Fan head and handheld air gathering fan

Abstract

The utility model discloses a fan head and a handheld air gathering fan, and relates to the technical field of fans. An air inlet and an air outlet are formed in the fan head, a fan and a driving assembly of the fan are arranged between the air inlet and the air outlet, the fan comprises a hub and a plurality of blades arranged in the circumferential direction of the hub, the blades are divided into at least two areas in the radial direction of the hub, and the area close to the hub is a first forward swept blade area. The area far away from the hub is a second forward-swept blade area or a positive blade area, and the forward-swept angle of the first forward-swept blade area is larger than that of the second forward-swept blade area or the positive blade area; the air outlet is provided with at least two air channels, one air channel is arranged corresponding to the first forward-swept blade area so that airflow generated by the first forward-swept blade area can pass through, and the other air channel is arranged corresponding to the second forward-swept blade area or the positive blade area so that airflow generated by the second forward-swept blade area or the positive blade area can pass through. According to the technical scheme, the fan head can blow airflow farther and is not prone to collapsing, and the airflow is more concentrated.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan head and a hand-held concentrated fan. Background Art

[0002] In hot weather, a fan is often needed to cool off by the wind. A hand-held fan is a kind of fan that is convenient to carry around. It reduces the volume of the fan and lightens the overall weight. The place of use is not restricted by the mains power grid line, and the electrical energy is provided by the battery carried by itself. At the same time, it is equipped with components that are convenient for the user to hold, and can meet the portable needs to a certain extent.

[0003] However, the existing fan blades have low blowing efficiency, and the air flow is extremely easy to disperse after blowing out of the fan, resulting in the fact that the fan air flow cannot be blown out over a long distance. When actually used, it is necessary to get close to the fan air outlet to feel the coolness. Once the fan is taken away, the wind force will be too small due to the air flow dispersion, and the cooling effect will become worse, which greatly affects the actual experience of the user. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fan head and a hand-held concentrated fan for the defects and deficiencies of the existing technology, which have the advantage that the inner wind blown out by the fan head can drive the outer wind to blow farther by setting the fan blades into special shapes and arranging two air ducts at the air outlet.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is: a fan head, an air inlet and an air outlet are arranged on the fan head, a fan and its driving assembly are arranged between the air inlet and the air outlet, the fan includes a hub and a plurality of blades arranged along the circumferential direction of the hub, the blades are radially separated into at least two regions along the hub, a region close to the hub is a first forward-swept blade region, a region far from the hub is a second forward-swept blade region or a straight blade region, and the forward-swept angle of the first forward-swept blade region is greater than that of the second forward-swept blade region or the straight blade region; at least two air ducts are arranged at the air outlet, one of the air ducts is correspondingly arranged with the first forward-swept blade region for the air flow generated by the first forward-swept blade region to pass through, and this air duct is the second air duct; the other air duct is correspondingly arranged with the second forward-swept blade region or the straight blade region for the air flow generated by the second forward-swept blade region or the straight blade region to pass through, and this air duct is the first air duct.

[0006] Preferably, a wind guiding frame is arranged at the air outlet, the wind guiding frame is arranged in a ring shape, a partition ring is connected to the inner ring of the wind guiding frame, the first air duct is formed between the wind guiding frame and the partition ring, and the second air duct is formed by the inner ring of the partition ring.

[0007] Preferably, an installation cylinder is connected to the inner ring of the partition ring. The installation cylinder is for installing the driving assembly, and the second air duct is arranged between the installation cylinder and the partition ring.

[0008] Preferably, a plurality of first grilles are connected between the air guide frame and the partition ring, and a plurality of second grilles are connected between the partition ring and the installation cylinder.

[0009] Preferably, the length of the first grille in the direction from the air inlet to the air outlet is greater than the length of the second grille in the direction from the air inlet to the air outlet.

[0010] Preferably, the first grille is arranged parallel to the air flow direction blown by the fan, and the second grille is arranged obliquely to the air flow direction blown by the fan.

