Dry ice particle spraying device

Abstract

The invention provides a dry ice particle spraying device enables effectively forming of dry ice particles softer than granular dry ice and harder than snow-shaped dry ice with liquid carbon dioxide, and is capable of easily spraying out the dry ice particles. The dry ice particle spraying device comprises a liquid carbon dioxide supply source, a gas-liquid carbon dioxide supply flow path, a pressure reduction portion, a dry ice particle generation portion, and a dry ice particle introduction path, wherein the dry ice particle generation portion has a dry ice particle generation component seamlessly installed in the gas-liquid carbon dioxide supply flow path into which liquid carbon dioxide having a reduced pressure between three phase point and critical point from the pressure reduction portion flows. The dry ice particle generation component has at least one through hole, of which the shape is adjusted such that the pressure is above three phase point before the dry ice particle generation component and under three phase point after the dry ice particle generation component.

Description

technical field [0001] The present invention relates to a dry ice particle blasting device used for cleaning, deflashing, and surface processing of electric and electronic equipment, optical components and their processed components, inspection components, resin molded products or their raw materials, and the like. Background technique [0002] In the past, this kind of dry ice particle blasting device has been proposed in the following two types: the granular dry ice is mixed into the compressed air and guided to the spraying nozzle, and sprayed from the spraying nozzle; or the dry ice is formed from liquid carbon dioxide, and then sprayed from the spraying nozzle . The former always requires the operation of putting in granular dry ice, which is cumbersome, and because the sprayed granular dry ice has the disadvantage of easily damaging the processed articles. [0003] In addition, the latter method of forming dry ice from liquid carbon dioxide can only produce so-called ...

AI Technical Summary

Problems solved by technology

The former always requires the operation of putting in granular dry ice, which is cumbersome, and because the sprayed granular dry ice has the disadvantage of easily damaging the processed items

[0003] In addition, the latter method of forming dry ice from liquid carbon dioxide can only produce so-called snow-like dry ice. Since snow-like dry ice is relatively soft, there is a disadvantage that sufficient cleaning effects cannot be obtained.

Images