EP2751512A1

EP2751512A1 - Heat-conducting plate, especially for cooling or heating a building

Info

Publication number: EP2751512A1
Application number: EP13762830.1A
Authority: EP
Inventors: Johann Lipinski; Thomas Vogel; Jochen Pfeiffer
Original assignee: Uponor Innovation AB
Current assignee: Uponor Innovation AB
Priority date: 2012-09-17
Filing date: 2013-09-16
Publication date: 2014-07-09
Also published as: JP2015531469A; US20150226440A1; DE202012103540U1; CA2881333A1; KR20150058364A; WO2014041173A1

Abstract

Heat-conducting plate (1), especially for cooling or heating a building, comprising at least one layer (2) of expanded graphite and a pipe which is at least to some extent received in the layer (2), said pipe being a multilayer composite pipe (3).

Description

description

Heat conducting plate, in particular for cooling or heating a building

The present invention relates to a heat conducting plate, in particular for cooling or heating a building, with at least one layer of expanded graphite and a tube at least partially received in the layer.

Heat conducting plates of the type mentioned are known from the prior art. For example, European Patent EP 1 512 933 A2 describes expanded graphite heat conducting plates without binders with preferential heat conduction parallel to the surface of the plate. Furthermore, a method for producing the heat conducting plates

described. In this case, fully expanded graphite is compacted under the direction of a pressure, so that layer planes of the graphite are preferably arranged perpendicularly to the action of the pressure, with individual ones

Hook aggregates of graphite together. As a result, self-supporting heat conducting plates can be produced which

for example, have a thickness of 8 to 50 mm. Such heat conducting plates are used, for example, as wall,

Floor or ceiling elements used for heating or cooling a room. For this purpose, the heat conduction plate for

Example in connection with heaters that use a liquid heat carrier can be used. For the transport of a heat transfer fluid, such as water, pipes made of metal, such as copper or plastic are introduced into the heat conducting plates. As a rule, the tubes are arranged in a spiral or meander shape. alternative The tubes can also be placed between two heat conducting plates, which are then pressed together.

When using plastic tubes proves to be a disadvantage that, for example, in the spiral or

Meandering arrangement of the tubes in a heat conducting plate in the manufacture of the heat conducting plate restoring forces of the tube arise. This is due to the fact that in the production by the effect of pressure in the expanded

Graphite arranged tubes are easily deformed elastically. These restoring forces can be especially with thinner ones

Heat conducting plates lead to damage of the heat conduction plate. Furthermore, it is possible that the

In the event of incomplete embedding in the heat-conducting plate, the plastic tube can loosen and detach due to these restoring forces. In addition, damage to the plastic pipe itself can be caused by the pressing of a plastic tube in a heat conducting plate or when pressing together two heat conducting plates with interposed plastic pipe itself.

The use of copper pipes is very expensive and leads to heavy due to the high weight

Heat-conducting. Furthermore, under certain

Conditions Corrosion damage to the copper pipe occurs. For example, by the presence of water condensate and at least one other metal, e.g. Aluminum, due to the different electrochemical

Potentials of metals form a galvanic cell, which leads to a galvanic corrosion of the copper pipe.

This can lead to leaks or unwanted discoloration of the copper pipe, for example. It is an object of the invention to provide a solution which avoids the above-mentioned disadvantages.

The object mentioned is achieved by a

Wärmeleitplatte, in particular for cooling or heating of a building, solved, which is at least one layer

expanded graphite and in the layer at least

partially received pipe. The at least partially received in the layer tube is as

Multilayer composite pipe formed.

The use of a multi-layer composite pipe prevents, for example, in the case of a spiral or meander-shaped arrangement of the multilayer composite pipe

Restoring forces in the production of Wärmeleitplatte arise. One according to the desired arrangement

bent or formed multilayer composite pipe changes its shape or its position in the

Essentially not. If the multilayer composite pipe is bent or deformed in the manufacturing process, it deforms plastically and there are no high restoring forces. Damage to the layer of the heat conducting plate or a detachment from the layer is thus not possible. in the

This is in contrast to a pure plastic tube

Multilayer composite tube more stable and thereby contributes to

Stability of the entire heat conduction plate at. In contrast to copper pipes, multi-layer composite pipes have a significantly lower weight and are not prone to corrosion, especially in the region of the pipe outside in the presence of a second metal. In addition, the manufacturing cost of a heat conduction according to the invention can be significantly reduced compared to a heat conduction plate with copper pipes. According to an advantageous embodiment of the invention, the multilayer composite pipe has an inner plastic layer, an adhesion-promoting layer and an outer metal layer. Such a multilayer composite pipe is characterized by its low weight with good heat conduction.

