EP2008028A2

EP2008028A2 - Insulating panel with a heating function and surface heating system

Info

Publication number: EP2008028A2
Application number: EP07722187A
Authority: EP
Inventors: Kurt Merz
Original assignee: Akzenta Paneele and Profile GmbH
Current assignee: Akzenta Paneele and Profile GmbH
Priority date: 2006-04-10
Filing date: 2007-04-10
Publication date: 2008-12-31
Also published as: WO2007115559A3; WO2007115559A2

Abstract

The aim of the invention is to provide a heating system for hard floors, which is easy to install and which allows more possible mechanical connections between the individual elements of the floor than in know systems. As a result, an insulating panel with a heating function is provided, said panel being used, in particular, as a sub-layer for panels such as laminate panel flooring, comprising at least one layer (10) made from an insulating material on which a heating film device (20) is applied as a resistance heater. Said heating film device comprises two conductor strips (50) which extend at a distance from each other and along the longitudinal edges thereof, and which comprise on their ends, respectively, an electric contact section (51). The invention also relates to a surface heating system comprising several insulating panels of said type which are arranged next to each other and which are to be electrically connected, and connecting elements (100) for electrically connecting two insulating panels which are arranged next to each other and a power supply.

Description

Insulating board with heating function and surface heating system

The invention relates to an insulating board with heating function, in particular for use as a support for panels such as floor laminate panels and realized with these insulating panels surface heating system, which can be used in particular in conjunction with floor panels.

In the field, for example, laminate panels are known, which have on their underside an insulating material for impact sound insulation and a heating foil for heating the folded floor. The panels with integrated heating function are rectangular in shape, wherein at the end faces in each case two plugs are provided with which a panel is electrically connected to the frontally adjacent panels. The panels have on their front or longitudinal sides mechanical snap or locking connection elements, so that the floor covering can be laid without glue. Due to the fact that the electrical connection of the panels to one another takes place at the ends by mating of the plug-in connectors, certain constraints arise with regard to the mechanical connection elements of the panels. Predominantly, the electrical connectors of adjacent panels are joined together and subsequently the mechanical connection is established at the end faces of the previously electrically connected panels. This inevitably results in that the panels mechanically on the front side by a relative displacement of the panels along their longitudinal edges are frontally coupled to their respective adjacent panels. In this respect, the possibilities of mechanically connecting the panels with heating function due to the simultaneous necessary electrical coupling in the prior art are limited.

German Utility Model DE 202 18 331 U1 discloses a heated floor panel in which an electrical resistance heating foil is applied to the base of the panels. The electrical contacting of adjacent panels can be done either on their front sides or on their long sides. For electrical connection of adjacent panels, these have electrically effective pockets or plug-in parts, which operate on the electrical socket-plug principle.

Further, a heating arrangement is known, as described in German Patent Application DE 198 49 432 Al. This has a surface heating with a coating for generating electromagnetic waves, wherein by means of a harmonic generator, a vibration spectrum to be generated in the range of monopolar natural frequencies. Individual heating elements are used as surface heating elements and connected to the harmonic generator in an electrically connected manner.

The invention has for its object to provide a heater for ^' hard floors such as a floor composed of panels or parquet floor, which is easy to install and in particular the possible mechanical connections between the individual elements of the floor less limited than is the case with known systems ,

This object is achieved in a surprisingly simple manner with an insulating panel with heating function according to claim 1 and a surface heating system with the features of claim 18. The inventively embodied insulating board with heating function has at least one layer of a dämmfähigen material on which is designed as a resistance heating Heizfolieneinrichtung, wherein the Heizfolieneinrichtung along the longitudinal edges of two mutually spaced extending conductor strips, at the ends of each an electrical contact portion is provided , which is used for electrically connecting adjacent mounted insulation boards. In contrast to the prior art described above, the invention teaches insofar insulating plate with integrated heating function and floor elements, such as a panel, not to connect to each other, but to lay separately.

