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:
May. 24, 2022
Filed:
Oct. 30, 2019
Ebm-papst St. Georgen Gmbh & Co. KG, St. Georgen, DE;
Volker Ehlers, St. Georgen, DE;
Andreas Kuhlmey, Schramberg, DE;
ebm-papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
A radial fan () or centrifugal blower is provided having a fan housing () with a spiral pressure chamber (D) and a rotor assembly () comprising an internally axially open bearing tube (), in which a shaft () carrying a fan wheel () is mounted with a rotor () of a canned motor. An air-guiding channel (L) between a first pressure-chamber region () and a second pressure-chamber region () of the spiral pressure chamber (D) is formed between the bearing tube () and the wall (W) of the canned motor, so that an air flow flows through the air-guiding channel (L) from one pressure-chamber region () to the other and in the process dissipates heat from the bearing tube () into the pressure chamber (D).