ELECTRIC SURFACE TEMPERATURE CONTROL SYSTEM AND A LAYING DEVICE FOR A HEATING CABLE OF THE ELECTRIC SURFACE TEMPERATURE CONTROL SYSTEM

Abstract

Electric surface temperature control system for a floor, wall or ceiling construction, with at least one heating cable, with at least one carrier plate, which includes a first plate side, which is provided to rest on a ground and includes a second plate side, which is opposite the first plate side and is provided for receiving a contact agent, such as mortar or adhesive, and with a first functional layer arranged on the second plate side, and a second functional layer is provided on the heating cable at least in sections, said second functional layer is formed from a hook tape and the heating cable can be fastened on the carrier plate by the first functional layer and second functional layer with the formation of a hook-and-loop fastener.

Claims

1. A laying device for a heating cable of an electric surface temperature control system, with a handle, with a guide rod at one end of which the handle and, remote therefrom, a roller are provided on the guide rod, with a cable feed, through which the heating cable provided with a second functional layer is feedable to the roller and is unrollable along a guide on the roller and fastenable on a carrier plate, which has a first functional layer of a fibrous layer on a second plate side.

2. The laying device according to claim 1, wherein the guide rod is tubular and the cable feed is provided at least partially or completely in the guide rod and/or in that the cable feed is formed by at least one guide tab formed or arranged on the guide rod.

3. The laying device according to claim 1, wherein the guide rod has a guide portion for the heating cable which is formed by two tabs formed at the end of the guide rod and rotatably receiving the roller, or which has a curved end portion at the end facing the roller, which curved end portion points towards the guide of the roller.

4. The device according to claim 1, wherein the roller has a radius, which is at least larger than the distance between two recesses in the carrier plate.

5. The laying device according to claim 1, wherein a reel for supplying the heating cable is rotatably and/or preferably replaceably provided on the guide rod.

6. The laying device according to claim 5, wherein a through axle is provided on the guide rod at a right angle to its longitudinal axis, onto which the reel is positionable and preferably held with a securing member.

7. The laying device according to claim 5, wherein the heating cable pulled off from the reel is feedable to the cable guide through a feeding opening in the guide rod and is feedable to the roller in a manner guided in the end region of the guide rod through the tabs.

8. The laying device according to claim 1, wherein an insertion aid for the heating cable into the cable feed is provided at one end of the guide rod on the handle side.

Description

[0031] In the following, the invention and advantageous embodiments and further developments thereof are described and explained in more detail using the examples represented in the drawings. The features disclosed in the description and the drawings can be used individually per se or combined in any desired combination. In the drawings:

[0032] FIG. 1 shows a perspective representation of an electric surface temperature control system,

[0033] FIG. 2 shows a schematic sectional view of the electric surface temperature control system in an installation situation,

[0034] FIG. 3 shows a schematic sectional view of an alternative embodiment of the electric surface temperature control system in an installation situation,

[0035] FIG. 4 shows a perspective view of an alternative embodiment of a heating cable,

[0036] FIG. 5 shows a perspective view of a laying device,

[0037] FIG. 6 shows a schematic view from the front onto the laying device according to FIG. 4,

[0038] FIG. 7 shows a schematic side view of the laying device in use,

[0039] FIG. 8 shows a schematic view of an alternative embodiment of the laying device according to FIG. 5, and

[0040] FIG. 9 shows a schematic side view of the laying device according to FIG. 8 in use.

[0041] FIG. 1 shows a perspective representation of an electric surface temperature control system 5. This electric surface temperature control system 5 comprises at least one carrier plate 10 and at least one heating cable 6. Furthermore, the electric surface temperature control system 5 comprises a control and/or a thermostat to control the heating cable. This is not shown in more detail.

