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:
Sep. 11, 1990
Filed:
Jan. 13, 1989
Richard J Hoppe, Rockford, IL (US);
Mark W Metzler, Davis, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
Plate fin heat exchangers (11,12 or 34,35,36) for transformers (10) and inductors (30) made of laminated iron cores (16 and 44) and insulated wire coils (13,14,15 or 45, 46, 47, 48) placed around the legs of the cores (16 and 44) is provided in the form of a plate fin between the coils of wire. The wire coils (13,14,15 or 45,46,47,48) and respective heat exchangers (11,12 or 34,35,36) are sandwiched together with the leg of the iron core (16 or 44) passing through the sandwich. The heat generated in the coils is in direct contact with the surface of the heat exchangers (11,12 or 34,35,36). A narrow air gap (28 or 49) is incorporated in each of the plate fin heat exchangers (11,12 or 34,35,36) at the core leg of each coil (13,14,15 or 45,46,47,48) to reduce the path eddy currents can travel and thereby reduce eddy current losses which reduce the power of the transformer (10) or inductor (30).