EP2024579A2

EP2024579A2 - Fire barrier door with a vertical and/or horizontal opening

Info

Publication number: EP2024579A2
Application number: EP07734834A
Authority: EP
Inventors: Giampaolo Nelzi
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-25
Filing date: 2007-05-23
Publication date: 2009-02-18
Also published as: WO2008047185A3; WO2008047185A2; ITVI20060160A1

Abstract

A fire barrier door (PO), with a vertical or horizontal opening, characterized in that it is constructed with fireproof materials joined by components which progressively dissolve in the case of fire, leaving the fireproof materials in position and with fireproof capacities suitable for maintaining the fire diffusion barrier for certain periods of time.

Description

FIRE BARRIER DOOR WITH A VERTICAL AND/OR HORIZONTAL OPENING

The present invention relates to a fire barrier door. In particular, the invention relates to a fire barrier door with a vertical or horizontal opening, consisting of fireproof materials joined to each other by components (such as synthetic glues, for example), which provide such mechanical characteristics as to allow the door to also be used intensively, said components, in the case of fire, progressively dissolving, for example by sublimation, evaporation, melting, ' carbonization, leaving the fireproof materials in position and suitable for guaranteeing the fire barrier effect for a certain period of time.

The fire barrier doors generally consist of single panels or various panels flanked and/or joined to each other.

Furthermore, materials are normally used which, together, form a barrier which resists fire for a certain period of time before melting or collapsing.

They generally consist of light plates on the two outer sides, with fireproof material in the interior, such as for example rock wool, and they are normally contained in a perimetric framework which also holds suitable sliding wheels on lower or upper rails.

The flame resistance is provided by the resistance of the plate exposed to fire and intermediate fireproof and insulating material, which only transmits a minimum part of the heat to the other side.

One of the most serious drawbacks of this structure, however, is due to the fact that the plate exposed to fire dilates enormously with respect to the plate on the other side, bending the whole panel and thus reducing the fire-resistance capacity over a period of time.

To prevent the heat from being transmitted to the side not exposed to fire, it is also necessary for there not to be heat bridges between the two sides, this reduces the solidity of the construction in the case of continual opening and closing, also already limited by the weight of the door itself, which is considerable.

The entire structure of fire barrier doors is in fact only used as a fire barrier and in the case of the contemporaneous necessity of continually opening and closing the opening protected by the fire barrier door, a second door or rapid door for intensive use is contemporaneously applied to said opening, whereas the fire barrier door remains static, open, and is only closed in the case of fire alarm or another alarm or specific command. As a result of their characteristics and the necessity of reclosing them very slowly and also without electric power supply, following an alarm or black-out, in view of the great difficulties in respecting these obligations, said fire barrier doors are produced with lateral sliding, in order to sustain their considerable weight on an upper rail and to allow the door to be closed in the case of alarm by pulling a simple counterweight, which is unhooked by the alarm. Also in this case, however, there is a side encumbrance of the door of more than double the opening, with serious problems of design, a significant expense for the protection of the door panel, considerable occupation and consequently waste of ground space . An objective of the present invention is therefore to overcome the drawbacks specified above and, in particular, to provide a fire barrier door with a vertical or horizontal opening which is substantially light and which does not undergo significant dilations if subjected to fire.

A further objective of the present invention is to provide a fire barrier door with a vertical or horizontal opening, which is suitable for being constructed in a single piece or in sections, with an horizontal or vertical opening, also in areas with a reduced side or upper space .

These and other objectives are achieved by a fire barrier door with a vertical or horizontal opening according to claim 1 enclosed; other detailed technical characteristics are indicated in the subsequent claims .

Further characteristics and advantages of a fire barrier door with a vertical or horizontal opening, according to the present invention will appear more evident from the following description, relating to a preferred but non-limiting embodiment of a fire barrier door with a vertical or horizontal opening, according to the invention, and from the enclosed figures, in which:

- figure 1 is a vertically sectional perspective view, illustrating only the part corresponding to the opening, of a first embodiment of a fire barrier door with a vertical or horizontal opening, according to the present invention; figure 2 is a partial cross-section, exploded and perspective view of a fire barrier door with a horizontal opening, according to the present invention;

- figure 3 shows a partial perspective view of a first preferred but non-limiting embodiment of one of the panels of which the fire barrier door object of the present invention consists; - figure 4 shows an intermediate vertical section of the panel according to figure 3, in accordance with the present invention;

- figure 5 shows a vertical section of a second embodiment of one of the panels of which the fire barrier door, object of the present invention, consists;

- figure 6 shows a horizontal sectional view of a fire barrier door with a vertical opening, according to the invention;

- figure 7 is a vertical section of a second embodiment of a fire barrier door with a vertical opening, according to the present invention;

- figure 8 is an enlarged view of a technical- constructive detail of the door of figure 7, according to the present invention.

