Fan assembly, fan head, and portable fan

Abstract

A fan assembly, used to be mounted in a fan housing, includes a first air guide portion arranged in an air outlet of the fan housing; a fan wheel arranged on an end of the first air guide portion away from the air outlet; and a second air guide portion arranged between the first air guide portion and the fan wheel. An air outlet direction of the fan wheel at least partially overlaps with an air inlet direction of the second air guide portion, and an outlet direction of the second air guide portion is set at an angle with an inlet direction of the first air guide portion, the fan assembly is used to guide the air blown out by the fan wheel through the second air guide portion to reduce the airflow directly blowing to the first air guide portion.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims a priority of Chinese patent application CN 202423197590X, filed on December 24, 2024, the entire disclosures of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to fan technology, particularly to a fan assembly, fan head, and portable fan.BACKGROUND

[0003] Currently, most portable fans on the market simply enclose the fan blades in the center of a frame, driving them to rotate for air delivery. This structure results in chaotic airflow direction, where different air directions interfere with each other during movement, creating resistance and reducing efficiency. Additionally, after the air blows from the blades, due to varying directions and a large movement area, it tends to disperse over short distances, leading to scattered airflow, insufficient air force, and a poor user experience.

[0004] Therefore, how to develop a portable fan that improves airflow efficiency, delivers concentrated air, and enhances user experience is an urgent issue that professionals in this field need to address.SUMMARY

[0005] To overcome the shortcomings of the prior art, the following technical solution is provided.

[0006] A fan assembly, used to be mounted in a fan housing, includes a first air guide portion arranged in an air outlet of the fan housing; a fan wheel arranged on an end of the first air guide portion away from the air outlet; and a second air guide portion arranged between the first air guide portion and the fan wheel. An air outlet direction of the fan wheel at least partially overlaps with an air inlet direction of the second air guide portion, and an outlet direction of the second air guide portion is set at an angle with an inlet direction of the first air guide portion, the fan assembly is used to guide the air blown out by the fan wheel through the second air guide portion to reduce the airflow directly blowing to the first air guide portion.

[0007] Compared with existing technologies, the fan assembly, fan head, and portable fan of the present invention have the following beneficial effects: by setting a second air guide portion between the first air guide portion and the fan wheel, the air outlet direction of the fan wheel is at least partially overlapped with the air inlet direction of the second air guide portion, and at the same time, the air outlet direction of the second air guide portion forms an angle with the air inlet direction of the first air guide portion, which can effectively guide the air direction blown out by the fan wheel through the second air guide portion, avoiding airflow directly blowing to the first air guide portion to cause reverse resistance air, thereby reducing energy loss, improving air efficiency, and increasing air power to enhance user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present disclosure. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

[0009] FIG. 1 is a schematic view of a portable fan according to an embodiment of the present disclosure.

[0010] FIG. 2 is another schematic view of the portable fan according to an embodiment of the present disclosure.

[0011] FIG. 3 is an exploded view of the portable fan according to an embodiment of the present disclosure.

[0012] FIG. 4 is another exploded view of the portable fan according to an embodiment of the present disclosure.

[0013] FIG. 5 is a partial structure of a fan assembly according to an embodiment of the present disclosure.

[0014] FIG. 6 is a schematic view of a fan assembly according to an embodiment of the present disclosure.

[0015] FIG. 7 is another schematic view of a fan assembly according to an embodiment of the present disclosure.

[0016] FIG. 8 is an exploded view of the fan assembly according to an embodiment of the present disclosure.

[0017] FIG. 9 is an enlarged view of A part of FIG. 8.

[0018] FIG. 10 is an enlarged view of B part of FIG. 8.

[0019] FIG. 11 is another exploded view of the fan assembly according to an embodiment of the present disclosure.

[0020] FIG. 12 is an enlarged view of C part of FIG. 11.

[0021] FIG. 13 is further another exploded view of the fan assembly according to an embodiment of the present disclosure.

[0022] FIG. 14 is an enlarged view of D part of FIG. 13.

[0023] FIG. 15 is a cross sectional view of the fan assembly according to an embodiment of the present disclosure.

[0024] FIG. 16 is another cross sectional view of the fan assembly according to an embodiment of the present disclosure.

[0025] FIG. 17 is a schematic view of a fan head according to an embodiment of the present disclosure.

[0026] FIG. 18 is another schematic view of a fan head according to an embodiment of the present disclosure.

[0027] FIG. 19 is an exploded view of the fan head according to an embodiment of the present disclosure.

[0028] FIG. 20 is another exploded view of the fan head according to an embodiment of the present disclosure.

[0029] FIG. 21 is a cross sectional view of the fan head according to an embodiment of the present disclosure.

[0030] FIG. 22 is further another schematic view of the portable fan according to an embodiment of the present disclosure.

[0031] FIG. 23 is still further another schematic view of the portable fan according to an embodiment of the present disclosure.

[0032] FIG. 24 is an exploded view of the portable fan according to an embodiment of the present disclosure.

[0033] FIG. 25 is an enlarged view of E part of FIG. 24.

[0034] FIG. 26 is another exploded view of the portable fan according to an embodiment of the present disclosure.

[0035] FIG. 27 is further another exploded view of the portable fan according to an embodiment of the present disclosure.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary skilled persons in the art without creative labor are within the scope of protection of the present invention.

[0037] Referring to FIG. 1 to FIG. 27, the present invention provides a fan assembly 13, which is disposed inside the fan housing 11 and includes a first air guide portion 131, a second air guide portion 132, and a fan wheel 133. The first air guide portion 131 is arranged at an air outlet b of the fan housing 11, the fan wheel 133 is positioned at the end of the first air guide portion 131 away from the air outlet b, and the second air guide portion 132 is located between the first air guide portion 131 and the fan wheel 133. The airflow direction of the fan wheel 133 partially or entirely overlaps with an air inlet direction of the second air guide portion 132, while the airflow direction of the second air guide portion 132 forms an angle d with the air inlet direction of the first air guide portion 131. The fan assembly 13 is designed to redirect the airflow blown by the fan wheel 133 through the second air guide portion 132, thereby reducing the airflow directly blowing to the first air guide portion (131).

