Air conditioner

Abstract

An air-conditioning apparatus is provided which is capable of controlling power usage within power limits of a power supply in a relatively small air-conditioning apparatus in which a condenser is placed below an evaporator and effectively using the air-conditioning (cooling) capacity. An air-conditioning apparatus 100 includes a housing 60 configured to accommodate a refrigerant circuit R having: a compressor 10; a condenser 20; an evaporator 30; and an expansion device 40, and a control device 50, in which the control device 50 includes: an upper operation limit value decision unit 502; a rotation speed command value decision unit 503; and a compressor rotation control unit 506, the upper operation limit value decision unit 502 executes control of deciding an upper operation limit value Rrmax of the compressor 10 with reference to a load on the compressor 10, the rotation speed command value decision unit 503 executes control of: deciding a rotation speed command value Rc with reference to a target discharge temperature Ttgt and a present rotation speed Rnow of the compressor 10 in a case where the load is relatively low; and deciding that the present rotation speed Rnow or the upper operation limit value Rrmax is a rotation speed command value Rc in a case where the load is relatively high, and the compressor rotation control unit 506 controls the drive of the compressor 10 on the basis of the rotation speed command value Rc.

Dependencies are inferred from the claim text.