An emergency smoke exhaust device for fire fighting

Abstract

This utility model provides an emergency smoke extraction device for fire protection, comprising a housing, a main exhaust unit, a small fan, a smoke sensor, and a controller. The housing has a main air duct and a detection air duct. The main exhaust unit is located in the main air duct, while the small fan and smoke sensor are located in the detection air duct. The controller is electrically connected to the main exhaust unit, the small fan, and the smoke sensor. The main exhaust unit operates based on the detection signal from the smoke sensor. This smoke extraction device features a detection air duct. During normal use, the small fan in the detection air duct draws ambient air into the detection channel, where the smoke sensor detects the air. This active air extraction and detection method allows for faster detection of smoke, enabling the main exhaust unit to intervene promptly and improving safety. Furthermore, the integrated controller provides a more stable signal and better compatibility.

Description

Technical Field

[0001] This utility model relates to an emergency smoke exhaust device for fire fighting. Background Technology

[0002] In some public places such as apartments and hotels, smoke extraction systems are installed in public areas such as corridors, parking lots, and stairwells. These systems activate when a fire alarm is triggered, expelling indoor air to remove toxic gases and dense smoke. Currently, most smoke extraction systems on the market are passively triggered, requiring the use of alarms and sensors in the area. The system only starts operating when the alarm or sensor is activated. However, since alarms and sensors are independent electronic devices, establishing a connection between the smoke extraction system and these devices requires an external controller. These external controllers often have compatibility issues and unstable signals.

[0003] Therefore, it is necessary to make further improvements. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems. We provide an emergency smoke exhaust device for fire protection, which has a built-in smoke detector and a stable and reliable signal.

[0005] To achieve the above objectives, we provide an emergency smoke exhaust device for fire protection, which includes a housing, a main exhaust device, a small fan, a smoke sensor, and a controller. The housing is provided with a main air duct and a detection air duct. The main exhaust device is located on the main air duct, and the small fan and smoke sensor are located in the detection air duct. The controller is electrically connected to the main exhaust device, the small fan, and the smoke sensor. The main exhaust device operates according to the detection signal from the smoke sensor.

[0006] In one or more embodiments, the main exhaust device includes a motor, a motor bracket, and fan blades. The motor is fixed in the main air duct by the motor bracket, and the fan blades are connected to the motor shaft.

[0007] In one or more embodiments, a normally closed check valve is provided at the air outlet of the main air duct, which can be opened when the main exhaust device is working.

[0008] In one or more embodiments, a plurality of positioning blocks are distributed circumferentially on the outer wall of the housing, and the positioning blocks are provided with mounting holes.

[0009] In one or more embodiments, a control box is provided on the outside of the housing, the control box is fixed to the housing by screws, the controller is located inside the control box, and the controller has a power cord connected to the control box.

[0010] In one or more embodiments, both the air inlet of the main air duct and the air inlet of the detection air duct are provided with air inlet grilles.

[0011] In one or more embodiments, the controller has an alarm module that issues an alarm based on a detection signal from a smoke sensor.

[0012] Compared with the prior art, this utility model has the following technical advantages: The smoke extraction device is equipped with a detection duct. During daily use, a small fan in the detection duct draws ambient air into the detection channel, where a smoke sensor detects the air. This active air extraction detection method allows for faster detection of smoke in the air, enabling the main exhaust device to intervene promptly and improving safety. Furthermore, the smoke extraction device has its own controller, resulting in a more stable signal and better adaptability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the smoke extraction device in this embodiment;

[0014] Figure 2 for Figure 1 A structural diagram from another angle; Detailed Implementation

[0015] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0016] Please refer to Figure 1-2 This application provides an emergency smoke exhaust device for fire protection, comprising a housing 1, a main exhaust device, a small fan 2, a smoke sensor 3, and a controller 4. The controller can specifically be a microcontroller. The housing 1 is provided with a main air duct 5 and a detection air duct 6. The main exhaust device is disposed on the main air duct 5, and the small fan 2 and the smoke sensor 3 are disposed in the detection air duct 6. The controller 4 is electrically connected to the main exhaust device, the small fan 2, and the smoke sensor 3. The main exhaust device operates according to the detection signal from the smoke sensor 3. Specifically, the small fan is in a normally open operating state, drawing ambient air into the detection air duct. The smoke sensor 3 detects the air in the detection air duct, and when smoke is detected, it feeds back a signal to the controller 4. The controller 4 then instructs the main exhaust device to operate, exhausting indoor air to the outside to prevent smoke accumulation in the indoor environment.

