EA030963B1 - Tube radiator for heating and method for producing a tube radiator for heating - Google Patents

Abstract

A tube radiator (1) for heating comprises a pair of rails (2), provided with respective pluralities of holes (13) axially spaced apart from one another along the rails (2); and a plurality of tubes (3) positioned between the rails (2) and joined to the rails (2) at respective axial ends (21) of the tubes (3), inserted in respective holes (13); the ends (21) of the tubes (3) being fastened to the rails (2) via respective mechanical interference couplings (30); each coupling (30) is formed by a coupling portion (24) of a tube (3), at least partially tapered, and by a seat (14), formed in a hole (13) and in which the coupling portion (24) is inserted with radial interference; each coupling (30) is also sealed in a fluid-tight manner, for example by gluing.

Description

The present invention relates to a tubular radiator for heating and a method of manufacturing a tubular radiator for heating, in particular, a ladder type.

The level of technology

A tubular radiator, in particular, of a generally known type of ladder, in general, consists of a plurality of tubes parallel to each other and installed between two racks (as a rule, but not necessarily, when used vertically). Hot water (or, less commonly, some other hot fluid) circulates in the tubes and racks.

Tubular radiators for heating of this type can be made of various materials and using various methods.

In particular, aluminum radiators are usually made by creating tubes and racks separately and then assembling the tubes and racks.

The attachment of the tubes to the racks should be such as to ensure both effective mechanical connection and effective sealing against water.

In the document EP 1517109 a method for manufacturing a tubular radiator of water heating is disclosed, having a housing provided with assembly openings protruding into the collector pipes. The space between the surface of the assembly holes and the outer diameter of the ends of the transverse pipes that enter the collector pipes is filled with an adhesive composite, preferably based on epoxy resin. Between each transverse tube and the corresponding hole remains a large radial gap, so that the free space is filled with an adhesive composite.

It turned out that the known methods of attaching tubes to racks can be improved, especially in terms of simplicity and speed of assembly, as well as reliability and service life of the connection.

Summary of Invention

One of the objectives of the present invention is to propose a tubular radiator for heating and a method of manufacturing a tubular radiator for heating, which have advantages over known solutions, in particular, one of the objects of the invention is to propose a tubular radiator for heating and a method of manufacturing a tubular radiator for heating, which allow you to attach the tubes to the racks in a simple, fast and efficient way.

Thus, the present invention relates to a tubular radiator for heating and a method of manufacturing a tubular radiator for heating, essentially defined in claims 1 and 11 of the claims, respectively, as well as those defined in the dependent claims, which indicate preferred additional features.

The invention allows tubes to be attached to racks of tubular radiators for heating in an extremely simple, fast and efficient way compared to known solutions, providing both a mechanical connection and sealing against water in an absolutely satisfactory manner.

The invention also allows to reduce the size of the joints between the tubes and racks, in particular, to reduce the depth of the seats in which the tubes are installed;

achieve high mechanical resistance, since the tube has an increased resistance to compression and tension;

recover parts that are defective or defective.

The invention also makes it possible to significantly reduce the defectiveness in the areas of the connection of tubes and racks.

The connection of tubes and racks in accordance with the present invention also provides greater flexibility in production, allowing the manufacture of radiators that have different hydraulic circuits, without the need for additional steps in the production process.

In fact, by simply changing several design parameters and without applying additional processing steps or components, it is possible to optimize the geometry and characteristics of heat exchange of the radiator, in particular, by changing the flow sections in the areas of connection of tubes and racks, which allows us to differentiate the flow of water in different radiator zones.

Brief Description of the Drawings

Additional features and advantages of the present invention will become apparent when considering the following description of a non-limiting embodiment thereof, with reference to the accompanying drawings, in which:

in fig. 1 is a front view of a tubular radiator for heating according to the invention;

in fig. 2 shows a general view with a spatial separation and sectioning of parts for a part of the radiator of FIG. 1, for which only parts of the rack and tube are shown;

in fig. 3 and 4 shows two longitudinal cuts with a spatial separation of parts for a part of the radiator of FIG. one;

- 1 030963 in FIG. 5 is an enlarged longitudinal section of another part of the radiator of FIG. one; in fig. 6 shows a longitudinal section of a portion of the radiator of FIG. 1, where the tube and stand are assembled; in fig. 7 shows a longitudinal section of a portion of the radiator of FIG. 1 according to one of the modifications; in fig. 8 schematically shows a stage of a method for manufacturing a radiator in accordance with the present invention.

