DE3111348A1 - Device for securing heating pipes and/or reinforcing grids, in particular for floor-heating systems - Google Patents

Abstract

The invention relates to a device for securing floor-heating-system pipes at a distance from an underlying floor and at least one reinforcing grid at a distance from the underlying floor, said reinforcing grid being arranged between the floor-heating-system pipes and the underlying floor. According to a modification, the device according to the invention has an extension piece, as a result of which the heating pipes can be provided at a greater distance from the underlying floor and, if appropriate, a further reinforcing grid can be provided. By arranging the floor-heating-system pipes as near as possible to the surface of the screed to be filled, a very low resistance to heat transmission is achieved. <IMAGE>

Description

THERMOVAL underfloor heating development and research company mbH, Vienna

Device for holding heating pipes and / or reinforcement grids, in particular for underfloor heating

The invention relates to a device for holding heating pipes and / or reinforcement grids, in particular for Underfloor heating, consisting of a foot section and a pipe support section.

A holder of the type mentioned is already known from DE-OS 28 24 936 and has a Rohrhaiterungsabschnitt and a foot section, grooves for inserting reinforcing steel being provided in the area of the foot section are. This known device has the disadvantage that the reinforcement grid or welded wire mesh is only slightly Can be arranged at a distance from the subfloor, since the foot section of the support of the reinforcement

ungsgitter serves. In addition, the heating pipes can only be arranged at a small distance from the sub-floor because the legs of the pipe support section connect directly to the foot section and only lie at a low level in relation to the sub-floor. If the heating pipes are in If a greater distance to the sub-floor is to be laid, the legs would have to be lengthened, resulting in an unstable Bracket leads. Another disadvantage of the known device can be seen in the fact that the insertion grooves for the reinforcement grid lie at different heights and care must be taken as to how the mounting element under the structural steel mesh must be used so that the structural steel below is in the lower insertion groove and the upper structural steel in the upper insertion groove comes to rest.

The invention is based on the object of creating a device of the type mentioned at the outset, which is simple Can be used in a way and to hold at least one reinforcement grid and heating pipes at a distance from the sub-floor is usable.

This object is achieved in that the Foot section and the Rohrhaiterungsabschnitt separate and are pluggable parts.

Further refinements of the invention emerge from the Subclaims.

According to the invention, mounting elements for heating pipes used, which keep the heating pipes at a distance above the insulating layer and also the use of Reinforcement grids or welded wire mesh in such an arrangement allow the reinforcement grid at a distance from the insulating Layer between this insulating layer and the heating pipes. In this way, the Heating pipes compared to known floor constructions in

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smaller distance to that caused by the setting or hardening Medium formed surface provided so that the height of the hardening or hardening medium between the top of the heating pipes and the soil surface formed by the medium becomes relatively small and thereby the thermal resistance is reduced.

If necessary, through the use of the Üewehrungsgi ttt; r the total height of the medium embedding the heating pipes and the reinforcement grids compared to known floor constructions be reduced.

The setting or hardening medium is formed, for example, by a screed, which after the arrangement the support elements, the reinforcement mesh and the Heating pipes with embedding the latter is applied to the insulating layer.

The device according to the invention is advantageously in two parts and consists of a pipe support section and a foot section that can be plugged together. Before laying the heating pipes, the reinforcement grids are made placed on the heat insulating layer using the foot portions of the device, the reinforcement grids as a result of the foot sections each Device come to lie at a distance from the heat-insulating layer.

Preferably the foot portions of each device

used in such a way that they the reinforcement grid at crossing points supported by reinforcing bars. The pipe support sections are then attached to the foot sections attached so that the reinforcement grids in the area of the intersection of reinforcing bars in each device can be used while maintaining a distance from the heat-insulating layer.

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The foot sections of each device can be any size; preferably they have such a foot surface, that an indentation into the heat insulating layer is excluded. This ensures that even when loading. If the reinforcement grid goes during the installation of the heating pipes, damage to the heat-insulating layer is excluded is.

The devices according to the invention can be used both for the use of heating pipes with a circular cross-section also be designed from heating pipes with an elliptical cross-section, with the Rohrhaiterungsabschnitt accordingly is designed to accommodate either heating pipes with a circular or oval or elliptical shape.

For the safe recording of the intersections, i.e. the intersection points forming reinforcing steel of reinforcing grids, the foot section has slots so that the respective Node within the upright part of the foot section comes to rest. The pipe support section is provided with side legs which rest on the bottom surface of the foot section after the assembly of the pipe support section and the foot section come to rest in a supportive manner.

