阅读说明：本技术 一种排烟通风装置、多功能空腔楼盖及制作方法 (Smoke exhaust and ventilation device, multifunctional cavity floor and manufacturing method ) 是由 王勇 任兆卿 部翼翔 何文博 古傲林 王功臣 陈振兴 姜亚强 于 2021-07-30 设计创作，主要内容包括：本发明公开一种排烟通风装置、多功能空腔楼盖及制作方法,适用于建筑领域。多功能空腔楼盖利用充气气囊放入模具直接浇铸构成；多功能空腔楼盖内部设有单个或者多个多功能空腔,空腔楼盖内部为单个空腔时楼盖四周设有用于连接的开孔,多个单空腔楼盖之间通过开孔相互连接形成烟道；空腔楼盖内部为多个空腔时,空腔楼盖内的各个空腔之间通过在梁之间设置通孔相互连接形成烟道和通风管道,所述空腔内设有光滑涂层以符合排烟要求,其中楼盖的下顶板上间隔设有多个与空腔连通的排烟口,利用空腔形成的烟道在火灾时进行排烟。排烟通风装置的排烟口风道为水平方向,有效防止吸穿现象。其结构简单,制造成本低,重量轻,集成了排烟烟道。(The invention discloses a smoke exhaust and ventilation device, a multifunctional cavity floor and a manufacturing method, and is applicable to the field of buildings. The multifunctional cavity floor is formed by directly casting the inflatable airbag in a mould; the multifunctional cavity floor is internally provided with a single or a plurality of multifunctional cavities, the periphery of the floor is provided with holes for connection when the cavity floor is internally provided with a single cavity, and a plurality of single cavity floors are mutually connected through the holes to form a flue; when a plurality of cavities are formed in the cavity floor, the cavities in the cavity floor are connected with each other through the through holes arranged between the beams to form a flue and a ventilation pipeline, a smooth coating is arranged in the cavity to meet the smoke exhaust requirement, a plurality of smoke exhaust ports communicated with the cavities are arranged on the lower top plate of the floor at intervals, and the flue formed by the cavities is used for exhausting smoke in a fire disaster. The air flue of the smoke outlet of the smoke exhaust ventilator is in the horizontal direction, so that the phenomenon of suction penetration is effectively prevented. The smoke exhaust flue is simple in structure, low in manufacturing cost, light in weight and integrated.)

1. A multi-functional cavity superstructure, its characterized in that: the cavity floor comprises a plurality of cavity floor slabs which are combined with each other, a single or a plurality of multifunctional cavities are arranged in the cavity floor slabs, the periphery of the floor is provided with holes for connection when the cavity floor is a single cavity, and the single cavity floor slabs are connected with each other through the holes to form a flue; when a plurality of cavities are arranged in the cavity floor slab, the cavities in the cavity floor slab are connected with each other by arranging through holes between beams to form a flue, a smooth coating is arranged in the cavity to meet the smoke exhaust requirement, a plurality of smoke exhaust ports communicated with the cavities are arranged on the lower top plate of the floor slab at intervals, and the flue formed by the cavities is used for smoke exhaust in a fire disaster or is used as a ventilation pipeline at ordinary times.

2. The multi-functional cavity superstructure of claim 1, characterized in that: a guide device for adjusting the trend of the flue or the air duct is further arranged in the cavity of the cavity floor, and the guide device can be adjusted as required to provide negative pressure and guide for smoke exhaust.

3. The multi-functional cavity superstructure of claim 1, characterized in that: still be equipped with fire control pipeline, air conditioning pipeline and parcel have waterproof material's power cord for the illumination in the multi-functional cavity, a plurality of trompils of interval arrangement on the lower roof of superstructure to when arranging the coating that meets water color change around the trompil, thereby when the condition of leaking appears in fire hose, the meeting that leaks is followed trompil department and is dripped downwards, and coating also can change color simultaneously, thereby plays the warning effect, is convenient for look for the leak source and maintains.

4. The multi-functional cavity superstructure of claim 2, characterized in that: the lower part of the cavity floor is also provided with a fixed or lifting fireproof vertical wall, the side wall of the fireproof vertical wall is provided with a smoke suction inlet, and the smoke suction inlet is connected with the multifunctional cavity through a flue arranged in the fireproof vertical wall so as to realize the smoke exhaust effect.

