EP2519782A1

EP2519782A1 - Ceiling or wall element with a heating or cooling register

Info

Publication number: EP2519782A1
Application number: EP10803101A
Authority: EP
Inventors: Werner Guckert; Christian Kipfelsberger; Siegfried Rauch; Thomas Heindl; Robert Michels
Original assignee: SGL Carbon SE
Current assignee: SGL Carbon SE
Priority date: 2009-12-31
Filing date: 2010-12-31
Publication date: 2012-11-07
Also published as: WO2011080337A1; SG181988A1; CA2786150A1; US20130168040A1; CN102792101A

Abstract

The invention relates to a ceiling or wall element (10) for fixing to a ceiling (5) or a wall. Said ceiling or wall element (10) is provided with a frame (2) comprising a base plate (2a) which can be fixed to the ceiling (5) and/or the wall, in which a heating or cooling register (9) is arranged. According to the invention, a non-woven fabric (3) and a perforated graphite film (1) are arranged between the base plate (2a) of frame (2) and the heating or cooling register (9).

Description

Ceiling or wall element with a heating or cooling coil

The invention relates to a ceiling or wall element according to the preamble of claim 1 and a ceiling or wall element according to the preamble of claim 14 and the use of a composite material consisting of a non-woven and a graphite foil as a ceiling or wall element. The invention further relates to a thermally activatable concrete wall or concrete floor to which such ceiling or wall elements are attached.

Ceiling or wall elements are already known from the prior art, which have a mountable on the ceiling or wall frame with a bottom plate and arranged in the frame heating or cooling coil. From DE 20 2007 010 215 U1, for example, a wall or ceiling cladding with a heating or cooling coil in the form of pipes is known, which are attached to Wärmeleitprofilen. The Wärmeleitprofilen lie on the back of a cladding panels formed by cladding panels. The cladding panels are attached to support rails with U-shaped cross-section. The support rails and the cladding panels attached thereto thus form a mountable to a ceiling or wall frame with a floor formed by the cladding panels. The Wärmeleitprofile are arranged in the interior of this frame and are applied to the cladding panels. The

Wärmeleitprofile and the attached pipes form the heating or cooling coil. To make a good Wärmeleitkontakt between the pipes and the cladding surface, are transverse to the elongated

Wärmeleitprofilen hold-down arranged which under spring tension at least two adjacent Wärmeleitprofile on the

Keep cladding panel in place.

The Wärmeleitprofile have on their back on an approximately semi-circular approach, in which the pipes are arranged. The pipelines are - depending on the application as a heating or cooling line - from a heating or cooling medium, such as. flows through hot or cold water. The

Wärmeleitprofile are usually made of metal, such as aluminum manufactured. The cladding panels may be, for example

Plasterboard trade.

In such wall or ceiling panels, the efficiency of heat or cold transmission from the wall or ceiling panels to the room is very low. This is due to the gaps between the

juxtaposed Wärmeleitprofilen. These spaces act as an insulating layer and prevent a uniform spread of the

Heat flow across the surface of the wall or ceiling panels facing the room. On the other hand, the heat or cold transmission from the heating or cooling lines to the cladding panels is very inefficient, because it is the cladding panels to poor heat conductors.

On this basis, the invention is based on the object

generic ceiling or wall element so on to form that more efficient heat transfer between the heating or cooling coil and the space to be heated or cooled can be ensured. In addition, the ceiling or wall element should also have a good sound absorption.

This object is achieved with a ceiling or wall element with the features of claim 1. The object can also be achieved in the presence of a thermally activated concrete wall or concrete ceiling with a ceiling or wall element with the features of claim 2. Preferred embodiments of these ceiling or wall elements can be found in claims 3 to 18.

In a ceiling or wall element, which has a mountable to a ceiling or wall frame with a bottom in which a heating or cooling coil is arranged, the object underlying the invention is achieved in that between the bottom of the frame and the heating - or cooling register a fleece and a perforated graphite foil are arranged. In which Fleece is preferably a carbon fiber fleece. However, it may also be a glass fiber fleece. The carbon fiber fleece has a higher thermal conductivity than a glass fiber fleece, but is also more expensive. The fleece causes a good sound absorption of the ceiling or wall element. The graphite foil is preferably a sheet of expanded graphite, which is provided with a hole perforation. The perforated graphite foil provides good thermal contact between the heating or cooling coil and the

Base plate of the ceiling or wall element safely. The bottom of the ceiling or wall element is preferably made of a thermally conductive material, in particular of a metal sheet or a graphite-modified plate, such as a graphite-modified plasterboard. Preferably, the frame is formed as a cassette, wherein at least the bottom is made of a perforated or provided with a perforation metal sheet. The perforation or the perforation in the ground ensures good sound absorption in conjunction with the nonwoven resting on the floor inside the frame.

