Air duct mechanism based on high-speed fan and handheld high-speed fan

Abstract

The utility model discloses an air duct mechanism based on a high-speed fan and a handheld high-speed fan, and relates to the technical field of fans, the air duct mechanism comprises an air duct shell assembly and a high-speed fan assembly; a cylindrical air inlet and outlet channel is defined by an inner cavity of the air duct shell assembly and extends in the linear direction, and the two ends of the air inlet and outlet channel are an air inlet and an air outlet of the air duct shell assembly respectively. The high-speed fan assembly is contained and fixed in the air duct shell assembly and used for driving airflow to enter the air inlet and outlet channel from the air inlet of the air duct shell assembly and jet out from the air outlet of the air duct shell assembly. The utility model mainly solves the problem of how to provide a reasonable and efficient air duct for a high-speed motor to form a high-speed fan. Compared with the prior art, the high air outlet pressure can be obtained, a reasonable and efficient air duct can be provided for a high-speed motor, then a high-speed fan is formed, and besides basic air outlet and cooling functions, the high-speed fan further has the extended functions of blowing and sucking dust, drying hair, drying hair for pets, assisting in making fire and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an air duct mechanism based on a high-speed fan and a handheld high-speed fan. Background Art

[0002] Thanks to the development of battery miniaturization technology, motor miniaturization technology and intelligent electronic control device technology, more and more portable fans are manufactured and used. Today, there are many types of portable fans, such as handheld fans, neck fans, pocket fans and table clip fans.

[0003] The above-mentioned portable fan usually adopts a small DC motor to drive the fan blades to rotate to achieve the air outlet function, or directly adopts a small DC turbine fan to also achieve the air outlet function.

[0004] However, the motor speed of portable fans in the prior art is generally not high, and they can only achieve basic air outlet functions, but are difficult to complete extended functions such as vacuuming, drying hair, drying pets' hair, and assisting in making fire.

[0005] In summary, how to provide a reasonable and efficient air duct for a high-speed motor to form a high-speed fan has become an urgent problem to be solved. Utility Model Content

[0006] The utility model aims to provide an air duct mechanism based on a high-speed fan and a handheld high-speed fan, which can provide a reasonable and efficient air duct for a high-speed motor.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a duct mechanism based on a high-speed fan, which includes an duct shell assembly and a high-speed fan assembly; the inner cavity of the duct shell assembly defines a cylindrical air inlet and outlet channel, and the air inlet and outlet channel extends in a straight line, and the two ends of the air inlet and outlet channel are respectively the air inlet and the air outlet of the duct shell assembly; the high-speed fan assembly is accommodated and fixed in the duct shell assembly, and is used to drive the airflow to enter the air inlet and outlet channel from the air inlet of the duct shell assembly, and to eject from the air outlet of the duct shell assembly.

[0008] In the above technical solution, the air duct shell assembly includes a main air duct shell component, an outlet air duct shell component fixed at one end of the main air duct shell component, and an air inlet grille component fixed at the other end of the main air duct shell component; the air inlet grille component is located at the air inlet of the air duct shell assembly, and the outlet end of the outlet air duct shell component is the air outlet of the air duct shell assembly; the high-speed fan assembly is accommodated in the main air duct shell component of the air duct shell assembly, and the outlet air duct shell component and the air inlet grille component respectively press against the high-speed fan assembly from both ends to fix the high-speed fan assembly.

[0009] In the above technical solution, the high-speed fan assembly includes a high-speed motor and fan blades integrated in the housing of the high-speed motor; the high-speed motor can drive the fan blades to rotate.

[0010] In the above technical solution, a rotation buckle groove is formed on the inner wall of the main air duct shell component; a rotation buckle rib matching the rotation buckle groove is formed on the outer ring of the air intake grille component; the rotation buckle rib of the air intake grille component is buckled into the rotation buckle groove of the main air duct shell component to fix the air intake grille component to one end of the main air duct shell component.

