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|1. (WO2018105041) REFRIGERATION CYCLE APPARATUS|
|Applicants:||MITSUBISHI ELECTRIC CORPORATION
MITSUBISHI ELECTRIC BUILDING TECHNO-SERVICE CO.,LTD.
|Title:||REFRIGERATION CYCLE APPARATUS|
A control device of this refrigeration cycle apparatus includes: an operation state acquisition unit that successively acquires data at least including as components thereof, time, the rotational speed of a compressor, the detection result from a liquid surface sensor, first pressure, and second pressure; a classification unit that classifies a plurality of data sets of which the time is included in a period from a first time to a second time that is later than the first time, according to a plurality of rotational speed ranges relating to the rotational speed and a plurality of liquid surface height ranges relating to the liquid surface; a determination reference value acquisition unit that acquires a determination reference value indicating the deterioration trend of the compressor on the basis of the first pressure and the second pressure of the data sets classified by the classification unit; and a deterioration determination unit that determines the deterioration of the compressor by using the determination reference value.