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:
Jan. 03, 1995
Filed:
Oct. 05, 1993
Nancy M Otto, Clay, NY (US);
Warren R Clough, Cicero, NY (US);
Henry B Balduzzi, Liverpool, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
An improved vapor compression refrigeration system that has an indicator for detecting the presence of acid contamination in the refrigerant contained in the system. The indicator is permanently or semipermanently installed so that continuous monitoring of the refrigerant for acid is possible. The indicator is located in a portion of the system where the refrigerant is always in a gaseous state. In a preferred embodiment, the indicator is located in a bypass line between the suction and the discharge of the system compressor. The indicator preferably shows the presence of acid by a color change, visible from a point external to the indicator, in an indicator bed in the indicator. The color change may be either permanent or the indicator bed may return to its original color when the acid contamination is no longer present in the refrigerant.