WO2022092761A1

WO2022092761A1 - Intake-type smoke removal system

Info

Publication number: WO2022092761A1
Application number: PCT/KR2021/015096
Authority: WO
Inventors: 김성우
Original assignee: 김정규
Priority date: 2020-10-26
Filing date: 2021-10-26
Publication date: 2022-05-05
Also published as: JP7561982B2; JP2023547135A; EP4230922A1; EP4230922A4; US20230400203A1

Abstract

The present invention relates to an intake-type smoke removal system. The system is to discharge gas flowing into a smoke removal zone to the outside of the air removal zone and comprises: a vacuum-generating multistage Venturi for passing water provided from the outside, generating a negative pressure according to the Venturi effect to suction gas inside a smoke removal zone while the water passes therethrough, and mixing the suctioned gas with the water to discharge the mixture; a water supply unit for supplying water to the vacuum-generating multistage Venturi; a nozzle for spraying the water supplied through the water supply unit into the vacuum-generating multistage Venturi. The intake-type smoke removal system of the present invention configured as described above forms a negative pressure in the event of a fire, suctions surrounding smoke and toxic gas, and then mixes same with water to discharge the mixture to the outside, thereby preventing smoke and toxic gas from moving to a smoke removal zone and minimizing human casualties. In addition, even in a situation where there is no fire, various airborne pollutants such as indoor yellow dust or fine dust are suctioned and removed to purify the indoor air. Furthermore, the present invention can not only be used in industrial sites such as coal storage yards, cement factories, construction sites, oil refineries, steel mills and shipyards that emit dust, oil vapors, or toxic chemicals, but can also be used as an air purifier for agricultural and fisheries purposes or military purposes.

Description

Intake type smoke control system

The present invention relates to a smoke control facility installed in a building, and more particularly, by rapidly inhaling smoke and toxic gas generated during a fire, mixing it with water and removing it, By preventing smoke from spreading in the /Smoke Removal Zone, fire room (living room), evacuation routes, hallways, stairs, etc. it's about

In most of the buildings constructed in recent years, various firefighting equipment that meet the standards stipulated in the strengthened building firefighting law are compulsory. These fire-fighting-related facilities include fire-fighting facilities, smoke exhaust facilities, smoke control (control) facilities, alarm facilities, evacuation facilities, fire-fighting water facilities, fire-fighting activity related facilities, and the like. The basic purpose of firefighting equipment is, of course, to detect fire early, protect or evacuate people in the building, and to minimize damage to life and property due to fire, such as enabling fire extinguishing activities at the initial stage.

Among the above facilities, the smoke control (control) facility is a positive pressure facility, for example, by blowing air into each floor in case of a fire to raise the internal pressure of the escape passage in the building higher than the pressure of smoke and toxic gas, so that the smoke in the escape passage It blocks the inflow of toxic gases and prevents suffocation of escapees. If a smoke exhaust facility is a facility that discharges toxic gas outside a building, the smoke control facility blocks and maintains the toxic gas from entering.

In other words, the smoke control (control) facility is a type of fire extinguishing facility that detects smoke generated in the early stage of a fire in a building, discharges the smoke from the fire room (living room), and prevents the smoke from spreading in the evacuation route, such as hallways and stairs. This is a facility that protects residents from smoke and allows them to safely evacuate, and at the same time controls smoke so that the fire brigade can extinguish fire and discharges it to the outside (exhaust smoke/排煙/Fire Smoke Ventilation). .

Ventilation (control) facilities can be divided into living room ventilation (control) facilities and stair rooms and auxiliary rooms (control) facilities depending on the location where they are installed, but the technical contents are almost the same.

The living room ventilation (control) equipment includes a supply air blower and an exhaust blower for discharging smoke and heat in the living room where a fire has occurred. The supply air blower supplies more air than the exhaust blower exhausts so that evacuation and firefighting activities can be carried out. In addition, the smoke control (control) facility in the stairwell and annex is a facility to protect the evacuation from toxic gas by making the internal pressure of the stairwell and the annex (hereinafter referred to as the air-control area) higher than that of the living room so that the smoke in the living room does not penetrate.

