| 摘要 |
<p>A refrigerant circuit A configured by connecting, by pipes, a compressor 10 that compresses a heat-source-side refrigerant, a first refrigerant flow switching device 11, a heat-source-side heat exchanger 12, an expansion device 26, and one or more intermediate heat exchangers 25 that exchange heat between a heat-source-side refrigerant and a heat medium that is different from the heat-source-side refrigerant; a heat medium circuit B configured by connecting, by pipes, one or more pumps 31 for allowing the heat medium subjected to the heat exchange by the intermediate heat exchangers 25 to circulate, a use-side heat exchanger 35 that exchanges heat between the heat medium and air in an air-conditioning target space, and flow switching devices 32 and 33 that switch, for the use-side heat exchanger 35, between the passage of the heated heat medium and the passage of the cooled heat medium; and a controller 60 that performs, at a time when a heat recovery defrosting operation for causing the heat-source-side refrigerant that has been heated by the heat medium in the intermediate heat exchangers 25 to flow into the heat-source-side heat exchanger 12 and performing defrosting is performed, control such that the pumps 31 are driven at a specific pump capacity or higher, are provided.</p> |