The nonwoven and the perforated graphite foil arranged thereon are preferably a composite which can be produced by calendering. Such a composite can be particularly useful from a

Carbon fiber fleece and a graphite foil made of expanded graphite. The production of expanded graphite (so-called graphite expandate) is known, inter alia, from US Pat. No. 3,404,061. For the production of expanded graphite graphite intercalation compounds or graphite salts such as graphite hydrogen sulfate or graphite nitrate are shock-heated. The volume of the graphite particles increases by a factor of approximately 200 to 400 and at the same time the bulk density drops to values of 2 to 20 g / l. The resulting graphite expanse consists of worm-shaped or accordion-shaped aggregates. If fully expanded graphite is compacted under the direction of a pressure, the layer planes of the graphite are arranged preferably perpendicular to the direction of action of the pressure, the individual aggregates becoming entangled with one another. In this way, can be produced without binder additive self-supporting fabrics such as sheets, plates or moldings of expanded graphite. Thin films (with thicknesses in the range of 50 μηη to 3 mm) can be produced by pressing or rolling of sheets of expanded graphite. During calendering of an expanded graphite foil produced in this way with a carbon fiber fleece, the latter becomes entangled

Carbon particles of the nonwoven surface and the surface of the graphite foil

with each other, so that a solid and non-detachable bond between the

Carbon fiber fleece and the graphite foil is formed.

A perforation of the graphite foil increases its flexibility and thereby facilitates the handling of the film. Since graphite is a brittle material, there are thin films to handle

expanded graphite the risk that the film breaks or breaks. This danger can be significantly reduced by the perforation of the graphite foil.

The heating or cooling coil may be heating or cooling lines mounted on heat transfer profiles. In order to ensure a good thermal contact between the heating or cooling register and the bottom of the frame, the base is in thermal contact with the heat-conducting profiles via the composite of the nonwoven and the perforated graphite foil.

The heating or cooling coil may also be a lightweight graphite sheet of expanded graphite in which heating or cooling pipes are embedded. In this embodiment, the surface of the graphite lightweight board is preferably in thermal contact with the perforated graphite foil over its entire major surface. In this way, a good thermal contact between the heating or cooling pipes and the bottom of the frame is produced via the highly thermally conductive composite of the perforated graphite foil and the nonwoven. The guided in the heating or cooling lines heat (or cold) can therefore very efficient and uniform over the entire surface of the Deckenbzw. Wall element in the space in which the ceiling or wall element is arranged can be achieved. Preference is given to the graphite foil

opposite surface of the graphite lightweight board over its entire major surface in thermal contact with the surface of the wall or the ceiling to which the wall or ceiling element is attached. Because of this Thermal contact, the heat coming from the heating or cooling pipes can be partially discharged through the graphite lightweight board to the wall or ceiling, so that the mass of the wall or ceiling can serve as a heat storage for a delayed heat release.

From the state of the art so-called concrete core activation systems are known for air conditioning of rooms with concrete ceilings and / or walls. In these systems, pipelines carrying heating or cooling media are installed in, under or on the concrete floor or concrete wall. By storing the heating or cooling energy in the concrete mass of the walls or ceilings and a time-delayed release of the stored heating or cooling energy, an energy-efficient air conditioning of the rooms can be achieved. For example, in the post, a cooling fluid such as e.g. Water, cooled and passed through the pipes in a concrete core activated ceiling or wall, which cools the ceiling or the wall slowly. The cooling energy thus stored in the concrete floor or the concrete wall can then during the day,

especially in warm summer months, are slowly released into the room to lower the room temperature.

For covering such thermally activated concrete ceilings or walls, the invention provides a ceiling or wall element which has a frame which can be fastened to the wall or the ceiling with a floor, wherein between the bottom of the frame and the wall or the ceiling a fleece and a perforated graphite foil are arranged. In this exemplary example, preferably between the graphite foil and the wall or ceiling, a lightweight panel made of expanded graphite is arranged.