The specified object of the invention is further achieved by a surface heating system with a plurality of such juxtaposed and electrically interconnected insulation boards, in particular for use as a support for panels such as floor laminate panels, and with connecting elements for electrically connecting two adjacent arranged insulating panels and a power supply, which to the electrically connected insulation boards can be connected, wherein an electrical connection element has two conductively connected coupling portions which are each formed for connection to an electrical connection device, which are arranged on two adjacent arranged and to be electrically interconnected insulation boards.

Particularly when using the area heating system according to the invention as a base for floor panels, the mechanical coupling between the panels or the laying method of the panels is not restricted. In this respect, it is now also possible to heat a panel floor, in which adjacent panels are connected at the end sides by insertion along the end edges, which is not possible in the known heating arrangements of the prior art. The inventively embodied insulation board may be rectangular, wherein it is within the scope of the invention to provide more than two conductor strips with interposed Leitwiderstandstandsmate- material on the insulation board, but ultimately this is the production cost. In this case, in the installed state of the insulation boards, the conductor strips may be connected to an insulation board either with the operating potential or with a reference potential.

As insulating material for the insulating layer, for example, wood fiber, rubber and / or foam, such as an extruded polystyrene foam may be provided.

In order to provide a heating function over a large area on an insulating panel, it can be provided that a conductive material having a sheet resistivity greater than the sheet resistance of the conductor strip is arranged between the conductor strips. This ensures that a uniform heating voltage over the entire extension of the heater is present and insofar a homogeneous heat generation over substantially the entire extension of the heating foil is realized. The heating current flows between the two conductor strips of an insulation board. Thus, the heating voltage drops between the two conductor strips of the respective insulating board, while the electric potential on a strip of a plate is substantially constant. Depending on the electrical conditions, in particular as a function of the resistivity of the conductive material, it may also be expedient if the conductive material is not arranged homogeneously between the conductor strips of an insulating board, but rather in strip form, for example, so that strips of this material spaced between the conductor strips are present , As a rule, these strips will extend perpendicular to the conductor strips. The conductive resistive material having a sheet resistivity greater than that of the conductor strip may include For example, graphite, carbon fiber or other suitable conductive material include. In addition, conductive composite materials can be used. It is particularly advantageous if the conductive material can be applied to a suitable substrate using a simple application method, such as a screen printing method. Such a conductive material may be, for example, a graphite-based composition.

The conductor strips used on the insulation board may consist of different, highly conductive materials, for example, they may comprise metal or a conductive plastic. As particularly useful, the use of a metal foil, such as a copper foil, has proven to be conductor strips.

In order to electrically connect insulation boards arranged adjacent to one another, it can be provided that an electrical connection device is attached to an electrical contact section of a conductor strip. To achieve a mechanical and an electrical attachment of the connection device, on the conductor strip can be provided that extend parts of the connection device through the conductor strip therethrough. Such a connection device may, for example, comprise a stamped element made of a conductive material, such as metal or, for example, also a conductor foil.

The electrical connection device preferably comprises a fastening section for attachment to the contact section of a conductor strip and a coupling section for electrically coupling the connection device to a connecting element. This connecting element can be an individual part and can be designed, for example, as a plug-in part which can be connected manually to the connecting device.

In order to provide an attachment of the electrical connection device to a conductor strip, provision may be made for the connection device to be arranged in the region of its attachment. has crimping arms and is thus mechanically and electrically secured by means of a crimped connection at the contact portion of the conductor strip.

In order to provide an electrical connection, which can be produced easily and without tools manually between two adjacently arranged insulation boards, the electrical connection device can be formed in the coupling section as part of a socket-plug connection. In this case, the coupling portion of the electrical connection device can provide at least one contact socket for receiving a contact pin. For the design of the attachment portion of the connection device can be provided that the contact socket merges into a fastening web which is fixed to a conductor strip.

In order to provide a particularly secure attachment of the electrical connection device to the conductor strip, both electrically and mechanically, it can be provided that the electrical connection device in the coupling section provides two spaced contact bushes, each of which merges into a fastening web in the attachment section, at its end remote from the coupling section is arranged perpendicular to the longitudinal extent of the contact sockets extending web, which connects the two contact sockets and the two fixing webs electrically and mechanically. This web not only increases the mechanical stability of the electrical connection device on the conductor strip, but also ensures better heat dissipation at the contact with the conductor strip and / or at the contact with the connecting element.