On the other hand, the conventional ventilation (control) facilities for stair rooms and ancillary rooms have a method of supplying external air to the ventilation (control) zone using a control blower and a vertical windpipe. That is, it is to prevent the inflow of smoke into the ventilation (control) zone by increasing the pressure by supplying air into the ventilation (control) zone through the ventilation damper with a blower installed on the basement or roof. However, these ventilation (control) facilities do not perform their normal functions when the pressure falls outside the control area (windows, entrances), and the corridors and stairs of the control area are filled with smoke and toxic gases, suffocating escapees. It is true that it has already been found to be useless in various news reports and official field tests and inspections that it is exposed to the big problem of causing suffocation/suffocations.

1 and 2 are diagrams for explaining the problem of a conventional smoke control (control) facility.

As shown, a windpipe 11 is provided between the residential space 13 of the building 10 and the smoke control (control) area 15 . Pungdo 11 is a vertical duct installed in a common hole (not shown), and guides air supplied from the ventilation fan 17 in the basement upward. The malfunction of introducing excessive air through the ventilation dampers (15a) of each floor installed in the ventilation (control) 15, corridor, stairs, etc. It has been revealed through several field experiments and inspections that it is a big problem that it is impossible to escape because the door cannot be opened in the living space 13 by the elderly as well as the strong adult men by raising it excessively.

When the window 15c or the doorway 15e of the ventilation (control) zone 15 is open, the internal pressure of the ventilation (control) zone cannot be increased like a puncture in a car tire. No matter how much wind is supplied, the internal pressure of the milling area does not increase.

In addition, various additional devices are applied to seal or seal the corridor, stairs, etc. in the smoke control (control) zone 15, but if the corridor and stairs are completely sealed, there is no ventilation in real life, so smoke control The temperature inside the (control) zone 15 rises to 40℃ or higher in midsummer, and the inconvenience to residents (especially children, the elderly, and the disabled) is indescribable, such as clothes soaking in sweat while waiting for the elevator, and many side effects. This is being derived

Regardless of whether the smoke control (control) area is sealed, it is always comfortable in everyday real life space in any season, and in case of fire, it is possible to secure a safe evacuation route and evacuation time to the maximum. HCL), hydrogen cyanide (HCN), etc. are removed as much as possible from the evacuation passage, and the technology to lower the lethal dose of various toxic gases to below a safe range is urgently required.

The present invention was created to solve the above problems, and it is possible to minimize the loss of life by preventing the movement of smoke and toxic gases to the control area in case of a fire, and to purify the indoor air even in a situation where there is no fire, and to prevent pollution. An object of the present invention is to provide an intake type ventilation system that can be used to prevent the discharge of pollutants in industrial sites that discharge substances.

The intake type smoke control system of the present invention as a means of solving the problems for achieving the above object is to exhaust the gas flowing into the air removal area to the outside of the air removal area, so that water provided from the outside passes through, while the water passes a vacuum-generating multi-stage venturi for generating negative pressure according to the turi effect to suck in the gas inside the air removal area, and mixing the inhaled gas with water to discharge it; a water supply unit for supplying water to the vacuum generation multi-stage venturi; A nozzle for spraying water supplied through the water supply unit into the vacuum generating multi-stage venturi is provided.

In addition, the multi-stage venturi for generating vacuum is installed in a common pit communicating with the manufacturing area of each floor through a through passage, and a water supply unit; A water pump for pumping water, a main water supply pipe for guiding the water pumped by the water pump to the vacuum generating multi-stage venturi side, and a branch pipe connected to the main water supply pipe and extending toward the inlet side of the vacuum generating multi-stage venturi and connected to the nozzle .

In addition, a plurality of the vacuum generating multi-stage venturi is arranged vertically spaced apart, and between each vacuum generating multi-stage venturi, the water sprayed from the upper vacuum generating multi-stage venturi is to prevent hitting the lower vacuum generating multi-stage venturi A blocking guide plate is provided.

In addition, a mixing conduit extending vertically and accommodating the vacuum generating multi-stage venturi and the blocking guide plate, and guiding the water and gas mixture ejected from the vacuum generating multi-stage venturi to the lower portion is further included.

