AIR-CONDITIONING SYSTEM, OPERATION MANAGEMENT METHOD, AND PROGRAM

Register WIPO Patent
Application Number JP2020005983
Publication Number 2021/166020
Status In Force
Filing Date 2020-02-17
Publication Date 2021-08-26
Owner HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japan)
Inventor
  • Mori Hayato
  • Yasuda Gen
  • Ohata Ryosuke
  • Tokudi Mikihito

Abstract

This air-conditioning system is equipped with a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and comprises: an acquisition unit that acquires the current value or power value, refrigerant suction pressure, refrigerant discharge pressure, refrigerant discharge temperature, and rotational speed of the compressor; an estimation unit that estimates the current value or power value of the compressor from the time variations in the refrigerant suction pressure, refrigerant discharge pressure, refrigerant discharge temperature, and rotational speed; and an output unit that outputs information relating to the deterioration of the compressor on the basis of the relationship between the estimated current value estimated by the estimation unit and the time variations in the actual current values acquired by the acquisition unit or the relationship between the estimated power value estimated by the estimation unit and the time variations in the actual power values acquired by the acquisition unit.

IPC Classes  ?