Fire-fighting smoke exhaust ventilator with air filtering function
By adopting a two-stage filtration structure and easy disassembly design in the fire smoke exhaust fan, the problem of lack of air filtration in traditional fire smoke exhaust fans is solved, achieving efficient and stable air purification effect and reducing maintenance difficulty and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JINGHENG ELECTROMECHANICAL EQUIP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional fire smoke exhaust fans lack air filtration functions, causing harmful substances in the smoke to be directly discharged, polluting the environment and increasing the risk of smoke backflow, affecting rescue efficiency and personnel safety.
It adopts a two-stage filtration structure, including a primary filter and a secondary filter, which respectively intercept larger and smaller particles. Combined with a convenient disassembly design, it ensures that the filter components are easy to clean and replace.
It improves air filtration efficiency, reduces pollutants in exhaust smoke, reduces harm to the environment and human health, ensures the durability and stability of filtration effect, and reduces maintenance costs.
Smart Images
Figure CN224261874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire smoke exhaust technology, and in particular to a fire smoke exhaust fan with air filtration function. Background Technology
[0002] In fire rescue and fire prevention, smoke exhaust and ventilation are crucial. When a fire occurs, a large amount of smoke is generated. This smoke contains a large number of harmful gases and fine particles, such as carbon monoxide, sulfur dioxide, and soot. If this smoke cannot be exhausted in a timely and effective manner, it will not only seriously affect the visibility and movement of rescuers and increase the difficulty of rescue, but also pose a great threat to the lives of trapped people, causing them to be poisoned and suffocated by inhaling harmful smoke.
[0003] However, traditional fire smoke exhaust fans still have the following shortcomings: Traditional fire smoke exhaust fans have a relatively simple function, only possessing basic smoke exhaust capabilities and lacking effective air filtration devices. This allows the exhaust smoke to directly enter the external environment, and the harmful substances in it will pollute the surrounding environment. At the same time, it is also easy to form smoke backflow inside the building, causing smoke to accumulate indoors and failing to achieve the ideal smoke exhaust effect. Therefore, we have introduced a fire smoke exhaust fan with air filtration function. Utility Model Content
[0004] The main purpose of this utility model is to provide a fire smoke exhaust fan with air filtration function, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A fire-fighting smoke exhaust ventilator with air filtration function includes a smoke exhaust duct, a smoke inlet hood fixedly connected to the lower end of the smoke exhaust duct, three fixing blocks fixedly connected to the middle of the outer surface of the smoke exhaust duct, each of the three fixing blocks having a through-hole at its upper end, an exhaust assembly fixedly installed on the upper part of the inner wall of the smoke exhaust duct, an inward and outward through-hole mounting groove on the lower part of the outer surface of the smoke exhaust duct, a connecting sleeve groove on the lower part of the inner wall of the smoke exhaust duct, a filter assembly movably engaged in the mounting groove, and a smoke exhaust assembly fixedly connected to the upper end of the smoke exhaust duct.
[0007] The filter assembly includes a mounting frame, the inner wall of which is embedded with a primary filter screen, a handle is fixedly connected to the front end of the mounting frame, and a connecting sleeve is fixedly connected to the rear of the outer surface of the mounting frame.
[0008] Preferably, the mounting frame is movably engaged in the mounting slot, and the connecting sleeve is movably engaged in the connecting slot.
[0009] By adopting the above technical solution: after a period of use, the primary filter of the fire exhaust fan will intercept a large number of smoke particles and impurities, thus affecting the filtration effect and ventilation efficiency. Since the mounting frame is movably engaged in the mounting slot and the connecting sleeve is movably engaged in the connecting slot, the operator only needs to apply a certain amount of external force to easily pull the mounting frame out of the mounting slot. This convenient disassembly method greatly shortens the time required to clean the primary filter and improves the work efficiency of equipment maintenance.
