Bladeless fan

Abstract

The application relates to a fan, in particular to a bladeless fan, belonging to household appliances. The bladeless fan comprises a base, a main support assembly arranged above the base, a nozzle assembly arranged on the base, the nozzle assembly being mounted on the main support assembly, a rotating assembly arranged between the main support assembly and the base, and a diffusion air switching assembly arranged on the nozzle assembly, the nozzle assembly comprising two opposite air outlets, the diffusion air switching assembly enabling the air outlets to blow air or be closed, and the nozzle assembly being rotatable relative to the base. The bladeless fan of the application can blow air in different directions when rotating by arranging two opposite air outlets and adopting the diffusion air switching assembly to enable the air outlets to blow air or be closed, so that the switching air receiving area can be increased, and air outlet dead angles can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a fan, in particular to a bladeless fan, belonging to household appliances. BACKGROUND

[0002] Traditional household fan is a blade fan, which generally rotates the blade by motor to accelerate the flow speed of the surrounding air flow, so as to achieve the effect of cooling and air circulation. The blade of the blade fan rotates at high speed during operation, which has certain safety hazards. Compared with the traditional blade fan, the bladeless fan has the characteristics of low noise and good safety. The bladeless fan blows out the high-speed airflow from the nozzle assembly after the air from the outside of the fan passes through the wind wheel assembly. In order to adjust the air outlet direction of the bladeless fan, a rotating assembly is arranged on the base of the bladeless fan, so as to drive the nozzle assembly and the wind wheel assembly fixed thereon to rotate synchronously relative to the base. The air outlet of the current bladeless fan is usually arranged on the same side, and the bladeless fan usually has a rotation dead angle, which causes the problem that the blown air cannot completely cover the indoor space. SUMMARY

[0003] The purpose of the present application is to provide a bladeless fan which can increase the switching wind area and avoid the air outlet dead angle when rotating.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme: a bladeless fan, comprising a base, a main support assembly arranged above the base, a nozzle assembly arranged on the base, a nozzle assembly installed on the main support assembly, a rotating assembly arranged between the main support assembly and the base, and a diffusion wind switching assembly arranged on the nozzle assembly, wherein the nozzle assembly comprises two opposite air outlets, the diffusion wind switching assembly opens or closes the air outlets, and the nozzle assembly can rotate relative to the base.

[0005] Further, the diffusion wind switching assembly comprises a swing assembly and a driving assembly, the driving assembly pushes the swing assembly to move up and down, and the swing member converts the up-and-down movement into forward-and-backward movement to open one of the air outlets and close the other air outlet.

[0006] Further, the nozzle assembly comprises a nozzle inner shell, the swing assembly comprises a pull plate arranged on the nozzle inner shell, a pull rod arranged on the pull plate, and an opening and closing plate arranged on the pull rod, the pull rod is movably arranged on the pull plate, the pull plate can move up and down relative to the nozzle inner shell and drive the pull rod to move towards the air outlet, and the opening and closing plate is fixed on the pull rod and can close and open the air outlet.

[0007] Further, the driving assembly comprises a driving motor and a rotating disc installed at the output end of the driving motor, a dial lever is arranged on the rotating disc, the dial lever is connected with the pull plate and drives the pull rod to move up and down.

[0008] Further, the bladeless fan further comprises a top shell assembly arranged on the nozzle assembly, the nozzle assembly comprises a nozzle shell, a screw seat is arranged at the top end of the nozzle shell, and the top shell assembly is rotationally connected with the screw seat.

[0009] Further, the nozzle inner shell is covered by the nozzle outer shell, the nozzle outer shell is provided with a guide hole, a plug-in convex rib is arranged on the inner wall of the nozzle outer shell and close to the guide hole, and the nozzle inner shell is provided with a plug-in groove matched with the plug-in convex rib.

[0010] Further, the bladeless fan further comprises a wind wheel assembly with an air inlet channel and a flow guide assembly with a flow guide channel, the wind wheel assembly and the flow guide assembly are arranged in the main support assembly, and the flow guide assembly comprises a flow guide cover, and a first damping ring is arranged between the top of the wind wheel assembly and the flow guide cover.

[0011] Further, one of the base and the rotating assembly is provided with a contact, the other of the base and the rotating assembly is provided with a conductive ring, and the contact is electrically connected with the end surface of the conductive ring.

[0012] Further, a transmission assembly is arranged between the base and the nozzle assembly, the nozzle assembly is rotated relative to the base through the transmission assembly, the transmission assembly comprises a ring gear and a pinion meshing with the ring gear, the ring gear is arranged on one of the base and the nozzle assembly, and the pinion is arranged on the other of the base and the nozzle assembly.

[0013] Further, the ring gear is fixed on the base, at least one clamping groove is arranged on the base, a clamping block matched with the clamping groove is arranged on the ring gear, and the clamping block is inserted into the clamping groove at the corresponding position to fix the ring gear on the base.

[0014] The bladeless fan has the advantages that two air outlets opposite to each other are arranged, the air outlets are switched on or off through the diffusion air switching assembly, when the bladeless fan rotates, air can be blown in different directions, the switching air receiving area is increased, and air dead angle is avoided.

[0015] The above description is only a summary of the technical scheme of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, the preferred embodiments of the present application are described in detail as follows with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall explosion schematic view of the bladeless fan in an embodiment of the present application.

[0017] Figure 2 It is a sectional view of the bladeless fan.

[0018] Figure 3 It is a partial enlarged view of the bladeless fan A in Figure 2

[0019] Figure 4 It is a partial enlarged view of the bladeless fan at B in Figure 2

[0020] Figure 5 It is a sectional view of the bladeless fan in another direction.

[0021] Figure 6 It is a partial enlarged view of the bladeless fan at C in Figure 5

[0022] Figure 7 It is a structural schematic view of the inner shell of the nozzle of the bladeless fan of the present application.

[0023] Figure 8 It is an explosion schematic view of the inner shell of the nozzle in Figure 9

[0024] Figure 9 It is a structural schematic view of the second support seat of the bladeless fan of the present application.

[0025] Figure 10 It is a structural schematic view of the nozzle support plate of the bladeless fan of the present application.

[0026] Figure 11 It is an explosion schematic view of the nozzle outer shell and top shell assembly of the bladeless fan of the present application.

[0027] Figure 12 It is an explosion schematic view of the diffusion wind switching assembly of the bladeless fan of the present application.

[0028] Figure 13 It is a structural schematic view of the pull rod of the diffusion wind switching assembly in Figure 12

[0029] Figure 14 It is an explosion schematic view of the top shell assembly of the bladeless fan of the present application.

[0030] ​​​​​Figure 15 for Figure 14 A schematic structural diagram of the top shell cover of the top shell assembly;

[0031] Figure 16 Schematic diagram of an explosion of the wind wheel assembly and the deflector assembly of the bladeless fan of the present invention;

[0032] Figure 17 for Figure 16 A cross-sectional view of the wind wheel assembly and the deflector assembly in FIG.

[0033] Figure 18 for Figure 16 Schematic diagram of the installation of the sealing ring and the deflector housing of the deflector assembly;

[0034] Figure 19 for Figure 17 A partial enlarged view of the deflector assembly at position D;

[0035] Figure 20 for Figure 1 A schematic structural diagram of the base in the first direction;

[0036] Figure 21 for Figure 1 A schematic structural diagram of the base in the second direction;

[0037] Figure 22 for Figure 1 A schematic structural diagram of the base in the fourth direction;

[0038] Figure 23 for Figure 1 A cross-sectional view of the base and filter assembly in another direction;

[0039] Figure 24 for Figure 23 Enlarged view of middle region H;

[0040] Figure 25 for Figure 1 Schematic diagram of the structure of the side strip in FIG;

[0041] Figure 26 for Figure 1 Exploded view of the rotating component in;

[0042] Figure 27 for Figure 1 A schematic structural diagram of the rotating support frame and the second driving member;

[0043] Figure 28 for Figure 1 A schematic structural diagram of the rotating support frame in another direction;

[0044] Figure 29 for Figure 1A cross-sectional view of the rotating assembly, the base and the filter screen assembly;

[0045] Figure 30 A structural schematic view of the shock-absorbing component in Figure 1 A structural schematic view of the shock-absorbing component in

[0046] Figure 31 A structural schematic view of the shock-absorbing component in Figure 20 An enlarged view of region I in

[0047] Figure 32 A structural schematic view of the shock-absorbing component in Figure 1 A structural schematic view of the shock-absorbing component in

[0048] Figure 33 A structural schematic view of the shock-absorbing component in Figure 1 A structural schematic view of the shock-absorbing component in

[0049] Figure 34 A structural schematic view of the shock-absorbing component in Figure 33 A partial exploded view of the shock-absorbing component in

[0050] Figure 35 A structural schematic view of the shock-absorbing component in Figure 33 A structural schematic view of the shock-absorbing component in DETAILED DESCRIPTION

[0051] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments.

[0052] The bladeless fan in a preferred embodiment of the present application can generate one or more of dehumidified air flow, humidified air flow, purified air flow, filtered air flow, cooled air flow and heated air flow. The present application does not limit the air flow generated and delivered by the bladeless fan. Please refer to Figure 1 and Figure 28 The bladeless fan comprises the following components: a base 7, a nozzle assembly 100 arranged on the base 7, a rotating assembly 8 connecting the base 7 and the nozzle assembly 100, a filter screen assembly 9 arranged around the base 7, a fan wheel assembly 200 arranged on the rotating assembly 8, and a flow guide assembly 6, a main support assembly 5 and a top shell assembly 4 arranged on the base 7. The flow guide assembly 6, the main support assembly 5, the top shell assembly 4, the rotating assembly 8, the fan wheel assembly 200 and the nozzle assembly 100 arranged on the base 7 can rotate around the central axis relative to the base 7. The main support assembly 5 is used to support the nozzle assembly 100 and connect the nozzle assembly 100 and the base 7. Specifically, the main support assembly 5 is arranged on the base 7, the nozzle assembly 100 is arranged on the main support assembly 5, the rotating assembly 8 is located between the main support assembly 5 and the base 7, and the fan wheel assembly 200 and the flow guide assembly 6 are arranged in the main support assembly 5.