According to a further embodiment, at least one intermediate piece is provided, which between the foot section and the Rohrhaiterungsabschnitt is insertable. So is it is possible to lay a screed of greater height with the heating pipes as close as possible to the upper surface of the screed. The intermediate piece preferably has such slots as the foot section for receiving or storing structural steels in the area of those formed by structural steels Nodes on; Thus, when using an intermediate piece, two levels of reinforcement can be provided which for static reasons with a correspondingly large

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the thickness of the screed may be required. Dor! .Stroke can be used when using mounting elements constructed in this way Lay in one piece and form advantageously a homogeneous body.

The following are preferred embodiments of the invention Devices to explain further features described. Show it:

Fig. 1 is a schematic representation of a floor construction to explain the use of the invention Contraption,

Fig. 2 is an illustration for explaining the floor construction according to Fig. 1 occurring compressive forces and Tensile stresses,

3 shows a perspective view of the device according to the invention,

4a is a perspective view of the foot section,

4b shows a side view of the pipe support section,

4c shows a bottom view of the pipe support section ,

Fig. 5 is a schematic representation of a modification of the invention, and

FIG. 6 shows a representation corresponding to FIG. 2.

Fig. 1 shows a schematic sectional view of a Floor construction using the inventive Contraption. On a sub-floor 1, e.g. a raw concrete, there is a heat-insulating layer 2, e.g. in the form of styrofoam plates, provided. On the heat insulating

Layer 2 is preferably a layer 3 of a thin-layer material, for example a plastic film, on top of layer 3 is a hardenable or hardening medium 4, for example a screed layer, in which heating pipes 5 are embedded. In the screed layer 4 devices according to the invention, hereinafter referred to as mounting elements 6, are also embedded. According to FIG. 1, each heating pipe 5 is at a predetermined distance above the heat-insulating layer 2. The distance of the heating pipes 5 from their lower edge to the surface of the heat insulating layer 2 is greater than the distance between the reinforcement grid 7 and the surface of the heat insulating layer 1.

As the schematic representation of Fig. 1 shows, this is done in the usual way, e.g. Meandering heating pipe 5 ■ arranged just below the floor surface 8 formed by the screed layer 4, i.e. the heating pipe 5 is located very close to the ground surface 8. This leads to a low thermal resistance due to the smaller distance between the bottom surface 8 and the heating pipe 5. The thickness of the screed layer 4 between the floor surface 8 and the upper edge of the heating pipe 5 is shown in FIG A denotes and, compared to known floor constructions, at least by approximately the height H of the foot section 11 of the mounting element 6 reduced.

Fig. 2 shows the loading of a floor structure accordingly Fig. 1, but without reinforcement mesh. Thus, in the arrangement of the heating pipes 5 according to the illustration According to FIG. 1, compressive forces occur in the area 13, while the tensile stresses along a line 14 are the same Would be zero. In the area 15, in particular along and over a near the layer 3 or the heat-insulating layer 2

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lying imaginary line 16, large tensile stresses occur. According to the invention, these tensile stresses are generated by the Reinforcement grid 7 added, which is provided between the heating pipes 5 and the layer 2 or layer 3 in such a way that that it is at a distance from the insulating layer 2. The distance between the reinforcement grid 7 and the insulating Layer 2 is preferably at least 2 cm. According to the invention Therefore, the reinforcement grid 7 is preferably provided at the level of the line 16.

With the floor construction shown in Fig. 3 using the mounting elements 6 according to the invention can be the position of the heating pipes 5 within the screed layer in any way in the direction of the floor surface move upwards, which reduces the thermal resistance. The use of reinforcement grids 7 increases the tensile stresses occurring in the lower area of the screed 4 in the plane of the arrangement of the reinforcement grids 7 on; the use of the reinforcement grid 7 can also be used to compare the height of the screed layer 4 to reduce to known floor constructions without reinforcement mesh.

As can be seen from the above description, the advantages mentioned in relation to the location of the heating pipes 5 and the use of the reinforcement grid 7 achieved in that the mounting elements 6 according to the invention for holding the heating pipes 5 at a distance from the subfloor, formed by the layers 1 to 3, are provided.

The mounting elements 6 are essentially constructed in such a way that that they take up the reinforcement grid 7 at nodes, i.e. at the intersection points of the reinforcing bars and support, it being provided that the holding elements 6 after their use and the still to be explained Connection with the reinforcement grid 7 are practically not displaceable. The support elements 6 also have a

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so I du ¹ ("■ <> !, Ια 1 t, el <i I ^ oin impressions in the heat insulating layer 2 as a result of walking on the reinforcement grid 7 for laying the heating pipes 5 is excluded. FIGS. 3 and 4 show a preferred Embodiment of the mounting element 6 according to the invention.

