EP0445613A1 - Caisse de protection contre l'incendie - Google Patents

Caisse de protection contre l'incendie Download PDF

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Publication number
EP0445613A1
EP0445613A1 EP91102689A EP91102689A EP0445613A1 EP 0445613 A1 EP0445613 A1 EP 0445613A1 EP 91102689 A EP91102689 A EP 91102689A EP 91102689 A EP91102689 A EP 91102689A EP 0445613 A1 EP0445613 A1 EP 0445613A1
Authority
EP
European Patent Office
Prior art keywords
flap
protection box
flap wing
fire protection
box according
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP91102689A
Other languages
German (de)
English (en)
Other versions
EP0445613B1 (fr
Inventor
Gottfried Müller
Paul Hipp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schako KG
Original Assignee
Schako Metallwarenfabrik Ferdinand Schad KG
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 Schako Metallwarenfabrik Ferdinand Schad KG filed Critical Schako Metallwarenfabrik Ferdinand Schad KG
Publication of EP0445613A1 publication Critical patent/EP0445613A1/fr
Application granted granted Critical
Publication of EP0445613B1 publication Critical patent/EP0445613B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers

Definitions

  • the invention relates to a fire protection box within an air duct system comprising a housing with an air inlet and an air outlet opening and a flap wing for interrupting the air flow.
  • Such fire protection boxes are known in many forms and designs. As a rule, there is a flap within the line system in the area of the fire protection box, which can be pivoted about a central axis. In the normal case, this flap lies horizontally in the direction of flow of the air, so that the air flow is hampered as little as possible. As soon as a fire occurs, a fuse responds, for example to an increased temperature, and releases a flap holder.
  • the flap then falls into a position in which it closes the free passage within the air duct system.
  • the effectiveness of the fire damper essentially depends on the fact that it does not warp or deform, even at elevated temperatures, and thus does not form any gaps or openings through which air can continue to flow. For this reason, such flaps are stiffened in many ways and provided with inserts made of insulating material. On the one hand, this is complex, and on the other hand it is insufficient in many cases.
  • the inventor set himself the task of building a fire protection box from the above. To develop a type which, in the event of a fire, be it inside the air duct system or outside, closes the air duct system safely and reliably, so that there is no more air flow through which the fire can receive new food.
  • a flap wing for closing in the event of fire is assigned to both the air inlet opening and the air outlet opening.
  • both flap wings are to be coupled to one another, so that one flap wing automatically closes its corresponding opening when the other flap wing is closed.
  • This design considerably reduces the effort that is necessary, for example, in the case of adjacent flap wings that have been present to date. It is sufficient if an appropriate fire protection device is assigned to only one flap wing.
  • the design is further improved if one flap wing holds the other flap wing in the closed position.
  • the arrangement in the present exemplary embodiment is selected such that one flap wing, which, for example, consists only of a relatively thin metal plate and would therefore be more easily deformable at elevated temperature, is pressed against the opening by the other flap wing, so that the other flap wing is deformed prevents.
  • the other flap wing can be designed to be relatively strong, a heavy metal plate being provided here, which can additionally be covered with an insulating plate. This second flap cannot deform on the one hand because of its thickness and on the other hand because of the insulating layer lying on top, and at the same time keeps the relatively thin metal plate pressed against the interior of the housing to close the other opening.
  • Both flap wings each rotate about a hinge, the arrangement of the hinges being described below in a preferred exemplary embodiment.
  • a locking device is assigned to one of the flap wings, which holds this flap wing in the open position, as a result of which the other flap wing is also held in the open position.
  • a swivel bolt is provided here, which is fastened inside the housing and has a leg with a groove which, in the open position, holds a rail formed onto the flap wing in the manner of a hook.
  • This pivot bolt is rotatable about an axis so that when it rotates, the rail slides out of the groove and the flap is released.
  • the swivel bolt is rotated around its axis by at least one fuse.
  • this fusible link has a bolt which engages another leg of the swivel bar and, as soon as the fusible link releases, presses on this leg and rotates the swivel bar about the axis.
  • the rail is then released so that a flap wing can fall shut.
  • the other flap wing which is only held by the first flap wing, then also closes.
  • the bolts of the fusible link fuse are under spring pressure.
  • the spring is held in this pretensioned position by two metal plates, which are connected to each other by a fusible link. As soon as a temperature of 72 ° C is exceeded, this fusible link releases, so that the spring is released, which moves the bolt against the swivel bolt.
  • the swivel bolt is attacked by two fuses, one of which is located inside the air control system and the other of which is arranged outside of the fire box. In this way, both a fire within the air duct system and a fire in the room are detected. In any case, the flap wings are brought into their closed position.
  • a very simple possibility of automatically closing the second flap wing is provided when the two air inlet or outlet openings are arranged approximately perpendicular to one another.
  • One opening should connect approximately horizontally to the air duct system, while the air outlet opening, for example, runs perpendicular to it as a ceiling outlet. It is sufficient here if the flap wing has a hinge for this air inlet opening above this air inlet opening.
  • the flap wing for the air outlet opening has a hinge which is arranged far away from the air inlet opening.
  • the freely moving parts of the flap wing face each other. In the open position, it is then sufficient that the laterally closing flap wing engages under the horizontally closing flap wing and holds it in this position. If the vertically closing flap wing is released by the fusible link, it falls under the pressure of the flap wing lying on it in the closed position, the same thing happens with the horizontally closing flap wing.