[0011] Preferably, a rear cover is assembled at the air inlet, and the rear cover and the air guide frame enclose the fan and the driving assembly.

[0012] Preferably, the fan is a mixed-flow fan, and the driving assembly is a motor.

[0013] Preferably, a handle is further arranged at the bottom of the fan head. A control circuit board and a battery coupled to the control circuit board are arranged in the handle, and the driving assembly is coupled to the control circuit board.

[0014] Preferably, an indicator light and a charging interface coupled to the control circuit board are further arranged on the handle.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0016] 1: By arranging an air inlet and an air outlet on the fan head, and arranging a fan and its driving assembly between the air inlet and the air outlet, wherein the fan includes a hub and blades, the blades are radially separated into at least two regions along the hub. A region close to the hub is a first forward-swept blade region, and a region far from the hub is a second forward-swept blade region or a straight blade region. The forward-swept angle of the first forward-swept blade region is greater than that of the second forward-swept blade region or the straight blade region. Therefore, the wind pressure generated by the first forward-swept blade region during the rotation of the hub is greater than that of the second forward-swept blade region or the straight blade region, so that the air flow generated by the second forward-swept blade region or the straight blade region can be driven by the air flow generated by the first forward-swept blade region, thereby increasing the blowing distance of the entire fan.

[0017] 2: At the same time, at least two air ducts are provided at the air outlet, one of which corresponds to the first swept-forward blade area for the air flow generated by the first swept-forward blade area to blow out of the fan head, and the other air duct is correspondingly arranged with the second swept-forward blade area or the straight blade area for the air flow generated by the second swept-forward blade area or the straight blade area to blow out of the fan head, so that the air flow can blow out of the fan head in the direction of the air duct. The air duct plays a role in partitioning and guiding the air flow, and the guided air flow can blow more concentratedly and farther. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a structural schematic diagram of the present invention;

[0020] Figure 2 is corresponding to Figure 1 exploded view;

[0021] Figure 3 is a schematic diagram of the air guide frame of the present invention;

[0022] Figure 4 is a structural schematic diagram of the fan of the present invention;

[0023] Figure 5 is corresponding to Figure 2 partial structural schematic diagram.

[0024] Explanation of the reference numerals in the drawings: 1, grip; 101, front shell; 102, rear shell; 11, button; 12, indicator light; 13, charging interface; 2, fan head; 201, front frame; 202, rear frame; 21, air outlet; 22, buckle; 23, clamping block; 24, air inlet; 3, air guide frame; 31, frame body; 32, first air duct; 321, first grille; 33, second air duct; 331, second grille; 34, separating ring; 35, wire passing hole; 36, mounting cylinder; 4, fan; 41, hub; 42, jack; 43, fan blade; 431, first swept-forward blade area; 432, straight blade area; 5, rear cover; 51, abutting rib. Detailed Description of the Embodiments

[0025] The following will further describe the present invention in detail with reference to the drawings.

[0026] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute to the creation, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0027] This embodiment relates to a fan head 2, as Figure 1 and Figure 2 shown. The fan head 2 is arranged in a cylindrical shape. Specifically, the fan head 2 is assembled by a front frame 201 and a rear frame 202. A cavity is formed between the front frame 201 and the rear frame 202. The fan 4 and its driving assembly are arranged in the cavity. An air inlet 24 and an air outlet 21 are arranged on the fan head 2. Specifically, the air outlet 21 is arranged on the front frame 201, and the air inlet 24 is arranged on the rear frame 202. The fan 4 and its driving assembly are arranged between the air inlet 24 and the air outlet 21.

[0028] It should be noted that a buckle 22 is arranged on the front frame 201, and a clamping block 23 is arranged on the rear frame 202. The buckle 22 can be buckled with the clamping block 23 to realize the fixed assembly of the front frame 201 and the rear frame 202. In other embodiments, the front frame 201 and the rear frame 202 are provided with screw holes, and the assembly is realized by passing screws through; or the front frame 201 and the rear frame 202 are glued.