[0011] In the above technical solution, a locking buckle tooth is formed in the rotating buckle groove of the main air duct shell component; a locking buckle groove matching the locking buckle tooth is formed at the rotating buckle rib of the air intake grille component; when the rotating buckle rib of the air intake grille component is buckled into the rotating buckle groove of the main air duct shell component, the locking buckle tooth of the main air duct shell component is buckled into the locking buckle groove of the air intake grille component.

[0012] In the above technical solution, the air duct shell assembly further includes an air outlet grille component, and the air outlet grille component covers the outlet end of the air outlet duct shell component.

[0013] In the above technical solution, a buckle groove running through the air outlet duct shell component is formed at the air outlet duct shell component; a first buckle claw matching the buckle groove is formed at the inner wall of the main air duct shell component; a second buckle claw matching the buckle groove is formed at the outer ring of the air outlet grille component; at least a portion of the air outlet duct shell component penetrates into the main air duct shell component, and the first buckle claw of the main air duct shell component buckles the buckle groove of the air outlet duct shell component; the air outlet grille component penetrates into the air outlet duct shell component, and the second buckle claw of the air outlet grille component buckles the buckle groove of the air outlet duct shell component.

[0014] In the above technical scheme, the air duct mechanism based on the high-speed fan of the utility model also includes a lighting component, which includes a lighting circuit board and a condenser; the lighting circuit board is equipped with lamp beads; an embedding groove is formed on the air outlet grille component of the air duct shell component, and a third buckle is formed on the inner wall of the embedding groove; the condenser and the lighting circuit board are sequentially placed in the embedding groove of the air outlet grille component, so that the lamp beads on the lighting circuit board and the condenser are aligned with each other, and the third buckle buckles the lighting circuit board, thereby fixing the condenser and the lighting circuit board in the embedding groove of the air outlet grille component.

[0015] In the above technical scheme, the air duct mechanism based on the high-speed fan of the utility model also includes an air collecting hood assembly, and the air collecting hood assembly includes a main air collecting hood and an air outlet nozzle connected in sequence; the outlet end of the air outlet duct shell component of the air duct shell assembly is provided with a first thread, and the main air collecting hood of the air collecting hood assembly is provided with a second thread, and the second thread of the main air collecting hood cooperates with the first thread of the air outlet duct shell component to connect the air collecting hood assembly to the outlet end of the air outlet duct shell component.

[0016] A handheld high-speed fan, comprising the above-mentioned air duct mechanism based on the high-speed fan; it also comprises a handheld shell, a main control circuit board, a key circuit board and a battery; the main control circuit board, the key circuit board and the battery are all accommodated in the handheld shell, and the high-speed fan assembly, the key circuit board and the battery are electrically connected to the main control circuit board respectively; the main control circuit board is equipped with a charging interface, and the charging interface on the main control circuit board protrudes from the handheld shell; the key circuit board is equipped with a switch, and a key is embedded in the handheld shell, the key on the handheld shell and the switch on the key circuit board are aligned with each other, and when the key is pressed, the switch can be triggered; the handheld shell and the air duct shell assembly are fixedly connected to each other.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model is based on the air duct mechanism of the high-speed fan. The inner cavity of the air duct shell assembly defines a cylindrical air inlet and outlet channel extending in a straight line. The high-speed fan assembly can drive the airflow to flow along the air inlet and outlet channel to generate a high-speed airflow and prevent the high-speed airflow from dispersing everywhere, thereby obtaining a higher air outlet pressure. In this way, a reasonable and efficient air duct can be provided for the high-speed motor, thereby forming a high-speed fan.

[0019] 2. The handheld high-speed fan of the utility model can eject high-speed airflow. In addition to the basic functions of air outlet and cooling, it also has extended functions such as blowing and vacuuming, drying hair, drying hair for pets, and assisting in making fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional view of the air duct mechanism based on the high-speed fan of the utility model.

