Pressurizing mixed flow fan capable of being adjusted in sliding mode and shaking head

Abstract

The utility model relates to the technical field of fans, and discloses a pressurizing mixed flow fan capable of being adjusted in a sliding mode and shaking a head, which comprises a fan head, a sliding adjusting structure and a rotating device. The fan head comprises a first shell, a second shell, a first motor and fan blades. The first shell comprises a first outer ring, a motor mounting seat and a first pressurizing sheet; the inner wall of the first outer ring, the first pressurizing sheet and the motor mounting seat form a first speed-increasing air duct; the second shell comprises a second outer ring, a pressurizing seat and a second pressurizing sheet; the inner wall of the second outer ring, the second pressurizing sheet and the pressurizing seat form a second accelerating 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 a pressurized mixed flow fan which can be slidably adjusted and shakes its head. Background Art

[0002] An electric fan, also known as an electric fan, is a household appliance that uses an electric motor to rotate blades to accelerate air circulation. It is primarily used to cool down and circulate air. It is widely used in homes, offices, shops, hospitals, hotels, and other places.

[0003] Portable fans are small and easy to carry, and can be used in many situations, such as when you go out or when you place them on your desk.

[0004] However, the current portable fans are axial flow fans, which have the problems of low wind pressure and short air supply distance when in use; the air outlet direction is fixed and cannot be adjusted; the air supply range is small and the use is limited.

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

[0006] The technical problem solved by the present invention is to provide a pressurized mixed flow fan that can be slidably adjusted and shakes its head in order to solve the problems raised in the above background technology.

[0007] 18. The fan as claimed in claim 17, wherein the fan is mounted on a vertical cam portion and the fan is mounted on a vertical cam portion. The fan is mounted on a vertical cam portion and the fan is mounted on a vertical cam portion. The fan is mounted on a vertical cam portion and the fan is mounted on a vertical cam portion. The radial ventilation area becomes smaller due to the increase of the first pressure plate, thereby pressurizing and accelerating the airflow; a second shell, the second shell is arranged at the air outlet end of 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 the outer peripheral edge of the booster seat; 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 radial ventilation area of ​​the second speed-increasing air duct becomes smaller due to the increase of the second pressure plate, thereby pressurizing and accelerating the airflow; wherein, the first 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 guided to the second speed-increasing air duct; the airflow 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 airflow passes through the first speed-increasing air duct and the second speed-increasing air duct.

[0008] Furthermore, it includes a third shell, which is arranged at the air outlet end of the second shell; the third shell includes a third outer ring, an air guide seat and one or more third pressure plates; the third pressure plates are distributed on the inner wall of the third outer ring and extend to connect the outer peripheral edge of the air guide seat; the third outer ring, the third pressure plate and the air guide seat form a third speed-increasing air duct, and the third speed-increasing air duct is increased by the third pressure plate, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow so that the airflow is guided and blown out.

[0009] Furthermore, a first transition surface is provided on the outer circumferential surface of the motor mounting seat; a second transition surface is provided on the outer circumferential surface of the boost seat; a third transition surface is provided on the outer circumferential surface of the air guide seat; the first transition surface, the second transition surface and the third transition surface are arranged in sequence to form a uniformly transitioned arc surface or inclined surface to guide the airflow.

[0010] 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.

[0011] Furthermore, the first motor includes 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.

[0012] 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.

[0013] Furthermore, a face cover is provided on one side of the air guide seat close to the air outlet end, and an installation space is provided between the face cover and the air guide seat. A digital display panel is provided in the installation space, and the digital display panel is used to display and / or control parameters; a battery is provided in the installation space, and the battery is used to provide power.

[0014] Furthermore, it includes an air inlet hood, which is provided with a hollow accommodating portion along the air inlet end to the air outlet end, and at least a portion of the accommodating portion extends to the first shell or the second shell or the third shell; to form a portion that wraps the first shell or the first shell, the second shell or the first shell, the second shell, the third shell, or to form a portion that is accommodated in the first shell or the first shell, the second shell or the first shell, the second shell, the third shell; the air inlet hood 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 extend radially to the inner wall of the air inlet hood to form a gap to prevent foreign matter from entering.

