A noise reduction air duct structure

Abstract

This utility model pertains to noise reduction structures, specifically a noise reduction duct structure, comprising a duct body fixed to the air outlet of a device to be noise-reduced, with an exhaust port at one end of the duct body; the duct body includes two side plates fixed to the air outlet of the device to be noise-reduced and a back plate connecting the two side plates, the two side plates and the back plate forming a noise reduction duct, the back plate and the air outlet of the device to be noise-reduced being opposite each other, and the exhaust port being formed by the ends of the two side plates and the back plate; the back plate and the plane of the air outlet of the device to be noise-reduced forming a certain angle, and a clamping plate located inside the noise reduction duct is fixed on the back plate, the clamping plate being parallel to the side plates; a cavity is provided inside the clamping plate, the cavity being filled with sound-absorbing material; through holes are provided on both sides of the clamping plate; this utility model improves the noise reduction effect.

Description

Technical Field

[0001] This utility model pertains to noise reduction structures, specifically a noise reduction air duct structure. Background Technology

[0002] An energy storage container is a complete set of electrical equipment that is being used more and more widely with the development of the new energy industry. Energy storage containers are prefabricated in factories and installed on-site. Compared to conventional containers, energy storage containers effectively reduce the building's footprint, minimize secondary construction, improve production and installation efficiency, lower project costs, and effectively ensure the safety and reliability of the equipment.

[0003] The energy storage module has a compact layout and the site is located close to residential areas. The noise from the energy storage module itself has a significant impact on the surrounding residential areas. Therefore, it is necessary to limit the noise of the energy storage module to reduce its impact.

[0004] The noise primarily originates from the aerodynamic sounds generated by the compressor and fan in the refrigeration system, the switching sounds of internal electronic components, and the electromagnetic noise generated during system operation. Among these, the motor, as a crucial component of the energy storage system, generates electromagnetic and mechanical rotation during operation, making it one of the main noise sources. The energy storage inverter converts the direct current (DC) supplied by the battery into alternating current (AC) for power supply. When the battery is charging, the inverter can also rectify the AC power back to DC. During this current conversion process, a small amount of electrical energy is lost as heat, requiring cooling to prevent overheating. This cooling is typically achieved using fans, which inevitably generate some noise during this process as well.

[0005] The main ways to reduce noise include optimizing equipment, such as using low-noise motors, liquid-cooled inverters instead of air-cooled models and low-noise fans, optimizing layout and structural design, using sound insulation materials, installing rubber vibration damping pads, spring vibration isolators or vibration isolation brackets to suppress vibration transmission and avoid resonance, and optimizing ventilation system design. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a noise reduction air duct structure to improve the noise reduction effect.

[0007] This utility model embodiment provides a noise reduction air duct structure, including an air duct body fixed to the air outlet of the noise reduction device, and an exhaust port provided at the end of the air duct body;

[0008] The air duct body includes two side plates fixed to the air outlet of the noise reduction device and a back plate connecting the two side plates. The two side plates and the back plate enclose each other to form a noise reduction air duct. The back plate and the air outlet of the noise reduction device are arranged opposite to each other. The exhaust port is formed by the ends of the two side plates and the back plate.

[0009] The back plate and the plane where the air outlet of the noise reduction device is located form a certain angle. A clamp plate located in the noise reduction air duct is fixed on the back plate. The clamp plate and the side plate are parallel.

[0010] The clamp has an internal cavity filled with sound-absorbing material; and through holes are provided on both sides of the clamp.

[0011] Preferably, the noise reduction device is an energy storage compartment.

[0012] Preferably, the through holes on the two sides are not on the same straight line.

[0013] Preferably, the through holes on one side and the through holes on the other side do not overlap at all.

[0014] Preferably, the diameter of the through hole is 2-4 mm.

[0015] Preferably, the hole spacing is 2-3 times the hole diameter.

[0016] Preferably, the included angle is 15-45 degrees.

[0017] Preferably, a top plate is provided on the opposite side of the exhaust vent, and the top plate is fixedly connected to the two side plates and the back plate.

[0018] Preferably, the area of ​​the exhaust vent is larger than the area of ​​the top plate.

[0019] Preferably, the exhaust vent is located at the top of the duct body.

