Portable fan

Abstract

The utility model discloses a portable fan which comprises a fan assembly arranged in a fan shell, and a fan air inlet and a fan air outlet which are communicated with the fan assembly are formed in the fan shell; the fan air inlet comprises a first air inlet, and the first air inlet is formed in the surface of the side, facing the body of a wearer, of the fan shell. The first air inlet is formed in the surface, facing the side of the body of the wearer, of the fan shell, and when the fan assembly starts to work, airflow flows into the fan shell from the side of the body of the wearer. And when air enters the first air inlet, the airflow on the surface of the body of the wearer can be accelerated to flow, so that the first air inlet plays a role in cooling. According to the portable fan, the fan air inlet and the fan air outlet can play a role in cooling and ventilation for a wearer, the air inlet function and the air outlet function of the portable fan are fully utilized, the cooling efficiency of the portable fan is improved, and maximum utilization of the functions of the portable fan is achieved.

Description

Technical Field

[0001] This application relates to the field of fans, and more particularly to a portable fan. Background Technology

[0002] In the hot summer, fans have become an essential item for people to relieve the heat. With people's demand for convenient use, lighter and more portable fans are becoming increasingly popular.

[0003] In existing technologies, the air inlet and outlet of a fan are always positioned opposite each other. Airflow, propelled by the fan blades, flows from the inlet into the fan's interior and then from the interior to the outlet. In daily use, people typically point the outlet at the location requiring cooling or airflow. The inventors of this application discovered that existing technologies have insufficient development of the functionalities of wearable fans, preventing them from achieving their maximum performance. Utility Model Content

[0004] The purpose of this application is to provide a portable fan that can make full use of the fan's air intake / exhaust functions.

[0005] This application provides a portable fan, including:

[0006] Fan housing;

[0007] A fan assembly is disposed within the fan housing, and the fan housing has a fan inlet and a fan outlet communicating with the fan assembly.

[0008] The fan inlet includes a first air inlet, which is located on the surface of the fan housing facing the wearer's body.

[0009] Optionally, the fan inlet further includes: a second air inlet, the second air inlet being disposed on the bottom surface of the fan housing; and / or,

[0010] The fan inlet further includes: a third air inlet, the third air inlet being located on a surface adjacent to the first air inlet; and / or...

[0011] Along the circumference of the fan housing, the fan housing tapers arcuately towards both sides from the center, so that the first air inlet extends arcuately along the side wall of the fan housing; and / or,

[0012] The fan assembly is a three-phase motor; and / or,

[0013] The rated operating voltage of the fan assembly is 6-8.4V or 9-12.6V; and / or,

[0014] The rated operating current of the fan assembly is 0.1-2.9A or 0.08-2.7A; and / or,

[0015] The rated power of the fan assembly is 0.6-25W or 0.7-33W; and / or,

[0016] The fan assembly rotates at a speed of 14,000-48,000 revolutions per minute.

[0017] Optionally, a first air inlet grille is provided at the first air inlet, and a first air inlet hole is formed on the first air inlet grille; a second air inlet grille is provided at the second air inlet, and a second air inlet hole is formed on the second air inlet grille; the opening area of ​​the first air inlet hole is larger than the opening area of ​​the second air inlet hole; and / or,

[0018] A first air inlet grille is provided at the first air inlet, and a first air inlet hole is provided on the first air inlet grille. A third air inlet grille is provided at the third air inlet, and a third air inlet hole is provided on the third air inlet grille. The opening area of ​​the first air inlet hole is larger than the opening area of ​​the third air inlet hole.

[0019] Optionally, a first air inlet grille is provided at the first air inlet, and a first air inlet hole is provided on the first air inlet grille. A fourth air inlet grille is provided inside the first air inlet on the fan housing, and a fourth air inlet hole is provided on the fourth air inlet grille. The opening area of ​​the first air inlet hole is larger than the opening area of ​​the fourth air inlet hole.

[0020] Optionally, the fan housing includes: a first housing and a second housing, the first housing being sleeved on the second housing, the first air inlet being opened on the first housing and the second housing, and the first air inlet grilles being respectively disposed on the first housing and the second housing, and the first air inlet grilles on the first housing and the second housing being aligned with each other.

