DE9003490U1 - Room-defining coffered ceiling - Google Patents

Description

Kalmar Licht- und Deckensysteme GmbH, room-delimiting cassette ceiling ./*

TECHNICAL AREA

The invention relates to a room-delimiting cassette ceiling. r 10 Such ceilings are designed as intermediate ceilings or as suspended ceilings. The cassette ceiling has several metal cassettes perforated on its underside facing the room, each cassette having the following structure when viewed from its underside: Firstly, there is an intermediate layer on which a pipe system is attached through which a cooling or heating medium can flow. Above this pipe system there is a thermal insulation layer. In their design as intermediate ceilings, such ceilings can be attached directly to the structurally existing ceiling and in their design as suspended ceilings, such ceilings have a much greater distance from the structurally existing ceiling than the intermediate ceiling.

Such ceilings, which are particularly popular in offices, administration rooms and conference rooms, must fulfill three functions. Firstly, such ceilings are used as climate ceilings, in which the temperature of the liquid flowing through the pipe system influences the room temperature of the room in question. Such ceilings are also used to relieve the load on existing air conditioning systems. Furthermore, such ceilings should have good sound-absorbing properties and at the same time have a good remission effect with regard to incident light rays.

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KALM-I3gDE
07 Aug 1990

STATE OF THE ART

In the case of cassette ceilings or cassettes that separate rooms, it is known to arrange a mineral wool fleece as an intermediate layer. It was found that the loosely laid mineral wool tiles tend to form waves. This results in the reflectance level falling drastically. In addition, such a ceiling has an unfavourable appearance. The wave formation of the mineral wool tile also means that the individual channels of the pipe system are at different distances from the underside of the cassette, which means that the temperature gradient across the surface of the underside can fluctuate relatively strongly. These locally different temperatures on the underside of the cassette increase the risk of so-called streaking, i.e. that the degree of soiling of the ceiling over time, which is also constant with a constant temperature gradient across the surface of the ceiling, also takes on different values as a result of the locally different temperature profile, so that stripes can form that are visible from inside the room and correspond to the course of the respective pipe channel.

The formation of waves in the mineral wool tile can be counteracted by gluing the tile into the metal cassette. However, this requires an additional production step, which has a correspondingly negative effect on the economic use of such ceilings.

DESCRIPTION OF THE INVENTION

Based on this previously known state of the art, the invention is based on the task of specifying a room-defining and visually appealing coffered ceiling that can be used in an optimal way as a cooling or heating device, which also has very good sound-absorbing properties and which has a high remission effect.

KALM-i3gDE 07 Aug 1990

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sits.

This invention is given by the features of the main claim in the room-delimiting cassette ceiling of the type mentioned at the beginning. The invention is therefore characterized in that the intermediate layer is designed as a glass fiber mat. By arranging a glass fiber mat, a remission effect of up to 90 percent higher with regard to incident light rays can be achieved compared to the known ceiling. At the same time, incident sound waves can pass through the glass fiber mat, which results in a very good sound absorption capacity of such a ceiling.

The flat glass fiber mat preferably has a thickness of less than 0.8 mm, in particular approximately 0.5 mm. The pipe system is made in particular from pipe mats that contain plastic pipes approximately 2 mm thick. Depending on whether a cooling or heating liquid is pumped through this pipe system, the pipe system radiates cold or heat. Due to the very thin wall and thickness of the glass fiber mat, the cassette ceiling according to the invention shows practically the same temperature behavior with regard to the heat transfer from the cooling or heating pipe to the underside as with a heating or cooling pipe placed directly on top. At the same time, a relatively close spacing between the individual pipes of the pipe system (approx. 1.5 cm) in conjunction with the inserted glass fiber mat achieves a relatively constant temperature profile across the underside of the ceiling, which further reduces the risk of the streaking described in the prior art.

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In a preferred embodiment of the invention, the glass fiber mat is simply inserted loosely. This eliminates the need for the gluing process. Since the loosely inserted glass fiber mat does not tend to form waves, the above-mentioned advantages are retained. In view of its diverse

KALM-I3gDE
07 Aug 1990

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Advantages: the blanket according to the invention proves to be a very economical blanket.

Further advantageous embodiments of the invention result from the features further listed in the claims and from the exemplary embodiments given below.