[0020] The beneficial effects of this utility model are that it sets a noise reduction duct structure at the air outlet of the noise reduction device. The duct body of the noise reduction duct structure includes two side plates fixed to the air outlet of the noise reduction device and a back plate connecting the two side plates. After the airflow is discharged from the air outlet of the noise reduction device, it first passes through the clamp plate. The clamp plate and the side plates are parallel, so the airflow direction is parallel to the clamp plate. The clamp plate will not obstruct the flow of gas. The sound-absorbing material in the clamp plate and the through holes set on the clamp plate can fully play the role of noise reduction.

[0021] In this invention, the exhaust port and the outlet of the noise reduction device are not on the same straight line. The gas discharged from the outlet of the noise reduction device is blocked by the back plate. The back plate and the plane where the outlet of the noise reduction device is located form a certain angle, thereby reducing resistance. The back plate changes the direction of the gas, and the airflow direction changes by nearly 90 degrees in the overall direction. This effectively extends the sound wave path, improves energy dissipation, promotes sound wave interference cancellation, avoids concentrated propagation of sound energy, and effectively improves the noise reduction effect. Attached Figure Description

[0022] Figure 1 This is an installation diagram of Embodiment 1 of the present utility model.

[0023] Figure 2 This is an installation diagram of Embodiment 2 of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of this utility model.

[0025] Figure 4 This is a side view of the structure of this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the clamping plate of this utility model.

[0027] In the diagram, 1 is the energy storage compartment, 2 is the noise reduction duct structure, 3 is the air outlet of the noise reduction device, 4 is the exhaust vent, 21 is the side plate, 22 is the back plate, 23 is the top plate, 24 is the clamping plate, and 241 is the through hole. Detailed Implementation

[0028] Example 1

[0029] like Figure 3-5 As shown, this utility model includes a duct body fixed to the air outlet 3 of the noise reduction device, and an exhaust port 4 is provided at the end of the duct body.

[0030] The air duct body includes two side plates 21 fixed to the air outlet 3 of the noise reduction device and a back plate 22 connecting the two side plates 21. The two side plates 21 and the back plate 22 enclose each other to form a noise reduction air duct. The back plate 22 and the air outlet 3 of the noise reduction device are arranged opposite to each other. The exhaust port 4 is formed by the ends of the two side plates 21 and the back plate 22.

[0031] The back plate 22 and the plane where the air outlet 3 of the noise reduction device is located form a certain angle. A clamping plate 24 located in the noise reduction air duct is fixed on the back plate 22. The clamping plate 24 and the side plate 21 are parallel.

[0032] The clamping plate 24 has an internal cavity filled with sound-absorbing material; the two sides of the clamping plate 24 are respectively provided with through holes 241.

[0033] The air outlet 3 of the noise reduction device is the air inlet of this utility model. After the gas is discharged from the air outlet 3 of the noise reduction device, it enters the noise reduction air duct, such as... Figure 1-2 As shown, the gas is discharged from left to right, and the airflow direction is the same as that of the clamp 24. After being changed in direction by the back plate 22, it is discharged from the top or bottom.

[0034] The air duct body of this utility model is generally trapezoidal, that is, the back plate 22 and the plane where the air outlet 3 of the noise reduction device is located form a certain angle, such as Figure 1-2As shown, the plane containing the air outlet 3 of the noise reduction device is a vertical plane, and the included angle can be within 90 degrees, preferably 15-45 degrees. Its main purpose is to change the direction of gas flow, altering the airflow direction by nearly 90 degrees in the overall direction, i.e., discharging from the top or bottom (bottom discharge in Example 1, top discharge in Example 2). This effectively extends the sound wave path, improves energy dissipation, promotes sound wave interference cancellation, avoids concentrated sound energy propagation, and effectively improves the noise reduction effect.

[0035] The clamping plate 24 of this invention has an internal cavity filled with sound-absorbing material; through holes 241 are respectively provided on two sides of the clamping plate 24. The clamping plate consists of two panels and side edges surrounding the ends of the panels, with an internal cavity. The sound-absorbing material can be a known sound-absorbing material, such as polyurethane foam, which can effectively absorb sound and reduce noise.

