A refrigeration apparatus configured from a parallel connection of a plurality of outdoor units to an indoor unit , the refrigeration apparatus comprising: a refrigerant circuit configured from a connection of: an indoor heat exchanger and an indoor expansion valve provided to the indoor unit ; and outdoor heat exchangers , compressors , and switching valves provided to the respective outdoor units ; and a control unit having a partial defrost mode in which an operation is performed with the switching valves having been switched so that the outdoor heat exchangers of some of the plurality of outdoor units are caused to function as condensers while the outdoor heat exchangers of the rest of the plurality of outdoor units are caused to function as evaporators, whereby the outdoor heat exchangers functioning as the condensers are designated as components to be defrosted, wherein the refrigerant circuit , during execution of the partial defrost mode, having a flow channel that supplies some of the refrigerant flowing out of the outdoor heat exchangers functioning as condensers to the outdoor heat exchangers functioning as evaporators, and a flow channel that supplies the rest of the refrigerant flowing out of the outdoor heat exchangers functioning as condensers to the indoor heat exchanger, characterised in that the refrigerant circuit , during execution of the partial defrost mode, has a flow channel that supplies refrigerant that has passed through the indoor heat exchanger to intake sides of the compressors of the outdoor units having the outdoor heat exchangers functioning as condensers, and the control unit executes an indoor expansion valve opening degree adjustment mode of performing opening degree control for the indoor expansion valve so that a degree of superheating of refrigerant in the compressors of the outdoor units having the outdoor heat exchangers functioning as condensers meets a predetermined degree of superheating condition. a refrigerant circuit configured from a connection of: an indoor heat exchanger and an indoor expansion valve provided to the indoor unit ; and outdoor heat exchangers , compressors , and switching valves provided to the respective outdoor units ; and an indoor heat exchanger and an indoor expansion valve provided to the indoor unit ; and outdoor heat exchangers , compressors , and switching valves provided to the respective outdoor units ; and a control unit having a partial defrost mode in which an operation is performed with the switching valves having been switched so that the outdoor heat exchangers of some of the plurality of outdoor units are caused to function as condensers while the outdoor heat exchangers of the rest of the plurality of outdoor units are caused to function as evaporators, whereby the outdoor heat exchangers functioning as the condensers are designated as components to be defrosted, wherein the refrigerant circuit , during execution of the partial defrost mode, having a flow channel that supplies some of the refrigerant flowing out of the outdoor heat exchangers functioning as condensers to the outdoor heat exchangers functioning as evaporators, and a flow channel that supplies the rest of the refrigerant flowing out of the outdoor heat exchangers functioning as condensers to the indoor heat exchanger, characterised in that the refrigerant circuit , during execution of the partial defrost mode, has a flow channel that supplies refrigerant that has passed through the indoor heat exchanger to intake sides of the compressors of the outdoor units having the outdoor heat exchangers functioning as condensers, and the control unit executes an indoor expansion valve opening degree adjustment mode of performing opening degree control for the indoor expansion valve so that a degree of superheating of refrigerant in the compressors of the outdoor units having the outdoor heat exchangers functioning as condensers meets a predetermined degree of superheating condition. <EOS>