METHOD AND TOOL FOR CLEANING CAVITIES
First Claim
1. A method for cleaning cavities in workpieces, supercritical carbon dioxide being introduced into the cavity and the cavity being rinsed with the supercritical carbon dioxide, the supercritical carbon dioxide located in the cavity being relieved of pressure after rinsing of the cavity so that carbon dioxide gas and snow are formed in the cavity and subsequently driven out of the cavity.
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Accused Products
Abstract
A method for cleaning cavities in workpieces, a cleaning device for this purpose and a device for the supply of media to a cleaning device of this type. Supercritical carbon dioxide is introduced into the cavity and the cavity is rinsed. The supercritical carbon dioxide located in the cavity is relieved of pressure after rinsing of the cavity, so that carbon dioxide gas and carbon dioxide snow are formed in the cavity and subsequently driven out of the cavity.
13 Citations
15 Claims
- 1. A method for cleaning cavities in workpieces, supercritical carbon dioxide being introduced into the cavity and the cavity being rinsed with the supercritical carbon dioxide, the supercritical carbon dioxide located in the cavity being relieved of pressure after rinsing of the cavity so that carbon dioxide gas and snow are formed in the cavity and subsequently driven out of the cavity.
- 8. A device having a device for the supply of media to a cleaning device with fluid carbon dioxide as a cleaning medium, the device for the supply of media to a cleaning device with fluid carbon dioxide as a cleaning medium having a supply container for carbon dioxide, a fluid outlet which can be connected to a cleaning device and is connected to the supply container via a fluid pipe, a cooling unit which is disposed in the fluid pipe after the supply container, a high pressure pump which is disposed in the fluid pipe for producing a high operating pressure of the cleaning medium in the fluid pipe, a heating unit which is disposed in the fluid pipe after the cooling unit, and also a first controllable valve which is disposed in the fluid pipe, and a fluid bypass pipe around at least one of the pump and the heating device, said bypass pipe having a second controllable valve and having a cleaning device for cleaning a cavity in workpieces with an inlet and an outlet for a cleaning medium, the outlet being connected to the device for the supply of media the cleaning device having a lance having at least one outlet element which is suitable for introducing supercritical, liquid or gaseous CO2 into the cavity to be cleaned and converting it there into CO2 snow as a CO2 jet.
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11. (canceled)
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13. (canceled)
Specification