FR3094077A1 - Smoke evacuation damper with gate and evacuation system comprising such a damper - Google Patents

Abstract

The invention relates to a door smoke control damper and an evacuation system comprising such a damper. The invention relates to a door smoke control damper (1) and an evacuation system comprising such a damper (1). The shutter (1) comprises a leaf (3), mounted in a frame (2), which can pivot about a pivot axis (A) and a reset motor (4), provided at the leaf (3), for driving connecting means (6A, 6B, 8A, 8B) between the leaf (3) and the frame (2) in order to move the leaf (3) from its open position to its closed position, said connecting means (6A , 6B, 8A, 8B) comprising first and second connecting means (6A, 6B, 8A, 8B) which are partly (6a, 6B) located between the motor (4) and edges (B1, B2) of the leaf (3) corresponding opposites and partly (8A, 8B) between these edges (B1, B2) and the frame (2), said edges (B1, B2) extending perpendicular to the pivot axis (A). The shutter (1) and the system according to the invention are particularly intended for mechanical smoke extraction from buildings in order to facilitate the evacuation of people. Figure for the abstract: Fig. 1

Description

Smoke extraction damper with gate and evacuation system comprising such a damper

The present invention relates to a smoke extraction damper with gate and an evacuation system comprising such a damper.

• un cadre pour installer le volet dans un conduit de désenfumage;
• au moins un vantail, qui est monté dans le cadre, pivotable autour d’un axe de pivotement entre une position fermée et une position ouverte;
• des moyens de liaison entre le vantail et le cadre; et
• un moteur de réarmement, qui est prévu au vantail, pour entraîner les moyens de liaison afin de déplacer le vantail de sa position ouverte dans sa position fermée.

The component includes:

• a frame for installing the damper in a smoke extraction duct;
• at least one leaf, which is mounted in the frame, pivotable about a pivot axis between a closed position and an open position;
• connecting means between the leaf and the frame; and
• a reset motor, which is provided on the leaf, to drive the connecting means in order to move the leaf from its open position to its closed position.

Typically, such a shutter has an essentially rectangular section and the frames of such a shutter typically delimit a rectangular opening.

Passdoor smoke control dampers are normally part of a smoke and heat exhaust system. The shutters are normally mounted in a smoke extraction duct. These evacuation systems are mainly intended for the mechanical smoke extraction of buildings in order to facilitate the evacuation of people.

A smoke control damper of this type is normally closed and fire resistant when in the closed position. The shutter is only opened in the event of a fire so as to allow controlled evacuation of smoke. The shutter then opens in the smoke extraction duct. In the event of a fire, a control system only opens the shutters necessary to ensure smoke evacuation. The other shutters, which cannot contribute to the desired evacuation, remain closed and must then resist the fire.

During an incident, a test or maintenance, the leaf can be returned manually or, in certain embodiments, automatically from its open position to its closed position. In order to carry out a remote reset, these latter embodiments include a reset motor. Certain embodiments of smoke extraction shutters with gate that the applicant of the present patent application markets under the name Avantage are motorized in this way. Other embodiments of such a smoke extraction shutter are for example described in document EP 2 320 153 B1.

There is currently a trend to make such shutters in a more aesthetic way, without a covering grid, in which the outer face is made of a plate that allows a decorative finish to be applied in harmony with the adjacent wall. Such flaps are for example marketed by the applicant of the present application under the name of Kamouflage and are described in the documents EP 2 450 642 B1, EP 2 537 562 B1 and EP 2 537 563 B1.

It is desirable that such aesthetic shutters can also be rearmed remotely. However, current motorized systems are not applicable in these aesthetic shutters.

• des premiers moyens de liaison qui sont en partie situés entre le moteur et un premier bord du vantail et en partie entre ce premier bord et le cadre, le premier bord s’étendant perpendiculairement à l’axe de pivotement; et
• des seconds moyens de liaison qui sont en partie situés entre le moteur et un second bord du vantail, opposé au premier bord, et en partie entre ce second bord et le cadre.

The device according to the invention overcomes this drawback. According to a first characteristic, said means for connecting a shutter according to the invention comprise:

• first connecting means which are partly located between the motor and a first edge of the leaf and partly between this first edge and the frame, the first edge extending perpendicularly to the pivot axis; and
• second connecting means which are partly located between the motor and a second edge of the leaf, opposite the first edge, and partly between this second edge and the frame.

A motor of a smoke extraction damper concerned by the invention is preferably not arranged along the edges of such a damper in order to avoid an asymmetrical load on the leaf and to avoid obstacles in the duct in which the shutter is installed. With the new connection means according to the invention, it is now possible to position the motor at the leaf level without these means interfering with an aesthetic realization of the shutter. The first connecting means can easily be integrated into the leaf, while the second connecting means can easily be arranged along the corresponding edges of the leaf, so that they impede the passage as little as possible. In this way, a symmetrical loading of the leaf is also possible.

