Smoke exhaust device for smoke-proof corridor

Abstract

The utility model provides a smoke exhaust device for a smoke-proof corridor, which relates to the field of fire fighting equipment and comprises a smoke exhaust pipeline, a ventilation mechanism is fixedly arranged in the smoke exhaust pipeline, an exhaust mechanism is arranged at the output end of the ventilation mechanism, and the outer surface of the exhaust mechanism is fixedly connected with the inner surface of the smoke exhaust pipeline. Dense smoke in a corridor is sucked into the smoke exhaust pipeline, the dense smoke is conveyed into the air inlet of the conical frame through the output end of the ventilation mechanism and conveyed to the air outlet of the conical frame, and when the dense smoke flows to the air outlet through the air inlet, the flowing space of the dense smoke is gradually reduced, so that the collision frequency among dense smoke molecules is increased; the flowing speed of dense smoke is gradually increased, the speed of the dense smoke flowing into the connecting assembly through the air outlet is increased, the speed of the dense smoke discharged out of the smoke exhaust pipeline through the connecting assembly is increased, the flowing speed of the dense smoke in the smoke exhaust pipeline is increased through the structure, and the smoke exhaust efficiency of the smoke exhaust device is improved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the field of fire fighting equipment, in particular to a smoke exhaust device used in a smoke-proof corridor. Background Art

[0002] Smoke-proof corridors, also known as smoke-proof stairwells, are a type of fire-proof evacuation staircase used to prevent the entry of smoke in high-rise buildings. Smoke-proof corridors play a vital role in fire fighting. They are designed to prevent the entry of smoke during a fire and provide residents with a safe evacuation route. Smoke exhaust devices play a vital role in smoke-proof corridors. Their main function is to quickly and effectively remove smoke from the corridor when a fire occurs, ensure the safety and smooth flow of the evacuation route, and create favorable conditions for personnel escape and fire fighting.

[0003] The existing smoke exhaust device is basically composed of a ventilation mechanism and a pipe. The ventilation mechanism is basically a fan. When a fire occurs in the corridor, the fan is turned on and operated to suck the smoke inside the corridor into the pipe and discharge it from the corridor through the pipe, thereby reducing the smoke inside the corridor and creating favorable conditions for personnel escape and fire fighting. When the existing pipe encounters thick smoke, its smoke exhaust speed cannot quickly discharge the thick smoke out of the corridor.

[0004] Therefore, it is necessary to provide a new smoke exhaust device for smoke-proof corridors to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a smoke exhaust device for a smoke-proof corridor.

[0006] The smoke exhaust device for smoke-proof corridors provided by the utility model comprises a smoke exhaust pipe, a ventilation mechanism is fixedly arranged inside the smoke exhaust pipe, an exhaust mechanism is arranged at the output end of the ventilation mechanism, and the outer surface of the exhaust mechanism is fixedly connected to the inner surface of the smoke exhaust pipe;

[0007] The exhaust mechanism includes a first conical frame, which is arranged at the output end of the ventilation mechanism. The outer surface of the first conical frame is fixedly connected to the inner surface of the smoke exhaust pipe. An air inlet and an air outlet are respectively arranged at both ends of the first conical frame. The diameter of the air inlet is larger than the diameter of the air outlet. The air inlet is arranged at the end of the first conical frame adjacent to the ventilation mechanism, and the air outlet is arranged at the end of the first conical frame away from the air inlet. A connecting component is fixedly provided at the end of the first conical frame adjacent to the air outlet, and the outer surface of the connecting component is fixedly connected to the inner surface of the smoke exhaust pipe. The diameter of the connecting component is the same as the diameter of the air outlet of the first conical frame.

[0008] Preferably, the connecting component includes a circular frame, which is arranged inside the smoke exhaust duct near one end of the first conical frame air outlet, the outer surface of the circular frame is fixedly connected to the inner surface of the smoke exhaust duct, one end of the circular frame is fixedly connected to one end of the first conical frame air outlet, and the pipe diameter of the circular frame is the same as the pipe diameter of the air outlet of the first conical frame.

[0009] Preferably, a guide piece is provided at one end of the circular frame away from the first conical frame, the outer surface of the guide piece is fixedly connected to the inner surface of the smoke exhaust duct, and one end of the guide piece is fixedly connected to one end of the circular frame away from the first conical frame.

[0010] Preferably, the guide member includes a second conical frame, which is arranged at an end of the circular frame away from the first conical frame, the outer surface of the second conical frame is fixedly connected to the inner surface of the smoke exhaust duct, and one end of the second conical frame is fixedly connected to an end of the circular frame away from the first conical frame.

[0011] Preferably, an inlet and an outlet are respectively provided at both ends of the second conical frame, the diameter of the inlet is smaller than that of the outlet, the inlet is arranged at one end of the second conical frame close to the circular frame, and the outlet is arranged at one end of the second conical frame away from the inlet.