BRIEF DESCRIPTION OF DRAWING 10

/- The invention is described and explained in more detail below using the embodiments shown in the drawing. They show:

Fig. 1 is a schematic sectional view through a suspended coffered ceiling according to the invention and

Fig. 2 is a sectional view through two sheet metal cassettes of a suspended ceiling according to the invention.

WAYS OF IMPLEMENTING THE INVENTION

The suspended cassette ceiling 10 shown in Fig. 1 is suspended from a reinforced concrete ceiling 18 via a substructure 12, 14, 16.

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U-rails 14 are connected to height-adjustable hangers 12, which are aligned parallel to the concrete ceiling 18. U-rails 16 are attached to these U-rails 14 at right angles to the rails 14. Metal cassettes 20 lying next to one another are connected to the U-rails 16 at right angles to them. The underside of the cassettes facing the room is perforated. Fig. 1 is a schematic representation, which serves as an overview. The more detailed description and representation of the known fastening structures of the

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KALM-13gDE
07 Aug 1990

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The individual parts are not connected to one another.

A sheet metal cassette 22 (Fig. 2) attached to U-profiles 16 has a U-shaped cross-section, whereby the underside of the sheet metal cassette facing the inside of the room has small openings 24 in a relatively narrow grid dimension and the free edges of the U-shaped cross-section are folded over to a relatively short area parallel to the underside.

Inside the U-shaped cross-section of the sheet metal cassette 22, the following layered structure is present when viewed from the underside: First, a glass fiber mat 26 is inserted, on which heating or cooling pipes of a pipe system are arranged. In this example, the glass fiber mat 26 has a thickness of approx. 0.8 mm. The heating or cooling pipes are laid next to each other at a distance of approx. 1.5 cm and have a diameter of approx. 2 cm. A thermal insulation layer 30 is arranged on the heating or cooling pipes 28, which is intended to prevent the amount of heat (cold) emitted by the heating or cooling system from migrating upwards, i.e. into the space between the concrete ceiling 18 and the suspended ceiling 10.

The heating or cooling pipes 28 of the pipe system are connected to the rest of the pipe system via supply channels (not shown), which can run, for example, transversely to the cassettes 22, so that the flow of the heating or cooling medium is possible without any problems.

It is also possible to attach the U-rails 16 directly to the reinforced concrete ceiling 18, i.e. to design the cassette ceiling as a suspended ceiling if a large gap between the reinforced concrete ceiling 18 and the cassettes is not desired.

KALM-13gDE 23 March 1990

The air flow can migrate through the gap between the concrete ceiling 18 and the suspended ceiling 10.

The heating or cooling pipes 28 of the pipe system are connected to the rest of the pipe system via supply channels (not shown), which can run, for example, transversely to the cassettes 22, so that the flow of the heating or cooling medium is possible without any problems.

It is also possible to fasten the U-rails 16 directly to the reinforced concrete ceiling 18, ie to design the cassette ceiling as a suspended ceiling, if a large gap between the reinforced concrete ceiling 18 and the cassettes is not desired.

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Claims (1)

KALM-13gDE
07 Aug 1990 -1- EXPECTATIONS 01) Room-delimiting cassette ceiling (10) as a false ceiling or suspended ceiling consisting of several cassettes (20, 22) perforated on their underside facing the room, whereby each cassette (20, 22) has the following layered structure from bottom to top: - an intermediate layer, - a pipe system (28) through which a cooling or heating medium can flow and which is arranged on the intermediate layer and - a thermal insulation layer (30) arranged above the pipe system, characterized in that the intermediate layer is designed as a flat glass fiber mat (30). 02) Room-defining cassette ceiling according to claim 1, characterized in that the glass fiber mat (30) has a thickness of less than 0.8 mm, in particular approximately 0.5 mm. 03) Room-defining cassette ceiling according to claim 1 or 2, characterized in that the surface dimensions of the glass fiber mat (30) of each cassette correspond approximately to the dimensions of the underside of a cassette. 04) Room-defining cassette ceiling according to one of the preceding claims, characterized in that the glass fiber mat (30) is loosely inserted into each cassette (20, 22). KALM-13gDE 07 Aug 1990 -2- 05) Room-delimiting ceiling according to one of claims 1 to 4, characterized in that the pipe system (28) has a so-called capillary tube mat made of plastic and contains heating or cooling pipes of approximately 5-2 mm thickness.