A noise reduction structure of a screw compression main machine
Patent Information
- Application Number
- CN202522261510.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0004]本实用新型的目的在于提供一种螺杆压缩主机的降噪结构，解决了常规的螺杆压缩机的降噪方法仅能对已经传播到机体外部的噪声进行有限的阻隔与吸收，并未从噪声产生的源头，即主机的排气过程，进行有效的抑制的问题
[0007]本实用新型的一种螺杆压缩主机的降噪结构，通过所述排气体、所述下降噪盖板、所述侧降噪盖板、所述下消声支架和所述侧消声支架共同组成降噪腔，当所述主机体产生的压缩空气和其携带的高频气流噪声从所述排气体流出后，会进入这个降噪腔中，压缩空气会通过所述排气体内的排气流道，并由所述排气体上的所述排气口排出，而气流噪声通过所述侧消声支架和所述下消声支架上的小孔时，会进入所述侧消声支架和所述下消声支架内部填充的玻璃纤维内。气流噪声在细小的玻璃纤维中进行多次反射和摩擦，其能量被消耗，最终转化为微小的热能，从而实现降噪。
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Figure CN224800498U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screw compressor technology, and in particular to a noise reduction structure for a screw compressor main unit. Background Technology
[0002] Screw compressors, as positive displacement machines that use high-speed rotation of male and female rotors to compress gas, are widely used in industrial production due to their compact structure, stable operation, and high efficiency. However, during operation, the compressed air generates intense high-speed pulsations and turbulence inside the compressor and in the exhaust passage, resulting in significant airflow noise, which has become one of the main sources of noise pollution in the industrial environment.
[0003] Currently, the common noise reduction method used in the industry to address this issue is to attach sound-absorbing cotton to the overall frame and the inside of the outer door panels of the air compressor. This method is essentially a passive isolation, which can only provide limited blocking and absorption of noise that has already propagated to the outside of the machine. It does not effectively suppress the noise at its source, namely the exhaust process of the main unit. Therefore, this technical solution has a fundamental flaw: once the air compressor door is opened for maintenance or heat dissipation, its noise reduction effect drops sharply, and the noise level remains high. Utility Model Content
[0004] The purpose of this invention is to provide a noise reduction structure for a screw compressor main unit, which solves the problem that conventional noise reduction methods for screw compressors can only block and absorb noise that has already spread to the outside of the machine, and do not effectively suppress the noise from the source of the noise, namely the exhaust process of the main unit.
[0005] To achieve the above objectives, this utility model provides a noise reduction structure for a screw compressor main unit, including a main unit body and an exhaust gas. The exhaust gas is fixedly installed on the main unit body and has an exhaust port. It also includes a noise reduction device, which includes a lower muffler bracket, a side muffler bracket, and a mounting assembly. The lower muffler bracket is installed in the exhaust gas body through the mounting assembly, and the side muffler bracket is installed in the exhaust gas body through the mounting assembly. The side muffler bracket is located on the side of the exhaust gas closest to the lower muffler bracket.
[0006] The installation assembly includes a noise reduction cover plate and a side noise reduction cover plate. The noise reduction cover plate is fixedly installed on the exhaust gas, and the lower silencer bracket is fixedly connected to the noise reduction cover plate. The side noise reduction cover plate is fixedly installed on the exhaust gas, and the side silencer bracket is fixedly connected to the side noise reduction cover plate. The exhaust gas, the noise reduction cover plate, the side noise reduction cover plate, the lower silencer bracket, and the side silencer bracket together form a noise reduction cavity.
[0007] This utility model discloses a noise reduction structure for a screw compressor main unit. The noise reduction chamber is formed by the exhaust gas, the noise reduction cover plate, the side noise reduction cover plate, the lower silencer bracket, and the side silencer bracket. When the compressed air generated by the main unit and the high-frequency airflow noise it carries flow out from the exhaust gas, they enter this noise reduction chamber. The compressed air passes through the exhaust channel in the exhaust gas body and is discharged through the exhaust port on the exhaust gas. The airflow noise, when passing through small holes on the side silencer bracket and the lower silencer bracket, enters the glass fiber filling inside the side silencer bracket and the lower silencer bracket. The airflow noise undergoes multiple reflections and friction within the fine glass fibers, its energy is consumed, and it is ultimately converted into a small amount of heat energy, thereby achieving noise reduction. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0009] Figure 1 This is a schematic diagram of the overall structure of a noise reduction structure for a screw compressor main unit according to this utility model.
[0010] Figure 2 This is a schematic diagram showing the connection between the exhaust gas outlet and the exhaust port of this utility model.
[0011] Figure 3 This is a schematic diagram of the lower noise reduction bracket of this utility model.
[0012] Figure 4 This is a schematic diagram of the side noise reduction bracket of this utility model.
[0013] In the diagram: 101-Main body, 102-Exhaust gas, 103-Noise reduction cover, 104-Side noise reduction cover, 105-Lower muffler bracket, 106-Side muffler bracket, 107-Exhaust port. Detailed Implementation
[0014] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0015] The embodiment of this application is as follows:
[0016] Please see Figure 1-4 , Figure 1 This is a schematic diagram of the overall structure of a noise reduction structure for a screw compressor main unit according to this utility model. Figure 2 This is a schematic diagram showing the connection between the exhaust gas outlet and the exhaust port of this utility model. Figure 3 This is a structural schematic diagram of the lower noise-reducing bracket of this utility model. Figure 4 This is a schematic diagram of the side noise reduction bracket of this utility model.