[0015] Furthermore, the sliding adjustment structure includes a sliding block fixedly connected to the fan head, a sliding groove provided on the rotating device, and a fixed block placed inside the sliding groove; at least a portion of the sliding block is placed inside the sliding groove and connected to the fixed block; the fan head is driven by external force to move and adjust along the sliding groove.

[0016] Furthermore, the rotating device includes a bottom shell, a mounting shell movably arranged above the bottom shell, a second motor arranged in the mounting shell and a fixed plate arranged in the mounting shell; the second motor is installed in the space formed by the mounting shell and the fixed plate; the output end of the second motor is provided with a rotating plate and a rotating bearing, the fixed plate is provided with a protrusion with a preset rotation stroke, at least a part of the rotating plate is placed between the protrusions, and the rotating plate is fixedly connected to the bottom shell; the rotating bearing is arranged between the fixed plate and the rotating plate; the bottom shell is provided with one or more guide columns with a hollow structure, the guide columns are provided with balls, and the balls are in contact with the bottom surface of the fixed plate to reduce rotational friction.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The fan head adopts a double-speed increasing air duct or a triple-speed increasing air duct. 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 achieve the pressurization of 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 second pressure plate provided in the second speed increasing air duct causes the radial ventilation area to become smaller, and further pressurizes the airflow in the second section; when the airflow passes through the third speed increasing air duct, the third pressure plate provided in the third speed increasing air duct causes the radial ventilation area to become smaller, and further pressurizes the airflow in the third section, thereby increasing the air volume and air supply distance of the airflow.

[0019] 2. Add a rotating device and use it to drive the fan head to rotate to increase the air supply range of the fan head.

[0020] 3. A sliding adjustment structure is set on the fan head. The fan head can be moved and adjusted on the rotating device through the sliding adjustment structure to adjust the air outlet direction.

[0021] 4. 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, the airflow can be guided first and then gathered to adjust the direction of the airflow; or the airflow can be gathered first and then guided to adjust the direction of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an implementation method of the utility model.

[0023] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the fan head.

[0024] Figure 3 yes Figure 1 A cross-sectional view of the fan header.

[0025] Figure 4 It is a structural schematic diagram of another embodiment of the present invention.

[0026] Figure 5 yes Figure 4 Schematic diagram of the structure from another angle.

[0027] Figure 6 yes Figure 4 Schematic diagram of the explosion structure.

[0028] Figure 7 This is a schematic diagram of the exploded structure of the fan head.

[0029] Figure 8 2 is a schematic diagram of the first shell structure.

[0030] Figure 9 Schematic diagram of the second shell structure.

[0031] Figure 10 It is a schematic diagram of the third shell structure.

[0032] Figure 11 This is a cross-sectional diagram of the fan head.

[0033] Figure 12 This is a partial cutaway diagram of the fan head.

[0034] Figure 13 It is a structural diagram of the fan blade.

[0035] Figure 14 It is a structural diagram of the fan blades, stator and rotor.

[0036] Figure 15 It is a structural diagram of the air inlet cover.

[0037] Figure 16 It is a structural diagram of the sliding adjustment structure.

[0038] Figure 17 It is a structural diagram of the sliding adjustment structure.

[0039] Figure 18 It is a cross-sectional schematic diagram of the sliding adjustment structure and the rotating device.

[0040] Figure 19 It is a structural diagram of the rotating device.

[0041] Figure 20 It is a schematic diagram of the exploded structure of the rotating device.

[0042] Figure 21 It is a schematic diagram of the cross-sectional structure of the rotating device.

[0043] Figure 22 It is a partial schematic diagram of the rotating device.

[0044] Figure 23 It is a partial schematic diagram of the rotating device.

[0045] Figure numerals: 1, fan head; 2, sliding adjustment structure; 3, rotating device; 4, first shell; 5, second shell; 6, first motor; 7, fan blade; 8, first outer ring; 9, motor mounting seat; 10, first pressure plate; 11, first speed-increasing air duct; 12, second outer ring; 13, boosting seat; 14, second pressure plate; 15, second speed-increasing air duct; 16, third shell; 17, third outer ring; 18, air guide seat; 19, third pressure plate; 20, third speed-increasing air duct; 21, first transition surface; 22, second Transition surface; 23. Third transition surface; 24. Stator; 25. Rotor; 26. Boss; 27. Hub; 28. Blade; 29. ​​Storage portion; 30. Iron core; 31. Coil; 32. Rotating shaft; 33. Magnetic ring; 34. Surface cover; 35. Digital display panel; 36. Air inlet cover; 37. Storage portion; 38. Sliding block; 39. Slide groove; 40. Fixed block; 41. Bottom shell; 42. Mounting shell; 43. Second motor; 44. Fixed plate; 45. Rotating piece; 46. Rotating bearing; 47. Protrusion; 48. Guide column. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below with reference to the accompanying drawings.