  • the horizontally closing flap presses the vertically closing flap against the inside wall of the housing and holds it there with its front edge. It is no longer possible to arch this vertically closing flap wing. For this reason, the horizontally closing flap wing is particularly heavy due to the above. Metal plate and the insulating plate formed.
  • the last-mentioned flap wing engages with its metal plate in the air outlet opening, which is formed by a refractory ring.
  • This refractory ring reduces the outlet diameter, so that an area is formed within the fire protection box, which the insulating plate resting on the metal plate can overlap. This ensures a very good seal to the room.
  • a fire protection box R has a housing 2 with a connecting piece 1 to an air duct system (not shown in more detail) and with an outlet piece 3 for a ceiling outlet, swirl outlet or another outlet.
  • the connecting piece 1 can have different shapes, either round, oval or angular, and is permanently connected to the housing 2 by means of corresponding bevels 4.
  • a flap wing 5 in the housing, which is attached above the connection piece 1 with a hinge (not shown in more detail) and which can consist of a metal plate or another non-combustible material.
  • a swivel bolt 7 is provided on a cover 6 of the housing 2 above the air inlet opening 36. The determination is made via a connecting bracket 9, on which the swivel bolt 7 is rotatably attached about an axis 8.
  • the swivel bolt 7 has the shape of an angle, two legs 10 and 11 (see Figure 2) are formed.
  • the pivot bolt 7 In the position of use, that is, when the flap wing 5 is open, the pivot bolt 7 is held in the position shown by a leaf spring 12 and in such a way that the leg 10 of the pivot bolt 7 both with its upper edge 13 and with its end face 14 Bolt 15 and 16 of fuse 34 and 35 strikes.
  • flap wing 5 In this position, a rail 21 fixed on the flap wing 5 engages in a groove 22 of the other leg 11, as a result of which the flap wing 5 is held in the open position.
  • a further flap wing 20 lies on the flap wing 5.
  • This flap wing 20 consists of a compact metal sheet 23 which is insulated from the interior of the housing 2 by insulating plates 24 or mats made of a non-combustible material.
  • the flap wing 20 is mounted in a hinge 25, which is located above a circumferential flange 26 of the housing 2.
  • the flange 26 is created by appropriately folding the housing 2.
  • the outlet nozzle 3 which also has a flange 27 formed by corresponding bevels and encircling it, is fastened by means of screws 28, rivets or other fastening elements.
  • a heat-resistant ring 29 is inserted between the circumferential flanges 26 and 27, which reduces the cross section of an air outlet opening 30 accordingly.
  • FIG. 3 An example of a fusible link fuse 34 or 35 is shown enlarged in FIG. 3. It can be seen that the bolt 15 or 16 is slidably guided in a holder 37, the holder 37 extending from a connecting plate 38 to the housing 2, a strip 39, approximately perpendicular to the connecting plate 38, and a strip 10, again approximately running parallel to the connecting plate 38, there is. The bolt 15 or 16 passes through the strip 40 and the connecting plate 38 in corresponding guide bores.
  • a clamping ring 41 is pushed onto the bolt 15 or 16 between the connecting plate 38 and the strip 40, against which a pressure plate 42 strikes. Between the pressure plate 42 and the strip 40 surrounds the bolt 15 or 16, a coil spring 43. Under the pressure of the coil spring 43, the bolt 15 or 16 would be displaced in the direction x if the coil spring 43 were not preloaded by a solder 44.
  • This fusible link 44 is located between two metal platelets 45 and 46, the metal platelet 45 being suspended in the strip 40 and the metal platelet 46 in the pressure plate 42.
  • the fusible link 44 If the fusible link 44 is exposed to a temperature of 72 ° or above, as is possible in the event of a fire, it melts and thus releases the connection between the two metal plates 45 and 46.
  • the spring 43 is also released, pressing the pressure plate 42 in the direction x and taking the bolt 15 or 16 with it via the clamping ring 41. These meet the upper edge 13 or end face 14 of the leg 10 of the pivot bolt 7, so that the pivot bolt 7 rotates about the axis 8.
  • the rail 21 slides out of the groove 22 on the flap wing 5 and releases the flap wing 5, which now falls in the y direction around the hinge (not shown in more detail) and closes the air inlet opening 36. So that the connection piece 1 is closed.
  • the metal plate 23 of the flap wing 20 is folded so that it engages exactly in the reduced cross section of the air outlet opening 30, while the insulating plate 24 overlaps the air outlet opening 30, i.e. overlaps the heat-resistant ring 29 located between the flanges 26, 27 in the edge regions.
  • the flap wing 5 is pressed by an end edge 33 of the flap wing 20 in addition to the inner wall of the housing 2 in front of the mouth of the connecting piece 1, whereby the closed position is improved.
  • this device closes both the connecting piece 1 through the flap wing 5 and the outlet port 3 through the flap wing 20.
  • the two flap wings 5 and 20 are coupled to one another and close at the same time.
  • the flap 5 prevents a fire, which may have arisen in the air control system, from spreading into the housing 2.
  • the flap wing 20 prevents the fire from spreading through the outlet nozzle 3 into a room.
  • the fusible link fuse 35 which is located within the connection piece 1, reacts to a fire within the air guidance system.
  • the fusible link fuse 34 is provided for a reaction to a fire outside the fire protection box R, so that in this case too, the flap wings 5 and 20 close and the fire in a room is not given any food by fresh air supply.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air-Flow Control Members (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Connection Or Junction Boxes (AREA)
  • Refrigerator Housings (AREA)
  • Distribution Board (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP91102689A 1990-03-09 1991-02-23 Caisse de protection contre l'incendie Expired - Lifetime EP0445613B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9002778U DE9002778U1 (de) 1990-03-09 1990-03-09 Brandschutzkasten
DE9002778U 1990-03-09