5. A kind of smoke exhaust ventilator, its characteristic is: it is including setting up the protruding structure in the exhaust fume channel or the superstructure below that has the function of discharging fume, the side level of protruding structure sets up a plurality of suction gas ports, form the flue that the multichannel level admitted air in the ventilation unit side of discharging fume during the use, the suction gas port that the side level set up is better when discharging fume and is only taken away the regional flue gas of certain level, prevent that the flue gas from inhaling the phenomenon of wearing, consequently, can use and discharge fume bigger suction than conventional convulsions and carry out high-speed smoke evacuation, the efficiency that has improved convulsions and discharge fume still guarantees not to produce and inhales the phenomenon and takes away the air in the lower space of level.

6. A kind of smoke exhaust ventilator, its characteristic is: it is including being used for fixing the base in the exhaust passage or having the superstructure below of function of discharging fume, and the base is connected with the anti-suction baffle that changes the wind channel trend through connection structure, wherein is equipped with the exhaust port in the middle of the base, prevents that suction baffle sets up under the exhaust port, the upper surface of preventing suction baffle is just being equipped with the toper arch to the exhaust port, thereby utilizes the toper arch to make the negative pressure wind channel that produces from the exhaust port become the level through the toper arch and get into the wind channel, thereby the wind channel effectively prevents that the flue gas from producing the suction that the convection current offsets the flue gas each other through preventing suction baffle production ascending angle simultaneously.

7. A smoke exhaust ventilator as claimed in claim 6 wherein: the connection structure is rigid, folding or flexible connection structure, and when the connection structure is folding or flexible connection structure, when the ventilation unit that discharges fume is out of work, the anti-suction baffle plate is through being folding or the folding winding of flexible connection structure by the income exhaust port thereby reduce the encroachment in space.

8. A manufacturing method for preparing the multifunctional cavity floor system as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:

manufacturing a floor system mold, arranging reinforcing steel bars or reinforcing ribs and I-shaped steel in the floor system mold, then arranging a single air bag or air bag string filled with air on a lower top plate of the floor system mold, wherein the air bag string comprises air bags with the number matched with that of cavities required to be divided by a floor system, the air bags are mutually connected through connecting pipes, the two sides of the air bag at the outermost sides of the two ends are respectively provided with the connecting pipes extending out of the two sides of the floor system mold, then injecting concrete slurry with the thickness enough for the lower top plate into the floor system mold, and forming the lower top plate of the floor system after solidification; and then injecting concrete slurry into the floor mould until the top of the air bag or the air bag string is not over the height of an upper top plate formed by the top of the air bag or the air bag string, taking out the concrete floor from the floor mould after the concrete is dried, then discharging the air bag or the air bag string through a connecting pipeline extending out of the concrete floor, and extracting the air bag or the air bag string from connecting holes formed at two sides of the concrete floor after the air bag or the air bag string is deflated, thereby finally obtaining a hollow floor with a single inner cavity or a plurality of interconnected cavities.

9. A manufacturing method for preparing the multifunctional cavity floor system as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:

manufacturing a floor system mould, arranging reinforcing steel bars or reinforcing ribs and I-shaped steel in the floor system mould, injecting concrete for forming a lower top plate into the floor system mould, forming the lower top plate of the floor system after the concrete is solidified, then arranging a single air bag, an air bag string and a box mould in the floor system mould or a plurality of box moulds mutually connected through a pipeline mould, pouring the concrete into the floor system mould until the concrete is close to the tops of the single air bag, the air bag string and the box mould or the plurality of box moulds mutually connected through the pipeline mould, stopping after the concrete is solidified, taking out the single air bag, the air bag string and the box mould or the plurality of box moulds mutually connected through the pipeline mould to form a concrete floor system box body internally provided with a cavity, then spraying a layer of high-temperature-resistant coating with smooth surface on the inner side of the cavity and the inner side of a connecting pipeline, then arranging a prefabricated upper top plate above the floor system box body or laying a steel mesh and pouring the upper top plate with matched size to form the hollow floor system box body A cavity floor.

