IT202000027879A1 - FLOOR STRUCTURE FOR A FLOOR HEAT EXCHANGE SYSTEM OF THE RADIANT TYPE - Google Patents

Description

FLOOR STRUCTURE FOR A FLOOR HEAT EXCHANGE SYSTEM OF THE RADIANT TYPE.

DESCRIPTION

The present invention relates to a floor structure suitable for being used for the installation of a floor heat exchange system of the radiant type, particularly a liquid or electric floor heating or cooling system. Floor or wall heating systems for buildings are well known in the art which use pipes or electric cables arranged under the floor of the building or in the cavities of the walls to radiate heat into the rooms.

In particular, liquid underfloor heating systems exploit the circulation of hot water at low temperatures, usually between 30?C and 35?C, in a closed circuit of pipes arranged in the underfloor, which develop covering a high radiating surface . The heat of the water flowing in the coil under the floor is gradually transmitted upwards, heating the room in a constant and uniform way.

As far as electric underfloor heating systems are concerned, they generally include electric cables operating from electric resistance or electric heating wires which, when crossed by an electric current, heat up due to the Joule effect, dissipating energy in the form of heat which is transferred to the surrounding environment.

Generally, the installation of these underfloor heating systems requires that the coils of the pipes in which the heated liquid flows or the heating wires are laid under the floor on panels made of thermally insulating material.

For liquid heating systems, the pipes can be embedded in the support layer of the floor, be routed under the support layer or embedded in a layer of leveling material.

In the first case, an insulating layer is inserted above the bearing slab of the floor, above which the fluid pipes are laid, which are then completely drowned in the support layer, the so-called concrete screed. Finally, this screed is covered with the exposed floor covering which can include tiles, parquet, carpet, etc.

The screed layer? essential for creating a flat and regular surface on which to lay the floor.

However, the realization of the screed ? an operation that requires long exposure times why? ? it is very important that the cementitious material dries completely before proceeding with the laying of the covering.

Furthermore, the screed increases the thermal inertia of the heating system, absorbing the heat and slowly releasing it into the environment.

This thermal inertia represents a disadvantageous drawback when it is necessary to heat an environment immediately and/or for a few hours a day.

Another inconvenience of laying a screed? the increase in the final thickness of the floor which, especially in older buildings, represents an aspect that should not be underestimated.

Another drawback of this type of heating? represented by the fact of not being able to modify the route or length of the pipes once they have been installed and drowned in the screed.

In electric underfloor heating systems, without screed, the coil of pipes and conductor wires ? arranged in the sub-floor, connected to each module of the final covering. The absence of the screed reduces the time necessary to reach the desired temperature in the room.

However, disadvantageously, the installation of such an electric heating system ? much more expensive than a liquid heating system, due to the materials used.

Furthermore, if this type of heating is not installed in a workmanlike manner, or if a wooden/parquet floor is laid on top of it in a non-optimal way, the high temperatures reached by the conductors can cause the wooden planks to lift, even up to a few centimetres.

A disadvantageous inconvenience, which ? common to both types of underfloor heating, ? represented by the need having to remove at least part of the floor covering and destroy the underlying screed, if present, if there is damage to the pipes or conductor wires, to allow the operator to identify the damage and proceed with the repairs. The present invention intends to overcome the indicated limitations and drawbacks.

Particularly, ? an object of the present invention is to create an alternative floor structure to the structures per se? notes, which allows the installation of a liquid or electric underfloor heating or cooling system.

Another object of the present invention ? that this floor structure is suitable for use with any type of covering, such as wood, stoneware, etc.

? another object of the present invention is that this structure can be easily inspected by an operator, without having to demolish the building components present.

? moreover, an object of the present invention is that this structure can be modulated, ie that its development in the environment can be modified according to requirements.

Not last, ? object of the present invention that this structure has a lower thermal inertia than the known floor structures for liquid floor heating systems.

The said objects are achieved with the production of a floor structure, in accordance with the main claim.

Further characteristics of the floor structure are disclosed in the dependent claims.

