Sound amplifying tube for bird repelling equipment
By setting up a double-wing, triple-wing and four-wing deflector in the burner to form a spiral channel, the problem of insufficient sound pressure of the existing gas cannon is solved, achieving a stronger sound pressure and a significantly improved bird-repellent effect.
Patent Information
- Application Number
- CN202422197511.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-07
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-07
AI Technical Summary
The insufficient sound pressure of existing gas cannons leads to poor shock effects on birds and is susceptible to external environments.
The burner is equipped with a double-wing, three-wing and four-wing guide frame in turn, forming two-, three-, and four-way spiral channels, so that the sound pressure level of the burner air flow gradually increases in the burner, thereby increasing the sound pressure.
Through enhanced shock waves and vortex airflow, sound waves with valley echo effect are generated, which significantly improves the bird repelling effect and reduces dependence on the external environment.
Smart Images
Figure CN222997270U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bird repelling devices, and particularly relates to a sound amplifying tube for a bird repelling device. Background Art
[0002] For the existing gas cannon, its barrel is simply divided into a cylindrical combustion chamber and an exhaust pipe for combustion gas. The exhaust pipe for combustion gas is hollow. This kind of barrel structure is simple, the generated sound is small, and the propagation distance is short. The sound pressure generated by it, when tested at a distance of 1 meter from the device, generally does not exceed 135 dB, and the shocking effect on birds is poor; and it is easily affected by external environments (such as wind, air pressure, humidity, etc.). Content of the Utility Model
[0003] In view of this, the utility model provides a sound amplifying tube for a bird repelling device, in which a number of double-wing flow guiding frames, three-wing flow guiding frames, and four-wing flow guiding frames are successively installed in the combustion cylinder, so that the sound pressure level of the combustion airflow is gradually enhanced in the combustion cylinder, thereby greatly enhancing the sound pressure transmitted from the sound amplifying port.
[0004] For this purpose, the present application provides the following technical solutions: A sound amplifying tube for a bird repelling device mainly includes a horn-shaped sound amplifying port, a combustion cylinder, and an air inlet connector. The small end of the sound amplifying port is fixedly connected to the air outlet end of the combustion cylinder. The hollow inner cavity of the combustion cylinder naturally forms a combustion chamber. The air inlet end of the combustion cylinder is fixedly connected to the air inlet connector, and the air inlet end of the air inlet connector is connected to a gas pipeline; the hollow inner cavity of the combustion cylinder naturally forms a combustion chamber. From the air inlet end to the air outlet end of the combustion chamber, two, three, and four spiral channels for the combustion gas input from the air inlet connector to flow through are provided respectively, so that the shock wave formed by the combustion gas is sequentially enhanced when passing through the three spiral channels and then propagates outward from the sound amplifying port.
[0005] Further, fixing frames are fixedly installed at the end parts of the air inlet end and the air outlet end. A support shaft is fixedly connected to the centers of the two fixing frames. A number of flow guiding frames are fixedly penetrated through the support shaft. The flow guiding frames are divided into three types, namely a third flow guiding frame with a double-wing structure provided with two rectangular flow guiding plates, a second flow guiding frame with a three-wing structure provided with three rectangular flow guiding plates, and a first flow guiding frame with a four-wing structure provided with four rectangular flow guiding plates. Each type of flow guiding frame is an axisymmetric structure; the three types of flow guiding frames are divided into three groups and are evenly distributed in the combustion chamber in sequence from the air inlet end to the air outlet end according to the order of the third flow guiding frame group, the second flow guiding frame group, and the first flow guiding frame group. Moreover, the included angle between the flow guiding plates of each adjacent two flow guiding frames in each group is the same, thereby forming two, three, and four successively narrowing spiral channels for the combustion gas to pass through.
[0006] Further, the sound amplifying port and the combustion cylinder are flange-connected.
