Neck-hung fan

Abstract

The utility model discloses a neck-hanging fan which comprises a fan body, a fan cover and a fan cover. The fan assembly is arranged in the fan main body; an air inlet structure is arranged at the position, corresponding to the fan assembly, of the fan body, the surface of a shell of the fan body protrudes to form an air outlet, the air inlet structure is connected with the air outlet through an air duct, and the surface, located in the extending direction of the air outlet, of the shell of the fan body is in an arc shape. The air outlet protrudes to be formed in the shell surface of the fan body, and the shell surface, located in the extending direction of the air outlet, of the fan body is in an arc shape. According to the wall attachment effect of fluid, when an arc-shaped surface appears on a flowing path of airflow blown out of the air outlet, the airflow can directionally move along the arc-shaped surface. The directional moving airflow can enable the airflow blown out of the air outlet to have higher directionality, and the directional moving further can enable the airflow to move more intensively, so that the blowing efficiency is higher.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to a neck-hanging fan. Background Art

[0002] In the hot summer, fans have become a must-have item for people to get rid of the heat. With people's demand for convenient use, fans that are easy to wear and wear have been applied. Neck hanging fans are becoming more and more popular because they are easy to wear and have a significant cooling effect on the neck and face.

[0003] The shell of the neck hanging fan in the prior art is provided with an air inlet and an air outlet. The fan arranged inside the neck hanging fan sucks in the outside air from the air inlet and blows it out from the air outlet, thereby achieving the effect of blowing air. In order to improve the air outlet effect, the air outlet of the neck hanging fan is directly opened on the side closest to the human face or neck. The inventor of the present invention found in the research that the airflow blown out by the existing neck hanging fan lacks restraint and guidance after leaving the air outlet, and the air outlet is scattered and the blowing effect is poor. In addition, the air outlet arranged on the side is easy to contact with the human skin and cause blockage, and the air outlet effect is unstable. Utility Model Content

[0004] The purpose of the present application is to provide a neck-hanging fan in which an air outlet ridge is arranged on the surface of a fan body, and the airflow blown out of the air outlet is constrained by the wall attachment effect of the fluid.

[0005] The present application provides a neck hanging fan, comprising:

[0006] A fan body, wherein the fan body is configured in an arc shape;

[0007] A fan assembly, wherein the fan assembly is disposed in the fan body;

[0008] The fan body is provided with an air inlet structure at a position corresponding to the fan assembly, the shell surface of the fan body is raised to form an air outlet, the air inlet structure and the air outlet are connected by an air duct, and the shell surface of the fan body located in the extension direction of the air outlet is configured to be arc-shaped.

[0009] Optionally, the air outlet is formed by an air outlet plate and an air guide plate, the air outlet plate is raised and formed on the fan body, and the air guide plate extends and bends toward the inside of the fan body; or,

[0010] The air outlet extends along the length direction of the fan body.

[0011] Optionally, a plurality of connecting plates are further provided in the air outlet, one end of each of the plurality of connecting plates is connected to the air outlet plate, and the other end of each of the plurality of connecting plates is connected to the air guide plate.

[0012] Optionally, the neck-hanging fan further includes: an air increasing plate, wherein the air increasing plate is mounted above the air outlet, and a gap is provided between the air increasing plate and the air outlet.

[0013] Optionally, the fan body is protruded on both sides of the air outlet to form a first connecting column and a second connecting column, one end of the air increasing plate is provided with a first connecting sleeve matched with the first connecting column, and the other end of the air increasing plate is provided with a second connecting sleeve matched with the second connecting column; or,

[0014] The wind increasing plate is configured to be arc-shaped along the length direction of the fan body.

[0015] Optionally, the fan body includes: an upper shell and a lower shell, the fan assembly is arranged in the lower shell, the upper shell is buckled on the lower shell, the air inlet structure is arranged on the upper shell and / or the lower shell, and the air outlet ridge is formed on the upper shell and / or the lower shell.

[0016] Optionally, the air duct includes: an air inlet cavity and an air guide cavity, the fan assembly is arranged in the air inlet cavity, the air inlet structure is connected to the air inlet cavity, one end of the air guide cavity is connected to the air inlet cavity, the other end of the air guide cavity extends toward the suspended end of the fan body, and the air guide cavity is connected to the air outlet.