[0021] Figure 2 It is an exploded view of the air duct mechanism based on the high-speed fan of the utility model.

[0022] Figure 3 This is a view of the connection structure between the main air duct shell component and the air intake grille component in the utility model.

[0023] Figure 4It is a three-dimensional view of the handheld high-speed fan of the utility model.

[0024] Figure 5 This is an exploded view of the handheld high-speed fan of the present invention.

[0025] Figure 6 It is a cross-sectional view of the handheld high-speed fan of the present utility model.

[0026] The reference numerals are: 1, air duct shell assembly; 11, main air duct shell member; 111, rotating buckle groove; 112, locking buckle tooth; 113, first buckle claw; 12, air outlet air duct shell member; 121, buckle groove; 122, first thread; 13, air inlet grille member; 131, rotating buckle rib; 132, locking buckle groove; 14, air outlet grille member; 141, second buckle claw; 142, embedded groove; 143, third buckle claw; 2, high-speed fan assembly ; 21. High-speed motor; 22. Fan blades; 3. Lighting assembly; 31. Lighting circuit board; 311. Lamp beads; 32. Spotlight; 4. Wind collecting hood assembly; 41. Main wind collecting hood; 411. Second thread; 42. Air outlet; 5. Handheld housing; 51. Button; 6. Main control circuit board; 61. Charging port; 7. Button circuit board; 71. Switch; 8. Battery; 10. Air inlet and outlet channels; 20. Air inlet; 30. Air outlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The present embodiment provides an air duct mechanism based on a high-speed fan, which can be applied to air-discharging electrical appliances such as portable fans, fans, and hair dryers to achieve an air-discharging function.

[0029] See also Figure 1 , Figure 2 as well as Figure 6 The air duct mechanism based on the high-speed fan of this embodiment includes an air duct shell component 1 and a high-speed fan component 2.

[0030] Among them, the air duct shell component 1 is used to provide a structural basis and a supporting basis for the air duct mechanism based on the high-speed fan of this embodiment, and the high-speed fan component 2 is used to provide a functional basis for air outlet for the air duct mechanism based on the high-speed fan of this embodiment.

[0031] The inner cavity of the air duct shell assembly 1 defines a cylindrical air inlet and outlet channel 10, and the air inlet and outlet channel 10 extends in a straight line, and the two ends of the air inlet and outlet channel 10 are respectively the air inlet 20 and the air outlet 30 of the air duct shell assembly 1; the high-speed fan assembly 2 is accommodated and fixed in the air duct shell assembly 1, and is used to drive the air flow from the air inlet 20 of the air duct shell assembly 1 into the air inlet and outlet channel 10, and eject from the air outlet 30 of the air duct shell assembly 1.

[0032] See also Figure 2 and Figure 6 Specifically, the air duct shell assembly 1 includes a main air duct shell component 11, an air outlet air duct shell component 12 fixed at one end of the main air duct shell component 11, and an air inlet grille component 13 fixed at the other end of the main air duct shell component 11; wherein the main air duct shell component 11 is a cylindrical shell made of engineering plastic material, the air outlet air duct shell component 12 is also a cylindrical shell made of engineering plastic material, and the air inlet grille component 13 is a circular plate-shaped mesh grille component made of engineering plastic material; the air inlet grille component 13 is located at the air inlet 20 of the air duct shell assembly 1, and the outlet end of the air outlet air duct shell component 12 is the air outlet 30 of the air duct shell assembly 1; the high-speed fan assembly 2 is accommodated in the main air duct shell component 11 of the air duct shell assembly 1, and the air outlet air duct shell component 12 and the air inlet grille component 13 respectively press against the high-speed fan assembly 2 from both ends to fix the high-speed fan assembly 2.

