A bladeless fan

Abstract

The application discloses a bladeless fan and relates to the technical field of fans.The bladeless fan comprises a shell, a battery shell, a handle and an air outlet assembly.A first cavity is formed in the shell, and the first cavity is provided with an air outlet.The battery shell is embedded in the first cavity, and an air outlet channel in air connection with the air outlet is formed between the battery shell and the shell.A part of the handle is embedded in the first cavity, and a second cavity is formed in the inside of the handle, the second cavity is provided with an air inlet, and the second cavity is in air connection with the air outlet channel.The air outlet assembly is located in the second cavity and is connected with the battery shell, so that air is sucked into the second cavity from the air inlet when the air outlet assembly works, and the air is blown out of the air outlet channel to the outside of the air outlet.The battery and the air outlet assembly are placed separately, on the one hand, the air outlet performance is ensured, and on the other hand, the battery is placed in the inside of the shell, the assembly space of the battery is enlarged, and therefore, the endurance time of the bladeless fan can be prolonged by increasing the power storage capacity of the battery.

Description

Technical Field

[0001] This invention relates to the field of fan technology, and in particular to a bladeless fan. Background Technology

[0002] Bladeless fans, also known as air multipliers, produce a natural and continuous cool breeze. Because they have no blades and pose no risk of injury to fingers inserted into them, they are becoming increasingly popular. Current bladeless fans include various types such as handheld, floor-standing, and hanging fans.

[0003] However, in order to make handheld bladeless fans lightweight and easy for users to grip, the handle size is usually very small, and the corresponding battery compartment space is also very small, resulting in a generally short battery life for handheld bladeless fans. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a bladeless fan that overcomes or at least partially solves the above problems.

[0005] This invention provides a bladeless fan, the bladeless fan comprising:

[0006] The outer casing has a first cavity, which has an air outlet.

[0007] A battery housing, which is embedded in the first cavity and forms an air outlet channel with the outer shell that communicates with the air outlet air passage;

[0008] The handle, a portion of which is embedded in the first cavity, has a second cavity inside, the second cavity having an air inlet, wherein the second cavity is connected to the air outlet channel;

[0009] An air outlet assembly is located in the second cavity and connected to the battery housing, so that when the air outlet assembly is working, air is drawn into the second cavity from the air inlet and blown out to the air outlet through the air outlet channel.

[0010] Optionally, the width of the air outlet channel gradually decreases from the middle area of ​​the first cavity to the air outlet.

[0011] Optionally, the channel wall of the air outlet passage between the air outlet and the middle area of ​​the first cavity is arc-shaped.

[0012] Optionally, the battery casing includes:

[0013] A receiving cylinder, wherein an installation port is provided on the end of the receiving cylinder away from the air outlet;

[0014] A limiting piece is disposed on the outer surface of the end of the receiving cylinder away from the air outlet, and contacts the outer surface of the handle and the outer shell respectively, so as to seal the gap between the end of the receiving cylinder away from the air outlet and the outer shell.

[0015] Optionally, a first snap-fit ​​component is provided between the outer surface of the accommodating cylinder and the air outlet component to connect the accommodating cylinder and the air outlet component through the first snap-fit ​​component.

[0016] Optionally, the bladeless fan further includes:

[0017] A battery cover is located at the end of the housing away from the air outlet, wherein the battery cover cooperates with the receiving cylinder to axially limit the battery;

[0018] A second snap-fit ​​assembly is disposed on the battery cover and the limiting piece to connect the battery cover and the limiting piece.

[0019] Optionally, the air outlet assembly includes:

[0020] A bracket, which is connected to the receiving cylinder;

[0021] The motor is connected to the bracket;

[0022] A fan blade is fixed coaxially with the output shaft of the motor so as to drive the fan blade to rotate when the motor is working.

[0023] Optionally, the air inlet is located on the end of the handle away from the housing.

[0024] Optionally, the bladeless fan further includes:

[0025] A display window is provided, in which a circuit board is embedded. The air outlet assembly and the battery are electrically connected to the circuit board. The display window is mounted on the end of the battery housing near the air outlet.

[0026] Optionally, a third snap-fit ​​assembly is provided between the display window and the battery housing to connect the display window and the battery housing.

