Portable Hair Dryer

The portable hair dryer with independent air ducts and comb teeth structure addresses slow drying and high power consumption by enabling simultaneous suction and airflow, enhancing efficiency and reducing energy waste.

JP3252301UActive Publication Date: 2025-08-06SHENZHEN XIANG ZHIDA TECH CO LTD
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Patent Information

Application Number
JP2025000526U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2024-10-29
Filing Date
2025-02-19
Publication Date
2025-08-06
Estimated Expiration
2035-02-19

AI Technical Summary

Technical Problem

Conventional hair dryers suffer from slow drying speed and high power consumption due to the need for continuous heating of incoming air, leading to inefficiency and discomfort.

Method used

A portable hair dryer design featuring independent air intake and blowing ducts, with comb teeth that penetrate into the hair to simultaneously suck moisture and blow airflow, utilizing a fan for negative pressure and a blower motor for airflow, enhancing drying efficiency and reducing energy waste.

Benefits of technology

The design significantly improves drying speed and reduces energy consumption by allowing simultaneous moisture suction and airflow, effectively drying hair from the roots while minimizing discomfort and improving portability.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a portable hair dryer that solves the problems of slow drying speed and high power consumption. [Solution] The device comprises a housing provided with a fan (4), an intake duct (9), and a blower duct (5), the intake duct and the blower duct being provided independently of each other, the fan configured to generate suction force, the intake duct communicating with the fan, the intake duct creating negative pressure to suck and remove moisture from the hair to be dried, the blower duct blowing out an airflow to dry the hair to be dried, and comb teeth having intake comb teeth (301) and blower comb teeth (302) provided on the end face of the housing, the comb teeth coming into contact with the hair to be dried and guiding them to suck and remove moisture from the hair to be dried or guiding an airflow to dry the hair to be dried.
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Description

[Technical Field]

[0001] This utility model relates to the technical field of hair dryers, specifically to portable hair dryers. [Background technology]

[0002] A hair dryer is a common household appliance that is mainly used for drying and styling hair. It has an internal motor that drives the blades to rotate, drawing in air, which is then heated by an electric heating element and blown out through the outlet. The hot or cold air blown out can quickly dry hair and style it.

[0003] For example, the publication number of the granted patent CN202842692U (portable hair dryer) is: a hair dryer body, a switch and a handle, the switch is a voltage selector switch, the handle is connected to the shaft of the hair dryer body, and the voltage selector switch is located in the handle;

[0004] Although the above-mentioned prior art is useful for solving the inconvenience of different voltages and L-shaped structure designs in hair dryers, the drying speed is still slow, and the hair dryer needs to continuously heat the air drawn in from the outside during operation, which requires relatively high power consumption and results in excessive power loss. Therefore, the market urgently needs to develop a portable hair dryer that can solve the existing problems and help people achieve faster drying. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide a portable dryer that solves the problem of slow drying speed in conventional dryers. [Means for solving the problem]

[0006] To achieve the above objectives, this utility model provides the following technical solutions:

[0007] A portable hair dryer comprising: a housing having a fan, an air intake duct, and an air blowing duct disposed within the housing, the air intake duct and the air blowing duct being provided independently of each other;

[0008] The fan generates a suction force, and the suction duct communicates with the fan and forms a negative pressure to suck moisture from the hair to be dried; the air blowing duct blows out an airflow to dry the hair to be dried;

[0009] The end surface of the housing is provided with comb teeth that come into contact with the hair to be dried, and induces the suction of moisture in the hair to be dried or induces a blown airflow to dry the hair to be dried.

[0010] Furthermore, the outer shape of the comb teeth is flat, columnar, conical, annular, spherical, elliptical, or semicircular.

[0011] Furthermore, an air intake section communicating with the air intake duct is provided on the end face of the housing, and an air blowing section communicating with the air blowing duct is provided on the comb teeth, the air intake section being for sucking in moisture from the hair to be dried, and the air blowing section being for blowing out airflow to dry the hair to be dried.

[0012] Furthermore, an air blowing section communicating with the air supply duct is provided on the end surface of the housing, and an air intake section communicating with the air intake duct is provided on the comb teeth, the air intake section being for sucking in moisture from the hair to be dried, and the air blowing section being for blowing out airflow to dry the hair to be dried.