[0017] Optionally, the air inlet cavity and the air guide cavity are both arranged in the lower shell, and the air inlet cavity and / or the air guide cavity are raised at one end of the connection to form an air guide protrusion; and,

[0018] The protrusion direction of the wind guide protrusion is opposite to the deflection direction of the fan blades in the fan assembly; or,

[0019] An angle between an extension line of a protruding direction of the air guiding protrusion and an extension line of a fan blade in the fan assembly is an obtuse angle.

[0020] Optionally, the width of the air guiding cavity gradually decreases along the direction from the air inlet cavity to the suspended end; or,

[0021] The end of the air guiding cavity adjacent to the suspended end is in a closed state.

[0022] Optionally, a first air-binding ring is provided on the inner surface of the fan body, the first air-binding ring is communicated with the air inlet structure, and the first air-binding ring is located above the fan assembly; and / or,

[0023] A second air-binding ring is arranged on the inner surface of the fan body, the second air-binding ring is communicated with the air inlet structure and the air duct respectively, and the second air-binding ring is located below the fan assembly.

[0024] The beneficial effects of the embodiments of the present application are as follows: a fan assembly is provided in the fan body, an air inlet structure and an air outlet are provided on the fan body, a bulge of the air outlet is formed on the shell surface of the fan body, and the shell surface of the fan body in the extension direction of the air outlet is configured to be arc-shaped. It can be known from the wall attachment effect of the fluid that when an arc-shaped surface appears on the flow path of the air flow blown out of the air outlet, the air flow will move directionally along the arc-shaped surface. The directional movement of the airflow can make the air flow blown out of the air outlet have stronger directionality, and the directional movement can also make the air flow movement more concentrated, so the blowing efficiency is higher. At the same time, since the air outlet is arranged on the surface of the fan body and is arranged with a bulge, it can prevent the air outlet from being blocked by human skin, and the air outlet efficiency and air outlet stability of the air outlet are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0026] Figure 1 This is a schematic diagram of the overall structure of a first implementation of a neck hanging fan according to a specific embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the overall structure of a second implementation of a neck hanging fan according to a specific embodiment of the present application;

[0028] Figure 3 This is a partially exploded schematic diagram of a first body in a second implementation manner of a neck hanging fan according to a specific embodiment of the present application;

[0029] Figure 4 This is a cross-sectional diagram of the neck hanging fan of a specific embodiment of the present application in the second embodiment of the AA plane;

[0030] Figure 5 This is a cross-sectional schematic diagram of a first body and a second body in a second implementation manner of a neck hanging fan according to a specific embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the overall structure of the first lower shell in the second implementation manner of a neck hanging fan according to a specific embodiment of the present application.

[0032] Description of the drawings: 1. Fan body; 11. First body; 111. First upper shell; 112. First lower shell; 12. Second body; 121. Second upper shell; 122. Second lower shell; 13. First connecting column; 14. Second connecting column, 15. Air inlet structure; 16. First air beam ring; 17. Second air beam ring; 2. Air outlet; 21. Air outlet plate; 22. Air guide plate; 23. Connecting plate; 3. Fan assembly; 31. Fan blades; 311. Fan blades; 32. Fan motor; 321. Coil; 322. Magnetic ring; 323. Rotating shaft; 4. Air increasing plate; 41. First connecting sleeve; 42. Second connecting sleeve; 5. Air duct; 51. Air inlet cavity; 52. Air guide cavity; 53. Air guide protrusion; 54. Notch; 6. PCB circuit board. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the utility model, the utility model is 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 there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0035] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the overall structure of the first implementation mode of the neck hanging fan in this embodiment; Figure 2 This is a schematic diagram of the overall structure of the second implementation mode of the neck hanging fan of this embodiment; Figure 3 This is a schematic diagram of a partial decomposition of the first main body in the second implementation manner of the neck hanging fan of this embodiment.

[0036] like Figure 1 , Figure 2 and Figure 3As shown, a neck hanging fan comprises: a fan body 1 and a fan assembly 3. The fan body 1 is configured in an arc shape; the fan assembly 3 is arranged in the fan body 1; the fan body 1 is provided with an air inlet structure 15 at a position corresponding to the fan assembly 3, the shell surface of the fan body 1 is raised to form an air outlet 2, the air inlet structure 15 and the air outlet 2 are connected via an air duct 5, and the shell surface of the fan body 1 in the extension direction of the air outlet 2 is configured in an arc shape.

