Description

OBJECT OF THE INVENTION

The object of the present invention relates to an enclosure for fagades with climatising functions.

BACKGROUND OF THE INVENTION

At present, enclosures for fagades with climatising purposes, known as Trombe walls, are known to exist, which comprise an outer layer transparent to solar radiation and another, absorbent, inner layer or fagade element delimiting a thermal chamber or space between the two layers which can be communicated by its upper and lower end with the room to be climatised, and having distributing means at its upper end capable of directing the hot air generated in the chamber, ascending by convection, towards the interior of the room (heating) or towards the exterior (cooling), combined in the second case with a complementary entrance of cold air. These distributing means are also capable of simultaneously directing the air flow towards the interior and exterior, or remaining closed in both directions.

In the interior of the thermal space, or in its internal layer, elements favouring the uptake and storage of a greater amount of heat stemming from the sunlight can be included: for example, dark-coloured conductor or refractory material parts, deposits containing a volume of a liquid capable of storing heat, which can even be in communication with other volumes of liquid stored in reserve deposits in other locations.

These configurations, applied to one or more floors in a building, reduce the energy requirements for climatisation thereof, and can even implement centralized systems to govern their different elements: air flow distributors, fans to accelerate the passage of air through the chamber, etc.

This type of enclosure, in addition to its contribution to climatisation, also lowers transmittance (heat exchange with the exterior) with respect to traditional enclosures, with more favourable values when the outer layer consists of double glazing.

However, we are aware of the difficulty of regulating the effectiveness of climatisation, a drawback that is accentuated in continental climates, which exhibit considerable variations in temperature.

The SAV window system is also known, which consists of two separate glass panes wherebetween the corresponding circulation chamber is defined and wherein a Venetian blind is disposed, in addition to upper and lower openings to allow the circulation of air through said window, in a similar manner to that of the Trombe wall but implemented in windows. Venetian blinds are normally unfolded in warm seasons to avoid the incidence of direct sunlight on the inner pane, due to which the air that passes through the blind is heated and the heat extraction required is not achieved.

DESCRIPTION OF THE INVENTION

The constitution of the enclosure for fagades with climatising functions of the invention improves the regulation of climatisation and, in general, lowers enclosure transmittance value.

In accordance with the invention, the enclosure comprises a transparent double-glazed outer layer and another transparent inner layer, wherebetween a ventilated chamber is defined by means of an upper access and lower access.

In order to regulate air flow circulation, fans may be included, which can be reversible or not, which allows acceleration of the air flow in order to increase performance, or creation of ventilation flows by suction or ejection.

The main enhancement comprised by the invention consists in disposing an adjustable solar control element between the two panes of the outer layer, such as Venetian blind-type directional shades or slats.

Therefore, this solar control element is not in direct contact with the air that fills the chamber, so that when said air is heated as a result of solar radiation it does not heat further the air circulating within said chamber.

The invention envisages that the enclosure can be prefabricated in modules, which may be complete, including all the enclosure elements, or separate modules that include different parts of the enclosure.

Both in the case of the modular enclosure solution and the solution wherein the enclosure is composed of several independent parts, it has been envisaged that the enclosure will have a passage zone connected to the air conditioning system of the building, normally enabled in the upper part thereof, which will allow reduction of thermal jump, thereby enhancing energy efficiency in the building.

On the other hand, the possible inclusion has been envisaged, in combination with the mobile elements of the enclosure, such as solar control, traps and fans, of wireless detectors that are integrated in and form part of the building's domotic system, which allow monitoring of environmental conditions and will determine the activation of actuators that will act on the control mechanisms of the position of, for example, solar control elements, in addition to acting on the fan engines.

DESCRIPTION OF THE DRAWINGS

For the purpose of complementing this description and helping to better understand the characteristics of the invention, a set of drawings in accordance with a preferred example of practical embodiment thereof has been included as an integral part of this description, in which the following have been represented in an illustrative and non-limiting manner:

Figures 1 and 2 show two sectional views of en enclosure for fagades wherein the solar control element consisting of a roll-up blind in its retracted and extended positions, respectively, can be observed.

Figures 3 and 4 show two sectional views of a modular enclosure for fagades wherein the solar control element consisting of slats in their opened and closed positions, respectively, can be observed.

PREFERRED EMBODIMENT OF THE INVENTION

The enclosure (1 ) for fagades of the invention comprises a transparent double-glazed outer layer (2) formed of two panes (2a, 2b) and a second transparent single-glazed inner layer (3), wherebetween a chamber (4) is defined wherethrough an air flow contributing to the climatisation of the room (5) located in the interior of the enclosure circulates.

Said chamber (4) has an outer upper access (8) and an inner lower access (7) with their corresponding traps (15) that communicate the interior room (5) with the exterior (6), for selective exit of the air flow.

The invention envisages the installation of an adjustable solar control element (12, 13) between the two panes (2a, 2b), which typically consists of directional slats (12), as can be observed in figures 3 and 4, or preferably of shades (13), normally roll-up, as can be observed in figures 1 and 2, which allow additional regulations to be made. Actuation of the solar control element (12, 13) can be manual or automated.

If the shades (13) are retracted or the slats (12) opened, as represented in figures 1 and 3, this situation normally corresponds to the need to take advantage of sunlight. The solar control element (12, 13) disposed on the outer layer (2) does not interfere with this air flow and therefore there is no heat exchange therewith.

If the shades (13) are extended or the slats (13) closed, as represented in figures 2 and 4, this situation corresponds to the need to avoid the passage of sunlight. The air circulating through the chamber (4) is not heated by the solar control element (12, 13), as happened in other solutions, as said solar control element (12, 13) is not located inside the chamber, but rather in the outer layer (2).

Optionally, it is envisaged that, as in figure ^" ! , the enclosure will include fans (14) that favour air circulation.

Likewise, the invention envisages the optional modular constitution of the enclosure (1 ), which facilitates assembly thereof and lowers costs. For example, in figures 3 and 4 we can observe the enclosure in its modular configuration, which groups together the outer (2) and inner (3) layers, the two accesses (7, 8) and their traps (15), mounted on a structural frame (18).