Detailed description of implementation options

FIG. 1 shows a tubular radiator 1 for heating, in particular, the type of so-called ladder.

Radiator 1 contains a pair of racks 2 (as a rule, but not necessarily, when used vertically), essentially parallel and opposed to each other, and a plurality of tubes 3 installed between the racks 2 and substantially parallel to each other and perpendicular to the racks 2

The tubes 3 are distributed in the longitudinal direction of the uprights 2, possibly with different distances between them and / or with the organization in groups.

Referring to FIG. 2-4, each leg 2 contains a body 4 of extruded aluminum profile, which is elongated along the axis A.

The body 4 has a side wall 5, which defines a longitudinal inner chamber 6 extending along the axis A, preferably (but not necessarily) the side wall 5 has a massive longitudinal region 7 of the base parallel to the axis A and facing the other leg 2, and part 8, for example , curved or polygonal, which extends from the base region 7 around the axis A.

The base region 7 in the preferred case has an outer surface 11 that is substantially flat and facing the other leg 2, and an inner surface 12 facing the chamber 6.

Each rack 2 is provided with a plurality of through holes 13, which are located at a distance from each other in the axial direction along the racks 2 and extend along the respective axes B, perpendicular to the axis A. In particular, the holes 13 are created passing through the region 7 of the base of the side wall 5 of the rack 2 from the surface 11 to the surface 12 and the thickness of the region 7 of the base of the side wall 5.

Each hole 13 defines or contains a seat 14 for installing the tube 3. Thus, each leg 2 contains a sequence of seats 14 spaced apart from each other in its longitudinal direction for receiving the corresponding tubes 3 and extending along the respective axes B.

Each hole 13 has a front entrance opening 15, made on the outer surface 11 of the rack 2 and provided with a chamfer or guide area 16, tapering towards the inside of the hole 13.

Each hole 13 contains an outer part 17, a neighboring opening 15 and defining a seat 14, and an inner part 18, an adjacent chamber 16; parts 17 and 18 are essentially cylindrical and parallel to the axis B (have constant cross section and diameter along the axis B) and differ in diameter, with the outer part 17 having a diameter larger than that of the inner part 18; between the two parts 17 and 18 there is a narrowing 19, created by a change in diameter during the transition between parts 17 and 18; parts 17 and 18 are joined by a flange 20 facing the opening 15; the flange 20 may be a continuous annular flange around the axis B or intermittent, i.e. formed by one or more sectors separated from each other; the flange 20, essentially perpendicular to the axis B and parallel to the outer surface 11 of the region 7 of the base of the side wall 5.

For simplicity, the axial ends of the uprights 2, which may be provided with appropriate caps and / or connectors, are not shown or described.

The tubes 3 are formed by corresponding tubular bodies consisting, for example, of extruded aluminum, as are the stands 2.

Each tube 3 extends along axis B (when using a seat 14 which coincides with axis B) from one to another opposite ends 21 located on one axis, which have corresponding free annular end edges 22. Each tube 3 contains a main central part 23, for example essentially cylindrical in shape (i.e. having a constant cross section and diameter along the B axis), and two connecting parts 24 located at the respective ends 21 and configured to be inserted into the corresponding holes 13 or, more precisely, the installation in the appropriate seats 14 for connecting the tube 3 with racks 2.

As shown in detail in FIG. 5, each connecting part 24 is made, at least partially, tapering towards the end 21 of the tube 3, in particular, the connecting part 24 comprises, starting from the end 22, a conical zone 25 tapering towards the end 22, and a landing zone 26 with a fit for example, essentially cylindrical in shape.

The conical zone 25 has a substantially frusto-conical shape and an outer diameter that is initially (i.e., at the free end edge 22) smaller than the diameter of the seat 14 (i.e., the outer part 17 of the hole 13) to allow installation and centering the tube 3 in the seat 14, but larger than the diameter of the inner part 18 of the hole 13, so that the end 22 rests on the drill

- 2 030963 tick 20, if necessary (in other circumstances, as will be discussed below, the end 22 does not necessarily come into contact with the flange 20).