[0021] Optionally, the fan housing includes: a first housing, a second housing, and a bottom cover plate. The first housing is sleeved on the second housing. The bottom cover plate is snap-fitted to the second housing, and the edge of the bottom cover plate abuts against the first housing. The second air inlet is opened on the bottom cover plate, and the second air inlet grille is detachably mounted on the bottom cover plate.

[0022] Optionally, the fan housing includes: a first housing, a second housing, and a third housing, wherein the first housing is sleeved on the second housing, the third housing is inserted into the second housing, a first side of the third housing is exposed outside the first and second housings, and the third air inlet is opened on the first side.

[0023] Optionally, the fan housing further includes: a sandwich panel, one end of which is inserted into and connected to a third housing, the other end of which is snapped into a first housing and a second housing, a third air inlet being respectively opened on a first side and a sandwich panel, the edge of a third air inlet grille being disposed between the sandwich panel and the first side, and a portion of the structure of the third air inlet grille being inserted into the third air inlet on the first side.

[0024] Optionally, the third housing is provided with an assembly cavity, the fan assembly is disposed in the assembly cavity by means of fastening, a buffer sleeve is provided between the assembly cavity and the fan assembly, and the assembly cavity is provided with a deformation notch.

[0025] Optionally, the fan housing is provided with a connector located below the second air inlet, the fourth air inlet grille is connected to the connector, and a mixer is also provided inside the fan housing. The mixer is connected to the first air inlet, the second air inlet and the third air inlet respectively, and part of the structure of the mixer is mounted and abuts against the connector.

[0026] The beneficial effects of this embodiment are as follows: The portable fan has its first air inlet located on the surface of the fan housing facing the wearer's body. When the fan assembly starts working, airflow flows from the wearer's body side into the fan housing. The first air inlet, while allowing air to enter, also accelerates the airflow over the wearer's body surface, thus achieving a cooling effect. Both the fan inlet and outlet provide cooling and ventilation for the wearer, fully utilizing the portable fan's air intake and exhaust functions, improving its cooling efficiency, and maximizing the use of the portable fan's functionality. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 This is a schematic diagram of the overall structure of a portable fan according to a specific embodiment of this application;

[0029] Figure 2 This is a cross-sectional schematic diagram of a portable fan according to a specific embodiment of this application;

[0030] Figure 3 This is an exploded view of a portable fan according to a specific embodiment of this application.

[0031] Figure Descriptions: 1. Fan housing; 11. First housing; 12. Second housing; 13. Third housing; 131. First side; 14. Bottom cover; 15. First air inlet; 151. First air inlet grille; 152. First air inlet hole; 153. Fourth air inlet grille; 154. Fourth air inlet hole; 16. Second air inlet; 161. Second air inlet grille; 162. Second air inlet hole; 17. Third air inlet; 171. Third air inlet grille; 172. Third air inlet hole; 18. Mezzanine plate; 2. Fan assembly; 21. Buffer sleeve; 3. Battery assembly; 4. Clamping structure; 5. Mixer. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0034] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of the portable fan in this embodiment; Figure 2 This is a schematic diagram of the first exploded structure of the portable fan in this embodiment.

[0035] like Figure 1 and Figure 2 As shown, a portable fan includes a fan housing 1 and a fan assembly 2. The fan assembly 2 is disposed inside the fan housing 1, and the fan housing 1 has a fan inlet and a fan outlet communicating with the fan assembly 2; the fan inlet includes a first air inlet 15, which is located on the surface of the fan housing 1 facing the wearer's body.

[0036] The fan housing 1 in this embodiment includes a first housing 11, a second housing, and a third housing 13. The first housing 11 is fitted onto the second housing 12, and the third housing 13 is inserted into the second housing 12. The fan assembly 2 is connected to the third housing 13, and each air inlet opening penetrates through the first housing 11 and the second housing 12. However, the structure of the fan housing 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the fan housing 1 can be formed by splicing two half-housings together front and back or top and bottom.

[0037] Fan assembly 2 includes a fan motor and fan blades. The fan motor can be (but is not limited to): a single-phase motor, a two-phase motor, or a three-phase motor.

