Leafless fan base and leafless fan

Abstract

The present invention relates to the technical field of household appliances, and particularly relates to a bladeless fan base and a bladeless fan. The bladeless fan base includes a housing, on which an air inlet, an air outlet, and an air flow channel connecting the air inlet and the air outlet are formed. It is characterized in that the bladeless fan base further includes a sound-absorbing component disposed in the air flow channel. The sound-absorbing component is formed with a sound-absorbing cavity communicating with the air flow channel, and the sound-absorbing component silences the air passing through the air flow channel through the sound-absorbing cavity. By arranging the sound-absorbing component in the air flow channel, the bladeless fan base reduces the noise of the air in the air flow channel through the sound-absorbing cavity formed by the sound-absorbing component, thereby reducing the noise during the operation of the bladeless fan and improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly relates to a bladeless fan base and a bladeless fan. Background Art

[0002] Existing bladeless fans are highly favored by the market due to their unique shapes and advanced technologies. The base of an existing bladeless fan includes a power system and a base housing. When the power system operates at high speed, it sucks in air entering from the base housing and then sends the air into a nozzle assembly for blowing out.

[0003] During the actual operation of the bladeless fan, due to different designs of the air intake structure, there are differences in the air volume of the bladeless fan, resulting in a relatively large noise generated by the power system of the bladeless fan during operation. The emitted noise can spread outward through the air intake, leading to a relatively large noise of the bladeless fan. At the same time, the motor is built inside the wind wheel housing, which is not conducive to the heat dissipation of the power system. Summary of the Invention

[0004] The main purpose of the present invention is to provide a bladeless fan base and a bladeless fan to solve the problem of excessive noise during the operation of the existing bladeless fan.

[0005] To achieve the above object, the present invention provides a bladeless fan base that cooperates with the nozzle assembly of the bladeless fan to supply air to the bladeless fan. The bladeless fan base includes: a housing, an air inlet and an air outlet are formed on the housing, and an air flow channel connecting the air inlet and the air outlet. The bladeless fan base further includes a sound-absorbing component disposed in the air flow channel. The sound-absorbing component is formed with a sound-absorbing cavity communicating with the air flow channel, and the sound-absorbing component silences the air noise in the air flow channel through the sound-absorbing cavity.

[0006] Further, the sound-absorbing component includes an upper cover plate and a lower cover plate enclosing the sound-absorbing cavity, and a plurality of sound-absorbing blades disposed between the upper cover plate and the lower cover plate.

[0007] Further, a plurality of the sound-absorbing blades are circumferentially spaced on the upper cover plate and / or the lower cover plate, and the angle α between the tangent of the intersection of each sound-absorbing blade and the circumference and the tangent of the sound-absorbing blade is between 30 degrees and 50 degrees.

[0008] Further, the central angle β between two adjacent sound-absorbing blades in the circumferential direction is between 15 degrees and 30 degrees.

[0009] Further, the thickness D of the sound-absorbing blade is between 0.5 mm and 3.5 mm.

[0010] Further, the sound-absorbing blades are trapezoidal in shape with a narrower upper part and a wider lower part in the height direction of the sound-absorbing component.

[0011] Further, the sound-absorbing component further includes a through hole provided on the sound-absorbing cavity and communicating the air flow channel with the interior of the sound-absorbing cavity.

[0012] Further, the through hole is provided on the upper cover plate.

[0013] Further, the through hole is a circular hole, and the diameter of the through hole is between 3 and 6 mm.

[0014] Further, the sound-absorbing component further includes heat dissipation holes provided at the bottom of the lower cover plate.

[0015] Further, the heat dissipation holes are circular, and the size of the heat dissipation holes is between 5 and 20 mm.

[0016] Further, the base further includes a bottom plate provided at the bottom of the sound-absorbing component, and the sound-absorbing component is installed on the bottom plate through a snap structure.

[0017] Further, the sound-absorbing component further includes a flow collector provided in the sound-absorbing cavity.

[0018] Further, the bladeless fan base further includes an impeller assembly provided in the air flow channel. The impeller assembly includes a base for carrying the impeller and a motor for driving the impeller to rotate.

