Steam-doped super-cavitation spray noise suppression device for thermostatic expansion valve

Abstract

The invention relates to a steam-doped super-cavitation spray noise suppression device for a thermostatic expansion valve. A bypass capillary tube is connected between a transition tube between an outlet of a thermostatic expansion valve and an inlet of an evaporator and the front middle part of the evaporator; a gaseous refrigerant with the pressure slightly higher than the injection pressure of the outlet of the thermostatic expansion valve in the front middle part of the evaporator flows back to the outlet of a throttling device along the bypass capillary tube to carry out local steam mixing to form a supercavitation phenomenon, so that extra noise generated by the outlet of the throttling device due to low local pressure is reduced; and the refrigerants in the bypass capillary tubes converge and then flow back into the evaporator, and refrigerant circulation is completed.

Description

technical field [0001] The present invention designs a novel thermal expansion valve steam-mixed cavitation injection noise suppressing device. Specifically, a connecting pipe at the outlet of the thermal expansion valve and a bypass capillary are introduced into the refrigerant gas in the front and middle of the evaporator, and the bypass pipe The refrigerant gas in the refrigerant gas is mixed and then flows back into the evaporator; because the outlet of the thermal expansion valve will generate a lot of jet noise, the outlet of the thermal expansion valve is mixed with steam to achieve the effect of steam-mixed supercavitation, which can improve the steam-mixed area. Pressure, effectively reduce the cavitation coefficient, significantly reduce the pressure when the cavitation collapses, and greatly reduce the cavitation noise and bubble burst noise. Background technique [0002] The noise research of the refrigeration system shows that, in addition to the mechanical nois...

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Problems solved by technology

[0006] The technical problem to be solved in the present invention is: to solve the technical problems of the existing refrigeration system, such as excessive throttling jet noise and large overall sound power, to design a cooling system that does not affect its cooling effect, and is simple and easy to effectively reduce thermal expansion. Silencer device for valve injection noise, thereby improving the sound quality of the entire refrigeration system and reducing noise pollution

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