Refrigeration apparatus-use unit, heat source unit, and refrigeration apparatus

A refrigeration apparatus-use unit for a refrigeration apparatus including a refrigerant circuit configured to perform a refrigeration cycle in which a pressure above a critical pressure is applied to a refrigerant,

• the refrigeration apparatus-use unit comprising
• a switching mechanism configured to switch a flow path of the refrigerant in the refrigerant circuit,
• wherein
• the switching mechanism includes:
• an electric motor;
• a flow path switching portion to be driven by the electric motor;
• a first port connected to a high-pressure flow path of the refrigerant circuit;
• a second port connected to a low-pressure flow path of the refrigerant circuit;
• and
• a third port connected to a predetermined flow path of the refrigerant circuit,
• the switching mechanism is switched to a first state in which the first port communicates with the third port or a second state in which the second port communicates with the third port in such a manner that the electric motor drives the flow path switching portion,
• the switching mechanism comprises an electrically driven three-way valve,
• the three-way valve comprises a first three-way valve and a second three-way valve,
• the first port of the first three-way valve is connected to a discharge side of a compression unit,
• the second port of the first three-way valve is connected to a suction side of the compression unit,
• the third port of the first three-way valve is connected to a gas end of a utilization-side heat exchanger,
• the first port of the second three-way valve is connected to the discharge side of the compression unit,
• the second port of the second three-way valve is connected to the suction side of the compression unit,
• the third port of the second three-way valve is connected to a gas end of a heat source-side heat exchanger,
• the compression unit includes a cooling facility-side compressor and an indoor-side compressor, which are in parallel to each other,
• a suction side of the cooling facility-side compressor is connected to a gas end of a cooling facility heat exchanger, and
• a suction side of the indoor-side compressor is connected to both the second port of the first three-way valve and the second port of the second three-way valve.