Smoke removal system installed in building entrance / exit passages

Abstract

The present invention relates to a smoke removal system for installation in a building's entrance / exit passageway. The system includes a door case with an intake and an exhaust port, a door nozzle installed inside the door case for spraying water supplied from the outside, and a negative pressure inductor that creates negative pressure by the Venturi effect as the water sprayed from the door nozzle passes through, drawing in gas around the door case through the intake port, mixing the gas with water, and then descending toward the exhaust port. The smoke removal system for installation in a building's entrance / exit passageway creates negative pressure during a fire, drawing in surrounding smoke and toxic gases, mixing them with water, and discharging them. This significantly reduces the concentration of smoke and toxic gases. It also ensures visibility and provides lighting during power outages, guiding rapid evacuation and minimizing casualties. It also maintains fire prevention functions, such as cooling fire doors and fire shutters to prevent thermal deformation and damage caused by flames, thereby preventing the spread of fire and maximizing evacuation time.

Description

[Technical Field]

[0001] The present invention relates to a smoke removal system installed at various entrances and exits inside a building, and more particularly to a smoke removal system installed at entrances and exits inside a building, which rapidly draws in smoke and toxic gases generated during a fire and removes them by mixing them with water to prevent the smoke from spreading and minimize the risk of death, and also to a smoke removal system installed at entrances and exits inside a building, which brightens emergency lighting and generates negative ions to efficiently remove dust. [Background technology]

[0002] In recent years, most buildings constructed are required to be equipped with various firefighting equipment that meets the standards set out in the strengthened Building Fire Service Act. Such firefighting-related equipment includes fire extinguishing equipment, smoke exhaust equipment, smoke removal (control) equipment, alarm equipment, evacuation equipment, firefighting water equipment, and firefighting-related equipment.

[0003] Needless to say, the basic purpose of firefighting equipment is to minimize damage to human life and property caused by fire, such as by detecting fires early, protecting or evacuating people in buildings, and enabling firefighting efforts in their early stages.

[0004] Of the various types of equipment mentioned above, smoke removal (control) equipment is a type of fire extinguishing equipment that detects smoke that occurs in the early stages of a building fire, exhausts smoke from the fire room (living room), and prevents smoke from spreading to escape routes such as corridors and staircases, protecting residents from smoke and allowing them to evacuate safely. At the same time, it controls the smoke (Smoke Control) and exhausts it outside (Fire Smoke Ventilation) so that firefighters can carry out their firefighting activities.

[0005] The majority of human casualties from fires are due to suffocation caused by smoke (toxic gases, soot, and smoke) that spreads within buildings due to fire currents, rather than the direct effects of the heat of the fire. The reason that toxic smoke generated during a fire is so deadly is because it spreads very quickly.

[0006] Toxic gases released during a fire can prevent the transfer of oxygen in the blood and, if inhaled, can cause death within minutes. Toxic gases contain large amounts of highly toxic substances such as carbon monoxide (CO), hydrogen chloride (HCl), and hydrogen cyanide (HCN), causing convulsions, shock, respiratory damage, difficulty breathing, fainting, dizziness, respiratory paralysis, immobility, bloody sputum and excessive coughing, pulmonary edema, cardiac arrest, mental confusion, corneal blisters, and elevated body temperature. This is why it is so important to quickly remove smoke in a fire to minimize loss of life.

[0007] On the other hand, fire doors inside buildings are installed at the entrances and exits of buildings to prevent the spread of fire or delay the ignition. For example, if a space is divided by walls inside a building, a fire door is installed at the entrance that leads to that space.

[0008] Although fire doors are made of non-combustible materials, they continue to heat up unless the fire is completely extinguished, and eventually the heat will cause them to deform or crack, and they will lose their fire protection function at some point. In addition, a person can be burned by simply touching a fire door, as it is so hot from the flames. If a flammable material happens to be near a fire door, the heat from the fire door can cause the flammable material to ignite.

[0009] There is a demand for technology that can efficiently remove toxic gases generated during a fire, reducing the concentration of toxic substances in the room to at least a breathable level, while also cooling the fire doors to maintain their functionality. Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been made to solve the above problems, and aims to provide a smoke removal system to be installed in building entrance / exit passageways that not only significantly reduces the concentration of smoke and toxic gases in the event of a fire, but also ensures visibility and provides lighting even during a power outage, thereby guiding rapid evacuation and minimizing loss of life.

[0011] Another object of the present invention is to provide a smoke removal system that can be installed in building entrance / exit passageways, which cools fire doors and fire shutters to prevent thermal deformation and damage caused by flames, thereby stably preventing the spread of fire and properly maintaining fire prevention functions such as maximizing evacuation time. [Means for solving the problem]

[0013] Furthermore, as a means for solving the problem of achieving the above object, the smoke removal system installed in a building entrance / exit passage of the present invention is a system that is fixed to an entrance / exit passage in a building and supports an entrance / exit door so that it can be opened and closed, At the top Air intake and at the bottom The outlet Prepared Frame case and The aforementioned Inside the frame case and the upper part The water is supplied from outside. Downwards a flame nozzle for spraying; The aforementioned Water is sprayed from the flame nozzle, and negative pressure is generated by the Venturi effect while the water passes through. The aforementioned Gas around the frame case The aforementioned It draws in air through the intake port and mixes the gas with water. The aforementioned A door frame equipped with a negative pressure inductor that lowers the pressure toward the exhaust port. is provided do.