The aforementioned aims, together with the advantages which will be mentioned below, will be better highlighted during the description of a preferred embodiment of the invention which is given, by way of example but not in limitation, with reference to the attached drawings, where:

- in figure 1 ? shown is an axonometric view of the floor structure according to a preferred embodiment of the invention; - in figure 2 ? an isometric view of the support frame with the support panels of the floor structure of figure 1 is shown;

- in figure 2a ? shown a detail of a fitting body of figure 2;

- in figure 3 ? an isometric view of the support frame of figure 1 is shown;

- in figure 3a ? a housing seat of the support frame of figure 3 is shown;

- in figure 4 ? shown is a top view of the floor structure of figure 1;

- in figure 5 ? shown is the sectional view of the floor structure of figure 4 along the section line AA;

- in figure 5a ? shown a detail of the section of figure 5;

- in figure 6 ? shown is the sectional view of the floor structure of figure 4 along the section line BB;

- in figure 6a ? shown a detail of the section of figure 6;

- in figure 7 ? shown the sectional view of the floor structure of figure 4 along the section line CC;

- in figure 7a ? shown a detail of the section of figure 7;

- in figure 8 ? shown the sectional view of the floor structure of figure 4 along the section line DD;

- in figure 8a ? shown a detail of the section of figure 8;

- in figure 9a ? shown is an axonometric view of an embodiment of a connecting body of the floor structure according to a preferred embodiment of the invention;

- in figure 9b ? shown is an axonometric view of the upper half-shell of the fitting body of figure 9a;

- in figure 9c ? shown is an axonometric view of the lower half-shell of the fitting body of figure 9a;

- figures 10a and 10b show two top views of two lower half-shells corresponding to two embodiments of connection bodies of the floor structure according to a preferred embodiment of the invention;

- in figure 11 ? shown is an axonometric view of two pipes with a connecting body of the floor structure according to a preferred embodiment of the invention.

The floor structure according to the preferred embodiment of the invention is shown in the figures and is indicated as a whole with the number 1.

The floor structure 1 of the present invention ? preferably configured to allow the installation of a floor heating system of the radiant type, preferably a floor heating system of the radiant type, such as for example a liquid heating system or of the electric type, according to what will be? described more forward.

In the text of this description you will? reference to a floor structure 1 comprising heat exchange means configured in particular for heating the rooms where this structure 1? installed.

However, it should be noted that these heat exchange means could be configured to instead provide cooling of the environment where the floor structure 1 is arranged.

It is therefore understood that the floor structure 1 of the present invention ? to be considered suitable for allowing both the installation of a heating system and the installation of a cooling system.

According to the preferred embodiment of the invention, the floor structure 1 comprises:

- a support frame 2;

- a walking surface 3 supported by the support frame 2;

- heat exchange means 4.

The term walking surface 3 means a covering which is arranged above the support frame 2 according to the vertical axis Y, and which represents the surface with which the end user usually comes into contact.

It preferably includes one or more? modular elements of any size, shape and material, which are arranged adjacent to each other to form the aforementioned walking surface 3, as shown in figure 1.

Said modular elements can include, by way of non-limiting example, tiles in ceramic, stoneware, porcelain stoneware, resin, or even planks of wood, such as for example planks of parquet.

As regards the heat exchange means 4, they are preferably heating means and comprise at least one pipe 41 configured to allow the flow of a heating fluid, for example water, or a mixture of water and glycol or the like.

Pipe 41, shown in FIG. 11, is preferably made of metallic material, particularly aluminium, so as to increase the exchange area between the heating flow which flows inside it and the surrounding environment.

It cannot be excluded that, according to alternative forms of the invention, this pipe 41 is a pipe of the known type for use in underfloor heating systems of the radiant type.

Alternatively, the heat exchange means 4 comprise at least one pipe 41 configured to contain a plurality of of electric resistances, so as to create an electric heating system.

Furthermore, as previously indicated, it is not excluded that the pipe 41 is configured to allow the flow of a cooling fluid, such as for example chilled water.

As far as the support framework 2 is concerned, it comprises a reticular structure 20 of tubular bars 21 which defines a plurality of of meshes in which the perimeter of each of these meshes? defined by a discrete number of the aforementioned tubular bars 21.

Preferably but not necessarily, the perimeter of each of these meshes defined by four of the aforementioned tubular bars 21, so that the meshes of the lattice are in the shape of a quadrilateral, as shown in figures 2 and 3.

It is not excluded that, according to alternative forms of the invention, the links of the reticular structure 20 have a shape other than that indicated.

According to the preferred embodiment of the invention, the tubular bars 21 are provided with projecting elements 211 able to define a housing seat 22, shown in detail in figure 3a.

This housing site 22 ? preferably configured to accommodate a support panel 5.

