Fireproof rolling door with emergency falling mechanism
By employing an emergency landing mechanism and water curtain formation technology, the problem of smoke leakage during the closing process of fireproof rolling shutters has been solved, achieving efficient smoke isolation and personnel evacuation, and improving the safety performance of fireproof rolling shutters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DINGGU SPECIAL DOORS & WINDOWS CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-29
AI Technical Summary
During the closing process, high-temperature toxic fumes leak out in large quantities through the bottom of the fireproof roller shutter door, affecting the safety of evacuation routes, especially in densely populated areas, where prolonged closing time poses a safety hazard.
An emergency lowering mechanism is adopted. When toxic smoke is detected by the smoke detection control unit, the roller is controlled to rotate and lower the shutter body to form a water curtain to block the smoke. A water pump system is used to form a water curtain in front of the door frame. Combined with water-absorbing expansion pads and elastic sealing strips, the gaps are sealed to ensure that the smoke does not leak.
It effectively blocks toxic fumes, improves the safety of evacuation routes, reduces fumes leakage, and ensures the smooth escape of personnel.
Smart Images
Figure CN224300763U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the field of roller shutter technology, and specifically refers to a fireproof roller shutter door with an emergency landing mechanism. Background technology:
[0002] Fireproof roller shutters are special doors mainly used to isolate fire, prevent the spread of toxic fumes, and ensure the safety of personnel evacuation routes during a fire.
[0003] In related technologies, when a fire-resistant roller shutter door is closing, it stops descending after reaching 1.8m and waits for people to evacuate before closing after a preset delay. However, in densely populated areas such as shopping malls and exhibition halls, if the fire-resistant roller shutter door waits too long to close, high-temperature toxic fumes will leak in large quantities through the bottom of the roller shutter door, affecting the safety of evacuation routes. Summary of the Invention:
[0004] The purpose of this invention is to provide a fireproof roller shutter with an emergency landing mechanism to solve the technical problems mentioned in the background art.
[0005] This utility model is implemented as follows:
[0006] A fireproof roller shutter door with an emergency lowering mechanism includes a functional compartment on the door frame, guide rails symmetrically arranged on both sides of the door frame, a roller rotatably connected to the functional compartment, and a roller shutter body wound around the inner end of the roller. The outer ends of the roller shutter body slide along the corresponding guide rails. The functional compartment is provided with a water outlet pipe with a water outlet opening. Water from the water outlet forms a water curtain in front of the door frame. A drain pipe is provided on the ground, located directly below the water outlet. The functional compartment is provided with a smoke detection control unit, which controls the roller to rotate and lower the roller shutter body. An evacuation opening is provided on the roller shutter body, and an evacuation door covering the evacuation opening is provided on the roller shutter body.
[0007] By adopting the above technical solution, when the smoke detection control unit detects toxic fumes, it controls the roller to rotate and lower the shutter body, causing it to descend directly to the bottom. Water from the outlet pipe forms a water curtain in front of the door frame to block the smoke. Personnel then open the evacuation door and escape through the evacuation exit to the evacuation passage located behind the shutter body. The water curtain forming a smoke barrier in front of the door frame reduces the leakage of toxic fumes into the escape passage through the evacuation exit during escape, thus improving the smoke-blocking effect.
[0008] Preferably, the outlet pipe is connected to a water pump, which drives water into the outlet pipe. The water pump is equipped with a water pump controller for controlling the start and stop of the water pump. The water pump controller is associated with the smoke detection control unit. When the smoke detection control unit is triggered, the smoke detection control unit controls the water pump to start through the water pump controller. A liquid level sensor is installed in the drain pipe to detect the liquid level in the drain pipe. When the liquid level in the drain pipe is higher than the preset value of the liquid level sensor, the liquid level sensor sends a shutdown signal to the water pump controller, and the water pump controller controls the water pump to shut down.
[0009] By adopting the above technical solution, when a fire occurs, the collapse of indoor items can easily block the drain pipe. When the drain pipe is blocked, water accumulates inside. When the water level in the drain pipe exceeds the preset value of the liquid level sensor, the liquid level sensor sends a shutdown signal to the water pump controller. The water pump controller controls the water pump to stop working, preventing water from overflowing the drain pipe and contacting exposed wires, or from accumulating water on the ground and affecting people's walking.
