JP2012019865A - Hair dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair dryer including a step having straightening operation inside a nozzle.SOLUTION: The hair dryer 10 includes: a body case 13 including a heat source, a fan, and a motor inside, and a vent hole at one end and an inlet 16 at the other end; and a nozzle 25. In the hair dryer 10, the nozzle 25 includes a cavity inside and one opening is set to be an elliptic blowout opening 29 and the other is set to be a circular connecting port connected to the vent hole of the body case 13. A long-diameter portion of the elliptical blowout opening 29 is formed while becoming larger than a diameter of the circular vent hole and curvedly widening from the vent hole toward the blowout opening 29. A short-diameter portion of the elliptical blowout opening 29 is formed while becoming smaller than the diameter of the circular vent hole and curvedly narrowing from the vent hole toward the blowout opening 29. An internal surface of a cavity is divided into at least two step part areas 31 at a prescribed position in a longitudinal direction of the cavity, and the step 32 is formed in a boundary portion of the step part areas.

Description

  The present invention relates to a hair dryer, and more particularly to a hair dryer capable of adjusting the flow direction of an irregularly turbulent wind blown out of the hair dryer and rectifying and blowing it out.

  The hair dryer performs hair styling with warm air heated by a heater provided in the hair dryer, but the wind generated from the fan provided in the conventional hair dryer is irregularly disturbed. Therefore, there is a problem that it is difficult for the user to properly perform hair styling and the like if used as it is. For this reason, there is known a hair dryer in which irregular winds generated from a fan of the hair dryer are arranged and blown out as rectification.

  For example, Patent Literature 1 below discloses a hair dryer that suppresses the disturbance of wind direction. The hair dryer shown in the following Patent Document 1 is a hair dryer having a fan, a motor, a rectifier blade, and a heater inside a housing having a blower outlet and a suction port. The inner nozzle is formed of an inclined portion that is inclined with respect to the nozzle central axis from the upstream side toward the downstream side, and a parallel portion that is formed substantially parallel to the cross-section nozzle central axis on the downstream side of the inclined portion. . According to the hair dryer shown in the following Patent Document 1, the air is blown from the inner nozzle and the outer nozzle respectively. At this time, the hot air is squeezed by narrowing the air flow of the hot air without causing turbulence in the wind direction at the inner nozzle. It is said that the wind speed can be improved while securing the air volume of air, and the air volume of hot air can be further secured by blowing air from the outer nozzle.

  Moreover, the following patent document 2 discloses a hair dryer that can provide a rectifying effect. The hair dryer of the following Patent Document 2 has a suction port, and a discharge nozzle that is attached to the outlet of the hair dryer that includes a heater, a fan, and a motor that drives the fan. A plurality of partition walls are provided, and the partition walls include at least a pair of partition walls curved toward the inside of the air discharge passage, and an opening area partitioned by the partition walls is defined by the nozzle outer wall and one partition wall. The area partitioned between the plurality of partition walls is made larger than the sectioned area. According to the hair dryer shown in the following Patent Document 2, it is possible to cause an air flow change in the wind flowing into the discharge nozzle from the blowout port, rectify the wind discharged from the discharge nozzle, and apply it to a desired portion of the hair. In particular, since the partition wall is curved inward, the amount of the blown wind comes into contact with the partition wall is increased, so that the rectifying effect is improved.

Japanese Laid-Open Patent Publication No. 2001-204536 JP 2009-195264 A

  However, in the hair dryer disclosed in Patent Document 1 described above, the inner nozzle is provided to increase the momentum of the wind blown from the inner nozzle, but the inner nozzle is configured in a flat plate shape. A sufficient rectifying effect for adjusting the wind is not obtained. In addition, in the hair dryer disclosed in Patent Document 2, a rectifying effect is recognized, but since the structure is complicated by forming a partition wall inside the discharge nozzle, cleaning or the like becomes difficult. Moreover, there also existed the subject that manufacturing cost started.