[0014] And the entrance door is At the top Air intake and at the bottom The outlet Prepared Door cases and The aforementioned Door case Located inside and above , water supplied from outside Downwards A spraying door nozzle, The aforementioned Water is sprayed from the door nozzle, and negative pressure is generated by the Venturi effect while the water passes through. The aforementioned Gas around the door case The aforementioned It draws in air through the intake port and mixes the gas with water. The aforementioned Lower it to the outlet side Negative Pressure Inductor and 、 The door body has:

[0015] In addition, the door body and The aforementioned On the door frame, The aforementioned When the door is closed, the water The aforementioned A first and second closure seal are provided which provide a passageway to feed the door nozzle.

[0016] At the same time, the door case and The aforementioned The frame case has The aforementioned No. 1 Hermetic seal and The first seal is provided with a second sealing seal. Installation hole and The second mounting holes are formed respectively, The aforementioned The first seal is in the form of a ring, The aforementioned a fixing ring that fits into the first installation hole; The aforementioned and a resilient blocking piece formed integrally with the inner circumferential surface of the fixing ring, which is normally in a closed state and which expands and opens when water pressure is applied. The aforementioned The second seal takes the form of a ring. The aforementioned a fixing ring that fits into the second installation hole; The aforementioned Integrated into the inner surface of the fixing ring formed in The valve has an elastic blocking piece that is normally in a closed state and is opened by the application of water pressure.

[0017] In addition, as a means for solving the problems to achieve the above object, the smoke removal system installed in the building entrance / exit passage of the present invention comprises a door case having an intake port and an exhaust port, and a plurality of through-type receiving holes at the upper end; The aforementioned Located inside the door case, The aforementioned The water is sprayed downward through the receiving hole, creating negative pressure through the Venturi effect. The aforementioned Gas around the door case The aforementioned It draws in air through the intake port and mixes the gas with water. The aforementioned a door body having a negative pressure inductor that guides the air toward the exhaust port; and a device that supports the door body so that it can be opened and closed, the device having an air intake port and an exhaust port; The aforementioned a frame case having a jet passage that corresponds one-to-one with the receiving hole when the door body is closed; The aforementionedIt is installed inside the frame case and uses water supplied from the outside. The aforementioned Water is sprayed into the outlet passage The aforementioned Through the receiving hall The aforementioned and a door frame having a nozzle for passing a negative pressure inducer therethrough.

[0018] Also, the receiving hole and The aforementioned The jetting passages are each fitted with a sealing cap which is separated and removed by the pressure of the water when the water is jetted.

[0019] The smoke removal system installed in a building entrance / exit passageway of the present invention, which is a means for solving the problems to achieve the above object, comprises: a mixing housing that is installed above a fire shutter in a building and has an intake port and an exhaust port; The aforementioned a plurality of nozzles that are built into the mixing housing and spray water supplied from an external source; The aforementioned Located below the nozzle, The aforementioned The device allows water sprayed from a nozzle to pass through, generating negative pressure by the Venturi effect while the water passes through, The aforementioned The mixing housing is provided with a negative pressure inductor that draws in gas around the mixing housing through an intake port, mixes the drawn-in gas with water, and discharges the gas.

[0020] The negative pressure inducer includes a jet passage whose inner diameter expands along the direction of water flow; The aforementioned The injection passage is open to the side, The aforementioned and a plurality of intake passages that allow the negative pressure formed in the injection passage to act on the outside.

[0021] In addition, a mixing spacer is further installed inside the door case to hit the sprayed water and mix the water with gas. [Effects of the Invention]

[0023] The smoke removal system installed in the building entrance / exit passage of the present invention creates negative pressure in the event of a fire, sucks in surrounding smoke and toxic gases, mixes them with water and discharges them, thereby significantly reducing the concentration of smoke and toxic gases, as well as ensuring visibility and providing lighting even during a power outage, thereby guiding rapid evacuation and minimizing loss of life.

[0024] In addition, the system cools the fire doors and fire shutters to prevent thermal deformation and damage caused by flames, thereby preventing the spread of fire and ensuring maximum evacuation time, thereby properly maintaining fire prevention functions.

