A sound insulation and noise reduction door plate of a compressor case

Abstract

This utility model discloses a soundproof and noise-reducing door panel for a compressor housing, including an outer baffle, a metal frame, and a soundproof panel. The metal frame is fixedly connected to the outer baffle, and the soundproof panel is disposed on the outer baffle. The soundproof panel has a pressure plate, and the soundproof panel is located between the pressure plate and the outer baffle. Two plastic brackets are fixedly installed on the metal frame, and the two plastic brackets are respectively located at both ends of the pressure plate. Threaded sleeves are fixedly connected to the plastic brackets, and connecting screws are threaded onto the threaded sleeves. The connecting screws are fixedly connected to pressure blocks, and the pressure blocks are engaged with the side of the pressure plate away from the soundproof panel. The beneficial effects of this utility model are: the door panel has a simple and reliable structure, and while possessing good protective functions, it can more effectively block the propagation of sound waves generated during compressor operation, reducing noise diffusion.

Description

Technical Field

[0001] This utility model relates to the technical field of door panels, specifically to a sound-insulating and noise-reducing door panel for a compressor housing. Background Technology

[0002] Compressor units are commonly used in various fields such as chemical engineering, refrigeration, engineering construction, and mining, providing compressed air for various equipment. During operation, compressor units generate significant noise. This noise not only severely disrupts the working environment, affecting the physical and mental health and work efficiency of employees, but may also cause noise pollution to the surrounding environment.

[0003] Chinese utility model patent CN223018937U discloses a soundproof enclosure for a screw compressor. It includes a base plate, side plates, a front plate assembly, a rear plate assembly, a top plate assembly, and sound-absorbing cotton disposed on the inner walls of the aforementioned components. The front plate assembly includes a high-frequency operating plate in the center and mid-frequency operating plates on either side of the high-frequency operating plate. The top edge and the side of the mid-frequency operating plate away from the high-frequency operating plate fold inwards. The side of the mid-frequency operating plate facing the high-frequency operating plate folds inwards and outwards sequentially, with the final folded end parallel to the mid-frequency operating plate. The high-frequency operating plate folds inwards on three sides except the bottom edge, with one side hinged to the folded end of the mid-frequency operating plate facing the high-frequency operating plate. A handle is provided on the mid-frequency operating plate, and a door lock is provided on the high-frequency operating plate. The design of the high-frequency and mid-frequency operating plates in the soundproof enclosure allows for better after-sales maintenance and repair, reducing manpower input and investment costs in both production and after-sales processes.

[0004] Traditional compressor housing door panels typically only offer basic protective functions and are not ideal for sound insulation and noise reduction. Their structural design and materials are insufficient to effectively block the propagation of sound waves generated during compressor operation, causing a significant amount of noise to diffuse outwards. Therefore, existing compressor housing door panels suffer from poor sound insulation. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a sound insulation and noise reduction door panel for a compressor housing, which includes an outer baffle, a metal frame and a sound insulation board. The sound insulation and noise reduction door panel for the compressor housing has the advantage of good sound insulation effect.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] A soundproof and noise-reducing door panel for a compressor housing includes an outer baffle, a metal frame, and a soundproof panel. The metal frame is fixedly connected to the outer baffle, and the soundproof panel is disposed on the outer baffle. The soundproof panel has a pressure plate and is located between the pressure plate and the outer baffle. The metal frame is fixedly installed with two plastic brackets, which are located at both ends of the pressure plate. The plastic brackets are fixedly connected with threaded sleeves, and the threaded sleeves are threadedly connected with connecting screws. The connecting screws are fixedly connected with pressure blocks, and the pressure blocks are engaged with the side of the pressure plate away from the soundproof panel.

[0008] Preferably, the plastic bracket includes a support section, two fixed sections and two connecting sections. The two ends of the support section are fixedly connected to the two connecting sections respectively, and the two connecting sections are fixedly connected to the two fixed sections respectively. The fixed sections are fixedly installed on the metal frame, and the threaded sleeve is fixedly connected to the support section.

[0009] Preferably, the end of the connecting section near the support section is inclined toward the threaded sleeve.

[0010] Preferably, the angle between the connecting section and the supporting section is 120°.

[0011] Preferably, the fixing section is provided with fixing screws that connect to the metal frame.

[0012] Preferably, the pressure block is fixedly connected to a positioning post, and the pressure plate is provided with a positioning hole for the positioning post to be engaged.