[0038] Specially, the rotation of the fan wheel 133 draws air into the fan assembly 13 and generates an airflow. The airflow is directed towards the second air guide portion 132, and the direction of the airflow is changed after being guided by the second air guide portion 132. The airflow, which has been changed in direction by the second air guide portion 132, is blown towards the first air guide portion 131 and then blown out from the air outlet b after passing through the first air guide portion 131, in this way, avoiding airflow directly blowing to the first air guide portion 131 to cause reverse resistance air, thereby reducing energy loss, improving air efficiency, and increasing air power to enhance user experience.

[0039] In present embodiment, the second air guide portion 132 is provided between the first air guide portion 131 and the fan wheel 133, and the air outlet direction of the fan wheel 133 is set to completely overlap (i.e., coincide) with the air inlet direction of the second air guide portion 132. When the air outlet direction of the fan wheel 133 and the air inlet direction of the second air guide portion 132 are set to completely overlap, the air outlet direction of the fan wheel 133 and the air inlet direction of the second air guide portion 132 can be maximally consistent. In this state, the air blown out by the fan wheel 133 can be guided more efficiently through the second air guide portion 132, further reducing the formation of reverse resistance air. At the same time, setting the air outlet direction of the second air guide portion 132 at an angle d with the air inlet direction of the first air guide portion 131, with an angle range of 0-90 degrees, can effectively avoid energy loss caused by direct airflow blowing to the first air guide portion 131, thereby improving the efficiency of the air.

[0040] Of course, in other embodiments, the air outlet direction of the fan wheel 133 can also be partially overlapped with the air inlet direction of the second air guide portion 132, so that the air outlet direction of the fan wheel 133 is relatively consistent with the air inlet direction of the second air guide portion 132, facilitating effective air direction guidance of the air blown out by the fan wheel 133 through the second air guide portion 132.

[0041] As a preferred solution of this embodiment, a gap 15 is formed between the rear end of the first air guide portion 131 and the front end of the second air guide portion 132 along the air outlet direction, with a range of 0-3 millimeters. This gap 15 can effectively avoid interference from air of different directions coming out of the second air guide portion 132 in the space between the first air guide portion 131 and the second air guide portion 132, further reducing energy loss. That is, if the gap 15 is too large, it will cause the air blown out by the second air guide portion 132 to form turbulence in the space between the first air guide portion 131 and the second air guide portion 132; now, the gap 15 is limited to 0-3 mm, which restricts the airflow from spreading between the first air guide portion 131 and the second air guide portion 132, and allows the air blown from the second air guide 132 to quickly pass through the gap 15 and blow directly into the first air guide portion 131 without causing turbulence between them.

[0042] In present embodiment, the fan assembly 13 further comprises an air guide cover 134, and the first air guide portion 131, the second air guide portion 132, and the fan wheel 133 are arranged inside the air guide cover 134. The fan housing 11 also comprises an air inlet a, and the fan wheel 133 is arranged at the air inlet a.

[0043] Through the above structural arrangement, the fan wheel 133 blows an airflow with a certain inclination angle towards the second air guide portion 132. The second air guide portion 132 guides the airflow blown by the fan wheel 133 in another direction, and then the airflow that is changed direction continues to blow towards the first air guide portion 131. The first air guide portion 131 guides the airflow blown by the second air guide portion 132 in another direction, so that the airflow can be blown out from the air outlet b along the direction of the first air guide portion 131, thereby achieving a fixed direction for the airflow, this allows the fan assembly 13 to concentrate the airflow and blow it towards an ideal / desired angle, increasing the air power blown by the fan assembly 13.

[0044] In addition, the end of the fan wheel 133 far away from the second air guide portion 132 extends out of the air guide cover 134, which facilitates the fan wheel 133 to drive the outside air to form an airflow to the second air guide portion 132.

[0045] In this embodiment, the second air guide portion 132 includes an air guide ring 1321 and multiple air guide blades 1322 arranged along the circumference of the air guide ring 1321. The multiple air guide blades 1322 can be arranged at equal intervals or unequal intervals. The extension direction of the air guide blades 1322 towards the air outlet b is set at an angle to the inlet direction of the first air guide portion 131, in this way, the axial direction of the air guide blades 1322 and the air guide ring 1321 are not parallel, and the direction of the air guide blades 1322 is set at a certain angle to the axial direction of the air guide ring 1321, so that the airflow blown by the fan wheel 133 on the air guide blades 1322 changes the direction of the airflow.

[0046] In present embodiment, the air guide blade 1322 is inclined to the air guide ring 1321, and the air guide blade 1322 is twisted in an arc along the radial direction of the air guide ring 1321. The second air guide portion 132 is a static air guide portion.

[0047] Specifically, the air guide blades 1322 are set along the radial direction of the air guide ring 1321 to twist according to a certain curvature, which can form a twisted curved surface or multiple continuous twisted curved surfaces. The twisted curvature range is 0-180 degrees. By setting the air guide blades 1322 in a curved shape along the radial direction of the air guide ring 1321, the air in the second air guide portion 132 can flow in a certain direction, so that the air from the second air guide portion 132 can enter the air duct of the first air guide portion 131 in a better direction, avoiding the air from directly blowing onto the first air guide portion 131, forming reverse resistance air, and causing energy loss. The second air guide portion 132 is a static air guide portion, i.e., the air guide blades 1322 are in a stationary state, the extension direction of the air guide blades 1322 towards the air outlet is relatively fixed, at this time, the air guide blades 1322 can make the air flowing out along the surface of the air guide blades 1322 more effectively enter the air duct of the first air guide portion 131, avoiding relative motion between airs of different directions and causing interference.

[0048] As another preferred embodiment of the present application, the air guide blades 1322 are arranged along the radial direction of the air guide ring 1321 in an inclined plane at a certain angle to the radial direction.

[0049] In other embodiments, the second air guide portion 132 can also be a dynamic air guide portion.

[0050] In present embodiment, the first air guide portion 131 includes multiple grilles 1311 arranged in sequence around the rotation axis of the fan wheel 133, and the grilles 1311 extend in the direction of the rotational axis of the fan wheel 133. The grilles 1311 and air guide cover 134 are integrally formed.

