Title:
REFRIGERATION CYCLE DEVICE AND METHOD FOR MANAGING REFRIGERANT TEMPERATURE IN REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/039707
Kind Code:
A1
Abstract:
The present invention performs management so that refrigerant discharged in a refrigeration cycle does not exceed a prescribed temperature. An air conditioner (100) according to the present invention comprises: a refrigeration cycle that includes compressors (11a, 11b), a condenser, an evaporator, and an evaporator-side expansion valve, and through which refrigerant containing CF3I circulates; intake pressure sensors (21a, 21b) for measuring the intake pressure of refrigerant entering the compressors (11a, 11b); discharge pressure sensors (22a, 22b) for measuring discharge pressure; and a control means for controlling the refrigeration cycle so as to lower the temperature of refrigerant discharged from the compressors (11a, 11b) in a region in which the discharged refrigerant temperature as estimated from the intake pressure and discharge pressure is at least a prescribed value.
Inventors:
NAITO KOJI (JP)
TADA SHUUHEI (JP)
INOUE TAKASHI (JP)
UEDA HIDEYUKI (JP)
TADA SHUUHEI (JP)
INOUE TAKASHI (JP)
UEDA HIDEYUKI (JP)
Application Number:
PCT/JP2019/023403
Publication Date:
February 27, 2020
Filing Date:
June 13, 2019
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
F25B1/00; F25B13/00
Domestic Patent References:
| WO2015140874A1 | 2015-09-24 | |||
| WO2016181529A1 | 2016-11-17 |
Foreign References:
| JP2014006042A | 2014-01-16 | |||
| JP2009127902A | 2009-06-11 | |||
| JPH11228947A | 1999-08-24 | |||
| JP2000178543A | 2000-06-27 | |||
| JP2007198230A | 2007-08-09 | |||
| JP2004012127A | 2004-01-15 | |||
| JP2001174075A | 2001-06-29 | |||
| JPS62111190A | 1987-05-22 | |||
| JP2008128493A | 2008-06-05 | |||
| JP2015068609A | 2015-04-13 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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