CN106368967A - Pedestal and bladeless fan - Google Patents

Abstract

The invention discloses a pedestal and a bladeless fan. The pedestal is used for the bladeless fan, and comprises a housing, a power system arranged in the housing and a silencing structure arranged in the housing and capable of surrounding and covering an air inlet; the housing comprises an outer wall; a gas inlet is formed in the outer wall; the power system is used for sucking air through the air inlet and establishing airflow; the air inlet is formed in the power system; a silencing cavity which communicates with the air inlet and a via hole for enabling the silencing cavity to communicate with the gas inlet are formed in the silencing structure; and section area of the via hole is smaller than that of the silencing cavity. According to the pedestal and the bladeless fan of the embodiment, the section area of the via hole is smaller than that of the silencing cavity, so that noises generated when the power system works are difficult to spread to the via hole with the relatively small section from the silencing cavity with relatively great section, and noises are consumed in a manner of being reflected front and back inside the silencing cavity, and therefore, noises generated when the bladeless fan works are reduced.

Description

Pedestal and bladeless fan

Technical field

The present invention relates to fan art, more particularly, to a kind of pedestal and bladeless fan.

Background technology

Existing bladeless fan includes pedestal.Pedestal includes shell and is arranged on the dynamical system of inside the shell.Shell is formed There is air inlet, during work, dynamical system sucks air by air inlet and sets up air-flow.But send during power system operational Noise can lead to the noise of bladeless fan larger by air inlet to external diffusion.

Content of the invention

It is contemplated that at least solving one of technical problem present in prior art.For this reason, the present invention provides a kind of base Seat and bladeless fan.

The pedestal of embodiment of the present invention is used for bladeless fan, and pedestal includes: housing, described housing includes outer wall, described Outer wall is formed with air inlet；It is arranged on the dynamical system in described housing, for air being sucked by described air inlet and setting up Air-flow, described dynamical system is formed with air inlet；Be arranged in described housing and surround the noise reduction knot covering described air inlet Structure, described noise-reducing structure is formed with the silencing cavity connecting described air inlet and the conducting connecting described silencing cavity and described air inlet Hole, the sectional area of described via is less than the sectional area of described silencing cavity.

In some embodiments, described noise-reducing structure includes installing plate and is arranged on silencer cover on described installing plate, Described installing plate is fixing, and described silencer cover is formed with described silencing cavity on the housing, and offers the described silencing cavity of connection Multiple installing holes；

Described noise elimination structure includes being interspersed in described installing hole and stretching into the phonocatheter of described silencing cavity, described phonocatheter It is formed with described via.

In some embodiments, described noise-reducing structure includes the Sealing shield ring being movably set on described phonocatheter, described Sealing shield ring is resisted against on the outer surface of described silencer cover.

In some embodiments, the quantitative range of described via is 40-65.

In some embodiments, described via is rounded, described via diameter range be 10-17mm.

In some embodiments, the length of described via is 5-15mm.

In some embodiments, ringwise, described pedestal includes being arranged in described housing and covering institute described outer wall State the grating element of the annular of air inlet, described grating element includes annular frame and along between the circumferencial direction of described annular frame Every the blade being arranged on described annular frame, the tangent line side of the junction of described blade and described blade and described annular frame To at an acute angle.

In some embodiments, the scope of described acute angle is 50-60 degree.

In some embodiments, orthographic projection on the inner peripheral surface of described annular frame for the two adjacent described blades Connect or be superimposed.

In some embodiments, the gap between two adjacent described blades is 2-6mm.

In some embodiments, described housing includes base plate, and described outer wall is detachably secured on described base plate, described Pedestal includes the sound baffle being arranged on described base plate, and described sound baffle is oppositely arranged with described noise-reducing structure.

The bladeless fan of embodiment of the present invention includes the pedestal described in any of the above embodiment.

In the pedestal of embodiment of the present invention and bladeless fan, because the sectional area of via is less than the section of silencing cavity Long-pending, the more difficult silencing cavity big from sectional area of the noise producing during power system operational is propagated to the little via of sectional area, sound Consumed by reflection back and forth inside silencing cavity, and then reduce noise during bladeless fan work.