[0053] The top cover assembly 4, the nozzle assembly 100, the flow guide assembly 6 and the wind wheel assembly 200 are sequentially arranged on the base 7 from top to bottom. The nozzle assembly 100 comprises the diffusion air switching assembly 3, the nozzle assembly 100 is provided with the first air outlet 101 and the second air outlet 102, and the diffusion air switching assembly 3 can switch the first air outlet 101 or the second air outlet 102 so as to make one of the air outlets blow air. The airflow blown by the wind wheel assembly 200 enters the nozzle assembly 100 along the flow guide assembly 6 and is blown out from one of the air outlets. Preferably, the first air outlet 101 and the second air outlet 102 are oppositely arranged.

[0054] In combination Figure 28 and Figure 5 As shown in the figure, the nozzle assembly 100 comprises the nozzle inner shell 1 and the nozzle outer shell 2 covering the nozzle inner shell 1. The inner wall of the nozzle inner shell 1 and the outer wall of the nozzle outer shell 2 are matched to form the air containing cavity 103 which is closed in the relative outer wall, and the flow guide assembly 6 is in communication with the air containing cavity 103. The nozzle inner shell 1 is provided with the first air outlet 104a and the second air outlet 105a which are in communication with the air containing cavity 103, and the first air outlet 104a and the second air outlet 105a are oppositely arranged. The nozzle outer shell 2 is provided with the first air guide hole 211 corresponding to the first air outlet 104a and the second air guide hole 221 corresponding to the second air outlet 105a, and the first air outlet 104a and the first air guide hole 211 cooperatively form the first air outlet 101 of the nozzle assembly 100, and the second air outlet 105a and the second air guide hole 221 cooperatively form the second air outlet 102. In the embodiment, the first air guide hole 211 and the second air guide hole 221 are parallel to the horizontal plane (ground).

[0055] The diffusion air switching assembly 3 is movably arranged on the nozzle inner shell 1 and is contained in the air containing cavity 103, and the diffusion air switching assembly 3 cooperatively forms the first air passage 104 and the second air passage 105 with the nozzle inner shell 1. The first air outlet 104a is located on the first air passage 104, and the second air outlet 105a is located on the second air passage 105, and the diffusion air switching assembly 3 can move towards the first air outlet 104a or the second air outlet 105a so as to selectively block the first air passage 104 or the second air passage 105, thereby realizing the switching of the air outlet. Indeed, the diffusion air switching assembly 3 can also be located at the intermediate position between the first air outlet 104a and the second air outlet 105a, so that the first air passage 104 and the second air passage 105 are both in communication.

[0056] In combination Figure 28 and Figure 7As shown, the nozzle inner shell 1 comprises a first nozzle 11, a second nozzle 12, a first support seat 13 and a second support seat 14. The first nozzle 11 and the second nozzle 12 are inserted and fitted and formed with a wind guide channel 106, both ends of the wind guide channel 106 are communicated with the outside through the first wind guide hole 211 and the second wind guide hole 221. When the airflow generated inside the fan is blown out from the first air outlet 104a or the second air outlet 105a, it can guide the external air to flow along the wind guide channel 106. The first support seat 13 and the second support seat 14 are respectively connected with the upper and lower ends of the first nozzle 11 and the second nozzle 12 and are used for supporting and fixing the first nozzle 11 and the second nozzle 12. The inner wall at the bottom of the nozzle outer shell 2 is fitted with the outer wall of the first support seat 13, and the inner wall at the top of the nozzle outer shell 2 is fitted with the outer wall of the second support seat 14.

[0057] In order to facilitate subsequent description, in the embodiment, one end of the wind blown out from the first nozzle 11 in the bladeless fan is called the first air outlet end 10, and one end of the wind blown out from the second nozzle 12 is called the second air outlet end 20.

[0058] As shown in Figure 28 and Figure 3 The first nozzle 11 comprises a first nozzle body 111 and a first fitting part 112 protruding outwardly from the side walls on both sides of the first nozzle body 111. The first nozzle body 111 is provided with a first wind guide channel 111a penetrating in the direction from the first air outlet end 10 to the second air outlet end 20. The first wind guide channel 111a has a ring-shaped structure, and the upper and lower ends thereof extend to the upper end and the lower end of the first nozzle body 111 respectively, and the end of the first wind guide channel 111a close to the first air outlet end 10 is communicated with the outside through the first wind guide hole 211.

[0059] The first fitting part 112 is located on the side of the first nozzle body 111 close to the first air outlet end 10, and is used for fitting with the nozzle outer shell 2. Specifically, the first fitting part 112 is provided with a first insertion slot 1121 recessed inwardly, which is formed by extending downwardly from the upper end of the first fitting part 112, and the first insertion slot 1121 is inserted and fitted with the nozzle outer shell 2. Preferably, the first fitting part 112 is symmetrically arranged on both sides of the first nozzle body 111, so that the first wind guide channel 111a is provided with the first insertion slot 1121 on both sides, thereby supporting the first wind guide channel 111a and avoiding deformation of the first wind guide channel 111a.

[0060] The first nozzle 11 and the diffusion air switching assembly 3 cooperate to form a first air outlet channel 104. Specifically, the first adapter 112 comprises an adapter end face 112a, the adapter end face 112a and the diffusion air switching assembly 3 form a first air outlet section 1041 of the first air outlet channel 104, and the connecting position of the first adapter 112 and the first nozzle body 111 is provided with a second air outlet section 1042. The first air outlet section 1041 and the second air outlet section 1042 combine to form a complete first air outlet channel 104. In other embodiments, the second air outlet section 1042 can also be formed on the first nozzle body 111 separately, which is not limited in the present application. The airflow flows out along the first air guide hole 211 through the first air outlet section 1041, the second air outlet section 1042 and the first air outlet 104a in sequence. Preferably, the air outlet direction of the first air outlet channel 104 is parallel to the hole wall of the first air guide hole 211, so that the airflow can flow out along the hole wall of the first air guide hole 211, and the airflow can flow out farther.

[0061] Preferably, the number of the first air outlet channel 104 is two and they are symmetrically arranged on both sides of the first nozzle body 111, so that the air can be blown out from both sides of the first air guide channel 111a at the same time, thereby guiding the external air to be blown to the first air outlet end 10 together with the internal air through the first air guide channel 111a.

[0062] Preferably, the second air outlet section 1042 of the first air outlet channel 104 is provided with a plurality of first reinforcing ribs 113, and the two ends of the first reinforcing ribs 113 are respectively connected with the first adapter 112 and the first nozzle body 111. By arranging the first reinforcing ribs 113, the first air outlet channel 104 can be supported to avoid deformation at the outlet of the first air outlet channel 104.

[0063] The bottom and top of the second nozzle 12 are fixedly connected with the first support seat 13 and the second support seat 14 respectively. As Figure 28 、 Figure 4 Figure 8As shown, the second nozzle 12 is substantially identical in structure to the first nozzle 11. The second nozzle 12 comprises a second nozzle body 121 and a second adapter 122 protruding outwardly on both sides of the second nozzle body 121. The second nozzle body 121 is provided with a second air guide channel 121a extending through the second nozzle body 121 from the second air outlet end 20 to the first air outlet end 10, and one end of the second air guide channel 121a close to the second air outlet end 20 is connected to the outside through a second air guide hole 221. The second air guide channel 121a is identical in structure to the first air guide channel 111a, and the present application will not be described here. The first air guide channel 111a and the second air guide channel 121a are adapted to form a complete air guide channel 106. When the air inside the fan blows out from the first air outlet 104a or the second air outlet 105a, the external air can be guided along the air guide channel 106 to blow towards the first air outlet end 10 or the second air outlet end 20 together with the internal air, thereby improving the air blowing area and the air blowing effect. Preferably, in order to avoid the outward disengagement of the first nozzle 11 and the second nozzle 12, the first nozzle 11 and the second nozzle 12 are provided with hooks 107 bent upward near the adapter of the two nozzles, and the hooks 107 are hung with a locking plate 114 that restricts the disengagement of the first nozzle 11 and the second nozzle 12. The locking plate 114 is provided with a hanging hole 1141 on the end face, the height of the hanging hole 1141 is higher than the height from the bottom to the top of the hook 107, and the width of the hanging hole 1141 is equal to or slightly greater than the maximum width between the two hooks 107, and the side wall of the hook 107 is limited in the hanging hole 1141. When the first nozzle 11 and the second nozzle 12 are inserted, the locking plate 114 is hung on the hook 107, and the locking plate 114 can restrict the horizontal movement of the first nozzle 11 and the second nozzle 12. Preferably, in the present embodiment, the number of hooks 107 is multiple and is arranged at intervals from the upper end to the lower end of the first nozzle body 111 and the second nozzle body 121, thereby ensuring that the first nozzle 11 and the second nozzle 12 are locked up and down. Preferably, in order to improve the stable connection of the locking plate 114 with the first nozzle body 111 and the second nozzle body 121, after the locking plate 114 is hung, a fastener can be used to fasten the locking plate 114 with the first nozzle body 111 or the second nozzle body 121, which is a common knowledge in the art and will not be described here.

[0064] The second adapter 122 is provided with a second insertion slot 1221 recessed inwardly, which is identical in structure and number to the first insertion slot 1121, and can tightly fit the second nozzle 12 with the nozzle shell 2, and at the same time support the second air guide channel 121a. The bottom and top of the second nozzle 12 are fixedly connected with the first support seat 13 and the second support seat 14 respectively, and the specific connection manner can be referred to the connection structure of the first nozzle 11 with the first support seat 13 and the second support seat 14, which will not be described here.

[0065] The second nozzle 12 and the diffusion air switching assembly 3 cooperate to form a second air outlet channel 105, and the number of the second air outlet channel 105 is also two, and the two second air outlet channels 105 are symmetrically arranged on both sides of the second nozzle main body 121, so that the air can be blown out from both sides of the second air guide channel 121a at the same time, and then the external air is guided to be blown to the second air outlet end 20 by the second air guide channel 121a together with the internal air. The second air outlet channel 105 includes a third air outlet section 1051 and a fourth air outlet section 1052, and the specific structure can be referred to the description of the first air outlet channel 104, and the present application will not be described here. Preferably, in the embodiment, the air outlet direction of the second air outlet channel 105 is inclined to the hole wall of the second air guide hole 221, so that the airflow blown out through the second air guide channel 121a is more diffused, and the blowing area is increased. Specifically, in the embodiment, the fourth air outlet section 1052 of the second air outlet channel 105 is opened on the side wall of the second nozzle main body 121, and the fourth air outlet section 1052 is inclined to the middle part of the second air guide hole 221. In order to further improve the inclination of the airflow flowing out of the fourth air outlet section 1052, the third air outlet section 1051 is also inclined to the middle part of the second air guide hole 221. Specifically, the second nozzle 12 further includes a guide plate 123 arranged on the second nozzle main body 121, and the guide plate 123 is provided with a guide part 1231 inclined to the middle part of the second air guide hole 221. The guide part 1231 cooperates with the diffusion air switching assembly 3 to form the third air outlet section 1051, and the airflow flows along the inclined third air outlet section 1051 and the fourth air outlet section 1052 to the outside on both sides of the second air guide hole 221, so that the airflow blowing area is wider. In the embodiment, the inclination angle of the guide part 1231 is 30°-60°. The number of the guide plate 123 is two, and the two guide plates 123 are symmetrically arranged on both sides of the second nozzle main body 121, so as to cooperate with the two second air outlet channels 105 on both sides of the second nozzle main body 121. The fourth air outlet section 1052 is also provided with a plurality of first reinforcing ribs 113 arranged at intervals, which can support the second air outlet channel 105 and avoid deformation of the outlet of the second air outlet channel 105.

