Portable fan

Abstract

A portable fan, comprising: a fan housing (1); and a fan assembly (2), the fan assembly (2) being arranged in the fan housing (1). The fan housing (1) is provided with a fan air inlet and fan air outlet leading to the fan assembly (2). The fan housing (1) comprises: a first housing (11) and a second housing (12), the first housing (11) being sleeved on the second housing (12).

Description

Portable fan

[0001] This application claims priority to Chinese patent applications with application numbers 202422272712.0, 202422773644.6, 202422776949.2, 202423322577.2, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the field of fans, in particular to a portable fan. BACKGROUND

[0003] In hot summer, fans have become an essential item for people to eliminate the heat. With the increasing demand for convenience, more and more people prefer lighter and more portable fans.

[0004] In the prior art, portable fans are often assembled in a half-shell manner, that is, two half-shells are combined to form a complete fan shell. The present inventor has found in research that the half-shell connection to form a fan shell has insufficient connection strength and is prone to cracking during impact. The fan shell does not adequately protect the internal devices, and the internal functional devices are prone to damage during impact.

[0005] SUMMARY

[0006] The present application aims to provide a portable fan with more stable connection and better protection for internal devices.

[0007] The present application provides a portable fan, comprising:

[0008] a fan shell;

[0009] a fan assembly disposed in the fan shell, and the fan shell is provided with a fan inlet and a fan outlet communicating with the fan assembly;

[0010] The fan shell comprises a first shell and a second shell, and the first shell is sleeved on the second shell. BRIEF DESCRIPTION OF DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0012] FIG. 1 is a schematic diagram of the overall structure of a clamping fan according to one specific embodiment of the present application;

[0013] FIG. 2 is an exploded schematic diagram of the clamping fan according to one specific embodiment of the present application;

[0014] Fig. 3 is a cross-sectional view of a clamping fan according to one embodiment of the present application;

[0015] Fig. 4 is a schematic view of a first housing structure according to one embodiment of the present application;

[0016] Fig. 5 is a schematic view of a second housing structure according to one embodiment of the present application;

[0017] Fig. 6 is a cross-sectional view of a second housing according to one embodiment of the present application;

[0018] Fig. 7 is a schematic view of a third housing structure according to one embodiment of the present application;

[0019] Fig. 8 is a cross-sectional view of a third housing according to one embodiment of the present application;

[0020] Fig. 9 is a schematic view of a clamping fan according to one embodiment of the present application;

[0021] Fig. 10 is a schematic view of a mixer structure according to one embodiment of the present application;

[0022] Fig. 11 is a schematic view of a bottom cover plate structure according to one embodiment of the present application;

[0023] Fig. 12 is a schematic view of a fan assembly structure according to one embodiment of the present application;

[0024] Fig. 13 is a schematic view of a third PCB and mounting seat combination structure according to one embodiment of the present application;

[0025] Fig. 14 is a schematic view of a portable fan according to one embodiment of the present application;

[0026] Fig. 15 is an exploded view of a portable fan according to one embodiment of the present application;

[0027] Fig. 16 is a schematic view of a first housing according to one embodiment of the present application;

[0028] Fig. 17 is a schematic view of a second housing according to one embodiment of the present application;

[0029] Fig. 18 is a cross-sectional view of a second housing according to one embodiment of the present application;

[0030] Fig. 19 is a schematic view of a third housing according to one embodiment of the present application;

[0031] Fig. 20 is a schematic view of a third housing according to one embodiment of the present application;

[0032] Fig. 21 is a schematic view of a portable fan according to one embodiment of the present application;

[0033] Fig. 22 is a second perspective view of the portable fan of one embodiment of the present application;

[0034] Fig. 23 is a cross-sectional view of the portable fan of one embodiment of the present application;

[0035] Fig. 24 is a second perspective view of the second housing of one embodiment of the present application;

[0036] Fig. 25 is a cross-sectional view of the second housing of one embodiment of the present application;

[0037] Fig. 26 is a first perspective view of the flow mixer of one embodiment of the present application;

[0038] Fig. 27 is a second perspective view of the flow mixer of one embodiment of the present application;

[0039] Fig. 28 is a perspective view of the portable fan of one embodiment of the present application;

[0040] Fig. 29 is a cross-sectional view of the portable fan of one embodiment of the present application;

[0041] Fig. 30 is an exploded view of the portable fan of one embodiment of the present application;

[0042] Fig. 31 is a perspective view of the portable fan of one embodiment of the present application;

[0043] Fig. 32 is a cross-sectional view of the portable fan of one embodiment of the present application;

[0044] Fig. 33 is a partially exploded view of the portable fan of one embodiment of the present application;

[0045] Fig. 34 is a top view of the portable fan of one embodiment of the present application;

[0046] Fig. 35 is a perspective view of the third housing of one embodiment of the present application;

[0047] Fig. 36 is a perspective view of the motor assembly of one embodiment of the present application;

[0048] Fig. 37 is a perspective view of the portable fan of a second embodiment of the present application. DETAILED DESCRIPTION

[0049] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the present specification are for illustrative purposes only.

[0050] Unless otherwise defined, all technical and scientific terms used in the present specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the associated listed items.

[0051] Embodiment 1

[0052] As shown in FIGS. 1-13, a clamping fan includes a fan housing 1, a fan assembly 2, a battery assembly 3, and a clamping structure 4. The fan assembly 2 is arranged in the fan housing 1, and the fan housing 1 is provided with a fan inlet and a fan outlet communicating with the fan assembly 2; the battery assembly 3 is arranged in the fan housing 1, and the battery assembly 3 is electrically connected with the fan assembly 2; the clamping structure 4 is arranged on the fan housing 1; the fan assembly 2 and the battery assembly 3 are arranged on opposite sides of the clamping structure 4.

[0053] In the above embodiment, by arranging the fan assembly 2 and the battery assembly 3 on opposite sides of the clamping structure 4, the center of gravity of the clamping fan is evenly distributed along the clamping mechanism, so that the clamping fan does not tilt to one side when in use. The stability of the clamping fan is enhanced.

[0054] In some embodiments, the fan housing 1 includes a first housing 11 and a second housing 12, the first housing 11 is sleeved on the second housing 12, and the inner surface of the first housing 11 and / or the second housing 12 is sprayed with identification information.

[0055] In some embodiments, the fan housing 1 further includes a third housing 13, the third housing 13 is inserted into the second housing 12.

[0056] In some embodiments, the second housing 12 is provided with a first buckle 121, and the third housing 13 is provided with a second buckle 131 matched with the first buckle 121.

[0057] In some embodiments, the first shell 11 covers the first buckle 121 at a corresponding position to limit the deformation space of the first buckle 121.

[0058] In some embodiments, the first shell 11 is provided with a first opening 111 at the bottom surface, and a bottom cover plate 14 is arranged at the first opening 111. The bottom cover plate 14 is connected to the second shell 12, and the bottom cover plate 14 and the first shell 11 abut each other.

[0059] In some embodiments, the bottom cover plate 14 is provided with a third buckle 141, and the second shell 12 is provided with a buckle slot 122 matched with the third buckle 141. The third buckle 141 and the buckle slot 122 are mixed, or the shell edge 123 of the second shell 12 is buckled.

[0060] In some embodiments, the second shell 12 is provided with a second opening 124, and the second opening 124 and the first opening 111 are communicated. The opening area of the second opening 124 is smaller than that of the first opening 111.

[0061] In some embodiments, the fan air inlet includes a first air inlet 15 arranged on the surface of the fan shell 1 facing the wearer.

[0062] In some embodiments, the fan air inlet further includes a second air inlet 16 arranged on the bottom surface of the fan shell 1; and / or,

[0063] The fan air inlet further includes a third air inlet 17 arranged on the surface adjacent to the first air inlet 15.

[0064] In some embodiments, the first air inlet 15 includes a plurality of first air inlets 151, the second air inlet 16 includes a plurality of second air inlets 161, and the opening area of the first air inlet 151 is larger than that of the second air inlet 161; and / or,

[0065] The first air inlet 15 includes a plurality of first air inlets 151, the third air inlet 17 includes a plurality of third air inlets 171, and the opening area of the first air inlet 151 is larger than that of the third air inlet 171.

[0066] In some embodiments, the fan shell 1 is provided with an air inlet grille 18 at the position of the first air inlet 15. The air inlet grille 18 includes a plurality of fourth air inlets 181, the first air inlet 15 includes a plurality of first air inlets 151, and the opening area of the first air inlet 151 is larger than that of the fourth air inlet 181.

[0067] In some embodiments, the fan air inlet comprises a plurality of air inlets, a flow mixer 5 is arranged in the fan housing 1, and the flow mixer 5 is in communication with the fan assembly 2 and the plurality of air inlets, respectively.

[0068] In some embodiments, one end of the flow mixer 5 is connected with the fan housing 1, and the other end of the flow mixer 5 is in abutment with the fan assembly 2.

[0069] In some embodiments, a plurality of air inlet windows 51 are arranged on the flow mixer 5, and the plurality of air inlet windows 51 correspond to the plurality of air inlets, respectively.

[0070] In some embodiments, the flow mixer 5 further comprises a partition plate 52 arranged on the side facing the battery assembly 3.

[0071] In some embodiments, a pressurizing seat 6 is arranged in the fan housing 1, the pressurizing seat 6 is connected with the fan housing 1 through a plurality of first static blades 61, and the pressurizing seat 6 is connected with one end of the fan assembly 2 opening the fan air outlet.

[0072] In some embodiments, along the air outlet direction of the fan air outlet, the distance between the pressurizing seat 6 and the fan housing 1 gradually decreases first and then gradually increases; and / or,

[0073] The fan assembly 2 comprises an assembly seat 21 and a motor housing 22, the assembly seat 21 is connected with the motor housing 22 through a plurality of second static blades 23, and the motor housing 22 is connected with the fan housing 1.

[0074] In some embodiments, the pressurizing seat 6 is arranged corresponding to the assembly seat 21, and there is a gap between the pressurizing seat 6 and the assembly seat 21.

[0075] In some embodiments, the fan assembly 2 comprises a first PCB circuit board 24, and the first PCB circuit board 24 is connected with the assembly seat 21 through clamping.

[0076] In some embodiments, a first ventilation hole 25 is arranged on the first PCB circuit board 24.

[0077] In some embodiments, the clamping fan comprises a second PCB circuit board 63 arranged in the pressurizing seat 6; and / or,

[0078] The pressurizing seat 6 and / or the assembly seat 21 are arranged with a second ventilation hole 26 communicating with the first ventilation hole 25.

[0079] In some embodiments, the second PCB circuit board 63 is configured as a polygon, and an empty space 65 is formed between the second PCB circuit board 63 and the inner wall of the pressurizing seat 6.

[0080] In some embodiments, the pressure seat 6 further includes: a top cover plate 62, on which a fourth fastener 621 is provided, and a fifth fastener 64 that cooperates with the fourth fastener 621 is provided on the inner wall of the pressure seat 6 below the clearance position 65. After the fourth fastener 621 is inserted into the clearance position 65, it is connected to the fifth fastener 64.

[0081] In some embodiments, the clamping fan further includes a control component 7, which is disposed on the fan housing 1.

[0082] In some embodiments, a third PCB circuit board 71 is provided between the control component 7 and the battery component 3, with one end of the control component 7 attached to the third PCB circuit board 71 and the other end of the control component 7 protruding and / or flush with the surface of the fan housing 1.

[0083] In some embodiments, a mounting bracket 8 is provided between the battery assembly 3 and the third PCB circuit board 71, the mounting bracket 8 is connected to the fan housing 1, and the third PCB circuit board 71 is connected to the mounting bracket 8.

