Desktop type pressurized mixed flow fan

Abstract

The utility model relates to the technical field of fans, and discloses a desktop type pressurized mixed flow fan which comprises a fan body and a base. The fan body comprises a front shell, and the front shell comprises a first outer ring, a pressurizing sheet and a motor mounting seat; the pressurizing sheets are distributed on the motor mounting seat and extend to the inner wall of the first outer ring; a pressurizing surface is arranged on the peripheral surface of the motor mounting seat; the inner wall of the first outer ring and the pressurizing surface 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, each fan blade comprises a hub part and a blade body, and an air guide face is arranged on the peripheral face of each hub part and extends to the pressurizing air outlet channel; the rear shell is matched with the front shell; a pressurizing surface is arranged on the inner wall of the rear shell; the air guide surface and the pressurizing surface form an air inlet duct; when the motor drives the fan blades to rotate, negative pressure is generated, airflow sequentially passes through the air inlet duct and the pressurizing air outlet duct from the air inlet direction to the air outlet direction, and therefore the air volume and the air supply distance of the airflow are increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, especially in a desktop type pressurized mixed flow fan. BACKGROUND

[0002] The desktop fan is the desktop good thing of many people, can charge and is portable, is the biggest advantage of desktop fan.

[0003] In the desktop fan on the market, the structure usually adopted is that the front air outlet cover, the rear air outlet cover and the motor with fan blades are composed, the direct air outlet mode is adopted, the air flow is pushed, the straight-in straight-out mode exists, the problems of low wind pressure and short air supply distance are caused, the air flow blowing cannot be felt at a little far distance, and the cooling cannot be effectively reduced.

[0004] Therefore, the improvement needs to be made. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem in the prior art, provides a desktop type pressurized mixed flow fan to solve the problems in the background art.

[0006] To solve the above technical problems, the utility model adopts the technical scheme as follows: A desktop type pressurized mixed flow fan, comprising: a fan body for driving air flow generation and a base for placing the fan body; wherein, at least a part of the base is movably connected with the fan body to form support for the fan body; the fan body comprises a front shell, which is arranged in the air outlet direction; the front shell comprises a first outer ring, one or more pressurized sheets and a motor mounting seat; the pressurized sheets are distributed on the outer peripheral edge of the motor mounting seat and extend to the inner wall of the first outer ring; the outer peripheral surface of the motor mounting seat increases radially from the air inlet direction to the air outlet direction to form a pressurization surface; the inner wall of the first outer ring and the pressurization surface form a pressurized air outlet air duct, which is radially contracted from the air inlet direction to the air outlet direction; a motor, which is arranged on the motor mounting seat; a fan blade, which is arranged on the output end of the motor, comprises a hub part and blades uniformly arranged on the outer peripheral surface of the hub part, the outer peripheral surface of the hub part increases radially from the air inlet direction to the air outlet direction to form a guide surface, and the guide surface extends to the pressurized air outlet air duct; a rear shell, which is arranged in the air inlet direction, cooperates with the front shell, and is provided with an air inlet grille in the air inlet direction; the inner wall of the rear shell is provided with a pressurization surface which expands radially from the air inlet direction to the air outlet direction, and the guide surface and the pressurization surface form an air inlet air duct which is radially contracted from the air inlet direction to the air outlet direction; wherein, when the motor drives the fan blade to rotate, negative pressure is generated, air flow passes through the air inlet air duct and the pressurized air outlet air duct from the air inlet direction to the air outlet direction in sequence, so as to increase the air volume and the air supply distance of the air flow.

[0007] Further, a driving circuit board is arranged, which is electrically connected with the motor to drive the motor to drive the fan blade to rotate.

[0008] Further, a power supply interface is arranged to supply power, which is electrically connected with the driving circuit board.

[0009] Further, the motor comprises a stator and a rotor, the stator is fixed on the motor mounting seat, the rotor is arranged on the fan blade, and the rotor is sleeved on the stator.

[0010] Further, the motor mounting seat is provided with a convex column which extends along the axial direction and is hollow inside; the hub part is provided with a receiving part which is recessed inwardly; the stator comprises an iron core which is inserted on the convex column and a coil which is wound on the iron core; the rotor comprises a rotating shaft which is arranged axially in the receiving part and a magnetic ring which is attached to the radial inner wall of the receiving part, and the rotating shaft is inserted in the convex column.