[0047] 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.

[0048] like Figure 1-11As shown, a pressurized mixed flow fan with sliding adjustment and shaking head is provided, comprising: a fan head 1 for driving to generate air flow, a sliding adjustment structure 2 and a rotating device 3; wherein the fan head 1 is connected to the sliding adjustment structure 2; the sliding adjustment structure 2 is connected to the rotating device 3, and the fan head 1 is moved and adjusted on the rotating device 3 through the sliding adjustment structure 2; the fan head 1 comprises a first shell 4, a second shell 5, a first motor 6 and fan blades 7; the first shell 4 is located at the air inlet end; the first shell 4 comprises a first outer ring 8, a motor mounting seat 9 and one or more first pressure plates 10; the first motor 6 is arranged on the motor mounting seat 9; the fan blades 7 are arranged on the output end of the first motor 6; the first pressure plates 10 are distributed on the inner wall of the first outer ring 8 and extend to connect the outer peripheral edge of the motor mounting seat 9; the inner wall of the first outer ring 8, the first pressure plate 10 and the motor mounting seat 9 form a first speed-increasing air duct 11, and the first speed-increasing air duct 11 increases the diameter through the first pressure plate 10 The ventilation area becomes smaller, thereby pressurizing and accelerating the airflow; the second shell 5, the second shell 5 is arranged at the air outlet end of the first shell 4; the second shell 5 includes a second outer ring 12, a boost seat 13 and one or more second pressurizing plates 14; the second pressurizing plates 14 are distributed on the inner wall of the second outer ring 12 and extend to be connected to the outer peripheral edge of the boost seat 13; the inner wall of the second outer ring 12, the second pressurizing plate 14 and the boost seat 13 form a second speed-increasing air duct 15, and the second speed-increasing air duct 15 is increased by the second pressurizing plate 14, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow; wherein, the first motor 6 drives the fan blades 7 to rotate, generating a negative pressure at the air inlet end to guide the airflow to the first speed-increasing air duct 11; the airflow is pressurized by the first pressurizing plate 10 on the first outer ring 8 and directed to the second speed-increasing air duct 15; the airflow is pressurized and blown out by the second pressurizing plate 14 in the second speed-increasing air duct 15, so that the air volume and air supply distance are increased after the airflow is accelerated through the first speed-increasing air duct 11 and the second speed-increasing air duct 15.

[0049] In view of the technical problems described in the background art, a pressurized mixed flow fan with sliding adjustment and oscillating motion is provided, which mainly includes a fan head 1 , a sliding adjustment structure 2 and a rotating device 3 .

[0050] The sliding adjustment structure 2 is provided between the fan head 1 and the rotating device 3. The sliding adjustment structure 2 is used to enable the fan head 1 to move on the rotating device 3, thereby adjusting the air outlet direction of the fan head 1. Optionally, the fan head 1 can be moved left and right on the rotating device 3 for adjustment, or the fan head 1 can be moved forward and backward on the rotating device 3 for adjustment. The movement adjustment trajectory of the fan head 1 can be an arc or a straight line. Preferably, since the contact surface between the fan head 1 and the rotating device 3 is an arc, the movement adjustment trajectory of the fan head 1 is an arc.

[0051] The rotating device 3 is connected to the sliding adjustment structure 2, and indirectly drives the fan head 1 to rotate, thereby increasing the air supply range.

[0052] The fan head 1 is used to drive and generate airflow. The fan head 1 mainly includes a first housing 4, a second housing 5, a first motor 6 and fan blades 7.

