Exhaust filter for compressor and silencing method of exhaust filter

Abstract

The invention discloses an exhaust filter for a compressor and a silencing method of the exhaust filter. The exhaust filter for the compressor comprises a shell. A partition plate used for dividing the shell into a first silencing chamber and a second silencing chamber is arranged in the shell. An inlet pipe through which the first silencing chamber communicates with a coil pipe of the compressoris arranged at one end of the shell. An outlet pipe through which the second silencing chamber communicates with the coil pipe of the compressor is arranged at the other end of the shell. A communicator hollow pipe is arranged on the partition plate. One end of the communicator hollow pipe stretches into the first silencing chamber, and the other end of the communicator hollow pipe stretches intothe second silencing chamber. Silencing holes are formed in the end, located in the second silencing chamber, of the communicator hollow pipe, the end portion of the end is closed, and the area of each silencing hole is smaller than the sectional area of the sealed end of the communicator hollow pipe. According to the exhaust filter for the compressor and the silencing method of the exhaust filter, wideband noise and jet noise of the compressor can be effectively lowered, and exhaust silencing of the compressor is achieved.

Description

technical field [0001] The invention belongs to the technical field of compressor noise reduction, and in particular relates to a compressor exhaust filter and a noise reduction method thereof. Background technique [0002] Exhaust filters for compressors in the prior art, such as utility model patent No. 201620041828.6, disclosed the technology of "exhaust filters for compressors" on August 17, 2016. The filter consists of a shell, a cover, an inlet pipe and an outlet pipe extending into the interior, and an intermediate pipe for the two chambers. Although the filter can eliminate a certain amount of noise, it lacks the understanding of the characteristics of the exhaust noise. At the same time, due to the unique amplitude-frequency characteristics of the exhaust noise, when the gas passes through the exhaust valve of the compressor, the movement process of the gas is similar to the small hole jet flow of the gas, and the process of the air flow out of the cylinder belongs ...

AI Technical Summary

Problems solved by technology

[0002] Exhaust filters for compressors in the prior art, such as utility model patent No. 201620041828.6, disclosed the technology of "exhaust filters for compressors" on August 17, 2016. The filter consists of a shell, a cover, an inlet pipe and an outlet pipe extending into the interior, and an intermediate pipe for the two chambers. Although the filter can eliminate certain noise, it lacks the understanding of the characteristics of the exhaust noise.

At the same time, due to the unique amplitude-frequency characteristics of the exhaust noise, when the gas passes through the exhaust valve of the compressor, the movement process of the gas is similar to the small hole jet flow of the gas, and the process of the air flow out of the cylinder belongs to the injection process. Due to the existence of the injection phenomenon, the exhaust Gas process is easy to cause jet noise

At the same time, the exhaust noise of the compressor is wide-band noise, and the noise value becomes larger when the pressure of the inlet exhaust hole is higher, so the existing compressor exhaust filter has limited noise reduction ability

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