[0025] In particular, when applied to the entrance and exit passage of a toilet in a building, it temporarily prevents heat and gas from entering the toilet, and at this time, when the ventilation fan is switched to an air supply fan, it allows the toilet to be used as an emergency evacuation space. [Brief explanation of the drawings]

[0026] [Figure 1] Figure 1(a) is a block diagram showing the overall configuration of a smoke removal system installed in a building entrance / exit passageway according to the present invention, and Figure 1(b) is a diagram for explaining an example of use of a smoke removal system installed in a building entrance / exit passageway according to the present invention. [Figure 2] 1 is a perspective view showing the external configuration of a fire door of a smoke removal system installed in a building entrance / exit passageway according to a first embodiment of the present invention. FIG. [Figure 3] FIG. 3 is an exploded perspective view of the door body shown in FIGS. 2(a) and 2(b). [Figure 4] FIG. 3 is a side cross-sectional view of the door body shown in FIGS. 2(a) and 2(b). [Figure 5] FIG. 3 is a side cross-sectional view showing a modified example of the door body of FIG. 2(a). [Figure 6] 3A to 3C are side views schematically showing various configurations of negative pressure inductors applicable to the door body of FIG. 2. [Figure 7] 3A to 3C are side views schematically showing various configurations of negative pressure inductors applicable to the door body of FIG. 2. [Figure 8]3A to 3C are side views schematically showing various configurations of negative pressure inductors applicable to the door body of FIG. 2. [Figure 9] 3A to 3C are side views schematically showing various configurations of negative pressure inductors applicable to the door body of FIG. 2. [Figure 10] 3A to 3C are side views schematically showing various configurations of negative pressure inductors applicable to the door body of FIG. 2. [Figure 11] 3A to 3C are side views schematically showing various configurations of negative pressure inductors applicable to the door body of FIG. 2. [Figure 12] FIG. 10 is a diagram showing a modified example of a fire door applied to the smoke removal system installed in the building entrance / exit passageway according to the first embodiment of the present invention. [Figure 13] 13 is a diagram for explaining the action of the fixed hermetic seal and the moving hermetic seal shown in FIG. 12. FIG. [Figure 14] FIG. 10 is a diagram showing another modified example of the fire door in the smoke removal system installed in the building entrance / exit passageway according to the first embodiment of the present invention. [Figure 15] FIG. 10 is a perspective view showing the exterior of a smoke removal system installed in a building entrance / exit passageway according to a second embodiment of the present invention. [Figure 16] FIG. 16 is a diagram schematically illustrating the internal configuration of the case shown in FIG. [Figure 17] FIG. 17 is a cross-sectional view showing the internal structure of the multistage negative pressure inductor of FIG. [Figure 18] FIG. 10 is a diagram showing a modified example of the smoke removal system installed in the building entrance / exit passageway according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

[0028] The smoke removal system installed in building entrance / exit passages of the present invention is applied to fire doors and fire shutters installed in building entrance / exit passages. That is, the fire doors themselves have the smoke removal ability to rapidly draw in smoke and toxic gases generated in a fire, mix them with water, and then discharge them. In addition, the fire doors and fire shutters are prevented from being deformed or burned by the temperature of the flames, allowing them to perform their functions stably.

[0029] In this description, "an entrance / exit passageway within a building" means a passageway provided with an entrance / exit door or shutter.

[0030] Smoke and toxic gases generated during a fire are sucked in by the negative pressure created by the Venturi principle, and then mixed with water for removal. As mentioned above, the fire door itself has the ability to remove smoke, so it prevents smoke from spreading to the designated smoke removal zone, the fire room (living room), the hallway and staircases that are evacuation routes, minimizing the loss of life.

[0031] Of the high-temperature smoke and toxic gases that are generated during a fire, gaseous and liquid particulate toxic gases are removed and cooled by dissolution and dilution in water, while solid particulate soot, smoke, ultrafine dust, and ultrafine dust particles are removed by physical adsorption.

[0032] The present invention can be applied to a wide range of fields, including subway stations, underground facilities and underground parking lots, various multi-use facilities, tunnel smoke removal [smoke removal], industrial solid particulate ultrafine dust removal [dust removal], military gas and liquid particulate systems, solid particulate systems, various chemical and toxic gas detoxification equipment [detoxification], commercial and hospital, agricultural and livestock sterilization [sterilization] and disease prevention [epidemic prevention] equipment, and the adsorption and removal of malodorous components from gas and liquid particulate systems [adsorption and removal of malodorous components].

[0033] For convenience, the terms smoke and gas are used interchangeably in the present invention, and smoke and gas have the same meaning.

[0034] FIG. 1(a) is a block diagram showing the overall configuration of a smoke removal system installed in an entrance / exit passageway within a building according to the present invention.

[0035] As shown in the figure, the overall structure of the smoke removal system of the present invention includes a fire detector 11, a control unit 12, a valve 13, a small hydroelectric generator 15, an emergency lighting unit 16, a negative ion generator 17, and a smoke removal device 20.

[0036] Fire detectors 11 are installed in various places inside the building to detect fires, and when a fire occurs, transmit the detected information to a control unit 12.

[0037] The control unit 12 notifies people in the building that a fire has broken out in various ways, and at the same time controls the valve 13. That is, the control unit 12 opens the valve 13 so that firefighting water is supplied to the smoke remover 20.

