Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/203608
Kind Code:
A1
Abstract:
A refrigeration cycle device is provided with: a refrigerant circuit; liquid injection piping that branches from piping between a condenser and a pressure-reducing device of the refrigerant circuit, the liquid injection piping being connected to a liquid injection port of a screw compressor; an adjustment device provided to the liquid injection piping, the adjustment device adjusting the amount of liquid injection; and a control device for controlling the adjustment device. The control device performs a control for controlling the adjustment device during operation of the screw compressor such that the discharge temperature of refrigerant discharged from the screw compressor reaches a target discharge temperature, and when the operation of the screw compressor is stopped, the control device stops after controlling the adjustment device such that the liquid injection amount increases.
Inventors:
KAMIKAWA MASAAKI (JP)
KANDA MASAHIRO (JP)
KANDA MASAHIRO (JP)
Application Number:
PCT/JP2016/065339
Publication Date:
November 30, 2017
Filing Date:
May 24, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/047; F04C18/52; F04C29/04; F25B1/00; F25B41/04
Foreign References:
| JPH0436550A | 1992-02-06 | |||
| JPH05288410A | 1993-11-02 | |||
| JPH08313074A | 1996-11-29 | |||
| JP2015111047A | 2015-06-18 | |||
| JP2011075178A | 2011-04-14 |
Other References:
See also references of EP 3467400A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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