WO2007073880A1

WO2007073880A1 - Electrically operable surface heating element arrangement, in particular in the form of a floor surface heating element arrangement

Info

Publication number: WO2007073880A1
Application number: PCT/EP2006/012077
Authority: WO
Inventors: Daniel Huber
Original assignee: Moletherm Holding Ag
Priority date: 2005-12-16
Filing date: 2006-12-14
Publication date: 2007-07-05
Also published as: DE202005019835U1; EP1963751A1

Abstract

The surface heating element arrangement, in particular a floor surface heating element arrangement, has a plurality of surface heating elements (2), which in turn have an electrically active heating layer (5), which is delimited by two electrically conductive conductor strips (7). The surface heating elements (2) are arranged next to one another in longitudinal rows (16) corresponding to the alignment of the conductor strips (7), wherein at least two such longitudinal rows (16) are arranged in a row next to one another in the transverse direction. An electrical control device, for power supply and control purposes, is electrically connected with a first pole to one conductor strip of a surface heating element (2) and with a second pole to the other conductor strip of this surface heating element (2). According to the invention, in each case one connecting part (8, 9) of an electrical connecting element (10) is arranged at the surface heating elements (2) for a longitudinal connection. Furthermore, transverse connectors (11) for transversely connecting adjacent surface heating element rows (2) are provided, wherein the transverse connectors (11) are arranged at one or both free row end sides of the longitudinal rows (16) of elements, and are each connected with their connecting parts (8', 9'; 8', 9') to conductor strips which are electrically assigned to the same pole and to their connecting parts (8, 9) there of the longitudinal row of elements connected to the control device (17a, 17b) and of the transversely adjacent longitudinal row of elements.

Description

description

Electrically operable Flächenheizelement Anordnunq, in particular as a floor-Flächenheizelement arrangement

The invention relates to an electrically operable Flächenheizelement arrangement, in particular as a floor-Flächenheizelement arrangement according to the preamble of claim 1.

An electrically operable Flächenheizelement arrangement as wall-Flächenheizelement arrangement is known (EP 1 135 970 B1). For this purpose, a plurality of the same, rectangular surface heating elements are used, each consisting of a base plate with an electrically active heating layer mounted thereon, which is bounded by two parallel, peripheral electrical conductor strips and with a top-side protective film. Surface heating elements are lined up in element longitudinal rows according to the orientation of the conductor strips along, wherein more element longitudinal rows are also lined up in the transverse direction, so that a kind of checkerboard pattern arises. An electrical control unit for power supply and control is electrically connected to a first pole with a conductor strip of a surface heating element and with a second pole to the other conductor strip.

As the electrically active heating layer, a coating of a coating material is used concretely, which essentially emits an electromagnetic radiation in the infrared range, especially in the non-visible infrared range. The coating material contains certain mole fractions of graphite and an insulating carbon black and other ingredients. In particular, the control unit supplies the energy for an excitation of the coating and for its electrical Radiation. The radiation-active coating is mounted on a non-electrically conductive base plate. The electrical connection between a mains connection, a control unit and the surface heating elements is made via cables which run on the wall surface and are connected to one another via junction boxes. Such wiring is to be designed individually according to each individual arrangement and therefore expensive to manufacture. Standardized electrical connectors are not used.

In contrast, the object of the invention is to further develop a generic electrically operable surface heating element arrangement such that a cost-effective, safe and easily assembled electrical connection for variable surface heating element arrangements is possible.

This object is achieved with the features of claim 1.

According to claim 1, a connecting part of an electrical connecting element is preferably arranged at the corner regions of the surface heating elements, which is fixedly connected to the surface heating element and with contact to the associated longitudinal end of the electrical conductor strip. For electrical connection in the longitudinal direction lying surface heating elements of an element longitudinal row, or their conductor strips, the one after the series design mutually associated or adjacent connecting parts are each joined together to form an electrical connection element.

