CN114557530A

CN114557530A - Hair drier

Info

Publication number: CN114557530A
Application number: CN202111381804.7A
Authority: CN
Inventors: 熊本爱子; 鲇沢纱希
Original assignee: Twinbird Corp
Current assignee: Twinbird Corp
Priority date: 2020-11-27
Filing date: 2021-11-19
Publication date: 2022-05-31
Also published as: TW202220579A; JP2022085190A

Abstract

A hair dryer can efficiently generate far infrared rays and dry hair well. The blower has: a blowing mechanism provided in the vicinity of the air intake section in the main body having the air intake section and the air exhaust section; an air flow heating mechanism arranged at the downstream side of the air supply mechanism; and a far infrared ray emitter fixed to the air discharge unit and allowing an air flow to pass therethrough, wherein the far infrared ray emitter has a short cylindrical shape having a central axis parallel to the air flow passing through the far infrared ray emitter, the far infrared ray emitter has an annular main body and a vent hole provided inside the main body, and an end of the heater on the side of the air discharge unit is opposed to a rear surface so as to heat the rear surface, which is an end surface on the upstream side of the annular main body, by radiation heat from a heater constituting the air flow heating means, whereby the far infrared ray emitter can be efficiently heated to emit far infrared rays, and hair can be dried satisfactorily.

Description

Hair drier

Technical Field

The present invention relates to a hair dryer for drying wet hair by heat from a heater and far infrared rays from a far infrared ray emitter.

Background

Conventionally, as such a hair dryer, a hair dryer is known which includes:

a main body portion having an air outlet (corresponding to an exhaust portion of the present invention) at a front end thereof and an air intake portion on an opposite side thereof;

a blower fan (corresponding to the blower mechanism of the present invention) built in the vicinity of the suction portion of the main body;

a heat generating portion (corresponding to the airflow heating means of the present invention) disposed in a passage of the air sent by the air sending fan; and

a lattice-shaped far infrared ray generating member (corresponding to the far infrared ray emitter of the present invention) is disposed on the air blowing side with respect to the heating portion, and has a plurality of vent holes. In such a blower, it is necessary to form a fine-width grid and a vent having a large opening area so as not to obstruct the flow of air.

[ background Art document ]

[ patent document ]

Patent document 1 japanese patent No. 6053906 discloses that in such a hair dryer, the far infrared ray emitter is formed by a grid having a narrow width, and therefore, there is a problem that the heating efficiency of the air flow heating means is low and the far infrared ray emission efficiency is low. This is because the area of the end face becomes relatively small because a grid having a small width and an air vent having a large opening area are formed so that the far infrared ray emitter does not obstruct the flow of the air current. Further, since most of the heat emitted from the airflow heating means is directly emitted to the outside from the ventilation opening, the efficiency of heating the far infrared ray emitter of the airflow heating means is also low.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a hair dryer which can efficiently generate far infrared rays and can dry wet hair satisfactorily.

[ means for solving problems ]

The hair dryer of the present invention comprises: a body having an air intake part and an air discharge part; an air blowing mechanism provided in the vicinity of the air intake portion in the main body; an air flow heating mechanism which is arranged in the main body and is arranged at the downstream side of the air supply mechanism; and a far infrared ray emitter attached to the exhaust portion of the main body and allowing an air flow to pass therethrough, wherein the far infrared ray emitter has a shape having a central axis substantially parallel to the air flow passing through the far infrared ray emitter, the far infrared ray emitter has an annular main body portion and a vent portion provided inside the annular main body portion, and an end portion of the air flow heating means on the exhaust portion side is opposed to an end surface of the annular main body portion on the upstream side, so that the end surface of the annular main body portion on the upstream side is heated by the heat radiated from the air flow heating means.

In the hair dryer according to the present invention, the air flow heating mechanism includes a heater that is an electric heating wire having a double coil structure, and that has a structure in which a primary coil is wound as a secondary coil, and a thickness of the annular body portion in a direction orthogonal to the central axis is larger than an outer diameter of the primary coil.

In the hair dryer according to the present invention, the secondary winding is wound by one amount at the end of the heater on the exhaust side so as to overlap the annular main body in the view of the central axis direction.

In the hair dryer according to the present invention, the secondary winding is wound by one winding amount in the end portion on the exhaust side of the heater so as to completely overlap the annular body portion in the view of the central axis direction.

[ Effect of the invention ]

The hair dryer according to the present invention is configured as described above, and the far infrared ray emitter is efficiently heated to emit far infrared rays by receiving heat emitted from the airflow heating means through the upstream end surface of the annular body of the far infrared ray emitter.