With reference to the above figures, the fire barrier door PO, object of the invention, consists, as shown in detail in figure 1, of one or more panels PAl, PA2, PA3, each consisting of at least two sides FACl, FAC2, joined to each other by at least two joining sectors SEl, SE2, SE3 , SE4 , with at least one chamber CAl, CA2 , CA3 between the sides FACl, FAC2.

In a preferred but non-limiting embodiment, the terminal sectors SEl, SE2 are formed so as to allow each panel, for example PA2, to be coupled by insertion with possible adjacent panels, for example PAl, PA3 , with a sector (for example the sector SE5 of the panel PA2) which is penetrated by the sector SEl of the adjacent panel PAl (in this way, the sector SE6 of the panel PA2 is also constructed so as to penetrate the sector SE7 of the panel PA3) , thus forming as a whole a labyrinth and/or a nest connection, and/or a connection which does not allow the penetration of liquids towards the other side, if one of the two sides is exposed, for example, to water.

The material forming each panel PAl, PA2, PA3 , is fireproof, for example glass fibre and/or rock wool, with the fibres preferably positioned so as to form a protection, i.e. in a crossed arrangement.

These fireproof materials can be held together and reinforced by natural or chemical components, such as for example animal or vegetable or chemical glues, or by plastic products, in order to make the panels PAl, PA2, PA3 strong and stable in their dimensions, at temperatures considered normal (from -30⁰C to +7O⁰C) , allowing also an intensive use of the door PO, but at the same time maintaining its lightness.

Each of the panels PAl, PA2 , PA3 , thus formed, in the case of exposure to fire on one side and/or on the other, progressively loses, by sublimation or melting or evaporation, for example, starting from the side exposed to the flames, part or all of the above components which give it mechanical solidity, but it keeps in position the fireproof fibres, which constitute the fire barrier, whereas the side not exposed to the flames reaches melting and/or sublimation or evaporation temperatures only after a certain period of time, which increases in relation to the formation of the panels, as follows, thus keeping the structure of the side exposed to the flames stable for the established time, even without the binder of the fireproof fibres.

In a minimum preferred embodiment, each of the panels PAl, PA2 , PA3 can be used as such, in a single piece or in various flanked panels, inserted or not inserted in a framework TE, as shown in detail in figure 2.

In more complex embodiments, in order to give greater fire-resistance, each of the panels PAl, PA2, PA3 can be further reinforced in its fireproofing using one or more of the following technical solutions, indicated in detail, for illustrative and non-limiting purposes, in figures 3, 4 and 5 respectively, in which a preferred embodiment of a panel PA is shown. In particular, according to a first embodiment, a filling is envisaged of the chambers CAl, CA2, CA3 with an expanding fireproof material of the known type, which allows the maximum lightness to be maintained and filling the chambers with fireproof foam which blocks the air and heat circulation, if a certain temperature is reached.

Alternatively, it is possible to fill the chambers CAl, CA2 CA3 with a more consistent but heavier fireproof material, such as for example, rock wool, which blocks the air circulation and limits (more or less depending on the consistency) the heat diffusion; in this case, as the material is heavier, it is necessary to add a perimetric and/or infra-perimetric frame COR, CORl, COR2 , made of a fireproof material, preferably of the type already described for the formation of the panels PA, outside the side FACl, maintaining the formation of the chamber CA4 with the outer superimposition of the frame COR of a further fireproof sheet Fl.

Alternatively, the chamber CA4 is filled with another fireproof material LR, for example rock wool or known thermo-expanding fireproof materials.

