Electric vacuum head

Abstract

An electric vacuum head for a vacuum cleaner has a housing, a cleaning device that can be driven by an electric motor disposed within the housing in a motor chamber, a vacuum mouth on the underside of the housing delimited by vacuum mouth edges, and a vacuum connector. The motor chamber has at least one air entry opening for entry of air to cool the electric motor, and at least one air exit opening. The air exit opening is disposed on the underside of the housing so that the cooling air that exits from the air exit opening during operation of the electric vacuum head enters into the vacuum mouth by way of at least one of the vacuum mouth edges.

1 . An electric vacuum head for a vacuum cleaner, comprising:
 a housing;   a cleaning device that is driven by an electric motor disposed within the housing in a motor chamber;   a vacuum mouth on an underside of the housing delimited by vacuum mouth edges; and   a vacuum connector connected to the housing;   wherein the motor chamber has at least one air entry opening for entry of air to cool the electric motor, and wherein at least one air exit opening is disposed on the underside of the housing so that cooling air that exits from the air exit opening during operation of the electric vacuum head enters into the vacuum mouth by way of at least one of the vacuum mouth edges.   
   
   
       2 . The electric vacuum head according to  claim 1 , wherein there are a plurality of air exit openings on the underside of the housing. 
   
   
       3 . The electric vacuum head according to  claim 1 , wherein the at least one air exit opening is disposed in a depression between ribs that run approximately perpendicular to the vacuum mouth edges. 
   
   
       4 . The electric vacuum head according to  claim 1 , wherein the cleaning device is configured as a cleaning roller disposed in a roller chamber. 
   
   
       5 . The electric vacuum head according to  claim 1 , wherein the air exit opening is disposed in an inflow region of one of the vacuum mouth edges. 
   
   
       6 . The electric vacuum head according to  claim 1 , further comprising a sealing lip or a brush strip on the underside of the housing, the air exit opening being disposed between the vacuum mouth and the sealing lip or the brush strip. 
   
   
       7 . The electric vacuum head according to  claim 1 , wherein the electric motor is designed for a maximal power consumption, under load, of more than 50 watts. 
   
   
       8 . The electric vacuum head according to  claim 1 , wherein a cross-section of at least one of the air entry opening and the air exit opening is adjustable. 
   
   
       9 . The electric vacuum head according to  claim 1 , wherein a bypass is disposed on the motor chamber, said bypass connecting the motor chamber with a channel or chamber through which vacuuming air flows, within the housing.