The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description

The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below Substantially with easy to understand, wherein:

Fig. 1 is the schematic perspective view of the bladeless fan of embodiment of the present invention；

Fig. 2 is the schematic perspective view of the pedestal of embodiment of the present invention；

Fig. 3 is the cross section stereo schematic diagram of the pedestal of embodiment of the present invention；

Fig. 4 is the internal structure schematic perspective view of the pedestal of embodiment of the present invention；

Fig. 5 is the schematic perspective view of the grating element of embodiment of the present invention；

Fig. 6 is the schematic cross-section of the grating element of embodiment of the present invention；

Fig. 7 is the exploded perspective schematic diagram of the noise-reducing structure of the pedestal of embodiment of the present invention；

Fig. 8 is the sound pressure curve schematic diagram of the bladeless fan of embodiment of the present invention.

Main element symbol description:

Bladeless fan 1000；

Pedestal 100；

Housing 10, base plate 11, outer wall 12, air inlet 121, air inlet 1211, dividing plate 14, via 141；

Dynamical system 20, impeller housing 21, air inlet 211, impeller 22, motor 23, diffuser 24, fin 241, air outlet 242nd, motor housing 25, gas passage 25a, the first stator 26, the second stator 27；

Grating element 30, framework 31, blade 32；

Noise-reducing structure 40, silencing cavity 41, via 42, opening 42a, installing plate 43, screw 43a, perforation 43b, silencer cover 44th, installing hole 44a, phonocatheter 45, Sealing shield ring 46；

Connecting plate 50；

Sound baffle 60, reflecting curved surface 61；

Extension spring 70；

Fan 102, nozzle 1021.

Specific embodiment

Embodiments of the present invention are described below in detail, the example of described embodiment is shown in the drawings, wherein ad initio To the element that same or similar label represents same or similar element or has same or like function eventually.Below by ginseng The embodiment examining Description of Drawings is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.

In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " up time The orientation of instruction such as pin ", " counterclockwise " or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of The description present invention and simplification describe, rather than the device of instruction or hint indication or element must have specific orientation, Yi Te Fixed azimuth configuration and operation, are therefore not considered as limiting the invention.Additionally, term " first ", " second " are only used for Description purpose, and it is not intended that indicating or hint relative importance or the implicit quantity indicating indicated technical characteristic. Thus, define " first ", the feature of " second " can be expressed or implicitly include one or more described feature.? In description of the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.

In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can To be mechanical connection or electrical connection or can mutually communicate；Can be to be joined directly together it is also possible to pass through between intermediary Connect connected, can be the connection of two element internals or the interaction relationship of two elements.Ordinary skill for this area For personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score The first and second feature directly contacts can be included not to be directly contact but passes through it is also possible to include the first and second features Between other characterisation contact.And, fisrt feature second feature " on ", that " top " and " above " include first is special Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of Fisrt feature level height is less than second feature.

Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.In order to Simplify disclosure of the invention, hereinafter the part and setting of specific examples is described.Certainly, they are only merely illustrative, and And purpose does not lie in the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or reference letter, This repeat to be for purposes of simplicity and clarity, itself do not indicate discussed various embodiment and/or setting between Relation.Additionally, the invention provides various specific technique and material example, but those of ordinary skill in the art are permissible Recognize the application of other techniques and/or the use of other materials.

Refer to Fig. 1, the bladeless fan 1000 of embodiment of the present invention includes pedestal 100 and fan 102.Fan 102 sets Put on pedestal 100.Operationally, fan 102 can blow out wind to bladeless fan 1000.With respect to traditional fan, no leaf wind Fan 1000, due to the flabellum not exposed, is not easy to hurt the positions such as the finger of user, therefore, bladeless fan 1000 has safety Feature.In addition, the small volume of bladeless fan 1000 is so that user's easy cleaning bladeless fan 1000.

Refer to Fig. 2 and Fig. 3, pedestal 100 includes housing 10, dynamical system 20, grating element 30 and noise-reducing structure 40.Shell Body 10 includes base plate 11 and outer wall 12.Base plate 11 stretches out from outer wall 12 so that bladeless fan 1000 can be stablely supported at On supporting surface, supporting surface is, for example, the plane such as ground or desktop.