[0084] In some embodiments, one end of the mounting bracket 8 is connected to the fan housing 1, the mounting bracket 8 is provided with a sixth fastener 81, and the fan housing 1 is provided with a connecting strip that cooperates with the sixth fastener; and / or,

[0085] One end of the mounting bracket 8 is connected to the fan housing 1, and the other end of the mounting bracket 8 is inserted into the clamping slot 125 of the fan housing 1.

[0086] In some embodiments, the third housing 13 has an assembly groove 132, one end of the clamping structure 4 is connected to the assembly groove 132, the other end of the clamping structure 4 extends out of the assembly groove 132, and the part of the clamping structure 4 extending out of the assembly groove 132 abuts against the surface of the first housing 11 or forms a narrow gap.

[0087] In some embodiments, a mixer 5 is provided inside the fan housing 1, with one end of the mixer 5 connected to the fan housing 1 and the other end of the mixer 5 abutting and engaging with the second housing 12.

[0088] In some embodiments, the second housing 12 protrudes toward the fan assembly 2 to form a support frame 126, a portion of the structure of the mixer 5 abuts against the support frame 126, and the mixer 5 extends toward the direction away from the fan assembly 2 to form a snap-fit ​​plate 53, which is connected to the second housing 12.

[0089] It should be noted that any of the embodiments in this example can be implemented independently or in combination with one or more other embodiments. When implementing in combination, the combination method should not be limited to the combination methods listed in this example.

[0090] Embodiment 2

[0091] Please refer to FIG. 14 and FIG. 15, FIG. 14 is a schematic diagram of the overall structure of the portable fan of the embodiment; and FIG. 15 is a schematic diagram of the exploded structure of the fan shell 1 of the embodiment.

[0092] As shown in FIG. 14 and FIG. 15, the portable fan comprises: a fan shell 1; a fan assembly 2, which is arranged in the fan shell 1, and the fan shell 1 is provided with a fan air inlet 15 and a fan air outlet 16, which are communicated with the fan assembly 2; and the fan shell 1 comprises: a first shell 11 and a second shell 12, and the first shell 11 is sleeved on the second shell 12.

[0093] In the embodiment, the fan shell 1 comprises: the first shell 11 and the second shell 12, and the first shell 11 is sleeved on the second shell 12. The connection mode between the first shell 11 and the second shell 12 is (not limited to): interference fit, screw connection, adhesive connection or buckle connection, etc.

[0094] The sleeving mode of the first shell 11 and the second shell 12 is: full wrapping or partial wrapping. When the first shell 11 fully wraps the second shell 12, the fan air inlet 15 and the fan air outlet 16 are provided on the first shell 11 and the second shell 12. When the first shell 11 partially wraps the second shell 12, the fan air inlet 15 is provided on the first shell 11 and the second shell 12, and the fan air outlet 16 is provided on the exposed position of the second shell 12 which is not wrapped.

[0095] In some embodiments, the fan shell 1 comprises: the first shell 11, the second shell 12 and a third shell 13, wherein the first shell 11 is sleeved on the second shell 12, and the third shell 13 is inserted into the second shell 12. The fan assembly 2 is connected with the third shell 13, and each air inlet is penetrated through the first shell 11 and the second shell 12. The fan air inlet 15 is provided on the first shell 11 and the second shell 12, and the fan air outlet 16 is provided on the third shell 13.

[0096] The fan assembly 2 comprises: a fan motor and fan blades. The motor assembly is a three-phase high-speed motor, but the motor assembly is not limited to this. According to different specific application scenarios, in some embodiments, the motor assembly can be (not limited to): a single-phase motor or a two-phase motor.

[0097] The fan blades are axial flow blades. In the process of air inlet and air outlet, the axial flow blades do not need to turn the airflow, so there is no need to set a guide structure inside the portable fan, which simplifies the structure inside the portable fan and improves the blowing efficiency of the portable fan.

[0098] In the above embodiment, the fan housing 1 is provided as a first housing 11 and a second housing 12, and the first housing 11 is sleeved on the second housing 12. This connection structure makes the fan housing 1 form a double-layer structure at the sleeving position of the first housing 11 and the second housing 12. The second housing 12 is sleeved by the first housing 11, so that the connection area between the first housing 11 and the second housing 12 is larger, and the connection relationship is more stable. At the same time, the double-layer housing structure has stronger anti-falling and protection performance, and can better protect the internal functional devices.

[0099] In some embodiments, the first housing 11 is made of transparent or translucent material. The material of the first housing 11 includes (but is not limited to) polystyrene, polymethyl methacrylate, polycarbonate, polyethylene terephthalate, transparent nylon, AS (acryl-styrene copolymer) and other plastic transparent materials; tempered glass; quartz, artificial optical crystal; sapphire.

[0100] The first housing 11 is made of transparent or translucent material, so that the overall appearance of the fan housing 1 presents an external transparent state, greatly improving the aesthetics of the portable fan.

[0101] The sleeving mode of the first housing 11 on the second housing 12 is that the first housing 11 is completely sleeved on the second housing 12. However, the sleeving mode of the first housing 11 and the second housing 12 is not limited to this. According to different specific application scenarios, in some embodiments, the first housing 11 can be partially sleeved on the second housing 12 or the first housing 11 is provided as a partially hollow structure and is completely or partially sleeved on the second housing 12.

[0102] Please refer to FIG. 16, which is a structural schematic diagram of the first housing of the embodiment.

[0103] In some embodiments, the inner surface of the first housing 11 and / or the outer surface of the second housing 12 is provided with identification information.

[0104] The identification information includes specific fonts or patterns with a marking function, such as trademarks, logos, product names, and pictures, gradient layers, decals and other structures with a decorative function.

[0105] The identification information is provided on the inner surface of the first housing 11, the outer surface of the second housing 12, or the inner surface of the first housing 11 and the outer surface of the second housing 12 by processes such as electroplating, spraying, pasting, painting and the like.

[0106] The identification information is arranged on the inner surface of the first shell 11, the outer surface of the second shell 12, or the inner surface of the first shell 11 and the outer surface of the second shell 12. Since the relative positions of the first shell 11 and the second shell 12 do not change, the first shell 11 can protect the identification information from being damaged or worn by external force in daily use, so that the identification information can be kept for a long time. At the same time, the first shell 11 is made of transparent or translucent material, so that the user can observe the identification information through the first shell 11, further improving the aesthetics of the portable fan.

[0107] In some embodiments, the first shell 11 or the second shell 12 is provided with a lamp strip. The lamp strip is electrically connected to the battery in the portable fan through the second shell 12. The arrangement of the lamp strip can make the portable fan have the function of lighting. At the same time, in the night environment, the identification information can be more beautiful after the lamp strip emits light, and the aesthetics of the portable fan is improved.

[0108] In some embodiments, the fan shell 1 further comprises a third shell 13 which is inserted into the second shell 12.

[0109] The connection mode of the third shell 13 and the second shell 12 is not limited to one or a combination of the following connection modes: interference fit, snap connection, screw connection, and adhesive connection.

[0110] The third shell 13 is arranged to assemble the functional devices of the portable fan, including but not limited to: switches, fan assemblies 2, battery assemblies 3, PCB circuit boards, etc. The arrangement of the third shell 13 can make the functional devices pre-assembled in the third shell 13, and then the third shell 13 and the second shell 12 are assembled. This avoids directly assembling the functional devices in the second shell 12, and reduces the assembly difficulty.

[0111] The arrangement of the third shell 13 can also support the second shell 12 and the first shell 11, so that the fan shell 1 has stronger anti-extrusion and anti-falling ability. The three-shell assembly structure not only improves the physical resistance of the fan shell 1, but also has the effect of improving the aesthetics.

[0112] In some embodiments, the inner surface of the second shell 12 is provided with a first buckle 121, and the outer surface of the third shell 13 is provided with a second buckle 138 matched with the first buckle 121.

[0113] Please refer to FIG. 17 and FIG. 18; FIG. 17 is a schematic view of the second shell structure of the embodiment; and FIG. 18 is a sectional view of the second shell of the embodiment.

[0114] As shown in FIG. 17 and FIG. 18, the second shell 12 and the third shell 13 are connected by a snap-fit manner, and the first snap-fit part 121 is arranged on the inner surface of the second shell 12, and the second snap-fit part 138 is arranged on the outer surface of the third shell 13. The inner snap-fit connection manner makes the outer surface of the second shell 12 smooth, and the visual aesthetics is improved. The inner snap-fit connection manner needs the second shell 12 to deform to make the first snap-fit part 121 and the second snap-fit part 138 mutually disengage, and the second shell 12 is supported by the third shell 13, so that the deformation is difficult. Therefore, the snap-fit connection manner makes the connection of the second shell 12 and the third shell 13 more compact and firm.

[0115] In some embodiments, the first shell 11 is provided with a first opening 111 at the bottom surface, and the bottom cover plate 14 is arranged at the first opening 111, the bottom cover plate 14 is connected with the second shell 12, and the bottom cover plate 14 is in abutment with the first shell 11.

[0116] The connection manner between the second shell 12 and the bottom cover plate 14 is not limited to: snap-fit connection, screw connection, adhesive connection, rivet connection, etc.

[0117] The bottom cover plate 14 is in abutment with the first shell 11, so that the bottom cover plate 14 can provide abutment force for the sleeving of the first shell 11 and the second shell 12, and avoid the mutual disengagement between the first shell 11 and the second shell 12. By fixing the first shell 11 through the bottom cover plate 14, the connection marks on the first shell 11 can be avoided, and the overall aesthetics of the portable fan can be improved.

[0118] In some embodiments, the first shell 11 covers the corresponding position of the first snap-fit part 121 to limit the deformation space of the first snap-fit part 121.

[0119] The first shell 11 is sleeved on the second shell 12, and the first shell 11 covers the corresponding position of the first snap-fit part 121, and the covering of the first shell 11 can limit the deformation space of the first snap-fit part 121, avoid the disengagement of the first snap-fit part 121 under external force, and make the portable fan more firm and durable.

[0120] In some embodiments, the bottom cover plate 14 is provided with a third snap-fit part 141, the second shell 12 is provided with a card hole 127 matched with the third snap-fit part 141, and the third snap-fit part 141 is snap-fit connected with the card hole 127 and / or the shell edge 123 of the second shell 12.

[0121] The third fastener 141 is arranged on the bottom cover plate 14, and the second shell 12 is provided with a buckle hole 127 matched with the third fastener 141. The third fastener 141 is inserted into the buckle hole 127 to be connected with the second shell 12. In some embodiments, the second shell 12 is limited by space, and it is inconvenient to arrange the buckle hole 127. In this case, the third fastener 141 is directly connected with the shell edge 123 of the second shell 12 or the groove recessed in the shell edge 123.

[0122] In some embodiments, the second shell 12 has a large space in some positions, and the buckle hole 127 is arranged in these positions. In some positions, the space is insufficient, and the buckle hole 127 is not arranged. Correspondingly, some third fasteners 141 are inserted into the buckle hole 127 to be connected with the second shell 12, and some third fasteners 141 are directly connected with the shell edge 123 of the second shell 12 or the groove recessed in the shell edge 123. This connection mode makes full use of the space structure of the second shell 12. The buckle hole 127 can limit the third fastener 141 inserted therein, and prevent the bottom cover plate 14 from rotating relative to the second shell 12, so that the structure of the fan shell 1 is more compact and stable.