The diameter of the landing zone 26 with tension is such that it can be mated with a seat 14 (i.e. with the outer part 17 of the hole 13) with a radial tension to connect the tube 3 with the stand 2 due to the mechanical tension. In the preferred case, the fit area 26 is essentially cylindrical, but may also have the shape of a truncated cone, like a conical zone 25.

In any case, the tight landing zone 26 is a circumferential zone extending along the axis B, and when used, touches the corresponding part of the inner circumferential surface of the seat 14, which has the same shape, which is also cylindrical in the preferred case; the connecting part 24 and the seat 14 are in contact with each other along the respective circumferential surfaces that extend along the axis B and in the preferred case both are cylinders with the axis B, in other words, the mechanical tension of the connecting part 24 and the seat 14 is not limited to the profile of the circumferential contact ( line), but occurs on surfaces that have a certain axial length along the axis B.

As an optional option, as shown in FIG. 2-5, the conical zone 25 and the landing zone 26 are tightly connected by a connecting zone 27, tapering towards zone 25, but having a lower taper than zone 25.

Each end 21 of the tube 3 is attached to the rack 2 by means of a connection 30 with mechanical tension, created by the connecting part 24, namely, the landing zone 26 with the tension, and the seat 14, i.e. the outer part 17 of the hole 13, in which the connecting part 24 is inserted with a radial tension. The mechanical tension of the connecting part 24 and the seat 14 occurs mainly in the landing zone 26 with an interference fit, but may also begin in the conical zone 25 and, in addition, may include the connecting zone 27, if necessary.

As shown in FIG. 6, each connecting part 24 is installed in the seat 14, with the corresponding end 22 located opposite the flange 20 or pressed against it; It is not necessary that all connecting parts 24 touch the flanges 20 — in reality, the tubes 3 may have slightly different lengths within the tolerances of manufacturing, longer tubes will adjoin the shoulders 20, while shorter tubes will end near the shoulders 20 , since they will be blocked by the radial tension of the respective connecting parts 24 and the seats 14, thus the invention also makes it possible to compensate for the tolerances in the manufacture of the tubes 3.

Each end 21, in addition, is inseparably secured in the seat 14 by gluing, welding, thermoelectric fusion or some other bonding technology.

For example, each end 21, in addition, is glued in the corresponding seat 14 by means of an adhesive layer 31 applied between the outer side surface 32 of the connecting part 24 and the inner side surface 33 of the seat 14 (i.e. the outer part 17 of the hole 13); the adhesive layer 31 is applied mainly to the conical zone 25 (so that it occupies the annular space between the inner side surface 33 of the seating 14) and to a lesser or residual extent to the tight fit zone 26 (and possibly the connecting zone 27); the adhesive layer 31 is applied around the connecting part 24 in such a way as to create a continuous annular sealing element 34, which provides both a sealing against water and a mechanical seal between the connecting part 24 and the seat 14.

The adhesive in the layer 31 is suitable for gluing together the materials from which the pillars 2 and the tube 3 are made, in particular, for gluing aluminum.

For example, the adhesive may be a thermally curable epoxy resin, examples of adhesives that can be used include adhesives of the Hysol® family, manufactured by Henkel, or adhesives having similar characteristics.

In addition to the strong connection of the tubes 3 with the posts 2, the adhesive layers 31 also function as sealing elements against water, forming the corresponding sealing elements 34.

As an optional option, the radiator 1 has distinct holes 13 in the longitudinal direction of the uprights 2.

At least some of the holes 13 of each rack have different constrictions 19 (with different cross sections) depending on the position of the holes in the longitudinal direction of the rack 2.

For example, in FIG. 7 shows an opening 13 having a larger restriction 19 than the openings 13 shown in FIG. 3, 4 and 6.

In the preferred case, the holes 13 have essentially the same external parts 17 (defining the seats 14), while their internal parts 18 have a different diameter depending on the position in the longitudinal direction of the rack 2.

The struts 2 preferably have corresponding groups of holes 13 with different internal parts 18 and, as a result, various constrictions 19.

