Portable high-speed fan

Abstract

The utility model discloses a portable high-speed fan which comprises a shell, an air supply assembly, a battery, an air duct support and a circuit board. The shell is in a straight cylinder shape and comprises an upper shell body, a lower shell body, a metal net ring, a top cover and a bottom cover. The air duct support is fixed to the upper end of the air supply assembly and then embedded in an inner cavity of the upper shell, and the top cover is fixed to the upper end of the air duct support and covers an upper port of the upper shell. The battery and the circuit board are installed in the battery rack, the upper end of the battery rack is fixed to the lower end of the air supply assembly, and the metal net ring wraps and is fixed to the periphery of the air supply assembly and is in butt joint with the lower end of the upper shell. The lower shell sleeves the periphery of the battery rack and is in butt joint with the lower end of the metal net ring, and the bottom cover is fixed at the lower end of the battery rack and covers a lower port of the lower shell; and the lower shell is provided with a handheld part for a hand to hold. The shell (1) is in the shape of the straight cylinder, so that the whole size of the portable electronic cigarette is relatively small, particularly the width of the upper end of the portable electronic cigarette is small, the occupied space of the portable electronic cigarette is relatively small, and the portable electronic cigarette is very convenient to carry and store.

Description

Technical Field

[0001] The utility model relates to the technical field of fan products, and particularly refers to a portable high-speed fan. Background Art

[0002] A fan refers to an electric fan, which is a tool for generating wind and cooling in hot weather. It is a device driven by electricity to generate an air flow. The fan inside rotates after being powered on to form a natural wind to achieve the effect of cooling. In order to facilitate people to pick up, a portable hand-held fan appears on the market, which can be held in the hand to achieve the effect of cooling, and is extremely convenient to use, making it an excellent choice in the sweltering summer.

[0003] The Chinese utility model patent with the application number 202321574046.5 discloses a portable high-speed fan, which includes a air supply part and a hand-held part. The air supply part includes an inner shell, an outer shell and a fan assembly. The inner shell forms an air passage, an air inlet communicated with one side of the air passage and an air outlet communicated with the other side of the air passage. The fan assembly is arranged in the air passage. The outer shell is used to cover the inner shell, and the outer shell has an installation opening. The hand-held part includes a hand-held shell, an installation mechanism and a fixing part. The hand-held shell covers the installation mechanism, the hand-held shell extends into the installation opening, and the fixing part sequentially passes through the outer shell and the hand-held shell and then connects with the installation mechanism. Combining with the attached Figure 3 It can be seen that the above portable high-speed fan is overall in a T shape, which is a relatively popular shape at present. However, for the portable high-speed fan with this shape, since its air supply part is horizontally placed at the upper end of the hand-held part, the size of the upper end (i.e., the air supply part) of the portable high-speed fan is relatively large, which requires a relatively large space and is not convenient to carry.

[0004] In view of this, the inventor of the present invention proposes the following technical solutions. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a portable high-speed fan.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: the portable high-speed fan includes an outer shell, an air supply assembly, a battery for power supply, an air duct bracket, and a circuit board electrically connected to the battery and the air supply assembly, the outer shell is in a straight cylindrical shape, and includes a cylindrical upper shell, a cylindrical lower shell, a metal mesh ring, a top cover and a bottom cover; after the air duct bracket is fixed to the upper end of the air supply assembly, it is integrally embedded and installed in the inner cavity of the upper shell, the top cover is fixed to the upper end of the air duct bracket, and covers the upper port of the upper shell; the battery and the circuit board are installed in a battery rack, the upper end of the battery rack is fixed to the lower end of the air supply assembly, the metal mesh ring is wrapped and fixed to the periphery of the air supply assembly, and is connected to the lower end of the upper shell; the lower shell is sleeved on the periphery of the battery rack, and is connected to the lower end of the metal mesh ring, and the bottom cover is fixed to the lower end of the battery rack and covers the lower port of the lower shell; the lower shell is configured as a handheld portion for human hand holding.

