High-speed air supply device

Abstract

A high-speed air supply device comprises a shell, an air duct is formed in the shell, an air inlet and an air outlet are formed in the two ends of the air duct respectively, a fan blade driving set is arranged in the air duct, a base is coaxially arranged in the air duct, and the circumferential part wall face of the base extends towards the inner wall of the air duct to form pressurizing blades. The air driving blade group comprises a rotating seat and air driving blades which are uniformly arranged on the peripheral wall surface of the rotating seat, and guide blades are arranged on one sides, far away from the air driving blade group, of the pressurizing blades. The utilization rate of the air flow is effectively improved, turbulent flow in the air flow is effectively reduced after the air flow is collected and arranged, 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 air supply device. 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 air supply device, in which the wind flow is pressurized and accelerated with the cooperation of wind drive blades and boost blades, and then the wind flow is concentrated and gathered by the guidance of guide blades, thereby effectively improving the utilization rate of the wind flow. After the wind flow is gathered and regularized, the turbulence in the wind flow is also effectively reduced, 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 air supply device, comprising a shell, a duct is formed in the shell, and two ends of the duct are respectively set as an air inlet and an air outlet, and a drive fan blade group is arranged in the duct, and the drive fan blade group drives the air located at the air inlet to flow into the duct and then blown out from the air outlet, a base is coaxially arranged in the duct, and the circumferential wall surface of the base extends toward the inner wall of the duct to form booster blades, and the booster blades are arranged on the side of the drive fan blade group facing the air outlet, the drive fan blade group includes a rotating seat and drive blades evenly arranged on the outer circumferential wall surface of the rotating seat, and the booster blades are provided with guide blades on the side of the booster blades away from the drive fan blade group, the booster blades realize cutting and pressurizing of the airflow transported by the drive blades, and the guide blades guide the boosted airflow output from the booster blades so that the boosted airflow is blown out in a direction parallel to the axial direction of the air outlet.

[0006] Preferably, the surface of the boost blade facing the outside of the air outlet is the wind receiving surface, and the surface of the wind driving blade facing the boost blade side is the wind driving surface. During the rotation of the wind driving fan blade assembly, the wind driving surface rotates toward the wind receiving surface, and the curved surface where the wind receiving surface and the curved surface where the wind driving surface are located in the same radial area are intersected, and the angle θ1 between the wind receiving surface and the wind driving surface is <90°.

[0007] Preferably, the angle θ2 between the wind receiving surface and the central axis of the fan blade assembly satisfies: 30°<θ2<60°.

[0008] Preferably, the angle θ2 between the wind receiving surface and the central axis of the fan blade assembly is 45°.

[0009] Preferably, the guide vane is formed by extending from a connection node located at the central axis of the air outlet toward one side of the inner wall of the air duct, and the guide vane is arranged parallel to the central axis of the air outlet.

[0010] Preferably, the guide blade is arc-shaped, and the width of the guide blade along the central axis of the air outlet is not less than 2 mm.

[0011] Preferably, the shell includes an upper shell and a bottom shell, and the upper shell and the bottom shell are respectively covered on the upper and lower ends of the shell, the guide blades are integrally formed with the upper shell, and the fan blade group is installed on the base through a driving motor. A battery and a circuit board assembly are arranged in the shell, and the driving motor and the battery are electrically connected to the circuit board assembly.

[0012] Preferably, a front side clamp and a rear side clamp are respectively installed on the outer wall surfaces on two opposite sides of the shell, and the clamping openings of the front side clamp and the rear side clamp are arranged in opposite directions.

[0013] Preferably, the circuit board assembly is electrically connected to the Type-C interface, the Type-A interface, the speed control switch and the digital display screen. The Type-C interface, the Type-A interface and the speed control switch are all arranged in a preset through hole of the shell and extend outward from the through hole. A transparent panel is encapsulated on the outside of the digital display screen.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can increase the pressure and speed of the wind with the cooperation of the wind-driving blades and the boosting blades, and then guide the wind to be concentrated and gathered by the guide blades, which effectively improves the utilization rate of the wind. The turbulence in the wind is also effectively reduced after the wind is gathered and regularized, 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

[0016] Figure 1 This is an exploded view of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 It is a cross-sectional orientation schematic diagram of the utility model;

[0019] Figure 4 This is the AA section view of the utility model;

[0020] Figure 5 This is a schematic diagram of the shell structure of the utility model.

