High-speed booster fan module

Abstract

A high-speed pressurizing fan module comprises an air channel, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the air channel, a fan blade driving set is arranged in the air channel, a pressurizing mechanism is arranged at the air outlet, and the pressurizing mechanism comprises a plurality of air cutting pressurizing blades arranged at the air outlet. The multiple wind cutting pressurizing blades are evenly arranged around the air outlet in the circumferential direction at intervals to form an annular pressurizing air channel, the annular pressurizing air channel and the driving fan blade set are coaxially arranged, a flow guide part is arranged on the side, away from the driving fan blade set, of the pressurizing mechanism, and a rectification pressurizing cover is arranged on the side, away from the pressurizing mechanism, of the flow guide part. Air flow is pressurized and accelerated under the cooperation of the driving fan blade set and the pressurizing mechanism, then the air flow is guided by the flow guide piece to be concentrated and gathered, the utilization rate of the air flow is effectively improved, finally, the air flow is blown out after secondary pressurization and turbulent flow removal are conducted through the rectification pressurizing cover, the air speed is greatly increased, the air supply distance is greatly increased, and meanwhile the mute and noise reduction effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a high-speed boost fan module. Background Art

[0002] When going out or doing outdoor activities in the summer, the weather is relatively hot and there may be no air conditioning. In order to keep cool at any time, portable fans came into being. They are popular because they are easy to carry and can be used at any time.

[0003] However, due to its small size, the electrical components equipped with it can only use relatively small power. Therefore, in previous portable fans, it is impossible to design the wind force to be very large, which also leads to poor wind blowing and cooling effect. Although some manufacturers have applied the structure of traditional booster fans to such small portable fans to increase the wind speed to increase the cooling effect, such as the Chinese patent (authorization announcement number: CN217029352U), it does not take into account the problem of wind turbulence, resulting in very loud noise when it is working, which seriously affects the consumer's user experience and is not conducive to the popularization and application of the product. Utility Model Content

[0004] The purpose of the utility model is to provide a high-speed boost fan module, in which the wind is boosted and accelerated under the cooperation of the fan blade group and the boost mechanism, and then the wind is guided and concentrated by the guide member, thereby effectively improving the utilization rate of the wind. Finally, the wind is boosted for the second time through the fairing and boost cover, and the wind is blown out after the turbulence is removed, which not only greatly improves the wind speed and air supply distance, but also achieves the effect of silent noise reduction, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed boost fan module, comprising an air duct and an air inlet and an air outlet connected to the air duct, a drive fan blade group is arranged in the air duct, the drive fan blade group drives the air located at the air inlet to flow into the air duct and then blow out from the air outlet, a boost mechanism is arranged at the air outlet, a guide member is arranged on the side of the boost mechanism away from the drive fan blade group, a rectifying and boosting cover is arranged on the side of the guide member away from the boost mechanism, the boost mechanism realizes boosting of the wind flow delivered by the drive fan blade group, the guide member guides the wind flow output from the boost mechanism so that the wind flow is blown out in a direction parallel to the axial direction, and the rectifying and boosting cover boosts the wind flow output by the guide member, removes turbulence and then blows it out.

[0006] Preferably, the boost mechanism includes a plurality of wind-cutting boost blades arranged at the air outlet, and the plurality of wind-cutting boost blades are evenly spaced around the circumference of the air outlet to form an annular boost air duct, and the annular boost air duct is coaxially arranged with the drive fan blade group, and the drive fan blade group includes a rotating seat and wind-driving blades evenly arranged on the outer peripheral wall surface of the rotating seat, and the axial projection area of ​​the wind-driving blades is located outside the projection area of ​​the rotating seat and overlaps with the projection area of ​​the annular boost air duct.

[0007] Preferably, the surface of the wind-cutting booster blade facing the outside of the air outlet is the wind receiving surface, and the surface of the wind-expelling blade facing the side of the wind-cutting booster blade is the wind-expelling surface. During the rotation of the wind-expelling fan blade assembly, the curved surface where the wind receiving surface and the curved surface where the wind-expelling surface are located in the same radial region are intersected, and the angle θ1 between the wind receiving surface and the wind-expelling surface is <90°.