Outer wall 12 is annular in shape, and grating element 30 is annular in shape and is arranged in housing 10.It is preferred that grating element 30 and outer wall 12 are coaxially disposed.The outer wall 12 of ring-type makes bladeless fan 1000 more attractive in appearance, the surface area of outer wall 12 can also be increased so that Incoming air area is larger.In addition, outer wall 12 and grating element 30 be coaxially disposed make pedestal 100 structure compacter.

Outer wall 12 is formed with air inlet 121, and air inlet 121 is formed with multiple air inlets 1211 of array arrangement.Air inlet 121 enable dynamical system 20 to suck air thus setting up air-flow, so that bladeless fan 1000 can form wind with full The demand of sufficient user.

Multiple air inlets 1211 are along the circumferencial direction distribution of outer wall 12.So make the incoming air area of air inlet 121 larger, Be conducive to increasing the air mass flow entering in pedestal 100.Furthermore it is also possible to make air enter from the surrounding of housing 10, so that The air-flow entering in pedestal 100 is more uniform, such that it is able to reduce noise during air flow.

So that outer wall 12 has enough intensity, to prevent housing 10 from damaging, air inlet because dropping, clashing into etc. unexpected Mouth 121 is in multiple array arrangements along the circumferencial direction of outer wall 12, and two adjacent array spacings are arranged.As shown in Fig. 2 it is adjacent Outer wall 12 between two air inlet 121 arrays is continuous structure.In addition, this also have the advantage that air inlet 1211 is formed, thus Improve the yield rate of housing 10.

Specifically, air inlet 121 is arranged near base plate 11 so that air move to from bottom to top dynamical system 20 with Shorten path and the resistance of air, therefore, air inlet 121 can reduce the noise of air flow generation near base plate 11 setting.

Each air inlet 1211 is rounded, a diameter of 1-3mm of air inlet 1211.For example air inlet 1211 is a diameter of 2mm.So can ensure bladeless fan 1000 normally sucks air while, can reduce gas flow when produce make an uproar Sound.

In same air inlet 121 array, between two adjacent air inlets 1211, it is spaced apart 1-3mm.Preferably, It is spaced apart 2mm between two adjacent air inlets 1211.The noise producing when thus can reduce air flow.

Housing 10 also includes the dividing plate 14 extending internally from outer wall 12.Dividing plate 14 is formed with via 141, and via 141 is with outward Wall 12 is coaxially disposed.

Incorporated by reference to Fig. 3, dynamical system 20 is arranged in housing 10, and dynamical system 20 is used for sucking sky by air inlet 121 Gas simultaneously sets up air-flow.Dynamical system 20 includes impeller housing 21, impeller 22, motor 23, diffuser 24 and motor housing 25.

Impeller housing 21 is erected in housing 10, and impeller housing 21 is formed with the air inlet 211 connecting with air inlet 121.

Impeller 22 is arranged in impeller housing 21.Motor 23 is used for driving impeller 22.Specifically, motor 23 is located at impeller outer In shell 21, the output shaft of motor 23 is fixedly connected with impeller 22 so that impeller 22 can be driven to rotate when motor 23 works.

During impeller 22 rotation, negative pressure around impeller 22, can be produced, such that it is able to suck air, air from air inlet 211 After impeller 22 pressurization, high pressure draught can be formed.

Diffuser 24 is arranged at the downstream of the air-flow of impeller 22 generation, and diffuser 24 is connected with impeller housing 21.Diffuser 24 can carry out being pressurized, slow down and racemization to high velocity air produced by impeller 22, and guiding high velocity air is to fan 102 motion.

It is appreciated that diffuser 24 includes multiple fins 241, the high speed gas that multiple fins 241 can produce to impeller 22 Stream is integrated, and can realize eliminating the effect of whirlwind so that the air-flow discharged from the air outlet 242 of diffuser 24 more Soft.

Motor housing 25 is formed at outside motor 23 and is used for fixing motor 23.Motor housing 25 and motor 23 are all located at diffusion Between device 24 and impeller 22, motor housing 25 is connected with impeller housing 21.Motor housing 25 can avoid motor 23 worked Rock in journey.

Specifically, it is formed with gas passage 25a, gas passage 25a and diffusion between motor housing 25 and impeller housing 21 Device 24 connects.During impeller 22 rotation, produced air-flow flows to diffuser 24, after gas passage 25a after diffuser 24 Flow to outside diffuser 24 to enter in fan 102.

