Bladeless fan

Abstract

The present invention relates to a bladeless fan, comprising a base and a nozzle assembly arranged on the base, the nozzle assembly comprising a nozzle inner shell and a nozzle outer shell covered outside the nozzle inner shell, the nozzle outer shell being provided with an air guide hole, the inner wall of the nozzle outer shell being provided with a plug-in rib, the plug-in rib being provided close to the air guide hole, and the nozzle inner shell being provided with a slot plugged with the plug-in rib. The inner wall of the nozzle outer shell of the present invention is provided with a plug-in rib, the nozzle inner shell is provided with a slot plugged with the plug-in rib, during the assembly process, the nozzle outer shell is plugged with the nozzle inner shell, the assembly is simple, and the production efficiency is improved; in addition, the plug-in rib is provided close to the air guide hole, after the nozzle outer shell is plugged with the nozzle inner shell, the plug-in rib can support the air guide hole to prevent the air guide hole from being deformed.

Description

Technical Field

[0001] The invention relates to a fan, in particular to a bladeless fan. Background Art

[0002] Compared with traditional electric fans with blades, bladeless fans have the characteristics of low noise and safety. The basic structure of a bladeless fan includes a nozzle assembly, a wind wheel assembly and a base. The nozzle assembly includes a nozzle inner shell and a nozzle outer shell. An air chamber is formed between the nozzle inner shell and the nozzle outer shell. The nozzle inner shell and the nozzle outer shell are provided with outlets for airflow to flow out. The airflow generated by the wind wheel assembly enters the air chamber and is blown out along the outlet. However, when assembling the existing nozzle assembly, the nozzle outer shell is usually covered on the outside of the nozzle inner shell, and the two are connected by fasteners. Therefore, the assembly process is very cumbersome. In addition, since the nozzle outer shell is thin, the outlet on the nozzle outer shell is easily deformed after long-term use, which makes it difficult to discharge air. Summary of the invention

[0003] The object of the present invention is to provide a bladeless fan which is easy to assemble and prevents deformation of air guide holes.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bladeless fan, comprising a base and a nozzle assembly arranged on the base, the nozzle assembly comprising a nozzle inner shell and a nozzle outer shell covered outside the nozzle inner shell, the nozzle outer shell being provided with an air guide hole, an inner wall of the nozzle outer shell being provided with a plug-in rib, the plug-in rib being arranged close to the air guide hole, and a slot being provided on the nozzle inner shell for plugging and cooperating with the plug-in rib.

[0005] Furthermore, the number of the plug-in convex ribs is two, and the plug-in convex ribs are respectively located on both sides of the air guide hole, and the number of the slots is correspondingly two.

[0006] Furthermore, the nozzle inner shell includes a first nozzle, a second nozzle, a first support seat and a second support seat, the first support seat is connected to the bottom of the first nozzle and the second nozzle, and the second support seat is connected to the top of the first nozzle and the second nozzle.

[0007] Furthermore, the first nozzle and the second nozzle are both provided with air outlets corresponding to the air guide holes, and the nozzle assembly also includes a diffusion wind switching assembly movably arranged on the first nozzle and the second nozzle, and the diffusion wind switching assembly can switch the air outlets and enable one of the air outlets to discharge air.

[0008] Furthermore, the first nozzle and the diffuser wind switching assembly cooperate to form a first air outlet, the second nozzle and the diffuser wind switching assembly cooperate to form a second air outlet, the air outlets are respectively located on the first air outlet and the second air outlet, and the diffuser wind assembly can move and close the first air outlet or the second air outlet.

[0009] Furthermore, the air outlet direction of the first air outlet duct is parallel to the hole wall of the air guide hole, and the air outlet direction of the second air outlet duct is inclined to the hole wall of the air guide hole.

[0010] Furthermore, the first nozzle and the second nozzle cooperate to form an air guide channel, the number of the first air outlet channels is two and they are respectively located on both sides of the first nozzle, and the number of the second air outlet channels is two and they are respectively located on both sides of the second nozzle.

[0011] Furthermore, the nozzle inner shell also includes a plurality of nozzle support plates, which are respectively installed on the first nozzle and the second nozzle, the upper end of the nozzle support plate abuts against the second support seat, and the lower end of the nozzle support plate abuts against the first support seat.

[0012] Furthermore, the first nozzle and the second nozzle are plug-fitted, and the first nozzle and the second nozzle are both provided with upwardly bent hooks near the joints thereof, and a locking plate is hung on the hooks to limit the separation of the first nozzle and the second nozzle.

