REFRIGERANT CYCLE SYSTEM - DAIKIN IND LTD

Title:

REFRIGERANT CYCLE SYSTEM

Document Type and Number:

WIPO Patent Application WO/2020/250986

Kind Code:

A1

Abstract:

The present invention sets a refrigerant to be in a superheated state without degrading the performance of a cascade heat exchanger. A refrigerant cycle system (100, 200) is provided with a first refrigerant circuit (1, 201), a second refrigerant circuit (2, 202), and a first cascade heat exchanger (21, 221). The first cascade heat exchanger (21, 221) causes heat exchange between a first refrigerant flowing in the first refrigerant circuit (1, 201) and a second refrigerant flowing in the second refrigerant circuit (2, 202). The refrigerant cycle system (100, 200) has switching mechanisms (13, 25, 213, 225). The switching mechanisms (13, 25, 213, 225) each switch at least one of refrigerant flow paths of the first refrigerant circuit (1, 201) and the second refrigerant circuit (2, 202). The first cascade heat exchanger (21, 221) has a first main heat exchange part (21a, 221a) and a first subsidiary heat exchange part (21b, 221b). The first subsidiary heat exchange part (21b, 221b) is for causing the first refrigerant having passed through the first main heat exchange part (21a, 221a) to be in a superheated state.

Inventors:

KUMAKURA EIJI
YAMADA TAKURO
YOSHIMI ATSUSHI
IWATA IKUHIRO
MINAMIDA TOMOATSU

Application Number:

PCT/JP2020/023068

Publication Date:

December 17, 2020

Filing Date:

June 11, 2020

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)

International Classes:

F25B5/04; F25B1/00; F25B7/00; F25B13/00

Domestic Patent References:

WO2018235832A1

2018-12-27

Foreign References:

JP2013130357A	2013-07-04
JPH07234027A	1995-09-05
JP2013148330A	2013-08-01
JPH07243711A	1995-09-19
JPH03271659A	1991-12-03
JP2017161182A	2017-09-14
JP2000193339A	2000-07-14

Other References: