Patent ID: 11971203
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 23:
24. The refrigerant amount determining device according to claim 1, wherein the, first, operation data includes at least one of:
opening degree of an indoor unit expansion valve,
opening degree of an outdoor unit main expansion valve,
total value of rated power of an indoor unit during operation or standby,
number of indoor units in operation,
power of the indoor unit (cooling or heating),
blowout temperature of the indoor unit,
room temperature,
condensation temperature,
evaporation temperature,
refrigerant temperature of an outdoor unit liquid shutoff valve connection pipe,
refrigerant temperature of a liquid connection pipe,
flow rate of an outdoor unit fan,
flow rate of an indoor unit fan,
rotation speed of the outdoor unit fan,
rotation speed of the indoor unit fan,
value of current of the outdoor unit fan,
value of current of the indoor unit fan,
discharge temperature of a compressor,
suction temperature of the compressor,
degree of superheating in discharge of the compressor,
degree of superheating in suction of the compressor,
degree of subcooling at a subcooling heat exchanger outlet,
degree of superheating at the subcooling heat exchanger outlet (a gas pipe side),
degree of subcooling at an economizer outlet,
opening degree of an expansion valve for an economizer,
outlet pressure of the economizer bypass side,
opening degree of the expansion valve for intermediate injection,
intermediate injection temperature,
intermediate injection pressure,
water temperature of an evaporator inlet,
water temperature of an evaporator outlet,
water temperature of a condenser inlet, or
water temperature of a condenser outlet.