In this case, the fastening web can advantageously have crimp arms which extend perpendicularly through a conductor strip and bear against the conductor strip on the opposite side, whereby a particularly good mechanical as well as electrical attachment of the connection device to the associated conductor strip is realized. In order to facilitate the insertion of the associated contact pins on a connecting element in the presence of a plurality of contact sockets on an electrical connection device, it can be provided that a front plate connected to these is arranged in front of the contact bushes, which has two openings which are aligned with the insertion openings of the contact sockets , In this sense, the surface normal of the front panel runs parallel to the longitudinal extension of the contact sockets.

In order to provide a centering aid, it can be provided that the front panel has a third opening which guides a centering lance on the connecting element. In order to prevent a connection element introduced into a connection device from coming off again, it can be provided that the front plate has a latching means which cooperates with a complementary latching means on the connection element to provide a strain relief. Such a locking means may be, for example, the inner edge of the third opening of the front panel.

It may be expedient if the front panel is formed as the basis of an L-shaped sheet metal part to which the contact sockets are attached.

To provide a compact heating foil device can be provided that it comprises a rectangular, in particular plastic carrier film on which a homogeneous layer of a conductive material is applied to form a resistive layer, which extends for example over substantially the entire surface extension of the carrier film. As a result, a homogeneous heat generation over substantially the entire extent of the heating device can be realized. As a material for the carrier film, in principle, all substances are conceivable which have a sufficiently large mechanical and thermal stability. The use of a polyester, such as PETP or PET, has proven to be advantageous. In addition, however, other basic Substances such as POM can be used. In order to provide the said conductor strips for providing a mechanical and electrical connection to the resistance layer, it can be provided that the strips are applied directly to the resistance layer, wherein the conductor strips can be arranged, in particular parallel to one another, in each case on one longitudinal side of the resistance layer. In order to mechanically and / or electrically terminate the heating foil device, it can be provided that a plastic foil covers the resist layer and the conductor strips. As a material comes in principle the same material as for the carrier film in question. However, the plastic films acting as cover film can be made much thinner than the carrier film. For this purpose, especially a sealing hot foil is suitable.

To provide an insulation board according to the invention with a heating function, it can be provided that the heating film device is fastened to a self-supporting layer of insulating material, for example by gluing.

In order to protect the attachment of the electrical connection device to the conductor strip against damage, it can be provided that the connection device between the layer of insulating material and the heating foil device can be arranged. As a result, the connection device is covered and protected on both sides. In addition, it can also be provided that the electrical connection device rests completely on the at least one layer of insulating material, so that the connection device does not project beyond the edge of the insulating material. Even if the connection device has a certain extent perpendicular to the plane of the plate, this is not detrimental since the connection device is pressed into the insulating material upon the occurrence of a force in the normal direction of the plate and is thus protected.

For coupling the connecting element with two connection devices, which each have at least one contact socket It can be provided that the two coupling sections of the connecting element each have at least one contact pin for insertion into a contact socket to a connection device. The connecting element is thereby manually inserted into the two connection devices, so that ultimately the adjacently arranged one another insulation board according to the invention with heating function can be electrically connected to each other without tools. This connection is carried out for both conductor strips of the adjacent insulation boards, so that in each case the adjacent conductor strips of the two insulation boards are interconnected.

In order to be able to couple with two connection devices, which each have two contact sockets, it can be provided that both coupling sections of the connection element each comprise two spaced and parallel extending contact pins for insertion into the two spaced contact sockets on a connection device. In order to align the two contact pins of the two coupling sections to one another, it can be provided that all the contact pins extend from a common crosspiece.

In order to facilitate the manual merging of the connecting element and the connecting device, it can further be provided that a centering lance is arranged between the contact pins, which extends substantially parallel to the contact pins.

In order to avoid that the coupling of a connecting element with a connection device on a conductor strip dissolves again by external, unintentional force, it can be provided that the connecting element has latching means, which with a complementary locking means on a connection device of an insulating board to provide a strain relief interacts. In this embodiment, the connecting element according to the invention in each case has a latching means for the connection to the two connection devices. To provide such a locking means can be provided that the centering lance is provided with a resiliently mounted latching lug, wherein the latching lug in particular approximately perpendicular to the longitudinal extent of the contact pins.

