WO2023087493A1 - Air duct assembly and electric hair drier - Google Patents

Abstract

The present invention relates to an air duct assembly and an electric hair dryer. The air duct assembly comprises: a housing assembly, which is provided with an air inlet, an air outlet, and a first chamber that is separately in communication with the air inlet and the air outlet; a first air guide member, which is provided with a second chamber having a first opening; a second air guide member, which encloses a third chamber together with the housing assembly, the third chamber having a second opening, the second air guide member passing through the first opening and extending to the second chamber, the third chamber being in communication with the second chamber by means of the second opening, and a communication gap being formed between the first air guide member and the second air guide member; a third air guide member, which is provided in the third chamber; and a motor device, which is provided in the third chamber.

Description

Air duct assembly and hair dryer

Cross References to Related Applications

This application claims the priority of the Chinese patent application with application number 202122843788.0 and titled "An Air Duct Assembly and Hair Dryer" filed on November 19, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The invention relates to the technical field of household appliances, in particular to an air duct assembly and a hair dryer.

Background technique

Most of the hair dryer products currently on the market use low-speed hair dryers to dry hair. This type of hair dryer is generally composed of a DC low-speed motor and ordinary wind blades, which cannot form an overall air outlet. Therefore, some high-speed hair dryer products have appeared on the market. The motor speed can reach 110,000 rpm, the wind speed is above 20m/s, and the hair drying speed is extremely fast. Such high-speed hair dryer products generally have the problems of complex air duct structure, high product assembly difficulty, and high manufacturing cost, so it is difficult to popularize them.

Contents of the invention

Based on this, it is necessary to provide an air duct assembly with high wind speed, simple air duct structure, low assembly difficulty, and low production cost for the problems of low wind speed and pressure, slow drying speed, and complex air duct structure in existing hair dryer products. hair dryer.

An air duct assembly, the air duct assembly includes: a housing assembly, the housing assembly is provided with an air inlet, an air outlet, and a first cavity, and the first cavity is connected to the air inlet and the air outlet respectively. The air outlet is connected; the first air guide, the first air guide is provided with a second cavity, and the second cavity is provided with a first opening; the second air guide, the second air guide A third cavity is formed surrounded by the housing assembly, a second opening is provided on the third cavity, and the second air guiding member extends to the second cavity through the first opening, The third cavity communicates with the second cavity through the second opening, and a communication gap is interposed between the first air guide and the second air guide; the third air guide , the third air guiding member is arranged in the third cavity; a motor device, the motor device is arranged in the third cavity, and the motor device is used to make air pass through the housing assembly. The air inlet passes through the first cavity, the second cavity, and the third cavity in sequence, and then outputs from the air outlet.

The air duct assembly disclosed in the present application includes a housing assembly, a first air guide, a second air guide, a third air guide and a motor device. Wherein, the shell assembly encloses and forms a first cavity having an air inlet and an air outlet. The first cavity communicates with the air inlet and the air outlet respectively to form an air duct. A second air guide, a third air guide and a motor device are arranged in the first cavity. Specifically, the first air guiding member is provided with a second cavity, and the second air guiding member can extend into the second cavity through the first opening on the second cavity. Between the first air guiding part and the shell assembly, between the second air guiding part and the first air guiding part, a communicating air inlet gap is interposed. The second air guide part and the housing assembly are enclosed to form a third cavity. The first cavity, the second cavity and the third cavity communicate with each other. The motor device is arranged in the third cavity, and the motor device generates negative pressure in the third cavity, so that the air outside the air duct assembly enters the first cavity through the first cavity of the housing assembly and the air inlet gap formed with the first air guide. Inside the second chamber. Then enter the third cavity through the air intake gap between the first air guide part and the second air guide part. Finally, after passing through the third air guide in the third cavity, it is output through the air outlet gap formed by the third air guide and the shell assembly near the air outlet.

In the above-mentioned air duct assembly, the air outside the air duct assembly is directly sucked into the air duct assembly by the negative pressure draft generated by the motor device. Then, by setting the first air guide, the second air guide, and the third air guide, and forming a narrow air inlet gap between the air guide and the housing assembly, and between each air guide, A high-speed airflow is formed in the air duct to generate high-speed blowing, and the above-mentioned air duct assembly has a simple structure, fewer components, low assembly difficulty and high assembly efficiency.

