Portable high-speed fan with replaceable air outlet head device

Abstract

The utility model discloses a portable high-speed fan with a replaceable air outlet head device, which comprises a shell, a fan assembly, a circuit board and a battery, the shell is provided with an air inlet hole, the fan assembly is vertically arranged at the upper end of the shell, and the top of the shell is provided with an air outlet; when the fan assembly works, outside air is sucked in from the air inlet hole to form air, and the air is exhausted in the vertical direction through the air outlet. The air conditioner further comprises an air outlet head device for converting the air outlet direction, the air outlet head device is provided with a reversing air duct, a horizontal air opening communicated with the reversing air duct is formed in the side face of the air outlet head device, and after the air outlet head device is detachably installed on the top of the shell, the air outlet is communicated with the reversing air duct, and air exhausted from the air outlet is guided by the reversing air duct and then is discharged out of the shell. And the air is transversely discharged from the horizontal tuyere. According to the utility model, vertical air supply or horizontal air supply can be realized, and a user can decide whether to install the air outlet head device or not according to actual use requirements so as to select vertical air supply or horizontal air supply to meet different use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of fan products, in particular to a portable high-speed fan with a replaceable air outlet device. 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 that uses electricity to drive the generation of air flow. The fan inside rotates after being powered on to form natural wind to achieve the effect of cooling. In order to facilitate people's taking, a portable hand-held fan appears on the market, which can be held in the hand to achieve the cooling effect 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 hand-held 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 is connected to the installation mechanism. Combining with the attached Figure 3 It can be seen that the above hand-held fan is in a T shape as a whole. Because the air supply part of this shaped hand-held fan is horizontally placed at the upper end of the hand-held part, the air outlet of the hand-held fan can only face one direction (i.e., the horizontal direction), which cannot meet the user's usage requirements.

[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 with a replaceable air outlet device.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions: The portable high-speed fan with a replaceable air outlet device includes a housing, a fan assembly, a circuit board, and a battery for power supply disposed in the housing. The housing is provided with air inlet holes. The fan assembly is vertically installed at the upper end of the housing, and an air outlet is provided at the top of the housing. When the fan assembly operates, it sucks in the outside air through the air inlet holes to form wind, and the wind is discharged vertically through the air outlet. It further includes an air outlet head device for changing the air outlet direction. The air outlet head device is provided with a reversing air duct, and a horizontal air outlet communicating with the reversing air duct is provided on the side of the air outlet head device. When the air outlet head device is detachably installed on the top of the housing, the air outlet is communicated with the reversing air duct, and the wind discharged from the air outlet is guided through the reversing air duct and then horizontally discharged from the horizontal air outlet.

[0007] Furthermore, in the above technical solution, the air outlet head device is fixed to the top of the housing by means of interference fit through insertion; or, the air outlet head device is fixed to the top of the housing by means of a snap-in buckle; or, the air outlet head device is fixed to the top of the housing by means of a rotary snap-fit; or, the air outlet head device is fixed to the top of the housing by means of magnetic attraction; the air outlet head device is fixed to the top of the housing by means of a threaded connection.

[0008] Furthermore, in the above technical solution, the air outlet head device includes a housing body, a wind shield cover and an air outlet frame which are installed on both sides of the upper end of the housing body and are snap-fitted and fixed together. The air outlet frame has a plurality of the above-mentioned horizontal air outlets, and the horizontal air outlets are annularly distributed. A reversing air duct is formed between the rear end of the air outlet frame, the front end of the wind shield cover and the inner wall of the housing body.

[0009] Furthermore, in the above technical solution, on both sides of the upper end of the housing body, there are provided a first installation opening and a second installation opening which penetrate the inner cavity transversely and are recessed from the outside to the inside. The air outlet frame and the wind shield cover are respectively inserted and arranged in the first installation opening and the second installation opening, and the rear end of the air outlet frame is nested and fixed with the front end of the wind shield cover.

