CN111379740A - Bladeless Fan Base and Bladeless Fan - Google Patents

Abstract

The invention relates to the technical field of household appliances, in particular to a bladeless fan base and a bladeless fan. The bladeless fan base includes a casing, an air inlet and an air outlet are formed on the casing, and an air flow channel connecting the air inlet and the air outlet is characterized in that, the bladeless fan base also includes a muffler component arranged in the air flow channel , the muffler component is formed with a muffler cavity communicating with the air flow channel, and the muffler component muffles the air passing through the air flow channel through the muffler cavity. The bladeless fan base is equipped with a noise reduction component in the air flow channel, and the noise reduction cavity formed by the noise reduction component and communicated with the air flow channel can reduce the noise of the air in the air flow channel, thereby reducing the noise of the bladeless fan during operation and improving the performance. user experience.

Description

Bladeless Fan Base and Bladeless Fan

technical field

The invention relates to the technical field of household appliances, in particular to a bladeless fan base and a bladeless fan.

Background technique

The existing bladeless fans are favored by the market because of their unique shape and advanced technology. The base of the existing bladeless fan includes a power system and a base shell, and the power system sucks in the air entering from the base shell at high speed, and then sends the air into the nozzle assembly and blows it out.

In the actual working process of the bladeless fan, due to the different design of the air intake structure, the air volume of the bladeless fan is different, which makes the power system of the bladeless fan generate a lot of noise during operation, and the noise can pass through the air inlet. Diffusion outwards, resulting in louder noise from the bladeless fan. At the same time, the motor is built in the casing of the wind wheel, which is not conducive to the heat dissipation of the power system.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a bladeless fan base and a bladeless fan, so as to solve the problem of excessive noise during operation of the bladeless fan in the prior art.

In order to achieve the above object, the present invention provides a bladeless fan base, which cooperates with the nozzle assembly of the bladeless fan to supply air to the bladeless fan, and the bladeless fan base comprises: a casing; The housing is formed with an air inlet and an air outlet, and an air flow channel that communicates the air inlet and the air outlet. A muffler cavity is formed in communication with the air flow passage, and the muffler component muffles the air noise in the air flow passage through the muffler cavity.

Further, the sound-absorbing assembly includes an upper cover plate and a lower cover plate that enclose the sound-absorbing cavity, and a plurality of sound-absorbing blades disposed between the upper cover plate and the lower cover plate.

Further, a plurality of the sound-absorbing vanes are arranged at intervals in the circumferential direction of the upper cover plate and/or the lower cover plate, and the tangent at the intersection of each of the sound-absorbing vanes and the circumference and the tangent line of the sound-absorbing vane are arranged at intervals. The angle α is between 30 and 50 degrees.

Further, the central angle β of the two adjacent muffler blades in the circumferential direction is between 15 degrees and 30 degrees.

Further, the thickness D of the muffler blade is between 0.5mm-3.5mm.

Further, the muffler blade is in the shape of a trapezoid with a narrow upper and a lower width in the height direction of the muffler assembly.

Further, the muffler assembly further includes a conducting hole provided on the muffler cavity and communicating with the air flow channel and the inside of the muffler cavity.

Further, the through hole is provided on the upper cover plate.

Further, the through hole is a circular hole, and the diameter of the through hole is between 3-6 mm.

Further, the muffler assembly further includes a heat dissipation hole provided at the bottom of the lower cover plate.

Further, the heat dissipation hole is circular, and the size of the heat dissipation hole is between 5-20 mm.

Further, the base further includes a bottom plate disposed at the bottom of the sound-absorbing assembly, and the sound-absorbing assembly is mounted on the bottom plate through a snap structure.

Further, the muffler assembly further includes a collecting cover arranged in the muffler cavity.

Further, the bladeless fan base further includes an impeller assembly disposed in the airflow channel, and the impeller assembly includes a base carrying an impeller, and a motor for driving the impeller to rotate.

