REFRIGERATION CYCLE DEVICE

REFRIGERATION CYCLE DEVICE

The present invention includes a refrigeration cycle circuit that includes compressor (102), indoor heat exchanger (103), expansion valve (104), and outdoor heat exchanger (105) that are connected to each other. A working fluid containing R1123 (1,1,2-trifluoroethylene) and R32 (difluoromethane) is...

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Hauptverfasser: Hideaki MATSUO, Fuminori SAKIMA, Akihiro KYOGOKU, Hiroaki NAKAI, Shigehiro SATO, Kenji TAKAICHI, Akira FUJITAKA
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creator Hideaki MATSUO
Fuminori SAKIMA
Akihiro KYOGOKU
Hiroaki NAKAI
Shigehiro SATO
Kenji TAKAICHI
Akira FUJITAKA
description The present invention includes a refrigeration cycle circuit that includes compressor (102), indoor heat exchanger (103), expansion valve (104), and outdoor heat exchanger (105) that are connected to each other. A working fluid containing R1123 (1,1,2-trifluoroethylene) and R32 (difluoromethane) is used as a refrigerant sealed in the refrigeration cycle circuit, and an electric motor driving device that drives an electric motor of compressor (102) includes a rotational speed estimator. The rotational speed estimator estimates rotational speed based on information on a detection value of an electric current input to the electric motor or a magnetic pole position of a rotor that constitutes the electric motor. Figure 1
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