Ultra-silence silencer airflow dredging device
By designing an airflow guiding device for an ultra-quiet muffler, and utilizing structures such as guide strips and rotating fan blades to ensure uniform airflow into the muffler, the problem of reduced muffler efficiency caused by uneven airflow is solved, achieving a more efficient muffler effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUAN MIG POWER MACHINERY CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-04-21
AI Technical Summary
Existing silencers have reduced noise reduction efficiency under uneven airflow conditions, requiring airflow guiding devices to ensure uniform airflow.
An airflow guiding device for an ultra-quiet muffler was designed, comprising an airflow guiding channel, a guide strip, an air inlet, an air outlet, a diversion hole, a rotating fan blade, and a polyester fiber sound-absorbing plate. The airflow speed is adjusted by rotation and diversion to ensure that the airflow enters the muffler evenly.
It improves the muffler's noise reduction efficiency, reduces turbulence, lowers noise, and enhances the noise reduction effect.
Smart Images

Figure CN224150436U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airflow guiding device technology, and in particular to an ultra-quiet silencer airflow guiding device. Background Technology
[0002] When industrial pipelines are in use, the airflow inside the pipeline will generate a lot of noise as it passes through the pipeline, which will affect the working condition of the personnel. Therefore, some equipment will be equipped with silencers to reduce noise when the gas passes through.
[0003] However, when existing mufflers are in use, uneven airflow inside the muffler can create local turbulence, which reduces the muffler's noise reduction efficiency. Therefore, it is necessary to install an airflow guiding device in front of the muffler to guide the airflow and make it enter the muffler more evenly and gently, in order to solve the problem of uneven airflow entering the muffler. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies mentioned in the background section by proposing an ultra-quiet silencer airflow guiding device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An ultra-quiet silencer airflow guiding device includes an airflow guiding channel, with flange connectors fixedly installed at both ends of the airflow guiding channel. The inner wall of the airflow guiding channel is provided with multiple sets of guide strips. One end of the inner wall of the airflow guiding channel is provided with an air inlet, which is conical in shape. Multiple flow holes are opened at the end of the air inlet. The other end of the inner wall of the airflow guiding channel is provided with an air outlet, which is solid conical in shape.
[0007] This design allows the airflow to be split when it passes through the air inlet, then rotated by the guide strips, and then split again when it passes through the air outlet, making the airflow more uniform when it enters the muffler and reducing the chance of turbulence.
[0008] Preferably, the end of the air outlet is provided with a mounting bracket, the mounting bracket is cross-shaped, and the four ends of the mounting bracket are fixedly connected to the inner wall of the airflow guiding channel.
[0009] This can improve the stability of the air outlet after installation, thereby improving the performance of the air outlet.
[0010] Preferably, the outer wall of the air outlet is provided with a flow divider plate around its perimeter to divide the airflow;
[0011] It can enable the diffuser to better drive the airflow to be divided, making the airflow distribution more uniform and further improving the noise reduction efficiency of the silencer.
[0012] Preferably, a mounting baffle is provided at the middle position of the inner wall of the airflow guiding channel, and a slot is opened at the middle position of the mounting baffle, and a rotating fan blade is movably installed inside the slot;
[0013] It can make the airflow at the center of the airflow channel rotate after passing through the rotating fan blades, thereby making the airflow rotate and improving the rotation effect of the airflow.
[0014] Preferably, the outer wall of the mounting baffle is provided with a plurality of first airflow holes in a ring around it, and a rotating plate is movably arranged inside the mounting baffle. The end of the rotating plate is provided with a plurality of second airflow holes in a ring around it, and the first airflow holes and the second airflow holes are adapted to each other.
[0015] The flow rate can be adjusted as the airflow passes through the airflow channel, making the airflow more uniform when it enters the silencer.
[0016] Preferably, the outer wall of the rotating plate is provided with a rotating plate, the upper part of the outer wall of the airflow guiding channel is provided with a rotating block, the bottom end of the rotating block is provided with a transmission gear, the transmission gear extends into the interior of the airflow guiding channel, and the transmission gear meshes with a transmission gear ring.
[0017] The rotating block can be rotated to drive the transmission gear, which in turn drives the transmission gear ring, making the rotation of the rotating plate more convenient.