Again, in alternative but non-limiting embodiments, the fire-seal can be further reinforced with the application of a fireproof sheet F2 directly on the side, for example FAC2 , of the panel PA. In this way a modular system is produced (see figures 3, 4 and 5) which allows exposure to fire of the panel PA with the simple sides FACl, FAC2 alone, or with the sides FACl, FAC2 protected by one or more of the devices indicated above, such as the use of the empty frame COR, positioned in the space which is created between the side FACl and the sheet Fl, added to the outside of the frame COR, the use of the frame COR with the fireproof material LR in the above-mentioned space, or the use of the simple fireproof sheet F2, positioned directly against the side FAC2 of the panel PA.

All of this is reflected or not reflected by the two sides of the panel PA, and in the preferred order, and with a desired quantity of panels and frames.

The aim of adding further fireproof materials as described is to offer the fire, by possible disintegration with time under the action of the flames, an outer panel (for example the sheets Fl, F2 and optionally further sheets F3 , F4, visible in the embodiment of figure 5) , which isolates and protects until its possible disintegration and fracturing, the underlying part which is thus exposed integral to the fire, only after the possible disintegration and/or fracturing of the more external part, obtaining the desired prolonged fire barrier action with time. Figure 5 shows a vertical section of the panel PA, illustrating one of the possibilities offered by this system of creating further insertion labyrinths between each panel, by applying to the panel PA further sheets of fireproof material, Fl, F3 and F2, F4 , respectively, off- axis and positive and/or negative-stepped, also asymmetrically between the two sides and also in different quantities between the two sides .

The fire barrier doors PO produced with the system described above can be of the rigid type and with a horizontal movement, such as that shown in figure 2, i.e. consisting of one or more adjacent panels PAl, PA2, PA3 wedge-inserted in each other, and inserted or not inserted in a frame TE of the known type .

These doors, according to the present invention, also preferably consist of a U-shaped draw-piece of fireproof materials joined to each other by components

(such as, for example, synthetic glues), which provide mechanical characteristics which enable the door PO to be also used intensively, said components, in the case of fire, dissolving progressively, for example by sublimation, evaporation, melting and/or carbonization, leaving the fireproof materials in position and suitable for guaranteeing a fire barrier effect.

The structure is then supported by wheels Rl, R2 in suspension or sliding inside a rail ROT fixed by known means to the ceiling SOF or to the wall PAR, to allow lateral sliding.

In other possible embodiments, moreover, the door can rest on the wheels R3, R4 on the ground, sliding inside a rail or directly on the floor.

In a preferred embodiment, the sliding of the door PO, which can be effected either manually or by adequate motorization, terminates in a vertical seat SV applied, on one side, to the wall PAR, after the jamb ST of the opening (as shown in detail in figure 2) .

In other illustrative and preferred embodiments, on the other side of the door, the closing creates a labyrinth by means of a draw-piece PRI fixed to the end of the door panel, constructed so that its outer wing penetrates, when the door closes, inside another draw- piece PRD applied to the wall PAR, which has a cavity in which the draw-piece PRI is inserted forming a labyrinth, preferably consisting of a fireproof material held together by the above gluing materials . On the side facing the opening AP, the draw-piece PRD can be protected with a fireproof panel ISL and, furthermore, the inside of the draw-piece PRD and draw- piece SV can be equipped with known thermo-expanding fireproof washers. Alternatively, the system described according to the invention can be analogously applied to fire barrier doors PO, whose opening takes place by the vertical lifting of the door panel (such as that illustrated in detail in figure 1) , normally by means of a specific motorization.

The opening can be effected totally vertically, when there is sufficient upper space, using a single panel PAl or a series of overlying panels PAl, PA2, PA3 , held together by a frame TE analogous to that shown in figure 2 for the horizontal sliding door.

Another preferred embodiment of the door according to the invention, shown in figures 1 and 7, is the known embodiment of sectional doors, whereby at least two overlying panels PAl, PA2 , PA3 are produced, joined to each other by hinges CR2, CR3 , situated on both sides of the door PO, in correspondence with which wheels of the known type RU2, RU3 are positioned.

Wheel-holder plates CB3 and wheels RUl are installed on the upper tops . Furthermore, a further two wheels RU4, applied on plates PC, are applied to the two lower tops, on which two metallic cables FU are hooked, which serve for lifting the door PO.

The wheels RUl, RU2, RU3 , RU4 , the hinges CR2 , CR3 , the plate CB3 , the plate PC and the cables FU, shown only on one side in figure 1, are in reality also positioned on the opposite and facing side of the door PO.