[0012] Preferably, the ventilation mechanism comprises a ventilator, which is fixedly arranged inside the smoke exhaust duct, the first conical frame is arranged at the output end of the ventilation mechanism, and the air inlet is arranged at one end of the first conical frame adjacent to the ventilator.

[0013] Compared with the related art, the smoke exhaust device for smoke-proof corridor provided by the utility model has the following advantages:

[0014] Beneficial effects:

[0015] When the ventilation mechanism rotates, the thick smoke in the corridor is sucked into the smoke exhaust duct, and the thick smoke is transported to the air inlet of the conical frame through the output end of the ventilation mechanism, and the thick smoke is transported to the air outlet of the conical frame. When the thick smoke flows from the air inlet to the air outlet, the space for its flow gradually decreases, resulting in an increase in the frequency of collisions between the thick smoke molecules, which gradually increases the flow rate of the thick smoke, speeding up the speed at which the thick smoke flows into the interior of the connecting component through the air outlet, and increasing the speed at which the thick smoke is discharged from the smoke exhaust duct through the connecting component. This structure increases the speed at which the thick smoke flows inside the smoke exhaust duct, and to a certain extent improves the smoke exhaust efficiency of the smoke exhaust device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic cross-sectional view of a smoke exhaust device for a smoke-proof corridor provided by the utility model;

[0017] Figure 2 A schematic diagram of the overall structure of a smoke exhaust device for a smoke-proof corridor provided by the utility model;

[0018] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of the discharge mechanism shown;

[0019] Figure 4 for Figure 1 A schematic cross-sectional structure diagram of the ventilation mechanism shown.

[0020] Numbers in the figure: 1, smoke exhaust duct; 2, first cone frame; 3, circular frame; 4, second cone; 5, ventilator. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 ,in, Figure 1 A schematic cross-sectional view of a smoke exhaust device for a smoke-proof corridor provided by the utility model; Figure 2 A schematic diagram of the overall structure of a smoke exhaust device for a smoke-proof corridor provided by the utility model; Figure 3 for Figure 1 A schematic cross-sectional structure diagram of the discharge mechanism shown; Figure 4 for Figure 1 A schematic cross-sectional structure diagram of the ventilation mechanism shown.

[0023] In the specific implementation process, Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, a smoke exhaust device for a smoke-proof corridor includes a smoke exhaust duct 1, a ventilator 5 is fixedly arranged inside the smoke exhaust duct 1, an exhaust mechanism is arranged at the output end of the ventilator 5, and the outer surface of the exhaust mechanism is fixedly connected to the inner surface of the smoke exhaust duct 1. The exhaust mechanism includes a first conical frame 2, the first conical frame 2 is arranged at the output end of the ventilator 5, the outer surface of the first conical frame 2 is fixedly connected to the inner surface of the smoke exhaust duct 1, and an air inlet and an air outlet are respectively arranged at both ends of the first conical frame 2, the diameter of the air inlet is larger than the diameter of the air outlet, the air inlet is arranged at one end of the first conical frame 2 near the ventilator 5, and the air outlet is arranged at the end of the first conical frame 2 away from the inlet At one end of the air outlet, a connecting component is fixedly provided at one end of the first conical frame 2 near the air outlet, the outer surface of the connecting component is fixedly connected to the inner surface of the smoke exhaust pipe 1, and the pipe diameter of the connecting component is the same as the pipe diameter of the air outlet of the first conical frame 2. The connecting component includes a circular frame 3, which is arranged inside the smoke exhaust pipe 1 near one end of the air outlet of the first conical frame 2, the outer surface of the circular frame 3 is fixedly connected to the inner surface of the smoke exhaust pipe 1, and one end of the circular frame 3 is fixedly connected to one end of the air outlet of the first conical frame 2, and the pipe diameter of the circular frame 3 is the same as the pipe diameter of the air outlet of the first conical frame 2. A guide is provided at one end of the circular frame 3 away from the first conical frame 2, and the outer surface of the guide is connected to The inner surface of the smoke exhaust pipe 1 is fixedly connected, one end of the guide piece is fixedly connected to the end of the circular frame 3 away from the first conical frame 2, the guide piece includes a second conical frame 4, the second conical frame 4 is arranged at the end of the circular frame 3 away from the first conical frame 2, the outer surface of the second conical frame 4 is fixedly connected to the inner surface of the smoke exhaust pipe 1, one end of the second conical frame 4 is fixedly connected to the end of the circular frame 3 away from the first conical frame 2, and the two ends of the second conical frame 4 are respectively provided with an inlet and an outlet, the diameter of the inlet is smaller than the diameter of the outlet, the inlet is arranged at the end of the second conical frame 4 near the circular frame 3, and the outlet is arranged at the end of the second conical frame 4 away from the inlet, and the ventilator The 5 structure includes a ventilator 5, which is fixedly arranged inside the smoke exhaust duct 1. The first conical frame 2 is arranged at the output end of the ventilator 5 structure, and the air inlet is arranged at one end of the first conical frame 2 near the ventilator 5. When the thick smoke forms a vortex, it is very easy to cause the remaining thick smoke to be unable to be normally discharged from the smoke exhaust duct 1. At the same time, it will cause the thick smoke to flow back to a certain extent. Therefore, the second conical frame 4 can improve the stability of the thick smoke when it is discharged, and the circular frame 3 can make the flow velocity of the thick smoke begin to stabilize to a certain extent when the thick smoke flows inside it, and cooperate with the second conical frame 4 to further improve the stability of the thick smoke when it flows inside the smoke exhaust duct 1.

