An electrically controlled variable fin configuration ventilation silencer

Abstract

This utility model discloses an electrically controlled variable-blade configuration ventilation silencer, comprising a silencer housing with an air inlet and an air outlet. Multiple sets of silencing structures are movably arranged inside the silencer housing. Each silencing structure includes two sets of cooperating silencing blades and a flexible connector. The two sets of silencing blades are connected by the connector. The silencer housing also has an adjustment mechanism for adjusting the silencing structures, comprising a lead screw and a drive motor. This utility model, by setting an adjustable silencing structure and electrically controlling the drive motor and adjustment mechanism, allows the silencing blades to flexibly adjust their configuration. During high summer temperatures, it switches to a high-ventilation configuration, while during low nighttime loads, it switches to a high-noise-reduction configuration. It can dynamically balance ventilation, heat dissipation, and noise reduction requirements according to changes in season, temperature, and load, perfectly adapting to complex working conditions and solving the problem of traditional silencers having a "single configuration that cannot meet multiple scenarios."

Description

Technical Field

[0001] This utility model relates to the field of ventilation silencer technology, specifically an electrically controlled variable blade ventilation silencer. Background Technology

[0002] In current noise reduction practices for industrial and commercial equipment, to simultaneously meet the dual needs of equipment ventilation and heat dissipation as well as noise reduction, the industry commonly adopts a solution of installing ventilation silencers at the equipment's air exchange vents or heat dissipation vents. The core noise reduction principle of these silencers lies in absorbing and attenuating circulating noise through their internal sound-absorbing inserts.

[0003] Existing silencer inserts mostly adopt a fixed configuration design. Once the structure is determined, it cannot be adjusted. They can only adapt to the ventilation, heat dissipation and noise reduction requirements of the equipment under a single operating condition. However, in actual operation, the equipment's requirements for ventilation volume, heat dissipation efficiency and noise reduction effect will change dynamically with various factors such as seasonal changes, ambient temperature fluctuations, and changes in operating load. This contradiction between "fixed configuration" and "dynamic requirements" makes it difficult for existing ventilation silencers to maintain optimal performance under complex and changing operating conditions. Utility Model Content

[0004] The purpose of this invention is to provide an electrically controlled variable fin configuration ventilation silencer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An electrically controlled variable-blade configuration ventilation silencer includes a silencer housing with an air inlet and an air outlet. Multiple sets of silencing structures are movably arranged inside the silencer housing. Each silencing structure includes two sets of cooperating silencing blades and a flexible connector. The two sets of silencing blades are connected by the connector. The silencer housing also has an adjustment mechanism for adjusting the silencing structures, which includes a lead screw and a drive motor.

[0006] Preferably, the muffler housing is provided with multiple sets of connecting components inside, and the muffler insert can be swung and disposed inside the muffler housing through the connecting components.

[0007] Preferably, both sides of the muffler housing are provided with housings that communicate with the interior of the housing. Inside the housing, a lead screw is rotatably provided, and multiple sets of lead screw nuts are engaged on the lead screw. A connecting frame is provided on the lead screw nut, and the connecting frame is fixedly connected to one end of the connecting piece. A drive motor is provided outside the housing, and the output end of the drive motor is fixedly connected to one end of the lead screw.

[0008] Preferably, the drive motor is electrically connected to an external control system.

[0009] Preferably, the sound-absorbing insert includes a porous metal frame and sound-absorbing cotton, with the sound-absorbing cotton filling the interior of the porous metal frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model features an adjustable silencing structure. Through the electric control of the drive motor and the adjustment mechanism, the silencing insert can flexibly adjust its configuration. It switches to a high ventilation configuration during high summer temperatures and a high noise reduction configuration during low nighttime loads. It can dynamically balance ventilation, heat dissipation, and noise reduction requirements according to changes in season, temperature, and load, perfectly adapting to complex working conditions and solving the problem of traditional silencers having a "single configuration that cannot meet the needs of multiple scenarios". Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sound-absorbing insert structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the muffler housing of this utility model.

[0012] In the diagram: 1. Silencer housing; 2. Air inlet; 3. Air outlet; 4. Silencing insert; 5. Connector; 6. Housing; 7. Lead screw; 8. Lead screw nut; 9. Connecting frame; 10. Drive motor; 11. Connecting component; 12. Perforated metal frame; 13. Sound-absorbing cotton. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] 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.

