Ventilator

US9103352B2 · kind B2 · utility

Assignee

• Ziehl-Abegg AG · DE

Inventors

• Omar Sadi · Schwäbisch Hall, DE
• Andreas Gross · Solingen, DE
• Lothar Ernemann · Heilbronn, DE
• Frieder Lörcher · Braunsbach, DE

Key dates

• Filing date: Aug 12, 2011
• Grant date: Aug 11, 2015
• Expiry date: Feb 12, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2300/603
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A ventilator for use in air-conditioning and refrigeration technology has a housing of plastic material in a one-part configuration having integrally formed therein an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor. A drive motor is arranged in the housing. An impeller wheel is rotatably supported about a central axis in the housing and driven by the drive motor. A protective screen is connected to the housing. A motor support is connected by the outlet guide vanes to the housing. The impeller wheel has vanes with radially outwardly positioned vane ends, wherein the vane ends are embodied as flow elements (winglets). The flow elements are spaced at a minimal spacing relative to a sidewall of the housing. The drive motor is an external rotor motor that is embodied either as an alternating current asynchronous motor (AC) or an electronically commutated direct current motor (EC).