AIR-CONDITIONING DEVICE AND METHOD FOR CONTROLLING AIR-CONDITIONING DEVICE

WIPO Patent Application WO/2024/024635

A1

Provided is a vehicle air-conditioning device (100) comprising: a circulation channel that guides a refrigerant that has passed through a heating unit (20) towards an accumulator (30); a bypass channel that guides the refrigerant towards the accumulator (30) without passing through the heating unit (20); and a control unit (90) that controls the opening amount of a throttle valve (40) provided on the circulation channel and a throttle valve (50) provided on the bypass channel, wherein the control unit (90) controls the opening amount of the throttle valve (40) and the throttle valve (50) so that the proportion of gas refrigerant in inflow refrigerant flowing into the accumulator (30) is greater than the proportion of gas refrigerant in outflow refrigerant flowing out of the accumulator (30) when the pressure of the refrigerant drawn in by a compressor (10) is less than a predetermined pressure, and that the proportion of liquid refrigerant in the inflow refrigerant is greater than the proportion of liquid refrigerant in the outflow refrigerant when the pressure of the refrigerant drawn in by the compressor (10) is greater than the predetermined pressure.

ADACHI TOMOYASU (JP)
NAKAGAWA NOBUYA (JP)
KOBAYASHI TAKAYUKI (JP)
YAMAMOTO HIROYUKI (JP)
NOYAMA HIDETO (JP)
SAITO KATSUHIRO (JP)
MORISHITA MASATOSHI (JP)

PCT/JP2023/026629

February 01, 2024

July 20, 2023

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MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)

F25B1/00; F25B43/02

JP2019104350A	2019-06-27
JPH0796739A	1995-04-11
CN110553415A	2019-12-10
JP2019051832A	2019-04-04
JP2003267039A	2003-09-25
JP2016049915A	2016-04-11

FUJITA, Takaharu (JP)

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