In one of the embodiments, the second air guide includes a first vertical air guide section and a first bent air guide section, and one end of the first bent air guide section is connected to the first vertical air guide section. The connection forms a bent trumpet shape, and the other end of the first bent air guiding section is connected with the housing assembly.

In the above-mentioned air duct assembly, the second air guide member includes a first vertical air guide section and a first bent air guide section, and one end of the first bent air guide section is connected with the first vertical air guide section to form a bent horn shape, so that when the air flow quickly passes through the first vertical air guide section of the third cavity, the air guide area of the air duct assembly is increased under the action of the first bent air guide section, and the uniformity and efficiency of blowing are improved .

In one of the embodiments, the angle between the connection between the first vertical air guiding section and the first bent air guiding section is 95° to 175°.

In the above-mentioned air duct assembly, the angle between the connection between the first vertical air guide section and the first bent air guide section is 95° to 175°. Within the range of the included angle between the first vertical air guide section and the first bent air guide section, the air duct assembly has high blowing efficiency and good air outlet uniformity.

Optionally, the angle between the connection between the first vertical air guide section and the first bent air guide section is 95°, the air outlet area is further increased, and the air outlet uniformity is good.

Optionally, the angle between the connection between the first vertical air guide section and the first bent air guide section is 175°, so that the air outlet concentration is good, the wind speed is high, and the air drying efficiency is fast.

In one of the embodiments, the angle between the connection between the first vertical air guiding section and the first bent air guiding section is 120° to 160°.

In the above-mentioned air duct assembly, further, the angle between the connection between the first vertical air guide section and the first bent air guide section is 120° to 160°.

Preferably, the angle between the connection between the first vertical air guide section and the first bent air guide section is 135°, the air outlet area is large, the air outlet uniformity is good, the wind speed is high, and the air drying efficiency is high.

In one of the embodiments, the third air guide includes a second vertical air guide section and a second bent air guide section, the second bent air guide section is connected to the second vertical air guide section, The second bent air guide section is arranged opposite to the first bent air guide section, and the included angle between the second bent air guide section and the second vertical air guide section is 95° to 175° °.

In the above-mentioned air duct assembly, the third air guide member includes a second vertical air guide section and a second bent air guide section, the second bent air guide section is connected to the second vertical air guide section, and the second bent air guide section It is arranged opposite to the first bent air guide section, and the included angle between the second bent air guide section and the second vertical air guide section is 95° to 175°. In the above design, when the air flow enters the third cavity, it passes through the first vertical air guide section and then the first bent air guide section to enlarge the air duct area. In the case where the first bent air guide section of the second air guide part is set opposite to the second bent air guide section of the third air guide part, on the premise of enlarging the area of the air duct, the closed air duct will The narrowness increases the wind speed.

Optionally, the angle between the connection between the second bent air guide section and the second vertical air guide section is 95°, so that the air outlet area is increased and the air outlet uniformity is good.

Optionally, the angle between the connection between the second bent air guide section and the second vertical air guide section is 175°, so that the concentration of the air outlet is good, the wind speed is high, and the air drying efficiency is fast.

Preferably, the angle between the connection between the second bent air guide section and the second vertical air guide section is 135°, which not only ensures the air outlet area, but also ensures the concentrated wind speed, high wind speed, and fast air-drying efficiency.

In one of the embodiments, the cross-sectional area of the second vertical air guide section gradually increases from an end close to the second air guide part to an end far away from the second air guide part.

In the above-mentioned air duct assembly, the cross-sectional area of the second vertical air guide section gradually increases from an end close to the second air guide member to an end far away from the second air guide member. On the premise of ensuring the air outlet area, the above design further improves the air outlet wind speed.

In one of the embodiments, the third air guide part further includes a third bent air guide section, and the third bent air guide section is far away from the second vertical air guide section. One end of the air section is connected, and a gap is interposed between the third bent air guide section and the housing assembly on the side close to the air outlet.

