ROOF TILE WITH A PHOTOVOLTAIC CELL

Abstract

The invention relates to construction, in particular to a special tile, which provides thermal and heat insulation, not harmful to the environment, accumulates solar energy and generates electrical energy, and which can be used in the construction of roof coverings for roofs of industrial and public buildings and structures. A roof tile comprises an upper protective layer, under which a photovoltaic cell is mounted, wherein the upper protective layer is formed from polyethylene terephthalate, and the following are arranged consecutively under the photovoltaic cell: a heat-insulating and sound-insulating layer made from polyurethane foam, a cardboard layer, a technical layer formed from high-pressure polyethylene and a lower protective layer formed from polyethylene terephthalate with a metallized base. The metallized base is formed from aluminium. The upper protective layer is made transparent to allow solar energy to pass to the photovoltaic cell.

Claims

1. A roof tile comprising an upper protective layer under which a photocell is mounted, a heat and sound insulating layer made of a polyurethane foam, a cardboard layer, a technical layer made of high-density polyethylene and a lower protective layer made of polyethylene terephthalate with a metallized base, wherein the heat and sound insulation layer, the cardboard layer, the technical layer and the lower protective layer are sequentially located under the photocell, and the upper protective layer is made of polyethylene terephthalate.

2. The roofing tile according to claim 1, wherein the metallized base is made of aluminum.

3. The roofing tile according to claim 1, wherein the upper protective layer is made transparent to allow solar energy to pass to the photocell.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 shows a sectional view of a multi-layered roof tile-piece with a photocell.

[0012] FIG. 2 shows a general view of the tile with a photocell.

[0013] The following items are presented in the Figures:

[0014] 1—metallized base;

[0015] 2—lower protective layer made of polyethylene terephthalate;

[0016] 3—technical layer made of high-density polyethylene;

[0017] 4—cardboard layer;

[0018] 5—heat and sound insulation inner layer made of polyurethane foam;

[0019] 6—photocell;

[0020] 7—upper protective layer made of polyethylene terephthalate.

DETAILED DESCRIPTION OF THE INVENTION

[0021] In one embodiment the roofing tile contains a lower protective layer (2) made of polyethylene terephthalate with a metallized base (1) made of aluminum. The lower protective layer (2), serving also as a substrate for metallization, protects against mechanical damage, and the metallized base (1) applied on it reflects infrared radiation back inside the house (premises).

[0022] The technical layer (3) made of high-density polyethylene is laid on the lower protective layer, and cardboard layer (4) is laid-out on it. Heat and sound insulating inner layer made of polyurethane foam (5) is laid-out over the cardboard layer (4). Cardboard layer (4) absorbs the two-component polyurethane foam, thereby increasing adhesion to the high-density polyethylene layer (3), which in turn bonds together the cardboard layer and the lower protective layer (2).

[0023] A photocell (6) with an upper protective layer (7) of polyethylene terephthalate is placed on top of the heat and sound insulating inner layer (5). The upper protective layer (7) is made transparent to allow solar energy to pass to the photocell (6). Any known photoconverters (solar panels) can be used as a photocell. Note that the layer (7) is resistant to corrosion, mold and fungus do not grow on it, protects from external mechanical impacts, thereby increasing thermal insulation and soundproof properties. At the same time, a protective layer made of polyethylene terephthalate makes it possible to give the roofing a classical look of a piece of roofing material—tiles.

[0024] Use of non-hygroscopic heat-insulating material of polyurethane foam in the form of heat and sound insulation layer (5), which at the time of foaming and polymerization has strong adhesive properties, allows reliable connecting (bonding) the upper (7) and lower (2) protective layers of polyethylene terephthalate, strengthened by technical (3) and cardboard (4) layers.

[0025] Polymerized polyurethane foam, filling the entire internal volume of the product, provides rigidity to the resulting structure, which allows the roofing to withstand high loads (for example, when walking on the roof).

[0026] The inner layer (5) of two-component polyurethane foam assures low thermal conductivity of the product, high noise absorption, as well as filling the entire internal volume of the product, increasing its rigidity, thereby protecting the photocell.