Air duct system applied to hair straightening device

Abstract

Provided is an air duct system applied to a hair straightening device, relating to the technical field of hair straightening devices. The air duct system includes a main body. There is a main flow channel and two branch flow channels connected to the main flow channel inside the main body. The main body has two hair straightening walls that cooperate with each other at intervals. A hair straightening space that is used to straighten or dry hair is formed between the two hair straightening walls. A main flow channel and two branch flow channels that are connected to the main flow channel are disposed inside the main body. The two branch flow channels are disposed along length directions of the two hair straightening walls. A plurality of oblique air outlets are disposed on the hair straightening wall along a length direction of the hair straightening wall.

What is claimed is: 
     
         1 . An air duct system applied to a hair straightening device, comprising a main body ( 10 ), wherein the main body ( 10 ) has two hair straightening walls ( 20 ) that cooperate with each other at intervals, a hair straightening space ( 21 ) that is used to straighten or dry hair is formed between the two hair straightening walls ( 20 ), a main flow channel ( 11 ) and two branch flow channels ( 12 ) that are connected to the main flow channel ( 11 ) are disposed inside the main body ( 10 ), the two branch flow channels ( 12 ) are disposed along length directions of the two hair straightening walls ( 20 ), a strip-shaped oblique air outlet ( 22 ) is disposed on the hair straightening wall ( 20 ) along a length direction of the hair straightening wall ( 20 ), and the hair straightening space ( 21 ) is connected to the branch flow channel ( 12 ) by using the oblique air outlet ( 22 ); an air inlet ( 13 ) connected to the main flow channel ( 11 ) is disposed on the air inlet main body ( 10 ), so that the main body ( 10 ) is able to form a directional fluid that enters from the air inlet ( 13 ) and passes through the main flow channel ( 11 ) and the branch flow channel ( 12 ), and then blows from the oblique air outlet ( 22 ) to the hair straightening space ( 21 ); a wavy structure ( 23 ) corresponding to the oblique air outlet ( 22 ) is formed on a wall surface on one side that is of the hair straightening wall ( 20 ) and that corresponds to the branch flow channel ( 12 ), and the wavy structure ( 23 ) and the oblique air outlet ( 22 ) are in an arc-plane transition structure; and a cross-sectional area of the branch flow channel ( 12 ) from one end connected to the main flow channel ( 11 ) to a tail end of the branch flow channel ( 12 ) gradually decreases, and a longitudinal dimension of the wavy structure ( 23 ) gradually decreases as the cross-sectional area of the branch flow channel ( 12 ) gradually decreases. 
     
     
         2 . The air duct system applied to a hair straightening device according to  claim 1 , wherein the branch flow channel ( 12 ) has an air outlet surface as a wall surface of the hair straightening wall ( 20 ), upper and lower side surfaces that are connected to the air outlet surface, an opposite surface relative to the air outlet surface, and a tail end surface located at the tail end of the branch flow channel ( 12 ). 
     
     
         3 . The air duct system applied to a hair straightening device according to  claim 2 , wherein the wavy structure ( 23 ) has a plurality of strip-shaped protruding portions ( 231 ) and recessed portions ( 232 ) that are disposed in staggered arrangement, and the protruding portion ( 231 ) and recessed portion ( 232 ) that are adjacent are in arc-plane transition. 
     
     
         4 . The air duct system applied to a hair straightening device according to  claim 3 , wherein
 there are two wavy structures ( 23 ), and the two wavy structures ( 23 ) are respectively distributed between the oblique air outlet ( 22 ) and an upper side surface of the branch flow channel ( 12 ) and between the oblique air outlet ( 22 ) and a lower side surface of the branch flow channel ( 12 ); or,   there is only one wavy structure ( 23 ), and the only one wavy structure ( 23 ) is distributed between the oblique air outlet ( 22 ) and an upper side of the branch flow channel ( 12 ) or between the oblique air outlet ( 22 ) and a lower side surface of the branch flow channel ( 12 ).   
     