[0019] The present invention also provides a bladeless fan, including the above-mentioned bladeless fan base.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. In the bladeless fan base and the bladeless fan provided by the present invention, the bladeless fan base is provided with a sound-absorbing component in the air flow channel. The sound-absorbing cavity formed by the sound-absorbing component and communicating with the air flow channel reduces the air noise in the air flow channel, thereby reducing the noise during the operation of the bladeless fan and improving the user experience.

[0022] 2. In the bladeless fan base and the bladeless fan provided by the present invention, the sound-absorbing component includes an upper cover plate and a lower cover plate enclosing the sound-absorbing cavity, and a plurality of sound-absorbing blades provided between the upper cover plate and the lower cover plate. The sound-absorbing component mainly reduces the noise through the sound-absorbing blades, and has a good noise reduction effect.

[0023] 3. In the bladeless fan base and the bladeless fan provided by the present invention, the sound-absorbing blades are trapezoidal in shape with a narrower upper part and a wider lower part in the height direction of the sound-absorbing component. The cross-sectional area of the channel between adjacent sound-absorbing blades is smaller than the cross-sectional area of the sound-absorbing cavity. When the power system operates, the noise generated is difficult to spread from the sound-absorbing cavity with a larger cross-sectional area to the channel between adjacent sound-absorbing blades with a smaller cross-sectional area. At the same time, the sound is reflected back and forth inside the sound-absorbing cavity and consumed, thereby further reducing the noise generated when the bladeless fan operates.

[0024] 4. In the bladeless fan base and the bladeless fan provided by the present invention, the sound-absorbing component further includes a through hole provided on the sound-absorbing cavity and communicating the air flow channel with the inside of the sound-absorbing cavity. The through hole increases the air intake area of the sound-absorbing component and improves the noise reduction effect of the sound-absorbing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the bladeless fan in the embodiment of the present invention.

[0027] Figure 2 is Figure 1 a three-dimensional structural schematic diagram of the base in the shown bladeless fan.

[0028] Figure 3 is Figure 2 a sectional structural schematic diagram of the shown base.

[0029] Figure 4 is Figure 3 a three-dimensional structural schematic diagram of the sound-absorbing component in the shown base.

[0030] Figure 5 is Figure 3 another three-dimensional structural schematic diagram of the sound-absorbing component in the shown base.

[0031] Figure 6 is Figure 3 a sectional structural schematic diagram of the sound-absorbing component in the shown base.

[0032] Figure 7 is Figure 4 a three-dimensional structural schematic diagram of the sound-absorbing blade in the shown sound-absorbing component.

[0033] Figure 8 is Figure 3 a three-dimensional structural schematic diagram of the bottom plate in the shown base.

[0034] Among them, the reference numerals in the above-mentioned drawings are as follows:

[0035] 1. bladeless fan;

[0036] 11. fan head; 111. nozzle;

[0037] 12. base; 121. air inlet; 242. air outlet; 24. base bearing impeller; 23. motor; 25a. air flow channel; 122. housing; 20. power system;

[0038] 26. sound-absorbing component; 2611. through hole; 262. air collecting cover; 263. sound-absorbing blade; 261. upper cover plate; 264. lower cover plate; 2642. buckle structure; 27. bottom plate; 271. card slot; 2641. heat dissipation hole. Detailed implementation manners

[0039] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] Such as Figures 1 to 3As shown, the bladeless fan base in this embodiment 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 provided on the fan head 11. The bladeless fan base includes: a housing 122, an air inlet 121 and an air outlet 242 are formed on the housing 122, and an air flow channel 25a communicating the air inlet 121 and the air outlet 242. The bladeless fan base further includes a sound-absorbing component 26 provided in the air flow channel 25a. The sound-absorbing component 26 is formed with a sound-absorbing cavity communicating with the air flow channel 25a. The sound-absorbing component 26 absorbs the air noise in the air flow channel 25a through the sound-absorbing cavity. Thus, the bladeless fan base 12 in this embodiment reduces the air noise in the air flow channel 25a by providing the sound-absorbing component 26 in the air flow channel 25a, and the sound-absorbing cavity formed by the sound-absorbing component 26 reduces the air noise in the air flow channel 25a, thereby reducing the noise generated when the bladeless fan 1 operates and improving the user experience.

