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:
May. 11, 2010
Filed:
Dec. 27, 2004
Robert J. Braun, Ii, Windsor, CT (US);
Pengju Kang, Hartford, CT (US);
Julio I. Concha, Rocky Hill, CT (US);
Sivakumar Gopalnarayanan, Simsbury, CT (US);
Timothy P. Galante, West Hartford, CT (US);
Dong Luo, South Windsor, CT (US);
Craig Kersten, Mooresville, IN (US);
Robert J. Braun, II, Windsor, CT (US);
Pengju Kang, Hartford, CT (US);
Julio I. Concha, Rocky Hill, CT (US);
Sivakumar Gopalnarayanan, Simsbury, CT (US);
Timothy P. Galante, West Hartford, CT (US);
Dong Luo, South Windsor, CT (US);
Craig Kersten, Mooresville, IN (US);
Carrier Corporation, Farmington, CT (US);
Abstract
A method and apparatus for determining the sufficiency of refrigerant charge in an air conditioning system by the use of only two temperature measurements. The temperature of the liquid refrigerant leaving the condenser coil is sensed and the temperature of the condenser coil itself is sensed and the difference between these two measurements is calculated to provide an indication of the adequacy of refrigerant charge in the system. This process is refined by steps taken to eliminate measurements during transient operations and by filtering signals to eliminate undesirable noise. A permitted threshold of deviation is calculated by using probability theory.