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Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/180820
Kind Code:
A1
Abstract:
This air-conditioning device (10) comprises: a refrigerant circuit (20), which includes a compressor (1), an outdoor heat exchanger (4), an indoor heat exchanger (2), and a pressure-reducing device (3), and through which a refrigerant is caused to circulate; a plurality of sensors (61)-(68) that detect the state of the refrigerant circuit; and a control device (100) that controls the refrigerant circuit on the basis of the result of detection by the plurality of sensors (61)-(68). The control device (100): compares an assessment value obtained on the basis of a detection value of a sensor selected from among the plurality of sensors (61)-(68) and a threshold value obtained on the basis of the detection value of the sensor selected from among the plurality of sensors (61)-(68) (S5, S14, S24, S34); and assesses, on the basis of the result of comparison, whether a reference quantity of a refrigerator oil is reserved inside the compressor (S5, S14, S24, S34).

Inventors:
YUASA RYOTA (JP)
ISHIYAMA HIROKI (JP)
Application Number:
PCT/JP2021/007497
Publication Date:
September 01, 2022
Filing Date:
February 26, 2021
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Foreign References:
JP2018004106A2018-01-11
JP2017053570A2017-03-16
JP2011117626A2011-06-16
JP2011117626A2011-06-16
JP2017156003A2017-09-07
JP2018004106A2018-01-11
Other References:
See also references of EP 4300005A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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