Thus, it is possible to set the flow of water in the various openings 13 in accordance with the position of the openings in the longitudinal direction of the uprights 2 and, consequently, to increase the efficiency of heat exchange.

- 3 030963

As an optional variant, the tubes 3 are provided with internal ribs 35 located inside the tubes 3 and extending from the respective inner side surfaces of the tubes 3, for example, as shown by dotted lines in FIG. 5 and 6, each tube 3 is provided with a plurality of longitudinal ribs 35 parallel to each other and axis B of tube 3 and created by circumferential radial circles centered on axis B; however, it is nevertheless understood that the tubes 3 can be provided with ribs 35 of a different shape and arrangement. The ribs 35 allow you to capture heat from the hottest areas of the fluid circulating inside the tubes 3 and transfer this heat to the outer surfaces of the tubes 3.

The radiator 1 described above is preferably manufactured using a method that is described in detail below and mainly comprises the following steps:

provide rack 2 and tube 3;

collect the tube 3 and the rack 2, installing the connecting part 24 of the tube 3 in the corresponding seats 14 with the provision of mechanical tension and the creation of connections 30;

perform the sealing of the connections 30 in relation to the fluid, for example, by gluing, welding, thermoelectric fusion or some other technology, for example, the stage of sealing the connections 30 includes the step of gluing each connecting part 24 in the associated seat 14, in particular, by gluing together the outer side surface 32 of the connecting part 24 and the inner side surface 33 of the seat 14.

In more detail, the radiator 1 is manufactured by applying the method of the present invention in the manner described below.

Racks 2 and pipes 3 are made, mainly both racks 2 and pipes 3 are made of aluminum (or aluminum alloy) by extrusion, as a result of which racks 2 and pipes 3 are formed by corresponding integral extruded tubular elements.

Holes 13 or, more precisely, the outer parts 17 and the inner parts 18 of the holes 13, having different diameters, are then obtained in the racks 2 by machine drilling, thus also creating seats 14, tapers 19 and flanges 20.

By machining with the removal of material (for example, machining on a lathe), the ends 21 of the tubes 3 are provided with connecting parts 24 of suitable shape, in particular to create a conical zone 25, a fit area 26 and, optionally, a connecting zone 27.

This operation, with the exception of supplying the tubes 3 with connecting parts 24 for connecting to the uprights 2, makes it possible to ensure the required structural dimensions in an accurate and reliable manner, as well as to ensure a reduction in the range of tolerances for the part compared to the extrusion process.

An adhesive is then applied in order to obtain layers of adhesive 31, for example, adhesive is applied on the seats 14, in particular on the inner side surfaces 33 of the seats 14 (i.e., on the outer parts 17 of the holes 13).

Immediately after applying the adhesive, the tube 3 is connected to the posts at the assembly stage, which comprises the following steps:

have a rack 2 against each other, with the corresponding surface 11 facing each other and the positions of the respective sequences of seats 14 are coordinated;

have the tube 3 between the uprights 2 and the position of each tube 3 is coordinated with the position of the pair of seats 14, created in the respective uprights 2;

install the connecting parts 24 of each tube 3 in the corresponding seats 14 racks 2;

put pressure on the pillars 2 towards each other with the introduction of the connecting parts 24 into the corresponding seats 14 until each connecting part 24 is connected to the corresponding seat 14 due to mechanical tension; depending on the length of each tube 3, the end face 22 abuts against the corresponding shoulder 20, or remains at a distance from it, when viewed in the axial direction (within the tolerances during manufacture).

For example, as shown schematically in FIG. 8, the pillars 2 are mounted on the respective guides 40A and 40B, which are movable relative to each other and parallel to each other, for example, the pillars 2 are mounted on the movable guide 40A connected to the plunger 42 of the pressing device 43, and on the fixed guide 40B.

The tubes 3 are mounted on a frame 44 provided with mounting places 45 which hold the tubes 3 in the required configuration, i.e. at a distance from each other. The frame 44 is installed between the guides 40A and 40B, while the position of the tubes 3 is coordinated with the position of the respective pairs of seats 14 on the uprights 2 facing each other.