[0021] In the figure: 1 perspective panel; 2 upper shell; 21 guide vane; 3 circuit board assembly; 31 Type-C interface; 32 Type-A interface; 33 speed control switch; 34 digital display screen; 4 rear side clip; 5 shell; 51 air duct; 52 air inlet; 53 air outlet; 54 base; 55 boost blade; 6 front side clip; 7 drive motor; 8 drive fan blade group; 81 rotating seat; 82 drive blade; 9 battery; 10 bottom shell. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5A high-speed air supply device includes a shell 5, an air duct 51 is formed in the shell 5, and the two ends of the air duct 51 are respectively set as an air inlet 52 and an air outlet 53. A drive fan blade group 8 is arranged in the air duct 51, and the drive fan blade group 8 drives the air located at the air inlet 52 to flow into the air duct 51 and then blow out from the air outlet 53. A base 54 is coaxially arranged in the air duct 51, and the circumferential wall surface of the base 54 extends toward the inner wall of the air duct to form a booster blade 55. The booster blade 55 is arranged on the side of the drive fan blade group 8 facing the air outlet 53. The drive fan blade group 8 includes a rotating seat 81 and drive blades evenly arranged on the outer circumferential wall surface of the rotating seat 81. The wind blade 82, the boost blade 55 is provided with a guide blade 21 on the side away from the fan blade group 8, the guide blade 21 is formed by extending from the connection node located at the central axis of the air outlet 53 toward the inner wall of the air duct, the guide blade 21 is arranged parallel to the central axis of the air outlet 53, the guide blade 21 is arc-shaped, and the width of the guide blade 21 along the central axis of the air outlet 53 is not less than 2mm, the boost blade 55 realizes the cutting and pressurizing of the airflow delivered by the wind driving blade 82, and the guide blade 21 guides the pressurized airflow output from the boost blade 55, so that the pressurized airflow is blown out in a direction parallel to the axial direction of the air outlet 53.

[0024] The surface of the boost blade 55 facing the outside of the air outlet is the wind receiving surface, and the surface of the wind driving blade 82 facing the side of the boost blade 55 is the wind driving surface. During the rotation of the wind driving fan blade group 8, the wind driving surface rotates toward the wind receiving surface, and the curved surface where the wind receiving surface and the curved surface where the wind driving surface are located in the same radial area are intersected, and the angle θ1 between the wind receiving surface and the wind driving surface is <90°, and the angle θ2 between the wind receiving surface and the central axis of the wind driving fan blade group 8 satisfies: 30°<θ2<60°. When the angle θ2 between the wind receiving surface and the central axis of the wind driving fan blade group 8 is 45°, the wind cutting and pressurization effect is best.

[0025] The shell 5 includes an upper shell 2 and a bottom shell 10, and the upper shell 2 and the bottom shell 10 are respectively covered at the upper and lower ends of the shell 5. The guide blade 21 is integrally formed with the upper shell 2. The fan blade group 8 is installed on the base 54 through the drive motor 7. A battery 9 and a circuit board assembly 3 are arranged in the shell 5. The drive motor 7 and the battery 9 are electrically connected to the circuit board assembly 3. The circuit board assembly 3 is electrically connected to the Type-C interface 31, the Type-A interface 32, the speed control switch 33 and the digital display screen 34. The Type-C interface 31, the Type-A interface 32, the speed control switch 33 and the digital display screen 34 The switches 33 are all arranged in the preset through holes of the shell and extend outward from the through holes. The perspective panel 1 is encapsulated on the outside of the digital display screen 34. When the Type-C interface 31 is connected to the external power supply using a data cable, the battery 9 can be charged to supplement the electric energy. When the Type-A interface 32 is connected to the mobile terminal using a data cable, the electric energy stored in the battery 9 can be used to charge the mobile terminal. The speed control switch 33 can control the start and stop of the drive motor 7 and adjust the working speed of the drive motor 7. The digital display screen 34 can be used to display the real-time value of the battery 9 power and the working gear of the drive motor 7.

[0026] The front side clip 6 and the rear side clip 4 are respectively installed on the outer wall surfaces on both sides of the shell 5. The clamping openings of the front side clip 6 and the rear side clip 4 are arranged in opposite directions. The front side clip 6 and the rear side clip 4 can be used to clamp the air supply device on the belt. The front side clip 6 and the rear side clip 4 arranged in opposite directions can adapt to the blowing needs in different directions up and down.