According to a particular embodiment, the motor is mounted between two parallel plates of the leaf, and the part of the connecting means, extending between the said edges of the leaf, extends between these two plates.

According to a robust embodiment of the invention, the motor is provided to generate a movement of a drive shaft which extends between the first edge and the second edge and which constitutes the part of the connecting means extending between the edges of the leaf.

In such an embodiment provided with a drive shaft, the motor is preferably provided to generate a rotational movement of an output shaft of the motor and the shutter comprises transmission means for transmitting the rotational movement of the output shaft into a rotational movement of the drive shaft. More specifically, these transmission means can be provided in the form of a gear.

According to a more specific embodiment, the parts of the connecting means extending between the said edges of the leaf and the frame are constituted as a drive arm or a plurality of drive arms mounted in an articulated manner with each other .

In the case of a plurality of drive arms mounted in an articulated manner with each other, it is possible to optimize the torque stroke so as to obtain a higher torque in the closed position of the leaf than in the open position. of the leaf.

Such drive arms or sets of drive arms are preferably fixedly connected to said drive shaft by a first end and are preferably slidably mounted in corresponding slots provided in the frame by a second end.

Instead of providing such drive shaft and drive arm, the connecting means can for example comprise a return cable and a winding drum which can be provided on the output shaft of the motor to receive this cable. . Other solutions are possible.

According to a preferred form of the invention, the shutter comprises a spring which acts on the leaf to move the leaf into its open position.

In such a form, the spring is preferably a coil spring which is positioned around said drive shaft, which is fixedly connected to the leaf by a first end and which is fixedly connected to the drive shaft by a second end. There is more space around the drive axis to use a spring that has a more constant torsion moment, so that the torsion moment does not vary much in the different leaf positions.

In a specific variant of the invention, the shutter comprises an electronically controlled locking mechanism, which is mounted on the leaf. Such electronically controlled locking mechanisms are for example described in documents EP 2 537 562 B1 and EP 2 695 426 A1. In an advantageous embodiment of the invention, the shutter comprises a mechanism for resetting the locking mechanism depending on the position of the leaf to reset the locking mechanism when the leaf is placed in its open position. Preferably, this mechanism for resetting the locking mechanism then comprises a rod between the locking mechanism and said drive shaft, the rod being pivotally mounted on a disc which is fixedly mounted on the drive shaft. Alternatively, but less advantageously, this rod could for example be fixed to the frame instead of being fixed to a disc of this type mounted on the drive shaft.

Said drawbacks of the state of the art are also solved by providing an evacuation system intended for the mechanical smoke extraction of a building, comprising a smoke extraction damper with gate according to the invention, as described above.

The accompanying drawings illustrate the invention:

shows in perspective a shutter according to the invention in a position between its open position and its closed position, with part of the leaf omitted.

depicts in perspective the pane shown in Figure 1, with part of the frame omitted.

shows in perspective in more detail a part of the flap shown in Figure 2 at the height of the upper drive arm of the connecting means.

shows in perspective in more detail a part of the flap shown in Figure 2 at the height of the lower drive arm of the connecting means.

shows in perspective a lower part of the shutter shown in the previous figures, locked and in its closed position with part of the leaf and part of the frame omitted.

shows in perspective the part of the flap shown in Figure 5, the flap being unlocked.

shows in perspective the part of the flap shown in Figure 5, the flap being in a position between its open position and its closed position.

shows in perspective the part of the flap shown in Figure 5, the flap being in its open position.

The figures show a smoke extraction shutter (1) with gate to be installed on a wall or on the ceiling, in a smoke extraction duct.

The flap (1) has an essentially rectangular section. It comprises a frame (2) for installing the shutter (1) in said duct. This frame (2) can be constructed in known manner.

A leaf (3) is mounted in this frame (2) which can pivot about a pivot axis (A), between a closed position, as shown in Figures 5 and 6, in which the duct is closed, and an open position, as shown in Figure 8, in which the conduit is open. The flap (1) is normally closed. When in this closed position, the shutter (1) resists fire. In the event of a fire, the shutter (1) can be opened in the smoke extraction duct so that it does not constitute an obstacle in the areas through which people must be evacuated.

A shutter (1) can comprise a single leaf (3), as illustrated, but can also comprise several leaves.

In the figures, the pivot axis (A) extends substantially vertically, but could also extend horizontally or at an angle.

To make the sash (3) pivotable, it can be hung using hinges in this frame or, as shown, using pivot hinges.