[0011] Further, the base comprises a base part and one or more connecting parts; the connecting parts are connected with the base part, and at least a part of the connecting parts are connected with the front shell and / or the rear shell.

[0012] Further, the base is hollow inside, and a first battery is arranged in the base for supplying power to electronic components.

[0013] Further, a face cover is arranged at the position of the motor mounting seat in the air outlet direction, and the face cover forms a mounting space with the motor mounting seat, and a digital display panel is arranged in the mounting space, and the digital display panel is used for displaying and / or controlling parameters.

[0014] Further, a lamp panel for emitting light is arranged in the mounting space.

[0015] Further, a second battery is arranged in the mounting space, and the second battery is used for supplying power to electronic components.

[0016] Compared with the prior art, the desktop type pressure mixed flow fan has the beneficial effects that: the desktop type pressure mixed flow fan mainly forms a pressure boosting air outlet air duct by using the pressure boosting surface of the inner wall of the first outer ring and the outer circumferential surface of the motor pressure boosting seat at the position of the fan body and at the position of the front shell, the pressure boosting air outlet air duct is radially contracted from the air inlet direction to the air outlet direction, and the airflow is boosted in speed at the air outlet direction; at the position of the rear shell, the pressure boosting surface of the rear shell and the air guide surface of the fan blade form an air inlet channel, and the air inlet channel is an air inlet air duct radially contracted from the air inlet direction to the air outlet direction, so that after the airflow is boosted in speed from the air inlet air duct, the airflow is boosted in speed through the pressure boosting air outlet air duct, and the air volume and the air supply distance are increased. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the utility model.

[0018] Figure 2 is another angle structural schematic diagram of the utility model.

[0019] Figure 3 is an explosion structural schematic diagram of the utility model.

[0020] Figure 4 is an explosion structural schematic diagram of the fan body.

[0021] Figure 5 is a sectional view structural schematic diagram of the fan body.

[0022] Figure 6 is a structural schematic diagram of the front shell.

[0023] Figure 7 is a structural schematic diagram of the front shell.

[0024] Figure 8 is a structural schematic view of the front shell.

[0025] Figure 9 is a structural schematic view of the rear shell.

[0026] Figure 10 is a structural schematic view of the rear shell.

[0027] Figure 11 is a structural schematic view of the fan blade.

[0028] Figure 12 is a structural schematic view of the stator.

[0029] Figure 13 is a structural schematic view of the rotor and the fan blade.

[0030] Figure 14 is a structural schematic view of the base.

[0031] Reference signs: 1, fan body; 2, base; 3, front shell; 4, first outer ring; 5, pressurizing piece; 6, motor mounting seat; 7, pressurizing surface; 8, pressurizing outflow air duct; 9, motor; 10, fan blade; 11, hub part; 12, blade; 13, air guide surface; 14, rear shell; 15, air inlet grille; 16, pressurizing surface; 17, air inlet duct; 18, driving circuit board; 19, power supply interface; 20, stator; 21, rotor; 22, protruding column; 23, storage part; 24, iron core; 25, coil; 26, rotating shaft; 27, magnetic ring; 28, base part; 29, connecting part; 30, first battery; 31, surface cover; 32, digital display panel; 33, lamp plate; 34, second battery. DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail in combination with the drawings.