[0066] The upper end surface of the first support seat 13 is provided with a second groove 132, and the number of the second groove 132 is two and oppositely arranged. The bottoms of the first nozzle 11 and the second nozzle 12 are respectively embedded in the two second grooves 132, so as to position the first nozzle 11 and the second nozzle 12.

[0067] As shown in Figures 5 to 8 The first support seat 13 covers the air wheel assembly 200 and the flow guide assembly 6. The middle position of the upper end surface of the first support seat 13 is provided with a boss 133, and the boss 133 is a hollow structure. An air supply channel 1331 is formed in the boss 133. The air blown out by the air wheel assembly 200 enters the air containing cavity 103 through the air supply channel 1331, and is then divided by the nozzle inner shell 1 and blown out from the first air outlet channel 104 or the second air outlet channel 105.

[0068] Preferably, to improve the smoothness of gas flow into the air-containment chamber 103, a deflector plate 15 is provided at the bottom of the nozzle inner housing 1, corresponding to the outlet of the deflector assembly 6. The lower portion of the deflector plate 15 is an arc-shaped structure that curves toward the center of the boss 133. Two deflectors 15 are symmetrically arranged on either side of the nozzle inner housing 1. When the gas in the deflector assembly 6 flows out of the air supply channel 1331, the deflectors 15 guide the gas, ensuring smoother airflow and preventing abnormal noise.

[0069] Two downwardly protruding positioning portions 142 are provided on the lower end surface of the second support seat 14 corresponding to the first nozzle 11 and the second nozzle 12. The positioning portion 142 is provided with a third groove 143 that matches the top contour of the first nozzle 11 and / or the second nozzle 12. The third groove 143 is used to position the top of the first nozzle 11 and / or the second nozzle 12. The shape and structure of the third groove 143 are roughly the same as the shape and structure of the second groove 132, and will not be repeated here.

[0070] Preferably, Figures 8 to 10 As shown, to further enhance the installation stability of the first and second nozzles 11, 12, the nozzle inner housing 1 further includes a nozzle support plate 16 disposed on the first and second nozzles 11, 12. The upper and lower ends of the nozzle support plate 16 abut against the first and second support seats 13, 14, respectively. A first through-hole 161 is defined in the nozzle support plate 16. Both the first and second nozzle bodies 111, 121 are provided with outwardly protruding first fixing posts 108 for connection to the nozzle support plate 16. Fasteners connect the first through-hole 161 to the first fixing posts 108.

[0071] In this embodiment, two nozzle support plates 16 are symmetrically positioned on either side of the first nozzle 11 and the second nozzle 12. Positioning portions 144 are provided at the junctions between the first and second support bases 13, 14, and the nozzle support plates 16. Positioning portions 144 define a position-limiting cavity 145 for accommodating the ends of the nozzle support plates 16. The ends of the nozzle support plates 16 are inserted into the position-limiting cavity 145 to achieve positional restraint. The nozzle support plates 16 support the first and second nozzles, improving the stability of the first and second nozzles 11, 12 on the first and second support bases 13, 14.

[0072] like Figures 2 to 4 、 Figure 11 As shown, the nozzle housing 2 includes a first housing half 21 and a second housing half 22 that match each other. The first housing half 21 and the second housing half 22 are fixedly connected by gluing or the like.

[0073] The first shell half 21 and the second shell half 22 cooperate to form a receiving cavity 23 for accommodating the nozzle inner shell 1. The first air guide hole 211 is formed in the first shell half 21, and the second air guide hole 221 is formed in the second shell half 22. The first air guide hole 211 and the second air guide hole 221 are both strip-shaped through-hole structures, and the first air guide hole 211 and the second air guide hole 221 are correspondingly arranged at both ends of the air guide channel 106. In order to facilitate operation and meet the conventional use habit, in this embodiment, the first shell half 21 is arranged at the front end of the fan, and the second shell half 22 is arranged at the rear end of the fan. Correspondingly, the first nozzle 11 is arranged at the front end of the fan, the first air outlet 104a of the first nozzle 11 and the first air guide hole 211 of the first shell half 21 cooperate to form the first air outlet part 101, and the fan realizes forward air outlet; the second nozzle 12 is arranged at the rear end of the fan, the second air outlet 105a of the second nozzle 12 and the second air guide hole 221 of the second shell half 22 cooperate to form the second air outlet part 102, and the fan realizes rearward air outlet.

[0074] The inner wall of the nozzle shell 2 is provided with a first plug-in convex rib 212 and a second plug-in convex rib 222. The first plug-in convex rib 212 is arranged close to the first air guide hole 211, and the second plug-in convex rib 222 is arranged close to the second air guide hole 221. When the nozzle shell 2 is covered on the nozzle inner shell 1, the first plug-in convex rib 212 and the second plug-in convex rib 222 are respectively inserted into the first insertion slot 1121 and the second insertion slot 1221, so that the nozzle shell 2 and the nozzle inner shell 1 are stably connected. The number of the first plug-in convex rib 212 corresponds to two and is respectively located on both sides of the first air guide hole 211, and the number of the second plug-in convex rib 222 corresponds to two and is respectively located on both sides of the second air guide hole 221. The first plug-in convex rib 212 and the second plug-in convex rib 222 can support the first air guide hole 211 and the second air guide hole 221 to avoid deformation.

[0075] In addition, the nozzle shell 2 further comprises a shell support plate 24 arranged at the top end of the first shell half 21 and the second shell half 22, and a rotating buckle support 25 arranged on the nozzle shell support plate 24, and the rotating buckle support 25 is used for rotatingly matching with the top shell assembly 4.

[0076] The rotating buckle support 25 is in a ring structure as a whole. A plurality of rotating buckle grooves 251 are formed on the end face of the rotating buckle support 25 along the circumferential direction. One end of the rotating buckle groove 251 along the rotating installation direction is an open end, and the other end is provided with an upwardly extending rotating buckle part 252. The rotating buckle part 252 extends to above the rotating buckle groove 251 in the rotating installation direction, so that the other end of the rotating buckle groove 251 is a closed side, thereby forming a closed space for accommodating and limiting the movement of the top shell assembly 4.

[0077] As Figures 28 to 4 , Figure 12 and Figure 13As shown, the diffusion air switching assembly 3 comprises two sets of swing assemblies 3a symmetrically arranged on both sides of the nozzle inner shell 1 and a driving assembly 3b driving the swing assemblies 3a to move. The two sets of swing assemblies 3a move synchronously and control the opening and closing of the first air outlet 104 and the second air outlet 105 respectively.

[0078] The swing assembly 3a comprises a pull plate 31, a pull rod 32 and an opening and closing plate 33. The pull plate 31 is arranged on the nozzle inner shell 1 and can move up and down relative to the nozzle inner shell 1. The pull plate 31 comprises a pull plate main body 311 and a pull plate connecting portion 312 arranged on the upper end of the pull plate main body 311. A sliding portion 3111 is arranged on the pull plate main body 311. The sliding portion 3111 is inclined towards the first air outlet portion 101 or the second air outlet portion 102. The inclination angle is preferably 30°-60°.

[0079] The pull plate connecting portion 312 passes through the second support seat 14 and is accommodated in the upper space of the nozzle outer shell 2. A first guide hole 3121 is arranged on the side wall of the pull plate connecting portion 312. The first guide hole 3121 has an elongated structure and its long side is arranged along the horizontal direction. The output end of the driving assembly 3b is arranged in the first guide hole 3121, thereby driving the pull plate 31 to move up and down. A first installation groove 3122 is arranged on the upper end surface of the pull plate connecting portion 312. The swing assembly 3a further comprises a transmission plate 34. One side of the transmission plate 34 is fixedly installed in the first installation groove 3122 of one set of swing assemblies 3a. The other side of the transmission plate 34 is fixedly installed in the first installation groove 3122 of the other set of swing assemblies 3a. The two symmetrically arranged swing assemblies 3a are connected through the transmission plate 34 and realize synchronous transmission.

[0080] In the embodiment, the pull plate 31 is arranged at the middle position of the nozzle inner shell 1. In order to facilitate the up and down sliding of the pull plate 31, the first nozzle 11 and the second nozzle 12 close to the connection position therebetween are provided with outwardly protruding limiting plates 109. The limiting plates 109 form guide grooves guiding the vertical movement of the pull plate main body 311. The width between the limiting plates 109 is the same as or slightly larger than the width of the pull plate main body 311.

[0081] The middle part of the back of the pull rod 32 is provided with an outwardly convex slide rod 321, which is arranged in the sliding part 3111 and can slide along the sliding part 3111 under the action of the pull plate 31. The sliding part 3111 can adopt a slide groove structure or a slide hole structure. In order to facilitate assembly, in the embodiment, the sliding part 3111 is a long strip-shaped slide hole, and the slide rod 321 is arranged in the sliding part 3111, so that the pull rod 32 is in sliding connection with the pull plate 31. When the pull plate 31 rises or falls, the slide rod 321 will be pressed by the side wall of the sliding part 3111, so as to move along the inclined direction of the sliding part 3111. In order to avoid that the slide rod 321 is separated outwardly from the sliding part 3111, the end part of the slide rod 321 is provided with a connecting handle 322, the length of the connecting handle 322 is greater than the width of the sliding part 3111, and the width of the connecting handle 322 is less than the width of the sliding part 3111, so that the connecting handle 322 can pass through the sliding part 3111 after rotating by a certain angle, and after rotating by a certain angle, the connecting handle 322 can abut against the end surface of the pull plate main body 311 and limit the slide rod 321 from separating outwardly from the sliding part 3111.

