Inside and outside inclined accelerated airflow mixed flow generator

Abstract

The utility model relates to the technical field of fans, and discloses an internally and externally inclined accelerated airflow mixed flow generator, which comprises a motor mounting seat, a motor; a fan blade; the first shell comprises a first outer ring and a first pressurizing sheet, and the inner wall of the first outer ring, the first pressurizing sheet and the motor mounting seat form a first acceleration air duct; the second shell comprises a second outer ring, a pressurizing seat and a second pressurizing piece, the inner wall of the second outer ring radially shrinks in the direction from the air inlet end to the air outlet end to form an outer air guide face to pressurize and accelerate airflow, and the outer wall of the pressurizing seat radially increases in the direction from the air inlet end to the air outlet end to form an inner air guide face to pressurize and accelerate airflow; the inner wall of the second outer ring, the second pressurizing sheet and the pressurizing seat form a second accelerating air duct; the motor drives the fan blades to rotate to generate negative pressure at the air inlet end to guide airflow to the first speed-increasing air duct and the second speed-increasing air duct. After airflow is accelerated through the first acceleration air duct and the second acceleration air duct, the air volume and the air supply distance are increased.

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 farther distance and cannot cool the user. There is also a lack of effective solutions to this problem on the market.

[0005] Therefore, improvements need to be made to this. Utility Model Content

[0006] The technical problem solved by the present invention is to provide an internal and external oblique accelerated airflow mixed flow generator to solve the problems raised in the above background technology in view of the defects existing in the above prior art.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: an internal and external oblique accelerated airflow mixing generator, comprising: a motor mounting seat; a motor, the motor being arranged on the motor mounting seat; fan blades, the fan blades being arranged on the output end of the motor; a first shell, the first shell being located at the air inlet end; the first shell comprising 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, the first speed-increasing air duct is increased by the first pressure sheet, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow; a second shell, the second shell is located at the air outlet end and connected to the first shell; the second shell comprises a second outer ring, a boost 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 connect to the peripheral edge of the boost 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 air guide facing The air flow is pressurized and accelerated; 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, which pressurizes and accelerates the air flow; the inner wall of the second outer ring, the second pressure plate and the boost seat form a second speed-increasing air duct, and the second speed-increasing air duct is increased by the second pressure plate, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the air flow; wherein, the sum of the areas of the first outer ring, the first pressure plate and the motor mounting seat is the first air guide area; the sum of the areas of the second outer ring, the second pressure plate and the boost seat is the second air guide area, and the first air guide area is larger than the second air guide area, so as to form a progressive increase in the pressure and speed of the air flow; the motor drives the fan blades to rotate, generating a negative pressure at the air inlet end to guide the air flow to the first speed-increasing air duct; the air flow is pressurized by the first pressure plate on the first outer ring and guided to the second speed-increasing air duct; the air flow is pressurized and blown out by the second pressure plate in the second speed-increasing air duct, so that the air volume and air supply distance are increased after the air flow is accelerated by the first speed-increasing air duct and the second speed-increasing air duct.

[0008] Furthermore, the first pressure plate is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure plate 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 plate is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure plate 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] Further, the motor mounting seat is provided with a convex column extending along the axial direction and internally hollow; the fan blade includes a hub part and blades uniformly arranged on the outer circumferential surface of the hub part, the hub part is provided with a receiving part 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 in the receiving part and a magnetic ring attached to the radial inner wall of the receiving part, and the rotating shaft is inserted in the convex column.

[0011] Further, a driving circuit board is arranged, which is electrically connected with the motor to drive the motor to rotate the fan blade, and the airflow is sequentially speeded up through the first speed-up air duct and the second speed-up air duct and then blown out.

[0012] Further, a shell is arranged, which is provided with a hollow accommodating part from the air inlet end to the air outlet end, and at least a part of the accommodating part extends to the first shell or the second shell, so as to form a package of the first shell or the first shell and the second shell, or to form an accommodation in the first shell or the first shell and the second shell.

[0013] Further, the blades of the fan blade are distributed counterclockwise from the air inlet end to the air outlet end.

[0014] Further, a power supply interface for providing power is arranged, which is electrically connected with the driving circuit board.

[0015] Further, the shell is provided with an air inlet grille at the air inlet end, and the air inlet grille includes connection strips uniformly distributed in the circumference, which are connected to the inner wall of the shell in the radial direction to form a gap for preventing foreign matters from entering.

[0016] Further, a battery is arranged, which is electrically connected with the power supply interface to store the charging capacity of the battery.