[0051] Preferably, as shown in FIGS. 6, 8, and 16, each of the grilles 1311 extends straight from the air inlet a to the air outlet b. The air guide blade 1322 is arranged at an obtuse angle with the grille 1311 (see FIG. 16). Specifically, the angle between one of the guide blades 1322 and a corresponding grille 1311 is 120 degrees, which allows the airflow to be blown out horizontally (see FIG. 16) after being tilted onto the grille 1311 from the air guide blade 1322, thus improving the air efficiency. In addition, the angle between one of the air guide blades 1322 and the corresponding grille 1311 can also be other angle values such as 110 degrees, 115 degrees, etc.

[0052] Furthermore, the axial length of fan wheel 133 is greater than the length of air guide blade 1322 in the axial direction of fan wheel 133, the length of grille 1311 in the axial direction of fan wheel 133 is greater than the length of air guide blade 1322 in the axial direction of fan wheel 133, and the length of grille 1311 in the axial direction of fan wheel 133 is less than the axial length of fan wheel 133. Specifically, the axial length of fan wheel 133 is 2 to 3 times the length of air guide blade 1322 in the axial direction of fan wheel 133, and the length of grille 1311 in the axial direction of fan wheel 133 is 1.2 to 1.5 times the length of air guide blade 1322 in the axial direction of fan wheel 133. In this way, the length of air guide blade 1322 in the axial direction of fan wheel 133 is reduced, which can make the generated airflow from the fan wheel 133is quickly guided to the grilles 1311 through the air guide blades 1322 and then blown directly towards the user.

[0053] In present embodiment, the fan assembly 13 further includes a driving assembly 12, which is arranged inside the air guide cover 134 and connected to the fan wheel 133. The driving assembly 12 is used to drive the fan wheel 133 to rotate.

[0054] Furthermore, a base 1341 is provided in the middle of the air guide cover 134, and the outer periphery of the base 1341 and the inner periphery of the air guide cover 134 are connected through multiple grilles 1311. A shaft 1342 is provided on the side of the base 1341 facing the air inlet a, and along the direction of the air outlet b, the second air guide portion 132 and the fan wheel 133 are sequentially fitted onto the shaft 1342, and the fan wheel 133 is rotatably connected to the shaft 1342 through a rotating shaft 1343. The driving assembly 12 is composed of a stator 121 and a rotor 122, with the stator 11 fixed on the shaft 1342, the rotor 122 surrounding the stator 121, and the rotor 122 provided on the inner peripheral wall of the fan wheel 133.

[0055] In this embodiment, the second air guide portion 132 is detachably connected to the air guide cover 134; and the air guide cover 134 includes an annular first clamping slot 1351 and a first clamping portion 1352. The first clamping slot 1351 and the first clamping portion 1352 are arranged inside the air guide cover 134, and the first clamping portion 1352 is arranged around the first clamping slot 1351. The second air guide portion 132 includes a circular second clamping slot 1323 and a second clamping portion 1324, and the second clamping slot 1323 and the second clamping portion 1324 are arranged inside the second air guide portion 132, and the first clamping slot 1323 is arranged around the first clamping portion 1324. The first clamping slot 1352 is inserted into the second clamping slot 1323, and the second clamping slot 1324 is inserted into the first clamping slot 1351, so that the second air guide portion 132 can be detachably connected to the air guide cover 134, making it convenient for users to replace the second air guide portion 132 with different air guide angles, thereby obtaining different user experiences.

[0056] In present embodiment, the air guide cover 134 includes a first positioning block 1353, and the second air guide portion 132 includes a first positioning groove 1325. The first positioning block 1353 is engaged in the first positioning groove 1325 to prevent the relative rotation of the air guide cover 134 and the second air guide portion 132, so that the second air guide portion 132 can maintain a fixed position for air guidance and increase the stability of the air guidance of the second air guide portion 132.

[0057] In present embodiment, the fan assembly 13 further includes a display device 14, and the air guide cover 134 includes a receiving groove 136, which is set at the air outlet b, and the display device 14 is set in the receiving groove 136. The fan assembly 13 also includes a cover 138, which is closed on the receiving groove 136, and the cover 138 is made of transparent material to allow the content displayed by the display device 14 to pass through the cover 138.

[0058] In present embodiment, the second air guide portion 132 includes a first wire hole 1326, the air guide cover 134 includes a receiving groove 136. The fan assembly 13 includes a driving assembly 12 and a display device 14, the display device 14 is arranged in the receiving groove 136, the driving assembly 12 is arranged inside the air guide cover 134. The air guide cover 134 also includes a second wire hole 1361, the second wire hole 1361 is set in the receiving groove 136, and the first wire hole 1326 is connected to the second wire hole 1361. The air guide cover 134 also includes a third wire hole 1362, which is arranged in the receiving groove 136. The third wire hole 1362 is connected to the outer wall of the air guide cover 134, and the outer wall of the air guide cover 134 includes two convex strips 137, a first wiring channel 1371 is formed between the two convex strips 137, the third wire hole 1362 is arranged between the two convex strips 137, and is connected to the first wiring channel 1371, so that the first wire hole 1326, the second wire hole 1361, the third wire hole 1362, and the first wiring channel 1371 are connected to each other.

[0059] The present invention also provides a fan head 1, comprising a fan assembly 13 and a fan housing 11, wherein the fan assembly 13 is arranged in the fan housing 11.

[0060] In present embodiment, the fan housing 11 includes a third clamping slot 111, and the fan assembly 13 includes a third clamping portion 139. The third clamping portion 139 is configured to be engaged in the third clamping slot 111, so that the fan assembly 13 can be detachably connected to the fan head 1, when maintenance or replacement parts are needed, it is convenient for users to disassemble.

[0061] In present embodiment, the shape of the fan housing 11 is L-shaped with a corner 119, and the fan housing 11 includes an air duct 112, which is connected to the air inlet a of the fan housing 11. The air duct 112 is connected to the inner wall at the corner 119. The fan housing 11 also includes multiple air inlet holes 113, which are connected to the air duct 112 to connect the air inlet a, the air duct 112, and the air inlet holes 113.