[0053] like Figure 8 , the first shell 4 includes a motor mounting seat 9, a first pressure plate 10 and a first outer ring 8. The motor mounting seat 9 and the first outer ring 8 can be integrally formed or independent components. The motor mounting seat 9 can be set at the air inlet end or the air outlet end of the first outer ring 8. As an implementable technical method, the motor mounting seat 9 and the first outer ring 8 are integrally formed and the motor mounting seat 9 is set at the air outlet end of the first outer ring 8. The first pressure plate 10 can be evenly distributed or unevenly distributed between the first outer ring 8 and the motor mounting seat 9. Preferably, the first pressure plate 10 is evenly distributed around the circumference. Due to the presence of the first pressure plate 10, the radial ventilation area of ​​the airflow passing through the first outer ring 8 becomes smaller, and the first shell 4 is located at the air inlet end. The airflow can absorb the airflow around and increase the air volume; at the same time, the airflow is pressurized and the airflow speed is increased.

[0054] like Figure 9 The second housing 5 includes a second outer ring 12, a pressurizing seat 13, and a second pressurizing plate 14. These may be integrally formed or separate components. Preferably, they are integrally formed. The second housing 5 may be integrally formed with the first housing 4 or separate components. The second pressurizing plate 14 may be evenly or unevenly distributed between the second outer ring 12 and the pressurizing seat 13. Preferably, the second pressurizing plate 14 is evenly distributed around the circumference. The presence of the second pressurizing plate 14 in the second speed-increasing air duct 15 reduces the radial ventilation area of ​​the airflow passing through the second outer ring 12, further pressurizing the airflow and increasing its velocity.

[0055] In this way, by setting up a double speed-increasing air duct form, when the flow passes through the first speed-increasing air duct 11, the first pressure plate 10 set in the first speed-increasing air duct 11 causes the radial ventilation area to become smaller to achieve pressurization of the airflow. At the same time, the first speed-increasing air duct 11 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 15, the second pressure plate 14 set in the second speed-increasing air duct 15 causes the radial ventilation area to become smaller, further pressurizing and blowing out the airflow in the second stage, thereby increasing the air volume and air supply distance.

[0056] The present invention also includes a third shell 16, which is arranged at the air outlet end of the second shell 5; the third shell 16 includes a third outer ring 17, an air guide seat 18 and one or more third pressure plates 19; the third pressure plates 19 are distributed on the inner wall of the third outer ring 17 and extend to connect the outer peripheral edge of the air guide seat 18; the third outer ring 17, the third pressure plates 19 and the air guide seat 18 form a third speed-increasing air duct 20, and the third speed-increasing air duct 20 is increased by the third pressure plate 19, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow so as to guide the airflow to be blown out

[0057] like Figure 10 The third housing 16 includes a third outer ring 17, an air guide seat 18, and a third pressure plate 19. The third outer ring 17, air guide seat 18, and third pressure plate 19 can be integrally formed or separate components. Preferably, the third outer ring 17, air guide seat 18, and third pressure plate 19 are integrally formed. The third housing 16 can be integral with the second housing 5, or integral with the second housing 5 and the first housing 4, or the third housing 16, the second housing 5, and the first housing 4 can be separate components. The third pressure plate 19 can be evenly or unevenly distributed between the third outer ring 17 and the air guide seat 18. Preferably, the third pressure plate 19 is evenly distributed around the circumference. The presence of the third pressure plate 19 in the third speed-increasing air duct 20 reduces the radial ventilation area of ​​the airflow passing through the third outer ring 17, further pressurizing the airflow and increasing its velocity.

[0058] The above-mentioned adopts a three-speed increasing duct form. When the airflow passes through the first speed increasing duct 11, the first pressure plate 10 provided in the first speed increasing duct 11 causes the radial ventilation area to become smaller to achieve pressurization of the airflow. At the same time, the first speed increasing duct 11 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 duct 15, the second pressure plate 14 provided in the second speed increasing duct 15 causes the radial ventilation area to become smaller, and further pressurizes the airflow in the second stage; when the airflow passes through the third speed increasing duct 20, the third pressure plate 19 provided in the third speed increasing duct 20 causes the radial ventilation area to become smaller, and further pressurizes the airflow in the third stage, thereby achieving an increase in the air volume and air supply distance of the airflow.