[0082] The opening and closing plate 33 is in sliding connection with the nozzle inner shell 1. Specifically, the opening and closing plate 33 comprises an outwardly convex second guide hole 33a, and the nozzle inner shell 1 is provided with a guide column (not shown in the figure) which is outwardly convex and arranged in the second guide hole 33a, and the opening and closing plate 33 can slide along the second guide hole 33a relative to the guide column. In the embodiment, the second guide hole 33a is a long strip-shaped structure, and the long side thereof is arranged along the horizontal direction, and the inner width of the second guide hole 33a is slightly greater than the outer diameter of the guide column. Preferably, in the embodiment, the guide column is specifically the first fixed column 108, the first fixed column 108 is outwardly convex from the second guide hole 33a, and the nozzle support plate 16 and the opening and closing plate 33 share one fixed column, which can simplify the structure on the one hand, and the opening and closing plate 33 is limited by the nozzle support plate 16 to prevent the opening and closing plate 33 from separating outwardly from the first fixed column 108, so that the connection of the opening and closing plate 33 is more stable.

[0083] The upper and lower ends of the opening and closing plate 33 are in contact with the second support seat 14 and the first support seat 13 respectively, so as to limit the movement of the opening and closing plate 33 in the upward and downward directions and prevent the opening and closing plate 33 from rotating around the first fixed column 108. In order to facilitate assembly, a certain gap can be left between the upper part of the opening and closing plate 33 and the second support seat 14.

[0084] The opening and closing plate 33 comprises a first opening and closing plate 331 slidably connected to the first nozzle 11 and a second opening and closing plate 332 slidably connected to the second nozzle 12. The pull rod 32 is fixed to the first opening and closing plate 331 and the second opening and closing plate 332 at two ends thereof. When the pull plate 31 moves upward or downward, it can provide a pushing force to the pull rod 32 to drive the pull rod 32 to move toward the first air outlet part 101 and the second air outlet part 102, thereby driving the first opening and closing plate 331 and the second opening and closing plate 332 to move together, and because of the limitation of the first fixed column 108, the first opening and closing plate 331 and the second opening and closing plate 332 will move in the horizontal direction.

[0085] The first opening and closing plate 331 cooperates with the end surface 112a of the connecting part of the first nozzle 11 to form the first air outlet section 1041 of the first air outlet channel 104. The first opening and closing plate 331 comprises an arc-shaped first air guide surface 3311 and a second air guide surface 3312 parallel to the end surface 112a of the connecting part. When the first opening and closing plate 331 moves toward the first air outlet part 101, the second air guide surface 3312 can abut against the end surface 112a of the connecting part, thereby blocking the second air outlet section 1042. Preferably, the second air guide surface 3312 and the end surface 112a of the connecting part are flat surfaces, thereby facilitating molding and easily abutting against each other. In other embodiments, the second air guide surface 3312 and the end surface 112a of the connecting part can also adopt other mutually abutting surfaces, which are not limited in the present application.

[0086] The second opening and closing plate 332 cooperates with the guide part 1231 of the air guide plate 123 to form the third air outlet section 1051 of the second air outlet channel 105. The second opening and closing plate 332 comprises an arc-shaped third air guide surface 3321, the curvature direction of the third air guide surface 3321 is the same as or substantially the same as the inclination direction of the guide part 1231, and the third air outlet section 1051 can expand the air outlet angle of the fourth air outlet section 1052. When the second opening and closing plate 332 moves toward the second air outlet part 102, the third air guide surface 3321 can abut against the guide part 1231, thereby blocking the fourth air outlet section 1052.

[0087] Preferably, in the present embodiment, the number of pull rods 32 is multiple and they are arranged at intervals along the length direction of the pull plate 31, and the sliding part 3111 is correspondingly provided with multiple sliding parts. By connecting the opening and closing plate 33 with multiple pull rods 32, the connection of the opening and closing plate 33 is more stable.

[0088] The driving assembly 3b is arranged on the second support base 14, and the driving assembly 3b comprises a first driving member 35 and a rotating disc 36 arranged on a first output shaft 351 of the first driving member 35. The first driving member 35 is specifically a motor. The rotating disc 36 is provided with a pull rod 361 at an end face close to an outer side position, and the pull rod 361 is arranged in a first guide hole 3121 of the pull plate 31. When the rotating disc 36 rotates, the pull rod 361 can rotate with the rotating disc 36, so as to drive the pull plate 31 to move up and down.

[0089] The working principle of the diffusion air switching assembly of the nozzle assembly is as follows: when the fan is turned on, air flows out from the first air outlet 104 or the second air outlet 105. When it is needed to switch the direction of the air flow, the first driving member 35 is turned on, the first driving member 35 rotates and drives the rotating disc 36 to rotate synchronously, the pull rod 361 located on the rotating disc 36 rotates and drives the pull plate 31 to move up or down, the up and down movement of the pull plate 31 is converted into the movement of the pull rod 32 towards the first air outlet 104a or the second air outlet 105a, when the pull rod 32 moves towards the first air outlet 104a, the first opening and closing plate 331 can close the first air outlet 104, so that air flows out from the second air outlet 105; when the pull rod 32 moves towards the second air outlet 105a, the second opening and closing plate 332 can close the second air outlet 105, so that air flows out from the first air outlet 104.

[0090] As shown in Figure 11 , Figure 14 and Figure 15 , the top shell assembly 4 is arranged at the top of the nozzle housing 2 and closes the top of the nozzle housing 2. The top shell assembly 4 comprises a top shell cover 41, and the top shell cover 41 comprises a top shell cover plate 411 and a cover portion 412 extending downwards along the periphery of the top shell cover plate. The lower end face of the top shell cover plate 411 is provided with at least one second mounting groove 4111 protruding downwards, and a magnetic member 45 is embedded in the second mounting groove 4111. The magnetic member 45 is specifically a magnet. A material capable of being attracted by the magnetic member 45 is arranged in the remote controller of the bladeless fan. When the remote controller (not shown in the figure) is placed on the top shell cover plate 411, the magnetic member 45 can attract the remote controller, so as to avoid the remote controller from falling off the top shell cover plate 411. Preferably, in the embodiment, the number of the second mounting grooves 4111 is two and they are oppositely arranged on both sides of the top shell cover plate 411, so as to further improve the stability of the remote controller.

[0091] The cover portion 412 extends into the nozzle housing 2 and is rotationally connected with the screw cap support 25. The side wall of the cover portion 412 is provided with a plurality of connection grooves 4121 corresponding to the screw cap grooves 251. The connection grooves 4121 are provided with screw cap blocks 4122 at one end along the rotation installation direction, and the other end is an open end. The screw cap blocks 4122 extend above the connection grooves 4121 towards the open end. When the screw cap blocks 4122 are inserted from the open end of the screw cap grooves 251 and rotated to the closed end of the screw cap grooves 251, the screw cap blocks 4122 and the screw cap portions 252 are clamped with each other, so that the top cover assembly 4 and the screw cap support 25 are tightly connected. The top cover assembly 4 and the nozzle housing 2 are connected by screwing, without the need for additional connecting members and external auxiliary tools for assembly. The assembly and disassembly are convenient, and the installation efficiency is greatly improved.

[0092] The top cover assembly 4 further comprises a key plate 42 for controlling the fan switch and a key 43 for pressing the key plate 42. The key plate 42 is a PCBA plate. The lower end surface of the top cover cover plate 411 is provided with a mounting portion 44 for fixing the key 43 and the key plate 42.

[0093] The key 43 is located above the key plate 42. The key 43 comprises a pressing portion 431 and a supporting portion 432 connected with the pressing portion 431. The top cover cover plate 411 is provided with a mounting through hole 4112, and the pressing portion 431 is arranged in the mounting through hole 4112.

[0094] The mounting portion 44 comprises a first connecting column 441, and the supporting portion 432 is connected with the first connecting column 441, so as to support and fix the pressing portion 431. The key plate 42 is accommodated in the cover portion 412, and the mounting portion 44 further comprises a mounting table 442. The key plate 42 is limited and fixed at the mounting table 442. Preferably, in order to facilitate production, the mounting portion 44 and the top cover cover 41 are integrally formed in the embodiment.

[0095] Preferably, in order to facilitate production, the mounting portion 44 and the top cover cover 41 are integrally formed in the embodiment.

[0096] As Figure 16 and 17As shown, the flow guide assembly 6 comprises a flow guide housing 61 and a flow guide cover 62 arranged in the flow guide housing 61. A flow guide channel 63 is formed between the outer wall of the flow guide cover 62 and the inner wall of the flow guide housing 61, and the flow guide channel 63 is connected with the air supply channel 1331. The wind wheel assembly 200 comprises a wind wheel outer housing 201 and a wind wheel inner housing 202, and a wind inlet channel 203 is formed between the wind wheel outer housing 201 and the wind wheel inner housing 202. The wind wheel assembly 200 partially extends into the flow guide channel 63 and connects the wind inlet channel 203 with the flow guide channel 63. The air blown out through the wind inlet channel 203 enters the air supply channel 1331 after being guided by the flow guide channel 63.

[0097] The flow guide housing 61 is open at the top and the bottom. The top of the flow guide housing 61 is connected with the bottom of the first support base 13. Specifically, as shown in Figure 6 The top of the flow guide housing 61 is provided with a first stopper 611 along the side thereof, and the bottom of the first support base 13 is correspondingly provided with a second stopper 612. The first stopper 611 and the second stopper 612 are connected with each other. In other embodiments, threaded fasteners can be provided to connect the two, which is not limited in the present application.

[0098] In addition, the flow guide housing 61 is provided with a first receiving portion 613 corresponding to the first nozzle 11 and the second nozzle 12. The two ends of the first receiving portion 613 are connected with the inner wall of the flow guide housing 61, respectively. The first receiving portion 613 is provided with a fourth groove 6131, which is an arc groove with the same profile as the bottom of the first nozzle 11 and the second nozzle 12. When the flow guide housing 61 is connected below the first support base 13, the fourth groove 6131 can be matched with the second groove 132 and tightly matched with the bottom of the first nozzle 11 and the second nozzle 12.

[0099] Preferably, in order to improve the supporting strength of the first receiving portion 613, the flow guide housing 61 is further provided with a supporting rib 614, and the two ends of the supporting rib 614 are connected with the first receiving portion 613 and the inner wall of the flow guide housing 61, respectively. In the present embodiment, the supporting rib 614 is located at the middle position of the first receiving portion 613, and the number of the supporting rib 614 is two and oppositely arranged on both sides of the first receiving portion 613.