[0123] The third fastener 141 is connected with the second shell 12 by buckling, which facilitates the assembly of the bottom cover plate 14 and improves the assembly efficiency.

[0124] In some embodiments, the second shell 12 is provided with a second opening 124, the second opening 124 and the first opening 111 are communicated, and the opening area of the second opening 124 is smaller than that of the first opening 111. The area of the first opening 111 is larger than that of the second opening 124, so that the first shell 11 and the second shell 12 are misaligned at the bottom surface. The structure misaligned by the second shell 12 is the shell edge 123 connected with the third fastener 141. The misalignment relationship formed by the area relationship between the first opening 111 and the second opening 124 can not only make the bottom cover plate 14 connected with the second shell 12 by buckling, but also naturally form an abutting connection between the bottom cover plate 14 and the first shell 11. The hierarchical relationship of the space structure is fully utilized, and the purpose of fixing the first shell 11 and the second shell 12 is achieved, which is a clever design.

[0125] In some embodiments, the first fastener 121 is a plurality of clamping claws 122, and any clamping claw 122 and its two adjacent clamping claws 122 form a triangular stable structure. The second fastener 138 is a plurality of clamping grooves 138a, and any clamping groove 138a and its two adjacent clamping grooves 138a form a triangular stable structure.

[0126] The first clamping member 121 includes three clamping claws 122. However, the number of clamping claws 122 of the first clamping member 121 is not limited to this, and in some embodiments, the number of clamping claws 122 can be (but is not limited to) 4, 5, 6, or more, depending on the specific application scenario.

[0127] The second clamping member 138 includes three clamping slots 138a. However, the number of clamping slots 138a of the second clamping member 138 is not limited to this, and in some embodiments, the number of clamping slots 138a can be (but is not limited to) 4, 5, 6, or more, depending on the specific application scenario.

[0128] The clamping claws 122 of the first clamping member 121 and the clamping slots 138a of the second clamping member 138 that matches them both form a triangular stable structure, enabling the clamping connection of the first shell 11 and the second shell 12. The stability of the triangular structure improves the connection strength of the first shell 11 and the second shell 12. Not only can it resist the pulling force along the vertical direction of the fan shell 1, but also can resist the impact of the horizontal force in the horizontal direction of the fan shell 1, making the connection of the first shell 11 and the second shell 12 more stable.

[0129] In some embodiments, first and second edge slots 125 and 126 are respectively formed on the two opposite sides of the first and second shells 11 and 12, and at least part of the structure of the third shell 13 is inserted into the first and second edge slots 125 and 126.

[0130] First and second edge slots 125 and 126 are respectively formed on the two opposite sides of the first and second shells 11 and 12, and at least part of the structure of the third shell 13 is inserted into the first and second edge slots 125 and 126. This structure increases the contact area between the first, second, and third shells 11, 12, and 13, making the connection between the third shell 13 and the second shell 12 more stable.

[0131] In some embodiments, a first assembly compartment 133 is provided in the third shell 13, and the fan assembly 2 is arranged in the first assembly compartment 133.

[0132] Please refer to FIG. 19 and FIG. 20, FIG. 19 is a third shell structure schematic diagram of this embodiment; FIG. 20 is a second perspective view structure schematic diagram of this embodiment.

[0133] As shown in FIG. 19 and FIG. 20, a first assembly compartment 133 is provided in the third shell 13, so that the fan assembly 2 can be independently arranged in the first assembly compartment 133. Compared with the traditional motor assembly method, the independent assembly compartment assembly is more stable. At the same time, the first assembly compartment 133 is arranged in the third shell 13, which facilitates the assembly of the fan assembly 2.

[0134] In some embodiments, two opposite sides of the third shell 13 extend towards the first shell 11 or the second shell 12 to form a first insertion edge 131 and a second insertion edge 132, which are respectively inserted into the first side slot 125 and the second side slot 126.

[0135] The first insertion edge 131 and the second insertion edge 132 can improve the stability of the connection of the fan shell 1, and the insertion matching can be quickly assembled, thereby improving the assembly efficiency of the fan shell 1. By extending the side inward to form the insertion edge, the connection between the shells can be realized without increasing additional space, thereby improving the compactness of the fan shell 1.

[0136] In some embodiments, the fan assembly 2 is inserted into the first assembly bin 133, and a buffer sleeve 21 is arranged between the fan assembly 2 and the first assembly bin 133.

[0137] The buffer sleeve 21 in the embodiment is made of silica gel material. However, the material of the buffer sleeve 21 is not limited thereto, and in some embodiments, the buffer sleeve 21 can be made of (not limited to) paper products, cotton and hemp products, and hollow air cushions.

[0138] The buffer sleeve 21 arranged between the fan assembly 2 and the first assembly bin 133 can increase the firmness and stability of the assembly of the fan assembly 2. Meanwhile, the arrangement of the buffer sleeve 21 can buffer and filter the mechanical vibration generated by the fan assembly 2 during operation, reduce the vibration amplitude, and also reduce the working noise of the fan assembly 2.

[0139] In some embodiments, the first insertion edge 131 and the second insertion edge 132 are provided with an insertion slot 137 at the contact position with the first side slot 125 and the second side slot 126, and the insertion slot 137 is arranged on the first side slot 125 and the second side slot 126.

[0140] The insertion slot 137 is arranged on the first insertion edge 131 and the second insertion edge 132, so that when the first insertion edge 131 is connected with the first side slot 125, the insertion slot 137 is inserted into the first side slot 125, and when the second insertion edge 132 is connected with the second side slot 126, the insertion slot 137 is inserted into the second side slot 126. This connection mode can support the first insertion edge 131 and the second insertion edge 132 with the first shell 11 and the second shell 12, so that the first insertion edge 131 and the second insertion edge 132 are prevented from deforming into the fan shell 1 when subjected to external force, thereby making the structure of the fan shell 1 more stable and enhancing the drop resistance.

[0141] In some embodiments, the first assembly compartment 133 is provided with a second assembly compartment 134 on one side, and an assembly slot 135 is formed on the side of the first assembly compartment 133 facing the second assembly compartment 134, and a wire is arranged in the assembly slot 135.

[0142] The second assembly compartment 134 is used for assembling the battery assembly 3. However, the role of the second assembly compartment 134 is not limited to this. In some embodiments, the second assembly compartment 134 is also used for installing other functional devices of the portable fan, such as (but not limited to) control buttons, PCB circuit boards, fixing supports, etc.

[0143] The side of the first assembly compartment 133 facing the second assembly compartment 134 is provided with an assembly slot 135, and the assembly slot 135 can provide a certain deformation space for the first assembly compartment 133, facilitating the assembly of the fan assembly 2. Due to the existence of the deformation space, the fault tolerance of the first assembly compartment 133 to the specification error of the fan assembly 2 is increased, and the assembly efficiency is further improved. At the same time, the assembly slot 135 can also be reused to serve as a wire slot, so that the fan assembly 2 and the battery assembly 3 can be connected by wires, fully utilizing the space in the fan shell 1 and simplifying the layout of the wire.

[0144] In some embodiments, the first insertion edge 131 is provided with a button slot hole 136, and the second insertion edge 132 is provided with a side wall air inlet 151.

[0145] In order to facilitate carrying and holding, the first shell 11 and the second shell 12 of the portable fan in the embodiment are designed to be flat with large length and height and small width. Under this shell structure, it is difficult to assemble control buttons in the first shell 11 and the second shell 12. The button slot hole 136 is arranged on the first insertion edge 131 to facilitate the assembly of the control buttons. The second insertion edge 132 is provided with a side wall air inlet 151, which is arranged on the third shell 13 and does not damage the first shell 11 and the second shell 12, ensuring the integrity and aesthetics of the first shell 11 and the second shell 12.

[0146] In some embodiments, the length of the first insertion edge 131 and the length of the second insertion edge 132 are both greater than the length of the first assembly compartment 133.

[0147] The length of the first insertion edge 131 and the length of the second insertion edge 132 are both greater than the length of the first assembly compartment 133, which fully utilizes the misalignment space formed by the long and short structures, so that the fan assembly 2, the control buttons and other components attached to the second insertion edge 132 can be assembled without affecting each other, improving the assembly efficiency.

[0148] In some embodiments, the fan housing 1 is connected with a clamping structure 4, the clamping structure 4 is arranged outside the first housing 11, and the clamping structure 4 is connected with the third housing 13. The clamping structure 4 is specifically a deformation clamp or a spring clamp. The clamping structure 4 is connected with the third housing 13, so as to avoid that the clamping structure 4 is damaged after being subjected to force and causing damage to the first housing 11 or the second housing 12, and to ensure the aesthetic appearance of the first housing 11 and the second housing 12.

[0149] In the embodiment, the clamping structure 4 is connected with the third housing 13 by a screw 41. However, the connection mode of the clamping structure 4 and the third housing 13 is not limited thereto, and according to different specific application scenarios, in some embodiments, the connection mode of the clamping structure 4 and the third housing 13 can be (but is not limited to) clamping, riveting, adhesive connection, magnetic connection, etc.

[0150] The clamping structure 4 is connected with the third housing 13 by the screw 41, the third housing 13 is provided with a screw hole 42 matched with the screw 41, and the screw 41 is connected with the screw hole 42 through the first housing 11 and the second housing 12. The connection strength and stability of the screw 41 are higher, the clamping structure 4 can bear greater external force, the clamping force is stronger, and the clamping stability is better.

[0151] It should be noted that any one of the embodiments in the present embodiment can be independently implemented, or implemented by being combined with one or more other embodiments. When combined, the combination mode thereof should not be limited to the combination modes listed in the present embodiment.

[0152] Embodiment 3

[0153] Please refer to FIG. 21 and FIG. 22, FIG. 21 is a first perspective view of a portable fan according to the present embodiment, and FIG. 22 is a second perspective view of the portable fan according to the present embodiment.

[0154] As shown in FIG. 21 and FIG. 22, a portable fan comprises: a fan housing 1; a fan assembly 2 arranged in the fan housing 1, and the fan housing 1 is provided with a fan inlet 14 and a fan outlet 15 communicating with the fan assembly 2; the fan inlet 14 comprises a plurality of inlet openings 141, and the plurality of inlet openings 141 are distributed on a plurality of surfaces of the fan housing 1; a mixed flow space is arranged in the fan housing 1, and the mixed flow space is connected with the plurality of inlet openings 141 and the fan assembly 2.

[0155] The fan housing 1 in the embodiment includes a first housing 11, a second housing 12, and a third housing 13, wherein the first housing 11 is sleeved on the second housing 12, and the third housing 13 is inserted into the second housing 12. The fan assembly 2 is connected with the third housing 13, and each air inlet 141 penetrates through the first housing 11 and the second housing 12. However, the structure of the fan housing 1 is not limited thereto, and in some embodiments, the fan housing 1 can be formed by two half housings spliced front and back or up and down according to different specific application scenarios.

[0156] In the embodiment, the motor assembly 3 can be (but is not limited to) a single-phase motor, a two-phase motor, or a three-phase motor.

[0157] The fan air inlet 14 and the fan air outlet 15 are both formed on the surface of the fan housing 1, wherein the number of the fan air outlet 15 is 1. In some embodiments, the fan air inlet 14 is divided into a plurality of fan air outlets, and the number of the fan air outlets can be (but is not limited to) 2, 3, 4, 5, or more.

[0158] The number of the fan air inlets 14 is 3. However, the number of the fan air inlets 14 is not limited thereto, and in some embodiments, the number of the fan air inlets 14 can be (but is not limited to) 2, 4, 5, or more according to different specific application scenarios.