     
         5 . The air duct system applied to a hair straightening device according to  claim 4 , wherein there are two wavy structures ( 23 ), and the two wavy structures ( 23 ) are respectively distributed between the oblique air outlet ( 22 ) and the upper side surface of the branch flow channel ( 12 ) and between the oblique air outlet ( 22 ) and the lower side surface of the branch flow channel ( 12 ); wherein
 the protruding portions ( 231 ) of the two wavy structures ( 23 ) are connected to each other, and the recessed portions ( 232 ) of the two wavy structures ( 23 ) are connected to each other; or   the protruding portions ( 231 ) of the two wavy structures ( 23 ) are staggered and distributed mutually, and the recessed portions ( 232 ) of the two wavy structures ( 23 ) are staggered and distributed mutually.   
     
     
         6 . The air duct system applied to a hair straightening device according to  claim 5 , wherein the oblique air outlet ( 22 ) is disposed on a middle part, a lower part or an upper part of the hair straightening device ( 20 ). 
     
     
         7 . The air duct system applied to a hair straightening device according to  claim 5 , wherein there is an included angle of 90° to 180° between the two wavy structures ( 23 ). 
     
     
         8 . The air duct system applied to a hair straightening device according to  claim 4 , wherein at least one side surface of the branch flow channel ( 12 ) is disposed in a structure that approaches to the oblique air outlet ( 22 ) gradually from an end connected to the main flow channel ( 11 ) to a tail end surface of the branch flow channel ( 12 ), so that lengths of the protruding portion ( 231 ) and the recessed portion ( 232 ) gradually decrease as the cross-sectional area of the branch flow channel ( 12 ) gradually decreases. 
     
     
         9 . The air duct system applied to a hair straightening device according to  claim 1 , wherein the oblique air outlet ( 22 ) has a transition section ( 221 ) normally in abutting joint with the branch flow channel ( 12 ) and an oblique section ( 222 ) obliquely in butting joint with the hair straightening space ( 21 ). 
     
     
         10 . The air duct system applied to a hair straightening device according to  claim 9 , wherein there is an included angle of 20° to 60° between the oblique section ( 222 ) and a wall surface of the hair straightening wall ( 20 ). 
     
     
         11 . The air duct system applied to a hair straightening device according to  claim 9 , wherein
 the oblique air outlet ( 22 ) has a plurality of oblique air outlet holes ( 220 ); wherein   there is a first partition portion ( 24 ) as a part of the wavy structure ( 23 ) between two adjacent oblique air outlet holes ( 220 ), so that the wavy structure ( 23 ) and a corresponding oblique air outlet hole ( 220 ) are in an arc-plane transition structure; the first partition portion ( 24 ) is located in the transition section ( 221 ), so that the oblique sections ( 222 ) of the strip-shaped oblique air outlet holes ( 220 ) are connected to each other; or   there is a second partition portion ( 25 ) between two adjacent oblique air outlet holes ( 220 ), the second partition portion ( 25 ) has an expansion portion ( 251 ) connected to the wavy structure ( 23 ) and a sheet portion ( 252 ) formed on the expansion portion ( 251 ) and extending to the oblique section ( 222 ), and the expansion portion ( 251 ) and the sheet portion ( 252 ) are in arc-plane transition; or   there is an arc-shaped sheet ( 26 ) in abutting joint with the wavy structure ( 23 ) between two adjacent oblique air outlet holes ( 220 ), the arc-shaped sheet ( 26 ) protrudes out of an air outlet surface of the branch flow channel ( 12 ), the wavy structure ( 23 ) and the corresponding oblique air outlet ( 22 ) are in an arc-plane transition structure by using the arc-shaped sheet ( 26 ), and an outer side surface of the arc-shaped sheet ( 26 ) faces the air inlet ( 13 ) and is correspondingly disposed between two adjacent wavy structures ( 23 ).   
     
     
         12 . The air duct system applied to a hair straightening device according to  claim 1 , wherein a shunting structure ( 14 ) is disposed at a position between the main flow channel ( 11 ) and the two branch flow channels ( 12 ), and the shunting structure ( 14 ) and the first wavy structure ( 23 ) of the branch flow channel ( 12 ) are in an arc-plane transition structure.