[0062] Preferably, multiple air inlet holes 113 are arranged in a honeycomb pattern, which can filter out larger impurities in the air, prevent them from being sucked in and causing damage to the fan assembly 13, and also make the air inlet area sufficiently large.

[0063] In present embodiment, the fan housing 11 includes a fourth wire hole 114, which is provided on the air duct 112. The fan housing 11 also includes a second wiring channel 115, which is set on the inner wall of the fan housing 11 and is connected to the fourth wire hole 114. When the fan assembly 13 is installed in the fan housing 11, the first wiring channel 1371 is connected to the second wiring channel 115, so that the third wire hole 1362 is connected to the fourth wire hole 114. In this way, the driving assembly 12 and the display device 14 can be connected by wires through the first wire hole 1326, the second wire hole 1361, the third wire hole 1362, and the fourth wire hole 114.

[0064] The present invention also provides a portable fan 3, comprising a fan assembly 13, a fan head 1, and a handheld portion 2, wherein the fan head 1 is detachably connected to the handheld portion 2. The fan head 1 includes an L-shaped fan housing 11, the fan assembly 13 is located inside one end of fan head 1, and handheld portion 2 is detachably connected to the other end of fan head 1.

[0065] In present embodiment, the fan head 1 includes an insertion portion 116, which inserts into an end of the fan housing 11. The handheld portion 2 includes a handheld outer shell 21 and a handheld inner shell 22, the handheld outer shell 21 is sleeved on the outside of the handheld inner shell 22, and a slot 23 is formed between the handheld outer shell 21 and the handheld inner shell 22, and the insertion portion 116 is configured to be inserted into the slot 23, so that the fan head 1 and the handheld portion 2 can be detachably connected.

[0066] In other embodiments, the fan head 1 and the handheld portion 2 can be connected by threaded fit or magnetic fit, and this is not a limitation.

[0067] In this embodiment, the fan housing 11 includes a fourth clamping slot 117, which is arranged on the insertion portion 116. The handheld portion 2 includes a fourth clamping portion 221, which is arranged on the inner shell 22 and is arranged in the slot 23. When the insertion portion 116 is inserted into the slot 23, the fourth clamping portion 221 is engaged in the fourth clamping slot 117 to enhance the connection strength between the fan head 1 and the handheld portion 2. The detachable connection.

[0068] In this embodiment, the fan head 1 includes a second positioning block 118, which is disposed on the inner wall of the fan housing 11 and at an end portion of the fan housing 11. The handheld portion 2 includes a second positioning slot 222, which is disposed at an end portion of the inner housing 22. The second positioning block 118 is configured to be engaged in the second positioning slot 222 to prevent relative rotation between the fan head 1 and the handheld portion 2.

[0069] In present embodiment, there are multiple protrusions 223 on the outer wall of the handheld inner shell 22. When the handheld inner shell 22 is placed inside the handheld outer shell 21, the inner wall of the handheld outer shell 21 presses the protrusions 223 to allow the handheld inner shell 22 and the handheld outer shell 21 to be detachably connected through interference fit.

[0070] In present embodiment, the portable fan 3 further comprises a control board 41, a battery 42, a circuit board 43, a charging port 44, and a control button 45. The control board 41, battery 42, and circuit board 43 are arranged inside the handheld portion 2, and the battery 42, circuit board 43, charging port 44, and the control button 45 are respectively electrically connected to the control board 41. The charging port 44 is connected to the circuit board 43, and the charging port 44 is arranged on the handheld housing 21, while the control button 45 is arranged on the handheld housing 21. External wires are threaded through the fourth wire hole 114, the first wiring channel 1371, the second wiring channel 115, and the third wire hole 1362 to connect the control board 41 and the display device 14, so as to electrically connect the control board 41 and the display device 14. External wires pass through the fourth wire hole 114, the first wiring channel 1371, the second wiring channel 115, the third wire hole 1362, the second wire hole 1361, and the first wire hole 1326 to connect the control board 41 and the driving assembly 12, so as to electrically connect the control board 41 and the driving assembly 12.

[0071] In present embodiment, the handheld portion 2 also includes a hanging rope hole 24, which is set at a lower part of the handheld inner shell 22. The hanging rope hole 24 is used to thread a hanging rope, making it convenient for users to carry the portable fan 3.

[0072] In other implementation schemes, the portable fan 3 can also be a clamp type portable fan with a clamping portion, a desktop portable fan with a base, a floor standing portable fan with a support part, etc., and this is not a limitation.

[0073] The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the patent scope of the present disclosure. Any equivalent structural transformation made by using the content of the specification and the drawings of the present disclosure under the invention idea of the present disclosure, directly or indirectly applied to other related technical fields, shall all be included in the scope of patent protection of the present disclosure.

Examples

Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary skilled persons in the art without creative labor are within the scope of protection of the present invention.

[0037]Referring to FIG. 1 to FIG. 27, the present invention provides a fan assembly 13, which is disposed inside the fan housing 11 and includes a first air guide portion 131, a second air guide portion 132, and a fan wheel 133. The first air guide portion 131 is arranged at an air outlet b of the fan housing 11, the fan wheel 133 is positioned at the end of the first air guide portion 131 away from the air outlet b, and the second air guide portion 132 is located between the first air guide portion 1...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims a priority of Chinese patent application CN 202423197590X, filed on December 24, 2024, the entire disclosures of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present application relates to fan technology, particularly to a fan assembly, fan head, and portable fan.BACKGROUND

[0003] Currently, most portable fans on the market simply enclose the fan blades in the center of a frame, driving them to rotate for air delivery. This structure results in chaotic airflow direction, where different air directions interfere with each other during movement, creating resistance and reducing efficiency. Additionally, after the air blows from the blades, due to varying directions and a large movement area, it tends to disperse over short distances, leading to scattered airflow, insufficient air force, and a poor user experience.

[0004] Therefore, how to develop a portable fan that improves airflow efficiency, delivers concentrated air, and enhances user experience is an urgent issue that professionals in this field need to address.SUMMARY

[0005] To overcome the shortcomings of the prior art, the following technical solution is provided.

