Visually suspended fan with airflow guiding structure

Abstract

A visually suspended fan with an air-guiding structure includes multiple rear-net air-guiding blades arranged in the inner ring area of ​​the rear net, forming a first spiral air-guiding array around the center of the rear net in a first spiral direction. In the inner ring area of ​​the front net, multiple front-net air-guiding blades are arranged in a second spiral direction around the center of the front net, forming a second spiral air-guiding array opposite to the first spiral direction. The impeller blades are positioned between these two air-guiding arrays with opposite spiral directions. The tangential direction of the inlet edge (near the rear net) of the fan blades is the same as the spiral direction of the rear-net air-guiding blades at the corresponding position, reducing airflow vortices and resistance, thus effectively increasing the intake air volume. The tangential direction of the outlet edge (near the front net) of the fan blades is opposite to the spiral direction of the front-net air-guiding blades at the corresponding position, effectively increasing the outlet air velocity and delivery distance.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to a visually suspended fan with an optimized air guiding system. Background Technology

[0002] The visually levitating fan creates a unique visual effect by incorporating a transparent structure in the center of the fan, making the blades and grille appear to float in mid-air. However, in pursuing the ultimate aesthetic, core airflow performance should not be sacrificed.

[0003] Existing visually levitating fans, exemplified by CN 207847977U, primarily innovate by achieving a levitating visual effect through a transparent structure. Although their manual mentions that the annular fan grille can be composed of spokes and vaguely states that it has a better airflow guiding effect, it does not provide any synergistic or specific optimization design for the airflow guide blades of the front and rear grilles.

[0004] In traditional fans, the guide vanes (or protective strips) of the front and rear grilles are usually designed as simple radial straight lines or a single spiral direction. Their main function is protection and safety, with limited effect on guiding and optimizing airflow. For visual suspension fans, which have a compact structure and special airflow path, traditional guide vane designs may lead to airflow turbulence, increased wind resistance, and increased noise, ultimately affecting airflow efficiency and user experience.

[0005] Therefore, it is necessary to design an air guiding system that can significantly improve the aerodynamic performance of the visual suspension fan, taking into account its structural characteristics. Summary of the Invention

[0006] The technical problem this invention aims to solve is the lack of optimization in the aerodynamic performance of existing visual levitation fans due to their simple airflow guiding structure. This invention provides a visual levitation fan with an airflow guiding structure. The system utilizes front and rear mesh airflow guide blades with opposite spiral directions, designed in coordination with the fan blade rotation direction, effectively improving the fan's intake air volume and exhaust air velocity, achieving a balance between aesthetics and high performance.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A visually suspended fan with an airflow guiding structure includes a fan assembly, a front grille assembly, and a rear grille assembly. The fan assembly includes a fan motor and an impeller driven by the fan motor. The front grille assembly and the rear grille assembly together surround the fan assembly, wherein: The rear net assembly includes a rear net and a transparent support member fixed in the central through hole of the rear net. The front net assembly includes a front net and a transparent support member fixed in the central through hole of the front net. The impeller includes fan blades and a transparent ring located inside the fan blades. In the assembled state, the transparent support member of the rear net, the transparent ring of the impeller, and the transparent support member of the front net are arranged sequentially in the front-to-back direction. The inner ring area of ​​the rear net is provided with multiple rear net air guide blades, and all the rear net air guide blades are arranged around the center of the rear net along the first spiral direction to form a first spiral air guide array. The inner ring area of ​​the front net is provided with multiple front net air guide blades, and all the front net air guide blades are arranged around the center of the front net along the second spiral direction to form a second spiral air guide array; Wherein, the first spiral direction is opposite to the second spiral direction; the impeller blades are disposed between the first spiral air guide array and the second spiral air guide array; The impeller blades have an inlet side facing the wind and an outlet side for discharging air; the tangential direction of the inlet side of the blades is the same as the helical direction of the rear guide vanes at the corresponding position, and the tangential direction of the outlet side of the blades is opposite to the helical direction of the front guide vanes at the corresponding position.

