Device for feeding compressed air and either carbon dioxide or liquefied or supercritical dinitrogen monoxide into a hose

摘要

A supply pipe for supplying compressed air and either liquid or supercritical carbon dioxide or dinitrogen monoxide, wherein the compressed air and either liquid or supercritical carbon dioxide or dinitrogen monoxide are supplied from a source of compressed air through one or more connecting pipes Is supplied to a safety unit consisting of a hose and is then fed to a machine, preferably a machine for surface processing, wherein the connecting pipes each comprise at least two parts, and liquid or supercritical gas is supplied to at least a first part of the hose The safety unit consisting of a hose to interrupt the supply of the corresponding gas and the possible supply of compressed air in the event that the liquid or supercritical gas leaks slowly or suddenly from the first part of the hose,