Pi? precisely, each of the aforementioned projecting elements 211 protrudes from a respective side wall 21a which delimits the tubular bar 21 and extends for at least a portion of the length of the tubular bar 21 itself.

In this way each projecting element 211 and the respective side wall 21a define between them the aforementioned housing seat 22 whose cross section has a profile which substantially recalls the shape of the letter L.

The support panel 5 ? preferably made of cementitious material, optionally provided with portions of metallic material, for example steel, so as to create a support surface for the walking surface 3 arranged above it according to the vertical axis Y.

As shown in figure 2, according to the preferred embodiment of the invention, at least a part of the perimetric edge of the support panel 5? housed in the aforementioned housing seat 22. Preferably, the entire edge of the support panel 5 is? housed in housing seat 22.

Furthermore, the thickness of the support panel 5 ? substantially corresponding to the height of the housing seat 22, with reference to the plane defined by the upper surface of the tubular bar 21, according to the vertical axis Y.

Also, the thickness of the backing board 5 ? substantially corresponding to the height of the housing seat 22 with reference to the upper part of a connecting body 23 which will be? described in more detail forward.

Advantageously, the floor structure 1 of the present invention comprises a plurality of of support panels 5 each arranged in correspondence with a housing seat 22 of the reticular structure 20.

Thanks to the thickness of the support panel 5 indicated above, when these support panels 5 are housed in the respective housing seats 22, their upper surfaces form a single support plane with the upper surfaces of the tubular bars 21 of the reticular structure 20 substantially horizontal configured to support the aforementioned walking surface 3.

It cannot be excluded that, according to alternative embodiments of the invention, the thickness of the support panel 5 is greater than the height of the housing seat 22. This characteristic is particularly advantageous when the floor structure 1 with the corresponding support panel 5 are arranged in environments that must support heavy loads, such as garages or warehouses for example.

Going back to the preferred embodiment of the invention, inside these tubular bars 21? defined at least one duct 212 configured to house the aforementioned heat exchange means 4.

In particular, this duct 212 houses one or more? of the pipes 41. Preferably but not necessarily, inside the aforesaid duct 212? Is there some insulating material, such as for example expanded polystyrene and rock wool, not shown in the figures, which is? preferably distributed externally to the aforementioned pipe 41, advantageously limiting heat loss.

According to the preferred embodiment of the invention, the support frame 2 further comprises a plurality of of connecting bodies 23 configured to connect at least two tubular bars 21 and place at least two of these ducts 212 defined in the tubular bars 21 in communication.

Advantageously, these ducts 212 together with the connecting bodies 23 allow the heat exchange means to be arranged inside the support frame 2 of the walking surface 3.

In this way, the pipes 41 of the heat exchange means 4 do not need to be embedded in cement masses, such as for example a screed, in order to perform their heating function and at the same time not be crushed by the weight of the overlying pavement.

Still advantageously, the presence of the connecting bodies 23 allows the operator to arrange the aforementioned pipes 41 according to the most common routes. suitable, based on the needs of the room to be heated. By way of example, in fact, sar? It is possible to limit the distribution of the pipes 41 in those areas which are located below furniture objects and which therefore do not need to be heated.

Further advantageously, if one or more? of the aforementioned pipes 41 is damaged, sar? Is it possible for the operator to directly access the damaged pipe without the need? to destroy the modular cladding elements forming the walking surface and any cement mass in which the pipe 41? drowned, with a considerable saving of time and difficulty? operational. Baster? in fact, lift the modular elements of the walking surface 3 arranged in correspondence with the damage to the pipe to access the underlying support frame 2 and therefore the tubular bars 21 containing the damaged pipe 41.

Still advantageously, sar? it is also possible to modify the path of the heating means 4 or to add these heating means 4 at a later time after the assembly of the floor structure 1.

According to the preferred embodiment of the invention, the support frame 2 further comprises a plurality of of load-bearing elements 24 shown in the figures, configured in such a way as to support the reticular structure 20.

Preferably, these load-bearing elements 24 develop along the vertical axis Y in such a way that a gap is defined between the horizontal support plane on which they rest and the reticular structure 20.

Pi? preferably, these supporting elements 24 have a prismoidal shape.

Advantageously, the presence of said interspace allows any connections for electrical or hydraulic systems present in the environment to be housed inside it.

Furthermore, the presence of this interspace creates a greater space for the arrangement of such systems with respect to the prior art in which the various pipes are located adjacent, embedded in the same screed.