[0007] Furthermore, in the above technical solution, the metal mesh ring has an air inlet hole adapted to the air supply component, the air duct bracket is provided with an air duct adapted to the air supply component, and the upper shell is provided with an air outlet adapted to the air duct. When the air supply component is working, the outside air is drawn in through the air inlet hole to form wind, and the wind is discharged from the air outlet after passing through the air duct.

[0008] Furthermore, in the above technical solution, the air supply assembly includes a motor bracket installed in the outer shell and a high-speed motor installed in the motor bracket. An air inlet is arranged on the outer periphery of the lower end of the motor bracket. The metal mesh ring is detachably fixed to the outer periphery of the lower end of the motor bracket and covers the air inlet.

[0009] Furthermore, in the above technical solution, the motor bracket is cylindrical, and the lower end of the motor bracket has a plurality of thin ribs and a bottom plate integrally connected to the lower ends of the thin ribs, the air inlet is formed between two adjacent thin ribs, and a wire groove for accommodating the wires of the high-speed motor is provided on the outer side of one of the thin ribs, the wire groove extends upward through the upper end surface of the motor bracket, and the bottom plate is also provided with a wire hole for the wire to pass through, and the side of the thin rib is provided with a wiring opening corresponding to the wire hole.

[0010] Furthermore, in the above technical solution, a strip positioning groove is provided on the outer side of one of the thin ribs; the metal mesh ring is formed by bending a metal mesh into a ring, and the two ends are bent 90 degrees and then folded in half, and a bending portion protruding from the outside to the inside is formed on the inner side of the metal mesh ring, and the bending portion is pressed into the strip positioning groove from the outside to the inside, so that the metal mesh ring is fixedly wrapped around the outer periphery of the lower end of the motor bracket.

[0011] Furthermore, in the above technical solution, the air duct includes a straight cylinder section communicating with the air inlet hole, an arc section connected to the straight cylinder section and smaller in size than the straight cylinder section, and a horizontal section connected to the arc section. The horizontal section communicates with the air outlet, and the air outlet is arranged outside the upper end of the housing; the air supply component is arranged at the lower end of the straight cylinder section.

[0012] Furthermore, in the above technical solution, the upper end of the motor bracket is also nested and installed with the lower end of the air duct bracket. The high-speed motor has a wind guiding channel communicating the air duct with the air inlet hole, and an air inlet communicating with the air inlet hole is arranged at the lower end of the motor bracket.

[0013] Furthermore, in the above technical solution, the high-speed motor includes a cylindrical shell, a high-speed motor main body fixed in the cylindrical shell by a plurality of ribs, and a fan blade installed on the rotating shaft at the lower end of the high-speed motor main body. A wind guiding channel communicating the air inlet is formed between the outer periphery of the high-speed motor main body and the inner wall of the cylindrical shell. The cylindrical shell is fixed in the motor bracket. Among them, the cylindrical shell is also inlaid and installed in the lower end of the air duct bracket so that the wind guiding channel is butted with the air duct. Among them, a soft rubber shock pad is sleeved outside the cylindrical shell, and the soft rubber shock pad contacts the air duct bracket and the motor bracket.

[0014] Furthermore, in the above technical solution, one side of the battery holder has an installation groove, the battery is inlaid and installed in the installation groove, and the circuit board is fixed to the other side of the battery holder by screws.

[0015] Furthermore, in the above technical solution, two left clamping arms and right clamping arms distributed left and right are also arranged at the lower end of the battery holder. The left clamping arm and the right clamping arm both protrude outside the installation groove, and the left clamping arm and the right clamping arm sandwich and fix the part of the battery protruding outside the installation groove to limit the battery in the installation groove.