[0010] Preferably, the water outlet pipe includes a connecting pipe disposed in the functional compartment and a plurality of nozzles disposed on the connecting pipe, the water outlet being located at the nozzle, and the water mist sprayed from the plurality of nozzles forming a water curtain in front of the door frame.
[0011] By adopting the above technical solution, water mist is formed at the spray head, which helps to improve the smoke blocking effect and reduce the resistance when people pass through the water curtain.
[0012] Preferably, water-absorbing and expanding pads are provided on both sides of the roller blind body, and the water-absorbing and expanding pads seal the gap between the roller blind body and the guide rail after absorbing water and expanding.
[0013] By adopting the above technical solution, part of the water mist sprayed from the nozzle falls onto the water-absorbing expansion pad. After the water-absorbing expansion pad absorbs water and expands, it blocks the gap between the roller shutter body and the guide rail, reducing the amount of toxic fumes that can enter the evacuation passage behind the door frame through the gap.
[0014] Preferably, the evacuation door includes a curtain on the shutter body, a roller on the curtain, and a handle rotatably connected to the roller. The handle is slidably connected to the shutter body. The end of the curtain away from the roller is located above the evacuation door and fixed to the shutter body. The roller is used to wind the curtain.
[0015] By adopting the above technical solution, when the roller shutter body is lowered to the bottom, the handle is moved upward to expose the evacuation opening. During the opening of the door curtain, since the door curtain is always rolled up on the roller together with the roller shutter body, the door curtain has a tendency to roll up. The door curtain is rolled up on the roller and it is convenient to open the evacuation opening.
[0016] Preferably, the door curtain is provided with an elastic sealing strip, which is located on both sides of the evacuation door.
[0017] By adopting the above technical solution and installing an elastic sealing strip on the door curtain, the escape of toxic fumes through the gap between the door curtain and the roller shutter body is reduced when the door curtain covers the evacuation opening.
[0018] Preferably, the elastic sealing strip has an air cavity, and the gas in the air cavity expands at high temperature to fill the gap between the roller shutter body and the door curtain.
[0019] By adopting the above technical solution, as time goes by, the temperature at the ignition point gradually increases. As the temperature rises, the gas in the gas cavity expands, causing the elastic sealing strip to expand and further seal the gap between the roller shutter body and the door curtain. As the gas expands, the hardness of the elastic seal increases, causing the door curtain to tend to unfold and cover the escape opening.
[0020] Preferably, the lower edge of the roller shutter body is provided with a positioning groove for the handle to be inserted.
[0021] By adopting the above technical solution, the handle is inserted into the positioning groove, which facilitates the fixing of the door curtain.
[0022] Preferably, the handle is provided with a silicone sleeve.
[0023] By adopting the above technical solution, the silicone protective cover has excellent heat insulation properties, making it less likely to burn your hands when opening the door curtain.
[0024] The outstanding advantages of this utility model compared to the prior art are:
[0025] 1. This utility model forms a water curtain in front of the door frame to block smoke, reducing the leakage of toxic smoke into the escape passage through the evacuation opening during the escape process, which helps to improve the smoke blocking effect.
[0026] 2. In this utility model, the expansion of gas in the air chamber causes the elastic sealing strip to expand, further sealing the gap between the roller shutter body and the door curtain. As the gas expands, the hardness of the elastic seal increases, making the door curtain tend to unfold and cover the escape opening.
[0027] 3. When the roller blind body is lowered to the bottom, the handle is moved upward to expose the evacuation opening. During the opening of the door curtain, since the door curtain is always rolled up on the roller together with the roller blind body, the door curtain has a tendency to roll up. The door curtain is rolled up on the roller and it is convenient to open the evacuation opening. Attached image description:
[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0029] Figure 2This is a partial structural schematic diagram of the present invention, mainly showing the shape of the nozzle outlet;
[0030] Figure 3 This is a partial structural diagram of the present invention, mainly showing the position of the water-absorbing expansion pad;
[0031] Figure 4 This is a partial structural diagram of the present invention, mainly showing the state of the evacuation door when the evacuation exit is opened;
[0032] Figure 5 This is a schematic diagram of the structure of this utility model partially cut open at the elastic sealing gasket, mainly showing the air cavity.