[0159] In some embodiments, the air inlet 141 includes a first air inlet 141a, a second air inlet 141b, and a third air inlet 141c. The first air inlet 141a is formed on the bottom surface of the fan housing 1, and the second air inlet 141b and the third air inlet 141c are formed on the side wall of the fan housing 1.

[0160] A mixing space is formed in the fan housing 1, and the mixing space is located between the fan assembly 2 and the fan housing 1. The mixing space is used to communicate with the plurality of air inlets 141 respectively, so that the air flows entering through different air inlets 141 can be mixed in the mixing space, and the transverse movement kinetic energy of the air flows entering through different air inlets 141 can be eliminated, thereby improving the consistency of the air flow.

[0161] The mixing space in the embodiment can be enclosed by the inner surface of the fan housing 1, or can be enclosed by the inner surface of the fan housing 1 and a partition plate, or can be enclosed by a separate structural member arranged in the fan housing 1. The mixing space is a space for buffering and canceling air flows, and its constituting form is diverse and is not limited to the form exemplified in the specification.

[0162] In the above embodiments, the fan housing 1 of the portable fan is provided with a plurality of air inlet openings 141, and the plurality of air inlet openings 141 are arranged on different surfaces of the fan housing 1. The plurality of air inlet openings 141 can increase the air inlet area of the fan air inlet 14. When the fan assembly 2 is working, negative pressure will be generated at different air inlet openings 141 to guide external airflow into the fan housing 1. Since the negative pressure area is distributed on different surfaces of the fan housing 1, the effect of pressure distribution is achieved, the external airflow flowing into the fan housing 1 is reduced, and the force acting on the fan housing 1 is also reduced, thereby reducing the wind noise when the airflow flows in. At the same time, in order to further reduce the wind noise of the portable fan, the fan housing 1 is provided with a mixing space at the positions corresponding to the plurality of air inlet openings 141. The plurality of air inlet openings 141 are located on different surfaces of the fan housing 1, so that the airflow flowing in from different air inlet openings 141 has different flow directions. When the airflow with different flow directions directly enters the fan assembly 2, it will have a negative effect on the rotation of the fan assembly 2, reduce the working efficiency of the fan assembly 2, and even generate vortex in the fan assembly 2, causing greater wind noise. By setting the mixing space, the airflow with different directions is mixed in the mixing space first, so as to offset the initial direction kinetic energy of the airflow flowing in at different air inlet openings 141. After the initial direction kinetic energy of the airflow in the mixing space is reduced or offset, the consistency of the mixed airflow is enhanced, the negative effect on the fan assembly 2 is greatly reduced, the working efficiency of the fan assembly 2 is improved, and the wind noise of the fan assembly 2 is further reduced.

[0163] In some embodiments, the fan assembly 2 is embedded and fixed in the fan housing 1. Embedding and fixing the motor assembly facilitates assembly and replacement of the motor assembly.

[0164] In some embodiments, the fan assembly 2 is externally provided with a shockproof silica gel sleeve 21. The shockproof silica gel sleeve 21 can effectively buffer the mechanical vibration of the fan assembly 2, increase the friction coefficient of the contact position between the fan assembly 2 and the fan housing 1, and enhance the firmness and stability of the fan assembly 2.

[0165] In some embodiments, the motor assembly is a three-phase motor, which has a higher rotating speed and improves the air outlet rate and air outlet volume of the fan assembly 2. However, the motor assembly is not limited to this. According to different specific application scenarios, in some embodiments, the motor assembly can be a single-phase motor or a two-phase motor.

[0166] In some embodiments, the motor assembly is powered by a battery, and the power supply battery of the motor assembly can be two, three, four or more batteries connected in series.

[0167] In some embodiments, the rated working voltage of the motor assembly is 6-8.4V or 9-12.6V. When the rated working voltage of the motor assembly is 6-8.4V, the motor assembly is powered by two batteries in series, and in this range of rated working voltage, the corresponding rated working current of the motor assembly is 0.1-2.9A, the corresponding rated power of the motor assembly is 0.6-25W, and the rotation speed of the motor assembly is 14000-46000 revolutions per minute.

[0168] When the rated working voltage of the motor assembly is 9-12.6V, the motor assembly is powered by three batteries in series, and in this range of rated working voltage, the corresponding rated working current of the motor assembly is 0.08-2.7A, the corresponding rated power of the motor assembly is 0.7-33W, and the rotation speed of the motor assembly is 14000-48000 revolutions per minute.

[0169] When the motor assembly is a three-phase motor and is powered by a battery, the motor assembly rotating at high speed will generate a larger frequency vibration. Long-term vibration will cause the motor assembly to shift. The flow mixer 4 supports the motor assembly, which fixes and limits the fan assembly 2, making the working environment of the fan assembly 2 more stable.

[0170] Please refer to FIG. 26 and FIG. 27, FIG. 26 is a first view structure diagram of the flow mixer of the embodiment; and FIG. 27 is a second view structure diagram of the flow mixer of the embodiment.

[0171] As shown in FIG. 26 and FIG. 27, in some embodiments, the flow mixer 4 is arranged in the flow mixing space, the flow mixer 4 is connected with the fan shell 1, and the flow mixer 4 respectively communicates with the fan assembly 2 and the plurality of air inlet openings 141.

[0172] The flow mixer 4 is arranged in the flow mixing space, and the flow mixer 4 respectively communicates with the fan assembly 2 and the plurality of air inlet openings 141. After the airflow enters the flow mixer 4 from the plurality of air inlet openings 141, the airflow is subjected to transverse kinetic energy offset and flow mixing. The independently arranged flow mixer 4 is convenient to disassemble and assemble. At the same time, the arrangement of the flow mixer 4 can compress the flow mixing space, reduce the space for airflow flowing in the flow mixing space, and make the flow direction consistency of the airflow after flow mixing better.

[0173] In some embodiments, one end of the flow mixer 4 is connected with the fan shell 1, and the other end of the flow mixer 4 abuts against the fan assembly 2. The one end of the flow mixer 4 is connected with the fan shell 1, and the other end of the flow mixer 4 is connected with the fan assembly 2. The flow mixer 4 arranged between the fan shell 1 and the fan assembly 2 can also support the fan assembly 2, preventing the fan assembly 2 from falling off the fan shell 1.

[0174] In some embodiments, the fan assembly 2 is fixed in the fan housing 1 as an independent modular accessory by interference fit, clamping or screw connection. The fan assembly 2 generates vibration when working, and may be displaced during long-term use. The flow mixer 4 supports and limits the fan assembly 2, so that the connection of the fan assembly 2 is more stable.

[0175] In some embodiments, the flow mixer 4 is annular, and the side wall of the flow mixer 4 communicates with the at least one air inlet opening 141. One end of the flow mixer 4 is in abutment with the fan assembly 2, and the other end of the flow mixer 4 is connected with the fan housing 1 and communicates with the air inlet opening 141 on the bottom surface of the fan housing 1. In order to increase the air inlet efficiency of the portable fan, the air inlet opening 141 is formed on the side wall of the fan housing 1, and the side wall of the flow mixer 4 communicates with the air inlet opening 141 on the side wall of the fan housing 1, so as to guide the airflow at the side wall of the fan housing 1 to flow into the flow mixer 4.

[0176] In some embodiments, a plurality of air inlet windows 41 are formed on the flow mixer 4, and the plurality of air inlet windows 41 correspond to the plurality of air inlet openings 141. The plurality of air inlet openings 141 are formed on the side wall of the fan housing 1, and the plurality of air inlet windows 41 are formed on the side wall of the corresponding flow mixer 4, each air inlet window 41 corresponding to an air inlet opening 141.

[0177] In the embodiment, the number of air inlet openings 141 formed on the side wall of the fan housing 1 is two, but the number of air inlet openings 141 is not limited to this. In some embodiments, the number of air inlet openings 141 formed on the side wall of the fan housing 1 is (not limited to) three, four, five or more, according to different specific application scenarios. The number of air inlet windows 41 formed on the side wall of the corresponding flow mixer 4 is the same as or greater than the number of air inlet openings 141 formed on the side wall of the fan housing 1.

[0178] In some embodiments, the air inlet window 41 includes a first window 411, a second window 412 and a third window 413. The first window 411 is formed on one end of the flow mixer 4 facing the bottom surface of the fan housing 1, and the first window 411 corresponds to the first air inlet opening 141a. The second window 412 and the third window 413 are both formed on the side wall of the flow mixer 4, and the second window 412 and the third window 413 correspond to the second air inlet opening 141b and the third air inlet opening 141c, respectively.

[0179] In some embodiments, the flow mixer 4 and the fan assembly 2 are coaxially stacked.

[0180] In some embodiments, the opening area of each of the plurality of air inlet windows 41 is smaller than the opening area of the corresponding air inlet opening 141. The area of each air inlet window 41 is smaller than the area of the corresponding air inlet opening 141. The air flow is pressurized when passing through the air inlet opening 141 into the air inlet window 41, and the pressurized air flow has high kinetic energy when entering the flow mixer 4, thereby shortening the time for the air flow to enter the fan assembly 2 and improving the air inlet efficiency of the fan assembly 2. Meanwhile, the opening area and position of each air inlet opening 141 are different, and the area of the air inlet window 41 is smaller than the area of the air inlet opening 141, so that the air inlet window 41 can be placed at any position intersecting with the air inlet opening 141 to adjust the flow mixing position of the air flow, and the flow mixing effect of the air flow in different directions in the flow mixer 4 is better.

[0181] In some embodiments, the flow mixer 4 and the fan assembly 2 are coaxially stacked, and the inner diameter of the end portion of the end of the flow mixer 4 and the fan assembly 2 abutting each other is the same as the inner diameter of the fan assembly 2. The flow mixer 4 and the fan assembly 2 are coaxially stacked, and the inner diameters at the abutting positions are also the same. The resistance of the air flow in the flow mixer 4 to the fan assembly 2 is reduced, and the air inlet efficiency of the fan assembly 2 is improved.

[0182] In some embodiments, the portable fan further comprises a battery assembly 3, which is arranged on the two sides of the fan housing 1 separately from the fan assembly 2. The battery assembly 3 and the fan assembly 2 can both serve as counterweights of the portable fan. Arranging the battery assembly 3 and the fan assembly 2 on the two sides of the fan housing 1 can stabilize the center of gravity of the portable fan and prevent the portable fan from deviating.

[0183] In some embodiments, the flow mixer 4 further comprises a partition plate 42 arranged on the side facing the battery assembly 3. Since the motor assembly and the battery assembly 3 are arranged in two cavities in the fan housing 1 respectively, the air flow entering the fan housing 1 flows to the cavity where the battery assembly 3 is arranged, and vortex or whistling noise may be generated due to the vibration of the slits or through holes in the cavity. Arranging the partition plate 42 between the two cavities can effectively prevent the air flow from flowing into the cavities and prevent vortex or whistling noise from being generated between the cavities.