  Therefore, as a result of various studies to solve the above problems, the inventor of the present application forms a step having a rectifying action inside the nozzle attached to the body of the hair dryer, and by attaching this nozzle. It has been found that the flow of warm air that is blown out passes through the stepped portion, the flow is adjusted, and the user can easily set the hair, and the present invention has been completed.

  That is, an object of the present invention is to provide a hair dryer capable of adjusting the flow of hot air blown out by providing a step inside a nozzle attached to the body of the hair dryer.

  In order to achieve the above object, a hair dryer according to claim 1 of the present invention is provided with a heat source, a fan, and a motor for driving the fan inside, and has a vent hole at one end and an intake port at the other end. A hair dryer having a main body case and a nozzle attached to the main body case, wherein the nozzle has a hollow inside, one of which is formed in an elliptical shape and the other is a vent hole of the main body case The elliptical blowout port has a long-diameter portion that is larger than the diameter of the circular vent port. It is formed so as to expand in a curved shape as it goes to, and the short-diameter portion of the elliptical outlet is smaller than the diameter of the circular vent from the vent. The inner surface of the cavity is divided into at least two step regions at a predetermined position in the longitudinal direction of the cavity, and is formed to be narrowed in a curved shape toward the outlet. A step is formed at the boundary portion.

  The hair dryer according to claim 2 of the present invention is the hair dryer according to claim 1, wherein the nozzle is detachably attached to the main body case.

  Moreover, the hair dryer which concerns on Claim 3 of this invention is the hair dryer of Claim 1. Each length of the said step part area | region is lengthened as it goes to the said blower outlet.

  Moreover, the hair dryer which concerns on Claim 4 of this invention is the hair dryer of Claim 1, The said level | step difference is cyclically | annularly formed in the inner surface of the said cylindrical body, It is characterized by the above-mentioned.

  The hair dryer according to claim 5 of the present invention is characterized in that, in the hair dryer according to claim 4, the annularly formed step is formed in parallel with the outlet.

  Moreover, the hair dryer which concerns on Claim 6 of this invention is the hair dryer in any one of Claims 1-5. WHEREIN: The surface which the outer surface of the said nozzle opposes at least 1 along the longitudinal direction of the said nozzle. Each of the grooves is formed.

  In the hair dryer according to the first aspect of the present invention, the inner surface of the cavity of the nozzle is divided into at least two stepped regions, and a step is formed at the boundary portion thereof. Further, the nozzle is formed for each of these step regions while changing the cross-sectional area and the cross-sectional shape in the cavity from the circular connection port toward the elliptical discharge port. Therefore, the inner diameter and the shape of the cavity change every time it passes through the step formed for each boundary of the step region. This change changes so that it extends toward the air outlet at the long diameter portion formed in the elliptical shape of the air outlet, and becomes narrower toward the air outlet at the short diameter portion formed in the elliptical shape of the air outlet. To change. Therefore, the wind passing through the nozzle changes in the wind speed and the wind pressure while passing through the outlet from the connection port.

  As a result, according to the hair dryer according to claim 1 of the present invention, the irregular wind generated from the fan is changed in the wind speed and the wind pressure each time it passes through the step formed in the nozzle. Irregular wind turbulence can be corrected and blown out as rectification. In addition, according to the hair dryer according to claim 1 of the present invention, since the wind pressure and wind speed of the blown-out wind can be changed, a wind having strong and weak waves at a constant cycle such as a wave is obtained, Stimulation of fine movement can be given to the scalp and it can contribute to maintaining the health of the scalp and hair.

  According to the hair dryer according to claim 2 of the present invention, since the nozzle is detachably attached to the main body case, cleaning and replacement are facilitated.

  Moreover, according to the hair dryer which concerns on Claim 3 of this invention, since the length of the step part area | region by the side of the connection port of a nozzle is short and the length of the step part area | region by the side of a blower outlet is formed long, It is possible to gradually adjust the wind pressure and wind speed of the wind to be blown, to efficiently regulate the flow of the blown wind and to blow out the wind at a stable wind speed.

  Moreover, according to the hair dryer which concerns on Claim 4 of this invention, since the level | step difference is formed in cyclic | annular form, since a wind pressure and a wind speed can be changed with respect to the whole wind which passes a nozzle inner surface, more It can efficiently rectify wind turbulence and rectify.