Grating element 30 is arranged in housing 10 and covers air inlet 121.So, grating element 30 can stop pedestal In 100 produced sound by air inlet 121 be directly delivered to pedestal 100 outer so that sound pedestal 100 internal reflection mistake Consume in journey, thus decreasing the sound passing to outside housing 10, serve the effect reducing noise, and air can normally enter Enter in housing 10 and ensure bladeless fan 1000 normal work.

Specifically, as shown in Figures 5 and 6, grating element 30 includes annular frame 31 and the circumferencial direction heap along framework 31 The folded blade 32 being fixed on framework 31, the tangential direction of the junction x of blade 32 and blade 32 and annular frame 31 is at an acute angle α.

It is appreciated that being formed with certain gap between adjacent two blades 32, so that air can pass through lattice Grid element 30.

Blade 32 and the tangential direction α at an acute angle of blade 32 and the junction x of annular frame 31, can increase noise from shell Pass to the path outside housing 10 in body 10, thus prevent noise directly through behind the gap between two blades 32 from air inlet 1211 pass to outside pedestal 100.

It is preferred that the scope of the tangential direction of blade 32 and the junction x of blade 32 and annular frame 31 α at an acute angle is 50-60 degree.For example, the angle of sharp angle α is 55 degree.So, it is not only convenient for air to enter in housing 10, can be passed with blocking noise To outside housing.

Dynamical system 20 stretches into grating element 30 and makes the air inlet 211 of dynamical system be located at grating element 20, so that Obtain grating element 30 and can preferably stop that producing sound by air inlet 211 passes to outside pedestal 100.

The distance between grating element 30 and outer wall 12 are 5-30mm.Grating element 30 and outer wall 12 are above apart from model Enclose interior so that noise can between outer wall 12 and grating element 30 roundtrip to consume, thus decrease passing to no leaf wind Noise outside fan 1000.

In one example, the distance between grating element 30 and outer wall 12 are 10mm.Certain frequency so can be reduced In the range of noise.In another one example, the distance between grating element 30 and outer wall 12 are 20mm.

So that pedestal 100 is more prone to manufacture, outer wall 12 and grating element 30 are detachably secured on base plate 11.? In one example, when installing grating element 30, first grating element 30 can be fixed on base plate 11, then will carry grating element 30 base plate 11 is assembled to outer wall 12, and makes outer wall 12 and grating element 30 coaxially, and grating element 30 is all permissible with outer wall 12 It is arranged on base plate 11 by screw etc..

So that grating element 30 preferably blocking noise passes to outside pedestal 100, two adjacent blades 32 are in annular The orthographic projection on inner peripheral surface 30a on framework 30 connects or is superimposed.

Gap l between two adjacent blades 32 is 2-6mm.For example, the gap l between two adjacent blades 32 is 3mm or 5mm.So can also blocking noise be directly delivered to outside housing 10.

In addition, the thickness d of blade 32 is 1-3mm.Such as d is 2mm.So can ensure that the intensity of blade 32, thus carrying High grating element 30 manufactures the qualification rate producing.

Incorporated by reference to Fig. 7, noise-reducing structure 40 is arranged in housing 10 and surrounds and covers air inlet 211.Noise-reducing structure 40 is formed There are silencing cavity 41 and via 42.Silencing cavity 41 connects air inlet 211.Via 42 connection silencing cavity 41 and air inlet 121.Lead The sectional area of through hole 42 is less than the sectional area of silencing cavity 41.

So, because the sectional area of via 42 is less than the sectional area of silencing cavity 41, can according to duct acoustics theoretical knowledge Know, the more difficult silencing cavity 41 big from sectional area of noise producing during dynamical system 20 work passes to the little via of sectional area 42 Broadcast, sound is consumed by reflection inside silencing cavity 41 back and forth, and then reduce noise during bladeless fan 1000 work.Separately Outward, air can normally enter in housing 10 it is ensured that bladeless fan 1000 normal work.Air and/or sound are from via 42 The cross section propagated to noise-reducing structure 40 belongs to expanding.

It is appreciated that via 42 has two opening 42a of connection, to realize gas communication.In one example, lead The quantitative range of through hole 42 is 40-65.In another example, via 42 is rounded, via 42 diameter range For 10-17mm.The diameter of via 42 is, for example, 12mm or 15mm.In another example, the length of via 42 is 5- 15mm.The length of via 42 is, for example, 10mm.When noise-reducing structure 40 is in above parameter area, ensure that pedestal 100 Intake and the effect of sound-insulation noise.