[0013] Furthermore, the locking plate is provided with a mounting hole, the locking plate is hung on the first nozzle and the second nozzle through the mounting hole, and the hook side wall is confined within the mounting hole.

[0014] The beneficial effects of the present invention are as follows: the inner wall of the nozzle shell of the present invention is provided with plug-in ribs, and the nozzle inner shell is provided with slots plugged with the plug-in ribs. During the assembly process, the nozzle shell and the nozzle inner shell are plugged together, which is simple to assemble and improves production efficiency. In addition, the plug-in ribs are arranged near the air guide hole. After the nozzle shell and the nozzle inner shell are plugged together, the plug-in ribs can support the air guide hole to prevent the air guide hole from deformation.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall exploded schematic diagram of the bladeless fan of the present invention.

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure of a bladeless fan.

[0018] Figure 3 yes Figure 2 Cross-sectional view of a bladeless fan along the AA direction.

[0019] Figure 4 yes Figure 3 A partial enlarged view of the bladeless fan at point C.

[0020] Figure 5 yes Figure 3 A partial enlarged view of the bladeless fan at point D.

[0021] Figure 6 yes Figure 3 A partial enlarged view of the bladeless fan at point E.

[0022] Figure 7 yes Figure 2 Cross-sectional view of a bladeless fan in the BB direction.

[0023] Figure 8 It is a schematic structural diagram of the inner shell of the bladeless fan nozzle of the present invention.

[0024] Fig. 9 yes Figure 8 Schematic diagram of the installation of the first nozzle and the second nozzle of the nozzle inner shell and other components.

[0025] Fig.10 It is a structural schematic diagram of the second supporting base of the bladeless fan of the present invention.

[0026] Fig.11 It is a structural schematic diagram of the nozzle support plate of the bladeless fan of the present invention.

[0027] Fig.12 It is an exploded schematic diagram of the diffuser air switching assembly of the bladeless fan of the present invention.

[0028] Fig.13 yes Fig.12 Schematic diagram of the structure of the pull rod of the diffuser air switching assembly. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 1 and Figure 3 As shown, a bladeless fan corresponding to a preferred embodiment of the present invention includes a base 7, a wind wheel assembly 200, a deflector assembly 6, a nozzle assembly 100 and a top shell assembly 4. The top shell assembly 4, the nozzle assembly 100, the deflector assembly 6 and the wind wheel assembly 200 are arranged on the base 7 from top to bottom in sequence. The nozzle assembly 100 includes a diffuse wind switching assembly 3, and the nozzle assembly 100 is provided with a first air outlet 101 and a second air outlet 102. The diffuse wind switching assembly 3 can switch the first air outlet 101 or the second air outlet 102, so that one of the air outlets can discharge air. The airflow blown out by the wind wheel assembly 200 enters the nozzle assembly 100 along the deflector 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 arranged relatively.

[0034] Combination Figure 3 and Figure 7As shown, the nozzle assembly 100 includes a nozzle inner shell 1 and a nozzle outer shell 2 which is covered outside the nozzle inner shell 1. The inner wall of the nozzle inner shell 1 and the outer wall of the nozzle outer shell 2 cooperate to form an air chamber 103 which is closed relative to the outside, and the deflector assembly 6 is connected to the air chamber 103. The nozzle inner shell 1 is provided with a first air outlet 104a and a second air outlet 105a which are connected to the air chamber 103, and the nozzle outer shell 2 is provided with a first air guide hole 211 corresponding to the first air outlet 104a and a second air guide hole 221 corresponding to the second air outlet 105a. The first air outlet 104a and the first air guide hole 211 cooperate to form the first air outlet portion 101 of the nozzle assembly 100, and the second air outlet 105a and the second air guide hole 221 cooperate to form the second air outlet portion 102. In this embodiment, the air outlet directions of the first air guide hole 211 and the second air guide hole 221 are parallel to the horizontal plane.

[0035] The diffuse wind switching component 3 is movably arranged on the nozzle inner shell 1 and accommodated in the air chamber 103. The diffuse wind switching component 3 cooperates with the nozzle inner shell 1 to form a first air outlet 104 and a second air outlet 105. The first air outlet 104a is located on the first air outlet 104, and the second air outlet 105a is located on the second air outlet 105. The diffuse wind switching component 3 can move toward the direction close to the first air outlet 104a or the second air outlet 105a, so that it can selectively block the first air outlet 104 or the second air outlet 105, thereby realizing the switching of the air outlet. Of course, the diffuse wind switching component 3 can also be located in the middle of the first air outlet 104a and the second air outlet 105a, so that the first air outlet 104 and the second air outlet 105 are both conductive.

