Fan with wave-shaped annular fan blades

Abstract

The utility model relates to a fan with wave-shaped ring fan blades, which belongs to the technical field of fan blades and comprises a bottom plate and a top plate, a connecting plate is fixed between opposite sides of the bottom plate and the top plate, a rotating mechanism is arranged in the bottom plate and the top plate, the wave-shaped ring fan blades are arranged on the rotating mechanism, and the wave-shaped ring fan blades are arranged on the connecting plate. A plurality of connecting lug plates are fixed to the side, back to the rotating mechanism, of the connecting plate, and two positioning plates are symmetrically arranged on the side, back to the rotating mechanism, of the connecting plate. According to the fan with the wave-shaped ring fan blades, the rotating mechanisms are arranged on the bottom plate and the top plate, the connecting ring and the wave-shaped ring fan blades can be driven by the rotating shaft to rotate, the wave-shaped ring fan blades and the connecting ring can be conveniently detached by using the first mounting plate and the second mounting plate through bolts in a matched mode, and the wave-shaped ring fan blades are arranged on the rotating mechanisms; when fluid is separated from the wave-shaped ring fan blade, differential flow can be formed under the action of the wave ring, and stacking of high-speed blade frequency is not prone to being caused.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blades, in particular to a fan with wave-shaped annular blades. Background Art

[0002] An electric fan is a household appliance that uses an electric motor to drive the blades to rotate to achieve cooling and air circulation. The electric fan is mainly composed of a fan head, blades, a mesh cover, and a control device. It is widely used in homes, classrooms, offices, shops, hospitals, supermarkets, and hotels. There are many types of electric fans, including floor fans, table fans, air circulation fans, ceiling fans, wall fans, air conditioning fans, and bladeless fans.

[0003] When testing the fan installed in a laptop, problems with different frequency bands often occur. Structural designers usually try to eliminate the problematic frequency, but sometimes it is difficult to directly eliminate this frequency due to other restrictions.

[0004] For example, a Chinese patent (CN204357770U) discloses a fan blade, comprising a base and a plurality of blades arranged around the outer circumference of the base, the blades consisting of a main blade and an auxiliary blade, an adjustment cavity for the auxiliary blade to slide is arranged along the length direction of the main blade, an adjustment port for the auxiliary blade to extend out is arranged at the other end of the adjustment cavity relative to the base, a length locking mechanism for locking after the main blade and the auxiliary blade are adjusted is arranged between the auxiliary blade and the adjustment cavity, the main blade is rotatably arranged on the outer circumference of the base and a rotation locking mechanism is arranged between the main blade and the base, and the above scheme is adopted to provide a fan blade with adjustable fan blade length and an inclination angle between the blade and the base.

[0005] The above scheme also has the following technical deficiencies. The above scheme is easy to maintain the same frequency and high speed when the fluid separates from the fan blades. Sound quality problems are very likely to occur during the separation process of the fluid. The noise generated in this process will affect the user's use of the fan blades. In order to reduce the noise, the user has to reduce the rotation speed of the fan blades or endure the noise in order to maintain the rotation speed of the fan blades. Based on this, a fan with corrugated ring fan blades is proposed. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a fan with corrugated ring blades, which has the advantages of enabling the fluid to form a differential flow when it leaves the corrugated ring blades, not easily causing stacking of high-speed blade frequencies, reducing noise, etc., and solving the problem that the fluid is prone to generate noise when it leaves the blades.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan with corrugated ring blades, comprising a bottom plate and a top plate, a connecting plate is fixed between opposite sides of the bottom plate and the top plate, a rotating mechanism is arranged inside the bottom plate and the top plate, and the corrugated ring blades are arranged on the rotating mechanism, a plurality of connecting ear plates are fixed on the side of the connecting plate facing away from the rotating mechanism, and two positioning plates are symmetrically arranged on the side of the connecting plate facing away from the rotating mechanism;

[0008] The rotating mechanism includes a rotating shaft rotatably connected to the inside of the top plate, a plurality of support rods are fixed to the outer surface of the rotating shaft, a first mounting plate is fixed to the end of the support rod away from the rotating shaft, a second mounting plate is abutted against the bottom side of the first mounting plate, a plurality of second mounting plates are fixed to a side away from the rotating rod, and bolts are connected to the internal threads of the second mounting plates.

