Bladeless fan

Abstract

The present invention relates to a bladeless fan, including a nozzle assembly, wherein the nozzle assembly includes two oppositely arranged air outlets, a diffuser wind switching assembly is arranged in the nozzle assembly, the diffuser wind switching assembly includes a pull plate and a pull rod movably arranged on the pull plate, the pull plate can move up and down, the pull rod can convert the up and down movement of the pull plate into movement toward the air outlet, both ends of the pull rod are fixedly provided with opening and closing plates, the opening and closing plates are arranged corresponding to the air outlets, and the opening and closing plates can move toward the air outlets and close the air outlets. The bladeless fan of the present invention is provided with two air outlets on the nozzle assembly and a diffuser wind switching assembly, and the diffuser wind switching assembly can switch the air outlets according to actual needs, thereby changing the air outlet direction of the nozzle assembly, thereby improving the convenience of use.

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 of a bladeless fan usually has only one air outlet, and the airflow generated by the wind wheel assembly is blown out along the air outlet of the nozzle assembly. However, the air outlet can only blow air in front of it, and the entire body needs to be rotated when the air outlet direction is adjusted, which brings a lot of inconvenience to users in daily life. Summary of the invention

[0003] The object of the present invention is to provide a bladeless fan, which can adjust the air outlet direction according to actual needs.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bladeless fan, comprising a nozzle assembly, the nozzle assembly comprising two oppositely arranged air outlet parts, a diffuser wind switching assembly is arranged in the nozzle assembly, the diffuser wind switching assembly comprises a pull plate and a pull rod movably arranged on the pull plate, the pull plate can move up and down, the pull rod can convert the up and down movement of the pull plate into movement toward the air outlet, opening and closing plates are fixedly arranged at both ends of the pull rod, the opening and closing plates are arranged corresponding to the air outlet part, and the opening and closing plates can move toward the air outlet part and close the air outlet part.

[0005] Furthermore, the bladeless fan comprises a deflector assembly and a wind wheel assembly which are arranged below the nozzle assembly, and the deflector assembly is respectively connected to the wind wheel assembly and the nozzle assembly.

[0006] Furthermore, the nozzle assembly includes a nozzle inner shell and a nozzle outer shell covered outside the nozzle inner shell, and the nozzle inner shell and the nozzle outer shell cooperate to form an air containing chamber for accommodating the diffusion wind switching assembly, and the diffusion wind switching assembly is fixed on the nozzle inner shell.

[0007] Furthermore, the opening and closing plate and the nozzle inner shell cooperate to form a first air outlet and a second air outlet, the first air outlet and the second air outlet are respectively connected to different air outlet parts, and the opening and closing plate can be abutted against the nozzle inner shell to close the air outlet.

[0008] Furthermore, the nozzle inner shell includes a first nozzle and a second nozzle that are matched with each other, the opening and closing plate includes a first opening and closing plate located at the first nozzle, the first air outlet duct includes a first air outlet section and a second air outlet section, the first air outlet section is formed by the first opening and closing plate and the first nozzle, the second air outlet section is formed on the first nozzle and is connected to the air outlet part, and the first opening and closing plate can abut against the first nozzle to block the first air outlet section.

[0009] Furthermore, the second air outlet duct includes a third air outlet section and a fourth air outlet section, the opening and closing plate includes a second opening and closing plate located at the second nozzle, an air guide plate is provided on the second nozzle, the second opening and closing plate and the air guide plate cooperate to form the third air outlet section, the fourth air outlet section is formed on the second nozzle and communicated with the outside, and the second opening and closing plate can abut against the air guide plate to block the third air outlet section.

[0010] Furthermore, the third air outlet section is tilted to change and expand the air outlet angle of the fourth air outlet section.

[0011] Furthermore, the nozzle inner shell and the nozzle outer shell are plug-fitted.

[0012] Furthermore, the bladeless fan comprises a top shell assembly arranged above the nozzle assembly, and the top shell assembly is coupled with the nozzle assembly in a screw-on manner.

[0013] Furthermore, a first sealing ring and a second sealing ring are provided between the deflector assembly and the wind wheel assembly to seal the connection between the two.