[0010] Furthermore, in the above technical solution, the air outlet frame includes a cylindrical main frame body and an air outlet portion integrally formed on the outer periphery of the front end of the main frame body and protruding outward. The air outlet portion has a plurality of air outlets penetrating the front and rear end faces. The main frame body is inserted into the housing body and assembled with the wind shield cover. The air outlet portion is placed at the first installation opening. Among them, a first stepped groove is provided on the inner wall of the first installation opening, and the air outlet portion is inlaid and installed in the first stepped groove;

[0011] Furthermore, in the above technical solution, the wind shield cover includes a cylindrical portion and a wind shield portion integrally formed on the periphery of the rear end of the cylindrical portion and protruding outward, the front end of the cylindrical portion is nested and snap-fastened with the rear end of the main frame, and the wind shield portion covers the second mounting opening, wherein the inner wall of the second mounting opening is provided with a second step groove, and the wind shield portion is embedded and installed in the second step groove; wherein, a plurality of buckles are provided at the front end of the cylindrical portion, and the rear end of the main frame is provided with a limiting groove for inserting the buckles, and a clamping protrusion matched with the buckle is also provided in the limiting groove, and after the main frame is docked with the cylindrical portion, the buckle is inserted into the limiting groove and snap-fastened with the clamping protrusion, thereby ensuring that the main frame and the cylindrical portion are snap-fitted together and fixed to the upper end of the shell in a front-to-back clamping manner.

[0012] Furthermore, in the above technical solution, the air outlet device includes a cylinder, an air duct bracket installed in the cylinder, and a top cover installed on the upper end of the cylinder, the air duct bracket is provided with the reversing air duct, and the side of the cylinder is provided with the strip-shaped horizontal air outlet.

[0013] Furthermore, in the above technical solution, the reversing air duct includes an arc segment and a horizontal segment connected in sequence, and the horizontal segment is provided with a grid, and the grid is placed in the horizontal air outlet.

[0014] Furthermore, in the above technical solution, the outer shell is in the shape of a straight cylinder, which includes an upper shell, a metal mesh and a lower shell connected in sequence from top to bottom, wherein the metal mesh has the air inlet hole, the lower shell serves as a hand-held part, and the fan assembly is vertically installed in the upper shell; the air outlet is arranged at the upper end of the upper shell.

[0015] Furthermore, in the above technical solution, an air outlet piece is provided on the top of the outer shell, and the air outlet piece is provided with a plurality of air outlets distributed in a ring shape, and the air outlet piece is placed at the upper end of the fan assembly, and the air outlet piece is provided with a mounting position for installing the air outlet head device on the outer side of the air outlet, and after the lower end of the air outlet head device is installed in the mounting position, the outer surface of the air outlet head device is smoothly connected with the outer surface of the outer shell.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: the utility model can directly discharge the air vertically through the air outlet at the top of the housing without installing the air outlet head device, so as to achieve the purpose of vertically blowing air to the human body; the utility model can also install the air outlet head device on the top of the housing, and connect the reversing air duct of the air outlet head device to the air outlet, so that after the fan assembly works, the air discharged from the air outlet is guided by the reversing air duct and discharged horizontally from the horizontal air outlet, so as to achieve the purpose of horizontal / transverse air supply. That is to say, the utility model can realize vertical air supply or horizontal / transverse air supply. Users can decide whether to install the air outlet head device according to the actual use requirements, and then choose to use vertical air supply or horizontal / transverse air supply to meet different use requirements, making the utility model have strong market competitiveness. Brief Description of the Drawings

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

[0018] Figure 2 is a sectional view of the utility model;

[0019] Figure 3 is an exploded perspective view of the utility model;

[0020] Figure 4 is a perspective view of the air outlet member in the utility model;

[0021] Figure 5 is a perspective view of the air outlet head device of the first structure in the utility model;

[0022] Figure 6 is an exploded perspective view of the air outlet head device of the first structure in the utility model;

[0023] Figure 7 is a perspective view of the housing in the utility model;

[0024] Figure 8 is a perspective view of the air outlet frame in the utility model;

[0025] Figure 9 is a perspective view of the air outlet head device of the second structure in the utility model;

[0026] Figure 10 is a perspective view of the air outlet head device of the second structure in the utility model from another perspective;

[0027] Figure 11 is an exploded perspective view of the air outlet head device of the second structure in the utility model;

[0028] Figure 12 is a perspective view of the utility model after assembling the air outlet head device of the first structure;

[0029] Figure 13 is a cross-sectional view after the air outlet head device of the first structure of the present utility model is assembled;

[0030] Figure 14 is a perspective view after the air outlet head device of the second structure of the present utility model is assembled;