[0038] The first air inlet 15 is located on the side wall of the fan housing 1, and faces the wearer's body. When the portable fan is worn around the neck via a lanyard loop, the first air inlet 15 faces the wearer's chest or abdomen. When the portable fan is clipped to the wearer's clothing or belt via a clip structure 4, the first air inlet 15 faces different parts of the wearer's body depending on the clipping location.

[0039] In the above embodiment, the portable fan has a first air inlet 15 located on the surface of the fan housing 1 facing the wearer's body. When the fan assembly 2 starts operating, airflow flows from the wearer's body side into the fan housing 1. When air enters through the first air inlet 15, it also accelerates the airflow over the wearer's body surface, thus achieving a cooling effect. Both the fan inlet and outlet provide cooling and ventilation for the wearer, fully utilizing the portable fan's air intake and exhaust functions, improving its cooling efficiency, and maximizing the use of the portable fan's functionality.

[0040] In some embodiments, the fan assembly is a three-phase motor, which has a higher rotational speed, thereby increasing the airflow rate and volume of the fan assembly 2. However, the fan assembly is not limited to this; depending on the specific application scenario, in some embodiments, the fan assembly can be a single-phase motor or a two-phase motor.

[0041] In some embodiments, the fan inlet further includes a second air inlet 16, which is disposed on the bottom surface of the fan housing 1. The second air inlet 16 increases the overall air intake space of the portable fan, reduces the resistance to airflow entering the fan housing 1, increases the air intake volume of the portable fan, and improves the blowing efficiency of the portable fan.

[0042] By placing the second air inlet 16 at the bottom of the fan housing 1, the airflow entering from the first air inlet 15 and the airflow entering from the second air inlet 16 can converge, thereby canceling the lateral movement kinetic energy of the airflow entering from the first air inlet 15 and making the airflow entering from the first air inlet 15 and the second air inlet 16 have the same direction of movement, thus improving the air intake efficiency of the fan assembly 2.

[0043] In some embodiments, the fan inlet further includes a third air inlet 17, which is formed on the surface adjacent to the first air inlet 15. The third air inlet 17 on the fan housing 1 increases the overall air intake space of the portable fan, reduces the resistance to airflow into the fan housing 1, increases the air intake volume of the portable fan, and improves the blowing efficiency of the portable fan.

[0044] By placing the third air inlet 17 on the side wall adjacent to the first air inlet 15, the airflow entering from the first air inlet 15 and the airflow entering from the second air inlet 16 can be perpendicularly intersected, thus offsetting the lateral kinetic energy of the airflow entering from the first air inlet 15 and the third air inlet 17. This weakens the lateral kinetic energy of the airflow entering from the first air inlet 15 and the third air inlet 17, thereby reducing the lateral kinetic energy of the airflow entering from both directions when it enters the fan assembly 2. The airflow is more easily captured and bound by the fan blades, improving the air intake efficiency of the fan assembly 2.

[0045] In some implementations, the fan assembly is powered by battery assembly 3, which can power two, three, four or more batteries in series.

[0046] In some implementations, the rated operating voltage of the fan assembly is 6-8.4V or 9-12.6V. When the rated operating voltage of the fan assembly is 6-8.4V, the fan assembly is powered by two batteries connected in series. Within this rated operating voltage range, the rated operating current of the fan assembly is 0.1-2.9A, the rated power of the fan assembly is 0.6-25W, and the speed of the fan assembly is 14000-46000 rpm.

[0047] When the rated operating voltage of the fan assembly is 9-12.6V, the fan assembly is powered by three batteries connected in series. Within this rated operating voltage range, the rated operating current of the fan assembly is 0.08-2.7A, the rated power of the fan assembly is 0.7-33W, and the speed of the fan assembly is 14000-48000 rpm.

[0048] When the fan assembly is a three-phase motor and powered by a battery, the high-speed rotating fan assembly increases the air intake demand of the fan housing 1. Setting multiple air inlets can improve the air intake efficiency of the portable fan, avoid the problem of insufficient air intake caused by the air inlet being too small, and improve the air intake efficiency of the portable fan.

[0049] In some embodiments, the fan housing 1 is arc-shaped and tapers from the middle to both sides along the circumference of the fan housing 1, so that the first air inlet 15 is located on at least two cross-sections.