In addition, the vacuum generation multi-stage venturi; A ben having the nozzle provided at the upper end and ejecting water sprayed from the nozzle downwards, and a ben that surrounds the injection pipe and guides water sprayed through the injection pipe downward, the diameter of which expands as it goes down. Two casings are provided.

In addition, the injection pipe; A first injection pipe coupled to the nozzle and having an inlet for receiving water and gas at the same time, and an outlet for discharging water mixed with gas; a second injection pipe having an outlet for mixing and discharging the gas mixture water jetted from the injection pipe; A mixing blade is formed that allows the mixture to be mixed.

In addition, the venturi casing; A fixed tube accommodating the second injection pipe, the upper end having an inlet for inhaling gas, a rotating tube rotatably installed at the lower end of the fixed tube, and a rotating tube located inside the rotating tube and collide with the sprayed water, It includes an impeller blade that receives kinetic energy from and rotates the rotating tube.

And, at the lower end of the fixed tube, a receiving groove extending in the circumferential direction and having a predetermined cross-sectional shape is formed along the circumferential direction, and at the upper end of the rotating tube, the receiving groove is inserted and supported in the receiving groove and inserted into the receiving groove in the circumferential direction. A slidable bent insertion end is formed.

In addition, an oil-free solid lubricating coating or a ring-type bearing is further installed between the bent insertion end and the receiving groove.

In addition, a water supply pump for recycling water discharged through the mixing conduit is further provided.

The intake type smoke control system of the present invention as described above forms a negative pressure in the event of a fire, inhales surrounding smoke and toxic gas, mixes it with water and discharges it to the outside, thereby preventing the smoke and toxic gas from moving to the control area and human casualties can be minimized.

In addition, even in a situation where a fire does not occur, various airborne pollutants such as yellow dust or fine dust in the room are sucked in and removed to purify the indoor air, and furthermore, dust, oil vapor, or toxic chemicals are discharged. It can be used not only in industrial sites such as coal storage yards, cement factories, construction sites, oil refineries, steel mills and shipyards, but also as air purifiers for agriculture and fisheries or military use.

1 and 2 are diagrams for explaining the problem of the conventional smoke control (control (制御 / Smoke Control) and exhaust (exhaust smoke / 排煙 / Fire Smoke Ventilation) equipment to the outside).

3 and 4 are views for explaining the basic structure and operation method of an intake type smoke removal system (除煙 / Smoke Removal System) according to an embodiment of the present invention.

5 and 6 are views showing the configuration of an intake type smoke removal system according to an embodiment of the present invention.

7A to 7C are diagrams for explaining the structure of the vacuum generating multi-stage venturi shown in FIG. 5 .

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

The intake-type smoke control system of the present invention inhales smoke and toxic gas generated during a fire at high speed and then mixes it with water and discharges it to the outside, thereby preventing the inflow of smoke and toxic gas into a set air-control area to reduce human casualties. that can be minimized.

That is, smoke and toxic gases generated during a fire are quickly inhaled and then mixed with water and removed (除去/Removal). By preventing the spread of smoke in hallways and stairs, etc., it is possible to prevent the inflow of smoke and toxic gases, thereby minimizing human casualties.

Breathing in high-temperature smoke and toxic gas expanded by heat and increasing pressure, mixing with water to dissolve and dilution in water to remove and cool gas and liquid particulate toxic gas, Solid particulate-based soot, soot, ultra-fine dust, and ultra-fine dust are removed by physical adsorption.

The present invention is a subway station, underground facility and underground parking lot, various multi-use facilities, smoke control of various tunnels, industrial solid particulate system, ultra-fine various dust removal [粉塵除去], military gas and liquid particulate system, solid Particulate-based, various chemical and toxic gas detoxification facilities [除毒], commercial and hospital, agricultural-livestock sterilization and quarantine [防疫] equipment, gas and liquid particulate-based odor components are adsorbed and removed [吸着除去] ] can be applied to various fields such as

3 and 4 are diagrams for explaining the basic concept and operation method of an intake type smoke removal system (除煙 / Smoke Removal System) according to an embodiment of the present invention, and Figures 5 and 6 are an embodiment of the present invention It is a diagram showing in more detail the configuration of an intake type smoke control system according to an example.

