Acceleration airflow mixing generator

Abstract

The utility model relates to the technical field of fans, and discloses a speed-increasing airflow mixing generator, which comprises a front shell, a rear shell and a motor mounting seat, wherein the front shell comprises a first outer ring, a pressurizing sheet and a motor mounting seat; the pressurizing sheets are distributed on the peripheral edge of the motor mounting seat and extend to the inner wall of the first outer ring; the inner wall of the first outer ring and the outer wall of the motor mounting seat form a pressurizing air outlet duct; the motor is arranged on the motor mounting seat; the fan blades are arranged at the output end of the motor; the rear shell is arranged in the air inlet direction and matched with the front shell. The inner wall of the rear shell is provided with a pressurizing face increasing in the radial direction from the air inlet direction to the air outlet direction, and the inner wall of the rear shell and the fan blades form an air inlet channel. When the motor drives the fan blades to rotate, negative pressure is generated, air flow sequentially passes through the air inlet channel which is enlarged in the radial direction and the pressurizing air outlet channel which is shrunk in the radial direction from the air inlet direction to the air outlet direction to be blown out, and therefore the air quantity and the air supply distance of the air flow are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a speed-increasing airflow mixing generator. Background Art

[0002] The main structure of the fans currently available on the market is a rear air inlet cover, a front air outlet cover, a motor and fan blades, which use the motor to drive the fan blades to rotate to achieve a straight-in and straight-out air supply mode.

[0003] Due to the use of this structure, there are the disadvantages of low air pressure and short air supply distance. When the user is at a slightly greater distance, the air cannot be felt and cooling of the user cannot be achieved.

[0004] Therefore, improvements need to be made to this. Utility Model Content

[0005] The technical problem solved by the present invention is to provide a speed-increasing airflow mixing generator in response to the defects in the above-mentioned prior art, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: an airflow mixing generator with an increased speed, comprising: a front shell, the front shell being arranged in the air outlet direction; the front shell comprising a first outer ring, one or more pressure plates and a motor mounting seat; the pressure plates being distributed on the outer peripheral edge of the motor mounting seat and extending to the inner wall of the first outer ring; the inner wall of the first outer ring and the outer wall of the motor mounting seat forming a pressurized air outlet duct, the pressurized air outlet duct radially contracting from the air inlet direction to the air outlet direction; a motor, the motor being arranged on the motor mounting seat A seat; a fan blade, the fan blade is arranged at the output end of the motor; a rear shell, the rear shell is arranged in the air inlet direction, and the rear shell cooperates with the front shell; the inner wall of the rear shell is provided with a radially increasing pressurized surface from the air inlet direction to the air outlet direction, and an air inlet duct is formed between the inner wall of the rear shell and the fan blade; wherein, when the motor drives the fan blade to rotate, negative pressure is generated, and the air flow is blown out from the air inlet direction to the air outlet direction through the radially increasing air inlet duct and the radially contracting pressurized air outlet duct in turn, so as to increase the air volume and air supply distance of the air flow.

[0007] Furthermore, the outer peripheral surface of the motor mounting seat radially increases from the air inlet direction to the air outlet direction to form a boost surface, and forms the boost outlet air duct radially contracted from the air inlet direction to the air outlet direction with the inner wall of the first outer ring.

[0008] Furthermore, the fan blade includes a hub portion and blades evenly arranged on the outer peripheral surface of the hub portion, the blade includes a blade top and a blade root, the blade top is located in the wind inlet direction, the blade root is located in the wind outlet direction, and the length of the blade top is greater than the length of the blade root, so that when the blade rotates, the air volume around the rear shell is drawn.

[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 extending axially and hollow inside; the fan blades include a hub portion and blades evenly arranged on the outer peripheral surface of the hub portion, and the hub portion has a receiving portion 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 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.

[0012] Furthermore, it includes a power supply interface for providing power, and the power supply interface is electrically connected to the driving circuit board.

[0013] Furthermore, the rear shell 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 rear shell to form a gap to prevent foreign matter from entering.

[0014] Furthermore, it includes a battery, which is electrically connected to the power supply interface to charge the battery and store electricity.

