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.:
Date of Patent:
Aug. 03, 2021
Filed:
Dec. 01, 2017
Applicant:
Qingdao Haier Joint Stock Co., Ltd., Qingdao, CN;
Inventors:
Assignee:
QINGDAO HAIER JOINT STOCK CO., LTD., Qingdao, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D 17/04 (2006.01); B01D 53/22 (2006.01); C01B 13/02 (2006.01); F25D 17/06 (2006.01); F25D 23/06 (2006.01); F25D 25/02 (2006.01); F25D 29/00 (2006.01);
U.S. Cl.
CPC ...
F25D 17/045 (2013.01); B01D 53/228 (2013.01); C01B 13/0251 (2013.01); F25D 17/065 (2013.01); F25D 23/066 (2013.01); F25D 25/025 (2013.01); F25D 29/00 (2013.01); F25D 2317/041 (2013.01); F25D 2700/12 (2013.01);
Abstract
The present invention provides a refrigeration and freezing device, including a case body, a door body, an oxygen-enrichment membrane assembly, an air pump, and a refrigeration system. For the refrigeration and freezing device, temperature within an appropriate storage range and a nitrogen-rich and oxygen-deficient atmosphere cooperate, thereby effectively extending the shelf life of foods.