초록 ▼

A refrigerating cycle apparatus for averting shortages of its refrigerant in a refrigerating cycle and of oil reflux regardless of fluctuations in the progress of freezing in a cold accumulating material. In operation, two solenoid valves are opened and a compressor is activated. The activated compr

A refrigerating cycle apparatus for averting shortages of its refrigerant in a refrigerating cycle and of oil reflux regardless of fluctuations in the progress of freezing in a cold accumulating material. In operation, two solenoid valves are opened and a compressor is activated. The activated compressor causes stagnant refrigerant inside a cold accumulating evaporator to be collected into a receiver. Thereafter, one solenoid valve is closed to let the refrigerant flow only to the cold accumulating evaporator. This makes it possible to circumvent shortages of the refrigerant in the refrigerating cycle and of oil reflux irrespective of varying progress in the freezing status of the cold accumulating material.

대표청구항 ▼

[ What is claimed is:] [11.] A method of controlling a refrigerating circuit including a compressor and first and second air conditioning units in parallel fluid communication therewith, comprising the steps of:determining if a temperature at the first air conditioning unit is less than a first pred

[ What is claimed is:] [11.] A method of controlling a refrigerating circuit including a compressor and first and second air conditioning units in parallel fluid communication therewith, comprising the steps of:determining if a temperature at the first air conditioning unit is less than a first predetermined temperature;determining if a temperature at the second air conditioning unit is less than a second predetermined temperature if the temperature at the first air conditioning unit is less than the first predetermined temperature;cutting off a flow of refrigerant to both the first and second air conditioning units when the temperature at the second air conditioning unit is less than the second predetermined temperature; andcausing the compressor to suck stagnant refrigerant from the second air conditioning unit when the temperature at the second conditioning unit is less than the second predetermined temperature and until a predetermined circuit condition is reached.