[0050] Along the circumference of the fan housing 1, the fan housing 1 tapers in an arc from the center to both sides, giving it a spindle-shaped structure that is thicker in the middle and thinner at the sides. This shape of the fan housing 1 allows the sidewalls of the fan housing 1, where the first air inlet 15 is located, to extend arcuately from the center to both sides. This arcuate extension of the sidewalls inevitably results in the first air inlet 15 also having an arcuate extension. The arcuate extension of the first air inlet 15 reduces the area covered by the first air inlet 15 on a single plane, making it less likely to be blocked by the wearer, thus preventing poor airflow. For example, when the sidewall of the first air inlet 15 is a flat plane, the first air inlet 15 is highly likely to be completely blocked when the wearer is pressed against it. When the first air inlet 15 is arcuate, the coverage of the same plane cannot completely cover the arcuate surface, preventing the first air inlet 15 from being completely obscured and ensuring its effective airflow.

[0051] In some embodiments, a first air inlet grille 151 is provided at the first air inlet 15, and a first air inlet hole 152 is provided on the first air inlet grille 151. A second air inlet grille 161 is provided at the second air inlet 16, and a second air inlet hole 162 is provided on the second air inlet grille 161. The opening area of ​​the first air inlet hole 152 is larger than the opening area of ​​the second air inlet hole 162.

[0052] A first air inlet grille 151 is provided at the first air inlet 15. The first air inlet grille 151 can prevent foreign objects from entering the fan housing 1 and damaging the fan assembly 2. It can also prevent the wearer's body parts or clothing from entering the fan assembly 2, thus protecting the wearer's life and property safety.

[0053] Similarly, a second air intake grille 161 is provided at the second air intake 16. The second air intake grille 161 is also provided to protect the life and property safety of the fan assembly 2 and the wearer.

[0054] The opening area of ​​the first air inlet 152 is larger than that of the second air inlet 162. Since the first air inlet 15 faces the wearer's body, it is more likely to be blocked by foreign objects. Therefore, setting the area of ​​the first air inlet 152 on the first air inlet grille 151 at the first air inlet 15 reduces the chance of the first air inlet 15 being completely blocked, thus improving its air intake efficiency. Conversely, the second air inlet grille 161 is located at the second air inlet 16, and its probability of being covered or blocked by foreign objects is far less than that of the first air inlet 15. Setting the area of ​​the second air inlet 162 to be smaller prevents even smaller foreign objects from entering the fan housing 1, providing better protection.

[0055] In some embodiments, a first air inlet grille 151 is provided at the first air inlet 15, and a first air inlet hole 152 is provided on the first air inlet grille 151. A third air inlet grille 171 is provided at the third air inlet 17, and a third air inlet hole 172 is provided on the third air inlet grille 171. The opening area of ​​the first air inlet hole 152 is larger than the opening area of ​​the third air inlet hole 172.

[0056] A first air inlet grille 151 is provided at the first air inlet 15. The first air inlet grille 151 can prevent foreign objects from entering the fan housing 1 and damaging the fan assembly 2. It can also prevent the wearer's body parts or clothing from entering the fan assembly 2, thus protecting the wearer's life and property safety.

[0057] Similarly, a third air intake grille 171 is provided at the third air intake 17. The third air intake grille 171 is also provided to protect the life and property safety of the fan assembly 2 and the wearer.

[0058] The opening area of ​​the first air inlet 152 is larger than that of the third air inlet 172. Since the first air inlet 15 faces the wearer's body, it is more likely to be blocked by foreign objects. Therefore, setting the area of ​​the first air inlet 152 on the first air inlet grille 151 at the first air inlet 15 reduces the chance of the first air inlet 15 being completely blocked, thus improving its air intake efficiency. Conversely, the third air inlet grille 171 is located at the third air inlet 17, and its probability of being covered or blocked by foreign objects is far less than that of the first air inlet 15. Setting the area of ​​the third air inlet 172 to be smaller prevents even smaller foreign objects from entering the fan housing 1, providing better protection.

