JP2011239834A - Mechanical smoke exhaustion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the property of preventing spread of smoke to a non-fire area while securing an indoor design property.SOLUTION: The mechanical smoke exhaustion equipment includes: a smoke protection barrier 3 which is rotatably supported by a smokeproof section wall 22 of a ceiling 2 and is movable from a horizontal position to a hanging wall forming position P1 by being rotated downwards with the first rotation support part 30 as the center; and an inclined wall 4 which is arranged adjacently to the smoke protection barrier 3 at the horizontal position, is rotatably supported so as to position a free end 4a facing the smoke protection barrier 3 at the oblique upper part, and is movable from the horizontal position to an inclined position P2 by being rotated upwards with the second rotation support part 40 as the center.

Description

  The present invention relates to a mechanical smoke exhausting equipment having a smoke-proof hanging wall.

  Conventionally, in the event of a fire occurring in a building, exhausting smoke in a fire room has been a necessary measure for ensuring evacuation safety in the early stages of a fire. For that purpose, it is necessary to prevent the smoke generated during a fire from dropping in the room and to prevent the smoke from spreading from the fire area to the non-fire area. In order to prevent the spread of such smoke, a smoke-proof hanging wall with a depth of about 50 cm formed by a non-combustible material is fixed to the ceiling surface so that the smoke does not spread beyond a predetermined range, and a smoke-proof section is formed. It is common to smoke in this smoke-proof section.

By the way, in a space with a large room area such as an office building that has become larger in recent years, there is a demand for a flat ceiling surface because of the demand for a clean room space, especially from the viewpoint of design and everyday usability. .
And in order to respond | correspond to this, there exists another form of smoke-proof hanging wall which is not the smoke-proof hanging wall provided in the fixed state on the ceiling. That is, for example, Patent Documents 1 to 3 disclose smoke-proof hanging walls that are stored in the ceiling in daily life and formed so as to hang down from the ceiling in the event of a fire.

In Patent Document 1, a hanging wall is wound and stored in a winding device provided on a ceiling, and the hanging wall is drawn out in the event of a fire so that an evacuation opening with a predetermined height remains between the floor and the floor surface. A vertically movable smoke-proof wall is proposed.
Patent Documents 2 and 3 disclose smoke-proof hanging walls that are horizontally stored in a ceiling portion and rotated downward to form a smoke-proof hanging wall when a fire occurs.

JP-A-8-84781 Japanese Utility Model Publication No. 6-58960 JP-A-6-70992

However, the conventional smoke barriers have the following problems.
That is, in the vertically movable smoke-proof hanging wall shown in Patent Document 1, it is difficult to secure the space for the accommodation portion of the winding device in the ceiling, and the entrance / exit portion of the smoke-proof hanging wall is connected to the surrounding ceiling portion. Since it has a different special structure and is conspicuous in design, it has a drawback that it is difficult to apply to conspicuous space particularly in office buildings.
In addition, in the rotary smoke-proof hanging wall as shown in Patent Documents 2 and 3, smoke falls after the smoke collides with the smoke-proof hanging wall, passes over the smoke-proof hanging wall, and smokes into the non-fire area. Since there is a risk of the spread of smoke, there is a problem that the conventional smoke-proof hanging wall does not function sufficiently for the purpose of preventing the spread of smoke.
Thus, there is a need for a smoke-proof wall that can achieve a good balance between the design of the room and the ability to prevent the spread of smoke with a simple structure, and there is room for improvement in that respect.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a mechanical smoke exhausting facility capable of improving the prevention of smoke expansion to a non-fire area while ensuring indoor design. To do.

  In order to achieve the above object, in the mechanical smoke exhausting equipment according to the present invention, the mechanical smoke exhausting equipment is provided on the ceiling having a ceiling chamber and eliminates the smoke of fire generated in the indoor space which is smoke-proofed, A smoke-proof hanging wall that is rotatably supported by the smoke-proof section of the ceiling and that is rotated downward about the first rotation support portion to move from a horizontal position to a hanging wall forming position; It is arranged adjacent to the smoke-proof hanging wall at the position, and is supported rotatably so that the free end facing the smoke-proof hanging wall is located obliquely upward, and upwards with the second rotation support portion as the center And an inclined wall that can be rotated to move from the horizontal position to the inclined position.

