Insulated wall element for modular timber construction

Abstract

Wall element for the production of a thermally insulated building envelope, especially for modular timber construction, comprising - a load-bearing timber frame with a sill (7), a top plate (8), several posts (9) and at least one stiffening strut (6), - an outer deck plate (2), - an inner cover plate (3), - Installation pipes integrated into the timber frame (4), characterized in that all cavities of the timber frame are filled with a hardening rigid foam, wherein the rigid foam connects and seals the components together in a materially bonded manner.

Description

Technical field

[0001] The invention relates to a prefabricated, load-bearing and stiffening wall element for the production of a thermally insulated building envelope, in particular for modular timber construction. State of the art

[0002] In the prior art, timber frame and stud walls are known, where bracing is regularly achieved via single- or double-sided sheathing. Sandwich panels and prefabricated wall modules with integrated thermal insulation are also known. However, these often have a separate service cavity and require multi-stage assembly processes.

[0003] A particular disadvantage is that known systems do not provide a full-surface, material-bonded connection of all components through the insulation, and installations have to be added subsequently. Object of the invention

[0004] The invention is based on the objective of providing a wall element that has a static stiffening effect, can be completely prefabricated in the factory, has high thermal insulation, integrates installations and enables a vapor- and wind-tight building envelope. Solution

[0005] This problem is solved by a wall element with the features of claim 1. The core of the invention is a load-bearing timber frame whose cavities are completely filled with a hardening rigid foam. The rigid foam bonds all components together and seals joints.

[0006] Installation pipes are integrated into the framework before foaming and are bonded in a form-fitting and material-locking manner during foam expansion. Advantageous embodiments

[0007] In a preferred embodiment, the truss comprises a sill, a top plate, several posts, and at least one diagonal brace. The static bracing is provided essentially by the truss itself.

[0008] The rigid foam is preferably a reaction foam, in particular a two-component foam system, which expands and hardens within the closed wall element.

[0009] The sill and / or frame may have positioning elements, in particular pins, for aligning multiple wall elements. Description of the drawings Fig. Figure 1 shows an exemplary timber frame with integrated installation pipes in a single-sided exit design with a door opening. Fig. 2 shows the timber framing of the Fig. 1 with mounted inner and outer deck plates. Fig. Figure 3 shows a section through the foamed wall element made of Fig. 1. Fig. Figures 4 to 7 show truss constructions for different module variants, in detail: Fig. 4: Wall 3 meters, stiffening on both sides, full surface Fig. 5: Wall 3 meters stiffening on both sides, central window opening Fig. 6: Wall 6 meters, stiffening on both sides, full surface Fig. 7: Wall 6 meters, stiffening on both sides, window and door opening Example of implementation

[0010] A wall element, as in Fig. Figure 1 shows a load-bearing timber frame consisting of a sill (7), top plate (8), at least two posts (9), and at least one diagonal brace (6). Before the frame is closed, installation pipes (4) are positioned and fixed. An outer cover plate (2) and an inner cover plate (3) are then attached. Door and window openings can be created using crossbeams (10).

[0011] Two reactive foam components are then introduced into the framework. These form the rigid foam (5). The components expand within the wall element, fill all cavities and harden, creating a full-surface, material-bonded connection between the timber framework, cover panels and installation pipes.

Claims

[1] Wall element for the production of a thermally insulated building envelope, especially for modular timber construction, comprising - a load-bearing timber frame with a sill (7), a top plate (8), several posts (9) and at least one stiffening strut (6), - an outer deck plate (2), - an inner cover plate (3), - Installation pipes integrated into the timber frame (4), characterized by , that all cavities of the timber frame are filled with a hardening rigid foam, whereby the rigid foam connects and seals the components together in a materially bonded manner. [2] Wall element according to claim 1, characterized by , that the static stiffening is essentially provided by the timber frame with at least one diagonal brace (6). [3] Wall element according to one of the preceding claims, characterized by that the rigid foam is a reaction foam that expands and hardens within the wall element. [4] Wall element according to claim 3, characterized by that the expansion leads to a full-surface, material-bonded connection between the timber frame, cover plates and installation pipes. [5] Wall element according to claim 1, characterized by , that the outer decking panel (2) is replaced by a facade membrane. [6] Wall element according to one of the preceding claims, characterized by , that the installation pipes (4) are positioned and fixed before the rigid foam is applied.

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