A low noise LC output filtered reactor

Abstract

This utility model relates to the field of reactor technology, and more particularly to a low-noise LC output filter reactor, comprising a base mounted on the ground and a reactor body. A rubber shock-absorbing pad is placed between the reactor body and the base. A soundproof cover is installed on the top of the base. A square heat dissipation mesh is formed at the lower part of the side wall of the soundproof cover, and a circular heat dissipation mesh is formed at the top of the soundproof cover. The inner side of the square heat dissipation mesh is lined with porous sound-absorbing cotton, and a low-speed fan is fixedly installed on the outer side of the circular heat dissipation mesh. This utility model, by placing a rubber shock-absorbing pad between the reactor body and the base, can effectively buffer the electromagnetic vibration generated during reactor operation. Simultaneously, the soundproof cover further isolates noise transmission. Combined with the porous sound-absorbing cotton inside the square heat dissipation mesh and the circular sound-absorbing cotton inside the circular heat dissipation mesh, noise transmitted through the heat dissipation mesh can be absorbed, significantly reducing the overall noise level and effectively improving the comfort of the working environment.

Description

Technical Field

[0001] This utility model relates to the field of reactor technology, and in particular to a reactor with low-noise LC output filtering. Background Technology

[0002] In modern power electronic systems, devices such as frequency converters and inverters are widely used in industrial automation, new energy power generation, and electric vehicle charging. LC output filter reactors, as an indispensable component of power electronic equipment, are mainly used to suppress harmonic components in the output current, stabilize the output voltage, and improve power quality. With the continuous increase in power density and operating frequency of power electronic devices, the electromagnetic interference problems they generate are becoming increasingly serious, placing higher demands on the noise control of reactors.

[0003] In actual operation, traditional LC output filter reactors generate electromagnetic vibrations, which are transmitted to the surrounding environment through the reactor's structure, resulting in significant noise. This not only affects the comfort of the working environment but may also disturb the lives of nearby residents. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing reactors, which generate electromagnetic vibrations during operation. These vibrations are transmitted to the surrounding environment through the reactor's structure, resulting in significant noise. This not only affects the comfort of the working environment but may also disturb the lives of nearby residents. Therefore, this invention proposes a low-noise LC output filter reactor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-noise LC output filter reactor includes a base mounted on the ground and a reactor body. A rubber shock-absorbing pad is provided between the reactor body and the base. A soundproof cover is installed on the top of the base. A square heat dissipation mesh is provided at the lower part of the side wall of the soundproof cover. A circular heat dissipation mesh is provided on the top of the soundproof cover. The inner side of the square heat dissipation mesh is provided with porous sound-absorbing cotton. A low-speed fan is fixedly installed on the outer side of the circular heat dissipation mesh.

[0007] Preferably, the reactor body is bolted through a rubber damping pad and threadedly connected to the base.

[0008] Preferably, the top of the base has a slot that is adapted to the shape of the soundproof cover and slides into it.

[0009] Preferably, a sealing gasket is fixedly installed inside the slot, and the sealing gasket is adapted to the shape of the slot.

[0010] Preferably, the outer side of the base is provided with a pin hole, which is connected to the slot, and the side wall of the soundproof cover is provided with a threaded hole that matches the pin hole, and a slotted bolt is installed at the pin hole position.

[0011] Preferably, a dustproof metal mesh is fixedly installed on the outer side of the square heat dissipation mesh, self-tapping screws are installed around the porous sound-absorbing cotton, and a circular sound-absorbing cotton is installed on the inner side of the circular heat dissipation mesh by self-tapping screws.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In use, this utility model can effectively buffer the electromagnetic vibrations generated by the reactor during operation by setting a rubber shock-absorbing pad between the reactor body and the base, reducing the transmission of vibrations to the ground and the surrounding environment, and reducing noise generation at the source. At the same time, the soundproof cover further isolates noise transmission. Combined with the porous sound-absorbing cotton on the inside of the square heat dissipation mesh and the circular sound-absorbing cotton on the inside of the circular heat dissipation mesh, noise that passes through the heat dissipation mesh can be absorbed, significantly reducing the overall noise level, effectively improving the comfort of the working environment, and reducing interference with the lives of surrounding residents.

