Title:
MULTI-STAGE COMPRESSION REFRIGERATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/249565
Kind Code:
A1
Abstract:
Provided is a refrigeration apparatus capable of stably operating while improving the efficiency of a refrigeration cycle. The refrigeration apparatus is provided with a compression section including three or more stages of compression mechanisms, a first heat exchanger, a pressure reduction section, a second heat exchanger, a plurality of intermediate-pressure injection flow paths that are provided between a high-pressure pressure reduction mechanism and a low-pressure pressure reduction mechanism and supply a refrigerant at an intermediate pressure, which is between a high pressure and a low pressure, between the compression mechanisms, a gas-liquid separator that supplies a gas-phase refrigerant to a high-pressure intermediate-pressure injection flow path on a relatively high-pressure side among the plurality of intermediate-pressure injection flow paths, and an internal heat exchanger that supplies a refrigerant that has absorbed heat from a liquid refrigerant, which is a liquid-phase refrigerant supplied from the gas-liquid separator, by heat exchange between the liquid refrigerant and a two-phase refrigerant obtained by reducing pressure of a part of the liquid refrigerant to the intermediate-pressure injection flow path on a low-pressure side relative to the high-pressure intermediate-pressure injection flow path.
Inventors:
KURODA NAOKI (JP)
ENYA ATSUSHI (JP)
YAMADA MIKI (JP)
ISHIDA TOSHIYUKI (JP)
OKADA YUJI (JP)
SASAYA YUGO (JP)
MATSUMOTO KOHEI (JP)
ARIMOTO RYOHEI (JP)
SATO SHINGO (JP)
ENYA ATSUSHI (JP)
YAMADA MIKI (JP)
ISHIDA TOSHIYUKI (JP)
OKADA YUJI (JP)
SASAYA YUGO (JP)
MATSUMOTO KOHEI (JP)
ARIMOTO RYOHEI (JP)
SATO SHINGO (JP)
Application Number:
PCT/JP2022/004822
Publication Date:
December 01, 2022
Filing Date:
February 08, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F25B43/00; F25B1/00; F25B1/10
Domestic Patent References:
| WO2007046332A1 | 2007-04-26 |
Foreign References:
| US20110113804A1 | 2011-05-19 | |||
| US20130055754A1 | 2013-03-07 | |||
| JP2013024436A | 2013-02-04 | |||
| JP2012154616A | 2012-08-16 | |||
| JP2017044420A | 2017-03-02 |
Attorney, Agent or Firm:
OBA, Mitsuru et al. (JP)
Download PDF:
Previous Patent: INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD
Next Patent: MULTI-STAGE COMPRESSION REFRIGERATION DEVICE
Next Patent: MULTI-STAGE COMPRESSION REFRIGERATION DEVICE