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

[0018] 1. A dual-speed increasing air duct form is adopted. When the airflow passes through the first speed increasing air duct, the first pressure plate provided in the first speed increasing air duct causes the radial ventilation area to become smaller to pressurize the airflow. At the same time, the first speed increasing air duct is located at the air inlet end, thereby being able to absorb the surrounding air and increase the air volume. 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 accelerate the airflow. The outer periphery 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 accelerate the airflow. The second outer ring and the boost seat are used to form a tapered structure from the air inlet end to the air outlet end, thereby increasing the air volume and air delivery distance of the airflow. Combined with the difference design of the first air guide area of ​​the first speed increasing air duct and the second air guide area of ​​the second speed increasing air duct, the first air guide area is designed to be larger than the second air guide area. Then, when the airflow enters the smaller second air guide area from the larger first air guide area, the airflow can be pressurized and accelerated.

[0019] 2. The first pressure plate in the first speed-increasing air duct is set to be distributed clockwise or counterclockwise, and the second pressure plate in the second speed-increasing air duct is set 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, and adjust the direction of the airflow; or to gather the airflow first and then guide the air, and adjust the direction of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the utility model.

[0021] Figure 2 This 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 2 is a schematic diagram of the second shell structure.

[0027] Figure 8 It is a schematic cross-sectional structural diagram of the present utility model.

[0028] Figure 9 yes Figure 8 Schematic diagram of the local enlarged structure.

[0029] Figure 10 is a structural schematic view of the first shell and the second shell.

[0030] Figure 11 is a structural schematic view of the fan blade.

[0031] Figure 12 is a structural schematic view of the fan blade and the rotor.

[0032] Figure 13 is a structural schematic view of the stator.

[0033] Figure 14 is a structural schematic view of the outer shell.

[0034] Reference signs: 1, motor mounting seat; 2, motor; 3, fan blade; 4, first shell; 5, first outer ring; 6, first pressurizing sheet; 7, first speed-increasing air duct; 8, second shell; 9, second outer ring; 10, pressurizing seat; 11, second pressurizing sheet; 12, second speed-increasing air duct; 13, outer air guide surface; 14, inner air guide surface; 15, first air guide area; 16, second air guide area; 17, stator; 18, rotor; 19, convex column; 20, hub part; 21, blade; 22, storage part; 23, iron core; 24, coil; 25, rotating shaft; 26, magnetic ring; 27, driving circuit board; 28, outer shell; 29, containing part; 30, power supply interface; 31, air inlet grille; 32, battery. DETAILED DESCRIPTION

[0035] The utility model will be further explained in detail in connection with the drawings.

[0036] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed 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", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" or "multiple" means two or more, unless otherwise specifically defined. In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. A person skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a lower level than the second feature.

[0037] like Figure 1-9As shown, an internal and external oblique accelerated airflow mixing generator is provided, comprising: a motor mounting base 1; a motor 2, the motor 2 being arranged on the motor mounting base 1; a fan blade 3, the fan blade 3 being arranged on the output end of the motor 2; a first shell 4, the first shell 4 being located at the air inlet end; the first shell 4 comprising a first outer ring 5 and one or more first pressure sheets 6; the first pressure sheets 6 are distributed on the inner wall of the first outer ring 5 and extend to connect the outer peripheral edge of the motor mounting base 1; the inner wall of the first outer ring 5, the first pressure sheet 6 and the motor mounting base 1 form a first speed increasing member. The air duct 7, the first speed-increasing air duct 7 is increased by the first pressure plate 6, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow; the second shell 8, the second shell 8 is located at the air outlet end and connected to the first shell 4; the second shell 8 includes a second outer ring 9, a pressure seat 10 and one or more second pressure plates 11; the second pressure plates 11 are distributed on the inner wall of the second outer ring 9 and extend to the outer peripheral edge of the pressure seat 10, and the inner wall of the second outer ring 9 radially contracts from the air inlet end to the air outlet end to form an outer wind guide surface 13 to pressurize and accelerate the airflow; the pressure seat 1 0 The outer wall increases radially from the air inlet end to the air outlet end to form an inner air guide surface 14 to pressurize and accelerate the air flow; the inner wall of the second outer ring 9, the second pressure plate 11 and the supercharger seat 10 form a second speed-increasing air duct 12, and the second speed-increasing air duct 12 is increased by the second pressure plate 11, resulting in a smaller radial ventilation area to pressurize and accelerate the air flow; wherein, the sum of the areas formed by the first outer ring 5, the first pressure plate 6 and the motor mounting seat 1 is the first air guide area 15; the area formed by the second outer ring 9, the second pressure plate 11 and the supercharger seat 10 is The sum of the areas is the second air guide area 16, and the first air guide area 15 is larger than the second air guide area 16, so as to form a progressive pressure increase and speed increase for the air flow; the motor 2 drives the fan blades 3 to rotate to generate negative pressure at the air inlet end to guide the air flow to the first speed increasing duct 7; the air flow is pressurized by the first pressure plate 6 in the first outer ring 5 and guided to the second speed increasing duct 12; the air flow is pressurized and blown out through the second pressure plate 11 in the second speed increasing duct 12; so that the air volume and air supply distance are increased after the air flow is accelerated through the first speed increasing duct 7 and the second speed increasing duct 12.