All the wheels RUl, RU2, RU3 , RU4 , slide inside at least one vertical rail RT, and in this way all the facing wheels not shown slide on the opposite side in at least a second rail, facing the first, not shown in figure 1.

Figure 7 is a vertical section of the door PO, applied to the wall PAR delimiting the opening AP, and shows a typical embodiment of vertical sliding of the door PO, with a folding beneath the ceiling SOF, which can be effected at any height thanks to articulated joints between the panels PAl, PA2, PA3 , with the wheels RUl, RU2, RU3, RU4 , which follow the path of the rails RT.

When the door PO closes, the part between the door PO and the architrave AT must be protected from penetration of the fire, and this is obtained, in a preferred but non-limiting version, with the formation of a labyrinth (see the enlarged view of figure 8) , consisting of a draw-piece LAl, applied to the panel PA3 and formed so that its outer wing is downwardly folded back, entering the other opposite draw-piece LA2, applied to the architrave AT of the wall PAR, which preferably contains in its interior a thermo-expanding, fireproof washer IGl of the known type which expands, for temperature values higher than a certain threshold, blocking the passage of the air current and therefore the propagation of heat . For further protection of this labyrinth, there is preferably an upper protection IS3 , applied to the panel PA3 , made of a fireproof material, which closes the door PO towards the wall PAR leaving a minimum space for vertical sliding without friction, and/or a fireproof panel IS4 applied on the lower part of the section LA2 and on the lower part of the architrave AT, to protect the lower part of the labyrinth and in particular the draw-piece LA2.

The protective fireproof panel IS3, moreover, has a width which is such that it provides an upper box- covering of the whole plan of the door PO, shown in figure 6, as far as the two vertical boxed protections ISl, IS2, above which an expanding fireproof washer is applied, which seals the opening as the temperature rises.

In the place of the labyrinth formed by the sections LAl, LA2, or in addition to this, in order to block the entry of the rising flame and heat current in the space between the architrave AT and the panel PA3, another fireproof draw-piece IS5 is applied below the fireproof panel IS4 and against the architrave AT, which holds below and facing, in the side of the panel PA3 , a metallic draw-piece PM, having a very thin thickness and which is easily deformable, following the expansion of a thermo-expanding, fireproof washer IG2 applied between the above draw-piece PM and the fireproof draw-piece IS5. The washer IG2, which expands at a certain temperature and falls by gravity under the action of the heat in the systems of the known type, is contained, according to the invention, by the draw-piece PM, which the expansion of the washer IG2 deforms until contact against the panel PA3 , thus closing the path formed between the architrave AT and the panel PA3.

In a preferred embodiment, the draw-piece PM consists of two pieces superimposed in their length, so as to relatively elongate by dilation, i.e. so that each crop of draw-piece dilates increasing the superimposition with the two adjacent crops, but remaining approximately with its original overall dimension; this is contrary to an absolute dilation, according to which a single draw- piece can be elongated, due to the heat and for the whole width of the space, even by 10%, warping and causing considerable side thrusts harmful for the fire barrier door PO. Furthermore, a further fireproof protection panel IS6 can be applied below the draw-piece PM.

Figure 6 enclosed shows in detail, in a horizontal section, the wall PAR with the two jambs STl, ST2 delimiting the width of the opening AP, the panels PAl of which the door PO consists, the two side guiding rails RTl, RT2, in which the wheels RUl, RU2 and the subsequent wheels RU3 , RU4 , run and the lifting cables FUl, FU2.

The rails RTl, RT2 , are fixed to the wall PAR, by- means of metallic and preferably angular supports SUl, SU2 which must be protected, at least for more prolonged fire resistance, from the attack of flames.

To achieve this, the supports SUl, SU2 and the rails RTl, RT2 are protected with the application of fireproof insulating panels ISl, IS2, which, in a preferred embodiment, envelop them in a box, leaving only a portion uncovered which is sufficient for preventing any contact between the panels PAl and the insulations ISl, IS2, when the door PO is upwardly open.