Further, the airflow heating mechanism includes a heater that is a double-coil electric heating wire having a structure in which a primary coil is wound to form a secondary coil, and a thickness in a direction orthogonal to the central axis of the annular main body is larger than an outer diameter of the primary coil, whereby the annular main body can efficiently receive heat radiated from the heater.

Further, one winding amount of the secondary coil in the end portion on the exhaust side of the heater overlaps the annular body portion in the view point of the central axis direction, whereby the annular body portion can receive heat radiated from the heater more efficiently.

Further, one winding amount of the secondary coil in the end portion on the exhaust gas side of the heater is completely overlapped with the annular body portion in the view point of the central axis direction, whereby the annular body portion can receive the heat radiated from the heater more efficiently.

Drawings

FIG. 1 is a right side view of a hair dryer showing one embodiment of the present invention;

figure 2 is a front view of the blower;

FIG. 3 is a schematic explanatory view of the inside of the blower;

fig. 4 is a perspective view of a far infrared ray emitter of the hair dryer;

fig. 5 is an external view of a heater 17 constituting an air flow heating mechanism of the hair dryer, wherein (a) is an electric heating wire 17a before being wound into a coil, (b) is a primary coil 17b, and (c) is a secondary coil 17 c;

FIG. 6 is an explanatory view showing an ideal overlap between the far infrared ray emitter and the air flow heating means in the hair dryer, wherein (a) is a view seen from the air blowing means side, and (b) is a view seen from the air discharge means side;

fig. 7 is an explanatory view showing the superposition of the far infrared ray emitter and the air flow heating means in the actual hair dryer, wherein (a) is a view seen from the air blowing means side, and (b) is a view seen from the air discharge means side.

Detailed Description

The following describes an embodiment of the present invention with reference to fig. 1 to 7. In the following description, the top, bottom, front, and rear are defined with reference to fig. 1 and 2. That is, the top and bottom of fig. 1 and 2 are top and bottom, and the left side of fig. 1 is front and the right side is rear. The front side of fig. 2 is the front side. 1 is a hair dryer of the present invention. The hair dryer 1 has a main body 2 and a far infrared ray radiation part 3 fixed to the front of the main body 2. The main body 2 includes a synthetic resin main body 4, an air blowing mechanism 5, and an air flow heating mechanism 6. The main body 4 integrally includes an airflow generating portion 7, an airflow heating portion 8, and a gripping portion 9.

Air intake units 10 are formed on the left and right sides of the airflow generating unit 7, and the air blowing mechanism 5 is provided in the airflow generating unit 7 near these air intake units 10. The blower mechanism 5 includes a motor 11, a fan 12 rotated by the motor 11, and a wind guide frame 13 provided to surround the fan 12. In the present embodiment, the fan 12 is a sirocco fan (sirocco fan), but may be an axial flow fan.

The airflow heating section 8 is formed in a tubular shape in front of the airflow generating section 7, integrated with the airflow generating section 7, and having an exhaust section 14 in front. The airflow heating section 8 communicates with the airflow generating section 7. That is, the air flow flowing in from the air intake unit 10 can be discharged from the air discharge unit 14. An air duct 15 having both front and rear ends open is provided inside the airflow heating section 8. Further, the airflow heating mechanism 6 is provided in the air duct 15. The airflow heating means 6 includes a support frame 16 made of a heat-resistant and insulating material, and a heater 17 wound around the support frame 16. The heater 17 has a so-called double coil structure in which an electric heating wire 17a is wound into a coil-shaped primary coil 17b, and further wound into the support frame 16 to form a secondary coil 17 c. The primary coil 17b of the heater 17 has an outer diameter D. The central axis of the air duct 15 (i.e., the direction of the air flow) extends forward and backward coaxially with the winding center of the secondary coil 17c and the central axis X of the far infrared ray emitter 22 described later.

The grip 9 is configured to: the airflow generating part 7 is integrated with the airflow generating part 7 and has a rod shape below the airflow generating part 7. The grip 9 has a main switch operation unit 18 and a selector switch operation unit 19 on the front side thereof. The main switch operation section 18 is an operation section for switching "strong wind", "weak wind", and "stop". The switch operation unit 19 is an operation unit for switching between "warm air" and "cold air". A power cord 20 is drawn out from the lower end of the grip 9.

