EP0347416A1

EP0347416A1 - Structural element for surface heating and cooling systems and process for manufacturing such elements

Info

Publication number: EP0347416A1
Application number: EP88901593A
Authority: EP
Inventors: Hans Josef May; Roland Schnettler; Bernhard Schweinsberg
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-02-13
Filing date: 1988-02-10
Publication date: 1989-12-27
Also published as: WO1988006259A1; EP0278489A1; AU1293688A

Abstract

Un élément structural pour systèmes de chauffage et de refroidissement de surface, ayant la forme d'une construction sandwich auto-porteuse, comporte une plaque conductrice de chaleur (501) robuste formant la semelle supérieure, et une plaque inférieure robuste (502) liée, de manière à résister au cisaillement, à la plaque conductrice de chaleur par l'intermédiaire d'une couche calorifuge (504) faite d'un matériau plastique adéquat, de préférence de la mousse polyuréthane. Des canaux caloporteurs (503) ayant des connexions conductrices de chaleur sont situées sur la surface inférieure de la plaque conductrice de chaleur (501) à laquelle ils sont reliées. On propose un procédé de fabrication de ces éléments structuraux, dans lequel les profilés formant les canaux caloporteurs (503) sont fixés à la surface inférieure de la plaque conductrice de chaleur supérieure (501) par la pression d'une couche calorifuge (504) mise en place par mousage entre les plaques supérieure et inférieure (501 et 502), soutenues à l'extérieur et maintenues à distance, avec étanchéification latérale de l'espace entre les plaques.A structural element for surface heating and cooling systems, in the form of a self-supporting sandwich construction, comprises a robust heat conducting plate (501) forming the upper sole, and a robust lower plate (502) linked, so as to resist shearing, the heat conducting plate by means of a heat-insulating layer (504) made of a suitable plastic material, preferably polyurethane foam. Heat transfer channels (503) having heat conducting connections are located on the bottom surface of the heat conducting plate (501) to which they are connected. A method of manufacturing these structural elements is proposed, in which the profiles forming the heat transfer channels (503) are fixed to the lower surface of the upper heat conducting plate (501) by the pressure of a heat-insulating layer (504) in place by foaming between the upper and lower plates (501 and 502), supported on the outside and kept at a distance, with lateral sealing of the space between the plates.

Description

Component for surface heating or cooling systems and method for producing such components

The invention relates to a component for surface heating or cooling systems, consisting of at least one heat carrier channel and a plate connected to it in a heat-conducting manner, which is provided on its underside connected to the heat-conducting chamber with a thermal insulation layer, and a method for producing such components .

According to DE-OS 26 58 673, components for connecting underfloor heating systems are already known which consist of a thin plate-shaped heat-conducting sheet, on the underside of which tubular profiles are fastened as heat-conducting channels. The underside of these thin thermal baffles is lined with a thermal barrier coating. Such components to be produced in grid dimensions serve for a system-like construction of underfloor heating in both new and old buildings. The requirements placed on these underfloor heating systems are that their components are easy to assemble at the construction site, allow intimate heat-conducting contact with the underfloor structure and ensure thermal insulation from the subsurface. These known plate-like components can be installed with a relatively low floor construction height. However, they require integration into the supporting structure and sufficient load-bearing cover at the top. After appropriate assembly, the heat transfer medium, preferably hot water, flows through the interconnected components in a suitable guide in the low-temperature range. The heat supplied is distributed over the heat conducting plate.

A component for surface heating systems is known from JP-OS 59-225 229, in which the profiles forming the heat transfer channels are recessed in the form of heating coils in a styrofoam layer. Under the influence of heat and pressure, plates are pressed against the insulation layer above and below, which are to be connected in this way to the insulation layer. A disadvantage of this construction is the resulting distance between the heat transfer channels and the adjacent plate. Such a composite panel requires support when load-bearing forces occur, since no significant thrust forces can be transmitted via the thermal insulation layer in the manner of polystyrene.

The object of the invention is to propose components for surface heating or cooling systems for floors, walls, ceilings or roofs, which can be laid independently of covering or covering or supporting means for a self-supporting structure, and a corresponding method for the production to propose such components. The object of the invention is achieved with a component with all the features of claim 1 and with a method with the features of claim 6.