[0013] Furthermore, the comb teeth include air intake comb teeth and air blowing comb teeth, the air intake comb teeth are provided with an air intake section, the air blowing comb teeth are provided with an air blowing section, the air intake section is connected to the air intake duct, the air blowing section is connected to the air blowing duct, the air intake section is for sucking moisture in the hair to be dried, and the air blowing section is for blowing out airflow to dry the hair to be dried.

[0014] Furthermore, the air intake section is formed on an end surface of the air intake comb teeth, and the air intake section is an air intake groove, the air blow section is formed on an end surface of the air blow comb teeth, and the air blow section is an air blow groove, when the portable hair dryer is operated, the air intake groove and the air blow groove simultaneously dry the hair to be dried, and the negative pressure in the air intake duct is generated simultaneously with the air blowing out of the air blow duct.

[0015] Furthermore, the intake comb teeth and the blowing comb teeth are arranged at a distance that is located between two adjacent intake comb teeth.

[0016] Furthermore, the fan generates negative pressure to absorb moisture from the hair to be dried, and the portable hair dryer further includes an air blower motor connected to the air blower duct, which generates an air flow that passes through the air blower duct to dry the hair to be dried.

[0017] Furthermore, the fan has a fan intake port communicating with the intake duct and a fan outlet communicating with the blower duct, and the fan generates negative pressure to suck moisture from the hair to be dried and generates an airflow to dry the hair to be dried.

[0018] The portable hair dryer further includes a heating disk that heats the air inside the hair dryer to generate hot air that is blown out toward the hair to be dried through the air supply duct, and the hot air is sucked in through the air intake duct together with the moisture in the hair to be dried, and the hot air circulates between the air supply duct, the hair to be dried, and the air intake duct. [Effects of the Invention]

[0019] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0020] 1. This utility model has a comb-tooth structure that can penetrate into the hair, guiding the hair to be dried and allowing it to penetrate deep into the hair roots, thereby revolutionizing drying technology and improving drying efficiency.

[0021] 2. The comb teeth are divided into intake and blowing teeth. The intake and blowing teeth are arranged alternately, and the connected blowing and intake ducts create negative pressure intake air in the intake duct and positive pressure blowing air in the blowing duct, sucking moisture out of the hair while blowing and sucking at the same time, which not only greatly improves the drying speed and reduces energy waste, but also avoids the direct impact of high-speed airflow on the face and eardrums, reducing discomfort and improving the portability and energy-saving of the product.

[0022] 3. This utility model is provided with a wind conductor mechanism, which includes a wind conductor tube, a gas distributor, and a connecting pipe, thereby enabling wind to be distributed evenly and accurately to each blow comb tooth, improving drying efficiency. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a schematic diagram of a portable hair dryer according to the present invention; [Figure 2] 1 is a cross-sectional view of the housing of the present invention; [Figure 3] FIG. 2 is a schematic diagram of the structure of the intake comb teeth of the present invention; [Figure 4] FIG. 2 is a schematic diagram of the structure of the air blowing comb teeth of the present utility model; [Figure 5] FIG. 1 is a schematic plan view of a blower and an intake unit according to an embodiment of the present invention; [Figure 6] FIG. 2 is a schematic bottom view of the blower and suction units according to an embodiment of the present invention; [Figure 7] FIG. 2 is a schematic diagram of a blower and an intake unit according to another embodiment of the present invention; [Figure 8] 1 is a schematic diagram of the shape of the comb teeth of the present utility model; [Figure 9] 10 is a schematic diagram of another comb tooth shape of the present utility model. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only some of the embodiments of this utility model, and not all of the embodiments.

[0025] 1 to 9, one embodiment of the present invention is a portable hair dryer comprising a housing 2, in which a fan 4, an intake duct 9, and a blowing duct 5 are provided; the intake duct 9 and the blowing duct 5 are provided independently of each other. The intake duct 9 and the blowing duct 5 may be provided independently of each other and may not communicate with each other, or the intake duct 9 and the blowing duct 5 may be connected via a fan to circulate the airflow. It should be emphasized that the airflows between the intake duct 9 and the blowing duct 5 do not share the same airflow space at the same time, and the air drawn in from the intake duct 9 and the airflow blown out from the blowing duct 5 do not interfere with each other.