In the above-mentioned air duct assembly, the third air guide member further includes a third bent air guide section, and the third bent air guide section is connected to an end of the second vertical air guide section away from the second bent air guide section. By arranging the third bent air guide section, the air outlet in the third cavity can be blocked to a certain extent, and the high-speed air outlet of the air duct assembly can be directly blown out to cause tingling sensation to the user, thereby affecting the comfort of use.

In one of the embodiments, the third air guide member further includes a plurality of air guide plates, and the plurality of air guide plates are uniformly arranged in an inverted triangle shape along the circumference of the third bent air guide section 43 .

In the above-mentioned air duct assembly, the third air guide member further includes a plurality of air guide plates, and the plurality of air guide plates are evenly arranged in an inverted triangle shape along the circumferential direction of the third bent air guide section, thereby improving the uniformity of the air outlet.

In one of the embodiments, an R-shaped included angle is set between the third bent air guide section, the air guide plate and the housing assembly.

In the above-mentioned air duct assembly, further, an R-shaped included angle is set between the third bent air guide section, the air guide plate and the housing assembly. The above-mentioned design is beneficial to the direct blowing of the buffered air and improves the comfort of the air duct assembly.

A hair dryer, comprising: a heating device, a handle assembly and the air duct assembly as described in any one of the foregoing, the handle assembly is connected to the housing assembly, the heating device is arranged in the third cavity, The heating device is connected with the second air guide assembly or the third air guide assembly.

The embodiment of the second aspect of the present application provides a hair dryer. The above-mentioned hair dryer is equipped with any one of the aforementioned air duct components, so that the hair dryer can generate high-speed and uniform hot air, with high air-drying efficiency and good air-drying effect, and the air duct has a simple structure, easy assembly, high assembly efficiency, and low production costs. Low

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the air duct assembly of the present invention;

Fig. 2 is a sectional view of the air duct assembly of the present invention;

Fig. 3 is a schematic structural view of the first air guiding member of the present invention;

Fig. 4 is a schematic structural view of the second air guiding member of the present invention;

Fig. 5 is a cross-sectional view of the second air guide of the present invention;

Fig. 6 is a cross-sectional view of the third air guiding member of the present invention;

Fig. 7 is a schematic structural view of the third air guiding member of the present invention;

Fig. 8 is a schematic structural view of the hair dryer of the present invention;

Fig. 9 is a cross-sectional view of the hair dryer of the present invention.

Among them, the corresponding relationship between reference signs and component names is:

1 shell assembly, 101 air inlet, 102 air outlet, 103 first cavity;

2 the first air guide, 201 the second cavity; 202 the first opening;

3 the second air guide, 301 the third cavity, 31 the first vertical air guide section, 32 the first bent air guide section;

4 the third air guiding part, 41 the second vertical air guiding section, 42 the second bending air guiding section, 43 the third bending air guiding section, 44 the air guiding plate;

5 motor device;

6 heating device;

7 handle assembly.

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The following describes the air duct assembly and the hair dryer according to some embodiments of the present invention with reference to the accompanying drawings.

As shown in Figures 1 to 4, the present embodiment discloses an air duct assembly, including: a housing assembly 1, which is provided with an air inlet 101, an air outlet 102, and a first cavity 103, the first The cavity 103 communicates with the air inlet 101 and the air outlet 102 respectively; the first air guide 2, the first air guide 2 is provided with a second cavity 201, and the second cavity 201 is provided with a first opening 202; The air guide 3, the second air guide 3 and the housing assembly 1 enclose a third cavity 301, the third cavity 301 is provided with a second opening 302, and the second air guide 3 passes through the first opening 202 Extending to the second cavity 201, the third cavity 301 communicates with the second cavity 201 through the second opening 302, and a communication gap is interposed between the first air guide 2 and the second air guide 3; the third The air guide 4, the third air guide 4 is arranged in the third cavity 301; the motor device 5, the motor device 5 is arranged in the third cavity 301, the motor device 5 is used to make the air enter through the housing assembly 1 The tuyere 101 passes through the first cavity 103 , the second cavity 201 , and the third cavity 301 in sequence, and then outputs from the air outlet 102 .

