A bladeless fan and its assembling method

Abstract

The present invention discloses a bladeless fan and an assembly method thereof. The bladeless fan includes: a filtering device with a hollow interior forming an accommodation space; a base disposed directly below the filtering device; a nozzle device disposed directly above the filtering device; and an air flow generating device disposed in the accommodation space formed by the filtering device. Wherein the nozzle device, the air flow generating device, the filtering device and the base are coaxially arranged in sequence from top to bottom, and the nozzle device and the filtering device are detachably connected. In the bladeless fan of this case, the nozzle device and the filtering device are fixedly connected, so that the user cannot disassemble and assemble the nozzle device without tools, and the overall integrity is relatively large, and the user does not need to install it by himself.

Description

Technical Field

[0001] The present invention relates to the field of bladeless fans, and particularly to a bladeless fan and an assembling method thereof. Background Art

[0002] For the existing nozzle device of the bladeless fan, it is detachable independently, and the design of the nozzle device and the filtering device cannot be realized; although the detachable bladeless fan is convenient for installers to install, users can also disassemble it. However, due to the low professional level of users, there are potential safety hazards.

[0003] In view of this, it is necessary to develop a bladeless fan and an assembling method thereof to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide a bladeless fan and an assembling method thereof. By setting a filtering device with a hollow interior to form an accommodation space; a base disposed directly below the filtering device; a nozzle device disposed directly above the filtering device; and an air flow generating device disposed in the accommodation space formed by the filtering device. Wherein the nozzle device, the air flow generating device, the filtering device and the base are coaxially arranged in sequence from top to bottom, and the nozzle device is fixedly connected to the filtering device, so that the user cannot disassemble or assemble the nozzle device without tools, the overall integrity is relatively large, and the user does not need to install it by himself, improving safety.

[0005] To achieve the above objects and other advantages according to the present invention, there is provided a bladeless fan, including:

[0006] A filtering device with a hollow interior to form an accommodation space;

[0007] A base disposed directly below the filtering device;

[0008] A nozzle device disposed directly above the filtering device; and

[0009] An air flow generating device disposed in the accommodation space formed by the filtering device;

[0010] Wherein the nozzle device, the air flow generating device, the filtering device and the base are coaxially arranged in sequence from top to bottom, and the nozzle device is threadedly connected to the filtering device.

[0011] Preferably, the filtering device includes:

[0012] A filtering frame disposed in the innermost layer of the filtering device;

[0013] A filtering structure concentrically sleeved outside the filtering frame;

[0014] Among them, at least two groups of the filtering structures surround the filtering frame, and at least two groups of connecting components are provided at the intersecting interfaces of every two of the filtering structures. When the filtering structures are removably mounted on the filtering frame through the connecting components, every two of the filtering structures are separably connected through the connecting components.

[0015] Preferably, the filtering frame includes at least two groups of arch-shaped frames, and every two of the arch-shaped frames are wrapped and combined to form an accommodation space at the concave surface of the arch-shaped frames;

[0016] At least two groups of clamping components are provided at the combining interfaces of every two of the arch-shaped frames;

[0017] Among them, the number of the filtering frames is consistent with the number of the filtering structures, and each group of the filtering structures is removably mounted on the corresponding group of the arch-shaped frames.

[0018] Preferably, the base includes:

[0019] A fixed layer, which is arranged at the bottommost part of the bladeless fan;

[0020] A rotating layer, which is located above the fixed layer;

[0021] Among them, the rotating layer and the fixed layer are coaxially arranged, a transmission component is arranged inside the rotating layer, and at least one group of control components and support components are arranged between the rotating layer and the fixed layer.

[0022] Preferably, the transmission component further includes a stepper motor and a gear set;

[0023] Among them, the gear set includes a large gear and a small gear, the stepper motor is mounted on the small gear, and the large gear is mounted on the rotating shaft of the rotating layer.

[0024] Preferably, the control component includes;

[0025] A central Hall element, which is on the same straight line as the stepper motor and the rotating shaft;

[0026] An edge Hall element, which takes the rotating shaft as the center and is at the 1 / 2 maximum rotation angle on one side.

[0027] Hall magnets are respectively arranged below the central Hall element and the edge Hall element.

[0028] Preferably, a trigger switch is mounted on the base.

[0029] Preferably, the nozzle device includes:

[0030] A flow splitting device, which is provided with at least two flow splitting channels;

[0031] Front nozzle housing

[0032] Rear nozzle housing, whose shape and size are matched with that of the front nozzle housing

[0033] Wherein, the flow dividing device is arranged in the air flow channel formed by the combination of the front nozzle housing and the rear nozzle housing

[0034] Preferably, the flow dividing device includes

[0035] A first component with a hollow interior; and

[0036] A second component with a recessed interior and coaxially mounted on the first component

[0037] Wherein, the second component is provided with at least two annular flow dividing openings, the first component wraps the second component, the first component is adapted to the second component and a flow dividing space is formed between the first component and the second component

[0038] Preferably, a nozzle protrusion is provided on the surface of the front nozzle housing facing the rear nozzle housing

[0039] A nozzle groove is provided on the surface of the rear nozzle housing facing the front nozzle housing

[0040] Wherein, the nozzle groove is matched with the nozzle protrusion

[0041] Preferably, the air flow generating device includes

[0042] A drainage pipe with a hollow interior and both upper and lower ends open to form an upper opening and a lower opening respectively

[0043] A power chamber, which is spaced and coaxially arranged in the drainage pipe to form an annular drainage cavity between the drainage pipe and the power chamber

[0044] Preferably, a rotating impeller coaxial with the drainage pipe is arranged in the annular drainage cavity, an impeller driver is arranged in the power chamber, and the power output end of the impeller driver is in transmission connection with the rotating impeller

[0045] Furthermore, the present case also provides an assembling method for assembling the bladeless fan as described in any one of the foregoing items, which is characterized by including the following steps

[0046] Step S1, installing the nozzle device directly above the filtering device

[0047] Step S2, installing a detachable connecting component between the nozzle device and the filtering device

[0048] Step S3: Move the filter component of the filtering device closer to the filter frame in the radial direction until it covers the detachable connection.

