| 主权项 |
1. An air-conditioning apparatus, comprising:
a refrigerant circuit that connects a compressor, a first refrigerant flow switching device, a heat source side heat exchanger, a plurality of first expansion devices, and refrigerant side passages of a plurality of heat exchangers related to a heat medium by refrigerant pipes, the refrigerant circuit circulating a heat source side refrigerant; a heat medium circuit that connects a pump, a use side heat exchanger, and heat medium side passages of the plurality of heat exchangers related to heat medium by heat medium pipes, the heat medium circuit circulating the heat medium; and the heat source side refrigerant and the heat medium exchanging heat in each of the heat exchangers related to heat medium, wherein a zeotropic refrigerant mixture, in which a saturated liquid refrigerant temperature is lower than a saturated gas refrigerant temperature under a same pressure condition, is used as the heat source side refrigerant, when at least one of the heat exchangers related to heat medium is functioning as an evaporator, an anti-freezing control that prevents the heat medium from freezing is executed if a temperature obtained by subtracting a freezing temperature correction value set as a positive value corresponding to a temperature difference between the saturated gas refrigerant temperature and the saturated liquid refrigerant temperature of the heat source side refrigerant from an evaporating temperature of the refrigerant in an inlet side of the at least one of the heat exchangers related to heat medium drops below an anti-freezing temperature, wherein the freezing temperature correction value is obtained by multiplying a coefficient by the temperature difference between the saturated gas refrigerant temperature and the saturated liquid refrigerant temperature, or is obtained by multiplying a weighting coefficient by the saturated gas refrigerant temperature and the saturated liquid refrigerant temperature, and wherein the coefficient is other than 1. |