Preferably, the connecting element is made of a conductive material such as a metal, so that the connecting element may be, for example, a simple to produce stamped part.

The surface heating system according to the invention can in principle be used for all floating hard floors. In order to avoid heat build-up, provision may advantageously be made for predetermined areas of the laid surface to give off heat in the area heating system according to the invention. This is useful, for example, when furniture or other objects are resting directly on the floor. Therefore, the invention provides a plurality of plates, which consist only of insulating material without heating function, which have substantially the same dimensions in terms of height, width and length, as the insulation boards with heating function. These pure insulation panels can be laid in the said surface sections. In addition, the provision of such insulation boards without heating function makes it possible that any surfaces can be equipped with the surface heating system according to the invention without insulation boards having Heizfunktion be cut must, which would then result in a cumbersome attachment of connection devices to the conductor strip. The provision of such insulation boards without heating function thus ensures that the surface heating system according to the invention can be laid without tools.

Advantageously, the surface heating system according to the invention comprises a temperature sensor which detects the temperature of the heating foil device or adjacent regions, such as in the insulating material. It may be expedient if the system has a temperature control device which in the Response to an actual setpoint temperature comparison controls the power supply. For example, the actual temperature may be a room temperature and the desired temperature may be a desired room temperature. In order to prevent heat build-up, the temperature in the heating foil, in the insulating material and / or in the floor itself, as on a floor panel, can be monitored at the same time.

The area heating system according to the invention can be operated both with an alternating voltage, in particular with a grid-related 50 Hz alternating voltage as well as with a direct current voltage. This operating voltage is the voltage which is applied between the two conductor strips of a plate. In this case, for example, the power supply device may be a mains-operated, controllable alternating voltage source, which is controlled by the temperature control for adjusting the operating voltage. The use of a low-voltage operating voltage, such as 24 volts, ensures that the area heating system according to the invention can be installed by persons without special knowledge or skills.

The area heating system according to the invention can be used both for the floor area and for the wall area of rooms in buildings. The contacting of the individual plates with each other and the connection to the power supply device depend on the respective electrical conditions. For example, it may be that a predetermined number of insulation boards with heating function are connected in parallel. It may be expedient if the power supply device has a plurality of terminals, to each of which a predetermined maximum number of mutually parallel connected insulation boards is connected with heating function.

The insulating material used for the insulation board according to the invention may be an impact sound insulating material. It is particularly advantageous if the material at the same time has the property of thermal insulation, so that with the invention To the invention insulation board both the impact sound of lying on the insulation board hard soil can be reduced and the heat dissipation is reduced in the soil. Such an insulating material is, for example, a polystyrene foam extruded as a plate. The thickness of the insulating layer can be adapted to the respective requirements, for use with laminate panels, a thickness of the insulating material of about 3 mm, in particular in conjunction with a floor of laminate panels has been found to be advantageous.

In terms of the method, the stated object is achieved by a method for producing an insulating panel comprising the steps of: applying a resistance layer to a rectangular carrier film, applying two conductor strips, in each case along two longitudinal edges of the carrier film, in particular of two conductor films to the resistance layer; Laminating a heated plastic film to the resistive layer and the conductor strips; Attaching connection devices at the ends of the conductor strips and attaching at least one layer-capable material to the carrier film.

In order to avoid that, after cooling of the plastic films, a tipping of the carrier film occurs, it may be provided to stretch the hot plastic film before laminating. This stretching can be done, for example, that the heated film is passed over a banana roll before laminating. This ensures that the heated film suffers an extension perpendicular to the running direction, which is set just as a function of the temperature and the expansion coefficient of the film so that the stretch is compensated after cooling of the film. Thus, after cooling, the film also exerts no force on the carrier film, so that a bowl can be prevented. Another way to avoid such a bowl, is also to heat the carrier film before laminating the heated plastic film. Furthermore, both a heated plastic film on the resistor layer and the conductor strips as well as applied to the back of the carrier film, so that a counter-pull is provided, whereby the forces exerted by both plastic films on the carrier film forces just compensate.

