A smoke prevention and exhaust system and method for expanding antechamber

Abstract

The present invention discloses an expanded front room smoke prevention and exhaust system, wherein a sliding door is installed on one side of the transition area near the stairwell, exhaust fans are installed on both sides of the middle of the corridor area, overflow holes are provided between the transition area and the stairwell, retractable air blowing mechanisms are fixedly installed on both sides of the corridor area near the transition area, a towel storage box is installed in the transition area, and a twisting wire mechanism is installed on one side of the transition area near the fire door. The exhaust fan is used to exhaust air from the corridor area, thereby reducing the smoke concentration in the corridor area when a fire occurs. A retractable air blowing mechanism is installed in the corridor area, which can change the blowing angle and blow the smoke away from the transition area when blowing, creating a safe passage, thereby facilitating disaster personnel to enter the transition area. Since the overflow holes are provided between the transition area and the stairwell, a certain pressure is ensured in the transition area to prevent smoke from entering. By providing a sliding door, the sliding door can be opened horizontally, making it convenient for disaster personnel to enter the stairwell.

Description

Technical Field

[0001] The present invention relates to the field of building safety technology, and more particularly to a system and method for expanding antechamber smoke prevention and exhaust. Background Art

[0002] Currently, smoke control in high-rise building fires primarily utilizes a positive pressure ventilation system. This involves mechanically pressurizing air in stairwells and elevator lobby areas to increase pressure in these areas, while natural or mechanical smoke exhaust is used in corridors and other areas. This prevents smoke from spreading to these areas for a limited period of time, aiding escape. However, during evacuation, the lobby door is opened, allowing a large amount of positive pressure air to enter the fire, further spreading the fire and inevitably causing secondary fire hazards caused by the smoke control and exhaust system. This also easily leads to chaotic airflow near the lobby door, significantly reducing visibility. Due to the large area of ​​the lobby door, the pressure differential on both sides requires a significant force to push it open. This makes it difficult for vulnerable groups, such as the elderly, infirm, children, and patients, to open the lobby fire door during evacuation, resulting in reduced safety. Conventional fans are installed in corridors to blow air from the inside of the corridor, creating a safe passageway that keeps smoke away from the lobby. However, since the fan is fixed in position, the effectiveness of creating a safe passageway is limited. Summary of the Invention

[0003] The object of the present invention is to provide a system and method for enlarging antechamber smoke prevention and exhaust to overcome the defects of the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A smoke prevention and exhaust system for an expanded front room includes a wall, in which a corridor area and a stairwell are sequentially arranged, a transition area is provided between the corridor area and the stairwell, a fire door is installed on the side of the transition area close to the corridor area, a sliding door is installed on the side of the transition area close to the stairwell, exhaust fans are installed on both sides of the middle of the corridor area, the exhaust fans are used to discharge the air in the corridor area, overflow holes are provided in the transition area and the stairwell, a telescopic hair dryer mechanism is fixedly installed on both sides of the corridor area close to the transition area, the telescopic hair dryer mechanism is connected to a first air inlet device, the first air inlet device blows air to the corridor area through the telescopic hair dryer mechanism, a temperature sensor is installed in the corridor area, a towel storage box is installed in the transition area, a twisting wire mechanism is installed on the side of the transition area close to the fire door, the twisting wire mechanism is used to open the fire door, and a second air inlet device is installed on both sides of the stairwell, the second air inlet device is used to blow air to the stairwell.

[0006] Furthermore, the telescopic hair dryer mechanism includes a telescopic cylinder, an air outlet box and two electric push rods. The telescopic cylinder is fixedly installed on the inner side of the corridor area. One end of the telescopic cylinder is connected to the first air inlet device through the air outlet. The air outlet box is fixedly installed on the other end of the telescopic cylinder. The air outlet box is provided with an inclined portion on the side away from the transition zone. The inclined portion is provided with an inclined air outlet. Protruding plates are fixedly installed on both sides of the telescopic cylinder. The two electric push rods are respectively fixedly installed on the two sides of the telescopic cylinder, and the piston shafts of the electric push rods are fixedly connected to the corresponding protruding plates.

[0007] Furthermore, the first air inlet device and the second air inlet device are both axial flow fans.