[0059] like Figure 8-10 and Figure 12 As shown, a first transition surface 21 is provided on the outer circumferential surface of the motor mounting seat 9; a second transition surface 22 is provided on the outer circumferential surface of the boost seat 13; a third transition surface 23 is provided on the outer circumferential surface of the air guide seat 18; the first transition surface 21, the second transition surface 22 and the third transition surface 23 are arranged in sequence to form a uniformly transitioned arc surface or inclined surface to guide the airflow.

[0060] As a preferred embodiment, the outer circumferential surface of the motor mounting seat 9 is provided with a first transition surface 21 from the air inlet end to the air outlet end, the outer circumferential surface of the booster seat 13 is provided with a second transition surface 22 from the air inlet end to the air outlet end, and the outer circumferential surface of the air guide seat 18 is provided with a third transition surface 23 from the air inlet end to the air outlet end. The first transition surface 21, the second transition surface 22 and the third transition surface 23 increase radially and are in close contact from the air inlet end to the air outlet end. Through the structure, the first transition surface 21, the second transition surface 22 and the third transition surface 23 form an arc surface or an inclined surface, and there is no gap between the first transition surface 21, the second transition surface 22 and the third transition surface 23. On the one hand, during the blowing process, the airflow is guided to blow out through the first transition surface 21, the second transition surface 22 and the third transition surface 23. Due to the radial increase structure, the airflow can be pressurized, the air pressure of the airflow can be increased, the air supply distance can be increased, and on the other hand, due to the close contact of the first transition surface 21, the second transition surface 22 and the third transition surface 23, the wind noise can be reduced, and the airflow can be guided to blow out.

[0061] Reference Figure 8-9 As shown, the first pressurizing piece 10 is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressurizing piece 10 of the first speed-increasing air duct 11 guides the airflow in the same direction or aggregates the airflow in the opposite direction to the second speed-increasing air duct 15. The second pressurizing piece 14 is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressurizing piece 14 blows out the airflow in the opposite direction or in the same direction, achieving the effect of pressurizing and aggregating the airflow.

[0062] In an implementable manner, the first pressurizing piece 10 is arranged clockwise and the second pressurizing piece 14 is arranged counterclockwise. Since the airflow moves centrifugally along the periphery of the fan blade 7 under the driving of the fan blade 7, the first pressurizing piece 10 of the first speed-increasing air duct 11 is arranged in the opposite direction of the airflow movement, and the first pressurizing piece 10 aggregates the wind moving in all directions to change the flow direction of the airflow. The airflow passing through the first speed-increasing air duct 11 is guided to the second speed-increasing air duct 15, and the second pressurizing piece 14 of the second speed-increasing air duct 15 is arranged counterclockwise. Since the counterclockwise arrangement of the second pressurizing piece 14 is the same as the movement direction of the airflow, the second pressurizing piece 14 guides the aggregated airflow, and then the wind passing through the second speed-increasing air duct 15 blows out in the front. Avoiding the dispersion of the airflow, causing the loss of air volume, achieving the effect of aggregating and pressurizing the airflow.

[0063] In another feasible method, the first pressure plate 10 is set counterclockwise and the second pressure plate 14 is set clockwise. As the airflow passes through the fan blades 7, the airflow moves centrifugally along the four directions of the fan blades 7. The setting direction of the first pressure plate 10 of the first speed increasing duct 11 is the same as the direction of the airflow movement. The first pressure plate 10 will guide and pressurize the wind moving in all directions. Since the clockwise setting of the second pressure plate 14 is opposite to the direction of the airflow movement, the second pressure plate 14 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.

[0064] refer to Figure 13-14 As shown, the first motor 6 includes a stator 24 and a rotor 25. The stator 24 is fixed to the motor mounting base 9, and the rotor 25 is arranged on the fan blade 7. The rotor 25 is sleeved on the stator 24. In practice, the first motor 6 can be a brushed motor or a brushless motor.

[0065] The motor mounting seat 9 is provided with a boss 26 extending axially and hollow inside; the fan blade 7 includes a hub portion 27 and blades 28 evenly arranged on the outer peripheral surface of the hub portion 27, and the hub portion 27 has a receiving portion 29 recessed inwardly; the stator 24 includes an iron core 30 inserted on the boss 26 and a coil 31 wound on the iron core 30; the rotor 25 includes a rotating shaft 32 axially arranged on the receiving portion 29 and a magnetic ring 33 attached to the radial inner wall of the receiving portion 29, and the rotating shaft 32 is inserted in the boss 26.

