REFRIGERANT AMOUNT SHORTAGE DETECTION DEVICE AND REFRIGERATION CYCLE DEVICE

摘要

PROBLEM TO BE SOLVED: To properly determine shortage of a refrigerant in a refrigeration cycle device including an accumulator.SOLUTION: In a refrigerant detection device for detecting shortage of a refrigerant in a refrigeration cycle device 10 including a compressor 11 having a compression mechanism 11a sucking, compressing and discharging the refrigerant, a radiator 12 radiating heat from the refrigerant discharged from the compressor 11, a decompressing portion 14 for decompressing the refrigerant from which the heat is radiated by the radiator, evaporators 15, 20 for evaporating the refrigerant by making the refrigerant decompressed by the decompressing portion 14 absorb heat, and an accumulator 21 separating the refrigerant absorbing heat in the evaporators 15, 20 into gas and liquid, accumulating the separated liquid-phase refrigerant inside thereof, and making the separated gas-phase refrigerant flow out to a suction side of the compressor 11 with a lubricant mixed in the liquid-phase refrigerant, a determination portion 40 is further disposed to determine whether an amount of the refrigerant is insufficient or not on the basis of temperatures of heating elements 11b, 50 cooled by the refrigerant flowing out from the accumulator 21 and flowing into the compression mechanism 11a.SELECTED DRAWING: Figure 1