Such an element longitudinal row can be connected directly to the control unit with its two conductor strips. Surface heating elements of lying transversely longitudinal element longitudinal rows can also be easily electrically connected to their connecting parts by joining to fasteners in the longitudinal direction; a connection to the controller and thus an electrical power supply is not yet established.

In order to produce such a connection, transverse connectors are provided, as elongated electrical conductors, at the ends of which are connected to the connecting parts on the surface. heating elements compatible electrical connection parts are mounted. These cross connectors can be arranged on one or both opposite free row end edges of the element longitudinal rows, where in each case the two still free connection parts of the row last surface heating element are located. To produce the electrical connection, a cross-bridge between the same pole electrically associated conductor strip is made with one or optionally a plurality of cross connectors. If, for example, in a plan view of transversely juxtaposed element longitudinal rows, the respective right conductor strips should have a same particular pole for the energy supply, the controller will only be connected to a conductor strip of an element longitudinal row. The electrical connection to the pole associated, longitudinal and interconnected conductor strips of the other longitudinal element rows is made by the cross connector.

These cross connectors can be standardized components and components of a mounting kit with surface heating elements. The electrical connection is easy, fast and safe to perform even by a non-specialist. Among other things, this contributes to the fact that a cross connector represents only a single line (no multi-core cable possibly with branching) and thus its use for a further connection in the transverse direction to adjacent homopolar conductor strips is also manageable for a non-expert.

Claim 2 claims a particularly preferred construction of the surface heating element with a carrier film and preferably an upper-side protective film, wherein the carrier film together with the heating layer and possibly the protective film is preferably applied directly to the base plate and preferably forms a handleable composite component therewith. Together with the carrier film and the protective film together, the heating layer can be functionally reliably protected against damage, in particular against moisture absorption.

The conductor strips are preferably arranged on the edge side of the surface heating according to claim 3 in order to form the largest possible heating surfaces. In In this case, then, the connecting parts of the respective electrical connection elements are located at the corner regions of the surface heating elements.

With claim 4 it is proposed that at each end of a cross connector, not only a connecting part, but two connecting parts are mounted as double connection parts. As a result, a further transverse connector for an additional, optionally required, transverse connection can be simply arranged and electrically connected to a cross connector. A connection part may be used for connection to a surface heating element, wherein the second connection part located at the same location and electrically connected to the first connection part is available for the connection of a further transverse connection. This is a great variability in the continuation of the electrical connections across the rows of elements given, even in the case that are used in the element rows base plates without heating layer as filling elements.

In a first specific embodiment of a transverse connector with double connection parts according to claim 5, it is provided that the first connection part and the second connection part are arranged on opposite longitudinal sides of the transverse connector, preferably with opposite orientation and preferably approximately in the longitudinal direction in the mounted state aligned. This makes an overall compact construction of the cross connector possible.

Alternatively, it is provided according to a specific embodiment according to claim 6, that the two connecting parts lie on one side of the cross connector, thereby reliably, for. B. in conjunction with copper strips can be avoided as electrical conductors that the copper strips cover the connecting elements of an adjacent cross connector, which could possibly lead to chafing of the foil insulation and thus to a short circuit with permanent mechanical stress.

In a particularly preferred embodiment according to claim 7, the cross-connector as standardized components have a length approximately corresponding to the width or the transverse extent of a Flächenheizelements. As a result, an elongated transverse connector with a conductor strip of an element longitudinal row and the corresponding conductor strip of a respective transversely adjacent element longitudinal row can be connected to save space and with a good visual impression. In principle, transverse connectors in the length of an integer multiple of such a width could be offered, which would then span a plurality of element rows correspondingly elongated.

In a particularly preferred embodiment according to claim 8, the connecting elements are plug-and-clamp connectors, wherein the associated connection parts are, on the one hand, plug-in shoes as clamping shoes and, on the other hand, plug-in pins and / or plug-in tongues. Such plug-and-clamp connectors are known per se stable, functionally reliable and easy to install electrical connection elements. Since the connection technology should have as little height, a flat connector is proposed with claim 9 as a plug-and-clamp connector, each with a flat plug shoe and an associated tongue.