[0006] A fan assembly, used to be mounted in a fan housing, includes a first air guide portion arranged in an air outlet of the fan housing; a fan wheel arranged on an end of the first air guide portion away from the air outlet; and a second air guide portion arranged between the first air guide portion and the fan wheel. An air outlet direction of the fan wheel at least partially overlaps with an air inlet direction of the second air guide portion, and an outlet direction of the second air guide portion is set at an angle with an inlet direction of the first air guide portion, the fan assembly is used to guide the air blown out by the fan wheel through the second air guide portion to reduce the airflow directly blowing to the first air guide portion.

[0007] Compared with existing technologies, the fan assembly, fan head, and portable fan of the present invention have the following beneficial effects: by setting a second air guide portion between the first air guide portion and the fan wheel, the air outlet direction of the fan wheel is at least partially overlapped with the air inlet direction of the second air guide portion, and at the same time, the air outlet direction of the second air guide portion forms an angle with the air inlet direction of the first air guide portion, which can effectively guide the air direction blown out by the fan wheel through the second air guide portion, avoiding airflow directly blowing to the first air guide portion to cause reverse resistance air, thereby reducing energy loss, improving air efficiency, and increasing air power to enhance user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present disclosure. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

[0009] FIG. 1 is a schematic view of a portable fan according to an embodiment of the present disclosure.

[0010] FIG. 2 is another schematic view of the portable fan according to an embodiment of the present disclosure.

[0011] FIG. 3 is an exploded view of the portable fan according to an embodiment of the present disclosure.

[0012] FIG. 4 is another exploded view of the portable fan according to an embodiment of the present disclosure.

[0013] FIG. 5 is a partial structure of a fan assembly according to an embodiment of the present disclosure.

[0014] FIG. 6 is a schematic view of a fan assembly according to an embodiment of the present disclosure.

[0015] FIG. 7 is another schematic view of a fan assembly according to an embodiment of the present disclosure.

[0016] FIG. 8 is an exploded view of the fan assembly according to an embodiment of the present disclosure.

[0017] FIG. 9 is an enlarged view of A part of FIG. 8.

[0018] FIG. 10 is an enlarged view of B part of FIG. 8.

[0019] FIG. 11 is another exploded view of the fan assembly according to an embodiment of the present disclosure.

[0020] FIG. 12 is an enlarged view of C part of FIG. 11.

[0021] FIG. 13 is further another exploded view of the fan assembly according to an embodiment of the present disclosure.

[0022] FIG. 14 is an enlarged view of D part of FIG. 13.

[0023] FIG. 15 is a cross sectional view of the fan assembly according to an embodiment of the present disclosure.

[0024] FIG. 16 is another cross sectional view of the fan assembly according to an embodiment of the present disclosure.

[0025] FIG. 17 is a schematic view of a fan head according to an embodiment of the present disclosure.

[0026] FIG. 18 is another schematic view of a fan head according to an embodiment of the present disclosure.

[0027] FIG. 19 is an exploded view of the fan head according to an embodiment of the present disclosure.

[0028] FIG. 20 is another exploded view of the fan head according to an embodiment of the present disclosure.

[0029] FIG. 21 is a cross sectional view of the fan head according to an embodiment of the present disclosure.

[0030] FIG. 22 is further another schematic view of the portable fan according to an embodiment of the present disclosure.

[0031] FIG. 23 is still further another schematic view of the portable fan according to an embodiment of the present disclosure.

[0032] FIG. 24 is an exploded view of the portable fan according to an embodiment of the present disclosure.

[0033] FIG. 25 is an enlarged view of E part of FIG. 24.

[0034] FIG. 26 is another exploded view of the portable fan according to an embodiment of the present disclosure.

[0035] FIG. 27 is further another exploded view of the portable fan according to an embodiment of the present disclosure.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary skilled persons in the art without creative labor are within the scope of protection of the present invention.

[0037] Referring to FIG. 1 to FIG. 27, the present invention provides a fan assembly 13, which is disposed inside the fan housing 11 and includes a first air guide portion 131, a second air guide portion 132, and a fan wheel 133. The first air guide portion 131 is arranged at an air outlet b of the fan housing 11, the fan wheel 133 is positioned at the end of the first air guide portion 131 away from the air outlet b, and the second air guide portion 132 is located between the first air guide portion 131 and the fan wheel 133. The airflow direction of the fan wheel 133 partially or entirely overlaps with an air inlet direction of the second air guide portion 132, while the airflow direction of the second air guide portion 132 forms an angle d with the air inlet direction of the first air guide portion 131. The fan assembly 13 is designed to redirect the airflow blown by the fan wheel 133 through the second air guide portion 132, thereby reducing the airflow directly blowing to the first air guide portion (131).

[0038] Specially, the rotation of the fan wheel 133 draws air into the fan assembly 13 and generates an airflow. The airflow is directed towards the second air guide portion 132, and the direction of the airflow is changed after being guided by the second air guide portion 132. The airflow, which has been changed in direction by the second air guide portion 132, is blown towards the first air guide portion 131 and then blown out from the air outlet b after passing through the first air guide portion 131, in this way, avoiding airflow directly blowing to the first air guide portion 131 to cause reverse resistance air, thereby reducing energy loss, improving air efficiency, and increasing air power to enhance user experience.

[0039] In present embodiment, the second air guide portion 132 is provided between the first air guide portion 131 and the fan wheel 133, and the air outlet direction of the fan wheel 133 is set to completely overlap (i.e., coincide) with the air inlet direction of the second air guide portion 132. When the air outlet direction of the fan wheel 133 and the air inlet direction of the second air guide portion 132 are set to completely overlap, the air outlet direction of the fan wheel 133 and the air inlet direction of the second air guide portion 132 can be maximally consistent. In this state, the air blown out by the fan wheel 133 can be guided more efficiently through the second air guide portion 132, further reducing the formation of reverse resistance air. At the same time, setting the air outlet direction of the second air guide portion 132 at an angle d with the air inlet direction of the first air guide portion 131, with an angle range of 0-90 degrees, can effectively avoid energy loss caused by direct airflow blowing to the first air guide portion 131, thereby improving the efficiency of the air.

