Capillary steam-doped super-cavitation jet noise suppression device

A noise suppression and capillary technology, applied in the field of jet noise reduction suppression devices, can solve the problems of excessive flow noise fluctuation and large overall sound power, and achieve the effects of reducing the number of cavitations, increasing local pressure, and low maintenance costs

Inactive Publication Date: 2020-09-25
CENT SOUTH UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to design a simple and effective cooling system that does not affect its cooling effect and aims at the technical problems of excessive fluctuation of flow noise and large overall sound power in the circulation device of the existing small-scale refrigeration system. A muffler that reduces jet noise at the outlet of the throttling device, thereby improving the sound quality of the entire refrigeration system and reducing noise pollution

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  • Capillary steam-doped super-cavitation jet noise suppression device
  • Capillary steam-doped super-cavitation jet noise suppression device

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the drawings and implementation.

[0020] See figure 1 , The capillary steam doping supercavitation jet noise suppression device includes a throttle capillary 1, an evaporator inlet transition pipe 2, a bypass capillary a, the outer diameter of the bypass capillary a is 1.8-2.5mm, and the inner diameter is 0.6-0.7mm , The total length of the bypass capillary a is 200mm, the length of the bypass capillary a inserted into the front end of the evaporator inlet transition tube 2 is 10mm, and the distance between the inserted front end and the outlet of the throttle capillary 1 is 10mm; the bypass capillary a is inserted into the evaporator inlet transition tube 2 The length of the rear end is 10mm, and the distance between the insertion rear end and the outlet of the throttle capillary 1 is 170mm, and the connection method of each part is oxygen welding.

[0021] See figure 2 , The capillary steam doping...

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Abstract

The invention relates to a capillary steam-doped super-cavitation jet noise suppression device. According to the device, refrigerant gas in the middle of an evaporator is introduced into an outlet ofa capillary tube through a bypass capillary tube, so that steam doping is performed on a refrigerant which comes out of the capillary tube and enters the evaporator, the local pressure of a steam doping area is increased, the cavitation number is effectively reduced, the pressure during cavitation collapse is remarkably reduced, the super-cavitation phenomenon is formed, and cavitation erosion andcavitation noise is greatly reduced; and the mixed refrigerant flows into the evaporator to complete circulation. Compared with a traditional silencer, the noise suppression device has the advantagesof being simple in structure, convenient to machine and install, low in later maintenance cost and the like; and the noise suppression device is very wide in application, not only is suitable for common refrigeration devices such as refrigerators and air conditioners, but also can be adopted for refrigeration systems in the fields of machinery, metallurgy, petroleum, chemical industry, food preservation, artificial environment, biological pharmacy and the like.

Description

Technical field [0001] The present invention relates to a new type of injection noise reduction and suppression device, specifically, a refrigerant gas in the middle of an evaporator is introduced into the outlet of the capillary through a bypass capillary tube, thereby mixing the refrigerant out of the capillary tube into the evaporator , Increase the local pressure of the steam mixing zone, effectively reduce the number of cavitation, significantly reduce the pressure when the cavitation collapses, form a supercavitation phenomenon, and greatly reduce the cavitation noise. The mixed refrigerant flows into the evaporator to complete the cycle. Background technique [0002] The noise research of the refrigeration system shows that, in addition to the mechanical noise and electromagnetic noise of the compressor itself, the flow noise of the system itself directly affects the noise level of the refrigeration system and the sound quality parameters of the refrigeration system, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06
CPCF25B2500/12
Inventor 张玙汪谦旭刘益才
Owner CENT SOUTH UNIV
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