PL237554B1 - Shaped plastic element - Google Patents

Description

Description of the invention

The invention relates to a profiled plastic element, particularly used as a frame profile and a hinged sash or other glazing bearers, as well as for window frames or the like comprising a plurality of chambers.

Hinged window sash or frame profiles that are joined, in the case of a miter joint to form generally four-sided hinged window sashes or window frames, are constructed in a chamber manner for the sake of durability and insulation, i.e. the cross-section of the profile is further subdivided by using a plurality of bridges over a plurality of chambers, which are generally air-filled, in order to avoid unnecessary complications in the production of profiles by extrusion. In order to improve the strength properties in the area of one or more glass panes (two or three laminated glass panes), a structural reinforcement or stiffening elements have already been inserted in the area of the pane in one of the larger chambers of the profiled element or the hinged profiled sash to guarantee the durability of the window frame.

In addition, it is known to partially use polyurethane stiffening profiles to improve the insulating properties of plastic profiled elements for window profiles (hinged window sashes or window frames) as direct foamed window profile chambers entails technical problems (see the German description DE 103 56 49 A1).

However, the insertion of polyurethane foam cores into some chambers of the profiled element for the production of window or door frames (see Austrian patent application AT 410 350 A) causes difficulties in the case of larger dimensions of the elements and is also not satisfactory with regard to the achievable heat transfer values.

Accordingly, an object of the invention is to provide a profiled plastic element which is on the one hand light but satisfactory with regard to its heat transfer values with respect to the requirements of a passive house, but which on the other hand is also characterized by high rigidity and load capacity. mechanical. It is also an object of the invention to provide a corresponding hinged sash (hinged sash frame) and a window frame as well as the combination of these elements in the form of a complete window system.

Surprisingly, the objective thus defined has been achieved in the present invention.

The subject of the invention is a profiled plastic element, especially for hinged window sashes or other glazing or window frame supports, characterized in that it comprises a plurality of chambers (7, 11), the number of which ranges from about 75% to 100% of the chambers (7, 11) is completely foamed with the use of foamed material (8) and in that at least one of the fully foamed chambers (7a, 13), the chamber volume of which is larger than the chamber volume of other chambers (7, 11), has a stiffening element (9, 12) which is immersed in spienianym material, wherein spienianym material is a polyurethane foam (8) having a density of from 30 to 40 kg / m ³ and the values λ of from 0.021 to 0.031, the said profiled element has an outer sleeve or a heat absorbing or heat reflecting color (s) where its heat transfer profile is controlled taking into account heat input which is influenced by the presence of the outer coating or coloring, by adjusting the degree of foaming of the profile elements and the position of the foamed and foam-free chambers (7, 11), so that the heat transfer value of the profile element Uw <1.

Preferably, the stiffening element (9, 12) is a profile, in particular a substantially C-shaped profile or a lattice profile made of steel, GFK (glass fiber reinforced plastic) or the like.

Preferably, the connection to at least one, preferably a plurality of glass panes (2), the chamber (7a, 13) is configured such that the stiffening element (9, 12) is substantially in the vertical extension of said glass panes (2).

Preferably, the profiled element according to the invention is characterized in that it comprises at least one externally arranged pre-chamber (7b, 11b) which is not or partially filled with foam.

Another object of the invention is a hinged window sash, characterized in that it comprises a profiled element according to the invention as defined above.

Preferably, the sash according to the invention comprises a glass fixing rail (4) made of a plastic material and foamed with a foamed material, especially polyurethane foam.

PL 237 554 B1

A further object of the invention is a window frame, characterized in that it comprises the profiled element according to the invention as defined above.

Another object of the invention is the combination of a hinged sash and a window frame according to the invention as defined above.

Regarding a hinged window sash, a window frame or a combination of a hinged sash and a window frame, the above-mentioned object is solved by the characteristics of claims 8, 10 and 11.