[0100] The bottom side wall of the flow guide housing 61 is provided with a second receiving portion 615. The bottom of the flow guide housing 61 is downwardly extended along the circumference thereof to form a convex ring 617, and the convex ring 617 is provided with a first sealing ring 64. The first sealing ring 64 is abutted with the wind wheel outer housing 201 of the wind wheel assembly 200, so as to close the gap between the wind wheel assembly 200 and the flow guide housing 61.

[0101] The first sealing ring 64 comprises a first sleeve part 641 in the shape of a ring and a first sealing part 642 formed on the inner ring of the first sleeve part 641. A first embedding groove 6411 is formed on the upper end surface of the first sleeve part 641 from top to bottom, and the first embedding groove 6411 is formed along the circumference of the first sleeve part 641. The width of the first embedding groove 6411 is equal to or slightly smaller than the thickness of the convex ring 617, and the first sealing ring 64 is embedded on the convex ring 617 through the first embedding groove 6411. The first sealing part 642 is elastic and inwardly curved. When the wind wheel assembly 200 is inserted into the flow guide channel 63, the outer shell 201 of the wind wheel assembly 200 abuts against the first sealing part 642, the first sealing part 642 is outwardly curved to avoid abutting, and under the action of the elastic force, the first sealing part 642 abuts against the outer shell of the wind wheel assembly 200.

[0102] Preferably, in order to improve the close fit between the first sealing ring 64 and the convex ring 617, a sealing ring pressing ring 65 is further arranged on the flow guide shell 61, and the sealing ring pressing ring 65 is clamped on the flow guide shell 61 and abuts against the side surface and the lower end surface of the first sealing ring 64.

[0103] As shown in Figure 18 The side wall of the sealing ring pressing ring 65 is provided with buckles 651, and the second receiving part 615 of the flow guide shell 61 is correspondingly provided with a plurality of buckling holes 6151, and the buckles 651 pass through the buckling holes 6151 and abut against the second receiving part 615. In the embodiment, the buckles 651 are uniformly distributed along the circumference of the sealing ring pressing ring 65, and the buckling holes 6151 are correspondingly provided with a plurality of buckling holes 6151 corresponding to the buckles 651. When installing, the sealing ring pressing ring 65 is installed in the buckling holes 6151 of the flow guide shell 61 from bottom to top.

[0104] The flow guide cover 62 is accommodated in the flow guide shell 61 and connected with the first receiving part 613. The side wall of the flow guide cover 62 is provided with at least one second connecting column 621 extending upward in the vertical direction. The first receiving part 613 is correspondingly provided with a third connecting column (not shown in the figure) extending downward, and the second connecting column 621 abuts against the third connecting column. The second connecting column 621 and the third connecting column are both provided with threaded holes, and a threaded fastener (not shown in the figure) is arranged between the second connecting column 621 and the third connecting column, so as to realize the connection between the flow guide cover 62 and the flow guide shell 61. In the embodiment, the number of the second connecting columns 621 is two and they are oppositely arranged on both sides of the flow guide cover 62, and the number of the third connecting columns is correspondingly two.

[0105] The bottom of the shroud 62 is located on the inner rotor housing 202 of the rotor assembly 200, and a second sealing ring 66 is disposed between the shroud 62 and the inner rotor housing 202. Specifically, a flange 622 is provided protruding outward from the bottom of the shroud 62. The second sealing ring 66 includes an annular second sleeve portion 661 and a second sealing portion 662 formed on the second sleeve portion 661. A second embedding groove 6611 is formed on the inner wall of the second sleeve portion 661 from the inside to the outside. The second embedding groove 6611 extends circumferentially along the second sleeve portion 661. The width of the second embedding groove 6611 is equal to or slightly smaller than the thickness of the flange 622. The second sealing ring 66 is sleeved onto the outside of the flange 622 through the second embedding groove 6611.

[0106] The second sealing portion 662 protrudes downward and bends outward relative to the second sleeve portion 661. The second sealing portion 662 has a certain elasticity. When the deflector 62 is connected to the wind rotor inner shell 202, the second sealing portion 662 abuts against the wind rotor inner shell 202, thereby sealing the gap between the deflector 62 and the wind rotor inner shell 202. Preferably, as Figure 19 As shown, the second sealing ring 66 also includes at least one shock-absorbing ring 663 formed on the lower end surface of the second sleeve portion 661. This shock-absorbing ring 663 contacts the rotor inner housing 202 and provides vibration reduction for the rotor assembly 200. Preferably, in this embodiment, there are two shock-absorbing rings 663. The provision of the first sealing ring 64 and the second sealing ring 66 effectively seals the gap between the guide channel 63 and the air inlet channel 203, preventing air leakage.

[0107] Please combine Figure 7 、 Figure 22 as well as Figure 20 A base 71 is provided below the base 7 to fix the bladeless fan on the contact surface. The base 71 includes a base shell 711 and a plurality of foot pads 712 provided on the base shell 711. The base shell 711 is a circular structure, including a bottom shell 713 and a side shell 714 extending outward from the bottom shell 713. The bottom shell 713 is a circular structure, and the bottom shell 713 and the side shell 714 are arranged to form a receiving space. An annular shell 7132 with an opening is formed on the inner wall of the bottom shell 713 and protrudes outward from the bottom shell 713. An opening 7141 is formed on the side shell 714, and the cable in the bladeless fan can be connected to the outside world through the opening 7141.

[0108] Please combine Figures 20 to 22The base 7 includes a main body shell 72, a base cavity 73 formed by the main body shell 72, and a cable storage column (not labeled) formed by the main body shell 72 outwardly protruding, the base 7 is generally hollow cylindrical structure, the main body shell 72 is provided with a plurality of small holes 721, the small holes 721 are uniformly arranged on the main body shell 72, the small holes 721 are the air inlet of the main body shell 72, the base cavity 73 is provided with a baffle plate 731 at the bottom, so that the airflow entering the base cavity 73 can all move upward and flow to the wind wheel assembly 200 located on the base 7. The main body shell 72 extends downward at the bottom to form an extension shell 74, the base 7 has a lower annular flange 741 formed by the extension shell 74 outwardly extending, the main body shell 72 also has an upper annular flange 722 formed by the main body shell 72 outwardly extending near the upper end of the main body shell 72, the upper annular flange 722 and the lower annular flange 741 are oppositely arranged. The upper annular flange 722, the lower annular flange 741, the main body shell 72, and the extension shell 74 can be integrally formed or detachably connected, which is not specifically limited here. The bottom end of the extension shell 74 enters the storage space of the base 71 and is clamped in the annular shell 7132, the extension shell 74, the baffle plate 731 and the bottom shell 713 form a second cavity 75, as shown in Figure 5

[0109] ​The upper surface of the upper annular flange 722 is provided with an annular first limiting ring 7221 and a second limiting ring 7222, the first limiting ring 7221 and the second limiting ring 7222 are coaxially arranged with the main body shell 72, the first limiting ring 7221 and the second limiting ring 7222 are upwardly protruding from the upper surface of the upper annular flange 722, and the first limiting ring 7221 is arranged closer to the main body shell 72 than the second limiting ring 7222. The upper annular flange 722 is provided with at least one clamping groove 7223 at a position within the first limiting ring 7221 and close to the main body shell 72, and in the present embodiment, the number of clamping grooves 7223 is four, and the four clamping grooves 7223 are arranged at equal intervals in the circumferential direction. Similarly, the upper surface of the upper annular flange 722 is upwardly protruding to form a protruding frame 7224 at the outer edge thereof, and the protruding frame 7224 and the upper annular flange 722 form a first recessed ring 7225 therebetween, and in the present embodiment, the number of protruding frames 7224 is two, the two protruding frames 7224 are located on both sides of the base cavity 73, and the two protruding frames 7224 form a circular ring with two openings, so the number of first recessed rings 7225 is two, and the two first recessed rings 7225 are located on both sides of the base cavity 73. The protruding frame 7224 is further provided with a through hole 7226 communicating with the first recessed ring 7225, the number of through holes 7226 is six, and three of the through holes 7226 communicate with one first recessed ring 7225 and are arranged at equal intervals in the circumferential direction, and the other three through holes 7226 communicate with the second first recessed ring 7225 and are arranged at equal intervals in the circumferential direction.

[0110] Please refer to Figure 5 The base 7 is further provided with a counterweight 76 (which can be combined with Figure 34 ) for lowering the center of gravity of the base 7, and the counterweight 76 is arranged at the bottom of the base 7 and fixed on the base 7 by a fixing member. Specifically, the counterweight 76 is located in the second cavity 75.

[0111] The base 7 is further provided with a nozzle lock frame 77 for limiting the nozzle assembly 100, the nozzle lock frame 77 comprises a lock frame body 771 and at least one protruding block 772 provided on the lock frame body 771 and protruding outward from the inner wall of the lock frame body 771. In the embodiment, the number of protruding blocks 772 is three, the three protruding blocks 772 are arranged at equal intervals in the circumferential direction and are arranged one by one corresponding to the positions of the through holes 7226 in communication with a first recessed ring 7225 on the base 7, when the nozzle lock frame 77 is fixed to the base 7, the lock frame body 771 enters a first recessed ring 7225, the protruding block 772 protrudes out of the base 7 through the through hole 7226 at the corresponding position, a limiting space that can limit axial movement is formed between the protruding block 772 and the base 7, specifically, the protruding block 722 is located above the upper annular flange 722, and a limiting space is formed between the protruding block 722 and the upper annular flange 722. In the embodiment, the number of nozzle lock frames 77 is two, the two nozzle lock frames 77 are oppositely arranged on both sides of the base 7, one end of the rotating assembly 8 is arranged in the limiting space to be fixed on the base 7, so that the rotating assembly 8 cannot move in the axial direction relative to the base 7 and cannot be separated from the base 7, and the rotating assembly 8 can only rotate relative to the base 7 around the central axis, thereby increasing the assembly stability of the bladeless fan.