The far infrared ray radiating section 3 is fixed in front of the exhaust section 14 of the airflow heating section 8 constituting the main body 4. The far-infrared radiation section 3 has a short cylindrical frame 21 with both open front and rear ends, and a plurality of (3 in the present embodiment) far-infrared radiation bodies 22 fixed to the inside of the frame 21. These far infrared ray emitters 22 are made of ceramics or the like that emit far infrared rays when heated. All of the far infrared emitters 22 have the same shape and are in the shape of a short cylinder having a virtual center axis X. In addition, the central axis X is in the front-rear direction in a state where the far-infrared radiation unit 3 is fixed to the main body 2. The far infrared ray emitters 22 are integrally formed by having: a short cylindrical annular body portion 23, a plurality of (4 in the present embodiment) ribs 24 extending from the inner surface of the annular body portion 23 toward the center, and an inner cylinder portion 25 provided at the inner end of the ribs 24. The far infrared ray emitter 22 is provided with a plurality of (4 positions in the present embodiment) vent holes 26 and 27, the vent holes 26 are defined by the annular main body 23, the ribs 24, and the inner tube 25, and the vent holes 27 are formed in the center of the inner tube 25. These vent

portions

26, 27 extend parallel to the central axis X. That is, the air flow generated by the air blowing mechanism 5 can pass through the

respective vent portions

26 and 27. The respective far infrared ray emitters 22 (22 a, 22b, and 22c from the front) are overlapped so as to be in contact with each other in a heat conductive manner in the direction of the central axis X, and the respective ribs 24 are aligned with each other. In a state where the far infrared radiation unit 3 is fixed to the main body 2, as shown in fig. 6 and 7, the ribs 24 of the far infrared radiation body 22 are overlapped with the support frame 16 in a view along the central axis X. On the contrary, in a portion where the support frame 16 is not provided, the rib 24 is not provided. In other words, the support frame 16 is disposed behind all the ribs 24. In the present embodiment, both the support frame 16 and the rib 24 are cross-shaped in the view of the central axis X, but it is important to completely overlap the support frame 16 and the rib 24, and thus, for example, the support frame 16 and the rib 24 may be formed in a shape of "one-dot". Further, since the inner tube portion 25 (and the vent portion 27) is provided so that a finger does not enter from the vent portion 26, the inner tube portion 25 is not necessarily required as long as the vent portion 26 is sufficiently narrow to prevent a finger from entering.

The annular body portion 23 is formed thick in a direction perpendicular to the central axis X, and has a thickness T greater than the outer diameter D of the primary coil 17b of the heater 17 (T > D) and about 1/3 of the overall radius R (3T ≈ R). The annular body 23 itself is not provided with a vent hole. In this example, the ratio of the solid portion (the total of the annular main body 23, the rib 24, and the inner cylinder 25) to the hollow portion (the total of the vent portions 26 and 27) in the far infrared ray emitter 22 is about 7: 3. the proportion of the annular main body 23 in the solid portion of the far infrared emitter 22 is about 80%.

In a state where the far infrared radiation unit 3 is fixed to the front of the exhaust unit 14, the rear surface 23a, which is the upstream end surface of the annular body 23 of the far infrared radiation body 22c, is located close to and faces the end 17d of the heater 17. Here, the end portion 17d of the heater 17 refers to one turn of the end portion (that is, the tip end portion) of the secondary coil 17c of the heater 17 on the exhaust portion 14 side. As shown in fig. 6, it is preferable that the secondary coil 17c is wound so as to draw a smooth spiral and the end portion 17d of the heater 17 completely overlaps the annular main body portion 23 in a front view, but in practice, as shown in fig. 7, the secondary coil 17c is often wound so as to draw an angular spiral and the end portion 17d of the heater 17 is exposed from the annular main body portion 23 in a front view. Even in this case, it is sufficient if the end portion 17d of the heater 17 overlaps the annular body portion 23 in a front view. Further, heat (infrared rays) radiated from a portion other than the end portion 17d of the heater 17 may be received on the rear surface 23a of the annular body portion 23.

Next, the operation of the present embodiment will be described. In addition, the explanation of the case of blowing hair with cold wind is omitted. First, a user connects a plug, not shown, provided at the tip of the power cord 20 to an ac power supply, also not shown. Then, the main switch operation unit 18 is operated to select "strong wind" or "weak wind" in a state where the grip unit 9 is gripped and "warm wind" is selected by the change-over switch operation unit 19. By operating in this manner, the motor 11 is operated to rotate the fan 12, and the air flow sucked from the left and right air suction units 10 is guided by the air guide frame 13 and sent into the air guide duct 15 in front. At the same time, the heater 17 of the airflow heating section 8 is energized and generates heat. When the air flow passes through the air duct 15, the air flow receives heat from the heater 17 and becomes warm air. The warm air is discharged from the air discharge unit 14 to the front of the hair dryer 1 through the

vent units

26 and 27 of the far infrared ray emitter 22. At this time, since all the ribs 24 of the far infrared ray radiator 22 overlap the support frame 16 in the view of the central axis X direction, the loss and the turbulent flow of the air flow discharged from the air duct 15 to the outside of the hair dryer 1 through the

vent parts

26 and 27 can be suppressed, and the warm air can be efficiently sent out. The hair is dried by blowing the warm air to the wet hair.