[0036] Preferably, in this embodiment, the nozzle assembly 100 is in a truncated cone structure, so that the bladeless fan is more rounded as a whole, with fewer edges and corners, to avoid bumping into the user during use. In addition, the truncated cone-shaped nozzle assembly 100 makes the air chamber 103 free of corners, and has better fluidity and wind conduction. In other embodiments, the nozzle assembly 100 may selectively adopt other contour structures, which are not limited by the present invention.

[0037] Combination Figures 3 to 5 , Fig. 9As shown, the nozzle inner shell 1 includes 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 matched and form an air guide channel 106, and the two ends of the air guide channel 106 are connected to the outside through the first air guide hole 211 and the second air guide hole 221. When the airflow generated in the fan is blown out by the first air outlet 104a or the second air outlet 105a, it can guide the external air to flow along the air guide channel 106. The first support seat 13 and the second support seat 14 are respectively connected to the upper and lower ends of the first nozzle 11 and the second nozzle 12 and are used to support and fix the first nozzle 11 and the second nozzle 12. The inner wall at the bottom of the nozzle outer shell 2 is in contact with the outer wall of the first support seat 13, and the inner wall at the top of the nozzle outer shell 2 is in contact with the outer wall of the second support seat 14.

[0038] For the convenience of subsequent description, in the present embodiment, the end of the bladeless fan where the wind is blown out from the first nozzle 11 is called the first air outlet end 10 , and the end where the wind is blown out from the second nozzle 12 is called the second air outlet end 20 .

[0039] The first nozzle 11 includes a first nozzle body 111 and a first matching portion 112 protruding outward from the side walls on both sides of the first nozzle body 111. The first nozzle body 111 is provided with a first air guide channel 111a that runs from the first air outlet end 10 to the second air outlet end 20. The first air guide channel 111a has a ring-shaped cross-section, and its upper and lower ends extend to the upper and lower ends of the first nozzle body 111, respectively. One end of the first air guide channel 111a close to the first air outlet end 10 is connected to the outside through the first air guide hole 211. Figure 4 As shown, the first nozzle body 111 includes a first end surface 111b facing the second air outlet 20, and a convex portion 1111 is provided on the first end surface 111b for plugging with the second nozzle 12, and the convex portion 1111 protrudes outward relative to the first end surface 111b. In this embodiment, the convex portion 1111 is an annular convex portion provided along the end surface contour.

[0040] The first connection portion 112 is located on the side of the first nozzle body 111 close to the first air outlet end 10, and the first connection portion 112 is used to match with the nozzle housing 2. Specifically, the first connection portion 112 is provided with a first slot 1121 that is recessed inwardly, and the first slot 1121 is formed by extending downward from the upper end of the first connection portion 112, and the first slot 1121 is plugged and matched with the nozzle housing 2. Preferably, the first connection portion 112 is symmetrically arranged on both sides of the first nozzle body 111, so that the first slot 1121 is arranged on both sides of the first air guide channel 111a, so that the first air guide channel 111a can be supported to prevent the first air guide channel 111a from being deformed.

[0041] The first nozzle 11 and the diffuser wind switching component 3 cooperate to form the first air outlet 104. Specifically, the first coupling portion 112 includes a coupling portion end face 112a, and the first air outlet section 1041 of the first air outlet 104 is formed between the coupling portion end face 112a and the diffuser wind switching component 3. A second air outlet section 1042 is provided at the connection between the first coupling portion 112 and the first nozzle body 111. The first air outlet section 1041 and the second air outlet section 1042 are combined to form a complete first air outlet 104. In other embodiments, the second air outlet section 1042 may also be formed separately on the first nozzle body 111, which is not limited in the present invention. 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 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 flows out over a longer distance.

[0042] Preferably, there are two first air outlet ducts 104 symmetrically arranged on both sides of the first nozzle body 111, so that wind can be blown out from both sides of the first air guide channel 111a at the same time, thereby guiding the external wind from the first air guide channel 111a to blow toward the first air outlet end 10 together with the internal wind.