[0049] Compared with the prior art, the beneficial effects of the present invention are as follows: A filtering device is provided, which is hollow inside to form an accommodation space; a base is provided directly below the filtering device; a nozzle device is provided directly above the filtering device; and an air flow generating device is provided in the accommodation space formed by the filtering device. Among them, the nozzle device, the air flow generating device, the filtering device, and the base are coaxially arranged in sequence from top to bottom. The connection between the nozzle device and the filtering device is detachable, making it impossible for the user to disassemble or assemble the nozzle device without tools. The overall integrity is relatively large, and the user does not need to install it by themselves, improving safety. Brief Description of the Drawings

[0050] Figure 1 Internal perspective view of a bladeless fan according to an embodiment of the present invention;

[0051] Figure 2 Perspective view of a filtering device according to an embodiment of the present invention;

[0052] Figure 3 Perspective view of a separation device of a filtering device according to an embodiment of the present invention;

[0053] Figure 4 Perspective view of a filter frame of a filtering device according to an embodiment of the present invention;

[0054] Figure 5 Top view of a partial filtering structure of a filtering device according to an embodiment of the present invention;

[0055] Figure 6 Perspective view of a clamping component according to an embodiment of the present invention;

[0056] Figure 7 Perspective view of a base according to an embodiment of the present invention;

[0057] Figure 8 Perspective view of a separation device of a base according to an embodiment of the present invention;

[0058] Figure 9 Front view of a rotating layer according to an embodiment of the present invention;

[0059] Figure 10 Bottom view of a rotating layer according to an embodiment of the present invention;

[0060] Figure 11 Front sectional view of a base according to an embodiment of the present invention;

[0061] Figure 12 Top view of the base according to an embodiment of the present invention;

[0062] Figure 13 Front elevation sectional view of the bladeless fan according to an embodiment of the present invention;

[0063] Figure 14 Flowchart of a control method for a base according to an embodiment of the present invention;

[0064] Figure 15 Flowchart of a control method for a base according to an embodiment of the present invention;

[0065] Figure 16 Stereogram of the bladeless fan according to an embodiment of the present invention;

[0066] Figure 17 Stereogram of the separation device for the front nozzle housing and the rear nozzle housing according to an embodiment of the present invention;

[0067] Figure 18 Stereogram of the flow splitting device according to an embodiment of the present invention;

[0068] Figure 19 Stereogram of the separation device of the flow splitting device according to an embodiment of the present invention;

[0069] Figure 20 Top view of the flow splitting device according to an embodiment of the present invention;

[0070] Figure 21 Front elevation sectional view of the flow splitting device according to an embodiment of the present invention;

[0071] Figure 22 Top view of the second component of the flow splitting device according to an embodiment of the present invention;

[0072] Figure 23 Front elevation sectional view of the support member of the flow splitting device according to an embodiment of the present invention;

[0073] Figure 24 Front elevation sectional view of the first sealing ring of the flow splitting device according to an embodiment of the present invention;

[0074] Figure 25 Stereogram of the first sealing ring of the flow splitting device according to an embodiment of the present invention;

[0075] Figure 26Front cross-sectional view of the second sealing ring of the flow splitting device according to an embodiment of the present invention;

[0076] Figure 27 Front view of the front nozzle housing of the flow splitting device according to an embodiment of the present invention;

[0077] Figure 28 Top cross-sectional view of the separation device of the front nozzle housing and the rear nozzle housing of the flow splitting device according to an embodiment of the present invention;

[0078] Figure 29 Top cross-sectional view of the front nozzle housing and the rear nozzle housing of the flow splitting device according to an embodiment of the present invention;

[0079] Figure 30 Three-dimensional view of the lining plate structure of the flow splitting device according to an embodiment of the present invention;

[0080] Figure 31 Top view of the lining plate structure of the flow splitting device according to an embodiment of the present invention;

[0081] Figure 32 Top view of the lining plate of the flow splitting device according to an embodiment of the present invention;

[0082] Figure 33 Front view of the lining plate of the flow splitting device according to an embodiment of the present invention;

[0083] Figure 34 Three-dimensional view of the guide plate of the flow splitting device according to an embodiment of the present invention;

[0084] Figure 35 Three-dimensional view of the separation device of the guide plate of the flow splitting device according to an embodiment of the present invention;

[0085] Figure 36 Front cross-sectional view of the air flow generating device according to an embodiment of the present invention;

[0086] Figure 37 Partial cross-sectional view of the fixing assembly of the flow generating device according to an embodiment of the present invention;

[0087] Figure 38 Front cross-sectional view of the air flow generating device according to an embodiment of the present invention;

[0088] Figure 39 Top view of the air flow generating device according to an embodiment of the present invention. Detailed implementation manners

[0089] The present invention will be further described in detail below with reference to the accompanying drawings. The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement it according to the description in the specification.

[0090] In the accompanying drawings, for clarity, the shapes and dimensions may be enlarged, and the same reference numerals will be used throughout the drawings to indicate the same or similar components.

[0091] In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined with respect to the configurations shown in the respective drawings. In particular, "height" corresponds to the dimension from the top to the bottom, "width" corresponds to the dimension from the left to the right, and "depth" corresponds to the dimension from the front to the back. They are relative concepts and may therefore change accordingly depending on their different positions and usage states. Therefore, these or other orientations should not be construed as restrictive terms.

[0092] Terms related to attachment, connection, etc. (e.g., "connect" and "attach") refer to the relationship in which these structures are directly or indirectly fixed or attached to each other through an intermediate structure, as well as a movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0093] According to an embodiment of the present invention in combination with Figure 1 and Figure 2 as shown, it can be seen that the bladeless fan includes:

[0094] A filtering device (10) having a hollow interior and forming an accommodation space (150);

[0095] A base (20) disposed directly below the filtering device (10);

[0096] A nozzle device (30) disposed directly above the filtering device (10); and

[0097] An air flow generating device (40); which is disposed in the accommodation space formed by the filtering device (10);

[0098] Wherein the nozzle device (30), the air flow generating device (40), the filtering device (10) and the base (20) are coaxially arranged in sequence from top to bottom, and the nozzle device (30) is detachably connected to the filtering device (10);

[0099] According to Figure 3 as shown, it can be seen that the filtering device 10 includes:

[0100] A filtering frame 120 disposed on the innermost layer of the filtering device 10;

[0101] A filtering structure 110 is concentrically sleeved outside the filtering frame 120;

[0102] Wherein, at least two groups of the filtering structures 110 surround the filtering frame 120, and at least two groups of connecting components 130 are provided at the intersection interfaces of every two of the filtering structures 110. When the filtering structures 110 are removably mounted on the filtering frame 120 through the connecting components 130, every two of the filtering structures 110 are detachably connected through the connecting components 130.

