High-speed wind-gathering pressurizing fan

Abstract

The utility model discloses a high-speed wind gathering booster fan which comprises a shell, an air duct is arranged in the shell, a motor base is arranged at the position of the axis of the air duct, the upper portion of the circumferential wall face of the motor base extends outwards in the radial direction to form a wind guiding blade, and the wind guiding blade comprises a parallel portion and a torsion wind cutting portion. The parallel part is arranged close to one side of the air outlet, the parallel part is parallel to the axis of the air outlet, the torsion air cutting part is arranged close to one side of the air inlet and deviates from the plane where the parallel part is located, and the extending face of the torsion air cutting part intersects with the axial direction of the driving fan blade set. According to the utility model, air flow is blown out after being pressurized and accelerated, turbulent flow is removed and noise is reduced under the common matching action of the driving fan blade group, the air guide blades, the pressurizing surface and the air gathering cover, so that the air speed is greatly increased, the air supply distance is greatly increased, and the air supply efficiency is improved. And meanwhile, the mute and noise reduction effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a high-speed wind-concentrating and pressurizing fan. Background Technology

[0002] When going out or engaging in outdoor activities in the summer, the weather is quite hot, and there may be situations where there is no air conditioning. In order to make it convenient to cool off at any time, portable fans have emerged and are widely popular because they are easy to carry and can be used anytime.

[0003] However, due to its small size, the electrical components it is equipped with can only use low power. Therefore, traditional portable fans cannot be designed to have a large airflow, resulting in poor cooling effect. Although some manufacturers have applied the structure of traditional booster fans to these small portable fans to increase airflow and improve cooling effect, such as Chinese patent (authorization announcement number: CN217029352U), they did not take into account the problem of airflow turbulence, resulting in very loud noise during operation, which seriously affects the user experience and is not conducive to the widespread application of the product. Utility Model Content

[0004] The purpose of this invention is to provide a high-speed wind-gathering and pressurizing fan. Under the combined action of the fan blade assembly, guide vanes, pressurizing surface and wind-gathering shroud, the airflow is pressurized and accelerated, turbulence is eliminated and noise is reduced before being blown outward. This not only greatly increases the wind speed and air delivery distance, but also achieves the effect of quiet operation and noise reduction, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-speed wind-gathering and pressurizing fan, comprising a housing, an air duct inside the housing, a motor base at the axis of the air duct, a drive fan blade assembly mounted on the motor base, an air inlet and an air outlet at both ends of the air duct, the air duct being connected to the air inlet and the air outlet, the drive fan blade assembly guiding air located at the air inlet into the air duct and then blowing it outward from the air outlet, the upper part of the circumferential wall of the motor base radially outward. An air guide blade is formed by extending the fan blade assembly to the side facing the air outlet. The air guide blade includes a parallel part and a twisted cutting part. The parallel part is located near the air outlet and is parallel to the air outlet axis. The twisted cutting part is located near the air inlet and is offset from the plane of the parallel part. Its extension surface intersects the axial direction of the fan blade assembly. An air concentrator is provided at the air outlet. The inner diameter of the air concentrator gradually decreases from the air inlet to the air outlet.

[0006] Preferably, the torsional air-cutting section is a curved surface, the extension surface of which intersects with the axis of the drive fan blade assembly, the inner surface of which is the air-receiving surface, the drive fan blade assembly includes a rotating seat and drive blades evenly arranged on the outer peripheral wall of the rotating seat, the surface of the drive blades facing the air outlet is the drive surface, the air-receiving surface and the curved surface of which the drive surface are located intersect, and the air-receiving surface and the drive surface form an angle of less than 90°.

[0007] Preferably, the angle between the wind-receiving surface and the central axis of the drive fan blade assembly is between 30° and 60°.

[0008] Preferably, the motor base has an electrical cavity on the side facing the air outlet, a display screen is installed inside the electrical cavity, and a light-transmitting cover is provided on the outside of the display screen.

[0009] Preferably, the light-transmitting cover and the wind-gathering cover are coaxially arranged, and the surface of the light-transmitting cover away from the display screen protrudes outward to form a curved surface.

[0010] Preferably, the outer peripheral wall of the motor base includes a pressure-boosting surface that at least partially increases radially from the air inlet to the air outlet.

[0011] Preferably, the lower end portion of the outer shell extends downward to form a handle front shell, and a handle rear shell is installed on the rear side of the handle front shell. A cavity is formed between the handle front shell and the handle rear shell, and a circuit board assembly and a battery are installed in the cavity. The battery is electrically connected to the circuit board assembly.

[0012] Preferably, the circuit board assembly is electrically connected to a control button and a USB interface. The control button is located in a pre-set through hole in the front shell of the handle and is connected to the button panel. The USB interface is located in a pre-set through hole in the rear shell of the handle and extends outward from the through hole.