[0040] Of course, in other embodiments, the air outlet direction of the fan wheel 133 can also be partially overlapped with the air inlet direction of the second air guide portion 132, so that the air outlet direction of the fan wheel 133 is relatively consistent with the air inlet direction of the second air guide portion 132, facilitating effective air direction guidance of the air blown out by the fan wheel 133 through the second air guide portion 132.

[0041] As a preferred solution of this embodiment, a gap 15 is formed between the rear end of the first air guide portion 131 and the front end of the second air guide portion 132 along the air outlet direction, with a range of 0-3 millimeters. This gap 15 can effectively avoid interference from air of different directions coming out of the second air guide portion 132 in the space between the first air guide portion 131 and the second air guide portion 132, further reducing energy loss. That is, if the gap 15 is too large, it will cause the air blown out by the second air guide portion 132 to form turbulence in the space between the first air guide portion 131 and the second air guide portion 132; now, the gap 15 is limited to 0-3 mm, which restricts the airflow from spreading between the first air guide portion 131 and the second air guide portion 132, and allows the air blown from the second air guide 132 to quickly pass through the gap 15 and blow directly into the first air guide portion 131 without causing turbulence between them.

[0042] In present embodiment, the fan assembly 13 further comprises an air guide cover 134, and the first air guide portion 131, the second air guide portion 132, and the fan wheel 133 are arranged inside the air guide cover 134. The fan housing 11 also comprises an air inlet a, and the fan wheel 133 is arranged at the air inlet a.

[0043] Through the above structural arrangement, the fan wheel 133 blows an airflow with a certain inclination angle towards the second air guide portion 132. The second air guide portion 132 guides the airflow blown by the fan wheel 133 in another direction, and then the airflow that is changed direction continues to blow towards the first air guide portion 131. The first air guide portion 131 guides the airflow blown by the second air guide portion 132 in another direction, so that the airflow can be blown out from the air outlet b along the direction of the first air guide portion 131, thereby achieving a fixed direction for the airflow, this allows the fan assembly 13 to concentrate the airflow and blow it towards an ideal / desired angle, increasing the air power blown by the fan assembly 13.

[0044] In addition, the end of the fan wheel 133 far away from the second air guide portion 132 extends out of the air guide cover 134, which facilitates the fan wheel 133 to drive the outside air to form an airflow to the second air guide portion 132.

[0045] In this embodiment, the second air guide portion 132 includes an air guide ring 1321 and multiple air guide blades 1322 arranged along the circumference of the air guide ring 1321. The multiple air guide blades 1322 can be arranged at equal intervals or unequal intervals. The extension direction of the air guide blades 1322 towards the air outlet b is set at an angle to the inlet direction of the first air guide portion 131, in this way, the axial direction of the air guide blades 1322 and the air guide ring 1321 are not parallel, and the direction of the air guide blades 1322 is set at a certain angle to the axial direction of the air guide ring 1321, so that the airflow blown by the fan wheel 133 on the air guide blades 1322 changes the direction of the airflow.

[0046] In present embodiment, the air guide blade 1322 is inclined to the air guide ring 1321, and the air guide blade 1322 is twisted in an arc along the radial direction of the air guide ring 1321. The second air guide portion 132 is a static air guide portion.

[0047] Specifically, the air guide blades 1322 are set along the radial direction of the air guide ring 1321 to twist according to a certain curvature, which can form a twisted curved surface or multiple continuous twisted curved surfaces. The twisted curvature range is 0-180 degrees. By setting the air guide blades 1322 in a curved shape along the radial direction of the air guide ring 1321, the air in the second air guide portion 132 can flow in a certain direction, so that the air from the second air guide portion 132 can enter the air duct of the first air guide portion 131 in a better direction, avoiding the air from directly blowing onto the first air guide portion 131, forming reverse resistance air, and causing energy loss. The second air guide portion 132 is a static air guide portion, i.e., the air guide blades 1322 are in a stationary state, the extension direction of the air guide blades 1322 towards the air outlet is relatively fixed, at this time, the air guide blades 1322 can make the air flowing out along the surface of the air guide blades 1322 more effectively enter the air duct of the first air guide portion 131, avoiding relative motion between airs of different directions and causing interference.

[0048] As another preferred embodiment of the present application, the air guide blades 1322 are arranged along the radial direction of the air guide ring 1321 in an inclined plane at a certain angle to the radial direction.

[0049] In other embodiments, the second air guide portion 132 can also be a dynamic air guide portion.

[0050] In present embodiment, the first air guide portion 131 includes multiple grilles 1311 arranged in sequence around the rotation axis of the fan wheel 133, and the grilles 1311 extend in the direction of the rotational axis of the fan wheel 133. The grilles 1311 and air guide cover 134 are integrally formed.

[0051] Preferably, as shown in FIGS. 6, 8, and 16, each of the grilles 1311 extends straight from the air inlet a to the air outlet b. The air guide blade 1322 is arranged at an obtuse angle with the grille 1311 (see FIG. 16). Specifically, the angle between one of the guide blades 1322 and a corresponding grille 1311 is 120 degrees, which allows the airflow to be blown out horizontally (see FIG. 16) after being tilted onto the grille 1311 from the air guide blade 1322, thus improving the air efficiency. In addition, the angle between one of the air guide blades 1322 and the corresponding grille 1311 can also be other angle values such as 110 degrees, 115 degrees, etc.

[0052] Furthermore, the axial length of fan wheel 133 is greater than the length of air guide blade 1322 in the axial direction of fan wheel 133, the length of grille 1311 in the axial direction of fan wheel 133 is greater than the length of air guide blade 1322 in the axial direction of fan wheel 133, and the length of grille 1311 in the axial direction of fan wheel 133 is less than the axial length of fan wheel 133. Specifically, the axial length of fan wheel 133 is 2 to 3 times the length of air guide blade 1322 in the axial direction of fan wheel 133, and the length of grille 1311 in the axial direction of fan wheel 133 is 1.2 to 1.5 times the length of air guide blade 1322 in the axial direction of fan wheel 133. In this way, the length of air guide blade 1322 in the axial direction of fan wheel 133 is reduced, which can make the generated airflow from the fan wheel 133is quickly guided to the grilles 1311 through the air guide blades 1322 and then blown directly towards the user.