[0066] Preferably, as an implementable technical solution, the first motor 6 adopts an outer rotor brushless motor. Structurally, the hub 27 of the fan blade 7 is provided with a storage portion 29, and the fan blade 7 is used as the installation position of the rotor 25. The magnetic ring 33 and the rotating shaft 32 of the rotor 25 are set at the storage portion 29 position, thereby optimizing the structure and saving the number of components. At the same time, a hollow boss 26 is provided on the motor mounting seat 9 to facilitate the insertion of the rotating shaft 32 into the boss 26 for positioning. At the same time, the iron core 30 and the coil 31 of the stator 24 can be sleeved on the boss 26 for positioning. The fan blade 7 is driven by the designed outer rotor 25 brushless motor structure, which can be more compact in structure, save the number of components, and thus reduce costs.

[0067] like Figure 7As shown, a face cover 34 is provided on one side of the air guide seat 18 close to the air outlet end. There is an installation space between the face cover 34 and the air guide seat 18. A digital display panel 35 is provided in the installation space. The digital display panel 35 is used to display and / or control parameters. A battery is provided in the installation space. The battery is used to provide power. The digital display panel 35 can be used to display the battery power level, wind speed level, and to start the fan operation and other functions. In use, the fan can be directly connected to an external power source through a power supply interface for power supply and drive, or the fan can be powered by a battery, or a combination of the two.

[0068] refer to Figure 15 As shown, it includes an air inlet cover 36, and the air inlet cover 36 is provided with a hollow accommodating portion 37 along the air inlet end to the air outlet end, and at least a portion of the accommodating portion 37 extends to the first shell 4 or the second shell 5 or the third shell 16; to form a portion that wraps the first shell 4 or the first shell 4, the second shell 5 or the first shell 4, the second shell 5, the third shell 16, or to form a portion that is accommodated in the first shell 4 or the first shell 4, the second shell 5 or the first shell 4, the second shell 5, the third shell 16; the air inlet cover 36 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 extend radially to the inner wall of the air inlet cover to form a gap to prevent foreign matter from entering.

[0069] An air inlet cover 36 is added. The air inlet cover 36 is a hollow structure with a receiving portion 37. The air inlet cover 36 can be set on one side of the first shell 4. In a first embodiment, the air inlet cover 36 can receive the first shell 4, the second shell 5, and the third shell 16 through the receiving portion 37; in a second embodiment, the air inlet cover 36 can receive the first shell 4 and the second shell 5 through the receiving portion 37; in a third embodiment, the air inlet cover 36 can receive the first shell 4; in a fourth embodiment, the receiving portion 37 of the air inlet cover 36 can be received in the first shell 4, the second shell 5, and the third shell 16; in a fifth embodiment, the receiving portion 37 of the air inlet cover 36 can be received in the first shell 4 and the second shell 5; in a sixth embodiment, the receiving portion 37 of the air inlet cover 36 can be received in the first shell 4. Preferably, the present invention adopts the sixth embodiment, and an air inlet grille is provided on the air inlet cover 36 to prevent foreign matter from entering the interior of the fan head 1.

[0070] refer to Figure 16-18As shown, the sliding adjustment structure 2 includes a sliding block 38 fixedly connected to the fan head 1, a sliding groove 39 provided on the rotating device 3, and a fixed block 40 placed inside the sliding groove 39; at least a portion of the sliding block 38 is placed inside the sliding groove 39 and connected to the fixed block 40; the fan head 1 is driven by external force to move and adjust along the sliding groove 39.

[0071] Specifically, the sliding adjustment structure 2 includes a sliding block 38, a slot 39, and a fixed block 40. The sliding block 38 is screwed to the fan head 1. The contact surface between the sliding block 38 and the rotating device 3 is an arc. A portion of the sliding block 38 extends into the slot 39, and then is screwed together with the fixed block 40 to adjust the tightness. During use, under the action of an external force, the sliding block 38 is pushed along the slot 39. Since the fan head 1 is fixedly connected to the sliding block 38, the fan head 1 can be moved along the arc to adjust the air outlet angle and position of the fan head 1.