Further, as described above, since the rear surface 23a of the annular main body 23 of the far infrared ray emitter 22c is opposed to and in proximity to the end 17d of the heater 17, the far infrared ray emitter 22 is heated by heat (infrared rays) emitted from the heater 17, particularly the end 17 d. Specifically, the heat (infrared rays) emitted from the heater 17, particularly the end portion 17d, is mainly received by the rear surface 23a of the annular body portion 23 of the far infrared ray emitter 22. Further, as described above, since the annular main body portion 23 itself is not provided with the vent hole, all of the heat (infrared rays) radiated from the heater 17 toward the rear surface 23a is received by the rear surface 23a and does not pass through the annular main body portion 23. As described above, since the thickness T of the annular main body 23 is larger than the outer diameter D of the primary coil 17b of the heater 17, the heat (infrared rays) radiated from the end 17D of the heater 17 can be efficiently received in a wide range of the rear surface 23 a. The heat received by the far infrared ray emitter 22c at the rearmost side is transmitted to the far infrared ray emitter 22a through the far infrared ray emitter 22b at the front side. The entire far infrared ray emitter 22 is not only directly heated by the heat (infrared rays) emitted from the heater 17, but also indirectly heated by the warm air heated by the heater 17 through the

vent portions

26 and 27. This allows the far infrared ray emitter 22 to be heated as a whole. In addition, the temperature of the warm wind is lowered by applying heat to the far infrared ray emitter 22 through the

vent portions

26 and 27.

Thus, when the far infrared ray emitter 22 is heated, the far infrared ray can be emitted from the far infrared ray emitter 22. And, the warm wind is blown to the hair, and the far infrared rays are irradiated to the hair, thereby drying the wet hair. In addition, the far infrared rays are irradiated to the hair, thereby improving the drying efficiency of the wet hair. Therefore, even if the temperature of the warm air is lowered or the volume of the warm air is reduced, the hair can be sufficiently dried. That is, even if the heater 17 or the motor 11 is set to consume less power than those of a general hair dryer, the hair can be sufficiently dried.

[ Table 1]

Table 1 shows a comparison between the product of the present invention and a product sold by the applicant in the past. The temperature and drying time for hair were carried out under the following conditions. The dry object was a hair strand of human hair of the same weight. These hair bundles were immersed in warm water adjusted to 40 ℃ for 3 minutes, and then adjusted so that the weights of the hair bundles containing water were the same, and the measurements were performed. The temperature of the hair was measured as follows: the temperature after 6 minutes was measured by blowing warm air (and far infrared rays) from a distance of 5cm while 4g of water was contained in 10g of hair strand of human hair. The drying time was determined as follows: the time until the total weight of the hair bundle of human hair and water became 30g, that is, the time until all the water was evaporated was measured by adding 10g of water to 30g of hair bundle of human hair and blowing warm air (and far infrared rays) from a distance of 10 cm. In addition, the denaturation temperature of the proteins constituting the hair was 60 ℃. From these results, it was found that the drying time was increased even when the temperature of the hair was kept at 60 ℃ or lower, which is the denaturation temperature of the protein.

In this way, the temperature of the warm air can be lowered, so that the moisture content of the hair itself can be maintained while suppressing the denaturation of the protein constituting the hair. Further, since the volume of warm air can be reduced, damage to the hair surface and the generation of static electricity due to the friction between hairs can be suppressed. Further, energy saving can be achieved by suppressing the power consumption of the heater 17 or the motor 11. Further, even if the heater 17 is a heater with low power consumption, as described above, the far infrared ray emitter 22 can efficiently receive heat (infrared rays) emitted from the heater 17, and thus the far infrared ray emitter 22 can be sufficiently heated to sufficiently generate far infrared rays. Further, since the amount of warm air can be small, the opening area of the

vent portions

26 and 27 can be reduced (that is, the volume of the solid portion in the far infrared ray emitter 22 can be increased), and thus far infrared rays can be more efficiently emitted. In particular, in this example, the solid matter occupies about 70%, more preferably about 80% of the space occupied by the far infrared ray emitter 22, and the annular main body 23 mainly receives heat (infrared rays) emitted from the heater 17, whereby far infrared rays can be more efficiently emitted.