[0184] In some embodiments, the first cavity and the second cavity, the fan assembly 2 is arranged in the first cavity, the battery assembly 3 is arranged in the second cavity, and the partition plate 42 is arranged between the first cavity and the second cavity. Arranging the partition plate 42 between the first cavity and the second cavity can effectively prevent vortex or whistling noise from being generated between the first cavity and the second cavity

[0185] In some embodiments, the end of the mixed-flow device 4 connected with the fan housing 1 comprises a first connecting end 44 and a second connecting end 45; the first connecting end 44 is in abutment with the fan housing 1, and the second connecting end 45 is snap-connected with the fan housing 1. The first connecting end 44 and the second connecting end 45 of the mixed-flow device 4 are respectively in abutment and snap-connected with the fan housing 1. The abutment between the first connecting end 44 and the fan housing 1 can provide a support force for the mixed-flow device 4, which is transmitted to the motor assembly, so as to stabilize the position of the motor assembly and avoid the movement of the motor assembly towards the mixed-flow device 4. The snap-connection between the second connecting end 45 and the fan housing 1 can generate a traction force between the fan housing 1 and the mixed-flow device 4, so as to avoid the displacement of the mixed-flow device 4 towards the fan assembly 2. The fan housing 1 can provide both the support force and the traction force for the mixed-flow device 4 at the same end, so that the mixed-flow device 4 can not only support the fan assembly 2, but also limit the position of the mixed-flow device 4 from being pressed towards the fan assembly 2.

[0186] Please refer to FIG. 24 and FIG. 25, FIG. 24 is a schematic diagram of the second shell structure of the present embodiment; and FIG. 25 is a sectional view of the second shell of the present embodiment.

[0187] As shown in FIG. 24 and FIG. 25, in some embodiments, the fan housing 1 is provided with a support frame 121 at the position of the first connecting end 44, and the first connecting end 44 is in abutment with the support frame 121. The provision of the support frame 121 greatly increases the fault tolerance of the assembly error between the first connecting end 44 and the fan housing 1. When the length of the mixed-flow device 4 is greater than the set length, the mixed-flow device 4 can reach the predetermined position by compressing the height of the support frame 121, thereby facilitating assembly.

[0188] In some embodiments, the second connecting end 45 extends in the direction away from the fan assembly 2 to form a connecting claw 43, and the fan housing 1 is provided with a clamping edge 122 matched with the connecting claw 43.

[0189] Please refer to FIG. 23, which is a sectional view of the portable fan of the present embodiment.

[0190] As shown in FIG. 23, the inner surface or the bottom surface of the fan housing 1 is formed with the clamping edge 122 at the position corresponding to the second connecting end 45. However, the formation of the clamping edge 122 is not limited thereto. In some embodiments, the fan housing 1 is composed of a first shell 11 and a second shell 12, and the bottom surfaces of the first shell 11 and the second shell 12 are provided with openings. The opening area of the first shell 11 is greater than that of the second shell 12, so that the first shell 11 and the second shell 12 are misaligned at the bottom surfaces. The misaligned structure of the second shell 12 is the clamping edge 122.

[0191] In some embodiments, the position where the first connecting end 44 abuts against the support frame 121 is recessed to form a limiting groove 46, and the limiting groove 46 abuts against the support frame 121. The position where the first connecting end 44 abuts against the support frame 121 is recessed to form the limiting groove 46, and the limiting groove 46 can play a limiting role to prevent the mixed-flow device 4 from rotating and shifting in the fan housing 1, thereby ensuring the stability of the placement and connection of the mixed-flow device 4.

[0192] In some embodiments, the fan housing 1 facing the mixed-flow device 4 is protruded to form a plurality of limiting protrusions 123, and the plurality of limiting protrusions 123 abut against the inner wall of the mixed-flow device 4.

[0193] In the embodiment, the number of limiting protrusions 123 is 2. However, the number of limiting protrusions 123 is not limited thereto, and in some embodiments, the number of limiting protrusions 123 can be 3, 4, 5, or more. The number of limiting protrusions 123 can be set according to actual needs, and is not limited to specific embodiments.

[0194] It should be noted that any of the embodiments in the present embodiment can be independently implemented or implemented in combination with one or more other embodiments. When combined, the combination manner should not be limited to the combination manner listed in the present embodiment.

[0195] Embodiment 4

[0196] Please refer to FIG. 28 and FIG. 29, FIG. 28 is a schematic diagram of the overall structure of the portable fan of the present embodiment; and FIG. 29 is a first kind of schematic diagram of the exploded structure of the portable fan of the present embodiment.

[0197] As shown in FIG. 28 and FIG. 29, a portable fan comprises a fan housing 1 and a fan assembly 2. The fan assembly 2 is arranged in the fan housing 1, and the fan housing 1 is provided with a fan inlet and a fan outlet which are communicated with the fan assembly 2; the fan inlet comprises a first inlet 15 which is arranged on the surface of the fan housing 1 facing the body of the wearer.

[0198] The fan housing 1 in the present embodiment comprises a first housing 11, a second housing 12, and a third housing 13, wherein the first housing 11 is sleeved on the second housing 12, and the third housing 13 is inserted into the second housing 12. The fan assembly 2 is connected with the third housing 13, and each inlet is penetrated through the first housing 11 and the second housing 12. However, the structure of the fan housing 1 is not limited thereto, and in some embodiments, the fan housing 1 can be formed by two half housings which are spliced front and back or up and down.

[0199] The fan assembly 2 comprises a fan motor and fan blades. The motor assembly can be, but is not limited to, a single-phase motor, a two-phase motor, or a three-phase motor.

[0200] The first air inlet 15 is formed on the side wall of the fan housing 1 and faces the side of the wearer's body. When the portable fan is worn around the neck by the hanging rope, the first air inlet 15 faces the wearer's chest or abdomen. When the portable fan is clamped on the wearer's clothes or belt by the clamping structure 4, the first air inlet 15 faces different parts of the wearer's body according to the clamping position.

[0201] In the above embodiment, the portable fan forms the first air inlet 15 on the surface of the fan housing 1 facing the side of the wearer's body. When the fan assembly 2 starts to work, the airflow flows from the side of the wearer's body into the fan housing 1. The first air inlet 15 can also accelerate the airflow on the surface of the wearer's body to accelerate the flow, so that the first air inlet 15 plays a role in cooling. The fan air inlet and the fan air outlet can both play a role in cooling and ventilation for the wearer, fully utilize the functions of the fan air inlet and the fan air outlet, improve the cooling efficiency of the portable fan, and maximize the use of the functions of the portable fan.

[0202] In some embodiments, the motor assembly is a three-phase motor, which has a higher rotating speed and improves the air outlet rate and air outlet volume of the fan assembly 2. However, the motor assembly is not limited to this. According to different specific application scenarios, in some embodiments, the motor assembly can be a single-phase motor or a two-phase motor.

[0203] In some embodiments, the fan air inlet further comprises a second air inlet 16 arranged on the bottom surface of the fan housing 1. The second air inlet 16 is formed on the fan housing 1, which increases the air inlet space of the portable fan as a whole, reduces the resistance of the airflow entering the fan housing 1, increases the air intake of the portable fan, and improves the blowing efficiency of the portable fan.

[0204] The second air inlet 16 is arranged at the bottom of the fan housing 1, so that the airflow entering from the first air inlet 15 and the airflow entering from the second air inlet 16 intersect, offset the horizontal movement kinetic energy of the airflow entering from the first air inlet 15, so that the airflow entering from the first air inlet 15 and the second air inlet 16 has the same direction, and the air inlet efficiency of the fan assembly 2 is improved.

[0205] As shown in FIG. 30, in some embodiments, the fan air inlet further comprises: a third air inlet 17, which is formed on the surface adjacent to the first air inlet 15. The third air inlet 17 is formed on the fan housing 1, which increases the air inlet space of the portable fan, reduces the resistance of the airflow entering the fan housing 1, increases the air intake of the portable fan, and improves the blowing efficiency of the portable fan.

[0206] The third air inlet 17 is arranged on the side wall adjacent to the first air inlet 15, which can make the airflow entering from the first air inlet 15 and the airflow entering from the second air inlet 16 vertically intersect, offset the lateral movement kinetic energy of the airflow entering from the first air inlet 15 and the third air inlet 17, weaken the lateral movement kinetic energy of the airflow entering from the first air inlet 15 and the third air inlet 17, and further reduce the lateral movement kinetic energy of the airflow entering from the two directions when entering the fan assembly 2. The airflow is more easily captured and restrained by the fan blades, which improves the air inlet efficiency of the fan assembly 2.

[0207] In some embodiments, the motor assembly is powered by the battery assembly 3, and the battery assembly 3 can supply power to two, three, four or more batteries in series.

[0208] In some embodiments, the rated working voltage of the motor assembly is 6-8.4V or 9-12.6V. When the rated working voltage of the motor assembly is 6-8.4V, the motor assembly is powered by two batteries in series. In this rated working voltage range, the corresponding rated working current of the motor assembly is 0.1-2.9A, the corresponding rated power of the motor assembly is 0.6-25W, and the rotation speed of the motor assembly is 14000-46000 revolutions / minute.

[0209] When the rated working voltage of the motor assembly is 9-12.6V, the motor assembly is powered by three batteries in series. In this rated working voltage range, the corresponding rated working current of the motor assembly is 0.08-2.7A, the corresponding rated power of the motor assembly is 0.7-33W, and the rotation speed of the motor assembly is 14000-48000 revolutions / minute.

[0210] When the motor assembly is a three-phase motor and is powered by a battery, the high-speed rotating motor assembly has an increased demand for air intake of the fan housing 1. Arranging multiple air inlets can improve the air inlet efficiency of the portable fan and avoid the problem of insufficient air intake caused by too small air inlets, thereby improving the air inlet efficiency of the portable fan.

[0211] In some embodiments, along the circumference of the fan housing 1, the fan housing 1 is arc-shapedly contracted from the middle position to both sides, so that the first air inlet 15 is located on at least two cutting surfaces.

[0212] Along the circumference of the fan housing 1, the fan housing 1 is arc-shapedly contracted from the middle position to both sides, so that the fan housing 1 has a whole shuttle-shaped structure with a thicker middle and thinner sides. The shape of the fan housing 1 described above can make the side wall of the fan housing 1 provided with the first air inlet 15 arc-shapedly extend from the middle to both sides. The arc-shaped extension of the side wall inevitably makes the first air inlet 15 provided on the side wall also have an arc-shaped extension. The arc-shaped extension of the first air inlet 15 reduces the area covered by the first air inlet 15 in a single plane, so that the first air inlet 15 is not easily blocked by the wearer, causing poor air intake. For example, when the side wall provided with the first air inlet 15 is a flat plane, when the wearer closely abuts against the side wall, the first air inlet 15 has a greater probability of being completely blocked. When the first air inlet 15 is arc-shaped, the same plane cannot completely cover the arc-shaped surface, so that the first air inlet 15 cannot be completely shielded, ensuring the air intake effect of the first air inlet 15.

[0213] In some embodiments, the first air inlet 15 is provided with a first air inlet fence 151, and the first air inlet fence 151 is provided with a first air inlet hole 152. The second air inlet 16 is provided with a second air inlet fence 161, and the second air inlet fence 161 is provided with a second air inlet hole 162. The opening area of the first air inlet hole 152 is greater than that of the second air inlet hole 162.

[0214] The first air inlet 15 is provided with a first air inlet fence 151. The arrangement of the first air inlet fence 151 can prevent foreign matters from entering the fan housing 1 and damaging the fan assembly 2, and can also prevent the wearer's body parts or clothing from extending into the fan assembly 2, thereby protecting the life and property safety of the wearer.

[0215] Similarly, the second air inlet 16 is provided with a second air inlet fence 161. The arrangement of the second air inlet fence 161 also protects the fan assembly 2 and the life and property safety of the wearer.

