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Title:
CONTROL DEVICE FOR REFRIGERATION CYCLE DEVICE AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/111559
Kind Code:
A1
Abstract:
This control device (110) is provided with a memory (112) that stores a target value for a physical quantity to be controlled and a CPU (111). The CPU (111) executes: i) abnormality sensing processing in which abnormalities in an electronic expansion valve (5) are sensed on the basis of the physical quantity and the target value stored in the memory (112); ii) valve action confirmation processing in which, if an abnormality in the electronic expansion valve (5) is sensed by the abnormality sensing processing, a command to change aperture is sent to the electronic expansion valve (5) and it is determined whether or not a change corresponding to the command has been observed in the physical quantity; and iii) stop processing in which, if the change is not observed in the physical quantity by the valve action confirmation processing, stops a refrigeration cycle device (100, 200).

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Inventors:
MATSUO MITSUAKI (JP)
ISHIHARA NOBUYA (JP)
YASHIRO TAKANORI (JP)
Application Number:
PCT/JP2019/047499
Publication Date:
June 10, 2021
Filing Date:
December 04, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B49/02
Foreign References:
US20100174412A12010-07-08
JP2010065982A2010-03-25
CN104482638A2015-04-01
JP2008082654A2008-04-10
JP2005069683A2005-03-17
JP2009145006A2009-07-02
JPH05332647A1993-12-14
US20140266755A12014-09-18
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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