JPH01131606A - Hair dryer - Google Patents

Abstract

PURPOSE: To correct strain caused by temp. gradient of a far infrared ray-emitting body to obtain uniform far infrared rays emission, to uniformly heat the hair of the head and to avoid that impact force from the outside acts between an electrical resistance body and the far infrared ray-emitting body to prevent the brittle far infrared ray-emitting body from being cracked and broken, by providing the far infrared ray-emitting body on the side of heating direction of the electrical resistance wiring and at a distance to the electrical resistance wiring. CONSTITUTION: An electrical resistance wiring 7 consisting of a thermistor with positive characteristics and a nickel-chrome wiring is extended on a heater base sheet 8 consisting of an insulating material such as a mica sheet and a far infrared rays emitter 9 generating far infrared rays with a zone of long wave length is arranged by facing it to the direction for giving heat, namely, the end face of the blowing outlet side so as to follow the resistance wiring 7 and it is pressed into a fan cylinder 6 and is fixed therein. In this case, there exists a definite distance G between the electrical resistance wiring 7 and the far infrared rays emitter 9. Air exists between both and the far infrared rays emitter 9 is heated not by the above described direct conduction of heat but by indirect conduction of heat and radiation of heat and the air between both suppresses temp. gradient and approximately uniform heating is performed to prevent crack and breakage caused by strain from being generated.

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 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 equipped with a motor, a fan, and an electric resistance wire for heat generation. It is equipped with a radiator.

〔Example〕

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

Reference numeral 7 denotes 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 wire 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 MG 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 at 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 at 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, causing cracks and breakage. However, by providing a certain distance G, air exists between them, and the far-infrared radiator 9 is heated not by the above-mentioned direct conduction heat but by indirect conduction heat and radiant heat, and the air between them has a temperature gradient. As a result, cracks and damage due to strain can be prevented.

In addition, the amount of far-infrared rays emitted from the far-infrared radiator 9 generally increases or decreases depending on its own temperature, but due to uniform heating due to the distance G, the amount of far-infrared rays emitted from the far-infrared radiator 9 becomes almost uniform. The temperature distribution of the hair can also be made less variable.

Also, since this type of hair dryer is generally handheld,
It is easy for users to accidentally drop it or hit it against other equipment. In this case, if the electrical resistance wire 7 and the far-infrared radiator 9 are in contact with each other, an impact force will act between them, causing accidents such as disconnection of the electrical resistance wire 7 and cracks or chips in the far-infrared radiator 9. Although this is likely to occur, by providing the 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 hits the resistance wire with air, turns it into steam, and blows it onto your hair.

Now, the far-infrared radiator 9 is heated and actively emits far-infrared rays 1
Do 3. When this is projected onto the hair 14, the deep part 14
It causes an exothermic effect in a. 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 far infrared rays emitted intensely 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 explode due to both, but the gasified water is swept away by the blown air current, promoting evaporation one after another, resulting in rapid drying. These functions synergistically double the effect because the pin part deeply separates the hair and creates multiple ventilation cavities.

〔effect] As explained above, the motor according to the present invention.

In a hair dryer that has a fan and a heating electric resistance wire, a far-infrared radiator is installed on the heating direction side of the electric resistance wire and at a distance from the electric resistance wire, so distortion due to the temperature gradient of the far-infrared radiator By correcting this, uniform far-infrared radiation can be obtained and the hair can be heated evenly, and the impact force from the outside can be avoided between the electrical resistor and the far-infrared radiator, and the brittle far-infrared rays can be heated. It is possible to prevent cracks and damage to the red radiator.

[Brief explanation of the drawing]

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. Applicant Kyushu Hitachi Maxell Co., Ltd. Representative Seigo Sato

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. Dryer.