10. The method for manufacturing a multifunctional cavity floor as claimed in claim 8 or 9, wherein: the pipelines connected between the cavities are in spindle structures with two large ends and a small middle part so as to reduce the resistance of ventilation; the volume and the structure of a plurality of inflatable air bags or a plurality of box-type moulds forming the cavity of the floor system are arranged according to actual requirements, so that cavities with different volumes and different structures which are connected with each other are formed; the inflatable air bag string or the plurality of box-shaped molds are horizontally and linearly arranged in the floor system, or are spirally arranged in the floor system, or are coiled in a pipe network or a snake-shaped manner to form different cavity connecting structures.

Technical Field

The invention relates to a smoke exhaust and ventilation device, a multifunctional cavity floor and a manufacturing method, and is particularly suitable for the field of cavity floor structures in the field of buildings.

Background

With the improvement of the requirement of building construction efficiency, more and more building projects adopt assembly construction, namely various prefabricated functional modules are assembled together as required during construction, but simple integral assembly construction is difficult to realize due to the particularity of pipelines, and modularization and unitization are difficult to realize during maintenance of assembled components after use; at present, the pipeline is laid in the assembly box, and the floor structure is divided in a modularized mode, but the problem that the maintenance is difficult is solved, and therefore the unit modularized maintenance is achieved by using the detachable floor and the assembly box and utilizing later-stage fixed-point inspection and maintenance.

In the manufacturing process of various existing hollow floor slabs, molds such as a steel mesh box and the like need to be reserved in the floor system to prevent the cavity from being invaded by concrete, the steel mesh box in the floor system cannot be taken out after the steel mesh box is poured, the cost is high, and meanwhile, the inner surface of the formed cavity is rough and cannot be used for smoke exhaust and ventilation; in addition, the steel net cage is usually extruded to deform in the process of preventing concrete from invading, and the generated cavity is far smaller than the designed volume, so that the weight of the floor is increased, and concrete materials are wasted; third, the steel box is limited in cost and material that cannot be made large, thus also limiting the height of the hollow floor. Fourthly, as for the traditional filling body such as a steel net box or a concrete assembly box, the main function is to form a cavity, and the mechanical action is not considered.

Disclosure of Invention

Aiming at the problems, the invention provides a smoke exhaust ventilator, a multifunctional cavity floor and a manufacturing method, wherein the smoke exhaust ventilator, the multifunctional cavity floor and the manufacturing method are simple in structure, integrate an air duct for smoke exhaust and ventilation, and are low in manufacturing cost and light in weight.

A multifunctional cavity floor comprises a plurality of cavity floors combined with each other, wherein a single or a plurality of multifunctional cavities are arranged inside the cavity floors, the periphery of the floor is provided with holes for connection when the cavity floors are single cavities, and the single cavity floors are connected with each other through the holes to form a flue; when a plurality of cavities are arranged in the cavity floor slab, the cavities in the cavity floor slab are connected with each other by arranging through holes between beams to form a flue, a smooth coating is arranged in the cavity to meet the smoke exhaust requirement, a plurality of smoke exhaust ports communicated with the cavities are arranged on the lower top plate of the floor slab at intervals, and the flue formed by the cavities is used for smoke exhaust in a fire disaster or is used as a ventilation pipeline at ordinary times.

A guide device for adjusting the trend of the flue is further arranged in the cavity of the cavity floor, and the guide device is adjustable as required to provide negative pressure and guide for smoke exhaust.

Still be equipped with fire control pipeline, air conditioning pipeline and parcel have waterproof material's power cord for the illumination in the multi-functional cavity, a plurality of trompils of interval arrangement on the lower roof of superstructure to when arranging the coating that meets water color change around the trompil, thereby when the condition of leaking appears in fire hose, the meeting that leaks is followed trompil department and is dripped downwards, and coating also can change color simultaneously, thereby plays the warning effect, is convenient for look for the leak source and maintains.