[0033] The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not understood to be limiting of the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings and are merely used for convenience of description and do not indicate or imply that a device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed or implied as limiting the present application. In addition, the terms "first", "second", are used only for the purpose of description and cannot be construed or implied as indicating or implying relative importance or indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the "upper", "above" and "above" of the first feature to the second feature includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] As Figures 1-14As shown, a desktop pressurized mixed-flow fan is provided, comprising: a fan body 1 for driving to generate airflow and a base 2 for placing the fan body 1; wherein at least a part of the base 2 is movably connected with the fan body 1 to form support for the fan body 1; the fan body 1 comprises a front shell 3 arranged in the air outlet direction; the front shell 3 comprises a first outer ring 4, one or more pressurized pieces 5 and a motor mounting seat 6; the pressurized pieces 5 are distributed on the outer peripheral edge of the motor mounting seat 6 and extend to the inner wall of the first outer ring 4; the outer peripheral surface of the motor mounting seat 6 increases radially from the air inlet direction to the air outlet direction to form a pressurized surface 7; the inner wall of the first outer ring 4 and the pressurized surface 7 form a pressurized air outlet air duct 8, which is radially contracted from the air inlet direction to the air outlet direction; a motor 9 is arranged in the motor mounting seat 6; a fan blade 10 is arranged at the output end of the motor 9, the fan blade 10 comprises a hub part 11 and blades 12 uniformly arranged on the outer peripheral surface of the hub part 11, the outer peripheral surface of the hub part 11 increases radially from the air inlet direction to the air outlet direction to form a guide surface 13, and the guide surface 13 extends to the pressurized air outlet air duct 8; a rear shell 14 is arranged in the air inlet direction, the rear shell 14 is matched with the front shell 3, and the rear shell 14 is provided with an air inlet grille 15 in the air inlet direction; the inner wall of the rear shell 14 is provided with a pressurized surface 16 radially expanding from the air inlet direction to the air outlet direction, and the guide surface 13 and the pressurized surface 16 form an air inlet air duct 17 radially contracting from the air inlet direction to the air outlet direction; wherein the motor 9 drives the fan blade 10 to rotate to generate negative pressure, and the airflow sequentially passes through the air inlet air duct 17 and the pressurized air outlet air duct 8 from the air inlet direction to the air outlet direction to increase the airflow volume and the air supply distance.

[0035] In view of the technical problems described in the background art, a desktop pressurized mixed-flow fan is provided, wherein the fan body 1 and the base 2 can be an integrated structure or independent components, preferably the fan body 1 and the base 2 are independent components, the fan body 1 is movably connected with the base 2, and the fan body 1 can be rotated and adjusted with the base 2.

[0036] For the structure of the fan body 1, the motor mounting seat 6 can be integrally formed with the front shell 3 or be a separate component, and the motor mounting seat 6 can be arranged on the air inlet direction or the air outlet direction of the front shell 3. As an implementable technical manner, the motor mounting seat 6 is integrally formed with the front shell 3, and the motor mounting seat 6 is arranged on the side of the front shell 3 close to the air inlet direction. The pressurizing pieces 5 can be uniformly distributed or unevenly distributed between the first outer ring 4 and the motor mounting seat 6, and preferably, the pressurizing pieces 5 are in a circumferentially uniform distribution form. Since the pressurizing pieces 5 are arranged between the motor mounting seat 6 and the inner wall of the first outer ring 4, the radial ventilation area formed between the motor mounting seat 6 and the inner wall of the first outer ring 4 is reduced, so that the airflow between the motor mounting seat 6 and the inner wall of the first outer ring 4 is pressurized and accelerated. The number of pressurizing pieces 5 can be set according to the specific implementation, and the number of pressurizing pieces 5 is not limited. At the same time, the inner wall of the first outer ring 4 and the outer wall of the motor mounting seat 6 form a pressurized air outlet air duct 8, the outer wall of the motor mounting seat 6 is a pressurizing surface 7, the pressurizing surface 7 radially increases from the air inlet direction to the air outlet direction, so that the pressurized air outlet air duct 8 radially contracts from the air inlet direction to the air outlet direction, forming a necked structure. When the airflow passes through the pressurized air outlet air duct 8, the radial ventilation area gradually decreases, so that the airflow is pressurized and accelerated.

[0037] For the rear shell 14, the rear shell 14 is used for cooperation with the front shell 3. In the design of the rear shell 14, the inner wall of the rear shell 14 is designed to have a pressurizing surface 16 radially increasing from the air inlet direction to the air outlet direction. The hub portion 11 of the fan blade 10 is designed to have a guide surface 13 radially increasing from the air inlet direction to the air outlet direction. The pressurizing surface 16 and the guide surface 13 form an air inlet air duct 17, which radially contracts from the air inlet direction to the air outlet direction. Thus, when the airflow enters the air inlet air duct 17 from the outside of the rear shell 14, the airflow is pressurized and accelerated.

[0038] In use, the pressurized air outlet air duct 8 designed to radially contract from the air inlet direction to the air outlet direction at the position of the front shell 3, and the air inlet channel radially contracting from the air inlet direction to the air outlet direction at the inner wall of the rear shell 14. When the motor 9 drives rotation, more air volume can be pumped in the four directions of the rear shell 14. At the same time, the airflow can be pressurized and accelerated after entering the radially contracting air inlet air duct 17. Thus, when the airflow is guided to the radially contracting pressurized air outlet air duct 8, the airflow is further pressurized and accelerated, so that the air volume and the air supply distance are increased.