In the present invention, in everyday life, each of the smoke-proof hanging wall and the inclined wall adjacent to each other is arranged in a horizontal position, functions as a normal ceiling, and forms a flat ceiling surface without unevenness. On the other hand, in the event of a fire, the smoke-proof hanging wall supported by the smoke-proof compartment on the ceiling is rotated downward about the first rotation support and placed at the position where the hanging wall is formed. A smoke-proof section composed of a fire area is formed, and an opening is formed in the ceiling on the fire area side. Simultaneously with the rotation of the smoke barrier, the sloped wall on the fire area side is rotated upward about the second rotation support part and placed at the tilted position, so that the smoke from the fire is ceiling along the slope of the sloped wall. A passage guided into the chamber is secured.
In other words, the buoyant smoke is guided upward along the slope of the inclined wall and is drawn into the ceiling chamber, facilitating the inflow of smoke into the opening formed by opening the smoke barrier. become. Therefore, the flow of smoke flowing into the ceiling chamber near the smoke spilling wall is stabilized, and the collision of smoke with the smoke spilling wall is suppressed as in the conventional case. It is possible to prevent the spread of a fire to a non-fire area that exceeds the wall and is smoke-proofed by a smoke-proof hanging wall.

In addition, since the smoke is guided by the inclined wall, it is a structure that does not require an increase in the amount of smoke exhausted from the ceiling chamber, and it only provides rotational drive to the smoke-proof hanging wall and inclined wall. Smoke expansion prevention can be improved with a simple structure.
Therefore, it is possible to secure a safe space (non-fire area) protected from smoke over a long period of time, which is suitable for many architectural uses such as office buildings, merchandise stores, and hospitals.

Moreover, in the mechanical smoke exhausting equipment which concerns on this invention, it is preferable that the pair combination of a smoke-proof hanging wall and an inclined wall is provided for every indoor space by which smoke-proof division was carried out.
In this case, at the time of a fire, the smoke-proof hanging wall and the inclined wall provided in each indoor space partitioned by the smoke-proof section can be rotated to form an opening and a guide passage in each ceiling. In other words, the ceilings on both sides sandwiching the smoke-proof section are provided with openings that connect the indoor space and the ceiling chamber, respectively. Therefore, in the unlikely event that smoke generated in the fire area of a smoke-proof section leaks to the non-fire area through the smoke-proof hanging wall, the smoke that exceeds the smoke is attracted to the opening located on the ceiling of the non-fire area. Therefore, the expansion in the non-fire area can be surely prevented.

Further, in the mechanical smoke exhaust system according to the present invention, the smoke-proof hanging wall may be provided with a plurality of small walls that extend in the vertical direction and are arranged at predetermined intervals in the horizontal direction at the hanging wall forming position. More preferred.
In the present invention, since the smoke-proof dripping wall is arranged at the drooping wall forming position in the event of a fire, a flow path for smoke attracted into the ceiling chamber is secured on the wall surface by a plurality of small walls. Suction is enhanced, and the efficiency of inflowing into the ceiling opening can be improved, whereby the spread of smoke to the non-fire area can be more reliably prevented.

Further, in the mechanical smoke exhaust system according to the present invention, the free end of the smoke-proof hanging wall and the free end of the inclined wall are connected by a connecting wire, and a substantially middle portion of the connecting wire is wound in the ceiling chamber. It may be supported in a state.
In this case, since one end of the connecting wire is pulled downward together with the free end of the smoke-proof hanging wall as the smoke-proof hanging wall rotates, the inclined wall connected by the connecting wire raises the free end to a predetermined inclined position. It will be. Moreover, it is possible to change the inclination angle (inclination position) of an inclined wall by adjusting the length dimension of a connecting wire.

In the mechanical smoke exhaust system according to the present invention, it is preferable that the smoke-proof hanging wall is provided with a rotating wall rotatably supported at the free end.
In the present invention, when the smoke-proof hanging wall is moved to the drooping wall forming position, the rotating wall is rotated downward about the free end of the smoke-proof hanging wall so as to be substantially the same surface as the smoke-proof hanging wall. By setting the direction, it is possible to form a state in which the smoke-proof hanging wall extends downward, thereby improving the effect of preventing the spread of smoke to the non-fire area.