[0015] 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.

[0016] Please see Figure 1-3 An electrically controlled variable blade configuration ventilation silencer includes a silencer housing 1, an air inlet 2 and an air outlet 3 respectively provided on the silencer housing 1, and multiple sets of silencing structures movably arranged inside the silencer housing 1. The silencing structure includes two sets of mutually cooperating silencing blades 4 and a flexible connector 5. The two sets of silencing blades 4 are connected by the connector 5. The silencer housing 1 is also provided with an adjustment mechanism for adjusting the silencing structure. The adjustment mechanism includes a lead screw 7 and a drive motor 10. The silencer housing 1 provides a stable mounting frame for components such as the air inlet 2, air outlet 3, silencing structure, and adjustment mechanism, ensuring that the positions of each component are fixed and work together to form a closed airflow space. After the airflow enters from the air inlet 2, it undergoes noise reduction treatment through the internal silencing structure and then exits from the air outlet 3, avoiding airflow leakage that could affect ventilation and noise reduction effects. It also isolates the internal components from external environmental interference, protecting core components such as the silencing insert 4, connector 5, and lead screw 7 from dust, impurities, or external force damage, thus extending the overall service life of the device. The air inlet 2 is the only entrance for external airflow into the silencer, receiving the airflow that the equipment or environment needs to process and stably guiding the airflow into the silencer housing 1, providing an airflow source for subsequent ventilation, heat dissipation, and noise reduction processes. The air outlet 3 is the outlet for the airflow that has undergone silencing treatment to exit the silencer, leading the noise-reduced airflow out of the silencer housing 1 and delivering it to the area of ​​the equipment that needs ventilation and heat dissipation, or discharging it into the external environment, thus achieving the ventilation function.

[0017] Please see Figure 2 and Figure 3 The muffler housing 1 has multiple sets of connecting parts 11 inside. The muffler insert 4 can be swung inside the muffler housing 1 through the connecting parts 11. Both sides of the muffler housing 1 have housings 6 that communicate with the inside. The housing 6 has a lead screw 7 that can be rotatably installed inside. Multiple sets of lead screw nuts 8 are engaged on the lead screw 7. The lead screw nuts 8 are equipped with connecting brackets 9, and the connecting brackets 9 are fixedly connected to one end of the connecting piece 5. The housing 6 has a drive motor 10 installed outside. The output end of the drive motor 10 is fixedly connected to one end of the lead screw 7. The drive motor 10 is electrically connected to an external control system. Multiple sets of silencing inserts 4 are distributed inside the muffler housing 1, forming staggered airflow channels. This extends the residence time of airflow within the muffler, allowing for more sufficient time for noise absorption, while not excessively obstructing airflow. This balances noise reduction and ventilation requirements. The angle can be adjusted by swinging the connecting component 11, changing the airflow channel shape between adjacent silencing inserts 4 to adapt to the dynamic requirements of ventilation volume and noise reduction effect under different operating conditions. The connecting component 5 is a key component connecting the two sets of silencing inserts 4 and cooperating with the adjustment mechanism to achieve configuration adjustment. It is used to stably connect the two sets of cooperating silencing inserts 4, ensuring that the two sets of inserts maintain coordinated action during adjustment. When the adjustment mechanism drives the silencing inserts 4 to swing, the elasticity of the connecting component 5 can adapt to the displacement difference caused by the change in the insert angle, avoiding damage to the inserts or connecting component 11 due to rigid connection. At the same time, it ensures that the inserts can stably maintain the current configuration after adjustment. Body 6 forms independent mounting chambers on both sides of the muffler housing 1 to accommodate adjustment components such as lead screw 7 and lead screw nut 8, avoiding direct contact between the adjustment mechanism and the internal airflow, and preventing dust and impurities in the airflow from affecting the lead screw transmission accuracy. The lead screw 7 rotates around its own axis under the drive of the drive motor 10. Through meshing transmission with the lead screw nut 8, the rotational motion is converted into linear motion of the lead screw nut 8 along the lead screw axis, providing power for the configuration adjustment of the muffler insert 4. One end of the connecting frame 9 is fixed to the lead screw nut 8, and the other end is fixed to one end of the connecting piece 5, forming a force transmission path of "lead screw nut 8 → connecting frame 9 → connecting piece 5 → muffler insert 4", ensuring that the power of the adjustment mechanism can be effectively transmitted to the muffler structure. The connecting piece 11 swings the muffler insert 4 inside the muffler housing 1, so that the muffler insert 4 can rotate around the axis of the connecting piece 11, providing a fulcrum for the adjustment of the insert angle.

