Exhaust silencing structure and compressor

Abstract

The invention provides an exhaust silencing structure and a compressor. The exhaust silencing structure comprises an air cylinder seat and a first silencing pipe, the air cylinder seat is provided with an exhaust channel and a first silencing cavity, the first silencing pipe is arranged in the first silencing cavity, a first inlet, a first outlet and a plurality of first silencing holes are formedin the side wall of the first silencing pipe, a first cavity is formed in the space between the first silencing pipe and the inner wall of the first silencing cavity, each first silencing hole is communicated with the first cavity, and the exhaust channel is communicated with the first inlet. Through the exhaust silencing structure, refrigerant airflow enters the cavity of the first silencing pipe through the exhaust channel, part of sound wave of exhaust pulsation noise in the first silencing pipe penetrates through the first silencing holes and then enters the first cavity after penetratingthrough the first silencing holes, and after the sound wave enters the first cavity, part of the sound wave and airflow in the first cavity can generate air column resonance, part of sound energy isconverted into heat energy to be consumed, another part of sound wave is reflected back into the cavity to be counteracted with incident sound wave, and the effects of noise reduction and sound attenuation are achieved.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to an exhaust noise reduction structure and a compressor. Background technique [0002] With the improvement of the quality of life, the demand for quiet products in the terminal refrigerator market is becoming stronger and stronger, and the compressor, as the core part of the refrigerator, is one of the main noise sources that cause refrigerator noise. Therefore, for piston compressors, shock absorption and noise reduction appears to be very important. [0003] The noise source of piston compressors is mainly low-frequency suction noise, so the main noise improvement related patents of compressor manufacturers are mainly on the improvement of suction noise, and there are few related technical solutions for exhaust noise. [0004] With the popularization and application of the frequency conversion technology of piston compressors, we found that the medium and high frequency noi...

AI Technical Summary

Problems solved by technology

[0005] In the existing compressor technology, the refrigerant gas enters the cylinder through the suction muffler, then enters the exhaust flow channel through the compression of the piston, and then enters the exhaust muffler from the exhaust flow channel, while the existing exhaust gas Most mufflers have a simple structure, and the effect on reducing exhaust pulsation noise is not very obvious

The exhaust pulsation of the compressor is transmitted to the outside of the compressor shell through the exhaust pipe, which in turn causes the refrigerator to vibrate and make a lot of noise, which affects the noise reduction effect

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