Refrigerant reclamation and purification apparatus and method

Refrigeration – Processes – Separating or preventing formation of undesirables

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Details

62475, 62292, 62149, 62195, F25B 4700

Patent

active

055355960

ABSTRACT:
A portable refrigerant reclamation and purification apparatus removes moisture, oil, solid particulates, non-condensables, acid and other contaminants from refrigerant. Contaminated refrigerant is introduced into a separation chamber and vaporized as it passes over heat exchanger coils. During vaporization the bulk of contaminants are separated from the refrigerant and fall into a sump and the vapors are redirected 180.degree. to an upward flow separating the contaminants from the refrigerant vapors. The vapors are drawn out of the chamber through demisting screens which strip remaining contaminants from the vapors and pass through a suction accumulator to either a compressor. The compressed gases are passed through an oil separator. and then either through the heat exchangers in the separation chamber to vaporize incoming liquid refrigerant, or to a condenser coil and then passed through a sub-cooling coil in the chamber over which the vapors drawn from the chamber pass, to lower the temperature of the refrigerant in the sub-cooling coil. The sub-cooled liquid refrigerant passes through a receiver where non-condensables are separated and purged from the system and the condensed liquid refrigerant is then passed through filters.

REFERENCES:
patent: 4809520 (1989-03-01), Manz et al.
patent: 5022230 (1991-06-01), Todack
patent: 5172562 (1992-12-01), Manz et al.
patent: 5363662 (1994-11-01), Todack

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