[0026] Since the air intake duct 9 and the air supply duct 5 are provided independently of each other, when drying hair, air can be blown to the hair and water can be absorbed from the hair at the same time.

[0027] If the intake duct 9 and the blower duct 5 share the same air duct and are not installed independently, the intake and blower will interfere with each other, making it difficult to perform the intake and blower simultaneously, and the drying efficiency is much lower than when the intake duct 9 and the blower duct 5 share the same air duct. The blower 4 generates suction force, and the intake air duct 9 communicates with the blower 4 to form negative pressure to suck moisture from the hair to be dried, and the blower duct 5 blows out air to dry the hair to be dried.

[0028] Comb teeth 3 are provided on the end surface of the outer case 2, and the comb teeth 3 may be provided on the end surface of the outer case 2. The comb teeth 3 are in contact with the hair to be dried, and may be arranged to play a role in guiding the absorption of moisture in the hair to be dried, or may play a role in guiding the blown airflow for blowing out the hair to be dried.

[0029] To achieve the above functions, the dryer may be provided with an air intake section and an air blowing section, or either the air intake section or the air blowing section may be provided on the comb teeth 3, or both the air intake section and the air blowing section may be provided on the comb teeth 3. Furthermore, the air intake section and the air blowing section may be disposed on different comb teeth 3, or both the air intake section and the air blowing section may be disposed on the same comb teeth 3.

[0030] 5 and 6, an air intake section is provided on the end face of the housing 2 (which can be understood as the surface of the dryer on which the comb teeth 3 are provided or the gaps between the comb teeth), and the air intake section may be hole-shaped or may be long grooves arranged in a mesh pattern, and is provided in communication with the air intake duct 9, and serves to suck in moisture from the hair to be dried and facilitate drying of the hair. Further, a blow-out section, which may be provided on the surface / end face of the comb teeth 3 or on any end or end of the comb teeth 3, is provided on the comb teeth 3, communicates with the blow-out duct 5, and serves to blow out an air flow to dry the hair to be dried.

[0031] 5 and 6, the positions of the air intake unit and the air blowing unit can be switched, and for example, the air blowing unit can be arranged on the end face of the housing 2 and the air intake unit can be arranged on the surface of the comb teeth 3, or on the end face, a certain end point, or end of the comb teeth 3. The air intake unit, which serves to suck moisture from the hair to be dried and facilitate drying, is provided in communication with the air intake duct 9, and the air blowing unit, which serves to blow air to dry the hair to be dried, is provided in communication with the air blowing duct 5.

[0032] In another embodiment, as shown in Fig. 7, an air intake section and an air blowing section may be provided simultaneously on the end faces of the comb teeth 3. The air intake section and the air blowing section may be provided on the same comb teeth, or the air intake section and the air blowing section may be provided on different comb teeth.

[0033] When the intake section and the blower section are provided on the same comb tooth, the intake section and the blower section may be arranged on the same side of the comb tooth, or on different sides of the comb tooth. Regardless of which method is selected, it is necessary to provide an intake duct 9 designed to operate in accordance with the intake section, and an air blower duct 5 that operates in accordance with the blower section.

[0034] When the air intake section and the air blowing section are provided on different comb teeth, the comb teeth can be designed accordingly. The comb teeth 3 include air intake comb teeth 301 and air blowing comb teeth 302. An air intake section is provided on the air intake comb teeth 301, and the air intake section of the air intake comb teeth 301 communicates with the air intake duct 9, so that moisture in the hair to be dried is guided from the air intake comb teeth 301 into the air intake duct 9 and sucked in. An air blowing section is provided on the air blowing comb teeth 302, and the air blowing section of the air blowing comb teeth 302 communicates with the air blowing duct 5 to guide the airflow blown out from the air blowing comb teeth 302.