In this embodiment of the invention, the web provides a good

Sound absorption of the ceiling or wall element safely. About the perforated graphite foil and between the graphite foil and the wall or

Ceiling surface arranged graphite lightweight board is a good thermal contact between the thermally activated wall or ceiling and the floor of the frame. This represents efficient heat transfer between the thermally activatable wall or ceiling and the room.

The invention is based on embodiments below

Referring to the accompanying drawings explained in more detail. The drawings show:

Figure 1: Schematic representation of a first embodiment of a

ceiling or wall element according to the invention with a

Frame in which a heating or cooling coil is arranged;

Figure 2: Schematic representation of an alternative embodiment of a ceiling or wall element according to the invention with a

Frame and a heating or cooling register disposed therein;

Figure 3: Schematic representation of a thermally activated

Ceiling or wall mounted ceiling or wall element.

In the embodiments of the invention described below, the use of ceiling or wall elements according to the invention for

Attachment to a extending in a horizontal plane ceiling 5 shown. It is therefore spoken each of ceiling elements. However, the ceiling or wall elements according to the invention can also be used in a corresponding manner for attachment to a vertical wall. In the drawings illustrated embodiments are the same or corresponding parts with the same reference numerals.

As far as thermally activated concrete ceilings or walls is concerned, this is understood to mean concrete floors or walls in which pipelines are laid for the passage of a heating or cooling medium. These pipes are used for thermal activation of the ceiling or the wall.

1 shows a first embodiment of an inventive

Ceiling element 10 shown for attachment to a ceiling, wherein the

Ceiling element 10 has a fastened to a ceiling 5 frame 2. The frame 2 comprises a bottom formed by a bottom plate 2a and disposed thereon or integrally formed with the bottom plate 2a

Side walls 2b. At the upper edge of the side walls 2b is in each case a

Mounting flange 2c formed over which the frame 2 attached to the ceiling, in particular can be screwed. The frame 2 is preferably cassette-shaped with four circumferentially arranged around the bottom plate 2a

Side walls 2b formed. The frame 2 is preferably made of metal,

in particular made of a metal sheet. The bottom plate 2a has a perforation. The holes of the perforation in the bottom plate 2a ensure that sound waves can penetrate into the frame 2 and can be damped there.

In the cassette-shaped frame 2, a heating or cooling coil 9 is arranged. In the embodiment shown in Figure 1 includes the heating or

Cooling register 9 a plurality of side by side and mutually parallel fastening profiles 1 1, which are strip-shaped and made of a

thermally conductive material, in particular a metal, are made. Preferably, the fastening profiles 1 1 are aluminum profiles. On the mounting profiles 1 1 heating or cooling lines 12 (hereinafter referred to as pipes) attached. The pipes 12 may, for example, positively or non-positively engaged in semi-circular receiving lugs on the top of the mounting profiles 1 1. However, other attachment possibilities are conceivable, such as e.g. an attachment via pipe clamps or

like.

The fastening profiles 1 1 are arranged on a perforated graphite foil 1 under thermal contact with the graphite foil 1. Suitably, the underside of each fastening profile 1 1 is glued to the graphite foil 1 via a thermally conductive adhesive. Between the perforated graphite foil 1 and the

Inner surface of the bottom plate 2a, a non-woven 3 is arranged. The fleece 3 may be a glass fiber fleece or preferably a carbon fiber fleece. The non-woven 3 is bonded to the inner surface of the bottom plate 2a by means of a thermally conductive adhesive. Suitably, the nonwoven 3 and the perforated graphite foil 1 is a composite material. Particularly suitable is a by calendering

produced composite of a carbon fiber fleece 3 and the perforated

Graphite foil 1.

The graphite foil 1 is expediently a thin foil of expanded graphite with a hole perforation. A hole proportion of? % to ? % ensures good handleability of the perforated graphite foil 1 and

prevents breakage or cracking of the graphite foil.

FIG. 2 shows a further exemplary embodiment of a ceiling or wall element according to the invention which has a heating or cooling register 9 arranged in the frame 2. Unlike the one shown in FIG

Embodiment, the heating or cooling coil 9 is here by a

Lightweight panel 13 formed of expanded graphite, in the heating or

Cooling lines 12 are embedded. The underside of the lightweight board 13 is in thermal contact with the surface of the perforated graphite foil. 1 Between the perforated graphite foil 1 and the bottom plate 2a of the frame 2, in turn, a fleece, in particular a glass fiber or a carbon fiber fleece is arranged. As in the embodiment of Figure 1, it is useful in the nonwoven 3 and the perforated graphite foil 1 to a non-detachable composite of a carbon fiber fleece and perforated with a hole

provided expanded graphite foil. To get the best possible

To ensure thermal contact between the top 15 of the graphite lightweight board 13 and the surface 14 of the ceiling 5, the top 15 of the graphite lightweight board 13 is glued to the ceiling surface 14 with a thermal adhesive 4.

