Comprehensive induction shunting smoke exhaust device with fire damper opening and closing function and control system of comprehensive induction shunting smoke exhaust device
Through a comprehensive induction shunt smoke exhaust device with fire valve opening and closing, the smoke distribution is controlled by pressure sensors and frequency converter motors, combined with lifting mechanisms and temperature sensors, the problems of low efficiency and poor stability of existing smoke exhaust devices are solved, and efficient and safe smoke exhaust and fire protection are achieved.
Patent Information
- Application Number
- CN202510581876.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-07-01
AI Technical Summary
The existing smoke exhaust devices have problems such as low smoke exhaust efficiency, inability to dynamically adjust, easy vibration displacement of mechanical transmission, and slow response speed, making it difficult to meet the smoke exhaust needs of high-rise buildings and underground spaces.
The integrated induction shunt smoke exhaust device with fire valve opening and closing is adopted. The pressure sensor and the frequency converter motor are linked to the rotation of the shunt rack, combined with the lifting mechanism and temperature sensor to real-time monitoring, to achieve uniform smoke distribution and fire-proof isolation, and is equipped with a PLC control system to support remote monitoring.
It significantly improves smoke exhaust efficiency, adapts to different smoke flow requirements, avoids overloading in a single channel, ensures fire safety, extends equipment life, and has local operation and remote monitoring functions.
Smart Images
Figure CN120232115A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of intelligent fire prevention, and particularly relates to a comprehensive induction shunt smoke exhaust device with a fire damper opening and closing and its control system. Background Art
[0002] In modern buildings, the fire smoke exhaust system is crucial for ensuring personnel safety and reducing property losses. Traditional smoke exhaust devices mostly adopt a fixed structure, and the smoke exhaust efficiency is limited by the single-channel design, making it difficult to cope with the rapid discharge of a large amount of smoke. At the same time, existing fire dampers usually only have the function of closing triggered by temperature, lacking intelligent shunt and dynamic adjustment capabilities, resulting in uneven smoke exhaust or the inability to block local high-temperature smoke in a timely manner. In addition, mechanical transmission components are prone to displacement due to vibration during long-term operation, affecting the system stability. Although some improved smoke exhaust devices have introduced electric adjustment mechanisms, there are still problems such as slow response speed and insufficient linkage control, and they cannot meet the smoke exhaust requirements in complex environments such as high-rise buildings and underground spaces.
[0003] Therefore, in view of the above problems, a comprehensive induction shunt smoke exhaust device with a fire damper opening and closing and its control system are now developed. Summary of the Invention
[0004] In order to overcome the shortcomings of existing devices, the present invention provides a comprehensive induction shunt smoke exhaust device with a fire damper opening and closing and its control system.
[0005] The technical solution of the present invention is: a comprehensive induction shunt smoke exhaust device with a fire damper opening and closing, including a shunt chamber, four smoke exhaust fire dampers are provided on the shunt chamber, a cover plate is rotatably arranged in each of the smoke exhaust fire dampers, a temperature sensor is arranged in the smoke exhaust fire damper, and when the temperature in the device is too high, it will control the cover plate to automatically close and stop the smoke exhaust operation. A shunt mechanism is arranged in the shunt chamber, and the shunt mechanism is used to guide the smoke to perform a shunt movement to improve the smoke exhaust efficiency. A lifting mechanism is arranged between the shunt chamber and the shunt mechanism, and the lifting mechanism is used to control the shunt mechanism to perform a lifting movement.
[0006] Further, the shunt mechanism includes a fixed frame, the fixed frame is installed on the top of the shunt chamber, a lifting plate is slidably installed on the fixed frame, a first protective frame is arranged on the top of the lifting plate, a first driving motor is installed in the first protective frame, the output shaft of the first driving motor is downwardly oriented, a shunt frame is connected to the output shaft of the first driving motor, the shunt frame is attached to the lower side of the lifting plate, a pressure sensor is arranged in the smoke inlet at the bottom of the shunt chamber, and the pressure sensor is used to measure the smoke pressure. After the smoke pressure is too large, it will control the first driving motor to start, so that the shunt frame starts to rotate to improve the smoke exhaust efficiency.
