Inside and outside inclined accelerated airflow mixed flow generator
By designing an internal and external inclined acceleration airflow mixer and adopting a dual-speed air duct structure, the problem of existing fans being unable to blow air at long distances is solved, and a larger air volume and air supply distance is achieved, effectively providing cooling effect.
Patent Information
- Application Number
- CN202421994812.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-08-16
AI Technical Summary
Existing fans cannot blow air at a slightly further distance, cannot cool down users, and there is a lack of effective solutions on the market.
The internal and external inclined accelerating airflow mixing generator is adopted to form a dual-speed air duct structure through the design of the motor mount, the motor, the fan blade, the first housing and the second housing. The first speed-increasing air duct is pressurized by the first pressurized sheet, and the second speed-increasing air duct is further pressurized by the second pressurized sheet, increasing the air volume and air supply distance.
The double pressurization of the air flow is achieved, the air volume and air supply distance is increased, and the cooling effect can be effectively provided to the user.
Smart Images
Figure CN222848377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fans, in particular to an internal and external oblique accelerated airflow mixed flow generator. Background Art
[0002] A fan is an electrical appliance that uses an electric motor to drive the blades to rotate to accelerate the circulation of air.
[0003] Most of the fans currently on the market use a structure in which a motor and fan blades are arranged inside a shell to achieve a straight-in and straight-out blowing mode.
[0004] This structure has the advantages of simple structure, small air volume loss and unchanged air flow direction, so it is widely used in the market. However, it also has obvious disadvantages. Due to its low wind pressure and short air supply distance, it cannot blow air at a slightly longer distance and cannot cool down the user. There is also a lack of effective solutions to this problem on the market.
[0005] Therefore, improvements need to be made. Utility Model Content
[0006] The technical problem solved by the utility model is to provide an internal and external oblique accelerated airflow mixed flow generator for the defects existing in the above-mentioned prior art, so as to solve the problems raised in the above-mentioned background technology.
[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: an internal and external oblique accelerated airflow mixing generator, comprising: a motor mounting seat, the outer wall of the motor mounting seat radially increases from the air inlet end to the air outlet end to form a pressurized surface; a motor, the motor is arranged on the motor mounting seat; fan blades, the fan blades are arranged on the output end of the motor; a first shell, the first shell is located at the air inlet end; the first shell includes a first outer ring and one or more first pressurized sheets; the first pressurized sheets are distributed on the inner wall of the first outer ring and extend to connect the outer peripheral edge of the motor mounting seat; the inner wall of the first outer ring, the first pressurized sheet and the motor mounting seat form a first speed-increasing air duct, the first speed-increasing air duct is increased by the first pressurized sheet, resulting in a smaller radial ventilation area, so as to pressurize and increase the speed of the airflow; a second shell, the second shell is located at the air outlet end and connected to the first shell; the second shell includes a second outer ring, a pressurized seat and one or more second pressurized sheets; the The second pressurizing sheet is distributed on the inner wall of the second outer ring and extends to be connected to the outer peripheral edge of the boost seat, the inner wall of the second outer ring radially contracts from the air inlet end to the air outlet end to form an outer wind guide surface to pressurize and increase the speed of the airflow; the outer wall of the boost seat radially increases from the air inlet end to the air outlet end to form an inner wind guide surface to pressurize and increase the speed of the airflow; the inner wall of the second outer ring, the second pressurizing sheet and the boost seat form a second speed-increasing air duct, and the radial ventilation area of the second speed-increasing air duct is reduced due to the increase of the second pressurizing sheet, so as to pressurize and increase the speed of the airflow; wherein, the motor drives the fan blades to rotate, generates negative pressure at the air inlet end, and guides the airflow to the first speed-increasing air duct; the airflow is pressurized and guided to the second speed-increasing air duct through the first pressurizing sheet on the first outer ring and the pressurizing surface of the motor mounting seat; the airflow is pressurized and blown out through the second pressurizing sheet in the second speed-increasing air duct, so that the air volume and air supply distance are increased after the airflow is accelerated through the first speed-increasing air duct and the second speed-increasing air duct.