[0007] The beneficial effects of the present utility model are as follows: In the explosion chamber of the explosion cylinder of the present utility model, two, three, or four spiral channels that are interconnected and run from the air inlet end to the air outlet end are provided. When the explosion gas input from the air inlet joint passes through the two, three, or four spiral channels in sequence, shock waves with a spiral rotation direction are formed. As the channels gradually narrow in sequence, the shock waves are enhanced in sequence. After the shock waves are amplified through the sound amplification port and transmitted out, the generated vortex airflow will also change the ambient air pressure, forming sound waves with the effect of valley echoes, and the bird repelling effect is very obvious. Description of the Drawings
[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0009] Figure 1 It is the front view of the present utility model.
[0010] Figure 2 It is Figure 1 the G-G cross-sectional view of
[0011] Figure 3 It is Figure 2 the side view of the third flow guide frame in
[0012] Figure 4 It is Figure 2 the side view of the second flow guide frame in
[0013] Figure 5 It is Figure 2 the side view of the first flow guide frame in
[0014] Figure 6 It is Figure 2 the A-A cross-sectional view of
[0015] Figure 7 It is Figure 2 the B-B cross-sectional view of
[0016] Figure 8 It is Figure 2 the C-C cross-sectional view of
[0017] Figure 9 It is Figure 2 the E-E cross-sectional view of
[0018] Figure 10 It is Figure 2 the D-D cross-sectional view of
[0019] In the figure: 1. Sound amplification port; 2. First flange; 3. Second flange; 4. Combustion explosion cylinder; 4.1. Cylinder bottom; 4.2. Combustion explosion chamber; 5. First flow guide frame; 6. Second flow guide frame; 7. Third flow guide frame; 8. Air inlet joint; 9. First fixing frame; 10. Support shaft; 11. Second fixing frame. Specific implementation manners
[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.
[0021] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way serves as any limitation to the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0022] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0023] The present utility model provides an amplifying tube for a bird repelling device, as Figure 1 shown, which is integrally divided into three parts, namely a sound amplification port 1, a combustion explosion device and an air inlet joint 8.
[0024] As Figure 1 , 2 , 10 shown, the sound amplification port is a horn-shaped structure with an annular cross-section, and its small end is fixedly connected to the air outlet end of the combustion explosion cylinder 4 in the combustion explosion device. The interface needs to be sealed to prevent the leakage of combustion explosion gas.
[0025] As Figure 1 , 2 , 9 shown, the air inlet joint is a circular tubular structure, its air inlet end is connected to a gas pipeline (not shown in the figure), and its air outlet end is communicated with the combustion explosion tube through the cylinder bottom 4.1 of the combustion explosion tube, and the air inlet joint is fixedly connected to the cylinder bottom by welding.
[0026] As shown Figure 2 - 10 in the figure, the detonation device includes a cylindrical detonation cylinder, and a hollow detonation chamber 4.2 is naturally formed inside the detonation cylinder. At one end of the detonation cylinder connected to the sound amplification port, a second fixing bracket 11 is welded and connected inside (see Figure 2 , 10 ); at one end of the detonation cylinder connected to the air inlet joint, a first fixing bracket 9 is welded and connected inside (see Figure 2 , 9 ). A support shaft 10 is fixedly connected at the center of the two fixing brackets, and the support shaft lies horizontally at the axis of the detonation chamber.
[0027] As shown Figure 2 , 3 and 6, the detonation chamber is equally divided into three regions, namely X, Y, and Z; 18 third flow guiding brackets 7 are fixedly penetrated on the support shaft in the Z region, and every two third flow guiding brackets differ by the same angle from right to left. Specifically, the third flow guiding bracket is a double-wing structure that is axisymmetric and has two rectangular flow guiding vanes. The 18 third flow guiding brackets form two spiral channels for the detonation gas to flow through in the detonation chamber.
