High-speed air-collecting handheld fan

Abstract

To provide a high-speed, air-collecting handheld fan including an air duct housing. [Solution] An air duct is provided inside an air duct housing (4), a motor base is provided on the axis of the air duct, and a portion of the peripheral wall of the motor base extends radially outward to form air guide vanes (42), the air guide vanes including a parallel section and an inclined section, the parallel section being located close to the exhaust port side and parallel to the axis of the exhaust port, the inclined section being located close to the air inlet side, the inclined section being positioned off-plane with the parallel section and its extending surface intersecting the axial direction of a group of wind-driven vanes (5), and a wind collecting cover (1) is provided to cover the exhaust port. According to this device, the wind drive vanes, the air guide vanes, the pressure boosting surface and the wind collecting cover work together to accelerate pressure boost, remove turbulence and reduce noise, before being blown out.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electric fans, and more particularly to a high-speed, air-collecting handheld fan. [Background technology]

[0002] When you go out or do outdoor activities on a summer day, not only is the temperature high, but there are also situations where you don't have air conditioning. Portable fans have been invented to help you stay cool at all times. They are gaining popularity because they are easy to carry and can be used anytime.

[0003] However, due to their small size, the electrical components used in them consume little power. As a result, existing portable fans cannot be set to a high wind speed, resulting in poor airflow and cooling effects. Meanwhile, some manufacturers have attempted to improve the cooling effect by incorporating a conventional booster fan structure into such small portable fans, such as the Chinese patent with the authorization publication number CN217029352U. However, because the problem of turbulence in the wind is not taken into consideration, the noise generated during operation is very loud, significantly impairing the consumer experience, and thus hindering the widespread use of the product. Summary of the Invention [Problem to be solved by the invention]

[0004] The purpose of this invention is to provide a high-speed, air-collecting handheld fan. The airflow is accelerated by the combined action of the wind-driven blades, air guide blades, pressure-boosting surface, and air-collecting cover, and is then blown out to the outside. This significantly increases the wind speed and blowing distance, while also achieving the effect of noise reduction and quietness, thereby solving the problems of the background art mentioned above. [Means for solving the problem]

[0005] To achieve the above object, the present invention provides the following technical solution: A high-speed, air-collecting handheld fan includes an air duct housing, an air duct is provided inside the air duct housing, a motor base is provided on the axis of the air duct, a group of wind-driven blades is attached to the motor base, an air inlet and an exhaust port are provided at both ends of the air duct, the air duct is provided in communication with the air inlet and the exhaust port, the group of wind-driven blades guides air located at the air inlet to flow into the air duct and then blows it out through the exhaust port, a portion of the peripheral wall surface of the motor base extends radially outward to form a wind guide blade, the wind guide blade is located on the side of the group of wind-driven blades facing the exhaust port, the wind guide blade includes a parallel portion and an inclined airflow portion, and a front The parallel portion is provided close to the exhaust port side and is arranged so as to be parallel to the axis of the exhaust port, the inclined air-cutting portion is provided close to the air intake port side and is arranged so as to be deviated from the plane on which the parallel portion is located and so as its extending surface to intersect with the axial direction of the wind-driven blade group, a part of the main body at the lower end of the air duct housing extends downward to form a handle front shell, a handle rear shell is placed on the rear side of the handle front shell, an accommodation chamber is formed between the handle front shell and the handle rear shell, a circuit board component and a secondary battery are attached in the accommodation chamber, and the secondary battery is electrically connected to the circuit board component.

[0006] Preferably, the inclined airfoil portion is a curved surface, the extension surface of the curved surface where it is located intersects with the axis of the wind drive blade group, the inner surface of the curved surface is the wind-receiving surface, the wind drive blade group includes a rotating seat and wind drive blades evenly arranged on the outer peripheral wall surface of the rotating seat, the surface of the wind drive blade facing the exhaust port side is the wind-receiving surface, the wind-receiving surface is arranged so as to intersect with the curved surface where the wind-drive surface is located, and the wind-receiving surface and the wind-drive surface form an angle of less than 90°.