[0018] Please see Figure 3 The sound-absorbing insert 4 includes a porous metal frame 12 and sound-absorbing cotton 13, with the sound-absorbing cotton 13 filling the interior of the porous metal frame 12; The porous metal frame 12 provides a rigid frame for the sound-absorbing insert 4, ensuring that the insert maintains its shape stability during airflow impact and configuration adjustment, without deformation or collapse, thus ensuring the integrity of the sound-absorbing structure. The internal space tightly fixes the sound-absorbing cotton 13, preventing it from shifting or falling off under the action of airflow, ensuring the stable operation of the sound-absorbing material. Its porous structure can refract and scatter sound waves in the airflow, extending the propagation path of sound waves in the insert, further enhancing the noise reduction effect in conjunction with the sound-absorbing cotton 13. At the same time, the porous structure does not significantly increase airflow resistance, balancing noise reduction and ventilation performance. The sound-absorbing cotton 13, through its porous and loose structure, converts the sound wave energy propagating in the airflow into heat energy consumption, directly reducing noise intensity, which is the key to the noise reduction function of the sound-absorbing insert 4.

[0019] Working principle: Under high-temperature conditions in summer, the control system issues a command to start the drive motor 10. The output end of the drive motor 10 drives the lead screw 7 to rotate around its own axis. The lead screw 7 meshes with multiple sets of lead screw nuts 8 to transmit the rotational motion, which is converted into linear motion of the lead screw nuts 8 along the lead screw axis. The lead screw nuts 8 drive the connecting frame 9 to move. The connecting frame 9 is fixedly connected to one end of the connecting piece 5, thereby driving the connecting piece 5 to move. Connector 5 connects two sets of cooperating silencer inserts 4. Driven by connector 5, the silencer inserts 4 rotate around the axis of connecting component 11, adjusting to a "large ventilation area, low noise reduction resistance" configuration. The adjustment is completed within a few seconds to meet the equipment's ventilation and heat dissipation requirements under high-temperature conditions. Under low-load and high-noise-reduction requirements at night, the control system commands the drive motor 10 to operate. Through a series of transmissions including lead screw 7, lead screw nut 8, connecting frame 9, and connector 5, the silencer inserts 4 are switched to a "high noise reduction density, moderate ventilation" configuration, ensuring smooth and accurate adjustment to meet the noise reduction requirements under low-load conditions at night.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An electrically controlled variable baffle configuration sound absorber, comprising a sound absorber housing (1), an air inlet (2) and an air outlet (3) are respectively arranged on the sound absorber housing (1), characterized in that: The muffler housing (1) is internally provided with multiple sets of muffler structures. The muffler structure includes two sets of mutually cooperating muffler inserts (4) and a flexible connector (5). The two sets of muffler inserts (4) are connected to each other through the connector (5). The muffler housing (1) is also provided with an adjustment mechanism for adjusting the muffler structure. The adjustment mechanism includes a lead screw (7) and a drive motor (10).

2. An electrically controlled variable vane configuration air flow silencer according to claim 1, wherein: The muffler housing (1) is provided with multiple sets of connecting parts (11), and the muffler insert (4) can be swung inside the muffler housing (1) through the connecting parts (11).

3. An electrically controlled variable vane configuration air flow silencer according to claim 2, wherein: Both sides of the muffler housing (1) are provided with housings (6) that are connected to the interior. Inside the housing (6), a lead screw (7) is rotatably provided. Multiple sets of lead screw nuts (8) are engaged on the lead screw (7). A connecting frame (9) is provided on the lead screw nut (8), and the connecting frame (9) is fixedly connected to one end of the connecting piece (5). A drive motor (10) is provided outside the housing (6), and the output end of the drive motor (10) is fixedly connected to one end of the lead screw (7).

4. An electrically controlled variable vane configuration air flow silencer according to claim 3, wherein: The drive motor (10) is electrically connected to the external control system.

5. An electrically controlled variable vane configuration air flow silencer as defined in claim 1 wherein: The sound-absorbing insert (4) includes a porous metal frame (12) and sound-absorbing cotton (13), with the sound-absorbing cotton (13) filling the interior of the porous metal frame (12).

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