[0042] As Figure 4 and Figure 5 shown, the sound-absorbing component 26 in this embodiment includes an upper cover plate 261 and a lower cover plate 264 that enclose the sound-absorbing cavity, and a plurality of sound-absorbing vanes 263 provided between the upper cover plate 261 and the lower cover plate 264. The sound-absorbing component 26 in this embodiment mainly reduces noise through the sound-absorbing vanes 263 and has a good noise reduction effect.

[0043] As Figure 6 shown, the plurality of sound-absorbing vanes 263 in this embodiment are circumferentially spaced on the upper cover plate 261 and / or the lower cover plate 264. The angle α between the tangent of the intersection of each sound-absorbing vane 263 and the circumference and the sound-absorbing vane 263 is between 30 degrees and 50 degrees, and the central angle β between two adjacent sound-absorbing vanes 263 in the circumferential direction is between 15 degrees and 30 degrees. Thus, when the bladeless fan 1 operates, the sound-absorbing vanes 263 have a better sound-absorbing effect.

[0044] The thickness D of the sound-absorbing vanes 263 in this embodiment is between 0.5 mm and 3.5 mm, preferably 1 mm, which ensures that the sound-absorbing vanes 263 have a better sound-absorbing effect and reduces the manufacturing cost of the sound-absorbing vanes 263.

[0045] As Figure 7 shown, the sound-absorbing vanes 263 in this embodiment are trapezoidal with a narrower upper part and a wider lower part in the height direction of the sound-absorbing component 26. From Figure 7 this perspective, that is, the chord length L1 is less than the chord length L2. In this way, the cross-sectional area of the channel between adjacent sound-absorbing vanes 263 is smaller than the cross-sectional area of the sound-absorbing cavity. The noise generated when the power system 20 operates is difficult to propagate from the sound-absorbing cavity with a large cross-sectional area to the channel between adjacent sound-absorbing vanes 263 with a small cross-sectional area. At the same time, the sound is reflected back and forth inside the sound-absorbing cavity and consumed, thereby further reducing the noise generated when the bladeless fan 1 operates.

[0046] Further refer to Figure 5 In this embodiment, the sound-absorbing component 26 further includes a through hole 2611 provided on the sound-absorbing cavity and communicating the air flow channel 25a with the inside of the sound-absorbing cavity. The through hole 2611 increases the air intake area of the sound-absorbing component 26 and improves the noise reduction effect of the sound-absorbing component 26.

[0047] Specifically, the through hole 2611 is provided on the upper cover plate 261. The through hole 2611 is a circular hole, and the diameter of the through hole 2611 is between 3 and 6 mm, ensuring better balance between the conduction effect and the noise reduction effect of the through hole 2611.

[0048] Further refer to Figure 5 In this embodiment, the sound-absorbing component 26 further includes heat dissipation holes 2641 provided at the bottom of the lower cover plate 264. The heat dissipation holes 2641 are circular, and the size of the heat dissipation holes 2641 is between 5 and 20 mm, which can timely discharge the heat generated by the power system 20.

[0049] As Figure 8 shown, the base 12 further includes a bottom plate 27 provided at the bottom of the sound-absorbing component 26. The sound-absorbing component 26 is installed on the card slot 271 of the bottom plate 27 through a snap structure 2642. The sound-absorbing component 26 further includes a flow collector 262 provided in the sound-absorbing cavity. The flow collector 262 is in the shape of a circular ring that is narrow at the top and wide at the bottom from top to bottom. The air flow converges from the wide part below to the narrow part above, playing a role of collecting and guiding the air flow. Then the air flow enters the power system 20. The flow guiding plate and the flow collector 262 can increase the air volume, and the sound-absorbing blades 263 can reduce noise.

