To provide a refrigerating apparatus, always supplying a suitable quantity of lubricating oil from an oil separator to a refrigerant sucked into a compressor to stably lubricate the compressor.

This refrigerating apparatus includes the compressor 3, which is driven by an external driving source and whose rotational frequency depends on the external driving source, wherein the apparatus further includes: a lubricating oil retaining quantity estimating part 33 for estimating the retaining quantity of lubricating oil retained in a main refrigerant circuit 2 from the oil separator 4 to the compressor 3 and a hot gas bypass circuit 16; and a control part 32 for causing a refrigerant to flow through both the main refrigerant circuit 2 and the hot gas bypass circuit 16 to perform the lubricating oil recovery operation when the lubricating oil retaining quantity estimating part 33 estimates that a predetermined quantity or more lubricating oil retains the main refrigerant circuit 2 from the oil separator 4 to the compressor 3 and the hot gas bypass circuit 16.