[0008] Furthermore, the first air inlet device is fixedly installed outside the corridor area, a box body is installed outside the first air inlet device, an air inlet is opened at the outer end of the box body, an arc-shaped wind hood is fixedly installed at the air inlet position at the outer end of the box body, and a horizontal air duct connected to the air inlet is provided on the side of the arc-shaped wind hood away from the exhaust fan position.

[0009] Furthermore, the wire twisting mechanism includes a protection box, a wire twisting drum, a rotating shaft and a pull rope. The protection box is fixedly installed on the inner side of the transition zone, the wire twisting drum is rotatably installed in the protection box, the wire twisting drum is rotated by a motor, the pull rope is wrapped around the surface of the wire twisting drum, one end of the pull rope extends out of the protection box and is fixedly connected to the open end of the fire door, the rotating shaft is rotatably installed in the transition zone, and the pulling rope is in rolling contact with the rotating shaft.

[0010] Furthermore, a handle is fixedly installed on the side of the opening end of the fire door close to the corridor area, and a touch pressure switch is fixedly installed on the inside of the handle. The touch pressure switch controls the start of the motor of the stranded drum through a temperature sensor and PLC.

[0011] Furthermore, the towel storage box includes a box body, which is fixedly installed in the transition area. An opening is provided at the upper end of one side of the box body. Multiple towels are placed inside the box body. The upper and lower ends of the box body are respectively connected with a solenoid valve and a water outlet pipe. The solenoid valve is connected to the water inlet pipe. The temperature sensor controls the start of the solenoid valve through the PLC.

[0012] Furthermore, an emergency power supply module is installed in the box, and the emergency power supply module is used to supply power to the motor.

[0013] The present invention also provides a method for expanding antechamber smoke prevention and exhaust, comprising using any of the above-mentioned expanded antechamber smoke prevention and exhaust systems, and comprising the following steps:

[0014] S1. Construct a transition area between the corridor area and the stairwell;

[0015] S2. Install a towel storage box in the transition area and connect it to an external water supply pipe;

[0016] S3. Install temperature sensors, exhaust fans, primary air inlet devices, and telescopic air blower mechanisms in the corridor area, and install twisting mechanisms on fire doors;

[0017] S4. Install a second air inlet device in the stairwell;

[0018] S5. When the fire spreads to the corridor area, the exhaust fan can exhaust the smoke, and the telescopic blower mechanism can extend the air to move the smoke away from the transition area;

[0019] S6, the temperature sensor detects that the temperature in the corridor area rises, and the twisting mechanism can help people open the fire door;

[0020] S7. The second air inlet device continuously pressurizes the stairwell and transition area to prevent smoke from entering.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] Exhaust fans are installed on both sides of the middle of the corridor area. The exhaust fans are used to exhaust the air in the corridor area, thereby reducing the smoke concentration in the corridor area when a fire occurs. A telescopic hair blowing mechanism is installed in the corridor area, which can change the blowing angle. When blowing, it can keep the smoke away from the transition area, opening up a safe passage, making it convenient for disaster personnel to enter the transition area. Since overflow holes are opened between the transition area and the stairwell, the pressure in the stairwell can be transmitted to the transition area, thereby ensuring that there is a certain pressure in the transition area to prevent smoke from entering. A twisting wire mechanism is installed on the side of the transition area near the fire door. The twisting wire mechanism is used to open the fire door, thereby reducing the difficulty of opening the fire door. Since the pressure in the stairwell is relatively high, a sliding door is set up. The sliding door opens horizontally, which makes it convenient for disaster personnel to enter the stairwell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of the expanded front room smoke prevention and exhaust system of the present invention;

[0025] Figure 2 This is a structural diagram of the telescopic hair dryer mechanism of the present invention;

[0026] Figure 3 is a cross-sectional view of the towel storage box of the present invention;

[0027] Figure 4 It is a structural diagram of the stranding mechanism of the present invention;

[0028] Figure 5 It is a structural diagram of the fire door of the present invention.