[0216] The opening area of the first air inlet hole 152 is greater than that of the second air inlet hole 162. Since the first air inlet 15 faces the side of the wearer's body, the first air inlet 15 has a greater probability of being blocked by foreign matters. By arranging a larger area of the first air inlet hole 152 on the first air inlet fence 151 at the first air inlet 15, the probability of the first air inlet 15 being completely blocked can be reduced, and the air intake efficiency of the first air inlet 15 can be improved. The second air inlet fence 161 is arranged at the second air inlet 16, and the probability of being covered and shielded by foreign matters is much smaller than that of the first air inlet 15. By arranging a smaller area of the second air inlet hole 162, it can prevent even smaller foreign matters from entering the fan housing 1, thereby achieving a better protection effect.

[0217] In some embodiments, the first air inlet 15 is provided with a first air inlet grille 151, the first air inlet grille 151 is provided with a first air inlet hole 152, the third air inlet 17 is provided with a third air inlet grille 171, the third air inlet grille 171 is provided with a third air inlet hole 172, and the opening area of the first air inlet hole 152 is greater than the opening area of the third air inlet hole 172.

[0218] The first air inlet grille 151 is arranged at the first air inlet 15, which can prevent foreign matters from entering the fan housing 1 and damaging the fan assembly 2, and can also prevent the body parts or wearing articles of the wearer from entering the fan assembly 2, thereby protecting the life and property safety of the wearer.

[0219] Similarly, the third air inlet grille 171 is arranged at the third air inlet 17, which also has the effect of protecting the fan assembly 2 and the life and property safety of the wearer.

[0220] The opening area of the first air inlet hole 152 is greater than the opening area of the third air inlet hole 172. Since the first air inlet 15 faces the side of the wearer's body, the probability of the first air inlet 15 being blocked by foreign matters is relatively high. By increasing the area of the first air inlet hole 152 on the first air inlet grille 151 at the first air inlet 15, the probability of the first air inlet 15 being completely blocked can be reduced, and the air inlet efficiency of the first air inlet 15 can be improved. The third air inlet grille 171 is arranged at the third air inlet 17, and the probability of the third air inlet grille 171 being covered and shielded by foreign matters is much smaller than the probability of the first air inlet 15 being shielded. By reducing the area of the third air inlet hole 172, it can prevent smaller foreign matters from entering the fan housing 1, thereby achieving better protection effect.

[0221] In some embodiments, the first air inlet 15 is provided with a first air inlet grille 151, the first air inlet grille 151 is provided with a first air inlet hole 152, the fan housing 1 is provided with a fourth air inlet grille 153 inside the first air inlet 15, the fourth air inlet grille 153 is provided with a fourth air inlet hole 154, and the opening area of the first air inlet hole 152 is greater than the opening area of the fourth air inlet hole 154.

[0222] The first air inlet grille 151 and the fourth air inlet grille 153 are arranged at the first air inlet 15 respectively, and the fourth air inlet grille 153 is arranged on the inner side of the first air inlet grille 151. The two-layer air inlet grilles play a double filtering and protection role for the first air inlet 15. At the same time, since the first air inlet grille 151 directly contacts the body or clothes of the wearer during use, in order to prevent the first air inlet grille 151 from being covered, the area of the first air inlet hole 152 is set to be relatively large, which can reduce the probability of the first air inlet 15 being completely blocked and improve the air inlet efficiency of the first air inlet 15. The area of the first air inlet hole 152 is relatively large, and the filtering effect on small foreign matters is not good, so the fourth air inlet grille 153 is arranged on the inner side of the first air inlet grille 151, the area of the fourth air inlet hole 154 is smaller than that of the first air inlet hole 152, and the fourth air inlet grille 153 can play a good blocking role on smaller foreign matters and improve the protection effect.

[0223] The first air inlet grille 151 and the fourth air inlet grille 153 are arranged at the first air inlet 15 respectively, and the area of the fourth air inlet hole 154 is smaller than that of the first air inlet hole 152, so the wind pressure gradually increases along the direction from the first air inlet hole 152 to the fourth air inlet hole 154. The gradually increasing wind pressure can cause part of the airflow to flow back during the flow process, and the backflow airflow flows towards the wearer, which plays a soft blowing role and improves the cooling effect of the portable fan.

[0224] In some embodiments, the fan shell 1 comprises a first shell 11 and a second shell 12, the first shell 11 is sleeved on the second shell 12, the first air inlet 15 is arranged on the first shell 11 and the second shell 12, and the first air inlet grilles 151 on the first shell 11 and the second shell 12 are aligned with each other.

[0225] The fan shell 1 comprises a first shell 11 and a second shell 12; the second shell 12 plays a supporting role for the first shell 11, so that the fan shell 1 has higher strength. The first shell 11 plays a protection role for the second shell 12, so as to avoid damage to the second shell 12. The first shell 11 and the second shell 12 can also play a double protection role for the fan assembly 2 and other components in the second shell 12, and improve the protection effect of the portable fan on the internal devices.

[0226] The first air inlet grilles 151 are arranged on the first shell 11 and the second shell 12 respectively, and the first air inlet grilles 151 on the first shell 11 and the second shell 12 are aligned with each other, which avoids air resistance when the airflow passes through the first shell 11 and the second shell 12, and improves the air inlet efficiency of the first air inlet 15.

[0227] In some embodiments, the fan housing 1 comprises: a first housing 11, a second housing 12, and a bottom cover plate 14, the first housing 11 is sleeved on the second housing 12, the bottom cover plate 14 is snap-connected with the second housing 12, and the cover edge of the bottom cover plate 14 is in abutment with the first housing 11, and the second air inlet 16 is formed on the bottom cover plate 14, and the second air inlet fence 161 is detachably arranged on the bottom cover plate 14.

[0228] Similarly, the first housing 11 and the second housing 12 have the same beneficial effects as the above technical solutions, and will not be repeated here.

[0229] The bottom cover plate 14 is snap-connected with the second housing 12, and the cover edge of the bottom cover plate 14 is in abutment with the first housing 11, thereby fixing the first housing 11 and the second housing 12, and maintaining the sleeved state of the first housing 11 and the second housing 12, avoiding the disconnection of the first housing 11 and the second housing 12.

[0230] The second air inlet 16 is formed on the bottom cover plate 14, and the second air inlet fence 161 is detachably arranged on the bottom cover plate 14. Specifically, the bottom cover plate 14 is provided with a plug-in groove, and the side edge of the second air inlet fence 161 is bent and plugged into the plug-in groove. However, the connection mode between the second air inlet fence 161 and the bottom cover plate 14 is not limited to this, and according to different specific application scenarios, in some embodiments, the second air inlet fence 161 and the bottom cover plate 14 can be connected by (not limited to) magnetic attraction, screws, clamping, etc.

[0231] The second air inlet fence 161 is detachably connected with the bottom cover plate 14, which facilitates the disassembly and replacement of the damaged second air inlet fence 161. At the same time, it is also convenient to observe and replace the damaged devices inside the fan housing 1.

[0232] In some embodiments, the fan housing 1 comprises: a first housing 11, a second housing 12, and a third housing 13, the first housing 11 is sleeved on the second housing 12, the third housing 13 is plugged into the second housing 12, the first side edge 131 of the third housing 13 is exposed outside the first housing 11 and the second housing 12, and the third air inlet 17 is formed on the first side edge 131.

[0233] In the three-housing structure, the outer housing can protect the inner housing, and the inner housing can support the outer housing. In addition, the three-housing structure is assembled in a modular and independent pre-assembly manner, which improves the assembly efficiency. The plug-in structure can be stably connected without additional fixing structures such as screws.

[0234] The third air inlet 17 is arranged on the first side edge 131 of the third shell 13, which facilitates the opening of the third air inlet 17. Compared with the traditional technical solution of splicing two half shells, when the air inlet is opened on the side edge of the shell, half of the opening needs to be opened on each of the two half shells, and then spliced into a complete opening. However, the third air inlet 17 arranged on the first side edge 131 of the third shell 13 can be directly opened without splicing.

[0235] In some embodiments, the fan shell 1 further comprises a sandwich plate 18, one end of the sandwich plate 18 is inserted and connected to the third shell 13, and the other end of the sandwich plate 18 is clamped with the first shell 11 and the second shell 12, the third air inlet 17 is arranged on the first side edge 131 and the sandwich plate 18 respectively, the edge of the third air inlet grille 171 is arranged between the sandwich plate 18 and the first side edge 131, and part of the structure of the third air inlet grille 171 is inserted into the third air inlet 17 of the first side edge 131.

[0236] The arrangement of the sandwich plate 18 can make the connection of the first side edge 131 of the third shell 13 and the first shell 11 and the second shell 12 more stable. The edge of the third air inlet grille 171 is clamped and arranged between the sandwich plate 18 and the first side edge 131, which can prevent the third air inlet grille 171 from falling inward or outward, making the connection of the third air inlet grille 171 more stable. Part of the structure of the third air inlet grille 171 is inserted into the third air inlet 17 of the first side edge 131, which makes the overall surface of the fan shell 1 smooth, avoids vortex at the concave position when the shell has a fault, affects the air inlet efficiency, and generates vortex noise when the air flow speed is fast. Therefore, part of the structure of the third air inlet grille 171 is inserted into the third air inlet 17 of the first side edge 131, which has the effects of improving the air inlet efficiency and reducing the air inlet noise.

[0237] In some embodiments, the third shell 13 is provided with an assembly cavity, the fan assembly 2 is arranged in the assembly cavity by fastening and fitting, a buffer sleeve 21 is arranged between the assembly cavity and the fan assembly 2, and the assembly cavity is provided with a deformation notch.

[0238] The fan assembly 2 is arranged in the assembly cavity by fastening and fitting, so that the fan assembly 2 is used as a modular accessory for assembly. This can improve the assembly efficiency of the fan assembly 2, and also facilitates timely replacement of the fan assembly 2 when the fan assembly 2 is damaged.

[0239] The buffer sleeve 21 arranged between the assembly cavity and the fan assembly 2 can reduce the vibration generated by the fan assembly 2 during operation and transmitted to the fan shell 1, thereby reducing the abnormal vibration and noise of the portable fan.

[0240] The assembly cavity is provided with a deformation gap, so that the space of the assembly cavity becomes a variable space under the action of an external force, facilitating the assembly of the fan assembly 2 into the assembly cavity. At the same time, it is also convenient to take out the fan assembly 2 from the assembly cavity.

[0241] In some embodiments, the fan housing 1 is provided with a plug-in part at a position below the second air inlet 16, the fourth air inlet grille 153 is connected with the plug-in part, and a flow mixer 5 is further arranged in the fan housing 1. The flow mixer 5 is respectively communicated with the first air inlet 15, the second air inlet 16 and the third air inlet 17, and part of the structure of the flow mixer 5 is arranged to abut on the plug-in part.

[0242] The flow mixer 5 is arranged in the fan housing 1, and the flow mixer 5 is respectively communicated with the fan assembly 2 and the plurality of air inlets. After the airflow enters the flow mixer 5 from the plurality of air inlets, the airflow is subjected to transverse kinetic energy offset and flow mixing, thereby improving the efficiency of the airflow entering the fan assembly 2. The independently arranged flow mixer 5 is convenient to disassemble and assemble. At the same time, the arrangement of the flow mixer 5 can compress the flow mixing space, reduce the space for airflow flow in the flow mixing space, and make the flow direction consistency of the airflow after flow mixing better.

[0243] Embodiment 5

[0244] Please refer to FIG. 31 and FIG. 32, FIG. 31 is a schematic diagram of the overall structure of the clamping fan of the embodiment; and FIG. 32 is a schematic diagram of the sectional view of the portable fan of the embodiment.