[0009] Furthermore, a plurality of ventilation holes are provided inside the top plate, and the positions of the ventilation holes correspond to the positions of the corrugated ring fan blades.

[0010] Furthermore, a bearing seat is fixed to one side of the bottom plate close to the top plate, and the rotating shaft rotates in the bearing seat.

[0011] Furthermore, a through hole is provided inside the first mounting plate, and the plurality of bolts are located in the corresponding through holes.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The fan with corrugated ring blades is provided with a rotating mechanism on the bottom plate and the top plate, and can use the rotating shaft to drive the connecting ring and the corrugated ring blades to rotate. The first mounting plate and the second mounting plate bolts are used together to facilitate the removal of the corrugated ring blades and the connecting ring. By providing corrugated ring blades on the rotating mechanism, a differential flow can be formed under the action of the corrugated ring when the fluid leaves the corrugated ring blades, which is not easy to cause the stacking of high-speed blade frequencies, thereby reducing the noise generated by the corrugated ring blades when rotating, and can increase the wind pressure and air volume under the same noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional structural schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a top view structural diagram of the rotating mechanism of the utility model;

[0016] Figure 3 This is a schematic diagram of the appearance of the three-dimensional structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the corrugated ring fan blade of the utility model.

[0018] In the figure: 1 bottom plate, 2 top plate, 3 connecting plate, 400 rotating mechanism, 401 rotating shaft, 402 supporting rod, 403 first mounting plate, 404 second mounting plate, 405 connecting ring, 406 bolt, 5 corrugated ring fan blade, 6 connecting ear plate, 7 positioning plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4 In this embodiment, a fan with corrugated ring blades comprises a bottom plate 1 and a top plate 2, a connecting plate 3 is fixed between opposite sides of the bottom plate 1 and the top plate 2, a rotating mechanism 400 is arranged inside the bottom plate 1 and the top plate 2, a corrugated ring blade 5 is arranged on the rotating mechanism 400, a plurality of vents are opened inside the top plate 2, the positions of the vents correspond to the positions of the corrugated ring blades 5, the corrugated rings in the corrugated ring blades 5 may be concentric rings or non-concentric rings, may be sine waves, square waves and other irregular waveforms, the waveform of the corrugated ring blades 5 may be an amplitude wave along the Z axis, an amplitude wave along the X axis or an amplitude wave along the Y axis, or may be a multi-axis amplitude wave, a plurality of connecting ear plates 6 are fixed on the side of the connecting plate 3 facing away from the rotating mechanism 400, and two positioning plates 7 are symmetrically arranged on the side of the connecting plate 3 facing away from the rotating mechanism 400.

[0021] The rotating mechanism 400 in this embodiment is used to drive the corrugated ring fan blades 5 to rotate. The corrugated ring fan blades 5 are used to enable the fluid to form a differential flow when it leaves the corrugated ring fan blades 5. The connecting ear plate 6 is used to facilitate the fixation of the base plate 1 with other components. The positioning plate 7 is used to pre-position the two when the base plate 1 is fixed with other components.

[0022] It should be noted that the corrugated ring blade 5 can effectively reduce the energy of the high-energy frequency to achieve the effect of improving noise by introducing other frequency segments to disrupt the natural frequency. At the same time, it can improve the uneven distribution of the air outlet through upper and lower spoilers. The motor that drives the rotating mechanism 400 to rotate is a relatively mature technology in the existing technology, so it is not shown in the figure.