[0014] 2. In use, this utility model ensures airflow for the reactor during operation through the square heat dissipation mesh at the lower part of the side wall and the circular heat dissipation mesh at the top of the soundproof cover, facilitating heat dissipation. The low-speed fan fixedly installed on the outside of the circular heat dissipation mesh accelerates airflow, further enhancing the heat dissipation effect, ensuring that the reactor maintains a good operating temperature while operating with low noise, extending the reactor's service life, and improving equipment stability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a reactor for low-noise LC output filtering proposed in this utility model;

[0016] Figure 2 A three-dimensional structural diagram of the base and reactor body of a low-noise LC output filter reactor proposed in this utility model;

[0017] Figure 3 This is a cross-sectional view of the soundproof enclosure of the reactor for a low-noise LC output filter reactor proposed in this utility model;

[0018] Figure 4 This is a top view of the inner wall of the soundproof cover 3 of a reactor for a low-noise LC output filter proposed in this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of a slotted bolt for a low-noise LC output filter reactor proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Reactor body; 3. Soundproof cover; 4. Square heat dissipation mesh; 5. Circular heat dissipation mesh; 6. Porous sound-absorbing cotton; 7. Low-speed fan; 8. Rubber shock-absorbing pad; 9. Slot; 10. Pin hole; 11. Threaded hole; 12. Flathead screw; 13. Self-tapping screw; 14. Dustproof metal mesh; 15. Circular sound-absorbing cotton. Detailed Implementation

[0021] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-5 A low-noise LC output filter reactor includes a base 1 mounted on the ground and a reactor body 2. A rubber shock-absorbing pad 8 is provided between the reactor body 2 and the base 1. The reactor body 2 is threadedly connected to the base 1 by bolts passing through the rubber shock-absorbing pad 8.

[0023] The rubber shock-absorbing pad 8 between the reactor body 2 and the base 1 adopts a three-layer composite structure (upper layer neoprene rubber, middle silicone buffer layer, and lower layer EPDM rubber), which can greatly reduce vibration. At the same time, the bolt connection design with optimized pre-tightening force ensures structural stability and avoids excessive compression failure of the rubber pad.

[0024] A soundproof cover 3 is installed on the top of the base 1. A square heat dissipation mesh 4 is provided at the lower part of the side wall of the soundproof cover 3. A circular heat dissipation mesh 5 is provided on the top of the soundproof cover 3. A circular sound-absorbing cotton 15 is installed on the inner side of the circular heat dissipation mesh 5 by self-tapping screws 13. A low-speed fan 7 is fixedly installed on the outer side of the circular heat dissipation mesh 5.

[0025] By using a circular heat dissipation mesh 5 set at the top and a low-speed fan 7 set on the circular heat dissipation mesh 5, the circular heat dissipation mesh 5 adopts an involute guide vane design, which, combined with the low-speed fan 7, forms a negative pressure air duct, so that the internal temperature of the soundproof cover 3 is greatly reduced.

[0026] The inner side of the square heat dissipation mesh 4 is provided with porous sound-absorbing cotton 6, and the outer side of the square heat dissipation mesh 4 is fixedly installed with dustproof metal mesh 14. Self-tapping screws 13 are installed around the porous sound-absorbing cotton 6. All self-tapping screws 13 are equipped with nylon anti-loosening washers to avoid abnormal noise caused by vibration.

[0027] The square heat dissipation mesh 4 uses a hexagonal honeycomb array with a pore size of 5mm and together with the circular heat dissipation mesh 5, it forms a circulating air duct. Outside cold air is drawn in from the square heat dissipation mesh 4 and finally discharged from the circular heat dissipation mesh 5. The dustproof metal mesh 14 can filter most of the dust. The porous sound-absorbing cotton 6 is made of the same material as the circular sound-absorbing cotton 15 and can greatly absorb the noise generated by the reactor body 2.

[0028] The top of the base 1 has a slot 9, which is adapted to the shape of the soundproof cover 3 and slides in fit. A sealing gasket is fixedly installed inside the slot 9, and the sealing gasket is adapted to the shape of the slot 9. The outer side of the base 1 has a pin hole 10, which is connected to the slot 9. The side wall of the soundproof cover 3 has a threaded hole 11 that is adapted to the pin hole 10. A slotted bolt 12 is installed at the position of the pin hole 10.