[0010] Preferably, the exhaust assembly includes a mounting block, three mounting rods are fixedly connected to the outer surface of the mounting block, a rotary motor is fixedly installed at the lower end of the mounting block, a rotor is fixedly installed at the output end of the rotary motor, a plurality of fan blades are fixedly connected to the outer surface of the rotor, and the ends of the three mounting rods away from the center of the mounting block are all fixedly connected to the inner wall of the exhaust ventilation pipe.
[0011] By adopting the above technical solution, three mounting rods are fixedly connected to the outer surface of the mounting block and connected to the inner wall of the smoke exhaust ventilation pipe, forming a stable triangular support structure.
[0012] Preferably, a plurality of fan blades are arranged in a circular array around the center of the rotating head, and each of the fan blades has a gap with the inner wall of the exhaust ventilation duct.
[0013] By adopting the above technical solution, several fan blades are arranged in a circular array around the center of the rotating head. This layout allows the fan blades to uniformly stir the air from all directions when rotating.
[0014] Preferably, the smoke exhaust assembly includes a smoke exhaust pipe and a sleeve frame. Connecting pipes are inserted and fixedly connected to the left and right sides of the outer surface of the smoke exhaust pipe. A smoke exhaust hood is fixedly connected to the upper end of the smoke exhaust pipe. A secondary filter screen is embedded in the inner wall of the sleeve frame. The lower ends of the two connecting pipes are inserted and fixedly connected to the upper end of the smoke exhaust ventilation pipe.
[0015] By adopting the above technical solution, after the smoke is initially filtered by the primary filter in the smoke exhaust duct, the secondary filter can perform more refined filtration of the remaining fine particles and harmful pollutants.
[0016] Preferably, the sleeve is movably fitted inside the smoke hood, and the mesh size of the secondary filter is smaller than that of the primary filter.
[0017] By adopting the above technical solution, in addition to larger dust and debris particles being intercepted by the primary filter, there are also a large number of fine smoke particles, harmful microorganisms, and chemical pollutants in the smoke generated by a fire. The secondary filter, with its smaller mesh size, can capture these extremely small pollutants, greatly improving the cleanliness of the exhaust air, effectively reducing environmental pollution, lowering the potential health hazards of smoke to personnel, and providing a safer air environment for the fire rescue site and surrounding areas.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] 1. In this utility model, a two-stage filtration structure is adopted. The first-stage filter in the filtration component can first filter out larger particles in the smoke and preliminarily purify the air, while the second-stage filter in the smoke exhaust component has smaller mesh and can further filter out tiny particles and harmful substances in the smoke. This two-stage filtration method greatly improves the efficiency and quality of air filtration, effectively reduces the pollutant content in the exhaust smoke, and protects the external environment.
[0020] 2. In this utility model, the mounting frame of the filter component is movably engaged in the mounting slot, and the connecting sleeve is movably engaged in the connecting slot, making it easy to pull out of the smoke exhaust ventilation pipe. The frame of the smoke exhaust component is movably engaged in the smoke exhaust hood, so that the primary and secondary filters can be easily disassembled, cleaned, or even replaced after a period of use, ensuring the durability and stability of the filtration effect, while also reducing the maintenance cost and difficulty of the equipment. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of a fire-fighting smoke exhaust fan with air filtration function according to this utility model;
[0022] Figure 2 This is a cross-sectional view of the smoke exhaust duct and smoke inlet hood of a fire-fighting smoke exhaust fan with air filtration function according to this utility model;
[0023] Figure 3 This is a schematic diagram of the overall structure of the exhaust component of a fire smoke exhaust fan with air filtration function according to this utility model;
[0024] Figure 4 This is a schematic diagram of the overall structure of the filter assembly of a fire-fighting smoke exhaust fan with air filtration function according to the present invention;
[0025] Figure 5 This is a schematic diagram of the overall structure of the smoke exhaust component of a fire-fighting smoke exhaust fan with air filtration function according to this utility model.