[0053] In present embodiment, the fan assembly 13 further includes a driving assembly 12, which is arranged inside the air guide cover 134 and connected to the fan wheel 133. The driving assembly 12 is used to drive the fan wheel 133 to rotate.

[0054] Furthermore, a base 1341 is provided in the middle of the air guide cover 134, and the outer periphery of the base 1341 and the inner periphery of the air guide cover 134 are connected through multiple grilles 1311. A shaft 1342 is provided on the side of the base 1341 facing the air inlet a, and along the direction of the air outlet b, the second air guide portion 132 and the fan wheel 133 are sequentially fitted onto the shaft 1342, and the fan wheel 133 is rotatably connected to the shaft 1342 through a rotating shaft 1343. The driving assembly 12 is composed of a stator 121 and a rotor 122, with the stator 11 fixed on the shaft 1342, the rotor 122 surrounding the stator 121, and the rotor 122 provided on the inner peripheral wall of the fan wheel 133.

[0055] In this embodiment, the second air guide portion 132 is detachably connected to the air guide cover 134; and the air guide cover 134 includes an annular first clamping slot 1351 and a first clamping portion 1352. The first clamping slot 1351 and the first clamping portion 1352 are arranged inside the air guide cover 134, and the first clamping portion 1352 is arranged around the first clamping slot 1351. The second air guide portion 132 includes a circular second clamping slot 1323 and a second clamping portion 1324, and the second clamping slot 1323 and the second clamping portion 1324 are arranged inside the second air guide portion 132, and the first clamping slot 1323 is arranged around the first clamping portion 1324. The first clamping slot 1352 is inserted into the second clamping slot 1323, and the second clamping slot 1324 is inserted into the first clamping slot 1351, so that the second air guide portion 132 can be detachably connected to the air guide cover 134, making it convenient for users to replace the second air guide portion 132 with different air guide angles, thereby obtaining different user experiences.

[0056] In present embodiment, the air guide cover 134 includes a first positioning block 1353, and the second air guide portion 132 includes a first positioning groove 1325. The first positioning block 1353 is engaged in the first positioning groove 1325 to prevent the relative rotation of the air guide cover 134 and the second air guide portion 132, so that the second air guide portion 132 can maintain a fixed position for air guidance and increase the stability of the air guidance of the second air guide portion 132.

[0057] In present embodiment, the fan assembly 13 further includes a display device 14, and the air guide cover 134 includes a receiving groove 136, which is set at the air outlet b, and the display device 14 is set in the receiving groove 136. The fan assembly 13 also includes a cover 138, which is closed on the receiving groove 136, and the cover 138 is made of transparent material to allow the content displayed by the display device 14 to pass through the cover 138.

[0058] In present embodiment, the second air guide portion 132 includes a first wire hole 1326, the air guide cover 134 includes a receiving groove 136. The fan assembly 13 includes a driving assembly 12 and a display device 14, the display device 14 is arranged in the receiving groove 136, the driving assembly 12 is arranged inside the air guide cover 134. The air guide cover 134 also includes a second wire hole 1361, the second wire hole 1361 is set in the receiving groove 136, and the first wire hole 1326 is connected to the second wire hole 1361. The air guide cover 134 also includes a third wire hole 1362, which is arranged in the receiving groove 136. The third wire hole 1362 is connected to the outer wall of the air guide cover 134, and the outer wall of the air guide cover 134 includes two convex strips 137, a first wiring channel 1371 is formed between the two convex strips 137, the third wire hole 1362 is arranged between the two convex strips 137, and is connected to the first wiring channel 1371, so that the first wire hole 1326, the second wire hole 1361, the third wire hole 1362, and the first wiring channel 1371 are connected to each other.

[0059] The present invention also provides a fan head 1, comprising a fan assembly 13 and a fan housing 11, wherein the fan assembly 13 is arranged in the fan housing 11.

[0060] In present embodiment, the fan housing 11 includes a third clamping slot 111, and the fan assembly 13 includes a third clamping portion 139. The third clamping portion 139 is configured to be engaged in the third clamping slot 111, so that the fan assembly 13 can be detachably connected to the fan head 1, when maintenance or replacement parts are needed, it is convenient for users to disassemble.

[0061] In present embodiment, the shape of the fan housing 11 is L-shaped with a corner 119, and the fan housing 11 includes an air duct 112, which is connected to the air inlet a of the fan housing 11. The air duct 112 is connected to the inner wall at the corner 119. The fan housing 11 also includes multiple air inlet holes 113, which are connected to the air duct 112 to connect the air inlet a, the air duct 112, and the air inlet holes 113.

[0062] Preferably, multiple air inlet holes 113 are arranged in a honeycomb pattern, which can filter out larger impurities in the air, prevent them from being sucked in and causing damage to the fan assembly 13, and also make the air inlet area sufficiently large.

[0063] In present embodiment, the fan housing 11 includes a fourth wire hole 114, which is provided on the air duct 112. The fan housing 11 also includes a second wiring channel 115, which is set on the inner wall of the fan housing 11 and is connected to the fourth wire hole 114. When the fan assembly 13 is installed in the fan housing 11, the first wiring channel 1371 is connected to the second wiring channel 115, so that the third wire hole 1362 is connected to the fourth wire hole 114. In this way, the driving assembly 12 and the display device 14 can be connected by wires through the first wire hole 1326, the second wire hole 1361, the third wire hole 1362, and the fourth wire hole 114.

[0064] The present invention also provides a portable fan 3, comprising a fan assembly 13, a fan head 1, and a handheld portion 2, wherein the fan head 1 is detachably connected to the handheld portion 2. The fan head 1 includes an L-shaped fan housing 11, the fan assembly 13 is located inside one end of fan head 1, and handheld portion 2 is detachably connected to the other end of fan head 1.

[0065] In present embodiment, the fan head 1 includes an insertion portion 116, which inserts into an end of the fan housing 11. The handheld portion 2 includes a handheld outer shell 21 and a handheld inner shell 22, the handheld outer shell 21 is sleeved on the outside of the handheld inner shell 22, and a slot 23 is formed between the handheld outer shell 21 and the handheld inner shell 22, and the insertion portion 116 is configured to be inserted into the slot 23, so that the fan head 1 and the handheld portion 2 can be detachably connected.