[0029] In the figure: 1 wall, 11 corridor area, 12 stairwell, 13 transition area, 14 fire door, 141 handle, 142 touch switch, 15 sliding door, 16 overflow hole, 17 fire source area, 18 air vent, 2 exhaust fan, 3 first air inlet device, 31 box body, 32 axial flow fan, 33 air inlet, 34 curved wind hood, 35 horizontal air duct, 4 telescopic hair dryer mechanism, 41 telescopic cylinder, 42 air outlet box, 43 protruding plate, 44 electric push rod, 45 inclined portion, 46 inclined air vent, 5 second air inlet device, 6 towel storage box, 61 box body, 62 opening, 63 towel, 64 solenoid valve, 65 water inlet pipe, 66 water outlet pipe, 7 twisting mechanism, 71 protection box, 72 twisting drum, 73 rotating shaft, 74 pull rope, 75 emergency power supply module, 8 temperature sensor. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0031] See Figure 1-Figure 5As shown, the present invention provides an expanded front room smoke prevention and exhaust system, including a wall 1, in which a corridor area 11 and a stairwell 12 are sequentially arranged, a transition area 13 is provided between the corridor area 11 and the stairwell 12, a fire door 14 is installed on the side of the transition area 13 close to the corridor area 11, and a sliding door 15 is installed on the side of the transition area 13 close to the stairwell 12, exhaust fans 2 are installed on both sides of the middle part of the corridor area 11, the exhaust fans 2 are used to discharge the air in the corridor area 11, so as to reduce the smoke concentration in the corridor area 11 when a fire occurs, overflow holes 16 are provided in the transition area 13 and the stairwell 12, and a telescopic blower mechanism 4 is fixedly installed on both sides of the corridor area 11 close to the transition area 13, the telescopic blower mechanism 4 is connected to the first air inlet device 3, and the first air inlet device 3 blows air to the corridor area 11 through the telescopic blower mechanism 4, and the telescopic blower mechanism 4 is connected to the first air inlet device 3. The blower mechanism 4 can change the blowing angle, and can keep the smoke away from the transition zone 13 when blowing, so as to facilitate the disaster personnel to enter the transition zone 13. A temperature sensor 8 is installed in the corridor area 11, and a towel storage box 6 is installed in the transition zone 13. A twisting wire mechanism 7 is installed on the side of the transition zone 13 close to the fire door 1, and the twisting wire mechanism 7 is used to open the fire door 14. A second air inlet device 5 is installed on both sides of the stairwell 12, and the second air inlet device 5 is used to blow air into the stairwell 12. Since the transition zone 13 and the stairwell 12 are provided with overflow holes 16, the pressure of the stairwell 12 can be transmitted to the transition zone 13, thereby ensuring that the transition zone 13 has a certain pressure to prevent smoke from entering. Since the pressure in the stairwell 12 is relatively high, a sliding door 16 is provided, and the sliding door 16 is opened horizontally, which can facilitate the disaster personnel to enter the stairwell 12.

[0032] Furthermore, in order to realize that the telescopic hair-drying mechanism 4 can change the direction of blowing air, in this embodiment, the telescopic hair-drying mechanism 4 includes a telescopic cylinder 41, an air outlet box 42 and two electric push rods 44. The telescopic cylinder 41 is fixedly installed on the inner side of the corridor area 11, and one end of the telescopic cylinder 41 is connected to the first air inlet device 3 through the air outlet 18. The air outlet box 42 is fixedly installed on the other end of the telescopic cylinder 41. The air outlet box 42 is provided with an inclined portion 45 on the side away from the transition area 13. The inclined portion 45 is provided with an inclined air outlet 46. Both sides of the telescopic cylinder 41 are fixedly installed with protruding plates 43. The two electric push rods 44 are respectively fixedly installed at the two sides of the telescopic cylinder 41. The piston shafts of the electric push rods 44 are fixedly connected to the corresponding protruding plates 43. When a fire occurs, as shown in FIG. Figure 1 The fire source area 17 is in the corridor area 11. By starting the electric push rod 44, the electric push rod 44 can push out the telescopic cylinder 41. At this time, the air outlet box 42 can approach the middle of the corridor area 11. The first air inlet device 3 blows air to the air outlet box 42. The wind from the air outlet box 42 can blow obliquely toward the middle of the corridor area 11, thereby opening up a safe passage in the corridor area 11 to ensure that personnel can quickly enter the transition area 13 from the corridor area 11.

[0033] Furthermore, in this embodiment, the first air inlet device 3 and the second air inlet device 5 are both axial flow fans.

[0034] In this embodiment, the first air inlet device 3 is fixedly installed outside the corridor area 11, and a box body 31 is installed outside the first air inlet device 3. An air inlet 33 is opened at the outer end of the box body 31, and an arc-shaped wind cover 34 is fixedly installed at the outer end of the box body 31 at the position of the air inlet 33. A horizontal air duct 35 connected to the air inlet 33 is provided on the side of the arc-shaped wind cover 34 away from the position of the exhaust fan 2 to avoid the inhalation of smoke discharged by the exhaust fan 2.