[0016] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art: The housing in the present utility model is in a straight cylinder shape, making the overall size of the present utility model relatively small, especially the width of the upper end is small, and the space it needs to occupy is relatively small, so that it is extremely convenient to carry and store; and in the present utility model, the top cover, the upper housing, the metal mesh ring, the lower housing, and the bottom cover are butted in sequence from top to bottom to form the housing, and its assembly structure is stable and the appearance is simple, and the decorative effect can be enhanced through the metal mesh ring; and the housing uses the metal mesh ring as the boundary to set the lower part of the housing as a hand-held part for people to hold, which plays a demarcation function, enabling users to clearly know the position of the hand-held part, so as to quickly hold the hand-held part to hold the housing, and it is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2It is a cross-sectional view of the present utility model;

[0019] Figure 3 It is a perspective view of the air duct bracket of the present utility model;

[0020] Figure 4 It is an exploded perspective view of the air duct bracket of the present utility model;

[0021] Figure 5 It is an assembly drawing of the air duct bracket and the air supply component of the present utility model;

[0022] Figure 6 It is a perspective view of the second air duct bracket of the present utility model;

[0023] Figure 7 It is an assembly drawing of the air supply component and the metal mesh ring of the present utility model;

[0024] Figure 8 It is a perspective view of the high-speed motor of the present utility model;

[0025] Figure 9 It is an assembly drawing of the air supply component and the metal mesh ring of the present utility model;

[0026] Figure 10 It is a perspective view of the high-speed motor from another angle of the present utility model;

[0027] Figure 11 It is a process drawing of the assembly of the present utility model;

[0028] Figure 12 It is an exploded perspective view of the present utility model;

[0029] Figure 13 It is an assembly drawing of the circuit board, battery and battery holder of the present utility model;

[0030] Figure 14 It is an assembly drawing of the circuit board, battery and battery holder from another angle of the present utility model. Detailed implementation manners

[0031] The present utility model will be further described below in conjunction with specific embodiments and the drawings.

[0032] See Figures 1-14 As shown, it is a portable high-speed fan, which includes a housing 1, an air supply component 2, a battery 3 for power supply, an air duct bracket 4, and a circuit board 5 electrically connected to the battery 3 and the air supply component 2.

[0033] The housing 1 is in a straight cylinder shape and includes a cylindrical upper housing 11, a cylindrical lower housing 12, a metal mesh ring 6, a top cover 13, and a bottom cover 14. After the air duct bracket 4 is fixed to the upper end of the air supply component 2, the whole is inlaid and installed in the inner cavity of the upper housing 11. The top cover 13 is fixed to the upper end of the air duct bracket 4 and covers the upper port of the upper housing 11. The battery 3 and the circuit board 5 are installed in a battery holder 51. The upper end of the battery holder 51 is fixed to the lower end of the air supply component 2. The metal mesh ring 6 is wrapped and fixed around the air supply component 2 and is butted against the lower end of the upper housing 11. The lower housing 12 is sleeved around the battery holder 51 and is butted against the lower end of the metal mesh ring 6. The bottom cover 14 is fixed to the lower end of the battery holder 51 and covers the lower port of the lower housing 12. The lower housing 12 is provided with a hand-held part 102 for a person to hold. The housing 1 in the present utility model is in a straight cylinder shape, making the overall size of the present utility model relatively small, especially the width of the upper end is small, and the space it needs to occupy is relatively small, so that it is extremely convenient to carry and store. Moreover, in the present utility model, the top cover 13, the upper housing 11, the metal mesh ring 6, the lower housing 12, and the bottom cover 14 are butted in sequence from top to bottom to form the housing 1, whose assembly structure is stable and the appearance is simple, and the decorative effect can be enhanced through the metal mesh ring 6. And the housing 1 takes the metal mesh ring 6 as the boundary to set the lower part of the housing 1 as the hand-held part 102 for a person to hold, which plays a demarcation function, enabling the user to clearly know the position of the hand-held part 102, so as to quickly hold the hand-held part 102 to hold the housing 1, and it is more convenient to use.