[0024] The working principle provided by the utility model is as follows: when the ventilator 5 rotates, the thick smoke in the corridor is sucked into the smoke exhaust duct 1, and the thick smoke is transported to the air inlet of the first cone frame 2 through the output end of the ventilator 5, and the thick smoke is transported to the air outlet of the first cone frame 2. When the thick smoke flows from the air inlet to the air outlet, the flow space is gradually reduced, resulting in an increase in the collision frequency between the thick smoke molecules, so that the flow rate of the thick smoke is gradually increased, and the speed at which the thick smoke flows into the circular frame 3 through the air outlet is accelerated. The thick smoke flows from the circular frame 3 into the inlet of the second cone 4 frame, and the thick smoke is transported to the exhaust port of the second cone 4 frame. When the thick smoke flows from the inlet to the exhaust port, the flow space is gradually increased, so that the collision frequency between the thick smoke molecules is reduced, and the stability of the thick smoke is improved, and the thick smoke is prevented from forming a vortex at the exhaust port of the second cone 4 frame when being discharged from the smoke exhaust duct 1. To a certain extent, the stability of the thick smoke during discharge is guaranteed, so that the thick smoke can be discharged from the stairs from the smoke exhaust duct 1 normally.

[0025] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A smoke exhaust device for a smoke-proof corridor, characterized in that: It comprises a smoke exhaust pipe (1), wherein a ventilator (5) is fixedly arranged inside the smoke exhaust pipe (1), an exhaust mechanism is arranged at the output end of the ventilator (5), and an outer surface of the exhaust mechanism is fixedly connected to an inner surface of the smoke exhaust pipe (1); The exhaust mechanism comprises a first conical frame (2), the first conical frame (2) being arranged at the output end of the ventilator (5), the outer surface of the first conical frame (2) being fixedly connected to the inner surface of the smoke exhaust pipe (1), the first conical frame (2) having an air inlet and an air outlet at both ends respectively, the diameter of the air inlet being larger than the diameter of the air outlet, the air inlet being arranged at the end of the first conical frame (2) adjacent to the ventilator (5), the air outlet being arranged at the end of the first conical frame (2) away from the air inlet, a connecting component being fixedly arranged at the end of the first conical frame (2) adjacent to the air outlet, the outer surface of the connecting component being fixedly connected to the inner surface of the smoke exhaust pipe (1), the diameter of the connecting component being the same as the diameter of the air outlet of the first conical frame (2).

2. The smoke exhaust device for smoke-proof corridor according to claim 1, characterized in that: The connection assembly comprises a circular frame (3), wherein the circular frame (3) is arranged inside the smoke exhaust pipe (1) near one end of the air outlet of the first conical frame (2), the outer surface of the circular frame (3) is fixedly connected to the inner surface of the smoke exhaust pipe (1), one end of the circular frame (3) is fixedly connected to one end of the air outlet of the first conical frame (2), and the pipe diameter of the circular frame (3) is the same as the pipe diameter of the air outlet of the first conical frame (2).

3. The smoke exhaust device for smoke-proof corridor according to claim 2, characterized in that: A flow guide is provided at one end of the circular frame (3) away from the first conical frame (2); the outer surface of the flow guide is fixedly connected to the inner surface of the smoke exhaust pipe (1); and one end of the flow guide is fixedly connected to the end of the circular frame (3) away from the first conical frame (2).

4. The smoke exhaust device for smoke-proof corridor according to claim 3, characterized in that: The guide member comprises a second conical frame (4), the second conical frame (4) being arranged at an end of the circular frame (3) away from the first conical frame (2), the outer surface of the second conical frame (4) being fixedly connected to the inner surface of the smoke exhaust duct (1), and one end of the second conical frame (4) being fixedly connected to an end of the circular frame (3) away from the first conical frame (2).

5. The smoke exhaust device for smoke-proof corridor according to claim 4, characterized in that: An inlet and an outlet are respectively provided at both ends of the second conical frame (4), wherein the diameter of the inlet is smaller than that of the outlet. The inlet is arranged at one end of the second conical frame (4) close to the circular frame (3), and the outlet is arranged at one end of the second conical frame (4) away from the inlet.

6. The smoke exhaust device for smoke-proof corridor according to claim 5, characterized in that: The ventilator (5) structure comprises a ventilator (5), wherein the ventilator (5) is fixedly arranged inside a smoke exhaust duct (1), a first conical frame (2) is arranged at an output end of the ventilator (5) structure, and an air inlet is arranged at an end of the first conical frame (2) adjacent to the ventilator (5).

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