[0038] The small hydroelectric generator 15 generates electricity by receiving the kinetic energy of firefighting water (hereinafter referred to as water) flowing through the valve 13 to the smoke remover 20. Even if the power to the entire building is cut off due to a fire, electricity can be generated as long as there is a supply of water.

[0039] The electricity generated by the small hydroelectric generator 15 is supplied to various power demand destinations, and is particularly applied to an emergency lighting unit 16 and an anion generator 17.

[0040] The emergency lighting unit 16 is an LED lamp that irradiates light into the room. A person in need of rescue can see the light from the emergency lighting unit 16 and find an escape route.

[0041] The negative ion generator 17 functions to capture and remove positively charged floating particles such as smoke, toxic gases, ultrafine dust, soot, and soot by combining with the positively charged fine particles and causing them to sink.

[0042] The smoke removal system 20 also includes a fire door 20A and a fire shutter 20B. The smoke removal system 20 sucks in the heat, smoke, toxic gases, ultrafine dust, soot, and other contaminants concentrated in the upper part of the fire area and mixes them with water to reduce the concentration of toxic substances, and goes a step further by cooling the fire door and fire shutter themselves to prevent physical deformation or damage.

[0043] Figure 1(b) is a reference diagram for explaining the hypothetical situation when the smoke removal system of this embodiment is applied to the entrance and exit of a restroom in a building. When the smoke removal system of this embodiment is applied to a restroom, evacuation can be performed for approximately more than one hour.

[0044] When a fire breaks out in a building, but quick evacuation to the outside of the building is difficult, people evacuate to another evacuation space within the building or to the toilet. When a person who has evacuated to the toilet presses the emergency bell, the control unit 12 is activated and the smoke removal operation is automatically performed according to the process described above. At this time, the ventilation fan in the toilet can be switched to an air supply fan to receive oxygen from outside. The toilet can be used as an emergency evacuation shelter. In this way, the toilet is designated as a separate evacuation space in order to secure more golden time in situations where quick evacuation is difficult.

[0045] FIG. 2(a) is a perspective view showing the external configuration of a fire door 20A in a smoke removal system installed in a building entrance / exit passageway according to a first embodiment of the present invention, and FIG. 2(b) is a perspective view showing the external configuration of the fire door 20A when people who are unable to escape through an emergency exit use a specific space such as a toilet as an emergency evacuation shelter.

[0046] FIG. 3 is an exploded perspective view of the door body 30 shown in FIG. 2, and FIG. 4 is a side cross-sectional view of the door body.

[0047] As shown in the figure, the fire door 20A in the smoke removal system 10 according to the first embodiment has a door body 30 and a door frame 50. The door body 30 is a door that is opened and closed by a user. The door frame 50 is a door frame that supports the door body 30 so that it can be opened and closed.

[0048] The door body 30 includes a door case 31, a door water supply pipe 35a, a door nozzle 35c, and a negative pressure inductor 35e.

[0049] The door case 31 has a rectangular plate shape like a typical entrance door and is equipped with a handle 33. The door case 31 is made of steel plate and provides a negative pressure space 31a inside. The negative pressure space 31a is a space where the negative pressure created by the negative pressure inductor 35e is maintained, and also serves as a mixing space where smoke and water are mixed.

[0050] An air intake 31c is formed at the upper end of the front panel 31b of the door case 31, and an exhaust port 31g is provided at the lower end of the rear panel 31f. The air intake 31c is a passage that guides smoke generated in the event of a fire into the negative pressure space 31a. The exhaust port 31g is a passage through which smoke cooled in the negative pressure space 31a and a mixture of water and smoke are discharged.

[0051] The front side is the side facing the space where the fire has broken out, and the rear side is the space where the fire will not spread.

[0052] 3, the intake port 31c is formed at the top of the front surface and the exhaust port 31g is located at the bottom of the rear surface, but depending on the embodiment, the intake port 31c can be formed at the top of both the front and rear surfaces. Similarly, the exhaust port 31g can be formed at the bottom of both the front and rear surfaces.

[0053] The door water supply pipe 35a is a horizontal pipe that guides water supplied from the outside into the door case 31. The door water supply pipe 35a is located behind the air intake 31c. The door nozzle 35c sprays the water that flows in through the door water supply pipe 35a downward in a vertical direction. The number of door nozzles 35c that can be used is variable.

[0054] The negative pressure inductor 35e is made by bending two iron plates into a round shape and arranging the bent parts facing each other, with a narrowed center. Water sprayed from the door nozzle 35c passes through the negative pressure inductor 35e and accelerates, generating negative pressure due to the Venturi effect. The Venturi effect is a common technique, so a detailed explanation is omitted.

[0055] The negative pressure created by the negative pressure inductor 35e acts on the outside of the door case 31, drawing in the surrounding smoke. The smoke around the fire door 20A is drawn into the door case 31 through the intake port 31c. The drawn-in smoke, mixed with water, descends and is discharged through the exhaust port 31g.