[0031] Figure 15 is a cross-sectional view after the air outlet head device of the second structure of the present utility model is assembled. Specific embodiments

[0032] The present utility model will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0033] See Figures 1-15 As shown, it is a portable high-speed fan with a replaceable air outlet head device, which includes a housing 1 and a fan assembly 2, a circuit board 3 and a battery 4 for power supply arranged in the housing 1. The housing 1 is provided with an air inlet hole 101. The fan assembly 2 is vertically installed at the upper end of the housing 1, and an air outlet 103 is arranged at the top of the housing 1. When the fan assembly 2 works, the outside air is drawn in from the air inlet hole 101 to form wind, and the wind is discharged vertically through the air outlet 103 and blown towards the human body, so as to achieve the purpose of cooling and relieving the heat.

[0034] The present utility model further includes an air outlet head device 5 for changing the air outlet direction. The air outlet head device 5 is provided with a reversing air duct 501, and a horizontal air outlet 502 communicating with the reversing air duct 501 is arranged on the side of the air outlet head device 5. When the air outlet head device 5 is detachably installed on the top of the housing 1, the air outlet 103 is communicated with the reversing air duct 501, and the wind discharged from the air outlet 103 is guided through the reversing air duct 501 and then discharged laterally from the horizontal air outlet 502. That is to say, the present utility model can choose not to install the air outlet head device 5, but directly discharge the wind vertically through the air outlet 103 at the top of the housing 1 to achieve the purpose of vertically blowing air to the human body; the present utility model can also install the air outlet head device 5 on the top of the housing 1, so that the reversing air duct 501 of the air outlet head device 5 is communicated with the air outlet 103, so that after the fan assembly 2 works, the wind discharged from the air outlet 103 is guided through the reversing air duct 501 and then discharged laterally from the horizontal air outlet 502, so as to achieve the purpose of horizontal / lateral air supply. That is to say, the present utility model can realize vertical air supply or horizontal / lateral air supply. The user can decide whether to install the air outlet head device 5 according to the actual use requirements, and then choose to use vertical air supply or horizontal / lateral air supply to meet different use requirements, making the present utility model have strong market competitiveness.

[0035] The housing 1 is in a straight cylinder shape and includes an upper housing 11, a metal mesh 12, and a lower housing 13 that are connected in sequence from top to bottom. That is to say, the housing 1 of the present utility model is set in a straight cylinder shape, making the overall size of the present utility model relatively small, especially the width is small, and the space it needs to occupy is relatively small, so that it is extremely convenient to carry.

[0036] Among them, the metal mesh 12 has the air inlet holes 101, the lower housing 13 serves as a hand-held part, and the fan assembly 2 is vertically installed in the upper housing 11; the air outlet 103 is arranged at the upper end of the upper housing 11. At the same time, the present utility model arranges the air inlet holes 101 in the middle of the housing 1 and above the hand-held part 102, which does not affect the air intake of the air inlet holes 101, that is, after the user holds the hand-held part 102, the air inlet holes 101 will not be covered, ensuring that the air inlet holes 101 can intake air normally. In addition, the metal mesh 12 not only plays the role of air intake, but also has a good decorative effect, thereby enhancing the decorative effect of the present utility model. In addition, the present utility model designs the air inlet holes 101 through the metal mesh 12, making the air inlet holes 101 metal air inlet holes, and their air resistance is relatively small, so as to better achieve air intake.

[0037] The air outlet head device 5 is fixed to the top of the housing 1 by means of interference fit through insertion; or, the air outlet head device 5 is fixed to the top of the housing 1 by means of a snap-fastening method; or, the air outlet head device 5 is fixed to the top of the housing 1 by means of a rotary snap-fastening method; or, the air outlet head device 5 is fixed to the top of the housing 1 by means of a magnetic attraction method; the air outlet head device 5 is fixed to the top of the housing 1 by means of a threaded connection method. As a preferred embodiment of this embodiment, the adopted scheme is: the air outlet head device 5 is fixed to the top of the housing 1 by means of a rotary snap-fastening method.