[0033] Instruction manual diagram reference numerals: 1. Functional compartment; 11. Drive motor; 2. Guide rail; 21. Opening; 22. Water-absorbing expansion pad; 3. Roller; 4. Roller shutter body; 41. Evacuation outlet; 42. Positioning groove; 5. Water outlet pipe; 51. Connecting pipe; 52. Nozzle; 521. Water outlet; 53. Water pump; 531. Water pump controller; 6. Smoke detection control unit; 61. Smoke sensor; 62. Control element; 7. Drain pipe; 71. Liquid level sensor; 8. Evacuation door; 81. Door curtain; 811. Elastic sealing strip; 8111. Air chamber; 82. Roller roller; 83. Handle; 831. Silicone heat insulation pad. Detailed implementation method:
[0034] The present invention will be further described below with reference to specific embodiments:
[0035] This application discloses a fireproof roller shutter door with an emergency landing mechanism, see [link to relevant documentation]. Figure 1 and Figure 2 The roller shutter includes a functional compartment 1, guide rails 2, rollers 3, and a roller shutter body 4. The functional compartment 1 and guide rails 2 are mounted on the door frame, with the functional compartment 1 located above and fixed to the door frame. Guide rails 2 are located on the inner walls of both sides of the door frame, below the functional compartment 1, and are vertically oriented. The rollers 3 are rotatably connected to the functional compartment 1, with their axis of rotation horizontal. The rollers 3 are positioned between the two guide rails 2. The inner end of the roller shutter body 4 is wound around the roller 3, and the two outer edges of the roller shutter body 4 are respectively engaged with and slidably connected to the guide rails 2. A drive motor 11 is installed on the functional compartment 1, and the output shaft of the drive motor 11 is coaxially connected to the roller 3. The drive motor 11 drives the roller to reciprocate, used to unwind or rewind the roller shutter body 4.
[0036] See Figure 1 and Figure 2Functional compartment 1 is equipped with a water outlet pipe 5, which is located on the side of functional compartment 1 away from the door frame. Water from the water outlet pipe 5 forms a water curtain in front of the door frame, covering the front of the door frame and blocking toxic fumes in front of the door frame. In this application, "front of the door frame" refers to the side of the door frame away from the evacuation route.
[0037] See Figure 1 and Figure 2 The water outlet pipe 5 includes a connecting pipe 51 and several nozzles 52. The connecting pipe 51 is fixedly installed on the functional compartment 1. The nozzles 52 are located below the connecting pipe 51. The distribution direction of the several nozzles 52 is parallel to the rotation axis of the roller 3. The several nozzles 52 are provided with water outlets 521. The water outlets 521 face downward and are arranged to gradually expand downward along the direction parallel to the rotation axis of the roller 3, so that the sprayed water curtain diffuses downward, increases the coverage area of the water curtain, and blocks toxic fumes through the fine mist water curtain, which is conducive to improving the blocking efficiency and reducing the resistance when passing through the water curtain.
[0038] See Figure 1 and Figure 2 The connecting pipe 51 is connected to the water pump 53. When the water pump 53 operates, water enters the connecting pipe 51 and is then sprayed out from the outlet 521 of the nozzle 52 through the connecting pipe 51. The water inlet of the water pump 53 is connected to an external water pipe.
[0039] See Figure 1 and Figure 3 The guide rail 2 has several openings 21 to prevent it from deforming under high temperatures. Water-absorbing expansion pads 22 are installed on both sides of the roller shutter body 4. Water mist sprayed from the nozzle 52 enters the guide rail 2 through the openings 21. When the roller shutter is unfolded, the water-absorbing expansion pads 22 are located inside the guide rail 2. After absorbing water, the water-absorbing expansion pads 22 expand and block the gap between the roller shutter body 4 and the guide rail 2, reducing the amount of toxic fumes entering the evacuation channel through the gap.