[0112] The cable storage column is provided with a storage groove 78 for storing cables, and the cable storage column extends along the axial direction of the base 7. The storage groove 78 is provided in two numbers, and the two storage grooves 78 are completely identical and oppositely arranged on both sides of the base 7. In this embodiment, the two storage grooves 78 are formed on the main shell 72 and the extension shell 74. Specifically, the cable storage column includes a first tab 781 and a second tab 782 which are outwardly protruded from the main shell 72, and the first tab 781 and the second tab 782 extend to the extension shell 74 along the axial direction of the main shell 72. Below the upper annular flange 722, the first tab 781 and the second tab 782 have a first baffle 783 therebetween, and above the lower annular flange 741, the first tab 781 and the second tab 782 have a second baffle 784 therebetween. The first tab 781, the second tab 782, the first baffle 783, the second baffle 784, and the main shell 72 form a storage groove 78 with an opening, and the storage groove 78 has a cuboid structure. At the bottom position of the storage groove 78, the storage groove 78 is formed with a third inner recess 785 on the extension shell 74, so as to communicate the storage groove 78 with the second cavity 75. The second baffle 784 is formed with a fourth inner recess 786, and the storage groove 78 is also communicated with the second cavity 75. The cable (not shown) for supplying power to the bladeless fan enters the base 71 from the opening 7141 and passes through the third inner recess 785 or the fourth inner recess 786 to enter the storage groove 78 to supply power to the bladeless fan at the required position of the bladeless fan. The outer end of the cable is connected to a plug for connection to a power supply. The cable includes a live wire and a neutral wire. Alternatively, the cable is divided into at least two wires inside the storage groove 78 after entering the storage groove 78. In addition, the first baffle 783, the first tab 781 and the second tab 782 are formed with a first accommodating groove 787 above the storage groove 78, and the second baffle 784, the first tab 781 and the second tab 782 are formed with a second accommodating groove 788 below the storage groove 78. The first accommodating groove 787 and the second accommodating groove 788 are both fixed with a magnet block 795. Please refer to Figure 7 .

[0113] Please refer to Figures 23 to 25The base 7 is further provided with side strips 79 for closing the receiving grooves 78, which are installed on the cable receiving columns. The side strips 79 are similar to cuboid structures, and the number of the side strips 79 is two, which respectively close the openings of the receiving grooves 78. The inner walls of the side strips 79 are provided with a plurality of second reinforcing ribs 791 to increase the strength of the side strips 79. The receiving grooves 78 are provided with first step faces 789, and the side strips 79 are provided with second step faces 792 matched with the first step faces 789. Specifically, the first tabs 781 and the second tabs 782 of the receiving grooves 78 are provided with the first step faces 789 at the ends away from the main body shell 72, and the first side walls 793 and the second side walls 794 of the side strips 79 have the first tabs 781 and the second tabs 782 opposite to each other, and the first side walls 793 and the second side walls 794 are formed with the second step faces 792 at the ends opposite to the first tabs 781 and the second tabs 782, respectively. The second step faces 792 are clamped with the first step faces 789 to clamp the side strips 79 in the receiving grooves 78. The side strips 79 are inserted into the base 7 from above and matched with the receiving grooves 78, at this time, the first step faces 789 and the second step faces 792 are matched to fix the side strips 79 with the receiving grooves 78, hide the cables received in the receiving grooves 78, facilitate wiring, and the cables will not be messy and external, and the appearance of the bladeless fan is improved.

[0114] In addition, in order to further fix the side strips 79 in the receiving grooves 78, the first tabs 781 and the second tabs 782 of the receiving grooves 78 are provided with a plurality of fixing blocks 780 at the ends away from the main body shell 72, please refer to Figure 25 The fixing blocks 780 are formed outward from the first tabs 781 or the second tabs 782, and the side strips 79 are formed with fixing strips 796 outward from the second reinforcing ribs 791 at positions close to the first side walls 793 and the second side walls 794. The fixing strips 796 have fixing flaps 7961 and extension plates 7962 extending downward from the fixing flaps 7961, and the extension plates 7962 are higher than the first side walls 793 or the second side walls 794. When the side strips 79 are inserted into the base 7 from above and matched with the receiving grooves 78, the fixing blocks 780 abut against the fixing strips 796, and the fixing blocks 780 are located between the fixing flaps 7961 and the extension plates 7962, which improves the cooperation stability of the side strips 79 and the receiving grooves 78. The top of the side strips 79 has fixing pieces 797, which extend into the two openings formed by the two protruding frames 7224 when the two side strips 79 are fixed on the base 71 to form a complete ring with the two protruding frames 7224.

[0115] The filter screen assembly 9 is clamped between the upper annular flange 722 and the lower annular flange 741, and is arranged on both sides of the side edge strip 79 which is connected with the filter screen assembly 9 and fixes the filter screen assembly 9 on the base 7. The side edge strip 79 is connected with the filter screen assembly 9 in a magnetic attraction mode. Specifically, the filter screen assembly 9 is clamped with a magnetic attraction piece, and the side edge strip 79 is provided with a magnet block 795 at the upper end and the lower end, i.e. in the first accommodating groove 787 and the second accommodating groove 788. The magnet block 795 cooperates with the magnetic attraction piece to realize magnetic attraction connection. However, the connection mode of the side edge strip 79 and the filter screen assembly 9 is not limited to this, and will not be enumerated here.

[0116] Please refer to Figure 34 The filter screen assembly 9 includes a filter screen support 91 mounted on the base 7, a filter screen shell 92 arranged on the filter screen support 91, and a filter screen 93 clamped between the filter screen support 91 and the filter screen shell 92. The filter screen is a HEPA assembly. The base 7 and the filter screen assembly 9 are specifically connected by the side edge strip 79 and the filter screen shell 92 in a magnetic attraction mode. The filter screen shell 92 is located outside the side edge strip 79. In order to make the overall structure more compact, the filter screen assembly 9 is composed of two half-ring-shaped half-open structures, each of which includes the filter screen support 91, the filter screen shell 92 and the filter screen 93. The cable accommodating column and the main shell 72 form an accommodating space 70 for accommodating the half-open structure, and the main shell 72 has an arc-shaped surface 720 located on one side of the accommodating space 90, which is perpendicular to the plane where the axis of the main shell 72 is located. The filter screen support 91 has an arc-shaped support body part 911 matched with the arc-shaped surface 720 and a receiving part 912 extending outward from the arc-shaped support body part 911. A plurality of large-area hollow parts 913 are formed on the arc-shaped support body part 911. The receiving part 912 and the arc-shaped support body part 911 form a mounting space for mounting the filter screen 93. The filter screen support 91 and the filter screen 93 are arranged in the filter screen shell 92. Preferably, the filter screen support 91 is further provided with a rigid fixing frame 94 to further support the filter screen 93.

[0117] Please refer to Figure 26, in order to drive the nozzle assembly 100 to rotate around the central axis relative to the base 7 to change the horizontal wind direction of the bladeless fan, the bladeless fan further comprises a second driving member 811 for providing power and a transmission assembly for transmitting the power to the nozzle assembly 100, the transmission assembly is arranged between the base 7 and the nozzle assembly 100, and the nozzle assembly 100 is rotated relative to the base 7 through the transmission assembly. In the embodiment, the bladeless fan further comprises a rotating assembly 8 connected between the base 7 and the nozzle assembly 100, the nozzle assembly 100 is fixed on the rotating assembly 8, and the rotating assembly 8 is used to drive the nozzle assembly 100 to rotate relative to the base 7. Therefore, the second driving member 811 and the transmission assembly are arranged between the rotating assembly 8 and the base 7, and the rotating assembly 8 comprises a rotating support frame 82 connected between the base 7 and the nozzle assembly 100.

[0118] Please refer to Figure 27 and Figure 28 , one end of the rotating support frame 82 is fixedly connected to the nozzle assembly 100, and the other end is rotatably connected to the base 7. In the embodiment, the rotating support frame 82 is generally in a hollow cylindrical structure, and the rotating support frame 82 comprises a support frame shell 821 which is similar to a hollow cylindrical structure. The rotating support frame 82 has an extension part 822 which is formed by extending outward from the inner wall of the support frame shell 821, then extending downward along the axial direction of the support frame shell 821, and then extending outward along the horizontal direction. The cross section of the extension part 822 is similar to a Z-shaped structure, and the extension part 822 and the support frame shell 821 form a third accommodating groove 823 therebetween. The number of the extension part 822 is four, and the four extension parts 822 are arranged at equal intervals in the circumferential direction along the inner wall of the support frame shell 821. The four third accommodating grooves 823 form an annular accommodation space. In addition, each extension part 822 is provided with a support column 824 which is formed by extending outward from the extension part 822 and is located at the same position on each extension part 822. The support column 824 extends along the axis of the support frame shell 821. Two second accommodating cavities 825 are further formed on the outer wall of the support frame shell 821. When the rotating assembly 8 is arranged on the base 7, one end of the rotating support frame 82 is arranged in the limiting space formed by the nozzle lock frame 77 and the base 7. Specifically, the bottom of the support frame shell 821 extends outward from the support frame shell 821 to form a support frame flange 826, and the support frame flange 826 is located in the limiting space. The mounting mode of the rotating support frame 82 can be that the rotating support frame 82 is placed on the base 7 first, and then the two nozzle lock frames 77 are mounted on the base 7, and the protruding block 772 is located above the support frame flange 826 to limit the movement of the rotating support frame 82 in the axial direction, thereby increasing the stability of the bladeless fan.

[0119] The transmission assembly comprises a ring gear 812 and a pinion 813 engaged with the ring gear 812, the ring gear 812 is arranged on one of the base 7 and the nozzle assembly 100, and the pinion 813 is arranged on the other one of the base 7 and the nozzle assembly 100, and the specific positions of the ring gear 812 and the pinion 813 are not limited herein, in the embodiment, the pinion 813 is arranged on the nozzle assembly 100, and specifically, the pinion 813 is arranged on the rotating support frame 82, and the ring gear 812 is fixed on the base 7.

[0120] The second driving member 811 is arranged on the rotating support frame 82, and the second driving member 811 is a motor with a second output shaft 814, and the pinion 813 is sleeved on the second output shaft 814. The second driving member 811 is fixed on the support frame housing 821 of the rotating support frame 82, and the second output shaft 814 of the motor is located below the motor and extends into the third accommodating groove 823 formed by the support frame housing 821 and the extension 822. A plurality of meshing teeth engaged with the pinion 813 are arranged on the outer wall of the ring gear 812, in the embodiment, the meshing teeth are formed on the upper half of the outer wall of the ring gear 812, and the meshing teeth are arranged along the axial direction of the ring gear 812, but the meshing teeth can be formed on the entire outer wall of the ring gear 812. At least one clamping block 815 is arranged on the ring gear 812, the clamping block 815 extends downward from the ring gear 812, and the at least one clamping block 815 is arranged at equal intervals in the circumferential direction, and in the embodiment, the number of clamping blocks 815 is four, and the specific number of clamping blocks 815 is not limited herein. It should be noted that the clamping block 815 and the ring gear 812 can also be detachably fixed. The base 7 is provided with a clamping groove 7223 matched with the clamping block 815, and the clamping block 815 is inserted into the clamping groove 7223 at the corresponding position to fix the ring gear 812 on the base 7. The fourth accommodating groove 816 is arranged on the ring gear 812, and specifically, the fourth accommodating groove 816 is formed on the upper portion of the ring gear 812.