All tubes 3 are assembled on racks 2 in one stage using a pressing device 43, which pushes the guides 40A and 40B to each other (by actuating, for example, a plunger 42 connected to the movable guide 40A) and applies the pressure required for installation tubes 3 in rack 2, which leads to the creation of node 50.

- 4 030963

For the assembly 50 formed by the uprights 2 and the tubes 3, then a step of sealing the connections 30 is performed in order to connect the tubes 3 to the posts 2 in a fluid-tight manner.

For example, for node 50, a heat treatment step is performed, in particular a heat curing step, to polymerize / cure the adhesive and thus complete sealing against water and create a mechanical seal for each joint 30.

As an alternative to gluing, the sealing step may contain another process, for example welding, in particular laser welding, or thermoelectric fusion without removing material; Welding or thermoelectric alloying is performed without removing the material along the peripheral edge 36 of the opening 15, in order to obtain a roller 37 of the material of the tube 3 and / or the stand 2 along the peripheral edge 36 (Fig. 6); the roller 37 firmly connects the tube 3 with the stand 2 in a fluid-tight manner.

In any case, after the mechanical assembly has been completed, the tubes 3 are already attached to the uprights 2 due to the mechanical tightness of the connecting parts 24 and the corresponding seats 14, so it is easy to work with the node 50 without using additional means to get it and perform for him, the subsequent stage of sealing.

If, as previously described, radiator 1 has distinct openings 13 in the longitudinal direction of the uprights 2, the step of creating openings 13 in the uprights 2 by means of machine drilling comprises the step of creating different openings 13 in the longitudinal direction of the uprights 3, i.e. creating in the longitudinal direction of the uprights 2 holes 13, with different narrowing 19.

And finally, it is understood that for a tubular heating radiator and the associated manufacturing method, which are described and illustrated herein, subsequent modifications and changes can be made without departing from the scope of the claims.

Claims (26)