Accordingly, the invention provides a profiled plastic element, particularly for hinged window sashes or other glazing supports, window frames, door frames, etc., which is constructed as a multi-chamber profile comprising a plurality of chambers substantially completely filled with foam using foamed material, particularly polyurethane; at least one of said chambers is provided with reinforcing or stiffening elements. Accordingly, the critical point is that all chambers of the profile element are at least substantially completely filled with foam and that a stiffening element, in particular a hollow steel profile, preferably an open profile, is used, whereby said profile element and thus a hinged window sash or The window frame containing this element, on the one hand, has very good thermal insulation properties and a heat transfer value Uw <1, and on the other hand, sufficient mechanical durability.

Preferably, the stiffening element, especially a C-shaped element or a comparable open T-square steel element, is completely immersed in the foamed material.

Preferably, said foamed material, especially polyurethane, has a processing temperature or an exothermic reaction temperature that does not exceed 80 to 90 ° C.

Advantageous embodiments of the invention are detailed in the dependent claims.

Hereinafter, the invention will be explained in more detail by way of examples with the related illustrations, wherein Fig. 1 is a cross-sectional view of a profiled hinged sash frame according to an embodiment of the invention;

Figure 2 shows a cross-sectional view of the connection of the hinged sash and the window frame;

Figs. 3a-3d show computer simulations of the isothermal curve of the connection of Fig. 2, as well as another embodiment;

Figure 4 is a cross-sectional view of the connection of the hinged sash and window frame according to another embodiment for external heat-absorbing surfaces, similar to the embodiment in Figure 2; and fig. 5 is a cross-sectional view of the connection of the hinged sash and window frame according to another embodiment for heat-repelling (reflecting) outer surfaces, similar to the embodiment in fig. 2.

Fig. 1 shows a profiled P-frame of a hinged sash 1 (see Fig. 2). Said profiled P-frame (glass pane and glass fastening rail not shown) consists of a plurality of foam chambers 7; a stiffening element, particularly a profiled steel element 9, which is preferably inserted into the largest chamber 7a.

Regarding the further description of the profiled frame P according to Fig. 1, reference should be made to the following description of Fig. 2.

Fig. 2 is a cross-sectional view of a hinged window sash 1 with a laminated glass pane 2 inserted into this sash and shown only schematically of what is attached to said hinged sash 1 by means of sealing profiles 3 and a glass fastening rail 4.

Fig. 2 shows a hinged sash 1 in combination with a window frame 5 with which said hinged sash 1 is in engagement or contact under the pressure exerted by the sealing profiles 6.

A specific feature or distinguishing feature of the profiled P-frame (Fig. 1) or hinged sash 1, hereinafter referred to as a hinged sash frame 1 comprising a plurality of chambers 7, is that all these chambers, in an amount of at least about 75%, are completely filled or foamed with polyurethane foam 8 as the foamed material, said polyurethane foam 8 preferably directly

The foamed chambers 7 of the hinged sash frame 1. It is preferred that all chambers 7 are fully foamed in order to obtain the best thermal insulation values. However, "substantially complete expansion of the chambers" is meant to be 100% of the number of chambers 7 to about 75% of the number of chambers 7.

Another specific feature of the hinged sash frame 1 is that the largest chamber 7a comprises an open profile steel element 9 as a profile stiffening element for the hinged window sash frame 1, said steel element being completely immersed in said polyurethane foamed material and supported if necessary, through the wall portions projecting the walls of the chamber 7.

Due to the actually completely foamed total cross-section of the hinged sash frame 1, it has a Uw value of the compliant passive house of <0.8 (thermal bridge value λ = 0.3 W / m ² K).

The profiled steel stiffening element 9 is used to reinforce the static stiffening elements of the hinged sash frame 1, in a similar way as anti-burglary protection and at the same time acts as an isothermal guide element in said hinged sash frame 1 in combination with laminated glass pane 2, as shown by the measurement and simulation results (see Figs. 2a-2d).