[0059] In some embodiments, a first air inlet grille 151 is provided at the first air inlet 15, and a first air inlet hole 152 is provided on the first air inlet grille 151. A fourth air inlet grille 153 is provided inside the first air inlet 15, and a fourth air inlet hole 154 is provided on the fourth air inlet grille 153. The opening area of ​​the first air inlet hole 152 is larger than the opening area of ​​the fourth air inlet hole 154.

[0060] A first air inlet grille 151 and a fourth air inlet grille 153 are respectively installed at the first air inlet 15, with the fourth air inlet grille 153 located inside the first air inlet grille 151. These two layers of grilles provide double filtration and protection for the first air inlet 15. Simultaneously, since the first air inlet grille 151 comes into direct contact with the wearer's body or clothing during use, the area of ​​the first air inlet hole 152 is set relatively large to prevent it from being blocked, thus reducing the chance of the first air inlet 15 being completely blocked and improving its air intake efficiency. Because the first air inlet hole 152 has a relatively large area, its filtration effect on small foreign objects is relatively poor. Therefore, a fourth air inlet grille 153 is installed inside the first air inlet grille 151. The area of ​​the fourth air inlet hole 154 is smaller than that of the first air inlet hole 152, which can effectively block even smaller foreign objects and improve the protective effect.

[0061] A first air inlet grille 151 and a fourth air inlet grille 153 are respectively installed at the first air inlet 15. Since the area of ​​the fourth air inlet 154 is smaller than that of the first air inlet 152, the air pressure gradually increases along the direction from the first air inlet 152 to the fourth air inlet 154. The gradually increasing air pressure causes some airflow to backflow during the flow process. The backflowing airflow flows towards the wearer, which has a gentle blowing effect and improves the cooling effect of the portable fan.

[0062] In some embodiments, the fan housing 1 includes: a first housing 11 and a second housing 12, the first housing 11 being sleeved on the second housing 12, a first air inlet 15 being formed on the first housing 11 and the second housing 12, and a first air inlet grille 151 being respectively disposed on the first housing 11 and the second housing 12, and the first air inlet grilles 151 on the first housing 11 and the second housing 12 being aligned with each other.

[0063] The fan housing 1 includes a first housing 11 and a second housing 12. The second housing 12 supports the first housing 11, increasing the strength of the fan housing 1. The first housing 11 protects the second housing 12 from damage. The first housing 11 and the second housing 12 also provide dual protection for the fan assembly 2 and other components inside the second housing 12, improving the protection of the portable fan for its internal components.

[0064] The first air inlet grille 151 is respectively disposed on the first housing 11 and the second housing 12, and the first air inlet grille 151 on the first housing 11 and the second housing 12 are aligned with each other. The alignment structure avoids airflow resistance when passing through the first housing 11 and the second housing 12, and improves the air intake efficiency of the first air inlet 15.

[0065] In some embodiments, the fan housing 1 includes: a first housing 11, a second housing 12, and a bottom cover plate 14. The first housing 11 is sleeved on the second housing 12, the bottom cover plate 14 is snap-fitted to the second housing 12, and the edge of the cover of the bottom cover plate 14 abuts against the first housing 11. A second air inlet 16 is opened on the bottom cover plate 14, and a second air inlet grille 161 is detachably mounted on the bottom cover plate 14.

[0066] Similarly, the arrangement of the first housing 11 and the second housing 12 has the same beneficial effect as the above-described technical solution, and will not be repeated here.

[0067] The bottom cover plate 14 is snapped together with the second housing 12, and its cover edge abuts against the first housing 11, which serves to fix the first housing 11 and the second housing 12, so that the first housing 11 and the second housing 12 are stably maintained in the fitted state, and the first housing 11 and the second housing 12 are prevented from separating from each other.

[0068] The second air inlet 16 is located on the bottom cover plate 14, and the second air inlet grille 161 is detachably mounted on the bottom cover plate 14. Specifically, the bottom cover plate 14 has an insertion groove, and the second air inlet grille 161 is inserted into the insertion groove after its side is bent. However, the connection method between the second air inlet grille 161 and the bottom cover plate 14 is not limited to this. Depending on the specific application scenario, in some embodiments, the second air inlet grille 161 and the bottom cover plate 14 can be connected by (but not limited to) magnetic attraction, screws, snap-fit, etc.

