Title:
REFRIGERATOR
Document Type and Number:
WIPO Patent Application WO/2022/000742
Kind Code:
A1
Abstract:
A refrigerator (1), comprising a box body (2), a box door (13) having a top portion provided with an accommodating portion (18) for installing a vacuum pump (3), a low-pressure storage unit and an air leakage prevention unit (40); the air leakage prevention unit (40) comprises a vertical column (61) formed on the accommodating portion (18), a first through-hole (62) penetrating the vertical column (61), and a floating column (57) installed in the first through-hole (62); the vertical column (61) is provided with a first end portion (61a) located in the accommodating portion (18) and an air outlet (62a) located at the first end portion (61a); the floating column (57) is provided with a second baffle (59) cooperating with the first end portion (61a) to open or close the air outlet (62a); the floating column (57) and the vertical column (61) together define an air extraction channel (70); a first shield cover (52) communicating the air extraction channel (70) with the vacuum pump (3) is sleeved outside the first end portion (61a); and the floating column (57) is able to reciprocate along the first through-hole (62) under the action of air pressure, so as to open or close the air outlet (62a).
Inventors:
ZHANG JIAN (CN)
LIU TIEWEI (CN)
YANG CHUN (CN)
LIU TIEWEI (CN)
YANG CHUN (CN)
Application Number:
PCT/CN2020/111140
Publication Date:
January 06, 2022
Filing Date:
August 25, 2020
Export Citation:
Assignee:
HISENSE SHANDONG REFRIGERATOR CO LTD (CN)
International Classes:
F25D11/02; F25D17/04; F25D23/02
Foreign References:
| CN1033505A | 1989-06-28 | |||
| CN206770161U | 2017-12-19 | |||
| CN103575017A | 2014-02-12 | |||
| CN210772963U | 2020-06-16 | |||
| CN101881543A | 2010-11-10 | |||
| JP2008292095A | 2008-12-04 | |||
| EP1619455B1 | 2014-04-30 | |||
| FR1377844A | 1964-11-06 | |||
| US5095717A | 1992-03-17 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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