[0013] Preferably, the air inlet is covered with an air inlet cover, which is a perforated cover.

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

[0015] In this invention, the airflow is pressurized and accelerated, turbulence is eliminated, and noise is reduced through the combined action of the drive fan blade assembly, guide vanes, pressurizing surface, and wind-gathering shroud before being blown outward. This not only significantly increases the wind speed and delivery distance but also achieves the effect of quiet operation and noise reduction. Attached Figure Description

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

[0017] Figure 2 This is a perspective view of the appearance of this utility model;

[0018] Figure 3 This is a schematic diagram of the outer shell structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional orientation of the outer shell AA of this utility model;

[0020] Figure 5 This is a cross-sectional view of the outer shell AA of this utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional orientation of the wind-gathering cover BB of this utility model;

[0022] Figure 7 This is a cross-sectional view of the wind-concentrating cover BB of this utility model.

[0023] In the diagram: 1. Wind concentrator; 2. Light-transmitting cover; 3. Display screen; 4. Housing; 41. Motor base; 42. Air guide vanes; 421. Parallel section; 422. Twisting air-cutting section; 423. Air receiving surface; 43. Electrical cavity; 44. Pressure boosting surface; 45. Handle front cover; 5. Drive fan blade assembly; 51. Air driving surface; 6. Air inlet cover; 7. Circuit board assembly; 71. Control buttons; 72. USB interface; 8. Battery; 9. Handle rear cover. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7A high-speed wind-gathering and pressurizing fan includes a housing 4, inside which an air duct is provided. A motor base 41 is provided at the axis of the air duct, and a drive fan blade assembly 5 is mounted on the motor base 41. An air inlet and an air outlet are respectively provided at both ends of the air duct, and the air duct is connected to the air inlet and the air outlet. The drive fan blade assembly 5 guides the air located at the air inlet into the air duct and blows it outward from the air outlet. A portion of the circumferential wall of the motor base 41 extends radially outward to form a guide vane 42. The guide vane 42 is located on the side of the drive fan blade assembly 5 facing the air outlet. The guide vane 42 includes a parallel portion 421 and a torsional air-cutting portion 422. The parallel portion 421 is close to the air outlet. The parallel part 421 is set on one side and is parallel to the air outlet axis. It is used to adjust the airflow input from the twisting air cutting part to blow outward in a direction as parallel as possible to the air outlet axis. This helps to increase the blowing distance of the airflow and thus improve the effective utilization rate of the airflow. The twisting air cutting part 422 is set on the side close to the air inlet. The twisting air cutting part 422 is set off from the plane where the parallel part 421 is located. Its extension surface intersects the axis of the drive fan blade assembly 5. The air outlet is covered with a wind concentrator 1. The inner diameter of the wind concentrator 1 gradually decreases from the air inlet to the air outlet. The wind concentrator 1 not only has the effect of concentrating and pressurizing the air, but also can reduce turbulence and noise by compressing the air jet.

[0026] The torsional air-cutting section 422 is a curved surface, and the extension surface of the curved surface intersects with the axis of the drive fan blade assembly 5. The inner surface of the curved surface is the air-receiving surface 423. The drive fan blade assembly 5 includes a rotating seat and drive blades evenly arranged on the outer peripheral wall of the rotating seat. The surface of the drive blade facing the air outlet is the drive surface 51. The air-receiving surface 423 intersects with the curved surface of the drive surface 51, and the air-receiving surface 423 and the drive surface 51 form an angle of less than 90°. The air-receiving surface 423 and the drive surface 51 form an acute angle facing each other, which can achieve the effect of airflow pressurization. When the angle between the air-receiving surface 423 and the central axis of the drive fan blade assembly 5 is between 30° and 60°, the comprehensive parameter test is optimal.

[0027] The motor base 41 has an electrical cavity 43 on the side facing the air outlet. A display screen 3 is installed inside the electrical cavity 43. A light-transmitting cover 2 is installed on the outside of the display screen 3. The display screen 3 is used to display the working mode of the fan and the remaining power of the battery 8.

[0028] The light-transmitting cover 2 and the wind-gathering cover 1 are coaxially arranged. The surface of the light-transmitting cover 2 away from the display screen 3 protrudes outward to form a curved surface. This curved surface structure can help reduce the air pressure effect formed by the airflow in the area occupied by the light-transmitting cover at the air outlet, thereby minimizing the occurrence of airflow backflow and helping to reduce airflow noise.

[0029] The outer peripheral wall of the motor base 41 includes a pressure-boosting surface 44 that at least partially increases radially from the air inlet to the air outlet.

