Patent ID: 11906191
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 10:
11. The air-conditioning apparatus of claim 10, further comprising:
a refrigerant outlet temperature sensor installed between the second relay heat exchanger and the second flow switching device; and
a first liquid temperature sensor that detects a temperature of the non-azeotropic refrigerant mixture flowing in the refrigerant-refrigerant heat exchanger,
wherein the controller controls the first expansion device during the cooling operation, based on a temperature detected by the refrigerant outlet temperature sensor, such that the non-azeotropic refrigerant mixture that flows out of the first relay heat exchanger and the second relay heat exchanger has a quality of 0.9 or more or a degree of superheat of 3 K or less, and controls the first expansion device during the heating operation, based on a temperature detected by the first liquid temperature sensor or the refrigerant outlet temperature sensor, such that the non-azeotropic refrigerant mixture that flows out of the second relay heat exchanger has a quality of 0.2 or less or a degree of subcooling of 15 K or less.