[0034] The metal mesh ring 6 has air inlet holes 101 adapted to the air supply component 2. The air duct bracket 4 is provided with an air duct 40 adapted to the air supply component 2, and the upper housing 11 is provided with an air outlet 103 adapted to the air duct 40. When the air supply component 2 works, the outside air is drawn in through the air inlet holes 101 to form wind, and the wind is discharged from the air outlet 103 after passing through the air duct 40, so as to achieve the function of cooling and reducing temperature.

[0035] In the present utility model, the metal mesh ring 6 covers the air inlet 210, so that the relatively large air inlet 210 can be prevented from being exposed outside. And the metal mesh ring 6 is provided with a plurality of air inlet holes 101 communicating with the air inlet 210. The air inlet is realized through the air inlet holes 101, and the size of the air inlet holes 101 of the metal mesh ring 6 is relatively small, so that foreign objects can be effectively prevented from entering, achieving the purpose of protecting the present utility model. In addition, compared with plastic holes, the air inlet holes 101 of the metal mesh ring 6 in the present utility model have relatively less air resistance and higher air inlet efficiency.

[0036] The aperture of the air inlet hole 101 is less than 2 mm. As a preferred embodiment, the aperture of the air inlet hole 101 is set to be less than 1 mm, which can realize air inlet and effectively prevent foreign objects from entering.

[0037] The air supply component 2 includes a motor bracket 21 installed in the housing 1 and a high-speed motor 22 installed in the motor bracket 21. An air inlet 210 is provided on the outer periphery of the lower end of the motor bracket 21. The metal mesh ring 6 is fixed to the outer periphery of the lower end of the motor bracket 21 in a detachable manner and covers the air inlet 210. Since the metal mesh ring 6 can be detached and replaced, by replacing the metal mesh ring 6 with air inlet holes 101 of different sizes, different usage requirements can be met, and different decorative effects can also be achieved, thereby enhancing the market competitiveness of the present utility model.

[0038] The motor bracket 21 is cylindrical. The lower end of the motor bracket 21 has a plurality of thin rib strips 211 and a bottom plate 212 integrally connected to the lower ends of the thin rib strips 211. The air inlet 210 is formed between two adjacent thin rib strips 211, so that the air inlet 210 can be maximized, that is, the size of the air inlet 210 is set relatively large. And a wire groove 213 for accommodating the wire 220 of the high-speed motor 22 is provided on the outer side of one of the thin rib strips 211. The wire groove 213 extends upward through the upper end surface of the motor bracket 21. And the bottom plate 212 is also provided with a wire hole 214 for the wire 220 to pass through. A wire routing opening 215 corresponding to the wire hole 214 is provided on the side of the thin rib strip 211. The designs of the wire groove 213, the wire routing opening 215 and the wire hole 214 are for facilitating the routing of the wire 220 and preventing the phenomenon of the wire 220 being messy.

[0039] A strip-shaped positioning groove 216 is provided on the outer side of one of the thin rib strips 211; the metal mesh ring 6 is bent from a metal mesh into a ring shape, and after both ends are bent 90 degrees and folded in half. A bent portion 61 protruding from the outside to the inside is formed on the inner side of the metal mesh ring 6. The bent portion 61 is pressed into the strip-shaped positioning groove 216 from the outside to the inside, so that the metal mesh ring 6 is fixedly wrapped around the outer periphery of the lower end of the motor bracket 21. It is a detachable assembly and the assembly structure is stable.

[0040] The high-speed motor 22 has an air guiding channel 200 communicating the air duct 40 and the air inlet holes 101. When the high-speed motor 22 works, it can suck the outside air through the air inlet holes 101 and enter the air duct 40 through the air guiding channel 200.

[0041] The high-speed motor 22 can be a ducted fan motor.

