WO1999023340A1 - Fire door - Google Patents

Fire door Download PDF

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Publication number
WO1999023340A1
WO1999023340A1 PCT/NO1998/000321 NO9800321W WO9923340A1 WO 1999023340 A1 WO1999023340 A1 WO 1999023340A1 NO 9800321 W NO9800321 W NO 9800321W WO 9923340 A1 WO9923340 A1 WO 9923340A1
Authority
WO
WIPO (PCT)
Prior art keywords
door leaf
fire door
joining plate
metal plates
joining
Prior art date
Application number
PCT/NO1998/000321
Other languages
French (fr)
Inventor
Børge BØGELUND
Original Assignee
Boegelund Boerge
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boegelund Boerge filed Critical Boegelund Boerge
Priority to AU10568/99A priority Critical patent/AU1056899A/en
Publication of WO1999023340A1 publication Critical patent/WO1999023340A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/82—Flush doors, i.e. with completely flat surface
    • E06B3/822—Flush doors, i.e. with completely flat surface with an internal foursided frame
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/82—Flush doors, i.e. with completely flat surface
    • E06B3/827—Flush doors, i.e. with completely flat surface of metal without an internal frame, e.g. with exterior panels substantially of metal

Definitions

  • This inventions relates to arrangements in fire doors of the kind as defined in the preamble of claim 1.
  • Fire doors are built in into house buildings, ships, offshore installations and so forth.
  • the task of fire doors is to prevent that the initial state of a fire or local small fires from one place in e.g. a house building is given the opportunity to spread to other parts in the building.
  • a fire door's degree of safety is determined on the basis of for how long the fire door is in a position to prevent that heat having a fire initiating temperature is given the opportunity to spread. This degree of safety can be measured as an increase in temperature per time unit at the fire door's side exposed to fire.
  • a leaf for a fire door is made in that, between two parallel, spaced thin metal plates, a 40-60 millimetres thick fire and heat impeding insulation layer is inserted.
  • the insulation layer prevents heat transfer from the hot side (exposed side) of the fire door leaf to the cold side thereof (unexposed side) .
  • the classification of the door leaf is calculated on the basis of for how long its cold side, after having been subjected to strong heat, does not exceed a given temperature after a cer- tain number of minutes (30, 60, 90 or 120 minutes) . These criteria also pass for the fire door's frame, locking case and so forth.
  • a main problem in the production of known fire doors has been that the surfaces of the door leaf are formed by metal plates having a thickness of 1 - 1.5 millimetres and these conduct heat. Immediately this leads to a higher temperature at the cold side of the fire door. Most producers of fire doors try to compensate for this disadvantage by increasing the overall thickness of the door leaf in order to, thus, reduce heat transfer by letting the distance from the outer wall of the door leaf to the inner wall thereof increase in a degree corresponding to a desired heat transfer reduction.
  • the two surrounding metal plates of the door leaf of today's fire doors are attached in that four inwardly folded end sides are riveted, screwed or welded together.
  • a solid, strong and surrounding joining is achieved.
  • said joining constitutes an efficient and undesirable heat bridge.
  • the object of the invention has been to improve fire doors generally and, thus, primarily reduce said heat transport in the metal of the fire door leaf's surface layer.
  • a fire door of the kind as defined in the preamble of claim 1 is formed, shaped and designed in conformity with the characterizing clause of claim 1 and, thus, exhibiting the particular features appearing therefrom.
  • a fire door leaf has been developed in accordance with the inven- tion, wherein an insulating, heat durable heat breaking body which, through its positioning between the opposing, adjacent joining plate portions of two door leaf plates, substantially breaks the previously mentioned, heat conducting effect in the door leaf.
  • an insulating, heat durable heat breaking body which, through its positioning between the opposing, adjacent joining plate portions of two door leaf plates, substantially breaks the previously mentioned, heat conducting effect in the door leaf.
  • the screws should advantageously have the opportunity of being screwed into internal, threaded blind bores in a bracing/ strengthening flat iron frame extending unbrokenly along the door leaf circumference, inside the innermost circumferential portion of the rear metal plate.
  • the circumferential frame shaped, insulating, heat durable heat breaker body is constituted of a shape durable, relatively rigid insulation body.
  • a rigid insulation body could be provided with predrilled, smooth screw holes or si - ply be screwed through the material during the joining of the two door leaf plates. Many different insulation materials will be usable.