[0029] Preferably, the driving assembly is a motor, and the fan 4 is a mixed-flow fan. The fan 4 includes a hub 41 and a plurality of blades arranged circumferentially along the hub 41. A jack 42 is arranged on the rotation center line of the hub 41. The output shaft of the driving assembly is inserted into the jack 42, so that the driving assembly drives the hub 41 to rotate. The rotation of the hub 41 drives the blades to rotate, sucks in air flow from the air inlet 24, and blows out the air flow toward the air outlet 21. In other embodiments, the fan 4 is an axial-flow fan.

[0030] As Figure 4 shown, the blades are radially divided into at least two regions along the hub 41. The two regions are connected to each other, and an included angle is formed between the two regions. Among them, a region close to the hub 41 is a first forward-swept blade region 431, and a region far from the hub 41 is a second forward-swept blade region or a straight blade region 432. The forward-swept angle of the first forward-swept blade region 431 is greater than the forward-swept angle of the second forward-swept blade region.

[0031] In this embodiment, a region far from the hub 41 is a straight blade region 432, and the blades in the straight blade region 432 are straight-swept with respect to the hub 41. There is a forward-swept angle between the blades in the first forward-swept blade region 431 and the hub 41. The forward-swept angle ranges from 20° to 30°. In other embodiments, the region far from the hub 41 is a second forward-swept blade region, and the forward-swept angle of the second forward-swept blade region is less than the forward-swept angle of the first forward-swept blade region 431, that is, the forward-swept angle of the second forward-swept blade region ranges from: 10° to 19°.

[0032] It should be noted that at least two air ducts are arranged at the air outlet 21, one of which is arranged corresponding to the first forward-swept blade area 431, so that the airflow generated by the first forward-swept blade area 431 can pass through, and the air duct is the second air duct 33; the other air duct is the first air duct 32, and the first air duct 32 is arranged corresponding to the second forward-swept blade area or the positive blade area 432, so that the airflow generated by the second forward-swept blade area or the positive blade area 432 can pass through.

[0033] The first air duct 32 and the second air duct 33 are both arranged in an annular shape, the diameter of the first air duct 32 is larger than that of the second air duct 33, and the first air duct 32 is arranged in an outer ring of the second air duct 33. After the high-pressure airflow generated by the first forward-swept blade area 431 is blown out through the second air duct 33, the direct current airflow blown out by the positive blade area 432 is blown out through the first air duct 32 at the same time. At this time, the high-pressure airflow can drive the direct current airflow to blow out a longer distance, reduce the airflow collapse caused by the use distance limit, and improve the actual experience of the user.

[0034] like Figure 3 As shown, the air outlet 21 is provided with an air guide frame 3, which is arranged in an annular shape, and the outer ring of the air guide frame 3 abuts the front frame 201 of the fan head 2. Specifically, a plurality of abutting ribs 51 can be arranged on the outer ring of the air guide frame 3, and the abutting ribs 51 can increase the contact area between the air guide frame 3 and the front frame 201. The abutted air guide frame 3 can reduce the vibration generated by the fan 4 during rotation and be transmitted to the front frame 201, thereby reducing noise in disguise. The first grille 321 is arranged parallel to the airflow direction blown out by the fan 4, and the second grille 331 is arranged obliquely to the airflow direction blown out by the fan 4.

[0035] like Figure 5 As shown, the air inlet 24 is equipped with a rear cover 5, which is arranged in an annular shape. The rear cover 5 is also provided with a plurality of abutting ribs 51 abutting the rear frame 202 on the outer side, so that the rear cover 5 can reduce the vibration generated by the fan 4 during rotation and transmit it to the front frame 201, thereby reducing noise in disguise. At the same time, the inner side of the rear cover 5 is arranged in an arc shape, and the rear cover 5 can abut against the air guide frame 3, thereby wrapping the side of the fan 4 and the drive assembly, and can reduce the turbulence phenomenon caused by the airflow on the irregular surfaces of the front frame 201 and the rear frame 202.