According to a further advantageous embodiment of the

Invention, the multilayer composite pipe has an inner

Plastic layer, a primer layer, a

Metal layer, another adhesion promoting layer and an outer plastic layer. Such

Multi-layer composite pipe is characterized by its high

Stability and bending stiffness. According to a further advantageous embodiment of the

Invention is perforated at least one surface of the heat conduction plate or has textures. For example, when using such a heat conduction in a building, the acoustic properties of the

Wärmeleitplatte, in particular the sound insulation can be improved.

According to a further advantageous embodiment of the

Invention has at least one surface of

Heat conducting plate on a layer of mineral wool. This also allows the acoustic properties of the

Heat conduction can be improved.

According to a further advantageous embodiment of the

Invention are at the heat conducting plate devices for

Attachment to further heat conducting plates or other elements, in particular wall and ceiling surfaces, provided. Thereby For example, a heat conduction plate may be suspended from a ceiling surface of a room.

According to a further advantageous embodiment of the

Invention, the heat conducting plate is made by pressing the expanded graphite with inserted multilayer composite pipe.

According to a further advantageous embodiment of the

Invention is the heat conduction plate by pressing the

Multilayer composite pipe produced in recesses of the layer of expanded graphite.

According to a further advantageous embodiment of the

In the invention, the heat conducting plate has another layer of expanded graphite and is made by pressing the two layers with the multilayer composite pipe interposed therebetween. According to a further advantageous embodiment of the

Invention, the heat conducting plate additives,

especially synthetic resin, on.

Further advantageous embodiments of the invention are described in the following detailed description of

Embodiments and the dependent claims disclosed.

The invention will be described below with reference to FIG

Embodiments described with reference to the attached figures. In the figures are similar

Components of different embodiments provided with the same reference numerals and not described again. In the figures show:

Figure 1 is a schematic cross section of a

Wärmeleitplatte according to a first

Embodiment of the invention,

Figure 2 is a schematic cross section of a

Wärmeleitplatte according to a second

Embodiment of the invention,

Figure 3 is a schematic cross section of a

Wärmeleitplatte according to a third

Embodiment of the invention, Figure 4 is a schematic plan view of a

Wärmeleitplatte according to a fourth

Embodiment of the invention,

Figure 5 is a schematic cross section of a

Wärmeleitplatte when pressing a

Multi-layer composite pipe according to a fifth

Embodiment of the invention, and

Figure 6 is a schematic cross section of a

Wärmeleitplatte when pressing two layers and a multilayer composite pipe according to a sixth embodiment of the invention.

FIG. 1 shows a schematic cross section of a

Heat conducting plate 1 according to a first embodiment of the invention. The heat-conducting plate 1 has a layer 2 of expanded graphite. Next, the heat conducting 1 a multilayer composite pipe 3, which is partially incorporated on a surface 4 in the layer 2.

The multilayer composite pipe 3 has an inner

Plastic layer 5, for example made of cross-linked

Polyethylene (PE-X), on. Alternatively, the inner

Plastic layer 5 also made of a polyethylene material for increased temperature resistance (PE-RT) exist. Furthermore, the multilayer composite pipe 3 has a

Bonding layer 6 on. The adhesion-promoting layer 6 connects the inner plastic layer 5 to an outer metal layer 7. The outer metal layer 7 can

be made for example of an aluminum material or an aluminum alloy.

Within the multi-layer composite pipe 3 flows

heat-transferring fluid, for example water, to give heat to the layer 2 or to absorb heat from the layer 2.

The heat-conducting plate 1 is inserted by inserting the

Multi-layer composite pipe 3 made in expanded graphite and then pressing. By the action of directed pressure, the layer 2 of expanded graphite, in which the multilayer composite pipe 3 is at least partially embedded, so that a positive and / or positive connection of the layer 2 and the

Multilayer composite pipe 3 is formed. Alternatively, the heat-conducting plate 1 additives,

in particular synthetic resin, in order, for example, to increase the stability of the heat-conducting plate 1. The additives can in the production of the layer 2 the be expanded graphite or added later, for example as an additional layer, attached to the layer 2 or applied to this. The heat-conducting plate 1 is suitable, for example, for use in a building for cooling or heating rooms. Preferably, the heat conducting plate is attached to a ceiling of a room

suspended. In this case, the heat conduction plate 1 takes over the

Layer 2, for example, heat from the surrounding

Ambient air on and gives this heat to the fluid in the

Interior of the multi-layer composite pipe 3 for cooling the room. Conversely, heat energy of the fluid is transferred through the

Multilayer composite pipe 3 delivered to the layer 2, which in turn emits the heat to the surrounding ambient air for heating the room, in particular by radiation.