According to claim 10, the plug-in shoes and plug pins and / or tabs to be aligned in the direction of the line strip or the element longitudinal rows. In this arrangement, the electrical plug-and-press connection of the surface heating elements can be produced in a simple manner in the longitudinal juxtaposition of the surface heating elements.

According to claim 11, it is expedient to make uniform the arrangement of the plug-in shoes and plug pins or tabs on the corner regions of the surface heating elements, two plug-in shoes being provided on one end or broad side and two insertion tongues on the other end or broad side. In principle, a combination plug-in / tongue on a broad side of a surface heating element is possible. The arrangement should in any case help to make the electrical connections as manageable as possible, in particular with additional cross connectors, and, if appropriate, make them safe from polarity reversal. According to claim 12 also contributes to that on the cross connectors on both sides in each case as a double connection part, a unit of a plug shoe and a tongue is attached, which are opposite and are aligned in the mounted state approximately in the longitudinal direction.

For the lowest possible height structure according to claim 13, the elongated electrical conductor of a cross connector is formed as a flat conductor. In this case, a copper strip is preferably introduced as an electrical conductor between two film strips. Depending on the size of the room and the desired heating power results in a different required number of electrically active Flächenheizelementen, d. h., That in a floor usually not the entire floor surface is designed with electrically active Flächenheizelementen. Instead of surface heating elements with an electrically active heating layer, filling plates of the same geometric dimensions are then expediently additionally used to obtain an overall flat surface (claim 14). Just for such an arrangement with filler plates results in the use of cross connectors simple connection options among the electrically active surface heating.

When using the Flächenheizelementanordnung as underfloor heating, it is expedient according to claim 15, the base plates and optionally filling plates form as impact sound insulation panels.

According to claim 16 to be used in a conventional manner as a strip conductor flat copper strips, which are mounted on or below the electrically active heating layer for contacting. A film can be laminated on as a mechanical protective film and electrical insulation via the conductor strip and the heating layer.

According to claim 17, the electrically active heating layer is a thin-walled coating known per se as an active infrared-radiating radiant heater coating, which is expediently applied to a carrier film which is connected to the base plate. The Flächenheizelement arrangement should be operated according to claim 18 in safety-critical uncritical range of low voltage voltages below 50 volts, preferably at 24 volts. Thus, the arrangement is particularly suitable for installation and operation by non-professionals.

Depending on the size of the surface heating elements, it may be expedient according to claim 19 to divide the electrically active heating layer mounted thereon in areas which are spaced apart in the longitudinal direction of the overlying conductor strips.

Reference to a drawing, the invention is explained in detail.

Show it:

1 shows an electrically operable floor-Flächenheizelement arrangement with three different alternatives A, B, C,

2 shows two electrically connected in the longitudinal direction surface heating elements,

3 is a longitudinal section through a portion of a Flächenheizelements,

4a, b are plan views of two different embodiments of a cross connector,

Fig. 5 is a side view of the cross connector of Fig. 4a, and

Fig. 6 is a perspective view of the cross connector of Fig. 4a.

In Fig. 1, a floor-Flächenheizelement arrangement 1 is shown, with three different, exemplified installation arrangements A, B, C. From Figures 2 and 3, the structure and the electrical longitudinal connection of the used in each case the same rectangular surface heating elements 2a, 2b can be seen. The surface heating elements 2a, 2b consist of a base impact sound insulation panel 3, an overlying carrier film 4, on which an electrically active heating layer 5 is applied as a coating. The top is covered by a protective and insulating film 6.

The electrically active heating layer 5 is bounded by two parallel edge-side electrically conductive conductor strips 7a, 7b. These are designed as copper strips and cover for an electrical contacting the electrically active heating layer. 5

At the corner regions of the surface heating elements 2 a, 2 b each electrically conductive connecting parts are attached as a plug-in shoe 8 and tongue 9 of a tab 10 for a plug-and-clamp connection. The plug-in shoe 8 and the tongue 9 are in the illustrated embodiment on the respective transverse edge of the surface heating 2a, 2b and are firmly connected to a connection area with the base plate and the associated conductor strip. For this purpose usable connection techniques are known.