[0038] In view of the technical problems recorded in the background technology, in the above technical solution, the motor mounting seat 1 is arranged on the first shell 4, the motor mounting seat 1 and the first shell 4 can be integrally formed or be independent components, the motor mounting seat 1 can be arranged at the air inlet end position or the air outlet end position of the first shell 4, as an implementable technical method, the motor mounting seat 1 and the first shell 4 are integrally formed and the motor mounting seat 1 is arranged at the air outlet end of the first shell 4, the first pressure plate 6 can be evenly distributed or unevenly distributed between the first outer ring 5 and the motor mounting seat 1, preferably, the first pressure plate 6 is evenly distributed on the circumference, and due to the presence of the first pressure plate 6, the airflow is radially ventilated through the first outer ring 5 The area becomes smaller, and the first shell 4 is located at the air inlet end, the airflow can absorb the airflow around it, increase the air volume, and at the same time, pressurize the airflow to increase the airflow speed; the second shell 8 includes a second outer ring 9, a booster seat 10 and a second pressure plate 11, wherein the second outer ring 9, the booster seat 10 and the second pressure plate 11 can be integrally formed or in the form of independent components. Preferably, the second outer ring 9, the booster seat 10 and the second pressure plate 11 are integrally formed, the second shell 8 can be in the form of an integral part or an independent component with the first shell 4, the second pressure plate 11 can be evenly distributed or unevenly distributed between the second outer ring 9 and the booster seat 10. Preferably, the second pressure plate 11 is uniformly distributed around the circumference.

[0039] Combine Figure 8 and Figure 9 The inner wall of the second outer ring 9 radially contracts from the air inlet end to the air outlet end to form an outer air guide surface 13. At the same time, the outer periphery of the supercharger seat 10 radially increases from the air inlet end to the air outlet end to form an inner air guide surface 14. The second speed-increasing air duct 12 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 11 in the second speed-increasing air duct 12 causes the radial ventilation area of ​​the airflow through the second outer ring 9 to become smaller, thereby further pressurizing the airflow and increasing the airflow speed.

[0040] The first speed-increasing air duct 7 is formed by the inner wall of the first outer ring 5, the first pressure plate 6, and the outer wall of the motor mounting base 1, wherein the number of first pressure plates 6 can be set to a reasonable number according to demand; the sum of the areas formed by the inner wall of the first outer ring 5, the outer wall of the motor mounting base 1, and the first pressure plate 6 is defined as a first air guide area 15. The second speed-increasing air duct 12 is formed by the inner wall of the second outer ring 9, the second pressure plate 11, and the outer wall of the boosting base 10, wherein the number of second pressure plates 11 can be set to a reasonable number according to demand; the sum of the areas formed by the inner wall of the second outer ring 9, the outer wall of the boosting base 10, and the second pressure plate 11 is defined as a second air guide area 16. In the design, the first speed-increasing air duct 7 is close to the air inlet end of the air flow, and the second speed-increasing air duct 12 is close to the air outlet end of the air flow. The first air guide area 15 is designed to be larger than the second air guide area 16. Therefore, when the air flow is pressurized and accelerated through the first speed-increasing air duct 7, since the second air guide area 16 is smaller than the first air guide area 15, the air flow is further pressurized and accelerated, achieving a staged pressurization and acceleration effect.