[0008] Furthermore: Both the rear and front air deflectors are airfoil structures with a windward and a leeward side.

[0009] The rear and front guide vanes are arranged symmetrically with respect to the rotation axis of the impeller.

[0010] It also includes a lamp plate, which is disposed at the central through hole of the rear mesh transparent support member; the front mesh assembly also includes an annular lampshade, which is disposed around the central through hole of the front mesh; the light emitted by the lamp beads disposed on the lamp plate is directed radially toward the disk wall of the rear mesh transparent support member, and after being reflected by the disk wall, it is directed forward and passes through the transparent ring of the impeller and the front mesh transparent support member in sequence to illuminate the lampshade.

[0011] The rear mesh transparent support is an integrally polished transparent disc, which includes a disc bottom and a disc wall extending from the disc bottom, and the disc wall is a reflective wall.

[0012] It also includes a main unit assembly for supporting the fan, which includes a housing and a battery module, an oscillating motor, and a control circuit board disposed within the housing.

[0013] This utility model has the following beneficial effects: 1. Significantly improves air volume and air speed: Through the synergistic mechanism of "rear mesh guiding air intake in the same direction" and "front mesh shearing air out in the opposite direction", the intake efficiency and air quality of the fan are systematically optimized, achieving a dual improvement in air volume and air speed.

[0014] 2. Reduced noise and energy consumption: Smooth air intake guidance and orderly air outlet arrangement reduce airflow impact, separation and turbulence, thereby reducing operating noise and wind resistance, and helping to reduce motor power consumption under the same air volume.

[0015] 3. Balancing Aesthetics and Performance: While achieving high performance, the spiral blades of this air guiding system also give the product a stronger dynamic beauty and design sense, complementing the visually floating theme without compromising the overall aesthetic effect.

[0016] 4. Simple structure and easy to implement: This technical solution does not require the addition of extra complex moving parts. It can be achieved simply by redesigning the shape and direction of the guide vanes of the existing front and rear mesh covers. The modification cost is low and it is easy to industrialize. Attached Figure Description

[0017] Figure 1 This is a front view of the external shape of an embodiment of the present utility model; Figure 2 This is a modular exploded view of an embodiment of the present utility model; Figure 3 This is an exploded view of the host component according to an embodiment of the present utility model; Figure 4 This is an exploded view of the rear grille assembly, fan assembly, and front grille assembly according to an embodiment of the present utility model; Figure 5 This is a cross-sectional schematic diagram of an embodiment of the present utility model; Figure 6 yes Figure 5 A magnified view of part A; Figure 7 This is a schematic diagram of the light illumination direction according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the rear mesh transparent component and the light panel after assembly according to an embodiment of this utility model; Figure 9 yes Figure 8 A schematic diagram of the cross-section; Figure 10 This is a three-dimensional schematic diagram of the impeller according to an embodiment of the present utility model; Figure 11 This is a schematic diagram showing that the air guide vanes of the front and rear nets of this utility model are arranged in opposite directions. Figure 12This is a schematic diagram showing that when the fan blades rotate, the air inlet edge of the fan blades and the guide vanes of the rear mesh are tilted in the same direction. Figure 13 This is a schematic diagram showing that when the fan blades rotate, the air outlet edge of the fan blades and the guide vanes of the front grille are tilted in opposite directions. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1 to 6 As shown, the visual levitation fan embodiment of this utility model includes four main modules: a main unit assembly 100, a rear grille assembly 200, a fan assembly 300, and a front grille assembly 400. The fan assembly 300 includes a fan motor 330 and an impeller 340 driven by the fan motor 330. The front grille assembly 400 and the rear grille assembly 200 together surround the fan assembly 300.