The air duct assembly disclosed in this application includes a housing assembly 1 , a first air guide 2 , a second air guide 3 , a third air guide 4 and a motor device 5 . Wherein, the casing assembly 1 encloses and forms a first cavity 103 having an air inlet 101 and an air outlet 102 . The first cavity 103 communicates with the air inlet 101 and the air outlet 102 respectively to form an air duct. The second air guide 3 , the third air guide 4 and the motor device 5 are arranged in the first cavity 103 . Specifically, the first air guide 2 is provided with a second cavity 201 , and the second air guide 3 can extend into the second cavity 201 through the first opening 202 on the second cavity 201 . Between the first air guiding part 2 and the housing assembly 1 , between the second air guiding part 3 and the first air guiding part 2 are interposed communicating air inlet gaps. The second air guide 3 and the housing assembly 1 enclose to form a third cavity 301 . The first cavity 103 , the second cavity 201 and the third cavity 301 are in communication. The motor device 5 is arranged in the third cavity 301, and the motor device 5 generates negative pressure in the third cavity 301, so that the air outside the air duct assembly passes through the first cavity 103 of the housing assembly 1 and the first air guide The air intake gap formed by the component 2 enters into the second cavity 201 . Then enter the third cavity 301 through the air intake gap between the first air guide 2 and the second air guide 3 . Finally, after passing through the third air guide 4 in the third cavity 301 , it is output through the air outlet gap formed between the third air guide 4 and the shell assembly 1 near the air outlet 102 .

In the above-mentioned air duct assembly, the air outside the air duct assembly is directly sucked into the air duct assembly by the negative pressure draft generated by the motor device 5 . Then by setting the first air guide 2, the second air guide 3, the third air guide 4, and between the air guide and the shell assembly 1, and between the air guides to form a narrow air inlet gaps, thereby forming high-speed airflow in the air duct and generating high-speed blowing, and the above-mentioned air duct assembly has a simple structure, fewer components, low assembly difficulty, and high assembly efficiency.

As shown in Fig. 4 and Fig. 5, in addition to the features of the above-mentioned embodiments, this embodiment further defines that: the second air guiding member 3 includes a first vertical air guiding section 31 and a first bent air guiding section 32, the first One end of the bent air guiding section 32 is connected to the first vertical air guiding section 31 to form a bent trumpet shape, and the other end of the first bent air guiding section 32 is connected to the housing assembly 1 .

In the above-mentioned air duct assembly, the second air guide member 3 includes a first vertical air guide section 31 and a first bent air guide section 32 , and one end of the first bent air guide section 32 is connected to the first vertical air guide section 31 A bent trumpet shape is formed, so that when the air flow quickly passes through the first vertical air guide section 31 of the third cavity 301, the air guide area of the air duct assembly is increased under the action of the first bent air guide section 32, Improve the uniformity and efficiency of blowing.

As shown in FIG. 5 , further, the angle between the connection between the first vertical air guiding section 31 and the first bent air guiding section 32 is 95° to 175°.

In the above-mentioned air duct assembly, the angle between the connection between the first vertical air guide section 31 and the first bent air guide section 32 is 95° to 175°. Within the range of the included angle between the first vertical air guide section 31 and the first bent air guide section 32, the air duct assembly has high blowing efficiency and good air outlet uniformity.

Optionally, the angle between the connection between the first vertical air guide section 31 and the first bent air guide section 32 is 95°, the air outlet area is further increased, and the air outlet uniformity is good.

Optionally, the angle between the connection between the first vertical air guide section 31 and the first bent air guide section 32 is 175°, so that the air outlet concentration is good, the wind speed is high, and the air drying efficiency is fast.

As shown in FIG. 5 , in this embodiment, the angle between the connection between the first vertical air guiding section 31 and the first bent air guiding section 32 is 120° to 160°.

In the above-mentioned air duct assembly, further, the angle between the connection between the first vertical air guide section 31 and the first bent air guide section 32 is 120° to 160°.

Optionally, the angle between the connection between the first vertical air guide section 31 and the first bent air guide section 32 is 135°, the air outlet area is large, the air outlet uniformity is good, the wind speed is high, and the air drying efficiency is high.