[0038] Among them, an air outlet member 6 is arranged at the top of the housing 1, the air outlet member 6 is provided with a plurality of the air outlets 103 distributed in a ring shape, and the air outlet member 6 is placed at the upper end of the fan assembly 2. The air outlet member 6 is provided with an installation position 61 for installing the air outlet head device 5 outside the air outlet 103. After the lower end of the air outlet head device 5 is installed in the installation position 61, the outer surface of the air outlet head device 5 is smoothly connected to the outer surface of the housing 1, thereby making the appearance of the present utility model more beautiful and not increasing the lateral width of the upper end of the housing.

[0039] A rotatable buckle groove 611 similar to an L shape is arranged inside the installation position 61. A buckle body 50 is arranged on the periphery of the lower end of the air outlet head device 5. After the lower end of the air outlet head device 5 is installed in the installation position 61 and rotated, the buckle body 50 is pressed into the horizontal section of the rotatable buckle groove 611, thereby achieving the purpose of rotary snap-fastening fixation.

[0040] The air outlet head device 5 includes at least the following two structures:

[0041] The first structure is as follows:

[0042] The spotlight device 5 includes a housing 51, and a wind shield 52 and an air outlet frame 53 which are installed on both sides of the upper end of the housing 51 and are fastened and fixed together. The air outlet frame 53 has a plurality of the horizontal air outlets 502, and the horizontal air outlets 502 are distributed in a ring shape. A reversing air duct 501 is formed between the rear end of the air outlet frame 53, the front end of the wind shield 52, and the inner wall of the housing 51. When the wind is sent out from the horizontally distributed air outlets 502 in a ring shape, the purpose of ring-shaped air supply is achieved. The air supply area is large and the air volume is large, so that a good effect of cooling and relieving heat can be achieved.

[0043] The top of the housing 51 is set to be arc-shaped and has no port.

[0044] On both sides of the upper end of the housing 51, there are a first installation opening 511 and a second installation opening 512 which penetrate the inner cavity transversely and are recessed from the outside to the inside. The air outlet frame 53 and the wind shield 52 are respectively inserted into the first installation opening 511 and the second installation opening 512, and the rear end of the air outlet frame 53 is nested and fixed with the front end of the wind shield 52. The overall design of the spotlight device 5 with this assembly structure is unique, with extremely strong aesthetic feeling and great interest.

[0045] The air outlet frame 53 includes a cylindrical main frame body 531 and an air outlet part 532 which is integrally formed on the outer periphery of the front end of the main frame body 531 and protrudes outward. The air outlet part 532 has a plurality of air outlets 103 penetrating the front and rear end faces. The main frame body 531 is inserted into the housing 51 and assembled with the wind shield 52. The air outlet part 532 is placed at the first installation opening 511. Among them, a first stepped groove 513 is provided on the inner wall of the first installation opening 511, and the air outlet part 532 is inlaid and installed in the first stepped groove 513, thereby ensuring the stability of the assembly structure. Among them, a first positioning groove 515 penetrating the first stepped groove 513 is also provided at the first installation opening 511, and a first positioning convex part 530 formed at the rear side of the air outlet part 532 is embedded in the first positioning groove 515, thereby ensuring the stability of the assembly structure.

[0046] The windshield cover 52 includes a cylindrical part 521 and a windshield part 522 integrally formed on the outer periphery of the rear end of the cylindrical part 521 and protruding outward. The front end of the cylindrical part 521 is nested and snap-fixed with the rear end of the main frame 531, and the windshield part 522 covers the second installation opening 512. Among them, a second stepped groove 514 is provided on the inner wall of the second installation opening 512, and the windshield part 522 is inlaid and installed in the second stepped groove 514, thereby ensuring the stability of the assembly structure. In addition, a second positioning groove 516 penetrating the second stepped groove 514 is also provided at the second installation opening 512, and the second positioning convex part 520 formed at the front end of the windshield part 522 is embedded in the second positioning groove 516, thereby ensuring the stability of the assembly structure.

[0047] Among them, a plurality of buckle rings 503 are provided at the front end of the cylindrical part 521, a limiting groove 504 for the buckle rings 503 to insert is provided at the rear end of the main frame 531, and a clamping convex 505 adapted to the buckle rings 503 is also provided in the limiting groove 504. After the main frame 531 is docked with the cylindrical part 521, the buckle rings 503 are inserted into the limiting groove 504 and are snap-fixed with the clamping convex 505, thereby ensuring that the main frame 531 and the cylindrical part 521 are snap-assembled together and are fixed to the upper end of the housing 51 in a front-back clamping manner.