The lower part of the cavity floor is also provided with a fixed or lifting fireproof vertical wall, the side wall of the fireproof vertical wall is provided with a smoke suction inlet, and the smoke suction inlet is connected with the multifunctional cavity through a flue arranged in the fireproof vertical wall so as to realize the smoke exhaust effect.

The utility model provides a smoke exhaust ventilator, it is including setting up the protruding structure in smoke exhaust passage or the superstructure below that has the function of discharging fume, and the side level of protruding structure sets up a plurality of entrances that inhale the flue gas, forms the flue that multichannel level was admitted air in smoke exhaust ventilator side during the use, and the flue gas entrance that the side level set up only takes away the regional flue gas of certain level better assurance when discharging fume, prevents the flue gas suction phenomenon.

A smoke exhaust ventilator comprises a base fixed below a smoke exhaust channel or a floor system with smoke exhaust function, wherein the base is connected with an anti-suction baffle through a connecting structure, a smoke exhaust port is arranged in the middle of the base, the anti-suction baffle is arranged right below the smoke exhaust port, the upper surface of the anti-suction baffle is provided with a conical bulge right facing the smoke exhaust port, a curve structure of the conical bulge is utilized to enable a negative pressure air channel generated from the smoke exhaust port to be changed into a horizontal air channel through the conical bulge, and an inclined upward angle is generated when the air channel passes through the bulge of the anti-suction baffle so as to effectively prevent smoke from generating convection to mutually offset suction force to the smoke,

the connection structure is rigid, folding or flexible connection structure, and when the connection structure is folding or flexible connection structure, when the ventilation unit that discharges fume is out of work, the anti-suction baffle plate is through being folding or the folding winding of flexible connection structure by the income exhaust port thereby reduce the encroachment in space.

A manufacturing method of a multifunctional cavity floor comprises the following steps:

manufacturing a floor system mold, arranging reinforcing steel bars or reinforcing ribs and I-shaped steel in the floor system mold, injecting concrete slurry with enough thickness of a lower top plate into the floor system mold, solidifying to form the lower top plate of the floor system, then arranging a single air bag or air bag string filled with air on the lower top plate of the floor system mold, wherein the air bag string comprises air bags with the number matched with that of cavities required to be divided by the floor system, the air bags are mutually connected through connecting pipelines, and the two sides of the air bag at the outermost sides of the two ends are respectively provided with the connecting pipelines extending out of the two sides of the floor system mold; and then injecting concrete slurry into the floor mould until the top of the air bag or the air bag string is not over the height of an upper top plate formed by the top of the air bag or the air bag string, taking out the concrete floor from the floor mould after the concrete is dried, then discharging the air bag or the air bag string through a connecting pipeline extending out of the concrete floor, and extracting the air bag or the air bag string from connecting holes formed at two sides of the concrete floor after the air bag or the air bag string is deflated, thereby finally obtaining a hollow floor with a single inner cavity or a plurality of interconnected cavities.

A manufacturing method of a multifunctional cavity floor comprises the following steps:

manufacturing a floor system mould, arranging reinforcing steel bars or reinforcing ribs and I-shaped steel in the floor system mould, injecting concrete for forming a lower top plate into the floor system mould, forming the lower top plate of the floor system after the concrete is solidified, then arranging a single air bag, an air bag string and a box mould in the floor system mould or a plurality of box moulds mutually connected through a pipeline mould, pouring the concrete into the floor system mould until the concrete is close to the tops of the single air bag, the air bag string and the box mould or the plurality of box moulds mutually connected through the pipeline mould, stopping after the concrete is solidified, taking out the single air bag, the air bag string and the box mould or the plurality of box moulds mutually connected through the pipeline mould to form a concrete floor system box body internally provided with a cavity, then spraying a layer of high-temperature-resistant coating with smooth surface on the inner side of the cavity and the inner side of a connecting pipeline, then arranging a prefabricated upper top plate above the floor system box body or laying a steel mesh and pouring the upper top plate with matched size to form the hollow floor system box body A cavity floor.