Noise-reducing structure 40 includes installing plate 43, silencer cover 44, phonocatheter 45 and Sealing shield ring 46.

Installing plate 43 is fixing on the housing 10, and specifically, installing plate 43 offers multiple screw 43a, installs version 43 permissible It is fixed on dividing plate 14 through screw 43a by screw.Installing plate 43 offers perforation 43b, perforation 43b connection silencing cavity 41. Dynamical system 20 pass through perforation 43b and partial receipt in silencing cavity 41.

Silencer cover 44 is arranged on installing plate 43.Silencer cover 44 is formed with silencing cavity 41, and offers connection silencing cavity 41 Multiple installing hole 44a.Silencer cover 44 can be integrally formed with installing plate 43.

Phonocatheter 45 is interspersed in installing hole 44a and stretches into silencing cavity 41, and phonocatheter 45 is formed with via 42.Phonocatheter 45 are interspersed in installing hole 44a, and are formed with via 42 so that via 42 is easily formed, and can reduce noise elimination structure 40 Manufacturing cost.

Sealing shield ring 46 is movably set on phonocatheter 45, and Sealing shield ring 46 is resisted against on the outer surface of silencer cover 44.Sealing shield ring 46 can adjust the length that phonocatheter 45 stretches in silencing cavity 41, to optimize the sound-deadening and noise-reducing effect of bladeless fan 1000.

It should be noted that present invention example shown in the drawings only shows that a phonocatheter 45 is arranged on an installing hole In 44a.It is appreciated that in practice, other installing hole 44a are also correspondingly provided with phonocatheter 45.

Referring to Fig. 3, pedestal 100 also includes the sound baffle 60 being arranged on base plate 11, sound baffle 60 It is oppositely arranged with noise-reducing structure 40.So, noise can enter silencing cavity from leading acoustic aperture 42 after sound baffle 60 reflection In 41 and depleted in silencing cavity 41 internal reflection, to realize the effect abating the noise.

Sound baffle 60 includes the reflecting curved surface 61 opposite and protruding upward with base plate 11.The surface area of reflecting curved surface 61 Larger, enter in silencing cavity 41 such that it is able to reflect more sound, so that more sound consumes in silencing cavity 41.

Pedestal 100 also includes silencer element (not shown).Silencer element is arranged between outer wall 12 and grating element 30.Disappear Tone part is, for example, the part that cotton piece etc. is made up of fluff material.Because silencer element has multiple holes being interspersed, from And there is preferable sound-absorbing effect, thus further increase the anti-acoustic capability of bladeless fan 1000.

Referring to Fig. 1, fan 102 is formed with air channel and the nozzle 1021 connect air channel, fans 102 and a pedestal 100 Connection is sent in air channel with the air-flow producing dynamical system 20 and is outwards sprayed through nozzle 1021.

Further, it is provided with foam in the air channel of fan 102.Thus, foam can absorb produced in air channel making an uproar Sound, such that it is able to reduce the noise of bladeless fan 1000.

Fan 102 is upwardly extending partly curvilinear, so that air channel is curvilinear, when thus can lower air flow The noise producing.

Referring to Fig. 3 and Fig. 4, between pedestal 100 and fan 102, it is provided with connecting plate 50, connecting plate 50 connects pedestal 100 and fan 102.

First stator 26 is fixedly installed on connecting plate 50, dividing plate 14 is fixedly installed the second stator 27, the Two stators 27 and the first stator 26 are respectively positioned in housing 10.Many extension spring 70 stretchings connect the first stator 26 and move Force system 20, and stretching connection the second stator 27 and dynamical system 20.

Extension spring 70 allows dynamical system 20 to hang up, and the vibration that dynamical system 20 produces will not directly be transmitted To on housing 10, such that it is able to reduce the noise of pedestal 100 generation.

Many extension springs 70 include two groups, and first group of extension spring 70 includes three, first group of three extension springs 70 are all connected with the first stator 26 and dynamical system 20.It is preferred that the three of first group extension springs 70 are along dynamical system 20 The arrangement of circumferencial direction uniform intervals is that is to say, that angle between adjacent two extension springs 70 in first group of extension spring 70 Spend for 120 degree.