[0007] Preferably, the angle of the wind-receiving surface with respect to the central axis of the wind-driven blade group is 30° to 60°.

[0008] Preferably, an electric component chamber is provided on the side of the motor base facing the exhaust port, the electric component chamber can be used to mount a functional module, and a package cover is placed over the opening of the electric component chamber.

[0009] Preferably, a display screen is electrically connected to the circuit board component, the display screen is installed in a pre-installed through-hole in the steering wheel front shell, and a translucent cover is placed over the outside of the through-hole, so that the display content of the display screen is displayed to the outside through the translucent cover.

[0010] Preferably, an outer peripheral wall surface of the motor base includes a pressure increasing surface that increases in at least a portion of the radial direction from the air inlet to the air outlet.

[0011] Preferably, a wind collecting cover is provided to cover the exhaust port, and the inner diameter of the wind collecting cover gradually decreases from the air inlet toward the exhaust port.

[0012] Preferably, the control key and the USB interface are electrically connected to each other on the circuit board component, the control key is provided in a pre-installed through-hole in the handle front shell and connected to a key panel, and the USB interface is provided in a pre-installed through-hole in the handle rear shell and extends to the outside from the through-hole.

[0013] Preferably, an air intake cover is provided to cover the air intake port, and the air intake cover is a hollow cover. [Effects of the Invention]

[0014] Compared with the prior art, the present invention has the following beneficial effects: According to this invention, the airflow is accelerated by the combined action of the wind-driven blades, the air guide blades, the pressure-boosting surface and the air-collecting cover, and then blown out to the outside, greatly increasing the wind speed and blowing distance while also achieving the effect of noise reduction and silencing. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is an exploded view of the structure of the present invention. [Figure 2] 1 is a structural diagram of an air duct housing according to the present invention; [Figure 3] 2 is a schematic diagram of the AA cross section of the wind collecting cover of the present invention. [Figure 4] FIG. 2 is a cross-sectional view of the wind collecting cover taken along line AA of the present invention. [Figure 5] 1 is a perspective view of the appearance of the present invention; [Figure 6] FIG. 1 is a schematic diagram of the cross section of the present invention taken along the line BB. [Figure 7] FIG. BB cross-sectional view of the present invention. [Explanation of symbols]

[0016] 1 Wind collecting cover 2 Package Cover 3 Display Screen 4 Air Duct Housing 41 Motor base 42 Wind guide vane 421 Parallel section 422 Inclined wind section 423 Wind surface 43 Electrical Components Chamber 44 Pressure booster surface 45 Handlebar front shell 5 Wind-driven blades 51 Wind-driven surface 6 Air intake cover 7 Circuit Board Components 71 control keys 72 USB interface 8 Secondary battery 9 Handlebar rear shell DETAILED DESCRIPTION OF THE INVENTION

[0017] The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings of the embodiments of the present invention. It goes without saying that the described embodiments are only some of the embodiments of the present invention, not all of them. Any other embodiments that a person skilled in the art can obtain from the implementation of the present invention without any inventive work are all within the scope of protection of the present invention.