[0103] In a specific embodiment, the spray head device 30 is specifically threadedly connected to the filtering frame 120 of the filtering device 10, and the filtering structure 110 wraps the threaded connection portion near the filtering frame 120.

[0104] The filtering frame 120 includes at least two groups of arched frames 125, and every two of the arched frames 125 are wrapped and combined to form a receiving space 150 at the concave surface of the arched frames 125;

[0105] At least two groups of clamping components 130 are provided at the combination interfaces of every two of the arched frames 125;

[0106] Wherein, the number of the filtering frames 125 is consistent with the number of the filtering structures 110, and each group of the filtering structures 110 is removably mounted on a corresponding group of the arched frames 125.

[0107] Now, according to Figure 4 、 Figure 5 A detailed explanation of the arched frame 125 is given. The arched frame 125 has two straight sides 121 and two curved ends 122. The straight sides 121 are parallel to the longitudinal axis of the arched frame 125, and the curved ends 122 are perpendicular to the longitudinal axis of the arched frame 125.

[0108] An end flange 1221 is connected to each of the curved ends 122. The end flange 1221 is combined with the curved end 122 on the outer periphery of the curved end 122 and protrudes radially outward along the arched frame 125;

[0109] A side flange 1211 is connected to each of the straight sides 121. The side flange 1211 is combined with the straight side 121 on the outer periphery of the straight side 121 and protrudes radially outward along the arched frame 125;

[0110] The side flange 1211 is connected to the end of the end flange 1221 at its end to form a ridge around the edge of the arched frame 125, and the filtering structure 110 is disposed in the space surrounded by the ridge.

[0111] Now in combination with Figure 1 , the shown filtering structure 110 includes a filter net 111, and a guiding structure 123 for guiding the filter net 111 to be installed or removed along the radial direction of the filtering frame 120 is provided between each group of the filter nets 111 and the filtering frame 120.

[0112] Both ends of the filter net 111 are connected with filter skirt parts 112. The filter skirt parts 112 are combined with the filter net 111 on the inner circumference of the filter net 111 and bulge radially inward along the filter net 111. When the filter net 111 is removably installed on a corresponding group of the arched frames 125, the filter skirt parts 112 and the end flanges 1221 at least partially overlap.

[0113] The guiding structure 123 includes:

[0114] At least two guiding rib parts 1231, which are disposed on the end flange 1221; and

[0115] At least two guiding parts 1232, which are disposed on the filter skirt part 112 and are opposite to the guiding rib parts 1231,

[0116] wherein, the extending direction of the guiding rib part 1231 is consistent with the installation direction of the filter net 111, and the guiding part 1232 is adapted to the guiding rib part 1231.

[0117] Now referring to Figure 6 , the clamping assembly 130 includes:

[0118] A clamping bar 131, the left and right sides of which are attached to the mating interface of two adjacent arched frames 125;

[0119] At least one clamping platform 132, which is disposed at the end of the clamping bar 131. Both ends of the clamping platform 132 protrude from the clamping bar 131 and are mounted on two adjacent arched frames 125; and,

[0120] At least one clamping hook 133, which is located on the surface of the clamping bar 131 facing the accommodating space. The clamping hook 133 is U-shaped, and the cross-sectional areas of both ends of it gradually decrease along its protruding direction. The clamping hook 133 fixes the clamping bar 131 on the arched frame 125.

[0121] A locking component 140 for selectively clamping the two is provided between the filtering framework 120 and the filtering component 110.

[0122] In a preferred embodiment, the guiding rib portion 1231 and the end flange 1221 are integrally formed. A chamfer is provided at the position where the guiding rib portion 1231 is located at the edge of the end flange 1221, aiming to prevent wear of the guiding rib portion 1231 and the guiding portion 1232 during use. Referring again to Figure 5 , at least two guiding blocks 12321 are formed above the filter skirt portion 112. In a preferred embodiment, the two guiding blocks 12321 are symmetrically distributed with respect to the locking hole 421, and the guiding portion 1232 is formed at the corresponding edge of the guiding block 12321. The width of the guiding portion 1232 gradually increases outward from the intersection of the filter skirt portion 112 and the filter net 111, forming a trumpet-shaped guiding portion from the inside to the outside. The cross-section of the arched framework 125 is semicircular or fan-shaped, and the shape of the filter net 111 matches that of the arched framework 125. Therefore, the shape of the guiding block 12321 is consistent with the shape of the filter skirt portion 112. The guiding rib portion 1231 cooperates with the outer edge of the guiding block 12321, and the guiding rib portion 1231 cooperates with the inner edge of the guiding block 12321, aiming to enable the filter net 111 to be butted and installed more smoothly and stably when moving away from or approaching the arched framework 125.

[0123] A locking component 140 for selectively clamping the two is provided between the filter skirt portion 112 and the end flange 1221. The locking skirt portion 141 of the locking component 140 protrudes from the surface of the locking plate and extends out of the locking hole 1121 to achieve the locking and fastening effect, aiming to further reinforce the filter net 111 on the arched framework 125. When the filter net 111 approaches the filtering framework 120, the locking component 140 is squeezed by the filter skirt portion 112, and the root of the locking component 140 rotates downward until the highest point of the locking skirt portion 140 extends into the locking hole 1121 and is locked; when the filter net 111 moves away from the filtering framework 120, the user only needs to press the locking skirt portion 141 and push the filter net 111 to an appropriate position.

[0124] Combined with Figure 7 、 Figure 8 , the base 20 includes:

[0125] A fixed layer 230, which is arranged at the bottommost part of the bladeless fan;

[0126] A rotating layer 220, which is located above the fixed layer 230;

[0127] Among them, the rotating layer 220 and the fixed layer 230 are coaxially arranged. A transmission component 250 is provided inside the rotating layer 220. At least one set of control components 260 and support components 270 are provided between the rotating layer 220 and the fixed layer 230.

[0128] Straight partitions 221 are provided on the upper end surfaces of the fixed layer 230 and the rotating layer 220 at intervals.

[0129] and circumferential partitions 231;

[0130] Among them, the straight partitions 221 are radially arranged in a radial direction from the center of the fixed layer 230 and the rotating layer 220.

