Investigation on Multi-Helmholtz Resonator in the Discharge System of Rotary Compressor
نویسندگان
چکیده
In the design of rotary compressor, Helmholtz resonator is always used in the discharge port of cylinder to reduce noise. The effect of Helmholtz resonator on the discharge port is restricted because of the narrow frequency band of Helmholtz resonator. In this paper, multi-Helmholtz resonator on the top-flange is used to reduce the discharge noise of different frequency bands, which does not change clearance volume. The experimental results show that multiHelmholtz resonator can effectively reduce the peak values of different frequency noise of inverter-driven compressor. The sound power level of compressor can be reduced by 0.9~2.7dB (A) under different operation conditions.
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