Figure 2 shows a schematic cross section of a

Heat conducting plate 1 according to a second embodiment of the invention. The heat-conducting plate 1 has a

Multilayer composite pipe 3, which is formed by five layers. The multilayer composite pipe 3 has an inner plastic layer 5, an adhesion-promoting layer 6, a metal layer 7, a second adhesion-promoting layer 8 and a second, outer plastic layer 9. The

Multilayer composite pipe 3 is arranged within the layer 2 in such a way that a pipe outside 10 of the

Multi-layer composite pipe 3 is flush with the surface 4 of the layer 2. The inner plastic layer 5 and the second, outer

Plastic layer 9 may consist, for example, of cross-linked polyethylene (PE-X), or of a polyethylene material for increased temperature resistance (PE-RT). The Metal layer 7 may be made of an aluminum material or an aluminum alloy.

In comparison to the embodiment according to FIG. 1, the multilayer composite pipe 3 has a higher stability

or stiffness with still low weight on.

The flush arrangement of the multi-layer composite pipe 3 with the surface 4, a good heat transfer between the layer 2 and the multi-layer composite pipe 3 is ensured. This is mainly due to the fact that the heat conduction within the layer 2 due to the production of the layer 2 under directional pressure parallel to the surface 4 is better than perpendicular to the surface 4 of the layer second

In an embodiment not shown the

Heat-conducting plate 1 may be perforated at least one outer side of the layer 2 or have textures. This acoustic properties of the heat conduction plate 1 can be improved. For example, recesses may be introduced on such an outside of the heat-conducting plate 1.

FIG. 3 shows a schematic cross section of a

Heat conducting plate 1 according to a third embodiment of the invention. The heat-conducting panel 1 is configured substantially in accordance with the second exemplary embodiment according to FIG. In contrast to the embodiment according to FIG. 2, however, the multilayer composite pipe 3 is arranged within the layer 2 such that it is at a distance from one another

Surface 4 and a bottom 11 of the layer 2 is.

In addition, the heat-conducting plate 1 has a layer of mineral wool 12 on the surface 4 of the layer 2. Of Further, in the layer 2 holes 21, in particular

Drilling, provided. This can be combined with the

Mineral wool 12, for example, a sound-damping effect can be achieved. The layer of mineral wool 12 can

for example, at another or more

Outer sides of the layer 2 may be arranged.

Alternatively, however, other layers such as plastic layers or metal layers, may be mounted on one or more outer sides of the layer 2, for example, the heat conduction plate 1 against

to protect mechanical or other environmental influences.

Figure 4 shows a schematic plan view of a

The heat conducting plate 1 has a first connection 13 and a second connection 14. The terminal 13 and the terminal 14 are over a

Multi-layer composite pipe 3 according to one embodiment with reference to Figures 1 to 3 connected. That's it

Multilayer composite pipe 3 arranged meandering within the layer 2. Furthermore, the heat-conducting plate 1 has two holding devices 15 for attaching the heat-conducting plate 1 to wall or ceiling surfaces. In addition, this indicates

Multilayer composite pipe 3 multiple bending areas 16 on.

The holding devices 15 may have, for example, pins, angles, hooks or anchors in order to attach the heat-conducting plate 1 to a ceiling surface of a room.

By using the multi-layer composite pipe 3, for example, in the production of the heat-conducting plate 1, essentially no restoring forces occur in the bending regions 16 on, since the multi-layer composite pipe 3 by the

Metal layer 7 can be plasticized previously in shape.

The heat-conducting plate 1 is, for example, at one

Heating system connected, wherein via the terminal 13 a fluid, for example water, enters the multilayer composite pipe 3. According to the arrangement of the

Multilayer composite pipe 3, the fluid is distributed over the surface of the layer 2. Via the connection 14, the fluid flows off again.

Such a heat-conducting plate 1 is particularly suitable for use in buildings for cooling or heating a room.