[0069] The second air intake grille 161 is detachably connected to the bottom cover plate 14, facilitating the removal and replacement of any damaged second air intake grille 161. This also allows for easy inspection and replacement of damaged components inside the fan housing 1.

[0070] In some embodiments, the fan housing 1 includes a first housing 11, a second housing 12 and a third housing 13. The first housing 11 is fitted onto the second housing 12, and the third housing 13 is inserted into the second housing 12. The first side 131 of the third housing 13 is exposed outside the first housing 11 and the second housing 12, and the third air inlet 17 is formed on the first side 131.

[0071] In a three-shell structure, the outer shell protects the inner shell, while the inner shell supports the outer shell. Furthermore, the three-shell structure is assembled using a modular, independent pre-assembly method, improving assembly efficiency. The plug-in structure achieves a stable connection without the need for additional fixing structures such as screws.

[0072] The third air inlet 17 is positioned on the first side 131 of the third housing 13, facilitating its opening. Compared to the traditional method of splicing two half-housing units, where opening an air inlet on the side of the housing requires creating half an opening on each half-housing unit and then splicing them together to form a complete opening, setting the third air inlet 17 on the first side 131 of the third housing 13 allows for direct opening without the need for splicing.

[0073] In some embodiments, the fan housing 1 further includes: a sandwich panel 18, one end of which is inserted into and connected to the third housing 13, and the other end of which is engaged with the first housing 11 and the second housing 12; a third air inlet 17 is respectively opened on the first side 131 and the sandwich panel 18; the edge of the third air inlet grille 171 is disposed between the sandwich panel 18 and the first side 131, and a portion of the structure of the third air inlet grille 171 is inserted into the third air inlet 17 of the first side 131.

[0074] The sandwich panel 18 ensures a more stable connection between the first side 131 of the third housing 13 and the first housing 11 and the second housing 12. The edge of the third air inlet grille 171 is clamped between the sandwich panel 18 and the first side 131, preventing it from detaching inwards or outwards and ensuring a more stable connection. A portion of the third air inlet grille 171 is inserted into the third air inlet 17 of the first side 131, making the outer surface of the fan housing 1 smooth and preventing vortices from forming at the pits in the housing, which would affect airflow efficiency and generate vortex noise at higher airflow speeds. Therefore, inserting a portion of the third air inlet grille 171 into the third air inlet 17 of the first side 131 improves airflow efficiency and reduces airflow noise.

[0075] In some embodiments, the third housing 13 is provided with an assembly cavity, the fan assembly 2 is disposed in the assembly cavity by means of a fastening fit, a buffer sleeve 21 is provided between the assembly cavity and the fan assembly 2, and the assembly cavity is provided with a deformation notch.

[0076] Fan assembly 2 is mounted in the assembly cavity via a fastening mechanism, allowing it to be assembled as a modular component. This improves the assembly efficiency of fan assembly 2 and facilitates timely replacement should it be damaged.

[0077] A buffer sleeve 21 is provided between the assembly cavity and the fan assembly 2, which can reduce the vibration generated by the fan assembly 2 during operation and transmit it to the fan housing 1. This reduces abnormal vibration and noise of the portable fan.

[0078] The assembly cavity has a deformation notch, which makes the space of the assembly cavity variable under the action of a certain external force, making it convenient to assemble the fan assembly 2 into the assembly cavity. At the same time, it also makes it convenient to remove the fan assembly 2 from the assembly cavity.

[0079] In some embodiments, a connector is provided in the fan housing 1 below the second air inlet 16, the fourth air inlet grille 153 is connected to the connector, and a mixer 5 is also provided inside the fan housing 1. The mixer 5 is connected to the first air inlet 15, the second air inlet 16 and the third air inlet 17 respectively, and part of the structure of the mixer 5 is mounted on the connector.

[0080] A mixer 5 is disposed within the fan housing 1, and the mixer 5 is connected to the fan assembly 2 and multiple air inlets. Airflow enters the mixer 5 from the multiple air inlets, where it undergoes lateral kinetic energy cancellation and mixing, improving the efficiency of airflow entering the fan assembly 2. The independently configured mixer 5 facilitates disassembly and assembly. Simultaneously, the mixer 5 compresses the mixing space, reducing the space required for airflow within the mixing space, resulting in better consistency of airflow direction after mixing.

