DE202018005288U1 - Cavity brick to reduce heat radiation in summer on the top floor - Google Patents

Abstract

Roof tiles made of a waterproof or water-repellent material, characterized in that it contains at least one cavity (3).

Description

The invention of the hollow roof tile belongs to the subject of building physics.

Such a hollow brick serves to protect attic rooms from warming in summer and to keep them even better warm in winter.

Closed air volumes are the best insulation after closed vacuum rooms and are inexpensive. Common insulation materials therefore contain a lot of air in closed rooms, e.g. Foams.

A great deal of effort is being made today to insulate buildings in order to save heating costs and energy. Thermal insulation is usually understood to mean insulation against heat loss in winter. But good insulation is also important in summer (against external heat supply), especially in inhabited attics.

The present invention is intended to improve the thermal insulation of roof coverings.

The usual roof covering (clay or concrete tiles) with pitched roofs is a so-called warm roof. The roof tiles are single-shell. They are hung on the roof battens and are loosely connected with the tiles next to and overlapping. The rainwater is thus safely drained down over the roof surface. They only little insulate heat flows in both directions.

• 1 eine perspektivische Aufsicht auf drei neben einander liegende Hohlraumziegel;
• 2: eine auseinandergezogenen perspektivische Ansicht eines abgewandelten Hohlraumziegels, und
• 3: einen vertikalen Schnitt durch einen Abschnitt eines Satteldaches mit Hohlraumziegeln nach 2.

The invention is explained in more detail below with reference to the drawing. In this show:

• 1 a perspective view of three adjacent hollow bricks;
• 2nd : an exploded perspective view of a modified cavity brick, and
• 3rd : a vertical section through a section of a gable roof with cavity tiles 2nd .

First of all 3rd considered.
Roof battens D are attached to rafters S. There is thermal insulation between the latter and / or below 5 (Rock wool, plastic foam or similar) attached. Between the thermal insulation 5 and bricks Z. is a small air space which is connected to the outside air via some ventilation tiles (not shown) in order to lead the possibly occurring moisture (condensation water) to the outside.

When the sun is shining, the roof tiles heat up, giving off heat inside. Even good thermal insulation under the roof tiles, which is common today, cannot prevent the roof space from heating up more than the floors below. Such a roof is also called a warm roof.

In contrast to the warm roof, there is the so-called cold roof, which has a larger air space between the top of the building and the roof covering, from which the air heated by the solar radiation can escape, so that the space below does not heat up as much.

The drawing shows cavity tiles for the manufacture of such a cold roof.

A cavity brick comprises a (water-draining) lower brick part ( 1 ) in the known construction and dimension. Above it is an upper brick part that is shorter perpendicular to the direction of the slats, i.e. the longitudinal direction of the brick ( 2nd ) with the lower brick part ( 1 ) is mechanically or ceramically connected. The airspace ( 3rd ) in between (approx. 5-10 cm) is heated by the sun on the upper brick part. The heated air can pass through spaces ( 4th ) emerge between the upper brick parts and the lower brick part heats up much less. This keeps the roof space cooler.

This saves e.g. an air conditioner, at least it reduces the cooling capacity required by it. This hollow brick is also useful for winter, because the air layer between the upper and lower part of the brick insulates. This makes the upper brick part less warm and the snow remains on the roof and improves the thermal insulation.

Alternatively, the brick parts 1 and 2nd also be extruded together.

Again alternatively, the upper brick part can also consist of a dimensionally stable and weatherproof material other than clay, e.g. Made of sheet metal made of aluminum, of an aluminum alloy or of iron, which is preferably painted with a dark color or darkly stained or anodized.

2nd and 3rd show that side walls (W) of the upper brick part ( 2nd ) are so trapezoidal that the top of a roof covering made with them form a substantially continuous plane.

Claims (6)

Roof tiles made of a waterproof or water-repellent material, characterized in that it contains at least one cavity (3). Roof tiles after Claim 1 , characterized in that it has a lower brick part (1) and an upper brick part (3) which are fixedly or loosely connected to each other. Roof tiles after Claim 1 or 2nd , characterized in that the upper brick part (2) is shorter and / or narrower than the lower brick part, so that gaps (4) are formed in the roof covering, through which warm air can escape to the outside. Roof tiles after Claim 2 or 3rd , characterized in that the lateral walls (W) of the upper brick part (2) are trapezoidal in such a way that the top of a roof covering produced with them forms a substantially continuous plane. Roof covering using roof battens and roof tiles according to one of the Claims 1 to 5 , characterized in that they have additional thermal insulation (5) between the rafters (S) on the building side. Roof covering after Claim 5 , characterized in that the gaps run in the transverse direction of the bricks (Z), that is to say parallel to the direction of the slats (D).

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