In the enlarged partial view of Fig. 2 it can be seen that the surface heating elements 2a, 2b are indeed lined up in the longitudinal direction, but the tab 10 is not yet mated. For an electrical connection of the longitudinally adjacent conductor strips 7a, 7b, the surface heating elements 2a, 2b are merely pushed together so far that the tongue 9 is received in the socket 8. In the illustrated embodiment, a transverse gap then remains corresponding to the free projection of the plug shoe 8. If this is not tolerated, the plug shoe 8 or the tongue 9 are set back by their longitudinal extent in the surface area of the respective surface heating element, where appropriate, a saving is provided.

The electrical connection of the respective conductor strips 7 of surface heating elements 2, which are lined up in the longitudinal direction to element longitudinal rows, is thus easy in connection with the juxtaposition by making the intended plug contacts of the tabs feasible.

For the production of the electrical connections further cross-connector 11 are used, two of which are shown in more detail by way of example in Figures 4a and 4b:

The cross connector 11 is designed in each case as a flat conductor such that between two film strips as a carrier film 12 and cover sheet 13, a copper strip 14 is introduced as an electrical conductor. At the end sides of the cross connector 11 are electrical double connection parts 15a, 15b respectively as a unit of a plug shoe 8 'or 8 "and a tongue 9' or 9" attached and contacted with the copper strip 14. The plug-in shoes 8 'and 8 "as well as the tongue 9' and 9" respectively are directed in opposite directions in both embodiments and, in the assembled state, are aligned approximately in the longitudinal direction of an element longitudinal row. The patch shoes 8 'and 8 "and the tabs 9' and 9" respectively correspond to those used on the surface heating elements 2a, 2b and are compatible therewith. The difference between the embodiments of FIGS. 4a and 4b is that, in the embodiment of FIG. 4a, the plug-in shoes 8 'and the tongues 9 ¹ forming the respective double connection part 15a and 15b lie on opposite sides with respect to the longitudinal direction of extension of the copper strip in the embodiment according to the embodiment of Fig. 4b, the patch shoes 8 "and tabs 9", which are associated with each other, lie on one side of the copper strip 14 of the cross connector. Thus, different, concrete connection options can be realized in a simple manner functionally reliable. In the embodiment according to FIG. 4b, the respective double connecting parts 15a and 15b can be fastened to the end of the respective transverse connector 11, e.g. B. preferably by crimping, in such a way that after a z. B. Abwinklung the transverse connector ends they are aligned in the desired position and extension direction. Alternatively, it may of course also be provided in connection with an embodiment according to FIG. 4b that the transverse connector has approximately a U-shaped form, so that then the respective double connection parts 15a and 15b are fastened to the U-legs. Different electrical connection possibilities in connection with cross connectors 11 are explained by way of example with reference to the laying arrangement versions A, B ₁ C according to FIG. 1:

In version A eight surface heating elements 2 are laid in three longitudinal element rows 16a, 16b, 16c. Two cables 17a, 17b shown schematically lead from a control unit (not shown) for supplying energy to the respectively opposite conductor strips of the central element longitudinal row 16b. As a result, all mated surface heating elements of the central element longitudinal row 16b are electrically connected to one another and to the control device (not shown). The electrical connection to the conductor strips of the further element longitudinal row 16a is effected by transverse connectors 11a, 11b on the transverse side in the region of the control unit connection, with the cross connector 11a the respective left lying strip strips and with the cross connector 11 b each lying on the right conductor strips be connected in the manner of a bridge. For this purpose, the cross connectors 11a, 11b are plugged onto the local plug-in elements exposed at the corner regions of the surface heating elements. Accordingly, on the opposite transverse side, the electrical connection is made with cross connectors 11c and 11d to the third element longitudinal row 16c. The electrical connection is required at this point, since at the beginning of the third element longitudinal row 16c a filling plate 18 is used without electrically active heating layer and without conductor strip.