  • small heat bridges are formed, but these can be neglected in relation to the heat breaking ef- feet achieved according to the invention.
  • the special solution to the defined problem results in that the new fire door leaf exhibits the same thermal insulation effect in connection with a reduced door leaf thickness as a particularly thicker, known door leaf.
  • Figure 1 shows in perspective an exploded view illustrating the front and rear metal plates of a fire door leaf
  • Figure 2 shows a section through a fire door leaf according to the invention.
  • Lower metal plate 10 of the door leaf of figure 1 corresponds to rear metal plate of the fire door
  • upper metal plate 12 corresponds to the front plate.
  • the door leaf of the fire door is assembled from the two metal plates 10, 12 by means of their circumferential configurations.
  • the front plate 12 preferably, has the same circumferentially cross-sectional shape along its entire outer circumference, and that the rear plate 10 has substantially the same circumferential edge configuration along its inner circumference, such as this edge configuration is visible especially for the rear metal plate in figure 1.
  • the front plate's 12 projecting circumferential flange 18 of metal plate and a similar circumferential flange 10* of metal plate from the rear plate 10 are, as previously known, formed as hollow bodies and are, as all remaining cavities between the door leaf halves 10 and 12, filled with e.g. calcium silicate 19 or another thermal insulating material.
  • Inwardly of the rear metal plate's 10 circumferential flange 10' is disposed a thick, bracing, strengthening flat steel frame 22, the circumferential shape thereof following the course of the heat breaker body 16.
  • the calcium silicate layer appearing in the form of granules may, between the opposing inner faces 10", 12" of the metal plates 10, 12, have a thickness of 40 - 60 millimetres, representing technique known per se.
  • the invention consisting in the building in of a heat breaker 16 in the door leaf 10,12 of as fire door, said heat breaker 16 extending along the entire circumference of the door leaf, im- mediately inwardly of the freely terminating outer edge portions 10''', 12''' of the projecting flanges 18, 10', said edge portions being mutually parallel and extending perpendicularly to the plane of the two metal plates 10, 12.
  • inwardly di- rected, threaded holes 32 are formed, said holes preferably forming blind bores, accommodating attachment screws 34. Due to the circumferential frame shaped heat breaker body's 16 consistence and structure, the attachment screws 34 can be screwed through the heat breaker body 16, or screw holes therefore can be predrilled therein.
  • the broad circumferential flange 18 of the front plate 12 is formed by an outer circumferential edge portion of the front plate, said circumferential edge portion outermostly passing into a first right-angledly bent out metal plate portion 24 which, in its turn, passes into a right-angledly bent plate portion 26 extending parallel to the plane of the front plate 12, and passing into said one freely terminating outer edge portion 12 ' ' ' .
  • the rear metal plate's 10 circumferential edge configuration is, in principle, correspondingly.
  • the broad circumferential flange 10' is formed by an outer plate circumferential edge portion passing into a right-angledly bent out, second metal plate portion 28 which, in its turn, passes into a right-angledly bent plate portion 30 which, again, passes into said second, freely terminating outer edge portion 10 ' • ' which is withdrawn in relation to the front plate's 12 freely ending outer edge portion 12 * ' ' .
  • the opposing main portions of the freely terminating outer edge portions 10 ' • • , 12 * ' ' form a broad, endless, chamber-like groove for the accommoda- tion of the endless heat breaker body 16.
  • each metal plate 10, 12 in assembled position exhibits a circumferential edge face shaped joining por- tion 10 ' ' ' , 12 * ' ' extending substantially right-angledly on the two opposite outer main faces of the fire door leaf, and which, in parallel orientation, are spaced in such a distance that substantially corresponds to the thickness dimension of the heat breaker body 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)

Abstract

A fire door leaf comprises two parallel outer metal plates (10, 12) which each, along the circumference of the door leaf, exhibits a joining plate portion (10''', 12''') passing into respective outer metal plates (10, 12), as well as assigned fastening means, such as screws (34), for joining the metal plates (10, 12). Parallel, adjacent joining plate portions (10''', 12''') are disposed spaced from each other perpendicularly to the door leaf, and in the space between the joining plate portions (10''', 12''') is disposed a shape durable thermal insulation body (16) following the circumference of the fire door leaf and forming a heat breaker body.