[0008] Furthermore, the first pressure sheet is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure sheet of the first speed-increasing air duct guides the airflow forward or gathers the airflow in the reverse direction to the second speed-increasing air duct, and the second pressure sheet is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure sheet gathers the airflow in the reverse direction or blows it out in the forward direction, thereby achieving the effect of pressurizing and gathering the airflow.
[0009] Furthermore, the motor includes a stator and a rotor, the stator is fixed on the motor mounting seat, the rotor is arranged on the fan blades, and the rotor is sleeved on the stator.
[0010] Furthermore, the motor mounting seat is provided with a convex column which extends axially and is hollow inside; the fan blades include a hub portion and blades evenly arranged on the outer circumferential surface of the hub portion, and the hub portion has a receiving portion which is recessed inwardly; the stator includes an iron core inserted on the convex column and a coil wound on the iron core; the rotor includes a rotating shaft axially arranged on the receiving portion and a magnetic ring attached to the radial inner wall of the receiving portion, and the rotating shaft is inserted in the convex column.
[0011] Furthermore, it includes a driving circuit board, which is electrically connected to the motor to drive the motor to drive the fan blades to rotate, and the airflow is accelerated through the first speed-increasing air duct and the second speed-increasing air duct in sequence and then blown out.
[0012] Furthermore, it includes an outer shell, which is provided with a hollow accommodating portion along the air inlet end to the air outlet end, and at least a portion of the accommodating portion extends to the first shell or the second shell; to form a package that wraps the first shell or the first shell and the second shell, or to form a package contained in the first shell or the first shell and the second shell.
[0013] Furthermore, the blades of the fan blades are distributed counterclockwise from the air inlet end to the air outlet end.
[0014] Furthermore, it includes a power supply interface for providing electric power, and the power supply interface is electrically connected to the driving circuit board.
[0015] Furthermore, the housing is provided with an air inlet grille at the air inlet end, and the air inlet grille includes connecting strips evenly distributed around the circumference, and the connecting strips radially extend and connect to the inner wall of the housing to form a gap to prevent foreign matter from entering.
[0016] Furthermore, it includes a battery, and the battery is electrically connected to the power supply interface so that the battery can be charged and store electricity.
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] 1. A double-speed-increasing air duct form is adopted. When the airflow passes through the first speed-increasing air duct, the first pressure plate arranged in the first speed-increasing air duct causes the radial ventilation area to become smaller to pressurize the airflow. The first speed-increasing air duct is located at the air inlet end, thereby being able to absorb the surrounding air to increase the air volume. At the same time, the motor mounting seat is designed to be radially enlarged from the air inlet end to the air outlet end to form a pressure surface, which further pressurizes and guides the airflow; when the airflow passes through the second speed-increasing air duct, the airflow is further pressurized in the second stage under the action of the second pressure plate of the second speed-increasing air duct. At the position of the second speed-increasing air duct, the second outer ring radially contracts from the air inlet end to the air outlet end to form an outer air guide surface to pressurize and increase the speed of the airflow, and the outer wall of the boost seat radially increases from the air inlet end to the air outlet end to form an inner air guide surface to pressurize and increase the speed of the airflow. The second outer ring and the boost seat are used to form a shrinkage structure from the air inlet end to the air outlet end, thereby increasing the air volume and air supply distance of the airflow.
[0019] 2. The first pressure plate in the first speed-increasing air duct is arranged to be distributed clockwise or counterclockwise, and the second pressure plate in the second speed-increasing air duct is arranged to be distributed counterclockwise or clockwise. With the combined effect of the two, it is possible to guide the airflow first and then gather the air, thereby adjusting the direction of the airflow; or to gather the airflow first and then guide the air, thereby adjusting the direction of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the utility model.
[0021] Figure 2 It is a structural schematic diagram of the utility model from another angle.
