Air conditioner

An air conditioner, comprising:

• an outdoor unit, including:
• a compressor configured to compress a refrigerant, so as to drive the refrigerant to circulate in the air conditioner;
• a first heat exchanger configured to perform one of liquefaction and vaporization of the refrigerant;
• a liquid storage device configured to store the refrigerant;
• and
• a first throttling device, a first end of the first throttling device communicating with a liquid side of the first heat exchanger, and a second end of the first throttling device communicating with the liquid storage device;
• a plurality of indoor units communicating with the outdoor unit, each of the plurality of indoor units including:
• a second heat exchanger configured to perform another one of the liquefaction and the vaporization of the refrigerant;
• and
• a second throttling device, a first end of the second throttling device communicating with a liquid side of the second heat exchanger, and a second end of the second throttling device communicating with the liquid storage device;
• and
• a controller coupled to the first throttling device and the second throttling device, the controller being configured to regulate amount of the refrigerant in the in the liquid storage device by regulating an opening degree of at least one of the first throttling device or the second throttling device, so as to regulate the amount of refrigerant participating in a cycle in the air conditioner;
• wherein
• the first throttling device is configured to regulate a flow rate of the refrigerant flowing through the first throttling device through the controller, the second throttling device is configured to regulate a flow rate of the refrigerant flowing through the second throttling device through the controller;
• the controller is further configured to:
• regulate the opening degree of the first throttling device, in a case where the air conditioner is in a cooling mode, so that a first supercooling temperature of the liquid side of the first heat exchanger is within a preset first supercooling temperature range;
• and
• regulate the opening degree of the second throttling device, in a case where the air conditioner is in a heating mode, so that a plurality of second supercooling temperatures of the liquid sides of the plurality of second heat exchangers each are within a preset second supercooling temperature range, and an absolute value of a difference between each of the plurality of second supercooling temperatures and an average value of the plurality of second supercooling temperatures is less than or equal to a preset first threshold.