CZ2012152A3 - Plastic-made profiled element - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a profiled element made of plastic, in particular for window sashes or for other glazing supports or window frames. The profile element is provided with several chambers (7) which are foamed with foam material (8), preferably polyurethane foam, wherein at least one of the reinforcing elements (9) is supported in one of the chambers (7). The invention further relates to a window sash (1) of such a profile element with glass (2) provided with a glass retaining strip (4), wherein the retaining strip (4) is made of plastic material and foamed with foam material (8). ), preferably polyurethane foam. The present invention further relates to a window frame (5) for a window wing, wherein the window frame (5) is also formed from a profile element according to the invention.

Description

The invention relates to a profile element made of plastic, in particular as a frame profile, and to a sash or other glazing carrier, also intended for window frames or the like, with a number of chambers.

State of the art

The profiles of sash or frames, which are cut to a bevel and joined into the shape of generally four-sided sash or window frames, are made chambered for reasons of stability and insulation, ie they are divided by a number of bridges into a number of chambers in the cross section , which are generally filled with air in order to avoid undesired complications in the production of extruded profiles.

In order to achieve better strength in the area of one or more glass panes (combined glass with two or three panes), a glass element is inserted into one of the larger chambers of the profile element, resp. profile of the window sash, in order to ensure the stability of the window frame in addition to the reinforcement.

After the direct foaming of the profile chambers of the window profiles has brought technological problems (cf. DE 103 56 49 A1), it is further known to use plastic profile elements intended for window profiles (sash or window frames) to improve the insulating properties, in part also inserted polyurethane foam profiles.

However, the situation in which polyurethane foam cores are used in some chambers of a profile element for the production of window or door frames (cf. AT 410 350 A) also presents difficulties with larger dimensions of these elements and is not satisfactory even in terms of achievable heat transfer values.

The essence of the invention

The basis of the invention is therefore the problem of making known a profile element made of plastic, which on the one hand is light, but with regard to its values during heat transfer in houses meets the passive requirements imposed on them, on the other hand it also shows considerable rigidity and mechanical load-bearing capacity. Furthermore, the invention is intended to disclose the respective sash (sash frame) and the window frame, as well as a combination of these elements, forming a complete window system.

According to the invention, this object is solved with regard to the profile element by the features of claim 1.

With regard to a sash, a window frame or a combination of sash and window frames, the above object is solved by the features of claims 8, 10 and 11.

Accordingly, the invention provides a plastic profile element, in particular for sash or other glazing carriers, window frames, door frames or the like, which is formed as a multi-chamber profile with a plurality of chambers which are substantially completely foamed by a foam material, in particular polyurethane foam. wherein a reinforcing element is arranged in at least one of the chambers. Thus, at least substantially complete foaming of all chambers of the profile element is essential, as well as the use of a reinforcing element, in particular a hollow steel profile, preferably an open profile, so that the profile element and thus the window sash or window frame and a heat transfer value Uw <1, which element is light and, in addition, has sufficient mechanical stability.

Preferably, the reinforcing element, in particular the C-shaped steel element or another comparable steel angle element, is completely embedded in the foam material.

Preferably, this foam material, in particular polyurethane foam, does not have a processing temperature or an exothermic reaction temperature higher than 80 to 90 ° C.

Preferred embodiments of the invention are set out in the dependent claims.

Clarification of drawings

The invention will be further elucidated on the basis of exemplary embodiments and the corresponding drawings. They represent:

Fig. 1 is a cross-sectional view of a sash profile frame according to one exemplary embodiment of the invention, Fig. 2 is a cross-sectional view of a sash and window frame combination

Fig. 3a - 3d computer simulated isothermal course of the combination according to Fig. 2, as well as another embodiment, Fig. 4 is a cross-sectional view of a sash combination with a window frame in another embodiment intended for heat-adsorbing or absorbing external surfaces, similar to of the exemplary embodiment according to FIG. 2, and FIG. 5 is a cross section of a combination of a sash and a window frame in another exemplary embodiment intended for heat-repellent outer surfaces, similar to the exemplary embodiment according to FIG. 2.

Examples of embodiments of the invention

Giant. 1 shows a profile frame P of a sash 1 (see FIG. 2). The profile frame P (neither the glass pane nor the glass holding strip) consists of a plurality of foamed chambers 7, preferably a reinforcing element, in particular a steel profile element 9, is accommodated in the largest chamber 7a.

For a further description, which also relates to the profile frame P according to FIG. 1, reference will be made to the following description of FIG. 2.

Fig. 2 shows a cross-section of a sash 1 with a combined glass pane 2 inserted in the sash and shown only schematically, which is held in the sash 1 by sealing profiles 3 and a glass holding strip 4.