[0018] 1 to 7, a high-speed air-collecting handheld fan includes an air duct housing 4, an air duct is provided inside the air duct housing 4, a motor base 41 is provided on the axis of the air duct, a wind-driven blade group 5 is attached to the motor base 41, an air inlet and an exhaust port are provided at both ends of the air duct, the air duct is provided in communication with the air inlet and the exhaust port, the wind-driven blade group 5 guides air located at the air inlet to flow into the air duct and then blows it out from the exhaust port, and the motor base 41 A portion of the peripheral wall surface extends radially outward to form air guide vanes 42, and the air guide vanes 42 are located on the side of the wind-driven vane group 5 facing the exhaust port, and the air guide vanes 42 include a parallel portion 421 and an inclined air-cutting portion 422, and the parallel portion 421 is provided close to the exhaust port side and is provided so as to be parallel to the axis of the exhaust port, and is used to adjust the air flow that has entered from the inclined air-cutting portion to a direction as parallel as possible to the axis of the exhaust port and blow it out to the outside, thereby increasing the blowing distance of the air flow and helping to improve the effective utilization rate of the air flow. the inclined airflow section 422 is disposed close to the air intake side, the inclined airflow section 422 is disposed so as to be offset from the plane on which the parallel section 421 is located, and its extending surface is disposed so as to intersect with the axial direction of the wind-driven blade group 5; a part of the main body at the lower end of the air duct housing 4 extends downward to form a handle front shell 45; a handle rear shell 9 is placed on the rear side of the handle front shell 45; an accommodating chamber is formed between the handle front shell 45 and the handle rear shell 9; a circuit board component 7 and a secondary battery 8 are mounted in the accommodating chamber; the secondary battery 8 is electrically connected to the circuit board component 7; a wind collecting cover 1 is disposed over the exhaust port; the inner diameter of the wind collecting cover 1 gradually decreases from the air intake port toward the exhaust port; the provision of the wind collecting cover 1 not only achieves the effect of increasing pressure by collecting wind, but also achieves the effects of eliminating turbulence and reducing noise by compressing the wind flow.

[0019] The inclined airfoil portion 422 is a curved surface, and the extension surface of the curved surface where it is located intersects with the axis of the wind-driven blade group 5, and the inner surface of the curved surface is the wind-receiving surface 423, the wind-driven blade group 5 includes a rotating seat and wind-driven blades evenly arranged on the outer wall surface of the rotating seat, and the surface of the wind-driven blade facing the exhaust port is the wind-driven surface 51, and the wind-receiving surface 423 is arranged to intersect with the curved surface where the wind-driven surface 51 is located, and the wind-receiving surface 423 and the wind-driven surface 51 form an angle of less than 90°. The wind-receiving surface 423 and the wind-driven surface 51 facing each other at an acute angle can have the effect of increasing the pressure of the wind flow, and when the angle of the wind-receiving surface 423 with respect to the central axis of the wind-driven blade group 5 is 30° to 60°, the comprehensive parameter test results are best.

[0020] An electric component chamber 43 is provided on the side of the motor base 41 facing the exhaust port, and the electric component chamber 43 can be used to mount a functional module. A package cover 2 is placed over the opening of the electric component chamber 43, for example, to mount a semiconductor cooling module to achieve cooling and maintenance functions. When this technical solution is adopted, an aluminum alloy cover with heat conduction function is used instead of the package cover 2.

[0021] The motor base 41 has an outer peripheral wall surface including a pressure increasing surface 44 that increases in at least a portion of the radial direction from the air inlet to the air outlet.

[0022] a control key 71 that is provided in a through-hole provided in the handle front shell 45 and connected to a key panel; a USB interface 72 that is provided in a through-hole provided in the handle rear shell 9 and extends outward from the through-hole; the control key 71 is used to adjust the operating model and operating state of the wind-driven blades 5; and when an external power source is connected to the USB interface 72 using a charging cable, the secondary battery 8 can be charged to replenish its power.

[0023] An air intake cover 6 is provided to cover the air intake port, and the air intake cover 6 is a hollow cover.

[0024] As can be seen from the above, according to the present invention, the airflow is accelerated by the wind-driven blade group 5, the air guide blades 42, the pressure-increasing surface 44 and the air-collecting cover 1 working together to achieve pressure increase acceleration, turbulence elimination and noise reduction before being blown out to the outside, thereby significantly increasing the wind speed and blowing distance and achieving the effect of silencing by noise reduction.

[0025] It should be understood that, as used herein, relational terms such as "first," "second," etc., are merely used to distinguish one entity or operation from another and do not necessarily require or imply that any such relationship or ordering actually exists between those entities or operations. Furthermore, the term "comprises," or any variation thereof, is intended to cover an inclusive, non-exclusive inclusion, whereby a process, method, article, or apparatus comprising a series of elements not only includes the recited elements, but also includes other elements not expressly recited or inherent in such process, method, article, or apparatus.