[0037] In this embodiment, the fan body 1 includes: a first body 11 and a second body 12. The first body 11 and the second body 12 are connected by a rotating shaft 323. The first body 11 and the second body 12 can rotate through the rotating shaft 323 to adapt to the blowing needs of different necks or different angles.

[0038] However, the structure of the fan body 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the fan body 1 includes: a first body 11 and a second body 12. The first body 11 and the second body 12 are connected by a flexible hose or an elastic material to adapt to the blowing needs of different necks or different angles.

[0039] In some embodiments, the fan body 1 can be made of plastic injection molding and is no longer divided into the first body 11 and the second body 12 .

[0040] The overall shape of the fan body 1 is configured in a C-shape or a U-shape.

[0041] In this embodiment, the fan assembly 3 includes: a fan motor 32 and a fan blade 31. The fan motor 32 can be a motor with an independent structure, or it can be an integrated motor in which the magnetic ring 322 is integrated on the fan blade 31, and the coil 321 and the control circuit board are fixed in the fan body 1. The fan blade 31 is a vortex fan, but the type of the fan blade 31 is not limited to this. According to different specific application scenarios, in some embodiments, the type of the fan blade 31 can also be (not limited to): an axial flow fan, a diagonal flow fan, or a side flow fan.

[0042] In some embodiments, the fan motor 32 includes: a coil 321, a magnetic ring 322, and a rotating shaft 323. The coil 321 is connected to the PCB circuit board 6 and fixed in the fan body 1. After the magnetic ring 322 is connected to the fan blade 31 through an interference fit, the magnetic ring 322 is sleeved on the coil 321. One end of the rotating shaft 323 is connected to the fan body 1, and the other end is connected to the fan blade 31.

[0043] The fan body 1 is provided with an air inlet structure 15 at a position corresponding to the fan assembly 3. The air inlet structure 15 in this embodiment is: a plurality of air inlet holes provided on the fan body 1. However, the air inlet structure 15 is not limited thereto, and according to different specific application scenarios, the air inlet structure 15 can be (but not limited to): a plurality of air inlet slots or air inlets, etc.

[0044] The number of air inlet structures 15 is 2, which are respectively provided above and below the fan assembly 3. However, the number of air inlet structures 15 is not limited thereto, and according to different specific application scenarios, in some embodiments, the number of air inlet structures 15 can be 1, which is provided above or below the fan assembly 3.

[0045] In this embodiment, there are 2 groups of fan assemblies 3, but the number of fan assemblies 3 is not limited thereto. According to different specific application scenarios, in some embodiments, the number of fan assemblies 3 can be (not limited to): 1 group, 3 groups, 4 groups, 5 groups or more groups. Correspondingly, when the number of fan assemblies 3 changes, the number of air inlet structures 15 and air outlets 2 corresponding to the fan assemblies 3 changes synchronously.

[0046] The shell surface of the fan body 1 is raised to form an air outlet 2. In this embodiment, the air outlet 2 is a slit-type air outlet 2 arranged on the surface of the fan body 1. The slit-type air outlet 2 can be continuous or spaced apart from each other.

[0047] The direction of the air outlet 2 can be upward toward the human face, or downward toward the human shoulder and neck.

[0048] The air inlet structure 15 and the air outlet 2 are connected via an air duct 5, which can be formed by enclosing the inner surface of the fan body 1. However, the composition of the air duct 5 is not limited thereto, and according to different specific application scenarios, in some embodiments, the air duct 5 can be composed of an air guide cavity 52 and an air inlet cavity 51 disposed in the fan housing.

[0049] In order to achieve the purpose of the present invention, the air outlet 2 in the present embodiment has an attachable object in the extension direction. Specifically, when the air outlet 2 is arranged on the shell surface of the fan body 1, part of the shell surface of the fan body 1 is located in the extension direction of the air outlet 2.

[0050] In some embodiments, when the air outlet 2 is disposed at an edge position of the fan body 1 , a partial shell structure is extended from the fan body 1 , and the extended partial shell structure is located in an extending direction of the air outlet 2 .

