Collection method for gaseous or liquid phase materials

Details Collection method for gaseous or liquid phase materials Collection method for gaseous or liquid phase materials

1992-11-25

1994-12-27

Sollecito, John M.

Refrigeration

Processes

Assembling, charging, or repairing of refrigeration producer

62292, 62 555, F25B 4500

Patent

active

053754255

ABSTRACT:
Removal of refrigerant from a closed refrigeration system is achieved without pumping by developing a deep (e.g. 10 to 20 inches of mercury) partial vacuum in a collection vessel by reducing the temperature thereof. The partial vacuum is self-sustaining through the condensation and solidification of collected fluid at cryogenic temperatures and the reduction of vapor pressures thereof. The cryogenic material is preferably applied to the collection vessel by means of a bucket-shaped foam core in which the collection vessel is placed. Grooves formed on the interior of the core provide spacing and frictional engagement with the collection vessel while forming voids for maintaining a cryogenic material in contact with the collection vessel. The safety of a collection system employing the invention is enhanced since the amount of fluid collected can be regulated by the amount of cryogenic material used to condense and solidify the fluid.

REFERENCES:
patent: 4133663 (1979-01-01), Skinner
patent: 4150494 (1979-04-01), Rothchild
patent: 4350018 (1982-09-01), Frank et al.
patent: 4424680 (1984-01-01), Rothchild
patent: 4761961 (1988-08-01), Marx
patent: 4766733 (1988-08-01), Schuderi
patent: 4996848 (1991-03-01), Nelson et al.
patent: 5101637 (1992-04-01), Daily

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