[0008] Preferably, the angle θ2 between the wind receiving surface and the central axis of the fan blade assembly satisfies: 30°<θ2<60°.

[0009] Preferably, the angle θ2 between the wind receiving surface and the central axis of the fan blade assembly is 45°.

[0010] Preferably, the guide member includes an annular cover and a blade base coaxially arranged with the annular cover, the circumferential wall surface of the blade base extends outward to form a guide blade, the guide blade is connected to the inner wall of the annular cover at one end away from the blade base, the guide blade is arranged parallel to the central axis of the fan blade assembly, and the area where the guide blade is located covers the air outlet.

[0011] Preferably, a pressure relief protrusion is provided on the side of the blade base away from the air outlet.

[0012] Preferably, the pressure-relieving protrusion is a hemispherical body.

[0013] Preferably, both ends of the fairing and supercharger are open, and the inner diameter of the fairing and supercharger radially decreases from the guide member to the side away from the guide member.

[0014] Preferably, the inner wall of the fairing hood is in a circular tube shape, the inner diameter of the fairing hood is not less than the inner diameter of the guide member, and the length of the fairing hood is not less than 15 mm.

[0015] Preferably, a motor base is arranged at the axis of the air outlet, and the fan blade assembly includes a drive motor, which is mounted on the motor base and located inside the air duct.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model realizes supercharging and speeding up of the wind with the cooperation of the fan blade group and the supercharging mechanism, and then guides the wind to concentrate and converge through the guide member, which effectively improves the utilization rate of the wind. Finally, it is secondary-pressurized through the fairing supercharging cover, and the wind is blown out after the turbulence is eliminated, which not only greatly improves the wind speed and air supply distance, but also achieves the effect of silent noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model structure explosion Figure 1 ;

[0019] Figure 2 The utility model structure explosion Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0022] Figure 5 It is a cross-sectional orientation schematic diagram of the utility model;

[0023] Figure 6 It is the AA cross-sectional view of the utility model.

[0024] In the figure: 1 fairing and supercharging cover; 2 guide member; 21 ring cover; 22 blade base; 23 guide blade; 24 pressure discharge protrusion; 3 air duct; 31 air inlet; 32 air outlet; 33 motor base; 34 wind-cutting and supercharging blade; 35 wind receiving surface; 4 drive fan blade group; 41 rotating seat; 42 wind-driving blade; 43 wind-driving surface; 44 drive motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6A high-speed boost fan module includes an air duct 3 and an air inlet 31 and an air outlet 32 ​​connected to the air duct 3. A fan blade group 4 is arranged in the air duct 3. A motor base 33 is arranged at the axis of the air outlet 32. The fan blade group 4 includes a driving motor 44. The driving motor 44 is installed on the motor base 33 and is located inside the air duct 3. The fan blade group 4 drives the air located at the air inlet 31 to flow into the air duct 3 and then blow out from the air outlet 32. A boost mechanism is provided at the air outlet 32, and a guide member 2 is provided on the side of the boost mechanism away from the fan blade group 4, and a fairing and supercharger cover 1 is provided on the side of the guide member 2 away from the boost mechanism. The boost mechanism boosts the wind flow delivered by the fan blade group 4, and the guide member 2 guides the wind flow output from the boost mechanism so that the wind flow is blown out in parallel to the axial direction. The fairing and supercharger cover 1 boosts the wind flow output by the guide member 2 and blows it out after removing turbulence.