The mounting element 6 consists essentially of one Pipe support section 12 with fastening legs 12a, 12b and a foot section 11. The foot section 11 is formed by a flat foot 20, which is of any size and preferably is circular, as well as one perpendicular from the foot. 20-after above protruding part 21 is formed. The part 21 is preferably in the shape of a hollow cylinder and is in the area The free edge is provided with four slots 22. the Slots 22 - are formed in part 21 diametrically opposite one another and are located on lines, which are preferably keep right angles to each other. The size of the foot 20 is advantageously chosen so large that the Foot sections 11 can be passed through the mesh of a reinforcement grid 7. The foot section 11 assigned Pipe support section 12 consists of an approximately U-shaped profile having part 23, which is formed by the fastening legs 12a, 12b and any Can have length, while its width (corresponds approximately to the diameter of a heating pipe 5) of such a size is that an elliptical or circular heating pipe 5 is preferably clamped by the fastening legs 12a, 12b is recorded. On the underside of the part 12 are approximately radial to the axis of a slotted element 25 protruding legs 24 are provided, as can be seen from FIGS. 4b and 4c. Centered on the underside of the Part 23 is the slotted element 25, which is essentially circular in shape according to the shape of the file 21 is formed and contains diametrically opposed slots 26. The outside diameter of the circular ring-shaped element 25 corresponds approximately to the inner diameter of part 21 and the slots 26 are ortho-

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formed gonal to each other lines, like this with reference to the part 21 is described. The height of the element 25 can be smaller than that of the legs 24. Fig. 3 shows that after placing the Rohrhaiterungsabschnittes 12 on the foot section 11, the legs 24 rest on the foot 20 of the F.:ßabschnittes 11 so that a stable storage of the Rohrhaiterungsabschnittes 12 on the Foot section 11 is ensured.

The slots 22,26 in part 21 and in element 25 are used to accommodate reinforcing steel 30,31 of the reinforcement grid 7 in such a way that the junction of, for example, the two reinforcing bars 30,31 within the area defined by the part 21 or .. the element 25 is defined opening 25 ', as indicated in Fig. 4c. As Fig.1 shows, the mounting elements 6 used in such a way that they have a reinforcement grid 7 in each case in the area of a node store that the node within the opening 27 of the foot section 11 and the relevant reinforcing steel 30, 31 in the openings formed by the slots 22, 26 between the foot section 11 and the attached pipe holding section 12 come to rest.

The reinforcing bars 30,31 leading away from the node lie in the slots 22 of the part 21 after the Reinforcement grid 7 is placed on the foot sections 11 at several points and before the pipe support sections 12 be inserted into the associated foot sections 11. After the pipe support sections 12 in the relevant foot sections 11 are inserted, the heating pipes 5 can be laid in a known manner in that they are between the legs' 12a, 12b are clamped. A stable fastening of the pipe holding sections 12 can finally thereby be guaranteed that the fork-shaped slotted element 25 on its outer wall (Figure 4b) lateral and with the tubular Part 21 has cooperating projections, so that between the element 25 and the part 21 a clamping base

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consolidation is achieved.

The Rohrhaiterungsabschnitt 12 can with respect to its upper Part 23 can be designed in any way to either circular heating pipes 5 or heating pipes with an elliptical cross-section, the major axis of the ellipse being perpendicular or parallel to the layer 3 can. An unintentional movement out of the heating pipes 5 from the part 23 of the pipe support sections 12 is ensured by inwardly bent end portions 28 at the upper free edges of the part 23.

As already explained above, the essential function of the mounting elements 6 according to the invention is on the one hand to keep the heating pipes 5 at a certain distance above the insulating layer 2 and on the other hand the reinforcement grid 7 by supporting at least part of its nodes also at a distance above the to store heat insulating layer 2 *

The heating pipe 5 is stored with its lower edge above the reinforcement grid 7, while the reinforcement grid 7 itself at a sufficient distance from the heat insulating Layer 2 is supported. In this way, there is not only one lying fairly close to the surface 8 of the screed layer 4 Arrangement of the heating pipes 5 ensures, but also a complete embedding of the reinforcement grid 7 in the screed 4, so that its function of absorbing tensile stresses is ensured. Because the heating pipes 5 come to lie in the pressure area 13 of the floor construction in accordance with the illustration according to FIG. 2, is also a good contact between the screed layer 4 and the outer walls of the heating pipes 5 is guaranteed.