The present invention also provides a bladeless fan, comprising the bladeless fan base as described above.

The technical scheme of the present invention has the following advantages:

1. In the bladeless fan base and the bladeless fan provided by the present invention, the bladeless fan base is provided with a muffler assembly in the air flow channel, and the muffler cavity formed by the muffler assembly and communicated with the air flow passage is effective against the air noise in the air flow passage. Noise reduction and noise reduction are carried out, thereby reducing the noise of the bladeless fan during operation and improving the user experience.

2. In the bladeless fan base and the bladeless fan provided by the present invention, the muffler assembly includes an upper cover plate and a lower cover plate that form a muffler cavity, and a number of muffler blades arranged between the upper cover plate and the lower cover plate, The muffler component mainly realizes noise reduction through the muffler blade, which has a good noise reduction effect.

3. In the bladeless fan base and the bladeless fan provided by the present invention, the muffler blades are in the shape of a trapezoid with a narrow upper and a lower width in the height direction of the muffler assembly, and the cross-sectional area of the passage between adjacent muffler blades is smaller than that of the muffler cavity. , it is difficult for the noise generated by the power system to propagate from the muffler cavity with a large cross-sectional area to the channel between the adjacent muffler blades with a small cross-sectional area, and the sound is reflected back and forth inside the muffler cavity, which further reduces the bladeless noise. Noise when the fan is working.

4. In the bladeless fan base and the bladeless fan provided by the present invention, the muffler assembly further includes a conducting hole provided on the muffler cavity, connecting the airflow channel and the interior of the muffler cavity, and the through hole increases the air intake of the muffler assembly. area, which improves the noise reduction effect of the muffler component.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts. In the attached image:

FIG. 1 is a schematic three-dimensional structural diagram of a bladeless fan according to an embodiment of the present invention.

FIG. 2 is a schematic three-dimensional structural diagram of the base of the bladeless fan shown in FIG. 1 .

FIG. 3 is a schematic cross-sectional structural diagram of the base shown in FIG. 2 .

FIG. 4 is a schematic three-dimensional structural diagram of the muffler assembly in the base shown in FIG. 3 .

FIG. 5 is another three-dimensional structural schematic diagram of the muffler assembly in the base shown in FIG. 3 .

FIG. 6 is a schematic cross-sectional structural diagram of the muffler assembly in the base shown in FIG. 3 .

FIG. 7 is a schematic three-dimensional structural diagram of the muffler blade in the muffler assembly shown in FIG. 4 .

FIG. 8 is a schematic three-dimensional structural diagram of the bottom plate in the base shown in FIG. 3 .

Wherein, the reference signs in the above drawings are:

1. Bladeless fan;

11. Fan head; 111. Nozzle;

12, base; 121, air inlet; 242, air outlet; 24, base bearing impeller; 23, motor; 25a, air passage; 122, housing; 20, power system;

26. Muffler assembly; 2611, conduction hole; 262, collecting cover; 263, muffler blade; 261, upper cover plate; 264, lower cover plate; 2642, buckle structure; 27, bottom plate; 271, card slot; 2641 ,Vents.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

As shown in FIGS. 1 to 3 , according to the bladeless fan base in this embodiment, it cooperates with the nozzle assembly of the bladeless fan 1 to supply air to the bladeless fan 1 . The nozzle assembly includes a fan head 11 and a Nozzle 111 on head 11. The bladeless fan base includes: a casing 122, an air inlet 121 and an air outlet 242 are formed on the casing 122, and an airflow channel 25a that communicates the air inlet 121 and the air outlet 242, and the bladeless fan base also includes a setting in the airflow channel 25a The muffler assembly 26 is formed with a muffler cavity communicating with the airflow channel 25a, and the muffler assembly 26 muffles the air noise in the airflow channel 25a through the muffler cavity, and then the bladeless fan base 12 in this embodiment passes through the A muffler assembly 26 is arranged in the air flow passage 25a, and the muffler cavity formed by the muffler assembly 26 and communicated with the air flow passage 25a performs noise reduction and muffling on the air noise in the air flow passage 25a, thereby reducing the noise of the bladeless fan 1 during operation, and improving the user experience.

