Refrigeration – Automatic control – Refrigeration producer
Patent
1995-02-13
1996-12-10
Sollecito, John M.
Refrigeration
Automatic control
Refrigeration producer
62475, 62292, F25B 4304
Patent
active
055820239
ABSTRACT:
A portable apparatus for recovering refrigerant from a refrigeration system and delivering the refrigerant to a refrigerant storage tank. The recovery is automatically terminated when the liquid refrigerant occupies 80% of the volume of the recovery tank. The apparatus includes a liquid sensing thermistor that is in contact with the entering refrigerant to the recovery machine. When liquid is detected, it is routed directly to the recovery tank. Gaseous refrigerant and any non-condensable gases from the top of the recovery tank are directed to the suction of a compressor then to a condenser and to a purge vessel that functions as a receiver. When the entering refrigerant is in a gaseous phase, it is routed to the suction of the compressor. A second liquid sensing thermistor is in contact with the gaseous refrigerant from the top of the recovery tank and if liquid is detected the recovery process is terminated. A liquid sensing device near the bottom of the purge vessel actuates a solenoid valve to return the condensed liquid to the liquid inlet of the recovery tank. A cooling coil at the interior top of the purge vessel also condenses refrigerant. When non-condensable gases accumulate around the coil, there is less latent heat input to the coil and the suction line temperature drops. A temperature control with the sensing bulb at the suction line at a preset point actuates a solenoid valve in a line from the top of the purge vessel to purge the non-condensable gas through a small orifice to the atmosphere.
REFERENCES:
patent: 4766733 (1988-08-01), Scuderi
patent: 4862702 (1989-11-01), O'Neal
patent: 4981020 (1991-01-01), Scuderi
patent: 5005369 (1991-04-01), Manz
patent: 5063749 (1991-11-01), Manz
patent: 5181391 (1993-01-01), Manz
patent: 5193351 (1993-03-01), Laukhuf et al.
patent: 5195333 (1993-04-01), Van Steenburgh, Jr.
patent: 5291743 (1994-04-01), Van Steenburgh, Jr.
LandOfFree
Refrigerant recovery system with automatic air purge does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Refrigerant recovery system with automatic air purge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigerant recovery system with automatic air purge will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-417486