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:
Jul. 17, 2018
Filed:
Apr. 05, 2016
Illinois Tool Works Inc., Glenview, IL (US);
Ermanno Pinotti, Via Pizzo Recastello, IT;
Daniele Turetta, Via San Francesco, IT;
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A compressor for commercial refrigerators comprises an electric motor having a start winding () and a run winding (), in which the input terminals of the start winding () and the run winding () are connected together and to the line voltage (L), and an electronic start device to supply the start winding () during a starting period. The electronic start device comprises a run condenser () having a first terminal connected to the output terminal from the start winding () and a second terminal connected to the output terminal from the run winding (), and a start capacitor () having a first terminal connected to the output terminal of the start winding (). In the electronic start device there is also provided a solid state switch () which supplies the start winding () and is connected between the second terminal of the start capacitor () and the neutral terminal of the supply (N), and a control circuit () comprising a delay circuit () which controls switching of the solid state switch () closing it to start the motor and opening it at the end of the starting period once the motor has started.