[0027] The boost mechanism includes a plurality of wind-cutting boost blades 34 arranged at the air outlet 32, and the plurality of wind-cutting boost blades 34 are evenly spaced around the air outlet 32 ​​to form an annular boost air duct, and the annular boost air duct is coaxially arranged with the fan blade group 4, and the fan blade group 4 includes a rotating seat 41 and wind-driving blades 42 evenly arranged on the outer peripheral wall of the rotating seat 41, and the axial projection area of ​​the wind-driving blades 42 is located at the outer side of the projection area of ​​the rotating seat 41 and overlaps with the projection area of ​​the annular boost air duct. The overlapping projection area can ensure that the wind driving volume of the wind-driving blades 42 is received by the wind receiving surface of the wind-cutting boost blades 34 to the maximum extent, thereby avoiding the excess air volume from acting on the wind flow from other directions, thereby causing unnecessary turbulence in the wind flow. The surface of the wind-cutting boost blade 34 facing the outside of the air outlet 32 ​​is the wind-receiving surface 35, and the surface of the wind-driving blade 42 facing the side of the wind-cutting boost blade 34 is the wind-driving surface 43. During the rotation of the wind-driving fan blade group 4, the curved surface where the wind-receiving surface 35 and the curved surface where the wind-driving surface 43 are located in the same radial region are intersected, and the angle θ1 between the wind-receiving surface 35 and the wind-driving surface 43 is less than 90°. Within this angle, the wind-driving surface 43 and the wind-receiving surface 35 can achieve the clamping boosting effect, and when θ1=45°, the boosting effect is best. The angle θ2 between the wind-receiving surface 35 and the central axis of the wind-driving fan blade group 4 satisfies: 30°<θ2<60°, and when the angle θ2 between the wind-receiving surface 35 and the central axis of the wind-driving fan blade group 4 is 45°, the wind flow direction reflected by the wind-receiving surface 35 is most parallel to the central axis of the wind-driving fan blade group 4, which is also the best angle for axial wind outlet efficiency.

[0028] The guide member 2 includes an annular cover 21 and a blade base 22 coaxially arranged with the annular cover 21. The circumferential wall surface of the blade base 22 extends outward to form a guide blade 23. The end of the guide blade 23 away from the blade base 22 is connected to the inner wall of the annular cover 21. The guide blade 23 is arranged parallel to the central axis of the fan blade group 4, and the area where the guide blade 23 is located covers the air outlet 32.

[0029] The blade base 22 is provided with a pressure relief protrusion 24 on the side away from the air outlet 32. The pressure relief protrusion 24 is a hemisphere. When the high-speed wind flow is blown out from the gap between the guide blades 23, a high-pressure vacuum zone will be formed at the blade base 22 surrounded by the guide blades 23. Although the high-pressure vacuum zone is formed by the discharge of high-speed wind flow, it will also generate a back suction force on the high-speed wind flow around it. This back suction force will cause the high-speed wind flow to produce certain turbulence, thereby affecting the wind outlet efficiency and increasing the wind flow noise. Therefore, the provision of the pressure relief protrusion 24 can effectively reduce the existence of the vacuum zone and minimize the adverse effects caused thereby.

[0030] Both ends of the fairing and supercharger hood 1 are open, and the inner diameter of the fairing and supercharger hood 1 radially decreases from the guide member 2 to the side away from the guide member 2. The radially reduced fairing and supercharger hood 1 can further compress the windflow in the radial direction, which can not only increase the speed and pressure, but also eliminate part of the turbulent phenomenon by increasing the circumferential pressure of the wind flow beam, thereby achieving the effect of eliminating turbulence and silencing. In another embodiment, the inner wall of the fairing and supercharger hood 1 can be set to a circular tube shape, the inner diameter of the fairing and supercharger hood 1 is not less than the inner diameter of the guide member 2, and the length of the fairing and supercharger hood 1 is not less than 15 mm. The circular tubular fairing and supercharger hood 1 with a certain length coefficient can also eliminate part of the turbulent phenomenon and achieve the effect of eliminating turbulence and silencing.

[0031] The high-speed boost fan module of the present application can use an external control circuit and a power supply to enable the drive motor 44 to independently perform the blowing operation under the control of the control circuit. It can also be regarded as a functional module. When it is assembled with the fan hardware equipment, it can replace the air duct and drive fan blade group of a conventional fan, thereby converting the conventional fan into a high-speed boost fan.