[0027] Compared with existing technologies, this invention includes a housing, a battery housing, a handle, and an air outlet assembly. The housing has a first cavity with an air outlet. The battery housing is embedded in the first cavity, forming an air outlet channel with the housing that communicates with the air outlet. A portion of the handle is embedded in the first cavity, and the handle has a second cavity with an air intake. The second cavity communicates with the air outlet channel. The air outlet assembly is located in the second cavity and connected to the battery housing. When the air outlet assembly is working, it draws air from the air intake into the second cavity and blows the air out through the air outlet channel. Separating the battery and the air outlet assembly ensures good airflow performance, and placing the battery inside the housing increases the battery's mounting space, thereby increasing the battery's capacity and extending the bladeless fan's runtime.

[0028] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of a cross-sectional structure of a bladeless fan provided in an embodiment of the present invention;

[0032] Figure 2 This is a three-dimensional structural diagram of a shell provided in an embodiment of the present invention;

[0033] Figure 3 This is a schematic cross-sectional view of a shell provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of a first three-dimensional structure of a battery casing provided in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of a second three-dimensional structure of a battery casing provided in an embodiment of the present invention;

[0036] Figure 6 This is a three-dimensional structural diagram of a bracket provided in an embodiment of the present invention;

[0037] Figure 7 This is a three-dimensional structural diagram of a handle provided in an embodiment of the present invention;

[0038] Figure 8 This is a three-dimensional structural diagram of a wind turbine blade provided in an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of a snap ring provided in an embodiment of the present invention;

[0040] Figure 10 This is a three-dimensional structural diagram of a battery cover provided in an embodiment of the present invention;

[0041] Figure 11 This is a three-dimensional structural diagram of a display window provided in an embodiment of the present invention;

[0042] Reference numerals: 1. Outer shell; 101. First cavity; 102. Air outlet; 103. Assembly opening; 2. Battery casing; 201. Air outlet channel; 202. Receiving cylinder; 2021. Mounting port; 203. Limiting plate; 3. Handle; 301. Second cavity; 302. Air inlet; 4. Air outlet assembly; 401. Bracket; 402. Motor; 403. Fan blade; 4031. Body; 4032. Blade; 4033. Connecting rod; 4034. Fourth clip 4035, snap ring; 5, first snap-fit ​​assembly; 501, first buckle; 502, first slot; 6, battery cover; 7, second snap-fit ​​assembly; 701, second buckle; 702, second slot; 8, display window; 9, circuit board; 10, third snap-fit ​​assembly; 1001, third buckle; 1002, third slot; 11, fourth buckle; 12, mounting screw hole; 13, first limit block; 14, second limit block; 15, third limit block; 16, battery. Detailed Implementation

[0043] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] Reference Figure 1-11 This invention provides a bladeless fan, which may include a housing 1, a battery housing 2, a handle 3, and an air outlet assembly 4, wherein:

[0045] The outer casing 1 has a first cavity 101, and the first cavity 101 has an air outlet 102. The battery casing 2 is embedded in the first cavity 101, and an air outlet channel 201 is formed between the battery casing 2 and the outer casing 1, which communicates with the air outlet 102.

[0046] In this embodiment of the invention, the outer casing 1 can be understood as the head of a bladeless fan, and the cross-sectional shape of the outer casing 1 can be rectangular, circular, etc. The battery housing 2 is embedded in the outer casing 1. During battery 16 assembly, the battery 16 can be pre-assembled into the battery housing 2, and then the battery housing 2 is assembled from the air outlet 102 into the first cavity 101, forming a connection with the outer casing 1. Thus, the first cavity 101 between the outer surface of the battery housing 2 and the inner surface of the outer casing 1 can serve as an air outlet channel 201. The air outlet channel 201 is connected to the air outlet 102, allowing air entering the air outlet channel 201 to flow out of the air outlet 102.

[0047] A portion of the handle 3 is embedded in the first cavity 101. The handle 3 has a second cavity 301 inside, and the second cavity 301 has an air inlet 302. The second cavity 301 is connected to the air outlet channel 201.