[0014] The beneficial effects of the present invention are as follows: the bladeless fan of the present invention is provided with two air outlets on the nozzle assembly, and a diffusion wind switching assembly is provided on the nozzle inner shell of the nozzle assembly. The diffusion wind switching assembly can switch the air outlets according to actual needs, thereby changing the air outlet direction of the nozzle assembly, thereby improving convenience of use.

[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 It is a cross-sectional view of the bladeless fan of the present invention.

[0018] Figure 3 yes Figure 2A partial enlarged view of the bladeless fan at point A.

[0019] Figure 4 yes Figure 2 A partial enlarged view of the bladeless fan at point B.

[0020] Figure 5 yes Figure 2 A partial enlarged view of the bladeless fan at point C.

[0021] Figure 6 It is a cross-sectional view of the bladeless fan of the present invention in another direction.

[0022] Figure 7 yes Figure 6 A partial enlarged view of the bladeless fan at point D.

[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 Exploded view of the nozzle inner shell.

[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 nozzle housing and top housing assembly of the bladeless fan of the present invention.

[0028] Fig.13 It is an exploded schematic diagram of the diffuser air switching assembly of the bladeless fan of the present invention.

[0029] Fig.14 yes Fig.13 Schematic diagram of the structure of the pull rod of the diffuser air switching assembly.

[0030] Fig.15 It is an exploded schematic diagram of the top shell assembly of the bladeless fan of the present invention.

[0031] Fig.16 yes Fig.15 A schematic structural diagram of a top shell cover of a top shell assembly.

[0032] Fig.17 It is an exploded schematic diagram of the wind wheel assembly and the deflector assembly of the bladeless fan of the present invention.

[0033] Fig.18 yes Fig.17 Cross-sectional view of the deflector assembly.

[0034] Fig.19 yes Fig.17 Schematic diagram of the installation of the sealing ring pressure ring and deflector housing of the deflector assembly.

[0035] Fig. 20 yes Fig.18 A partial enlarged view of the deflector assembly at position E. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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 connection 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. 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.

[0039] like Figure 1 and Figure 2As 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.

[0040] Combination Figure 2 and Figure 6 As 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 (ground).

[0041] 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.

[0042] 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.

[0043] like Figures 2 to 4 , Figure 8 and Fig. 9 As 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 from 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 housing 2 is in contact with the outer wall of the first support seat 13, and the inner wall at the top of the nozzle housing 2 is in contact with the outer wall of the second support seat 14. For the convenience of subsequent description, in this 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.

[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. Figures 2 to 4 As shown, the first nozzle 11 includes a first nozzle body 111 and a first matching portion 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 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. The 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. The first nozzle body 111 includes a first end face 111b facing the second air outlet end 20, and a convex portion 1111 for plugging with the second nozzle 12 is provided on the first end face 111b, and the convex portion 1111 protrudes outwardly relative to the first end face 111b. In this embodiment, the convex portion 1111 is an annular convex portion arranged along the end face contour.

[0045] 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.

[0046] 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.

[0047] Preferably, the number of the first air outlet ducts 104 is two and they are symmetrically arranged on both sides of the first nozzle body 111, so that the 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. Preferably, a plurality of first reinforcing ribs 113 are arranged in the second air outlet section 1042 of the first air outlet duct 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, it is possible to support the first air outlet duct 104 and prevent deformation at the outlet of the first air outlet duct 104.

[0048] The bottom and top of the second nozzle 12 are fixedly connected to the first support seat 13 and the second support seat 14 respectively. Figure 2 , Figure 3 and Figure 5As 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. 9 As 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. Specifically, 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 they are 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.

[0049] 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.

[0050] The second nozzle 12 and the diffuse wind switching assembly 3 cooperate to form a second air outlet 105. The number of second air outlets 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, thereby guiding the external wind from the second air guide channel 121a to blow toward 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, and its specific structure 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, increasing the blowing area. 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.

[0051] 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 .

[0052] like Figure 6 and Figure 8 As shown, the first support seat 13 is covered outside the wind wheel assembly 200 and the deflector assembly 6. A boss 133 is provided 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.

[0053] 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.

