Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/240616
Kind Code:
A1
Abstract:
Provided is a refrigeration cycle system comprising: a refrigerant circuit which includes a compressor; a heater which is provided to an intake pipe of the compressor; two temperature sensors which are provided to the intake pipe at a part upstream of the heater and a part downstream of the heater, respectively; a warning device which outputs a warning; and a control device. The control device uses the rotation speed of the compressor to calculate the requested heating amount of the heater (step S10), and causes the heater to operate so that the amount of heating by the heater becomes the requested heating amount (step S12). The control device calculates the difference between values detected by the two temperature sensors during the operation of the heater as the sensor temperature difference ΔT (step S14). When a period (liquid floodback operation period) during which the sensor temperature difference ΔT is less than a reference value Tref has exceeded a reference period (step S22), the control device causes the warning device to output a warning (step S24).
Inventors:
HIGASHIIUE SHINYA (JP)
Application Number:
PCT/JP2020/020610
Publication Date:
December 02, 2021
Filing Date:
May 25, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B49/02
Domestic Patent References:
| WO2015186257A1 | 2015-12-10 | |||
| WO2010106804A1 | 2010-09-23 |
Foreign References:
| JPS63169461A | 1988-07-13 | |||
| JPH05113252A | 1993-05-07 | |||
| JP2007255736A | 2007-10-04 | |||
| JP2007051821A | 2007-03-01 | |||
| JPH08240349A | 1996-09-17 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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