[0048] In this embodiment of the invention, the handle 3 is for the user to grip, and its cross-sectional shape is typically circular. The air inlet 302 allows external air to enter the second cavity 301, and the second cavity 301 is connected to the air outlet 201. Thus, after external air enters the second cavity 301 through the air inlet 302, it flows to the air outlet 201 and finally exits through the air outlet 102 to the outside of the outer casing 1, completing one air circulation cycle.

[0049] The air outlet assembly 4 is located in the second cavity 301 and is connected to the battery housing 2, so that when the air outlet assembly 4 is working, air is drawn into the second cavity 301 from the air inlet 302 and blown out to the air outlet 102 through the air outlet channel 201.

[0050] In this embodiment of the invention, the air outlet component 4 is located in the second cavity 301. During operation, it generates pressure to draw external air from the air inlet 302 into the second cavity 301. The air is then accelerated by the air outlet component 4, causing an airflow with a certain speed to pass through the air outlet channel 201 and be blown out to the air outlet 102 for cooling. Furthermore, the air outlet component 4 and the battery 16 are assembled in different cavities. This avoids the battery 16 affecting the air outlet performance of the air outlet component 4, and also allows for further expansion of the battery 16's assembly space by placing it in the head of the bladeless fan. This ensures that the bladeless fan is easy for the user to hold, while also increasing the battery's capacity (the battery's capacity is positively correlated with its volume) to improve the bladeless fan's runtime.

[0051] In one optional embodiment of the invention, reference is made to... Figure 1 As shown, the width of the air outlet channel 201 gradually decreases from the middle area of ​​the first cavity 101 to the air outlet 102.

[0052] In this embodiment of the invention, the middle region of the first cavity 101 can be understood as the middle position along the length direction of the first cavity 101. (Refer to...) Figure 1 As shown, the width W1 of the air outlet channel 201 is designed to gradually narrow, which allows the airflow velocity from the air outlet channel 201 to the air outlet 102 to gradually increase. This results in a higher and more concentrated airflow velocity from the bladeless fan. A strong airflow can be obtained at the same airflow velocity of the air outlet assembly 4, which helps to improve the user experience.

[0053] In one optional embodiment of the invention, the channel wall of the air outlet 201 between the air outlet 102 and the intermediate region of the first cavity 101 is arc-shaped.

[0054] In this embodiment of the invention, the channel arm of the air outlet 201 can also be understood as the cavity wall of the first cavity 101 in the corresponding region. Its arc-shaped design can prevent the airflow from being blocked along the air outlet 201 towards the air outlet 102. Therefore, it can be ensured that the gas ejected from the air outlet 201 changes its original flow direction when passing through the channel wall of the air outlet 201, thus adhering to the channel wall of the air outlet 201 as it flows. Therefore, the airflow volume and velocity at the air outlet 102 can be further guaranteed, improving the user experience.

[0055] In one optional embodiment of the invention, reference is made to... Figure 1 , Figure 4 and Figure 5As shown, the battery housing 2 may include a receiving cylinder 202 and a limiting piece 203. The receiving cylinder 202 has an installation opening 2021 on its end away from the air outlet 102. The limiting piece 203 is disposed on the outer surface of the end of the receiving cylinder 202 away from the air outlet 102 and contacts the outer surface of the handle 3 and the outer shell 1 respectively, so as to seal the gap between the end of the receiving cylinder 202 away from the air outlet 102 and the outer shell 1.

[0056] In this embodiment of the invention, the accommodating cylinder 202 can be a tubular structure with one open end. The opening is located at the end of the accommodating cylinder 202 away from the air outlet 102, which can serve as a mounting port 2021 for assembling the battery 16. The battery 16 is fixed inside the accommodating cylinder 202. For example, the battery compartment inside the accommodating cylinder 202 can be connected by a clearance fit or other connection method. The end of the accommodating cylinder 202 near the air outlet 102 is a closed structure, which can prevent air entering the air outlet channel 201 from entering the accommodating cylinder 202 through the accommodating cylinder 202. This ensures the airflow intensity of the air outlet 102. The limiting piece 203 can contact the third limiting block 15 provided on the outer shell 1, thereby achieving position positioning during the assembly of the battery housing 2 and the outer shell 1. On the other hand, the limiting piece 203 can also contact the outer surface of the handle 3 embedded in the outer shell 1 and the inner surface of the outer shell 1, respectively. This allows the airflow entering the air outlet channel 201 to flow towards the air outlet 102 under the pressure of the air outlet assembly 4 by sealing the gap between the end of the accommodating cylinder 202 away from the air outlet 102 and the outer casing 1.

