F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 43/02 (2006.01)
Patent
CA 2155011
An arrangement for removing from a refrigerating system or heat pump system a lubricating oil used together with a first type of refrigerant in the system and replacing this oil with an oil which is compatible with a second type of refrigerant, in conjunction with converting the refrigerating system or heat pump system from a system which operates with the first type of refrigerant to a system which operates with the second type of refrigerant. The arrangement includes an external apparatus (2) which is intended for connection to the system (1) to be cleansed. The external apparatus includes means (7, 10) for flushing the system with circulating refrigerant of the first type, this refrigerant being capable of dissolving the oil and, because it has a higher density than oil, also able to lift and entrain the oil. These means are intended to circulate the refrigerant through the whole or a selected part of the system (1) and the external apparatus (2). The arrangement also includes means (8) for vapourizing the refrigerant and oil mixture leaving the system so as to separate the oil from the refrigerant prior to returning the refrigerant to the system (1). The invention also relates to a method of cleansing a refrigerating machine or heat pump from oil.
Aka Industriprodukter Kyla Ab
Macera John Stephen
LandOfFree
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