[0022] Figure 3 It is a schematic diagram of the explosion structure of the utility model.
[0023] Figure 4 2 is a schematic diagram of the first shell structure.
[0024] Figure 5 2 is a schematic diagram of the second shell structure.
[0025] Figure 6 2 is a schematic diagram of the first shell structure.
[0026] Figure 7 It is a cross-sectional structural schematic diagram of the utility model.
[0027] Figure 8 yes Figure 7 Schematic diagram of the local enlarged structure.
[0028] Fig. 9 It is a schematic diagram of the structure of the first shell and the second shell.
[0029] Fig.10 It is a schematic diagram of the structure of the fan blade.
[0030] Fig.11 It is a structural diagram of the fan blades and rotor.
[0031] Fig.12 It is a schematic diagram of the structure of the stator.
[0032] Fig.13 It is a schematic diagram of the structure of the shell.
[0033] Figure numerals: 1. motor mounting seat; 2. pressurized surface; 3. motor; 4. fan blades; 5. first shell; 6. first outer ring; 7. first pressurized plate; 8. first speed-increasing air duct; 9. second shell; 10. second outer ring; 11. pressurized seat; 12. second pressurized plate; 13. second speed-increasing air duct; 14. outer air guide surface; 15. inner air guide surface; 16. stator; 17. rotor; 18. boss; 19. hub; 20. blades; 21. storage part; 22. iron core; 23. coil; 24. rotating shaft; 25. magnetic ring; 26. driving circuit board; 27. shell; 28. storage part; 29. power supply interface; 30. air inlet grille; 31. battery. DETAILED DESCRIPTION
[0034] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0035] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meanings of "several" and "multiple" are two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.
[0036] like Figure 1-8As shown, an internal and external oblique accelerated airflow mixing generator is provided, comprising: a motor mounting seat 1, the outer wall of the motor mounting seat 1 radially increases from the air inlet end to the air outlet end to form a pressurized surface 2; a motor 3, the motor 3 is arranged on the motor mounting seat 1; a fan blade 4, the fan blade 4 is arranged on the output end of the motor 2; a first shell 5, the first shell 5 is located at the air inlet end; the first shell 5 includes a first outer ring 6 and one or more first pressurized sheets 7; the first pressurized sheets 7 are distributed on the inner wall of the first outer ring 6 and extend to connect the outer peripheral edge of the motor mounting seat 1; the inner wall of the first outer ring 6, the first pressurized sheet 7 and the motor mounting seat 1 form a first speed-increasing air duct 8, the first speed-increasing air duct 8 is increased by the first pressurized sheet 7, resulting in a smaller radial ventilation area to pressurize and increase the speed of the airflow; a second shell 9, the second shell 9 is located at the air outlet end and connected to the first shell 5; the second shell 9 includes a second outer ring 10, a pressurized seat 11 and one or more second pressurized sheets 12; the second pressurized sheets 12 are distributed on the second The inner wall of the outer ring 10 extends and is connected to the outer peripheral edge of the boost seat 11. The inner wall of the second outer ring 10 radially contracts from the air inlet end to the air outlet end to form an outer air guide surface 14 to pressurize and speed up the airflow; the outer wall of the boost seat 11 radially increases from the air inlet end to the air outlet end to form an inner air guide surface 15 to pressurize and speed up the airflow; the inner wall of the second outer ring 10, the second pressurizing sheet 12 and the boost seat 11 form a second speed-increasing air duct 13, and the second speed-increasing air duct 13 is increased by the second pressurizing sheet 12 to cause a radial ventilation surface The area becomes smaller, so that the airflow is pressurized and accelerated; wherein, the motor 3 drives the fan blades 4 to rotate, generating negative pressure at the air inlet end to guide the airflow to the first speed-increasing air duct 8; the airflow is pressurized and guided to the second speed-increasing air duct 13 through the first pressure plate 7 on the first outer ring 6 and the pressure surface 2 of the motor mounting seat 1; the airflow is pressurized and blown out through the second pressure plate 12 in the second speed-increasing air duct 13; so that the airflow increases the air volume and air supply distance after being accelerated through the first speed-increasing air duct 8 and the second speed-increasing air duct 13.