[0057] In one optional embodiment of the invention, reference is made to... Figure 1 As shown, a first snap-fit ​​component 5 is also provided between the outer surface of the accommodating cylinder 202 and the air outlet component 4, so as to connect the accommodating cylinder 202 and the air outlet component 4 through the first snap-fit ​​component 5.

[0058] In this embodiment of the invention, the first snap-fit ​​component 5 may include a first snap-fit ​​501 and a first snap-fit ​​groove 502, wherein the receiving cylinder 202 and the air outlet component 4 are fixed together by snap-fit, which facilitates the quick assembly and disassembly of the receiving cylinder 202 and the air outlet component 4. (Refer to...) Figure 4 , Figure 5 as well as Figure 6As shown, in one example, the outer surface of the accommodating cylinder 202 may be provided with a first buckle 501, and the air outlet component 4 may be provided with a first slot 502. Alternatively, the outer surface of the accommodating cylinder 202 may be provided with a first slot 502, and the air outlet component 4 may be provided with a first buckle 501, thereby fixing the air outlet component 4 to the accommodating cylinder 202 through the snap-fit ​​engagement of the first buckle 501 and the first slot 502. As a preferred embodiment, the accommodating cylinder 202 and the first buckle 501 may be an integral structure.

[0059] In one optional embodiment of the invention, reference is made to... Figure 1 As shown, the bladeless fan may further include a battery cover 6 and a second snap-fit ​​assembly 7. The battery cover 6 is located at the end of the housing 1 away from the air outlet 102, wherein the battery cover 6 cooperates with the receiving cylinder 202 to axially limit the battery 16. The second snap-fit ​​assembly 7 is disposed on the battery cover 6 and the limiting piece 203 to connect the battery cover 6 and the limiting piece 203.

[0060] In this embodiment of the invention, reference is made to Figure 1 and Figure 3 As shown, the first cavity 101 may further include an assembly opening 103, which is located at the end of the first cavity 101 (or the outer casing 1) away from the air outlet 102. Considering that the limiting piece 203 is on the outer surface of the accommodating cylinder 202, its radial length is greater than the radial length of the accommodating cylinder 202. The assembly opening 103 facilitates the assembly of the battery casing 2 into the second cavity 301 from the assembly opening 103. This allows the design of the radial length of the air outlet 102 to be independent of the size of the limiting piece 203, while simultaneously ensuring that the width of the air outlet channel 201 gradually decreases from the middle region of the first cavity 101 to the air outlet 102.

[0061] With the assembly opening 103 provided, the bladeless fan may further include a battery cover 6 and a second snap-fit ​​assembly 7. The battery cover 6 is located at the end of the housing 1 away from the air outlet 102, and it can cooperate with the receiving cylinder 202 to axially limit the battery 16 assembled into the battery 16 compartment. Thus, the battery 16 is fixed by the clearance fit between the battery 16 and the receiving cylinder 202, and the axial limitation of the battery cover 6. Components such as springs or leaf springs for forming a power circuit with the battery 16 can be installed on the receiving cylinder 202 and the battery cover 6. The second snap-fit ​​assembly 7 may include a second latch 701 and a second slot 702. In one example, refer to… Figure 4 , Figure 5 as well as Figure 10 As shown, the battery cover 6 has a second latch 701 on its end face near the receiving cylinder 202, and the limiting piece 203 has a second slot 702. Alternatively, the battery cover 6 has a second slot 702 on its end face near the receiving cylinder 202, and the limiting piece 203 has a second latch 701. The latching engagement of the second latch 701 and the second slot 702 achieves a fixed connection between the battery cover 6 and the receiving cylinder 202.

[0062] In some preferred embodiments, the battery cover 6 and the second buckle 701 are an integral structure, and one end of the battery 16 can extend from inside the battery 16 compartment to outside the receiving cylinder 202. This allows for the utilization of the assembly space within the second cavity 301 and the space where the battery cover 6 extends outward from the outer casing 1 to further expand the assembly space of the battery 16. This ensures that the bladeless fan is easy for the user to hold, while also increasing the battery's storage capacity to improve the fan's runtime.

