JP4511429B2 - Portable hair dryer - Google Patents

Description

  The present invention relates to a cordless portable hair dryer, and more particularly to a portable hair dryer that uses gas as a heat source and is excellent in design and easy to carry.

  As a heat source for the hair dryer, a hair dryer using gas combustion of liquefied petroleum gas such as butane gas filled in a cylinder instead of an electric heater has been developed and is already on the market. Hair dryers that use gas combustion do not require connection to an external power supply compared to those that use an electric heater, and are therefore cordless, so they can be used where power is not available, so the location of use is not limited. Has been widely used since.

  FIG. 4 is a cross-sectional view showing a configuration of a portable hair dryer described in Patent Document 1 below.

  The housing of the main body 102 of the hair dryer 101 has an L shape formed of a heat-resistant molded product. Inside the handle of the main body 102 are stored a gas cylinder 103 for storing fuel gas, a storage battery 128, a rotation control and charging electric circuit 129, and a control unit 112 for controlling the amount of fuel gas supplied from the gas cylinder 103. The hot air generating part of the main body 102 includes a nozzle 104 positioned at the outlet of the gas supply path from the gas cylinder 103, a blower 106 that supplies air from the rear of the nozzle 104 toward the hot air outlet 105, A premixing unit 107 that premixes air blown by the unit 106 and fuel gas to form a mixed gas, a preheating unit 108 that heats the mixed gas mixed by the premixing unit 107 to a predetermined temperature, and this preheating. An ignition unit 109 for igniting the mixed gas heated by the unit 108, a catalytic combustion unit 110 for catalytic combustion of the mixed gas, a detection unit 111 for detecting a temperature change in the catalytic combustion unit 110, and a detection unit 111 A control unit 112 is provided for controlling the amount of fuel gas supplied from the gas cylinder 103 by controlling the opening and closing of the valve unit of the nozzle 104 according to the detection.

  Although not shown, in the portable hair dryer described in Patent Document 2 below, a gas cylinder is attached in parallel under the warm air generating part, not inside the handle of the L-shaped body. Yes.

On the other hand, in Patent Document 3 shown below, as shown in FIG. 5, the main body case 201 is formed in an elongated cylindrical shape in the front-rear direction, the blowout port 202 at the front end, and the blowout port 203 and the cord 204 at the rear end. The heating unit 205 and the air blowing device 206 are housed side by side in the main body case 201, and an attachment 207 such as a brush is detachably attached to the air outlet 202. The configuration of the resulting hair dryer 200 is shown.
Japanese Patent Laid-Open No. 5-137612 (paragraph [0008], FIG. 1) Japanese Patent Laid-Open No. 5-137613 (paragraph [0008], FIG. 1) Japanese Utility Model Publication No. 5-74405 (paragraphs [0007], [0008], FIG. 2)

  However, in the portable hair dryers of Patent Document 1 and Patent Document 2, since the housing has an L-shaped outer shape fixed for piping from the gas cylinder to the nozzle, it is bulky and inconvenient to carry. In addition, there is also a risk that the bag may be damaged if it is forced into the bag to be bulky. In that operation, even if the handle is held and the other end of the hot air generating part is directed to a predetermined part of the head, the movement of the handle part is amplified at the other end of the hot air generating part, and it is quite as intended. In addition, there is a problem that handling is not easy and, therefore, usability is not good.

  On the other hand, according to the hair dryer described in Patent Document 3, the main body case is formed in a long and narrow cylindrical shape in the front-rear direction, and also functions as a grip over almost the entire length thereof. However, in the case of a portable gas-fired hair dryer, it is necessary to have a gas cylinder holding part, battery storage part, etc., so even if it is formed in such an elongated cylindrical body, it is large and bulky and inconvenient in the end. There was a problem of becoming.

  As a result of various studies to solve the above problems, the inventors of the present application have paid attention to the installation position of the gas cylinder and the arrangement position of the intake port, and have formed a long circular cylindrical shape in the front-rear direction. A portable hair dryer having an outer case whose diameter is enlarged in the vicinity of the portion, wherein the portable hair dryer includes a mixing / igniting unit, a blower unit, and an ignition unit in order from the front end side in the outer case, The present inventors have found that a useless space can be omitted by forming an air inlet in the peripheral edge of the outer case located between the air blowing part and the ignition part, and have completed the present invention.

  That is, an object of the present invention is to provide an easy-to-use portable hair dryer that is easy to carry with a space-saving design.

