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:
Oct. 01, 1991
Filed:
Sep. 13, 1990
Ian M Shapiro-Baruch, Syracuse, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A method and apparatus for defrosting the outside heat exchanger of a reversible vapor compression refrigeration (heat pump) system. The method and apparatus are particularly suited for use with smaller systems that employ a single fan motor to drive both the inside and outside heat exchanger fans. A heat storage apparatus is mounted in heat exchange relationship with the refrigerant piping between the system flow reversing valve and the inside heat exchanger. During operation in the heating mode, heat from the refrigerant is transferred to and stored in the heat storage apparatus. During operation in the defrosting mode, the refrigerant flow in the system is aligned as in the cooling mode but both fans are shut off. Heat stored in the heat storage apparatus is transferred to and used for defrosting the outside heat exchanger. The apparatus has little or no effect on system operation in the cooling mode.