The proposed component is self-supporting and can therefore be used as part of a floor, wall, roof or ceiling system. It is able to absorb tensile and compressive stresses due to the shear-resistant connection of the top plate to the bottom plate.

According to preferred embodiments of the invention, the profiles forming the heat conduction channels rest with one or more flattened sections on the underside of the top plate forming the heat plate. Such components can be produced by a method according to the invention, in which the fastening of the profiles forming the heat carrier channels is fastened between the two plates by the pressure of the foaming thermal insulation layer. Such methods can be carried out continuously according to claim 7. A discontinuous type of production in corresponding support forms is also possible.

The invention also includes a proposal to provide the heat transfer channels on both plates, for example when using such components to form partitions.

Of crucial importance for the invention is the direct heat-conducting connection of the heat transfer channels to one or both self-supporting plates and the shear-resistant connection of the two plates by means of the suitable plastic which forms the thermal insulation layer.

The invention is explained in more detail below with the aid of illustrated exemplary embodiments and a process diagram. Show it : 1 shows a partial section through a component in which pipes are attached as heat transfer channels to the underside of the upper plate forming the heat-conducting plate,

A partial section through a component in which the heat transfer channels are formed by a trapezoidal profiled support plate,

FIG. 1 shows a partial section through a component in which the heat transfer channels are formed on one side in the thermal insulation layer,

A partial section through a component in which the heat transfer channels are formed on both sides in the thermal barrier coating,

5 shows a partial section through a component in which the heat transfer channels are formed by a trapezoidally profiled sheet metal attached to the underside of the top plate,

6 shows a partial section through a wall element, in which a hollow profile with a semi-annular cross section forms the heat transfer channel,

7 shows a view of a schematic device for producing components

and

8 shows a cross section through the device according to FIG. 7. The components shown in FIGS. 1-6 are used to form surface heating or cooling systems in floors, walls, ceilings or roofs. They are produced in grid dimensions and statis with known assembly techniques and connected to each other in a sealed manner with respect to their heat transfer channels. Due to the specific sandwich construction of the individual components and their connection, self-supporting systems are created.

The component according to FIG. 1 consists of the top plate 1 forming the heat-conducting plate and the bottom plate 2 which is connected to it with abrasion through the thermal insulation layer 4, preferably made of foamed polyurethane. The top plate preferably consists of metal, while the bottom plate can also consist of plastic. On the underside of the top plate 1 31 tubes al heat transfer channels 3 are attached in a heat-conducting manner with solder connections.

To increase the shear-resistant connection between an upper plate 101 forming the heat-conducting plate and a lower plate 102, a trapezoidal support plate 103 'is provided corresponding to the component according to FIG. 2, which has corresponding fastening sections 131 on the underside of the upper plate 101 and with corresponding sections is attached to the lower plate 102. This trapezoidal profiled support plate 103 'forms the heat transfer channels 103. The intermediate spaces are filled with a foam plastic 104.

In the components according to FIGS. 3 and 4, the heat transfer channels 203 and 303 are formed in the thermal insulation layer 204 and 304 from rigid foam plastic. They are closed off by the upper plates 201 and 301 forming the heat-conducting plate and, in the exemplary embodiment according to FIG. 4, also by the lower plate 302, which in this embodiment is also a heat-conducting plate. The thrust resistant Connections in turn form the thermal insulation layers 204 and 304. They connect the top plates 201 and 301 to the bottom plates 202 and 302, respectively.

In the exemplary embodiment according to FIG. 5, a trapezoidal profile plate 403 'in a shear-resistant connection is placed on the underside of the top plate 401 in a heat-conducting manner. In this way, the heat transfer channels 403 are formed. The shear-resistant connection between the profile plate 403 'and the lower plate 402 forms the suitable thermal insulation layer 404.

The component shown in FIG. 6 in turn consists of two spaced-apart load-bearing plates 501, 502 which are connected to one another in a shear-resistant manner by the foamed-in hard plastic foam 504. The profile 531 serving as the heat transfer channel 503 is semi-annular in cross section. The flattened connecting wall bears the number 531a. With this wall, the profile is directly heat-conducting on the inside of the top plate 501.