The leaf (3) illustrated comprises a first plate (5A) of refractory material, which extends essentially over the entire surface of the leaf (3). A second plate (5B) made of refractory material of the leaf (3) is positioned at a certain distance from the first plate (5A) and parallel to this first plate (5A). This second plate (5B) also extends essentially over the entire surface of the leaf (3).

The sash (3) additionally comprises profiles (14), which essentially extend over the edges (B3, B4) running parallel to the pivot axis (A). These profiles (14) are positioned essentially between said plates (5A, 5B), such that the plates (5A, 5B) and the profiles (14) define an interior void in the leaf (3). In the middle, a crosspiece, which is not shown, is mounted between the profiles (14).

To open the shutter (1), the latter is provided with a spring (10) which acts on the leaf (3) to move the leaf (3) into its open position. To close the shutter (1), the latter is fitted with a reset motor (4). The sash (3) can be operated remotely using a locking mechanism (11). The flap (1) can also be operated manually.

The motor (4) is mounted on the crosspiece not shown, between the two plates (5A, 5B) of the leaf (3). The motor (4) is provided to generate a rotational movement of an output shaft of the motor (4). A gear (7) is provided for transmitting rotational motion of the output shaft into rotational motion of a drive shaft (6a, 6b). This gear (7) is provided with automatic clutch means for coupling or uncoupling, so that if the motor (4) is not rotating, the leaf (3) can be moved freely.

The drive axis (6A, 6B) extends between the opposite edges (B1, B2) of the leaf (3) which extend perpendicular to the pivot axis (A). It is pivotally mounted on two corresponding fixing bodies (15), which are fixed to the first leaf plate (3). The drive axis (6A, 6B) extends essentially parallel to the pivot axis (A) and has an essentially square section. A first part of this drive shaft (6A, 6B) extends between the motor (4) and a first edge (B1) of the leaf (3) and a second part between the motor (4) and a second edge ( B2) of the leaf (3).

At said edges (B1, B2) of the leaf (3), drive arms (8A, 8B) are fixedly connected to the drive shaft (6A, 6B) by a first end. At a second end, these drive arms (8A, 8B) are slidably mounted in corresponding notches (9A, 9B) provided in the frame (2).

Said spring (10) for moving the leaf (3) into its open position is a torsion spring (10) which is mounted around the drive shaft (6A, 6B), which is fixedly connected to the leaf (3) by a first end and which is fixedly connected to the drive shaft (6A, 6B) by a second end.

Said electronically controlled locking mechanism is also mounted on the non-illustrated crosspiece, is located between said plates (5A, 5B) and is mainly constructed as described in EP 2 537 563 B1. The locking mechanism is equipped with a retractable bolt (19), which is spring-loaded in its locking position, to close the shutter (1). It comprises a fixed electric coil (16), which is electrically powered. In the locked position, a counter-plate (17) of ferromagnetic material is pressed against the coil (16). When the coil (16) is actuated, the counter plate (17) is released, the retractable bolt (19) is withdrawn and the shutter (1) is unlocked. The retractable bolt (19) can also be operated manually by turning the key (20) in the keyhole (23).

To reset the locking mechanism (11), in the illustrated embodiment, the counter-plate (17) is then fixed to an additional lever (18). A rod (12) is slidably mounted on said additional lever (18) of the locking mechanism (11) at one end and is pivotally mounted on a disc (13) at another end. This disc (13) is fixedly mounted on the drive shaft (6A, 6B). An element (21) is spring-loaded (22) on the first end of this rod (12) to drive the additional lever (18) of the locking mechanism (11) in order to reset this mechanism (11). Alternatively, the mechanism (11) can always be reset manually, as described in document EP 2 537 563 B1.

In the standby position, as shown in Figure 5, the leaf (3) is in its closed position and the locking mechanism (11) is locked. Counter plate (17) is pressed against coil (16) and bolt (19) holds leaf (3) in its closed position.

• les bras d'entraînement (8A, 8B) des moyens de liaison (6A, 6B, 8A, 8B) entre le moteur (4) et le cadre (2) sont guidés dans les encoches (9A, 9B) comme cela est illustré dans les Figures 6 à 8.
• et le tige (12) de moyens de réarmement du mécanisme de verrouillage (11) est entraîné par le disque (13) sur l’axe d'entraînement, entraîne l’élément (21), monté à ressort (22) pour enfin entraîner le levier (18) supplémentaire du mécanisme de verrouillage (11) dans le but de réarmer ce mécanisme (11) dans la position ouverte du vantail (3), comme cela est illustré dans la Figure 8.

