Hair dryer

a hair dryer and dryer technology, applied in the direction of hair cleaning, hair drying, non-positive displacement fluid engine, etc., can solve the problems of water contacting the heater and electrocution of users by electromagnetic waves
US20130111777A1Inactive Publication Date: 2013-05-09BA SOLUTIONS
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BA SOLUTIONS
Publication Date
2013-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A hair dryer includes a motor and a fan to generate an air current within a housing, and a heater for selectively supplying heat into air introduced from the outside of the housing by the fan. A discharge nozzle is disposed on one end of the housing. A coanda surface is disposed on the discharge nozzle. Thus, the air passing through the housing flows along the coanda surface to suction air outside the discharge nozzle into a central passage part of the discharge nozzle, thereby mixing the suctioned air with the air passing through the housing. The air mixed within the central passage part is discharged through a discharge hole of the discharge nozzle. Since the air passing on the coanda surface suctions the air outside the discharge nozzle, the motor may be reduced in capacity. Also, an electromagnetic shielding effect may be significantly improved.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a hair dryer, and more particularly, to a hair dryer which generates an air current using a coanda effect.

[0003] 2. Description of the Related Art

[0004] General hair dryers are devices in which an air current generated by a fan driven by a motor is discharged to the outside to dry or adjust user's hair. Air discharged from a hair dryer may be changed in temperature as occasion demands. Thus, to discharge air having a relatively high temperature, a heater may be provided within the hair dryer.

[0005] However, in the hair dryer according to the related art, an amount of air discharged through a discharge hole is decided according to capacity of the motor and fan. Thus, to obtain a desired amount of air, each of the motor and fan should have capacity over a predetermined level. As a result, the hair dryer may be relatively increased in size.

[0006] Also, when the motor is driven to rotate the fan...

Claims

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