[0072] refer to Figure 19-23 As shown, the rotating device 3 includes a bottom shell 41, a mounting shell 42 movably arranged above the bottom shell 41, a second motor 43 arranged in the mounting shell 42 and a fixed plate 44 arranged in the mounting shell 42; the second motor 43 is installed in the space formed by the mounting shell 42 and the fixed plate 44; the output end of the second motor 43 is provided with a rotating piece 45 and a rotating bearing 46, the fixed plate 44 is provided with a protrusion 47 with a preset rotation stroke, at least a part of the rotating piece 45 is placed between the protrusions 47, and the rotating piece 45 is fixedly connected to the bottom shell 41; the rotating bearing 46 is arranged between the fixed plate 44 and the rotating piece; the bottom shell 41 is provided with one or more guide columns 48 with a hollow structure, and the guide columns 48 are provided with balls, and the balls are in contact with the bottom surface of the fixed plate 44 to reduce rotational friction.

[0073] Specifically, the above is a rotatable device 3 structure that can be implemented, mainly including a bottom shell 41, a mounting shell 42, a second motor 43, and a fixed plate 44, the second motor 43 is fixed on the mounting shell 42 by screws, the fixed plate 44 is fixed on the mounting shell 42 by screws, the bottom shell 41 and the mounting shell 42 are in a cylindrical structure, the mounting shell 42 can be sleeved on the bottom shell 41, the mounting shell 42 is movably connected with the bottom shell 41, and the mounting shell 42 can rotate relative to the bottom shell 41. A rotating piece 45 and a rotating bearing 46 are sequentially arranged at the output end of the second motor 43, the rotating piece 45 can be placed on the inner side of the fixed plate 44, the fixed plate 44 is provided with protrusions 47 arranged at intervals at a position relative to the rotating piece 45, the rotating piece 45 is provided with an extension part arranged between the protrusions 47, and the extension part can be used to control rotation. When the second motor 43 drives the fixed plate 44 to rotate, the protrusions 47 on the fixed plate 44 collide with the rotating piece 45 to limit the rotation stroke. The rotating bearing 46 is arranged between the fixed plate 44 and the rotating piece 45, so that when the second motor 43 rotates, the fixed plate 44 rotates, and the rotating piece 45 does not rotate. In order to further reduce friction during rotation, ball contact is adopted between the bottom shell 41 and the mounting plate to realize rolling friction.

[0074] In use, when the rotatable device 3 is placed on the desktop, the bottom shell 41 is fixed on the desktop and does not move, and the second motor 43 is driven. Since the output end of the second motor 43 is embedded with the rotating piece 45, the rotating piece 45 is fixed with the bottom shell 41 by screws, and then the body of the second motor 43 rotates. Since the second motor 43 is indirectly fixedly connected with the mounting plate through the mounting shell 42, the fixed plate 44 and the mounting shell 42 are driven to rotate on the bottom shell 41. Since the mounting shell 42 is connected with the sliding adjustment structure, the fan head is indirectly driven to rotate, rotation is realized, and the air supply range is increased.

[0075] The protrusions 47 arranged on the fixed plate 44 are used to control the rotation range by the interval distance between the protrusions 47. When the second motor 43 is driven to rotate, the protrusions 47 on the fixed plate 44 rotate and contact the rotating piece 45, the second motor 43 is reversed, the other protrusion 47 contacts the rotating piece 45, the second motor 43 is reversed, and the reciprocation is realized.

[0076] The number of hollow structure guide columns 48 on the bottom shell 41 can be implemented according to actual conditions, preferably, four guide columns 48 are evenly distributed, and balls are installed above the guide columns 48, which are not shown in the figure. The balls are in contact with the fixed plate 44, and in the process of rotation of the fixed plate 44, the balls reduce friction in the form of rolling.

[0077] The above is not intended to limit the technical scope of the present application in any way, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belong to the technical scope of the present application.