[0051] The shell surface in the extension direction of the air outlet 2 is configured to be arc-shaped. The arc of the shell surface can be an arc formed by the natural bending and extension of the shell of the fan body 1, or an arc formed by the bulge or indentation of the shell surface. The bending direction of the arc can be either bending below the air outlet 2 or extending above the air outlet 2. The specific bending direction is configured according to the use requirements.

[0052] In the above embodiment, a fan assembly 3 is provided in the fan body 1, an air inlet structure 15 and an air outlet 2 are provided on the fan body 1, the air outlet 2 is formed on the shell surface of the fan body 1, and the shell surface of the fan body 1 in the extension direction of the air outlet 2 is configured to be arc-shaped. It can be known from the wall attachment effect of the fluid that when an arc-shaped surface appears on the flow path of the airflow blown out of the air outlet 2, the airflow will move in a direction along the arc-shaped surface. The directional moving airflow can make the airflow blown out of the air outlet 2 have stronger directionality, and the directional movement can also make the airflow movement more concentrated, so the blowing efficiency is higher. At the same time, since the air outlet 2 is arranged on the surface of the fan body 1 and is arranged in a bulge, it can prevent the air outlet 2 from being blocked by human skin, and the air outlet 2 has higher air outlet efficiency and air outlet stability.

[0053] See also Figure 4 , Figure 4 This is a schematic cross-sectional view of the AA plane of the second implementation mode of the neck hanging fan of this embodiment.

[0054] like Figure 4 As shown, the air outlet 2 is formed by an air outlet plate 21 and an air guide plate 22 . The air outlet plate 21 is raised and formed on the fan body 1 , and the air guide plate 22 extends and bends toward the inside of the fan body 1 .

[0055] See also Figure 5 , Figure 5 Schematic diagram of a cross section of the first body and the second body of the neck hanging fan in the second implementation manner of this embodiment.

[0056] like Figure 5 As shown, the air outlet 2 is formed by an air outlet plate 21 and an air guide plate 22, wherein the air outlet plate 21 is located above the air guide plate 22, and the two ends of the air outlet plate 21 are connected to the two ends of the air guide plate 22 to form an air outlet 2 with closed ends. The air guide plate 22 extends and bends toward the inside of the fan, plays a role in guiding the airflow inside the fan body 1, and can improve the air outlet efficiency of the air outlet 2.

[0057] The air outlet plate 21 and the air guide plate 22 both extend along the length direction of the fan body 1. Therefore, the air outlet 2 formed by the air outlet plate 21 and the air guide plate 22 also extends in the length direction of the fan body 1. Since the fan body 1 is long, the air outlet 2 extends along the length direction of the fan body 1, which can make the area of ​​the air outlet 2 large enough to facilitate the outflow of air and improve the air outlet efficiency.

[0058] In a specific embodiment, the fan body 1 includes: a first body 11 and a second body 12. Two corresponding air outlets 2 are also provided, which are respectively provided on the first body 11 and the second body 12, and the air outlets 2 extend along the length direction of the first body 11 and the second body 12.

[0059] In some embodiments, when the air outlet 2 is composed of a plurality of slits spaced apart from each other, the plurality of slits are also spaced apart and arranged along the length direction of the fan body 1 .

[0060] A plurality of connecting plates 23 are further provided in the air outlet 2 , one end of each of the plurality of connecting plates 23 is connected to the air outlet plate 21 , and the other end of each of the plurality of connecting plates 23 is connected to the air guide plate 22 .

[0061] In this embodiment, the number of the connecting plates 23 is 4. However, the number of the connecting plates 23 is not limited thereto, and according to different specific application scenarios, in some embodiments, the number of the connecting plates 23 can be 2, 3, 5, 6 or more.

[0062] The connection plate 23 can support the structure of the air guide plate 22 and the air outlet plate 21, enhance the physical strength of the air outlet 2, and prevent the air guide plate 22 from collapsing due to external impact or pressure due to the large span. The connection plate 23 can also act as a windshield. Inside the fan body 1, the airflow flows along the length direction of the fan body 1. When the airflow passes through the air outlet 2, it will maintain the trend and inertia of flowing in the length direction of the fan body 1. The connection plate 23 can offset this flow trend and inertia of the airflow, and can ensure that the airflow direction of the air outlet 2 is stable, thereby improving the air outlet efficiency.