[0029] The open end of the soundproof cover 3 is inserted downward into the slot 9. The sealing gasket makes the connection between the soundproof cover 3 and the slot 9 tighter. When the threaded hole 11 corresponds to the pin hole 10, the flat bolt 12 is passed through the pin hole 10 and threadedly connected to the threaded hole 11, thereby realizing the quick assembly and disassembly of the soundproof cover 3.

[0030] It should be noted that the specific model and specifications of the low-speed fan 7 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here. All of them can be powered by external devices and controlled to turn on and off.

[0031] Working principle:

[0032] First, the reactor body 2 is fixed to the base 1 with bolts optimized for preload. The bolts pass through three layers of composite rubber damping pads 8 (upper layer neoprene rubber, middle silicone buffer layer, and lower layer EPDM rubber) to achieve a damping connection. Then, the open end of the soundproof cover 3 is aligned with the slot 9 of the base 1 and inserted. After the threaded hole 11 on the side wall is aligned with the pin hole 10, the flathead bolt 12 is screwed in to complete the fixation. At this time, the sealing gasket ensures the seal between the cover and the base 1. After the power of the low-speed fan 7 is turned on, the fan creates negative pressure through the involute guide vanes of the circular heat dissipation mesh 5. External cold air enters the cover after being filtered by the hexagonal honeycomb array of the square heat dissipation mesh 4 and the dustproof metal mesh 14. The hot air is discharged from the top, and the porous sound-absorbing cotton 6 and the circular sound-absorbing cotton 15 absorb the operating noise simultaneously.

[0033] During maintenance, the soundproof cover 3 can be removed by unscrewing the flathead bolt 12, exposing the reactor body 2 for inspection. In daily operation, the dustproof metal mesh 14 prevents dust from entering, and the nylon anti-loosening washers prevent the self-tapping screws 13 from loosening due to vibration. Three layers of rubber shock-absorbing pads 8 continuously buffer vibration, and the circulating airflow formed by the low-speed fan 7 and the double heat dissipation mesh maintains stable internal temperature, ensuring the reactor operates long-term in a low-noise, dustproof, and well-ventilated environment.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-noise LC output filter reactor, comprising a base (1) mounted on the ground and a reactor body (2), characterized in that, A rubber shock-absorbing pad (8) is provided between the reactor body (2) and the base (1). A soundproof cover (3) is installed on the top of the base (1). A square heat dissipation mesh (4) is provided at the lower part of the side wall of the soundproof cover (3). A circular heat dissipation mesh (5) is provided on the top of the soundproof cover (3). A porous sound-absorbing cotton (6) is provided on the inner side of the square heat dissipation mesh (4). A low-speed fan (7) is fixedly installed on the outer side of the circular heat dissipation mesh (5).

2. The reactor for low-noise LC output filtering according to claim 1, characterized in that, The reactor body (2) is threadedly connected to the base (1) by bolts passing through the rubber damping pad (8).

3. The reactor for low-noise LC output filtering according to claim 1, characterized in that, The top of the base (1) is provided with a slot (9), which is adapted to the shape of the soundproof cover (3) and slides in fit.

4. The reactor for low-noise LC output filtering according to claim 3, characterized in that, A sealing gasket is fixedly installed inside the slot (9), and the sealing gasket is adapted to the shape of the slot (9).

5. The reactor for low-noise LC output filtering according to claim 3, characterized in that, The base (1) has a pin hole (10) on its outer side, and the pin hole (10) is connected to the slot (9). The side wall of the soundproof cover (3) has a threaded hole (11) that matches the pin hole (10). A slotted bolt (12) is installed at the pin hole (10).

6. The reactor for low-noise LC output filtering according to claim 1, characterized in that, The square heat dissipation mesh (4) is fixedly installed with a dustproof metal mesh (14) on the outside. The porous sound-absorbing cotton (6) is installed with self-tapping screws (13) around its perimeter. The circular heat dissipation mesh (5) is installed with a circular sound-absorbing cotton (15) on its inner side by self-tapping screws (13).

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