Further, in the mechanical smoke exhausting equipment according to the present invention, the smoke-proof hanging wall may be provided with a slide wall that can protrude outward from the free end along the wall surface direction.
In the present invention, when the smoke proof hanging wall is moved to the hanging wall forming position, the smoke proof hanging wall is lowered by projecting the slide wall outward (downward) from the free end of the smoke proof hanging wall. In this way, it is possible to improve the effect of preventing the spread of smoke to the non-fire area.

  According to the mechanical smoke exhaust system of the present invention, the smoke-proof hanging wall is arranged at the hanging wall forming position in the event of a fire, and the inclined wall is arranged at the inclined position, so that the ceiling formed by opening the smoke-proof hanging wall is arranged. Since not only the opening but also the slope of the inclined wall secures a passage for guiding smoke to the opening, the smoke generated in the fire area can effectively flow into the ceiling chamber, and the smoke to the non-fire area It is possible to improve the expansion preventing property. In addition, the smoke-proof hanging wall and the inclined wall are each of a rotary type, and function as a ceiling by setting each of them to a horizontal position in daily life, so that it is possible to sufficiently ensure the design of the room.

It is the side view which looked at the mechanical smoke exhaustion equipment at the time of everyday life by embodiment of this invention from the side. It is a side view of the state at the time of a fire of the mechanical smoke exhaustion equipment shown in FIG. It is the figure which looked at the ceiling shown in FIG. 1 from the downward direction. It is a principal part enlarged view of the mechanical smoke exhaustion equipment shown in FIG. It is a perspective view which shows a smoke-proof hanging wall. It is a sectional side view for demonstrating the rotation structure of a smoke-proof drooping wall and an inclined wall, Comprising: (a) is a figure which shows an everyday time, (b) is a figure which shows the time of a fire. It is a principal part side view which shows the mechanical smoke exhaustion equipment by the 1st modification of this Embodiment, Comprising: It is a figure corresponding to FIG. It is a principal part side view which shows the mechanical smoke exhaustion equipment by the 2nd modification of this Embodiment, Comprising: It is a figure corresponding to FIG.

Hereinafter, a mechanical smoke exhausting facility according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1 to FIG. 3, the mechanical smoke exhausting equipment 1 according to the present embodiment is for removing fire smoke from the indoor space between the floor and the ceiling 2, and is smoke-proofed. Each ceiling 2 of the indoor space (reference numerals R1 and R2) includes a smoke-proof hanging wall 3 (3A, 3B) and an inclined wall 4 (4A, 4B). The smoke-proof hanging wall 3 and the inclined wall 4 function as a part of the ceiling 2 in daily life, and each wall surface is disposed at a horizontal position P0 on the same plane as the ceiling surface.
Here, in the present embodiment, a building having two living rooms (interior spaces R1, R2) that are smoke-proofed and that is not partitioned by walls is targeted.

  The ceiling 2 is provided with a smoke-proof partition wall 22 (smoke-proof section) that forms a space behind the ceiling (ceiling chamber 21) at the boundary corresponding to the sections of the indoor spaces R1 and R2. That is, the smoke-proof partition wall 22 is provided over the entire length in the transverse direction X of the ceiling 2 (vertical direction toward the paper surface in FIG. 3).

As shown in FIG. 4, the smoke-proof hanging wall 3 is rotatably supported by the lower end 22 a of the smoke-proof partition wall 22 of the ceiling 2, and is rotated downward about the first rotation support portion 30. It can move from the horizontal position P0 (see FIG. 1) to the hanging wall forming position P1. The axial direction of the 1st rotation support part 30 is parallel to the lower end 22a along the length direction (crossing direction X shown in FIG. 3) of the smoke-proof division wall 22. FIG.
As shown in FIG. 5, the smoke-proof hanging wall 3 includes a wall main body 31 and a plurality of small walls 32 provided on one surface (back surface 31 a) of the wall main body 31.

  As shown in FIG. 4, the wall main body 31 is arranged at a horizontal position P0 (see FIG. 1) on the same plane as the ceiling 2 so as to close the opening S provided in the ceiling 2 in daily life. At this time, it is configured to rotate downward (in the direction of arrow E1) and move to the drooping wall forming position P1. Here, the drooping wall forming position P1 is a position perpendicular to the ceiling surface.