CLAIM 1. A tubular radiator (1) for heating, containing a pair of racks (2) equipped with a corresponding set of holes (13) located axially apart from each other along the racks (2) and having corresponding front inlets (15) on the outside surfaces (11) of the rack (2); a plurality of tubes (3) located between the uprights (2) and connected to the uprights (2) at the respective axial ends of the tubes (3) inserted into the corresponding holes (13), with the ends (21) of the tubes (3) attached to the uprights (2 ) by means of appropriate connections (30) with mechanical tension, with each hole (13) containing the outer part (17), adjacent the opening (15) and defining the seat (14), and the inner part (18) adjacent to the longitudinal inner chamber ( 6) pillars (2), with each connection (30) formed by a connecting part (24), tube (3) at one end (21) and, at least partially, tapered towards the end (21) of the tube (3), and a seat (14), characterized in that the connecting part (24) is installed in the seat (14) with a radial tension, and the connecting part (24) and the seat (14) are in contact with each other along the corresponding circumferential surfaces, passing in the direction along the axis (B) of the tube (3), and are essentially cylindrical with respect to the axis (AT); and the fact that each connection (30) is also sealed against the fluid, each end (21) is inseparably fixed in the corresponding seat (14), each connecting part (24) containing, starting from its free end edges (22), a conical zone (25), tapering in the direction of the free end edge (22) of the connecting part (24), and a substantially cylindrical landing zone (26) with an interference fit, with the holes (13) running through the massive region (7) the base of the side wall (5) of each pillar (2) between opposite surfaces (11, 12) of the base area (7) for the thickness of the base area of the side wall (5) (7), with the outer part (17) and the inner part (18) of each hole (13) being essentially cylindrical and parallel the axes (B) have different diameters and are connected by an annular collar (20) facing the aperture (15), while the connecting part (24) and the seat (14) are in contact through the landing zone (26) with the fit and the outer part (17 ), which are essentially cylindrical, and the landing zone (26) with an interference fit is made with a diameter m, providing the possibility of its location in the seat (14) with radial interference to connect the tube (3) with a rack (2) with a mechanical preload. 2. The radiator according to claim 1, wherein each compound (30) is sealed against the fluid using an adhesive layer (31) that is applied around the connecting part (24) to create a continuous annular sealing element (34), or roller (37) of tube material (3) and / or rack (2), which is located on the peripheral edge (36) of the opening (15) and which firmly connects the tube (3) with the stand (2) in a fluid-tight manner. 3. The radiator according to claim 1 or 2, in which the shoulder (20) is made essentially perpendicular to the axis (B). 4. A radiator according to one of the preceding claims, in which the free end edge (22) of the connecting part (24) adjoins the shoulder (20). 5. A radiator according to one of the preceding claims, in which the conical zone (25) and the zone (26) along - 5 030963, the tension set is connected by a connecting zone (27), tapering in the direction of the conical zone (25), but having a smaller taper than the conical zone (25). 6. A radiator according to one of the preceding claims, in which each end (21) is glued in a corresponding seat (14) with an adhesive layer (31) applied between the outer side surface (32) of the connecting part (24) and the inner side surface ( 33) a seat (14) and located around the connecting part (24) to obtain a continuous annular sealing element (34). 7. A radiator according to one of the preceding claims, in which each hole (3) has a narrowing (19) between the outer part (17) and the inner part (18) and at least some of the holes (13) of each rack (2) have different narrowing (19), i.e. have different cross-sections depending on the position of the holes (13) in the longitudinal direction of the rack (2). 8. The radiator according to claim 7, in which the outer parts (17) of the holes (13) are substantially the same, while their internal parts (18) have different diameters depending on the position in the longitudinal direction of the rack (2). 9. A method of manufacturing a tubular radiator (1) for heating according to claim 1, containing the following steps: provide a pair of racks (2) with corresponding sets of holes (13) located at a distance from each other in the axial direction along the racks (2) and containing the corresponding seats (14) for mounting the corresponding ends (21) of the tubes (3), and also having corresponding front entrance openings (15) on the outer surface (11) of the post (2), the openings (13) being made passing through the massive area (7) of the base of the side wall (5) of each rack (2) between the opposite surfaces (11, 12) the area (7) of the base for the thickness of the region (7) of the base of the side wall (5), with each hole (13) containing the outer part (17), adjacent the opening (15) and defining the seat (14), and the inner part (18) adjacent to the longitudinal inner chamber (6 a) pillars (2), the outer part (17) and the inner part (18) of each hole (13) are essentially cylindrical and parallel to the axis (B), have different diameters and are connected by an annular collar (20) facing the opening (15); provide a plurality of tubes (3) having respective connecting parts (24) located at the respective ends (21) of the tubes (3) and, at least partially, tapering in the direction of the corresponding ends (21) of the tubes (3); supply each connecting part (24) with at least one conical zone (25), tapering in the direction of the free end edge (22) of the connecting part (24), and a landing zone (26) with an interference fit that is essentially cylindrical in shape; assemble the tubes (3) on the uprights (2) to form the assembly (50) by installing the connecting parts (24) in the corresponding seats (14) through the corresponding front inlets (15) of the holes (13) and by connecting each connecting part (24 a) with a corresponding seat (14) due to mechanical tension, thereby creating a corresponding connection (30) with mechanical tension, the connecting part (24) being installed in the seat (14) with radial tension, and the connecting part (24) and place (14) contact intersect each other along corresponding circumferential surfaces that extend axially along the axis (B) of the tube (3), and are substantially cylindrical with respect to the axis (B), while at the assembly stage for connecting the tube (3) with the stand (2) due to the mechanical tension, the connecting part (24) and the seat (14) are brought into contact over the landing zone (26) with the tension and the outer part (17), which are essentially cylindrical, with the landing zone (26) with tension has a diameter that allows you to place it in the seat (14) with a radial This is due to the mechanical tension between the connecting parts (24) and the corresponding seats (14) so that it is possible to easily manipulate the node (50) without resorting to the use of additional funds; perform the sealing of the compounds (30) in relation to the fluid and permanently fix each end (21) in the corresponding seat (14). 