The invention will be explained in the following by describing inventively embodied insulating panels for the design of a surface heating system with reference to the accompanying drawings, wherein

1 in an insulation panel according to the invention in an end view,

2 in a plan view, the insulation board shown in Fig. 1,

3 is a detail view in the area A of Fig. 2,

4 shows a connection element in a side view,

5 shows a connection element for coupling two connection elements in the manner shown in FIG. 3, FIG.

6 shows a connection element for attachment to a strip conductor and

Fig. 7 shows an exemplary heating arrangement comprising insulation boards with heating function according to the invention and pure insulation boards shows.

In Fig. 1 an insulation panel 1 is shown with heating function in an end view. This comprises an insulating layer 10 made of an extruded polystyrene foam. The insulation layer 10 is rectangular and specifies the surface dimension of the insulation board 1 with heating function. On the insulating layer 10 a Heizverbundfolie 20 is glued, which has the same surface area as the Dämm- läge 10. An expedient measure is, for example 590 x 790 mm, wherein the thickness of the insulating layer in the example described is 3 mm. The Heizverbundfolie is composed of several elements. The basis is a carrier film 30, to which a resistance layer 40 is applied graphite-based by means of a doctor blade. On the longitudinal sides of the carrier film, the resistance layer is applied to just before the edge, so that a narrow longitudinal strip on the carrier film remains free, see Fig. 2. This measure is used in particular to avoid electrical contacts between heatable insulating panels, which after installation lie against one another on their long sides. Parallel to the longitudinal edge of the resistance layer and over its entire longitudinal extent two copper foils are glued with a conductive adhesive. The two copper foils and the resistance layer are covered with a plastic film 50. The entire Heizverbundfolie has a thickness of about 350 microns, wherein the carrier film in the example described has a thickness of 0.2 mm and the resistance layer of about 0.1 mm.

In the figures 1 and 2 only indicated are connecting elements 80 made of metal, which extend with a mounting portion through the carrier film, the resistive layer to the copper foil. In the described embodiment, attachment portions pierce the copper foil 50 and abut the copper foil on the side of the cover foil. As can be seen in FIG. 2, the attachment of the connection elements at the ends of the copper foils to them defines an electrical contact section to which the said connection elements are connected both electrically and mechanically to the heating composite foil. In the described embodiment, the connecting elements 80 are arranged on the insulating board with heating function so that they do not extend beyond the edge of the insulating layer 10 and thus are embedded between the Heizverbundfolie 20 and the insulating layer 10. At the two end faces of the insulating board 1, these can each be connected by means of the two connecting elements 80 of an end face to an adjacent insulating element. _l_ O plate with heating function can be connected electrically.

An exemplary construction of a connection element will be described below with reference to FIGS. 3 and 4. FIG. 3 shows detail A in FIG. 2 in a larger detail view, and FIG. 4 shows a single arm of FIG represents shown connection element. The connection element 80 is essentially composed of a transverse web 81 and two contact arms 82a, b extending longitudinally to the conductor strip. Each of these arms 82 a, b has a coupling section 84 a, b in the front area and a fastening section 83 a, b in the rear area. The coupling portion is formed in the described embodiment as a contact socket which receives a contact pin of a still to be described below connecting element. While the coupling section rests freely on the heating composite film, the fastening section extending from the coupling section is mechanically and electrically connected to the heating composite film 20. The connecting element shown in Fig. 3 is formed as a punching element and has a height of less than 1 mm. The use of two parallel contact arms which are connected to one another via a transverse web, on the one hand increases the mechanical and electrical contact with the relevant conductor strip, improves or simplifies the manual joining of the connection device and the connecting element and, moreover, increases the heat dissipation at the Contact point.