Publications (2)

Publication Number Publication Date
EP0445613A1 true EP0445613A1 (fr) 1991-09-11
EP0445613B1 EP0445613B1 (fr) 1994-09-14

Family

ID=6851797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102689A Expired - Lifetime EP0445613B1 (fr) 1990-03-09 1991-02-23 Caisse de protection contre l'incendie

Country Status (4)

Country Link
EP (1) EP0445613B1 (fr)
AT (1) ATE111368T1 (fr)
DE (2) DE9002778U1 (fr)
ES (1) ES2063988T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741271A1 (fr) * 1995-11-17 1997-05-23 Constantin Pierre Clapet coupe-feu
CN104474647A (zh) * 2014-11-26 2015-04-01 宁波大地化工环保有限公司 一种料坑防火装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29511265U1 (de) * 1995-07-12 1995-09-21 Bartholomäus, Gert, 89607 Emerkingen Brandschutzeinrichtung zur Abschottung einer Lüftungsrohrleitung
ES2304840B1 (es) * 2006-03-06 2010-01-05 Talleres Bou S.L. Sala de almacenamiento.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2082387A5 (fr) * 1970-03-13 1971-12-10 Etu Rech Ventil Aerau
US3643582A (en) * 1969-06-06 1972-02-22 Daito Seisakusho Safety mechanism for a flow conduit damper
FR2178713A5 (fr) * 1972-03-29 1973-11-09 Trox Gmbh Geb
DE2335393A1 (de) * 1973-07-12 1975-01-30 Schako Metallwarenfabrik Feuerschutzanordnung fuer lufttechnische anlagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643582A (en) * 1969-06-06 1972-02-22 Daito Seisakusho Safety mechanism for a flow conduit damper
FR2082387A5 (fr) * 1970-03-13 1971-12-10 Etu Rech Ventil Aerau
FR2178713A5 (fr) * 1972-03-29 1973-11-09 Trox Gmbh Geb
DE2335393A1 (de) * 1973-07-12 1975-01-30 Schako Metallwarenfabrik Feuerschutzanordnung fuer lufttechnische anlagen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741271A1 (fr) * 1995-11-17 1997-05-23 Constantin Pierre Clapet coupe-feu
CN104474647A (zh) * 2014-11-26 2015-04-01 宁波大地化工环保有限公司 一种料坑防火装置

Also Published As

Publication number Publication date
DE9002778U1 (de) 1990-06-28
ES2063988T3 (es) 1995-01-16
ATE111368T1 (de) 1994-09-15
EP0445613B1 (fr) 1994-09-14
DE59102885D1 (de) 1994-10-27

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