[0043] Preferably, a plurality of first reinforcing ribs 113 are provided in the second air outlet section 1042 of the first air outlet 104, and the two ends of the first reinforcing ribs 113 are respectively connected to the first matching portion 112 and the first nozzle body 111. By providing the first reinforcing ribs 113, the first air outlet 104 can be supported to prevent deformation at the outlet of the first air outlet 104.

[0044] The bottom and top of the first nozzle 11 are fixedly connected to the first support seat 13 and the second support seat 14, respectively. Specifically, in the present embodiment, a first fixing column 1122 extending downward is provided at the bottom of the first matching portion 112, and a first through hole 131 is provided at the position of the first fixing column 1122 corresponding to the first supporting seat 13. The first fixing column 1122 and the first through hole 131 are fixed by passing a fastener (not shown). In the present embodiment, the first fixing column 1122 is specifically a threaded fixing column, and the fastener adopts a threaded fastener that matches it. In other embodiments, other screw connection or clamping methods may also be adopted, which is not limited here. In addition, the first fixing column 1122 may also be provided on the first nozzle body 111, which is not limited here by the present invention.

[0045] A second fixing column 1112 extending upward is disposed on the top of the first nozzle body 111, and a second through hole 141 is disposed on the second support seat 14 corresponding to the second fixing column 1112. Fasteners are provided between the second fixing column 1112 and the second through hole 141 to achieve fixation. The specific connection structure thereof can be referred to the connection structure between the first nozzle 11 and the first support seat 13, and the present invention will not be described in detail here.

[0046] like Figure 3 , Figure 4 , Figure 6 and Fig. 9 As shown, the second nozzle 12 has substantially the same structure as the first nozzle 11. The second nozzle 12 includes a second nozzle body 121 and second matching portions 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 that passes through the direction from the second air outlet end 20 to the first air outlet end 10, and the 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 has the same structure as the first air guide channel 111a, and the present invention will not be repeated here. The second nozzle body 121 includes a second end face 121b facing the first air outlet end 10, and a first groove 1211 that is recessed inwardly relative to the second end face 121b is provided on the second end face 121b. In the present embodiment, the first groove 1211 is an annular groove arranged along the end face contour. The convex portion 1111 of the first nozzle 11 is inserted into the first groove 1211, so that the first nozzle 11 and the second nozzle 12 are connected, and the first air guide channel 111a and the second air guide channel 121a are matched to form a complete air guide channel 106. When the wind in the fan is blown 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 and blown to the first air outlet end 10 or the second air outlet end 20 together with the internal wind, thereby increasing the blowing area and the blowing effect. Preferably, in order to avoid the first nozzle 11 and the second nozzle 12 from being disengaged outward, as shown in FIG. Fig. 9As shown, the first nozzle 11 and the second nozzle 12 are both provided with an upwardly bent hook 107 near the joint between the two, and a locking plate 114 is hung on the hook 107 to limit the separation of the first nozzle 11 and the second nozzle 12. A hanging hole 1141 is opened on the end surface of the locking plate 114, the height of the hanging hole 1141 is higher than the height from the bottom surface to the top surface of the hook 107, the width of the hanging hole 1141 is equal to or slightly larger than the maximum width between the two hooks 107, and the side wall of the hook 107 is restricted in the hanging hole 1141. When the first nozzle 11 and the second nozzle 12 are plugged in, the locking plate 114 is hung on the hook 107, and the locking plate 114 can limit the horizontal movement of the first nozzle 11 and the second nozzle 12. Preferably, in this embodiment, the number of hooks 107 is multiple and is spaced from the upper end to the lower end of the first nozzle body 111 and the second nozzle body 121, so as to ensure that the first nozzle 11 and the second nozzle 12 are locked from top to bottom. Preferably, in order to improve the stable connection between the locking plate 114 and the first nozzle body 111 and the second nozzle body 121, after the locking plate 114 is hung, fasteners can be used to fasten the locking plate 114 and the first nozzle body 111 or the second nozzle body 121. This is common knowledge in the field and will not be repeated in the present invention.

[0047] The second matching portion 122 is provided with a second inwardly recessed slot 1221. The structure and number of the second slot 1221 are the same as those of the first slot 1121, which enables the second nozzle 12 to fit closely with the nozzle housing 2 and supports the second air guide channel 121a. The bottom and top of the second nozzle 12 are respectively fixedly connected to the first support seat 13 and the second support seat 14. The specific connection method can refer to the connection structure between the first nozzle 11 and the first support seat 13 and the second support seat 14, and the present invention will not be repeated here.

