Title:
ELECTRIC COMPRESSOR CONTROL DEVICE, ELECTRIC COMPRESSOR, AND ELECTRIC COMPRESSOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/239836
Kind Code:
A1
Abstract:
This electric compressor control device comprises: a control unit of an inverter which controls a motor that drives a compressor; a physical quantity calculation unit which calculates, on the basis of one or a plurality of predetermined detection values acquired from the inverter, a physical quantity that varies depending on a workload of the compressor; a number-of-revolutions acquisition unit which acquires the number of revolutions of the motor; a storage unit which stores information representing a first threshold that varies depending on the number of revolutions of the motor, and defines whether or not the physical quantity is a normal value; and a refrigerant abnormality determination unit which determines whether or not there is an abnormality in a refrigerant system by comparing the calculated physical quantity with the first threshold, depending on the acquired number of revolutions.
Inventors:
WATANABE KYOHEI (JP)
YOSHIOKA AKINORI (JP)
TAKEUCHI MAKOTO (JP)
HASE TOMOKI (JP)
MITSUMATA TAKASHI (JP)
HAMAMOTO SHINYA (JP)
YOSHIOKA AKINORI (JP)
TAKEUCHI MAKOTO (JP)
HASE TOMOKI (JP)
MITSUMATA TAKASHI (JP)
HAMAMOTO SHINYA (JP)
Application Number:
PCT/JP2022/020074
Publication Date:
November 17, 2022
Filing Date:
May 12, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F04B51/00; F24F11/38; F25B49/02; H02M7/48; F25B1/00
Domestic Patent References:
| WO2011099190A1 | 2011-08-18 | |||
| WO2019116471A1 | 2019-06-20 | |||
| WO2019176004A1 | 2019-09-19 | |||
| WO2017138167A1 | 2017-08-17 |
Foreign References:
| JP2017187226A | 2017-10-12 | |||
| JP2021080872A | 2021-05-27 | |||
| JP2004060457A | 2004-02-26 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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