[0020] The rear net assembly 200 includes a rear net 220 and a transparent support member 230 fixedly disposed within a central through-hole 221 of the rear net. The transparent support member 230 has a central through-hole 231. In some embodiments, the rear net assembly 200 further includes a rear net bracket 210, which is fixedly connected to a motor bracket 310. The motor bracket 310 of the fan motor passes through the central through-hole 231 of the transparent support member and is fixedly connected to the rear net assembly 200.

[0021] The impeller 340 includes a central groove 341 for accommodating the fan motor 330, a transparent ring 342 located around the central groove, and a fan blade 343 located around the transparent ring; the central groove 341 of the impeller is sleeved outside the fan motor 330.

[0022] The front mesh assembly 400 includes a front mesh 410 and a transparent front mesh support 440 fixedly disposed within a central through-hole 411 of the front mesh. The front mesh assembly 400 also includes a decorative cover 430 for closing the central through-hole 441 of the transparent front mesh support 440, the decorative cover 430 shielding the central groove 341 of the impeller 340 from the front.

[0023] like Figures 4 to 9 As shown, it also includes a lamp plate 320, which is disposed at the central through hole 231 of the rear mesh transparent support 230. The light emitted by the lamp beads 321 disposed on the lamp plate 320 is directed radially toward the disk wall 233 of the rear mesh transparent support 230, reflected by the disk wall and emitted forward, passing sequentially through the transparent ring 342 of the impeller and the front mesh transparent support 440.

[0024] The front mesh assembly 400 also includes an annular lampshade 420, which is disposed around the central through-hole 411 of the front mesh 410 for receiving and diffusing light emanating from the rear.

[0025] like Figure 7 and Figure 9 As shown, the transparent support member 230 of the rear net is an integrally polished transparent disc, which includes a disc bottom 232 and a disc wall 233 extending from the disc bottom, the disc wall forming an inclined surface for light reflection.

[0026] During assembly, the transparent support member 230 of the rear net is embedded into the central through hole 221 of the rear net 220, and then the motor bracket 310 is passed through the central through hole 231 of the transparent support member 230 of the rear net. The motor bracket 310 and the rear net bracket 210 are fixedly connected by screws or other means.

[0027] Next, the lamp panel 320 and the fan motor 330 are mounted on the motor bracket 310, and the central groove 341 of the impeller 340 is fitted over the fan motor 330, so that the fan motor 330 is completely contained within the central groove 341 of the impeller 340. The transparent ring 342 of the impeller 340 faces the transparent support member 230 of the rear screen in the front-to-back direction.

[0028] Next, assemble the front mesh assembly 400, insert the transparent front mesh support 440 into the central through hole 411 of the front mesh 410, and install the annular lampshade 420 on the front mesh 410. Finally, align and fasten the entire front mesh assembly 400 with the rear mesh assembly 200, securing it with latches or similar means. At this point, the transparent front mesh support 440 faces the transparent ring 342 of the impeller in the front-to-back direction. The decorative cover 430 closes the central hole 441 of the transparent front mesh support 440 from the front and covers the central groove 341 of the impeller.

[0029] Thus, the transparent rear support 230, the transparent impeller ring 342, and the transparent front support 440 together form a seamless and continuous transparent visual area. During operation, the impeller 340 rotates at high speed, but the motor 330 at its center is completely hidden, and the rotational dynamics of the transparent ring 342 are not easily detected, making the outer fan blades 343 and the front and rear screens appear to be suspended in the air.

[0030] like Figure 1 , Figure 3 and Figure 5As shown, the system also includes a main unit assembly 100 for supporting the fan. The main unit assembly 100 includes an upper shell 111, a lower shell 112, a battery 120, an oscillating motor 130, a main control board 140, an oscillating rotation bracket 150, and a base 160. The upper shell 111 and lower shell 112 are combined to form a housing, and the battery 120, oscillating motor 130, main control board 140, and oscillating rotation bracket 150 are all housed within the housing. The oscillating motor 130 drives the oscillating rotation bracket 150 to rotate, thereby causing the housing to rotate relative to the base.