[0056] That is, smoke, toxic gases, dust particles, fine dust, soot, various unburned combustible gases, hot air, etc. generated during a fire are mixed with water inside the door case 31, and liquid particulate toxic gases are removed by dissolution and dilution in water, while solid particulate soot, soot, ultrafine dust, dust, etc. are removed by physical adsorption. For reference, water-soluble toxic gases generated during a fire, such as hydrogen cyanide (HCN) and hydrogen fluoride (HF), are almost infinitely soluble in water, hydrogen chloride (HCl) is very soluble in water, and phosgene (COCl2), sulfur dioxide (SO2), nitrogen dioxide (NO2), and carbon dioxide (CO2) are easily soluble in water.

[0057] A plurality of mixing spacers 36 are provided below the negative pressure inductor 35e. The mixing spacers 36 reinforce the strength of the door body 30 and also act to mix more vigorously with the descending mixture of water and smoke, ensuring that the water is mixed evenly with the smoke. In other words, toxic substances are effectively mixed well with the water and removed through physical adsorption, dilution, and dissolution. The number of mixing spacers 36 can be varied, and they may be arranged irregularly as shown in Figure 14.

[0058] FIG. 5 is a side cross-sectional view showing a modification of the door body of FIG.

[0059] 5, it can be seen that intake ports 31c and exhaust ports 31g are formed on both the upper and lower ends of the door case 31. The cross-sectional area of the intake and exhaust flow is expanded, allowing for the treatment of more smoke.

[0060] 6 to 11 are side views schematically showing the configuration of various negative pressure inductors 35e that can be applied to the door body of FIG.

[0061] 6(a) has a trapezoidal cross section and is fixed to the inward surfaces of the front plate 31b and the rear plate 31f. The door nozzle 35c is located in the upper part of the space between the negative pressure inductors 35e.

[0062] 6(b), negative pressure inductor 35e is fixed to the inward surface of front panel 31b. Door nozzle 35c sprays water in an oblique direction. The sprayed water passes between negative pressure inductor 35e and rear panel 31f and is discharged downward.

[0063] The negative pressure inductor 35e in Fig. 6(c) is fixed to the inward surface of the front panel 31b, as in Fig. 7. The door nozzle 35c is disposed adjacent to the rear panel 31f side and discharges water vertically downward.

[0064] 7(a) to 7(c) are diagrams showing a negative pressure inductor 35e having yet another structure.

[0065] 7(a) to 7(c) is characterized in that the door water supply pipe 35a is directly connected to the negative pressure inductor 35e, and the door nozzle 35c is provided in the negative pressure inductor 35e itself. Water supplied through the door water supply pipe 35a fills the inside of the negative pressure inductor 35e and is then sprayed out through the door nozzle 35c.

[0066] The water sprayed from the door nozzle 35c quickly turns into steam due to the high heat of the smoke and toxic gases, and its volume expands as it vaporizes, increasing by approximately 1,700 times at 1 atmosphere and 100°C, 2,400 times at 260°C, and more than 4,200 times at 650°C.

[0067] If the volume of the fluid passing through the flow field increases instantaneously, the flow velocity will increase, and the high-speed fluid, i.e., a complex mixture of steam, gas, and water, will generate a Venturi effect, rapidly reducing the internal pressure of the negative pressure space 31a and further amplifying the suction force. As a result, the mixed fluid (a mixture of smoke and water) vaporizes and expands, causing a high-speed fluid jet from the negative pressure inducer 35e, greatly amplifying the suction force that sucks in smoke and toxic gases.

[0068] 8 shows a negative pressure inductor 35e equipped with a reflector 35f and a support plate 35g. The reflector 35f is a component provided at the bottom of the negative pressure inductor 35e and collides with the water and smoke mixture that passes through the negative pressure inductor 35e. After colliding with the reflector 35f, the water and smoke pass through both ends of the reflector 35f in the width direction and are accelerated again. "Accelerated" means that a negative pressure is formed.

[0069] The support plate 35g is a plate-like member having a plurality of nozzle installation openings 35k. The door nozzles 35c are attached to the nozzle installation openings 35k. Additionally, an air intake 35h is provided at the lower width of the support plate 35g. The air intake 35h is a passage through which smoke drawn by negative pressure is sucked in.

[0070] 9, a gutter (drainage channel) 35m is further provided below the negative pressure inductor 35e. The gutter 35m is a water receiver that receives water that has passed through the negative pressure inductor 35e and guides it to the vertical pipe 35n. The vertical pipe 35n is a pipe that guides the water mixed with smoke to the vertical lower part and discharges it to the outside.

[0071] In addition, as shown in Fig. 10, only one negative pressure inductor 35e can be applied. This has been explained with reference to Fig. 6(b) and Fig. 6(c). Fig. 11 is a diagram showing a configuration in which a gutter 35m and a vertical pipe 35n are provided below the negative pressure inductor 35e of Fig. 10.