Description

FI RE DOOR
This inventions relates to arrangements in fire doors of the kind as defined in the preamble of claim 1.
Fire doors are built in into house buildings, ships, offshore installations and so forth. The task of fire doors is to prevent that the initial state of a fire or local small fires from one place in e.g. a house building is given the opportunity to spread to other parts in the building. A fire door's degree of safety is determined on the basis of for how long the fire door is in a position to prevent that heat having a fire initiating temperature is given the opportunity to spread. This degree of safety can be measured as an increase in temperature per time unit at the fire door's side exposed to fire.
The demands made on fire doors are necessarily great. To ascertain that the products are complying with these requirements are controlled through thorough testing of the products in internationally authorised test institutes.
The great requirements made on the functional properties of the fire doors and on the general quality thereof lead to very high production costs. In accordance with prior art technique, a leaf for a fire door is made in that, between two parallel, spaced thin metal plates, a 40-60 millimetres thick fire and heat impeding insulation layer is inserted. The insulation layer prevents heat transfer from the hot side (exposed side) of the fire door leaf to the cold side thereof (unexposed side) . The classification of the door leaf is calculated on the basis of for how long its cold side, after having been subjected to strong heat, does not exceed a given temperature after a cer- tain number of minutes (30, 60, 90 or 120 minutes) . These criteria also pass for the fire door's frame, locking case and so forth.
A main problem in the production of known fire doors has been that the surfaces of the door leaf are formed by metal plates having a thickness of 1 - 1.5 millimetres and these conduct heat. Immediately this leads to a higher temperature at the cold side of the fire door. Most producers of fire doors try to compensate for this disadvantage by increasing the overall thickness of the door leaf in order to, thus, reduce heat transfer by letting the distance from the outer wall of the door leaf to the inner wall thereof increase in a degree corresponding to a desired heat transfer reduction.
This increase of the wall thickness of the fire door leaf has developed such that the thickness now has reached 70 millime- tres. This is not desirable, neither technically, economically nor aesthetically. Especially disadvantageous is the weight as well as the price.
The two surrounding metal plates of the door leaf of today's fire doors are attached in that four inwardly folded end sides are riveted, screwed or welded together. Thus, a solid, strong and surrounding joining is achieved. However, said joining constitutes an efficient and undesirable heat bridge. The object of the invention has been to improve fire doors generally and, thus, primarily reduce said heat transport in the metal of the fire door leaf's surface layer.
According to the invention, the object is realised in that a fire door of the kind as defined in the preamble of claim 1, is formed, shaped and designed in conformity with the characterizing clause of claim 1 and, thus, exhibiting the particular features appearing therefrom. More specifically, a fire door leaf has been developed in accordance with the inven- tion, wherein an insulating, heat durable heat breaking body which, through its positioning between the opposing, adjacent joining plate portions of two door leaf plates, substantially breaks the previously mentioned, heat conducting effect in the door leaf. Through the joining portions of the two outer metal plates, extend attachment screws, bolts or the like. The screws should advantageously have the opportunity of being screwed into internal, threaded blind bores in a bracing/ strengthening flat iron frame extending unbrokenly along the door leaf circumference, inside the innermost circumferential portion of the rear metal plate.
The circumferential frame shaped, insulating, heat durable heat breaker body is constituted of a shape durable, relatively rigid insulation body. Such a rigid insulation body could be provided with predrilled, smooth screw holes or si - ply be screwed through the material during the joining of the two door leaf plates. Many different insulation materials will be usable. At metal plate contact establishing points of the attachment screws, small heat bridges are formed, but these can be neglected in relation to the heat breaking ef- feet achieved according to the invention.
The special solution to the defined problem results in that the new fire door leaf exhibits the same thermal insulation effect in connection with a reduced door leaf thickness as a particularly thicker, known door leaf. A thinner fire door leaf having the same thermal insulating quality as particularly thicker, more material-demanding, heavier known products, involves economical and aesthetic advantages as well as in respect of weight and resources.
