Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/245958
Kind Code:
A1
Abstract:
A refrigeration cycle device is provided with: a compressor; an air heat exchanger; a utilization heat exchanger; a first refrigerant channel connecting the utilization heat exchanger to a discharge channel; a second refrigerant channel connecting the air heat exchanger to an intake channel; a receiver for storing a liquid refrigerant; a first expansion valve; a second expansion valve; a third refrigerant channel connecting the utilization heat exchanger to the first expansion valve; a fourth refrigerant channel connecting the first expansion valve to a receiver; a fifth refrigerant channel connecting the receiver to the second expansion valve; a sixth refrigerant channel connecting the second expansion valve to the air heat exchanger; a hot gas bypass channel connecting the discharge channel to the sixth refrigerant channel; a hot gas bypass valve; an internal heat exchanger for exchanging heat between the liquid refrigerant in the receiver and the refrigerant passing through the intake channel, or between the refrigerant passing through the fourth refrigerant channel and the refrigerant passing through the intake channel; a liquid bypass channel having an inlet part connected to the lower part of the receiver, the fourth refrigerant channel, or the fifth refrigerant channel, and an outlet part connected to the intake channel at a position upstream of the internal heat exchanger; and a liquid bypass valve.
Inventors:
TAKAYAMA KEISUKE (JP)
UCHINO SHINICHI (JP)
UCHINO SHINICHI (JP)
Application Number:
PCT/JP2020/038476
Publication Date:
December 09, 2021
Filing Date:
October 12, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B47/02
Domestic Patent References:
| WO2017085812A1 | 2017-05-26 | |||
| WO2009001535A1 | 2008-12-31 |
Foreign References:
| JP2002098451A | 2002-04-05 | |||
| JP2010164257A | 2010-07-29 | |||
| JP2018087676A | 2018-06-07 | |||
| JP2019015434A | 2019-01-31 |
Other References:
See also references of EP 4160108A4
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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