[0037] In view of the technical problems recorded in the background technology, in the above technical scheme, the motor mounting seat 1 is arranged on the first shell 5, and the motor mounting seat 1 and the first shell 5 can be integrally formed or independent components. The motor mounting seat 1 can be arranged at the air inlet end or the air outlet end of the first shell 5. As an implementable technical method, the motor mounting seat 1 and the first shell 5 are integrally formed and the motor mounting seat 1 is arranged at the air outlet end of the first shell 5. The first pressure plate 7 can be evenly distributed or unevenly distributed between the first outer ring 6 and the motor mounting seat 1. Preferably, the first pressure plate 7 is evenly distributed on the circumference. Due to the presence of the first pressure plate 7, the radial ventilation area of the airflow passing through the first outer ring 6 becomes smaller, and the first shell 5 is located at the air inlet end. The airflow can gather the airflow around, increase the air volume, pressurize the airflow, and increase the airflow speed. Figure 6 As shown, the outer wall of the motor mounting seat 1 is radially enlarged in the direction from the air inlet end to the air outlet end to form a pressurized surface 2, which can guide the airflow on the one hand, and can pressurize and speed up the airflow on the other hand due to its radial enlargement; the second shell 9 includes a second outer ring 10, a booster seat 11 and a second pressurized plate 12, wherein the second outer ring 10, the booster seat 11 and the second pressurized plate 12 can be integrally formed or in the form of independent components. Preferably, the second outer ring 10, the booster seat 11 and the second pressurized plate 12 are integrally formed, and the second shell 9 can be integrally formed with the first shell 5 or in the form of independent components. The second pressurized plate 12 can be evenly distributed or unevenly distributed between the second outer ring 10 and the booster seat 11. Preferably, the second pressurized plate 12 is evenly distributed around the circumference. Combined with Figure 7 and Figure 8 As shown, the inner wall of the second outer ring 10 radially contracts in the direction from the air inlet end to the air outlet end to form an outer air guide surface 14. At the same time, the outer wall of the boost seat 11 radially increases in the direction from the air inlet end to the air outlet end to form an inner air guide surface 15. The second speed-increasing air duct 13 forms a constricted shape in the direction from the air inlet end to the air outlet end, thereby pressurizing and accelerating the airflow. The presence of the second pressurizing sheet 12 in the second speed-increasing air duct 13 causes the radial ventilation area of the airflow to become smaller when passing through the second outer ring 10, thereby further pressurizing the airflow and increasing the airflow speed.
[0038] During use, the motor 3 drives the fan blades 4 to rotate, and a double-speed increasing air duct form is adopted. When the airflow passes through the first speed increasing air duct 8, the first pressure plate 7 arranged in the first speed increasing air duct 8 causes the radial ventilation area to become smaller to pressurize the airflow. The first speed increasing air duct 8 is located at the air inlet end, thereby being able to absorb the surrounding air to increase the air volume. At the same time, the motor mounting seat 1 is designed to increase radially from the air inlet end to the air outlet end to form a pressure surface 2, which further pressurizes and guides the airflow; when the airflow passes through the second speed increasing air duct 13, at the first speed increasing air duct 14, the airflow is compressed at the second speed increasing air duct 15. Under the action of the second pressure plate 12 of the second speed-increasing air duct 13, the airflow is further pressurized in the second stage. At the position of the second speed-increasing air duct 13, the second outer ring 10 radially contracts in the direction from the air inlet end to the air outlet end to form an outer air guide surface 14 to pressurize and accelerate the airflow. The outer wall of the boost seat 11 radially increases in the direction from the air inlet end to the air outlet end to form an inner air guide surface 15 to pressurize and accelerate the airflow. The second outer ring 10 and the boost seat 11 are used to form a shrinkage structure from the air inlet end to the air outlet end, thereby increasing the air volume and air delivery distance of the airflow.