[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, in order to further improve the installation stability of the first nozzle 11 and the second nozzle 12, the nozzle inner housing 1 further includes a nozzle support plate 16 disposed 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. Fig. 9 and Fig.11 As shown, a through hole 161 is provided on the nozzle support plate 16, and both the first nozzle body 111 and the second nozzle body 121 are provided with a fixing column 108 protruding outward and used to connect the nozzle support plate 16, and the through hole 161 and the fixing column 108 are fixed by a threaded fastener. In this embodiment, the through holes 161 are arranged at intervals along the length direction of the nozzle support plate 16. Preferably, the through holes 161 at the upper and lower ends of the nozzle support plate 16 are circular holes, and the middle section is a waist-shaped hole, 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 4 , Figure 5 and Fig.12 As shown, the nozzle housing 2 includes a first housing half 21 and a second housing half 22 that are matched with each other, and the first housing half 21 and the second housing half 22 are fixedly connected by means of glue or the like. The first housing half 21 and the second housing half 22 cooperate to form a receiving cavity 23 for receiving the nozzle inner housing 1. The first air guide hole 211 is provided on the first housing half 21, and the second air guide hole 221 is provided on the second housing 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 conventional usage habits, in this embodiment, the first housing half 21 is arranged at the front end of the fan, and the second housing 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, and 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 portion 101, and realize the forward air outlet of the fan; the second nozzle 12 is arranged at the rear end of the fan, and 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 portion 102, and realize the backward air outlet of the fan.

[0058] 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 ribs 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 ribs 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.

[0059] In addition, the nozzle housing 2 further comprises a housing support plate 24 disposed at the top of the first housing half 21 and the second housing half 22, and a screw-on support 25 disposed on the nozzle housing support plate 24, and the screw-on support 25 is used for rotationally matching with the top housing assembly 4. The screw-on support 25 is an annular structure as a whole, and a plurality of screw-on grooves 251 are provided on the end surface of the screw-on support 25 along its circumference, and one end of the screw-on groove 251 along the rotational installation direction is an open end, and the other end is provided with a screw-on portion 252 extending upward, and the screw-on portion 252 extends in the rotational installation direction to the top of the screw-on groove 251, so that the other end of the screw-on groove 251 is a closed side, thereby forming a closed space for accommodating and limiting the movement of the top housing assembly 4.

[0060] like Figure 2 , Figure 4 , Figure 5 and Fig.13 As 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.

[0061] 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. A sliding portion 3111 is provided on the pull plate body 311, 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°. The pull plate connecting portion 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 connecting portion 312 is provided with a first guide hole 3121, and 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 assembly 3b is arranged in the first guide hole 3121, thereby driving the pull plate 31 to move up and down. A first mounting groove 3122 which is recessed downward is formed on the upper end surface of the pull plate connection portion 312. The swing assembly 3a further includes a transmission plate 34. One side of the transmission plate 34 is fixedly mounted in the first mounting groove 3122 of one group of swing assemblies 3a. The other side of the transmission plate 34 is fixedly mounted in the first mounting groove 3122 of the other group of swing assemblies 3a. The two symmetrically arranged swing assemblies 3a are connected via the transmission plate 34 to achieve synchronous transmission.

[0062] 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.

[0063] like Fig.14 As 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.

[0064] 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 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. The nozzle inner shell 1 is provided with a guide column (not shown) protruding outward and passing through the second guide hole 33a, so that the opening and closing plate 33 can slide along the long side of the second guide hole 33a. Preferably, in this embodiment, the guide column is specifically a fixed column 108, and the 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 108, 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 fixed column 108 outward, and the connection of the opening and closing plate 33 is more stable.

[0065] 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 up and down directions and prevent the opening and closing plate 33 from rotating around the fixed column 108. For the convenience of assembly, a certain gap can be left between the upper part of the opening and closing plate 33 and the second support seat 14. 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 fixed to the first opening and closing plate 331 and the second opening and closing plate 332, respectively. 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 fixed column 108, the first opening and closing plate 331 and the second opening and closing plate 332 will move in the horizontal direction. Preferably, in this embodiment, the number of the pull rods 32 is multiple and they are spaced apart along the length direction of the pull plate 31, and the sliding part 3111 is correspondingly multiple. By providing multiple pull rods 32 connected to the opening and closing plate 33, the connection of the opening and closing plate 33 is more stable.

