glazing of windows and facades.

PURPOSE: For insulating glass panes or double or multiple glazing possibly with interposed foils, measures must be taken to prevent that water vapor precipitates or dust settles in the interstices or that insects invade.

STATE OF THE TECENICS: It is known that with double-glazed windows, to establish a connection between the space between the panes and the outside air, whereby either an air circulation is established, or a vapor pressure equalization by diffusion should take place.

Either valves for air pressure compensation and / or Suggested dust filters to be built into the frames. (504 56c) (37 62 11) In addition, it was claimed that the bar in insulating glass is diffusible train in order to achieve a balance of the vapor pressure. (P 27 53 12 77) As a rule, in order to prevent the formation of condensation, to prevent dust deposits To prevent and consume insects from entering, the insulating glasses on the edge hermetically sealed.

It does this in a number of ways. One possibility is to fuse the slices together at the edge.

A second option is to connect the panes to one another using metal bars to solder. A third option that is practiced is using an edge walkway to fill a desiccant and this relatively vapor-tight with the discs to glue.

It is known that in the case of air layers between surfaces that are metallic and are polished, a minimum of heat transfer at a distance of about 6 cm is achieved and greater spacing between panes than is usual for insulating glass today favorable rated sound insulation values Rw are achieved even with relatively thin panes can be.

It is also known that through transparent plastic films that Can be coated IR-reflecting, the k-value can be improved.

REVIEW OF THE PRIOR ART: Whether deficiencies occurred in practice the methods that connect the space between the glass and the outside air are considered to be outdated. This is partly due to insufficient knowledge of the moisture balance of wood, partly by overestimating the moisture transport caused by diffusion. There is also the gain in thermal protection compared to the effort relatively moderate.

The creation and maintenance of the hermetic edge seal are problematic. This is proven by the relatively high prices and the numerous claims. The causes for the damage are in the various mechanical loads of the Edge connection on the transport, due to air pressure fluctuations, noise, temperature fluctuations, as well as by operating the window. In addition, there is saturation as a cause the desiccant, which is often just beyond the warranty period Keep the inside of the pane free of condensation. These problems are exacerbated with thicker ones and larger glasses and a larger distance between the panes as well as with a better k-value.

So one was previously forced to work at a relatively small distance between the panes to hold, in which only in connection with a hermetic edge seal and special gas fillings as well as relatively expensive metallizing or coating of the inner glass surfaces as well as the k-values and the sound insulation values through thicker panes can be improved. This is what the installation of metallized foils between panes appears to be small distance and not economically feasible with a hermetic edge seal to be.

A fundamental disadvantage of the hermetic edge seal is that it always represents more or less an acoustic coupling of the panes of glass and in practice represents a thermal bridge.

Our own tests with diffusible webs have shown that this only represent a perfect solution if the slices are not the direct one Exposed to the sun.

The use of films is opposed to the fact that no highly transparent films have so far been used Foil is available that is sufficiently UV-resistant.

OBJECT: The invention is based on the object of an edge connection to create that does not have the disadvantages of the hermetic edge seal, easy can be produced and larger spacing between the panes is permitted. The inside of the pane must be free of condensate stay, stay dust-free and no insects should be able to enter. The Kand connection should not cause any acoustic coupling of the panes and should not represent a thermal bridge SOLUTION: After it with double glazing with one or two sandwiched foils and Diffusible and hygroscopic bridge when the pane is partially exposed to the sun in the non-sun-drenched part of the pane on the inside of the outer pane for condensation to form came, the air gap adjacent to the inside of the outside must either be slightly ventilated or the web area of this space must be diffusible and are not hygrossopic.

When using a bar made of a wood material, the Combination of low ventilation with an inner approach to the web with Chlorinated rubber paint prevents condensation from forming, even in extreme climatic changes will.

The ventilation was done through the top and bottom built into the bridge Air filter made of glass fibers, cie connected to the space between the glass by means of narrow bores and were impregnated to repel moisture and bind dust. As is well known Glass fibers also prevent insects from entering.

Tension the individual frames to which the foils are glued the foils when, after being elastically connected to the panes, they are compressed become and be connected to each other. The resulting ridge is against the panes acoustically decoupled and the elastic connection also absorbs the movements of the Disks against each other.

The glazing rebate is formed ventilated and the ventilation openings are Mounted in such a way that the penetration of precipitation moisture is largely prevented will and possibly

penetrated water can run off directly.