[0036] It should be supplemented that a separation ring 34 is connected to the inner ring of the air guide frame 3 , a first air duct 32 is formed between the air guide frame 3 and the separation ring 34 , and the inner ring of the separation ring 34 forms a second air duct 33 .

[0037] In other embodiments, a separating ring is further connected in the inner ring of the separating ring 34, so that a second air duct 33 is formed between the separating ring 34 and the separating ring, and a third air duct is formed in the separating ring. At the same time, a third forward-swept blade area is further provided between the first forward-swept blade area 431 and the hub 41 on the fan 4. The third forward-swept blade area is correspondingly arranged with the third air duct, and the forward-swept angle of the third forward-swept blade area is different from that of the first forward-swept blade area 431. A fourth air duct or a fifth air duct can also be arranged outside the air guiding frame 3, and the number of air ducts and forward-swept blade areas is not limited.

[0038] Preferably, an installation cylinder 36 is connected to the inner ring of the separating ring 34. The installation cylinder 36 is arranged in a cylindrical shape, and its opening faces the air inlet 24. The opening of the installation cylinder 36 can be used for installing and fixing the driving component. In this embodiment, the second air duct 33 is arranged between the installation cylinder 36 and the separating ring 34. Therefore, the air output volume of the first air duct 32 is greater than that of the second air duct 33.

[0039] It should be added that a plurality of first grilles 321 are connected between the air guiding frame 3 and the separating ring 34, and a plurality of second grilles 331 are connected between the separating ring 34 and the installation cylinder 36. The first grilles 321 and the second grilles 331 can be used for arranging the separating ring 34 and the installation cylinder 36 on the air outlet 21 of the air guiding frame 3. At the same time, the length of the first grilles 321 in the direction from the air inlet 24 to the air outlet 21 is greater than the length of the second grilles 331 in the direction from the air inlet 24 to the air outlet 21. Therefore, the airflow is relatively straighter through the first grilles 321 compared to the second grilles 331.

[0040] Preferably, the first grilles 321 are arranged parallel to the airflow direction blown by the fan 4, that is, the airflow blown by the fan 4 passes through the first grilles 321 and blows out of the air outlet 21 in a straight line. The second grilles 331 are arranged obliquely to the airflow direction blown by the fan 4, that is, the airflow blown by the fan 4 is inclined and rotates when passing through the second grilles 331 and blows out of the air outlet 21. Thus, the rotating high-pressure airflow drives the straight airflow to blow out a farther distance.

[0041] In other embodiments, the first grilles 321 are arranged obliquely to the airflow direction blown by the fan 4, or the second grilles 331 are arranged parallel to the airflow direction blown by the fan 4. It can be inclined or vertical according to different usage requirements. For example, the second grilles 331 are arranged parallel to the airflow direction blown by the fan 4 to reduce noise.

[0042] This embodiment relates to a handheld concentrating fan, such as Figure 3 and Figure 5As shown in the figure, the handheld concentrating fan is provided with the above-mentioned fan head 2, and a grip 1 is additionally arranged at the bottom of the fan head 2. The grip 1 is specifically composed of a front shell 101 and a rear shell 102. The front shell 101 corresponds to the front frame 201 of the fan head 2, and the rear shell 102 corresponds to the rear frame 202 of the fan head 2. The front shell 101 and the rear shell 102 are also assembled through a buckle 22 and a clamping block 23.

[0043] In this embodiment, the front shell 101 and the front frame 201 are integrally formed, and the rear shell 102 and the rear frame 202 are integrally formed. Moreover, the front shell 101 is communicated with the front frame 201, and the rear shell 102 is communicated with the rear frame 202. In other embodiments, the front shell 101 and the front frame 201 are assembled by clamping, and the rear shell 102 and the rear frame 202 are also assembled by clamping. The clamping assembly can be realized by positioning blocks that are clamped with each other.

