Suction apparatus and separator unit for a suction apparatus with an obliquely positioned flow diversion

Abstract

A separator unit includes a collecting container enclosed by a housing wall, extending along a longitudinal axis, and having an inlet opening disposed on the housing wall for a suction airflow. The separator unit is configured in such a manner that a suction airflow that is passing through the inlet opening into the collecting container has a flow direction running in the circumferential direction with regard to the longitudinal axis. The separator unit includes a diversion element which is positioned downstream along the flow direction and has a surface which acts on the suction airflow. The normal vector of an obliquely positioned section of the surface of the diversion element runs in an oblique manner with respect to the longitudinal axis. A suction apparatus having the separator unit is also provided.

1 . A separator unit for a suction apparatus, the separator unit comprising:
 a housing wall enclosing a collecting container;   said collecting container extending along a longitudinal axis;   said collecting container having an inlet opening disposed at said housing wall for a suction airflow;   the separator unit configured to cause a suction airflow passing through said inlet opening into said collecting container to have a flow direction running in a circumferential direction relative to the longitudinal axis;   a diversion element positioned downstream of said inlet opening along the flow direction, said diversion element having a surface acting on the suction airflow; and   said surface of said diversion element including an obliquely positioned section having a normal vector able to run in an oblique manner relative to the longitudinal axis.   
     
     
         2 . The separator unit according to  claim 1 , wherein said obliquely positioned section of said surface of said diversion element is disposed flush with said inlet opening in a radial direction relative to the longitudinal axis. 
     
     
         3 . The separator unit according to  claim 2 , wherein said surface of said diversion element is configured to increasingly or smoothly orient the normal vector of said surface of said diversion element with an increasing spacing along the flow direction of the suction airflow, parallel to the longitudinal axis. 
     
     
         4 . The separator unit according to  claim 3 , wherein the normal vector of said surface of said diversion element is oriented parallel to the longitudinal axis above a predefined spacing. 
     
     
         5 . The separator unit according to  claim 1 , wherein the normal vector of said obliquely positioned section of said surface of said diversion element has a directional component facing in a radial direction out of said collecting container. 
     
     
         6 . The separator unit according to  claim 1 , wherein the normal vector of said obliquely positioned section of said surface of said diversion element is disposed at an angle relative to the longitudinal axis of between 10° and 45°. 
     
     
         7 . The separator unit according to  claim 6 , wherein the angle of the normal vector relative to the longitudinal axis is between 15° and 25°. 
     
     
         8 . The separator unit according to  claim 1 , wherein:
 said housing wall of said collecting container has an inner side;   said housing wall runs around the longitudinal axis in a cylindrical shape or in a shape of a circular cylinder; and   said diversion element runs in an annular manner along said inner side of said housing wall around the longitudinal axis.   
     
     
         9 . The separator unit according to  claim 8 , wherein:
 said annular diversion element has an outer edge facing said housing wall and an inner edge remote from said housing wall;   said surface of said diversion element is disposed at a first angular position relative to the longitudinal axis along a radial direction relative to the longitudinal axis and flush with said inlet opening;   said inner edge has, at said first angular position, an inner edge spacing with a first spacing value from a reference plane disposed perpendicular to the longitudinal axis;   said outer edge has, at said first angular position, an outer edge spacing with a second spacing value from the reference plane; and   said first spacing value is smaller than said second spacing value.   
     
     
         10 . The separator unit according to  claim 9 , wherein said separator unit has a filter unit, and said inner edge of said annular diversion element faces said filter unit. 
     
     
         11 . The separator unit according to  claim 9 , wherein:
 said inner edge spacing and said outer edge spacing are harmonized or harmonized smoothly with an increasing angular spacing causing, after a second angular position, said inner edge spacing and said outer-edge spacing to have an equal spacing value or said first spacing value; and   said second angular position is spaced between 70° and 110° from said first angular position.   
     
     
         12 . The separator unit according to  claim 11 , wherein said second angular position is spaced approximately by 90° from said first angular position. 
     
     
         13 . The separator unit according to  claim 11 , wherein:
 after said second angular position, said inner edge spacing and said outer edge spacing have an identical spacing value increasing with said increasing angular spacing from said second angular position, causing said inner edge spacing and said outer edge spacing to have a third spacing value at a third angular position; and   said third angular position is spaced between 350° and 360° from said first angular position.   
     
     
         14 . The separator unit according to  claim 13 , wherein said third angular position is spaced approximately between 355° and 359° from said first angular position. 
     
     
         15 . The separator unit according to  claim 13 , wherein:
 said collecting container extends along the longitudinal axis from a first end side to an oppositely-lying second end side;   said collecting container has a total length from said first end side to said second end side;   said third spacing value is higher than said first spacing value by 5% or more of said total length; and   said second spacing value is higher than said first spacing value.   
     
     
         16 . The separator unit according to  claim 15 , wherein said third spacing value is higher than said first spacing value by between 5% and 20% of said total length, and said second spacing value is higher than said first spacing value by between 0.5% and 2% of said total length. 
     
     
         17 . The separator unit according to  claim 13 , wherein said surface of said annular diversion element has a step between said third angular position and said first angular position, and at said step said spacing value of said inner edge spacing and of said outer edge spacing is reduced to said second spacing value or to said first spacing value. 
     
     
         18 . The separator unit according to  claim 1 , wherein:
 said collecting container extends along the longitudinal axis from a first end side to an oppositely-lying second end side;   said inlet opening is closer to said first end side along the longitudinal axis than to said second end side; and   the normal vector of said obliquely positioned section of said surface of said diversion element is oriented toward said second end side.   
     
     
         19 . The separator unit according to  claim 1 , wherein:
 said diversion element having said surface acting on the suction airflow is at least one of an ejection or compression element; and   said at least one of ejection or compression element is configured to be moved within said collecting container along the longitudinal axis in order to at least one of compress dirt particles located in said collecting container or eject the dirt particles out of said collecting container.   
     
     
         20 . The separator unit according to  claim 19 , wherein said at least one of ejection or compression element is disposed in an initial position along a radial direction relative to the longitudinal axis being flush with said inlet opening. 
     
     
         21 . A suction apparatus, comprising:
 the separator unit according to  claim 1 ; and   a fan configured to create the suction airflow from a suction mouth, through said inlet opening of the separator unit, through a filter unit to said fan.