Side channel blower, in particular a secondary air blower for an internal combustion machine

US9297276B2 · kind B2 · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Berthold Herrmann · Heidenheim, DE
• Rainer Peters · Goch, DE

Key dates

• Filing date: Aug 31, 2011
• Grant date: Mar 29, 2016
• Expiry date: Jan 2, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D29/667
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A side channel blower includes a housing comprising a substantially tangential outlet. A housing cover comprises an axial inlet. At least one conveying duct is configured so that the axial inlet fluidly communicates with the outlet. An impeller is driven by a drive unit. The impeller is rotatably supported in the housing and comprises conveying blades which cooperate with the at least one conveying duct. An interruption region is arranged between the outlet and the axial inlet. The interruption region comprises a radially limiting wall and interrupts the at least one conveying duct in a circumferential direction. A first recess is arranged in the radially limiting wall of the interruption region downstream of the outlet. Further recesses are arranged in the interruption region before the axial inlet and after the outlet. A smallest distance between the further recesses is 0.5 to 3 times a distance between two conveying blades.