[0017] This utility model provides a noise reduction structure for a screw compressor main unit: it includes a main unit body 101 and an exhaust gas 102, and also includes a noise reduction device. The noise reduction device includes a lower silencer bracket 105, a side silencer bracket 106, and a mounting assembly. The mounting assembly includes a noise reduction cover plate 103 and a side noise reduction cover plate 104. The aforementioned solution solves the problem that conventional screw compressor noise reduction methods can only provide limited blocking and absorption of noise that has already propagated to the outside of the machine body, and cannot effectively suppress the noise at its source, namely the exhaust process of the main unit.
[0018] In this embodiment, after the airflow noise enters the exhaust gas 102, it is consumed by the lower silencer bracket 105 and the side silencer bracket 106, so that the noise is suppressed in the exhaust gas 102, thus solving the noise reduction problem from the source.
[0019] The lower silencer bracket 105 is installed within the exhaust gas 102 via the mounting assembly, and the side silencer bracket 106 is also installed within the exhaust gas 102 via the mounting assembly. The side silencer bracket 106 is located on the side of the exhaust gas 102 closest to the lower silencer bracket 105. Both the lower silencer bracket 105 and the side silencer bracket 106 are porous structures, and both are filled with glass fiber, a common sound-absorbing material. The side muffler bracket 106 is made of stainless steel. The mounting assembly facilitates the fixing of the lower muffler bracket 105 and the side muffler bracket 106 inside the exhaust gas 102. The compressed air and airflow noise generated by the main body 101 flows out of the exhaust gas 102 and enters the noise reduction chamber inside the exhaust gas 102. The compressed gas is discharged from the exhaust port 107. The airflow noise is consumed by the glass fiber filled in the lower muffler bracket 105 and the side muffler bracket 106, thereby achieving noise reduction in the exhaust gas 102.
[0020] Secondly, the noise reduction cover 103 is fixedly installed on the exhaust gas 102, and the lower silencer bracket 105 is fixedly connected to the noise reduction cover 103; the side noise reduction cover 104 is fixedly installed on the exhaust gas 102, and the side silencer bracket 106 is fixedly connected to the side noise reduction cover 104. The exhaust gas 102, the noise reduction cover 103, the side noise reduction cover 104, the lower silencer bracket 105, and the side silencer bracket 106 together form a noise reduction cavity. The noise reduction cover 103 is fixed to the exhaust gas 102 by bolts. On 102, the lower silencer bracket 105 is also fixed to the noise reduction cover plate 103 by bolts, the side noise reduction cover plate 104 is fixed to the exhaust gas 102 by bolts, and the side silencer bracket 106 is fixed to the side noise reduction cover plate 104 by bolts. Both the noise reduction cover plate 103 and the side noise reduction cover plate 104 are made of steel plates and have sufficient strength. The arrangement of the noise reduction cover plate 103 and the side noise reduction cover plate 104 facilitates the installation and fixing of the lower silencer bracket 105 and the side noise reduction bracket 106.
[0021] In this embodiment, the exhaust gas 102, the noise reduction cover 103, the side noise reduction cover 104, the lower silencer bracket 105, and the side silencer bracket 106 together form a noise reduction cavity. When the compressed air generated by the main body 101 and the high-frequency airflow noise it carries flow out from the exhaust gas 102, they enter this noise reduction cavity. The compressed air passes through the exhaust channel in the exhaust gas 102 and is discharged through the exhaust port 107 on the exhaust gas 102. The airflow noise, when passing through the small holes on the side silencer bracket 106 and the lower silencer bracket 105, enters the glass fiber filled inside the side silencer bracket 106 and the lower silencer bracket 105. The airflow noise undergoes multiple reflections and frictions in the fine glass fibers, and its energy is consumed, ultimately converted into a small amount of heat energy, thereby achieving noise reduction.
[0022] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A noise reduction structure for a screw compressor main unit, comprising a main unit body and an exhaust gas, wherein the exhaust gas is fixedly mounted on the main unit body and has an exhaust port, characterized in that, It also includes noise reduction devices; The noise reduction device includes a lower muffler bracket, a side muffler bracket, and a mounting assembly. The lower muffler bracket is mounted on the exhaust body via the mounting assembly, and the side muffler bracket is mounted on the exhaust body via the mounting assembly. The side muffler bracket is located on the side of the exhaust gas closest to the lower muffler bracket.
2. The noise reduction structure of the screw compressor main unit as described in claim 1, characterized in that, The mounting assembly includes a noise reduction cover plate and a side noise reduction cover plate. The noise reduction cover plate is fixedly installed on the exhaust gas. The side noise reduction cover plate is fixedly installed on the exhaust gas. The exhaust gas, the noise reduction cover plate, the side noise reduction cover plate, the lower silencer bracket, and the side silencer bracket together form a noise reduction cavity.
3. The noise reduction structure of the screw compressor main unit as described in claim 2, characterized in that, The lower noise-absorbing bracket is fixedly connected to the noise-reducing cover plate; the side noise-absorbing bracket is fixedly connected to the side noise-reducing cover plate.