Furthermore, as shown in detail in figure 1, the lower part of the door PO rests on the ground on at least one washer GUI, GU2 , preferably fixed to two side draw- pieces PRl, PR2 , which are preferably assembled separate to break the heat bridge, but optionally also joined to each other forming a single lower containment draw-piece, preferably made of fireproof material. AIl the joints between the panels PAl, PA2, PA3 , moreover, can be equipped with fireproof washers, which dilate with the heat and are incombustible, of the known type. The perimetric sealing of the single panel or series of panels PAl, PA2, PA3 , hinged to each other in the case of the embodiment with articulated vertical lifting (figures 1 and 7) , can be effected, as shown in the section of figure 6, with washers of the known brim type GTl, GT2 , or with another section, to which contiguous thermo-expanding and fireproof washers of the known type can be added, which block the flame propagation.

Contiguous thermo-expanding washers GT3, of the known type, can also be added to the lower side of the door PO, as shown in detail in figure 1.

The characteristics of the fire barrier door with a vertical and/or horizontal opening, object of the present invention, appear evident from the above description, as also the advantages obtained. Finally, numerous other variants can obviously be applied to the fire barrier door in question, all included in the novelty principles of the inventive idea. It is also evident that in the practical embodiment of the invention, the functions, materials, forms and dimensions of the details illustrated can vary according to requirements and can be substituted with other technically equivalent elements.

Claims

1. A fire barrier door (PO), with a vertical or horizontal opening, characterized in that it is constructed with fireproof materials joined by adhesive components which progressively dissolve in the case of fire, leaving the fireproof materials in position and with fireproof capacities suitable for maintaining the fire diffusion barrier for certain periods of time.

2. The fire barrier door (PO) according to claim 1, characterized in that said fireproof materials can comprise glass fibres and/or rock wool, with the fibres preferably in a crossed arrangement in order to provide protection.

3. The fire barrier door (PO) according to claim 1, characterized in that said fireproof materials are kept joined and reinforced by said adhesive components, natural or chemical, such as for example animal or vegetable glues, or by plastic products, in order to make said door (PO) solid and stable in its dimensions, within a certain nominal temperature range, also allowing its intensive use, and maintaining its lightness.

4. The fire barrier door (PO) according to claim 2, I characterized in that, in the case of exposure to fire on one side and/or on the other, said door (PO) progressively loses, for example by sublimation or melting or evaporation, starting from the side exposed to the flames, part or all of said components which provide mechanical solidity, keeping however the fibres of said fireproof materials, which form the fire barrier, in position, whereas the side not exposed to the fire reaches melting and/or sublimation or evaporation temperatures only after a certain period of time following the fire attack, maintaining the fireproof fibres of the side attacked by fire, in position.

5. The fire barrier door (PO) according to claim 1, characterized in that it comprises one or more panels (PAl, PA2, PA3) , each consisting of at least two sides (FACl, FAC2) , joined to each other by at least two joining sections (SEl, SE2, SE3 , SE4), with at least one chamber (CAl, CA2, CA3) situated between said sides (FACl, FAC2) .

6. The fire barrier door (PO) according to claim 5, characterized in that said joining sections (SEl, SE2 , SE3, SE4) include terminal sections (SEl, SE2) , formed so as to allow each panel (PA2) to be coupled by insertion to contiguous panels (PAl, PA3) , at least a first joining section (SE5, SE6) of at least one of said panels (PA2) penetrating inside at least a second joining section

(SEl, SE7) of at least one of said contiguous panels (PAl, PA3) , thus forming together a labyrinth and/or a nest insertion, in order to prevent infiltrations from one side to the other of the door (PO) .

7. The fire barrier door (PO) according to claim 5, characterized in that each of said panels (PAl, PA2, PA3) is used in a single piece (PA) or in several panels (PA) flanked, inserted or not inserted inside at least one shaped framework (TE) and/or shaped washers.

8. The fire barrier door (PO) according to claim 5, characterized in that said chambers (CAl, CA2, CA3) of each panel (PA) are filled with expanding fireproof material, in order to block the air and heat circulation, if a certain temperature is reached, maintaining a substantial lightness of the structure.

9. The fire barrier door (PO) according to claim 5, characterized in that said chambers (CAl, CA2, CA3) of each panel (PA) are filled with consistent and heavy- fireproof material, such as rock wool, in order to block the air circulation and limit the diffusion of heat, outside at least one of said sides (FACl) as there is at least one perimetric and/or infra-perimetric framework (COR, CORl, C0R2) , made of a fireproof material, which defines at least a further chamber (CA4) covered, outside the frame (COR), by at least one fireproof sheet (Fl, F3) .

