Wall box and ventilation system comprising a wall box

Abstract

A wall box for a ventilation system comprises a housing delimiting an interior, in which a through-flow region is defined. In the interior is arranged at least one flap arrangement having a flap arranged on a suspension mounting. For an area A of a cross section of the interior perpendicular to a flow direction,A / K>2 / πr,wherein K indicates an area of an enveloping circle with smallest possible radius, which circle completely conceals the cross section of the interior. The flap of the at least one flap arrangement has at least in an open position a flap contour which in regions adjacent to a pivot axis is adapted to a cross-sectional contour of the interior in the respective region adjacent to the pivot axis.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of German Patent Application Serial No. DE 10 2018 205 935.7 filed on Apr. 18, 2018, pursuant to 35 U.S.C. 119(a)-(d), the content of which is incorporated herein by reference in its entirety as if fully set forth herein.FIELD OF THE INVENTION[0002]The invention relates to a wall box for a ventilation system and to a ventilation system comprising a wall box. The invention further relates to the arrangement of a wall box in an external wall of a building.BACKGROUND OF THE INVENTION[0003]Wall boxes are used in particular in the ventilation of kitchens by means of an extractor, or in controlled domestic ventilation. A wall box is known, for instance, from DE 10 2014 113 210 A1. Extractors for the extraction of cooking fumes are described, for example, in DE 20 2007 000 610 U1 and DE 20 2011 005 698 U1.SUMMARY OF THE INVENTION[0004]One object of the invention is to improve a wall box.[0005]This object is a...

AI Technical Summary

Benefits of technology

The invention is about improving the design of a flap by combining its shape with the shape of the space it's stored in. This design prevents liquids from accumulating in the space, which could cause damage or mold growth. The invention also includes a drain in the floor of the space that allows liquids to flow out. The floor can be inclined to help the liquids flow out, and the drain can be sealed to keep the space tightly closed when the flap is closed. Overall, this design improves the functionality and longevity of the flap and prevents harmful liquids from accumulating in the space.

Problems solved by technology

According to the invention, it has been recognized that a reduction of the flow resistance which the wall box, in the open position of the flap of the at least one flap arrangement, offers to an air stream, normally causes a disadvantageous enlargement of the external dimensions of the wall box.

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