[0048] The second nozzle 12 and the diffuse wind switching assembly 3 cooperate to form a second air outlet 105. The number of the second air outlet 105 is also two, and they are symmetrically arranged on both sides of the second nozzle body 121, so that the wind can be blown out from both sides of the second air guide channel 121a at the same time, and then the external wind is guided from the second air guide channel 121a to the second air outlet end 20 together with the internal wind. The second air outlet 105 includes a third air outlet section 1051 and a fourth air outlet section 1052. The specific structure thereof can be referred to the description of the first air outlet 104, and the present invention will not be repeated here. Preferably, in this embodiment, the air outlet direction of the second air outlet 105 is inclined with the hole wall of the second air guide hole 221, so that the air flow blown out through the second air guide channel 121a is more diffused, and the blowing area is increased. Specifically, in this embodiment, the fourth air outlet section 1052 of the second air outlet 105 is opened on the side wall of the second nozzle body 121, and the fourth air outlet section 1052 is inclined toward the middle of the second air guide hole 221. In order to further improve the inclination of the outflow of the fourth air outlet section 1052, the third air outlet section 1051 is also inclined toward the middle of the second air guide hole 221. Specifically, the second nozzle 12 also includes an air guide plate 123 arranged on the second nozzle body 121, and the air guide plate 123 is provided with a guide portion 1231 inclined toward the middle of the second air guide hole 221. The guide portion 1231 cooperates with the diffuse wind switching component 3 to form the third air outlet section 1051, and the airflow blows toward the two sides of the second air guide hole 221 to the outside along the inclined third air outlet section 1051 and the fourth air outlet section 1052, so that the airflow blowing area is wider. In this embodiment, the inclination angle of the guide portion 1231 is 30° to 60°. There are two air guide plates 123, which are symmetrically arranged on both sides of the second nozzle body 121 to cooperate with the two second air outlet ducts 105 on both sides of the second nozzle 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 duct 105 and prevent the outlet of the second air outlet duct 105 from being deformed.

[0049] Preferably, the bottom of the second slot 1221 is provided with a plurality of insertion holes 1222 at intervals along the length direction thereof. The air guide plate 123 is provided with a plurality of insertion holes 1234 at positions corresponding to the first reinforcing rib 113 of the second air outlet 105, and the air guide plate 123 is provided with a plurality of protruding blocks 1235 protruding outward at positions corresponding to the insertion holes 1222, and the insertion holes 1234 and the protruding blocks 1235 are arranged at intervals along the length direction of the air guide plate 123. When the air guide plate 123 is installed, the insertion holes 1234 are plugged into the first reinforcing rib 113, and the protruding blocks 1235 are inserted into the insertion holes 1222, so that the air guide plate 123 can be easily positioned and installed on the second nozzle 12.

[0050] A second groove 132 is disposed on the upper end surface of the first support seat 13 . There are two second grooves 132 that are opposite to each other. 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 .

[0051] like Figures 7 to 9 As shown, the first support seat 13 is disposed outside the wind wheel assembly 200 and the deflector assembly 6. A boss 133 is disposed at the middle position of the upper end surface of the first support seat 13. The boss 133 is a hollow structure, and an air supply channel 1331 is formed in the boss 133. The wind blown out of the wind wheel assembly 200 enters the air containing cavity 103 through the air supply channel 1331, and is blown out from the first air outlet 104 or the second air outlet 105 after being diverted by the nozzle inner shell 1.

[0052] Preferably, in order to improve the smoothness of the gas flow entering the air chamber 103, a guide plate 15 is provided at the bottom of the nozzle inner shell 1 corresponding to the air outlet of the guide assembly 6, and the lower part of the guide plate 15 is an arc-shaped structure and bends toward the middle of the boss 133. There are two guide plates 15 and they are symmetrically arranged on both sides of the nozzle inner shell 1. When the gas in the guide assembly 6 flows out from the air supply channel 1331, the guide plates 15 can guide the gas, so that the airflow flows more smoothly and avoids abnormal noise.

[0053] Preferably, a avoidance groove 1332 is downwardly opened on the side wall of the boss 133 facing the second groove 132. When the first nozzle 11 and the second nozzle 12 are installed on the first support seat 13, the first nozzle 11 and the second nozzle 12 are embedded in the avoidance groove 1332 to prevent the boss 133 from interfering with and limiting the first nozzle 11 and the second nozzle 12, thereby ensuring that the bottom of the first nozzle 11 and the second nozzle 12 are matched in place with the second groove 132.