[0081] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A portable fan, characterized in that, include: Fan housing; A fan assembly is disposed within the fan housing, and the fan housing has a fan inlet and a fan outlet communicating with the fan assembly. The fan inlet includes a first air inlet, which is located on the surface of the fan housing facing the wearer's body.

2. The portable fan according to claim 1, characterized in that, The fan inlet further includes: a second air inlet, the second air inlet being disposed on the bottom surface of the fan housing; and / or, The fan inlet further includes: a third air inlet, the third air inlet being located on a surface adjacent to the first air inlet; and / or... Along the circumference of the fan housing, the fan housing tapers arcuately towards both sides from the center, so that the first air inlet extends arcuately along the side wall of the fan housing; and / or, The fan assembly is a three-phase motor; and / or, The rated operating voltage of the fan assembly is 6-8.4V or 9-12.6V; and / or, The rated operating current of the fan assembly is 0.1-2.9A or 0.08-2.7A; and / or, The rated power of the fan assembly is 0.6-25W or 0.7-33W; and / or, The fan assembly rotates at a speed of 14,000-48,000 revolutions per minute.

3. The portable fan according to claim 2, characterized in that, A first air inlet grille is provided at the first air inlet, and a first air inlet hole is formed on the first air inlet grille. A second air inlet grille is provided at the second air inlet, and a second air inlet hole is formed on the second air inlet grille. The opening area of ​​the first air inlet hole is larger than the opening area of ​​the second air inlet hole; and / or, A first air inlet grille is provided at the first air inlet, and a first air inlet hole is provided on the first air inlet grille. A third air inlet grille is provided at the third air inlet, and a third air inlet hole is provided on the third air inlet grille. The opening area of ​​the first air inlet hole is larger than the opening area of ​​the third air inlet hole.

4. The portable fan according to claim 2, characterized in that, A first air inlet grille is provided at the first air inlet, and a first air inlet hole is provided on the first air inlet grille. A fourth air inlet grille is provided inside the first air inlet on the fan housing, and a fourth air inlet hole is provided on the fourth air inlet grille. The opening area of ​​the first air inlet hole is larger than the opening area of ​​the fourth air inlet hole.

5. The portable fan according to claim 3, characterized in that, The fan housing includes: a first housing and a second housing, the first housing being sleeved on the second housing, the first air inlet being opened on the first housing and the second housing, and the first air inlet grilles being respectively disposed on the first housing and the second housing, and the first air inlet grilles on the first housing and the second housing being aligned with each other.

6. The portable fan according to claim 3, characterized in that, The fan housing includes a first housing, a second housing, and a bottom cover plate. The first housing is fitted onto the second housing. The bottom cover plate is snap-fitted to the second housing, and the edge of the bottom cover plate abuts against the first housing. The second air inlet is opened on the bottom cover plate, and the second air inlet grille is detachably mounted on the bottom cover plate.

7. The portable fan according to claim 3, characterized in that, The fan housing includes a first housing, a second housing, and a third housing. The first housing is fitted onto the second housing, and the third housing is inserted into the second housing. A first side of the third housing is exposed outside the first and second housings, and a third air inlet is located on the first side.

8. The portable fan according to claim 7, characterized in that, The fan housing further includes: a sandwich panel, one end of which is inserted into and connected to a third housing, and the other end of which is snapped into a first housing and a second housing. The third air inlet is respectively opened on the first side and the sandwich panel. The edge of the third air inlet grille is located between the sandwich panel and the first side, and a portion of the structure of the third air inlet grille is inserted into the third air inlet on the first side.

9. The portable fan according to claim 7, characterized in that, The third housing has an assembly cavity, and the fan assembly is fastened in the assembly cavity. A buffer sleeve is provided between the assembly cavity and the fan assembly, and the assembly cavity has a deformation notch.

10. The portable fan according to claim 4, characterized in that, The fan housing is provided with a connector located below the second air inlet. The fourth air inlet grille is connected to the connector. A mixer is also provided inside the fan housing. The mixer is connected to the first air inlet, the second air inlet and the third air inlet respectively, and part of the structure of the mixer is mounted on the connector.

Images