Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/229770
Kind Code:
A1
Abstract:
This refrigeration device (1000) comprises a refrigerant circuit (RC) and a control device (7). The refrigerant circuit (RC) includes a compressor (1), a condenser (2), an expansion valve (3), and an evaporator (4), and a refrigerant circulates in the refrigerant circuit. The control device (7) executes a control process for suppressing the refrigeration capability of the compressor (1) in accordance with an operation state of the compressor (1) satisfying at least one condition among one or more conditions. The compressor (1) is controlled so as to stop operating when suction pressure has become less than a low-pressure cutoff value. The one or more conditions include: a first condition under which a state in which the operating frequency of the compressor (1) is below a first threshold has continued for a first defined time; and/or a second condition under which a time in which the compressor (1) has stopped during a second defined time exceeds a second threshold.
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Inventors:
MORITA HISATO (JP)
SATA HIROSHI (JP)
FUJIMOTO TOMOYA (JP)
SATA HIROSHI (JP)
FUJIMOTO TOMOYA (JP)
Application Number:
PCT/JP2020/019345
Publication Date:
November 18, 2021
Filing Date:
May 14, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Domestic Patent References:
| WO2019043939A1 | 2019-03-07 |
Foreign References:
| JP2015049022A | 2015-03-16 | |||
| JP2013040770A | 2013-02-28 | |||
| JP2007078339A | 2007-03-29 | |||
| JPH03211349A | 1991-09-17 | |||
| JP2016011768A | 2016-01-21 | |||
| JP2015049021A | 2015-03-16 | |||
| JPH07151394A | 1995-06-13 | |||
| JP2013113533A | 2013-06-10 | |||
| JP2009228922A | 2009-10-08 | |||
| JPS61116260A | 1986-06-03 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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