As shown in Figure 6, in this embodiment, the third wind guide 4 includes a second vertical wind guide section 41 and a second bent air guide section 42, and the second bent wind guide section 42 is connected to the second vertical wind guide section 42. Section 41 is connected, the second bent air guide section 42 is set opposite to the first bent air guide section 32, and the angle at the connection between the second bent air guide section 42 and the second vertical air guide section 41 is 95° to 175° °.

In the above-mentioned air duct assembly, the third air guide member 4 includes a second vertical air guide section 41 and a second bent air guide section 42, the second bent air guide section 42 is connected with the second vertical air guide section 41, and the second The bent air guide section 42 is arranged opposite to the first bent air guide section 32 , and the angle between the connection between the second bent air guide section 42 and the second vertical air guide section 41 is 95° to 175°. In the above design, when the air flow enters the third cavity 301 , it passes through the first vertical air guide section 41 and then the first bent air guide section 32 to enlarge the air duct area. In the case where the first bent air guide section 32 of the second air guide member 3 is set opposite to the second bent air guide section 42 of the third air guide member 4, on the premise of enlarging the area of the air passage, by The narrowing of the air duct increases the wind speed.

Optionally, the angle between the connection between the second bent air guide section 42 and the second vertical air guide section 41 is 95°, so that the air outlet area is increased and the air outlet uniformity is good.

Optionally, the angle between the connection between the second bent air guide section 42 and the second vertical air guide section 41 is 175°, so that the concentration of the air outlet is good, the wind speed is high, and the air drying efficiency is fast.

Preferably, the angle between the connection between the second bent air guide section 42 and the second vertical air guide section 41 is 135°, which not only ensures the air outlet area, but also ensures the concentrated wind speed, high wind speed and fast air-drying efficiency.

As shown in FIG. 2 , FIG. 6 , and FIG. 7 , in this embodiment, the cross-sectional area of the second vertical air guide section 41 gradually increases from the end close to the second air guide member 3 to the end away from the second air guide member 3 .

In the above-mentioned air duct assembly, the cross-sectional area of the second vertical air guide section 41 gradually increases from the end close to the second air guide member 3 to the end far away from the second air guide member 3 . On the premise of ensuring the air outlet area, the above design further improves the air outlet wind speed.

As shown in Fig. 2 and Fig. 6, in this embodiment, the third air guide member 4 further includes a third bent air guide section 43, and the third bent air guide section 43 is far away from the second vertical air guide section 41. One ends of the two bent air guide sections 42 are connected, and a gap is sandwiched between the third bent air guide section 43 and the housing assembly 1 on the side close to the air outlet 102 .

In the above-mentioned air duct assembly, the third air guide member 4 further includes a third bent air guide section 43 , the third bent air guide section 43 and the end of the second vertical air guide section 41 away from the second bent air guide section 42 connect. By setting the third bent air guide section 43, it can form a certain resistance to the air outlet in the third cavity 301, reducing the high-speed air outlet of the air duct assembly directly blowing out and causing tingling sensation to the user, thus affecting the comfort of use sex.

As shown in FIG. 7 , in this embodiment, the third air guide member 4 further includes a plurality of air guide plates 44 , and the plurality of air guide plates 44 are in the shape of an inverted triangle along the circumferential direction of the third bent air guide section 43 . set up.

In the above-mentioned air duct assembly, the third air guide member 4 further includes a plurality of air guide plates 44, and the plurality of air guide plates 44 are uniformly arranged in an inverted triangle shape along the circumferential direction of the third bent air guide section 43, so as to improve the air flow rate. uniformity.

As shown in FIG. 2 and FIG. 6 , in this embodiment, an R-shaped included angle is set between the third bent air guide section 43 , the air guide plate 44 and the housing assembly 1 .

In the above-mentioned air duct assembly, further, an R-shaped included angle is set between the third bent air guide section 43 , the air guide plate 44 and the housing assembly 1 . The above-mentioned design is conducive to the direct blowing of the buffered air, improving the comfort of the air duct assembly.

