Patent ID: 11885548
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. The refrigeration cycle apparatus of claim 2, further comprising a temperature sensor configured to detect a temperature of a refrigerant pipe that connects the compressor and the condenser,
wherein
the injection pipe includes
a first outflow pipe and a second outflow pipe that are included in the refrigerant outflow side end,
a first on-off valve configured to open and close a flow passage of the first outflow pipe, and
a second on-off valve configured to open and close a flow passage of the second outflow pipe,

where an inflow port through which refrigerant that has flowed through the first outflow pipe flows into the suction chamber is a first inflow port, and an inflow port through which refrigerant that has flowed through the second outflow pipe flows into the suction chamber is a second inflow port, a distance between the second inflow port and a refrigerant suction port of the compression mechanism unit is longer than a distance between the first inflow port and the refrigerant suction port of the compression mechanism unit, and
the controller is configured to:
close the second on-off valve and open the first on-off valve, when during a low load operation, the temperature detected by the temperature sensor is higher than a specified temperature; and
close the first on-off valve and open the second on-off valve, when the temperature detected by the temperature sensor drops to the specified temperature.