CH705044A2 - Profile element made of plastic, particularly for casements. - Google Patents

Abstract

The invention relates to a profile element made of plastic, in particular for window sash or other glazing support or window frame, with a plurality of chambers, wherein the chambers (7, 11) are completely foamed with a foam material (8) and in at least one of the chambers (7a, 13 ) a reinforcing element (9, 12) is provided. The invention further relates to a window sash with such a profile element with a glass retaining strip (4) made of plastic material, which is foam-filled with foam material, in particular polyurethane foam, and a window frame with such a profile element.

Description

The invention relates to a profile element made of plastic, in particular as a frame profile and sash or other glazing support or window frame or the like., With a plurality of chambers.

Sash or frame profiles, which are mitred, connected to general four-sided sashes or window frames, are chambered for stability and isolation reasons, i. E. the profile cross-section is divided by a plurality of lands into a number of chambers which are generally air-filled to avoid unnecessary complications in the extrusion fabrication of the profiles.

To improve the strength in the range of one or more glass panes (two- or three-pane laminated glass), a reinforcement has already been used in the region of the glass pane within one of the larger chambers of the profile element or window sash profile to the stability of the window frame to ensure.

It is also known to use partially to improve the insulating properties of plastic profile elements for window profiles (casement or window frame) insert profiles of polyurethane foam after the immediate foaming of profile chambers of window profiles raises technological problem (see DE 1 035 649 A1 ).

However, the use of polyurethane foam cores in some chambers of a profile element for the production of window or door frames (cf .. AT 410350 A) prepares for larger dimensions of the elements difficulties and is not satisfactory in terms of achievable heat transfer values.

The invention is therefore an object of the invention to provide a profile element made of plastic, on the one hand is light, but meets passive house requirements in terms of its heat transfer values, but on the other hand also has a high rigidity and mechanical load capacity. Furthermore, a corresponding window sash (casement) and a window frame and a combination of these should be specified as a complete window system.

According to the invention this object is achieved with respect to the profile element with the features of claim 1.

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

Accordingly, according to the invention a profile element made of plastic, in particular for window sash or other glazing support, window frame, door frame or the like. Provided, which is designed as a multi-chamber profile of a plurality of chambers which are substantially completely filled with a foam material, in particular polyurethane foam, wherein in at least one of the chambers, a reinforcing element is provided. Essential is therefore the at least substantially complete foaming of all chambers of the profile element and the use of a reinforcing element, in particular a steel hollow section, preferably an open profile, so that the profile element and thus the existing of this window sash or window frame on the one hand very high thermal insulation properties and a heat transfer value Uw <1, is light and, moreover, has sufficient mechanical stability.

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

Preferably, this has the foam material, in particular polyurethane foam no higher processing or exothermic reaction temperature than 80 to 90 ° C.

Preferred embodiments of the invention are set forth in the subclaims.

The invention will be explained in more detail below with reference to embodiments and accompanying drawings. In these show: <Tb> FIG. 1 <sep> a profile frame of a window sash according to an embodiment of the invention in cross section. <Tb> FIG. 2 <sep> a combination of a sash with a window frame in cross section. <Tb> FIG. 3a-3d <sep> is a computer simulation representation for the isothermal course in the combination according to FIG. 2, as well as a further exemplary embodiment, <Tb> FIG. FIG. 4 shows a combination of a window sash with a window frame in cross-section in a further exemplary embodiment for heat-adsorbing or absorbing outer surfaces, similar to the exemplary embodiment according to FIG. 2, and FIG <Tb> FIG. 5 <sep> a combination of a window sash with a window frame in cross-section in a further exemplary embodiment for heat-rejecting (reflecting) outer surfaces, similar to the exemplary embodiment according to FIG. 2.

Fig. 1 shows a profile frame P of a window sash 1 (see Fig. 2). The profile frame P (a glass pane and glazing bead are not shown) consists of a plurality of foamed chambers 7, wherein preferably in the largest chamber 7a a reinforcing element, in particular a steel profile element 9 is inserted.

For the further description, also of the profile frame P of FIG. 1, reference is made to the following description of Fig. 2.

In Fig. 2 is a cross-sectional view of a window sash 1 with a used in this, only schematically illustrated laminated glass pane 2 is shown, which is held on the sash 1 via sealing profiles 3 and a Glashalteleiste 4.

In Fig. 2 the wing 1 is shown in conjunction with a window frame 5, with which the sash 1 via sealing profiles 6 in engagement or in pressure system.