[0066] In other embodiments, the fan head 1 and the handheld portion 2 can be connected by threaded fit or magnetic fit, and this is not a limitation.

[0067] In this embodiment, the fan housing 11 includes a fourth clamping slot 117, which is arranged on the insertion portion 116. The handheld portion 2 includes a fourth clamping portion 221, which is arranged on the inner shell 22 and is arranged in the slot 23. When the insertion portion 116 is inserted into the slot 23, the fourth clamping portion 221 is engaged in the fourth clamping slot 117 to enhance the connection strength between the fan head 1 and the handheld portion 2. The detachable connection.

[0068] In this embodiment, the fan head 1 includes a second positioning block 118, which is disposed on the inner wall of the fan housing 11 and at an end portion of the fan housing 11. The handheld portion 2 includes a second positioning slot 222, which is disposed at an end portion of the inner housing 22. The second positioning block 118 is configured to be engaged in the second positioning slot 222 to prevent relative rotation between the fan head 1 and the handheld portion 2.

[0069] In present embodiment, there are multiple protrusions 223 on the outer wall of the handheld inner shell 22. When the handheld inner shell 22 is placed inside the handheld outer shell 21, the inner wall of the handheld outer shell 21 presses the protrusions 223 to allow the handheld inner shell 22 and the handheld outer shell 21 to be detachably connected through interference fit.

[0070] In present embodiment, the portable fan 3 further comprises a control board 41, a battery 42, a circuit board 43, a charging port 44, and a control button 45. The control board 41, battery 42, and circuit board 43 are arranged inside the handheld portion 2, and the battery 42, circuit board 43, charging port 44, and the control button 45 are respectively electrically connected to the control board 41. The charging port 44 is connected to the circuit board 43, and the charging port 44 is arranged on the handheld housing 21, while the control button 45 is arranged on the handheld housing 21. External wires are threaded through the fourth wire hole 114, the first wiring channel 1371, the second wiring channel 115, and the third wire hole 1362 to connect the control board 41 and the display device 14, so as to electrically connect the control board 41 and the display device 14. External wires pass through the fourth wire hole 114, the first wiring channel 1371, the second wiring channel 115, the third wire hole 1362, the second wire hole 1361, and the first wire hole 1326 to connect the control board 41 and the driving assembly 12, so as to electrically connect the control board 41 and the driving assembly 12.

[0071] In present embodiment, the handheld portion 2 also includes a hanging rope hole 24, which is set at a lower part of the handheld inner shell 22. The hanging rope hole 24 is used to thread a hanging rope, making it convenient for users to carry the portable fan 3.

[0072] In other implementation schemes, the portable fan 3 can also be a clamp type portable fan with a clamping portion, a desktop portable fan with a base, a floor standing portable fan with a support part, etc., and this is not a limitation.

[0073] The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the patent scope of the present disclosure. Any equivalent structural transformation made by using the content of the specification and the drawings of the present disclosure under the invention idea of the present disclosure, directly or indirectly applied to other related technical fields, shall all be included in the scope of patent protection of the present disclosure.

Examples

Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary skilled persons in the art without creative labor are within the scope of protection of the present invention.

[0037]Referring to FIG. 1 to FIG. 27, the present invention provides a fan assembly 13, which is disposed inside the fan housing 11 and includes a first air guide portion 131, a second air guide portion 132, and a fan wheel 133. The first air guide portion 131 is arranged at an air outlet b of the fan housing 11, the fan wheel 133 is positioned at the end of the first air guide portion 131 away from the air outlet b, and the second air guide portion 132 is located between the first air guide portion 1...

Claims

1. A fan assembly (13), used to be mounted in a fan housing (11), comprising:a first air guide portion (131), arranged in an air outlet (b) of the fan housing (11);a fan wheel (133), arranged on an end of the first air guide portion (131) away from the air outlet (b); anda second air guide portion (132), arranged between the first air guide portion (131) and the fan wheel (133);wherein an air outlet direction of the fan wheel (133) at least partially overlaps with an air inlet direction of the second air guide portion (132), and an outlet direction of the second air guide portion (132) is set at an angle (d) with an inlet direction of the first air guide portion (131), the fan assembly (13) is used to guide the air blown out by the fan wheel (133) through the second air guide portion (132) to reduce the airflow directly blowing to the first air guide portion (131).

2. The fan assembly according to claim 1, wherein the fan assembly (13) further comprises an air guide cover (134), wherein the first air guide portion (131), the second air guide portion (132), and the fan wheel (133) are arranged inside the air guide cover (134).

3. The fan assembly according to claim 1, wherein the second air guide portion (132) comprises an air guide ring (1321) and multiple air guide blades (1322) arranged along a circumference of the air guide ring (1321); an extending direction of the air guide blades (1322) towards the air outlet (b) forms an angle with the air inlet direction of the first air guide portion (131).

4. The fan assembly according to claim 3, wherein the air guide blades (1322) are twisted radially along the air guide ring (1321) in an arc shape.

5. The fan assembly according to claim 1, wherein the first air guide portion (131) comprises multiple grilles (1311) arranged in sequence around a rotation axis of the fan wheel (133), and the grilles (1311) each extend along a direction of the rotation axis of the fan wheel (133).

6. The fan assembly according to claim 1, wherein the second air guide portion (132) is a static air guide portion.

7. The fan assembly according to claim 2, wherein a third wire hole (1362) is provided on a peripheral side of the air guide cover (134) near one end of the air outlet (b).

8. The fan assembly according to claim 1, wherein a gap (15) is formed between the first air guide portion (131) and the second air guide portion (132).

9. The fan assembly according to claim 2, wherein the fan assembly (13) further comprises a driving assembly (12) arranged inside the air guide cover (134) and connected to the fan wheel (133).

10. A fan head (1), comprising the fan assembly (13) of claim 1 and a fan housing (11) receiving the fan assembly (13).

11. A portable fan (3), comprising the fan head (1) of claim 10; and a handheld portion (2), the fan head (1) being detachably connected to the handheld portion (2).

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