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:
Dec. 14, 2010
Filed:
Mar. 11, 2009
Niels Christian Weihrauch, Flensburg, DE;
Niels Christian Weihrauch, Flensburg, DE;
Danfoss Compressors GmbH, Flensburg, DE;
Abstract
The invention concerns a rotor of an electrical machine, particularly a driving motor for a hermetically enclosed refrigerant compressor with a body () comprising a magnetically conductive material, the rotor having a plurality of axially extending slots (), which are filled with an electrically conductive material. It is endeavored to achieve a good performance. For this purpose, it is ensured that an extension section () of a first group of slots () extends further radially inwards than a second group of slots (), and that between two slots () of the first group at least one slot () of the second group must be arranged, a first flow cross-section being formed between neighboring extension sections () at the circumferentially shortest distance (a) between the two extension sections (), a second flow cross-section being formed between neighboring slots () at the circumferentially shortest distance (b) between the slots (), the first flow cross-section corresponding to the sum of the second flow cross-sections between the two slots (5) of the first group.