[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] like Fig.12 , Fig.15 and Fig.16 As shown, the top shell assembly 4 is arranged on the top of the nozzle housing 2 and closes the top of the nozzle housing 2. The top shell assembly 4 includes a top shell cover 41, and the top shell cover 41 includes a top shell cover plate 411 and a cover portion 412 extending downward along the periphery of the top shell cover plate 411. The lower end surface of the top shell cover plate 411 is protruding downward and is provided with at least one second mounting groove 4111, and the second mounting groove 4111 is embedded with a magnetic member 45, and the magnetic member 45 is specifically a magnet. The remote control of the bladeless fan of the present invention is provided with a material that can be adsorbed by the magnetic member 45. When the remote control (not shown) is placed on the top shell cover plate 411, the magnetic member 45 can adsorb the remote control, thereby preventing the remote control from falling from the top shell cover plate 411. Preferably, in this embodiment, the number of the second mounting grooves 4111 is two and they are arranged oppositely on both sides of the top shell cover plate 411 to further improve the stability of the remote control.

[0071] The cover part 412 extends into the nozzle housing 2 and is rotationally connected with the turn-lock support 25. The side wall of the cover part 412 is provided with a plurality of connection grooves 4121 along its circumference, and the connection grooves 4121 are arranged one by one with the turn-lock groove 251. A turn-lock block 4122 is arranged at one end of the connection groove 4121 along the rotational installation direction, and the other end is an open end, and the turn-lock block 4122 extends toward the open end to the top of the connection groove 4121. When the turn-lock block 4122 is inserted from the open end of the turn-lock groove 251 and rotated to the closed end of the turn-lock groove 251, the turn-lock block 4122 and the turn-lock part 252 are mutually engaged, so that the top shell assembly 4 and the turn-lock support 25 are fastened and connected. The top shell assembly 4 is connected with the nozzle housing 2 by a turn-lock connection, and there is no need to add other connecting parts and external auxiliary tools for assembly. It is convenient to disassemble and assemble, which greatly improves the installation efficiency.

[0072] The top shell assembly 4 also includes a keypad 42 for controlling the fan switch and a key 43 for pressing the keypad 42. The keypad 42 is specifically a PCBA board. The lower end surface of the top shell cover 411 is provided with a mounting portion 44 for fixing the keypad 43 and the keypad 42. The key 43 is located above the keypad 42, and the key 43 includes a pressing portion 431 and a supporting portion 432 connected to the pressing portion 431. A mounting through hole 4112 is provided on the top shell cover 411, and the pressing portion 431 is arranged in the mounting through hole 4112. The mounting portion 44 includes a first connecting column 441, and the supporting portion 432 is connected to the first connecting column 441, so as to support and fix the pressing portion 431. The keypad 42 is accommodated in the cover 412, and the mounting portion 44 also includes a mounting platform 443, and the keypad 42 is limited and fixed at the mounting platform 443. Preferably, in order to facilitate production, in this embodiment, the mounting portion 44 and the top shell cover 41 are integrally formed.

[0073] like Fig.17 and 18 As shown, the deflector assembly 6 includes a deflector housing 61 and a deflector cover 62 disposed in the deflector housing 61. A deflector channel 63 is formed between the outer wall of the deflector cover 62 and the inner wall of the deflector housing 61, and the deflector channel 63 is connected to the air supply channel 1331. The wind wheel assembly 200 includes a wind wheel outer shell 201 and a wind wheel inner shell 202, and an air inlet channel 203 is formed between the wind wheel outer shell 201 and the wind wheel inner shell 202. The wind wheel assembly 200 partially extends into the deflector channel 63 and connects the air inlet channel 203 with the deflector channel 63. The wind blown out through the air inlet channel 203 is guided by the deflector channel 63 and enters the air supply channel 1331.

[0074] The deflector housing 61 is a structure with openings at the top and bottom. The top of the deflector housing 61 is matched with the bottom of the first support seat 13. Figure 7As shown, the top of the deflector housing 61 is provided with a first stopper 611 along its side, and the bottom of the first support seat 13 is correspondingly provided with a second stopper 612, and the first stopper 611 and the second stopper 612 are mutually buckled. In other embodiments, threaded fasteners may also be provided to achieve the connection between the two, and the present invention is not limited thereto.