[0131] The circumferential partitions 231 are concentric circles in the radial direction.

[0132] The straight partitions 221 and the circumferential partitions 231 are cross - arranged in the same plane to form a mesh - like partition layer. While ensuring the structural stress strength, the partition layer saves materials and also plays a certain waterproof role.

[0133] A base baffle 210 is provided on the periphery of the fixed layer 230 and the rotating layer 220;

[0134] Among them, the base baffle 210 wraps the fixed layer 230 and the rotating layer 220. A switch button 211 is provided on the base baffle 210. The surface of the fixed layer 220 facing the ground is provided with support feet arranged in a circumferential array to support the bladeless fan without direct contact with the ground, making the bladeless fan more stable.

[0135] Now referring to Figure 9 、 Figure 10 and Figure 11 , the transmission component 250 further includes a stepper motor 251 and a gear set;

[0136] Among them, the gear set includes a large gear 252 and a small gear 253. The stepper motor 251 is installed on the small gear 253, and the large gear 252 is installed on the rotating shaft 1232 of the rotating layer 220.

[0137] The large gear 252 is provided with a support column 273. At least part of a spring is provided on the support column 273, and its end is a smooth round head. Part of the spring provided on the support column 241 can move up and down in the axial direction along with the vibration in the axial direction generated by the driving device 250 to relieve the vibration in the axial direction brought by the driving device 250.

[0138] On the surface of the large gear 252 of the gear set facing the fixed layer 230, smooth grooves 274 are arranged in a circumferential array;

[0139] The close arrangement and smooth transition between the smooth grooves 274 can ensure the smooth rotation of the rotating layer 220;

[0140] The smooth grooves 274 cooperate with the ends of the support columns 273. The smoothness of the smooth round heads and the smooth grooves reduces the wear degree of the support columns 273 when the driving device 251 works, increasing the service life; the cooperation between the smooth grooves 274 and the support columns 273 also fixes the direction of the bladeless fan to a certain extent, preventing it from sliding randomly; the smooth transition between two adjacent smooth grooves 274 ensures that the bladeless fan does not get stuck during rotation.

[0141] Now referring to Figure 13 , a base surface 263 is provided above the rotating layer 220;

[0142] The base surface 263 is coaxially arranged with the rotating layer 220 and has the same shape as the rotating layer 220.

[0143] The edge of the base surface 263 is tightly combined with the bottom edge of the filter device 10 of the bladeless fan; an intake space 261 is formed between the base surface 263 and the base 20. Since the filter device 10 of the bladeless fan does not directly contact the base 20, the outside air flows in through the intake space 261. Because part of the driving device 251 is exposed to the intake space 261, under the action of the flowing air, part of the heat generated by the driving device 251 can be taken away, reducing the temperature and improving the working efficiency of the driving device 251.

[0144] Combined with Figure 11 , Figure 12 , it can be seen that the control component 260 includes;

[0145] A central Hall element 261, which is on the same straight line as the stepping motor 251 and the rotating shaft 1232;

[0146] An edge Hall element 240, which is centered on the rotating shaft 1232 and is at the 1 / 2 maximum rotation angle on one side.

[0147] Hall magnets 262 are respectively arranged below the central Hall element 261 and the edge Hall element 240.

[0148] Preferably, a Hall magnet 262 is provided below the initial positions of the central Hall element 261 and the edge Hall element 240 respectively. When the central Hall element 261 and the edge Hall element 230 are above the Hall magnet 220, the main control chip of the whole machine can receive the signal and issue an instruction.

[0149] In a specific embodiment, the fan swing mechanism has the function of correcting the step loss of the stepping motor 251 through the central Hall element 261. When the central Hall element 261 detects a magnetic signal, it is regarded that the pinion 120 is at the center of the fan-shaped trajectory. The edge Hall element 240 has the function of eliminating the failure of the swing function. When the edge Hall element 240 detects a magnetic signal, it is regarded that the pinion 253 is at the edge of the fan-shaped trajectory. The main control chip of the whole machine can output different instructions according to the signals of different Hall elements received in the control component 260, thereby avoiding the failure situation and improving the swing centering accuracy.

[0150] The support assembly 270 includes a plain bearing 272 and a bearing seat 271;

[0151] Wherein, the plain bearing 272 is arranged on the lower end surface of the rotating layer 220, and the bearing seat 271 is arranged on the upper end surface of the fixed layer 220.

[0152] A trigger switch 211 is installed on the base 20, and the trigger switch 211 is used to detect whether the nozzle device 30 is installed to control the startup of the whole machine.

[0153] Now referring to Figure 14 、 Figure 15 , the method steps for the Hall element to control the rotation of the bladeless fan are as follows:

[0154] Step S1, the stepping motor 251 of the transmission assembly 250 is started, driving the rotating layer 220 and thus driving the fan to rotate;

[0155] Further, in step S2, the transmission assembly 250 rotates 1500 steps;

[0156] Further, in step S3, whether the central Hall element 261 of the control component 260 detects a magnetic signal;

[0157] Further, in step S4, when the central Hall element 261 of the control component 260 detects a magnetic signal, step 5 is entered, and the stepper motor 251 of the transmission component 250 continues to rotate 1000 steps; when the central Hall element 261 of the control component 260 does not detect a magnetic signal in step 4, step S5 is entered. Since the central Hall element 261 does not detect a magnetic signal, the stepper motor 251 continues to move forward until the edge Hall element 240 of the control component 260 detects a magnetic signal, preventing the head shaking function from failing;

[0158] Further, in step S6, enter the execution loop program to control and use the fan head shaking mechanism.

[0159] The loop program includes the following steps:

[0160] Step P1, the stepper motor 251 rotates in reverse;

[0161] Further, in step P2, the stepper motor 251 rotates reversely 1500 steps;

[0162] Further, in step P3, the central Hall element 261 detects a magnetic signal;

[0163] Further, in step P4, after the stepper motor 251 continues to rotate 1500 steps, enter;

[0164] Step P5, the stepper motor 251 rotates in reverse again;

[0165] Further, in step P6, the stepper motor 251 continues to rotate 1500 steps;

[0166] Further, in step P7, the central Hall element 261 detects a magnetic signal;

[0167] Further, in step P8, the stepper motor 251 continues to rotate 1000 steps;

[0168] Step P9, repeat steps P1 - P8, and the loop program is executed cyclically to realize the head shaking action of the fan head shaking mechanism.