The arrangement version B largely corresponds to the arrangement version A, but at the side of the feed from the (not shown) control unit via the cables 17a, 17b shown schematically two adjacent filler plates

18a, 18b are arranged. The connection to the control unit is therefore carried out here on the third longitudinal element row 16 c, wherein the cables 17 a, 17 b may be infected with corresponding connecting elements to the associated surface heating element. The respective right conductor strips of the elementary longitudinal rows

16a, 16b, 16c are connected by the cross connectors 11e and 11f. The respective left conductor strips are connected to cross connectors 11g, 11h. This is also in the arrangement version B of each of the surface heating elements supplied with electrical energy.

In the arrangement version C, by way of example, eight surface heating elements are mounted, with six surface heating elements lying in a longitudinal row 16b and two surface heating elements lying in a longitudinal row 16a aligned transversely thereto. The electrical supply from the (not shown) control unit takes place on a triple arrangement of the element longitudinal row 16b. Thereafter, transverse connectors 11 i, 11 k are inserted for electrical connection to the conductor strips of the two surface heating elements from the element row 16 a.

As can be seen by electric cross-bridging with cross connectors 11 surface heating elements in different laying patterns, which are not limited to the arrangement versions A ₁ B, C, with each other for a power supply connectable. On such Flächenheizelement arrangements as a floor heating then a custom floor covering can be laid as a wear layer individually.

Claims

claims

1. Electrically operable Flächenheizelement arrangement, in particular as a floor-Flächenheizelement arrangement,

with a plurality of identical, rectangular surface heating elements (2), which have a base plate (3) and an electrically active heating layer (5) which is delimited by two electrically conductive conductor strips (7),

wherein the surface heating elements (2) in element longitudinal rows (16) according to the orientation of the conductor strips (7) are lined up along each other and at least two such element longitudinal rows (16) are lined up in the transverse direction, and

wherein an electrical control device for power supply and control with a first pole is electrically connected to a conductor strip of at least one surface heating element (2) and to a second pole to the other conductor strip of this surface heating element (2),

characterized,

in that in each case a connecting part (8, 9) of an electrical connecting element (10) is arranged on the surface heating elements (2), which is firmly connected to the surface heating element (2) and to the associated longitudinal end of the electrical conductor strip (7), wherein for the electrical connection of longitudinal surface heating elements (2) of an element longitudinal row (16) the mutually associated connecting parts (8, 9) of this surface heating elements (2) are each joined together to form a connecting element (10),

in that transverse connectors (10) are provided for the electrical connection of an electrically longitudinally connected element longitudinal row directly connected to the control unit with a further longitudinal row of elements, not directly connected to the control unit, in the transverse direction;

that the transverse connectors (11) are elongated electrical conductors, at the ends of which electrical connecting parts (8 ¹ , 9 '; 8 ", 9") compatible with the connecting elements (8, 9) are attached to the surface heating elements (2), and

the transverse connectors (11) are arranged on one or both free row end faces of the longitudinal element rows (16) and in each case with their connecting parts (8 ', 9', 8 ", 9") with conductor strips which are electrically connected to the same pole and their connection parts there (8, 9) connected to the control unit (17a, 17b) element longitudinal row and the transverse adjacent element longitudinal row are connected.

2. surface heating element arrangement according to claim 1, characterized in that the heating layer (5) on a carrier film (4) is applied, preferably together with an upper-side protective film (6), and

in that the carrier film (4) together with the heating layer (5) and possibly the protective film (6) is applied directly or indirectly to the base plate (3) and preferably forms a composite component therewith.

3. surface heating element arrangement according to claim 1 or 2, characterized in that the heating layer (5) of two parallel, the edge side of the surface heating element (2) arranged conductor strip (7) is limited, so that the

Connecting parts (8, 9) of the respective electrical connection elements (10) at the corner regions of the surface heating elements (2) lie.