[0054] like Fig.10 As shown, 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, and 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 substantially the same as those of the second groove 132, and are not repeated herein.

[0055] Preferably, Figures 9 to 11As shown, in order to further improve the installation stability of the first nozzle 11 and the second nozzle 12, the nozzle inner shell 1 also includes a nozzle support plate 16 arranged on the first nozzle 11 and the second nozzle 12, and the upper and lower ends of the nozzle support plate 16 are respectively abutted against the first support seat 13 and the second support seat 14. A third through hole 161 is provided on the nozzle support plate 16, and the first nozzle body 111 and the second nozzle body 121 are both provided with a third fixing column 108 protruding outward and used to connect the nozzle support plate 16. The specific connection structure thereof can be referred to the connection structure between the first nozzle 11 and the first support seat 13, and the present invention will not be repeated here. In this embodiment, the third through holes 161 are arranged at intervals along the length direction of the nozzle support plate 16. Preferably, the upper and lower ends of the nozzle support plate 16 use circular holes, and the middle section uses waist-shaped holes, so as to facilitate assembly.

[0056] In this embodiment, two nozzle support plates 16 are symmetrically arranged on both sides of the first nozzle 11 and the second nozzle 12. A limiting portion 144 is arranged at the joint between the first support seat 13 and the second support seat 14 and the nozzle support plate 16. A limiting cavity 145 for accommodating the end of the nozzle support plate 16 is formed in the limiting portion 144. The end of the nozzle support plate 16 is inserted into the limiting cavity 145 and limited. By providing the nozzle support plate 16, it can support the first nozzle 11 and the second nozzle, and improve the stability of the first nozzle 11 and the second nozzle 12 on the first support seat 13 and the second support seat 14.

[0057] like Figure 3 , Figure 5 and Figure 6 As shown, the inner wall of the nozzle housing 2 is provided with a first plug-in rib 212 and a second plug-in rib 222. The first plug-in rib 212 is provided close to the first air guide hole 211, and the second plug-in rib 222 is provided close to the second air guide hole 221. When the nozzle housing 2 is covered on the nozzle inner housing 1, the first plug-in rib 212 and the second plug-in rib 222 are respectively inserted into the first slot 1121 and the second slot 1221, so that the nozzle housing 2 and the nozzle inner housing 1 are firmly connected. The number of the first plug-in 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 rib 222 corresponds to two and is respectively located on both sides of the second air guide hole 221. The first plug-in rib 212 and the second plug-in rib 222 can support the first air guide hole 211 and the second air guide hole 221 to avoid deformation.

[0058] like Figure 3 , Figure 5 , Figure 6 and Fig.12As shown, the diffuser air switching assembly 3 includes two sets of swing assemblies 3a symmetrically arranged on both sides of the nozzle inner shell 1 and a driving assembly 3b for driving the swing assemblies 3a to move. The two sets of swing assemblies 3a move synchronously and respectively control the opening and closing of the first air outlet 104 and the second air outlet 105 located on both sides of the nozzle inner shell 1.

[0059] The swing assembly 3a includes 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 includes a pull plate body 311 and a pull plate connecting portion 312 located at the upper end of the pull plate body 311. The pull plate body 311 is provided with a sliding portion 3111, and the sliding portion 3111 is inclined toward the first air outlet 101 or the second air outlet 102, and the inclination angle is preferably 30° to 60°.

[0060] The pull plate connection part 312 passes through the second support seat 14 and is accommodated in the upper space of the nozzle housing 2. The side wall of the pull plate connection part 312 is provided with a first guide hole 3121. The first guide hole 3121 is a long strip structure, and its long side is opened in the horizontal direction. The output end of the driving component 3b is arranged in the first guide hole 3121, thereby driving the pull plate 31 to move up and down. The upper end surface of the pull plate connection part 312 is provided with a first mounting groove 3122 that is recessed downward. The swing assembly 3a also includes a transmission plate 34. One side of the transmission plate 34 is fixedly installed in the first mounting groove 3122 of one group of the swing assemblies 3a, and the other side of the transmission plate 34 is fixedly installed in the first mounting groove 3122 of the other group of the swing assemblies 3a. The two symmetrically arranged swing assemblies 3a are connected through the transmission plate 34 to achieve synchronous transmission.