[0169] Combined with Figure 16 、 Figure 17 and Figure 18 as shown, the nozzle device 30 includes:

[0170] A flow splitting device 310, which is provided with at least two flow splitting channels;

[0171] A nozzle front shell 360;

[0172] A nozzle rear shell 370, whose shape and size match those of the nozzle front shell 360;

[0173] Among them, the flow splitting device 210 is arranged in an air flow channel 372 formed by the combination of the front nozzle housing 360 and the rear nozzle housing 370.

[0174] Now referring to Figure 19 , Figure 20 , Figure 21 and Figure 22 the flow splitting device 310 includes:

[0175] A first member 311, which is hollow inside and forms a connection space 31111;

[0176] The first member 311, the first member 311 wraps the second member 312. At least four support members 3112 are provided around the outside of the first member 311, which are used to mount the flow splitting device inside the bladeless fan body. The first member 311 extends downward to form a connection member 3113. Referring to Figure 16 It can be seen that the connection member 3113 is used to connect the air flow generating device 40 of the bladeless fan, so that the air flow in the body can smoothly enter the flow splitting device 30.

[0177] A second member 312, the inside of which is recessed and coaxially mounted on the first member 311,

[0178] Among them, the second member 312 is provided with at least two annular flow splitting openings 3121 as shown in Figure 18 . The annular flow splitting openings 3121 extend into and are closely attached to the air flow channel 372, so that the air flow can smoothly enter the air flow channel 372, avoiding the formation of noise when the air flow quickly enters the long and narrow nozzle, and improving the user experience.

[0179] The first member 311 wraps the second member 312, the first member 311 is adapted to the second member 312 and a flow splitting space is formed between the first member 311 and the second member 312.

[0180] The bottom of the second member 312 is recessed downward to form a bottom groove 3123;

[0181] As shown in Figure 20 , a bottom bump 3124 is provided in the bottom groove 3123;

[0182] The bottom edge of the second member 312 is provided with a bottom edge groove 350.

[0183] In the specific implementation manner, at least four support seats 3126 are provided above the bottom bump 3124. The support seats 241 are used to support the front nozzle housing 360 and the rear nozzle housing 370, reducing the wear between the front nozzle housing 360 and the rear nozzle housing 370 and the flow dividing device 310, and further improving its service life.

[0184] The shape of the air flow channel 372 is variable and has multiple angles. Although the annular flow dividing opening 210 extends into and closely adheres to the air flow channel 372, gaps will still be generated due to the multiple angles of the air flow channel 372, causing the air flow entering from the annular flow dividing opening 3121 to return to the inside of the bladeless fan, resulting in insufficient intensity of the ejected air flow and possibly causing noise. A sealing ring 323 is provided on the periphery of the annular flow dividing opening 210. It has multiple angles, is closely attached to the annular flow dividing opening 3121 on the inner side, and is closely attached to the air flow channel 372 on the outer side. It can effectively block the gas from flowing back and prevent the air flow from diffusing around. It not only improves the intensity of the air flow but also reduces the noise, further enhancing the user experience.

[0185] In a specific embodiment, the arrangement of the annular flow dividing openings 3121 can be that at least two annular flow dividing openings 3121 are arranged side by side with intervals on the second component 20, or they can be arranged in a circumferential array around the central axis of the second component 312. Among them, the number of the first component 311 and the second component 312 is consistent with the number of the provided annular flow dividing openings 3121.

[0186] According to Figure 24 、 Figure 25 As shown, the flow dividing device 310 includes:

[0187] A first sealing ring 321, which is arranged on the outer side of the flow dividing device;

[0188] A second sealing ring 322, which is arranged on the inner side of the flow dividing device;

[0189] An annular sealing ring 323, which is arranged on the periphery of the annular flow dividing opening 3121.

[0190] Among them, the first sealing ring 321 is used to seal the gap between the air flow generating device 20 and the outer side of the flow divider 10, and the second sealing ring 322 is used to seal the gap between the air flow generating device 20 and the inner side of the flow divider 10; the support member 340 is connected to the first sealing ring 321 to fix the sealing and damping device in the bladeless fan.

[0191] The first sealing ring 321 and the second sealing ring 322 prevent the shunt device 310 from directly contacting the air flow generating device 20. The first sealing ring 321 and the second sealing ring 322 block the vibration conduction of the air flow generating device 20, enabling the shunt device 310 to remain stable. The first sealing ring 321 and the second sealing ring 322 are preferably made of rubber.

[0192] The upper and lower ends of the first sealing ring 321 extend inwards along the center of the first sealing ring 321 and do not touch, forming a claw structure 3211.

[0193] On the upper part of the outer side of the first sealing ring 321, there are T-shaped buckle structures 3214 arranged in a circumferential array.

[0194] On the lower part of the outer side of the first sealing ring 321, a lower flange 3212 is connected. There is a certain gap between the lower flange 3212 and the first sealing ring 321, forming a groove 3213.

[0195] The T-shaped buckle structure 3214 is adapted to the clamping groove 3431. The lower part of the supporting skirt 343 at least partially overlaps with the groove 3213 of the first sealing ring 321. Among them, the longitudinal part of the T-shaped buckle structure 3214 is integrally formed with the first sealing ring 321. Designing the outer side of the first sealing ring 321 with a T-shaped buckle structure 3214 in the upper part and a groove 3213 in the lower part enables the cross-connection of the first sealing ring 321 and the supporting member 340, ensuring the stability of the first sealing ring 321.

[0196] According to Figure 26 As shown, at least two supporting feet 3221 are provided at the lower part of the second sealing ring 322. The upper part of the second sealing ring 322 is adapted to the bottom edge groove 350. The supporting feet 3221 are connected to the upper end surface of the air flow generating device 20. The upper part of the second sealing ring 322 can ensure its tight connection with the shunt 10. Due to the setting of the supporting feet 3221 at the lower part of the second sealing ring 322, when the shunt device 310 vibrates up and down due to the vibration conduction of the air flow generating device 20, the supporting feet 3221 will deform due to the vibration, playing a certain role in alleviating the vibration and increasing the service life of the shunt device 310.

[0197] Now referring to Figure 23 , the shunt device 310 includes:

[0198] A supporting member 340, whose outer side extends axially downwards to form an external flange 341.