[0072] On the other hand, the door frame 50 is fixed to an entrance passageway within a building and supports the entrance door so that it can be opened and closed. The entrance door may be a general fire door or the door body 30 of the type shown in Figure 3.

[0073] The door frame 50 included in the smoke remover 20 of the first embodiment has the same smoke removal and cooling capabilities as the door body 30.

[0074] The door frame 50 includes a frame case 51 , a frame pipe 53 , a frame nozzle 52 , and a negative pressure inductor 55 .

[0075] The frame case 51 is, so to speak, a rectangular door frame. The above-mentioned entrance door and door body 30 are provided in the frame case 51 so as to be able to open and close.

[0076] The frame case 51 is made of steel plate and has a negative pressure space 51a as shown in Fig. 12. The negative pressure space 51a is a space where the negative pressure created by the negative pressure inductor 55 is maintained. An air intake 51e is formed at the upper end of the front surface of the frame case 51. The air intake 51e is a passage through which surrounding smoke flows into the negative pressure space 51a. In addition, an exhaust port (not shown) is formed at the lower end of the rear surface of the frame case 51. The exhaust port is a passage through which the mixture of water and smoke escapes.

[0077] The frame pipe 53 is a pipe that guides water supplied from the outside into the frame case 51 and is connected to the frame nozzle 52. The water supplied through the frame pipe 53 is sprayed downward through the frame nozzle 52.

[0078] The negative pressure inductor 55 passes the water injected through the frame nozzle 52, creating a negative pressure due to the Venturi effect. The negative pressure created by the negative pressure inductor 55 extends to the outside of the frame case 51, drawing smoke around the intake port 51e into the negative pressure space 51a.

[0079] The smoke that has flowed into the frame case 51 is removed in the same process as in the door body 30, and then discharged to the outside.

[0080] Fig. 12 is a diagram showing a modified example of the fire door 20A included in the smoke removal system installed in the building entrance / exit passage according to the first embodiment of the present invention. Fig. 13 is a diagram for explaining the action of the fixed sealing seal and the moving sealing seal shown in Fig. 12.

[0081] The fire door 20A in Fig. 12 is characterized by a combination of a door body 30 and a door frame 50. That is, the door body 30, which also has the ability to remove smoke, is joined to the door frame 50, which has the ability to remove smoke.

[0082] Hereinafter, the same reference numerals as those described above refer to the same components with the same functions.

[0083] As shown in the figure, a support shaft 31h is formed in the door case 31, and a shaft insertion hole 51c is provided in the frame case 51, into which the support shaft 31h is fitted.

[0084] The support shafts 31h are located at the upper and lower ends of the door case 31 as rotation axes of the door main body 30. Only the upper end support shaft 31h is shown in FIG. 12. It goes without saying that the support shafts at the upper and lower ends are located on the same central axis. The shaft insertion hole 51c is a hole that accommodates the support shaft 31h. By fitting the support shaft 31h into the shaft insertion hole 51c, the door main body 30 can rotate.

[0085] A branch pipe 53c is also provided inside the frame case 51. The branch pipe 53c is a pipe connected to the frame pipe 53 and has a second sealing seal 54 at its end. The branch pipe 53c is a guide pipe that guides a portion of the water supplied through the frame pipe 53 to the door water supply pipe 35a.

[0086] Meanwhile, the door body 30 and the door frame 50 are provided with a first sealing seal 32 and a second sealing seal 54 which interlock with each other when the door body is closed to provide a path through which water in the branch pipe 53c can move to the door water supply pipe 35a.

[0087] The first and second seals 32 and 54 are elastic members made of heat-resistant rubber and have the same shape. The first seal 32 is fixed to the end of the door water supply pipe 35a. The second seal 54 is fixed to the end of the branch pipe 53c.

[0088] The first hermetic seal 32 has a fixing ring 32a and an elastic blocking piece 32c. The fixing ring 32a is a ring-shaped member with a certain diameter and fits into the first seal installation hole 31m of the door case 31. The first seal installation hole 31m is a through hole for installing the fixing ring 32a.

[0089] The elastic blocking piece 32c is integrally formed on the inner peripheral surface of the fixing ring and is normally kept closed, but when water pressure is applied, it expands and opens as shown in Figure 13(c). Because the door water supply pipe 35a is blocked by the first sealing seal 32, external foreign objects cannot enter the door water supply pipe 35a.

[0090] The second seal 54 is made up of a fixed diameter fixing ring 54a and a resilient blocking piece 54c. The fixing ring 54a is detachably fitted into a second seal installation hole 51m formed in the frame case 51. The second seal installation hole 51m is a through hole provided for installing the fixing ring 54a.

[0091] The elastic blocking piece 54c is formed integrally with the inner peripheral surface of the fixing ring 54a, and is normally in a closed state, but when water pressure is applied, it expands and opens as shown in Figure 13(c). The branch pipe 53c is blocked by the second seal 54, so that foreign matter cannot enter from the outside.