[0063] The neck hanging fan further includes: an air increasing plate 4 , which is mounted above the air outlet 2 , and a gap is provided between the air increasing plate 4 and the air outlet 2 .

[0064] The air-increasing plate 4 is an arc-shaped plate. However, the structure of the air-increasing plate 4 is not limited thereto, and according to different specific application scenarios, in some embodiments, the structure of the air-increasing plate 4 can be a straight plate.

[0065] When air is discharged from the air outlet 2, the velocity of the blown air flow is relatively large, and therefore, a velocity difference will be formed with the surrounding air flow. This velocity difference will form a negative pressure wind zone around the air outlet 2. When the negative pressure wind zone is formed, the surrounding air will flow towards the negative pressure wind zone. The air increasing plate 4 is provided at the air outlet 2, which can constrain the airflow flowing towards the negative pressure wind, so that the airflow behind the air outlet 2 passes through the gap between the air increasing plate 4 and the air outlet 2 and flows towards the negative pressure wind zone. This directional airflow flows in the same direction as the air flow blown out of the air outlet 2, which plays a role in increasing the air volume of the air outlet 2. Therefore, the provision of the air increasing plate 4 can increase the air volume of the air outlet 2, which has the effect of doubling the increment.

[0066] The fan body 1 is formed with a first connection column 13 and a second connection column 14 protruding on both sides of the air outlet 2. A first connection sleeve 41 matching with the first connection column 13 is provided at one end of the air-increasing plate 4, and a second connection sleeve 42 matching with the second connection column 14 is provided at the other end of the air-increasing plate 4. The air-increasing plate 4 is fixed by the matching plug-in method of the connection column and the connection sleeve, so that the air-increasing plate 4 can be easily disassembled and replaced.

[0067] The connection method between the air increasing plate 4 and the fan body 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the air increasing plate 4 and the fan body 1 can also be connected by (not limited to): gluing, riveting, screw fixing, clamping, etc.

[0068] The fan body 1 includes: an upper shell and a lower shell, the fan assembly 3 is arranged in the lower shell, the upper shell is buckled on the lower shell, the air inlet structure 15 is arranged on the upper shell and / or the lower shell, and the air outlet 2 is raised and formed on the upper shell and / or the lower shell.

[0069] In some embodiments, the fan body 1 includes: a first body 11 and a second body 12. The first body 11 and the second body 12 both include: an upper shell and a lower shell. The first body 11 includes: a first upper shell 111 and a first lower shell 112; the second body 12 includes: a second upper shell 121 and a second lower shell 122.

[0070] The air outlet 2 is provided on the surface of the first upper shell 111 and the second upper shell 121. However, the location of the air outlet 2 is not limited thereto. According to different specific application scenarios, in some embodiments, the air outlet 2 is provided on the surface of the first lower shell 112 and the second lower shell 122; or, the air outlet 2 is provided on the surface of the first upper shell 111, the second upper shell 121, the first lower shell 112 and the second lower shell 122.

[0071] In some embodiments, the air outlet 2 is opened on the side where the first upper shell 111 and the first lower shell 112 are connected, and the first upper shell 111 or the first lower shell 112 extends below the air outlet 2 to form an arc-shaped air attachment plate (not shown) for forming a wall attachment effect.

[0072] In some embodiments, the air outlet 2 is opened at the side where the second upper shell 121 and the second lower shell 122 are connected, and the second upper shell 121 or the second lower shell 122 extends below the air outlet 2 to form an arc-shaped air attachment plate for forming a wall attachment effect.

[0073] See also Figure 6 , Figure 6 This is a schematic diagram of the overall structure of the first lower shell in the second implementation manner of the neck hanging fan in this embodiment.

[0074] like Figure 6 As shown, the air duct 5 includes: an air inlet cavity 51 and an air guide cavity 52, the fan assembly 3 is arranged in the air inlet cavity 51, the air inlet structure 15 is connected to the air inlet cavity 51, one end of the air guide cavity 52 is connected to the air inlet cavity 51, and the other end of the air guide cavity 52 extends toward the suspended end of the fan body 1, and the air guide cavity 52 is connected to the air outlet 2.