The retaining elements 6 can with respect to the foot section 11 also have any other shape, for example a square or rectangular foot 20. That too

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Part 21 can be formed square or polygonal in connection with the element 25, without thereby the protruding described functions of the storage of the heating pipes 5 and the support of the reinforcement grid 7 impaired will. The number of legs serving as stiffening ribs 24 can be increased or decreased if necessary. The holding elements 6 are preferably made of plastic made, but can also be made of metal and other materials.

A further embodiment of the device according to the invention is described with reference to FIGS. 5 and 6. The device or the mounting element 6 has the structure and structure already described with reference to FIG. 1 et seq additionally has at least one extension piece 40, which between the Rohrhaiterungsabschnitt 12 and the foot portion 11 is used. At the top 45, the extension piece 40 has approximately the same shape and structure as is described with respect to part 21 of foot section 11, i.e. the extension piece 40 has a roughly cylindrical shape and is provided with opposing slots 41, see above that the Rohrhaiterungsabschnitt 12 with the elements 25 from above can be inserted into the extension piece 40. The extension piece 40 has a corresponding design on its underside 46 ', like the pipe support section 12 on its underside on, i.e. an annular, slotted element 46 which is slotted in the same way as is shown with reference to the element 25 in connection with Fig. 4b and Fig. 4c is described. The extension piece 40 can thus be inserted into the foot section 11 from above.

The additional use of the extension piece 40 compared to that with reference to FIGS. 1 to 4 described embodiment enables the height of the screed to be greater by the height of the extension piece 40 can and at the same time a second level with reinforcement * .-

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Soles 43,44 can be provided. If necessary, is a thicker screed required for slaLian reasons; this can be achieved according to the invention without further ado, without the disadvantage of too deep storage of the Having to accept heating pipes. Like the one below 5 shows the embodiment described with reference to the extension piece 40 of the Rohrhaiterungsabschnitt 12 and thus the heating pipe mounted at a greater distance from the sub-floor or the layer 2 than in the embodiment according to FIGS. 1 to 4. Each mounting element 6 is used at the same time to store two on top of one another lying reinforcement grids in the area of the nodes of the reinforcing bars 30, 31 (lower level) and 43 44 (upper level in Fig. 5). Obviously can too Mohr can be provided as an extension piece 40 if the thickness of the screed is to be even greater.

Fig. 6 shows a schematic illustration to explain the position of the heating pipe 5, which compared to FIG. 2 in a Screed greater thickness' is embedded and is fairly close to the upper surface 8 of the screed, to a possible to ensure low thermal resistance. In Fig. 6 is the line along which pressure forces occur with 14 'and the line along which tensile forces occur, denoted by 16 '. The heating pipes 5 are in accordance with Fig. 2 above the line 14, i.e. in the area 13 'in which compressive forces occur. The distance between the lower edge of the heating pipes 5 and the Layer 3 is about 20 cm.

The advantage of the floor construction described with reference to FIGS. 5 and 6 is that the screed in can be poured in one piece if the mounting element according to FIG. 5 is used and the screed after hardening forms a homogeneous body. This advantage results from the variable height of the " Retaining elements as a result of the possibility of increasing the height

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Bracket elements by inserting the extension pieces to increase. In practice this has proven to be particularly advantageous: using the previous techniques in contrast, retaining elements are used that cannot be changed in terms of their height. This results in the Disadvantage that the screed cannot be poured over the entire necessary height, but only over half of it, for example Height, after which then on the hardened screed mounting elements with the heating pipes and then the screed is filled over the remaining height. Obviously, this results no homogeneous body of the two screed layers in contrast to the possibility according to the present invention.

Claims (4)

Claims 1. Device for holding heating pipes and / or Reinforcement grids, especially for underfloor heating, consisting of a foot section and a pipe support section, wherein the foot section and the pipe support section are separate and pluggable parts, characterized in that an extension piece (40) is provided between the pipe support section (12) and the foot section (11) can be used. 2. Device according to claim 1, characterized in that d.iN Ann extension piece (4C) slots (41) for receiving '' Reinforcing bars (43,44) of another reinforcement grid having. 3. Device according to one of the preceding claims, characterized in that the slots (22) of the foot section (11) are provided at a distance from the foot part (20). S / br 3111343. ": 4. Device according to at least one of the preceding claims, characterized in that the slots (41) of the extension piece (40) at one of its free ends (45) are formed. Ί. Device according to claim 4, characterized in that at the other free end (46 ') of the extension piece (40) and / or at the lower end of the pipe support section (12) a substantially circular, slotted element (25; 46) is formed, the Outside diameter approximately the inside diameter of the opening (27, 47) at the upper free end (45) of the extension piece (40) or the foot section (5) corresponds.