Claims

1. A pressurized mixed flow fan that can be slidably adjusted and shakes its head, characterized in that: include: A fan head, a sliding adjustment structure, and a rotating device for driving an airflow; Wherein, the fan head is connected to the sliding adjustment structure; the sliding adjustment structure is connected to the rotating device, and the fan head is moved and adjusted on the rotating device through the sliding adjustment structure; The fan head includes a first shell, a second shell, a first motor and fan blades; The first shell is located at the air inlet end; the first shell includes a first outer ring, a motor mounting seat and one or more first pressure plates; the first motor is arranged on the motor mounting seat; the fan blades are arranged on the output end of the first motor; the first pressure plates 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 plate and the motor mounting seat form a first speed-increasing air duct, and the first speed-increasing air duct is increased by the first pressure plate, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow; A second shell, the second shell being arranged at the air outlet end of the first shell; the second shell comprising a second outer ring, a boost seat, and one or more second pressurizing sheets; the second pressurizing sheets being distributed on the inner wall of the second outer ring and extending to connect to the outer peripheral edge of the boost seat; the inner wall of the second outer ring, the second pressurizing sheet, and the boost seat forming a second speed-increasing air duct, wherein the radial ventilation area of ​​the second speed-increasing air duct is reduced due to the increase of the second pressurizing sheet, thereby pressurizing and accelerating the airflow; Among them, the first motor drives the fan blades to rotate to generate 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 guided to the second speed-increasing air duct; the airflow is pressurized and blown out through the second pressure plate in the second speed-increasing air duct, so that the air volume and air supply distance are increased after the airflow is accelerated through the first speed-increasing air duct and the second speed-increasing air duct.

2. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 1, characterized in that: It includes a third shell, which is arranged at the air outlet end of the second shell; the third shell includes a third outer ring, an air guide seat and one or more third pressure plates; the third pressure plates are distributed on the inner wall of the third outer ring and extend to connect the outer peripheral edge of the air guide seat; the third outer ring, the third pressure plate and the air guide seat form a third speed-increasing air duct, and the third speed-increasing air duct is increased by the third pressure plate, resulting in a smaller radial ventilation area, thereby pressurizing and accelerating the airflow so that the airflow is guided and blown out.

3. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 2, characterized in that: A first transition surface is provided on the outer circumference of the motor mounting seat; a second transition surface is provided on the outer circumference of the boost seat; a third transition surface is provided on the outer circumference of the air guide seat; the first transition surface, the second transition surface and the third transition surface are arranged in sequence to form a uniformly transitioned arc surface or inclined surface to guide the airflow.

4. The slidably adjustable and oscillating pressurized mixed flow fan 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.

5. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 1, characterized in that: The first 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 is sleeved on the stator.

6. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 5, 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.

7. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 2 or 3, characterized in that: A face cover is provided on one side of the air guide seat close to the air outlet end, and an installation space is provided between the face cover and the air guide seat. A digital display panel is provided in the installation space, and the digital display panel is used to display and / or control parameters; a battery is provided in the installation space, and the battery is used to provide power.

8. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 2, characterized in that: The air inlet cover comprises an air inlet cover, wherein the air inlet cover is provided with a hollow receiving portion from the air inlet end to the air outlet end, and at least a portion of the receiving portion extends to the first shell, the second shell, or the third shell; To form a shell that wraps the first shell or the first shell, the second shell or the first shell, the second shell, the third shell, or to form a shell that is accommodated in the first shell or the first shell, the second shell or the first shell, the second shell, the third shell; the air inlet hood 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 extend radially to be connected to the inner wall of the air inlet hood to form a gap to prevent foreign matter from entering.

9. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 1, characterized in that: The sliding adjustment structure includes a sliding block fixedly connected to the fan head, a sliding groove provided on the rotating device, and a fixed block placed inside the sliding groove; at least a portion of the sliding block is placed inside the sliding groove and connected to the fixed block; the fan head is driven by external force to move and adjust along the sliding groove.

10. The slidably adjustable and oscillating pressurized mixed flow fan according to claim 1, characterized in that: The rotating device includes a bottom shell, a mounting shell movably arranged above the bottom shell, a second motor arranged in the mounting shell, and a fixing plate arranged in the mounting shell; the second motor is installed in a space formed by the mounting shell and the fixing plate; The output end of the second motor is provided with a rotating piece and a rotating bearing. The fixed plate is provided with protrusions with a preset rotation stroke. At least a portion of the rotating piece is positioned between the protrusions. The rotating piece is fixedly connected to the bottom shell. The rotating bearing is disposed between the fixed plate and the rotating piece. The bottom shell is provided with one or more guide pillars with a hollow structure, and the guide pillars are provided with balls. The balls are in contact with the bottom surface of the fixing plate to reduce rotational friction.

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