As described above, the hair dryer of the present invention includes:

a main body 4 having an air intake part 10 and an air discharge part 14;

a blowing mechanism 5 provided in the vicinity of the air intake part 10 in the airflow generating part 7 of the main body 4;

an air flow heating mechanism 6 provided in the air flow heating section 8 of the main body 4 and downstream of the air blowing mechanism 5; and

a far infrared ray emitter 22 fixed to the exhaust unit 14 of the airflow heating unit 8 of the main body 4 and through which an airflow passes, in the hair dryer 1, the far infrared ray emitter 22 has a short cylindrical shape having a central axis X, the central axis X is substantially parallel to the air flow passing through the far infrared ray emitter 22, the far infrared ray emitter 22 has an annular main body 23 and ventilation holes 26 and 27 provided inside the annular main body 23, and the end 17d on the side of the exhaust part 14 of the heater 17 constituting the airflow heating mechanism 6 is opposed to the rear surface 23a, the rear surface 23a, which is the upstream end surface of the annular body 23, is heated by the heat radiated from the airflow heating means 6, whereby the far infrared radiation body 22 can be efficiently heated and the far infrared rays can be radiated.

Further, according to the present invention, the airflow heating mechanism 6 includes the heater 17, the heater 17 is a double-coil electric heating wire 17a, and the secondary coil 17c is formed by winding the primary coil 17b around the central axis X, and the thickness T in the direction orthogonal to the central axis X of the annular main body portion 23 is larger than the outer diameter D of the primary coil 17b, whereby the annular main body portion 23 can efficiently receive heat radiated from the heater 17.

In the present invention, one winding amount of the secondary coil 17c (that is, the end portion 17d) at the end portion of the heater 17 on the exhaust portion 14 side overlaps the annular body portion 23 in the view of the central axis X direction, whereby the annular body portion 23 can receive the heat radiated from the heater 17 more efficiently.

Further, the end portion 17d of the heater 17 is completely overlapped with the annular body portion 23 in the view of the central axis X direction, whereby the annular body portion 23 can receive the heat radiated from the heater 17 more efficiently.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, a heater having a double coil structure is used as the heater, but a heater other than this may be used. In the above embodiment, ceramic is used as the material of the far infrared ray emitter, but any material other than ceramic may be used as long as it can emit far infrared rays by heating. In the above embodiment, a plurality of far infrared emitters are arranged in an axial direction, but a single far infrared emitter may be used. In the above embodiment, the far infrared ray emitter is formed in a short cylindrical shape, but may be formed in a shape that can substantially define the central axis, for example, in an elliptical cylindrical shape, a polygonal cylindrical shape, a truncated cone shape, or a three-dimensional shape different in shape from one end to the other end. In the above embodiment, the vent hole portion is provided parallel to the central axis, but the vent hole portion may be provided spirally with respect to the central axis. In this case, although the blown air flow may become a vortex, the center thereof may be parallel to the central axis.

Claims

1. A hair dryer, its characterized in that:

the hair dryer is provided with:

a body having an air intake part and an air discharge part;

an air blowing mechanism provided in the vicinity of the air intake portion in the main body;

an air flow heating mechanism which is arranged in the main body and is arranged at the downstream side of the air supply mechanism; and

a far infrared ray emitter mounted on the exhaust part of the body and allowing airflow to pass through,

in the hair dryer, the far infrared ray emitter has a shape having a central axis substantially parallel to an air flow passing through the far infrared ray emitter, the far infrared ray emitter has an annular main body portion and a vent portion provided inside the annular main body portion, and an end portion of the air flow heating means on the exhaust side is opposed to an end surface of the annular main body portion on the upstream side so as to heat the end surface of the annular main body portion on the upstream side by radiation heat from the air flow heating means.

2. The hair dryer of claim 1, wherein:

the airflow heating mechanism includes a heater that is an electric heating wire having a double-coil structure, and that has a structure in which a primary coil is wound as a secondary coil, and a thickness of the annular body portion in a direction orthogonal to the central axis is larger than an outer diameter of the primary coil.

3. The hair dryer of claim 2, wherein:

one winding amount of the secondary coil in the end portion on the exhaust portion side of the heater overlaps the annular body portion in the view of the central axis direction.

4. The hair dryer of claim 3, wherein:

one winding amount of the secondary coil in the end portion on the exhaust portion side of the heater completely overlaps with the annular body portion in the view of the central axis direction.