[0033] Specifically, the high-speed fan assembly 2 includes a high-speed motor 21 (specifically a DC high-speed motor with a rotation speed of 40000RPM-120000RPM), and a fan blade 22 integrated in the housing of the high-speed motor 21; specifically, the high-speed motor 21 has a cylindrical metal housing, and the fan blade 22 is accommodated in the metal housing; wherein the fan blade 22 is a fan blade made of metal or engineering plastic material, and a plurality of small blades are arranged on the outer edge of the hub to quickly drive the airflow; the high-speed motor 21 can drive the fan blade 22 to rotate, that is, the fan blade 22 is sleeved on the rotating shaft of the high-speed motor 21.

[0034] See also Figure 2 and Figure 3Specifically, a rotation buckle groove 111 is formed at the inner wall of the main air duct shell component 11, and the rotation buckle groove 111 is integrally formed at the inner wall of the main air duct shell component 11; a rotation buckle rib 131 matching the rotation buckle groove 111 is formed at the outer ring of the air inlet grille component 13, and the rotation buckle rib 131 is integrally formed at the outer ring of the air inlet grille component 13; the rotation buckle rib 131 of the air inlet grille component 13 is buckled into the rotation buckle groove 111 of the main air duct shell component 11 to fix the air inlet grille component 13 to one end of the main air duct shell component 11; in this embodiment, it is necessary to place the air inlet grille component 13 into the main air duct shell component 11 from the end of the main air duct shell component 11 away from the rotation buckle groove 111, and rotate the air inlet grille component 13 so that the rotation buckle rib 131 of the air inlet grille component 13 is buckled into the rotation buckle groove 111 of the main air duct shell component 11 to achieve mutual fixation of the air inlet grille component 13 and the main air duct shell component 11.

[0035] Furthermore, a locking buckle tooth 112 is formed in the rotating buckle groove 111 of the main air duct shell component 11, and the locking buckle tooth 112 is an arc-shaped protrusion integrally formed in the rotating buckle groove 111, and a plurality of the locking buckle teeth 112 are distributed in the rotating buckle groove 111; a locking buckle groove 132 matching the locking buckle tooth 112 is formed at the rotating buckle rib 131 of the air intake grille component 13, and the locking buckle groove 132 is an arc-shaped groove integrally formed on the surface of the rotating buckle rib 131, and a plurality of the locking buckle teeth 112 are distributed on the surface of the rotating buckle rib 131; when the rotating buckle rib 131 of the air intake grille component 13 is buckled into the rotating buckle groove 111 of the main air duct shell component 11, the locking buckle tooth 112 of the main air duct shell component 11 is buckled into the locking buckle groove 132 of the air intake grille component 13, in this way, the air intake grille component 13 can be further locked, so that the air intake grille component 13 is not easily dislocated.

[0036] See also Figure 2 and Figure 6 Furthermore, the air duct shell assembly 1 also includes an air outlet grille component 14, which is a circular plate-shaped mesh component made of engineering plastic material. The air outlet grille component 14 covers the outlet end of the air outlet duct shell component 12 to prevent fingers or large foreign objects from entering the air inlet and outlet channel 10.

[0037] See also Figure 2, further specifically, a buckle groove 121 is formed at the air outlet duct shell component 12 and runs through it, specifically, the buckle groove 121 runs through the side wall of the air outlet duct shell component 12; a first buckle claw 113 matching the buckle groove 121 is formed at the inner wall of the main air duct shell component 11, and the first buckle claw 113 is integrally formed at the inner wall of the main air duct shell component 11; a second buckle claw 141 matching the buckle groove 121 is formed at the outer ring of the air outlet grille component 14, and the second buckle claw 141 is integrally formed at the outer ring of the air outlet grille component 14; at least a portion of the air outlet duct shell component 12 (specifically, the portion provided with the buckle groove 121) penetrates into the main air duct shell component 11, so that the air outlet duct shell component 12 and the main air duct shell component 11 form a nested structure, and the first buckle claw 113 of the main air duct shell component 11 A latching claw 113 latches the latching groove 121 of the air outlet duct shell component 12 to fix the air outlet duct shell component 12 and the main air outlet duct shell component 11 as a whole; the air outlet grille component 14 penetrates into the air outlet duct shell component 12, and the second latching claw 141 of the air outlet grille component 14 latches the latching groove 121 of the air outlet duct shell component 12 to fix the air outlet grille component 14 and the air outlet duct shell component 12 as a whole; by providing the latching groove 121 at the air outlet duct shell component 12, respectively cooperating with the first latching claw 113 of the main air duct shell component 11 and the second latching claw 141 of the air outlet grille component 14, the structure of the air duct shell assembly 1 is made more compact, the volume and thickness of the air duct shell assembly 1 are effectively reduced, the mechanical strength of the air duct shell assembly 1 is improved, and the molding and assembly costs of the air duct shell assembly 1 can be reduced.

