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:
Mar. 02, 1999
Filed:
Sep. 26, 1997
Applicant:
Inventors:
Mark A Palasz, St. Charles, IL (US);
Gregg Jonsson, Batavia, IL (US);
Assignee:
Siemens Energy & Automation, Inc., Alpharetta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ;
U.S. Cl.
CPC ...
622281 ; 62126 ; 361 22 ;
Abstract
Problems in shutting down the compressor in a vapor compression air conditioner in response to high pressure, low pressure and frozen refrigerant conditions are eliminated in a protection circuit that includes a contactor coil to control the power supply to the compressor. The use of a semiconductor switching configuration in the protection circuit provides for disconnecting the power to the compressor under fault conditions and for ensuring that the power connection to the compressor remains disabled until the conditions which initially triggered the protection circuit are corrected.