JPH03254708A - Hair dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hair dryer for drying hair.

BACKGROUND OF THE INVENTION Conventionally, this type of hair dryer has a main body case A with a built-in warm air generating device attached to the top of the stand, and the hair is dried by hot air blown from the air outlet of the main body case A. There is.

As shown in FIG. 5, the structure inside this main body case A includes a holder 24 having a cylindrical portion 23 that supports the outer shell of the motor 22 to which the fan 21 is attached, and
A heater 25 is disposed on the air blowing side of the air conditioner 1 to generate warm air.

Problems to be Solved by the Invention However, with such a structure, the temperature of the windings of the motor 22 rises abnormally, and eventually the windings burn out and the motor 22 stops driving. .

In other words, as the motor 22 rotates, the winding body generates heat by itself, and since there is very little effect of cooling this, the temperature increases along with the ambient temperature in which the motor 22 is located.

This is the motor 22 located at the rotation center of the fan 210.
Since this part is outside the area of the air blowing from the fan 21, the motor itself cannot be cooled down, and as a result, the temperature inside the motor 22 increases abnormally.

Accordingly, a first object of the present invention is to provide a hair dryer that can prevent the motor from overheating by effectively cooling the motor using air from a fan when energized.

The second purpose is to more effectively prevent overheating of the motor.

Means for Solving the Problems and In order to achieve the above object, the present invention provides a ventilation passage disposed on the outer periphery of the motor and between the outer shell of the motor and collecting air from the fan. It has a funnel-shaped wind collecting section.

Furthermore, in order to achieve the second object, the present invention has a funnel-shaped air collecting section that is larger than the inner diameter of the fan.

Function: With the above structure, the hair dryer of the present invention can forcibly cool down the heat generated by the motor winding from the outside using the fan.

In other words, the funnel-shaped air collection part blows the air from the fan rotated by the motor toward the outside of the motor located at the center of rotation of the fan, and the collected air is directed outside the motor. The motor can be forcibly cooled by passing through the ventilation path formed between the motor and the motor.

In addition, by making the funnel-shaped air collecting part larger than the inner diameter of the fan, it is possible to collect a larger amount of air from the fan, further increasing the cooling effect of the motor. .

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In FIGS. 1 and 2, 1 is a main body case containing a built-in fan 3 and a heater 4 that are directly connected to a motor 2, and 5 is a cylindrical stand that supports this main body case 1.
It has a vibro inside and is formed to be movable up and down so that the height of the main body case 1 can be varied. Reference numeral 7 denotes a holder that holds the motor 2 by a holding part 8 and supports it inside the main body case 1, which forms a funnel-shaped air collection part 9 that collects air from the fan 3, and also serves as a holder for the motor 2. A ventilation passage 10 is provided between the outer shell. and,
The funnel-shaped air collecting portion 9 is tapered toward the fan 3, and is formed to have a diameter larger than the inner diameter of the fan 3 and protrude into the air blowing area of the fan 3. 11
and 12 are vents for hot air heated by a heater and intake ports for taking in outside air, which are provided on the front and back sides of the main body case 1.

Next, the effect of the configuration of this embodiment will be explained. When energized, the fan 3 uses the heater 4 to heat the air taken in from the intake port 12 by the rotation of the motor 2, turning it into warm air.
Blow air from 1.

Before the air taken in by the fan 3 reaches the heater 4, it is collected by the air collecting part 9 of the holder 7, and after being blown to the outside of the motor 2, it is passed through the air passage 10 provided between the outside of the motor 2. Similarly, the hot air is turned into warm air by the heater 4 and is blown from the air outlet 11.

In this way, the intake air is constantly forcedly blown onto the outside of the motor 2, thereby suppressing the rise in temperature of the motor due to heat generation in the windings and preventing burnout of the windings.

In addition, the funnel-shaped air collection part 9 is tapered toward the fan 3 and is formed so that its diameter is larger than the inner diameter of the fan 3 and protrudes into the air blowing area of the fan 3.
The efficiency of collecting air can be increased, and the cooling effect of the motor 2 can be further improved.

FIG. 3 shows another embodiment in which the holding part 8 is cut out so that the outer part of the motor 2 is exposed from the holding part 8 of the holder 7. It is now possible to directly blow outside air, and motor 2
The cooling effect can be further enhanced.

In the embodiment shown in FIG. 4, a part of the heater 4 is arranged to face the downstream side of the air collecting section 9, and the air collected by the air collecting section 9 and passing through the ventilation passage 10 is collected. The air can be efficiently heated and converted into hot air, and high-temperature hot air can also be emitted from the center of the air outlet 11.

In addition, in the embodiment, the wind collecting section is formed on the holder that holds the motor, but the wind collecting section may be provided separately from the holder.

Effects of the Invention As described above, the present invention includes a funnel-shaped air collecting part that is arranged on the outer periphery of the motor and provides a ventilation path between the motor and the outer shell, and collects the air blown from the fan. By forming the fan, outside air can be blown toward the outside of the motor located at the center of rotation of the fan, and the motor can be forcibly cooled.

Further, by making the funnel-shaped air collection portion larger than the inner diameter of the fan, a larger amount of air from the fan can be collected, and the cooling effect of the motor can be further enhanced.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of a hair dryer showing an embodiment of the present invention, and FIG. 5 is a sectional view of a main part of a conventional hair dryer. 1... Main body case, 2... Motor, 3... Fan, 4... Heater, 7... Holder 9... Wind collector,
10...Ventilation duct.

Claims (4)

[Claims] (1) A motor and a fan attached to this motor,
A main body case having an inlet for taking in outside air, a heater disposed on the blowing side of the fan, an outlet for hot air heated by the heater, and a holder for holding the motor, the outer peripheral part of the motor 1. A hair dryer that is disposed in a motor and has a ventilation path between the motor and the outer shell, and a funnel-shaped air collection part that collects air from the fan. (2) The hair dryer according to claim 1, wherein the funnel-shaped air collection portion has a larger inner diameter than the fan. (3) The hair dryer according to claim 1, wherein the outer shell of the motor is exposed from the holding portion of the holder. (4) The hair dryer according to claim 1, wherein the heater is disposed facing the downstream side of the air collecting section.