[0017] The main exhaust device includes a motor 7, a motor bracket 8, and a fan blade 9. The motor 7 is fixed in the main air duct 5 by the motor bracket 8, specifically by screws. The fan blade 9 is connected to the rotating shaft of the motor 7. The motor 7 drives the fan blade to rotate, drawing indoor air to the outside.

[0018] A normally closed check valve 10 is installed at the air outlet of the main air duct 5. The check valve 10 can be opened when the main exhaust device is working. When the main exhaust device is not working, the check valve closes the air outlet of the main air duct to prevent foreign objects from entering the room through the main air duct 5.

[0019] The outer wall of the housing 1 is circumferentially distributed with multiple positioning blocks 11. The positioning blocks 11 have mounting holes 12. The reserved holes are opened on the wall. The main air duct is installed into the reserved hole, the positioning hole 11 abuts against the edge of the reserved hole, and then the expansion screws are installed and fixed.

[0020] The outer side of the housing 1 is provided with a control box 13, which is fixed to the housing 1 by screws. The controller 4 is located inside the control box 13 and has a power cord 14 connected to the control box 13. The controller protects the controller and prevents dust.

[0021] Both the air inlet of the main air duct 5 and the air inlet of the detection air duct 6 are equipped with air inlet grilles. The air inlet grilles serve as safety protection to prevent foreign objects or people from coming into contact with the fan blades.

[0022] The controller 4 has an alarm module that issues an alarm based on the detection signal from the smoke sensor 3. Specifically, the alarm module can be an audible and visual alarm. When the smoke sensor detects smoke, the alarm module issues an alarm to remind people.

[0023] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A fire emergency smoke evacuation device characterized by: The device includes a housing (1), a main exhaust device, a small fan (2), a smoke sensor (3), and a controller (4). The housing (1) is provided with a main air duct (5) and a detection air duct (6). The main exhaust device is located on the main air duct (5), and the small fan (2) and the smoke sensor (3) are located in the detection air duct (6). The controller (4) is electrically connected to the main exhaust device, the small fan (2), and the smoke sensor (3). The main exhaust device operates according to the detection signal of the smoke sensor (3).

2. A smoke evacuation device for use in firefighting according to claim 1, characterised in that: The main exhaust device includes a motor (7), a motor bracket (8), and a fan blade (9). The motor (7) is fixed in the main air duct (5) through the motor bracket (8), and the fan blade (9) is connected to the rotating shaft of the motor (7).

3. The emergency smoke evacuation unit of claim 1, wherein: The main air duct (5) is equipped with a normally closed check valve (10) at the air outlet. The check valve (10) can be opened when the main exhaust device is working.

4. The emergency smoke evacuation unit of claim 1, wherein: The outer wall of the housing (1) is provided with a plurality of positioning blocks (11) distributed around the perimeter, and the positioning blocks (11) are provided with mounting holes (12).

5. The emergency smoke evacuation unit of claim 1, wherein: The outer side of the housing (1) is provided with a control box (13), which is fixed to the housing (1) by screws. The controller (4) is located inside the control box (13) and has a power cord (14) connected to the control box (13).

6. The emergency smoke evacuation unit of claim 1, wherein: Both the air inlet of the main air duct (5) and the air inlet of the detection air duct (6) are equipped with air inlet grilles.

7. The emergency smoke evacuation unit of claim 1, wherein: The controller (4) has an alarm module that issues an alarm based on the detection signal from the smoke sensor (3).

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