[0041] During use, the motor 2 drives the fan blades 3 to rotate, and adopts a dual-speed air duct form. When the airflow passes through the first speed-increasing air duct 7, the first pressure plate 6 set in the first speed-increasing air duct 7 causes the radial ventilation area to become smaller to achieve pressurization of the airflow. At the same time, the first speed-increasing air duct 7 is located at the air inlet end, thereby being able to absorb the surrounding air and increase the air volume; when the airflow passes through the second speed-increasing air duct 12, the airflow is further pressurized in the second section under the action of the second pressure plate 11 of the second speed-increasing air duct 12, and the inner wall of the second outer ring 9 of the second speed-increasing air duct 12 radially contracts from the air inlet end to the air outlet end to form an outer wind guide surface 13, which increases the airflow. The outer wall of the pressure seat 10 radially increases from the air inlet end to the air outlet end to form an inner air guide surface 14. Due to the interaction between the outer air guide surface 13 and the inner air guide surface 14, the radial ventilation area at the air inlet end of the second speed-increasing air duct 12 is larger than the radial ventilation area at the air outlet end, thereby increasing the air volume and air supply distance of the air flow; combined with the different design of the first air guide area 15 of the first speed-increasing air duct 7 and the second air guide area 16 of the second speed-increasing air duct 12, the first air guide area 15 is designed to be larger than the second air guide area 16, and then, when the air flow enters the smaller second air guide area 16 from the larger first air guide area 15, it can form a pressure-increasing and accelerated air flow.

[0042] refer to Figure 4-7 and Figure 10 As shown, the first pressure plate 6 is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure plate 6 of the first speed increasing air duct 7 guides the airflow forward or gathers the airflow in the reverse direction to the second speed increasing air duct 12, and the second pressure plate 11 is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure plate 11 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.

[0043] As a preferred technical solution, in an implementable manner, the first pressure plate 6 is arranged in a clockwise direction and the second pressure plate 11 is arranged in a counterclockwise direction. As the airflow is driven by the fan blades 3, the airflow moves centrifugally along the four directions of the fan blades 3. The setting direction of the first pressure plate 6 of the first speed-increasing air duct 7 is opposite to the direction of the airflow movement. The first pressure plate 6 gathers the wind moving in the four directions and changes the flow direction of the airflow. The airflow passing through the first speed-increasing air duct 7 is guided to the second speed-increasing air duct 12. The second pressure plate 11 of the second speed-increasing air duct 12 is arranged in a counterclockwise direction. Since the counterclockwise setting of the second pressure plate 11 is the same as the direction of the airflow movement, the second pressure plate 11 guides the gathered airflow, and then the wind passing through the second speed-increasing air duct 12 is blown out in the front. This avoids the airflow from being dispersed and blown out, causing air volume loss, and achieves the effect of gathering and pressurizing the air.

[0044] In another feasible manner, the first pressure plate 6 is arranged counterclockwise and the second pressure plate 11 is arranged clockwise. As the airflow is driven by the fan blades 3, the airflow moves centrifugally along the four directions of the fan blades 3. The setting direction of the first pressure plate 6 of the first speed increasing duct 7 is the same as the direction of the airflow movement. The first pressure plate 6 guides and pressurizes the wind moving in all directions. Since the clockwise setting of the second pressure plate 11 is opposite to the direction of the airflow movement, the second pressure plate 11 can gather the airflow and change the flow direction of the airflow, so that the airflow can be blown out from the front when it is blown out, avoiding the airflow from being dispersed and causing air volume loss.

[0045] Reference Figure 3 、 Figure 11 、 Figure 12 and Figure 13 As shown, the motor 2 includes a stator 17 and a rotor 18. The stator 17 is fixed to the motor mounting base 1, and the rotor 18 is arranged on the fan blades 3. The rotor 18 is sleeved on the stator 17. In practice, the motor 2 can be a brushed motor or a brushless motor.

[0046] The motor mounting base 1 is provided with a boss 19 extending axially and having a hollow interior; the fan blade 3 includes a hub portion 20 and blades 21 evenly arranged on the outer peripheral surface of the hub portion 20, and the hub portion 20 has a receiving portion 22 recessed inwardly; the stator 17 includes an iron core 23 inserted on the boss 19 and a coil 24 wound on the iron core 23; the rotor 18 includes a rotating shaft 25 axially arranged on the receiving portion 22 and a magnetic ring 26 attached to the radial inner wall of the receiving portion 22, and the rotating shaft 25 is inserted in the boss 19.

[0047] Preferably, as an implementable technical solution, the motor 2 adopts an outer rotor brushless motor. Structurally, the hub 20 of the fan blade 3 is provided with a storage portion 22, and the fan blade 3 is used as the installation position of the rotor 18. The magnetic ring 26 and the rotating shaft 25 of the rotor 18 are arranged at the storage portion 22 position, thereby optimizing the structure and saving the number of components. At the same time, a hollow boss 19 is provided on the motor mounting seat 1 to facilitate the insertion of the rotating shaft 25 into the boss 19 for positioning. At the same time, the iron core 23 and the coil 24 of the stator 17 can be sleeved on the boss 19 for positioning. The fan blade 3 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.

