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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10890369 B1

PDFFull Text
Date of Patent:
Jan. 12, 2021

Filed:

Feb. 23, 2017

Refrigerating and freezing device

Applicant:

Qingdao Haier Joint Stock Co., Ltd., Qingdao, CN;

Inventors:

Haoquan Liu, Qingdao, CN;

Bo Jiang, Qingdao, CN;

Liyan Wang, Qingdao, CN;

Ruowu Xin, Qingdao, CN;

Assignee:

QINGDAO HAIER JOINT STOCK CO., LTD., Qingdao, CN;

Attorney:

Cheng-Ju Chiang

Primary Examiner:

Frank M Lawrence, Jr

Int. Cl.
CPC ...
F25D 21/12 (2006.01); C01B 21/04 (2006.01); F25D 17/04 (2006.01); F25D 23/12 (2006.01); B01D 53/047 (2006.01); B01D 53/053 (2006.01);
U.S. Cl.
CPC ...
F25D 17/042 (2013.01); B01D 53/047 (2013.01); B01D 53/053 (2013.01); C01B 21/0444 (2013.01); C01B 21/0461 (2013.01); F25D 17/045 (2013.01); F25D 23/126 (2013.01); B01D 2253/102 (2013.01); B01D 2253/116 (2013.01); B01D 2256/10 (2013.01); B01D 2257/104 (2013.01); B01D 2258/06 (2013.01); B01D 2259/402 (2013.01); B01D 2259/40035 (2013.01); C01B 2210/0017 (2013.01); C01B 2210/0045 (2013.01); F25D 2317/061 (2013.01);
Abstract

The present invention provides a refrigerating and freezing device. A first sealed space and a second sealed space are disposed in a storage space inside the refrigerating and freezing device. The refrigerating and freezing device is further provided with a nitrogen generation device, which comprises an adsorption device and an air compressor that supplies compressed air for the adsorption device. The adsorption device utilizes the compressed air to prepare nitrogen that is provided for the first sealed space and an oxygen-enriched gas that is provided for the second sealed space. The freshness preservation capability of the first sealed space is improved. The bioactivity of food in the second sealed space is guaranteed.

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