[0038] Furthermore, the air duct mechanism based on the high-speed fan of the present embodiment further includes a lighting assembly 3, the lighting assembly 3 includes a lighting circuit board 31 and a condenser 32; wherein the lighting circuit board 31 is a printed circuit board (PCB), and the lighting circuit board 31 is equipped with a lamp bead 311, specifically, the lamp bead 311 is an LED lamp bead, which is mounted on the lighting circuit board 31 in the form of a patch; wherein the condenser 32 is made of glass or polymer material, which has the characteristic of condensing light; the air outlet grille component 14 of the air duct shell assembly 1 is formed with an embedding groove 14 2, and a third buckle 143 is formed at the inner wall of the embedding groove 142; the condenser 32 and the lighting circuit board 31 are sequentially placed in the embedding groove 142 of the air outlet grille component 14, so that the lamp beads 311 on the lighting circuit board 31 and the condenser 32 are aligned with each other, and the third buckle 143 buckles the lighting circuit board 31, thereby fixing the condenser 32 and the lighting circuit board 31 in the embedding groove 142 of the air outlet grille component 14; in this way, the air duct mechanism based on the high-speed fan of this embodiment can be provided with a lighting function, thereby increasing the function and use of the electrical appliance.

[0039] Furthermore, the air duct mechanism based on the high-speed fan of the present embodiment also includes an air collecting hood assembly 4, and the air collecting hood assembly 4 includes a main air collecting hood 41 and an air outlet nozzle 42 connected in sequence; wherein, the main air collecting hood 41 is an engineering plastic material component, which has a gradually narrowing inner cavity, and the air outlet nozzle 42 is also an engineering plastic material component, and it also has a gradually narrowing inner cavity, and the main air collecting hood 41 and the air outlet nozzle 42 are connected as a whole by means of threads or snaps; the outlet end of the air outlet duct shell component 12 of the air duct shell assembly 1 is provided with a first thread 122, and the main air collecting hood 41 of the air collecting hood assembly 4 is provided with a second thread 411, and the second thread 411 of the main air collecting hood 41 cooperates with the first thread 122 of the air outlet duct shell component 12 to connect the air collecting hood assembly 4 to the outlet end of the air outlet duct shell component 12; in this way, a detachable air collecting hood assembly 4 can be provided for the air duct mechanism based on the high-speed fan of the present embodiment to realize the air collecting function.

[0040] See also Figure 4-Figure 6 This embodiment also provides a handheld high-speed fan, which includes the above-mentioned air duct mechanism based on the high-speed fan, and also includes a handheld housing 5, a main control circuit board 6, a button circuit board 7 and a battery 8.

[0041] Among them, the handheld shell 5 is a shell made of engineering plastic material, which has a shape suitable for handholding; the main control circuit board 6 and the key circuit board 7 are both printed circuit boards (PCBs), wherein the main control circuit board 6 is equipped with a dedicated chip, power electronic devices and necessary peripheral circuits for driving the high-speed motor 21; the battery 8 is a rechargeable lithium battery.