In case of fire, or to control the shutter (1), the locking mechanism (11) can be unlocked by controlling the coil (16), thus releasing the counter plate (17), as shown in Figure 6. In this way, the spring (10) pushes the leaf (3) into its open position, as shown in Figures 7 and 8. During this movement:

• the drive arms (8A, 8B) of the connecting means (6A, 6B, 8A, 8B) between the motor (4) and the frame (2) are guided in the notches (9A, 9B) as shown in Figures 6 to 8.
• and the rod (12) of the resetting means of the locking mechanism (11) is driven by the disc (13) on the drive shaft, drives the element (21), spring-mounted (22) to finally drive the additional lever (18) of the locking mechanism (11) in order to reset this mechanism (11) in the open position of the leaf (3), as shown in Figure 8.

If the reset motor is then energized, the connecting means (6A, 6B, 8A, 8B) drive the leaf (3) until the leaf (3) arrives in its closed position, as shown in Figure 6. The drive arms (8A, 8B) of the connecting means (6A, 6B, 8A, 8B) between the motor (4) and the frame (2) are then guided in the notches (9A, 9B ) reverse.

According to a variant not shown, the connecting means may comprise a return cable and a winding drum may be provided on the output shaft of the motor to receive this cable.

The device according to the invention is particularly intended for the mechanical smoke extraction of buildings with the aim of facilitating the evacuation of people.

Claims (10)

Smoke extraction damper (1) with wicket door, comprising:

• a frame (2) for installing the shutter (1) in a smoke extraction duct;
• at least one leaf (3), which is mounted in the frame (2), pivotable about a pivot axis (A) between a closed position and an open position;
• connecting means (6A, 6B, 8A, 8B) between the leaf (3) and the frame (2);
• a reset motor (4), which is provided on the leaf (3), to drive the connecting means (6A, 6B, 8A, 8B) in order to move the leaf (3) from its open position to its closed position;

characterized in that said connecting means (6A, 6B, 8A, 8B) comprise:

• first connecting means (6A, 8A) which are partly (6A) located between the motor (4) and a first edge (B1) of the leaf (3), and partly (8A) between this first edge (B1) and the frame (2), the first edge extending perpendicular to the pivot axis (A); and
• second connecting means (6B, 8B) which are partly (6B) located between the motor (4) and a second edge (B2) of the leaf (3), opposite the first edge (B1), and partly (8B) ) between this second edge (B2) and the frame (2).

Shutter (1) according to claim 1, characterized in that the motor (4) is mounted between two parallel plates (5A, 5B) of the leaf (3) and that the part (6A, 6B) of the connecting means (6A, 6B, 8A, 8B) extending between said edges (B1, B2) of the leaf (3), extends between these two plates (5A, 5B). Shutter (1) according to claim 1 or claim 2, characterized in that the motor (4) is provided to generate movement of a drive shaft (6A, 6B) which extends between the first edge (B1 ) and the second edge (B2) and which constitutes the part (6A, 6B) of the connecting means (6A, 6B, 8A, 8B) extending between the edges (B1, B2) of the leaf (3). Shutter (1) according to claim 3, characterized in that the parts (8A, 8B) of the connecting means (6A, 6B, 8A, 8B) extending between said edges (B1, B2) of the leaf (3) and the frame (2) are constructed as drive arms (8A, 8B) or a set of drive arms hingedly mounted with each other. Shutter (1) according to claim 4, characterized in that the drive arms (8A, 8B) or the sets of drive arms are fixedly connected to the drive shaft (6A, 6B) by a first end and are slidably mounted in corresponding notches (9A, 9B), provided in the frame (2), by a second end. Shutter (1) according to any one of the preceding claims, characterized in that the shutter (1) comprises a spring (10) which acts on the leaf (3) to move the leaf (3) into its open position. Shutter (1) according to claim 6 and according to any one of claims 3 to 5 characterized in that the spring (10) is a helical spring (10) which is positioned around the drive axis (6A, 6B ), which is fixedly connected to the leaf (3) by a first end and which is fixedly connected to the drive shaft (6A, 6B) by a second end. Shutter (1) according to any one of the preceding claims, characterized in that the shutter (1) comprises an electronically controlled locking mechanism (11), which is mounted on the leaf (3) and which comprises a reset mechanism. locking mechanism (11) when the leaf (3) is placed in its open position. Shutter (1) according to claims 3 and 8 characterized in that the reset mechanism of the locking mechanism (11) comprises a rod (12) between the locking mechanism (11) and the drive shaft (6A, 6B ), the rod (12) being pivotally mounted on a disc (13) which is fixedly mounted on the drive shaft (6A, 6B). Evacuation system for mechanical smoke extraction from a building, comprising a shutter (1) for smoke extraction with a wicket, characterized in that the shutter (1) is a shutter (1) according to any one of the preceding claims.