The pipelines connected between the cavities are in spindle structures with two large ends and a small middle part so as to reduce the resistance of ventilation; the volume and the structure of a plurality of inflatable air bags or a plurality of box-type moulds forming the cavity of the floor system are arranged according to actual requirements, so that cavities with different volumes and different structures which are connected with each other are formed; the inflatable air bag string or the plurality of box-shaped molds are horizontally and linearly arranged in the floor system, or are spirally arranged in the floor system, or are coiled in a pipe network or a snake-shaped manner to form different cavity connecting structures.

Has the advantages that:

the smoke exhaust channel is formed by connecting the cavity through the pipeline arranged in the floor system, and the smooth coating is arranged in the cavity, so that the cavity in the floor system meets the smoke exhaust requirement, and the external smoke exhaust channel is saved, thereby saving the cost and reducing the space occupation;

a smoke guide device is also arranged in the smoke discharge channel formed by the cavity, so that the smoke discharge direction in the smoke discharge channel is controllable and the control is flexible;

be equipped with on the lower roof of superstructure leak with the opening and meet water color changing coating, when the condition that leaks appears in fire hose, leak and can follow trompil department and drip downwards, coating also can change colour simultaneously to play the warning effect, be convenient for look for the leak source and maintain.

The side surface of the smoke-blocking vertical wall arranged on the floor is provided with the smoke-blocking vertical wall communicated with the smoke exhaust channel, so that the smoke-blocking vertical wall is not only used for blocking smoke, but also can realize the smoke exhaust function, and the escape safety time of personnel in fire is greatly prolonged;

the smoke exhausting and ventilating device is of the convex structure, the smoke sucking port is arranged on the side face of the convex structure, and compared with the conventional smoke exhausting port, if the suction force is too large, the smoke sucking and penetrating phenomenon is easily generated, so that the smoke exhausting capacity of each smoke exhausting port is limited, and the smoke sucking and penetrating phenomenon is more difficult to occur by arranging the smoke sucking port on the side face of the smoke exhausting and ventilating device, so that the smoke exhausting capacity is larger than that of the conventional structure; in addition, the smoke exhaust and ventilation device forms an air channel with radian through the anti-suction baffle, so that the smoke is effectively reduced, the convection generated by the smoke counteracts the suction force on the smoke, and the flexible and foldable connecting mechanism can ensure that the anti-suction baffle can be taken in the smoke outlet when not in use, so that the space is occupied.

According to the manufacturing method of the multifunctional cavity floor, disclosed by the invention, the floor is poured through the air bag and the mold, the air bag and the mold can be quickly removed after pouring, and the mutually communicated cavity is formed in the floor, no other auxiliary materials are needed, no steel net cage or other fillers are left in the finished floor, the manufacturing cost is low, the flat weight is low, the combination among a plurality of floors is convenient, the cavities in the floors are connected and communicated, and the construction period is effectively saved.

Drawings

FIG. 1 is a schematic view of an airbag array of the present invention;

FIG. 2 is a top plan view of a multi-functional cavity floor made using an air bag in accordance with the present invention;

FIG. 3 is a cross-sectional view of a multi-functional cavity floor of the present invention;

FIG. 4 is a bottom view of the multi-functional cavity floor of the present invention;

FIG. 5 is a cross-sectional view of a multi-functional cavity floor made using the tank mold of the present invention;

FIG. 6 is a schematic structural view of a smoke evacuation ventilator of the present invention;

fig. 7 is a structural view of the penetration preventing damper of the smoke exhaust ventilator of the present invention when opened.

In the figure: 1-air bag, 2-connecting pipeline, 3-upper top plate, 4-lower top plate, 5-main beam, 6-rib beam, 7-hole, 8-concrete cover plate, 9-box type mould, 10-connecting structure, 11-conical bulge, 12-smoke outlet, 13-suction-through prevention baffle plate and 14-cavity.