Preferably also, within this interspace? There is insulating material, such as expanded polystyrene for example, which limits heat loss and rising damp.

Returning to the preferred embodiment of the present invention, the connecting bodies 23 are at least two-way bodies for placing at least two ducts 212 in communication belonging to one or more? tubular bars 21.

It should be noted that these connecting bodies 23 can comprise two-way bodies which connect, through the aforementioned connecting body 23, the duct 212 itself, as shown in figure 10b. These connecting bodies 23 are configured in such a way as to be able to house one or more? pipes 41 of the heat exchange means 4 and allow its development along more? tubular bars 21 of the reticular structure 20 of the support frame 2.

Preferably, these connecting bodies 23 are arranged adjacent to at least two of these tubular bars 21.

Furthermore, these connecting bodies 23 are preferably arranged in correspondence with the supporting elements 24 of the reticular structure 20, as shown in figures 1 to 3.

even more preferably, these connecting bodies 23 are arranged at the vertices of the meshes defined by the reticular structure 20, so as to allow the pipes 41 of the heat exchange means 4 to develop along the tubular bars 21 according to development directions that coincide or are parallel to each other .

Preferably, these connecting bodies 23 are provided with at least two ways to connect one or more? ducts 212, as shown in the examples of figures 10a and 10b.

Pi? preferably, these ways are defined internally to the connecting body 23 itself.

In particular, each via of the connecting body 23 is connected to at least one end? of a pipe 41 in such a way that a plurality? of the aforementioned connecting bodies 23, preferably arranged at the intersections of multiple? tubular bars 21, give the duct 212 a mesh configuration.

By way of non-limiting example, these ways can be defined in the aforesaid connection bodies 23 according to a path in the shape of a T, L, C, I, etc. according to the requirements.

As shown in figures 9a to 9c, according to the preferred embodiment of the invention, the connecting bodies 23 are formed by two half-shells, in each of which ? defined a halfway for housing the pipes 41.

Operationally, the presence of two half-shells facilitates the installation operations of the pipes 41 along the reticular structure 20.

In fact, thanks to these half-shells, the operator can? arrange a first half-shell of the connecting body 23 at the site of the support frame 2 where this will go? positioned, then arrange the pipe 41 inside the half-way defined in this half-shell and, subsequently, arrange the second half-shell to close the fitting body 23.

Furthermore, should it be necessary to modify or replace the pipe 41, will it suffice? move the second half-shell away from the first half-shell of the fitting body 23 so? to be able to access the pipe 41 contained therein and remove it without obstacles.

It is not excluded that, according to alternative forms of the invention, this connecting body 23 is made up of a single body or is made up of several? of two half shells.

According to the preferred embodiment of the invention, at least one of these connecting bodies 23 comprises connection means, not shown in the figures, configured to put the heat exchange means 4 in communication with a general heating or cooling line external to the floor 1.

Preferably but not necessarily, these connection means are arranged on the opposite side of the walking surface 3 with respect to the support panel 5.

Pi? preferably, these connecting means are arranged in correspondence with the gap defined by the bearing elements 24 between the horizontal plane and the support panels 5.

Returning to the preferred embodiment of the invention, the floor structure 1 comprises a panel 6 of conductive material placed between the support framework 2 and the walking surface 3, as shown in figures 5a, 6a, 7a and 8a.

Heat conductive materials suitable for use include aluminium, copper, zinc and, in general, all metallic materials and their alloys.

Preferably, this conductive panel 6 is placed in contact with at least one connecting body 230 of the plurality of fitting bodies 23 to realize the thermal connection between the heat exchange means 4 contained in the fitting body 230 and the conductive panel 6.

Does this at least one connecting body 230 belong to the connecting bodies 23 and ? made of conductive material.

Advantageously, the presence of this conductive panel 6 allows for a greater transfer of heat from the heat exchange means 4 to the walking surface 3 and, consequently, to the room above.

According to the preferred embodiment of the invention, the floor structure 1 comprises first fastening means 231 made of conductive material for fastening the conductive panel 6 to the conductive connection body 230, shown in figure 6a.

Preferably, these first fastening means 231 are made of metallic material.

The aforementioned first fastening means 231 preferably comprise screw means having at least one portion of the body coupled to the conductive fitting body 230 and at least the head of the screw inserted into a hole 61 made in the conductive panel 6.