Fig. 4 shows the structure of a contact arm 82a in a side view. At the attachment portion 83 Crimpfortsätze or - Erme 85 are arranged, which serve for the described crimp attachment of the connection element 80 to the Heizverbundfolie 20. As already stated above, the crimp appendages extend through the carrier foil and the copper foil 50 and abut against the rear side of the copper foil to provide a good electrical contact between the connection element and the copper foil. A connecting element for electrically coupling two connecting devices to each other, which are arranged on two adjacent insulating boards with heating function, is shown in Fig. 5 in a perspective view. This is designed to cooperate with two such connection elements 80, as shown in Fig. 3. The connecting element 100 has in each case two oppositely extending contact pins 101, 103 from a central web 105; 102, 104 up. The distance between the contact pins 101, 102 or 103, 104 spaced perpendicular to the longitudinal direction corresponds to the distance of the two contact arms 82a, b of the connection device 80, see FIG. 3. The tongues 106, 107 extending between the contact pins and parallel to them Here, for holding the connecting element 100 during the manual insertion of the two pins in the contact bushes of the connection element 80. In the embodiment shown in Fig. 5, the connecting element in each case extending in the direction of the central web spring bar 108, 109, to each of which a latching lug 110, 111 is attached. These features will be discussed below with reference to FIG. 6.

As can be seen from the above, in the longitudinal direction one behind the other, that is, at the end faces juxtaposed plates electrically coupled with connecting elements 100 so that there is a parallel connection of the resistance layers of all coupled insulation boards.

Fig. 6 shows a second embodiment of a connection element, which in turn is designed for producing a contact with a conductor strip and for coupling with a connecting element. The connection element 90 shown in FIG. 6 cooperates with the connection element 100 shown in FIG. 5 to provide an additional strain relief. For clarity of illustration, the connecting element 90 is not shown connected to the Heizverbundfolie, but it has not shown Crimpfortsätze, which, as explained with reference to the connection element shown in Fig. 3, the ensure electrical and mechanical contact with the heating composite foil. The connecting element has two spaced contact sockets 91, 92 which are adapted to receive two contact pins 101, 102; 103, 104 serve, see FIG. 5. The connection element 90 has an L-profile-shaped sheet-metal part, on which the contact sockets 91, 92 are fastened. The base of the L-profile is arranged as a front plate 96 in front of the contact sockets, wherein holes 97, 98 in the front plate 96 with the openings of the contact sockets 91, 92 are aligned. Between these openings 97, 98 for the contact pins, a further opening 99 is provided into which the centering lance 106 extends when the connecting element 100 is joined to the connection device 90. As a result, a centering aid is provided, so that despite small contact pins, which may have an edge length of less than 1 mm, safely inserted into the associated contact sockets 91, 92.

As shown in Fig. 5, the two centering lances 106, 107 on a spring bar 108, 109, to which a latching nose 110, 111 is mounted, which when mating with the outer edge 99a of the opening 99 and when separating with the inner edge 99b the opening 99 cooperates. When merging the connecting element 100 with the connection device 90, the latching lug 110 or 111 strikes against the outer edge 99a, so that the connecting element 100 is inserted further into the connecting element 90 via an increased force application, wherein the spring bar 108 or 109 in the direction of Longitudinal axis of the connecting element 100 moves. As soon as the nose 110 or 111 is located behind the front plate 96, the spring bar springs back so that the connecting element clicks audibly. Connected to the latching is a latching situation in which the nose 110 or 111 of the connecting element 100 rests against the inner edge 99b of the opening 99, so that the connecting element can be pulled out of the connecting element 90 again only with an increased expenditure of force. Also, the connection element shown in Fig. 6 can as a stamped part with subsequent forming be made of a metal. The connecting element 100 can be produced by a single punching process from a metal sheet.

Fig. 7 shows an exemplary arrangement of the laying and electrical coupling of inventively designed insulation boards with heating function, which are connected to a power supply. Each bare rectangle represents an insulating board according to the invention with a heating function, whereby the rectangles marked with "X" represent only one insulating layer, that is to say the area marked in this way is not heated.The power supply is provided by a transformer 120 which processes mains voltage and these The transformer is controlled by a control device 130, which measures the temperature within a insulation board via a temperature sensor 140. Furthermore, the control device 130 is connected to a room thermostat 150, at which the room temperature is measured and the user has a setpoint temperature. In the described embodiment, the transformer 120 has three outputs, to each of which a parallel connection of seven or five insulation boards is closed.

