Control device for generating porous carbon dioxide snowflake jets

Abstract

This invention relates to a control device for generating a porous carbon dioxide snowflake jet, mainly comprising a liquid carbon dioxide supply unit, a clean dry gas supply unit, a dual-fluid integrated control unit, and a nozzle unit. Liquid carbon dioxide is distributed to multiple capillaries via a distributor block, and then introduced together with the clean dry gas into a bundle tube and a single outer sleeve, before being delivered to the porous nozzle. Upon depressurization at the nozzle outlet, the liquid carbon dioxide forms snowflake-shaped dry ice particles, which are accelerated by the clean dry gas to form a high-kinetic-energy porous linear jet. Compared to the existing independent pipeline structure of porous nozzles, this invention integrates multiple capillaries into a single outer sleeve, offering advantages such as small size, light weight, flexible operation, and the ability to reduce nozzle spacing. It also generates a uniform linear carbon dioxide snowflake jet, improving cleaning efficiency and expanding its applicability.

Claims

1. A control device for generating porous carbon dioxide snowflake jets, comprising: A liquid carbon dioxide (CO2) supply unit, a clean and dry gas supply unit, a dual-fluid integrated control unit, and a nozzle unit are provided. The liquid carbon dioxide (CO2) supply unit is equipped with a plurality of capillary tubes. The clean and dry gas supply unit is equipped with a clean and dry gas inlet pipe. Its main features are as follows: The dual-fluid integrated control unit is equipped with a bundle tube, which is a hollow, sealed conical tube. The wide inlet of the bundle tube is equipped with a plurality of capillary tubes, and the tube-side inlet of the bundle tube is equipped with the clean and dry gas inlet pipe for inputting heated clean and dry gas. The narrow outlet of the bundle tube is equipped with an outer sleeve, and the inner part of the outer sleeve contains a plurality of capillary tubes. The nozzle unit is equipped with a multi-hole nozzle, which integrates the plurality of capillary tubes within the outer sleeve, supplying liquid carbon dioxide (CO2) and clean and dry gas to the multi-hole nozzle for use.

2. The control device for generating porous carbon dioxide snowflake jets as described in claim 1, wherein: The liquid carbon dioxide (CO2) supply unit is equipped with a switching valve, a flow divider, and multiple flow adjustment valves. The switching valve controls the supply of liquid carbon dioxide (CO2) from the liquid carbon dioxide (CO2) supply unit. The flow divider has a liquid carbon dioxide (CO2) input pipe at its inlet and multiple liquid carbon dioxide (CO2) output pipes at its outlet. Multiple flow adjustment valves are provided on the multiple liquid carbon dioxide (CO2) output pipes to adjust the flow rate of liquid carbon dioxide (CO2) in the multiple liquid carbon dioxide (CO2) output pipes, so that the corresponding nozzle unit sprays out a consistent amount of snowflakes.

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