Stairway smoke exhaust structure for building fire protection engineering
By introducing a solar-powered smoke exhaust system into the fire escape stairwells, and utilizing the combined effect of smoke sensors and fan units, the problem of low efficiency in natural smoke exhaust has been solved, achieving efficient smoke removal and self-sufficiency in power, thus ensuring the safety of personnel on upper floors.
Patent Information
- Application Number
- CN202520967661.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-06-09
- Estimated Expiration
- 2035-05-16
AI Technical Summary
The existing fire escape staircases and walkways have low natural smoke exhaust efficiency, and smoke from the lower floors affects the safety of people on the upper floors.
The solar-powered smoke extraction system uses smoke sensors to detect smoke and control the fan unit to start. The smoke passes through louvers, flame-retardant core plates, filters, and the fan unit before entering the exhaust duct. The solar panels store electricity to power the fan unit and sensors.
It improves the smoke extraction efficiency of stairwells, prevents smoke from lower floors from affecting people on upper floors, and ensures that the power supply is not affected by fire.
Smart Images

Figure CN224340281U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire protection facilities technology, specifically to a smoke exhaust structure for stairwells in building fire protection facilities engineering. Background Technology
[0002] Fire protection facilities refer to fixed facilities such as automatic fire alarm systems, indoor fire hydrants, outdoor fire hydrants, and smoke exhaust mechanisms within buildings. Since the most common cause of death and injury in fires is smoke inhalation, smoke exhaust structures play a very important role in fires.
[0003] Fire escape stairwells are important escape routes in fire evacuation routes. However, the smoke exhaust windows used in current fire escape stairwells are generally natural smoke exhaust windows. This not only has low smoke exhaust efficiency, but also causes smoke from lower floors to affect people on upper floors.
[0004] In view of this, we propose a smoke exhaust structure for stairwells in building fire protection engineering. Utility Model Content
[0005] The purpose of this utility model is to provide a smoke exhaust structure for stairwells in building fire protection engineering, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a smoke exhaust structure for stairwells in a building fire protection facility, comprising a building wall, a window fixedly connected to the inner side of the building wall, a smoke exhaust mechanism provided at the top of the window, the smoke exhaust mechanism comprising a shell, an installation frame fixedly connected to the inner wall of the shell near the front, a solar panel fixedly connected to the front of the installation frame, an air inlet duct provided to the left side of the solar panel and fixedly connected to the installation frame, a fan unit provided behind the air inlet duct and fixedly located at the front of the installation frame, a heat insulation board provided behind the solar panel and fixedly connected to the installation frame, a heat insulation box provided behind the heat insulation board and fixedly located at the inner bottom of the shell, and a battery pack fixedly connected to the inner bottom of the heat insulation box.
[0007] Preferably, a filter screen is provided on the rear side of the fan unit, and the filter screen is fixed to the rear side of the mounting frame.
[0008] Preferably, a louver is fixedly connected to the rear side of the outer shell, and a pipe is fixedly connected through and through the rear outer wall of the insulation box, with the pipe passing through the fire-resistant core board and the louver.
[0009] Preferably, a flame-retardant core plate is fixedly connected to the inner wall of the outer shell near the rear side, and the flame-retardant core plate covers the entire rear port of the outer shell.
[0010] Preferably, a controller is provided on one side of the battery pack, and the controller is fixedly connected to the insulation box.
[0011] An inverter is installed on one side of the controller, and the inverter is fixedly connected to the insulation box.
[0012] Preferably, a smoke sensor is fixedly connected to the rear outer wall of the building wall, and a wire connects the smoke sensor to the controller.
[0013] Preferably, an exhaust duct is fixedly connected to the outer wall of the front side of the building wall, and the other end of the air inlet duct passes through and is welded to the exhaust duct. A baffle is fixedly connected to the lower left side of the air inlet duct, and the horizontal distance between the left and right sides of the baffle is equal to half the width of the inner hole of the exhaust duct.
[0014] Compared with the prior art, this utility model provides a smoke exhaust structure for stairwells in building fire protection engineering, which has the following beneficial effects:
[0015] 1. The stairwell smoke exhaust structure of the building's fire protection facilities uses smoke sensors to detect smoke and transmit the signal to the controller. The controller then controls the fan unit to start. Under the action of the fan unit, the smoke in the stairwell passes through the louvers, fire-resistant core board, filter screen and fan unit in sequence, and then enters the exhaust duct through the air inlet duct and is transported upward to the roof, thereby avoiding the impact of smoke generated by fire on the upper side.