[0026] In the diagram: 1. Smoke exhaust duct; 2. Smoke inlet hood; 3. Fixing block; 4. Fixing hole; 5. Exhaust assembly; 6. Mounting slot; 7. Connecting sleeve slot; 8. Filter assembly; 9. Smoke exhaust assembly; 51. Mounting block; 52. Mounting rod; 53. Rotary motor; 54. Rotating head; 55. Fan blade; 81. Mounting frame; 82. Primary filter screen; 83. Handle; 84. Connecting sleeve block; 91. Smoke exhaust duct; 92. Sleeve frame; 93. Connecting pipe; 94. Smoke exhaust hood; 95. Secondary filter screen. Detailed Implementation
[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] Please see Figure 1-5 This utility model provides a technical solution:
[0031] A fire-fighting smoke exhaust ventilator with air filtration function includes a smoke exhaust duct 1, a smoke inlet hood 2 fixedly connected to the lower end of the smoke exhaust duct 1, three fixing blocks 3 fixedly connected to the middle of the outer surface of the smoke exhaust duct 1, each of the three fixing blocks 3 having a through fixing hole 4 at its upper end, an exhaust assembly 5 fixedly installed on the upper part of the inner wall of the smoke exhaust duct 1, an inner and outer through mounting groove 6 on the lower part of the outer surface of the smoke exhaust duct 1, a connecting sleeve groove 7 on the lower part of the inner wall of the smoke exhaust duct 1, a filter assembly 8 movably engaged in the mounting groove 6, and a smoke exhaust assembly 9 fixedly connected to the upper end of the smoke exhaust duct 1.
[0032] In this embodiment, the filter assembly 8 includes a mounting frame 81, with a primary filter screen 82 embedded in the inner wall of the mounting frame 81. A handle 83 is fixedly connected to the front end of the mounting frame 81, and a connecting sleeve block 84 is fixedly connected to the rear part of the outer surface of the mounting frame 81. The mounting frame 81 is movably engaged in the mounting slot 6, and the connecting sleeve block 84 is movably engaged in the connecting slot 7. The exhaust assembly 5 includes a mounting block 51, with three mounting rods 52 fixedly connected to the outer surface of the mounting block 51. A rotary motor 53 is fixedly mounted at the lower end of the mounting block 51, and a rotor 54 is fixedly mounted at the output end of the rotary motor 53. A plurality of fan blades 55 are fixedly connected to the outer surface of the rotor 54, and the three mounting rods 52 are located away from the mounting block. One end of each of the 51 centers is fixedly connected to the inner wall of the smoke exhaust duct 1; several fan blades 55 are arranged in a circular array around the center of the rotating head 54, and there are gaps between each of the fan blades 55 and the inner wall of the smoke exhaust duct 1; the smoke exhaust assembly 9 includes a smoke exhaust pipe 91 and a sleeve 92, and connecting pipes 93 are fixedly connected to the left and right sides of the outer surface of the smoke exhaust pipe 91, and a smoke exhaust hood 94 is fixedly connected to the upper end of the smoke exhaust pipe 91; a secondary filter screen 95 is embedded in the inner wall of the sleeve 92, and the lower ends of the two connecting pipes 93 are fixedly connected to the upper end of the smoke exhaust duct 1; the sleeve 92 is movably fitted inside the smoke exhaust hood 94, and the mesh size of the secondary filter screen 95 is smaller than that of the primary filter screen 82.