  As shown in FIG. 5, the small wall 32 is erected vertically to the back surface 31a of the wall body 31 at the drooping wall forming position P1, extends in the vertical direction, and is disposed at a predetermined interval in the lateral direction (transverse direction X). ing. These small walls 32 increase the suction of smoke to the wall main body 31 and improve the inflow efficiency of the smoke flowing over the smoke-proof hanging wall 3 into the opening S (see FIG. 4). The small wall 32 can have, for example, a height dimension (a length dimension in a direction perpendicular to the back surface 31a) of about 10 cm, and the height dimension and the interval between adjacent small walls 32 and 32 can be adjusted. It is.

The smoke-proof hanging walls 3A and 3B are rotationally driven by a drive motor (not shown), and the drive motor is driven manually or when a fire detector signal is detected.
The fire detector may be a normal smoke detector, which notifies the fire to the fire prevention management room, and moves the drive motor by the operation from the management room to form the smoke prevention wall 3. It is also possible to activate the drive motor based on the signal from the smoke detector to form the smoke-proof hanging wall 3.

  As shown in FIG. 4, the inclined walls 4 </ b> A and 4 </ b> B are arranged adjacent to the smoke-proof hanging wall 3 at the horizontal position P <b> 0 (see FIG. 1), and obliquely above the free end 4 a facing the smoke-proof hanging wall 3. It is supported so that it can be positioned at the position of the second rotation support portion 40, and is rotated upward (in the direction of arrow E2) around the second rotation support portion 40 so as to be movable from the horizontal position P0 to the inclined position P2. That is, the guide passage T is formed by the inclined surface 4b of the inclined wall 4 at the inclined position P2. The guide passage T communicates with the opening S, and forms a passage for guiding smoke caused by fire into the ceiling chamber 21 along the slope 4 b of the inclined wall 4.

The inclined wall 4 is arranged at a horizontal position P0 on the same plane as the ceiling 2 in daily life, and is moved upward (in the direction of arrow E2) to move to the inclined position P2 during a fire. The rotation range of the inclined wall 4 is a range between at least the horizontal position P0 and the inclined position P2 where the inclined surface 4b is at a predetermined inclination angle on the upper side with respect to the ceiling surface.
In addition, the rotation drive of the inclined wall 4 becomes a structure interlock | cooperated with rotation of the smoke-proof hanging wall 3 via the wire 5 (refer FIG. 6) mentioned later.

Moreover, as shown to Fig.6 (a), (b), in this machine smoke exhausting equipment 1, the free end 3a of the smoke-proof hanging wall 3 and the free end 4a of the inclined wall 4 are wires 5 (connection wire). The substantially middle portion of the wire 5 is supported in a state of being wound around a pulley 6 fixed to the chamber upper inner surface 2a in the ceiling chamber 21. Therefore, with rotation of the smoke proof hanging wall 3 around the first rotation support portion 30 in the direction of arrow E1, one end 5a of the wire 5 is pulled downward together with the free end 3a of the smoke proof hanging wall 3 to form the hanging wall forming position P1. Therefore, the inclined wall 4 connected to the other end 5b of the wire 5 rotates around the second rotation support portion 40 in the direction of the arrow E2, and the free end 4a is lifted to the predetermined inclined position P2. .
Further, the inclination angle (inclination position P2) of the inclined wall 4 can be changed by adjusting the length dimension of the wire 5.
Here, the inclination angle of the inclined wall 4 may be, for example, 30 ° or less, and the angle can be adjusted.

  Although not shown in the drawings, the mechanical smoke exhausting equipment 1 includes a smoke exhausting fan, a smoke exhausting duct, a smoke exhausting port (a slit in the ceiling chamber 21), and a fireproof damper, as in a normal smoke exhausting equipment.

Next, the effect | action of the mechanical smoke exhaustion equipment 1 mentioned above is demonstrated in detail with reference to drawings.
Here, although the case of a fire will be described, the indoor space on the right side of the paper shown in FIGS. 1 to 4 is set as a fire area R1, and the left side of the paper is set as a non-fire area R2.