[0040] See Figure 1 A smoke detection control unit 6 is installed on the door frame. The smoke detection control unit 6 includes a smoke sensor 61 and a control element 62. The smoke sensor 61 is used to detect the indoor smoke concentration, and the control element 62 is used to control the operation of the drive motor 11. When the smoke sensor 61 is triggered, the smoke sensor 61 outputs an operating signal. The control element 62 receives the operating signal from the smoke sensor 61 and controls the drive motor 11 to unroll the shutter body 4. After the shutter body 4 is lowered to the bottom, the drive motor 11 stops working.
[0041] See Figure 1 A water pump controller 531 is installed on the water pump 53. The water pump controller 531 is associated with the smoke sensor 61. The water pump controller 531 receives the working signal output by the smoke sensor 61 and controls the water pump 53 to work in front of the door frame to form a water curtain.
[0042] See Figure 1 and Figure 2 A drain pipe 7 is embedded in the ground, located directly below the water outlet 521. A liquid level sensor 71 is installed inside the drain pipe 7, and is connected to a water pump controller 531. The liquid level sensor 71 has a preset threshold liquid level. When the liquid level in the drain pipe 7 exceeds the threshold liquid level in the liquid level sensor 71, the liquid level sensor 71 outputs a shut-off signal to the water pump controller 531. Upon receiving the shut-off signal, the water pump controller 531 controls the water pump 53 to stop working, and the sprinkler head 52 stops discharging water. In the water pump controller 531, the shut-off signal from the liquid level sensor 71 has a higher processing priority than the operating signal from the smoke sensor 61.
[0043] See Figure 3 and Figure 4 The roller shutter body 4 has an evacuation opening 41 with a height of 1.8m. An evacuation door 8 is installed on the roller shutter body 4. The evacuation door 8 is made of the same material as the roller shutter body 4. The evacuation door 8 rolls up to open and rolls down to close. The evacuation door 8 includes a curtain 81, a roller 82, and a handle 83. The roller 82 is connected to the lower end of the curtain 81, and the curtain 81 is wound on the roller 82. The handle 83 is installed on the roller 82 and is rotatably connected to the roller 82. At the connection between the roller 82 and the handle 83, the handle 83 is slidably connected to the roller shutter body 4. When the handle 83 moves upward, it drives the roller 82 to move upward, thereby opening the curtain 81 and opening the evacuation opening 41. The curtain 81 itself has a tendency to rotate and roll up. When the curtain 81 is raised, the roller 82 rolls up the curtain 81. People inside the room can enter the evacuation passage through evacuation exit 41. After entering the escape passage, they can pull down the handle 83 to lower the curtain 81 and close the evacuation exit 41.
[0044] See Figure 3 and Figure 4 The roller shutter body 4 has a positioning groove 42 for the handle 83 to be inserted into. After the handle 83 is inserted into the positioning groove 42, it is fixed. A silicone heat insulation pad 831 is fitted around the outer ring of the handle 83. When the handle 83 is inserted into the positioning groove 42, the silicone heat insulation pad 831 is located inside the positioning groove 42. When the handle 83 is inserted into the positioning groove 42, the handle 83 is located below the roller 82.
[0045] See Figure 4 and Figure 5An elastic sealing strip 811 is fixed at one end of the door curtain 81 near the roller shutter body 4. The elastic sealing strip 811 is located on opposite sides of the door frame. An air cavity 8111 is opened in the elastic sealing strip 8111. The air cavity 8111 is filled with gas. When the temperature has not risen, the gas has not expanded, and the elastic sealing strip 811 is easy to bend. When people escape through the evacuation exit 41, the temperature on the side of the door frame away from the evacuation passage rises. The gas in the air cavity 8111 expands, which increases the hardness of the elastic sealing strip 811 and makes it tend to unfold. This causes the door curtain 81 to tend to unfold. When people leave, if the door curtain 81 is not closed, the door curtain 81 automatically unfolds and covers the escape exit.
[0046] The curtain 81 can be opened from the inside, allowing those who are leaving to exit through it.
