| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for a heat pump, which is capable of converging the quantities of state of necessary refrigerant to an objective value in a short period of time even when the number of sets of operated indoor machines is increased or decreased. SOLUTION: In a heat pump, a plurality of sets of indoor machines are connected to one set of outdoor machine while the quantities of state of refrigerant, flowing through the refrigerating circuit of a heat pump, is regulated by controlling the rotating number of a compressor and the opening of an expansion valve. An estimating device, operating the number of rotation of the compressor and the opening of the expansion valve to converge the discharging pressure and a superheating degree in the outlet port of the compressor to predetermined values when the operating capacity of an operating indoor machine is fluctuated, is provided.
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