Low noise control method

A control method and low-noise technology, applied to parts of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve the problem of being unable to reduce low- and medium-frequency noise and high-frequency noise at the same time, Achieve the effect of improving passive acoustic characteristics, simple structure and easy implementation

Inactive Publication Date: 2018-04-24
潜江传家电子商务有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a supercharger system and a low-noise control method, improve the structure of the supercharger, cut off the noise from the sound w

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Embodiment 1

[0020] Such as figure 1 As shown, a supercharger system provided in this embodiment includes a compressor housing 2 and a rotor, the rotor is fixed in the compressor housing 2 through a rotating shaft 16, and the space between the compressor housing 2 and the rotor blades 5 of the rotor is There is an annular gap, the compressor housing 2 is provided with a compressor inner wall 14, the compressor inner wall 14 encloses an intake cavity 13, and the intake cavity 13 communicates with the annular gap; the compressor housing 2 and the compressor inner wall 14 Form the airflow channel 15 that is arranged along the direction of the airflow in the intake cavity 13 between them, the inlet of the airflow channel 15 communicates with the annular gap, and the outlet of the airflow channel 15 communicates with the air inlet of the intake cavity 13; on the compressor inner wall 14 There is an actuator for allowing or preventing the airflow from flowing through the outlet of the airflow ch...

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Abstract

The invention relates to a low noise control method. The method is characterized in that an annular gap is formed between an air compressor shell and a rotor blade of a rotor of a supercharger system,the air compressor shell is internally provided with an air compressor inner wall, an air feeding cavity is defined by the air compressor inner wall, and the air feeding cavity communicates with theannular gap; an airflow channel which is arranged in the direction of airflow in the air feeding cavity is formed between the air compressor shell and air compressor inner wall; and the air compressorinner wall is provided with an executing mechanism which is used for allowing the airflow to flow through an outlet of the airflow channel or preventing the airflow from flowing through the outlet ofthe airflow channel. The low noise control method comprises the steps of jointly changing low-frequency and medium-frequency noise through a silencing ring and a flow expanding groove, and reducing high-frequency noise through the executing mechanism. The invention provides the supercharger system and the low noise control method. According to the system and the method, the structure of a supercharger is improved, the noise is cut off on a sound wave transmission path, the system is applicable to all radial flow type superchargers, and the problem that the low-frequency and medium-frequency noise and the high-frequency noise can not be reduced simultaneously in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a low noise control method. Background technique [0002] With the increasingly stringent requirements for carbon emission restrictions, supercharging technology has become an inevitable choice for the development of engine technology. As the pressure ratio of the supercharger has gradually increased in recent years, people's requirements for the comfort of the engine have also begun to increase, resulting in the noise problem of the supercharger becoming an issue that manufacturers and users are paying more and more attention to. [0003] At present, the most common means to directly solve the noise problem of a flow-type exhaust gas turbocharger is to use a muffler ring and / or a flow widening groove. Among them, the muffler ring acts as a flow guide, which can make the air flow field more smooth and stable, thereby reducing some aerodynamic noise; the flow widening groove can ...

Claims

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Application Information

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IPC IPC(8): F04D29/66F02B37/12
CPCF02B37/12F04D29/661F04D29/663Y02T10/12
Inventor 不公告发明人
Owner 潜江传家电子商务有限公司
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