[0042] This carrier plate 10 comprises a film-like plate 11 made of plastic, which has a plurality of chambers 12, which are formed by recesses 14 in the film-like plate 11. The preferably unidirectionally aligned recesses 14 of the chambers 12 have a preferably repetitive arrangement in rows and columns or fixed patterns otherwise relative to each other. Surface portions 16 are formed between the recesses 14, which surface portions connect the chambers 12 to one another. Starting from these surface portions 16, conically tapering wall portions 18 extend according to the first embodiment, which merge into a floor 19, which form a first plate side 22 with an outer end face 21. A fabric or non-woven 23 is laminated or welded onto the end faces 21 of the chambers 12, which clamps the carrier plate 10 in a contact layer applied to a ground, such as an adhesive or a mortar. The fabric or non-woven 23 is preferably in the form of a net-like fabric, in particular a fine-meshed mesh fabric or a perforated non-woven fabric. Such a fabric can be made of polypropylene, for example.

[0043] A second plate side 26 is provided opposite the first plate side 22, which is formed by the surface portions 16 connecting the chambers 12 and the recesses 14. A first functional layer 27 made of a sheet-like material is applied to this plate side 26, which lines at least one inner side of the recesses 14 and is connected to this inner side. Preferably, this first functional layer 27 is also connected to the surface portions 16. Preferably, the second functional layer 27 is applied over the entire surface of the second plate side 26. Preferably, the first functional layer 27 is welded or laminated onto the film-like plate. In some cases, pressing or gluing on may also be provided. Thus, the first functional layer 27 comprises the same contour as the second plate side 26 of the carrier plate 10. According to a first preferred embodiment, the first functional layer 27 made of a sheet-like material is formed of a fibrous layer, a fine-meshed fabric, a scrim or a non-woven fabric, which may also be perforated. The first functional layer 27 is preferably a non-woven fabric made of polyethylene or polypropylene, for example. Likewise, the first functional layer 27 may have adhesion strengthening components. These can be formed, for example, in the form of glass fibres or granules that protrude at least partially from the surface of the first functional layer 27.

[0044] The heating cable 6 consists of a heating conductor 9, for example made of copper, and a sheathing 8, which forms an insulation. The sheathing 8 may consist of a polymer material. A second functional layer 7 is provided on the outer circumference of the heating cable 6. This second functional layer 7 can be a tape or strip-shaped material, which is formed as a hook tape on an outer side and comprises a contact surface for bonding to the sheathing 9 on an inner side. This second functional layer 7 may be held to the sheathing 9 by an adhesive bond. Preferably, at the functional layer 7, an adhesive layer or a double-sided adhesive tape is applied opposite to the hook tape. Alternatively, the sheathing 8 of the heating cable 6 may have a surface corresponding to a hook tape. Furthermore, instead of a helical or spiral wrap around the heating cable 6, the second functional layer 7, which is in the form of a band or strip, can alternatively be applied only longitudinally along the heating cable 6. Herein, the functional layer 7 may partially, for example by 60, 90, 180 or the like, or completely surround the sheathing 8. Also, two or more longitudinal strips, which are narrower than an outer diameter of the sheathing 8, may be provided in parallel to each other on the sheathing 8. These longitudinal strips may be provided in parallel to the longitudinal axis of the heating cable 6 or helically encircling on the heating cable 6.

[0045] The heating cable 6 can be laid both along the surface portions 16 and/or spanning the recesses 14 of the carrier plate 10. The formation of a hook-and-loop fastener on the surface portions 16 in front of and behind the recess 14 is sufficient to fix the heating cable 6 to the carrier plate 10.

[0046] FIG. 2 shows a schematic side view of the carrier plate 10 according to the invention in an installation situation. An adhesive or mortar 32 is applied to a ground 31, in particular screed. Subsequently, the film-like plate 11 with the fabric or non-woven 23 is laid on the ground 31. The mortar 32 clamps into the fabric or non-woven 23. The mesh size of the fabric or non-woven 23 or its perforation, if provided, is designed in such a way that, when the carrier plate 10 is laid, the mortar does not penetrate into regions 33, i.e. free spaces formed between the chambers 12, but it does clamp to the fabric or non-woven 23. This allows air to circulate in these open spaces.