[0015] Furthermore, it includes a cover, which is arranged on a side of the motor mounting base close to the air outlet direction.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In terms of structural design, a boosted air outlet duct that radially contracts from the air inlet direction to the air outlet direction is designed at the front shell position, and a radially increasing pressurized surface is provided on the inner wall of the rear shell position from the air inlet direction to the air outlet direction. When the motor drives the rotation, more air volume can be pumped in the surrounding directions of the rear shell. At the same time, the air inlet duct formed between the pressurized surface and the fan blades can pressurize and accelerate the airflow. Furthermore, when the airflow is directed to the boosted air outlet duct, the radially contracted boosted air outlet duct can further pressurize and accelerate the airflow, thereby increasing the air volume and air supply distance.

[0018] 2. The length of the top of the fan blade is designed to be greater than the length of the root of the blade. When the motor drives the fan blade to rotate, more air can be pumped in. At the same time, the air inlet duct between the outer contour of the rotating fan blade and the inner wall of the rear shell becomes narrower, thereby pressurizing and increasing the speed of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0021] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0022] Figure 4 It is a structural diagram of the front shell.

[0023] Figure 5 It is a structural diagram of the front shell.

[0024] Figure 6 It is a structural diagram of the front shell.

[0025] Figure 7 It is a structural diagram of the back shell.

[0026] Figure 8 It is a structural diagram of the back shell.

[0027] Figure 9 It is a structural diagram of the fan blade.

[0028] Figure 10 It is a structural diagram of the stator.

[0029] Figure 11 It is a structural diagram of the rotor and fan blades.

[0030] Figure markings: 1. front shell; 2. first outer ring; 3. pressure plate; 4. motor mounting seat; 5. pressurized air outlet duct; 6. motor; 7. fan blade; 8. rear shell; 9. pressure surface; 10. air inlet duct; 11. pressurized surface; 12. hub; 13. blade; 14. blade top; 15. blade root; 16. stator; 17. rotor; 18. boss; 19. storage part; 20. iron core; 21. coil; 22. rotating shaft; 23. magnetic ring; 24. air inlet grille; 25. battery; 26. cover. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] 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.

[0033] like Figure 1-8As shown, a speed-increasing airflow mixing generator is provided, comprising: a front shell 1, the front shell 1 being arranged in the air outlet direction; the front shell 1 comprising a first outer ring 2, one or more pressure plates 3 and a motor mounting seat 4; the pressure plates 3 being distributed on the outer peripheral edge of the motor mounting seat 4 and extending to the inner wall of the first outer ring 2; the inner wall of the first outer ring 2 and the outer wall of the motor mounting seat 4 forming a pressurized air outlet duct 5, the pressurized air outlet duct 5 radially shrinking from the air inlet direction to the air outlet direction; a motor 6, the motor 6 being arranged on the motor mounting seat 4; a fan blade 7, the fan blade 7 is arranged at the output end of the motor 6; the rear shell 8, the rear shell 8 is arranged in the air inlet direction, and the rear shell 8 cooperates with the front shell 1; the inner wall of the rear shell 8 is provided with a radially increasing pressurized surface 9 from the air inlet direction to the air outlet direction, and an air inlet duct 10 is formed between the inner wall of the rear shell 8 and the fan blades 7; wherein, when the motor 6 drives the fan blades 7 to rotate, negative pressure is generated, and the air flow is blown out from the air inlet direction to the air outlet direction through the radially increasing air inlet duct 10 and the radially contracting pressurized air outlet duct 5 in sequence to increase the air volume and air supply distance of the air flow.

[0034] In view of the technical problems described in the background art, in the above technical solution, the motor mount 4 and the front shell 1 can be integrally formed or independent components, and the motor mount 4 can be arranged in the air inlet direction or the air outlet direction of the front shell 1. As an implementable technical method, the motor mount 4 and the front shell 1 are integrally formed and the motor mount 4 is arranged on the side of the front shell 1 close to the air inlet direction. The pressure plates 3 can be evenly or unevenly distributed between the first outer ring 2 and the motor mount 4. Preferably, the pressure plates 3 are evenly distributed around the circumference. Since the pressure plates 3 are arranged between the motor mount 4 and the inner wall of the first outer ring 2, the radial ventilation area formed between the motor mount 4 and the inner wall of the first outer ring 2 is reduced, so that the airflow passing through the motor mount 4 and the inner wall of the first outer ring 2 is pressurized and accelerated; the number of pressure plates 3 can be set according to the specific implementation situation, and there is no limit on the number of pressure plates 3. At the same time, a pressurized air outlet duct 5 is formed between the inner wall of the first outer ring 2 and the outer wall of the motor mounting base 4. The pressurized air outlet duct 5 radially contracts from the air inlet direction to the air outlet direction to form a shrinking structure. When the air flow passes through the pressurized air outlet duct 5, its radial ventilation area gradually becomes smaller, thereby pressurizing and increasing the speed of the air flow.

