Title:
TWO-STAGE REFRIGERATOR
Document Type and Number:
Japanese Patent JP2021011985
Kind Code:
A
Abstract:
To provide a two-stage refrigerator capable of suppressing an increase in pressure loss generated when a high-stage refrigerant is circulated in a route in which a low-stage refrigerant in a low-stage side cooling circuit is condensed by the high-stage refrigerant cooled by a heat exchanger in a high-stage side cooling circuit.SOLUTION: A two-stage refrigerator 100 includes: a first heat exchanger 4 evaporating a high-stage refrigerant expanded by a high-stage side expansion valve 33 and condensing a low-stage refrigerant caused to flow out from a low-stage side compressor 11; and a second heat exchanger 5 cooling the high-stage refrigerant caused to flow out from a high-stage side condenser 32 by using a low-stage refrigerant caused to flow out from a low-stage side evaporator 14. The high-stage side cooling circuit 3 includes a connection pipeline 34 directly connecting the high-stage side condenser 32 and the second heat exchanger 5 without interposing a valve.SELECTED DRAWING: Figure 1
Inventors:
MIYAKOSHI TOMOYA
TAKIGUCHI KOJI
RIKIOKA TOMOKAZU
TAKIGUCHI KOJI
RIKIOKA TOMOKAZU
Application Number:
JP2019126930A
Publication Date:
February 04, 2021
Filing Date:
July 08, 2019
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
F25B7/00; F25B6/04
Attorney, Agent or Firm:
Hirokazu Miyazono