[0199] An inner side of the support member 340 extends axially downward to form an inner flange 342, and a lower end of the inner flange 342 is connected to a support skirt 343;

[0200] An upper portion of the support skirt 343 and an inner side of the support member 340 form a clamping groove 3431.

[0201] Wherein, the clamping groove 3431 is adapted to a T-shaped snap structure 3214 on the first sealing ring 321, a lower portion of the support skirt 343 at least partially overlaps with a groove 3213 of the first sealing ring 321, and an upper end surface of the support member 340 is fixedly connected to the flow dividing device 310, further stabilizing the flow dividing device 310, and also enabling the flow dividing device 310 to be tightly combined with the first sealing ring 321, the second sealing ring 322 and the air flow generating device 20, improving the sealing performance and shock absorption performance of the sealing and shock absorption device.

[0202] In a specific embodiment, the first sealing ring 321, the second sealing ring 322 and the buffer assembly 120 can each play a shock absorption role and can be freely combined or used alone; the first sealing ring 321 and the second sealing ring 322 can respectively freely select to closely contact the flow dividing device 310 and the air flow generating device 20 on the upper and lower surfaces, or one side of the first sealing ring 321 and the second sealing ring 322 closely contacts the flow dividing device 310 and the air flow generating device 20 for sealing; the first sealing ring 321 can also be directly connected to the bladeless fan and the flow dividing device 310 without arranging the support member 340.

[0203] Now referring to Figure 27 , it can be seen that the nozzle front shell 360 and / or the nozzle rear shell 370 are provided with nozzles 361 at intervals such that an air flow channel 372 as shown in Figure 17 is communicated with the outside through the nozzles 361,

[0204] wherein, the nozzles 361 are symmetrically distributed left and right on the nozzle front shell 360 and / or the nozzle rear shell 370.

[0205] The nozzle front shell 360 and the nozzle rear shell 370 each include two vertical sections 364 and a curved section 363;

[0206] Among them, the bent section 363 connects the upper ends of the two vertical sections 364. The lower ends of the vertical sections 364 extend downward and inward pairwise to form a hollow convex part, which forms an accommodation space in a surrounding form. The accommodation space is used to store the flow dividing device 310 of the bladeless fan, so as to save structural space and can also make the flow dividing device 310 closely fit with the front nozzle housing 360, ensuring that the air flow smoothly enters the rear nozzle housing 370.

[0207] The bent section 363 connects the two vertical sections 364, and a blocking component 373 is provided at the connection between the bent section 363 and the vertical section 364; a blocking baffle 373 is provided at the connection between the bent section 363 and the vertical section 364. The blocking baffle 373 is integrally formed with the bent section 363 and the vertical section 364. The blocking baffle 373 can effectively prevent the air flow from being transmitted upward to the top of the nozzle, solve the problem that the air flow in the bent section 363 has a circular flow direction, resulting in air flow collision, uneven distribution of the air flow in the channel, and further affecting the uniformity of the air flow injection.

[0208] According to Figure 28 、 Figure 29 As shown, a nozzle protrusion 371 is provided on the surface of the front nozzle housing 360 facing the rear nozzle housing 370.

[0209] A nozzle groove 365 is provided on the surface of the rear nozzle housing 370 facing the front nozzle housing 360;

[0210] Among them, the nozzle groove 365 matches the nozzle protrusion 371 to form a concave-convex structure 391.

[0211] There is a concave-convex structure 390 between the front nozzle housing 360 and the rear nozzle housing 370. A protrusion 371 is provided on the surface of the front nozzle housing 360 facing the rear nozzle housing 370, and a groove 365 is provided on the surface of the rear nozzle housing 370 facing the front nozzle housing 360. Among them, the groove 365 matches the protrusion 371, and the two are assembled with glue between the concave-convex structures 390 to enhance the tightness between the front nozzle housing 360 and the rear nozzle housing 370.

[0212] Among them, in a specific implementation manner, the installation positions of the protrusion 371 and the groove 365 can be interchanged or used crosswise.

[0213] Now referring to Figure 30 、 31 As shown, a lining structure 380 is provided in the front nozzle housing 360;

[0214] Among them, the lining structure 380 at least overlaps with the front nozzle housing 360.

[0215] As shown in combination with Figure 32 and Figure 33 the lining structure 380 includes:

[0216] A lining plate 381, which is formed by the intersection of one ends of a left lining plate 3811 and a right lining plate 3812, and is integrally V-shaped;

[0217] Air outlet openings 3815 are provided at intervals at the intersection of the left lining plate 1311 and the right lining plate 1312;

[0218] The air outlet openings 3815 are consistent with the nozzle 361 in terms of quantity, shape and position.

[0219] In a specific embodiment, when the outside air flow enters the inside of the bladeless fan through the lower filtering device 20 of the bladeless fan, the air flow is driven by the driving device inside to flow upward and enter the air flow channel 372 formed by the nozzle front shell 360 and the nozzle rear shell 370. When the air flow flows from the flow dividing device 310 into the air flow channel 372, due to the large wind force of the air flow, the air flow will rush towards the bent section 363, and the blocking baffle 373 blocks the air flow, making it return downward to the vertical section 364, reducing the energy loss of the air flow. The air flow collides within the vertical section 364, and the air flow is ejected from the nozzle 361; only when the wind force of the air flow is strong when it is discharged from the bladeless fan, the nozzle 361 is preferably rectangular and the nozzle 361 is arranged at intervals on the two vertical sections 364, so that when the air flow is discharged from the bladeless fan, it is smoother, and its structure is simple, easy to install, reduces wear during disassembly or installation, and improves its service life.

[0220] Since the lining plate 381 is provided in the vertical section 364 of the nozzle front shell 360 and is V-shaped, the air flow enters from the large opening of the V shape and is discharged from the small opening. The lining plate 381 is provided to avoid the problem of whistling and noise caused by the unsmooth air flow due to the roughness and roughness of the nozzle front shell 360.

[0221] Because the angle of the lining plate 381 is smaller than the angle of the nozzle front shell 360, the internal space of the air flow channel 372 becomes smaller. When the air flow rapidly enters the air flow channel 372 from the lower filtering device 10 of the bladeless fan, a pressure difference will be generated, making the air flow discharged from the bladeless fan stronger and accelerating the discharge of the air flow.

