Noise reduction structure of supercharger

Abstract

A noise reduction structure of a supercharger, comprising: a relief channel of the supercharger having a high pressure pipeline and a low pressure pipeline; a silencing assembly which is arranged at a gas communication position between the high pressure pipeline and the low pressure pipeline. The silencing assembly has a plurality of vent holes with a hole diameter smaller than 20 mm, and the silencing assembly is configured in such a way that the high pressure gas only enters the low pressure pipeline after passing through the vent holes when the high pressure pipeline is in communication with the low pressure pipeline. The noise reduction structure of the supercharger mentioned above has good effect of noise elimination during gas release and low costs.

1 . A noise reduction structure of a supercharger, comprising:
 a relief channel of the supercharger, wherein the relief channel is provided with a high pressure pipeline and a low pressure pipeline; and   a silencing assembly arranged at a gas circulation position between the high pressure pipeline and the low pressure pipeline, provided with a plurality of vent holes having a diameter of less than 20 mm, and configured in such a way that high pressure gas only enters the low pressure pipeline after passing through the plurality of vent holes when the high pressure pipeline is communicated with the low pressure pipeline.   
     
     
         2 . The noise reduction structure of  claim 1 , wherein:
 a gas outlet end of the high pressure pipeline is inserted into the low pressure pipeline; and   the silencing assembly is sleeved at the gas outlet end of the high pressure pipeline, and is connected with the high pressure pipeline in a sealed manner.   
     
     
         3 . The noise reduction structure of  claim 2 , wherein the silencing assembly is of a tubular structure, and the plurality of vent holes are formed in a tubular wall of the silencing assembly. 
     
     
         4 . The noise reduction structure of  claim 3 , wherein the diameter of the vent holes ranges from 1 mm to 2 mm. 
     
     
         5 . The noise reduction structure of  claim 4 , wherein the plurality of vent holes are uniformly distributed along the tubular wall of the silencing assembly, and a distance between every two vent holes is 6 to 7 times the diameter of the vent holes. 
     
     
         6 . The noise reduction structure of  claim 3 , further comprising:
 a relief valve arranged at a connector between the high pressure pipeline and the low pressure pipeline, which are isolated or communicated by controlling opening and closing of the relief valve.   
     
     
         7 . The noise reduction structure of  claim 6 , wherein:
 a valve seat of the relief valve is integrated on the supercharger, an inner cavity of the valve seat forms a part of the low pressure pipeline, and the gas outlet end of the high pressure pipeline is arranged in the inner cavity of the valve seat; and   a gate of the relief valve presses against the gas outlet end of the high pressure pipeline, and the gate is configured to close the gas outlet end of the high pressure pipeline when the relief valve is closed; and when the relief valve is opened, a gas outlet channel is formed between the gate and the gas outlet end of the high pressure pipeline.   
     
     
         8 . The noise reduction structure of  claim 6 , wherein the silencing assembly is arranged in an inner cavity of the valve seat and sleeved outside the gas outlet end of the high pressure pipeline, one end of the silencing assembly is connected with an inner wall of the inner cavity of the valve seat in a sealed manner, and the other end of the silencing assembly is connected with an outer wall of the high pressure pipeline in a sealed manner. 
     
     
         9 . The noise reduction structure of  claim 1 , wherein the silencing assembly is a silencing plate with vent holes, the silencing plate is arranged at the gas outlet end of the high pressure pipeline, and a circumference of the silencing plate is connected to an inner wall of the high pressure pipeline in a sealed manner.