Detailed Description

Embodiments of the invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the multifunctional cavity floor of the present invention comprises a plurality of cavity floors combined with each other, wherein a single or a plurality of multifunctional cavities 14 are provided in the cavity floors, openings for connection are provided around the floor when a single cavity 14 is provided in the cavity floors, and a plurality of single cavity 14 floors are connected with each other through the openings on the main beam 5 to form a flue; when a plurality of cavities 14 are formed in the cavity floor, the cavities 14 in the cavity floor are connected with each other through the through holes arranged between the rib beams 6 to form a flue, a smooth coating is arranged in the cavity 14 to meet the smoke exhaust requirement, a plurality of smoke exhaust ports 12 communicated with the cavities 14 are arranged on the lower top plate 4 of the floor at intervals, and the flue formed by the cavities 14 is used for exhausting smoke in a fire. A guide device for adjusting the trend of the flue is further arranged in the cavity 14 of the cavity floor system, and the guide device can be adjusted as required to provide negative pressure and guide for smoke exhaust.

Still be equipped with fire control pipeline, air conditioning pipeline and parcel have waterproof material's power cord for the illumination in the multi-functional cavity 14, a plurality of trompils of interval arrangement on the roof 4 down of superstructure to arrange the coating that meets water color-changing around the trompil, thereby when the condition of leaking appears in fire hose, leak and can follow trompil department and drip downwards, coating also can change color simultaneously, thereby play the warning effect, be convenient for look for the leak source and maintain.

The lower proper position of the cavity floor is also provided with a fixed or lifting fireproof vertical wall, the side wall of the fireproof vertical wall is provided with a smoke suction inlet, and the smoke suction inlet is connected with the multifunctional cavity 14 through a flue arranged in the fireproof vertical wall so as to realize the smoke exhaust effect.

As shown in fig. 3, a method for manufacturing a multifunctional cavity floor comprises the following steps:

manufacturing a floor system mold, arranging reinforcing steel bars or reinforcing ribs and I-shaped steel in the floor system mold, injecting concrete slurry with enough thickness of a lower top plate 4 into the floor system mold, solidifying to form the lower top plate 4 of the floor system, then arranging a single air bag 1 or an air bag string filled with air on the lower top plate 4 of the floor system mold, wherein the air bag string comprises air bags 1 with the number matched with that of cavities 14 required to be divided by the floor system, the air bags 1 are mutually connected through connecting pipelines 2, and connecting pipelines 2 extending out of two sides of the air bag 1 at the outermost sides of two ends are respectively arranged at two sides of the air bag 1; and then injecting concrete slurry into the floor mould until the height of the upper top plate 3 is formed by the top of the air bag 1 or the air bag string which is not filled with air, taking out the concrete floor from the floor mould after the concrete is dried, then discharging the air bag 1 or the air bag string through a connecting pipeline 2 extending out of the concrete floor, and extracting the air bag 1 or the air bag string from connecting holes formed in two sides of the concrete floor after the air bag 1 or the air bag string is deflated, thereby finally obtaining a floor with a single cavity 14 or a cavity with a plurality of interconnected cavities 14.

As shown in fig. 5, a method for manufacturing a multifunctional cavity floor comprises the following steps:

manufacturing a floor system mould, arranging reinforcing steel bars or reinforcing ribs and I-shaped steel in the floor system mould, injecting concrete for forming a lower top plate 4 into the floor system mould, forming the lower top plate 4 of the floor system after the concrete is solidified, then arranging a single air bag 1, an air bag string and a box type mould 9 which are coated with oil on the outer surface or a plurality of box type moulds 9 which are mutually connected through a pipeline mould in the floor system mould, forming holes on the side wall of the box type mould 9 and arranging a pipeline mould, pouring the concrete into the floor system mould until the concrete is close to the tops of the single air bag 1, the air bag string and the box type mould 9 or the plurality of box type moulds 9 which are mutually connected through the pipeline mould, stopping after the concrete is solidified, taking out the single air bag 1, the air bag string and the box type mould 9 or forming a concrete box body of the floor system which is internally provided with a cavity 14 through the plurality of box type moulds 9 which are mutually connected through the pipeline mould, then spraying a layer of high temperature resistant coating on the inner side of the cavity 14 and the inner side of the connecting pipeline 2 to ensure that the surface is smooth, then, arranging a prefabricated upper top plate 3 above a floor system box body or pouring the floor system upper top plate 3 with matched size after paving a steel mesh to form a cavity floor system, specifically, manufacturing a cover plate 8 with matched size with the floor system box body to form the upper top plate 3, spraying a layer of high-temperature-resistant coating with smooth surface at the matched position of the inner side of the cover plate 8 and a cavity 14, and then combining and sealing the cover plate 8 and the floor system box body up and down to form the cavity floor system, wherein the floor system box body comprises a lower top plate 4, a main beam 5 is arranged around the lower top plate 4, and a plurality of rib beams 6 are arranged in the middle for separation; or after the air bag 1 or the box type mold 9 is taken out, a layer of steel mesh is laid above the formed concrete floor box body with the cavity 14 inside, and then cement is poured above the steel mesh to form the floor top plate 3.