[0048] The second structure is as follows:

[0049] The air outlet head device 5 includes a cylinder body 54, an air duct bracket 55 installed in the cylinder body 54, and a top cover 56 installed at the upper end of the cylinder body 54. The reversing air duct 501 is provided in the air duct bracket 55, and the strip-shaped horizontal air outlet 502 is provided on the side surface of the cylinder body 54.

[0050] The reversing air duct 501 includes an arc section 506 and a horizontal section 507 connected in sequence. A grid 57 is provided on the horizontal section 507. The grid 57 is placed in the horizontal air outlet 502 and is used for air supply. When the air outlet head device 5 is installed on the upper end of the outer shell 1, the lower end opening of the arc section 506 is docked with the air outlet 103.

[0051] The fan assembly 2 includes a motor bracket 21 installed in the outer shell 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 12 is fixedly covered on the outer periphery of the lower end of the motor bracket 21 and covers the air inlet 210, and the air inlet hole 101 communicates with the air inlet 210, thereby ensuring that the air inlet effect of the air inlet hole is at a better level.

[0052] The high-speed motor 22 can be a ducted fan motor.

[0053] 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 number 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. The cylindrical shell 221 is fixed within the motor bracket 21. The structure of the high-speed motor 22 is simple, and it comes with the wind guiding channel 200, making its assembly and use extremely convenient.

[0054] A soft rubber shock pad 23 is sleeved outside the cylindrical shell 221. The soft rubber shock pad 23 contacts 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 by reducing vibration.

[0055] In summary, the present utility model can directly discharge air vertically through the air outlet 103 at the top of the outer shell 1 without choosing to install the air outlet head device 5, so as to achieve the purpose of vertically blowing air on the human body; the present utility model can also install the air outlet head device 5 on the top of the outer shell 1, and make the reversing air duct 501 of the air outlet head device 5 communicate with the air outlet 103. After the fan assembly 2 operates, the air discharged from the air outlet 103 is guided by the reversing air duct 501 and discharged horizontally from the horizontal air outlet 502, thereby achieving the purpose of horizontal / horizontal and vertical air supply. That is to say, the present utility model can achieve vertical air supply or horizontal / horizontal and vertical air supply. Users can decide whether to install the air outlet head device 5 according to actual usage requirements, and then choose to use vertical air supply or horizontal / horizontal and vertical air supply to meet different usage requirements, making the present utility model highly competitive in the market.

[0056] Of course, the above are only specific embodiments of the present utility model and do not limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, characteristics, 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 with a replaceable air outlet device, which includes a housing (1), a fan assembly (2), a circuit board (3) and a battery (4) for power supply arranged in the housing (1). The housing (1) is provided with an air inlet hole (101), and is characterized in that: The fan assembly (2) is vertically installed at the upper end of the housing (1), and an air outlet (103) is provided at the top of the housing (1); when the fan assembly (2) works, it draws in the outside air from the air inlet hole (101) to form wind, and the wind is discharged vertically through the air outlet (103); It further includes an air outlet head device (5) for changing the air outlet direction. The air outlet head device (5) is provided with a reversing air duct (501), and a horizontal air outlet (502) communicating with the reversing air duct (501) is provided on the side of the air outlet head device (5). When the air outlet head device (5) is detachably installed on the top of the housing (1), the air outlet (103) is communicated with the reversing air duct (501), and the wind discharged from the air outlet (103) is guided by the reversing air duct (501) and then discharged laterally from the horizontal air outlet (502).

2. The portable high-speed fan with a replaceable air outlet device according to claim 1, characterized in that: The air outlet head device (5) is fixed to the top of the housing (1) by means of interference fit through insertion; or, the air outlet head device (5) is fixed to the top of the housing (1) by means of snap-on buckles; or, the air outlet head device (5) is fixed to the top of the housing (1) by means of rotary buckling; or, the air outlet head device (5) is fixed to the top of the housing (1) by means of magnetic attraction; the air outlet head device (5) is fixed to the top of the housing (1) by means of threaded connection.

