Defrost gas conditioner for air cooled reverse cycle defrost refrigeration system

Patent · Tue Jan 19 04:00:00 EST 1988

OSTI ID:5403446

Morris, Jr, W F

This patent describes a reverse cycle defrost refrigeration system having a compressor, an air cooled condenser and evaporator means having surfaces for forming ice thereon during a freezing cycle and arranged to discharge the ice therefrom during a defrost cycle, conduit means for conducting gaseous refrigeration from the compressor to the condenser to be condensed to liquid refrigerant in the condenser and conduit means for conducting the liquid refrigerant to the evaporator means during the freezing cycle, defrost cycle means including a defrost conduit means having defrost solenoid valve connected to the condenser hot gas supply form the compressor and a discharge conduit connected thereto and to the evaporator means to supply hot gaseous refrigerant to the evaporator means during the defrost cycle. The defrost conduit means is connected to the condenser for releasing flash gas from the condenser to the evaporator at the time the defrost solenoid valve opens. The improvement comprises means for conditioning warm defrost gaseous refrigerant which passes back through the discharge conduit to the defrost solenoid valve and the evaporator means at the beginning of the defrost cycle from carrying slugs of liquid refrigerant that may be in the condenser into the discharge conduit and evaporator means and compressor including a liquid separator surge tank and an inlet conduit connected to the top of the surge tank.

• Assignee: NOV; EDB-88-078285; NOV-88-003083
• Patent Number(s): US 4719766
• OSTI ID: 5403446
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
AIR FLOW
COMPRESSORS
CONDENSERS
CONTROL EQUIPMENT
DEFROSTING
DESIGN
EQUIPMENT
EVAPORATORS
FLOW REGULATORS
FLUID FLOW
FREEZING
GAS FLOW
ICE
OPERATION
REFRIGERATORS
VALVES