[0039] refer to Figure 4 , Figure 5 and Fig. 9 As shown, the first pressure plate 7 is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure plate 7 of the first speed increasing air duct 8 guides the airflow in the forward direction or gathers the airflow in the reverse direction to the second speed increasing air duct 13, and the second pressure plate 12 is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure plate 12 gathers the airflow in the reverse direction or blows it out in the forward direction, thereby achieving the effect of pressurizing and gathering the airflow.
[0040] As a preferred technical solution, in an implementable manner, the first pressure sheet 7 is set in a clockwise direction and the second pressure sheet 12 is set in a counterclockwise direction. As the airflow moves centrifugally along the surrounding direction of the fan blade 4 under the drive of the fan blade 4, the setting direction of the first pressure sheet 7 of the first speed-increasing air duct 8 is opposite to the direction of the airflow movement. The first pressure sheet 7 gathers the wind moving in the surrounding direction to change the flow direction of the airflow; the airflow passing through the first speed-increasing air duct 8 is guided to the second speed-increasing air duct 13, and the second pressure sheet 12 of the second speed-increasing air duct 13 is set in a counterclockwise direction. As the counterclockwise setting of the second pressure sheet 12 is the same as the movement direction of the airflow, the second pressure sheet 12 guides the airflow after gathering the wind, and then the wind passing through the second speed-increasing air duct 13 is blown out in the front. Avoid the airflow from being dispersed and blown out, resulting in air volume loss, and achieve the effect of gathering and pressurizing.
[0041] In another feasible manner, the first pressure plate 7 is arranged counterclockwise and the second pressure plate 12 is arranged clockwise. As the airflow is driven by the fan blades 4, the airflow moves centrifugally in the directions around the fan blades 4. The setting direction of the first pressure plate 7 of the first speed increasing air duct 8 is the same as the direction of the airflow movement. The first pressure plate 7 guides and pressurizes the wind moving around. Since the clockwise setting of the second pressure plate 12 is opposite to the direction of the airflow movement, the second pressure plate 12 can gather the airflow and change its flow direction, so that the airflow can be blown out from the front when it is blown out, thereby avoiding the airflow being dispersed and causing air volume loss.
[0042] Reference Figure 3 , Fig.10 , Fig.11 and Fig.12 As shown, the motor 3 includes a stator 16 and a rotor 17. The stator 16 is fixed on the motor mounting base 1, and the rotor 17 is arranged on the fan blade 4. The rotor 17 is sleeved on the stator 16. In implementation, the motor 3 can be a brushed motor or a brushless motor.
[0043] The motor mounting base 1 is provided with a convex column 18 which extends axially and is hollow inside; the fan blade 4 includes a hub portion 19 and blades 20 evenly arranged on the outer peripheral surface of the hub portion 19, and the hub portion 19 has a receiving portion 21 which is recessed inwardly; the stator 16 includes an iron core 22 inserted on the convex column 18 and a coil 23 wound on the iron core 22; the rotor 17 includes a rotating shaft 24 axially arranged on the receiving portion 21 and a magnetic ring 25 attached to the radial inner wall of the receiving portion 21, and the rotating shaft 24 is inserted in the convex column 18.
[0044] Preferably, as an implementable technical solution, the motor 3 adopts an outer rotor brushless motor. Structurally, the hub portion 19 of the fan blade 4 is provided with a storage portion 21, and the fan blade 4 is used as the installation position of the rotor 17. The magnetic ring 25 and the rotating shaft 24 of the rotor 17 are arranged at the position of the storage portion 21, thereby optimizing the structure and saving the number of components. At the same time, a hollow boss 18 is arranged on the motor mounting seat 1 to facilitate the insertion of the rotating shaft 24 into the boss 18 for positioning. At the same time, the iron core 22 and the coil 23 of the stator 16 can be sleeved on the boss 18 for positioning. The fan blade 4 is driven by the designed outer rotor brushless motor structure, which can be more compact in structure, save the number of components, and thus reduce costs.