[0075] The air inlet cavity 51 is configured in an annular shape and is provided with a notch 54 for connecting with the air guide cavity 52. ​​The air inlet cavity 51 can be independently provided and fixed in the first lower shell 112 and the second lower shell 122; it can also be directly formed on the first lower shell 112 and the second lower shell 122 through an integrated molding manufacturing process.

[0076] The air guiding cavity 52 extends along the length direction of the first body 11 and the second body 12 respectively, and one end of the air guiding cavity 52 is connected to the air inlet cavity 51. The air guiding cavity 52 can be independently manufactured and fixed inside the first body 11 and the second body 12; or it can be formed by a line structure formed by protrusions or ridges on the inner surfaces of the first body 11 and the second body 12 to form an integrated structure.

[0077] The provision of the air inlet cavity 51 and the air guide cavity 52 can reduce the resistance of the air flow in the fan body 1 and improve the air outlet efficiency of the fan.

[0078] The air inlet cavity 51 and the air guide cavity 52 are both arranged in the lower shell body, and the air inlet cavity 51 and / or the air guide cavity 52 are raised at one end of the connection to form an air guide protrusion 53.

[0079] The wind guide protrusion 53 can be formed on the wind inlet cavity 51, can also be formed on the wind guide cavity 52, and can also be formed by splicing the protrusions at both ends of the wind inlet cavity 51 and the wind guide cavity 52. ​​The surface of the wind guide protrusion 53 has a smooth transition, which can reduce wind resistance.

[0080] The protruding direction of the wind guide protrusion 53 is opposite to the deflection direction of the fan blade 311 in the fan assembly 3; or, the angle between the extension line of the protruding direction of the wind guide protrusion 53 and the extension line of the fan blade 311 in the fan assembly 3 is an obtuse angle. When the fan blade 311 rotates, it rotates along the deflection direction of its blade, so the wind blown out from the fan blade 311 also flows along the deflection direction of the fan blade 311. The wind guide protrusion 53 is opposite to the deflection direction of the fan blade 311 in the fan blade 31 or the extension line is an obtuse angle, which can make the airflow angle between the wind guide protrusion 53 and the fan blade 311 obtuse or opposite, thereby guiding the airflow from the air inlet cavity 51 to the air guide cavity 52. ​​Because the airflow angle between the wind guide protrusion 53 and the fan blade 311 is an obtuse angle or opposite, the airflow transition of the wind guide protrusion 53 is smoother when guiding the airflow, and the blowing efficiency is higher.

[0081] The width of the air guide cavity 52 gradually decreases from the air inlet cavity 51 to the suspended end. Since the air guide cavity 52 is connected to the air outlet 2, and both the air guide cavity 52 and the air outlet 2 extend along the length direction of the fan body 1, during the flow of air, part of the air flows out through the air outlet 2, and the other part of the air continues to flow forward along the air guide cavity 52. ​​The gradually shrinking air guide cavity 52 can gradually constrain the flow space of the air flow and make it flow toward the air outlet 2. At the same time, the gradually shrinking space can make up for the pressure difference caused by the gradual loss of the air flow, so that the air flows out from different parts of the air outlet 2 have the same or similar initial velocity, ensuring the stability of the air outlet at different positions of the air outlet 2.

[0082] The end of the air guiding cavity 52 adjacent to the suspended end is in a closed state. The closed end of the air guiding cavity 52 can prevent the air flow from flowing out from the opening position of the air guiding cavity 52 instead of flowing out from the air outlet 2, thereby enhancing the air outlet efficiency of the air guiding cavity 52.

[0083] A first air-compression ring 16 is provided on the inner surface of the fan body 1, the first air-compression ring 16 is connected to the air inlet structure 15, and the first air-compression ring 16 is located above the fan assembly 3; and / or,

[0084] A second air-binding ring 17 is provided on the inner surface of the fan body 1 . The second air-binding ring 17 is communicated with the air inlet structure 15 and the air duct 5 respectively, and the second air-binding ring 17 is located below the fan assembly 3 .

[0085] The first air control ring 16 is disposed on the first upper shell 111 and the second upper shell 121 , and the second air control ring 17 is disposed on the first lower shell 112 and the second lower shell 122 .

