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:
Dec. 02, 2008
Filed:
Sep. 09, 2005
Guangming Chen, Hangzhou, CN;
Zhikal Guo, Hangzhou, CN;
Xinzheng Guo, Hangzhou, CN;
Yongmei Xuan, Hangzhou, CN;
Guangming Chen, Hangzhou, CN;
Zhikal Guo, Hangzhou, CN;
Xinzheng Guo, Hangzhou, CN;
Yongmei Xuan, Hangzhou, CN;
Zhejiang Lantian Environmental Protection Hi-Tech Co. Ltd., Hangzhou, Zhejiang, P.R., CN;
Abstract
The present invention discloses ternary mixtures of fluoroethane (HFC-161), pentafluoroethane (HFC-125) and difluoromethane (HFC-32) used as environmentally friendly alternative refrigerants to HCFC-22. The mass ratios of the mixture of each component are 5-60%, 25-50% and 5-50%, respectively. Its ODP is zero, with no depletion potential to the ozone layer. Its GWP is smaller than those of HCFC-22, R407C and R410A. Its working pressure and pressure ratio are close to those of HCFC-22. With few changes to system components, it can be used as a potential substitute refrigerant for HCFC-22.