[0042] The main control circuit board 6 , the key circuit board 7 and the battery 8 are all accommodated in the handheld housing 5 , and the high-speed fan assembly 2 , the key circuit board 7 and the battery 8 are electrically connected to the main control circuit board 6 respectively; in addition, the lighting circuit board 31 is also electrically connected to the main control circuit board 6 .

[0043] The main control circuit board 6 is equipped with a charging interface 61, which is a Type-C interface or a MicroUSB interface. It is mounted on the main control circuit board 6 in the form of a plug-in. The charging interface 61 on the main control circuit board 6 passes through the handheld housing 5, thereby providing a charging function for the battery 8.

[0044] A switch 71 is mounted on the key circuit board 7, and a key 51 is embedded on the handheld housing 5. The key 51 on the handheld housing 5 and the switch 71 on the key circuit board 7 are aligned with each other. When the key 51 is pressed, the switch 71 can be triggered; the key circuit board 7 outputs a signal to the main control circuit board 6 according to the short press, long press and continuous press operations of the switch 71 to realize the functions of power on and off, wind speed adjustment of the high-speed fan component 2 and opening / closing of the lighting component 3.

[0045] The handheld shell 5 and the air duct shell assembly 1 are fixedly connected to each other. In this embodiment, a screw column is provided in the handheld shell 5, and a screw seat is provided on the surface of the main air duct shell component 11 of the air duct shell assembly 1. After the screw passes through the screw column of the handheld shell 5, it is locked into the screw seat of the main air duct shell component 11. In this way, the handheld shell 5 and the air duct shell assembly 1 are fixedly connected.

[0046] When the high-speed fan assembly 2 is in operation, it can drive the airflow to flow at a high speed to form a high-speed airflow. However, the high-speed airflow tends to disperse everywhere, forming a large amount of turbulence. The traditional fan structure cannot prevent the high-speed airflow from dispersing everywhere, so the actual air pressure is insufficient, that is, the traditional fan structure is not compatible with the high-speed fan assembly 2.

[0047] The air duct mechanism based on the high-speed fan of the present embodiment, the inner cavity of the air duct shell assembly 1 defines a cylindrical air inlet and outlet channel 10 extending in a straight line, and the high-speed fan assembly 2 can drive the airflow to flow along the air inlet and outlet channel 10 to generate a high-speed airflow and prevent the high-speed airflow from dispersing in all directions, thereby obtaining a higher air outlet pressure. In this way, a reasonable and efficient air duct can be provided for the high-speed motor 21, thereby forming a high-speed fan; the handheld high-speed fan of the present embodiment can eject a high-speed airflow. In addition to the basic air outlet and cooling functions, it also has extended functions such as blowing and sucking dust, drying hair, drying hair for pets, and assisting in making a fire.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air duct mechanism based on a high-speed fan, characterized in that: It includes an air duct shell assembly and a high-speed fan assembly; The inner cavity of the air duct shell assembly defines a cylindrical air inlet and outlet passage, and the air inlet and outlet passage extends in a straight line, and the two ends of the air inlet and outlet passage are respectively the air inlet and the air outlet of the air duct shell assembly; The high-speed fan assembly is accommodated and fixed in the air duct shell assembly, and is used to drive the air flow from the air inlet of the air duct shell assembly into the air inlet and outlet channels, and eject the air from the air outlet of the air duct shell assembly.

2. The air duct mechanism based on a high-speed fan according to claim 1, characterized in that: The air duct shell assembly includes a main air duct shell component, an air outlet air duct shell component fixed to one end of the main air duct shell component, and an air inlet grille component fixed to the other end of the main air duct shell component; The air inlet grille component is located at the air inlet of the air duct shell component, and the outlet end of the air outlet air duct shell component is the air outlet of the air duct shell component; The high-speed fan assembly is accommodated in the main air duct shell component of the air duct shell component, and the air outlet air duct shell component and the air inlet grille component respectively abut against the high-speed fan assembly from both ends to fix the high-speed fan assembly.