[0035] As for the rear shell 8, the rear shell 8 is used to cooperate with the front shell 1. In the design of the rear shell 8, the inner wall of the rear shell 8 is designed to be provided with a radially increasing pressure surface 9 from the air inlet direction to the air outlet direction, and an air inlet duct 10 is formed between the pressure surface 9 and the fan blades 7. Then, when the air flow enters the air inlet duct 10 from outside the rear shell 8, the air flow is pressurized and accelerated.

[0036] When in use, a pressurized air outlet duct 5 that radially contracts from the air inlet direction to the air outlet direction is designed at the front shell 1, and a radially increasing pressure surface 9 is provided on the inner wall of the rear shell 8 from the air inlet direction to the air outlet direction. When the motor 6 is driven to rotate, more air can be pumped in the surrounding directions of the rear shell 8. At the same time, the air inlet duct 10 formed between the pressure surface 9 and the fan blades 7 can pressurize and accelerate the airflow. Furthermore, when the airflow is directed to the pressurized air outlet duct 5, the radially contracted pressurized air outlet duct 5 further pressurizes and accelerates the airflow, thereby increasing the air volume and air supply distance.

[0037] refer to Figure 4 As shown, the outer peripheral surface of the motor mounting seat 4 radially increases from the air inlet direction to the air outlet direction to form a boost surface 11, and forms the boost outlet duct 5 radially contracted from the air inlet direction to the air outlet direction with the inner wall of the first outer ring 2.

[0038] As a preferred embodiment, the outer peripheral surface of the motor mounting seat 4 radially increases from the air inlet direction to the air outlet direction to form a boost surface 11, and the boost surface 11 and the inner wall of the first outer ring 2 are wedge-shaped in cross section, that is, the radial ventilation area of ​​the boost outlet duct 5 on the side close to the air inlet direction is larger than the radial ventilation area of ​​the boost outlet duct 5 on the side close to the air outlet direction, so that when the air flow enters, the air flow can be pressurized and accelerated.

[0039] like Figure 9 As shown, the fan blade 7 includes a hub portion 12 and blades 13 evenly arranged on the outer peripheral surface of the hub portion 12, and the blade 13 includes a blade top 14 and a blade root 15. The blade top 14 is located in the wind inlet direction, and the blade root 15 is located in the wind outlet direction. The length of the blade top 14 is greater than the length of the blade root 15, so that when the blade 13 rotates, the air volume around the rear shell 8 is drawn.

[0040] Specifically, in the design of the fan blade 7, the length of the blade top 14 is greater than the length of the blade root 15, so that when the fan blade 7 rotates, it can generate a larger negative pressure, draw the airflow around the rear shell 8, and increase the air volume.

[0041] refer to Figure 2 、 Figure 4 、 Figure 10 and Figure 11 As shown, the motor 6 includes a stator 16 and a rotor 17. The stator 16 is fixed to the motor mounting base 4. The rotor 17 is arranged on the fan blade 7. The rotor 17 is sleeved on the stator 16. In practice, the motor 6 can be a brushed motor or a brushless motor.

[0042] The motor mounting base 4 is provided with a boss 18 extending axially and having a hollow interior; the fan blade 7 includes a hub portion 12 and blades 13 evenly arranged on the outer peripheral surface of the hub portion 12, and the hub portion 12 has a receiving portion 19 that is recessed inward; the stator 16 includes an iron core 20 inserted on the boss 18 and a coil 21 wound on the iron core 20; the rotor 17 includes a rotating shaft 22 axially arranged on the receiving portion 19 and a magnetic ring 23 attached to the radial inner wall of the receiving portion 19, and the rotating shaft 22 is inserted in the boss 18.