[0045] refer to Figure 3As shown, the utility model also includes a driving circuit board 26, and the driving circuit board 26 is electrically connected to the motor 3 to drive the motor 3 to drive the fan blades 4 to rotate, and the airflow is accelerated through the first speed-increasing air duct 8 and the second speed-increasing air duct 13 in sequence and then blown out.
[0046] In implementation, the driving circuit board 26 can be built-in or external. When built-in, it can be installed on the first shell 5 and the second shell 9. When external, it can be installed by setting up an additional shell. There is no limitation on this. The driving circuit board 26 is mainly used to drive and control various components.
[0047] refer to Figure 3 As shown, the utility model includes a shell 27, and the shell 27 is provided with a hollow accommodating portion 28 along the air inlet end to the air outlet end, and at least a portion of the accommodating portion 28 extends to the first shell 5 or the second shell 9; to form a package for the first shell 5 or the first shell 5 and the second shell 9, or to form a package in the first shell 5 or the first shell 5 and the second shell 9.
[0048] In a further technical solution, an outer shell 27 is added. The outer shell 27 is a hollow structure forming a receiving portion 28. The outer shell 27 can be set on one side of the first shell 5. In one implementation, the outer shell 27 can accommodate the first shell 5 and the second shell 9 through the receiving portion 28; in a second implementation, the outer shell 27 can accommodate the first shell 5; in a third implementation, the receiving portion 28 of the outer shell 27 can be accommodated in the first shell 5 and the second shell 9; in a fourth implementation, the outer shell 27 can be accommodated in the first shell 5.
[0049] Preferably, the blades 20 of the fan blades 4 are distributed counterclockwise from the air inlet end to the air outlet end. When the motor 3 rotates, the fan blades 4 are driven to rotate counterclockwise, so that the airflow direction entering the first speed-increasing air duct 8 is counterclockwise.
[0050] like Figure 3 As shown, it includes a power supply interface 29 for providing power, and the power supply interface 29 is electrically connected to the driving circuit board 26. The power supply interface 29 can be used as a connecting wire, such as using a plug and a socket to connect for power supply.
[0051] Preferably, the housing 27 is provided with an air inlet grille 30 at the air inlet end, and the air inlet grille 30 includes connecting strips evenly distributed around the circumference, and the connecting strips radially extend and connect to the inner wall of the housing 27 to form a gap to prevent foreign matter from entering.
[0052] Specifically, it includes a battery 31, and the battery 31 is electrically connected to the power supply interface 29 so as to charge and store electricity in the battery 31. Among them, the utility model further includes a battery 31, and the battery 31 can be powered by the power supply interface 29 to achieve battery life.