[0245] As shown in FIG. 31 and FIG. 32, a portable fan includes a fan housing 1, a fan assembly 2, an air inlet 11 and an air outlet 12 communicated with the fan assembly 2, a plurality of first static blades 24 arranged in the fan assembly 2 or on an assembly seat 16 connected with the fan assembly 2, and a plurality of second static blades 151 arranged at the position of the air outlet 12 of the fan housing 1.

[0246] In the embodiment, the portable fan can be (but not limited to) a neck-hung fan, a waist-hung fan, a handheld fan, a table-top fan or a wearable fan.

[0247] The fan housing 1 in the embodiment includes a first housing 13, a second housing 14 and a third housing 15, wherein the first housing 13 is sleeved on the second housing 14, and the third housing 15 is plugged into the second housing 14. The fan assembly 2 is connected with the third housing 15, and each air inlet penetrates through the first housing 13 and the second housing 14. However, the structure of the fan housing 1 is not limited thereto, and in some embodiments, the fan housing 1 can be formed by two half housings spliced front and back or up and down.

[0248] The fan assembly 2 comprises a fan motor 22 and fan blades 23. The motor assembly can be, but is not limited to, a single-phase motor, a two-phase motor or a three-phase motor. The fan assembly 2 can be in the form of an outer rotor or an inner rotor.

[0249] In this embodiment, the fan assembly 2 is in a modular structure. Specifically, as shown in FIG. 36, the fan assembly 2 comprises a motor housing 21, a fan motor 22 and fan blades 23, the fan motor 22 and the fan blades 23 are arranged in the motor housing 21, and a plurality of first vanes 24 are also arranged in the motor housing 21. However, the structure of the fan assembly 2 is not limited thereto, and according to different specific application scenarios, as shown in FIG. 37, in some embodiments, the fan assembly 2 comprises a fan motor 22 and fan blades 23. A mounting seat 16 is arranged in the fan housing 1, the fan motor 22 is connected to the mounting seat 16, the fan blades 23 are connected to the fan motor 22, and a plurality of first vanes 24 are connected between the fan housing 1 and the mounting seat 16.

[0250] In this embodiment, the number of first vanes 24 is (but not limited to) 2, 3, 4, 5, 6, 7 or more.

[0251] In this embodiment, the number of second vanes 151 is (but not limited to) 2, 3, 4, 5, 6, 7 or more.

[0252] It should be noted that in some embodiments, one of the plurality of first vanes 24 is also used as a wiring structure to provide a container for a wire. Due to the need for wiring, the first vane 24 has a larger volume and loses some features of the first vane 24 in this embodiment. When the vane loses all the features of the first vane 24 determined in this embodiment, the vane does not belong to the first vane 24 defined in this embodiment. When the vane has some or all features of the first vane 24, the vane is defined as belonging to the first vane 24 in the embodiment with the corresponding features.

[0253] In some embodiments, one of the plurality of second vanes 151 is also used as a wiring structure to provide a container for a wire. Whether it belongs to the second vane 151 referred to in this embodiment should be determined in the manner of the first vane 24 described above. This will not be repeated here.

[0254] In the above embodiments, by arranging the first static blades 24 inside the fan assembly 2 or on the assembly seat 16, and arranging the second static blades 151 at the air outlet 12 of the fan housing 1, a two-stage static blade structure is formed. The two-stage static blade design can effectively guide and straighten the airflow. The first static blades 24 can preliminarily comb the airflow generated by the fan assembly 2, reduce the turbulence and vortex of the airflow, and make it flow more smoothly to the air outlet 12; the second static blades 151 further optimize the direction and velocity distribution of the airflow at the air outlet 12, ensuring that the airflow can be discharged in a more uniform and stable state. This two-stage guiding mechanism significantly improves the flow efficiency of the airflow, avoiding disordered collision and energy loss of the airflow in the housing. The airflow path optimized by the two-stage static blades greatly improves the air outlet efficiency of the fan, which can output stronger wind power under the same energy consumption. At the same time, the two-stage static blades can effectively reduce the turbulence phenomenon of the airflow, significantly reduce the noise level during fan operation, and provide users with a more quiet and comfortable use experience.

[0255] Referring to FIGS. 33 and 34, FIG. 33 is a partially exploded schematic view of the portable fan of the present embodiment; and FIG. 34 is a top view of the portable fan of the present embodiment.

[0256] As shown in FIGS. 33 and 34, in some embodiments, the plurality of first static blades 24 and the plurality of second static blades 151 are arranged in an interlaced manner.

[0257] The two groups of static blades are arranged in a non-parallel interlaced manner in three-dimensional space, forming two-stage flow guiding interfaces. The plurality of first static blades 24 and the plurality of second static blades 151 respectively divide the airflow channel into a plurality of micro flow channels in the axial dimension. Since the plurality of first static blades 24 and the plurality of second static blades 151 are arranged in an interlaced manner, the micro flow channels formed by them are also arranged in an interlaced manner. For the micro flow channels formed by the second static blades 151, they can receive the airflow delivered by the micro flow channels formed by two or more first static blades 24. This structure forces the airflow to change direction twice, similar to the flow splitting principle of the honeycomb structure. By limiting the degree of freedom of the airflow, the velocity field is homogenized. The first-stage blades and the second-stage blades are located in different axial planes, forming an orthogonal flow guiding network. From the axial wind direction, the airflow is more finely divided, but without reducing the space for airflow flow, increasing the airflow velocity, causing the wind pressure to drop sharply, forming a wind blade that makes the user uncomfortable. The above structure can achieve two-stage division of the axial airflow without reducing the airflow wind pressure, making the airflow velocity more uniform, and the airflow covering a wider area after blowing out, perfectly solving the problems of small size, close distance to the human body, concentrated blowing position, and small coverage area caused by too fast flow velocity of the portable fan.

[0258] In some embodiments, the opposite ends of the first plurality of stationary vanes 24 and the second plurality of stationary vanes 151 are aligned with each other.

[0259] The second plurality of stationary vanes 151 extends axially from the first plurality of stationary vanes 24, and the ends of the two are aligned to form a continuous flow channel. After the airflow is initially rectified by the first plurality of stationary vanes 24, the airflow is guided again by the axially extending second plurality of stationary vanes 151 to form a longer flow-stabilizing path. Compared with the traditional single-stage stationary vane structure, the airflow has a longer flow time in the flow path, a more sufficient momentum exchange, and less spiral kinetic energy of the airflow flow, and the blowing effect is better.

[0260] In some embodiments, the number of the second plurality of stationary vanes 151 is less than or equal to the number of the first plurality of stationary vanes 24.

[0261] When the opposite ends of the first plurality of stationary vanes 24 and the second plurality of stationary vanes 151 are aligned with each other, the number of the second plurality of stationary vanes 151 is equal to the number of the first plurality of stationary vanes 24.

[0262] When the first plurality of stationary vanes 24 and the second plurality of stationary vanes 151 are staggered with each other, the number of the second plurality of stationary vanes 151 is less than or equal to the number of the first plurality of stationary vanes 24.

[0263] When the number of the second plurality of stationary vanes 151 is equal to the number of the first plurality of stationary vanes 24, the flow space does not decrease due to the change of position when the airflow flows from the position where the first plurality of stationary vanes 24 is located to the position where the second plurality of stationary vanes 151 is located, and the airflow flows more stably. When the airflow sequentially passes through the two groups of vanes, the velocity field and the pressure field are precisely coupled.

[0264] When the number of the second plurality of stationary vanes 151 is less than the number of the first plurality of stationary vanes 24, the flow space becomes larger when the airflow flows from the position where the first plurality of stationary vanes 24 is located to the position where the second plurality of stationary vanes 151 is located. The position where the second plurality of stationary vanes 151 is located releases the pressure of the airflow, reduces the pressure received by the airflow, increases the pressure of the airflow itself, reduces the flow rate of the airflow, enhances the diffusion ability of the airflow, and covers a wider range. Further, the portable fan has the disadvantages of small size, close distance to the human body, concentrated blowing position, and small coverage range due to the fast flow rate.

[0265] In some embodiments, each of the first plurality of stationary vanes 24 extends along the inner surface of the fan housing 1 in a curved manner, the curved direction of the first plurality of stationary vanes 24 is opposite to the rotating direction of the fan blades 23 of the fan assembly 2, and the curvature of the first plurality of stationary vanes 24 is greater than the curvature of the second plurality of stationary vanes 151.

[0266] The bending direction of the first stationary vane 24 is opposite to the rotating direction of the fan blade 23 in the embodiment, which means that the bending direction of the first stationary vane 24 is opposite to the rotating direction of the fan blade 23, and is not limited to the specific embodiment that the bending direction of the first stationary vane 24 is 180° opposite to the rotating direction of the fan blade 23. In some embodiments, the bending extension line of the first stationary vane 24 is an obtuse angle to the rotating direction of the fan blade 23, which is also within the scope of the embodiment.

[0267] The bending direction of the first stationary vane 24 is opposite to the rotating direction of the fan blade 23, and when the fan blade 23 rotates, the airflow rotates in the same direction. At this time, the bending direction of the first stationary vane 24 is opposite to the rotating direction of the airflow, and when the airflow rotates, it collides with the bending part of the first stationary vane 24. Since the directions are opposite, the included angle between the airflow and the bending part of the first stationary vane 24 when they contact is greater than 90 degrees. The airflow contacts the first stationary vane 24 at a large angle, which can reduce the kinetic energy loss of the airflow contacting the first stationary vane 24. During the large-angle contact process, the guiding effect of the first stationary vane 24 on the airflow is obvious, and the energy loss is small, which greatly improves the outflow efficiency.

[0268] The first stationary vane 24 is curved and extends along the shell, and the bending direction is opposite to the rotating direction of the fan blade. This design converts the outward centrifugal airflow generated by the rotation of the fan blade into axial thrust through the centrifugal force compensation effect. The high-curvature vane increases the contact arc length of the airflow and the vane, and accelerates the decay of the rotational flow through frictional shear effect. The second stationary vane 151 adopts a low-curvature design to form a gentle flow guiding path. Its effect is similar to a "rotational flow filter", which performs secondary guidance on the airflow that has been preliminarily straightened, and suppresses the further development of residual rotational flow. The two-stage stationary vane, the first stationary vane 24 realizes the guidance and energy conversion of the airflow, and the second stationary vane 151 stabilizes the airflow after energy conversion. Finally, the outflowing airflow has stable directional projection capability, and the air supply capacity is enhanced.

[0269] In some embodiments, the plurality of second stationary vanes 151 are straightly arranged along the direction from the air inlet 11 to the air outlet 12.

[0270] The second stationary vane 151 is straightly arranged, that is, the curvature of the second stationary vane 151 is 0. The straight vane extends along the direction from the air inlet 11 to the air outlet 12 as a vector guide to straighten the quasi-axial airflow after the first-stage processing, and ensures that the kinetic energy is output along the shortest path.

[0271] It should be pointed out that the curvature of the second stationary vane 151 is not limited to 0. In some embodiments, the curvature of the second stationary vane 151 is between 0 and the curvature of the first stationary vane 24.

[0272] In some embodiments, each of the plurality of second stationary vanes 151 is provided with a first end portion 151a and a second end portion 151b along the direction from the air inlet 11 to the air outlet 12, the width of the first end portion 151a is smaller than the width of the second end portion 151b, so that the air outlet 12 forms a pressure relief area.

