JPH0737630Y2 - Smoke vent opening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for opening a smoke exhaust port in a smoke exhaust device for forcibly exhausting smoke generated by a fire in a building.

(Prior Art) As a conventional device for opening a smoke exhaust port of this type of smoke exhaust device, as shown in FIG. 6, a smoke exhaust port (c) provided on an inner wall (b) of a flue (a) of a building. ) Is a protruding L-shaped smoke exhaust door in which the smoke exhaust door (d) is rotatably mounted on the indoor side about the upper horizontal axis, and the smoke exhaust door is attached to the smoke exhaust port (c) as shown in FIG. An outfall type smoke exhaust door having a lower end edge of (d) rotatably mounted in the room, a smoke exhaust port (c) side frame (e) as shown in FIG.
A sliding type smoke exhaust door whose upper end is vertically slidably mounted on the rail (f) arranged at the smoke exhaust port (c) as shown in FIGS. 9 and 11 in the lateral direction. A sliding door type smoke exhaust door in which the smoke exhaust door (d) is movably mounted, as shown in FIG. A revolving type smoke exhaust door (d) is proposed that is pivotally supported by the.

(Problems to be Solved by the Invention) In the conventional smoke exhaust opening device, it is difficult to secure an opening ratio of the smoke exhaust at 100%. There are some cases where the hooks that lock the door to the smoke exhaust opening are removed to open the smoke exhaust opening by its own weight, but in order to ensure the opening function of the smoke exhaust door, a spring or pressure damper is used. To complicate the structure.

Further, there is a problem in maintaining airtightness such as the hinge mounting portion around the smoke exhaust port and the wall surface of the sliding door.

The present invention has been proposed in view of the above problems of the prior art, and provides a smoke exhaust opening device having a simple smoke exhaust door opening mechanism, a large opening ratio, and high airtightness. There is a point to do.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a smoke exhaust opening device according to the present invention is a smoke exhaust device for forcibly exhausting smoke generated by a fire of a building. An inclined guide rail that extends into the flue and is inclined downward toward the inside of the room is attached to the lower portion of the smoke exhaust port that is opened on the inner wall surface of the passage,
On the flue side of the lower part of the smoke exhaust door arranged at the smoke exhaust port, the slant guide rail is slidably fitted and is inserted from the lower end of the smoke exhaust door to have a similar cross-section to the slope guide rail. It is configured by protruding slide rails.

According to the invention of claim 2, the smoke exhaust door is configured so that the smoke exhaust door is locked and unlocked at the smoke exhaust port by interlocking with a smoke sensor. We have devised a device to open the smoke exhaust port by disposing an electromagnetic ratchet.

(Operation) Since the present invention is configured as described above, when a fire occurs, the smoke exhaust door, which closes the smoke exhaust opening on the inner wall surface of the flue, is attached to the lower part of the smoke exhaust opening. And an inclined guide rail that extends into the flue and inclines downward toward the inside of the room, and extends toward the flue from a lower portion of the smoke exhaust door and slidably fits into the inclined guide rail. The slanted guide rail and the slide rail having a similar cross-section are guided to slide toward the inside of the room in parallel by their own weight, and the opening is completely opened.

According to the second aspect of the present invention, when a fire occurs, a smoke detector senses smoke and activates the electromagnetic ratchet that works with the detector to release the lock on the smoke outlet of the smoke exhaust door, The smoke door is slid out from the opening by its own weight, and the opening is opened.

(Embodiment) The present invention will be described below with reference to the illustrated embodiment.

(1) is a flue, and (2) is a flue gas outlet opened in the inner wall (3) of the flue.

On both sides of the lower part of the smoke outlet (2), extending into the flue (1),
In addition, it is inclined toward the inside of the room with a tilt angle θ. An inclined guide rail (4) having a mold section is provided.

(5) is a vertical smoke exhaust door disposed at the smoke exhaust port (2), and slidably fitted into the inclined guide rail (4) from the lower end of the door (5). A slide rail (6) having a cross section similar to that of the guide rail (4) is provided in a protruding manner.
In the figure, (7) is a wheel mounted on the slide rail (6) and rolling along the guide rail (4), and (8) is a smoke exhaust door (5) and a slide rail (6). A stay to be connected, (9) is a door frame, and (10) is a packing around the smoke outlet (2).

