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:
Apr. 24, 2018
Filed:
Aug. 12, 2015
Emerson Climate Technologies, Inc., Sidney, OH (US);
Vijay Bahel, Sidney, OH (US);
Kurt James Knapke, St. Marys, OH (US);
Emerson Climate Technologies, Inc., Sidney, OH (US);
Abstract
A system includes a compressor driven by a motor. A condenser receives working fluid from the compressor. An evaporator is in fluid communication with the condenser and the compressor. A first sensor produces a first signal indicative of one of current and power drawn by the motor. A second sensor produces a second signal indicative of a discharge line temperature. A processing circuitry processes the first signal and the second signal to determine a freeze time. The processing circuitry processes the freeze time, the current signal, and the discharge line temperature signal to determine a working fluid charge level.