A hair dryer, as shown in Figure 8 and Figure 9, includes: a heating device 6, a handle assembly 7 and an air duct assembly as described above, the handle assembly 7 is connected to the housing assembly 1, and the heating device 6 is arranged at the second In the three-cavity body 301 , the heating device 6 is connected with the second air guide assembly 3 or the third air guide assembly 4 .

The embodiment of the second aspect of the present application provides a hair dryer. The above-mentioned hair dryer is equipped with any one of the aforementioned air duct components, so that the hair dryer can generate high-speed and uniform hot air, with high air-drying efficiency and good air-drying effect, and the air duct has a simple structure, easy assembly, high assembly efficiency, and low production costs. Low.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. An air duct assembly, characterized in that the air duct assembly includes:

   A housing assembly (1), the housing assembly (1) is provided with an air inlet (101), an air outlet (102) and a first cavity (103), the first cavity (103) is respectively connected to the The air inlet (101) and the air outlet (102) are connected;

   A first air guide (2), the first air guide (2) is provided with a second cavity (201), and the second cavity (201) is provided with a first opening (202);

   The second air guide (3), the second air guide (3) and the housing assembly (1) are enclosed to form a third cavity (301), and the third cavity (301) is provided with There is a second opening (302), the second air guide (3) extends through the first opening (202) to the second cavity (201), and the third cavity (301) passes through The second opening (302) communicates with the second cavity (201), and a communicating gap is interposed between the first air guide (2) and the second air guide (3);

   a third air guide (4), the third air guide (4) is arranged in the third cavity (301);

   A motor device (5), the motor device (5) is arranged in the third cavity (301), the motor device (5) is used to make air pass through the inlet of the housing assembly (1) The tuyere (101) passes through the first cavity (103), the second cavity (201), and the third cavity (301) in sequence, and then outputs from the air outlet (102).
2. The air duct assembly according to claim 1, characterized in that, the second air guiding member (3) comprises a first vertical air guiding section (31) and a first bent air guiding section (32), and the first One end of a bent air guide section (32) is connected to the first vertical air guide section (31) to form a bent trumpet shape, and the other end of the first bent air guide section (32) is connected to the shell The body assembly (1) is connected.
3. The air duct assembly according to claim 2, characterized in that the angle between the connection between the first vertical air guide section (31) and the first bent air guide section (32) is 95° to 175° .
4. The air duct assembly according to claim 3, characterized in that, the angle between the connection between the first vertical air guide section (31) and the first bent air guide section (32) is 120° to 160° .
5. The air duct assembly according to any one of claims 2 to 4, characterized in that, the third air guiding member (4) comprises a second vertical air guiding section (41) and a second bent air guiding section (42 ), the second bending air guiding section (42) is connected with the second vertical air guiding section (41), and the second bending air guiding section (42) is connected with the first bending air guiding section (32) Relatively arranged, the angle between the connection between the second bent air guiding section (42) and the second vertical air guiding section (41) is 95° to 175°.
6. The air duct assembly according to claim 5, characterized in that, the cross-sectional area of the second vertical air guide section (41) is from close to the second air guide member (3) to far away from the second air guide Part (3) one end increases gradually.
7. The air duct assembly according to claim 5, characterized in that, the third air guide (4) further comprises a third bent air guide section (43), and the third bent air guide section (43) It is connected to an end of the second vertical air guide section (41) away from the second bent air guide section (42), and the third bent air guide section (43) is connected to the end close to the air outlet (102) A gap is interposed between the housing components (1) on one side.
8. The air duct assembly according to claim 7, characterized in that, the third air guide member (4) further comprises a plurality of air guide plates (44), and the plurality of air guide plates (44) are shaped like an inverted triangle It is evenly arranged along the circumferential direction of the third bent air guiding section (43).
9. The air duct assembly according to claim 8, characterized in that R is set between the third bent air guide section (43), the air guide plate (44) and the housing assembly (1) shape angle.
10. A hair dryer, characterized in that it comprises: a heating device (6), a handle assembly (7) and an air duct assembly according to any one of claims 1 to 9, the handle assembly (7) and the shell body assembly (1), the heating device (6) is set in the third cavity (301), the heating device (6) is connected with the second air guide assembly (3) or the third The air guide assembly (4) is connected.

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