[0018] Preferably, the interior of both the first airflow hole and the second airflow hole is filled with a polyester fiber sound-absorbing board;
[0019] It can silence the airflow, thus reducing the noise level when the device is in use.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] 1. This utility model can cause the airflow to rotate and split when passing through the airflow guiding channel, thereby completing the airflow guidance and making the airflow more uniform when entering the muffler. This reduces the probability of the airflow forming turbulence inside the muffler and improves the working efficiency of the muffler.
[0022] 2. This utility model can drive the transmission gear to rotate by rotating the rotating block, thereby driving the rotating plate to rotate through the transmission gear ring. This causes the second airflow hole on the rotating plate to intersect with the first airflow hole, thereby adjusting the airflow speed and improving the muffler's noise reduction efficiency. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of an airflow guiding device for an ultra-quiet silencer proposed in this utility model;
[0024] Figure 2 for Figure 1 A schematic diagram of the frontal cross-sectional structure;
[0025] Figure 3 for Figure 2 A partial cross-sectional view of the baffle installed in the middle;
[0026] Figure 4 for Figure 2 A schematic diagram of the structure of the central air intake.
[0027] In the diagram: 1. Airflow channel; 2. Flange connector; 3. Guide strip; 4. Air inlet; 5. Air outlet; 6. Mounting bracket; 7. Flow divider; 8. Mounting baffle; 9. First airflow hole; 10. Rotating fan blade; 11. Rotating plate; 12. Second airflow hole; 13. Transmission gear ring; 14. Rotating block; 15. Transmission gear; 16. Flow divider. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Reference Figure 1-4The diagram illustrates an ultra-quiet silencer airflow guiding device. Flange connectors 2 are fixedly installed at both ends of the airflow guiding channel 1, allowing connection to silencers of different specifications and models. Multiple sets of guide strips 3 are then installed on the inner wall of the airflow guiding channel 1. These guide strips 3 are spirally arranged, guiding the airflow as it enters and rotates. An air inlet 4 is installed at one end of the inner wall of the airflow guiding channel 1. The outer wall of the air inlet 4 is fixedly connected to the guide strips 3, while maintaining a certain gap between the end of the guide strips 3 and the inner wall of the airflow guiding channel 1, allowing airflow to be diverted into the channel. Inside the air inlet 4 and the airflow guiding channel 1, the bottom of the air inlet 4 is sealed, and its end is provided with four groups of flow holes 16 to divide the airflow. Then, an air outlet 5 is installed on the other end of the inner wall of the airflow guiding channel 1. The air outlet 5 is solid. At the same time, a mounting bracket 6 is fixedly installed on the end of the air outlet 5. The mounting bracket 6 is cross-shaped, so that the four ends of the mounting bracket 6 are fixedly connected to the inner wall of the airflow guiding channel 1 to complete the fixation of the air outlet 5. Then, six groups of flow plates 7 are fixedly installed on all four sides of the outer wall of the air outlet 5 to divide the outgoing airflow.
[0030] For a detailed description of the first airflow hole 9 in this embodiment, please refer to [link / reference]. Figure 2 and Figure 3 A mounting baffle 8 is fixedly installed at the center of the airflow channel 1. A slot is formed at the center of the inner wall of the mounting baffle 8. A rotating fan blade 10 is then movably mounted inside the slot via a rotating shaft, allowing the airflow to rotate as it passes over the blade. Multiple sets of first airflow holes 9 are then formed in a ring around the outer wall of the mounting baffle 8. A rotating plate 11 is placed inside the ring groove of the mounting baffle 8. Multiple sets of second airflow holes 12 are then formed in a ring around the outer wall of the rotating plate 11, corresponding to the first airflow holes 9. The outer wall of the rotating plate 11 extends into the airflow channel 1. Inside the rotating plate 11, a transmission gear ring 13 is then installed on the side of the rotating plate 11. At the same time, a rotating block 14 is placed on the top of the outer wall of the airflow channel 1. The bottom end of the rotating block 14 extends through the outer wall of the airflow channel 1 to the inside of the airflow channel 1, so that a transmission gear 15 is fixedly installed on the bottom end of the rotating block 14. The transmission gear 15 is located on the side of the transmission gear ring 13 and meshes with the teeth of the transmission gear ring 13, so that the rotation of the transmission gear 15 can drive the transmission gear ring 13 to rotate, thereby allowing the rotating plate 11 to rotate. Finally, the inner walls of the first airflow hole 9 and the second airflow hole 12 are filled with polyester fiber sound-absorbing panels, which can absorb the sound of the airflow and make the noise reduction effect better.