[0053] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. An internal and external oblique accelerated airflow mixed flow generator, characterized in that: include: A motor mounting seat, wherein the outer wall of the motor mounting seat radially increases from the air inlet end to the air outlet end to form a pressurized surface; A motor, wherein the motor is arranged on the motor mounting seat; A fan blade, wherein the fan blade is arranged on an output end of the motor; A first shell, the first shell is located at the air inlet end; the first shell includes a first outer ring and one or more first pressure sheets; the first pressure sheets are distributed on the inner wall of the first outer ring and extend to connect the outer peripheral edge of the motor mounting seat; the inner wall of the first outer ring, the first pressure sheet and the motor mounting seat form a first speed-increasing air duct, and the first speed-increasing air duct is increased by the first pressure sheet, resulting in a smaller radial ventilation area, thereby pressurizing and speeding up the airflow; A second shell, wherein the second shell is located at the air outlet end and is connected to the first shell; the second shell includes a second outer ring, a booster seat and one or more second pressure sheets; the second pressure sheets are distributed on the inner wall of the second outer ring and extend to be connected to the outer peripheral edge of the booster seat, and the inner wall of the second outer ring radially contracts from the air inlet end to the air outlet end to form an outer wind guide surface to pressurize and increase the speed of the airflow; the outer wall of the booster seat radially increases from the air inlet end to the air outlet end to form an inner wind guide surface to pressurize and increase the speed of the airflow; the inner wall of the second outer ring, the second pressure sheet and the booster seat form a second speed-increasing air duct, and the second speed-increasing air duct is increased by the second pressure sheet, resulting in a smaller radial ventilation area to pressurize and increase the speed of the airflow; Among them, the motor drives the fan blades to rotate, generating negative pressure at the air inlet end to guide the airflow to the first speed-increasing air duct; the airflow is pressurized through the first pressure plate on the first outer ring and the pressure surface of the motor mounting seat and guided to the second speed-increasing air duct; the airflow is pressurized and blown out through the second pressure plate in the second speed-increasing air duct; so that the air volume and air supply distance are increased after the airflow is accelerated through the first speed-increasing air duct and the second speed-increasing air duct.
2. The internal and external oblique accelerated airflow mixed flow generator according to claim 1, characterized in that: The first pressure sheet is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure sheet of the first speed-increasing air duct guides the airflow forward or gathers the airflow in the reverse direction to the second speed-increasing air duct, and the second pressure sheet is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure sheet gathers the airflow in the reverse direction or blows it out in the forward direction, thereby achieving the effect of pressurizing and gathering the airflow.
3. The internal and external oblique accelerated airflow mixed flow generator according to claim 1, characterized in that: The motor comprises a stator and a rotor, wherein the stator is fixed on the motor mounting seat, the rotor is arranged on the fan blades, and the rotor is sleeved on the stator.
4. The internal and external oblique accelerated airflow mixed flow generator according to claim 3, characterized in that: The motor mounting seat is provided with a convex column extending in the axial direction and having a hollow interior; The fan blade comprises a hub portion and blades evenly arranged on the outer peripheral surface of the hub portion, and the hub portion has a receiving portion that is recessed inwardly; The stator comprises an iron core inserted on the protruding column and a coil wound on the iron core; The rotor comprises a rotating shaft axially arranged on the receiving portion and a magnetic ring attached to the radial inner wall of the receiving portion, and the rotating shaft is inserted into the convex column.
5. The internal and external oblique accelerated airflow mixed flow generator according to claim 2 or 4, characterized in that: It includes a driving circuit board, which is electrically connected to the motor to drive the motor to drive the fan blades to rotate, and the airflow is accelerated through the first speed-increasing air duct and the second speed-increasing air duct in sequence and then blown out.
6. The internal and external oblique accelerated airflow mixed flow generator according to claim 5, characterized in that: The housing comprises a housing, wherein the housing is provided with a hollow receiving portion from the air inlet end to the air outlet end, and at least a portion of the receiving portion extends to the first housing or the second housing; To form a package that wraps the first shell or the first shell and the second shell, or to form a package that is contained in the first shell or the first shell and the second shell.
7. The internal and external oblique accelerated airflow mixed flow generator according to claim 5, characterized in that: The blades of the fan blade are distributed counterclockwise from the air inlet end to the air outlet end.
8. The internal and external oblique accelerated airflow mixed flow generator according to claim 5, characterized in that: A power supply interface is included for providing electric power, and the power supply interface is electrically connected to the driving circuit board.
9. The internal and external oblique accelerated airflow mixed flow generator according to claim 6, characterized in that: The housing is provided with an air inlet grille at the air inlet end. The air inlet grille includes connecting strips evenly distributed around the circumference. The connecting strips extend radially to connect to the inner wall of the housing to form a gap to prevent foreign matter from entering.
10. The internal and external oblique accelerated airflow mixed flow generator according to claim 8, characterized in that: A battery is included, and the battery is electrically connected to the power supply interface so as to charge the battery and store electricity.