The peculiarity of the profile frame P (Fig. 1) and the window sash 1, hereinafter referred to as sash 1, which has a plurality of chambers 7, is that all of them, but at least in a number of about 75% , are completely filled or foamed with polyurethane foam 8 as a foam material, wherein the polyurethane foam 8, the chambers 7 of the casement 1 preferably foams directly and directly. It is preferred that all chambers 7 are completely filled with foam to achieve the best thermal insulation values. However, a "substantially complete foaming of the chambers" is understood as meaning a degree of 100% of the number of chambers 7 down to about 75% of the number of chambers 7.

Another peculiarity of the sash 1 is that in the largest chamber 7a an open steel profile element 9 is as a profile reinforcement element for the sash 1, which is completely foamed in the polyurethane foam and possibly supported on wall projections of the chamber wall of the chamber 7 ,

Due to the virtually complete foaming of the overall profile cross-section of the casement 1, this has a passive house suitable Uw value of <0.8 (thermal bridge value λ = 0.3 W / mK).

The Stahlarmierungsprofil 9 serves the static reinforcement of the sash 1, at the same time as burglary protection and also acts as an isotherm guide element within the sash 1 in conjunction with the composite disk 2, as measurements and simulation results have shown (see Fig .. 2a-2d ).

In Fig. 1 at the same time the window frame 5 is shown in cross-section, which is also foamed in a corresponding manner to at least 75%, but preferably completely in a chambered design (chambers 11) with foam material, in particular polyurethane foam 8. Again, located in the largest chamber 13, substantially in vertical extension of the composite disc and the armored chamber 7a of the sash 1 a reinforcing element 12, preferably a hollow profile part made of steel, which is also completely embedded in foam material, in particular polyurethane foam 8. Again, the combination of polyurethane foam material 8 with Armierungsprofil 12, preferably made of steel or fiber-reinforced plastic material on the one hand, a particularly high thermal insulation characteristic of the window frame 11, on the other hand excellent mechanical stability and protection against burglary. reached. Also, the steel profile part 12 is possibly supported on projections 14.

Again, preferably the frame profile of the window frame 5 is filled with its chambers 11 in situ 'with polyurethane, preferably using a polyurethane foam having a density of 30 to 40 kg / m <3>.

Such a foam with a λ-value of about 0.021 to 0.031 allows the fulfillment of the passive house normative or the specifications for low-energy houses with a heat transfer coefficient Uw ≤ 0.8.

By the invention a light one hand, on the other hand mechanically high-strength window and / or frame profile for windows or door frames or the like. In addition, it has a high mechanical stability, so that a less dense polyurethane foam with a particularly high heat transfer resistance can be used.

It is particularly advantageous if the glass retaining strip 4 is foamed with polyurethane foam 8, as shown in Figure 1 also. As a result, the thermal insulation strength is further improved.

The corresponding computer simulation images of the window frame / sash composite are shown in Figures 3 through 3d, the isotherms being labeled 15.

In Fig. 3a, an embodiment is shown, in which the reinforcing profile (steel profile element 9) is used only in the casement 1 of the sash, the chambers 11 of the window frame 5 are filled with a polyurethane foam 8 of λ = 0.031, which is also for the Foaming of the chambers 7 of the sash 1 is used. Overall, an Uf value of 0.82 W / m <2> K is achieved here. In FIG. 3 b, in addition to the casement 1, the reinforcing steel profile element 12 is also inserted in the window frame 4. In this case, when foaming the chambers of the profiles 1 and 4 (sash profile and frame profile) with a PUR foam having a λ value of 0.031 Uf values of 0.94 W / m <2> K are achieved.

When using a polyurethane foam with a λ-value of 0.021, the Uf values listed in the following table, wherein the corresponding designs for polyurethane foam with λ = 0.021 in Figs. 3c and 3d (without and with reinforcement of the window frame ) are shown. <Tb> <sep> Uf value PU foam λ - 0.031. <Sep> Uf value PU foam λ = 0.021.0.82 W / m <2> 0.74 W / m <2> <tb> Only sashes 1 with steel profile 9 <sep> K <sep> K0.94 W / m <2> 0.84 W / m <2> Window sash 1 and window frame 5 with steel profile element 9, 12 <sep> K <sep> K

In this way, an existing window frame and window sash window system can be created, which created by the combination of reinforcing element on the one hand and complete or at least substantially complete foaming of the chambers of the profile elements with polyurethane foam relatively low density on the other hand a passive house window frame system with high thermal insulation properties become.