Further, an electromagnetic chilleret (11) interlocking with a smoke detector (not shown) is mounted on the smoke exhaust port (2), and the smoke exhaust door (5) is normally locked to the smoke exhaust port (2). When a fire occurs, a smoke detector detects smoke and operates the electromagnetic ratchet (11) to unlock the smoke exhaust door (5).

Since the illustrated embodiment is configured as described above, when a fire occurs, the smoke detection signal of the smoke detector releases the lock of the smoke exhaust door (5) by the electromagnetic ratchet (11),
The smoke exhaust door (5) slides toward the inside of the room in an upright state by its own weight using the guide rail (4) and the slide rail (6) as a guide to completely open the smoke exhaust port (2), Smoke is discharged to the outside of the building from the wind passage (1) through the smoke exhaust port (2).

The guide rail (4) has a slide rail (6).
Is provided, and the smoke exhaust door (5) is configured to stop at a position of a predetermined protrusion length W from the smoke exhaust port (2) when it does not slip.

Also, in the test operation, when the smoke exhaust door (5) that has slid out to the indoor side is returned to its original position, if the smoke exhaust door (5) is manually pushed into the smoke path side, the electromagnetic ratchet (11) The smoke exhaust door (5) is locked at the smoke exhaust port (2).

(Effects of the Invention) According to the present invention, as described above, the slope that is attached to the lower part of the smoke exhaust port that is opened on the inner wall surface of the flue and that extends into the flue and that is inclined downward toward the inside of the room By slidingly slidingly inserting a slide rail projecting from the lower part of the smoke exhaust door arranged at the smoke exhaust port to the flue side on the guide rail, the smoke exhaust door is guided by the guide rail by its own weight. The rails and slide rails are automatically guided to the indoor side to open the smoke exhaust port, and it is not necessary to provide a smoke exhaust door operating member such as a spring or a damper as the smoke exhaust door opening mechanism. , The structure can be simplified and reliable operation can be guaranteed, and the effective opening ratio of the smoke exhaust port can be secured at 100%. Therefore, the opening area of the smoke exhaust port can be reduced and the number of installation locations can be reduced. Furthermore, since the structure of the smoke exhaust port is simplified, the airtight device is simple, the manufacturing cost is reduced as a whole, the maintenance cost is low, and it is extremely economical.

According to a second aspect of the present invention, an electromagnetic ratchet for locking the smoke exhaust door, which is configured to lock and release the smoke exhaust door at the smoke exhaust opening in conjunction with the smoke detector, is provided at the smoke exhaust opening. Thus, when a fire occurs, the smoke exhaust door can be automatically operated to open the smoke exhaust port.

[Brief description of drawings]

FIG. 1 is a longitudinal side view showing an embodiment of a smoke exhaust opening device according to the present invention. FIG. 2 is a sectional view taken along the line II of FIG. 2, and FIG. 2 is a transverse plan view thereof. View II-II, FIG. 3 is a front view of the smoke exhaust port portion, and FIGS. 4 and 5 are side views showing the relationship between the inclined guide rail and the slide rail, respectively, and a longitudinal sectional view and FIG. 10 to 10 are vertical side views showing respective examples of conventional smoke exhaust opening devices, and FIG. 11 is a front view of FIG. (1) …… Flue, (2) …… Smoke outlet, (3) …… Inner wall,
(4) …… Inclined guide rail, (6) …… Slide rail, (11) …… Electromagnetic ratchet.

Claims (2)

[Scope of utility model registration request] 1. A smoke exhaust device for forcibly exhausting smoke generated by a fire in a building, which extends into the flue at a lower part of a smoke exhaust opening formed in an inner wall surface of the flue of the building and has an indoor side. An inclined guide rail that inclines downward is attached, and the inclined guide rail is slidably fitted to the lower part of the smoke exhaust door arranged at the smoke outlet and closer to the flue side, and the smoke is exhausted. A device for opening a smoke outlet, comprising a slide rail projecting from the lower end of the door and having a cross-section similar to that of the inclined guide rail. 2. A smoke exhaust door locking electromagnetic ratchet configured to lock and unlock the smoke exhaust door at the smoke exhaust port in association with a smoke detector. The smoke exhaust opening device according to claim 1, which is provided.