COOLING APPARATUS AND CONTROL METHOD FOR COOLING APPARATUS

WIPO Patent Application WO/2023/170874

A1

The purpose of this invention is to ensure gas-liquid separation in a cooling apparatus.　A cooling apparatus according to the present invention comprises a cooling cycle comprising an evaporator (1) that transfers heat to be cooled to a coolant, a compressor (2) that compresses the coolant to which heat was transferred by the evaporator (1), a condenser (3) that releases heat from the coolant compressed by the compressor (2), and an expansion unit (4) that expands the coolant from which heat was released by the condenser (3), in which the coolant expanded in the expansion unit (4) is circulated to the evaporator (1), said cooling apparatus further comprising a first gas-liquid separation tank (5) that separates the coolant condensed in the condenser (3) into a gas phase and a liquid phase in the flow path between the condenser (3) and the expansion unit (4), a second gas-liquid separation tank (6) that separates the coolant that has traversed the expansion unit (4) into a gas phase and a liquid phase in the flow path between the expansion unit (4) and the evaporator (1), and a control unit (7) that controls the liquid level in the second gas-liquid separation tank (6) to a prescribed height.

JP7274471	Heat transfer composition, method and system
JPH04295534	AIR-CONDITIONER
JPS594970	[Title of the device] A frozen cycle

CHIBA MASAKI (JP)
MIYAMOTO YOSHINORI (JP)
OHTSUKA TAKASHI (JP)
TODOROKI KOICHI (JP)
HACHIYA MAHIRO (JP)

PCT/JP2022/010634

September 14, 2023

March 10, 2022

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NEC CORP (JP)

F25B1/00; F25B43/00

JP2000283607A	2000-10-13
JP2019211182A	2019-12-12
JP2012193897A	2012-10-11
JP2006275435A	2006-10-12
JPH1194401A	1999-04-09
JP2008045837A	2008-02-28

TANAI Sumio et al. (JP)

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