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. 21, 2019
Filed:
Aug. 10, 2015
Applicant:
Trane International Inc., Piscataway, NJ (US);
Inventors:
Assignee:
Trane International Inc., Piscataway, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25B 49/00 (2006.01);
U.S. Cl.
CPC ...
F25B 49/005 (2013.01); F25B 2500/08 (2013.01); F25B 2600/021 (2013.01); F25B 2700/2106 (2013.01); F25B 2700/21153 (2013.01); Y02B 30/741 (2013.01);
Abstract
A compressor heating system includes a compressor drive controller electrically coupled to an outdoor controller configured to selectively implement a pulse width modulation algorithm to deliver a pulsed direct current (DC) from the compressor drive controller to at least one stator winding of a motor of a variable speed compressor to provide heat to the compressor to prevent refrigerant migration to the compressor when the compressor remains idle with respect to operating in a cooling or heating mode.