[0121] The end of the ring gear 812 away from the base 7 extends into the third accommodating groove 823 formed by the support frame housing 821 and the extension 822, and the pinion 813 is engaged with the ring gear 812 in the third accommodating groove 823. The motor drives the pinion 813 to rotate, so that the pinion 813 and the ring gear 812 rotate relatively, and since the ring gear 812 is fixed on the base 7, the motor and the pinion 813 rotate relatively with the ring gear 812 and the base 7, and since the motor is fixed on the rotating support frame 82, the motor drives the rotating support frame 82 to rotate relatively with the ring gear 812 and the base 7, and since the nozzle assembly 100 and the wind wheel assembly 200 are fixed on the rotating support frame 82, the nozzle assembly 100 and the wind wheel assembly 200 rotate relatively with the rotating support frame 82 and the base 7 synchronously.

[0122] Please refer to Figure 1 , Figure 19 and Figure 26 , and refer to Figure 29 Figure 30 The damping member 83 is arranged between the wind wheel assembly 200 and the rotating support frame 82, and specifically, the damping member 83 is arranged between the rotating support frame 82 and the wind wheel housing 201. The damping member 83 includes a fixed part 831 fixed in the wind wheel assembly 200 and a damping part 832 clamped between the wind wheel assembly 200 and the rotating support frame 82. The fixed part 831 and the damping part 832 are integrally formed. The damping member 83 is connected with the rotating support frame 82 through a first connecting member 833. The first connecting member 833 and the damping member 83 jointly limit the circumferential rotation of the wind wheel assembly 200 relative to the rotating support frame 82.

[0123] In the embodiment, the first connecting member 833 is a pin 833, but the first connecting member 833 is not limited to the pin 833, and can be other fixed connecting components, such as a long rod, etc. The pin 833 can be partially inserted into the rotating support frame 82. The rotating support frame 82 is provided with a first fixing hole 827, as shown in Figure 27 In the embodiment, the first fixing hole 827 is formed on the support 824 of the extension 822. The pin 833 can be partially inserted into the first fixing hole 827. Another part of the pin 833 can be inserted into the damping member 83, so as to fix the damping member 83 and the rotating support frame 82. The damping part 832 is formed with an insertion hole 834 at one end close to the rotating support frame 82. The pin 833 can be partially inserted into the insertion hole 834. The insertion hole 834 can pass through the damping part 832 and extend into the fixed part 831. It is conceived that the insertion hole 834 can also be a through hole passing through the damping part 832 and the fixed part 831. Herein, the specific forming position of the insertion hole 834 is not limited.

[0124] The upper wind wheel housing 201 of the wind wheel assembly 200 is provided with a second fixing hole 2011. The fixed part 831 is embedded in the second fixing hole 2011, so as to fix the damping member 83 and the wind wheel assembly 200. In other embodiments, the fixed part 831 can also clamp the wind wheel assembly 200 to fix the wind wheel assembly 200 and the damping member 83. Through the damping member 83, the wind wheel assembly 200 is fixed to the rotating support frame 82.

[0125] In this embodiment, the shock-absorbing member 83 is an arrow-shaped structure, the shock-absorbing part 832 is a conical structure, and the fixing part 831 is a cylindrical structure. The diameter of the fixing part 831 is smaller than the maximum diameter of the shock-absorbing part 832. However, the structure of the shock-absorbing member 83 can also be other structures, such as a cuboid structure or a cylindrical structure, which are not listed here. The shock-absorbing member 83 is made of an elastic material. When the shock-absorbing member 83 is fixed on the rotating support frame 82 through the first connecting member 833, and the wind wheel assembly 200 is fixed on the shock-absorbing member 83 through the fixing part 831, the wind wheel assembly 200 is at least partially located above the shock-absorbing part 832, thereby limiting the downward movement of the wind wheel assembly 200 relative to the rotating support frame 82 along the axial direction. Since the shock-absorbing member 83 is made of an elastic material, it can play a shock-absorbing effect between the wind wheel assembly 200 and the rotating support frame 82. In addition, since the fixing part 831 is inserted into the wind wheel assembly 200, the movement of the wind wheel assembly 200 relative to the rotating support frame 82 in the circumferential direction is limited. Due to the elastic properties of the fixing part 831, it further plays a shock-absorbing effect. The number of shock-absorbing members 83 is four, and the four shock-absorbing members 83 are arranged at equal intervals in the circumferential direction to stably fix the wind wheel assembly 200 on the rotating support frame 82. Although the number of shock-absorbing members 83 can be other in other embodiments, which is not specifically limited here, the shock-absorbing members 83 enhance the stability of the bladeless fan.

[0126] Please refer to Figure 29 and Figure 31 , a bearing 84 is arranged between the rotating assembly 8 and the base 7 to increase the rotation stability of the nozzle assembly 100 arranged on the base 7 relative to the base 7, reduce the friction loss between the rotating assembly 8 and the base 7, and increase the service life of the bladeless fan. The rotating assembly 8, the bearing 84, and the base 7 are arranged along the axial direction. The bearing 84 is an annular structure, which includes a bearing lower shell 841 arranged on the base 7, a bearing upper shell 842 abutting against the rotating support frame 82, a retainer 843 located between the bearing upper shell 842 and the bearing lower shell 841, and a plurality of balls 844 arranged in the retainer 843. A plurality of recesses 8431 for installing the balls 844 are arranged in the retainer 843. Please refer to Figure 26

[0127] ​The base 7 is provided with a second concave ring 7227. After the ring gear 812 is fixed on the base 7, the ring gear 812 forms a receiving space with the first limiting ring 7221. The bearing lower shell 841 is located in the second concave ring 7227, so as to realize the relative fixation of the bearing lower shell 841 and the base 7. The bottom of the rotating support frame 82 has a third stepped surface 828, which is clamped with the bearing upper shell 842. Specifically, the third stepped surface 828 is concave inward from the inner wall of the self-supporting frame shell 821. When the third stepped surface 828 is clamped with the bearing upper shell 842, the third stepped surface 828 and the upper surface of the bearing upper shell 842 and the inner surface of the bearing upper shell 842 are in mutual abutment. The bearing 84 bears the weight of the rotating support frame 82 and the components installed on the rotating support frame 82. When the rotating assembly 8 and the nozzle assembly 100 rotate relative to the base 7, the rotating support frame 82 can rotate stably.

[0128] The bladeless fan also includes a rotation sensing assembly for detecting the rotation state of the nozzle assembly 100 relative to the base 7, including the rotation direction, the rotation position and other parameters. Please refer to Figure 26 and Figure 27 The rotation sensing assembly includes a first magnet 851 arranged in the fourth accommodating groove 816 of the ring gear 812, and a centering Hall PCBA board 852 and a limiting Hall PCBA board 853 arranged on the rotating support frame 82. Specifically, the centering Hall PCBA board 852 and the limiting Hall PCBA board 853 are respectively installed in two second receiving cavities 825 on the rotating support frame 82. It should be noted that the Hall sensors installed on the rotating support frame 82 are not limited to the centering Hall PCBA board 852 and the limiting Hall PCBA board 853, but also other, which are not limited here. Indeed, in other embodiments, the first magnet 851 can also be arranged on the rotating support frame 82, and the centering Hall PCBA board 852 and the limiting Hall PCBA board 853 are arranged on the ring gear 812 or the base 7, which are not limited here, and are determined according to the actual situation. When the rotating support frame 82 rotates relative to the ring gear 812, the centering Hall PCBA board 852 cooperates with the first magnet 851 to determine the rotation position of the rotating support frame 82, and the limiting Hall PCBA board 853 cooperates with the first magnet 851 to determine the maximum limiting position of the rotation of the rotating support frame 82, so as to determine the rotation direction and the rotation angle of the rotating support frame 82, so as to confirm the position and the rotation angle of the nozzle in the rotation process of the nozzle assembly 100, so as to improve the rotation accuracy of the nozzle assembly 100.

[0129] Please refer to Figure 26 and Figure 27 , and Figure 32The bladeless fan further comprises a power supply assembly for supplying power to the rotating nozzle assembly 100 and the motor and the like for driving the nozzle assembly 100 to rotate, the power supply assembly comprising a conductive assembly with contacts 861 and a conductive ring 862 in electrical contact with the end faces of the contacts 861, the conductive assembly being arranged on one of the base 7 and the rotating assembly 8, and the conductive ring 862 being arranged on the other of the base 7 and the rotating assembly 8, the specific positions of the conductive assembly and the conductive ring 862 not being limited herein. In this embodiment, the conductive assembly with the contacts 861 is arranged on the base 7, and the conductive ring 862 is arranged on the rotating assembly 8.

[0130] The conductive ring 862 is an annular structure with an opening and an L-shaped cross section. The conductive ring 862 can be fixed on the rotating assembly 8 in a sleeving manner. The conductive ring 862 is provided with a plurality of protrusions 863. The protrusions 863 are formed by protruding upward from the conductive ring 862 and are integrally formed with the conductive ring 862, but are not limited thereto. The protrusions 863 can also be fixed on the conductive ring 862 in a screwing or gluing manner. The conductive ring 862 includes a positive conductive ring 862 and a negative conductive ring 862. The positive conductive ring 862 and the negative conductive ring 862 are completely identical in structure. One of the positive conductive ring 862 and the negative conductive ring 862 is arranged on the rotating support frame 82. The rotating assembly 8 further includes a conductive ring fixing frame 87 arranged on the rotating support frame 82. The other of the positive conductive ring 862 and the negative conductive ring 862 is arranged on the conductive ring fixing frame 87. Specifically, the conductive ring fixing frame 87 is sleeved on the rotating support frame 82 and is fixed on the rotating support frame 82 by a locking piece (not shown). The conductive ring fixing frame 87 and the rotating support frame 82 are respectively provided with a first lock hole 871 and a second lock hole 829 matched with the locking piece. The first lock hole 871 and the second lock hole 829 are arranged correspondingly. The locking piece can be a screw. The first lock hole 871 and the second lock hole 829 are threaded holes matched with the screw in a threaded manner. However, the fixing manner of the conductive ring fixing frame 87 and the rotating support frame 82 is not limited thereto and will not be listed one by one here. The conductive ring fixing frame 87 is provided with a plurality of fifth accommodation grooves 872 matched with the protrusions 863 along the circumference. When the conductive ring 862 is fixed on the conductive ring fixing frame 87, the conductive ring 862 is attached to the side surface and the bottom surface of the conductive ring fixing frame 87. The protrusions 863 are inserted into the corresponding fifth accommodation grooves 872 to fix the conductive ring 862 on the conductive ring fixing frame 87. Similarly, the support frame flange 826 of the rotating support frame 82 is provided with a plurality of sixth accommodation grooves 8261 matched with the protrusions 863 along the circumference. When the conductive ring 862 is fixed on the rotating support frame 82, the conductive ring 862 is attached to the side surface and the bottom surface of the support frame flange 826. The protrusions 863 are inserted into the corresponding sixth accommodation grooves 8261 to fix the conductive ring 862 on the rotating support frame 82. Here, the fixing manner of the conductive ring 862 is not limited specifically. One face of the positive conductive ring 862 and the negative conductive ring 862 is directed toward the conductive assembly arranged on the base 7.