[0036] The clamping plate 24 has through holes 241 on both sides, which can effectively destroy low-frequency standing waves, construct Helmholtz resonance sound absorption, reduce airflow regeneration noise, balance air pressure to prevent deformation, heat dissipation to assist noise reduction and reduce structural weight.

[0037] The clamping plate 24 and the side plate 21 are parallel, that is, the direction of the clamping plate 24 is parallel to the direction of gas flow. This can maintain the stability of the flow field, prevent regenerated noise, guide sound waves into the sound-absorbing layer, avoid sound wave reflection interference, and work with the through hole 241 to achieve the Helmholtz resonance effect and absorb specific low-frequency noise.

[0038] The noise reduction device is an energy storage chamber, and other suitable devices of this utility model are also the objects of noise reduction of this utility model.

[0039] The through holes 241 on the two sides are not on the same straight line. More preferably, the through holes 241 on one side and the through holes 241 on the other side do not overlap at all. In this case, the through holes 241 on one side are the plate material between the through holes 241 on the other side. This can effectively disrupt the straight sound wave propagation path, hinder the straight flow of high-speed airflow, and prevent the airflow from passing through in a straight line and generating regenerated noise (such as whistling). The misaligned holes induce the airflow to form turbulence in the cavity, reduce the flow velocity and consume energy.

[0040] The diameter of the through hole 241 is 2-4mm, and the hole spacing of the through hole 241 is 2-3 times the diameter of the through hole 241, which takes into account both lightweight and noise reduction effect.

[0041] A top plate 23 is provided on the opposite side of the exhaust vent 4, and the top plate 23 is fixedly connected to two side plates 21 and a back plate 22. The presence of the top plate 23 helps to prevent the formation of sharp areas that may cause backflow in the noise reduction channel, thereby improving the noise reduction effect.

[0042] The area of ​​the exhaust vent 4 is larger than the area of ​​the top plate 23, which can effectively reduce wind resistance.

[0043] Example 2

[0044] like Figure 2 As shown, the exhaust port 4 is located at the top of the air duct body, which can prevent hot air backflow and prevent the hot air exhausted from the cold air drawn in by the refrigeration unit from being drawn in again.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0046] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A noise reducing air duct structure, characterized by, Includes a duct body fixed to the air outlet (3) of the noise reduction device, and an exhaust port (4) is provided at the end of the duct body. The air duct body includes two side plates (21) fixed to the air outlet (3) of the noise reduction device and a back plate (22) connecting the two side plates (21). The two side plates (21) and the back plate (22) enclose each other to form a noise reduction air duct. The back plate (22) and the air outlet (3) of the noise reduction device are arranged opposite to each other. The exhaust port (4) is formed by the ends of the two side plates (21) and the back plate (22). The back plate (22) and the plane containing the air outlet (3) of the noise reduction device are at a certain angle. A clamp (24) located in the noise reduction air duct is fixed on the back plate (22). The clamp (24) and the side plate (21) are parallel. The clamp (24) has a cavity inside, which is filled with sound-absorbing material; the clamp (24) has through holes (241) on its two sides respectively.

2. The noise reduction duct structure as described in claim 1, characterized in that, The noise reduction device is an energy storage compartment.

3. The noise reduction duct structure as described in claim 1, characterized in that, The through holes (241) on the two sides are not on the same straight line.

4. The noise reduction duct structure as described in claim 3, characterized in that, The through hole (241) on one side and the through hole (241) on the other side do not overlap at all.

5. The noise reduction duct structure as described in claim 1, characterized in that, The diameter of the through hole (241) is 2-4 mm.

6. The noise reduction duct structure as described in claim 5, characterized in that, The hole spacing of the through hole (241) is 2-3 times the diameter of the through hole (241).

7. The noise reduction duct structure as described in any one of claims 1-6, characterized in that, The included angle is 15-45 degrees.

8. The noise reduction duct structure as described in any one of claims 1-6, characterized in that, A top plate (23) is provided on the opposite side of the exhaust vent (4), and the top plate (23) is fixedly connected to the two side plates (21) and the back plate (22).

9. The noise reduction duct structure as described in claim 8, characterized in that, The area of ​​the exhaust vent (4) is larger than the area of ​​the top plate (23).

10. The noise-reducing air duct structure as described in claim 9, characterized in that, The exhaust vent (4) is located at the top of the duct body.

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