Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/183560
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a refrigeration cycle device capable of optimally controlling its capacity. A refrigeration cycle device according to the present invention comprises: a compressor (3) having a variable rotation speed; and a control device (2) which calculates a rotation speed command of the compressor (3) for controlling the rotation speed of the compressor (3). The control device (2) includes: a capacity control unit (101) which calculates the rotation speed of the compressor (3) as the capacity rotation speed such that the current capacity value indicating the current capacity of the refrigeration cycle device (1) becomes a capacity target value that is timely determined; a protection control unit (102) which calculates the rotation speed of the compressor (3) as a protection rotation speed such that a protection variable, which is a variable related to a restriction item including protection on the refrigeration cycle device (1) becomes a protection target value that is timely determined; and a rotation speed selection unit (103) which selects, as the rotation speed command of the compressor (3), either one of the capacity rotation speed calculated by the capacity control unit (101) or the protection rotation speed calculated by the protection control unit (102), wherein the rotation speed command of the compressor (3) is calculated such that at least one among making the current capacity value close to the capacity target value, and making the protection variable close to the protection target value is satisfied.
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Inventors:
MORI YUKI (JP)
FUJITSUKA MASASHI (JP)
NAKAI TAKAHIRO (JP)
FUJITSUKA MASASHI (JP)
NAKAI TAKAHIRO (JP)
Application Number:
PCT/JP2019/009660
Publication Date:
September 17, 2020
Filing Date:
March 11, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Foreign References:
| JP2003326958A | 2003-11-19 | |||
| JP2008202905A | 2008-09-04 | |||
| JPH11159835A | 1999-06-15 | |||
| JP2015094504A | 2015-05-18 | |||
| JPH1019390A | 1998-01-23 | |||
| JP2005140411A | 2005-06-02 | |||
| JP2016080317A | 2016-05-16 | |||
| JP2005016753A | 2005-01-20 |
Other References:
See also references of EP 3926252A4
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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