[0007] Furthermore, the lifting mechanism includes a mounting plate which is arranged on the upper side of the left part of the shunt chamber. A second driving motor is mounted on the mounting plate. A gear is connected to the output shaft of the second driving motor. A lead screw is rotatably connected to the upper side of the left part of the shunt chamber. A gear is also connected to the bottom of the lead screw. The gears mesh with each other. The top of the lead screw is threadedly connected to the lifting plate. The top of the lead screw is rotatably connected to the fixed frame. A guide rod is arranged on the upper side of the right part of the shunt chamber. The guide rod is slidably connected to the lifting plate.
[0008] Furthermore, an adjustment mechanism is also included. The adjustment mechanism includes a sliding plate. The left and right parts inside the shunt chamber are both slidably connected with the sliding plate. A sliding frame is mounted on each sliding plate. The sliding frames are both slidably connected to the smoke exhaust fire damper. The sliding frames can be squeezed by the adjacent cover plates. A first spring is connected between each sliding frame and the adjacent smoke exhaust fire damper. Two adjusting parts are mounted on the inner side of each sliding plate. The adjusting parts are used to push the shunt frame so that the shunt frame can return to the initial angle.
[0009] Furthermore, a pressing mechanism is also included. The pressing mechanism includes a second protective frame. The second protective frame is mounted on the top of the shunt chamber. Two mounting socket seats are mounted on the inner top of the second protective frame. A pressing part is slidably connected in each mounting socket seat. The pressing part is used to squeeze the fixed frame to keep the fixed frame stable. A second spring is connected between each pressing part and the adjacent mounting socket seat.
[0010] Furthermore, a filtering mechanism is also included. The filtering mechanism includes a mounting frame. The mounting frame is mounted at the smoke inlet at the bottom of the shunt chamber. A filter screen is arranged on the mounting frame. The filter screen can block some solid impurities to prevent them from entering the shunt chamber and damaging the components.
[0011] Furthermore, a control system is also included. The control system includes a main control module, a sensing and detection layer and an execution and control layer. The main control module adopts a PLC + touch screen control scheme. The core processor adopts a Siemens S7-1200 series PLC. A 4G communication module is synchronously equipped to realize remote monitoring. The sensing and detection layer includes a temperature detection unit, a pressure detection unit and a position detection unit.
[0012] Furthermore, the temperature detection unit adopts 4-channel PT100 temperature sensors corresponding to 4 fire dampers. The pressure detection unit adopts 1 piezoresistive pressure sensor which is located inside the smoke inlet. The position detection unit includes 2 photoelectric switches, 1 rotary encoder and 2 limit switches, which respectively correspond to the initial position detection of the shunt frame, the angle feedback of the shunt frame and the upper and lower extreme positions of the lifting mechanism.
[0013] Furthermore, the execution control layer includes a motor drive group, an electromagnetic valve group and an alarm output group, wherein the motor drive group includes a 1.5kW inverter to control the first drive motor, a stepper motor driver to control the second drive motor, the electromagnetic valve group uses a 4-way 24VDC electromagnetic valve control cover plate, and the alarm output group uses an audible and visual alarm + relay output.
[0014] Furthermore, the fixing frame and the diversion chamber are connected in a detachable manner.
[0015] By adopting the above technical solution, the present invention has the following advantages:
[0016] 1. The present invention realizes intelligent speed regulation and rotation of the diverter rack through linkage control of the pressure sensor and the variable frequency motor, evenly distributes the smoke to the four fire dampers, significantly improves the smoke exhaust efficiency, and combines the multi-gear adjustment function of the lifting mechanism to adapt to different smoke flow requirements and avoid overload of a single channel. The temperature sensor monitors the status of each valve in real time. When the temperature exceeds the limit, the corresponding cover plate is immediately closed and the linkage adjustment mechanism is used to reset the diverter rack, ensuring the simultaneous realization of fire isolation and system safety.
