Suction device having a cooling duct and method for operat-ing the suction device

Abstract

A suction device having a duct for supplying cooling air for at least one component of the suction device, wherein the at least one component of the suction device is arranged within a housing of the suction device. The duct is designed in such a way that cooling air is drawn in from an interior space of the housing of the suction device and is led past the at least one component of the suction device. It is thereby possible to provide a cooling duct that has a particularly short loss distance, over which the cooling air can be led past the at least one component of the suction device with a minimum loss of cooling capacity. In this way, particularly effective cooling of the at least one component of the suction device can be brought about. A method for operating such a suction device is also provided, by which optimum cooling of the at least one component of the suction device can be made possible.

What is claimed is: 
     
         1 . A suction device comprising:
 a housing;   at least one component; and   a duct for supplying cooling air for the at least one component the at least one component being arranged within the housing;   the duct being designed in such a way that cooling air is drawn in from an interior space of the housing and is led past the at least one component.   
     
     
         2 . The suction device as recited in  claim 1  wherein the at least one component is an electronics unit. 
     
     
         3 . The suction device as recited in  claim 2  wherein the electronics unit is arranged at an angle of inclination α within the duct, wherein the angle of inclination α is in a range between 0 and 90°. 
     
     
         4 . The suction device as recited in  claim 1  wherein the at least one component is arranged at an angle of inclination α within the duct, wherein the angle of inclination α is in a range between 0 and 90°. 
     
     
         5 . The suction device as recited in  claim 1  wherein the at least one component is arranged in an inlet region of the duct. 
     
     
         6 . The suction device as recited in  claim 2  wherein the electronics unit is arranged in an inlet region of the duct. 
     
     
         7 . The suction device as recited in  claim 2  wherein the electronics unit has cooling fins. 
     
     
         8 . The suction device as recited in  claim 1  further comprising at least one line for transmitting electrical energy, data and/or control commands. 
     
     
         9 . The suction device as recited in  claim 8  wherein the at least one line for transmitting electrical energy, data and/or control commands is arranged between an electronics unit and a suction motor of the suction device. 
     
     
         10 . The suction device as recited in  claim 1  wherein the duct is formed by a first side region and a second side region, wherein at least one of the first and second side regions has a receiver for receiving or holding the at least one component. 
     
     
         11 . The suction device as recited in  claim 2  wherein the duct is formed by a first side region and a second side region, wherein at least one of the first and second side regions has a receiver for receiving or holding the electronics unit. 
     
     
         12 . The suction device as recited in  claim 1  wherein the duct is in sealing engagement with a seal of a suction motor of the suction device. 
     
     
         13 . The suction device as recited in  claim 1  wherein an inlet region of the duct is designed so as to slope by an angle of inclination α. 
     
     
         14 . The suction device as recited in  claim 1  wherein a central portion of the duct is formed parallel to an imaginary vertical axis. 
     
     
         15 . A method for operating a suction device as recited in  claim 1  comprising:
 drawing cooling air in from the interior space of the housing; and 
 leading the cooling past the at least one component. 
 
     
     
         16 . The method as recited in  claim 15  wherein the at least one component is arranged at an angle of inclination α within the duct, wherein the angle of inclination α is in a range between 0 and 90°, such that the cooling air is led past the at least one component with a minimum loss of cooling capacity. 
     
     
         17 . The method as recited in  claim 15  wherein the at least one component of the suction device is arranged in an inlet region of the duct, such that the cooling air is led past the at least one component with a minimum loss of cooling capacity. 
     
     
         18 . The method as recited in  claim 15  wherein the at least one component is arranged between an electronics unit and a suction motor of the suction device such that the cooling air is led past the at least one component of the suction device with a minimum loss of cooling capacity.