Design method of compressor noise reduction structure

Abstract

The invention discloses a method for designing a compressor noise reduction structure. The method comprises the following steps: constructing a silencer three-dimensional model with a full-enclosed cavity structure; solving acoustic parameters of a dipole acoustic mode of the full-enclosed cavity structure of the silencer three-dimensional model; obtaining a parameter of a position where a resonant cavity of a tail pipe is formed according to the solved acoustic parameters of the dipole acoustic mode; obtaining a structural parameter relation of the resonant cavity of the tail pipe according to the target noise elimination frequency of a silencer, and ensuring that the intrinsic frequency of the resonant cavity of the tail pipe is the same as the target noise elimination frequency of the silencer, an amplitude value of the resonant cavity is the same as that of the silencer, and a phase position of the resonant cavity is opposite to that of the silencer. The method for designing the compressor noise reduction structure is simple, feasible and low in cost. According to the compressor noise reduction structure designed by the method, the vortex noise as well as impact and tapping noise at exhaust ports of the silencer can be greatly reduced, and the noise elimination and noise reduction effect is greatly improved compared with that of a conventional silencer.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a design method for a sound-absorbing structure of a compressor. Background technique [0002] Noise is the main indicator of the quality control of air conditioners, and the noise of air conditioners is mostly from the noise of compressors. Therefore, effectively controlling the noise of the compressor is a powerful guarantee for the quality of the air conditioner. The exhaust noise of the compressor accounts for the largest proportion in the overall noise of the compressor. Therefore, the exhaust method of the compressor has a great impact on the overall noise of the compressor. [0003] Traditional compressors use phase interference type mufflers to suppress dipole modal noise. By setting the two exhaust ports of the muffler in the amplitude of the dipole mode, under the premise that the sound pressure amplitude and phase of the two exhaust ports are the same, the dipole...

AI Technical Summary

Problems solved by technology

[0004] The design of the above-mentioned traditional compressor muffler has great limitations in practical application. On the one hand, it is difficult to ensure that the sound pressure amplitude and phase of the two exhaust ports of the muffler are the same during actual processing; High-pressure gas is easy to form vortex on the throttle surface of the exhaust port, generating vortex noise, and radiating out through the exhaust port

In addition, the traditional muffler exhausts through the upper surface, so that the high-pressure, high-speed airflow easily impacts the motor, resulting in strong impact and flapping noise

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