[0050] The lower cover plate 264 of this embodiment is an arc surface with an increasing slope, and the middle part is a concave arc surface. The air flow is guided into the upper part and enters the flow collector 262 along the arc surface, further improving the air volume.

[0051] The bladeless fan base further includes an impeller assembly provided in the air flow channel 25a. The impeller assembly includes a base-mounted impeller 24 and a motor 23 that drives the impeller to rotate. Driven by the motor 23, an air flow channel 25a is formed that flows from the air inlet 121 to the air outlet 242.

[0052] This embodiment also provides a bladeless fan, including a bladeless fan base, and the bladeless fan base is the bladeless fan base as described above. Furthermore, the advantages of the bladeless fan base should also be possessed by the bladeless fan in this embodiment, which will not be elaborated here.

[0053] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A bladeless fan base is configured to cooperate with a nozzle assembly of the bladeless fan to supply air to the bladeless fan. The bladeless fan base comprises: A housing (122) having an air inlet (121) and an air outlet (242) formed thereon, and an air flow passage (25a) connecting the air inlet (121) and the air outlet (242). It is characterized in that the bladeless fan base further includes a sound-absorbing component (26) disposed in the air flow passage (25a). The sound-absorbing component (26) has a sound-absorbing cavity communicating with the air flow passage (25a), and the sound-absorbing component (26) absorbs the air noise in the air flow passage (25a) through the sound-absorbing cavity; The sound-absorbing component (26) includes an upper cover plate (261) and a lower cover plate (264) enclosing the sound-absorbing cavity, and a plurality of sound-absorbing vanes (263) disposed between the upper cover plate (261) and the lower cover plate (264); The sound-absorbing component (26) further includes a through hole (2611) provided on the sound-absorbing cavity and communicating the air flow passage (25a) with the interior of the sound-absorbing cavity; The through hole (2611) is provided on the upper cover plate (261).

2. The bladeless fan base according to claim 1, characterized in that A plurality of the sound-absorbing vanes (263) are spaced apart in the circumferential direction on the upper cover plate (261) and / or the lower cover plate (264), and the angle α between the tangent of each sound-absorbing vane (263) at the intersection with the circumference and the tangent of the sound-absorbing vane (263) is between 30 degrees and 50 degrees.

3. The bladeless fan base according to claim 2, characterized in that The central angle β between two adjacent sound-absorbing vanes (263) in the circumferential direction is between 15 degrees and 30 degrees.

4. The bladeless fan base according to claim 1, characterized in that The thickness D of the sound-absorbing vane (263) is between 0.5 mm and 3.5 mm.

5. The bladeless fan base according to claim 1, characterized in that The sound-absorbing vane (263) is trapezoidal with a narrower upper part and a wider lower part in the height direction of the sound-absorbing component (26).

6. The bladeless fan base according to claim 1, characterized in that The through hole (2611) is a circular hole, and the diameter of the through hole (2611) is between 3 mm and 6 mm.

7. The bladeless fan base according to any one of claims 1 to 5, characterized in that The sound-absorbing component (26) further includes heat dissipation holes (2641) provided at the bottom of the lower cover plate (264).

8. The bladeless fan base according to claim 7, characterized in that The heat dissipation holes (2641) are circular, and the size of the heat dissipation holes (2641) is between 5 mm and 20 mm.

9. The bladeless fan base according to any one of claims 1 to 5, characterized in that The bladeless fan base further includes a bottom plate (27) provided at the bottom of the sound-absorbing component (26), and the sound-absorbing component (26) is mounted on the bottom plate (27) through a snap structure (2642).

10. The bladeless fan base according to any one of claims 1 to 5, characterized in that the sound-absorbing component (26) further includes a flow collector cover (262) provided in the sound-absorbing cavity.

11. The bladeless fan base according to any one of claims 1 to 5, characterized in that the bladeless fan base further includes an impeller assembly provided in the air flow channel (25a), and the impeller assembly includes a base bearing impeller (24) and a motor (23) for driving the impeller to rotate.

12. A bladeless fan, comprising a bladeless fan base, characterized in that the bladeless fan base is the bladeless fan base according to any one of claims 1 to 11.

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