[0031] The light panel 320 is fixed to the motor bracket 310 and located at the central through hole 231 of the transparent rear mesh support 230. The transparent rear mesh support 230 resembles a vertically placed disc, including a bottom 232 and a wall 233. Several LED beads 321 are arranged around the light panel 320. The entire transparent rear mesh support 230 is polished, allowing light to shine radially outwards. The light is not absorbed when passing the bottom of the disc, and when it hits the inclined surface of the wall 233, it is reflected, changing the light path and illuminating forward. The light passes sequentially through the transparent ring 342 and the transparent front mesh support 440, and is finally evenly diffused by the front mesh lampshade 420, forming a soft halo with a highly decorative effect.

[0032] By cleverly fixing the light panel 320 to the through hole of the transparent support 230 disc in the rear grille, the power supply wire W of the light panel 320 can be connected to the control circuit board through the rear grille bracket. The light of the lampshade 420, which is set around the through hole in the center of the front grille, comes from the illumination of the rear light panel. Therefore, the front lampshade does not need to be connected to a wire. While satisfying the floating visual effect of the fan, it also has a lighting decoration effect, avoiding the destruction of the floating visual effect of the fan by setting a wire in the front.

[0033] like Figure 2 and 4 As shown, the inner ring region of the rear net 220 is provided with multiple rear net guide vanes 222, all of which are arranged around the center of the rear net along a first spiral direction to form a first spiral guide array. The inner ring region of the front net 410 is provided with multiple front net guide vanes 412, all of which are arranged around the center of the front net 410 along a second spiral direction to form a second spiral guide array. The impeller blades 343 are disposed between the first spiral guide array and the second spiral guide array. Wherein, as... Figure 11 As shown, the direction of the first helix is ​​opposite to the direction of the second helix.

[0034] like Figure 10As shown, the impeller blade 343 has an air inlet side 343-1 facing the wind and an air outlet side 343-2 discharging the air; the tangential direction of the air inlet side of the blade is the same as the spiral direction of the rear guide vane at the corresponding position, and the tangential direction of the air outlet side of the blade is opposite to the spiral direction of the front guide vane at the corresponding position.

[0035] like Figure 11 As shown, the rear mesh guide vane 222 is arranged in a first helical direction, and the front mesh guide vane 412 is arranged in a second helical direction opposite to the first helical direction. Figure 10 and Figure 12 As shown, the air inlet direction of the fan blade 343 is the same as the spiral direction of the rear mesh guide vane 222, as... Figure 10 and Figure 13 As shown, the direction of the air outlet edge of the fan blade 343 is opposite to the spiral direction of the front mesh guide vane 412. For example, when viewed from the front of the fan, the blades deflect clockwise from the center outwards, the guide vanes 222 on the rear mesh 220 are arranged in a right-handed spiral, and the guide vanes 412 on the front mesh 410 are arranged in a left-handed spiral.

[0036] In some embodiments, both the rear and front airfoil guide vanes are airfoil structures with windward and leeward surfaces, and the rear and front airfoil guide vanes are arranged in a centrally symmetrical manner with respect to the rotation axis of the impeller.

[0037] The impeller 340 rotates clockwise, and the tangential direction of the air inlet edge 343-1 (tail edge) of its fan blade 343 is basically consistent with the tilt direction of the adjacent rear guide vane 222 (both exhibiting a left-handed rotation). This allows the airflow entering from the rear to be smoothly guided towards the rotating fan blade, reducing intake resistance and increasing airflow. Simultaneously, the tangential direction of the air outlet edge 343-2 (lead edge) of the fan blade 343 is basically opposite to the tilt direction of the adjacent front guide vane 412 (the impeller rotates right-handed for airflow, while the front guide vane exhibits a left-handed rotation, with their directions opposite). This causes the high-speed airflow to interact with the front guide vane, streamlining and accelerating the airflow, effectively increasing the outlet air velocity and concentration.

