JPH0144322B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device whose main purpose is to dry and set hair, etc., and in particular, to a device that can dry and set hair in a short time and with an energy-saving effect. be.

[Conventional technology and problems]

Conventional devices of this kind energize an electrical resistor, transfer the generated Joule heat to the air sent from a blower, and blow the heated air onto the hair to remove moisture from the surface of the hair and set it. was. In this case, most of the hot air that is blown dissipates into the atmosphere without transferring its retained heat to the hair. This phenomenon can be confirmed immediately by bringing your hand close to where the hot air is being blown. This is because the hot air runs idly without coming into contact with the surface of the hair.

[Means for solving problems]

The present invention has been made in view of the above circumstances, and is a hair styling dryer having a motor, a fan, and a heating electric resistance wire. It is equipped with a radiator.

〔Example〕

This will be explained below using examples. Reference numeral 1 denotes a motor having an axial fan 2, which is held between ribs 5 provided on a rear cover 4 having a vent 3 and press-fitted into a blower tube 6.

7 is an electric resistance wire made of a positive temperature coefficient thermistor, a nichrome wire, etc., which is stretched over a heater board 8 made of an insulating material such as a mica plate, and has a long wavelength band on its end face in the direction of heat application, that is, on the outlet side. A far-infrared radiator 9 (for example, obtained by sintering silicate as a main material) that generates far-infrared rays is arranged facing the resistance wire 7 and press-fitted into the blast tube 6. In this case, the electrical resistance wire 7 and the far-infrared radiator 9 have a constant distance G as shown in FIG. This is advantageous in the following respects.

When the electrical resistance wire 7 and the far-infrared radiator 9 are placed in close contact with each other, the temperature of the contact point between the electrical resistance wire 7 and the far-infrared radiator 9, which is a heat source, becomes higher than the temperature of the non-contact point. Therefore, a local temperature gradient occurs within the far-infrared radiator 9, and this temperature gradient causes distortion in the far-infrared radiator 9, which is generally sintered and has a weak mechanical strength, resulting in cracks and damage. Become. However, by providing a certain distance G, air exists between them, and the far-infrared radiator 9 is heated not by the direct conduction heat but by indirect conduction heat and radiant heat, and the air between the two is heated. Since temperature gradients are suppressed and heating is almost uniform, cracks and damage due to strain can be prevented.

Furthermore, although the amount of far-infrared rays emitted from the far-infrared radiator 9 generally increases or decreases depending on its own temperature, the amount of far-infrared rays emitted from the far-infrared radiator 9 becomes almost uniform due to uniform heating due to the distance G. The temperature distribution of the hair due to radiation can also be made to have little change.

Furthermore, since this type of hair dryer is generally handheld, it is easy for the user to accidentally drop it or hit it against other equipment. In this case, the electrical resistance wire 7
When the far-infrared radiator 9 and the far-infrared radiator 9 are in contact with each other, an impact force acts between them, causing the electrical resistance wire 7 to break or the far-infrared radiator 9 to break.
However, by providing a distance G, the influence of the impact force acting between the two can be avoided.

Reference numeral 12 is formed by providing a plurality of grooves at the tip of the blast tube using a plurality of pins.

When drying and setting the hair, first insert the pin into the hair. When the motor 1 and the resistance wire 7 are energized, the temperature of the resistance wire rises immediately and the far-infrared radiator 9
is also heated. Fan 2 applies air to the resistance wire,
Make it into steam and spray it on your hair.

Now, the far-infrared radiator 9 is heated and actively emits far-infrared rays 13. When this is projected onto the hair 14, it generates heat in the deep part 14a of the hair. On the other hand, the heat possessed by the air 16 blown onto the hair through the gap in the far-infrared radiator 9 has a relatively short wavelength, so it heats the surface layer 14b of the hair alone. For example, when a water droplet is attached as shown in 15, the emitted far infrared rays violently heat the deep part of the water droplet. On the other hand, the blown air heats the surface layer of the water droplets. The water droplets quickly evaporate due to both, but the gasified water is swept away by the blown air current, promoting evaporation one after another, and drying occurs quickly.
These functions double the effect synergistically because the pin part deeply separates the hair and creates multiple ventilation cavities.

〔effect〕

As explained above, according to the present invention, in a hair styling dryer having a motor, a fan, and a heating electric resistance wire, a far-infrared radiator is provided on the side of the electric resistance wire in the heating direction and at a distance from the electric resistance wire. Therefore, distortion caused by the temperature gradient of the far-infrared radiator is corrected, uniform far-infrared radiation is obtained, and the hair can be heated evenly.
Furthermore, it is possible to prevent external impact force from acting between the electrical resistor and the far-infrared radiator, thereby preventing cracks and damage to the fragile far-infrared radiator.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a side view, and FIG. 3 is an explanatory diagram of the operation. 1...Motor, 2...Fan, 7...Electric resistance wire, 9
...Far-infrared radiator.

Claims (1)

[Claims] 1. A hair styling dryer having a motor, a fan, and a heat generating electric resistance wire, characterized in that a far-infrared radiator is provided on the heating direction side of the electric resistance wire and at a distance from the electric resistance wire. .