As shown, the intake-type ventilation system 30 according to this embodiment includes a mixing conduit 43 , a plurality of vacuum generating multi-stage venturis 50 , a blocking guide plate 37 , a water supply unit, and a nozzle 51 . includes The smoke control system 30 of this embodiment is located between the residential space 13 and the ventilation area 15 in the building 10 .

In general, a vertical cavity (no reference numeral) is provided between the residential space 13 and the air-control area 15 of the building, and the ventilation system 30 of this embodiment may be installed in the cavity. The common district does not cut off the residential space 13 and the research area 15 . Naturally, people who were in the residential space 13 can move to the control area 15 .

In addition, the residential space 13 in the present description is a space in which people who use the building 10 are mainly located. For example, if the building is an office building, the residential space 13 is an office, conference room, or restaurant. In addition, if the building is an apartment or officetel, the residential space becomes the space within each household.

The control area 15 may be a hallway, a stair room, or other ancillary room used when evacuating a building in an emergency. The control area is a passage through which people in a building pass or evacuate, for example in the event of a fire, so smoke or toxic gas must not penetrate.

The intake-type ventilation system 30 according to the present embodiment is disposed outside the ventilation zone 15 and communicates with the ventilation zone 15 of each floor through the smoke damper 15a. For example, when a negative pressure is formed in the mixing conduit 43 , the air inside the control area 15 is sucked into the mixing conduit 43 . The smoke control damper 15a connects the outside and the inside of the smoke control area 15 .

In the end, the intake type smoke control facility 30 of this embodiment is installed outside the air control area 15, and in the event of a fire, the gas flowing into the air control area is exhausted to the outside of the air control area to escape or evacuate through the air control area. will make it possible In the event of a fire, a person who has escaped from the residential space 13 can safely escape to the outside of the building by going to the control area 15 .

On the other hand, the mixing conduit 43 is a vertically extended pipe, and accommodates the vacuum generating multi-stage venturi 50 , the blocking guide plate 37 , and the water supply part, and water and gas ejected from the vacuum generating multi-stage venturi 50 . Send the mixture down to the bottom.

The water discharged from the mixing conduit 43 may be collected separately and treated as sewage, and in some cases, it may be collected in a separate water tank and then purified and reused for circulation. That is, the water discharged through the lower part of the mixing conduit 43 is separately collected and treated for sewage or collected in a water tank to purify the water. Circulate it to the recycling system to conserve water. The shape of the mixing conduit 43 can be changed at any time. In addition, the main water supply pipe 31 may be separately piped to the outside of the mixing conduit 43 .

The water supply unit supplies water to each vacuum generating multi-stage venturi 50 , and includes a water supply pump 39 , a main water supply pipe 31 , and a branch pipe 33 .

The water supply pump 39 pumps water supplied from the outside and sends it up through the main water supply pipe 31 . The water supplied from the outside may be fire water supplied from a fire engine or water stored in a separate water tank. Or you can use a constant.

The main water supply pipe 31 is a pipe extending vertically upward, and ascends to the top floor of the building. The branch pipe 33 is connected to the main water supply pipe 31 and is a pipe extending toward each vacuum generating multi-stage venturi 50 . Water moving upward through the main water supply pipe 31 is supplied to the vacuum generating multi-stage venturi 50 through the branch pipe 33 . The extended end of the branch pipe 33 reaches the center of the upper end of the vacuum generating multi-stage venturi 50 and is coupled with the nozzle 51 . The nozzle 51 is a nozzle with a built-in vortex inductor (Swirl), and high-speed jetting water in a spiral flow pattern (Vortex Effect Pattern), the water passing through the branch pipe 33, the first injection pipe to be described later ( 53) and blows downward at a high speed through the inlet (53a). As long as it can form a spiral streamline, the shape of the vortex derivative can be implemented in various ways.