[0043] Preferably, as an implementable technical solution, the motor 6 adopts an outer rotor brushless motor. Structurally, the hub portion 12 of the fan blade 7 is provided with a storage portion 19, the fan blade 7 is used as the installation position of the rotor 17, and the magnetic ring 23 and the rotating shaft 22 of the rotor 17 are arranged at the storage portion 19 position, thereby optimizing the structure and saving the number of components. At the same time, a hollow boss 18 is provided on the motor mounting seat 4 to facilitate the insertion of the rotating shaft 22 into the boss 18 for positioning. At the same time, the iron core 20 and the coil 21 of the stator 16 can be sleeved on the boss 18 for positioning. The fan blade 7 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.

[0044] The present invention includes a driving circuit board, which is electrically connected to the motor 6 to drive the motor 6 to rotate the fan blades 7. The driving circuit board is not drawn in the figure.

[0045] In implementation, the driving circuit board can be built-in or external. When built-in, it can be installed on the front shell 1 or the rear shell 8. When external, it can be installed by setting up an additional shell. There is no limitation on this. The driving circuit board is mainly used to drive and control various components.

[0046] The present invention includes a power supply interface for providing power, which is electrically connected to the driver circuit board. The power supply interface can be used as a connecting wire, such as a plug and socket connection for power supply. The power supply interface is not shown in the figure.

[0047] The rear shell 8 is provided with an air inlet grille 24 at the air inlet end. The air inlet grille 24 includes connecting strips evenly distributed around the circumference. The connecting strips extend radially to connect to the inner wall of the rear shell 8 to form a gap to prevent foreign matter from entering.

[0048] The present invention includes a battery 25 , which is electrically connected to the power supply interface so as to charge the battery 25 and store electricity.

[0049] Furthermore, a cover 26 is included, which is arranged on one side of the motor mounting base 4 close to the air outlet direction. The cover 26 can be used as a decorative cover or for installing a cover with a display screen, which can be used to display information such as power, wind speed gear, etc.

[0050] 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. A speed-increasing airflow mixing generator, characterized in that: include: A front shell, the front shell being arranged in the air outlet direction; the front shell comprising a first outer ring, one or more pressure plates, and a motor mounting seat; the pressure plates being distributed around the outer peripheral edge of the motor mounting seat and extending to the inner wall of the first outer ring; the inner wall of the first outer ring and the outer wall of the motor mounting seat forming a pressurized air outlet duct, the pressurized air outlet duct radially contracting from the air inlet direction to the air outlet direction; a motor, wherein the motor is arranged on the motor mounting seat; fan blades, the fan blades being arranged at an output end of the motor; A rear shell, the rear shell being arranged in the air inlet direction and cooperating with the front shell; an inner wall of the rear shell being provided with a radially increasing pressure surface from the air inlet direction to the air outlet direction, and an air inlet duct being formed between the inner wall of the rear shell and the fan blades; Among them, when the motor drives the fan blades to rotate, negative pressure is generated, and the airflow is blown out from the air inlet direction to the air outlet direction through the radially increasing air inlet duct and the radially contracting boost air outlet duct to increase the air volume and air supply distance of the airflow.

2. The speed-increasing airflow mixing generator according to claim 1, characterized in that: The outer peripheral surface of the motor mounting seat radially increases from the air inlet direction to the air outlet direction to form a supercharging surface, and forms the supercharging air outlet duct radially contracted from the air inlet direction to the air outlet direction with the inner wall of the first outer ring.

3. The speed-increasing airflow mixing generator according to claim 1, characterized in that: The fan blade includes a hub portion and blades evenly arranged on the outer peripheral surface of the hub portion, and the blade includes a blade top and a blade root portion. The blade top is located in the wind inlet direction, and the blade root is located in the wind outlet direction. The length of the blade top is greater than the length of the blade root portion, so that when the blade rotates, the air volume around the rear shell is drawn.

4. The speed-increasing airflow mixing 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.

5. The speed-increasing airflow mixing generator according to claim 4, 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.

6. The speed-increasing airflow mixing generator according to any one of claims 1 to 5, 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.

7. The speed-increasing airflow mixing generator according to claim 6, 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.

8. The speed-increasing airflow mixing generator according to claim 6, characterized in that: The rear shell 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 rear shell to form a gap to prevent foreign matter from entering.

9. The speed-increasing airflow mixing generator according to claim 7, 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.

10. The speed-increasing airflow mixing generator according to claim 6, characterized in that: It comprises a surface cover, which is arranged on a side of the motor mounting base close to the air outlet direction.

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