| 摘要 |
<p>An air-conditioning device (1) wherein the operating capacity of a compressor (21) and/or the operating capacity of an outdoor fan (36) is changed, after which the change in the amount of refrigerant circulation passing through an upstream expansion valve (24, 26) and a downstream expansion valve (26, 24) is predicted, with the prediction condition being based on the correlation relationship between a high-pressure-side pressure difference (obtained by subtracting an intermediate pressure from a high pressure) and a low-pressure-side pressure difference (obtained by subtracting a low pressure from the intermediate pressure), and the predicted change in the amount of refrigerant circulation is taken into account to perform a control for changing the degree of opening of the upstream expansion valve (24, 26) and the downstream expansion valve (26, 24).</p> |
