Ebm-papst St. Georgen Gmbh & Co Kg

Andreas Kuhlmey

Andreas Kienzler

Volker Ehlers

Gerhard Kuhnert

Jochen Wernet

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).

Centrifugal blower having an integrated cooling function

A device for ventilating a vehicle seat having a cushion () which is resilient with respect to user contact and which is constructed to form a seat and/or back contact face () and which has an air flow channel () which forms an air outlet () in the direction toward the seat or back contact face, an air-permeable covering unit () which is formed in order to at least partially cover the air outlet and which is preferably constructed so as to be rigid and/or grid-like, and a ventilator rotor () which is associated with the air flow channel and which is driven in an electro-motive manner and a ventilator unit () which has a ventilator housing () which at least partially radially surrounds the ventilator rotor, characterized in that the covering unit and the ventilator unit are fixed on or in the cushion with spacing from each other along the air flow channel and without direct connection of portions of the covering unit and the ventilator unit, and the ventilator housing has at the peripheral and/or outer side first fixing means () which are constructed in order to secure the ventilator unit in the air flow channel by engaging in and/or in order to cooperate with second fixing means () which are provided on or in an inner wall portion of the air flow channel.

Growing community of inventors

Schramberg, Germany

Andreas Kuhlmey