[0063] In one optional embodiment of the invention, reference is made to... Figure 1 As shown, the air outlet assembly 4 may include a bracket 401, a motor 402, and a fan blade 403, wherein the bracket 401 is connected to the receiving cylinder 202. The motor 402 is connected to the bracket 401, and the fan blade 403 is coaxially fixed to the output shaft of the motor 402 so as to drive the fan blade 403 to rotate when the motor 402 is working.

[0064] In this embodiment of the invention, the bracket 401 and the receiving cylinder 202 can be fixedly engaged by the second snap-fit ​​component 7. In one example, refer to... Figure 8 As shown, the fan blade 403 may include a body 4031 and multiple blades 4032 arranged around the body 4031. The body 4031 has a snap-fit ​​opening located at the end of the body 4031 near the receiving cylinder 202. A snap-fit ​​rod 4033 is centrally located at the snap-fit ​​opening. The body 4031 is snapped and fixed to the output shaft of the motor 402 via the snap-fit ​​rod 4033. The snap-fit ​​rod 4033 has a fourth slot 4034 radially formed, and the output shaft of the motor 402 has a fifth slot inside. (Refer to...) Figure 9As shown, the bladeless fan may further include a retaining spring 4035, which can be embedded in the fourth retaining groove 4034. When the retaining rod 4033 is embedded in the output shaft of the motor 402, the retaining spring 4035 deforms. When the retaining spring 4035 moves into the fifth retaining groove, it is embedded in the fifth retaining groove by the deformation restoring force of the retaining spring 4035, thereby realizing the retaining and fixing between the retaining rod 4033 and the output shaft of the motor 402, and preventing axial movement between the retaining groove and the output shaft of the motor 402.

[0065] In some implementations, refer to Figure 1 As shown, the output shaft of the motor 402 extends axially with a plurality of fourth latches 11, which form clamping claws to engage with the bracket 401 embedded in the fourth latches 11.

[0066] Reference Figure 8 As shown, the blades 4032 extend from the end of the body 4031 near the air inlet 302 towards the end of the body 4031 near the receiving cylinder 202. The gap width W2 between every two adjacent blades 4032 gradually increases from the end of the body 4031 near the air inlet 302 towards the end of the body 4031 near the receiving cylinder 202. Therefore, when the motor 402 rotates, driving the fan blades 403 to rotate, the pressure difference generated by the rotation of the fan blades 403 draws external air from the air inlet 302 into the second cavity 301. The air then passes through the multiple blades 4032 with gradually increasing gap widths, causing the airflow velocity to gradually decrease and the corresponding pressure to gradually increase within the blades 4032. Consequently, under the action of the pressure difference, a large amount of air located in the second cavity 301 is forced into the air outlet 201 and ejected from the air outlet 102.

[0067] In one optional embodiment of the invention, reference is made to... Figure 1 and Figure 7 As shown, the air inlet 302 is located at the end of the handle 3 away from the outer casing 1.

[0068] In this embodiment of the invention, considering that the bladeless fan is only suitable for handheld use, the air inlet 302 is located at the end of the handle 3 furthest from the outer casing 1. That is, when the bladeless fan is held in hand, the air inlet 302 is located at the bottom of the handle 3. Therefore, when the user holds the handle 3 to use the fan, there is no need to worry about the air inlet 302 being blocked, thus ensuring the airflow performance of the bladeless fan. Furthermore, the location of the air inlet 302 at the bottom of the handle 3 prevents some impurities from entering the air inlet 302 due to gravity during use. This prevents impurities (dust, small particles) from entering the second cavity 301 through the air inlet 302 and accumulating there, thus affecting the operating performance of the air outlet assembly 4.

[0069] In one optional embodiment of the invention, reference is made to... Figure 1 and Figure 11 As shown, the bladeless fan may also include a display window 8, in which a circuit board 9 is embedded. The air outlet assembly 4 and the battery 16 are electrically connected to the circuit board 9, and the display window 8 is mounted on the end of the battery housing 2 near the air outlet 102.