The flow through the air gap behind the outermost pane comes into play especially when the windshield is tanned, because then the IR-reflecting Layer is strongly heated because of the light absorption and a starter buoyancy is created. This overcomes the high flow resistance in the air filters and the narrow ones Openings that are necessary for acoustic reasons. For acoustic reasons The interior of the web and the interior of the ventilation profiles can also be sound-absorbing be occupied.

As the observation shows, windows that are not exposed to the sun are diffusible and hygroscopic webs as well as non-hygroscopic webs a flow through not mandatory.

The metallization of the foils facing the outside protects them from UV radiation.

ADVANTAGES: It is possible to glue the bridge and frame elastically, £ by meeting the high gas tightness requirements of the Edge training omitted, so that the disks opposite the web and thus against each other in the web area are acoustically decoupled. The web can be in the area of the corners against the frame block. Compared to the usual design, the glass rebate is well ventilated and represents neither a thermal bridge nor a thermal bridge. Penetrating moisture runs off and ventilates. The length movements of the disks can be mutually exclusive balance. The arrangement of the desiccant is omitted, so that the warranty problems for this is not applicable.

The hermetic edge seal is omitted, so that the warranty is void, as well as the relatively rigid connection.

A wider, light bridge is possible, even without a special Gas filling in IR-reflective coatings can achieve a k value that above today's insulating glass. Good sound insulation values are achieved even without beaded panes achieved.

Because when using one or more IR-reflective coated Foil only the outermost air gap is only weakly ventilated, this ventilation The ventilation also only comes into play when the sun is directly exposed to the sun only an insignificant reduction in the k-value compared to closed air spaces.

By drawing in more than one film, the k-value can and can the sound insulation can be increased even further, with hardly any additional costs but through the choice of thin IR-reflecting layers a color-neutral transparency can be reached.

Due to the web profiling and the waiver of the hermetic edge seal is it possible to clamp films economically in the first place.

Due to the low ventilation, the sound bridges are over the Low air filter and low dust absorption.

The large construction thickness makes the formation of an ample ventilated glass rebate possible without a thermal bridge in the web. Through this that the metallization or IR-reflective coating faces the outside films can be used whose UV resistance is otherwise insufficient is.

DESCRIPTION OF ONE OR MORE EXEMPLARY EMBODIMENTS: In the drawings two exemplary embodiments are shown.

Figure shows an example embodiment of the lower edge of the Glazing.

The double glass is used in a window sash of, for example 58 mm thick. The inner pane is padded against the frame and the rest of it The depth of the fold is filled with thermal insulation but diffusible, so that the bond between the inner pane and the frame is much more vapor-tight than this filling, which extends approximately to the middle of the depth of the double glass or to the level of the room-side limitation of the outer air layer.

The outer part of the double glass is from the air flow in the den It washes around the fold-forming profile that is open at the bottom. Needs for wooden windows the area of the blocking and the thermal insulation only with a ventilation base to be treated here, the moisture exchange between the air and the Allow wood.

The profile (i) connects the two web parts and takes the force that tensions the film.

Figure 2 shows an embodiment with a variant of the profile.

With a thicker frame, the more favorable leverage ratios allow to cover the screw connections with a putty joint. Larger panes can go through additionally built-in profile sections (2) are supported.

FIG. 3 shows a section and FIG. 4 shows a plan view of the side Edge termination with a ventilation opening.

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Claims (1)

ANSPRUCES: MehrfachvetE-Lasung characterized in that two panes at a relatively large distance from each other, at least one of which is coated on the inside IR-reflecting or between which at least one IR-reflective coated film is clamped in which the IR-reflective Layer protects the film against UV radiation and the air gap between the outer pane and inner pane or The outer pane and the outermost film are ventilated via an air filter. 2 # multiple glazing according to the main claim, characterized in that that the foils are stretched by a suitable edge profiling and the gap between the outermost pane and the film is ventilated via an air filter and in the area the (the) remaining (other) interstices (interstice) the web diffusible is trained. 3 multiple glazing according to your main requirement, characterized that the air filters only allow a small amount of air and sound to pass through and are water-repellent and impregnated to bind dust and made of a material that is insect insurmountable such as glass fabrics are formed. # Multiple glazing according to the main claim, characterized in that that the glazing is held by a ventilated frame, the diffusible Web that protects the air filter and thermal insulation and allows it to be independent of the thickness of the sash to install the multiple glass and with a sufficiently ventilated Countersink glass rebate.