[0013] Preferably, the sound insulation panel includes a flexible rubber layer, an aluminum honeycomb panel, sound-absorbing cotton, and an aluminum foil layer, which are arranged sequentially along the direction close to the pressure plate.

[0014] Preferably, the flexible rubber layer has an edge barrier located between the aluminum honeycomb panel and the metal frame.

[0015] Preferably, the metal frame is fixedly connected with a sealing ring surrounding the sound insulation panel.

[0016] Preferably, the connecting screw is fixedly connected with an external hexagonal screw head.

[0017] Compared with the prior art, this utility model has achieved beneficial technical effects:

[0018] 1. This setup works as follows: the outer baffle acts as a protective shell for the door panel, shielding the sound insulation board and metal frame. The metal frame provides support to maintain the door panel's structural stability. The sound insulation board blocks noise, while the pressure plate tightly secures it to the outer baffle, preventing it from loosening. Tightening the connecting screws encourages them to move towards the sound insulation board, which in turn presses the pressure plate and sound insulation board together, ensuring the sound insulation board remains stable. By using the sound insulation board and outer baffle to block noise propagation, the outward diffusion of noise generated during compressor operation is significantly reduced, achieving excellent sound insulation.

[0019] 2. The compressor unit continuously vibrates during operation, which can easily cause vibration between the metal frame and the plastic support. Using a plastic support that contacts the metal frame effectively reduces noise generated during vibration and minimizes the sharp metallic friction noise caused by accidental loosening of the metal frame and plastic support.

[0020] 3. The door panel has a simple and reliable structure. While providing good protection, it can more effectively block the propagation of sound waves generated during the operation of the compressor and reduce the outward spread of noise. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a sound insulation and noise reduction door panel for a compressor housing according to an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the sound insulation panel in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the plastic bracket in an embodiment of this utility model;

[0024] Figure 4 This is a disassembly diagram of the flexible rubber layer, aluminum honeycomb panel, and sound-absorbing cotton in an embodiment of this utility model.

[0025] The technical features referred to by the various reference numerals in the accompanying drawings are as follows:

[0026] 11. Outer baffle; 12. Metal frame; 13. Sealing ring; 21. Sound insulation board; 22. Flexible rubber layer; 23. Aluminum honeycomb panel; 24. Sound-absorbing cotton; 25. Aluminum foil layer; 26. Edge enclosure; 27. Inclined groove; 31. Pressure plate; 32. Connecting screw; 33. Pressure block; 34. Positioning post; 35. Positioning hole; 36. External hexagonal screw head; 41. Plastic bracket; 42. Threaded sleeve; 43. Support section; 44. Fixing section; 45. Connecting section; 46. Fixing screw. Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. However, the scope of protection of this utility model is not limited to the specific embodiments described below.

[0028] refer to Figure 1-4 A soundproof and noise-reducing door panel for a compressor housing includes an outer baffle 11, a metal frame 12, and a soundproof panel 21. The metal frame 12 is fixedly connected to the outer baffle 11. The soundproof panel 21 is disposed on the outer baffle 11 and includes a flexible rubber layer 22, an aluminum honeycomb panel 23, sound-absorbing cotton 24, and an aluminum foil layer 25. The flexible rubber layer 22, aluminum honeycomb panel 23, sound-absorbing cotton 24, and aluminum foil layer 25 are arranged sequentially along the direction close to the pressure plate 31. The flexible rubber layer 22 is provided with an edge barrier 26, which is located between the aluminum honeycomb panel 23 and the metal frame 12. A sealing ring 13 is fixedly connected to the metal frame 12 and surrounds the soundproof panel 21.

[0029] The sound insulation panel 21 is equipped with a pressure plate 31, which contacts the aluminum foil layer 25. The sound insulation panel 21 is located between the pressure plate 31 and the outer baffle 11. Two plastic brackets 41 are fixedly installed on the metal frame 12, located at opposite ends of the pressure plate 31. Each plastic bracket 41 is fixedly connected to a threaded sleeve 42, which is threaded with a connecting screw 32. The connecting screw 32 is fixedly connected to a pressure block 33, which engages with the side of the pressure plate 31 away from the sound insulation panel 21. A fixing section 44 is fitted with a fixing screw 46 that connects to the metal frame 12, thus fixing the fixing section 44 onto the metal frame 12. A positioning post 34 is fixedly connected to the pressure block 33, and the pressure plate 31 has a positioning hole 35 for the positioning post 34 to engage. An external hexagonal screw head 36 is fixedly connected to the connecting screw 32.