[0042] Specifically, the high-speed motor 22 includes a cylindrical shell 221, a high-speed motor main body 223 fixed within the cylindrical shell 221 by a plurality of ribs 222, and a fan blade 224 mounted on the rotating shaft at the lower end of the high-speed motor main body 223. A wind guiding channel 200 communicating with the air inlet is formed between the outer periphery of the high-speed motor main body 223 and the inner wall of the cylindrical shell 221, and the cylindrical shell 221 is fixed within the motor bracket 21. The high-speed motor 22 has a simple structure and is equipped with the wind guiding channel 200 itself, making its assembly and use extremely convenient. Among them, the cylindrical shell 221 is also inlaid and installed inside the lower end of the air duct bracket 4, so that the wind guiding channel 200 is docked with the air duct 40. Among them, a soft rubber shock pad 23 is sleeved outside the cylindrical shell 221, and the soft rubber shock pad 23 contacts the air duct bracket 4 and the motor bracket 21. Through the design of the soft rubber shock pad 23, it can effectively reduce the vibration generated by the high-speed motor main body 223 during operation, thereby reducing noise and improving the user experience while reducing vibration.

[0043] The air supply assembly 2 is arranged at the lower end of the air duct bracket 4. The air duct bracket 4 is of an integral structure; or, the air duct bracket 4 is a split two-piece structure, which includes a first air duct frame 41 and a second air duct frame 42 that are fastened and fixed together. The first air duct frame 41 is provided with a buckle body 411, and the second air duct frame 42 is provided with a buckle ring 421. The buckle body 411 and the buckle ring 421 are fastened and fixed, which is convenient for installation. Among them, the first air duct frame 41 is also provided with a positioning flange 412, and the second air duct frame 42 is provided with a positioning groove 422 adapted to the positioning flange 412. The positioning groove 422 and the positioning flange 412 are nested and installed with each other to form a stable positioning, ensuring the stability of the assembly structure of the air duct bracket 4. In this embodiment, the air duct bracket 4 is a split two-piece structure.

[0044] The upper end of the motor bracket 21 is also nested and installed with the lower end of the air duct bracket 4 to further enhance the stability of the assembly structure.

[0045] The air duct 40 is in an L shape, an inverted L shape, or a reverse L shape, so that the air outlet 103 is arranged outside the upper end of the housing 1.

[0046] The air duct 40 includes a straight tube section 401 communicating with the air inlet hole 101, an arc section 402 connected to the straight tube section 401 and having a size smaller than that of the straight tube section 401, and a horizontal section 403 connected to the arc section 402. The horizontal section 403 communicates with the air outlet 103, and the air outlet 103 is arranged outside the upper end of the housing 1. The air supply assembly 2 is arranged at the lower end of the straight tube section 401. During operation, the air supply assembly 2 sucks the outside air from the air inlet hole 101 to form wind, and the wind enters the arc section 402 with a smaller size through the straight tube section 401. At this time, the wind will be compressed to a certain extent, which is convenient for increasing the air pressure, and then increasing the wind force. Finally, it is discharged through the horizontal section 403 and the air outlet 103, so as to blow out wind with a large wind force. At the same time, it uses the arc section 402 to convert the wind from the vertical direction to the horizontal direction. The inner wall of the arc section 402 is arc-shaped, which will not block the wind but will smoothly guide the wind, so as to ensure that a large amount of air is blown out of the air outlet 103, ensure a large amount of blown air, and high wind efficiency, which can enhance the user experience and has an excellent function of cooling and reducing temperature, making the utility model have extremely strong market competitiveness.

[0047] A grid 404 is arranged at the air outlet 103. Among them, the grid 404 can be integrally formed at the outlet of the horizontal section 403 and is a part of the air duct bracket 4. Or, the grid 404 is a separate component, which is installed and fixed at the air outlet 103 and is docked with the outlet of the horizontal section 403. In this embodiment, what is adopted is that the grid 404 is integrally formed at the outlet of the horizontal section 403 and is a part of the air duct bracket 4, with a simpler structure and no need to additionally install the grid 404.