The insulation panels coupled together at an output of the transformer are, as explained above, coupled to one another at their end faces by means of the connecting elements connected to the conductor strips and the connecting elements. However, since, for example, the rightmost parallel circuit in FIG. 7 extends over two rows, the connecting element shown in FIG. 5 can not be used for electrically connecting the two upper plates 1, 1 'lying adjacent to one another along their longitudinal edges. Instead, a double cable is used to contact the longitudinal side by side plates at the end faces for each Leiterstreifenkopplung that has at its four ends in each case a contact pin, wherein two pins are inserted into a connecting element according to FIG. 3 or 6. The laying and the electrical coupling of the inventively designed Däiranplatten done without tools. Only in such cases, in which pure insulation panels must be installed to fill a room surface, the use of a cutting device, such as a simple knife is necessary with which the pure insulation panels can be cut.

The controller 130 controls the outputs of the transformer 120 in response to an actual target temperature comparison. The actual temperature is a room temperature and the setpoint temperature is the desired room temperature set on the room thermostat. In order to prevent heat build-up, the temperature in the area of an insulation board is simultaneously monitored by a temperature sensor 140 and the power supply is switched off when a predetermined limit value is exceeded.

After installation of the surface heating system according to the invention, any free-floating hard floor can be placed, in particular a floor of laminate panels.

Insulating board with heating function and surface heating system

LIST OF REFERENCE NUMBERS

1 insulation board

10 Insulation layer 20 Hei zverbundfolie, Heizfolieneinrichtung

30 carrier film

40 resistance layer

50 conductor strips, copper foil

51 contact section 70 cover film

80 connection element

81 cross bar 82a, b contact arm

83a, b fastening portion 84a, b coupling portion

85 Crimpfort, Crimparm

90 connection element

91, 92 contact socket

95 L-profile 96 front panel

97, 98 opening

99 opening

99a outer edge of the opening 99th

99b inner edge of the opening 99 100 connecting element 101, 102, 103 contact pin

104 contact pin

105 middle bridge

106, 107 centering lance

108, 109 spring bar

110, 111 latch

120 transformer

130 control device

140 temperature sensor

150 room thermostat

Claims

Insulating board with heating function and surface heating system patent claims

1. Insulating board (1) with heating function, in particular for use as a support for panels such as floor laminate panels, with at least one layer (10) made of a dämmfähigen material on which designed as a resistance heating heating foil device (20) is mounted, wherein the heating foil device along the longitudinal edges thereof has two spaced-apart conductor strips (50), at the ends of each an electrical contact portion (51) is provided.

2. Insulating board according to claim 1, characterized ge kennz egg chnet, as s s at an electrical contact portion (51) of a conductor strip (50), an electrical connection means (80, 90) is mounted.

3. Insulating board according to claim 2, characterized ge kennz eichnet, the s comprises the electrical connection means a punching element.

4. Insulating board according to claim 2 or 3, characterized by a certainty that the electrical connection Device (80,90) has a fixing portion (83a, 83b) for attachment to the contact portion (51) of a conductor strip (50) and a coupling portion (84a, 84b) for electrically coupling the connection device with a connecting element (100).

5. Insulating board according to claim 4, characterized ge kenn z eichnet that s the electrical connection device is mechanically and electrically fixed in the region of its attachment portion by means of a crimp on the contact portion of the conductor strip.

6. insulating board according to claim 2, 3, 4 or 5, d a d u r c h e c e n e s in which the electrical connection device (80, 90) in the coupling portion (84 a, 84 b) at least one contact socket (91, 92) for receiving a contact pin provides.

7. Insulating board according to claim 6, characterized dadur ch ge marked that the contact socket (91, 92) merges into a fastening web in the attachment portion, which is fixed to a conductor strip.

8. Insulating board according to claim 6 or 7, characterized zei chnet, the s the electrical connection device in the coupling section spaced two, provides contact sockets, which each pass into a fastening web in the attachment portion (83 a, 83 b), at its, the coupling portion remote end , a web extending perpendicular to the longitudinal extension of the contact bushes (81) is arranged, which connects the two contact sockets and the two fastening webs electrically and mechanically.

9. Insulating board according to claim 7 or 8, characterized ge zei zei chnet, as ss the at least one web of the connection device (80) Crimparme (85) extending perpendicularly through a conductor strip (50) and abut on the opposite side to the conductor strip.

