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:
Mar. 06, 2018
Filed:
Mar. 09, 2015
Applicants:
Markus Hoff, Künzelsau, DE;
Katrin Bohl, Künzelsau, DE;
Reinhard Strohmeier, Rot Am See, DE;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/02 (2006.01); F04D 29/68 (2006.01); F04D 29/30 (2006.01); F04D 29/28 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F01D 5/027 (2013.01); F04D 29/282 (2013.01); F04D 29/30 (2013.01); F04D 29/662 (2013.01); F04D 29/681 (2013.01); F05D 2240/306 (2013.01);
Abstract
The invention relates to a drum rotor wheel for a fan having bulges to accommodate balancing weights. A drum rotor wheel according to the invention has several blades that are curved forward. The blades have a leading edge and a trailing edge. A top disc and a bottom disc are provided on the drum rotor wheel. At least one blade of the drum rotor wheel has a bulge on its leading edge. This bulge minimizes the area of flow separation, as a result of which the magnitude of the flow separation is likewise minimized. In other words, due to the bulge, the efficiency of the drum rotor wheel is increased.