[0033] It should be noted that this utility model is a fire-fighting smoke exhaust fan with air filtration function. During use, the rotary motor 53 is turned on, and the output end of the rotary motor 53 drives the rotating head 54 to rotate. Several fan blades 55 fixedly connected to the outer surface of the rotating head 54 rotate in a circular array around the center of the rotating head 54, thus starting the smoke exhaust ventilation operation. Under the action of the fan blades 55, smoke enters the smoke exhaust ventilation pipe 1 from the smoke inlet hood 2. The smoke entering the smoke exhaust ventilation pipe 1 first passes through the filter assembly 8. The primary filter screen 82 embedded in the inner wall of the mounting frame 81 filters the larger particles in the smoke. After the primary filtration, the smoke... The smoke continues to rise and reaches the smoke exhaust assembly 9. The secondary filter 95 embedded in the inner wall of the frame 92 further filters the smoke. Since the mesh size of the secondary filter 95 is smaller than that of the primary filter 82, it can filter out smaller particles. The smoke after two stages of filtration is discharged outdoors through the smoke exhaust pipe 91 and the smoke exhaust hood 94. After use, turn off the rotary motor 53, pull the filter assembly 8 out of the mounting slot 6, remove the mounting frame 81 through the handle 83, clean or replace the primary filter 82, and then remove the frame 92 from the smoke exhaust hood 94 to clean or replace the secondary filter 95.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A fire-fighting smoke exhaust fan with air filtration function, comprising a smoke exhaust ventilation pipe (1), characterized in that: The lower end of the smoke exhaust ventilation pipe (1) is fixedly connected to a smoke inlet hood (2). Three fixing blocks (3) are fixedly connected to the middle of the outer surface of the smoke exhaust ventilation pipe (1). The upper end of each of the three fixing blocks (3) has a through-hole (4). An exhaust assembly (5) is fixedly installed on the upper part of the inner wall of the smoke exhaust ventilation pipe (1). An internal and external through-groove mounting slot (6) is opened on the lower part of the outer surface of the smoke exhaust ventilation pipe (1). A connecting sleeve slot (7) is opened on the lower part of the inner wall of the smoke exhaust ventilation pipe (1). A filter assembly (8) is movably engaged in the mounting slot (6). An exhaust assembly (9) is inserted and fixedly connected to the upper end of the smoke exhaust ventilation pipe (1). The filter assembly (8) includes a mounting frame (81), the inner wall of which is embedded with a primary filter screen (82), a handle (83) is fixedly connected to the front end of the mounting frame (81), and a connecting sleeve (84) is fixedly connected to the rear of the outer surface of the mounting frame (81).
2. A fire-fighting smoke exhaust fan with air filtration function according to claim 1, characterized in that: The mounting frame (81) is movably engaged in the mounting slot (6), and the connecting sleeve (84) is movably engaged in the connecting slot (7).
3. A fire-fighting smoke exhaust fan with air filtration function according to claim 1, characterized in that: The exhaust assembly (5) includes a mounting block (51), three mounting rods (52) are fixedly connected to the outer surface of the mounting block (51), a rotary motor (53) is fixedly installed at the lower end of the mounting block (51), a rotor (54) is fixedly installed at the output end of the rotary motor (53), and a number of fan blades (55) are fixedly connected to the outer surface of the rotor (54). The ends of the three mounting rods (52) away from the center of the mounting block (51) are all fixedly connected to the inner wall of the smoke exhaust ventilation pipe (1).
4. A fire-fighting smoke exhaust fan with air filtration function according to claim 3, characterized in that: Several fan blades (55) are arranged in a circular array around the center of the rotating head (54), and there is a gap between each fan blade (55) and the inner wall of the exhaust ventilation pipe (1).
5. A fire-fighting smoke exhaust fan with air filtration function according to claim 1, characterized in that: The smoke exhaust assembly (9) includes a smoke exhaust pipe (91) and a sleeve (92). The left and right sides of the outer surface of the smoke exhaust pipe (91) are both connected to connecting pipes (93). The upper end of the smoke exhaust pipe (91) is fixedly connected to a smoke exhaust hood (94). The inner wall of the sleeve (92) is embedded with a secondary filter screen (95). The lower ends of the two connecting pipes (93) are both connected to the upper end of the smoke exhaust ventilation pipe (1).
6. A fire-fighting smoke exhaust fan with air filtration function according to claim 5, characterized in that: The frame (92) is movably fitted inside the smoke hood (94), and the mesh size of the secondary filter (95) is smaller than that of the primary filter (82).