[0039] Reference Figure 3 As shown in the drawings, the utility model discloses a drive circuit board 18, the drive circuit board 18 electric connection the motor 9, to drive the motor 9 drive the fan blade 10 rotation.

[0040] In the implementation, the driving circuit board 18 can be in a built-in manner or an external manner. When in the built-in manner, the driving circuit board 18 can be mounted on the front shell 3, the rear shell 14 or the base 2. When in the external manner, the driving circuit board 18 can be mounted by setting an additional shell, and no limitation is made thereon. Preferably, the driving circuit board 18 is arranged on the motor mounting seat 6, and the driving circuit board 18 is mainly used for driving and controlling various components.

[0041] As shown in Figure 2 In the implementation, the utility model includes a power supply interface 19 for providing power, and the power supply interface 19 is electrically connected with the driving circuit board 18. The power supply interface 19 can be used as a connecting wire, for example, a plug and a socket are connected to supply power.

[0042] As shown in Figure 3 、 Figure 4 、 Figure 6 、 Figure 12 and Figure 13 Specifically, the motor 9 includes a stator 20 and a rotor 21. The stator 20 is fixed on the motor mounting seat 6, the rotor 21 is arranged on the fan blade 10, and the rotor 21 is sleeved on the stator 20. In the implementation, the motor 9 can be in the form of a brush motor or a brushless motor.

[0043] The motor mounting seat 6 is provided with a convex column 22 extending in the axial direction and hollow inside. The hub portion 11 has a receiving portion 23 arranged inwardly. The stator 20 includes an iron core 24 inserted into the convex column 22 and a coil 25 wound on the iron core 24. The rotor 21 includes a rotating shaft 26 arranged axially in the receiving portion 23 and a magnetic ring 27 arranged radially on the inner wall of the receiving portion 23. The rotating shaft 26 is inserted into the convex column 22.

[0044] Preferably, as one of the implementable technical solutions, the motor 9 is a brushless motor with an outer rotor. In the structure, the hub portion 11 of the fan blade 10 is provided with the receiving portion 23, the fan blade 10 is used as the mounting position of the rotor 21, and the magnetic ring 27 and the rotating shaft 26 of the rotor 21 are arranged at the receiving portion 23 position. Thus, the structure can be optimized, and the number of components can be saved. At the same time, the hollow convex column 22 is arranged on the motor mounting seat 6, which facilitates the insertion of the rotating shaft 26 into the convex column 22 for positioning. At the same time, the iron core 24 and the coil 25 of the stator 20 can be sleeved on the convex column 22 for positioning. The brushless motor with an outer rotor is designed to drive the fan blade 10. In the structure, the number of components can be saved, and the cost can be reduced.

[0045] As shown in Figure 14As shown, the base 2 comprises a base portion 28 and one or more connecting portions 29; the connecting portions 29 are connected with the base portion 28, and at least part of the connecting portions 29 are connected with the front shell 3 and / or the rear shell 14.

[0046] The above provides an implementable base 2 structure for placing a desktop type pressurized mixed flow fan on a desktop or ground or other application scenarios, which mainly comprises a base portion 28 and a connecting portion 29, and the connecting portion 29 is an integrated structure or an independent component structure with the base portion 28. Preferably, the base portion 28 and the connecting portion 29 are an integrated structure, and the connecting portion 29 is preferably two, which are arranged on both sides of the base portion 28 to form a U-shaped structure. The connecting portion 29 is further connected with the fan body 1, wherein the connecting portion 29 is connected with both sides of the front shell 3, or the connecting portion 29 is connected with both sides of the rear shell 14, or the connecting portion 29 is connected with the cooperation position of the front shell 3 and the rear shell 14; preferably, the connecting portion 29 is connected with the cooperation position of the front shell 3 and the rear shell 14, which can save the number of components for fixing the front shell 3 and the rear shell 14, and optimize the structure design.

[0047] In implementation, the base 2 is hollow inside, and a first battery 30 is installed inside the base 2, which is used to power electronic components.

[0048] Reference Figure 3 As shown, the motor mounting seat 6 is provided with a face cover 31 at the position of the air outlet direction, and the face cover 31 forms an installation space with the motor mounting seat 6, and a digital display panel 32 is arranged in the installation space, which is used to display and / or control parameters.