In order to solve the above-mentioned problems, the present invention is a portable hair dryer having an outer case that has a circular cylindrical shape that is long in the front-rear direction and whose rear end portion is enlarged in diameter. Is provided with a mixing / igniting part, a blower part and an ignition part in order from the front end side in the outer case, and an air inlet is formed at the peripheral edge of the outer case located between the blower part and the ignition part A gas cylinder is detachably attached to the rear end opening of the outer case, and the mixing / igniting unit, the air blowing unit, the ignition unit, and the gas cylinder are arranged on the same straight line .

According to the present invention, since the mixing / igniting unit, the air blowing unit, the ignition unit, and the gas cylinder are arranged on the same straight line, it is possible to provide an easy-to-use portable hair dryer that is easy to carry with a space-saving design. That is, since the conventional hair dryer is L-shaped, there is a wasteful space between the handle portion and the hot air blowing portion even when folded, and as a result tends to be large , In the present invention, since the mixing / ignition part, the air blowing part, the ignition part, and the gas cylinder are arranged on the same straight line, the overall size can be reduced. Further, since the intake port is formed on the peripheral edge of the outer case located between the blower port and the ignition unit, space can be saved by further effectively utilizing the space.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a portable hair dryer for embodying the technical idea of the present invention, and is not intended to specify the present invention as this portable hair dryer. The present invention is equally applicable to other embodiments within the scope of the claims.

  FIG. 1 shows an embodiment for explaining the outline of the internal arrangement of a portable hair dryer according to the present invention, FIG. 1 (a) is a front view of a part of the internal configuration, and FIG. 1 (b). FIG. 1C is a cross-sectional view taken along the line AA in FIG. 1A. FIG. 2 is a plan view transparently showing a part of the internal configuration, explaining the outline of the internal arrangement of the portable hair dryer. 3 is a cross-sectional view for explaining the outline of the internal arrangement of the portable hair dryer. FIG. 3A is a cross-sectional view taken along the line BB in FIG. 2, and FIG. 3B is a cross-sectional view taken along the line CC in FIG. It is.

  First, the basic structure of the portable hair dryer according to the present invention will be described. As shown in FIGS. 1 (a) and 1 (b), a portable hair dryer 1 according to the present invention has an outer case 10 having a circular cylindrical shape that is long in the front-rear direction. An ignition unit 11, an air blowing unit 12, an ignition unit 13, and a battery storage unit 14 are provided.

  The outer case 10 is made of a heat-resistant molded product, stainless steel, or the like, and has a substantially elliptical cross section as shown in FIGS. 1 (a) and 1 (b). The basic shape of the longitudinal section of the outer case 10 is a cylindrical shape that is long in the front-rear direction, but the vicinity of one end is enlarged, and a part of the slide knob 18 protrudes slightly on the side surface of the outer case 10. It just has a smooth shape as a whole. In addition, although the cross section of the outer case 10 is elliptical here, it may be formed in a perfect circle shape.

  The mixing / igniting part 11 is disposed in the front part of the outer case 10, and a discharge port 15 for blowing hot air to the outside is formed in the front end opening of the outer case 10 in front of the mixing / igniting part 11. The air blower 12 is disposed in the center of the outer case 10 behind the mixing / ignition part 11, and as shown in FIGS. 2 and 3B, the ignition part 13 and the battery storage part 14 are arranged side by side. It is arrange | positioned in the rear part of the outer case 10 in back. An intake port 16 for introducing outside air is formed in a side portion of the outer case 10 located between the air blowing unit 12, the ignition unit 13, and the battery storage unit 14. The intake port 16 is formed of an oval hole 16 a and is continuously formed along the periphery of the outer case 10. A gas cylinder 17 filled with a fuel gas such as propane or butane is detachably inserted into the rear end opening of the outer case 10 behind the ignition unit 13 and the battery storage unit 14. A slide knob 18 for generating a high voltage in a piezoelectric unit (not shown), which will be described later, is provided on the side wall surface of the outer case 10 near the portion 14.

  The mixing / igniting unit 11 includes a preheating fin 19, a support 20, a nozzle 21, ignition means (not shown) for igniting the mixed gas in the preheating unit, a burner for burning the mixed gas heated by the preheating unit, And a heat source (not shown) formed by a gas combustion chamber such as a combustion section. A carrier such as porous cordierite or ceramics such as alumina, or a metal plate is used as the burning part. The nozzle 21 is located at the outlet of the relay pipe of the gas supply path (not shown) from the gas cylinder 17 through the valve 22.

  The air blowing unit 12 includes a fan motor 23 and a fan 24 that send wind. The wind is taken in from the intake port 16, and air is supplied to the air outlet 15 by the rotation of the fan 24.

