Hair dryer equipped with an electric motor

Abstract

A hair dryer may include an electric motor configured for being set at different speeds comprising a maximum speed setting, a fan, operated by said electric motor to produce an air flow, electric heating means for heating the air flow produced by the fan, said electric heating means being arranged at a pre-set distance from said electric motor and the fan, an electronic control board configured to drive the electric motor, and at least one emitter of visual and/or acoustic signal and/or a vibration connected to said electronic control board, said electronic control board having at least one microprocessor configured to detect the power emitted by said electric motor and to control the emitter of visual and/or acoustic signal and/or a vibration to emit a visual and/or acoustic signal and/or a vibration whenever a decrease in electric power with respect to the rated electric power corresponding to the speed set is detected.

1 . A hair dryer comprising a body provided with at least one upper element and a grip portion adapted to be grasped by a user and operatively connected to said at least one upper element; said upper element extending along an axis (X-X) and having, at an end thereof, an air inlet opening and, at the opposite end, a front air outlet opening; said upper element comprising, in its inside:
 an electric motor; configured for being set at different speeds comprising a maximum speed setting;   a fan, operated by said electric motor to produce an air flow which passes through the upper element and comes out of the front opening;   electric heating means for heating the air flow produced by the fan; said electric heating means being arranged at a pre-set distance from said electric motor and the fan;   an electronic control board configured to drive the electric motor;   characterized by comprising: 
 at least one emitter of visual and/or acoustic signal and/or vibration, which is connected to said electronic control board; 
 said electronic control board comprising at least one microprocessor configured to detect the power emitted by said electric motor and to control the emitter of visual and/or acoustic signal and/or a vibration to emit a visual and/or acoustic signal and/or a vibration whenever a decrease in electric power with respect to a rated electric power corresponding to a set speed is detected. 
   
     
     
         2 . The hair dryer according to  claim 1 , characterized in that said at least one microprocessor is configured to detect the power emitted by said electric motor and to control the emitter of visual and/or acoustic signal and/or a vibration to emit a visual and/or acoustic signal and/or vibration whenever a decrease in electric power with respect to the rated electric power at maximum speed is detected. 
     
     
         3 . The hair dryer according to  claim 1 , characterized in that said at least one microprocessor is configured to detect the power emitted by said electric motor ( 6 ) and to control the emitter ( 8 ) of visual and/or acoustic signal and/or a vibration to emit a visual and/or acoustic signal and/or a vibration whenever a decrease in electric power equal to at least 30% of the rated electric power corresponding to the set speed is detected. 
     
     
         4 . The hair dryer according to  claim 3 , characterized in that said at least one microprocessor is configured to detect the power emitted by said electric motor and to control the emitter of visual and/or acoustic signal and/or a vibration to emit a visual and/or acoustic signal and/or a vibration if a decrease in electric power equal to at least 30% of the rated electric power at maximum speed, is detected. 
     
     
         5 . The hair dryer according to  claim 1 , characterized in that said at least one microprocessor is configured to control said emitter of visual and/or acoustic signal and/or a vibration to emit at least one visual and/or acoustic signal and/or a vibration whenever the at least one microprocessor detects an electric power of less than or equal to 90 watts emitted by said electric motor. 
     
     
         6 . The hair dryer according to  claim 5 , characterized in that said at least one microprocessor is configured to control said emitter of visual and/or acoustic signal and/or a vibration to emit at least one visual and/or acoustic signal and/or a vibration if the microcontroller detects an electric power of less than or equal to 80 watts emitted by said electric motor. 
     
     
         7 . The hair dryer according to  claim 1 , characterized in that said at least one microprocessor is configured to control said emitter of visual and/or acoustic signal and/or a vibration to emit at least one visual and/or acoustic signal and/or a vibration whenever the microcontroller detects an electric power of less than 50 watts emitted by said electric motor, if said electric motor is set at a different speed with respect to said maximum speed setting. 
     
     
         8 . The hair dryer according to  claim 7 , characterized in that said at least one microprocessor is configured to control said emitter of visual and/or acoustic signal and/or a vibration to emit at least one visual and/or acoustic signal and/or a vibration whenever the at least one microprocessor detects an electric power of less than or equal to 45 watts emitted by said electric motor, if said electric motor is set at a different speed with respect to said maximum speed setting. 
     
     
         9 . The hair dryer according to  claim 1 , characterized in that said at least one microprocessor is configured to detect the electric power of the motor at pre-set time intervals. 
     
     
         10 . The hair dryer ( 1 ) according to  claim 9 , characterized in that said pre-set time interval is greater than or equal to 10 sec. 
     
     
         11 . The hair dryer ( 1 ) according to  claim 1 , characterized in that said emitter of visual and/or acoustic signal and/or a vibration comprises at least one LED. 
     
     
         12 . The hair dryer according to  claim 11 , characterized in that said at least one LED is positioned on said upper element such as to be visible for the user. 
     
     
         13 . The hair dryer according to  claim 1 , characterized in that said electric motor is a brushless motor. 
     
     
         14 . The hair dryer according to  claim 13 , characterized in that said electric motor is a single-phase brushless motor. 
     
     
         15 . The hair dryer according to  claim 13 , characterized in that said electric motor is a three-phase brushless motor.