HRP20110564T1 - Insulating frame element for windows and doors - Google Patents

Abstract

The invention relates to a wooden frame element for the manufacture of window or door frames with channels (22) running in the longitudinal direction within the frame element and containing air as a thermal insulating medium. The channels (22) are designed as slots directed at right angles to the window or door plane and are cut deeply into the width of each wood layer (18), wherein each channel (22) is closed on both ends of the frame element (16) extending in the longitudinal direction. In the process, it is advantageous for each frame element (16) to include an insulating core (32) that extends in the longitudinal direction of the frame element, said core comprising a plurality of wood layers (18) into which the channels (22) are cut, said layers being covered on the open longitudinal side thereof by a proximate separating layer (34).

Claims (11)

1. A wooden frame element for a window frame or for a door frame with channels which are made as slits and which extend longitudinally within the frame element and are closed at both ends of said frame element, wherein said slits contain air as heat insulating material, indicated by the fact that the said frame element (16) is made of a number of layers of wood (18) which are firmly connected to each other, in which the said gaps (22) are cut at right angles to the plane of the window or door, wherein the open longitudinal side of said gaps in each of the layers of wood (18) is covered with a corresponding layer of wood (18) or with a separate layer (34) or with a covering layer (20). 2. A frame element according to claim 1, characterized in that said layers of wood (18) are glued to each other. 3. A frame element according to claim 1 or 2, characterized in that each frame element (16) has an insulating core (32) that extends in the longitudinal direction of the frame element (18), wherein said core (32) contains a larger number of wooden layers (18) into which said slits (22) are cut in the longitudinal direction, whereby the open longitudinal side of said slits (22) is covered with a suitable separation layer (34). 4. A frame element according to claim 3, characterized in that the separating layers (34) inside said insulating core (32) extend parallel to the plane of the window or door, and said layers are made of cork or wood. 5. A frame element according to claim 3 or 4, characterized in that the slits (22) are cut mirror-symmetrically in the corresponding layer of wood (18) on both sides, in such a way that they extend into it to a depth that is less than half the width of the specified layer of wood (18). 6. Frame element in accordance with patent claim 5, characterized in that the gaps (22) lie in transverse planes that extend at right angles to the plane of the window or door, so that between each of the two adjacent transverse planes of the gap, continuous transverse lamellas (54) which are located in a row one behind the other. 7. A frame element according to any one of the preceding claims 3 to 6, characterized in that the insulating core (32) is located on its inner side and on its outer side between corresponding covering layers (36) extending parallel to said gaps (22) and wherein the covering layers are made of deciduous wood, while the wooden layers (18) of said insulating core (32) are made of coniferous wood. 8. A frame element according to any of the preceding patent claims, characterized in that each gap (22) is closed at both ends by means of a short wooden slat (50) which is inserted into said gap (22), the cross-section being the specified slats (50) aligned with the cross-section of the channel. 9. Frame element according to patent claim 8, characterized in that said wooden slats (50) are glued in gaps (22). 10. A frame element according to patent claim 8 or 9, characterized in that a greater number of wooden slats (50), at their ends that are not caught in the gaps (22), are connected to each other by a transverse closing piece (52) in order to obtain a closed element ( 48), wherein said transverse piece is made of wood and in the inserted position rests on the front side (46) of the frame element (16). 11. A frame element according to any one of the preceding claims 1 to 7, characterized in that the slits (22) cut into the layers (18) of wood extend only through a part of the length of the frame element (16).