Patent ID: 8742703

Claim:
A blower apparatus comprising: a housing; a blower wheel arranged in said housing and configured to generate a blower air flow; an outlet for said blower air flow; a blower tube which connects to said outlet; said blower tube being configured for guiding said blower air flow; an electric drive motor arranged in said housing and configured to drive said blower wheel; a voltage source; a control unit configured to control the rotational speed (n) of said drive motor; said drive motor being connected to said voltage source via said control unit; said control unit being configured to support a deceleration of said drive motor via a braking current (I) in order to reduce said blower air flow; and, said control unit being configured to set said braking current (I) in such a manner that on the basis of a braking time (B), a braking procedure of an operating rotational speed (n) to less than 10% of the operating rotational speed follows a rotational speed course of said drive motor which follows a characteristic line as a function of time (t) which has an essentially constant negative slope over more than 60% of said braking time (B).