In both embodiments, the nonwoven expediently has a thickness of 50 μιτι to 3 mm and the thickness of the perforated graphite foil is preferably between 200 μιτι and 3 mm. FIG. 3 shows a ceiling element 10 fastened to a thermally activatable concrete ceiling 5. Run in the concrete ceiling pipes 7 through which a heating or cooling medium can be passed for the thermal activation of the ceiling 5. The ceiling element 10 has a frame 2, which - as in the two preceding embodiments - a bottom plate 2a and at least two side walls 2b. Suitably, the frame 2 is cassette-shaped as in the two preceding embodiments with a bottom plate 2a and four circumferential side walls 2b. The frame 2 is made of a sheet metal and the bottom plate 2a has a perforation, which ensures that sound waves enter the frame interior and can be absorbed there.

Inside the cassette-shaped frame 2 is again on the

Base plate 2a lying there and preferably adhered web 3 and thereon a perforated graphite foil 1 is arranged. The fleece 3 and the perforated graphite foil 1 are expediently once again a composite of a carbon fiber fleece and a foil produced by calendering

expanded graphite. On the graphite foil 1, a lightweight board 13 made of expanded graphite is arranged in surface and thermal contact therewith.

For fastening the ceiling element 10 to the thermally activated

Concrete ceiling 5, the frame 2 is fixed in a known manner to the surface 14 of the ceiling 5, for example by screwing. In order to ensure the best possible thermal contact between the upper side 15 of the graphite lightweight board 13 and the surface 14 of the ceiling 5, the upper side 15 of the graphite lightweight board 13 is glued to the ceiling surface 14 with a thermally conductive adhesive 4. However, the use of an adhesive can also be dispensed with. In particular, it is possible to dispense with the use of an adhesive if the surface 15 of the graphite lightweight board 13 projects beyond the upper edge of the side walls 2 b of the frame 2 when not yet mounted. Then, namely when screwing the frame 2 on the ceiling surface 14, the lightweight board 13 from the compressible graphite slightly compressed. This ensures a good and full-surface thermal contact between the upper side 15 of the graphite lightweight board 13 and the ceiling surface 14, wherein by squeezing even slight bumps in the ceiling surface 14 can be compensated.

The composite material used in the embodiments of Figures 1 to 3 consisting of a nonwoven 3 and connected to the nonwoven 3 graphite foil 1 can also be attached without a supporting frame as a ceiling or wall element 10 directly to a ceiling 5 or a wall. Here, the composite material is bonded via a thermally conductive adhesive to the ceiling 5 and the wall, preferably the thermally conductive graphite foil 1 is glued to the surface of the ceiling 5 and the wall over the entire surface over the entire surface of the ceiling or Wand to produce a good heat conducting coupling. This arrangement ensures a fast one hand

Heat exchange between the room and the ceiling or wall, whereby the mass of the ceiling or wall (which, for example, is designed as a concrete ceiling or wall) can be used as a heat storage, of which the

stored heat can be released back into the room with a time delay. On the other hand, the fleece 3 of the composite material ensures good sound absorption, so that the ceiling or ceiling formed from the composite material

Wall element 10 can also serve as a sound-absorbing acoustic element.

As in the case of the material composite used in the exemplary embodiments of FIGS. 1 to 3, consisting of the fleece 3 and one with the fleece 3

connected graphite foil 1, the graphite foil 1 is preferably perforated and expediently has a perforation hole with a hole content of more than 5% per unit area. The fleece (3) is preferably a

Carbon fiber fleece, which has been connected by calendering with the graphite foil (1).

Claims

claims

1 .Decken- or wall element (10) for attachment to a ceiling (5) or a wall, wherein the ceiling or wall element (10) via a on the ceiling (5) or the wall mountable frame (2) with a r

Base plate (2 a) has, in which a heating or cooling coil (9) is arranged, characterized in that between the bottom plate (2 a) of the frame (2) and the heating or cooling coil (9) a fleece (3) and a perforated graphite foil (1) are arranged.