An exemplary embodiment of a fire door leaf is further explained in the following, reference being made to the accompanying drawing, wherein:
Figure 1 shows in perspective an exploded view illustrating the front and rear metal plates of a fire door leaf; and
Figure 2 shows a section through a fire door leaf according to the invention.
Lower metal plate 10 of the door leaf of figure 1 corresponds to rear metal plate of the fire door, and upper metal plate 12 corresponds to the front plate. The door leaf of the fire door is assembled from the two metal plates 10, 12 by means of their circumferential configurations.
It is presupposed that the front plate 12, preferably, has the same circumferentially cross-sectional shape along its entire outer circumference, and that the rear plate 10 has substantially the same circumferential edge configuration along its inner circumference, such as this edge configuration is visible especially for the rear metal plate in figure 1.
At the external side of the rear metal plate 10, on a broad, outwardly directed circumferential edge forming flange 10', placed an endless, rigid and shape durable heat breaker body in the form of a high quality heat insulating layer 16. The insulation layer 16 constituting the essence of the invention is mounted in between the en sides of the door leaf 10,12; a further account of which will be given later.
The front plate's 12 projecting circumferential flange 18 of metal plate and a similar circumferential flange 10* of metal plate from the rear plate 10 are, as previously known, formed as hollow bodies and are, as all remaining cavities between the door leaf halves 10 and 12, filled with e.g. calcium silicate 19 or another thermal insulating material. Inwardly of the rear metal plate's 10 circumferential flange 10' is disposed a thick, bracing, strengthening flat steel frame 22, the circumferential shape thereof following the course of the heat breaker body 16. The calcium silicate layer appearing in the form of granules, may, between the opposing inner faces 10", 12" of the metal plates 10, 12, have a thickness of 40 - 60 millimetres, representing technique known per se.
On the other side, it is mainly the insulating, substantially shape durable, circumferential frame shaped body 16 between joining portions 10''', 12''' of the plates that breaks the undesired heat conducting effect between the metal in the fire door leaf's two configured metal plates 10, 12, the invention consisting in the building in of a heat breaker 16 in the door leaf 10,12 of as fire door, said heat breaker 16 extending along the entire circumference of the door leaf, im- mediately inwardly of the freely terminating outer edge portions 10''', 12''' of the projecting flanges 18, 10', said edge portions being mutually parallel and extending perpendicularly to the plane of the two metal plates 10, 12.
In the quadrangular frame of flat steel 22, inwardly di- rected, threaded holes 32 are formed, said holes preferably forming blind bores, accommodating attachment screws 34. Due to the circumferential frame shaped heat breaker body's 16 consistence and structure, the attachment screws 34 can be screwed through the heat breaker body 16, or screw holes therefore can be predrilled therein.
As a result of the heat breaker body 16, heat transfer between the metallic plate portions of the door leaf is reduced to an essential degree.
The broad circumferential flange 18 of the front plate 12 is formed by an outer circumferential edge portion of the front plate, said circumferential edge portion outermostly passing into a first right-angledly bent out metal plate portion 24 which, in its turn, passes into a right-angledly bent plate portion 26 extending parallel to the plane of the front plate 12, and passing into said one freely terminating outer edge portion 12 ' ' ' . The rear metal plate's 10 circumferential edge configuration is, in principle, correspondingly. Here, the broad circumferential flange 10' is formed by an outer plate circumferential edge portion passing into a right-angledly bent out, second metal plate portion 28 which, in its turn, passes into a right-angledly bent plate portion 30 which, again, passes into said second, freely terminating outer edge portion 10 ' • ' which is withdrawn in relation to the front plate's 12 freely ending outer edge portion 12 * ' ' .
Thus, it will be appreciated that the opposing main portions of the freely terminating outer edge portions 10 ' • • , 12 * ' ' form a broad, endless, chamber-like groove for the accommoda- tion of the endless heat breaker body 16.
The invention is not restricted to the shown circumferential configurations at the fire door leaf's metal plate edges. It is sufficient that each metal plate 10, 12 in assembled position exhibits a circumferential edge face shaped joining por- tion 10 ' ' ' , 12 * ' ' extending substantially right-angledly on the two opposite outer main faces of the fire door leaf, and which, in parallel orientation, are spaced in such a distance that substantially corresponds to the thickness dimension of the heat breaker body 16.