[0016] 2. The stairwell smoke exhaust structure of the building's fire protection facilities is equipped with solar panels, which convert radiant energy into electrical energy and store it in battery packs to power the fan units and smoke sensors, thus preventing fire damage to the wiring and ensuring the smoke exhaust mechanism can function properly. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a front view of the present invention;
[0019] Figure 2 This is a rear view of the present invention;
[0020] Figure 3 This is a front view of the smoke exhaust mechanism of this utility model;
[0021] Figure 4 This is a rear view of the smoke exhaust mechanism of this utility model;
[0022] Figure 5 This is an exploded view of the smoke exhaust mechanism of this utility model.
[0023] In the diagram: 1. Exhaust duct; 2. Smoke exhaust mechanism; 3. Window; 4. Building wall; 5. Louver; 6. Baffle; 7. Air intake duct; 8. Solar panel; 9. Outer casing; 10. Pipe; 11. Insulation board; 12. Insulation box; 13. Battery pack; 14. Controller; 15. Inverter; 16. Flame-retardant core board; 17. Filter screen; 18. Fan unit; 19. Mounting frame; 20. Smoke sensor. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0027] This utility model provides the following technical solution:
[0028] Example 1
[0029] Please refer to Figure 1-5 The stairwell smoke exhaust structure of the building fire protection facility includes a building wall 4. A window 3 is fixedly connected to the inner side of the building wall 4. A smoke exhaust mechanism 2 is installed on the top of the upper side of the window 3. The smoke exhaust mechanism 2 includes an outer shell 9. An installation frame 19 is fixedly connected to the inner wall of the outer shell 9 near the front. A solar panel 8 is fixedly connected to the front of the installation frame 19. An air inlet duct 7 is installed on the left side of the solar panel 8 and is fixedly connected to the installation frame 19. A fan unit 18 is installed on the rear side of the air inlet duct 7 and is fixed to the front of the installation frame 19. A heat insulation board 11 is installed on the rear side of the solar panel 8 and is fixedly connected to the installation frame 19. A heat insulation box 12 is installed on the rear side of the heat insulation board 11 and is fixed to the inner bottom of the outer shell 9. A battery pack 13 is fixedly connected to the inner bottom of the heat insulation box 12. More specifically, when the smoke sensor 20 detects smoke, it transmits a signal to the controller 14. The controller 14 then controls the fan unit 18 to turn on. Subsequently, under the action of the fan unit 18, the smoke in the stairwell passes through the louvers 5, the fire-resistant core plate 16, the filter 17, and the fan unit 18 in sequence. Then, it enters the exhaust duct 1 through the air inlet duct 7 and is transported upward to the roof. By setting up the solar panel 8, the radiant energy is converted into electrical energy and stored in the battery pack 13 to provide power for the fan unit 18 and the smoke sensor 20.
[0030] In this embodiment, a filter screen 17 is provided at the rear of the fan unit 18, and the filter screen 17 is fixed to the rear of the mounting frame 19. More specifically, the fan unit 18 has the function of filtering particles in smoke.
[0031] In this embodiment, a louver 5 is fixedly connected to the rear side of the outer casing 9, and a pipe 10 is fixedly connected through and through the rear outer wall of the insulation box 12, with the pipe 10 passing through the flame-retardant core plate 16 and the louver 5. More specifically, the louver 5 serves both protective and ventilation functions, ensuring that smoke can enter the outer casing 9.
[0032] In this embodiment, a flame-arresting core plate 16 is fixedly connected to the inner wall of the outer casing 9 near the rear side, and the flame-arresting core plate 16 covers the entire rear port of the outer casing 9. More specifically, the flame-arresting core plate 16 has the function of preventing flames from entering the interior of the outer casing 9.
[0033] In this embodiment, a controller 14 is provided on one side of the battery pack 13, and the controller 14 is fixedly connected to the insulation box 12. An inverter 15 is provided on one side of the controller 14, and the inverter 15 is fixedly connected to the insulation box 12. More specifically, the solar panel 8, battery pack 13, controller 14, and inverter 15 are connected by wires. The battery pack 13 is used to store the electrical energy generated by the solar panel 8. The wind turbine 18 is connected to the battery pack 13 and controller 14 by wires, and the battery pack 13 provides electrical energy to the wind turbine 18.
[0034] In this embodiment, a smoke sensor 20 is fixedly connected to the outer rear wall of the building wall 4, and a wire connects the smoke sensor 20 to the controller 14. More specifically, the wire connecting the smoke sensor 20 and the controller 14 is installed inside the pipe 10, and a heat insulation layer is provided on the outer wall of the pipe 10.
