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:
Oct. 02, 2001
Filed:
Apr. 20, 2000
Peter Fandrey, Glückstadt, DE;
Sterling Fluid Systems (Germany) GmbH, Itzehoe, DE;
Abstract
The invention relates to a side channel centrifugal pump with a housing forming a side channel (,). The housing surface adjacent to the side channel forms a front face (,) adjoining the impeller. The transition edge (,) between the side channel (,) and the front face (,) is rounded in the areas where it deviates from the circumferential direction. In the front plane, the blades (,) of the impeller have a predetermined web width in the circumferential direction. According to the invention, the radius (,) of the transition edge (,) is greater than 0.25 (sec/m) times the product of web width×blade speed where the impeller blades (,) exit from the front face (,) and overlap into the area of the side channel (,). This reduces cavitation tilting and noise.