REFRIGERATION CYCLE, DRIVE METHOD FOR REFRIGERATION CYCLE, ACCUMULATOR USED IN REFRIGERATION CYCLE, AND, AIR CONDITIONING APPARATUS FOR VEHICLE HAVING INSTALLED REFRIGERATION CYCLE

WIPO Patent Application WO/2019/167822

A1

[Problem] To provide technology with which refrigerant stagnating in a location outside an accumulator can be avoided, said refrigerant having accumulated within the accumulator while a refrigeration cycle is stopped. [Solution] A refrigeration cycle (30) configured such that a compressor (6), radiators (4, 5) which cause the working fluid compressed by the compressor (6) to radiate heat, expansion devices (7, 9) which pressure-reduce and expand the working fluid after the same has been radiated by the radiators (4, 5), heat absorbers (5, 3) which cause the working fluid that has been pressure-reduced and expanded by the expansion devices (7, 9) to absorb heat, and an accumulator (10) which collects the working fluid, are at least connected by piping, and in said refrigeration cycle (30), a first control valve (15), which can control the outflow amount of the working fluid that flows out from the accumulator (10), is provided to an outflow side (10b) of the accumulator (10), and a second control valve (16), which can prevent backflow from the accumulator (10), is provided to an inflow side (10a) of the accumulator (10). An on-off valve is used as the first control valve (15), and a check valve or an on-off valve may be used as the second control valve (16).

ISHINO HIROYUKI (JP)

PCT/JP2019/006709

September 06, 2019

February 22, 2019

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VALEO JAPAN CO LTD (JP)

F25B41/04; B60H1/22; B60H1/32; F25B1/00

WO2016051493A1	2016-04-07
WO2018158886A1	2018-09-07

JPH07248164A	1995-09-26
JP2014077552A	2014-05-01
JP2016205629A	2016-12-08
JPS5855249U	1983-04-14

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