Method for cooling and/or separating adhesively bonded components and/or removing adhesive residues from surfaces and jet apparatus herefor

A method for embrittling an adhesive surface of a first part for the purpose of separating the adhesive surface from a second art, the method comprising:

• guiding liquid carbon dioxide from a supply through a first dosing unit and then passing the liquid carbon dioxide into a jet device and into an expansion chamber of the jet device,
• supplying a cold-resistant liquid to a mixture of gaseous carbon dioxide and carbon dioxide particles produced in the expansion chamber and mixing the cold-resistance liquid with the mixture of the gaseous carbon dioxide and the carbon dioxide particles to form a coolant mixture, and
• ejecting the coolant mixture from the jet device as a coolant via an outlet opening of the jet device,
• providing an adhesive connection between the first and second parts, wherein the adhesive connection is to be separated,
• covering a section of the adhesive connection with a cooling head,
• introducing the coolant mixture between the cooling head and the section of the adhesive connection covered by the cooling head.

A method of embrittling an adhesive surface of a first part for the purpose of separating the adhesive surface from a second part, the method comprising:

• providing a jet device, the jet device comprising:
• a supply unit for liquid carbon dioxide,
• a first dosing unit for the liquid carbon dioxide,
• an expansion chamber,
• an outlet opening,
• a first line section ending at the outlet opening, wherein the first line section is a part of the expansion chamber,
• a second dosing unit for a cold-resistant liquid,
• a second line section, and
• a connection between the second line section and the expansion chamber for supplying the cold-resistance liquid to the expansion chamber,
• passing liquid carbon dioxide from the supply unit through the first dosing unit and then into the expansion chamber,
• passing the cold-resistant liquid through the second dosing unit, the second line section and the connection to a mixture of gaseous carbon dioxide and carbon dioxide particles produced in the expansion chamber and mixing the cold-resistant liquid with the mixture of the gaseous carbon dioxide and the carbon dioxide particles to form a coolant mixture,
• electing the coolant mixture from the jet device as a coolant via the outlet opening of the jet device, and
• directing the coolant mixture towards the first and/or second parts and/or towards an adhesive connection between the first and second parts to embrittle the adhesive connection by lowering a temperature of the adhesive connection to −40° C. or lower so that a mechanical separation of the parts is possible.