REFRIGERATOR

WIPO Patent Application WO/2022/022087

A1

Embodiments of the present application provide a refrigerator, comprising: a vacuum system, provided in a door body, one end of the vacuum system being provided in a protective shell, the other end of the vacuum system being connected to a vacuum fresh-keeping box, and air in the vacuum fresh-keeping box being extracted by the vacuum system; and a pressure relief valve, provided in the protective shell, the pressure relief valve being fixedly connected to the vacuum system, and pressure in the vacuum system being relieved by the pressure relief valve. The pressure relief valve is additionally provided, one end of the pressure relief valve is connected to an air extraction pipe, and when the vacuum fresh-keeping box needs to be opened, the pressure relief valve is used to carry out pressure relief to reduce pressure in the air extraction pipe, so as to facilitate opening the vacuum fresh-keeping box. A three-way valve is additionally provided, the three-way valve is provided at the joint of the air extraction pipe and a vacuum valve, connectivity between the pressure relief valve and the vacuum system is improved by means of the three-way valve, and moreover, air tightness is enhanced.

YANG CHUN (CN)
ZHAO ZHENLEI (CN)
BAO YUFENG (CN)
ZHANG JIAN (CN)
ZHAO XING (CN)
WANG HAIYAN (CN)
LIU TIEWEI (CN)
WANG JIXIANG (CN)

PCT/CN2021/099156

February 03, 2022

June 09, 2021

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HISENSE SHANDONG REFRIGERATOR CO LTD (CN)

F25D11/00; F25D25/00

KR20060041509A	2006-05-12
CN111380278A	2020-07-07
CN210532794U	2020-05-15
CN101774451A	2010-07-14
CN203116405U	2013-08-07
EP3450893A1	2019-03-06

TDIP & PARTNERS (CN)

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