[0131] Please combine Figure 21The conductive assembly includes a conductive fixing seat 864 fixed on the base 7, and a conductive sheet arranged on the conductive fixing seat 864, the conductive sheet includes an elastic arm 8651 arranged on the conductive fixing seat 864, and a contact 861 arranged on the elastic arm 8651. The contact 861 includes a positive contact 861 and a negative contact 861, the positive conductive ring 862 is in electrical contact with the end face of the positive contact 861, and the negative conductive ring 862 is in electrical contact with the end face of the negative contact 861. When the rotating support frame 82 rotates relative to the base 7, the conductive ring 862 is always in contact with the contact 861 through the end face, and the power supply method is convenient and simple in structure. The elastic arm 8651 includes a first end and a second end, the first end is fixed on the conductive fixing seat 864, and the second end is fixed with the contact 861. The first end of the elastic arm 8651 is fixed, the second end is not fixed, the elastic arm 8651 is similar to a U-shaped structure, the elastic arm 8651 has an upward bending part 8652 at the first end, so as to facilitate the fixation of the elastic arm 8651, and the second end of the elastic arm 8651 is bent upward relative to the first end. The force of the contact 861 fixed on the second end is upward, so that the contact 861 can move in the axial direction relative to the base 7.

[0132] Please combine Figure 25 The base 7 is provided with a seventh accommodating groove 723 located above the accommodating groove 78, the seventh accommodating groove 723 is arranged in communication with one of the first accommodating grooves 787 and located above the first accommodating groove 787, the conductive fixing seat 864 is fixed in the seventh accommodating groove 723 and located above the magnet block 795, the conductive fixing seat 864 and the base 7 are fixed by a fixing member (not shown), the conductive fixing seat 864 and the base 7 are provided with third fixing holes 866 matched with the fixing member. The fixing member can be a screw, the third fixing hole 866 is a screw hole, and the conductive fixing seat 864 and the base 7 are fixed through the thread cooperation of the screw and the screw hole. In the embodiment, the number of the third fixing holes 866 is three, and the three third fixing holes 866 are distributed in a triangular shape. It is true that in other embodiments, the fixing mode of the conductive fixing seat 864 and the base 7 is other, such as clamp connection, and the number and distribution position of the third fixing hole 866 are not limited here.

[0133] When the rotating assembly 8 is installed on the base 7, the positive conductive ring 862 and the negative conductive ring 862 will be in contact with the corresponding positive contact 861 and negative contact 861, and the positive conductive ring 862 and the negative conductive ring 862 will exert a force to make the positive contact 861 and the negative contact 861 move downward. However, the elastic arm 8651 exerts a force to make the contact 861 move upward, so that the conductive ring 862 and the contact 861 are in closer contact, and the stability of power supply to the rotating nozzle assembly 100 and the like is strong.

[0134] Please combine Figure 33 andFigure 35 The bladeless fan further comprises an electric control part, which comprises a main control board 55 for controlling the start of the nozzle assembly and the rotating assembly 8, and a sensor assembly 58 and a display screen assembly 57 connected in signal with the main control board 55. The main control board 55 is the control core component of the bladeless fan, and is further connected in signal with the Hall sensor, the key board, the first driving member and the second driving member. The key board is the general switch of the electric control part, and the main control board 55 is used to control the start and rotating speed of the first driving member and the second driving member.

[0135] The sensor assembly 58 and the display screen assembly 57 are both arranged on the main support assembly 5. In order to make the whole machine structure more compact and the whole machine more integrated and improve the aesthetic degree, preferably, the main support assembly 5 is provided with a first space 51 for accommodating the sensor assembly 58 and a second space 52 for accommodating the display screen assembly 57. The nozzle outer shell 2 (see Figure 1 ) covers the main support assembly 5, and the first space 51 and the second space 52 are towards the nozzle outer shell 2 of the nozzle assembly 100. The nozzle outer shell 2 is provided with a convection hole 21a (see Figure 13 ) for forming air convection between the sensor assembly 58 and the outside. The nozzle outer shell 2 shields the second space 52, and the nozzle outer shell 2 is provided with a touch opening 21b (see Figure 1 ) for exposing the display screen assembly 57. In the embodiment, the sensor assembly 58 has sensors capable of realizing two different detection functions. Specifically, the sensor assembly 58 comprises a particle sensor (not numbered) and a temperature and humidity sensor (not numbered), and the positions of the convection hole are arranged relative to the particle sensor and the temperature and humidity sensor. The sensor assembly 58 is assembled with the main support assembly 5 in the following manner: the sensor assembly 58 comprises an integrated housing 581 for accommodating the particle sensor and the temperature and humidity sensor, and two opposite corners 582 of the integrated housing 581 are fixed on the main support assembly 5. Specifically, the corners 582 are connected with the main support assembly 5 through fasteners (not shown). This assembly manner is helpful to realize quick installation. The integrated housing 581 is accommodated in the first space 51, which is further helpful to reduce the volume of the whole machine. The first space 51 is further provided with a sealing member 59 clamped between the integrated housing 581 and the nozzle outer shell 2.

[0136] The main control board 55 is in an arc structure, the main support assembly 5 is formed with a docking space 53 for accommodating the wind wheel assembly 200, the flow guide assembly 6 and the rotating assembly 8, the main control board 55 is accommodated in the docking space 53, the docking space 53 is formed with a clamping column 541, the main control board 55 is formed with a clamping column groove 551 which is docked with the clamping column 541. The nozzle assembly 100 and the top surface of the main support assembly 5 are provided with a screw through hole (not numbered), the screw through hole is embedded with a fastener (not shown) for connecting the nozzle assembly 100 and the main support assembly 5. The docking space 53 of the main support assembly 5 is formed with an inner step surface 531, the inner step surface 531 is provided with a plurality of screw columns 532 for fixedly connecting with the rotating assembly 8.

[0137] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0138] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be considered as a limitation on the scope of the patent. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A bladeless fan, comprising a base, a main support assembly arranged above the base, a nozzle assembly mounted on the main support assembly, a rotating assembly arranged between the main support assembly and the base, and a diffusion air switching assembly arranged on the nozzle assembly, the nozzle assembly comprising two air outlets arranged oppositely, the diffusion air switching assembly enabling the air outlets to blow air or be closed, and the nozzle assembly being rotatable relative to the base. The nozzle assembly comprises a nozzle inner shell, the diffusion air switching assembly comprises two sets of swing assemblies symmetrically arranged on both sides of the nozzle inner shell and a driving assembly driving the swing assemblies to move, and the two sets of swing assemblies move synchronously and respectively control the opening and closing of the air outlets on both sides of the nozzle inner shell. The driving assembly pushes the swing assemblies to move up and down, and the swing assemblies convert the up-and-down movement into front-and-back movement to enable one of the air outlets to open and the other to close. The diffusion air switching assembly further comprises a transmission plate, and the two symmetrically arranged swing assemblies are connected through the transmission plate and realize synchronous transmission.

2. The bladeless fan of claim 1, wherein, The swing assembly comprises a pull plate arranged on the nozzle inner shell, a pull rod arranged on the pull plate, and an opening and closing plate arranged on the pull rod, the pull rod is movably arranged on the pull plate, the pull plate is movable up and down relative to the nozzle inner shell and drives the pull rod to move towards the air outlet, and the opening and closing plate is fixed on the pull rod and can close and open the air outlet.

3. The bladeless fan of claim 2, wherein, The driving assembly comprises a driving motor and a rotating disc mounted on the output end of the driving motor, the rotating disc is provided with a lever, the lever is connected with the pull plate and drives the pull rod to move up and down.

4. The bladeless fan of claim 1, wherein, The bladeless fan further comprises a top shell assembly arranged on the nozzle assembly, the nozzle assembly comprises a nozzle outer shell, the top end of the nozzle outer shell is provided with a screw knob support, and the top shell assembly is rotationally connected with the screw knob support.

5. The bladeless fan of claim 4, wherein, The nozzle inner shell is covered by the nozzle outer shell, the nozzle outer shell is provided with an air guide hole, the inner wall of the nozzle outer shell is provided with an insertion convex rib close to the air guide hole, and the nozzle inner shell is provided with an insertion slot matched with the insertion convex rib.

6. The bladeless fan of claim 5, wherein, The bladeless fan further comprises a fan wheel assembly having an air inlet channel and a flow guide assembly having a flow guide channel, the fan wheel assembly and the flow guide assembly are located in the main support assembly, the flow guide assembly comprises a flow guide cover, and a first damping ring is arranged between the top of the fan wheel assembly and the flow guide cover.

7. The bladeless fan of claim 6, wherein, One of the base and the rotating assembly is provided with a contact, the other of the base and the rotating assembly is provided with a conductive ring, and the contact is in electrical contact with the end surface of the conductive ring.

8. The bladeless fan of claim 7, wherein, A transmission assembly is arranged between the base and the nozzle assembly, the nozzle assembly is rotatable relative to the base through the transmission assembly, the transmission assembly comprises a ring gear and a pinion meshing with the ring gear, the ring gear is arranged on one of the base and the nozzle assembly, and the pinion is arranged on the other of the base and the nozzle assembly.

9. The bladeless fan of claim 8, wherein, The ring gear is fixed on the base, at least one clamping groove is arranged on the base, a clamping block is arranged on the ring gear and matched with the clamping groove, and the clamping block is inserted into the corresponding clamping groove to fix the ring gear on the base.

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