Claims

C l a i m s
1. Arrangements in a fire door leaf comprising two parallel outer metal plates (10, 12) each of which, along the circumference of the door leaf, exhibits a joining plate portion (10'1', 12''') passing into the respective outer metal plate (10, 12) , and is assigned fastening means such as screws (34) , bolts etc. for the joining of the metal plates (10, 12), c h a r a c t e r i z e d i n that parallel, adjacent joining plate portions (10' ' ' , 12 ' ΓÇó ΓÇó ) are disposed spaced from each other preferably right-angledly to the longitudinal extent thereof, and that a shape durable thermal insulation body (16) is disposed within the space between the joining plate portions (10' ' ΓÇó , 12 ' ' ' ) , following the circumference of the fire door leaf and forming a heat breaker body.
2. Arrangements in a fire door leaf as defined in claim 1, c h a r a c t e r i z e d i n that inwardly of the innermost joining plate portion (10''1) in the joined position of the door leaf, a circumferential frame (22) has been dis- posed, preferably of steel and extending parallel to the two joining plate portions (10''', 12''') of the metal plates (10, 12), said circumferential frame (22) being formed with screw holes (32) for screws (34) which, moreover, extend through aligned holes in the two joining plate portions (10' ' ' , 12 ' ' ' ) and through the shape durable heat breaker body (16) .
PCT/NO1998/000321 1997-11-03 1998-10-28 Fire door WO1999023340A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10568/99A AU1056899A (en) 1997-11-03 1998-10-28 Fire door

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO975050 1997-11-03
NO975050A NO305874B1 (en) 1997-11-03 1997-11-03 Device by fire leaf

Publications (1)

Publication Number Publication Date
WO1999023340A1 true WO1999023340A1 (en) 1999-05-14

Family

ID=19901282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1998/000321 WO1999023340A1 (en) 1997-11-03 1998-10-28 Fire door

Country Status (3)

Country Link
AU (1) AU1056899A (en)
NO (1) NO305874B1 (en)
WO (1) WO1999023340A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052418A1 (en) * 2006-10-26 2008-05-08 Rujie Chen A fireproof door
FR2995338A1 (en) * 2012-09-07 2014-03-14 Blindages De France Opening frame for armored door, has facings encased above each other, so that lateral sides of facings are partially covered, where fixing unit of facings comprises fasteners formed by screws or rivets traversing and clamping lateral sides
CN105134038A (en) * 2014-06-06 2015-12-09 宋伟滨 Novel door leaf of fire-proof door
CN108060880A (en) * 2016-11-08 2018-05-22 陈宣铭 The fire resistant doorsets composition structure of thermal deformation can be improved
EP4089259A3 (en) * 2021-05-12 2022-11-23 Sommer Fassadensysteme-Stahlbau-Sicherheitstechnik GmbH & Co. KG Closure device for the thermal separation of building openings or spaces

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107975328B (en) * 2016-10-21 2019-10-29 陈宣铭 The fire resistant doorsets composed structure of thermal deformation can be improved

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133095A6 (en) * 1971-04-07 1972-11-24 Assie Jacqueline
DE2232432A1 (en) * 1971-08-04 1973-02-15 Voest Ag STEEL FIRE RESISTANT DOOR
DE3231968A1 (en) * 1982-04-16 1983-10-27 Dictator Technik - Ruef & Co, 8902 Neusäß Fire protection door

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133095A6 (en) * 1971-04-07 1972-11-24 Assie Jacqueline
DE2232432A1 (en) * 1971-08-04 1973-02-15 Voest Ag STEEL FIRE RESISTANT DOOR
DE3231968A1 (en) * 1982-04-16 1983-10-27 Dictator Technik - Ruef & Co, 8902 Neusäß Fire protection door

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052418A1 (en) * 2006-10-26 2008-05-08 Rujie Chen A fireproof door
FR2995338A1 (en) * 2012-09-07 2014-03-14 Blindages De France Opening frame for armored door, has facings encased above each other, so that lateral sides of facings are partially covered, where fixing unit of facings comprises fasteners formed by screws or rivets traversing and clamping lateral sides
CN105134038A (en) * 2014-06-06 2015-12-09 宋伟滨 Novel door leaf of fire-proof door
CN108060880A (en) * 2016-11-08 2018-05-22 陈宣铭 The fire resistant doorsets composition structure of thermal deformation can be improved
CN108060880B (en) * 2016-11-08 2019-07-09 陈宣铭 The fire resistant doorsets composed structure of thermal deformation can be improved
EP4089259A3 (en) * 2021-05-12 2022-11-23 Sommer Fassadensysteme-Stahlbau-Sicherheitstechnik GmbH & Co. KG Closure device for the thermal separation of building openings or spaces

Also Published As

Publication number Publication date
NO975050L (en) 1999-05-04
NO305874B1 (en) 1999-08-09
AU1056899A (en) 1999-05-24
NO975050D0 (en) 1997-11-03

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