[0086] The arrangement of the first air catching ring 16 and the second air catching ring 17 needs to be adjusted according to the distribution of the air inlet structure 15. When the air inlet structure 15 is only arranged on the first upper shell 111 and the second upper shell 121, only the first air catching ring 16 is arranged; when the air inlet structure 15 is only arranged on the first lower shell 112 and the second lower shell 122, only the second air catching ring 17 is arranged; when the air inlet structure 15 is arranged on the first upper shell 111, the second upper shell 121, the first lower shell 112 and the second lower shell 122, the first air catching ring 16 and the second air catching ring 17 are arranged.

[0087] The provision of the first air-bundling ring 16 and the second air-bundling ring 17 can effectively constrain the airflow entering the air inlet structure 15 , so that more airflow can enter the fan assembly 3 , thereby improving the air blowing efficiency of the fan assembly 3 .

[0088] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, 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 intended to be additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A neck hanging fan, characterized in that: include: A fan body, wherein the fan body is configured in an arc shape; A fan assembly, wherein the fan assembly is disposed in the fan body; The fan body is provided with an air inlet structure at a position corresponding to the fan assembly, the shell surface of the fan body is raised to form an air outlet, the air inlet structure and the air outlet are connected by an air duct, and the shell surface of the fan body located in the extension direction of the air outlet is configured to be arc-shaped.

2. The neck hanging fan according to claim 1, characterized in that: The air outlet is formed by an air outlet plate and an air guide plate, the air outlet plate is raised and formed on the fan body, and the air guide plate extends and bends toward the inside of the fan body; or, The air outlet extends along the length direction of the fan body.

3. The neck hanging fan according to claim 2, characterized in that: A plurality of connecting plates are also provided in the air outlet, one end of each of the plurality of connecting plates is connected to the air outlet plate, and the other end of each of the plurality of connecting plates is connected to the air guide plate.

4. The neck hanging fan according to claim 1, characterized in that: The neck hanging fan further includes: an air increasing plate, which is arranged above the air outlet, and a gap is provided between the air increasing plate and the air outlet.

5. The neck hanging fan according to claim 4, characterized in that: The fan body is provided with a first connecting column and a second connecting column protruding on both sides of the air outlet, one end of the air inflating plate is provided with a first connecting sleeve matched with the first connecting column, and the other end of the air inflating plate is provided with a second connecting sleeve matched with the second connecting column; or The wind increasing plate is configured to be arc-shaped along the length direction of the fan body.

6. The neck hanging fan according to claim 1, characterized in that: The fan body includes: an upper shell and a lower shell, the fan assembly is arranged in the lower shell, the upper shell is buckled on the lower shell, the air inlet structure is arranged on the upper shell and / or the lower shell, and the air outlet ridge is formed on the upper shell and / or the lower shell.

7. The neck hanging fan according to claim 6, characterized in that: The air duct includes: an air inlet cavity and an air guide cavity, the fan assembly is arranged in the air inlet cavity, the air inlet structure is connected to the air inlet cavity, one end of the air guide cavity is connected to the air inlet cavity, the other end of the air guide cavity extends toward the suspended end of the fan body, and the air guide cavity is connected to the air outlet.

8. The neck hanging fan according to claim 7, characterized in that: The air inlet cavity and the air guide cavity are both arranged in the lower shell, and the air inlet cavity and / or the air guide cavity are raised at one end of the connection to form an air guide protrusion; as well as, The protrusion direction of the wind guide protrusion is opposite to the deflection direction of the fan blades in the fan assembly; or, An angle between an extension line of a protruding direction of the air guiding protrusion and an extension line of a fan blade in the fan assembly is an obtuse angle.

9. The neck hanging fan according to claim 7, characterized in that: The width of the air guiding cavity gradually decreases along the direction from the air inlet cavity to the suspended end; or, The end of the air guiding cavity adjacent to the suspended end is in a closed state.

10. The neck hanging fan according to claim 1, characterized in that: A first air-binding ring is disposed on the inner surface of the fan body, the first air-binding ring is communicated with the air inlet structure, and the first air-binding ring is located above the fan assembly; and / or, A second air-binding ring is arranged on the inner surface of the fan body, the second air-binding ring is communicated with the air inlet structure and the air duct respectively, and the second air-binding ring is located below the fan assembly.

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