[0030] The lower part of the outer casing 4 extends downward to form a handle front casing 45. A handle rear casing 9 is attached to the rear side of the handle front casing 45. A cavity is formed between the handle front casing 45 and the handle rear casing 9. A circuit board assembly 7 and a battery 8 are installed in the cavity. The battery 8 is electrically connected to the circuit board assembly 7. The circuit board assembly 7 is electrically connected to a control button 71 and a USB interface 72. The control button 71 is located in a pre-set through hole in the handle front casing 45 and is connected to a button panel. The USB interface 72 is located in a pre-set through hole in the handle rear casing 9 and extends outward from the through hole. The control button 71 is used to adjust the working mode and working status of the fan blade assembly 5. When the USB interface 72 is connected to an external power source using a charging cable, it can charge the battery 8 to replenish its power.

[0031] The air inlet is covered with an air inlet cover 6, which is a perforated cover.

[0032] In summary, this utility model achieves pressurization and acceleration, turbulence elimination, and noise reduction in the airflow through the combined action of the drive fan blade assembly 5, the guide vane 42, the pressurizing surface 44, and the wind-gathering cover 1 before blowing it outward. This not only significantly increases the wind speed and air delivery distance but also achieves the effect of quiet operation and noise reduction.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A high-speed wind-gathering and pressurizing fan, comprising a housing (4), wherein an air duct is provided inside the housing (4), a motor base (41) is provided at the axis of the air duct, a drive fan blade assembly (5) is mounted on the motor base (41), an air inlet and an air outlet are respectively provided at both ends of the air duct, the air duct is connected to the air inlet and the air outlet, the drive fan blade assembly (5) guides the air located at the air inlet into the air duct and blows it outward from the air outlet, and a portion of the circumferential wall surface of the motor base (41) extends radially outward to form guide vanes (42), characterized in that: The guide vane (42) is located on the side of the drive fan blade assembly (5) facing the air outlet. The guide vane (42) includes a parallel part (421) and a twisted cutting part (422). The parallel part (421) is located near the air outlet and is parallel to the air outlet axis. The twisted cutting part (422) is located near the air inlet and is offset from the plane of the parallel part (421). Its extension surface intersects the axis of the drive fan blade assembly (5). A wind-gathering hood (1) is provided at the air outlet. The inner diameter of the wind-gathering hood (1) gradually decreases from the air inlet to the air outlet.

2. The high-speed wind-concentrating and pressurizing fan according to claim 1, characterized in that: The twisted wind-cutting part (422) is a curved surface, and the extended surface of the curved surface intersects with the axis of the drive fan blade assembly (5). The inner surface of the curved surface is the wind-receiving surface (423). The drive fan blade assembly (5) includes a rotating seat and wind-driving blades evenly arranged on the outer peripheral wall of the rotating seat. The surface of the wind-driving blade facing the air outlet is the wind-driving surface (51). The wind-receiving surface (423) and the curved surface of the wind-driving surface (51) are intersected and an angle of less than 90° is formed between the wind-receiving surface (423) and the wind-driving surface (51).

3. A high-speed wind-concentrating and pressurizing fan according to claim 2, characterized in that: The angle between the wind-receiving surface (423) and the central axis of the drive fan blade assembly (5) is between 30° and 60°.

4. A high-speed wind-concentrating and pressurizing fan according to claim 1, characterized in that: The motor base (41) has an electrical cavity (43) on the side facing the air outlet. A display screen (3) is installed inside the electrical cavity (43), and a light-transmitting cover (2) is provided on the outside of the display screen (3).

5. A high-speed wind-concentrating and pressurizing fan according to claim 4, characterized in that: The light-transmitting cover (2) is coaxially arranged with the wind-gathering cover (1), and the surface of the light-transmitting cover (2) away from the display screen (3) protrudes outward to form a curved surface.

6. A high-speed wind-concentrating and pressurizing fan according to claim 1, characterized in that: The outer peripheral wall of the motor base (41) includes a pressure-boosting surface (44) that at least partially increases radially from the air inlet to the air outlet.

7. A high-speed wind-concentrating and pressurizing fan according to claim 1, characterized in that: The lower part of the outer shell (4) extends downward to form a handle front shell (45). A handle rear shell (9) is installed on the rear side of the handle front shell (45). A cavity is formed between the handle front shell (45) and the handle rear shell (9). A circuit board assembly (7) and a battery (8) are installed in the cavity. The battery (8) is electrically connected to the circuit board assembly (7).

8. A high-speed wind-concentrating and pressurizing fan according to claim 7, characterized in that: The circuit board assembly (7) is electrically connected to a control button (71) and a USB interface (72). The control button (71) is located in a pre-set through hole in the front shell (45) of the handle and is connected to the button panel. The USB interface (72) is located in a pre-set through hole in the rear shell (9) of the handle and extends outward from the through hole.

9. A high-speed wind-concentrating and pressurizing fan according to claim 1, characterized in that: An air inlet cover (6) is provided at the air inlet, and the air inlet cover (6) is a hollow cover.

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