[0222] According to Figure 34 and Figure 35As shown, the deflector 382 is located in the diversion air duct 383 formed by the left liner 3811 and the right liner 3812, and the diversion air duct 383 is communicated with the nozzle 361;

[0223] The deflector 382 includes a diversion front part 3821 and a diversion rear part 3822;

[0224] The surface of the diversion front part 3821 facing the diversion rear part 3822 is provided with a diversion groove 38211;

[0225] The surface of the diversion rear part 3822 facing the diversion front part 3821 is provided with a diversion flange 38221;

[0226] Wherein, the diversion flange 13221 and the diversion groove 13211 are used in cooperation. Preferably, the diversion front part 3821 and the diversion rear part 3822 are solid; since there will be gaps due to the hollow interior of the deflector 382 and it is formed by splicing the diversion front part 3821 and the diversion rear part 3822, resulting in noise, if the deflector 382 is solid, the generation of noise can be reduced.

[0227] The cross-section of the deflector 382 is in the shape of a water droplet, and the deflector 382 is connected to the front part of the nozzle 361 through the liner 381;

[0228] Wherein, the major axis of the cross-section of the deflector 382 is collinear with the central axis of the air outlet 3815;

[0229] Now refer to Figure 33 , at least two hooks 3813 are provided between the air outlets 3815, and the cross-sectional area of the hook 3813 gradually decreases along the protruding direction; a slot 3817 is formed between the hooks 3813. Wherein, the slot 3817 is adapted to the interval structure 362 between the nozzles 361 arranged at intervals. Wherein, the slot 3817 is adapted to the interval structure 362 between the nozzles 361 arranged at intervals, so that while the liner 381 is fixed to the front shell 310 of the nozzle by the locking structure 3814, the liner 381 is further fixed, improving its stability and increasing the service life of the liner 381.

[0230] The air flow generating device 40 includes:

[0231] Now refer to Figure 36 , a drainage pipe 440, which is hollow inside and both the upper and lower ends are open to form an upper opening and a lower opening respectively;

[0232] A power chamber 470, which is arranged in the drainage pipe 440 at intervals and coaxially to form an annular drainage cavity 450 located between the drainage pipe 440 and the power chamber 470.

[0233] The annular drainage chamber 450 is provided with a rotating impeller 420 coaxially arranged with the drainage tube 440, and the power chamber 470 is provided with an impeller driver 430, and the power output end of the impeller driver 430 is transmission-connected with the rotating impeller 420, so that the rotating impeller 420 is driven by the impeller driver 430 to rotate around the axis of the drainage tube 440.

[0234] A fixing assembly for fixing the power chamber 470 is fixedly connected between the power chamber 470 and the drainage pipe 440 . The fixing assembly is arranged upstream of the airflow in the drainage pipe 440 .

[0235] The fixed component is at least two guide vanes 441 fixedly connected between the power chamber 470 and the guide pipe 440 . In a specific embodiment, the rotating impeller 420 is located at the lower opening of the guide pipe 440 , and the guide vanes 441 are located at the upper opening of the guide pipe 440 .

[0236] The guide blade 441 can correct the flow direction of the airflow that is deflected after being driven by the rotating impeller 420. The deflection direction of the rotating impeller 420 causes the airflow to flow upward in a vortex shape clockwise or counterclockwise. The deflection direction of the guide blade 441 is opposite to the deflection direction of the rotating impeller 420. The airflow rotating clockwise or counterclockwise is guided in the opposite deflection direction of the guide blade 441, so that the corrected airflow flow direction is consistent with the axial direction of the drainage pipe 440, thereby improving the smoothness of the airflow and reducing the generation of noise.

[0237] Reference Figure 37 The guide blade 441 includes an inlet section 4411 and an outlet section 4412 which are arranged in sequence along the flow direction of the airflow. The curvature radius of the inlet section 4411 is set so that the flow direction of the airflow before correction is consistent with the tangent direction at the entrance of the inlet section 4412, and the curvature radius of the inlet section 4411 is smaller than the curvature radius of the outlet section 4412. The inlet section 261 and the outlet section 262 are smoothly transitioned, which further solves the problem of noise generated by the unsmooth flow of the airflow.

[0238] The lower opening of the drainage pipe 440 is formed in sequence along the direction opposite to the airflow direction:

[0239] A converging section 411, whose cross-sectional diameter gradually decreases in the direction opposite to the air flow direction, and a diverging section 410, whose cross-sectional diameter gradually increases in the direction opposite to the air flow direction; the overall cross-sectional area of the drainage pipe 440 first gradually decreases and then gradually increases along the air flow direction. The diverging section 411 has the advantage of increasing the air intake volume. A large amount of air flow accumulates in the diverging section 411. Since the intersection of the converging section 410 and the diverging section 411 is the place with the smallest interface diameter. Before entering the diverging section 411 or when entering the diverging section 411, the air flow movement follows the principle that "when a fluid moves in a pipe, the flow velocity is high at a small cross-section and low at a large cross-section". Therefore, the air flow continuously accelerates. When reaching the narrow throat, the flow velocity has exceeded the speed of sound. However, when a transonic fluid moves, it no longer follows the principle that "the flow velocity is high at a small cross-section and low at a large cross-section", but on the contrary, the larger the cross-section, the faster the flow velocity, which enhances the flow velocity of the air flow entering the flow splitting device 310 and improves the user experience.

[0240] As shown in combination with Figure 38 、 Figure 39 , the air flow generating device 40 includes:

[0241] A support ring 480, whose inner circle extends downward along the axial direction to form an inner skirt 481;

[0242] At least three first cylindrical grooves 482 are arranged at intervals on the upper end surface of the support ring 480. The first cylindrical grooves 482 protrude from the support ring 480, and the first cylindrical grooves 482 are integral with the support ring 480.

[0243] The lower end surface of the support ring 480 is in close contact with the upper end surface of the support structure 461. The support structure 461 plays a further supporting role for the air flow generating device 40, thereby further enhancing the stability of the air flow generating device 40.

[0244] The air flow generating device 40 includes:

[0245] A shock absorber 460, which is a cylindrical groove;

[0246] Wherein, the diameter of the shock absorber 460 is smaller than that of the first cylindrical groove 482, and it is sleeved in the first cylindrical groove 482, and its quantity is the same as that of the first cylindrical groove 482.