[0092] 13(a) shows the door body 30 in an open state, with the first seal 32 and the second seal 54 spaced apart. The first seal 32 seals and protects the door water supply pipe 35a, and the second seal 54 seals and protects the branch pipe 53c.

[0093] When the door body 30 is closed in the above state, the first seal 32 moves toward the second seal 54 and they come into close contact with each other as shown in Figure 13(b). The fixing ring 32a of the first seal and the fixing ring 54a of the second seal come into close contact with each other, just like forming a single conduit.

[0094] If a fire breaks out in this state and water is supplied, some of the water will flow in the direction of arrow F, pushing and opening the elastic isolating pieces 32c and 54c, and then move to the door water supply pipe 35a. The elastic isolating pieces 32c and 54c expand due to the water pressure. The elastic isolating pieces 32c and 54c have elastic restoring properties and will return to their original position when the water pressure is removed.

[0095] FIG. 14 is a diagram showing another modified example of the fire door 20A in the smoke removal system installed in the building entrance / exit passageway according to the first embodiment of the present invention.

[0096] A fire door 20A shown in FIG. 14 is composed of an openable and closable door body 30 and a door frame 50 that supports the door body.

[0097] As described above, the door body 30 has the door case 31 and the negative pressure inductor 58. Of course, the door case 31 has an intake port 31c and an exhaust port 31g formed at the top and bottom ends of the front and rear surfaces thereof.

[0098] In particular, a plurality of through-type receiving holes 31k are formed at regular intervals at the upper end of the door case 31. The receiving holes 31k are through-type holes that allow the water sprayed from the frame nozzle 52 to pass downward, and are closed with a sealing cap 57. The sealing cap 57 receives the pressure of the water sprayed from the frame nozzle 52 and separates from the receiving holes 31k.

[0099] The negative pressure inductors 58 are roughly hexagonal members and are arranged on the left and right sides of the lower part of each receiving hole 31k. The water that passes through the receiving hole 31k passes between the negative pressure inductors 58. As the water passes through the negative pressure inductors 58, a negative pressure is created by the Venturi effect.

[0100] A plurality of mixing spacers 36 are fixed irregularly to the lower part of the negative pressure inductor 58. The mixing spacers 36 have been described above.

[0101] In addition, a frame pipe 53 is installed horizontally on the upper interior side of the door frame 50, and a plurality of frame nozzles 52 are provided on the frame pipe 53. The frame nozzles 52 spray water supplied through the frame pipe 53 downward.

[0102] Additionally, a plurality of jet passages 51g are formed in the door frame 50. The jet passages 51g are through-holes disposed above the receiving holes 31k and are closed by sealing caps 56. The inner diameter of the jet passages 51g is relatively smaller than the inner diameter of the receiving holes 31k. The sealing caps 56 are separated from the jet passages 51g by the pressure of the water jetted from the frame nozzle 52 and then drop downward together with the other sealing caps 57.

[0103] In the fire door 20A having the above-mentioned configuration, when water is supplied through the frame pipe 53, the water passes through the jet passage 51g and the receiving hole 31k, and then passes through the negative pressure inductors 58 inside the door case 31, creating a negative pressure.

[0104] Fig. 15 is a perspective view showing the exterior of a smoke removal system installed in a building entrance / exit passageway according to a second embodiment of the present invention, and Fig. 16 is a diagram showing the schematic internal structure of the case shown in Fig. 15. Also, Fig. 17 is a cross-sectional view showing the internal structure of the multi-stage negative pressure induction device shown in Fig. 16.

[0105] The smoke removal device 20 of the smoke removal system 10 according to the second embodiment is provided above a fire shutter 20B.

[0106] As is well known, fire shutters are installed when it is unavoidable that a fire-resistant wall or Class A fire door cannot be installed at the fire compartment line. Fire shutters are equipped with an opening and closing device (not shown) that can open and close the fire shutter electrically or manually, as well as smoke detectors and other detectors.

[0107] The smoke remover 20 comprises a mixing housing 61 , a frame pipe 53 , a plurality of nozzles 52 and a negative pressure inducer 63 .

[0108] The mixing housing 61 has a generally hexahedral shape and has an intake port 61a on the front surface and an exhaust port 61c on the bottom surface. The intake port 61a is a passage through which external smoke flows into the mixing housing 61 when negative pressure is created by the negative pressure inducer 63.

[0109] The exhaust port 61c is a hole through which water mixed with smoke escapes downward. The exhaust port 61c is located as close as possible to the fire shutter 20B so that the fire shutter 20B is cooled by the water.

[0110] The negative pressure inductor 63 allows the water discharged from the nozzle 62 to pass through and be ejected, and has an internal configuration shown in FIG.