[0070] In this embodiment of the invention, the battery 16 supplies power to the air outlet assembly 4 and the circuit board 9, wherein the circuit board 9 controls the operating state of the air outlet assembly 4. For example, a control switch is provided on the circuit board 9, extending to the end face of the display window 8 away from the battery housing 2. Furthermore, the control switch is coupled to the power supply circuit of the air outlet assembly 4. Therefore, the cross-sectional shape of the air outlet 102 can be annular. Moreover, since the air outlet 102 and the display window 8 are located at the same end of the housing 1, the user can operate the bladeless fan by switching it on and off via the display window 8 without adjusting the position of the bladeless fan when using it for cooling, thus improving the ease of operation of the bladeless fan.

[0071] In one optional embodiment of the invention, reference is made to... Figure 1 As shown, a third snap-fit ​​assembly 10 is provided between the display window 8 and the battery housing 2 to connect the display window 8 and the battery housing 2.

[0072] In this embodiment of the invention, the third snap-fit ​​component 10 may include a third snap fastener 1001 and a third snap slot 1002. In one example, referring to... Figure 5 and Figure 11As shown, the display window 8 is provided with a third latch 1001 at the end near the battery housing 2, and correspondingly, the battery housing 2 is provided with a third slot 1002 at the end near the display window 8. Alternatively, the display window 8 is provided with a third slot 1002 at the end near the battery housing 2, and correspondingly, the battery housing 2 (or the receiving cylinder 202) is provided with a third latch 1001 at the end near the display window 8. The latching action of the third latch 1001 and the third slot 1002 can securely fasten the display window 8 and the battery housing 2.

[0073] In one optional embodiment of the invention, reference is made to... Figure 1 , Figure 4 as well as Figure 6 As shown, mounting screw holes 12 are provided on the bracket 401, handle 3 and limiting piece 203, and the bracket 401, handle 3 and limiting piece 203 are fixed by threaded fasteners passing through the mounting screw holes 12.

[0074] In this embodiment of the invention, the threaded fastener may include components such as screws and bolts. Therefore, when assembling the bladeless fan, the battery housing 2 can be placed in the corresponding position within the first cavity 101, the motor 402 connected to the battery housing 2, and the handle 3 embedded into the outer shell 1, aligning the mounting screw holes 12 on the motor 402, handle 3, and limiting plate 203. Finally, the threaded fastener is threaded into the mounting screw holes 12, thereby reinforcing the bracket 401, handle 3, and limiting plate 203, simplifying the assembly of the bladeless fan and ensuring reliable connection. The threaded fastener, after assembly, is located within the first cavity 101. In other words, after installing the battery 16 within the accommodating cylinder 202 and then securing the battery cover 6 to the outer shell 1, the assembly or splicing lines of the parts are not visible from the outer surface of the bladeless fan, improving the overall aesthetics and enhancing the product's applicability and user experience.

[0075] In one optional embodiment of the invention, reference is made to... Figure 1 , Figure 6 as well as Figure 7As shown, the inner surface of the handle 3 is also provided with a first limiting block 13 for limiting the assembly position of the handle 3, and the outer surface of the bracket 401 is provided with a second limiting block 14 for limiting the assembly position of the handle 3. After the air outlet assembly 4 is assembled, the position where the mounting screw hole 12 is opened on the handle 3 can be brought close to the position where the mounting screw hole 12 is opened on the limiting piece 203. Then, the handle 3 is sleeved on the air outlet assembly 4 and embedded in the outer shell 1, and the handle 3 is rotated in a direction so that the first limiting block 13 and the second limiting block 14 come into contact with each other, thereby determining that the positions of the mounting screw holes 12 on the bracket 401, handle 3 and limiting piece 203 are aligned. The bracket 401, handle 3 and limiting piece 203 can be fixed by a threaded fastener.