10. The fire barrier door (PO) according to claim 9, characterized in that said further chamber (CA4) is filled with other fireproof material (LR) , such as, for example rock wool or other fireproof materials.

11. The fire barrier door (PO) according to claim 9, characterized in that at least one fireproof sheet (Fl,

F3; F2, F4) is applied directly on at least one of said sides (FACl, FAC2) of the panel (PA) .

12. The fire barrier door (PO) according to claim 11, characterized in that said fireproof sheets (Fl, F3 ; F2, F4) are applied on the panel (PA) in an off-axis and positive and/or negative stepped manner, also asymmetrically and/or in different quantities between the two sides of said panel (PA) .

13. The fire barrier door (PO) according to claim 1, characterized in that it is of the rigid type and with horizontal sliding, said sliding being effected manually or by adequate motorization and terminating inside at least one vertical seat (SV) applied to a wall (PAR) , in front of at least one jamb (ST, STl, ST2) , said door (PO) also being produced with one or more contiguous panels (PA, PAl, PA2, PA3) , wedge-inserted in each other, and inserted or not inserted in at least one perimetric frame (TE) .

14. The fire barrier door (PO) according to claim 13, characterized in that said horizontal door (PO) is supported by at least a first pair of wheels (Rl, R2) , in suspension and/or sliding inside at least one rail (ROT) , fixed to a ceiling (SOF) or to a wall (PAR) , in order to be able to slide sideways .

15. The fire barrier door (PO) according to claim 13, characterized in that it uses at least a second pair of wheels (R3, R4) which rest on the ground, so as to slide inside a rail or directly on the floor.

16. The fire barrier door (PO) according to claim 13, characterized in that, in correspondence with an opposite side of said jamb (ST, STl, ST2) , the closure creates a labyrinth, by means of at least one draw-piece (PRI) fixed to at least one end of the door panel of the door (PO) , said first draw-piece (PRI) being constructed so that at least one of its outer end portions penetrates, upon the closing of the door (PO) , inside a cavity of at least a second draw-piece (PRD) , applied to the wall

(PAR) , said labyrinth being filled with said fireproof materials held together by said adhesive components .

17. The fire barrier door (PO) according to claim 16, characterized in that said second draw-piece (PRD) is protected with at least one fireproof panel (ISL) .

18. The fire barrier door (PO) according to claim 16, characterized in that said second draw-piece (PRD) , as also said vertical seat (SV) , are equipped with fireproof thermo-expanding washers.

19. The fire barrier door (PO) according to claim 1, characterized in that the opening of the door (PO) takes place by the vertical lifting of the door panel, normally effected by suitable motorization, and said door (PO) envisages a single panel (PAl) or a series of superimposed panels (PA, PAl, PA2, PA3) , held together by at least one perimetric framework (TE) and/or by shaped washers .

20. The fire barrier door (PO) according to claim 19, characterized in that it is of the sectional type and comprising at least two superimposed panels (PA, PAl, PA2, PA3) , joined to each other by hinges (CRl, CR2 , CR3) , situated on both sides of the same side of the door (PO) , in correspondence with which first rails (RUl, RU2, RU3) , sliding on at least one vertical rail (RT, RTl, RT2) , are applied.

21. The fire barrier door (PO) according to claim 20, characterized in that, at the lower tops of the door (PO) , second rails (RU4) are applied, which slide inside at least one vertical rail (RT, RTl, RT2) and applied on plates (PC) , on which respective cables (FU, FUl, FU2) are hooked, which can be used for the lifting of the door panel, which forms an opening (AP) .

22. The fire barrier door (PO) according to claim 21, characterized in that, said lifting and/or vertical sliding of the door (PO) envisages a folding below a ceiling (SOF) , which can be effected at any height thanks to the presence of a series of joints positioned between each panel (PA, PAl, PA2 , PA3) , said first and second rails (RUl, RU2, RU3, RU4) following the path of respective vertical rails (RT, RTl, RT2) .

23. The fire barrier door (PO) according to claim 20, characterized in that between said door (PO) and the architrave (AT) there is a labyrinth, formed by at least one first draw-piece (LAl) , said first draw-piece (LAl) being applied to at least a first panel (PA3) of the door

(PO) and being formed in such a way that at least one of its outer end portion penetrates inside at least a second draw-piece (LA2) , opposite said first draw-piece (LAl) , said second draw-piece (LA2) in turn being applied to the architrave (AT) of the wall (PAR) , which contains in its interior at least one thermo-expanding, fireproof washer (IGl) , suitable for expanding, for temperature values higher than a certain threshold, in order to block the passage of air current and propagation of heat.