As shown in FIG. 1 and FIG. 3, in everyday life, each of the smoke-proof hanging wall 3 and the inclined wall 4 that are adjacent to each other is disposed at the horizontal position P0 and functions as a normal ceiling 2, and is a flat surface without any unevenness. It is in a state where a simple ceiling surface is formed.
On the other hand, as shown in FIGS. 2 and 4, in the event of a fire, the drooping wall is formed by rotating the smoke-proof hanging wall 3 supported by the smoke-proofing partition wall 22 of the ceiling 2 downward about the first rotation support portion 30. By arranging at the position P1, a smoke-proof section composed of a fire area R1 and a non-fire area R2 is formed in the indoor space, and an opening S is formed in the ceiling 2 on the fire area R1 side.
In addition, the smoked wall 4 is rotated at the same time as the inclined wall 4 on the fire area R1 simultaneously with the rotation of the smoke-proof hanging wall 3 and arranged at the inclined position P2 around the second rotation support portion 40. A passage guided into the ceiling chamber 21 along the slope 4b is secured.

That is, the smoke having buoyancy is guided upward along the slope 4 b of the inclined wall 4 and is drawn into the ceiling chamber 21, and the smoke flows into the opening S formed by opening the smoke-proof hanging wall 3. Will be promoted.
Therefore, the flow of smoke flowing into the ceiling chamber 21 in the vicinity of the smoke proof wall 3 is stabilized and the collision of smoke with the smoke proof wall is suppressed as in the prior art. It is possible to prevent the spread of the fire to the non-fire area that exceeds the smoke wall and is divided by the smoke wall.

  In the present embodiment, the smoke sag wall 3A, 3B and the inclined walls 4A, 4B provided in each of the fire area R1 and the non-fire area R2 are rotated to form an opening S and a guide passage in each ceiling 2. Can be made. In other words, the ceilings 2 on both sides of the smoke barrier wall 22 are provided with openings S that communicate the indoor space and the ceiling chamber 21 respectively. Therefore, even if the smoke generated in the fire area R1 leaks over the smoke-proof hanging wall 3 and leaks into the non-fire area R2, the excess smoke is attracted to the opening S located on the ceiling 2 of the non-fire area R2. Therefore, it is possible to reliably prevent the expansion in the non-fire area R2.

  In addition, a smoke flow path that is drawn into the ceiling chamber 21 by a plurality of small walls 32 provided on the back surface 31a of the wall main body 31 in a state where the smoke-proof hanging wall 3 is disposed at the hanging wall forming position P1 in the event of a fire. As a result, the suction of smoke to the wall body 31 (wall surface) is enhanced, and the efficiency of inflowing into the opening S of the ceiling 2 can be improved, thereby expanding the smoke to the non-fire area R2. It can prevent more reliably.

Furthermore, in this machine smoke exhausting equipment 1, since it is the structure which induces smoke by the inclined wall 4, it is a structure which does not need to increase the amount of smoke exhaust air for exhausting smoke from the inside of the ceiling chamber 21, and smoke-proof dripping wall The smoke expansion prevention property can be improved by a simple structure that only gives rotational driving to the 3 and the inclined wall 4.
Therefore, since it is possible to secure a safe space (non-fire area R2) protected from smoke for a long time, it is suitable for many architectural uses such as office buildings, merchandise stores and hospitals. .

As described above, in the mechanical smoke exhaust system according to the present embodiment, the smoke-proof hanging wall 3 is arranged at the hanging wall forming position P1 and the inclined wall 4 is arranged at the inclined position P2 in the event of a fire. Since the passage for guiding smoke to the opening S is secured not only by the opening S of the ceiling formed by the opening 3 but also by the inclined surface 4b of the inclined wall 4, the smoke generated in the fire region R1 is effectively removed from the ceiling chamber 21. It can be made to flow in, and the prevention of the spread of smoke to the non-fire area R2 can be improved.
In addition, the smoke-proof hanging wall 3 and the inclined wall 4 are each of a rotary type, and function as the ceiling 2 by setting each to the horizontal position P0 in daily life, so that the interior design can be sufficiently ensured.

As mentioned above, although embodiment of the mechanical smoke exhausting equipment by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the present embodiment, a plurality of small walls 32 are provided on the wall main body 31 of the smoke-proof hanging wall 3, but a structure in which these small walls 32 are omitted may be used. In addition, the configuration such as the number and height of the small walls 32 (length in the direction perpendicular to the wall main body 31) can be set as appropriate.

Further, in the present embodiment, the smoke-proof hanging wall 3 and the inclined wall 4 are connected by the wire 5, and the inclined wall 4 is rotated in conjunction with the rotation of the smoke-proof hanging wall 3, but the present invention is limited to this. Never happen. For example, without providing the wire 5, each of the smoke-proof hanging wall 3 and the inclined wall 4 may be rotationally driven using a driving motor.
Furthermore, each dimension of the smoke-proof hanging wall 3 and the inclined wall 4 can be appropriately set according to conditions such as the area of the ceiling 2, the size of the smoke exhaust fan, and the size of the indoor space.