[0273] The second stationary vane 151 adopts a diverging variable cross-section design (the width of the first end portion 151a is smaller than the width of the second end portion 151b), forming a gradient pressure relief channel at the air outlet 12. When the airflow passes through the gradually widening flow channel, it follows the pressure-velocity conversion rule in fluid mechanics, and the high-speed airflow automatically slows down and spreads laterally in the expansion section. The pressure relief area promotes the airflow to spread along the width of the vane, forming a fan-shaped coverage flow field, effectively expanding the effective blowing angle. The negative pressure adsorption effect formed by the diverging vane converts part of the axial kinetic energy into lateral momentum, breaking the traditional straight vane single-direction airflow injection mode. This makes the airflow cover a wider range, and further solves the problem of small portable fan size, close distance to the human body, concentrated blowing position after too fast airflow, and small coverage range.

[0274] In some embodiments, the fan housing 1 comprises a first housing 13 and a second housing 14, the first housing 13 is sleeved on the second housing 14, and the air inlet 11 is arranged on the second housing 14.

[0275] The fan housing 1 is provided as a first housing 13 and a second housing 14, and the first housing 13 is sleeved on the second housing 14. This connection structure forms a double-layer structure at the sleeving position of the first housing 13 and the second housing 14. The second housing 14 is wrapped by the first housing 13, so that the connection area between the first housing 13 and the second housing 14 is larger and the connection relationship is more stable. At the same time, the double-layer housing structure has stronger anti-falling and protection performance, and can better protect the internal functional devices such as the fan motor 22.

[0276] In some embodiments, the first housing 13 is made of transparent or translucent material.

[0277] In some embodiments, the first housing 13 is made of transparent or translucent material. The material of the first housing 13 includes (but is not limited to) polystyrene, polymethyl methacrylate, polycarbonate, polyethylene terephthalate, transparent nylon, AS (acryl-styrene copolymer) and other plastic transparent materials; tempered glass; quartz, artificial optical crystal; sapphire.

[0278] The first shell 13 is made of transparent or semi-transparent material, so that the overall appearance of the fan shell 1 presents an external transparent state, greatly improving the aesthetics of the portable fan. The first shell 13 forms a physical barrier through the sleeve structure, which can effectively block the direct damage of external dust, liquid splashing or mechanical collision to the second shell 14. At the same time, the first shell 13 can also reduce the oxidation effect of ultraviolet radiation on the material of the second shell 14, prolonging its color stability. The transparent or semi-transparent material allows the color or texture of the second shell 14 to be presented through the first shell 13, forming a visual level. For example, if the second shell 14 uses a metallic color or gradient coating, it can remain bright for a long time under the protection of the first shell 13, avoiding discoloration or wear caused by direct exposure.

[0279] In some embodiments, the transparent shell itself can be processed by sanding, polishing, ribbing, anti-slip, partial hollowing, etc. to improve the texture and meet the aesthetic needs of different users.

[0280] In some embodiments, the inner surface of the first shell 13 and / or the outer surface of the second shell 14 is provided with identification information.

[0281] The identification information includes specific fonts or patterns with a marking effect, such as trademarks, logos, product names, etc., as well as pictures, gradient layers, decals, mirrors, etc. with a decorative effect.

[0282] The identification information is set on the inner surface of the first shell 13, the outer surface of the second shell 14, or the inner surface of the first shell 13 and the outer surface of the second shell 14 by processes such as electroplating, spraying, pasting, painting, etc.

[0283] The identification information is set on the inner surface of the first shell 13, the outer surface of the second shell 14, or the inner surface of the first shell 13 and the outer surface of the second shell 14. Since the relative positions of the first shell 13 and the second shell 14 do not change, the first shell 13 protects the identification information from being damaged or worn out by external forces during daily use, allowing the identification information to be maintained for a long time. At the same time, the first shell 13 is made of transparent or semi-transparent material, allowing the user to observe the identification information through the first shell 13, further improving the aesthetics of the portable fan.

[0284] In some embodiments, by means of the thickness and transparent or semi-transparent effect of the first shell 13, the identification information is set on the outer surface of the first shell 13 and the inner surface of the first shell 13 and / or the outer surface of the second shell 14 simultaneously, forming a level of detail. For example, a 3D picture effect is formed.

[0285] In some embodiments, a light strip is arranged on the first shell 13 or the second shell 14. The light strip is electrically connected to the battery in the portable fan through the second shell 1412. The arrangement of the light strip can enable the portable fan to have the function of lighting. Meanwhile, in the night environment, the light strip can make the identification information more beautiful after emitting light, and improve the aesthetic degree of the portable fan.

[0286] In some embodiments, sand, sequins, water, and vegetable oil, etc. can be arranged between the first shell 13 and the second shell 14. This is used to improve the aesthetic degree of the portable fan shell 1.

[0287] Please refer to FIG. 35, which is a structural schematic diagram of the third shell according to the present embodiment.

[0288] As shown in FIG. 35, in some embodiments, the fan shell 1 further comprises a third shell 15, the third shell 15 is inserted into the second shell 14, the air outlet 12 is arranged on the third shell 15, and a plurality of second static blades 151 are arranged on the third shell 15.

[0289] The connection mode of the third shell 15 and the second shell 14 (not limited to) is one or a combination of a plurality of connection modes such as interference fit, buckle connection, screw connection, and adhesive connection.

[0290] The third shell 15 is arranged to enable the third shell 15 to assemble the functional devices of the portable fan, which include (not limited to) switches, displays, fan assemblies 2, battery assemblies, or PCB circuit boards, etc. The arrangement of the third shell 15 can enable some functional devices to be pre-assembled in the third shell 15, and then the third shell 15 and the second shell 14 are assembled. This avoids directly assembling the functional devices in the second shell 14, and reduces the assembly difficulty.

[0291] The arrangement of the third shell 15 can also support the second shell 14 and the first shell 13, so that the fan shell 1 has stronger anti-extrusion and anti-falling capabilities. The assembly structure of the three shells can not only improve the physical resistance of the fan shell 1, but also have the function of improving the aesthetic degree.

[0292] In some embodiments, the third shell 15 can be simplified as a cover plate, which is arranged on the second shell 14, and only the part for connecting with the second shell 14 is inserted into the second shell 14.

[0293] In the present embodiment, the insertion of the third shell 15 into the second shell 14 means that at least part of the structure of the third shell 15 extends into the second shell 14.

[0294] It should be noted that any of the embodiments in the present embodiment can be independently implemented, or implemented in combination with one or more other embodiments. When implemented in combination, the combination manner should not be limited to the combination manners listed in the present embodiment.

[0295] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but the present application can be implemented in many different forms, and is not limited to the embodiments described in the specification. These embodiments are not additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Furthermore, the above technical features continue to be combined with each other, forming various embodiments not listed above, which are all considered to be within the scope of the present application. Furthermore, for those skilled in the art, improvements or changes can be made based on the above description, and all these improvements and changes should be within the protection scope of the appended claims of the present application.

Claims

1. A portable fan, wherein, include: Fan housing; A fan assembly is disposed within the fan housing, and the fan housing has a fan inlet and a fan outlet communicating with the fan assembly. The fan housing includes a first housing and a second housing, wherein the first housing is fitted onto the second housing.

2. The portable fan of claim 1, wherein, The first housing is made of a transparent or translucent material; and / or, Identification information is provided on the inner surface of the first housing and / or the outer surface of the second housing; and / or, A light strip is provided on the first housing or the second housing.

3. The portable fan of claim 1, wherein, The fan housing further includes a third housing, which is inserted into the second housing.

4. The portable fan of claim 3, wherein, The inner surface of the second housing is provided with a first fastening element, and the outer surface of the third housing is provided with a second fastening element that cooperates with the first fastening element; and / or, The bottom surface of the first housing has a first opening, and a bottom cover plate is provided at the first opening. The bottom cover plate is connected to the second housing, and the bottom cover plate abuts against the first housing.

5. The portable fan of claim 4, wherein, The first housing covers the corresponding position of the first fastener to limit the deformation space of the first fastener; And / or, A third fastener is provided on the bottom cover plate, and a slot is provided on the second housing to cooperate with the third fastener. The third fastener is fastened to the slot and / or the edge of the second housing; and / or, The second housing has a second opening, which communicates with the first opening, and the opening area of ​​the second opening is smaller than the opening area of ​​the first opening; And / or, The first fastener consists of multiple claws, with any one claw forming a triangular stable structure with its two adjacent claws. The second fastener consists of multiple slots, with any one slot forming a triangular stable structure with its two adjacent slots.

6. The portable fan of claim 3, wherein, The first and second housings have a first side groove and a second side groove respectively on their two opposite sides, and at least a portion of the structure of the third housing is inserted into the first and second side grooves.

7. The portable fan of claim 6, wherein, The third housing contains a first assembly compartment, and the fan assembly is disposed within the first assembly compartment; and / or, The two opposite sides of the third housing extend toward the first housing or the second housing to form a first insertion edge and a second insertion edge, which are respectively inserted into the first side groove and the second side groove.

8. The portable fan of claim 7, wherein, The fan assembly is inserted into the first assembly compartment, and a buffer sleeve is provided between the fan assembly and the first assembly compartment; and / or, The first and second insertion edges are provided with insertion slots at their contact points with the first and second side grooves, and the insertion slots straddle the first and second side grooves; and / or, A second assembly compartment is provided on one side of the first assembly compartment. An assembly slot is formed on the side of the first assembly compartment facing the second assembly compartment, and a wire is threaded through the assembly slot; and / or, The first plug-in side has a button slot, and the second plug-in side has a side wall air inlet; and / or, The lengths of both the first and second insertion edges are greater than the length of the first assembly compartment.

9. The portable fan of claim 3, wherein, The fan shell is provided with a clamping structure outside the first shell, and the clamping structure is connected with the third shell.

10. The portable fan of claim 9, wherein, The clamping structure is connected with the third shell through a screw, the third shell is provided with a screw hole matched with the screw, and the screw is connected with the screw hole through the first shell and the second shell.

11. The portable fan of claim 1, wherein, A battery assembly is arranged in the fan shell, and the battery assembly is electrically connected with the fan assembly. A clamping structure is arranged on the fan shell. The fan assembly and the battery assembly are arranged on two sides of the clamping structure.

12. The portable fan of claim 11, wherein, The fan inlet comprises a plurality of inlets, and a flow mixer is arranged in the fan shell and is communicated with the fan assembly and the plurality of inlets respectively.

13. The portable fan of claim 12, wherein, One end of the flow mixer is connected with the fan shell, and the other end of the flow mixer is in abutment with the fan assembly.

14. The portable fan of claim 12, wherein, A plurality of air inlet windows are arranged on the flow mixer, and the plurality of air inlet windows correspond to the plurality of inlets respectively.

15. The portable fan of claim 12, wherein, The flow mixer further comprises a partition plate arranged on one side facing the battery assembly.

16. The portable fan of claim 1, wherein, A pressurizing seat is arranged in the fan shell, the pressurizing seat is connected with the fan shell through a plurality of first stationary vanes, and one end of the pressurizing seat connected with the fan assembly is arranged at the fan outlet.

17. The portable fan of claim 16, wherein, Along the air outlet direction of the fan outlet, the distance between the pressurizing seat and the fan shell gradually decreases first and then gradually increases; and / or, The fan assembly comprises an assembly seat and a motor shell, the assembly seat is connected with the motor shell through a plurality of second stationary vanes, and the motor shell is connected with the fan shell.

18. The portable fan of claim 17, wherein, The pressurizing seat is arranged correspondingly with the assembly seat, and there is a gap between the pressurizing seat and the assembly seat.

19. The portable fan of claim 17, wherein, The fan assembly comprises a first PCB circuit board, and the first PCB circuit board is connected with the assembly seat through clamping.

20. The portable fan of claim 17, wherein, A first ventilation hole is arranged on the first PCB circuit board.

Images