[0247] The outer peripheral skirt 497 arranged in a circumferential array is spaced around the outer shell of the air flow generator 20;

[0248] The lower end surface of the outer peripheral skirt portion 497 is provided with at least three shock-absorbing feet 4911, and the cross-sectional area of the shock-absorbing feet 4911 gradually decreases along its extending direction;

[0249] Wherein, the shock-absorbing feet 4911 are sleeved in the shock-absorbing member 490, and the number thereof is the same as that of the shock-absorbing member 490.

[0250] The shock-absorbing feet 4911 are tightly combined with the shock-absorbing member 490 and the first cylindrical groove 482. The tight combination of the shock-absorbing feet 4911 with the shock-absorbing member 490 and the first cylindrical groove 482 reduces the lateral vibration generated during the operation of the air flow generating device 40, and stabilizes the stability of the air flow generating device 40 in the lateral direction.

[0251] In a specific embodiment, the assembling method of the bladeless fan includes the following steps:

[0252] Step S1, the base 20 is fixedly installed directly below the filter frame 120 of the filter device 10;

[0253] Step S2, the air flow generating device 40 is installed in the accommodation space of the filter device 10;

[0254] Step S3, each component in the spray head device 30 is installed;

[0255] Step S4, a detachable connection component is provided between the spray head device 30 and the filter device 10;

[0256] Step S5, the filter assembly 110 of the filter device 10 is moved radially towards the filter frame 120 until it covers the detachable connection.

[0257] The equipment quantity and processing scale described here are used to simplify the description of the present invention. The applications, modifications and variations of the present invention are obvious to those skilled in the art.

[0258] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those skilled in the art, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A bladeless fan, characterized in that, it includes: A filtering device (10) with a hollow interior, forming a receiving space (150); A base (20) disposed directly below the filtering device (10); A nozzle device (30) disposed directly above the filtering device (10); And An air flow generating device (40); which is disposed in the receiving space formed by the filtering device (10); Wherein the nozzle device (30), the air flow generating device (40), the filtering device (10) and the base (20) are coaxially arranged in sequence from top to bottom, and the nozzle device is threadedly connected to the filtering device; The nozzle device (30) includes: A flow splitting device (310) having at least two flow splitting channels; A nozzle front shell (360); A nozzle rear shell (370) whose shape and size match those of the nozzle front shell (360); wherein, the flow splitting device (310) is disposed in the air flow channel (372) formed by the combination of the nozzle front shell (360) and the nozzle rear shell (370); The flow splitting device (310) includes a first member (311), and the first member (311) extends downward to form a connecting part (3113), and the connecting part (3113) is connected to the air flow generating device (40); The flow splitting device (310) includes: A first member (311) with a hollow interior; and A second member (312) with a concave interior and coaxially mounted on the first member (311), wherein, the second member (312) is provided with at least two annular flow splitting openings (3121), the first member (311) wraps the second member (312), the first member (311) is adapted to the second member (312) and a flow splitting space is formed between the first member (311) and the second member (312).

2. The bladeless fan according to claim 1, characterized in that, the filtering device (10) includes: A filtering frame (120) disposed in the innermost layer of the filtering device (10); A filtering structure (110) concentrically sleeved outside the filtering frame (120); wherein, at least two groups of the filtering structures (110) surround the filtering frame (120), and at least two groups of connecting components (130) are provided at the intersecting interfaces of every two of the filtering structures (110). When the filtering structures (110) are removably mounted on the filtering frame (120) through the connecting components (130), every two of the filtering structures (110) are detachably connected through the connecting components (130).

3. The bladeless fan according to claim 2, characterized in that, the filtering frame (120) includes at least two groups of arched frames (125), and every two of the arched frames (125) are wrapped and combined to form the receiving space (150) at the concave surface of the arched frame (125); at least two groups of clamping components (130) are provided at the combining interfaces of every two of the arched frames (125); Wherein, the number of the arch-shaped frames (125) is consistent with the number of the filter structures (110), and each group of the filter structures (110) is removably mounted on a corresponding group of the arch-shaped frames (125).

4. The bladeless fan according to claim 1, characterized in that the base (20) comprises: a fixed layer (230) provided at the bottommost part of the bladeless fan; a rotating layer (220) located above the fixed layer (230); wherein, the rotating layer (220) and the fixed layer (230) are coaxially arranged, a transmission assembly (250) is provided in the rotating layer (220), and at least one group of control components (260) and support components (270) are provided between the rotating layer (220) and the fixed layer (230).

5. The bladeless fan according to claim 4, characterized in that the transmission assembly (250) further comprises a stepper motor (251) and a gear set; wherein, the gear set includes a large gear (252) and a small gear (253), the stepper motor (251) is mounted on the small gear (253), and the large gear (252) is mounted on the rotating shaft of the rotating layer (220).

6. The bladeless fan according to claim 5, characterized in that the control component (260) includes; a central Hall element (261) which is on the same straight line as the stepper motor (251) and the rotating shaft; an edge Hall element (240); Hall magnets (262) are respectively provided below the central Hall element (261) and the edge Hall element (240).

7. The bladeless fan according to claim 1, characterized in that a trigger switch (211) is mounted on the base (20).

8. The bladeless fan according to claim 1, characterized in that a nozzle protrusion (371) is provided on the surface of the front nozzle housing (360) facing the rear nozzle housing (370); a nozzle groove (365) is provided on the surface of the rear nozzle housing (370) facing the front nozzle housing (360); wherein, the nozzle groove (365) matches the nozzle protrusion (371).

9. The bladeless fan according to claim 1, characterized in that the air flow generating device (40) comprises: a drainage pipe (440) which is hollow inside and has both upper and lower ends open to respectively form an upper opening and a lower opening; a power chamber (470) which is spaced and coaxially arranged in the drainage pipe (440) to form an annular drainage cavity (450) located between the drainage pipe (440) and the power chamber (470).

10. The bladeless fan according to claim 9, characterized in that a rotating impeller (420) coaxial with the drainage pipe (440) is provided in the annular drainage cavity (450), an impeller driver (430) is provided in the power chamber (470), and the power output end of the impeller driver (430) is in transmission connection with the rotating impeller (420).

11. An assembly method for assembling the bladeless fan according to any one of claims 1 to 10, characterized in that it includes the following steps: Step S1, the spray head device (30) is installed directly above the filter frame (120) of the filter device (10); Step S2, a detachable connection component is installed between the spray head device (30) and the filter frame (120) of the filter device (10); Step S3, the filter structure (110) of the filter device (10) is moved closer to the filter frame (120) in the radial direction until the detachable connection is covered.

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