Advantageously, these first fixing means 231, in addition to allowing the conductive panel 6 to be fixed to the conductive connection body 230, also act as a thermal bridge between the heat exchange means 4 and the conductive panel 6, improving the transfer of heat towards the walking surface 3.

It cannot be excluded that, according to alternative embodiments of the invention, said first fastening means 231 are not made of conductive material and only perform the fastening of the conductive panel 6 to the connecting body 230, or that said first fastening means 231 are not present.

According to the preferred embodiment of the invention, the floor structure 1 further comprises a substantially planar leveling plate 7 interposed between the walking surface 3 and the conductive panel 6, as shown in figures 5a, 6a, 7a and 8a.

This leveling plate 7 allows to level the surface on which the walking surface 3 is positioned in order to be used, so as to obtain a final flooring as much as possible. horizontal.

Preferably, with the embodiment of the invention comprising the first fastening means 231 described above, the head of the screw of these first fastening means 231 is in contact with the leveling plate 7.

It cannot be excluded that, according to alternative embodiments of the invention, the leveling plate 7 is not present.

Returning to the preferred embodiment of the invention, the floor structure 1 comprises a slab of insulating material 8 interposed between the conductive panel 6 and the support panel 5, as shown in figures 5a, 6a, 7a and 8a.

The insulating slab 8 allows to obtain a lower thermal dispersion than the floor structure 1.

In particular, the conductive fitting body 230 ? arranged passing through the insulating plate 8 through a through hole 81 made in the aforementioned insulating plate 8.

It is not excluded that, according to alternative forms of the invention, this insulating plate 8 is not present.

According to the preferred embodiment of the invention, the floor structure 1 comprises the following components arranged from top to bottom according to the vertical axis Y: walking surface 3, leveling plate 7, conductive panel 6, insulating plate 8 support frame 2 with support panels 5.

It is not excluded that, according to alternative forms of the invention, the order of the components is different from what is indicated and/or that one or more of these components is not present.

According to the preferred embodiment of the invention, the floor structure 1 comprises second fastening means 31, shown in figure 8a, configured to connect the walking surface 3 to the support surface 5, so as to fix the walking surface 3 to the underlying structure and prevent it from moving accidentally.

Advantageously, these second fastening means 31 allow to obtain a fastening of the removable type which allows the walking surface 3 to be removed, according to requirements, to access the components arranged underneath.

Preferably in fact, these second fastening means 31 comprise at least one pin 311 having the first end? 311a bound to the walking surface 3, the second extremity? 311b, opposite the first end? 311a, inserted in a blind hole 51 made in the support panel 5 and the body inserted in a plurality? of through holes, defined in the components of the floor structure 1, which are interposed between the walking surface 3 and the support panel 5, particularly the leveling plate 7, the conductive panel 6 and the insulating plate 8, overlapping each other according to the vertical axis Y.

Preferably but not necessarily, the first extremity? 311a of pin 311 ? bound to the lower surface of the walking surface 3, with reference to the vertical axis Y.

Pi? preferably, this first end? 311a ? constrained to the walking surface 3 by means of gluing means.

Advantageously, these second fixing means 31 allow both to fix the walking surface 3 to the support surface 5, and to fix the components interposed between them, for example the fixing of the leveling plate 7, the conductive panel 6 and the insulating plate 8 to each other and to the support panel 5 and to the walking surface 3.

Still advantageously, these second fastening means 31 allow an operator to easily move away the modular elements that make up the walking surface 3 by extracting the pin 311 from the blind hole 51 and from the through holes present in the other layers of the floor structure 1, in so that you can replace one or more? any modular elements, for example why? damaged, or be able to access the heat exchange means 4, the systems or any equipment located in the subfloor.

Further, ? it is advantageously possible to replace the walking surface 3 with one having a different finish, without damaging the modular elements present.

It is not excluded that, according to alternative forms of the invention, these second fastening means 31 have a different shape with respect to what is indicated, provided that allow the walking surface 3 to be fixed in a removable way to the support panel 5.

By way of example not to be considered limiting, according to a variant embodiment, these fastening means 31 can form a single body with the modular element of the walking surface 3.

It should be noted that, according to a variant of the invention, the floor structure 1 is suitable for being placed at the ceiling of a room to be heated.

With this variant, the floor structure 1 comprises the following components arranged from the bottom upwards according to the vertical axis Y: walking surface 3, leveling plate 7, the conductive panel 6, the insulating plate 8, the support 2 with, optionally, support panels 5.