[0031] Working principle: When in use, the flange connectors 2 at both ends of the airflow guiding channel 1 are connected to the airflow inlet and the airflow inlet of the muffler, respectively. This allows the airflow to enter the interior of the airflow guiding channel 1 through the air inlet 4 at the end of the airflow guiding channel 1. When the airflow comes into contact with the air inlet 4, part of the airflow enters the interior of the airflow guiding channel 1 through the gap between the air inlet 4 and the airflow guiding channel 1, while the other part enters the interior of the airflow guiding channel 1 after being diverted by the diversion hole 16. This allows the airflow to enter through the gap and better contact with the guide strip 3, thereby generating rotation and forward movement. At the same time, it drives part of the diverted airflow to rotate. Subsequently, the airflow rotates after passing through the rotating fan blade 10.
[0032] Rotating the rotating block 14 can drive the transmission gear 15 to rotate, and the transmission gear 15 drives the transmission gear ring 13 to rotate, which in turn drives the rotating plate 11 to rotate. This causes the second airflow hole 12 on the rotating plate 11 to intersect and overlap with the first airflow hole 9, which can regulate the speed of airflow. This makes the airflow move more evenly to the other end of the airflow guiding channel 1, and then be divided by the diverter plate 7 on the air outlet 5, thus completing the guidance of the airflow and making it more even when it enters the muffler, thereby improving the muffler's noise reduction effect.
[0033] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.
[0034] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
[0035] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, 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 series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. An ultra-quiet silencer air flow guiding device comprising an air flow guiding channel (1), characterized in that, Both ends of the airflow channel (1) are fixedly installed with flange connectors (2). The inner wall of the airflow channel (1) is provided with multiple sets of guide strips (3). One end of the inner wall of the airflow channel (1) is provided with an air inlet (4). The air inlet (4) is conical. The end of the air inlet (4) is provided with multiple sets of flow holes (16). The other end of the inner wall of the airflow channel (1) is provided with an air outlet (5). The air outlet (5) is solid conical.
2. The ultra-quiet silencer airflow guiding device according to claim 1, characterized in that The air outlet (5) is provided with a mounting bracket (6) at its end. The mounting bracket (6) is cross-shaped and its four ends are fixedly connected to the inner wall of the airflow channel (1).
3. The airflow guiding device of claim 1, wherein the airflow guiding device is configured to direct the airflow in a direction that is substantially perpendicular to the direction of the airflow. 5 The outer wall of the air outlet (5) is provided with a flow divider (7) to divide the airflow.
4. The airflow guiding device for an ultra-quiet silencer according to claim 1, characterized in that, An installation baffle (8) is provided at the middle position of the inner wall of the airflow channel (1), and a slot is provided at the middle position of the installation baffle (8), and a rotating fan blade (10) is movably installed inside the slot.
5. A super-silent muffler airflow guiding device according to claim 4, characterized in that, The outer wall of the mounting baffle (8) is provided with a plurality of first airflow holes (9) in a ring around it. The mounting baffle (8) is provided with a rotating plate (11) inside it. The end of the rotating plate (11) is provided with a plurality of second airflow holes (12) in a ring around it. The first airflow holes (9) and the second airflow holes (12) are adapted to each other.
6. A super-silent muffler airflow guiding device according to claim 5, characterized in that, The outer wall of the rotating plate (11) is provided with a rotating plate (11), and the upper part of the outer wall of the airflow channel (1) is provided with a rotating block (14). The bottom end of the rotating block (14) is provided with a transmission gear (15). The transmission gear (15) extends into the interior of the airflow channel (1). The transmission gear (15) meshes with the transmission gear ring (13).
7. A super-silent muffler airflow guiding device according to claim 6, characterized in that, The interior of the first airflow hole (9) and the second airflow hole (12) is filled with polyester fiber sound-absorbing panels.