[0035] The comb teeth structure provided when in use, the alternating arrangement of the air intake comb teeth 301 and the air blowing comb teeth 302, and the air blowing duct 5 and air intake duct 9 connected thereto, when the fan 4 is operated, create negative pressure air intake inside the air intake duct 9 and positive pressure air blow inside the air blowing duct 5, and hot air circulates between the comb teeth and the inside of the dryer, reducing the scattering of hot air into the air around the head and making it easier to act directly and intensively on the hair, thereby significantly improving the drying speed.

[0036] The special structure of the comb teeth allows the comb teeth to penetrate deep into the roots of hair, blowing and sucking the hair. It directly sucks moisture from the roots of the hair and then dries the inside of the hair simultaneously, with the suction air duct 9 creating negative pressure and the air blowing air duct 5 blowing out at the same time. Other prior art hair dryers, lacking a comb tooth structure, cannot reach the roots or even the inside of the hair. They also lack a method for simultaneously blowing and sucking, and can only blow near or very close to the hair. The comb teeth of this solution penetrate deep into the hair, significantly reducing the efficiency of suction, blowing, and drying. Furthermore, prior art hair dryers are spaced a certain distance from the hair, preventing them from drying. The comb teeth of this solution effectively solve the above problems, significantly improving drying efficiency compared to the prior art solution.

[0037] In one embodiment, the fan 4 is the main body that generates negative pressure suction, i.e., it is the main power source of the suction force that sucks moisture from the hair to be dried, and also the power source of the airflow blown out of the air duct 5. However, in other embodiments, the fan 4 may only be the source of negative pressure suction, and not the power source of the airflow blown out of the air duct 5. In this case, other equivalent alternatives, such as adding another power fan / motor such as a blower motor to supply the airflow required for operation to the air duct 5 and generate the airflow that dries the hair to be dried, or even directly connecting to another external airflow source to supply the airflow required for operation to the air duct 5, or directly or indirectly communicating the air duct with the atmosphere, should fall within the scope of protection of this invention.

[0038] Furthermore, the fan 4 is the main power source for the suction force that sucks moisture from the hair to be dried, and is also the power source for the airflow blown out from the air duct 5. The fan 4 has an air outlet 404 that communicates with the air duct 9 and an air outlet 405 that communicates with the air duct 5, and by communicating with the air duct 5, it is easy to perform the suction and blowing operations of the air duct simultaneously. Air suction and blowing operations are performed simultaneously. In some embodiments, the intake and blowing functions can be time-shared, or the timing can be achieved by manual intervention. However, the optimal drying effect is achieved by simultaneously suctioning and blowing. Since the intake and blowing functions are performed simultaneously, the moisture in the hair to be dried can be sucked out. When the blowing function is performed simultaneously, the moisture in the hair to be dried can be sucked out. Dry hair can also be blown out. These functions can be performed simultaneously, and moisture can be sucked out from hair that is difficult to dry, especially the parts deep at the roots. When the intake function is integrated into the hair dryer, moisture remaining at the roots of the hair can be easily sucked out. Especially for women with long hair, the combined blowing and suction configuration allows the hair to be dried by simply moving the comb teeth back and forth from the roots to the tail several times, greatly improving drying efficiency and achieving a qualitative leap over conventional technology.

[0039] Furthermore, to achieve faster drying, a heating disk 10 can be provided that uses hot air for drying and heats the air inside the portable hair dryer to form hot air, and this hot air can be blown out through the air supply duct 5 towards the hair to be dried, and circulates between the air intake duct 9 and the air intake duct 9 together with the moisture in the hair to be dried. The heating disk 10 is arranged on the outside of the fan 4, and is provided with an inner ring plate 1001 and an outer ring plate 1002, and an electric heating wire 1003 that is arranged on the outside of the inner ring plate 1001 and fixedly attached between the outer ring plate 1002 and the inner ring plate 1001, and the installation of the heating disk 10 makes it easier for the electric heating wire 1003 to heat the air, improving heating efficiency and allowing the inner ring plate 1001 and the outer ring plate 1002 to be combined.

[0040] Furthermore, the fan 4 comprises a motor 401, a fan blade 403 fixedly attached to one side of the interior of the shroud 402 and provided on the other side of the interior of the shroud 402, and since the output end of the motor 401 is fixedly connected to the fan blade 403, energy loss during power transmission is reduced and the operating efficiency of the fan is improved.