[0017] 2. The present invention uses spring preload to dynamically stabilize the fixed frame, suppress vibration deviation during high-speed operation, and extend the life of the equipment. The filter net effectively intercepts solid impurities and protects internal components. The control system integrates PLC and remote communication modules, supports three modes: automatic smoke exhaust, fire protection, and safety interlock, and has both local operation and remote monitoring functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0019] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.
[0020] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the diversion mechanism of the present invention.
[0021] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the lifting mechanism of the present invention.
[0022] Figure 5 It is a partial cross-sectional structural schematic diagram of the lifting mechanism of the present invention.
[0023] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.
[0024] Figure 7 It is a partial cross-sectional three-dimensional structural schematic diagram of the clamping mechanism of the present invention.
[0025] Figure 8 This is a schematic three-dimensional structure diagram of the filtering mechanism of the present invention.
[0026] Among them: 1 - shunt chamber, 2 - smoke exhaust fire damper, 3 - cover plate, 4 - shunt mechanism, 41 - fixing frame, 42 - lifting plate, 43 - first protective frame, 44 - first driving motor, 45 - shunt frame, 46 - pressure sensor, 5 - lifting mechanism, 51 - mounting plate, 52 - second driving motor, 53 - gear, 54 - lead screw, 6 - adjustment mechanism, 61 - sliding plate, 62 - sliding frame, 63 - first spring, 64 - adjustment part, 7 - pressing mechanism, 71 - second protective frame, 72 - mounting socket, 73 - pressing part, 74 - second spring, 8 - filtering mechanism, 81 - mounting frame, 82 - filter net. Specific embodiments
[0027] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right in this article are only in terms of the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article, for example: the first, the second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application: connections, couplings, unless otherwise specified, all include direct and indirect connections (couplings).
[0028] Embodiment 1
[0029] A comprehensive induction shunt smoke exhaust device with a fire damper opening and closing, as Figures 1-8 shown, includes a shunt chamber 1. Four smoke exhaust fire dampers 2 are provided on the shunt chamber 1. Cover plates 3 are rotatably arranged in the smoke exhaust fire dampers 2. Temperature sensors are arranged in the smoke exhaust fire dampers 2. When the temperature in the device is too high, the cover plates 3 will be controlled to automatically close to stop the smoke exhaust operation. A shunt mechanism 4 is arranged in the shunt chamber 1. The shunt mechanism 4 is used to guide the smoke to perform a shunt movement to improve the smoke exhaust efficiency. A lifting mechanism 5 is arranged between the shunt chamber 1 and the shunt mechanism 4. The lifting mechanism 5 is used to control the shunt mechanism 4 to perform a lifting movement.
[0030] The flow splitting mechanism 4 includes a fixed frame 41. The fixed frame 41 is installed on the top of the flow splitting chamber 1. The connection structure between the fixed frame 41 and the flow splitting chamber 1 is a detachable connection structure. A lifting plate 42 is slidably installed on the fixed frame 41. A first protective frame 43 is arranged on the top of the lifting plate 42. A first driving motor 44 is installed inside the first protective frame 43. The output shaft of the first driving motor 44 is arranged downward. A flow splitting frame 45 is connected to the output shaft of the first driving motor 44. The flow splitting frame 45 is in contact with the lower side of the lifting plate 42. A pressure sensor 46 is arranged in the smoke inlet at the bottom of the flow splitting chamber 1. The pressure sensor 46 is used to measure the smoke pressure. After the smoke pressure is too high, it will control the first driving motor 44 to start, so that the flow splitting frame 45 starts to rotate, improving the smoke exhaust efficiency.
[0031] The lifting mechanism 5 includes a mounting plate 51. The mounting plate 51 is arranged on the upper side of the left part of the flow splitting chamber 1. A second driving motor 52 is installed on the mounting plate 51. A gear 53 is connected to the output shaft of the second driving motor 52. A lead screw 54 is rotatably connected to the upper side of the left part of the flow splitting chamber 1. The bottom of the lead screw 54 is also connected with a gear 53. The gears 53 mesh with each other. The top of the lead screw 54 is in threaded connection with the lifting plate 42. The top of the lead screw 54 is rotatably connected to the fixed frame 41. A guide rod is arranged on the upper side of the right part of the flow splitting chamber 1. The guide rod is slidably connected to the lifting plate 42.