[0047] The implementation principle of this application embodiment is as follows: a water curtain is formed in front of the door frame by the nozzle 52 to slow down the diffusion speed of toxic fumes to the door frame, and the gaps are sealed by the water-absorbing expansion pad 22 and the elastic sealing strip 811 to reduce the leakage of toxic fumes into the escape passage, which is conducive to improving the smoke blocking effect of the roller shutter door.
[0048] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.
Claims
1. A fireproof roller shutter door with an emergency landing mechanism, comprising a functional compartment (1) on a door frame, guide rails (2) symmetrically arranged on both sides of the door frame, a roller (3) rotatably connected to the functional compartment (1), and a roller shutter body (4) with its inner end wound around the roller (3), wherein the outer ends of the roller shutter body (4) slide along the corresponding guide rails (2), characterized in that: The functional compartment (1) is provided with a water outlet pipe (5), and the water outlet pipe (5) is provided with a water outlet (521). Water from the water outlet (521) forms a water curtain in front of the door frame. A drain pipe (7) is provided on the ground. The drain pipe (7) is located directly below the water outlet (521). The functional compartment (1) is provided with a smoke detection control unit (6). The smoke detection control unit (6) controls the roller (3) to rotate so that the roller shutter body (4) is lowered. An evacuation opening (41) is provided on the roller shutter body (4). An evacuation door (8) is provided on the roller shutter body (4) to cover the evacuation opening (41).
2. A fireproof rolling shutter door with an emergency landing mechanism according to claim 1, characterized in that: The outlet pipe (5) is connected to the water pump (53), which drives water into the outlet pipe (5). The water pump (53) is equipped with a water pump controller (531) for controlling the start and stop of the water pump (53). The water pump controller (531) is associated with the smoke detection control unit (6). When the smoke detection control unit (6) is triggered, the smoke detection control unit (6) controls the water pump (53) to start through the water pump controller (531). The drain pipe (7) is equipped with a liquid level sensor (71) for detecting the liquid level in the drain pipe (7). When the liquid level in the drain pipe (7) is higher than the threshold of the liquid level sensor (71), the liquid level sensor (71) sends a shut-off signal to the water pump controller (531), and the water pump controller (531) controls the water pump (53) to shut down.
3. A fireproof roller shutter door with an emergency landing mechanism according to claim 1, characterized in that: The water outlet pipe (5) includes a connecting pipe (51) provided in the functional compartment (1) and a plurality of nozzles (52) provided on the connecting pipe (51). The water outlet (521) is located at the nozzle (52), and the water mist sprayed by the plurality of nozzles (52) forms a water curtain in front of the door frame.
4. A fireproof roller shutter door with an emergency landing mechanism according to claim 3, characterized in that: Water-absorbing expansion pads (22) are provided on both sides of the roller blind body (4). After the water-absorbing expansion pads (22) absorb water and expand, they seal the gap between the roller blind body (4) and the guide rail (2).
5. A fireproof roller shutter door with an emergency landing mechanism according to claim 1, characterized in that: The evacuation door (8) includes a curtain (81) on the shutter body (4), a roller (82) on the curtain (81), and a handle (83) rotatably connected to the roller (82). The handle (83) is slidably connected to the shutter body (4) for lifting and lowering. One end of the curtain (81) away from the roller (82) is located above the evacuation door (8) and fixed to the shutter body (4). The roller (82) is used to wind the curtain (81).
6. A fireproof roller shutter door with an emergency landing mechanism according to claim 5, characterized in that: The door curtain (81) is provided with an elastic sealing strip (811), which is located on both sides of the evacuation door (8).
7. A fireproof roller shutter door with an emergency landing mechanism according to claim 6, characterized in that: An air cavity (8111) is provided inside the elastic sealing strip (8111). The gas in the air cavity (8111) expands at high temperature and fills the gap between the roller shutter body (4) and the door curtain (81).
8. A fireproof rolling shutter door with an emergency landing mechanism according to claim 6, characterized in that: The lower edge of the roller shutter body (4) is provided with a positioning groove (42) for the handle (83) to be inserted.
9. A fireproof roller shutter door with an emergency landing mechanism according to claim 6, characterized in that: The handle (83) is provided with a silicone heat insulation pad (831).