Air suction silencing cavity with buffer device

Abstract

The invention discloses an air suction silencing cavity with a buffering device, and belongs to the technical field of silencers. The air suction silencing cavity comprises a shell, an air inlet pipe and an air outlet pipe, wherein at least one partition plate is arranged in the shell to divide an inner cavity of the shell into a plurality of partitioned silencing chambers, and the silencing chambers sequentially communicate with each other; a buffering fan blade is arranged in one silencing chamber, the buffering fan blade is in rotating fit with the inner wall of the shell, and the buffering fan blade is located over an outlet of the air inlet pipe. The buffer fan blade rotate under the impact of gas to regulate and control the flow rate of the gas, the flow rate fluctuation of a refrigerant is reduced while the effect of buffering the gas flow is achieved, then the suction fluctuation is reduced, meanwhile, the gas is scattered in a first expansion cavity by means of the rotation of the buffer fan blades, irregular transmission, diffusion and reflection occur so that transmission loss and collision loss of sound waves are generated, noise is weakened, and the noise reduction effect is improved.

Description

technical field [0001] The invention relates to the technical field of mufflers, in particular to a suction muffler chamber with a buffer device. Background technique [0002] With the improvement of people's material living standards and the pursuit of quality of life, the noise quality requirements of household refrigerators are getting higher and higher. As the core of the refrigerator refrigeration system, the compressor converts electrical energy into internal energy of the refrigerant through a mechanical transmission structure. The cooling capacity and noise level of the compressor directly affect the cooling capacity and noise level of the refrigeration system. The suction muffler chamber is one of the key components for reducing airflow noise inside the compressor. At present, the mainstream suction muffler chamber can reduce the airflow noise through the isolation partition of the internal space and the connection design of the connecting pipe; the muffler structu...

AI Technical Summary

Problems solved by technology

However, in the compressor noise test experiment, it was found that because the reciprocating rotation of the compressor is periodically discontinuous, there are obvious suction fluctuations in the suction muffler chamber during suction. A more obvious noise is produced; therefore, the refrigerant flows directly into the left muffler chamber through the suction pipe, which will generate a large suction pulsation noise; secondly, the above structure can only reduce the noise within a limited frequency range, while the compression The noise of the machine has a wide spectrum characteristic, which makes the noise reduction capability limited, and the frequency band needs to be improved

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