Patents Assigned to Air Liquide America Corporation
  • Process to clean a lubricated vapor compression refrigeration system by using carbon dioxide
    Patent number: 5375426
    Abstract: A process for removing lubricant, hydrocarbons and mixtures thereof from a vapor compression mechanical refrigeration system by using carbon dioxide as a solvent is disclosed. The process is carried out using supercritical, liquified or gaseous carbon dioxide and removes lubricant to a level below about 5% so as to be compatible with environmentally acceptable refrigerants.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: December 27, 1994
    Assignee: Air Liquide America Corporation
    Inventor: David Burgener