[0047] An adhesive or mortar 34 is then applied to the second plate side 26. This mortar or adhesive 34 may also differ from the adhesive 32 applied to the ground 31. The mortar or adhesive 34 is thereby applied to the surface portions 16, the chambers 12 are filled, and the heating cable(s) 6 are surrounded by mortar or adhesive 34, so that preferably a flat and continuous bearing surface is formed by the mortar or adhesive 32 to receive and fix a surface covering 37 consisting of individual tiles or slabs 36. During the filling of the chambers 12 and the spreading of the mortar or adhesive 34 onto the surface portions 16, an interlocking of the adhesive or mortar 34 with this first functional layer 27 occurs due to the first functional layer 27. The laid position of the heating cable 6 on the carrier plate 10 is maintained by the hook-and-loop fastening formed between the first functional layer 27 on the carrier plate 10 and the second functional layer 7 on the heating cable. At the same time, so-called mortar bars can be formed in the recesses 14, via which a load transfer to the ground 31 takes place. After the plates 36 have been applied to form a surface covering 37 and the adhesive or mortar 34 has cured, joints 38 are introduced to complete the surface covering 37.

[0048] FIG. 3 shows an alternative embodiment of the carrier plate 10 according to the invention in an installation situation. The film-like plate 11 differs from the embodiment in FIG. 1 in that the chambers 12 have a perpendicular wall portion 18, thus forming cylindrical recesses 14. Otherwise, this embodiment corresponds to the embodiment according to FIGS. 1 and 2 and has the same advantages.

[0049] Alternatively to the design of the carrier plate 10 according to FIG. 1, the carrier plate 10 can be designed as a film-like plate made of plastic, which is flat. This alternative embodiment of the carrier plate is thus free of elevations and/or recesses 14. This carrier plate 10 may have the first functional layer 27 on the second plate side 26. Depending on the installation situation, the first plate side 27 may be provided with a third functional layer 23, in particular a mesh-like fabric, or may remain free of a third functional layer.

[0050] The carrier plate with the recesses 14 shown in FIGS. 1 to 3 also has the advantage of enabling uncoupling between the surface covering 37 and the ground 31 or the screed floor.

[0051] In FIG. 4, an alternative configuration of the heating cable 6 is shown in perspective. The structure of the heating cable 6 relative to the heating conductor 9 and the sheathing 8 corresponds to the above-described embodiment. In this embodiment, it is provided that the functional layer 7 is formed as a longitudinal strip, the width of which corresponds to an outer circumference of the sheathing 8. This second functional layer 7 completely surrounds the sheathing 8, so that a joint 15 running along the longitudinal axis of the heating cable 6 is formed by the two longitudinal sides of the second functional layer 7 formed as a longitudinal strip. This has the advantage that an improved adhesion is given opposite to the helical or spiral arrangement of the second functional layer 7 in applying to the carrier member 10 according to the embodiments in FIGS. 1 to 3. This complete sheathing 8 of the heating cable 6 by the second functional layer 7 does not adversely affect the laying direction or the type of laying of the heating cable 6, which preferably takes place in a meandering fashion.

[0052] FIG. 5 shows a perspective view of a laying device 50 for the heating cable 6 of the electric surface temperature control system 5. FIG. 6 shows a top view of the laying device 50 according to FIG. 5. The laying device 50 comprises a guide rod 51. A handle 52 is provided at one end of the guide rod 51. A roller 53 is arranged at the opposite end of the guide rod 51. This roller 53 can be rotatably received by a uniaxial holder 54, wherein the holder 54 is fastened to the guide rod 51. The roller 53 preferably has a guide 56. This guide 56 can be designed as a circumferential ridged groove. This guide 56 is preferably arc segment-shaped or semi-circular viewed in the cross-section. The size of the guide 56 is adapted to the outer diameter of the heating cable 6, so that during the unrolling of the heating cable 6 on the roller 53, a lateral hold of the heating cable 6 is provided by the roller 53.

[0053] A stand 58, for example in the form of a plate, may be provided in the guide rod 51 or the holder 54. This allows the laying device to assume an upright standing position when not in use.