10. Insulating board according to claim 6, 7 or 9, characterized ge zei zei chnet, as ss the electrical connection device (90) in the coupling section two spaced-apart contact sockets (91, 92) provides, and in front of the contact sockets connected to the contact sockets front panel ( 96) is arranged, wherein the front plate has two openings (97, 98) which are aligned with insertion openings of the contact sockets.

11. Insulating board according to claim 10, characterized ge kennz eichnet, s the front panel has a third opening, the inner edge (99 b) cooperating with a connecting element (100) latching stopper (110, 111) cooperating to provide a strain relief.

12. Insulating board according to claim 6, 7 or 9, characterized ge egg z ei CHnet s s the front plate (96) is formed as the base of an L-shaped sheet metal part (95) det, on which the contact sockets (91, 92) attached are.

13. Insulating board according to one of claims 2 to 12, characterized in that the Heizfo- lieneinrichtung (20) comprises a, in particular plastic carrier film (30) on which a homogeneous layer is applied with conductive material to form a resistance layer (40), which runs in particular over substantially the entire areal extent of the carrier film.

14. Insulating board according to claim 13, characterized in that the two conductor strips (50) for providing a mechanical and electrical connection with the resistance layer (40) are placed on this.

15. Insulating board according to claim 13 or 14, characterized in that the s the heating foil device comprises a plastic film (70) which covers the resist layer and the conductor strips.

16. Insulating board according to one of claims 1 to 15, characterized in that the s the heating foil device attached to a self-supporting layer (10) of dämmfähigem material, in particular glued to this.

17. The insulation board according to any one of claims 2 to 16, wherein the electrical connection means (80) abut completely against the at least one layer of insulating material, so that the connection devices do not project beyond the edge of the layer of insulation material.

18. surface heating system with a plurality of juxtaposed and electrically interconnected insulation boards according to one of claims 1 to 17, in particular for use as a support for panels such as floor laminate panels and with connecting elements (100) for electrically connecting two adjacent arranged insulating panels, and a power supply.

19. Surface heating system according to claim 18, characterized in that the electrical connection element (100) has two conductively connected coupling sections, each for connection to an electrical connection. see connecting device are formed, which are arranged on two insulating boards to be electrically connected.

20. Area heating system according to claim 18, characterized in that each of the coupling sections of the connecting element has at least one contact pin for insertion into a contact socket on a connection device.

21. Surface heating system according to claim 18, 19 or 20, characterized ge zei zei chnet, as ss both coupling portions of the connecting element in each case two spaced and parallel extending contact pins (101, 102, 103, 204) for insertion into two spaced contact sockets on a connection device ( 80), wherein the contact pins extend from a central web (105).

22. area heating system according to one of claims 18 to 21, characterized in that in each case s is provided in both coupling portions of the connecting element between the contact pins and with these extending centering lance (106, 107).

23. surface heating system according to one of claims 18 to 22, characterized GE ge z e ichnet, as s s the connecting element (100) locking means which cooperates with a complementary locking means on a Anschlusseinrich- device (90) of an insulating board to provide a strain relief.

24 surface heating system according to claim 22 and 23, characterized ge egg chn egg, as ss the center lierlanze (106, 107) with a spring-mounted locking lug (110, 111) is provided.

25. surface heating system according to any one of claims 18 to 24, characterized by at a plurality of plates consisting of dämmfähigen material, which essentially have the same dimensions as the insulating panels with heating function for filling of surface portions in the pad without heating function.

26. Connecting element for use in a system according to one of claims 18 to 25.

27. A method for producing an insulating panel according to any one of claims 1 to 17, comprising the steps of:

Applying a resistance layer to a rectangular carrier foil,

- Applying two, each along a longitudinal edge of the carrier film extending conductor strips, in particular conductor foils, on the resistance layer;

- laminating a heated plastic film on the resistor layer and the conductor strips;

- Attachment of connection devices at the ends of the conductor strips; and

- Attaching at least one layer of insulating material to the carrier film.

28. Method according to claim 27, characterized in that the heated film is guided over a banana roller before being laminated.