  Moreover, according to the hair dryer which concerns on Claim 5 of this invention, since the level | step difference is formed in parallel with the blower outlet, the blown-out wind can be rectified according to the direction of a blower outlet.

  Further, in the hair dryer according to claim 6 of the present invention, the groove is formed on the outer surface of the nozzle, so that air is drawn in by the venturi effect caused by the blown wind, The air can be mixed along the groove. Therefore, according to the hair dryer which concerns on Claim 6 of this invention, temperature can be adjusted by mixing external air with the warm air which blows off, and damage to a scalp and a head hair is suppressed with high temperature warm air. be able to.

It is a perspective view of one embodiment of a hair dryer concerning the present invention. It is sectional drawing in the II-II line of the hair dryer of FIG. It is an expansion perspective view of a nozzle. 4A is a front view of the nozzle, FIG. 4B is a side view of the nozzle, FIG. 4C is a side view of the other side of the nozzle, and FIG. 4D is a plan view of the nozzle. 5A is a cross-sectional view taken along line VA-VA in FIG. 4B, and FIG. 5B is a cross-sectional view taken along line VB-VB in FIG. 4B. 6A is a schematic diagram corresponding to FIG. 5A showing the flow state of hot air passing through the nozzle, and FIG. 6B is a schematic diagram corresponding to FIG. 5B showing the flow state of hot air passing through the nozzle. is there. It is the schematic diagram which showed the flow state of the rectified warm air blown off. It is the schematic diagram which showed the flow state with the external air mixed with the rectified warm air blown off.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a hair dryer for embodying the technical idea of the present invention, and is not intended to specify the present invention for this hair dryer. The same applies to other embodiments included in the scope.
[Embodiment]
As shown in FIG. 1, a hair dryer 10 according to the embodiment includes a cylindrical main body 11 and a handle 12 attached near the rear end of the lower surface of the main body 11, and warm air from the hair dryer 10 is sent out. A nozzle 25 is attached to the portion to be processed. The handle 12 is pivotally supported with a connecting portion protruding from the lower surface of the main body 11 as a fulcrum, and is attached to the main body 11 so as to be foldable. The handle 12 is provided with a power switch 14.

  A main body case 13 is attached to the main body 11 of the hair dryer 10, and the main body case 13 includes a front portion 13 a and a rear portion 13 b, and a rear cover 15 is attached to the rear portion 13 b of the main body case 13. A nozzle 25 is attached to the front portion 13 a of the case 13. The front part 13a, the rear part 13b, and the nozzle 25 of the main body case 13 are formed of a molded product of heat-resistant transparent plastic such as polycarbonate or heat-resistant ABS resin. The front portion 13a of the main body case 13 has a substantially cylindrical shape whose longitudinal section is tapered forward, and the rear portion 13b of the main body case 13 has a short cylindrical shape and is abutted and joined to the front portion 13a. Yes.

  A rear cover 15 is attached to the rear end of the rear portion 13b of the main body case 13, and the rear cover 15 is formed with an intake port 16 provided with a plurality of holes for introducing outside air. A metal plate having holes is formed in a circular dome shape. A vent hole 21 is formed at the front end of the front portion 13 a of the main body case 13, and the vent hole 21 serves as a hot air outlet from the main body case 13. Note that. A nozzle 25 is rotatably attached to the vent hole 21. A detailed configuration of the nozzle 25 will be described later.

  Inside the main body case 13 of the main body 11, a hot air generating chamber 17 is arranged as shown in FIG. The hot air generating chamber 17 is formed in a cylindrical shape, and an insulating outer cylinder 17b is disposed in the outer wall 17a, and a blower grill (illustrated) is provided in the vent 21 portion for blowing hot air to the outside of the tip of the hot air generating chamber 17. (Omitted) is attached. A heater 18 such as a nichrome wire is accommodated inside the insulating outer cylinder 17 b, a motor 19 is accommodated behind the heater 18, and a blower chamber 20 is further provided thereafter, and is connected to the motor 19. There is provided a fan 20a for sending wind. In the air blowing chamber 20, the fan 20 a is rotated by the motor 19, and the outside air taken in from the intake port 16 of the rear cover 15 is sent to the hot air generating chamber 17.