24. The fire barrier door (PO) according to claim 23, characterized in that, above said first panel (PA3) , at least one protection element (IS3) , made of fireproof material, is applied, which allows the closing of the door (PO) , leaving a minimum space, in order to obtain a vertical sliding without friction.

25. The fire barrier door (PO) according to claim 23, characterized in that, on the lower part of said second draw-piece (LA2) and architrave (AT), at least a first panel or fireproof draw-piece (IS4) is applied, suitable for at least partially protecting said labyrinth and said second draw-piece (LA2) .

26. The fire barrier door (PO) according to claim 25, characterized in that, below said first panel or fireproof draw-piece (IS4) and against the architrave

(AT) , at least one second panel or fireproof draw-piece

(IS5) is applied, which carries at least one deformable metallic draw-piece (PM) , following the expansion of at least one thermo-expanding, fireproof washer (IG2) , applied between said metallic draw-piece (PM) and said second panel or fireproof draw-piece (IS5) , in order to block the entry of the rising flame and heat current in the space between the architrave (AT) and said first panel (PA3) .

27. The fire barrier door (PO) according to claim 26, characterized in that said thermo-expanding and fireproof washer (IG2) , which expands at a certain temperature and falls by gravity under the action of heat, is contained by said metallic draw-piece (PM) , said metallic draw- piece (PM) being forced to become deformed due to the expansion of said thermo-expanding and fireproof washer

(IG2) until it comes into contact with said first panel

(PA3), so as to close the opening existing between the architrave (AT) and said first panel (PA3) .

28. The fire barrier door (PO) according to claim 26, characterized in that said metallic draw-piece (PM) consists of various pieces each superimposed to other in the direction of their length, so as to elongate by dilation in a relative way, i.e. so that each piece of said draw-piece (PM) dilates increasing the superimposition with two adjacent pieces, but approximately remaining in its original overall dimension.

29. The fire barrier door (PO) according to claim 26, characterized in that, below said metallic draw-piece (PM) , at least a further fireproof protection panel (IS6) is applied.

30. The fire barrier door (PO) according to claim 22, characterized in that said rails (RT, RTl, RT2) are fixed to the wall (PAR) , by means of shaped supports (SUl, SU2) , which are protected at least from flame attack.

31. The fire barrier door (PO) according to claim 30, characterized in that said shaped supports (SUl, SU2) and said rails (RT, RTl, RT2) are protected by the application of fireproof insulating panels (ISl, IS2) .

32. The fire barrier door (PO) according to claim 31, characterized in that said fireproof insulating panels (ISl, IS2) envelop said shaped supports (SUl, SU2) and/or said rails (RT, RTl, RT2) in a box configuration, leaving at least a portion uncovered in order to avoid contact between said panels (PA, PAl, PA2 , PA3) of the door (PO) and said fireproof insulating panels (ISl, IS2) , when the door (PO) is opened upwards.

33. The fire barrier door (PO) according to claim 19, characterized in that at least a lower portion of the door (PO) rests on the ground on at least one washer (GUI, GU2) , fixed to at least one respective side draw- piece (PRl, PR2) .

34. The fire barrier door (PO) according to claim 33, characterized in that said side draw-pieces (PRl, PR2) are assembled separate to cut the heat bridge or joined to each other forming a single lower containment draw- piece, preferably made of fireproof material.

35. The fire barrier door (PO) according to claim 22, characterized in that said joints, envisaged between the panels (PA, PAl, PA2 , PA3) of the door (PO) , are equipped with fire-resistant washers, dilatable with heat and incombustible .

36. The fire barrier door (PO) according to claims 7 or 19, characterized in that said shaped washers are of the brim type (GTl, GT2) , or with another profile, to which contiguous thermo-expanding and fireproof washers (GT3) can be added, which block the flame propagation.

37. The fire barrier door (PO) according to claim 36, characterized in that said thermo-expanding and fireproof washers (GT3) are applied below the door (PO) , in a position adjacent to the floor, when the door (PO) is closed.

38. A fire barrier door (PO) with a vertical and/or horizontal opening as substantially described and illustrated and for the purposes specified above.