[0048] refer to Figure 3 As shown, the utility model also includes a driving circuit board 27, which is electrically connected to the motor 2 to drive the motor 2 to drive the fan blades 3 to rotate, and the air flow is accelerated through the first speed-increasing air duct 7 and the second speed-increasing air duct 12 in sequence and then blown out.

[0049] In implementation, the driving circuit board 27 can be built-in or external. When built-in, it can be installed on the first shell 4 and the second shell 8. When external, it can be installed by setting up an additional shell. There is no limitation on this. The driving circuit board 27 is mainly used to drive and control various components.

[0050] refer to Figure 3 As shown, the utility model includes a shell 28, and the shell 28 is provided with a hollow accommodating portion 29 along the air inlet end to the air outlet end, and at least a portion of the accommodating portion 29 extends to the first shell 4 or the second shell 8; to form a package that wraps the first shell 4 or the first shell 4 and the second shell 8, or to form a package that is accommodated in the first shell 4 or the first shell 4 and the second shell 8.

[0051] In a further technical solution, a shell 28 is added. The shell 28 is a hollow structure forming a accommodating portion 29. The shell 28 can be set on one side of the first shell 4. In one implementation, the shell 28 can accommodate the first shell 4 and the second shell 8 through the accommodating portion 29; in a second implementation, the shell 28 can accommodate the first shell 4; in a third implementation, the accommodating portion 29 of the shell 28 can be accommodated in the first shell 4 and the second shell 8; in a fourth implementation, the shell 28 can be accommodated in the first shell 4.

[0052] Preferably, the blades 21 of the fan blade 3 are distributed counterclockwise from the air inlet end to the air outlet end. When the motor 2 rotates, the fan blade 3 is driven to rotate counterclockwise, so that the airflow direction entering the first speed-increasing air duct 7 is counterclockwise.

[0053] like Figure 3 As shown, it includes a power supply interface 30 for providing power, and the power supply interface 30 is electrically connected to the driving circuit board 27. The power supply interface 30 can be used as a connecting wire, such as using a plug and a socket to connect for power supply.

[0054] Preferably, the housing 28 is provided with an air inlet grille 31 at the air inlet end. The air inlet grille 31 includes connecting strips evenly distributed around the circumference. The connecting strips radially extend and connect to the inner wall of the housing 28 to form a gap to prevent foreign matter from entering.

[0055] Specifically, it includes a battery 32, and the battery 32 is electrically connected to the power supply interface 30 to charge and store electricity in the battery 32. Among them, the utility model further includes a battery 32, which can be powered by the power supply interface 30 to achieve battery life.

[0056] 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: Motor mount; a motor, the motor being arranged on the motor mounting seat; fan blades, the fan blades being arranged on the output end of the motor; A first shell, the first shell being located at the air inlet end; the first shell comprising a first outer ring and one or more first pressure sheets; the first pressure sheets being distributed on the inner wall of the first outer ring and extending to connect to 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 forming a first speed-increasing air duct, wherein the first speed-increasing air duct is increased by the first pressure sheet, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow; A second shell, 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 plates; the second pressure plates 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, 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 plate and the booster seat form a second speed-increasing air duct, and the second speed-increasing air duct is increased by the second pressure plate, resulting in a smaller radial ventilation area to pressurize and increase the speed of the airflow; The sum of the areas formed by the first outer ring, the first pressure plate, and the motor mounting seat is the first air guide area; the sum of the areas formed by the second outer ring, the second pressure plate, and the boost seat is the second air guide area, and the first air guide area is larger than the second air guide area, so as to form a progressive increase in pressure and speed of the airflow; 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 by the first pressure plate on the first outer ring and directed 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 plate is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure plate 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 plate is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure plate 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 includes a stator and a rotor, wherein the stator is fixed on the motor mounting seat, and 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 includes a hub portion and blades evenly arranged on the outer circumference of the hub portion, and the hub portion has a receiving portion that is recessed inwardly; The stator includes an iron core inserted on the protruding 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 into the protruding 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 air flow 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 hollow receiving portion provided along the air inlet end to the air outlet end, wherein 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 accommodated 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 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 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 and are connected 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.

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