Furthermore, the present invention is not limited to the smoke-proof hanging wall 3 as in the present embodiment, and a structure capable of forming a wall extending further downward than the smoke-proof hanging wall 3 at the hanging wall forming position is adopted. Is also possible.
For example, as shown in FIG. 7, a rotating wall 7 having one end 7 a rotatably supported at the free end 3 a of the smoke-proof hanging wall 3 may be provided. In this case, when the smoke proof hanging wall 3 is moved to the hanging wall forming position P1, the rotating wall 7 is rotated downward in the direction of arrow F1 around the free end 3a of the smoke proof hanging wall 3 to prevent the wall. By making the surface direction substantially the same as that of the smoke hanging wall 3, it is possible to form a state in which the smoke hanging wall 3 extends downward, thereby improving the effect of preventing the spread of smoke to the non-fire area. Can do.

Moreover, as shown in FIG. 8, you may make it provide the slide wall 8 which can protrude outward from the free end 3a along the wall surface direction of the smoke-proof hanging wall 3. As shown in FIG. In addition, as a slide mechanism, the guide means is provided in the smoke-proof drooping wall 3 side, for example, The slide means etc. which move the slide wall 8 along this guide guide are employable. When such a slide wall 8 is provided, when the smoke proof hanging wall 3 is moved to the hanging wall forming position P1, the slide wall 8 is directed outward (downward) from the free end 3a of the smoke proof hanging wall 3. By projecting in the direction of the arrow F2, it is possible to form a state in which the smoke-proof hanging wall 3 extends downward, thereby improving the effect of preventing the spread of smoke to the non-fire area.
As another configuration, although not particularly illustrated, the sheet material may be suspended from the free end of the smoke-proof hanging wall instead of the rotating wall 7 and the sliding wall 8 described above.

DESCRIPTION OF SYMBOLS 1 Machine smoke exhausting equipment 2 Ceiling 3, 3A, 3B Smoke-proof hanging wall 3a Free end 4, 4A, 4B Inclined wall 4a Free end 4b Slope 5 Wire (connection wire)
7 Rotating wall 8 Slide wall 21 Ceiling chamber 22 Smoke-proof compartment wall (smoke-proof compartment)
30 1st rotation support part 31 Wall body 32 Small wall 40 2nd rotation support part P0 Horizontal position P1 Dripping wall formation position P2 Inclination position R1 Fire area (indoor space)
R2 Non-fire area (indoor space)
S opening T guide passage

Claims (6)

A machine smoke exhaust system provided on a ceiling having a ceiling chamber and configured to eliminate fire smoke generated in an indoor space with a smoke-proof section,
A smoke-proof hanging wall that is rotatably supported by the smoke-proof section of the ceiling, and that is rotated downward about the first rotation support to move from a horizontal position to a hanging wall forming position;
It is disposed adjacent to the smoke-proof hanging wall in a horizontal position, and is rotatably supported so that a free end facing the smoke-proof hanging wall is located obliquely upward. An inclined wall that can be moved from a horizontal position to an inclined position by rotating toward
A machine smoke exhaust system characterized by comprising:   The mechanical smoke exhausting equipment according to claim 1, wherein a pair of combinations of the smoke-proof hanging wall and the inclined wall is provided for each indoor space divided into smoke-proof sections.   The said smoke-proof drooping wall is provided with the several small wall arrange | positioned in the said drooping wall formation position at the predetermined interval in the horizontal direction while being extended to an up-down direction. Machine smoke exhaust equipment.   A free end of the smoke-proof hanging wall and a free end of the inclined wall are connected by a connecting wire, and a substantially middle portion of the connecting wire is supported in a state of being wound in the ceiling chamber. The mechanical smoke exhausting equipment according to any one of claims 1 to 3.   The mechanical smoke exhausting equipment according to any one of claims 1 to 4, wherein the smoke-proof hanging wall is provided with a rotating wall rotatably supported at the free end.   The machine according to any one of claims 1 to 4, wherein the smoke-proof hanging wall is provided with a slide wall that can protrude outward from the free end along the wall surface direction. Smoke removal equipment.

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