As shown in FIG. 4 and FIG. 5 , the muffler assembly 26 in this embodiment includes an upper cover plate 261 and a lower cover plate 264 that enclose a muffler cavity, and a plurality of mufflers arranged between the upper cover plate 261 and the lower cover plate 264 The blade 263, the noise reduction component 26 in this embodiment mainly realizes noise reduction through the noise reduction blade 263, and has a good noise reduction effect.

As shown in FIG. 6 , the plurality of sound-absorbing vanes 263 in this embodiment are arranged at intervals on the upper cover plate 261 and/or the lower cover plate 264 in the circumferential direction, and the tangent line at the intersection of each sound-absorbing vane 263 and the circumference corresponds to the sound-absorbing vane The angle α between the 263 is between 30 degrees and 50 degrees, and the central angle β of the two adjacent muffler blades 263 in the circumferential direction is between 15 degrees and 30 degrees. Furthermore, when the bladeless fan 1 is in operation, the sound-absorbing blades 263 have a better sound-absorbing effect.

The thickness D of the muffler blade 263 in this embodiment is between 0.5mm-3.5mm, preferably 1mm, which ensures that the muffler blade 263 has a better muffler effect and reduces the manufacturing cost of the muffler blade 263 .

As shown in FIG. 7 , in the height direction of the muffler assembly 26, the muffler blades 263 in the present embodiment have a trapezoid shape that is narrow at the top and wide at the bottom. As seen in FIG. 7, the chord length L1 is smaller than the chord length L2, so that the adjacent muffler blades 263 The cross-sectional area of the channel between them is smaller than the cross-sectional area of the muffler cavity, so it is difficult for the noise generated by the power system 20 to propagate from the muffler cavity with a large cross-sectional area to the channel between the adjacent muffler blades 263 with a small cross-sectional area. The back and forth inside the cavity is consumed by reflection, which further reduces the noise of the bladeless fan 1 when it is working.

Referring further to FIG. 5 , the muffler assembly 26 in this embodiment also includes a through hole 2611 provided on the muffler cavity, connecting the airflow channel 25a and the interior of the muffler cavity, and the through hole 2611 increases the air intake area of the muffler assembly 26 , The noise reduction effect of the muffler assembly 26 is improved.

Specifically, the through hole 2611 is provided on the upper cover plate 261 . The via hole 2611 is a circular hole, and the diameter of the via hole 2611 is between 3-6 mm, which ensures better balance between the conduction effect and the noise reduction effect of the via hole 2611 .

Further referring to FIG. 5 , the muffler assembly 26 further includes a heat dissipation hole 2641 provided at the bottom of the lower cover plate 264 . The heat dissipation hole 2641 is circular, and the size of the heat dissipation hole 2641 is between 5-20 mm, which can timely discharge the heat generated by the power system 20 .

As shown in FIG. 8 , the base 12 further includes a bottom plate 27 disposed at the bottom of the muffler assembly 26 , and the muffler assembly 26 is mounted on the card slot 271 of the bottom plate 27 through a buckle structure 2642 . The muffler assembly 26 also includes a collector hood 262 arranged in the muffler cavity. The collector hood 262 presents an annular shape with a narrow upper and a lower width from top to bottom. After the airflow enters the power system 20, the deflector and the collecting hood 262 can increase the air volume, and the sound-absorbing blades 263 can reduce the noise.

The lower cover plate 264 of this embodiment is an arc surface with increasing slope, and the middle part is a concave arc surface. The air flow is guided into the upper part and enters the collecting cover 262 along the arc surface, which further increases the air volume.

