Hair dryer

Abstract

A hair dryer comprises a fan (F) for generating an air flow, and a drying chamber (HC) having a hair inlet (II) into which hair can be guided by the air flow. A cross-section of the drying chamber (HC) has a first dimension in a first direction, which first dimension is at least 5 times larger than a second dimension in a second direction perpendicular to the first direction, wherein the first and second directions are perpendicular to a direction of the air flow. The drying chamber (HC) may be folded in that the drying chamber has a U-turn in the direction of the air flow. A first area of the cross-section of the drying chamber (HC) at the U-turn may be smaller than a second area of the cross-section in the middle between the hair inlet (II) and the U-turn. A hair inlet (II) of the drying chamber (HC) may be shaped to follow a contour of a user's head. The hair dryer may be arranged for heating hair from multiple sides. A wall of the drying chamber (HC) may be provided with a hydrophilic or water absorbing or water surface tension reducing material. The water absorbing material may be regenerated by means of hot air. The drying chamber (HC) may be openable, whereby the drying chamber can be cleaned. The hair dryer may have a sensor (MS) for sensing temperature and/or humidity of the air flow at an air outlet of the hair dryer, and a part of the air flow may be recirculated based on an output of the sensor (MS). The hair dryer may have a nozzle to channel hot air towards a user's scalp. A wall of the drying chamber (HC) may be shaped so as to style the hair and/or increase a contact area that is in contact with the hair.

1 . A hair dryer comprising:
 a fan for generating an air flow; and   a drying chamber having a hair inlet into which hair can be guided by the air flow;   wherein a cross-section of the drying chamber has a first dimension in a first direction, which first dimension is at least 5 times larger than a second dimension in a second direction perpendicular to the first direction, wherein both the first direction and the second direction are perpendicular to a direction of the air flow.   
     
     
         2 . A hair dryer as claimed in  claim 1 , wherein the first dimension is at least 10 times larger than a second dimension. 
     
     
         3 . A hair dryer as claimed in  claim 1 , wherein the drying chamber is folded in that the drying chamber has a U-turn in the direction of the air flow. 
     
     
         4 . A hair dryer as claimed in  claim 3 , wherein a first area of the cross-section of the drying chamber at the U-turn is smaller than a second area of the cross-section in the middle between the hair inlet and the U-turn. 
     
     
         5 . A hair dryer as claimed in  claim 1 , wherein the hair inlet of the drying chamber is shaped to follow a contour of a user's head. 
     
     
         6 . A hair dryer as claimed in  claim 1 , wherein the hair dryer is arranged for heating hair from multiple sides. 
     
     
         7 . A hair dryer as claimed in  claim 1 , wherein a wall of the drying chamber is provided with a hydrophilic or water absorbing or water surface tension reducing material. 
     
     
         8 . A hair dryer as claimed in  claim 7 , wherein the water absorbing material can be regenerated by means of hot air. 
     
     
         9 . A hair dryer as claimed in  claim 1 , wherein the drying chamber is openable, whereby the drying chamber can be cleaned. 
     
     
         10 . A hair dryer as claimed in  claim 1 , wherein the hair dryer has a sensor for sensing temperature and/or humidity of the air flow at an air outlet of the hair dryer, and wherein a part of the air flow is recirculated based on an output of the sensor. 
     
     
         11 . A hair dryer as claimed in  claim 1 , wherein the hair dryer has a nozzle to channel hot air towards a user's scalp. 
     
     
         12 . A hair dryer as claimed in  claim 1 , wherein a wall of the drying chamber is shaped so as to style the hair and/or increase a contact area that is in contact with the hair.