According to Fig. 1, the window frame 5 is shown in its cross-section, also being suitably foamed to at least 75%, but preferably completely, in an embodiment equipped with chambers (11) using foamed material, especially polyurethane foam 8. In this, In the event, the largest compartment 13 is preferably also provided, substantially with the vertical extension of the laminated pane, as well as the stiffened compartment 7a of the hinged sash frame 1, with a stiffening element 12, preferably a profiled hollow steel component, which is also completely immersed in the foamed material , especially in polyurethane foamed material 8. Here, too, the combination of PUR foamed material 8 with a profiled stiffening element 12, preferably made of steel or fiber-reinforced plastic material, on the one hand results in a particularly high thermal insulation performance of the window frame 11 and, on the other hand, excellent durability of the mec and security against burglary or the like. The profiled steel component 12 may, if desired, also be supported on the projecting parts 14.

In this case, also profiled frame of the window frame 5 of the chambers 11 is also foamed in place with polyurethane being preferably used in polyurethane foam having a density of from 30 to 40 kg / m ^3.

Such a foam with a λ value of approximately 0.021 to 0.031 makes it possible, overall, to comply with passive house standards or low energy house standards for a heat transfer coefficient Uw <0.8.

The invention provides a window and / or frame profile for window or door frames that is light on the one hand and has high mechanical strength on the other hand, and in addition has high mechanical durability, so that a polyurethane foam with a lower density can be used. with particularly high resistance to heat transfer.

It is particularly advantageous that the glass fastening rail 4 is also foamed with polyurethane foam 8, as is also shown in Fig. 1. In this way, the thermal insulation strength can be further improved.

Corresponding computer simulations of the combined window frame / hinged sash frame are shown in Figures 3a to 3d and the isotherms are denoted by the numeral 15.

Fig. 3a shows an embodiment with a stiffening profile (steel profile element 9) which is only inserted into the frame of the sash and the hinged sash; chamber 11 of the window frame 5 are foamed with polyurethane foam 8 with λ = 0.031, which is also used for foaming the chambers 7 of the sash frame hinged 1. The whole is achieved Uf value amounting to 0.82 W / m ² K. In Figure 3b, the stiffening element of the steel profile element 12 is not only inserted into the hinged sash frame 1, but also into the window frame 4. In this connection, when foaming the profile chambers 1 and 4 (hinged window sash and frame profiles) using PUR foam having a λ value of 0.031, the achieved values Uf of at 0.94 W / m ² K.

PL 237 554 Β1

When using a polyurethane foam with a λ value of 0.021, the Uf values listed in the table below are obtained; corresponding to the results for PUR foam with λ = 0.021 shown in Figs. 3c and 3d (with and without the window frame stiffening elements).

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

Thus, a window system comprising a window frame and a hinged sash may be provided by joining a stiffening element or a reinforcement element on the one hand, and by completely or at least substantially completely foamed the chambers of the profiled elements using relatively low-density polyurethane on the other hand. sides so as to provide a window frame system for a flexible passive house with very good thermal insulation properties.

In this connection, a particular advantage is the use of hollow plastic profile strips foamed with polyurethane foam also for the glass fastening rails 4.

Profile rails, especially those made of fiber-reinforced plastics or fiber-reinforced press materials, can also be used as profile stiffening elements 9, 12.

A further embodiment of the invention is illustrated in Fig. 4, in particular for a window system comprising a hinged sash 1 of a sash in combination with a window frame 5, in which the profiled steel element 9 is housed in the largest compartment 7a of the hinged sash frame 1. such as an open hollow profile with a frusto-conical or trapezoidal shape as a stiffening element, and the chamber 7a is completely formed using polyurethane foam. Occasionally, the steel profile 9 supports or rests on the inwardly oriented protruding parts of the chamber 7a or may also bear on the walls of the chamber itself. In this case, preferably the outer chambers 7b, 7c, 7d outside the hinged sash 1, in particular the outer pre-chamber 7b, are not filled with PU foam, and accordingly, this also applies to the externally arranged chambers 11b. 11 c, 11 d, in particular, to the pre-frame chamber 11 b, the window frame 5. Inside the largest chamber 13 of the window frame 5, there is also a profiled steel element 12 as a stiffening element. Also for this embodiment, the explanations above for the embodiment shown in Figs. 1-3 apply with respect to the consistent details discussed herein.