The water sprayed into the vacuum generated multi-stage venturi 50 by the nozzle 51 is smoke or toxic gas dust, fine dust, soot, soot, various unburned combustible gases, heat generated during a fire by the action of negative pressure. Inhale high-temperature smoke and toxic gas with increased pressure, and mix with water to dissolve and dilution in water to remove toxic gas, solid particulate-based soot, soot, ultra-fine dust, Various ultrafine dusts, etc. in the industrial field are removed by physical adsorption, and they fall to the lower part in a mixed state with water. Hydrogen cyanide (HCN) and hydrogen fluoride (HF) are infinitely soluble in water, hydrogen chloride (HCl) is very soluble in water, phosgene (COCl2), sulfurous acid gas (SO2), nitrogen dioxide (NO2) ), carbon dioxide (CO2), etc. are easily soluble in water.

On the other hand, the vacuum generating multi-stage venturi 50 passes the water supplied through the branch pipe 33 , and generates a negative pressure according to the venturi effect while the water passes, thereby sucking in the gas inside the control area 15 . It plays a role of mixing the inhaled gas with water and discharging it. That is, as shown in FIG. 5 , the gas inside the air removal area 15 is extracted in the direction of the arrow e, mixed with water, and then sent down to the bottom.

In addition, in the present embodiment, the vacuum generation multi-stage venturi 50 is applied in parallel by three for each layer. The number of applications of the multi-stage vacuum generating venturi 50 for each layer may vary.

The blocking guide plate 37 is a plate-shaped member installed between the vacuum generating multi-stage venturi 50 positioned up and down, for example, water sprayed downward from the upper vacuum generating multi-stage venturi to the lower vacuum generating multi-stage venturi. prevent hitting The water that has passed through the vacuum generation multi-stage venturi 50 collides with the blocking guide plate 37 and then flows in the direction of the arrow g in FIG. 5 and then falls.

Another function of the blocking guide plate 37 is to induce the gas drawn through the smoke control damper 15a, so that the gas smoothly moves to the inlet portion, that is, the upper end of the vacuum generating multi-stage venturi 50 . In other words, it is to guide the drawn gas to be quickly sucked into the vacuum generating multi-stage venturi 50 without being dispersed to the upper part. The structure of the blocking guide plate 37 can be varied as long as it can perform this role.

7A to 7C are diagrams for explaining the structure of the vacuum generating multi-stage venturi 50 shown in FIG. 5 .

As shown, the vacuum generation multi-stage venturi 50 has a triple structure of the first injection pipe 53 , the second injection pipe 55 , and the venturi casing 57 . According to an embodiment, the venturi casing may be manufactured in quadruple or more.

The first injection pipe 53 is a cylindrical duct having an inlet 53a at an upper end and an outlet 53e at a lower end, and a nozzle 51 is fixed at the upper end. The water sprayed from the nozzle 51 goes down through the inlet 53a of the first injection pipe 53 . A plurality of mixing blades 53b are formed on the lower side of the first injection pipe 53 .

The mixing blade 53b collides with the water descending to the bottom, and acts so that the water is uniformly mixed with the gas. The gas is a gas introduced through the inlet 53a by the negative pressure formed in the vacuum generating multi-stage venturi 50 .

The mixing blade 53b is a portion formed by cutting the lower portion of the first injection pipe 53 at equal intervals and in parallel in the longitudinal direction, and then constantly folding inward. The water flowing through the first injection pipe 53 has a spiral flow pattern (Vortex Effect Pattern) in a state of being mixed with the gas after colliding with the mixing wing 53b.

The second injection pipe 55 is a duct for accommodating the first injection pipe 53 therein. The length of the second injection pipe 55 is approximately twice the length of the first injection pipe 53 . However, the length of the second injection pipe 55 may vary. The interval between the inward surface of the second injection pipe 55 and the outer peripheral surface of the first injection pipe 53 is maintained by the connecting strut 54 . The connecting struts 54 support the second injection pipe 55 at regular intervals in the circumferential direction of the first injection pipe 53 .