[0048] The assembly structure of the battery holder 51, the battery 3 and the circuit board 5 is as follows: One side of the battery holder 51 has an installation groove 511, and the battery 3 is inlaid and installed in the installation groove 511, with a stable assembly structure and convenient installation. The circuit board 5 is fixed to the other side of the battery holder 51 by screws. Among them, the battery holder 51 is a plastic bracket, and several support pieces 510 are formed on the other side of the battery holder 51. The support pieces 510 support and abut against the circuit board 5, so as to ensure that the circuit board 5 is more stably positioned on the other side of the battery holder 51 and ensure the stability of the assembly structure.

[0049] In order to ensure that the battery 3 can be more stably installed in the installation groove 511, the following design is also made: Two left and right distributed left clamping arms 512 and right clamping arms 513 are further arranged at the lower end of the battery holder 51. The left clamping arm 512 and the right clamping arm 513 both protrude outside the installation groove 511, and the left clamping arm 512 and the right clamping arm 513 clamp and fix the part of the battery 3 protruding outside the installation groove 511 to limit the battery 3 in the installation groove 511. Its assembly structure is extremely stable, the structure is also simple, and the installation is convenient.

[0050] In summary, the housing 1 in the present utility model is in a straight cylinder shape, making the overall size of the present utility model relatively small. In particular, the width at the upper end is small, and the space it requires is relatively small, so that it is extremely convenient to carry and store. Moreover, the top cover 13, the upper housing 11, the metal mesh ring 6, the lower housing 12, and the bottom cover 14 in the present utility model are butt-jointed in sequence from top to bottom to form the housing 1. Its assembly structure is stable and the appearance is simple, and the decorative effect can be enhanced through the metal mesh ring 6. And the housing 1 uses the metal mesh ring 6 as the boundary to set the lower part of the housing 1 as the hand-held part 102 for people to hold. It plays a demarcating function, enabling users to clearly know the position of the hand-held part 102, so as to quickly hold the hand-held part 102 to hold the housing 1, which is relatively convenient to use.

[0051] Certainly, the above is only a specific embodiment of the present utility model and does not limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the patent application of the present utility model should be included within the scope of the patent application of the present utility model.

Claims

1. A portable high-speed fan, which comprises a housing (1), a air supply assembly (2), a battery (3) for power supply, an air duct bracket (4), and a circuit board (5) electrically connected to the battery (3) and the air supply assembly (2), and is characterized in that: The housing (1) is in a straight cylinder shape, and comprises a cylindrical upper housing (11), a cylindrical lower housing (12), a metal mesh ring (6), a top cover (13) and a bottom cover (14); after the air duct bracket (4) is fixed to the upper end of the air supply assembly (2), the whole is inlaid and installed in the inner cavity of the upper housing (11), the top cover (13) is fixed to the upper end of the air duct bracket (4) and seals the upper port of the upper housing (11); the battery (3) and the circuit board (5) are installed in a battery holder (51), the upper end of the battery holder (51) is fixed to the lower end of the air supply assembly (2), the metal mesh ring (6) is wrapped and fixed around the air supply assembly (2) and is butted against the lower end of the upper housing (11); the lower housing (12) is sleeved around the battery holder (51) and is butted against the lower end of the metal mesh ring (6), and the bottom cover (14) is fixed to the lower end of the battery holder (51) and seals the lower port of the lower housing (12); the lower housing (12) is provided with a hand-held part (102) for a person to hold.

2. The portable high-speed fan according to claim 1, wherein: The metal mesh ring (6) has air inlet holes (101) adapted to the air supply assembly (2), the air duct bracket (4) is provided with an air duct (40) adapted to the air supply assembly (2), and the upper housing (11) is provided with an air outlet (103) adapted to the air duct (40). When the air supply assembly (2) works, outside air is drawn in through the air inlet holes (101) to form wind, and the wind is discharged from the air outlet (103) after passing through the air duct (40).