[0044] Preferably, a control circuit board is arranged in the grip 1, and a battery coupled to the control circuit board. The battery can supply power to the drive assembly through the control circuit board, and can also supply power to other electronic components coupled to the control circuit board. The battery is preferably a rechargeable battery. A charging interface 13 coupled to the control circuit board is arranged on the grip 1. The charging interface 13 can be externally connected to an external power source to charge the battery through the control circuit board. The control circuit board in other embodiments can also be arranged in the fan head 2.

[0045] It should be added that the other electronic components coupled to the control circuit board are a button 11 and an indicator light 12. The button 11 can control the output power of the drive assembly to be adjusted step by step, and can also control the switch of the drive assembly; a plurality of indicator lights 12 are arranged. The lighting of different numbers of indicator lights 12 can indicate the level of the battery power or indicate which level the output power of the drive assembly is at.

[0046] It should be added that a wire routing hole 35 is also arranged on the air guide frame 3. The wire routing hole 35 reaches the inner wall of the installation cylinder 36 from the outer ring of the air guide frame 3. The control circuit board and the drive assembly are coupled through a wire. Therefore, the wire can be connected from the control circuit board to the drive assembly in the installation cylinder 36 via the wire routing hole 35.

[0047] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should all be covered within the scope of the claims of the present invention.

Claims

1. A fan head, wherein an air inlet and an air outlet are arranged on the fan head, and a fan and a driving component thereof are arranged between the air inlet and the air outlet, wherein: The fan comprises a hub and a plurality of blades arranged along the circumference of the hub, wherein the blades are radially divided into at least two regions, a region close to the hub being a first forward-swept blade region, and a region away from the hub being a second forward-swept blade region or a positive blade region, wherein the forward sweep angle of the first forward-swept blade region is greater than the forward sweep angle of the second forward-swept blade region or the positive blade region; The air outlet is provided with at least two air ducts, one of which is provided corresponding to the first forward-swept blade area for the airflow generated by the first forward-swept blade area to pass through, and this air duct is the second air duct; the other air duct is provided corresponding to the second forward-swept blade area or the positive blade area for the airflow generated by the second forward-swept blade area or the positive blade area to pass through, and this air duct is the first air duct.

2. The fan head according to claim 1, characterized in that: The air outlet is provided with an air guide frame, which is arranged in a ring shape. The inner ring of the air guide frame is connected with a separator ring. The first air duct is formed between the air guide frame and the separator ring, and the inner ring of the separator ring forms the second air duct.

3. The fan head according to claim 2, characterized in that: The inner ring of the separation ring is connected with a mounting tube, the mounting tube is used for mounting the driving component, and the second air duct is arranged between the mounting tube and the separation ring.

4. The fan head according to claim 3, characterized in that: A plurality of first grilles are connected between the air guide frame and the separation ring, and a plurality of second grilles are connected between the separation ring and the mounting tube.

5. The fan head according to claim 4, characterized in that: The length of the first grille along the direction from the air inlet to the air outlet is greater than the length of the second grille along the direction from the air inlet to the air outlet.

6. The fan head according to claim 4, characterized in that: The first grille is arranged in parallel with the direction of the airflow blown out by the fan, and the second grille is arranged in an inclined manner with respect to the direction of the airflow blown out by the fan.

7. The fan head according to claim 2, characterized in that: The air inlet is equipped with a rear cover, and the rear cover and the air guide frame wrap the fan and the driving assembly.

8. The fan head according to claim 2, characterized in that: The fan is a mixed flow fan, and the driving component is a motor.

9. A handheld focusing fan, comprising the fan head according to claim 1, characterized in that: A handle is also provided at the bottom of the fan head. A control circuit board and a battery coupled to the control circuit board are provided in the handle. The drive assembly is coupled to the control circuit board.

10. The handheld concentrating fan according to claim 9, characterized in that: The handle is also provided with an indicator light and a charging interface coupled with the control circuit board.

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