4. Flächenheizelement arrangement according to one of claims 1 to 3, characterized in that at each end of a cross connector (11) in each case two electrically interconnected connecting parts as double connection parts (15a, 15b) are mounted, so that at a cross connector (11) a further cross connector (11) for an additional cross-connection, if necessary, can be arranged and connected electrically.

5. Flächenheizelement arrangement according to claim 4, characterized in that a first connecting part (8 ') and a second connecting part (9') of the double connection part (15 a, 15 b) - with respect to the longitudinal direction of the respective cross connector (11) - opposite longitudinal sides of the cross connector (11) lie, wherein the two connecting parts (8 \ 9 ') are preferably opposite and in the mounted state are preferably aligned approximately in the longitudinal direction of the row.

6. surface heating element arrangement according to claim 4, characterized in that a first connecting part (8 ") and a second connecting part (9") of the double connection part (15a, 15b) on a - related to the longitudinal direction of the respective cross connector (11) - same Longitudinal side of the cross connector (11) lie, wherein the two connecting parts (8 ", 9") are preferably opposite and are preferably aligned in the mounted state approximately in the longitudinal direction of the row.

7. surface heating element arrangement according to one of claims 1 to 6, characterized in that the transverse connectors (11) have a length approximately corresponding to the width or transverse extent of a surface heating element (2).

8. surface heating element arrangement according to one of claims 1 to 7, characterized in that the connecting elements are plug-clamp connector and the associated connecting parts on the one hand clamping shoes (8 ¹ ; 8 ") and on the other hand plug pins and / or tabs (9 ';") are.

9. surface heating element arrangement according to claim 8, characterized in that the plug-and-clamp connectors are designed as tabs, each with a Flachsteckschuh and an associated tongue.

10. Flächenheizelement arrangement according to claim 7 or 9, characterized in that the plug-in shoes (8 ¹ ; 8 ") and plug pins and / or tabs (9 ', 9") in the direction of the line strips (7) are aligned.

11. surface heating element arrangement according to one of claims 8 to 10, characterized in that at transversely opposite corner regions of a first

2) plug-in shoes (8 '; 8 ") and plug pins or tabs (9', 9") are arranged on the transversely opposite corner regions of an end face of this surface heating element (2) opposite the first end face.

12. Flächenheizelement arrangement according to one of claims 4 to 11, characterized in that on the cross connectors (11) on both sides in each case as a double connection part (15a, 15b) is a unit of a plug-in shoe (8 ', 8 ") and a tongue (9' ; 9 ") is mounted, wherein these are opposite and are aligned in the assembled state approximately in the longitudinal direction of the row.

13. surface heating element arrangement according to one of claims 1 to 12, characterized in that the elongated electrical conductor of a cross connector (11) is designed as a flat conductor and preferably a carrier film (12) and optionally a cover film (13), between which a electrical conductor, preferably a copper strip (14) is introduced, with which the end-side electrical connection parts (8, 9) are contacted.

14. surface heating element arrangement according to one of claims 1 to 13, characterized in that in element longitudinal rows (16) instead of surface heating elements (2) filling plates (18) of the same size are used.

15. surface heating element arrangement according to one of claims 1 to 14, characterized in that are used as base plates (3) and optionally as filler plates (18) drywall or insulation boards, in particular impact sound insulation panels.

16. Flächenheizelement arrangement according to one of claims 1 to 15, characterized in that the conductor strip (7) flat copper strips are used, which are mounted on or below the electrically active heating layer (5).

17. surface heating element arrangement according to one of claims 1 to 16, characterized in that the electrically active heating layer (5) is a thin-walled coating as an active infrared radiating radiant heater coating.

18. Flächenheizelement arrangement according to one of claims 1 to 17, characterized in that the electrically active heating layer (5) is operated with a low-voltage less than 50 volts, preferably 24 volts.

19. surface heating element arrangement according to one of claims 1 to 18, characterized in that the electrically active heating layer (5) on a surface heating element (2) is divided into surface areas, which are spaced apart in the longitudinal direction of the overlying conductor strips (7) ,