[0035] In this embodiment, an exhaust duct 1 is fixedly connected to the outer wall of the front side of the building wall 4, and the other end of the air inlet duct 7 passes through and is welded to the exhaust duct 1. A baffle 6 is fixedly connected to the lower left side of the air inlet duct 7, and the horizontal distance between the left and right sides of the baffle 6 is equal to half the width of the inner hole of the exhaust duct 1.
[0036] More specifically, a blower needs to be installed at the bottom of the building, and the output end of the blower is connected to the lower port of the exhaust duct 1. The smoke enters the air inlet duct 7 under the action of the fan unit 18, and then is transported to the exhaust duct 1 through the other port of the air inlet duct 7, and then transported upward. The baffle 6 has the function of blocking the wind and preventing gas backflow when the air in the lower layer of the exhaust duct 1 is transported upward.
[0037] In actual operation, when this device is used, when the smoke sensor 20 detects smoke, it transmits a signal to the controller 14. The controller 14 then controls the fan unit 18 to turn on. Subsequently, under the action of the fan unit 18, the smoke in the stairwell passes through the louvers 5, the fire-resistant core plate 16, the filter screen 17, and the fan unit 18 in sequence. Then, it enters the exhaust duct 1 through the air inlet duct 7 and is transported upward to the roof. By setting up the solar panel 8, the radiant energy is converted into electrical energy and stored in the battery pack 13 to provide power for the fan unit 18 and the smoke sensor 20.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A smoke exhaust structure for stairwells in a building fire protection system, comprising building walls (4), characterized in that: A window (3) is fixedly connected to the inner side of the building wall (4). A smoke exhaust mechanism (2) is provided on the top of the upper side of the window (3). The smoke exhaust mechanism (2) includes a shell (9). An installation frame (19) is fixedly connected to the inner wall of the shell (9) near the front. A solar panel (8) is fixedly connected to the front of the installation frame (19). An air inlet duct (7) is provided on the left side of the solar panel (8), and the air inlet duct (7) is fixed to the installation frame (19). The air inlet duct (7) is connected to a fan unit (18) on the rear side, and the fan unit (18) is fixed to the front side of the mounting frame (19). The solar panel (8) is provided with a heat insulation plate (11) on the rear side, and the heat insulation plate (11) is fixedly connected to the mounting frame (19). The heat insulation box (12) is provided on the rear side of the heat insulation plate (11), and the heat insulation box (12) is fixed to the inner bottom of the outer shell (9). The inner bottom of the heat insulation box (12) is fixedly connected to a battery pack (13).
2. The stairwell smoke exhaust structure for a building fire protection facility according to claim 1, characterized in that: A filter screen (17) is provided on the rear side of the fan unit (18), and the filter screen (17) is fixed on the rear side of the mounting frame (19).
3. The stairwell smoke exhaust structure for a building fire protection facility according to claim 1, characterized in that: A louver (5) is fixedly connected to the rear side of the outer shell (9), and a pipe (10) is fixedly connected through the rear outer wall of the insulation box (12), and the pipe (10) passes through the fire-resistant core plate (16) and the louver (5).
4. The stairwell smoke exhaust structure for a building fire protection facility according to claim 1, characterized in that: A flame-retardant core plate (16) is fixedly connected to the inner wall of the outer shell (9) near the rear side, and the flame-retardant core plate (16) covers the entire rear port of the outer shell (9).
5. The stairwell smoke exhaust structure for a building fire protection facility according to claim 1, characterized in that: A controller (14) is provided on one side of the battery pack (13), and the controller (14) is fixedly connected to the insulation box (12). An inverter (15) is provided on one side of the controller (14), and the inverter (15) is fixedly connected to the insulation box (12).
6. The stairwell smoke exhaust structure for a building fire protection facility according to claim 1, characterized in that: A smoke sensor (20) is fixedly connected to the outer wall of the rear side of the building wall (4), and a wire is connected between the smoke sensor (20) and the controller (14).
7. The stairwell smoke exhaust structure for a building fire protection facility according to claim 1, characterized in that: The building wall (4) is fixedly connected to the outer wall of the front side with an exhaust pipe (1), and the other end of the air inlet pipe (7) passes through and is welded to the exhaust pipe (1). The lower left side of the air inlet pipe (7) is fixedly connected with a baffle (6), and the horizontal distance between the left and right sides of the baffle (6) is equal to half the width of the inner hole of the exhaust pipe (1).