[0032] It should be noted that when a fire occurs, the smoke enters the device through the smoke inlet at the bottom of the flow splitting chamber 1. At this time, the pressure sensor 46 monitors the smoke pressure in real time. If the pressure exceeds the set threshold, the control system will be triggered to start the first driving motor 44, driving the flow splitting frame 45 to rotate at high speed, evenly dispersing the smoke to the directions of the four smoke exhaust fire dampers 2 to improve the smoke exhaust efficiency. At the same time, the second driving motor 52 can drive the lead screw 54 to rotate through the gear 53, so that the lifting plate 42 drives the whole flow splitting mechanism 4 to move up and down, thereby adjusting the distance between the flow splitting frame 45 and the smoke inlet to adapt to different smoke flows; the temperature sensors arranged in each smoke exhaust fire damper 2 will monitor the pipeline temperature in real time. When the temperature rises abnormally, the control cover plate 3 will be immediately controlled to close automatically to cut off the smoke passage, while the other fire dampers that have not exceeded the temperature can still continue to work. The whole system realizes the integration function of intelligent smoke exhaust and fire protection through the linkage control of pressure and temperature signals. Its liftable flow splitting mechanism 4 further enhances the adaptability of the device to different working conditions.
[0033] It also includes a control system, which consists of a main control module, a sensing and detection layer, and an execution and control layer. The main control module adopts a PLC + touch screen control solution, with the core processor being a Siemens S7-1200 series PLC, and is synchronously equipped with a 4G communication module to achieve remote monitoring. The sensing and detection layer includes a temperature detection unit, a pressure detection unit, and a position detection unit. Among them, the temperature detection unit uses 4-channel PT100 temperature sensors, corresponding to 4 fire dampers. The pressure detection unit uses 1 piezoresistive pressure sensor 46, which is located inside the smoke inlet. The position detection unit includes 2 photoelectric switches, 1 rotary encoder, and 2 limit switches, corresponding to the initial position detection of the diverter rack 45, the angle feedback of the diverter rack 45, and the upper and lower extreme positions of the lifting mechanism 5 respectively. The execution and control layer includes a motor drive group, an electromagnetic valve group, and an alarm output group. Among them, the motor drive group includes 1 1.5kW frequency converter to control the first drive motor 44, and 1 stepper motor driver to control the second drive motor 52. The electromagnetic valve group uses 4-channel 24VDC solenoid valves to control the cover plate 3, and the alarm output group uses an audible and visual alarm + relay output.
[0034] It should be noted that the device control logic includes the following modes:
[0035] Automatic smoke exhaust mode: The signal of the pressure sensor 46 is transmitted to the PLC analog input module. When the pressure is greater than the set value, the first drive motor 44 is started for variable frequency speed regulation, initially at 30Hz, and then the motor speed is automatically adjusted according to the pressure change, adjustable from 20 - 50Hz. At the same time, the lifting mechanism 5 is automatically positioned at 3 preset height gears;
[0036] It also includes a filtering mechanism 8, which consists of a mounting frame 81. The mounting frame 81 is installed at the smoke inlet at the bottom of the diversion chamber 1. A filter screen 82 is provided on the mounting frame 81, and the filter screen 82 can block some solid impurities to prevent them from entering the diversion chamber 1 and damaging the components.
[0037] Fire protection mode: The signal of the temperature sensor is transmitted to the PLV temperature module. At this time, when the temperature of any valve exceeds 280 degrees, the power supply of the corresponding fire damper solenoid valve is immediately cut off, triggering the closing action of the cover plate 3 and starting the reset program of the adjustment mechanism 6;
[0038] Safety interlock mode: Lifting operation is prohibited when the diverter rack 45 is not reset, and the rotation speed of the diverter rack 45 is automatically reduced when any fire damper is closed.