2. Ceiling or wall element (10) for attachment to a wall or ceiling

(5), wherein the ceiling or wall element (10) has a frame (2) which can be fastened to the wall or the ceiling (5) and has a bottom (2a), characterized in that on the bottom (2a) of the frame (2) a fleece (3) and a graphite foil (1) are arranged.

3. ceiling or wall element (10) according to claim 1 or 2, characterized

characterized in that the graphite foil (1) is perforated.

4. ceiling or wall element according to claim 1 or 2, characterized

in that the graphite foil (1) is a sheet of expanded graphite with a hole perforation.

5. ceiling or wall element according to claim 3 or 42, characterized

characterized in that the perforated graphite foil (1) has a hole proportion of more than? 205% per unit area.

6. ceiling or wall element according to one of the preceding claims, characterized in that the frame is made of a thermally conductive material, in particular of a metal sheet or a graphite-modified composite element, such as a plasterboard plate.

7. ceiling or wall element according to one of the preceding claims, characterized in that the frame is designed as a cassette (2) which is open on one side.

8. ceiling or wall element according to one of the preceding claims, characterized in that the perforated graphite foil (1) is firmly connected to the fleece (3).

9. ceiling or wall element according to one of the preceding claims, characterized in that it is at the nonwoven fabric (3) to a

Glass fiber fleece or a carbon fiber fleece acts.

10. ceiling or wall element according to claim 87, characterized in that it is the nonwoven fabric (3) is a carbon fiber fleece, which is connected by calendering with the perforated graphite foil (1).

1 1. Ceiling or wall element according to claim 1, one of

preceding claims, characterized in that the heating or cooling coil (9) comprises a fastening profile (1 1) and attached thereto heating or cooling lines (12).

12. ceiling or wall element according to claim 1 19, characterized

in that the fastening profile (1 1) consists of a

thermally conductive material, in particular a metal.

13. ceiling or wall element according to claim 120, characterized

characterized in that the perforated graphite foil (1) with the

Mounting profile (1 1) is in thermal contact.

14. ceiling or wall element according to one of claims 1 or 1 1 to 138, characterized in that the heating or cooling coil (9) comprises a lightweight board (13) made of expanded graphite, in the heating or cooling lines (12) are embedded ,

15. Ceiling or wall element according to one of the preceding claims, characterized in that the bottom plate (2 a) of the frame (2) is perforated.

16. Ceiling or wall element (10) for attachment to a thermal

activated concrete wall or concrete floor (5), wherein the ceiling or wall element (10) via one on the wall or the ceiling (5)

fastenable frame (2) having a bottom plate (2a), characterized in that between the bottom plate (2a) of the frame (2) and the wall or ceiling (5) (9) a fleece (3) and a perforated

Graphite foil (1) and a lightweight board (13) made of expanded graphite is arranged.

17. ceiling or wall element (10) according to claim 2, characterized

in that a lightweight building board (13) made of expanded graphite is arranged on the graphite foil (1).

18. Thermally activated concrete wall or concrete ceiling (5), in the

Pipes (7) for the passage of a heating or cooling fluid, characterized in that on its surface (14) ceiling or wall elements (10) are arranged according to one of claims 1 to 164 arranged side by side.

19. A thermally activatable concrete wall or concrete floor (5) according to claim 175, wherein the ceiling or wall elements (10) comprises a lightweight graphite plate (13) of expanded graphite, characterized in that a thermal coupling between the surface (14) of the wall or ceiling (5) and the wall or ceiling elements (10) over its entire surface over the entire main surface (15) of the or each graphite lightweight board (13) is formed.

20. Use of a composite material consisting of a nonwoven (3) and a bonded to the nonwoven (3) graphite foil (1) as or in a ceiling or wall element (10) for attachment to a ceiling (5) or a wall.

21.Use according to claim 19, characterized in that the graphite foil (1) is perforated.

22. Use according to claim 19 or 20, characterized in that it is in the graphite foil (1) is a sheet of expanded graphite with a hole perforation.

23. Use according to claim 19 or 20, characterized in that the perforated graphite foil (1) has a hole content of more than 20% per unit area.

24. Use according to any one of claims 19 to 22, characterized

in that the fleece (3) is a glass fiber fleece or a carbon fiber fleece.

25. Use according to one of claims 19 to 23, characterized

in that the fleece (3) is a carbon fiber fleece which is bonded to the graphite foil (1) by calendering.