[0027] To sum up: In the utility model, the wind flow is pressurized and accelerated with the cooperation of the wind-driving blades 82 and the boost blades 55, and then guided by the guide blades 21 to concentrate the wind flow, which effectively improves the utilization rate of the wind flow. The turbulence in the wind flow is also effectively reduced after the wind flow is gathered and regularized, which not only greatly improves the wind speed and air supply distance, but also achieves the effect of silent noise reduction.

[0028] 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.

[0029] 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 air supply device, comprising a housing (5), wherein an air duct (51) is formed in the housing (5), wherein two ends of the air duct (51) are respectively arranged as an air inlet (52) and an air outlet (53), wherein a fan blade group (8) is arranged in the air duct (51), wherein the fan blade group (8) drives air at the air inlet (52) to flow into the air duct (51) and then blow out from the air outlet (53), wherein the device is characterized in that: A base (54) is coaxially arranged in the air duct (51), and a circumferential wall surface of the base (54) extends toward the inner wall of the air duct to form a booster blade (55). The booster blade (55) is arranged on the side of the fan blade group (8) facing the air outlet (53). The fan blade group (8) includes a rotating seat (81) and wind-driving blades (82) evenly arranged on the outer peripheral wall surface of the rotating seat (81). The booster blade (55) is provided with a guide blade (21) on the side away from the fan blade group (8). The booster blade (55) realizes wind cutting and pressurizing of the airflow transported by the wind-driving blade (82), and the guide blade (21) guides the boosted airflow output from the booster blade (55) so that the boosted airflow is blown out in an axial direction parallel to the air outlet (53).

2. A high-speed air supply device according to claim 1, characterized in that: The surface of the booster blade (55) facing the outer side of the air outlet is the wind receiving surface, and the surface of the wind driving blade (82) facing the side of the booster blade (55) is the wind driving surface. During the rotation of the wind driving fan blade assembly (8), the wind driving surface rotates toward the wind receiving surface, and the curved surface where the wind receiving surface and the curved surface where the wind driving surface are located in the same radial area are intersected, and the angle θ1 between the wind receiving surface and the wind driving surface is less than 90°.

3. A high-speed air supply device according to claim 2, characterized in that: The angle θ2 between the wind receiving surface and the central axis of the fan blade assembly (8) satisfies: 30°<θ2<60°.

4. A high-speed air supply device according to claim 2 or 3, characterized in that: The angle θ2 between the wind receiving surface and the central axis of the fan blade assembly (8) is 45°.

5. The high-speed air supply device according to claim 1, characterized in that: The guide blade (21) is formed by extending from a connection node located at the central axis of the air outlet (53) toward one side of the inner wall of the air duct, and the guide blade (21) is arranged parallel to the central axis of the air outlet (53).

6. A high-speed air supply device according to claim 5, characterized in that: The guide blade (21) is arc-shaped, and the width of the guide blade (21) along the central axis direction of the air outlet (53) is not less than 2 mm.

7. A high-speed air supply device according to claim 1, characterized in that: The shell (5) comprises an upper shell (2) and a bottom shell (10), wherein the upper shell (2) and the bottom shell (10) are respectively covered at the upper and lower ends of the shell (5), the guide blades (21) are integrally formed with the upper shell (2), the fan blade group (8) is installed on the base (54) through a drive motor (7), and a storage battery (9) and a circuit board assembly (3) are arranged in the shell (5), and the drive motor (7) and the storage battery (9) are both electrically connected to the circuit board assembly (3).

8. A high-speed air supply device according to claim 1 or 7, characterized in that: A front side clamp (6) and a rear side clamp (4) are respectively installed on the outer wall surfaces on opposite sides of the shell (5), and the clamping openings of the front side clamp (6) and the rear side clamp (4) are arranged in opposite directions.

9. A high-speed air supply device according to claim 7, characterized in that: The circuit board assembly (3) is electrically connected to a Type-C interface (31), a Type-A interface (32), a speed regulating switch (33) and a digital display screen (34); the Type-C interface (31), the Type-A interface (32) and the speed regulating switch (33) are all arranged in through holes preset in the housing and extend outward from the through holes; and a perspective panel (1) is encapsulated on the outside of the digital display screen (34).

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