[0028] As shown Figure 2 , 4 and 7, 18 second flow guiding brackets 6 are fixedly penetrated on the support shaft in the Y region, and every two second flow guiding brackets differ by the same angle from right to left. Specifically, the second flow guiding bracket is a three-wing structure that is axisymmetric and has three rectangular flow guiding vanes. The 18 second flow guiding brackets form three spiral channels for the detonation gas to flow through in the detonation chamber.
[0029] As shown Figure 2 , 5 and 8, 18 first flow guiding brackets 5 are fixedly penetrated on the support shaft in the X region, and every two first flow guiding brackets differ by the same angle from right to left. Specifically, the first flow guiding bracket is a three-wing structure that is axisymmetric and has four rectangular flow guiding vanes. The 18 first flow guiding brackets form four spiral channels for the detonation gas to flow through in the detonation chamber.
[0030] It should be noted that the above two, three, and four spiral channels are all interconnected.
[0031] To cope with various airport environments, the connection between the sound amplification port and the detonation tube is made detachable. As shown Figure 1 in the figure, a first flange 2 is welded and fixed at the small end of the sound amplification port, and a second flange 3 is welded and fixed at the air outlet end of the detonation tube. After the two flanges are connected with screws, the sound amplification port and the detonation tube can be connected together.
[0032] In use, when the ignited gas enters the combustion and explosion chamber through the intake joint via the sealed pipeline, it is guided by 54 flow guides (during which combustion and explosion occur), and two, three, and four shock waves with spiral rotation directions are successively formed. The channels for the shock waves to pass through become narrower in sequence, enabling the shock waves to achieve an increasingly enhanced effect. Finally, after being amplified through the sound amplification port at the other end, a sound wave with the effect of valley echo is transmitted.
[0033] The utility model has been tested, and the test results are shown in the following table.
[0034]
[0035] From the actual measurement results of the bird repeller using the sound amplification pipe of the utility model, it can be seen that the sound pressure level at a distance of 1 meter from the sound amplification port is 188 dB, which is much greater than 135 dB of the existing products, and the bird repelling effect has been greatly improved.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A sound amplifying tube for bird-repelling equipment, characterized in that: It mainly includes a trumpet-shaped sound expansion port, a combustion explosion tube and an air inlet joint. The small end of the sound expansion port is fixedly connected to the air outlet end of the combustion explosion tube, the hollow inner cavity of the combustion explosion tube naturally forms a combustion explosion chamber, the air inlet end of the combustion explosion tube is fixedly connected to the air inlet joint, and the air inlet end of the air inlet joint is connected to the gas pipeline; the hollow inner cavity of the combustion explosion tube naturally forms a combustion explosion chamber, and two, three, and four spiral channels are respectively arranged from the air inlet end to the air outlet end of the combustion explosion chamber for the circulation of the combustion explosion gas input from the air inlet joint, so that the shock wave formed by the combustion explosion gas is successively enhanced in passing through the three spiral channels and then propagates outward from the sound expansion port.
2. The sound amplifying tube for bird-repelling equipment according to claim 1, characterized in that: The ends of the air inlet end and the air outlet end are fixedly installed with fixed frames, the centers of the two fixed frames are fixedly connected with a supporting shaft, and a number of guide frames are fixedly installed on the supporting shaft. The guide frames are divided into three types, namely, a third guide frame with two rectangular guide vanes and a double-wing structure, a second guide frame with three rectangular guide vanes and a three-wing structure, and a first guide frame with four rectangular guide vanes and a four-wing structure, each of which is an axially symmetrical structure; the three guide frames are divided into three groups, in the order of the third guide frame group, the second guide frame group, and the first guide frame group, they are evenly distributed in the explosion chamber from the air inlet end to the air outlet end, and the angles between the guide vanes of two adjacent guide frames in each group are the same, thereby forming two, three, and four spiral channels that narrow successively for the passage of combustion and explosion gases.
3. The sound amplifying tube for bird-repelling equipment according to claim 1, characterized in that: The sound expansion port is connected to the explosion tube flange.