[0111] 17, a jet passage 63b and a plurality of intake passages 63c are formed inside the negative pressure inductor 63. The jet passage 63b is a linear passage whose inner diameter expands along the direction of water flow. The intake passages 63c are holes that open to the side of the jet passage and allow the negative pressure generated inside the jet passage to act on the outside.

[0112] FIG. 18 is a diagram showing a modified example of the smoke removal system installed in the building entrance / exit passageway according to the second embodiment of the present invention.

[0113] As shown in the figure, the negative pressure inductor 63 is provided horizontally, and the intake port 61a is formed on the bottom surface of the mixing housing 61. The exhaust port 61c is opened in an inclined state toward the fire shutter 20B.

[0114] When water is supplied through the flame pipe 53, it passes through the nozzle 62 and the negative pressure inductor 63, hits the inclined guide surface 61e, and then flows downward along the fire shutter 20B. At the same time, external smoke passes upward through the intake port 61a and flows into the negative pressure inductor 63, where it is mixed with the water.

[0115] Although the present invention has been described in detail above through specific examples, the present invention is not limited to the above examples, and various modifications can be made by those skilled in the art within the scope of the technical concept of the present invention.

Claims

1. A device that supports an entrance door so that it can be opened and closed while being fixed to an entrance passageway inside a building, a frame case having an intake port at the top and an exhaust port at the bottom; a frame nozzle provided inside and at an upper portion of the frame case, for spraying water supplied from the outside downward; a negative pressure inducer that allows water injected from the frame nozzle to pass through, generates negative pressure by a Venturi effect while the water passes through, draws gas around the frame case through the intake port, mixes the drawn gas with water, and causes the gas to descend toward the exhaust port; A door frame including: A smoke removal system installed in building entrance and exit corridors.

2. The entrance door is a door case having an air intake at the top and an exhaust at the bottom; a door nozzle provided inside the door case at an upper portion thereof and spraying water supplied from the outside downward; a negative pressure inducer that allows the water sprayed from the door nozzle to pass through, generates negative pressure by a Venturi effect while the water passes through, draws in gas around the door case through the intake port, mixes the drawn gas with water, and causes the gas to descend toward the outlet port; A door body having The smoke removal system according to claim 1, wherein the smoke removal system is installed in an entrance / exit passageway within a building.

3. The door body and the door frame are provided with a first sealing seal and a second sealing seal that interlock with each other when the door body is closed to provide a path through which water can be supplied to the door nozzle. The smoke removal system installed in a building entrance / exit passageway according to claim 2.

4. The door case and the frame case are respectively formed with a first installation hole and a second installation hole in which the first sealing seal and the second sealing seal are provided; The first seal comprises: a ring-shaped fixing ring that fits into the first installation hole; and a resilient blocking piece that is integrally formed on the inner circumferential surface of the fixing ring, that is normally in a closed state, and that expands and opens when water pressure is applied; The second seal is The valve has a ring-shaped fixing ring that fits into the second installation hole, and an elastic blocking piece that is integrally formed on the inner peripheral surface of the fixing ring, that is normally in a closed state, and that expands and opens when water pressure is applied. The smoke removal system installed in a building entrance / exit passageway according to claim 3.

5. a door body including a door case having an intake port and an exhaust port and having a plurality of through-type receiving holes at an upper end thereof; and a negative pressure inductor provided inside the door case, which allows water ejected downward through the receiving holes to pass through, creates negative pressure by the Venturi effect, draws gas around the door case through the intake port, mixes the drawn gas with water, and guides the gas toward the exhaust port; a frame case for supporting the door body so that it can be opened and closed, the frame case having an intake port and an exhaust port, and having a jetting passage that corresponds one-to-one to the receiving hole when the door body is closed; and a door frame provided inside the frame case for jetting water supplied from the outside into the jetting passage so that the water passes through the receiving hole and the negative pressure inducer. A smoke removal system installed in building entrance and exit corridors.

6. The receiving hole and the ejection passage are respectively fitted with sealing caps which are separated and removed by the pressure of water when the water is ejected. The smoke removal system installed in a building entrance / exit passageway according to claim 5.

7. a mixing housing provided above an entrance / exit passageway or a fire shutter in a building and having an intake port and an exhaust port; a plurality of nozzles that are built into the mixing housing and spray water supplied from the outside; a negative pressure inducer that is provided below the nozzle and allows the water sprayed from the nozzle to pass through, generating negative pressure by the Venturi effect while the water passes through, drawing in gas around the mixing housing through the intake port, mixing the drawn-in gas with water, and discharging the mixed gas; A smoke removal system installed in building entrance and exit corridors.

8. The negative pressure inductor is an injection passage whose inner diameter expands along the direction of water flow; a plurality of intake passages that are open laterally to the injection passage and allow negative pressure formed within the injection passage to act on the outside; The smoke removal system installed in a building entrance / exit passageway according to claim 7.

9. A mixing spacer is further provided inside the door case to hit the sprayed water and mix the water with the gas. The smoke removal system installed in a building entrance / exit passageway according to any one of claims 2 to 6.

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