The outer sides of the air bags 1 or the box-type dies 9 in the inflatable air bag string are coated with a layer of grease which is convenient for demoulding, and reinforcing ribs for preventing the reinforcing structure from being damaged are arranged in the used air bags 1.

The hollow cavity 14 in the floor and the pipeline connected between the hollow cavities 14 are all spindle structures with large ends and small middle parts so as to reduce the resistance of ventilation; the volume and the structure of a plurality of inflatable airbags 1 or a plurality of box-type molds 9 which form the floor cavity 14 are set according to actual requirements, so that cavities 14 with different volumes and different structures which are connected with each other are formed; the inflatable air bag string or the plurality of box-shaped moulds 9 are horizontally and linearly arranged in the floor system, or are spirally arranged in the floor system in a pipe network or a snake-shaped disc manner to form different cavity 14 connecting structures 10.

The utility model provides a ventilation unit discharges fume, it is including setting up the protruding structure in the exhaust passage or the superstructure below that has the function of discharging fume, the side level of protruding structure sets up a plurality of suction gas ports, form the flue that the multichannel level was admitted air in the ventilation unit side of discharging fume during the use, the regional flue gas of certain level is only taken away in the better assurance of the suction gas port that the side level set up when discharging fume, prevent that the flue gas from inhaleing and wear the phenomenon, consequently, can use and exhaust fume bigger suction than conventional convulsions and carry out high-speed smoke exhaust, the efficiency that has improved convulsions and discharge fume still guarantees not to produce and inhales and wear the phenomenon and take away the air in the lower space of level. The smoke exhaust and ventilation device can also be used as an active ventilation device when smoke is not exhausted, and a flue formed by a floor cavity is compositely utilized.

As shown in fig. 6 and 7, a smoke exhaust ventilator comprises a base fixed below a smoke exhaust channel or a floor with smoke exhaust function, the base is connected with a penetration preventing baffle 13 through a connecting structure 10, wherein a smoke exhaust port 12 is arranged in the middle of the base, the penetration preventing baffle 13 is arranged under the smoke exhaust port 12, the upper surface of the penetration preventing baffle 13 is provided with a conical protrusion 11 facing the smoke exhaust port 12, a curve structure of the conical protrusion 11 is utilized to enable a negative pressure air channel generated from the smoke exhaust port 12 to be changed into a horizontal air channel through the conical protrusion 11, an inclined upward angle is generated when the air channel passes through the penetration preventing baffle 13, so that the smoke is effectively prevented from generating convection to counteract the suction force of the smoke mutually, the connecting structure 10 is a rigid, folding or flexible connecting structure 10, when the connecting structure 10 is a folding or flexible connecting structure 10, the smoke exhaust ventilator does not work, the anti-suction-through baffle 13 is folded and wound into the smoke exhaust port 12 by the folding or flexible connecting structure 10, so that the space invasion is reduced;

specifically, the structure of the conical protrusion 11 arranged on the anti-penetration baffle 13 is adjusted according to the wind speed requirement, and the structure of the conical protrusion 11 is a conventional conical structure or a trumpet-shaped conical structure; the suction-through preventing baffle 13 is connected with the base through a rope, when the suction-through preventing baffle 13 is taken into the smoke outlet 12 in the base, the rope is folded and wound, the suction-through preventing baffle 13 is connected with the smoke outlet 12 through wax sealing, when a fire disaster occurs to generate high-temperature smoke, the wax sealing is melted, the suction-through preventing baffle 13 automatically falls under the action of gravity and straightens the rope, and therefore the automatic opening of the smoke exhaust ventilation device is achieved.