[0041] Furthermore, the blow-drying comb teeth 302 are arranged between two adjacent air-intake comb teeth 301, which makes it easy to dry the hair while absorbing moisture from the hair, thereby improving the drying speed.

[0042] Furthermore, the dryer further includes an air blowing mechanism that communicates with the air duct 5 via the air blowing comb teeth 302, and the air blowing mechanism includes an air blowing tube 6, a gas distributor 7, and a connecting pipe 8. The gas guide tube 6 is fixedly connected to one side of the gas distributor 7, and the connecting pipe 8 is fixedly connected to the other side of the gas distributor 7, and multiple connecting pipes 8 are provided, and the numbers of connecting pipes 8 and the air blowing comb teeth 302 are the same and their positions correspond to the installation of the air guide mechanism, so that the airflow can be distributed evenly and accurately to each air blowing comb tooth 302 when blown out, and the airflow can act directly on the hair, improving drying efficiency.

[0043] Furthermore, when the portable hair dryer is in operation, the blowing comb 302 and the suction comb 301 simultaneously dry the hair to be dried. The suction comb 301 guides the moisture in the hair to be dried to be sucked in, and the blowing comb 302 guides the airflow to be blown onto the hair to be dried, so that air is sucked in and blown out simultaneously when the dryer is in operation, which results in better drying time and efficiency than when only air is sucked in and blown out.

[0044] Furthermore, an air intake groove 3011 is provided on the end face of the air intake comb tooth 301 as an air intake portion. The end face may be any face of the air intake comb tooth, and in one embodiment, may be divided into top, bottom, left, right, front, and rear end faces. In one embodiment, the air intake groove 3011 is provided on the end face of the air intake comb tooth 301, and the air blow groove 3021 is provided on the end face of the air blow comb tooth 302, and the air blow groove 3021 serves as an air blow portion. The end face may be any face on the air blow comb tooth, and in one embodiment, may be divided into top, bottom, left, right, front, and rear end faces. In one embodiment, the air blow groove 3021 is provided on the end face of the air blow comb tooth 302. By combining the air intake slots 3011 and the air supply slots 3021, the air intake comb teeth 301 can form a more concentrated airflow, improving the air intake efficiency, and the air supply comb teeth 302 can form a more uniform and concentrated airflow, improving the air supply efficiency. Furthermore, by providing three air supply slots 3021, the airflow can cover the hair more completely, further improving the drying effect.

[0045] Furthermore, the handle 1 is fixedly attached to the lower part of the housing 2, a lithium battery is disposed inside the handle 1, and a charging port for the lithium battery is disposed below the handle 1. The arrangement of the handle 1 and the lithium battery makes the device portable, durable, and highly practical.

[0046] The shape of the comb teeth 3 is not limited to the embodiment shown in the drawings, and in a specific design, the outer shape of the comb teeth 3 may be set to other shapes such as flat, columnar, conical, annular, spherical, elliptical, semicircular, etc., as shown in Figures 8 and 9. In the conventional embodiment, the comb teeth 3 may be flat, but of course in other embodiments, they may be columnar, conical, annular, spherical, etc. Also, in other embodiments, the comb teeth 3 may be in the shape of an annular or semicircular ring, with the middle of the ring being openworked.

[0047] In the present invention, the comb teeth 3 are one of the structural components that guide the dried hair in the dryer, and should not be limited to the conventional one, and the comb teeth 3 mentioned in the present invention should not be understood in direct relation to the outer shape of the comb teeth of a conventional comb. The concept of the comb teeth 3 in the present invention should not be narrowed. The concept of the comb teeth 3 should be understood by expanding its functionality, for example, a structure that protrudes from the end surface of a dryer designed as in the present invention and guides drying is equivalent to the comb teeth of the present invention.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in all respects, the embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is limited by the appended claims, not the above description, and all changes that come within the meaning and range of equivalence of the claims are therefore intended to be embraced by the present invention. Any reference signs in the claims should not be considered as limiting those claims. [Explanation of symbols]