3. The portable high-speed fan according to claim 2, wherein: The air supply assembly (2) includes a motor bracket (21) installed in the housing (1) and a high-speed motor (22) installed in the motor bracket (21). An air inlet (210) is arranged on the outer periphery of the lower end of the motor bracket (21). The metal mesh ring (6) is detachably fixed to the outer periphery of the lower end of the motor bracket (21) and covers the air inlet (210).

4. The portable high-speed fan according to claim 3, characterized in that: The motor bracket (21) is in a cylindrical shape. The lower end of the motor bracket (21) has a plurality of thin rib strips (211) and a bottom plate (212) integrally connected to the lower ends of the thin rib strips (211). The air inlet (210) is formed between two adjacent thin rib strips (211). A wire groove (213) for accommodating a wire (220) of the high-speed motor (22) is arranged on the outer side of one of the thin rib strips (211). The wire groove (213) extends upward through the upper end surface of the motor bracket (21). The bottom plate (212) is also provided with a wire hole (214) for the wire (220) to pass through. A wire passing opening (215) corresponding to the wire hole (214) is arranged on the side of the thin rib strip (211).

5. The portable high-speed fan according to claim 4, characterized in that: A strip-shaped positioning groove (216) is arranged outside one thin rib (211); the metal mesh ring (6) is formed by bending a metal mesh into a ring shape, and both ends are bent at 90 degrees and then folded in half. An inwardly protruding bending portion (61) is formed on the inner side of the metal mesh ring (6), and the bending portion (61) is pressed into the strip-shaped positioning groove (216) from outside to inside, so that the metal mesh ring (6) is fixedly wrapped around the outer periphery of the lower end of the motor bracket (21).

6. The portable high-speed fan according to any one of claims 2-5, characterized in that: The air duct (40) includes a straight cylinder section (401) communicating with the air inlet hole (101), an arc section (402) connected to the straight cylinder section (401) and having a size smaller than that of the straight cylinder section (401), and a horizontal section (403) connected to the arc section (402). The horizontal section (403) communicates with the air outlet (103), and the air outlet (103) is arranged outside the upper end of the housing (1); the air supply component (2) is arranged at the lower end of the straight cylinder section (401).

7. The portable high-speed fan according to any one of claims 3-5, characterized in that: The upper end of the motor bracket (21) is also nested and installed with the lower end of the air duct bracket (4). The high-speed motor (22) has a wind guiding channel (200) communicating the air duct (40) with the air inlet hole (101), and an air inlet (210) communicating with the air inlet hole (101) is arranged at the lower end of the motor bracket (21).

8. The portable high-speed fan according to claim 7, wherein: The high-speed motor (22) includes a cylindrical shell (221), a high-speed motor main body (223) fixed in the cylindrical shell (221) through a plurality of ribs (222), and a fan blade (224) installed on the rotating shaft at the lower end of the high-speed motor main body (223). A wind guiding channel (200) communicating with the air inlet is formed between the outer periphery of the high-speed motor main body (223) and the inner wall of the cylindrical shell (221). The cylindrical shell (221) is fixed in the motor bracket (21). Among them, the cylindrical shell (221) is also inlaid and installed in the lower end of the air duct bracket (4) so that the wind guiding channel (200) is docked with the air duct (40). Among them, a soft rubber shock pad (23) is sleeved outside the cylindrical shell (221), and the soft rubber shock pad (23) contacts the air duct bracket (4) and the motor bracket (21).

9. The portable high-speed fan according to any one of claims 1-5, characterized in that: One side of the battery holder (51) has an installation groove (511), the battery (3) is inlaid and installed in the installation groove (511), and the circuit board (5) is fixed to the other side of the battery holder (51) by screws.

10. The portable high-speed fan according to claim 9, wherein: Two left clamping arms (512) and right clamping arms (513) distributed left and right are further arranged at the lower end of the battery holder (51). The left clamping arm (512) and the right clamping arm (513) both protrude outside the installation groove (511), and the left clamping arm (512) and the right clamping arm (513) clamp and fix the part of the battery (3) protruding outside the installation groove (511) to limit the battery (3) in the installation groove (511).

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