10. The method of claim 9, wherein each compound (30) is sealed against the fluid using an adhesive layer (31) applied around the connecting part (24) to create a continuous annular sealing element (34) or roller (37 a) from the material of the tube (3) and / or the stand (2) formed along the peripheral edge (36) of the opening (15) and firmly connecting the tube (3) with the stand (2) in a fluid-tight manner. 11. The method according to claim 9 or 10, in which the step of supplying the connecting part (24) with at least one conical zone (25), tapering in the direction of the free end edge (22) of the connecting part (24), and the landing zone (26) with tension, essentially cylindrical in shape, performed by mechanical processing with the removal of material. 12. The method according to any of claims 9 to 11, in which the shoulder (20) is performed substantially perpendicular to the axis (B). 13. The method according to any one of claims 9-12, in which at the assembly stage the connecting part (24) is inserted in - 6 030963 mounting position (14) until the free end edge (22) adjoins the shoulder (20). 14. The method according to any of claims 9 to 13, comprising the step of, in particular, by machining and removing the material, the connecting part (24) is provided with a connecting zone (27) that connects the conical zone (25) and the zone (26 a) fit with tension and tapers in the direction of the conical zone (25), but has a lower taper than the conical zone (25). 15. A method according to any of claims 9-14, in which the holes (13) are provided with an outer part (17) and an inner part (18), having different diameters, by means of machine drilling. 16. A method according to any of claims 9 to 15, comprising the first step of machining the tube (3) with the removal of material, intended to produce the connecting part (24). 17. A method according to any of claims 9-16, comprising a second stage of machining the stand (2), intended to create holes (13) on the stand (2). 18. A method according to any one of claims 9-17, wherein the sealing step comprises the step of gluing each of the ends (21) of the tubes (3) in the corresponding seat (14) with an adhesive layer (31) applied between the outer side surface ( 32) the connecting part (24), the inner side surface (33) of the seat (14) and around the connecting part (24) to form a continuous annular sealing element (34). 19. The method of claim 18, wherein the sealing step comprises a heat treatment step for polymerizing / curing the adhesive and, thus, completing the sealing of each compound (30) with respect to water. 20. A method according to any of claims 9-17, wherein the sealing step comprises welding, in particular laser welding, or thermoelectric alloying without adding material, and welding or thermoelectric alloying is performed for each compound (30) without adding material from the outside along the peripheral edge (36) of the opening (15) for creating a roller (37) from the material of the tube (3) and / or the stand (2) along the peripheral edge (36), with the roller (37) firmly connecting the tube (3) with the stand (2) to an airtight in relation to the fluid way. 21. A method according to any one of claims 9 to 20, wherein the assembly step comprises the following steps: have the rack (2) against each other with the agreement of the provisions of the respective sequences of seats (14); position the tubes (3) between the uprights (2) and coordinate the position of each tube (3) with the position of the pair of seats (14) made on the respective uprights (2); install the connecting parts (24) of each tube (3) into the corresponding seats (14) of the uprights (2); put pressure on the pillars (2) towards each other and push the connecting parts (24) into the corresponding seats (14) until each connecting part (24) is connected to the corresponding mounting place (14) due to mechanical tension . 22. The method according to claim 21, wherein the assembly step comprises the following steps: install the pillars (2) on the corresponding guides (40A, 40B), made with the possibility of moving one relative to the other, and the tubes (3) - on the frame (44) equipped with mounting places (45) that hold the tubes (3) in a predetermined configurations at a distance from each other; set the frame (44) between the guides (40A, 40B) with the coordination of the position of the tubes (3) with the position of the respective pairs of seats (14) on the uprights (2) facing each other; push the guides (40A, 40B) towards each other and apply pressure to install the tubes (3) in the uprights (2). 23. A method according to any one of claims 9 to 22, in which all the tubes (3) are assembled on racks (2) in one step. 24. A method according to any of claims 9-23, in which each hole (13) has a narrowing (19) between the outer part (17) and the inner part (18) and which contains the step of creating holes (13) by means of machine drilling (2) with differing restrictions (19), i.e. having different cross-sections depending on the position of the holes (13) in the longitudinal direction of the rack (2). 25. The method according to claim 24, in which the outer parts (17) of the openings (13) are substantially the same, while their inner parts (18) have different diameters depending on the position in the longitudinal direction of the rack (2). 26. A method according to any one of claims 9 to 25, in which the pillars (2) and the tubes (3) are made of aluminum or an aluminum alloy by extrusion. - 7 030963 FIG. one - 8 030963 - 9 030963 FIG. 6 - 10 030963 FIG. eight