Components according to FIGS. 5 and 6 can be produced in an advantageous manner in that their profiles 403 ¹ and 531, which form the heat transfer channels 403 and 503, respectively, by the pressure of an upper and lower plate 401, which is supported and kept at a distance from the outside , 501 or 402, 502 are attached to the underside of the upper plate 401 or 501 forming the heat-conducting plate while sealing the spacing space between the plates by foaming.

A continuous production process can be seen from the illustrations according to FIGS. 7 and 8. The designated with the number 501 ', the upper plates forming metal strip is len len-plates and 6 supplied to a corresponding device. On the inside of this metal strip 501 ', the profile forming the heat transfer channel is Pipe 503 'placed, preferably pressed with a pressure roller 7, optionally with an adhesive layer. At a suitable distance from the metal strip 501 ', a strip 502', which later forms the lower plate, is fed synchronously, which is also supported from above by rollers and plates 5. The distance between the two tapes determines the required thickness of the thermal insulation layer. The gap between the sides is sealed and supported laterally by appropriate devices 9. Via the preferably oscillating device 8, foaming liquid plastic, preferably polyurethane, is introduced in the feed area of the two belts. This hardening plastic foam fills the distance between the two bands and presses the profile 503 'against the inside of the metal band 501' under the resulting pressure. In this way, the profiles 503 'forming the heat transfer channel are fixed and held on the metal strip 501'. After curing, the resulting components can be produced by separating them from the strand.

However, it is also possible to supply the profiles forming the heat transfer channels in batches. Discontinuous processes are also possible, in which the components are produced in corresponding support molds.

Claims

- 2 patent claims

1. Component for surface heating or cooling systems, consisting of at least one heat transfer channel and a plate connected to it in a heat-conducting manner, which is provided on its underside connected to the heat-conducting channel with a heat insulation layer, characterized by a self-supporting sandwich construction with a top belt forming the top belt load-bearing heat-conducting plate (1, 101, 201, 301, 401, 501) and a load-bearing base plate (2, 102, 202) that is connected to it in a shear-resistant manner at a distance via the thermal insulation layer made of a corresponding plastic, preferably a foamed polyurethane , 302, 402, 502).

2. Component according to claim 1, d a d u r c h g e k e n n ¬ z e i c h n e t that the heat transfer channels (403) by a to the underside of the heat conducting plate (401) attached, preferably trapezoidally shaped in cross-section plate (403. ') are formed.

3. Component according to claim 1, d a d u r c h g e k e n n ¬ z e i c h n e t that the heat-conducting channels (503) forming profiles (531) each abut with one or more flattened sections (531) on the underside of the top plate (501).

4. The component as claimed in claim 3, a hollow profile forming the heat transfer channel (503) with a half-ring or rib-section cross-section.

5. The component according to claim 1, d a d u r c h g e k e n n ¬ z e i c h n e t that in the heat insulation layer (104, 204, 304, 404) one or more heat transfer channels (103,

203, 303, 403) are formed, which are covered by the top plate (101, 201, 301) and / or the bottom plate (302). - 3 -

6. A method for the production of components according to one of claims 1 to 4, characterized in that the heat transfer channels (403, 503) forming profile (403 ', 503') by the pressure of a between the externally supported and kept spaced upper and lower plates (401, 501 or 402, 502) are attached to the underside of the upper plate (401, 501) forming the heat-conducting plate while the space between the plates is foamed.

7. The method according to claim 6, characterized in that between a continuously fed metal strip (501 ') which forms the top plate (501) and a metal strip (502') which is fed in parallel and in a controlled manner above it and is controlled in parallel and at a distance. ) a curing plastic foam (504 ¹ ), preferably polyurethane, is introduced, the profiles (503 ') forming the heat transfer channels being fed against the inside of the metal strip (501') forming the top plate before the plastic foam is introduced.

8. The method according to claim 7, characterized in that the profiles forming the heat transfer channels (503 ¹ ) are held with an adhesive layer on the inside of the metal strip forming the top plate (501 ').