Supplying liquid to at least one area of a surface to be cleaned

Abstract

In the context of vacuum cleaning, a suction head is provided, which includes a housing that is couplable to an air suction source of a vacuum cleaner, and two brushes in a substantially parallel arrangement in the housing. The brushes are rotatable about a rotation axis and configured to interact with a surface to be cleaned. The suction head is further equipped with a wetting arrangement that enables a direct supply of liquid from at least one liquid supplying position to at least one area of the surface to be cleaned, where the at least one liquid supplying position is in an area between the brushes and at a level of the rotation axes of the brushes or closer to surface level.

1 . A suction head configured to be applied in a vacuum cleaner and to perform a cleaning action on a surface to be cleaned, the suction head comprising:
 a housing that includes a coupling area configured to enable coupling of the housing to an air suction source of the vacuum cleaner,   two brushes in a substantially parallel arrangement in the housing, wherein each of the two brushes is rotatable about a rotation axis and is configured to interact with the surface to be cleaned, and   a wetting arrangement that is arranged and configured to enable a direct supply of liquid from at least one liquid supplying position to at least one area of the surface to be cleaned, wherein the at least one liquid supplying position is in an area between the two brushes and at a level of the rotation axes of the two brushes or closer to surface level.   
     
     
         2 . The suction head according to  claim 1 , wherein the at least one liquid supplying position is at a bottom surface portion of the suction head, and wherein the atleast liquid supplying position is arranged and configured to face the surface to be cleaned at a distance of at least 2 mm and at most 6 mm to the surface. 
     
     
         3 . The suction head according to  claim 1 , wherein the wetting arrangement is arranged and configured to enable the direct supply of liquid from at least two liquid supplying positions distributed over the suction head in a direction (l) in which the rotation axes of the two brushes extend. 
     
     
         4 . The suction head according to  claim 1 , further comprising an elongated intermediate component that is located in the area between the two brushes and that optionally comprises two portions configured to cover portions of the two brushes. 
     
     
         5 . The suction head according to  claim 4 , wherein the elongated intermediate component, at the position of a top side thereof, is suspended from a portion of the housing. 
     
     
         6 . The suction head according to  claim 4 , wherein the at least one liquid supplying position is at a bottom surface portion of the elongated intermediate component, and wherein the bottom surface portion of the elongated intermediate component is arranged and configured to face the surface to be cleaned. 
     
     
         7 . The suction head according to  claim 6 , wherein the wetting arrangement comprises a conduit system configured to transport the direct supply of liquid and to let out the direct supply of liquid at the at least one liquid supplying position. 
     
     
         8 . The suction head according to  claim 7 , wherein the conduit system comprises at least one conduit extending through the elongated intermediate component. 
     
     
         9 . The suction head according to  claim 7 , wherein the conduit system comprises at least one main conduit and at least one branch conduit, and wherein the at least one branch conduit is coupled to the at least one main conduit and extends from the at least one main conduit towards the at least one liquid supplying position. 
     
     
         10 . The suction head according to  claim 9 , comprising a restriction element in fluid communication with the at least one main conduit and the at least one branch conduit, wherein the restriction element is provided with a restriction opening configured to allow the direct supply of liquid to pass in a direction from the at least one main conduit towards the at least one branch conduit, and wherein the restriction element or an assembly of components in which the restriction element is included is removably arranged in the suction head. 
     
     
         11 . The suction head according to  claim 1 , comprising at least one wheel that is rotatably arranged on the suction head, wherein the at least one wheel is configured to be in contact with the surface to be cleaned, and wherein the wetting arrangement is further arranged and configured to enable the direct supply of liquid to the at least one wheel. 
     
     
         12 . The suction head according to  claim 11 , wherein the wetting arrangement is arranged and configured to enable the direct supply of liquid to the at least one wheel at the position of a tread of the at least one wheel, from outside of the at least one wheel. 
     
     
         13 . The suction head according to  claim 11 , wherein the at least one wheel is arranged so that the two rotating brushes are enabled to interact with the wheel during operation of the suction head. 
     
     
         14 . The suction head according to  claim 11 , wherein the at least one wheel is located in the area between the two brushes. 
     
     
         15 . Cordless A cordless vacuum cleaner, comprising the suction head of  claim 1 .