Hair dryer, an attachment for a hair dryer, and a hair dryer provided with such an attachment

Abstract

A hair dryer ( 1 ) comprises a housing ( 2 ) having a central axis (X). The housing ( 2 ) comprises an outlet ( 4 ) for a stream of air to flow through, and a flow guide means. The flow guide means comprises a static flow guide surface for guiding the stream of air, said flow guide surface being, at least partly, angled with respect to the central axis (X) of the housing ( 2 ).

1 . An attachment ( 20 ) for a hair dryer ( 1 ), the attachment comprising
 coupling means ( 21 ) adapted to be coupled to an outlet ( 4 ) of said hair dryer ( 1 ) for expelling a stream of air, and   a flow guide means ( 30 ) having a static flow guide surface ( 32 ) for guiding the stream of air, said flow guide surface ( 32 ) being, at least partly, angled with respect to a central axis (B) of the attachment ( 20 ),   wherein the angled static flow guide surface ( 32 ) is arranged to provide the stream of air with a substantially tangentially directed velocity component in addition to a velocity component which is in the same direction as the central axis (B) of the attachment ( 20 ).   
     
     
         2 . Attachment ( 20 ) according to  claim 1 , wherein the flow guide means ( 30 ) comprise a number of flow guide vanes ( 31 ) which extend radially inward within an inner circumference of the attachment ( 20 ). 
     
     
         3 . Attachment ( 20 ) according to  claim 2 , wherein the flow guide vanes are ( 31 ) twisted, in particular helically twisted, around their respective longitudinal axis (h). 
     
     
         4 . Attachment ( 20 ) according to  claim 3 , wherein the flow guide vanes ( 31 ) are twisted along their respective longitudinal axis such that part of the flow guide surface ( 32 ) is substantially parallel to the central axis (B) of the attachment ( 20 ) and part of the flow guide surface ( 32 ) is substantially perpendicular to the central axis (B) of the attachment ( 20 ). 
     
     
         5 . Attachment ( 20 ) according to  claim 4 , wherein the flow guide surface ( 32 ) is substantially perpendicular to the central axis (B) of the attachment ( 20 ) near a distal end of the flow guide vanes ( 31 ). 
     
     
         6 . Attachment ( 20 ) according to  claim 4 , wherein the flow guide surface ( 32 ) is substantially parallel to the central axis (B) of the coupling means ( 21 ) near the central axis (B). 
     
     
         7 . Attachment ( 20 ) according to  claim 2 , wherein the flow guide vanes ( 31 ) are provided in a sunburst pattern. 
     
     
         8 . A hair dryer ( 1 ) comprising a housing ( 2 ) with an inlet ( 3 ) and an outlet ( 4 ) for a stream of air to flow through, said housing ( 2 ) enclosing a ventilator drivable by a drive motor for flowing the stream of air through the housing ( 2 ), and a heater for heating said stream of air, and coupled to the outlet ( 4 ), an attachment ( 20 ) according to  claim 1 . 
     
     
         9 . A hair dryer ( 1 ), comprising
 a housing ( 2 ) having a central axis (X), said housing ( 2 ) comprising an outlet ( 4 ) for a stream of air to flow through, and   a flow guide means ( 30 ),   
       characterized in that,
 the flow guide means ( 30 ) comprises a static flow guide surface ( 32 ) for guiding the stream of air, said flow guide surface ( 32 ) being, at least partly, angled with respect to the central axis (X) of the housing ( 2 ). 
 
     
     
         10 . The hair dryer ( 1 ) according to  claim 9 , wherein the flow guide means ( 30 ) comprise a number of flow guide vanes ( 31 ) which extend radially inward from an inner surface of the housing ( 2 ). 
     
     
         11 . The hair dryer ( 1 ) according to  claim 10 , wherein the flow guide vanes ( 31 ) are twisted, in particular helically twisted, around their respective longitudinal axis (h). 
     
     
         12 . The hair dryer ( 1 ) according to  claim 11 , wherein the flow guide vanes ( 31 ) are twisted, in particular helically twisted, along their respective longitudinal axis such that part of the flow guide surface ( 32 ) is substantially parallel to the central axis (X) of the housing ( 2 ) and part of the flow guide surface ( 32 ) is substantially perpendicular to the central axis (X) of the housing ( 2 ). 
     
     
         13 . The hair dryer ( 1 ) according to  claim 12 , wherein the flow guide surface ( 32 ) is substantially perpendicular to the central axis (X) of the housing ( 2 ) near the inner surface of the housing ( 2 ). 
     
     
         14 . The hair dryer ( 1 ) according to  claim 12 , wherein the flow guide surface ( 32 ) is substantially parallel to the central axis (X) of the housing ( 2 ) near the central axis (X). 
     
     
         15 . The hair dryer ( 1 ) according to  claim 10 , wherein the flow guide vanes ( 31 ) are provided in a sunburst pattern.