[0038] The core of this invention lies in the design of a bidirectional spiral guide vane system. Multiple rear-net guide vanes are arranged in the inner ring region of the rear net, forming a first spiral guide array around the center of the rear net in a first spiral direction. Multiple front-net guide vanes are arranged in the inner ring region of the front net, forming a second spiral guide array opposite to the first spiral direction around the center of the front net in a second spiral direction. The impeller blades are positioned between these two guide arrays with opposite spiral directions. The tangential direction of the inlet edge (near the rear net) of the fan blades is the same as the spiral direction of the rear net guide vanes at the corresponding position. This "co-directional guidance" allows the airflow entering from the rear to more smoothly "fit" the direction of the rear net guide vanes and be guided to the rotating fan blade area, reducing intake vortices and resistance, thereby effectively increasing the intake air volume. The tangential direction of the outlet edge (near the front net) of the fan blades is opposite to the spiral direction of the front net guide vanes at the corresponding position. This "reverse shearing" creates a shearing-like interaction between the high-speed ejected airflow and the stationary front mesh guide vanes, which helps to break up large vortices, straighten the airflow direction, and accelerate the airflow a second time, thereby effectively increasing the outlet air speed and delivery distance.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A visually suspended fan with an airflow guiding structure, comprising a fan assembly, a front grille assembly, and a rear grille assembly, the fan assembly including a fan motor and an impeller driven by the fan motor, the front grille assembly and the rear grille assembly collectively surrounding the fan assembly, characterized in that: The rear net assembly includes a rear net and a transparent support member fixed in the central through hole of the rear net. The front net assembly includes a front net and a transparent support member fixed in the central through hole of the front net. The impeller includes fan blades and a transparent ring located inside the fan blades. In the assembled state, the transparent support member of the rear net, the transparent ring of the impeller, and the transparent support member of the front net are arranged sequentially in the front-to-back direction. The inner ring area of ​​the rear net is provided with multiple rear net air guide blades, and all the rear net air guide blades are arranged around the center of the rear net along the first spiral direction to form a first spiral air guide array. The inner ring area of ​​the front net is provided with multiple front net air guide blades, and all the front net air guide blades are arranged around the center of the front net along the second spiral direction to form a second spiral air guide array; Wherein, the first spiral direction is opposite to the second spiral direction; the impeller blades are disposed between the first spiral air guide array and the second spiral air guide array; The impeller blades have an inlet side facing the wind and an outlet side for discharging air; the tangential direction of the inlet side of the blades is the same as the helical direction of the rear guide vanes at the corresponding position, and the tangential direction of the outlet side of the blades is opposite to the helical direction of the front guide vanes at the corresponding position.

2. The visual levitation fan according to claim 1, characterized in that: Both the rear and front air deflectors are airfoil structures with a windward and a leeward side.

3. The visual levitation fan according to claim 1, characterized in that: The rear and front guide vanes are arranged symmetrically with respect to the rotation axis of the impeller.

4. The visual levitation fan according to claim 1, characterized in that: It also includes a lamp plate, which is disposed at the central through hole of the rear mesh transparent support member; the front mesh assembly also includes an annular lampshade, which is disposed around the central through hole of the front mesh; the light emitted by the lamp beads disposed on the lamp plate is directed radially toward the disk wall of the rear mesh transparent support member, and after being reflected by the disk wall, it is directed forward and passes through the transparent ring of the impeller and the front mesh transparent support member in sequence to illuminate the lampshade.

5. The visual levitation fan according to claim 4, characterized in that: The rear mesh transparent support is an integrally polished transparent disc, which includes a disc bottom and a disc wall extending from the disc bottom, and the disc wall is a reflective wall.

6. The visual levitation fan according to any one of claims 1 to 5, characterized in that: It also includes a main unit assembly for supporting the fan, which includes a housing and a battery module, an oscillating motor, and a control circuit board disposed within the housing.

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