[0049] 1, the handle 2. Housing 3. Comb teeth 301, intake comb teeth 3011, intake groove hole 302, blow comb teeth 3021, Ventilation slot 4. Fan 401, electric motor; 402, cover case 403 - Fan Wing 404, fan intake 405, fan outlet 5. Ventilation duct 6. Guide cylinder 7. Gas distributor 8. Connecting pipe 9. Suction air duct 10. Heating plate and 1001, inner ring plate 1002, outer ring plate 1003, heating wire

Claims

1. A portable dryer comprising a housing (2) provided with a blower (4), an intake duct (9), and an air supply duct (5); and the intake duct (9) and the air supply duct (5) are provided independently of each other; The fan (4) generates a suction force, and the suction duct (9) communicates with the fan (4) and creates a negative pressure to suck moisture from the hair to be dried, and the air blowing duct (5) blows out an airflow for drying the hair to be dried. The end face of the outer case (2) is provided with comb teeth (3) that come into contact with the hair to be dried, and guides the moisture in the hair to be dried so as to be sucked in, or guides the blown airflow to blow out the hair to be dried.

2. The portable hair dryer according to claim 1, characterized in that an air intake section communicating with the air intake duct (9) is provided on the end face of the housing (2), and an air blowing section communicating with the air blowing duct (5) is provided on the comb teeth (3), the air intake section is for sucking moisture from the hair to be dried, and the air blowing section is for blowing out air to dry the hair to be dried.

3. The portable hair dryer according to claim 1, characterized in that an air blowing section communicating with the air blowing duct (5) is provided on the end face of the housing (2), and the comb teeth (3) are provided with an air intake section communicating with the air intake duct (9), the air intake section being for sucking moisture from the hair to be dried, and the air blowing section being for blowing out airflow to dry the hair to be dried.

4. The portable hair dryer according to claim 1, characterized in that the comb teeth (3) are provided with an air intake section and an air blowing section that are connected to the air supply duct (5) and the air intake section is connected to the air intake duct (9), the air intake section is for sucking moisture from the hair to be dried, and the air blowing section is for blowing out air to dry the hair to be dried.

5. The portable hair dryer according to claim 1, wherein the comb teeth (3) have air intake teeth (301) and air blowing teeth (302); the air intake teeth (301) are provided with an air intake section, the air blowing teeth (302) are provided with an air blowing section, the air intake section is connected to the air intake duct (9), the air blowing section is connected to the air blowing duct (5), the air intake section is for sucking moisture in the hair to be dried, and the air blowing section is for blowing out airflow to dry the hair to be dried.

6. 6. The portable hair dryer according to claim 5, wherein the air intake portion is formed on an end surface of the air intake comb teeth (301), and the air intake portion is an air intake groove (3011). The air blowing portion is formed on the end surface of the air blowing comb tooth (302), and the air blowing portion is an air blowing groove hole (3021), When the portable hair dryer is operated, the air intake groove (3011) and the air outlet groove (3021) simultaneously dry the hair to be dried, and the negative pressure created by the air intake duct (9) is simultaneously blown out from the air outlet duct (5).

7. The portable hair dryer according to claim 5, wherein the outer shape of the comb teeth (3) is flat, cylindrical, conical, annular, spherical, elliptical or semicircular. The suction comb teeth (301) and the air blowing comb teeth (302) are arranged at a distance from each other, and the air blowing comb teeth (302) are located between two adjacent suction comb teeth (301).

8. The portable hair dryer according to any one of claims 1 to 7, wherein the fan (4) is used to generate negative pressure to suck moisture from hair to be dried, and further comprises an air blower motor communicating with an air blower duct (5), which generates an air flow that passes through the air blower duct (5) to dry the hair to be dried.

9. The portable hair dryer according to any one of claims 1 to 7, wherein the fan (4) has a fan inlet (404) communicating with the intake duct (9) and a fan outlet (405) communicating with the blower duct (5). The fan (4) generates a negative pressure for sucking moisture from the hair to be dried, and generates an airflow for drying the hair to be dried.

10. The portable hair dryer according to claim 9, further comprising a heating disk (10) for heating the air inside the portable hair dryer to generate hot air that is blown out through the air duct (5) toward the hair to be dried, The hot air is sucked through the intake duct (9) together with the moisture in the hair to be dried, and the hot air circulates between the blower duct (5), the hair to be dried, and the intake duct (9).