Fig. 2 shows a sash 1 in connection with a window frame 5, to which the sash 1 is connected, resp. into which it is pressed by means of sealing profiles 6.

A special feature of the profile frame P (Fig. 1), resp. of the window sash 1, hereinafter referred to as the sash frame 1, which contains a number of chambers 7, consists in the fact that they are all, but at least in an amount of about 75%, completely filled, resp. foamed with polyurethane foam 8 as the foam material, the polyurethane foam 8 preferably being foamed directly and directly into the chambers 7 of the sash frame 1. To achieve the best thermal insulation values, it is advantageous if all chambers 7 are completely foamed. However, the term "substantially complete foaming of the chambers" is to be understood as the degree of filling 100% of the number of chambers 7, down to about 75% of the total number of chambers 7.

Another special feature of the sash frame 1 is that in the largest chamber 7a there is an open steel profile element 9 as a profile reinforcing element of the sash frame 1, which is completely foamed with polyurethane foam and is optionally foamed. resting on the protrusions on the wall of the chamber 7.

Due to the practically complete foaming of the entire transverse profile of the sash frame 1, this frame has a house value of the passive heat transfer capacity Uw <0.8 (value of the thermal conductivity of the material λ = 0.3 W / mK).

The steel reinforcement profile 9 serves for static reinforcement of the sash frame 1 and at the same time as protection against burglary, at the same time it acts as a guiding element of the isotherm inside the sash frame 1 in connection with the combined plate 2, as shown by measurements and simulation results (cf. ).

Figure 1 also shows a cross-sectional window frame 5, which is correspondingly foamed at least 75% in a chamber design (with chambers 11), but is preferably completely foamed with a foam material, in particular polyurethane foam 8. Here, too, in the largest chamber 13, in a substantially vertical extension of the composite panel, as well as in the reinforced chamber 7a of the sash frame 1, a reinforcing element 12, preferably a hollow steel profile part, which is also completely embedded in the foam material, in particular in the polyurethane foam material 8. Here, too, the combination of polyurethane foam material 8 with a reinforcing profile 12, preferably made of steel or fiber-reinforced plastic material, achieves a particularly high thermal insulation capacity of the window frame 1 and excellent mechanical stability and protection against burglary or under . The steel profile part 12 is also supported on the projections 14 or on them.

here, the frame profile of the window frame 5 is preferably foamed in situ with polyurethane in its chambers 11, polyurethane foam with a density of 30 to 40 kg / m 2 being preferably used.

Such a foam with a value of λ of about 0.021 to 0.031 allows to meet the passive house standards, respectively. achieving the advantages of low-energy houses with a heat transfer coefficient Uw <0.8.

On the one hand, the invention provides a lightweight but also mechanically high-strength window and / or frame profile for windows or door frames or the like, which in addition has a high mechanical stability, so that a lower density polyurethane foam but a particularly high resistance to heat transfer.

It is particularly advantageous if the glass holding strip 4 is also foamed with polyurethane foam 8, as also shown in FIG. 1. Furthermore, this improves the insulating heat resistance.

The respective computer simulation patterns of the combined window frame / sash system are shown in Figures 3a to 3d, the isotherms being indicated by the number 15.

Figure 3a shows an embodiment in which the reinforcing profile (steel profile element 9) is inserted only in the sash frame 1, the chambers 11 of the window frame 5 are foamed with polyurethane foam 8 with a value of λ = 0.031, which is also used for foaming the chambers. 7 frame 1 sash. In total, a value Uf = 0.82 W / m ² K is achieved. In FIG. 3b, in addition to the sash frame 1, a reinforcing steel profile element 12 is inserted into the window frame 5. In this case, frame profile) with polyurethane foam with value λ = 0.031 reached value Uf = 0.94 W / m ² K.

When using polyurethane foam with a value of λ = 0.021, the Uf values given in the following table were obtained, the corresponding versions with polyurethane foam with a value of λ = 0.021 being shown in Figures 3c and 3d (without window frame reinforcement and with reinforcement).

value Uf PU foam with λ = 0.031 value Uf PU foam with λ = 0.021 window sash only 1 with steel profile 9 0.82 W / m ² K 0.74 W / m ² K window sash 1 and window frame 5 with steel. prof, element 9, 12 0.94 W / m ² K 0.84 W / m ² K

In this way it is possible to create a window system consisting of a window frame and a sash, which is formed by a combination of a reinforcing element and complete or at least substantially complete foaming of profile element chambers with relatively low density polyurethane foam on the one hand. with passive heat transfer capability and remarkable thermal insulation properties.