[0054] The guide rod 51 is preferably designed as a tube. Thus, a cable feed 57 can be enabled within the guide rod 51. For example, the heating cable 6 is inserted into the guide rod 51 at the handle 52 and exits at the end of the guide rod 51 adjacent to the roller 53. Advantageously, an insertion aid for the heating cable 6 can also be provided on the handle 52 in the opposite direction to the guide rod 51.

[0055] At the front end of the guide rod 51, which is aligned with the roller 53, the guide rod 51 preferably has a curved area. The curvature is preferably adapted to the radius of the roller 53.

[0056] The laying device 50 makes it easy to lay the heating cable 6 on the carrier plate 10. This is shown in FIG. 7, for example. The heating cable 6 is preferably wound on a cable drum. This can make unrolling and laying easier. The cable drum can stand remotely on the floor or be carried by a worker; for example, in the form of a backpack. A first cable end is passed through the guide rod 51 and wrapped around the roller 53 and secured to the carrier plate 10. In this case, a hook-and-loop connection is created between the second functional layer 27 on the carrier plate 10 and the first functional layer 7 on the heating cable 6. Subsequently, the laying device 50 can be moved by means of the handle 52, wherein the roller 53 rolls on the carrier plate 10 and the heating cable 6 can be continuously fastened in position to the carrier plate 10, forming hook-and-loop fasteners. The course of the heating cable 6 on the carrier plate 10 within the room can be determined as desired or adapted to the cut and/or other circumstances. After laying the at least one heating cable 6 on the carrier plate(s) 10, the two ends of the respective heating cable 56 are attached to the control unit and connected to it; for example, for a function test. The surface covering 37, i.e. the application of the mortar 34 and the plates 36, can then be laid.

[0057] FIG. 8 shows a schematic view of an alternative embodiment of the laying device 50. FIG. 9 shows the laying device 50 according to FIG. 8 in a use position for laying the heating cable 6.

[0058] The laying device 50 comprises a guide rod 51, which is preferably tubular. At the upper end of the guide rod 51, the handle 52 is provided. Opposite thereto, at the other end of the guide rod 51, a roller 53 is received. In this embodiment, it is provided that the end of the guide rod 51 receiving the roller 53 is formed by two tabs 61 oriented in parallel to each other, which receive a rotation axle 62 for supporting the roller 53. On the guide rod 51, a reel 65 is preferably rotatably supported. This reel 65 is preferably supported replaceably to the guide rod 51, particularly by the through axle 67. This through axle 67 is fastened to the guide rod 51. Preferably, the through axle 67 is oriented at a right angle to the longitudinal axis of the guide rod 51. Onto this through axle 67, the reel 65 may be plugged in a replaceable manner. Preferably, a securing member 68 such as a securing split pin, for example, is provided to secure the reel 65 to the through axle 67. The reel 65 is preferably arranged in an upper half of the guide rod 51. Preferably, the reel 65 is arranged in a region within half a length of the guide rod 51 from the handle 52. In the exemplary embodiment, the reel 65 is supported resting on top of the guide rod 51. Alternatively, the reel 65 may also be supported hanging on the lower side on the guide rod 51.

[0059] The heating cable 6 to be laid is pulled off from the reel 65 and fed to a feeding opening 71 in the guide rod 51. This feeding opening 71 may be formed in the form of an elongated hole. Thereafter, the heating cable 6 in the cable feed 57 is guided to the tabs 61 in the guide rod 51. Subsequently, the heating cable 6 is guided through the tabs 61 und fed to the guide 56 on the roller 53. Preferably, the heating cable 6 is guided only in an end region in the cable feed 57 associated with the roller 53.

[0060] Alternatively, it may be provided that, instead of the above-described internal guide of the heating cable 6, holding tabs attached in the lower region of the guide rod 51 on the outer side of the guide rod 51 are provided. The holding tabs may be formed in an annular or U-shape in order to guide the heating cable 6 between the holding tab and the guide rod 51 or only in the holding tab.

[0061] The reel 65 may have an H-shaped cross-section, as shown in FIGS. 8 and 9. It comprises upper and lower cover plates 73, 74 as well as pins 56 arranged therebetween in order to receive the heating cable 6 in a circularly wound form. Alternatively, otherwise structured reels may also be provided.