HEAT SOURCE UNIT OF AIR CONDITIONER AND AIR CONDITIONER

摘要

A heat source unit applicable to both an air conditioner for cooling/heating switching operation and an air conditioner for cooling/heating simultaneous operation. The air conditioner (1) comprises a heat source unit (2), a plurality of utilization units (3), and connection units (4) provided in association with the utilization units (3). The heat source unit (2) utilizes water as a heat source and comprises a compressing means (21), a main heat exchanger (22), a first switching means (V1), a main refrigerant open/close means (V2), an auxiliary heat exchanger (23) connected in parallel with the main heat exchanger (22), a second switching means (V3), an auxiliary refrigerant open/close means (V4), and a liquid receiver (24). The auxiliary heat exchanger (23) can be switched by the second switching means (V3) as an evaporator and a condenser.