An inlet (55c) is provided at the upper end of the second injection pipe (55), and an outlet (55e) is provided at the lower end of the second injection pipe (55). The inlet 55c is a passage through which the surrounding gas is sucked in. In addition, the outlet part 55e is a passage for mixing and discharging the gas introduced through the inlet 55c and the gas mixture water (a fluid in which water and gas are mixed) ejected from the first injection pipe.

A plurality of mixing blades (55b) are also formed at the lower end of the second injection pipe (55). The mixing blade 55b is a portion formed by cutting the lower portion of the second injection pipe 55 at regular intervals in the longitudinal direction and then folding the incised portion inward. The mixture of gas and water passing through the second injection pipe 55 collides with the mixing blade 55b and is mixed once again.

The venturi casing 57 accommodates the first and

second injection pipes

53 and 55 and guides the water sprayed through the first and second injection pipes downward, and the diameter expands as it goes down. has

The venturi casing 57 is composed of a fixed tube 58 and a rotating tube 59 . The fixed pipe 58 is a duct fixed to the second injection pipe 55 through the connecting strut 56 , and the rotating pipe 59 is a downwardly expanding duct that is rotatably mounted to the lower end of the fixed pipe 58 .

An inlet 57a for inhaling gas is provided at the upper end of the fixed tube 58 , and a support portion 58a is formed at the lower end of the fixed tube 58 . The support portion 58a is a portion that supports the rotation tube 59 so as to be axially rotatable, and is formed by bending the lower end of the fixed tube 58 . The support portion 58a has a predetermined cross-sectional shape along the circumferential direction of the fixing tube 58 and provides a receiving groove 58b open to the inside.

The rotary tube 59 is a duct whose lower end has an enlarged diameter compared to the upper end, and has a bent insertion end 59a at the upper end. The bent insertion end portion 59a is a portion in which the upper end of the rotary tube is bent outward, and is inserted and supported in the receiving groove 58b. In addition, the bent insertion end (59a) is slidable in the circumferential direction in a state accommodated in the receiving groove (58b).

In particular, a bearing 59e is mounted on the upper and lower portions of the bent insertion end portion 59a. The bearing 59e serves to reduce friction between the bent insertion end 59a and the receiving groove 58b. The rotary tube 59 smoothly rotates in a state supported by the support portion 58a by the action of the bearing 59e.

In addition, the impeller blade (59g) is installed inside the rotating tube (59). The impeller blade 59g is a spirally arranged blade, and it collides with the sprayed water, receives kinetic energy from the water, and serves to rotate the rotating tube 59 in the direction of the arrow k.

In particular, the water sprayed from the nozzle 51 rapidly turns into water vapor according to the high heat of smoke and toxic gas, and its volume at 1 atm, 100°C is about 1,700 times, at 260°C, 2,400 times, and at 650°C, 4,200 times. Abnormally vaporizes and expands.

In the event of a fire, high-temperature smoke and toxic gases continuously rise to the upper floors of the indoor space and gather to increase the pressure of the upper floors. If a certain critical point is reached within minutes, it is ignited by radiant heat, causing a flashover phenomenon, and the fire spreads further to the surroundings. The temperature of the upper layer of high-temperature smoke and toxic gas can rise by more than 600~900℃ by radiant heat.

If the volume of the fluid passing through the flow field increases instantaneously due to high-temperature heat, the flow rate tends to increase. Therefore, a high-speed fluid, that is, a mixed fluid with a complex mixture of water vapor, gas, and water, is , it is possible to further amplify the suction power by rapidly lowering the internal pressure of the vacuum generating multi-stage venturi 50, which can induce vaporization expansion at a temperature lower than 100 ° C in a state where the internal pressure is lower than 1 atm, and the pressure This is because, in this low state, the vaporization expansion rate becomes larger, further increasing the injection flow rate.

As a result, high-speed fluid injection is made inside the venturi due to the vaporization and expansion of the mixed fluid, so that the suction power for sucking in smoke and toxic gas is greatly amplified. This is a principle in which gas generated during a fire is sucked into the vacuum generating multi-stage venturi 50 .