[0030] The plastic bracket 41 includes a support section 43, two fixed sections 44, and two connecting sections 45. Both ends of the support section 43 are fixedly connected to the two connecting sections 45, and the two connecting sections 45 are fixedly connected to the two fixed sections 44. The fixed sections 44 are fixedly mounted on the metal frame 12. A threaded sleeve 42 is fixedly connected to the support section 43. The end of the connecting section 45 closest to the support section 43 is inclined towards the threaded sleeve 42. The angle between the connecting section 45 and the support section 43 is 120°. The sound-absorbing cotton 24 has an inclined groove 27 to accommodate the connecting section 45. The inclined groove 27 is inclined on the sound-absorbing cotton 24 to ensure that the sound-absorbing cotton 24 can cover the surface of the metal frame 12, thus ensuring sound insulation.

[0031] This embodiment has the following advantages:

[0032] The outer baffle 11 serves as the outer shell of the door panel, protecting the sound insulation panel 21 and the metal frame 12. The metal frame 12 provides support to maintain the structural stability of the door panel. The sound insulation panel 21 is used to block noise, and the pressure plate 31 tightly fixes the sound insulation panel 21 to the outer baffle 11 to prevent it from loosening. Tightening the connecting screws 32 causes them to tend to move towards the sound insulation panel 21, thereby pressing the pressure plate 31 and the sound insulation panel 21 together through the pressure block 33, keeping the sound insulation panel 21 stable. By blocking the propagation of noise through the sound insulation panel 21 and the outer baffle 11, the outward diffusion of noise generated during compressor operation can be significantly reduced, achieving the advantage of good sound insulation effect.

[0033] The compressor unit continuously vibrates during operation, which can easily cause vibration between the metal frame 12 and the plastic bracket 41. The plastic bracket 41, made of plastic, is in contact with the metal frame 12, which can effectively reduce the noise generated during vibration and reduce the sharp metallic friction sound caused by accidental loosening of the metal frame 12 and the plastic bracket 41.

[0034] The door panel has a simple and reliable structure. While providing good protection, it can more effectively block the propagation of sound waves generated during compressor operation and reduce the outward spread of noise.

[0035] The combined design of the support section 43, connecting section 45, and fixing section 44 enables the plastic bracket 41 to form a stable structure. The fixing section 44 and connecting section 45 can provide support force to the support section 43 from both ends, enabling the support section 43 to stably support the adjusting screw and pressure block 33.

[0036] When the vibration generated by the compressor is transmitted to the plastic bracket 41, the inclined connecting section 45 can play a buffering role through its own elastic deformation, reducing the impact force of the vibration on the plastic bracket 41 and the connecting screw 32, and improving the reliability of the connecting screw 32.

[0037] This angle ensures that the connecting section 45 has a certain degree of inclination to achieve the effect of buffering vibration, and also enables the supporting section 43 and the connecting section 45 to form a more reasonable mechanical structure, so that the overall stability and load-bearing capacity of the plastic bracket 41 can achieve a good balance.

[0038] The cooperation between the positioning post 34 and the positioning hole 35 can accurately position the pressure block 33 and the pressure plate 31, which can avoid the installation position deviation of the pressure plate 31 and prevent the pressure plate 31 from shifting during use, so that the pressure plate 31 can stably press the sound insulation board 21.

[0039] The flexible rubber layer 22 has good flexibility and elasticity, which can absorb and buffer some of the vibration energy, preventing the aluminum honeycomb panel 23 from colliding with the outer baffle 11 during vibration. The aluminum honeycomb panel 23 has a honeycomb structure, which can effectively reflect and scatter sound waves, extending the propagation path of sound waves in the sound insulation panel 21, thereby increasing the attenuation of sound waves during propagation in the sound insulation panel 21 and thus enhancing the sound insulation effect; in addition, the aluminum honeycomb panel 23 can also provide support for the outer baffle 11, further improving the structural stability of the outer baffle 11. The sound-absorbing cotton 24 has a large number of micropores, which can absorb sound waves and further reduce noise. The aluminum foil layer 25 has good reflective properties, which can reflect some sound waves back into the compressor unit, reducing the outward propagation of noise. In addition, the aluminum foil layer 25 is located on the inner side of the sound insulation panel 21 near the compressor unit, which can disperse the heat transferred from the compressor unit to the sound insulation panel 21 through the aluminum foil layer 25, preventing the heat from concentrating and causing the local temperature of the sound insulation panel 21 to become too high, and avoiding the sound insulation panel 21 from being burned by local overheating.