Such profile elements are preferably used for windows or other profile systems which are equipped with heat absorbing elements or heat absorbing coatings, i.e. with a color that causes less reflection (darker color) and for which it is advantageous to transfer radiant heat evenly from the profile element. (hinged window sash 1, window frame 5) as well as from the outer surface of the profiles to avoid heat accumulation inside the profile element near its outer surface.

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

Profile elements, such as a hinged window sash 1 and a window frame 5, having a very light or white coating or color, i.e. a relatively highly reflective heat reflecting surface or coating, however, you should not be afraid of such a heat blockage or its accumulation, and the outer chambers, in particular, the outer pre-chamber 7b, 11b is filled with foam. Figure 5 shows such an embodiment with a hinged sash 1 and a window frame 5, in which the outer pre-chambers 7b, 11b, both in the hinged sash 1 and inside the window frame 5, are completely filled with polyurethane foam (foam PU) and for example, only the intermediate transition chambers 7c, 7d or 11c, 11d, respectively, remain free from filling "in situ" with foam.

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

PL 237 554 B1

By adjusting the degree of foaming of the profile elements from the foamed positions and the unfoamed chambers inside the profile elements (hinged window sash 1, window frame 5), the heat transfer profile can be adjusted taking into account the heat input, which is influenced by the presence of an external coating or by coloration (degree of reflection or absorption) of the profile element system.

The invention can, of course, also be used for door elements or other profile elements to be inserted or inserted into the outer walls of buildings, for example in the field of prefabricated houses.

Claims (8)

1. A profiled plastic element, especially for hinged window sashes or other glazing or window frame supports, characterized in that it comprises a plurality of chambers (7, 11), with an amount ranging from about 75% to 100% of the chambers (7, 11). ) is completely foamed with the use of foamed material (8) and in that in at least one of the fully foamed chambers (7a, 13), the chamber volume of which is greater than the chamber volume of other chambers (7, 11), a stiffening element ( 9, 12) which is immersed in spienianym material, wherein spienianym material is a polyurethane foam (8) having a density of from 30 to 40 kg / m ³ and the values λ of from 0.021 to 0.031, the said profiled element has an outer coating or a heat-absorbing or heat-reflecting color, where its heat transfer profile is controlled taking into account the heat input that is affected by the presence of an outer coating or color, through a controlled The degree of foaming of the profile elements and the position of the foamed and foam-free chambers (7, 11) so that the heat transfer value of the profiled element Uw <1. 2. A profiled element according to claim A profile according to claim 1, characterized in that the stiffening element (9, 12) is a profile, in particular a substantially C-shaped profile or a lattice profile made of steel, GFK (glass fiber reinforced plastic) or the like. 3. A profiled element according to claim A process according to claim 1-2, characterized in that the connection to at least one, preferably a plurality of glass panes (2), the chamber (7a, 13) is configured such that the stiffening element (9, 12) is substantially in the vertical extension of said glass panes. (2). 4. Profile element according to any of the claims A pre-chamber (7b, 11b) which is not filled or is partially filled with foam. Hinged window sash, characterized in that it comprises a profiled element according to any one of claims 1 to 5. 1-4. 6. The sash according to claims 5. A method according to claim 5, characterized in that it comprises a glass mounting rail (4) made of a plastic material and foamed with a foamed material, especially polyurethane foam. A window frame, characterized in that it comprises a profiled element according to any one of claims 1 to 6. 1-4. 8. A combination of a hinged sash and a window frame according to claim 1. 5 or 6 and claims 7.