[0026] While 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, or variations can be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited only by the following claims and their equivalents.

Claims

1. a motor base (41) provided on the axis of the air duct; a group of wind-driven blades (5) attached to the motor base (41); an air intake port and an exhaust port provided at both ends of the air duct; the air duct being provided in communication with the air intake port and the exhaust port; the group of wind-driven blades (5) guiding air located at the air intake port to flow into the air duct and then blowing the air outward from the exhaust port; and a portion of the peripheral wall surface of the motor base (41) extending radially outward to form air guide blades (42), The air guide vanes (42) are located on the side of the wind-driven vane group (5) facing the exhaust port, and the air guide vanes (42) include a parallel portion (421) and an inclined airflow portion (422), the parallel portion (421) is provided close to the exhaust port side, the parallel portion (421) is provided so as to be parallel to the axis of the exhaust port, the inclined airflow portion (422) is provided close to the air intake port side, the inclined airflow portion (422) is provided so as to be deviated from the plane on which the parallel portion (421) is located, and the extending surface thereof is provided so as to intersect with the axial direction of the wind-driven vane group (5). a part of the main body at the lower end of the air duct housing (4) extends downward to form a handle front shell (45); a handle rear shell (9) is placed on the rear side of the handle front shell (45); an accommodating chamber is formed between the handle front shell (45) and the handle rear shell (9); a circuit board component (7) and a secondary battery (8) are mounted in the accommodating chamber; and the secondary battery (8) is electrically connected to the circuit board component (7). A high-speed, air-collecting handheld fan.

2. The high-speed, air-collecting handheld fan according to claim 1, characterized in that the inclined airflow section (422) is a curved surface, the extension surface of the curved surface where it is located intersects with the axis of the wind-driven blade group (5), the inner surface of the curved surface is a wind-receiving surface (423), the wind-driven blade group (5) includes a rotating seat and wind-driven blades evenly arranged on the outer peripheral wall surface of the rotating seat, the surface of the wind-driven blade facing the exhaust port is a wind-driving surface (51), the wind-receiving surface (423) is arranged to intersect with the curved surface where the wind-driving surface (51) is located, and the wind-receiving surface (423) and the wind-driving surface (51) form an angle of less than 90°.

3. The high-speed, wind-collecting handheld fan according to claim 2, wherein the angle of the wind-receiving surface (423) relative to the central axis of the wind-driven blade set (5) is 30° to 60°.

4. 2. The high-speed, air-collecting handheld fan according to claim 1, wherein an electric component chamber (43) is provided on the side of the motor base (41) facing the exhaust port, the electric component chamber (43) can be used to mount a functional module, and a package cover (2) is placed over the opening of the electric component chamber (43).

5. The high-speed air-collecting handheld fan according to claim 4, characterized in that a display screen (3) is electrically connected to the circuit board component (7), the display screen (3) is installed in a pre-installed through-hole in the handle front shell (45), and a translucent cover is placed on the outside of the through-hole, so that the display content of the display screen (3) can be displayed to the outside through the translucent cover.

6. 2. The high-speed, air-collecting handheld fan according to claim 1, wherein the outer peripheral wall surface of the motor base includes a pressure increasing surface that increases in at least a portion of the radial direction from the air inlet to the air outlet.

7. 2. The high-speed air-collecting handheld fan according to claim 1, wherein an air-collecting cover (1) is provided to cover the exhaust port, and the inner diameter of the air-collecting cover (1) gradually decreases from the air inlet toward the exhaust port.

8. 2. The high-speed air-collecting handheld fan according to claim 1, wherein the control keys (71) and the USB interface (72) are electrically connected to each other on the circuit board component (7), the control keys (71) are provided in a through-hole provided in the handle front shell (45) and connected to a key panel, and the USB interface (72) is provided in a through-hole provided in the handle rear shell (9) and extends to the outside through the through-hole.

9. 2. The high-speed, air-collecting handheld fan according to claim 1, wherein an air intake cover (6) is provided to cover the air intake port, and the air intake cover (6) is a hollow cover.

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