Such heat-conducting plates are preferably fastened to ceiling walls of a room. It proves to be particularly advantageous that the heat-conducting plate 1 due to the low

Weight of the multilayer composite pipe 3 in comparison to

Wärmeleitplatten with copper pipes has a significantly lower weight. Thus, such heat transfer plates can be attached to less viable ceiling walls of buildings, such as old buildings. Furthermore, it is possible to use comparatively thin heat conducting plates

to produce, because the multi-layer composite pipe 3 mainly due to the metal layer 7 contributes to the stability of the layer 2 of expanded graphite.

The connections 13 and 14 shown in FIG

Wärmeleitplatte 1 can differently on the layer 2

be arranged, for example, opposite one another. In addition, the multilayer composite pipe 3 in the interior of the layer 2 can also run differently, for example in a spiral shape. In addition, it is conceivable that within a layer 2 more

Multilayer composite pipes 3 are arranged, which over the Connections 13 and 14 and / or other connections are connected, for example, to a heating system.

In a fifth embodiment of the invention according to Figure 5 is a schematic cross section of a

Wärmeleitplatte 1 when pressing a

Multilayer composite pipe 3 shown. The already under

Exposure of pressure resulting layer 2 has a

Recess 17, which, for example, in a

Post-processing step has been introduced. The

Recess 17 is adapted to an outer diameter and the arrangement or shape of the multilayer composite pipe 3 such that the multi-layer composite pipe 3 can be pressed into the recess 17, inserted or inserted.

The recess 17 may for example be designed such that a meandering arranged

Multilayer composite pipe 3 according to the embodiment of Figure 4 can be introduced into the layer 2.

FIG. 6 shows a schematic cross-section of a heat-conducting plate 1 according to a sixth to be pressed

Embodiment of the invention. The heat-conducting plate 1, in addition to the layer 2, a second, already under

Pressure applied layer 18 of expanded graphite. Between the two layers 2 and 18, the multi-layer composite pipe 3 is inserted. For example, under the action of pressure in accordance with the arrow directions 19 and 20, the heat-conducting plate 1 is produced by pressing the two layers 2 and 18 together. It creates a force and / or

positive connection of the two layers 2 and 18 and the multi-layer composite pipe 3rd The features of a heat conduction plate set forth in the described embodiments can be combined with one another in various ways in order to realize the advantages and / or functions mentioned in each case.

Reference sign list

1 heat conducting plate

2 layer

3 multi-layer composite pipe

4 surface

5 plastic layer

6 adhesion layer

7 metal layer

8 adhesive layer

9 plastic layer

10 outside of the tube

11 bottom

12 mineral wool

13 connection

14 connection

15 holding device

16 bending area

17 recess

18 shift

19 arrow direction

20 arrow direction

21 holes

Claims

Heat-conducting plate (1), in particular for cooling or heating a building, with at least one layer (2) made of expanded graphite and a tube at least partially accommodated in the layer (2), wherein

the pipe is designed as a multi-layer composite pipe (3).

Heat-conducting plate (1) according to claim 1, in which the multi-layer composite pipe (3) has an inner plastic layer (5), an adhesion-promoting layer (6) and an outer metal layer (7).

Heat conducting plate (1) according to claim 1, in which the multi-layer composite pipe (3) has an inner plastic layer

(5), an adhesion-promoting layer (6), a

Metal layer (7), another adhesion promoting layer

(6) and an outer plastic layer (5).

Heat-conducting plate (1) according to claim 2 or 3, in which the inner plastic layer (5) and/or the outer plastic layer (5) are essentially made of polyethylene (PE) and the metal layer (7) are essentially made of an aluminum material.

Heat-conducting plate (1) according to one of claims 1 to 4, in which at least one surface (4) is perforated or has textures.

Heat-conducting plate according to one of claims 1 to 5, in which at least one surface (4) has a layer of mineral wool.

7. Heat-conducting plate (1) according to one of claims 1 to 6, in which holding devices (15) are provided for attachment to further heat-conducting plates (1) or other elements, in particular wall and ceiling surfaces.

8. Heat-conducting plate (1) according to one of claims 1 to 7, which is produced by pressing the expanded graphite with an inserted multi-layer composite tube (3).

9. Heat-conducting plate (1) according to one of claims 1 to 7, which is produced by pressing the multi-layer composite pipe (3) into recesses in the layer (2).

10. Heat-conducting plate (1) according to one of claims 1 to 7, which has a further layer (18) of expanded

Has graphite and by pressing the two

Layers (2) and (18) with arranged in between

Multilayer composite pipe (3) is made.

11. Heat-conducting plate (1) according to one of claims 1 to 10, which has additives, in particular synthetic resin.