It is particularly advantageous in this connection to use plastic hollow profile strips filled with polyurethane foam, also for the retaining strips 4 of the glass.

Suitable reinforcing profile elements 9, 12 are also profile rails, in particular of fiber-reinforced plastics or of fiber-reinforced moldings.

Figure 4 shows another embodiment of the invention, in particular a window system with a sash frame 1 in connection with a window frame 5, wherein the steel profile element 9 as a trapezoidal open hollow profile of the reinforcing element is inserted into the largest chamber 7a of the sash frame 1 and this chamber 7a is completely foamed with polyurethane foam. Optionally, the steel profile element 9 itself rests on the inwardly directed projections of the chambers 7a or also of the chamber walls.

In this case, the outer chambers 7b, 7c, 7d (on the outside of the sash frame 1), in particular the outer front chamber 7b, are preferably not filled with polyurethane foam, and the same applies to the outer chambers 11b. 11c, 1 Id. in particular for the front chamber 11b of the window frame 5. In the largest chamber 13 of the window frame 5 there is a steel profile part 12 as a reinforcing element. different peculiarities.

Such profile elements are preferably used for window or other profile systems which are provided with a heat-absorbing layer, i.e. a less reflective color (darker color), and in which good radiant heat dissipation from the profile elements (sash frame 1 and window frame) is preferred. 5), as well as the outer surface of the profile, in order to prevent heat accumulation in the profile element.

The chambers of the sash 1 or the window frame 5 without foam also serve, at least in part, for draining the profiles.

On the other hand, there is no need to worry about heat build-up in the case of profile elements, for example the sash profile 1 and the window frame 5, which have a very light or white outer layer or color, the outer chambers, in particular the outer front chambers 7b, 11b. are foamed. Figure 5 shows such an exemplary embodiment with a sash frame 1 and a window frame 5, wherein in each case the outer chambers 7b, 11b in the sash frame 1 and in the window frame 5 which lie outside are completely filled with polyurethane foam and, for example, only the intermediate transitions between them chambers 7c, 7d, resp. 11c, 1 Id remain unfilled with foam made "in situ".

In addition, the explanations concerning the exemplary embodiment according to FIGS. 1 to 3 also apply to this exemplary embodiment, unless the special features of the profile configurations are explained here.

Here, too, the window frame 5 has in its largest chamber 13 a stabilizing open steel profile 12 as a reinforcing element.

By setting the degree of foaming of profile elements and placement of foamed and non-foamed chambers of profile elements (sash frame 1 and window frame 5) it is possible to determine heat transfer profile taking into account heat input due to outer layer or color (degree of reflectivity or absorption) of profile body system.

The invention is of course also applicable to door elements or to other profile elements arranged for insertion into the outer walls of buildings or already inserted there, for example in the area of prefabricated houses.

Patent claims

Claims (11)

Patent claims A plastic profile element, intended in particular for sash windows or other glazing carriers or for window frames, with a plurality of chambers, characterized in that the chambers (7, 11) are completely foamed with a foam material (8) and in at least one of a reinforcing element (9, 12) is mounted in the chambers (7a, 13). Profile element according to Claim 1, characterized in that the foam material is polyurethane foam (8). Profile element according to Claim 1 or 2, characterized in that the reinforcing element in the chamber (7a, 13) is embedded in the foam material, in particular in the polyurethane foam (8). Profile element according to one of the preceding claims 1 to 3, characterized in that the reinforcing element (9, 12) is a profile, in particular a substantially C-shaped profile or a box profile which is made of steel, glass-fiber-reinforced plastic or the like. Profile element according to one of the preceding claims 1 to 4, characterized in that the volume of the chamber (7a, 13) in which the reinforcing element (9, 12) is accommodated is greater than the volume of the other chambers (7, 11). Profile element according to one of the preceding claims 1 to 5, characterized by a connection to at least one glass pane (2), preferably a plurality of these panes, the chamber (7a, 13) with the reinforcing element (9, 12) being substantially arranged in a vertical extension of the glass panes (2). Profile element according to one of the preceding claims 1 to 6, characterized in that at least one externally mounted front chamber (7b, 11b) is provided which is not filled with plastic foam or is not completely filled with plastic foam. Window sash with a profile element according to one of the preceding claims 1 to 7. 9 · .. * · .. · ··. ··. ·· Window sash according to Claim 8, with a glass retaining strip (4) made of a plastic material which is foamed with a foam material, in particular polyurethane foam. Window frame with profile element according to at least one of the preceding claims 1 to 7. A sash combination with a window frame according to claim 8 or 9 and claim 10.