[0075] In addition, the deflector housing 61 is further provided with a first receiving portion 613 corresponding to the first nozzle 11 and the second nozzle 12, and the two ends of the first receiving portion 613 are respectively connected to the inner wall of the deflector housing 61. A fourth groove 6131 is provided on the first receiving portion 613, and the fourth groove 6131 is an arc groove with the same bottom profile as the first nozzle 11 and the second nozzle 12. When the deflector housing 61 is buckled under the first support seat 13, the fourth groove 6131 can cooperate with the second groove 132, so as to firmly connect the bottoms of the first nozzle 11 and the second nozzle 12.

[0076] Preferably, in order to improve the support strength of the first receiving portion 613, a support rib 614 is further provided on the deflector housing 61, and the two ends of the support rib 614 are respectively connected to the first receiving portion 613 and the inner wall of the deflector housing 61. In this embodiment, the support rib 614 is located in the middle of the first receiving portion 613, and the number of the support ribs 614 is two and they are oppositely arranged on both sides of the first receiving portion 613.

[0077] A second receiving portion 615 is provided on the side wall of the bottom of the deflector housing 61. A convex ring 617 extends downward along the circumference of the bottom of the deflector housing 61, and a first sealing ring 64 is provided on the convex ring 617. The first sealing ring 64 abuts against the wind wheel housing 201 of the wind wheel assembly 200, thereby closing the gap between the wind wheel assembly 200 and the deflector housing 61.

[0078] The first sealing ring 64 includes an annular first sleeve portion 641 and a first sealing portion 642 formed on the inner circle of the first sleeve portion 641. A first embedding groove 6411 is provided from top to bottom on the upper end surface of the first sleeve portion 641. The first embedding groove 6411 is provided along the circumference of the first sleeve portion 641. The width of the first embedding groove 6411 is equal to or slightly less than the thickness of the convex ring 617. The first sealing ring 64 is embedded in the convex ring 617 through the first embedding groove 6411. The first sealing portion 642 has a certain elasticity and bends inwardly. When the wind wheel assembly 200 is extended into the guide channel 63, the wind wheel housing 201 of the wind wheel assembly 200 abuts against the first sealing portion 642. The first sealing portion 642 bends outwardly to avoid the position, and under the action of the elastic force, the first sealing portion 642 is tightly abutted against the housing of the wind wheel assembly 200.

[0079] Preferably, in order to improve the tight fit between the first sealing ring 64 and the convex ring 617, a sealing ring pressing ring 65 is further provided on the deflector housing 61. The sealing ring pressing ring 65 is clamped on the deflector housing 61 and abuts against the side surface and the lower end surface of the first sealing ring 64. Fig.19 As shown, a buckle 651 is provided on the side wall of the sealing ring pressing ring 65, and a bayonet 6151 is correspondingly provided on the second receiving portion 615 of the deflector housing 61, and the buckle 651 passes through the bayonet 6151 and abuts against the second receiving portion 615. In this embodiment, a plurality of buckles 651 are evenly distributed along the circumference of the sealing ring pressing ring 65, and a plurality of bayonet 6151 are provided and correspond one to one with the buckles 651. During installation, the sealing ring pressing ring 65 is installed into the bayonet 6151 of the deflector housing 61 from bottom to top.

[0080] The air deflector 62 is accommodated in the deflector housing 61 and connected to the first receiving portion 613. The side wall of the air deflector 62 is provided with at least one second connecting column 621, and the second connecting column 621 extends upward in the vertical direction. The first receiving portion 613 is correspondingly provided with a third connecting column (not shown) 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) is provided between the second connecting column 621 and the third connecting column, thereby realizing the connection between the air deflector 62 and the air deflector housing 61. In this embodiment, the number of the second connecting columns 621 is two and they are arranged oppositely on both sides of the air deflector 62, and the number of the third connecting columns is correspondingly two.

[0081] The bottom of the air deflector 62 is located on the wind wheel inner shell 202 of the wind wheel assembly 200, and a second sealing ring 66 is provided between the air deflector 62 and the wind wheel inner shell 202. Specifically, the bottom of the air deflector 62 is provided with a flange 622 protruding outward, and 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. The inner wall of the second sleeve portion 661 is provided with a second embedding groove 6611 from the inside to the outside, and the second embedding groove 6611 is provided along the circumference of the second sleeve portion 661. The width of the second embedding groove 6611 is equal to or slightly less than the thickness of the flange 622, and the second sealing ring 66 is sleeved outside the flange 622 through the second embedding groove 6611.