  As shown in FIG. 2, a plurality of heat radiating plates 22 are provided in the hot air generation chamber 17 so as to be arranged radially in the axial direction of the main body 11 from the insulating cylinder 23 housing the motor 19 to the front part, Nichrome wire or the like (not shown) is wound so as to connect the outer edges of the heat radiating plates 22. The wind of the fan 20a in the air blowing chamber 20 connected to the motor 19 is sent to the front nozzle 25 through the heat sink 22.

  Next, with reference to FIGS. 3-5, the detailed structure of the nozzle 25 of the hair dryer 10 concerning embodiment is demonstrated. As shown in FIGS. 3 to 5, the nozzle 25 of the present embodiment has a hollow 25 e inside, and is formed of a cylindrical body composed of an upper surface 25 a, a lower surface 25 b, and both side surfaces 25 c and 25 d. A blowout port 29 through which hot air is blown out is formed in an elliptical shape, and a circular connection port 30 connected to the vent hole 21 of the main body case 13 is formed on the other side. A connection portion 30 a that contacts the main body case 13 is formed around the connection port 30.

  At this time, the shape of the nozzle 25 extends in a curved shape from the vent hole 21 toward the blowout port 29 so that the long diameter portion 29 a of the elliptical blowout port 29 is larger than the diameter of the circular vent port 21. The short diameter portion 29b of the elliptical air outlet 29 is formed while being narrowed in a curved shape from the air vent 21 toward the air outlet 29 so as to be smaller than the diameter of the circular air vent 21. Has been.

  Further, the inner surface 26 of the nozzle 25 is divided into a plurality of stepped regions 31 at predetermined positions in the longitudinal direction of the cavity 25e, and a step 32 is formed at the boundary between the adjacent stepped regions 31. The step 32 is formed in an annular shape on the inner surface 26 of the nozzle 25 and is formed so as to be substantially parallel to the outlet 29. Note that at least one step region 31 may be formed, but in the present embodiment, an example in which six step regions 31 are formed will be described.

  Further, on the outer surface 27 side of both side surfaces 25c and 25d of the nozzle 25, groove portions 28 each including a plurality of grooves are formed along the longitudinal direction of the nozzle 25, that is, the direction in which the warm air is blown out. .

  Next, the flow of hot air when the nozzle 25 of the embodiment is used will be described with reference to FIGS.

  First, the wind generated by the rotation of the fan 20 a in the main body case 13 is heated by the heater 18 to become warm air 33 and travels toward the nozzle 25. At this time, the hot air 33 is irregular and disturbed. Thereafter, when the hot air 33 passes through the nozzle 25, it passes through the stepped region 31 formed on the inner surface 26 of the cavity 25 e of the nozzle 25. At this time, the step 32 is formed at the boundary portion between the adjacent stepped regions 31, and the shape of the nozzle 25 is formed as described above. The cross-sectional shape is different.

  And the change of this cross-sectional area and cross-sectional shape occurs for every step part area | region 31 formed in multiple numbers. The change in the cross-sectional area and the cross-sectional shape changes so as to expand toward the blowout port 29 in the long diameter portion 29a formed in the elliptical shape of the blowout port 29 (see FIGS. 5A and 6A). The short diameter portion 29b formed in a shape changes so as to become narrower toward the outlet 29 (see FIGS. 5B and 6B).

  Thus, as shown in FIGS. 6 and 7, the warm air 33a passing through the formed nozzle 25 is changed in wind speed and wind pressure for each stepped region 31, and this change occurs a plurality of times. The direction in which the hot air 33 that has been irregularly disturbed flows is adjusted, and is blown out from the air outlet 29 as rectified hot air 34. In particular, since the major diameter portion 29a and the minor diameter portion 29b of the elliptical outlet 29 can greatly change the wind speed and the wind pressure of the passing hot air 33a, a higher rectifying action can be obtained.