[0035] In this embodiment, the wire twisting mechanism 7 includes a protection box 71, a wire twisting drum 72, a rotating shaft 73 and a pull rope 74. The protection box 71 is fixedly installed on the inner side of the transition zone 13, and the wire twisting drum 72 is rotatably installed in the protection box 71. The wire twisting drum 72 is rotated by a motor. The pull rope 74 is wound around the surface of the wire twisting drum 72. One end of the pull rope 74 extends out of the protection box 71 and is fixedly connected to the open end of the fire door 14. The rotating shaft 73 is rotatably installed in the transition zone 13, and the pull rope 74 is in rolling contact with the rotating shaft 73.

[0036] Furthermore, in order to prevent the fire door 14 from opening when no one enters the transition area 13, in this embodiment, a handle 141 is fixedly installed on the side of the opening end of the fire door 14 close to the corridor area 11, and a touch-pressure switch 142 is fixedly installed on the inside of the handle 141. The touch-pressure switch 142 controls the start of the motor of the wire drum 72 through the temperature sensor 8 and the PLC.

[0037] In order to further reduce the impact of smoke and dust on personnel, in this embodiment, the towel storage box 6 includes a box body 61, which is fixedly installed in the transition zone 13. An opening 62 is provided at the upper end of one side of the box body 61. A plurality of towels 65 are placed inside the box body 61. The upper and lower ends of the box body 61 are respectively connected with a solenoid valve 64 and a water outlet pipe 65. The solenoid valve 64 is connected to the water inlet pipe 65. The temperature sensor 8 controls the start of the solenoid valve 64 through the PLC. When a fire occurs, the solenoid valve 64 is started. At this time, the towel 65 can be wetted, and people can take out the wet towel from the towel storage box 6 to cover their mouths and noses.

[0038] In this embodiment, an emergency power supply module 75 is installed in the box 61, and the emergency power supply module 75 is used to supply power to the motor.

[0039] The present invention provides a method for expanding antechamber smoke prevention and exhaust, comprising the following steps:

[0040] Step S1, constructing a transition area 13 between the corridor area 11 and the stairwell 12;

[0041] Step S2: Install the towel storage box 6 in the transition area 13 and connect it to an external water supply pipe;

[0042] Step S3: Install the temperature sensor 8, the exhaust fan 2, the first air inlet device 3, and the telescopic air blower mechanism 4 in the corridor area 11, and install the twisting mechanism 7 on the fire door 14;

[0043] Step S4: Install the second air inlet device 5 in the stairwell 12;

[0044] Step S5: When the fire spreads to the corridor area 11, the exhaust fan 2 can exhaust the smoke, and the telescopic blower mechanism 4 extends to blow the smoke away from the transition area 13;

[0045] Step S6: The temperature sensor 8 detects that the temperature of the corridor area 11 increases, and the twisting mechanism 7 can help people open the fire door 14;

[0046] Step S7: The second air inlet device 3 continues to pressurize the stairwell 13 and the transition area 13 to prevent smoke from entering.

[0047] Exhaust fans are installed on both sides of the middle of the corridor area. The exhaust fans are used to exhaust the air in the corridor area, thereby reducing the smoke concentration in the corridor area when a fire occurs. A telescopic hair blowing mechanism is installed in the corridor area, which can change the blowing angle. When blowing, it can keep the smoke away from the transition area, opening up a safe passage, making it convenient for disaster personnel to enter the transition area. Since overflow holes are opened between the transition area and the stairwell, the pressure in the stairwell can be transmitted to the transition area, thereby ensuring that there is a certain pressure in the transition area to prevent smoke from entering. A twisting wire mechanism is installed on the side of the transition area near the fire door. The twisting wire mechanism is used to open the fire door, thereby reducing the difficulty of opening the fire door. Since the pressure in the stairwell is relatively high, a sliding door is set up. The sliding door opens horizontally, which makes it convenient for disaster personnel to enter the stairwell.

[0048] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various changes or modifications within the scope of the appended claims. As long as they do not exceed the scope of protection described in the claims of the present invention, they should be within the scope of protection of the present invention.