3. The air duct mechanism based on a high-speed fan according to claim 1 or 2, characterized in that: The high-speed fan assembly includes a high-speed motor and a fan blade integrated in a housing of the high-speed motor; The high-speed motor can drive the fan blades to rotate.

4. The air duct mechanism based on a high-speed fan according to claim 2, characterized in that: A rotation buckle groove is formed on the inner wall of the main air duct shell component; The outer ring of the air intake grille component is formed with a rotation buckle rib matching the rotation buckle groove; The rotation buckle rib of the air intake grille component is buckled into the rotation buckle groove of the main air duct shell component to fix the air intake grille component at one end of the main air duct shell component.

5. The air duct mechanism based on a high-speed fan according to claim 4, characterized in that: A locking buckle tooth is formed in the rotating buckle groove of the main air duct shell component; The rotating buckle rib of the air intake grille component is formed with a locking buckle groove matching the locking buckle tooth; When the rotating buckle rib of the air intake grille component is buckled into the rotating buckle groove of the main air duct shell component, the locking buckle teeth of the main air duct shell component are buckled into the locking buckle groove of the air intake grille component.

6. The air duct mechanism based on a high-speed fan according to claim 2, 4 or 5, characterized in that: The air duct shell assembly further comprises an air outlet grille component, and the air outlet grille component covers the outlet end of the air outlet air duct shell component.

7. The air duct mechanism based on a high-speed fan according to claim 6, characterized in that: The air outlet duct shell component is formed with a buckle groove penetrating through the shell component; A first buckle claw matching the buckle groove is formed on the inner wall of the main air duct shell component; A second buckle claw matching the buckle groove is formed at the outer ring of the air outlet grille component; At least a portion of the outlet air duct shell component penetrates into the main air duct shell component, and the first buckle claw of the main air duct shell component buckles the buckle groove of the outlet air duct shell component; The air outlet grille component penetrates into the air outlet duct shell component, and the second buckle claw of the air outlet grille component buckles the buckle groove of the air outlet duct shell component.

8. The air duct mechanism based on a high-speed fan according to claim 6, characterized in that: Also included is a lighting assembly, the lighting assembly including a lighting circuit board and a condenser; The lighting circuit board is equipped with lamp beads; An embedding groove is formed on the air outlet grille component of the air duct housing assembly, and a third buckle claw is formed on the inner wall of the embedding groove; The condenser and the lighting circuit board are sequentially placed in the embedding groove of the air outlet grille component, so that the lamp beads on the lighting circuit board are aligned with the condenser, and the third claws lock the lighting circuit board, thereby fixing the condenser and the lighting circuit board in the embedding groove of the air outlet grille component.

9. The air duct mechanism based on a high-speed fan according to claim 2, 4 or 5, characterized in that: It also includes an air collecting hood assembly, which includes a main air collecting hood and an air outlet nozzle connected in sequence; The outlet end of the air outlet duct shell component of the air duct shell assembly is provided with a first thread, and the main air collecting hood of the air collecting hood assembly is provided with a second thread, and the second thread of the main air collecting hood cooperates with the first thread of the air outlet duct shell component to connect the air collecting hood assembly to the outlet end of the air outlet duct shell component.

10. A handheld high-speed fan, characterized in that: An air duct mechanism based on a high-speed fan comprising any one of claims 1 to 9; It also includes a handheld housing, a main control circuit board, a key circuit board and a battery; The main control circuit board, the key circuit board and the battery are all accommodated in the handheld housing, and the high-speed fan assembly, the key circuit board and the battery are electrically connected to the main control circuit board respectively; The main control circuit board is equipped with a charging interface, and the charging interface on the main control circuit board passes through the handheld housing; The key circuit board is equipped with a switch, the handheld housing is embedded with a key, the key on the handheld housing and the switch on the key circuit board are aligned with each other, and when the key is pressed, the switch can be triggered; The handheld housing and the air duct housing assembly are fixedly connected to each other.

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