US 11,927,376 B2
Refrigeration cycle apparatus
Yusuke Tashiro, Tokyo (JP); Yasuhide Hayamaru, Tokyo (JP); Masakazu Kondo, Tokyo (JP); Masakazu Sato, Tokyo (JP); and Atsushi Kawashima, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/613,814
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jul. 25, 2019, PCT No. PCT/JP2019/029212
§ 371(c)(1), (2) Date Nov. 23, 2021,
PCT Pub. No. WO2021/014640, PCT Pub. Date Jan. 28, 2021.
Prior Publication US 2022/0252314 A1, Aug. 11, 2022
Int. Cl. F25B 47/02 (2006.01); F24F 11/42 (2018.01); F25B 1/00 (2006.01)
CPC F25B 47/02 (2013.01) [F24F 11/42 (2018.01); F25B 1/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A refrigeration cycle apparatus comprising:
a compressor;
an indoor heat exchanger;
an outdoor heat exchanger including a first outdoor heat exchanger and a second outdoor heat exchanger;
a bypass flow passage configured to cause a discharge side of the compressor to communicate with the first outdoor heat exchanger or the second outdoor heat exchanger;
a flow control valve provided at the bypass flow passage; and
a controller configured to perform a heating operation and a simultaneous heating and defrosting operation, the heating operation being an operation in which the first outdoor heat exchanger and the second outdoor heat exchanger are each caused to operate as an evaporator and the indoor heat exchanger is caused to operate as a condenser, the simultaneous heating and defrosting operation being an operation in which part of refrigerant discharged from the compressor is supplied to one of the first outdoor heat exchanger and the second outdoor heat exchanger through the bypass flow passage, the other of the first outdoor heat exchanger and the second outdoor heat exchanger is caused to operate as an evaporator, and the indoor heat exchanger is caused to operate as a condenser,
wherein the controller is configured to change, when the simultaneous heating and defrosting operation is performed, an upper limit frequency of the compressor to a value higher than the upper limit frequency of the compressor in the heating operation,
wherein the upper limit frequency of the compressor is an upper limit value of an operation frequency range of the compressor.