[0082] The second sealing portion 662 protrudes downward and bends outward relative to the second sleeve portion 661, and 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 Fig. 20As 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, and the shock absorbing ring 663 contacts the wind wheel inner shell 202 and performs shock absorption on the wind wheel assembly 200. Preferably, in this embodiment, the number of shock absorbing rings 663 is two. By providing the first sealing ring 64 and the second sealing ring 66, it is possible to effectively seal the gap between the guide channel 63 and the air inlet channel 203 to prevent wind leakage.

[0083] 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.

[0084] 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 nozzle assembly, characterized in that: The nozzle assembly includes two air outlets arranged opposite to each other, a diffuser switch assembly is arranged inside the nozzle assembly, the diffuser switch assembly includes a pull plate and a pull rod movably arranged on the pull plate, the pull plate can move up and down, the pull rod can convert the up and down movement of the pull plate into movement toward the first air outlet or the second air outlet, both ends of the pull rod are fixedly provided with opening and closing plates, the opening and closing plates are arranged corresponding to the air outlet, and the opening and closing plates can move toward the air outlet and close the air outlet; The nozzle assembly comprises a nozzle inner shell and a nozzle outer shell covered outside the nozzle inner shell, the nozzle inner shell and the nozzle outer shell are plugged together; a first plugging convex rib and a second plugging convex rib are arranged on the inner wall of the nozzle outer shell, the nozzle inner shell comprises a first nozzle and a second nozzle, a first matching portion of the first nozzle is provided with a first slot recessed inwardly, a second matching portion of the second nozzle is provided with a second slot recessed inwardly, and the first plugging convex rib and the second plugging convex rib are respectively inserted into the first slot and the second slot; The opening and closing plate and the nozzle inner shell cooperate to form a first air outlet duct and a second air outlet duct; the air outlet direction of the first air outlet duct is parallel to the hole wall of the first air guide hole, and the air outlet direction of the second air outlet duct is inclined to the hole wall of the second air guide hole.

2. The bladeless fan according to claim 1, characterized in that: The bladeless fan comprises a deflector assembly and a wind wheel assembly which are arranged below the nozzle assembly, and the deflector assembly is respectively connected to the wind wheel assembly and the nozzle assembly.

3. The bladeless fan according to claim 2, characterized in that: The nozzle inner shell and the nozzle outer shell cooperate to form an air containing cavity for accommodating the diffuser wind switching assembly, and the diffuser wind switching assembly is fixed on the nozzle inner shell.

4. The bladeless fan according to claim 3, characterized in that: The first air outlet duct and the second air outlet duct are respectively communicated with different air outlet portions, and the opening and closing plate can abut against the nozzle inner shell to close the air outlet duct.

5. The bladeless fan according to claim 4, characterized in that: The nozzle inner shell includes a first nozzle and a second nozzle that are matched with each other, the opening and closing plate includes a first opening and closing plate located at the first nozzle, the first air outlet duct includes a first air outlet section and a second air outlet section, the first air outlet section is formed by the first opening and closing plate and the first nozzle, the second air outlet section is formed on the first nozzle and is connected to the air outlet part, and the first opening and closing plate can abut against the first nozzle to block the first air outlet section.

6. The bladeless fan according to claim 5, characterized in that: The second air outlet duct includes a third air outlet section and a fourth air outlet section, the opening and closing plate includes a second opening and closing plate located at the second nozzle, an air guide plate is provided on the second nozzle, the second opening and closing plate and the air guide plate cooperate to form the third air outlet section, the fourth air outlet section is formed on the second nozzle and communicated with the outside, and the second opening and closing plate can abut against the air guide plate to block the third air outlet section.

7. The bladeless fan according to claim 6, characterized in that: The third air outlet section is tilted to change and expand the air outlet angle of the fourth air outlet section.

8. The bladeless fan according to claim 1, characterized in that: The bladeless fan comprises a top shell assembly arranged above the nozzle assembly, and the top shell assembly is coupled with the nozzle assembly in a screw-on manner.

9. The bladeless fan according to claim 2, characterized in that: A first sealing ring and a second sealing ring are provided between the deflector assembly and the wind wheel assembly to seal the connection between the two.

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