Refrigeration purge system Patent #: 4169356
ApplicationNo. 06/144139 filed on 04/28/1980
US Classes:62/195, Impurity removal62/475, Means for discharging impurity from system62/85Separating or preventing formation of undesirables
ExaminersPrimary: Wayner, William E.
Assistant: Tanner, Harry B.
Attorney, Agent or Firm
International ClassF25B 43/04 (20060101)
AbstractA refrigeration purging system for the removal of non-condensible gases such as air and condensible contaminants such as water is disclosed. A portion of the refrigerant in the refrigeration system is placed in a first purge chamber which condenses the refrigerant and condensible contaminants such as water leaving non-condensibles such as air and a small portion of the refrigerant at the top of the chamber. The non-condensibles and remaining refrigerant is extracted from the first chamber pumped to a higher pressure and passed to a second purged chamber wherein the remaining refrigerant is condensed and returned to the first purged chamber. The non-condensible gases remaining are released to the atmosphere. The condensible contaminants are extracted from the first purged chamber and the condensed refrigerant is returned to the refrigeration system. A control system for regulating the operation of the pump in relation to the amount of non-condensible gases in the first purged chamber is disclosed together with means to control the flow of condensed refrigerant between the two purged chambers.