Furthermore, with this variant, the floor structure 1 comprises means for coupling to the ceiling which allow the aforementioned components to be fixedly hung in a removable manner from the ceiling of the room to be heated.

Finally, it cannot be excluded that, according to another variant of the present invention, the aforementioned floor structure 1 is arranged in correspondence with a wall, and the walking surface 3 is therefore arranged parallel to a vertical plane.

With this variant, the floor structure 1 will comprise the following components arranged from the room to be heated towards the wall, according to the horizontal axis: walking surface 3, leveling plate 7, conductive panel 6, insulating plate 8 and the support frame 2 with, optionally, the support panels 5 .

With this other variant, the floor structure 1 comprises means for hooking to the wall which allow the aforementioned components to be fixed in a removable manner to the aforementioned vertical wall of the room to be heated.

Therefore, on the basis of what has been said, the floor structure of the invention achieves all the intended purposes.

In particular, the floor structure of the invention makes it possible to install a liquid or electric floor heating or cooling system and is moreover an alternative structure to the known structures.

Furthermore, the floor structure of the invention is usable with any type of coating, such as wood, stoneware, etc. Again, this structure? easily inspected by an operator without the need? to demolish existing building components. Furthermore, this structure modular in shapes and sizes, its development in the environment can? then be modified as needed.

Last but not least, the floor structure of the invention has a lower thermal inertia than known floor structures for liquid floor heating systems.

Claims (10)

1) Floor structure (1) for a radiant type floor heat exchange system, particularly for a radiant type floor heating or cooling system, said floor structure (1) comprising: - a support frame (2); - a walking surface (3) supported by said support framework (2); - heat exchange means (4); characterized in that said support frame (2) comprises: - a reticular structure (20) of tubular bars (21) which defines a plurality of meshes in which the perimeter of each of these meshes? defined by a discrete number of said tubular bars (21), a duct (212) configured to house said heat exchange means (4) being defined inside said tubular bars (21); - a plurality? of connecting bodies (23) configured to connect at least two of said tubular bars (21) and place at least two of said ducts (212) of said tubular bars (21) in communication. 2) Floor structure (1) according to the preceding claim, characterized in that said tubular bars (21) are provided with projecting elements (211) able to define a housing seat (22) configured to house a support panel (5 ). 3) Floor structure (1) according to any one of the preceding claims, characterized in that it comprises a panel (6) of conductive material placed between said support framework (2) and said walking surface (3). 4) Floor structure (1) according to any one of the preceding claims, characterized in that at least one connecting body (230) of said connecting bodies (23) ? made of conductive material, said conductive connection body (230) being placed in contact with said conductive panel (6) to realize the thermal connection between said heat exchange means (4) and said conductive panel (6). 5) Floor structure (1) according to any one of the preceding claims, characterized in that it comprises a substantially planar leveling plate (7) interposed between said walking surface (3) and said conductive panel (6). 6) Floor structure (1) according to any one of the preceding claims, characterized in that it comprises first fastening means (231) made of conductive material for fastening said conductive panel (6) to said conductive connection body (230), said first fastening means (231) comprising screw fastening means having at least one portion of the body of said screw coupled to said conductive connection body (230) and at least the head of said screw inserted into a hole (61) made in said conductive panel (6). 7) Floor structure (1) according to any of claims from 3 to 6 combined with claim 2, characterized in that it comprises a slab (8) of insulating material placed between said conductive panel (6) and said support panel ( 5), said conductive connection body (230) being arranged passing through said insulating plate (8) by means of a through hole (81) made in said insulating plate (8). 8) Floor structure (1) according to any of claims from 2 to 7, characterized in that it comprises second fastening means (31) configured to connect said walking surface (3) with said support surface (5), said second fastening means (31) comprising at least one pin (311) having a first end? (311a) bound to said walking surface (3) and a second end? (311b), opposed to the said first extremity? (311a), inserted in a blind hole (51) made in said support surface (5). 9) Floor structure (1) according to any one of claims from 2 to 8, characterized in that at least a part of the perimetric edge of said support panel (5) ? housed in said housing seat (22), the thickness of said support panel (5) substantially corresponding to the height of said housing seat (22) with reference to the upper plane defined by said tubular bar (21). 10) Floor structure (1) according to any one of the preceding claims, characterized in that said heat exchange means (4) comprise a pipe (41) configured to allow the flow of a heating fluid or to contain a plurality of of electrical resistances.