[0076] In summary, this invention discloses a bladeless fan, which may include a housing 1, a battery housing 2, a handle 3, and an air outlet assembly 4. The housing 1 has a first cavity 101 with an air outlet 102. The battery housing 2 is embedded in the first cavity 101, forming an air outlet channel 201 that communicates with the air outlet 102. A portion of the handle 3 is embedded in the first cavity 101, and a second cavity 301 with an air intake 302 is formed inside the handle 3. The second cavity 301 communicates with the air outlet channel 201. The air outlet assembly 4 is located in the second cavity 301 and connected to the battery housing 2. When the air outlet assembly 4 is in operation, it draws air from the air intake 302 into the second cavity 301 and blows the air out through the air outlet channel 201 to the outside of the air outlet 102. By placing the battery 16 and the air outlet assembly 4 separately, air outlet performance is ensured, and placing the battery 16 inside the outer casing 1 expands the assembly space for the battery 16, thereby increasing the battery's storage capacity and extending the bladeless fan's runtime. Furthermore, this embodiment of the invention combines a bladeless fan with a handheld fan, eliminating safety hazards such as accidental finger insertion into the air outlet grille and resulting injuries. In addition to increasing the bladeless fan's runtime, the size of the handle 3 is not affected by the size of the battery 16, ensuring a superior user experience.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible, and therefore any combination of the above embodiments is an implementation scheme of the present invention. However, due to space limitations, this specification will not describe them in detail here.

[0079] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0080] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the invention above, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0081] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A bladeless fan, characterized in that, The bladeless fan includes: The outer shell (1) has a first cavity (101) and an air outlet (102) on it. Battery housing (2), the battery housing (2) is embedded in the first cavity (101), and an air outlet channel (201) is formed between the battery housing (1) and the outer shell (1) to communicate with the air outlet (102); Handle (3), a portion of the handle (3) is embedded in the first cavity (101), and the handle (3) has a second cavity (301) inside, the second cavity (301) has an air inlet (302), wherein the second cavity (301) is connected to the air outlet channel (201); An air outlet assembly (4) is located in the second cavity (301) and connected to the battery housing (2) to draw air from the air inlet (302) into the second cavity (301) when the air outlet assembly (4) is working, and blow the air out to the air outlet (102) through the air outlet channel (201).

2. The bladeless fan according to claim 1, characterized in that, The width of the air outlet channel (201) gradually decreases from the middle area of ​​the first cavity (101) to the air outlet (102).

3. The bladeless fan according to claim 2, characterized in that, The channel wall of the air outlet channel (201) between the air outlet (102) and the middle area of ​​the first cavity (101) is arc-shaped.

4. The bladeless fan according to claim 1, characterized in that, The battery casing (2) includes: A receiving tube (202) is provided with an installation port (2021) at the end of the receiving tube (202) away from the air outlet (102); A limiting piece (203) is disposed on the outer surface of the end of the accommodating cylinder (202) away from the air outlet (102), and contacts the outer surface of the handle (3) and the outer shell (1) respectively, so as to close the gap between the end of the accommodating cylinder (202) away from the air outlet (102) and the outer shell (1).

5. The bladeless fan according to claim 4, characterized in that, A first snap-fit ​​component (5) is also provided between the outer surface of the accommodating cylinder (202) and the air outlet component (4) to connect the accommodating cylinder (202) and the air outlet component (4) through the first snap-fit ​​component (5).

6. The bladeless fan according to claim 4, characterized in that, The bladeless fan also includes: A battery cover (6) is located on the end of the outer casing (1) away from the air outlet (102), wherein the battery cover (6) cooperates with the receiving cylinder (202) to form an axial limit on the battery (16); The second snap-fit ​​component (7) is disposed on the battery cover (6) and the limiting piece (203) to connect the battery cover (6) and the limiting piece (203) through the second snap-fit ​​component (7).

7. The bladeless fan according to claim 4, characterized in that, The air outlet assembly (4) includes: A bracket (401) is connected to the receiving cylinder (202); A motor (402) is connected to the bracket (401); The fan blade (403) is coaxially fixed with the output shaft of the motor (402) so as to drive the fan blade (403) to rotate when the motor (402) is working.

8. The bladeless fan according to claim 1, characterized in that, The air inlet (302) is located on the end of the handle (3) away from the housing (1).

9. The bladeless fan according to claim 1, characterized in that, The bladeless fan also includes: The display window (8) is embedded with a circuit board (9), wherein the air outlet assembly (4) and the battery (16) are electrically connected to the circuit board (9) respectively, and the display window (8) is installed on the end of the battery housing (2) near the air outlet (102).

10. The bladeless fan according to claim 9, characterized in that, A third snap-fit ​​assembly (10) is provided between the display window (8) and the battery housing (2) to connect the display window (8) and the battery housing (2) via the third snap-fit ​​assembly (10).

Images