Refrigeration device and oil cooling device

A refrigeration apparatus comprising:

• a refrigerant circuit having a heat exchanger;
• a housing that houses at least the heat exchanger, the housing being provided with a suction port on an upstream side of the heat exchanger;
• and
• a filter attached to the suction port of the housing by using an attachment frame, the filter being configured to be held so as not to come into contact with the heat exchanger,
• when air containing oil mist is supplied to the heat exchanger via the filter, at least a part of an oil component in the air containing oil mist being trapped by the filter,
• the refrigeration apparatus further comprising an oil reservoir disposed below the heat exchanger when viewed in a direction perpendicular to an air flow direction through the filter, the oil reservoir being configured to collect the oil component trapped by the filter, and
• the attachment frame including a lower frame portion disposed below the filter when viewed in the direction perpendicular to the air flow direction, the lower frame portion including an inclined portion inclined toward a heat exchanger side and downward, the inclined portion being disposed below the filter when viewed in the direction perpendicular to the air flow direction, the inclined portion being longer than the filter in a direction parallel to the air flow direction, an upper end of the inclined portion being positioned below a lower end of the filter.