It is particularly advantageous in this context to use for the glazing beads 4 with polyurethane foam foam-filled plastic hollow profile strips.

As Armierungsprofilelemente 9, 12 come from rails, in particular fiber-reinforced plastics or fiber-reinforced molding compounds into consideration.

Fig. 4 shows a further embodiment of the invention, in particular for a window system with a casement 1 of a window sash in conjunction with a window frame 5, wherein a steel profile element 9 in the largest chamber 7a of the sash 1 used as a trapezoidal-open hollow profile as a reinforcing element and the chamber 7a is completely foamed in Polyurthanschaum. Optionally, the steel profile element 9 is supported on the inwardly facing projections of the chamber 7a or the chamber walls themselves.

In this case, preferably outer chambers 7b, 7c, 7d (on the outside of the sash 1), in particular the outer prechamber 7b, are not foamed with PU foam and accordingly also applies to the outer chambers 11b, 11c, 11d, in particular the frame pre-chamber 11b, the window frame 5. In the largest chamber 13 of the window frame 5 is a steel profile part 12 as a reinforcing element. Also for this embodiment, the explanations apply to the embodiment of FIGS. 1 to 3, as far as not the explained different peculiarities are addressed.

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

The foam-free chambers of the sash 1 or the window frame 5 serve, at least partially, and the drainage of the profiles.

For profile elements, e.g. Wing profile 1 and window frame 5, which is a very light or white, i. on the other hand, such a heat accumulation is not to be feared and the outer chambers, in particular the outer prechambers 7b, 11b are filled with foam. Fig. 5 shows such an embodiment with casement 1 and window frame 5, wherein each of the outer pre-chambers 7b, 11b in both the casement 1 and in the window frame 5 is completely filled with polyurethane foam (PU foam) and, for. only intermediate transition chambers 7c, 7d, and 11c, 11d remain free from the foams carried out "in situ".

Incidentally, also apply to this embodiment, the explanations to the embodiment of FIGS. 1 to 3, unless the particular features of the profile configurations explained here are concerned.

The window frame 5 also has here in its largest chamber 13 a stabilizing, open steel profile 12 as a reinforcing element.

By adjusting the degree of foaming of the profile elements and the position of foamed and non-foamed chambers of the profile elements (casement 1, window frame 5), the heat transfer profile can be adjusted taking into account the heat input due to the outer coating or coloring (reflection or absorption) of the profile body system become.

Of course, the invention is also applicable to door elements or other profile elements to be used or inserted in outside walls of buildings, e.g. Can be used in prefabricated house area.

Claims (11)

1. profile element made of plastic, in particular for window sash or other glazing support or window frame, with a plurality of chambers, characterized in that the chambers (7, 11) are completely filled with a foam material (8) and in at least one of the chambers (7a, 13) a reinforcing element (9, 12) is provided. 2. Profile element according to claim 1, characterized in that the foam material polyurethane foam (8). 3. Profile element according to claim 1 or 2, characterized in that the reinforcing element in the chamber (7a, 13) in the foam material, in particular in the polyurethane foam (8) is embedded. 4. profile element according to at least one of the preceding claims 1 to 3, characterized in that reinforcing element (9, 12) is a profile, in particular a substantially C-shaped or box profile, which is made of steel, fiberglass or the like. 5. profile element according to at least one of the preceding claims 1 to 4, characterized in that a chamber volume of the chamber (7a, 13), in which the reinforcing element (9, 12) is arranged, is greater than the chamber volume of other chambers (7, 11 ). 6. Profile element according to at least one of the preceding claims 1 to 5, characterized by connection with at least one, preferably a plurality of glass panes (2), wherein the chamber (7a, 13) with the reinforcing element (9, 12) substantially in a vertical Extension of the glass sheets (2) is arranged. 7. profile element according to at least one of the preceding claims 1 to 6, characterized in that at least one outer prechamber (7b, 11b) is provided, which is not or not completely filled with plastic foam. 8. sash with a profile element according to at least one of the preceding claims 1 to 7. 9. sash according to claim 8 with a glass retaining strip (4) made of plastic material, which is foamed with foam material, in particular polyurethane foam. 10. window frame with a profile element according to at least one of the preceding claims 1 to 7. 11. Combination of window sash and window frame according to claim 8 or 9 and claim 10.