[0032] To sum up: in the utility model, the wind flow is pressurized and accelerated with the cooperation of the fan blade group 4 and the supercharging mechanism, and then guided by the guide member 2 to concentrate the wind flow, which effectively improves the utilization rate of the wind flow. Finally, it is secondary pressurized through the fairing and supercharging cover 1, and the turbulence is removed before being blown out, which not only greatly improves the wind speed and air supply distance, but also achieves the effect of silent noise reduction.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed boost fan module, comprising an air duct (3) and an air inlet (31) and an air outlet (32) connected to the air duct (3), wherein a fan blade assembly (4) is arranged in the air duct (3), and the fan blade assembly (4) drives the air at the air inlet (31) to flow into the air duct (3) and then blow out from the air outlet (32), characterized in that: A supercharging mechanism is provided at the air outlet (32), and the supercharging mechanism comprises a plurality of wind-cutting supercharging blades (34) provided at the air outlet (32), and the plurality of wind-cutting supercharging blades (34) are arranged at even intervals in the circumferential direction around the air outlet (32) to form an annular supercharging air duct, and the annular supercharging air duct is coaxially arranged with the fan blade group (4), and the fan blade group (4) comprises a rotating seat (41) and wind-driving blades ( 42), a guide member (2) is arranged on the side of the boost mechanism away from the fan blade group (4), a fairing and supercharging cover (1) is arranged on the side of the guide member (2) away from the boost mechanism, the boost mechanism realizes supercharging of the wind flow delivered by the fan blade group (4), the guide member (2) guides the wind flow output from the boost mechanism so that the wind flow is blown out in a direction parallel to the axial direction, and the fairing and supercharging cover (1) supercharges the wind flow output from the guide member (2) and blows it out after removing turbulence.

2. A high-speed boost fan module according to claim 1, characterized in that: The axial projection area of ​​the wind-driving blade (42) is located at the outer part of the projection area where the rotating seat (41) is located and overlaps with the projection area of ​​the annular supercharging air duct.

3. A high-speed boost fan module according to claim 1, characterized in that: The surface of the wind-cutting booster blade (34) facing the outer side of the air outlet (32) is the wind receiving surface (35), and the surface of the wind-driving blade (42) facing the side of the wind-cutting booster blade (34) is the wind-driving surface (43). During the rotation of the wind-driving fan blade assembly (4), the curved surface where the wind receiving surface (35) and the curved surface where the wind-driving surface (43) are located in the same radial area are intersected, and the angle θ1 between the wind receiving surface (35) and the wind-driving surface (43) is less than 90°.

4. A high-speed boost fan module according to claim 3, characterized in that: The angle θ2 between the wind receiving surface (35) and the central axis of the fan blade assembly (4) satisfies: 30°<θ2<60°.

5. A high-speed boost fan module according to claim 3 or 4, characterized in that: The angle θ2 between the wind receiving surface (35) and the central axis of the fan blade assembly (4) is 45°.

6. A high-speed boost fan module according to claim 1, characterized in that: The guide member (2) comprises an annular cover (21) and a blade base (22) coaxially arranged with the annular cover (21); a peripheral wall surface of the blade base (22) extends outward to form a guide blade (23); an end of the guide blade (23) away from the blade base (22) is connected to the inner wall of the annular cover (21); the guide blade (23) is arranged parallel to the central axis of the fan blade group (4); and the area where the guide blade (23) is located covers the air outlet (32).

7. A high-speed boost fan module according to claim 6, characterized in that: A pressure relief protrusion (24) is provided on the side of the blade base (22) away from the air outlet (32).

8. A high-speed boost fan module according to claim 7, characterized in that: The pressure relief protrusion (24) is a hemispherical shape.

9. The high-speed boost fan module according to claim 1, characterized in that: Both ends of the fairing and supercharging cover (1) are open, and the inner diameter of the fairing and supercharging cover (1) radially decreases from the flow guide (2) to a side away from the flow guide (2).

10. The high-speed boost fan module according to claim 1, characterized in that: The inner wall of the fairing and supercharging cover (1) is in the shape of a circular tube, the inner diameter of the fairing and supercharging cover (1) is not less than the inner diameter of the flow guide (2), and the length of the fairing and supercharging cover (1) is not less than 15 mm.

11. The high-speed boost fan module according to claim 1, characterized in that: A motor base (33) is arranged at the axis of the air outlet (32); the fan blade assembly (4) comprises a drive motor (44); the drive motor (44) is mounted on the motor base (33) and is located inside the air duct (3).

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