Patent ID: 11371743

Abstract:
An air conditioning system capable of reducing noise incidental to gas-liquid two-phase transfer is provided. The air conditioning system (100) performs a refrigeration cycle in a refrigerant circuit (RC) including an outdoor unit (10), a plurality of indoor units (40), and a liquid-side connection pipe (LC) connecting the outdoor unit (10) and the indoor units (40). The air conditioning system (100) includes a second outdoor control valve (17, electric valve) decompressing the refrigerant flowing in the refrigerant circuit (RC) in accordance with an opening degree, an operating-capacity variation detection portion (74, detection portion) detecting change of the number of operating units in accordance with device information, and a device control portion (75, control portion) controlling a state of the second outdoor control valve (17). The device control portion (75) executes first control (feed-forward control) when the change of the number of operating units is detected by the operating-capacity variation detection portion (74), and adjusts the opening degree of the second outdoor control valve (17) to suppress a rise of pressure of the refrigerant flowing into the operating unit.