[0061] In this embodiment, the pull plate 31 is arranged in the middle 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 are both provided with outwardly protruding limit plates 109 near the connection between the two, and guide grooves are formed between the limit plates 109 to guide the vertical movement of the pull plate body 311. The width between the limit plates 109 is the same as the width of the pull plate body 311 or slightly larger than the width of the pull plate body 311.

[0062] Combination Fig.13As shown, a protruding sliding rod 321 is provided in the middle of the back of the pull rod 32, and the sliding rod 321 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 sliding groove structure or a sliding hole structure. In order to facilitate assembly, in this embodiment, the sliding part 3111 is specifically a long strip sliding hole, and the sliding rod 321 is penetrated in the sliding part 3111, so that the pull rod 32 and the pull plate 31 are slidably matched. When the pull plate 31 rises or falls, the sliding rod 321 will be pressed by the side wall of the sliding part 3111, so that it moves along the inclined direction of the sliding part 3111. In order to prevent the sliding rod 321 from escaping from the sliding part 3111, a connecting handle 322 is provided at the end of the sliding rod 321. 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 a certain angle. After rotating back a certain angle, it can abut against the end face of the pull plate body 311 and limit the sliding rod 321 from escaping from the sliding part 3111.

[0063] The opening and closing plate 33 is slidably matched with the nozzle inner shell 1. Specifically, the opening and closing plate 33 includes a second guide hole 33a protruding outward, and the nozzle inner shell 1 is provided with a guide column (not shown) protruding outward and penetrating 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 this embodiment, the second guide hole 33a is a long strip structure, and its long side is arranged in the horizontal direction, and the inner width of the second guide hole 33a is slightly larger than the outer diameter of the guide column. Preferably, in this embodiment, the guide column is specifically a third fixed column 108, and the third fixed column 108 protrudes outward from the second guide hole 33a. The nozzle support plate 16 and the opening and closing plate 33 share a fixed column, which can simplify the structure on the one hand; on the other hand, the opening and closing plate 33 is restricted by the nozzle support plate 16 to prevent the opening and closing plate 33 from detaching from the third fixed column 108 outward, and the connection of the opening and closing plate 33 is more stable.

[0064] 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, thereby limiting the movement of the opening and closing plate 33 in the up and down directions and preventing the opening and closing plate 33 from rotating around the third fixing 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.

[0065] The opening and closing plate 33 includes a first opening and closing plate 331 slidably matched on the first nozzle 11 and a second opening and closing plate 332 slidably matched on the second nozzle 12. The two ends of the pull rod 32 are respectively fixed to the first opening and closing plate 331 and the second opening and closing plate 332. When the pull plate 31 moves upward or downward, it can provide a driving force to the pull rod 32 to drive the pull rod 32 to move toward the first air outlet 101 and the second air outlet 102, thereby driving the first opening and closing plate 331 and the second opening and closing plate 332 to move together, and due to the limitation of the third fixing column 108, the first opening and closing plate 331 and the second opening and closing plate 332 will move in the horizontal direction.

[0066] The first opening and closing plate 331 cooperates with the end face 112a of the matching portion of the first nozzle 11 to form the first air outlet section 1041 of the first air outlet 104. The first opening and closing plate 331 includes an arc-shaped first air guide surface 3311 and a second air guide surface 3312 parallel to the end face 112a of the matching portion. When the first opening and closing plate 331 moves toward the first air outlet 101, the second air guide surface 3312 can abut against the end face 112a of the matching portion, thereby blocking the second air outlet section 1042. Preferably, the second air guide surface 3312 and the end face 112a of the matching portion are planes, so as to facilitate molding and can be easily fitted to each other. In other embodiments, the second air guide surface 3312 and the end face 112a of the matching portion can also adopt other surfaces that fit each other, and the present invention is not limited here.

[0067] The second opening and closing plate 332 cooperates with the guide portion 1231 of the air guide plate 123 to form the third air outlet section 1051 of the second air outlet 105. The second opening and closing plate 332 includes an arc-shaped third air guide surface 3321, and the bending direction of the third air guide surface 3321 is the same or substantially the same as the inclination direction of the guide portion 1231. 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 portion 102, the third air guide surface 3321 can abut against the guide portion 1231, thereby blocking the fourth air outlet section 1052.