The bladeless fan base also includes an impeller assembly arranged in the airflow channel 25a. The impeller assembly includes a base bearing impeller 24 and a motor 23 that drives the impeller to rotate. Driven by the motor 23, the air inlet 121 to the air outlet is formed. 242 flows through the airflow channel 25a.

This embodiment also provides a bladeless fan, including a bladeless fan base, and the bladeless fan base is the above-mentioned bladeless fan base. Furthermore, the advantages of the bladeless fan base should also be provided by the bladeless fan in this embodiment, which will not be repeated here.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (15)

1. A bladeless fan base for cooperating with a nozzle assembly of the bladeless fan to provide air to the bladeless fan, the bladeless fan base comprising: a housing (122), said housing (122) having an air inlet (121) and an air outlet (242) formed thereon, and an air flow passage (25a) communicating said air inlet (121) with said air outlet (242), characterized in that said bladeless fan base further comprises a noise reduction assembly (26) disposed in said air flow passage (25a), said noise reduction assembly (26) having a noise reduction cavity formed therein communicating with said air flow passage (25a), said noise reduction assembly (26) reducing air noise in said air flow passage (25a) through said noise reduction cavity.

2. The bladeless fan base of claim 1, wherein the sound attenuating assembly (26) comprises an upper cover plate (261) and a lower cover plate (264) enclosing the sound attenuating cavity, and a plurality of sound attenuating blades (263) disposed between the upper cover plate (261) and the lower cover plate (264).

3. The bladeless fan base according to claim 2, wherein a plurality of the noise reduction blades (263) are circumferentially spaced on the upper cover plate (261) and/or the lower cover plate (264), and an angle α between a tangent line of each of the noise reduction blades (263) where the noise reduction blades (263) intersect with the circumference and a tangent line of the noise reduction blade (263) is between 30 degrees and 50 degrees.

4. The bladeless fan base according to claim 3, wherein a central angle β of adjacent two of the sound-deadening blades (263) in the circumferential direction is between 15 degrees and 30 degrees.

5. The bladeless fan base according to claim 2, wherein the thickness D of the sound-attenuating blades (263) is between 0.5mm-3.5 mm.

6. The bladeless fan base according to claim 2, wherein the noise reduction blades (263) have a trapezoidal shape with a narrow top and a wide bottom in a height direction of the noise reduction member (26).

7. The bladeless fan base according to any one of claims 1-6, wherein the sound-deadening assembly (26) further comprises a through-hole (2611) provided in the sound-deadening chamber to communicate the air flow passage (25a) with an interior of the sound-deadening chamber.

8. The bladeless fan base according to claim 7, wherein the through hole (2611) is provided on the upper cover plate (261).

9. The bladeless fan base according to claim 7, wherein the through hole (2611) is a circular hole, and the diameter of the through hole (2611) is between 3-6 mm.

10. The bladeless fan base according to any one of claims 2-6, wherein the noise reduction assembly (26) further comprises a heat dissipation hole (2641) provided at a bottom of the lower cover plate (264).

11. The bladeless fan base of claim 10, wherein the heat dissipation aperture (2641) is circular, the heat dissipation aperture (2641) having a size of between 5-20 mm.

12. The bladeless fan base according to any one of claims 1-6, further comprising a bottom plate (27) provided at a bottom of the noise dampening assembly (26), the noise dampening assembly (26) being mounted on the bottom plate (27) by a snap-fit structure (2642).

13. The bladeless fan base of any one of claims 1-6, wherein the sound attenuation assembly (26) further comprises a flow collection hood (262) disposed in the sound attenuation chamber.

14. The bladeless fan base according to any one of claims 1-6, further comprising an impeller assembly disposed in the airflow channel (25a), the impeller assembly comprising a base-carrying impeller (24), and a motor (23) driving the impeller in rotation.

15. A bladeless fan comprising a bladeless fan base, wherein the bladeless fan base is according to any one of claims 1 to 14.

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