By the action of the vacuum generating multi-stage venturi 50, in the gas passing through the vacuum generating multi-stage venturi 50 in the ventilation facility of this embodiment, the liquid particulate-based toxic gas is dissolved or diluted in water, and the solid particulate-based gas is dissolved or diluted in water. Soot, soot, and ultrafine dust are physically adsorbed by water, and hot heat and expanded water vapor are cooled by water.

The gas produced during a fire is a substance produced when combustibles burn, and is a complex mixture of high-temperature, very sticky solid particles, liquid tar-like droplet particles, and immaterial vapor and gaseous molecules. The gas flows into the lower part of the mixing conduit 43 in a dissolved or diluted state in water and is discharged to the outside.

As mentioned above, although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications are possible by those of ordinary skill within the scope of the technical spirit of the present invention.

Claims

By evacuating the gas flowing into the air-removal area to the outside of the air-removal area,

a vacuum-generating multi-stage venturi for passing water provided from the outside, generating a negative pressure according to the venturi effect while the water passes, sucking in the gas inside the venturi, and discharging the sucked gas by mixing it with water;

a water supply unit for supplying water to the vacuum generation multi-stage venturi;

Having a nozzle for spraying the water supplied through the water supply into the vacuum generating multi-stage venturi,

Intake type smoke control system.
According to claim 1,

The vacuum generation multi-stage venturi,

It is installed in the common area that communicates with the manufacturing area of each floor through the passageway,

water supply;

A water pump for pumping water, a main water supply pipe for guiding the water pumped by the water pump to the vacuum generating multi-stage venturi side, a branch pipe connected to the main water supply pipe and extending toward the inlet side of the vacuum generating multi-stage venturi and connected to the nozzle ,

Intake type smoke control system.
3. The method of claim 2,

A plurality of the vacuum generating multi-stage venturi is vertically spaced apart,

Between each vacuum generating multi-stage venturi, a blocking guide plate is provided to prevent the water sprayed from the upper vacuum generating multi-stage venturi from hitting the lower vacuum generating multi-stage venturi,

Intake type smoke control system.
4. The method of claim 3,

A mixing conduit extending vertically and accommodating the vacuum generating multi-stage venturi and blocking guide plate, and further including a mixing conduit for guiding the water and gas mixture ejected from the vacuum generating multi-stage venturi to the lower side,

Intake type smoke control system.
According to claim 1,

The vacuum generation multi-stage venturi;

an injection pipe having the nozzle at the upper end and jetting water sprayed from the nozzle downward;

It surrounds the injection pipe and guides the water sprayed through the injection pipe downward, which includes a venturi casing of a shape that expands in diameter as it goes down.

Intake type smoke control system.
6. The method of claim 5,

The injection pipe;

A first injection pipe coupled to the nozzle and having an inlet for receiving gas and water at the same time, and an outlet for discharging water mixed with gas;

A second injection pipe having an inlet for inhaling gas and an outlet for discharging by mixing the inflow gas and the gas mixture water ejected from the first injection pipe as accommodating the first injection pipe,

At the exit of the 1st and 2nd injection pipes,

A mixing blade that collides with the introduced water and gas to mix water and gas is formed,

Intake type smoke control system.
7. The method of claim 6,

The venturi casing is;

A fixed pipe accommodating the second injection pipe and having an inlet for inhaling gas at the upper end thereof;

A rotating tube that is rotatably installed at the lower end of the fixed tube;

It is located on the inside of the rotary tube, and collides with the sprayed water, including an impeller blade that receives kinetic energy from the water to rotate the rotary tube,

Intake type smoke control system.
8. The method of claim 7,

At the lower end of the fixed tube, a receiving groove extending in the circumferential direction and having a predetermined cross-sectional shape is formed along the circumferential direction,

At the upper end of the rotary tube, a bent insertion end that is inserted and supported in the receiving groove and is slidable in the circumferential direction while being inserted into the receiving groove is formed,

Intake type smoke control system.
9. The method of claim 8,

A non-lubricating solid lubricating coating or ring-type bearing is further installed between the bent insertion end and the receiving groove,

Intake type smoke control system.
5. The method of claim 4,

Further equipped with a water pump for recycling the water discharged through the mixing conduit,

Intake type smoke control system.