3. The portable high-speed fan with a replaceable air outlet device according to claim 1, wherein: The air outlet head device (5) includes a housing (51), a wind shield (52) and an air outlet frame (53) which are installed on both sides of the upper end of the housing (51) and are snap-fitted and fixed together. The air outlet frame (53) has a plurality of the horizontal air outlets (502), and the horizontal air outlets (502) are annularly distributed. The reversing air duct (501) is formed between the rear end of the air outlet frame (53), the front end of the wind shield (52) and the inner wall of the housing (51).

4. The portable high-speed fan with a replaceable air outlet device according to claim 3, characterized in that: On both sides of the upper end of the housing (51), there are provided a first installation opening (511) and a second installation opening (512) which horizontally penetrate its inner cavity and are recessed from the outside to the inside. The air outlet frame (53) and the wind shield (52) are respectively inserted and arranged in the first installation opening (511) and the second installation opening (512), and the rear end of the air outlet frame (53) is nested and fixed with the front end of the wind shield (52).

5. The portable high-speed fan with a replaceable air outlet device according to claim 4, characterized in that: The air outlet frame (53) includes a cylindrical main frame body (531) and an air outlet part (532) integrally formed on the outer periphery of the front end of the main frame body (531) and protruding outward. The air outlet part (532) has a plurality of air outlets (103) penetrating the front and rear end faces. The main frame body (531) is inserted into the housing (51) and assembled with the wind shield (52), and the air outlet part (532) is placed at the first installation opening (511). Among them, a first stepped groove (513) is provided on the inner wall of the first installation opening (511), and the air outlet part (532) is inlaid and installed in the first stepped groove (513).

6. The portable high-speed fan with a replaceable air outlet device according to claim 5, characterized in that: The windshield cover (52) comprises a cylindrical portion (521) and a windshield portion (522) integrally formed on the periphery of the rear end of the cylindrical portion (521) and protruding outwards, the front end of the cylindrical portion (521) is nested and snap-fastened with the rear end of the main frame (531), and the windshield portion (522) covers the second mounting opening (512), wherein the inner wall of the second mounting opening (512) is provided with a second stepped groove (514), and the windshield portion (522) is embedded and installed in the second stepped groove (514); wherein the front end of the cylindrical portion (521) is provided with a A plurality of buckles (503) are provided. A limiting groove (504) for inserting the buckle (503) is provided at the rear end of the main frame (531). A clamping protrusion (505) adapted to the buckle (503) is also provided in the limiting groove (504). After the main frame (531) is docked with the cylindrical portion (521), the buckle (503) is inserted into the limiting groove (504) and is clamped and fixed with the clamping protrusion (505), thereby ensuring that the main frame (531) and the cylindrical portion (521) are clamped together and fixed to the upper end of the shell (51) in a front-to-back clamping manner.

7. The portable high-speed fan with a replaceable air outlet device according to claim 1, wherein: The air outlet device (5) comprises a cylinder (54), an air duct support (55) installed in the cylinder (54), and a top cover (56) installed on the upper end of the cylinder (54); the air duct support (55) is provided with the reversing air duct (501); and the side surface of the cylinder (54) is provided with the strip-shaped horizontal air outlet (502).

8. The portable high-speed fan with a replaceable air outlet device according to claim 7, wherein: The reversing air duct (501) comprises an arc segment (506) and a horizontal segment (507) connected in sequence, and a grid (57) is provided on the horizontal segment (507), and the grid (57) is placed in the horizontal air outlet (502).

9. A portable high-speed fan with a replaceable air outlet device according to any one of claims 1-7, characterized in that: The housing (1) is in the shape of a straight cylinder, and comprises an upper shell (11), a metal mesh (12) and a lower shell (13) which are connected in sequence from top to bottom, wherein the metal mesh (12) has the air inlet hole (101), the lower shell (13) serves as a handheld portion, and the fan assembly (2) is vertically mounted in the upper shell (11); the air outlet (103) is arranged at the upper end of the upper shell (11).

10. The portable high-speed fan with a replaceable air outlet device according to claim 9, characterized in that: An air outlet member (6) is provided at the top of the housing (1), the air outlet member (6) being provided with a plurality of air outlets (103) distributed in a ring shape, and the air outlet member (6) is placed at the upper end of the fan assembly (2), and a mounting position (61) for mounting the air outlet head device (5) is provided on the outer side of the air outlet (103), and after the lower end of the air outlet head device (5) is mounted in the mounting position (61), the outer surface of the air outlet head device (5) is smoothly connected to the outer surface of the housing (1).

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