Air conditioner having refrigerant pressure control means and driving control method therefor

摘要

An air conditioner including at least two kinds of refrigerant which are circulated in a refrigerant circuit and have different characteristics, a calculator (103) for calculating the driving capacity of a compressor (1) in accordance with a request load (101) of the refrigerant circuit and outputting a driving capacity signal representing the driving capacity, a driving unit (38,40) for controlling the driving capacity of the compressor (1) so as to obtain the driving capacity corresponding to the driving capacity signal of the calculator (103), and correcting means (107) for correcting the driving capacity signal so as to reduce the driving capacity when the refrigerant pressure in the refrigerant circuit exceeds a first pressure value.