Nozzle

Abstract

An attachment for a hair styling apparatus includes an air inlet for receiving airflow from a hair styling apparatus, an air outlet, a duct for conveying air from the air inlet to the air outlet, at least one aperture in a wall of the duct, and a guiding wall within the duct and in proximity to the at least one aperture, wherein the guiding wall forms a barrier at an upstream side of the at least one aperture. Cool ambient air is entrained through each aperture into the attachment by the heated airflow from the hair styling apparatus. The entrained airflow passes internally along the wall of the duct and functions to minimize the temperature of the wall.

1 . An attachment for a hair styling apparatus comprising:
 an air inlet for receiving airflow from a hair styling apparatus;   an air outlet;   a duct for conveying air from the air inlet to the air outlet;   at least one aperture in a wall of the duct and located proximal to the air inlet; and   a guiding wall within the duct and in proximity to the at least one aperture, wherein the guiding wall forms a barrier at an upstream side of the at least one aperture and extends downstream of the aperture for a distance in the range of 5 mm to 15 mm.   
     
     
         2 . The attachment of  claim 1 , wherein the air outlet is an elongate slot. 
     
     
         3 . The attachment of  claim 2 , further comprising a side wall of the duct extending from each end of the elongate air outlet slot towards the air inlet. 
     
     
         4 . The attachment of  claim 3 , wherein the aperture is positioned in each side wall. 
     
     
         5 . The attachment of  claim 1 , wherein the at least one aperture has a rounded rectangular shape. 
     
     
         6 . The attachment of  claim 5 , wherein the at least one aperture is approximately 3 mm by 5 mm. 
     
     
         7 . The attachment of  claim 1 , wherein the at least one aperture is a slot extending partially around the external surface of the duct. 
     
     
         8 . The attachment of  claim 1 , wherein the at least one aperture is a slot extending around the external surface of the duct. 
     
     
         9 . The attachment of  claim 1 , wherein the elongate air outlet slot has dimensions of length, L, to height, H, in a ratio in the range of 13:1 to 15:1. 
     
     
         10 . The attachment of  claim 9 , wherein the elongate air outlet slot has dimensions of length, L, to height, H, in a ratio of 14:1.