[0049] The digital display panel 32 can be used to display the battery capacity, wind speed gear, and start fan operation and other functions. The digital display panel 32 is arranged at the position of the front shell 3, which is convenient for adjustment and control, and is more convenient to use.

[0050] Further, a lamp panel 33 for emitting light is arranged in the installation space. The lamp panel 33 emits light to provide lighting function.

[0051] Further, a second battery 34 is arranged in the installation space, which is used to power electronic components. In implementation, the first battery 30 and the second battery 34 are arranged on the designed structure, which greatly improves the endurance on the basis of ensuring the size of the product.

[0052] The above is not intended to limit the technical scope of the utility model in any way, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still belong to the technical scope of the utility model.

Claims

1. A table top pressurized mixed flow fan characterized by, The table type pressurized mixed flow fan comprises a fan body for driving air flow and a base for placing the fan body; wherein at least a part of the base is movably connected with the fan body to support the fan body; The fan body comprises a front shell arranged in the air outlet direction; the front shell comprises a first outer ring, one or more pressurized sheets and a motor mounting seat; the pressurized sheets are distributed around the outer edge of the motor mounting seat and extend to the inner wall of the first outer ring; the outer circumferential surface of the motor mounting seat radially increases from the air inlet direction to the air outlet direction to form a pressurized surface; the inner wall of the first outer ring and the pressurized surface form a pressurized air outlet air duct which is radially contracted from the air inlet direction to the air outlet direction; a motor arranged in the motor mounting seat; a fan blade arranged at the output end of the motor, the fan blade comprising a hub portion and blades uniformly arranged on the outer circumferential surface of the hub portion, the outer circumferential surface of the hub portion radially increases from the air inlet direction to the air outlet direction to form a guide surface, and the guide surface extends to the pressurized air outlet air duct; a rear shell arranged in the air inlet direction, the rear shell being matched with the front shell, the rear shell being provided with an air inlet grille in the air inlet direction; the inner wall of the rear shell is provided with a pressurized surface radially expanding from the air inlet direction to the air outlet direction, and the guide surface and the pressurized surface form an air inlet air duct radially contracted from the air inlet direction to the air outlet direction; wherein the motor drives the fan blade to rotate to generate negative pressure, and air flow sequentially passes through the air inlet air duct and the pressurized air outlet air duct from the air inlet direction to the air outlet direction to increase air volume and air supply distance.

2. The table type pressurized mixed flow fan according to claim 1, further comprising a driving circuit board electrically connected with the motor to drive the motor to drive the fan blade to rotate.

3. The table type pressurized mixed flow fan according to claim 2, further comprising a power supply interface for providing power, the power supply interface being electrically connected with the driving circuit board.

4. The table type pressurized mixed flow fan according to claim 1, wherein the motor comprises a stator fixed on the motor mounting seat and a rotor arranged on the fan blade, and the rotor is sleeved on the stator.

5. The table type pressurized mixed flow fan according to claim 4, wherein the motor mounting seat is provided with a convex column extending along the axial direction and hollow inside; the hub portion has a receiving portion arranged inwardly concave; the stator comprises an iron core inserted on the convex column and a coil wound on the iron core; and the rotor comprises a rotating shaft arranged in the receiving portion along the axial direction and a magnetic ring attached to the radial inner wall of the receiving portion, and the rotating shaft is inserted in the convex column.

6. The table type pressurized mixed flow fan according to claim 1, wherein the base comprises a base portion and one or more connecting portions; the connecting portions are connected with the base portion, and at least a part of the connecting portions are connected with the front shell and / or the rear shell.

7. The table type pressurized mixed flow fan according to claim 6, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ The base is hollow inside, a first battery is installed in the base for powering the electronic components.

8. The table type pressurized mixed flow fan according to claim 1, characterized in that: The motor mounting base is provided with a cover in the air outlet direction position, the cover and the motor mounting base form an installation space, a digital display panel is arranged in the installation space, and the digital display panel is used for displaying and / or controlling parameters.

9. The table type pressurized mixed flow fan according to claim 8, characterized in that: A lamp panel for emitting light is arranged in the installation space.

10. The table type pressurized mixed flow fan according to claim 8, characterized in that: A second battery is arranged in the installation space, and the second battery is used for powering the electronic components.

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