[0023] See also Figure 1 and Figure 2In order to facilitate the rotation of the corrugated ring fan blades 5, the rotating mechanism 400 in this embodiment includes a rotating shaft 401 rotatably connected to the inside of the top plate 2, a bearing seat is fixed to the side of the bottom plate 1 close to the top plate 2, the rotating shaft 401 rotates in the bearing seat, and a plurality of support rods 402 are fixed to the outer surface of the rotating shaft 401, and a first mounting plate 403 is fixed to the end of the support rod 402 away from the rotating shaft 401, and a second mounting plate 404 is abutted against the bottom side of the first mounting plate 403, and a plurality of second mounting plates 404 are fixed to a side away from the rotating rod with a connecting ring 405, and the internal thread of the second mounting plate 404 is connected with a bolt 406, and a through hole is opened inside the first mounting plate 403, and a plurality of bolts 406 are located in the corresponding through holes.

[0024] The rotating mechanism 400 in this embodiment can drive the support rod 402 to rotate through the rotating shaft 401, and the support rod 402 is used to drive the first mounting plate 403 and the second mounting plate 404 to rotate. The second mounting plate 404 can drive the connecting ring 405 and the corrugated ring fan blades 5 to rotate. The bolt 406 can fix the first mounting plate 403 and the second mounting plate 404 together by being threadedly connected with the second mounting plate 404, and it is also convenient to disassemble the second mounting plate 404 and the corrugated ring fan blades 5.

[0025] It should be noted that the bearing seat is used to support the rotating shaft 401 and facilitate its rotation.

[0026] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.

[0027] The working principle of the above embodiment is:

[0028] When the corrugated ring fan blades 5 are needed, the motor is started, and the motor drives the rotating shaft 401 to rotate, the rotating shaft 401 drives the support rod 402 to rotate, the support rod 402 drives the first mounting plate 403 to rotate together, the first mounting plate 403 drives the second mounting plate 404 to rotate, and the second mounting plate 404 drives the connecting ring 405 and the corrugated ring fan blades 5 to rotate. When the fluid separates from the corrugated ring fan blades 5, a flow velocity difference can be formed, so that the corrugated ring fan blades 5 are not easy to cause high-speed blade stacking, thereby reducing the noise during the use of the corrugated ring fan blades 5.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fan with corrugated annular blades, comprising a bottom plate (1) and a top plate (2), characterized in that: A connecting plate (3) is fixed between opposite sides of the bottom plate (1) and the top plate (2); a rotating mechanism (400) is provided inside the bottom plate (1) and the top plate (2); a corrugated ring fan blade (5) is provided on the rotating mechanism (400); a plurality of connecting ear plates (6) are fixed on a side of the connecting plate (3) facing away from the rotating mechanism (400); and two positioning plates (7) are symmetrically provided on a side of the connecting plate (3) facing away from the rotating mechanism (400); The rotating mechanism (400) comprises a rotating shaft (401) rotatably connected to the inside of the top plate (2); a plurality of support rods (402) are fixed to the outer surface of the rotating shaft (401); a first mounting plate (403) is fixed to one end of the support rod (402) away from the rotating shaft (401); a second mounting plate (404) is abutted against the bottom side of the first mounting plate (403); a connecting ring (405) is fixed to one side of the plurality of second mounting plates (404) away from the rotating rod; and a bolt (406) is connected to the internal thread of the second mounting plate (404).

2. A fan with corrugated ring blades according to claim 1, characterized in that: A plurality of ventilation openings are provided inside the top plate (2), and the positions of the ventilation openings correspond to the positions of the corrugated ring blades (5).

3. A fan with corrugated ring blades according to claim 1, characterized in that: A bearing seat is fixed to one side of the bottom plate (1) close to the top plate (2), and the rotating shaft (401) rotates in the bearing seat.

4. A fan with corrugated ring blades according to claim 1, characterized in that: A through hole is provided inside the first mounting plate (403), and a plurality of bolts (406) are located in corresponding through holes.

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