[0068] The driving assembly 3b is arranged on the second supporting seat 14, and the driving assembly 3b includes a first driving member 35 and a rotating disk 36 installed on a first output shaft 351 of the first driving member 35. The first driving member 35 is specifically a motor. A lever 361 is arranged near the outer side of the end surface of the rotating disk 36, and the lever 361 is inserted into the first guide hole 3121 of the pulling plate 31. When the rotating disk 36 rotates, the lever 361 can rotate with the rotating disk 36, thereby driving the pulling plate 31 to move up and down.

[0069] The working principle of the diffusion wind switching assembly of the nozzle assembly of the present invention is as follows: when the fan is turned on, the airflow is blown out from the first air outlet 104 or the second air outlet 105. When the airflow direction needs to be switched, by opening the first driving member 35, the first driving member 35 rotates and drives the turntable 36 to rotate synchronously, and the lever 361 located on the turntable 36 rotates and drives the pull plate 31 to move upward or downward. The up and down movement of the pull plate 31 will be converted into the pull rod 32 moving toward the first air outlet 104a or the second air outlet 105a. When moving toward the first air outlet 104a, the first opening and closing plate 331 can close the first air outlet 104, so that the airflow is blown out from the second air outlet 105; when the pull rod 32 moves toward the second air outlet 105a, the second opening and closing plate 332 can close the second air outlet 105, so that the wind is blown out from the first air outlet 104.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A bladeless fan, comprising a base and a nozzle assembly arranged on the base, characterized in that: The nozzle assembly comprises a nozzle inner shell and a nozzle outer shell covered outside the nozzle inner shell, the nozzle outer shell is provided with an air guide hole, an inserting convex rib is provided on the inner wall of the nozzle outer shell, the inserting convex rib is provided close to the air guide hole, and a slot for inserting and matching with the inserting convex rib is provided on the nozzle inner shell; The nozzle inner shell comprises a first nozzle, a second nozzle, a first support seat and a second support seat, the first support seat is connected to the bottom of the first nozzle and the second nozzle, and the second support seat is connected to the top of the first nozzle and the second nozzle; The first nozzle and the second nozzle are both provided with air outlets corresponding to the air guide holes, and the nozzle assembly further comprises a diffuser wind switching assembly movably provided on the first nozzle and the second nozzle, and the diffuser wind switching assembly can switch the air outlets and enable one of the air outlets to discharge air; The first nozzle and the diffuser wind switching assembly cooperate to form a first air outlet, the second nozzle and the diffuser wind switching assembly cooperate to form a second air outlet, the air outlets are respectively located on the first air outlet and the second air outlet, and the diffuser wind switching assembly can move and close the first air outlet or the second air outlet; The air outlet direction of the first air outlet is parallel to the hole wall of the first air guide hole, and the air outlet direction of the second air outlet is inclined to the hole wall of the second air guide hole; The second air outlet duct includes a third air outlet section and a fourth air outlet section, the fourth air outlet section is arranged on the side wall of the second nozzle body, the fourth air outlet section is inclined toward the middle of the second air guide hole, the second nozzle also includes an air guide plate arranged on the second nozzle body, the air guide plate is provided with a guide portion inclined toward the middle of the second air guide hole, the guide portion cooperates with the diffusion wind switching assembly to form a third air outlet section, and the airflow is blown toward both sides of the second air guide hole to the outside along the inclined third air outlet section and the fourth air outlet section.

2. The bladeless fan according to claim 1, characterized in that: The number of the plug-in convex ribs is two, and the plug-in convex ribs are respectively located on both sides of the air guide hole, and the number of the slots is correspondingly two.

3. The bladeless fan according to claim 1, characterized in that: The first nozzle and the second nozzle cooperate to form an air guide channel. The number of the first air outlet channels is two and they are respectively located on both sides of the first nozzle. The number of the second air outlet channels is two and they are respectively located on both sides of the second nozzle.

4. The bladeless fan according to claim 1, characterized in that: The nozzle inner shell also includes a plurality of nozzle support plates, which are respectively mounted on the first nozzle and the second nozzle, the upper end of the nozzle support plate abuts against the second support seat, and the lower end of the nozzle support plate abuts against the first support seat.

5. The bladeless fan according to claim 1, characterized in that: The first nozzle and the second nozzle are plug-fitted, and the first nozzle and the second nozzle are both provided with upwardly bent hooks near the joints thereof, and a locking plate is hung on the hooks to limit the separation of the first nozzle and the second nozzle.

6. The bladeless fan according to claim 5, characterized in that: The locking plate is provided with a mounting hole, through which the locking plate is hung on the first nozzle and the second nozzle, and the hook side wall is restricted in the mounting hole.

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