Claims

1. An expanded front room smoke prevention and exhaust system, comprising a wall, a corridor area and a stairwell arranged in sequence within the wall, characterized in that: A transition area is provided between the corridor area and the stairwell, a fire door is installed on the side of the transition area close to the corridor area, a sliding door is installed on the side of the transition area close to the stairwell, exhaust fans are installed on both sides of the middle of the corridor area, the exhaust fans are used to discharge the air in the corridor area, overflow holes are provided in the transition area and the stairwell, a telescopic hair dryer mechanism is fixedly installed on both sides of the corridor area close to the transition area, the telescopic hair dryer mechanism is connected to the first air inlet device, the first air inlet device blows air to the corridor area through the telescopic hair dryer mechanism, a temperature sensor is installed in the corridor area, a towel storage box is installed in the transition area, and the transition area close to the fire door is provided. A twisting wire mechanism is installed at the side position, which is used to open the fire door. A second air inlet device is installed on both sides of the stairwell, and the second air inlet device is used to blow air into the stairwell; the telescopic blowing mechanism includes a telescopic cylinder, an air outlet box and two electric push rods. The telescopic cylinder is fixedly installed on the inner side of the corridor area, and one end of the telescopic cylinder is connected to the first air inlet device through the air outlet. The air outlet box is fixedly installed on the other end of the telescopic cylinder. An inclined portion is provided on the side of the air outlet box away from the transition area, and an inclined air outlet is provided on the inclined portion. Protruding plates are fixedly installed on both sides of the telescopic cylinder, and the two electric push rods are respectively fixedly installed at the positions on both sides of the telescopic cylinder. , the piston shaft of the electric push rod is fixedly connected to the corresponding protruding plate; the first air inlet device is fixedly installed outside the corridor area, and a box body is installed outside the first air inlet device, and an air inlet is opened at the outer end of the box body. An arc-shaped wind hood is fixedly installed at the outer end of the box body at the air inlet position, and a horizontal air duct connected to the air inlet is provided on the side of the arc-shaped wind hood away from the exhaust fan position; the twisting mechanism includes a protection box, a twisting drum, a rotating shaft and a pull rope, the protection box is fixedly installed on the inner side of the transition area, the twisting drum is rotatably installed in the protection box, and the twisting drum is rotated by the motor, and the pull rope is wrapped around the surface of the twisting drum, and one end of the pull rope extends out between the protection box and the fireproof The opening end of the door is fixedly connected, the rotating shaft is rotatably installed in the transition area, and the pull rope is in rolling contact with the rotating shaft; the opening end of the fire door is fixedly installed with a handle on the side close to the corridor area, and a touch pressure switch is fixedly installed on the inside of the handle, and the touch pressure switch controls the start of the motor of the wire drum through the temperature sensor and PLC; the towel storage box includes a box body, the box body is fixedly installed in the transition area, an opening is provided at the upper end of one side of the box body, and multiple towels are placed inside the box body, and the upper and lower ends of the box body are respectively connected with a solenoid valve and a water outlet pipe, the solenoid valve is connected to the water inlet pipe, and the temperature sensor controls the start of the solenoid valve through the PLC.

2. The expanded front room smoke prevention and exhaust system according to claim 1, characterized in that: The first air inlet device and the second air inlet device are both axial flow fans.

3. The expanded front room smoke prevention and exhaust system according to claim 1, characterized in that: An emergency power supply module is installed in the box, and the emergency power supply module is used to supply power to the motor.

4. A method for preventing and exhausting smoke in an enlarged front room, comprising using the enlarged front room smoke exhaust system according to any one of claims 1 to 3, characterized in that: The method comprises the following steps: S1. Construct a transition area between the corridor area and the stairwell; S2. Install a towel storage box in the transition area and connect it to an external water supply pipe; S3. Install temperature sensors, exhaust fans, primary air inlet devices, and telescopic air blower mechanisms in the corridor area, and install twisting mechanisms on fire doors; S4. Install a second air inlet device in the stairwell; S5. When the fire spreads to the corridor area, the exhaust fan can exhaust the smoke, and the telescopic blower mechanism can extend the air to blow the smoke away from the transition area; S6, the temperature sensor detects that the temperature in the corridor area rises, and the twisting mechanism can help people open the fire door; S7. The second air inlet device continuously pressurizes the stairwell and transition area to prevent smoke from entering.

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