  The ignition unit 13 includes a battery mounted in the battery storage unit 14 and a rotation control electric circuit 25 including a micro switch (not shown), a valve 22 for controlling the amount of fuel gas supplied from the gas cylinder 17, and a valve 22 A solenoid 26 for opening and closing the open / close valve, a piezoelectric unit (not shown) for spark discharge, and a spark plug (not shown). The piezoelectric unit used as the discharge electrode can use a piezoelectric element that generates a spark by applying mechanical pressure, an electric circuit assembly that generates a spark by generating a high voltage electronically, and the like. The periphery of the piezoelectric unit can be covered with a resin mold to maintain an insulation state from the surroundings. The other electrode of the discharge electrode is provided on the outer periphery of the mixing / igniting unit 11 and is connected to the piezoelectric unit by an electric wire. In FIG. 1 to FIG. 3, piping and electric wire connections between the gas cylinder 17, the valve 22, and the nozzle 21 of the mixing / igniting unit 11 are not shown.

  Next, the operation of the portable hair dryer according to the present invention will be described.

  When the slide knob 18 is slid to change from the OFF state to the ON state, the fan motor 23 operates and the fan 24 rotates. Further, the solenoid 26 opens the on-off valve of the gas supply path, and the fuel gas is sent from the gas cylinder 17 to the nozzle 21 via the valve 22. Further, in the ignition unit 13, the piezoelectric unit is pressed, a high voltage is generated, and discharge ignition is performed.

  The valve 22 is located in the middle of the relay pipe connected to the nozzle 21 of the mixing / ignition unit 11 to which the gas from the gas cylinder 17 is supplied. The valve 22 controls the amount of fuel gas supplied from the gas cylinder 17 by controlling the opening and closing of the valve by a solenoid 26. In this control, for example, the supply area of the control valve formed at the rear end of the valve 22 is increased by driving the solenoid 26 to increase the gas supply. The nozzle 21 provided at the tip of the relay pipe injects the vaporized gas in the gas cylinder 17 to the mixing unit of the mixing / igniting unit 11.

  The preheating part of the mixing / igniting part 11 is a part for heating the mixed gas to a predetermined temperature in order to promote combustion. The preheating fin 19 covers the outer periphery of the combustion part and has one end extending to the mixing part. It is comprised with the heat-insulating board 27 with the air permeability which covers the exit of a heat source. The mixed and preheated gas is ignited and burned by the pressurized discharge of the piezoelectric unit.

  The combusted gas is blown out from the air outlet 15 by the blowing from the blowing unit 12 provided behind the mixing / igniting unit 11, and hot air is supplied.

  Although not shown in the present embodiment, an attachment such as a brush can be attached to the air outlet 15.

FIG. 1 shows an embodiment for explaining the outline of the internal arrangement of a portable hair dryer according to the present invention, FIG. 1 (a) is a front view of a part of the internal configuration, and FIG. 1 (b). FIG. 1C is a side view seen from the air outlet side, and FIG. 1C is a cross-sectional view taken along line AA in FIG. FIG. 2 is a plan view illustrating a part of the internal configuration, explaining the outline of the internal arrangement of the portable hair dryer. 3 is a cross-sectional view for explaining the outline of the internal arrangement of the portable hair dryer. FIG. 3A is a cross-sectional view taken along the line BB in FIG. 2, and FIG. 3B is a cross-sectional view taken along the line CC in FIG. . FIG. 4 is a cross-sectional view showing a configuration of a conventional portable hair dryer. FIG. 5 is a cross-sectional view showing a configuration of a conventional hair dryer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable hair dryer 10 Outer case 11 Mixing / ignition part 12 Blower part 13 Ignition part 14 Battery storage part 15 Air outlet 16 Inlet 17 Gas cylinder 18 Slide knob 19 Preheating fin 20 Support body 21 Nozzle 22 Valve 23 Fan motor 24 Fan 25 Electric circuit for rotation control 26 Solenoid 27 Heat shield

Claims (1)

It is a portable hair dryer that has a long cylindrical shape in the front-rear direction, and has an outer case in which the vicinity of the rear end is enlarged in diameter,
The portable hair dryer includes a mixing / ignition part, a blower part, and an ignition part in order from the front end side in the outer case, and a peripheral edge of the outer case located between the blower part and the ignition part. An air inlet is formed , a gas cylinder is detachably inserted into the rear end opening of the outer case, and the mixing / igniting unit, the air blowing unit, the ignition unit, and the gas cylinder are arranged on the same straight line. A portable hair dryer characterized by

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