Hair dryer

Abstract

Provided is a hair dryer, including a housing, a wind module, a control key and a heating module. The housing has a handle, an air duct and an annular flow-guide chamber. One side of the handle forms an air inlet, one side of the air duct forms an air outlet, and the center of the annular flow-guide chamber forms a perforation. The annular flow-guide communicates with the handle and the air duct, and the angle between the handle and the air duct is not more than 180 degrees. The wind module is disposed in the handle and includes a motor, a fan, a control circuit and an electric power unit, mutually connected. The control key is disposed on the surface of the handle and connected to the control circuit. The heating module is disposed in the air duct and connected to the control circuit and the electric power unit.

What is claimed is: 
     
         1 . A hair dryer, comprising:
 a housing, having a handle an air duct and an annular flow-guide chamber; an air inlet formed on one side of the handle, an air outlet formed on one side of the air duct, and a perforation formed at center of the annular flow-guide chamber; the annular flow-guide chamber communicating with the handle and the air duct respectively and the angle between the handle and the air duct not more than 180 degrees;   a wind module, disposed inside the handle, comprising: a motor, a fan, a control circuit and an electric power unit, mutually connected;   a control key, disposed on surface of the handle and connected to the control circuit; and   a heating module, disposed inside the air duct and connected to the control circuit and the electric power unit.   
     
     
         2 . The hair dryer according to  claim 1 , wherein the cross-section of the perforation along the air flow direction is circular, elliptical or water drop shaped. 
     
     
         3 . The hair dryer according to  claim 1 , wherein the angle between the handle and the air duct is 90 or 180 degrees. 
     
     
         4 . The hair dryer according to  claim 1 , wherein the electric power unit is connected to an external power source. 
     
     
         5 . The hair dryer according to  claim 1 , wherein the hair dryer further comprises a wind deflector, detachably connected to the air outlet.