AIR CONDITIONING SYSTEM FOR VEHICLE AND METHOD FOR CONTROLLING SAME

WIPO Patent Application WO/2018/016902

A1

The present invention relates to an air conditioning system for a vehicle and a method for controlling the same and, more specifically, to an air conditioning system for a vehicle and a method for controlling the same in which an opening/closing valve and an expansion valve are installed on a branch line connecting a first air conditioning unit and a second air conditioning unit, the opening/closing valve is always open so as to always supply a refrigerant to the second air conditioning unit during a cooling mode, and the opening/closing valve is always closed so as to always block the refrigerant supply to the second air conditioning unit during a heating mode, such that the refrigerant flows into the branch line of the second air conditioning unit even during a single cooling mode, thereby solving the problem wherein the pressure of a compressor increases, oil is forcibly circulated through a notch of the expansion valve, thereby solving the problem wherein the oil circulation rate decreases, and the refrigerant supply to the second air conditioning unit is blocked during a dual heating mode, thereby solving the problem wherein the heating performance of an electric heating type heater decreases when the second air conditioning unit is operated.

KIM HYEON GYU (KR)
KIM DOO HOON (KR)
KIM CHUL HEE (KR)
RYU JAE CHUN (KR)
LEE SUNG JE (KR)
HAN YOUNG HUM (KR)
HAN JOONG MAN (KR)

PCT/KR2017/007861

January 25, 2018

July 21, 2017

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HANON SYSTEMS (KR)

B60H1/00; B60H1/22; F25B39/02; F25B41/00; F25B41/04; F25B41/06; F25B49/00

JP2004001674A	2004-01-08
JP3700286B2	2005-09-28
JP2004058958A	2004-02-26
JPH1035263A	1998-02-10
JP3581128B2	2004-10-27

PARK, Won Yong (KR)

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