  Further, since the step 32 is formed in an annular shape, the wind pressure and the wind speed can be changed with respect to the entire warm air 33a passing through the inner surface 26 of the nozzle 25, so that the warm air is more efficiently disturbed. It can be straightened and rectified.

  Moreover, since the level | step difference 32 is formed in parallel with the blowing outlet 29, the warm air 33a which passes the nozzle 25 can be straightened according to the direction of a blowing outlet.

  Further, groove portions 28 are formed on both side surfaces 25c and 25d of the outer surface 27 of the nozzle 25, respectively. Since the groove 28 is formed, the venturi effect is strongly generated by the rectified hot air 33a blown out from the blowout port 29, and therefore, a force is generated that the hot air 33a draws the outside air 35 around the nozzle 25. The outside air 35 is mixed with the warm air 33a. When the outside air 35 is mixed with the warm air 33a, it flows along the groove 28, so that the flowing direction of the outside air 35 is also rectified and the wind speed is increased, so that a large amount of the outside air 35 is mixed efficiently. (See FIG. 8). Therefore, in the hair dryer 10 according to the embodiment, the flowing direction of the hot air 33a that has passed through the nozzle 25 can be adjusted and blown out as the rectified hot air 34, and the outside air 35 is supplied to the rectified hot air 34 that is blown out. Can be mixed to adjust the temperature.

  In addition, although the hair dryer of embodiment demonstrated the electrothermal hair dryer using a nichrome wire as an example, it is not restricted to this, It can apply also to the heating system hair dryer by another heat source.

  In addition to the above-described configuration, the hair dryer according to the embodiment may include a mechanism for generating, for example, silver ions or negative ions having a sterilizing action.

  Moreover, although the case where the warm air is blown out has been described in the present embodiment, the cold air can be rectified and blown out.

DESCRIPTION OF SYMBOLS 10: Hair dryer 11: Main body 12: Handle 13: Main body case 13a: Front part 13b: Rear part 14: Power switch 15: Rear cover 16: Inlet 17: Hot air generating chamber 17a: Outer wall 17b: Insulating outer cylinder 18: Heater 19: Motor 20: Blower chamber 20a: Fan 21: Vent 22: Heat sink 23: Insulating tube 25: Nozzle 25a: Upper surface 25b: Lower surface 25c, 25d: Side surface 25e: Cavity 26: Inner surface 27: Outer surface 28: Groove 29: Air outlet 29a: Long diameter portion 29b: Short diameter portion 30: Connection port 30a: Connection portion 31: Step portion region 32: Step portion 33, 33a: Hot air 34: Rectified hot air 35: Outside air

Claims (6)

A hair dryer having a heat source, a fan, and a motor for driving the fan inside, a body case having a vent at one end and an air inlet at the other end, and a nozzle attached to the body case, ,
The nozzle has a cavity inside, one of which is an opening that is formed into an elliptical shape and the other is a circular connection port that is connected to the vent of the main body case,
The long-diameter portion of the elliptical outlet is formed to expand in a curved shape from the vent toward the outlet, so as to be larger than the diameter of the circular vent.
The short-diameter portion of the elliptical outlet is formed to be narrowed in a curved shape as it goes from the vent to the outlet, so as to be smaller than the diameter of the circular vent.
An inner surface of the cavity is divided into at least two step regions at a predetermined position in the longitudinal direction of the cavity;
A hair dryer, wherein a step is formed at a boundary portion of the step region.   The hair dryer according to claim 1, wherein the nozzle is detachably attached to the main body case.   The length of each said step part area | region is lengthened as it goes to the said blower outlet, The hair dryer of Claim 1 characterized by the above-mentioned.   The hair dryer according to claim 1, wherein the step is formed in an annular shape on an inner surface of the cylindrical body.   The hair dryer according to claim 4, wherein the annularly formed step is formed so as to be parallel to the outlet.   The hair dryer according to any one of claims 1 to 5, wherein at least one groove is formed along the longitudinal direction of the nozzle on the opposing surface of the outer surface of the nozzle.

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