[0040] When the pressure plate 31 presses the sound insulation board 21, the flexible rubber pad, aluminum honeycomb board 23 and sound-absorbing cotton 24 squeeze each other, causing a portion of the flexible rubber pad and sound-absorbing cotton 24 to deform and embed into the honeycomb structure of the aluminum honeycomb board 23 during the compression. This enables the flexible rubber pad, aluminum honeycomb board 23 and sound-absorbing cotton 24 to remain stable, effectively improving the structural stability of the sound insulation board 21.

[0041] The edge enclosure 26 can fill the gap between the sound insulation panel 21 and the metal frame 12, preventing the aluminum honeycomb panel 23 from colliding with the metal frame 12 and generating noise during vibration.

[0042] The sealing ring 13 effectively prevents noise from leaking out from the gap between the metal frame 12 and the sound insulation panel 21, further improving the sound insulation effect of the door panel. At the same time, the sealing ring 13 also serves to prevent water and dust.

[0043] The external hex head 36 is easy to operate with a common hex wrench, making it more convenient and faster to install and remove the connecting screw 32.

[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. A soundproof and noise-reducing door panel for a compressor housing, comprising an outer baffle (11), a metal frame (12), and a soundproof panel (21), wherein the metal frame (12) is fixedly connected to the outer baffle (11), and the soundproof panel (21) is disposed on the outer baffle (11), characterized in that: The sound insulation panel (21) is provided with a pressure plate (31). The sound insulation panel (21) is located between the pressure plate (31) and the outer baffle (11). The metal frame (12) is fixedly installed with two plastic brackets (41). The two plastic brackets (41) are located at both ends of the pressure plate (31). The plastic brackets (41) are fixedly connected with threaded sleeves (42). The threaded sleeves (42) are threadedly connected with connecting screws (32). The connecting screws (32) are fixedly connected with pressure blocks (33). The pressure blocks (33) are engaged with the side of the pressure plate (31) away from the sound insulation panel (21).

2. The sound insulation and noise reduction door panel of the compressor housing according to claim 1, characterized in that: The plastic bracket (41) includes a support section (43), two fixed sections (44) and two connecting sections (45). The two ends of the support section (43) are fixedly connected to the two connecting sections (45) respectively, and the two connecting sections (45) are fixedly connected to the two fixed sections (44) respectively. The fixed sections (44) are fixedly installed on the metal frame (12), and the threaded sleeve (42) is fixedly connected to the support section (43).

3. The sound insulation and noise reduction door panel of the compressor housing according to claim 2, characterized in that: The end of the connecting section (45) near the support section (43) is inclined toward the threaded sleeve (42).

4. The sound insulation and noise reduction door panel of the compressor housing according to claim 3, characterized in that: The angle between the connecting section (45) and the supporting section (43) is 120°.

5. The sound insulation and noise reduction door panel of the compressor housing according to claim 2, characterized in that: The fixing section (44) is provided with fixing screws (46) that are connected to the metal frame (12).

6. The sound insulation and noise reduction door panel of the compressor housing according to claim 1, characterized in that: The pressure block (33) is fixedly connected to a positioning post (34), and the pressure plate (31) is provided with a positioning hole (35) for the positioning post (34) to be inserted.

7. The sound insulation and noise reduction door panel of the compressor housing according to claim 1, characterized in that: The sound insulation panel (21) includes a flexible rubber layer (22), an aluminum honeycomb panel (23), sound-absorbing cotton (24), and an aluminum foil layer (25), which are arranged sequentially along the direction close to the pressure plate (31).

8. The sound insulation and noise reduction door panel of the compressor housing according to claim 7, characterized in that: The flexible rubber layer (22) is provided with an edge barrier (26), which is located between the aluminum honeycomb panel (23) and the metal frame (12).

9. The sound insulation and noise reduction door panel of the compressor housing according to claim 1, characterized in that: The metal frame (12) is fixedly connected to a sealing ring (13) surrounding the sound insulation panel (21).

10. The sound insulation and noise reduction door panel of the compressor housing according to claim 1, characterized in that: The connecting screw (32) is fixedly connected to an external hexagonal screw head (36).

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