[0039] Embodiment 2
[0040] On the basis of Embodiment 1, it further includes an adjustment mechanism 6. The adjustment mechanism 6 includes a sliding plate 61. The left and right parts in the diversion chamber 1 are both slidably connected with the sliding plate 61. The sliding plates 61 are both provided with sliding frames 62. The sliding frames 62 are both slidably connected with the smoke exhaust fire damper 2. The sliding frames 62 can be extruded by the adjacent cover plates 3. A first spring 63 is connected between each sliding frame 62 and the adjacent smoke exhaust fire damper 2. Two adjusting members 64 are installed on the inner sides of the sliding plates 61. The adjusting members 64 are used to push the diversion frame 45 so that the diversion frame 45 can return to the initial angle.
[0041] It should be noted that when the cover plate 3 is closed due to excessive temperature, the cover plate 3 will automatically rotate and close and push the sliding frame 62. At this time, the diversion frame 45 no longer needs to work normally, that is, the diversion frame 45 needs to return to the initial position. As the cover plate 3 moves, the adjustment mechanism 6 starts to operate. The sliding frame 62 slides in the left and right directions in the diversion chamber 1, driving the sliding plate 61 thereon to move synchronously. The sliding frame 62 is elastically connected to the smoke exhaust fire damper 2 through the first spring 63. During the movement, the adjusting member 64 installed on the sliding plate 61 will contact the rotating diversion frame 45 and apply a thrust force. This thrust force causes the diversion frame 45 to gradually decelerate and finally return to the initial positioning state. The first spring 63 plays a buffering and stabilizing role in this process, avoiding mechanical impact and ensuring the smooth reset of the diversion frame 45.
[0042] It further includes a pressing mechanism 7. The pressing mechanism 7 includes a second protective frame 71. The second protective frame 71 is installed on the top of the diversion chamber 1. Two mounting socket seats 72 are installed on the inner top of the second protective frame 71. A pressing member 73 is slidably connected in each mounting socket seat 72. The pressing member 73 is used to squeeze the fixing frame 41 to keep the fixing frame 41 stable. A second spring 74 is connected between each pressing member 73 and the adjacent mounting socket seat 72.
[0043] It should be noted that when the diversion mechanism 4 is adjusted to the initial position through the lifting mechanism 5, the pressing mechanism 7 automatically starts the stabilizing function. The pressing member 73 slides downward under the pre-tightening force of the second spring 74 and elastically contacts the upper surface of the fixing frame 41. The second spring 74 continuously applies a downward pressure, making the pressing member 73 always closely adhere to the fixing frame 41, effectively suppressing the installation stability of the fixing frame 41 in the normal state.
[0044] The above has introduced the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.
Claims
1. A comprehensive induction diversion smoke exhaust device with fire damper opening and closing, characterized in that: The invention comprises a diversion chamber (1), wherein four smoke exhaust fire dampers (2) are arranged on the diversion chamber (1), wherein each of the smoke exhaust fire dampers (2) is provided with a cover plate (3) in a rotatable manner, wherein a temperature sensor is arranged in the smoke exhaust fire damper (2), and when the temperature in the device is too high, the cover plate (3) is controlled to be automatically closed to stop the smoke exhaust operation, wherein a diversion mechanism (4) is arranged in the diversion chamber (1), wherein the diversion mechanism (4) is used to guide the smoke to perform diversion movement to improve the smoke exhaust efficiency, and wherein a lifting mechanism (5) is arranged between the diversion chamber (1) and the diversion mechanism (4), wherein the lifting mechanism (5) is used to control the diversion mechanism (4) to perform lifting movement.
2. A comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 1, characterized in that: The diversion mechanism (4) comprises a fixed frame (41), the fixed frame (41) is installed on the top of the diversion chamber (1), a lifting plate (42) is slidably installed on the fixed frame (41), a first protective frame (43) is arranged on the top of the lifting plate (42), a first drive motor (44) is installed in the first protective frame (43), the output shaft of the first drive motor (44) is arranged downward, a diversion frame (45) is connected to the output shaft of the first drive motor (44), the diversion frame (45) is fitted with the lower side of the lifting plate (42), a pressure sensor (46) is arranged in the smoke inlet at the bottom of the diversion chamber (1), the pressure sensor (46) is used to measure the smoke pressure, and when the smoke pressure is too large, the first drive motor (44) will be controlled to start, so that the diversion frame (45) starts to rotate, thereby improving the smoke exhaust efficiency.
3. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 2 is characterized in that: The lifting mechanism (5) comprises a mounting plate (51), the mounting plate (51) being arranged on the upper left side of the diversion chamber (1), a second drive motor (52) being mounted on the mounting plate (51), a gear (53) being connected to the output shaft of the second drive motor (52), a screw rod (54) being rotatably connected to the upper left side of the diversion chamber (1), a gear (53) being also connected to the bottom of the screw rod (54), the gears (53) being meshed with each other, the top of the screw rod (54) being threadedly connected to the lifting plate (42), the top of the screw rod (54) being rotatably connected to the fixing frame (41), a guide rod being arranged on the upper right side of the diversion chamber (1), the guide rod being slidably connected to the lifting plate (42).
4. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 3 is characterized in that: The invention also comprises an adjustment mechanism (6), wherein the adjustment mechanism (6) comprises a sliding plate (61), the left and right parts of the diversion chamber (1) are both slidably connected with the sliding plate (61), a sliding frame (62) is installed on the sliding plate (61), the sliding frame (62) is slidably connected with the smoke exhaust fire damper (2), the sliding frame (62) can be squeezed by the adjacent cover plate (3), a first spring (63) is connected between the sliding frame (62) and the adjacent smoke exhaust fire damper (2), and two adjustment members (64) are installed on the inner side of the sliding plate (61), and the adjustment members (64) are used to push the diversion frame (45) so that the diversion frame (45) can be restored to an initial angle.
5. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 4 is characterized in that: The invention also comprises a clamping mechanism (7), wherein the clamping mechanism (7) comprises a second protective frame (71), the second protective frame (71) is installed on the top of the diversion chamber (1), two mounting sleeves (72) are installed on the top of the second protective frame (71), and the mounting sleeves (72) are both slidably connected with clamping members (73), and the clamping members (73) are used to squeeze the fixing frame (41) to maintain the stability of the fixing frame (41), and a second spring (74) is connected between the clamping member (73) and the adjacent mounting sleeves (72).
6. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 5 is characterized in that: The invention also comprises a filtering mechanism (8), wherein the filtering mechanism (8) comprises a mounting frame (81), the mounting frame (81) being mounted at the smoke inlet at the bottom of the diversion chamber (1), the mounting frame (81) being provided with a filter screen (82), the filter screen (82) being capable of blocking some solid impurities to prevent them from entering the diversion chamber (1) and causing damage to components.
7. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 6 is characterized in that: It also includes a control system, which includes a main control module, a sensor detection layer and an execution control layer. The main control module adopts a PLC+touch screen control solution, the core processor adopts a Siemens S7-1200 series PLC, and is synchronously equipped with a 4G communication module to achieve remote monitoring. The sensor detection layer includes a temperature detection unit, a pressure detection unit and a position detection unit.
8. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 7 is characterized in that: The temperature detection unit adopts 4 PT100 temperature sensors corresponding to 4 fire dampers, the pressure detection unit adopts 1 piezoresistive pressure sensor (46) located in the smoke inlet, and the position detection unit includes 2 photoelectric switches, 1 rotary encoder and 2 limit switches, corresponding to the initial position detection of the diverter rack (45), the angle feedback of the diverter rack (45) and the upper and lower limit positions of the lifting mechanism (5), respectively.
9. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 7 is characterized in that: The execution control layer includes a motor drive group, an electromagnetic valve group and an alarm output group, wherein the motor drive group includes a 1.5kW inverter to control a first drive motor (44), a stepper motor driver to control a second drive motor (52), the electromagnetic valve group uses a 4-way 24VDC electromagnetic valve control cover plate (3), and the alarm output group uses an audible and visual alarm + relay output.
10. The comprehensive induction split flow smoke exhaust device with fire damper opening and closing according to claim 2, characterized in that: The fixing frame (41) and the diversion chamber (1) are in a detachable connection structure.