Self-sustained liquid circulating seal system

Claim 1

IN A CLOSED REFRIGERATION SYSTEM CIRCULATING ABSORBENT SOLUTION INCORPORATING A REFRIGERANT IN LIQUID AND VAPOR PHASE AT PRESSURE BELOW ATMOSPHERIC AND COMPRISING; AN EVAPORATOR HAVING A COIL INCLUDING UPSTREAM AND DOWNSTREAM SIDES AND CARRYING CHILLED LIQUID, A GENERATOR, A CONDENSER AND AN ABSORBER, A MOTOR DRIVEN PUMP PUMPING AT LEAST A PORTION OF THE ABSORBENT SOLUTION IN LIQUID PHASE, SAID MOTOR DRIVING PUMP INCLUDING A LIQUID SEAL ASSOCIATED THEREWITH PREVENTING LEAKAGE OF AIR TO THE CLOSED SYSTEM, A LIQUID SEAL COOLING CIRCUIT COMPRISING: (A) A RESERVOIR FORMING SEPARATE CHAMBERS FOR STORAGE AND COOLING OF A LIQUID SEALANT, (B) SAID RESPECTIVE STORAGE AND COOLING CHAMBERS BEING COMMUNICATED TO PASS LIQUID THEREBETWEEN AND BEING POSITIONED SUBSTANTIALLY EQUIDISTANT ABOVE THE PUMP LIQUID SEAL, (C) A COIL CARRIED IN THE COOLING CHAMBER HAVING INLET AND OUTLET OPENINGS AND CIRCULATING A CHILLED MEDIUM, (D) A SEALANT LIQUID CARRYING LOOP HAVING CONDUIT LEGS COMMUNICATING THE PUMP LIQUID SEAL WITH THE RESPECTIVE STORAGE AND COOLING CHAMBERS, (E) LIQUID SEALANT FLOWING IN ONE OF THE CONDUIT LEGS IN COMMUNICATION WITH THE COOLING CHAMBER BEING NORMALLY AT A LOWER TEMPERATURE THAN LIQUID SEALANT FLOWING IN THE OTHER OF SAID LEGS (F) WHEREBY CHILLED SEALANT FLOWING IN SAID ONE LEG HAVING A GREATER DENSITY THAN WARMER COOLANT IN THE OTHER LEG WILL INDUCE CONTINUOUS LIQUID CIRCULATION IN THE LIQUID CARRING LOOP.