Second group of three extension springs 70 are all connected with the second stator 27 and dynamical system 20.It is preferred that second group Three extension springs 70 along dynamical system 20 the arrangement of circumferencial direction uniform intervals that is to say, that in second group of extension spring 70 Adjacent two extension springs 70 between angle be 120 degree.

In one example, in 2-4n/mm, the scope of raw footage is 15-25mm to the stiffness factor of extension spring 70.Example As the stiffness factor of extension spring 70 is 3n/mm, and raw footage is 20mm.

As shown in the dotted arrow of Fig. 3, during bladeless fan 1000 work, motor 23 drives impeller 22 to rotate, and air is successively Sucked by impeller 22 through air inlet 1211, grating element 30, noise-reducing structure 40 and air inlet 211, impeller 22 by air plus Form high velocity air, high velocity air enters the air channel of fan 102 after sequentially passing through gas passage 25a and diffuser 24 after speed pressurization In, finally spray from nozzle 1021, thus the high velocity air that nozzle 1021 sprays can roll up the air around inhaling, thus being formed Wind, to be embodied as the effect of user's cooling.

In addition, when bladeless fan 1000 starts, the rotating speed of motor 23 is gradually increased, out of service in bladeless fan 1000 When, the rotating speed of motor 23 is gradually lowered, thus so that bladeless fan 1000 slowly starts and out of service, such that it is able to drop The vibration of low bladeless fan 1000, to reduce the generation of noise.

As shown in figure 8, curve a is the sound pressure level curve that bladeless fan 1000 omits during noise-reducing structure 40, curve b is no leaf It is provided with sound pressure level curve during noise-reducing structure 40 in fan 1000.Wherein, vertical coordinate spl represents the acoustic pressure of bladeless fan 1000 Level, abscissa f represents the frequency of bladeless fan 1000.As seen from Figure 8, when being provided with noise-reducing structure 40 in housing 10 When, the sound pressure level of bladeless fan 1000 declines.

To sum up, embodiment of the present invention include housing 10, dynamical system 20 and grating element 30 with pedestal 100.Housing 10 include outer wall 12, and outer wall 12 is formed with air inlet 121, and dynamical system 20 is arranged in housing 10, and dynamical system 20 is used for leading to Cross air inlet 121 to suck air and set up air-flow, dynamical system is formed with air inlet 211.Noise-reducing structure 40 is formed with silencing cavity 41 and via 42.Silencing cavity 41 connects air inlet 211.Via 42 connection silencing cavity 41 and air inlet 121.Via 42 Sectional area is less than the sectional area of silencing cavity 41.

The pedestal 100 of the present invention and bladeless fan 1000, because the sectional area of via 42 is less than the section of silencing cavity 41 Long-pending, the more difficult silencing cavity 41 big from sectional area of noise producing during dynamical system 20 work passes to the little via of sectional area 42 Broadcast, sound is consumed by reflection inside silencing cavity 41 back and forth, and then reduce noise during bladeless fan 1000 work.Separately Outward, air can normally enter in housing 10 it is ensured that bladeless fan 1000 normal work.

In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically enforcement The description of mode ", " example ", " specific example " or " some examples " etc. means to describe with reference to described embodiment or example Specific features, structure, material or feature are contained at least one embodiment or the example of the present invention.In this specification In, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And, the concrete spy of description Levy, structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.

While embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that: These embodiments can be carried out in the case of principle without departing from the present invention and objective with multiple changes, modification, replacement and become Type, the scope of the present invention is limited by claim and its equivalent.

Claims (12)

1. a kind of pedestal, for bladeless fan it is characterised in that described pedestal includes:

Housing, described housing includes outer wall, and described outer wall is formed with air inlet；

It is arranged on the dynamical system in described housing, for air being sucked by described air inlet and setting up air-flow, described power System is formed with air inlet；With

It is arranged in described housing and surrounds the noise-reducing structure covering described air inlet, it is described that described noise-reducing structure is formed with connection The silencing cavity of air inlet and the via connecting described silencing cavity and described air inlet, the sectional area of described via is less than described The sectional area of silencing cavity.

2. pedestal as claimed in claim 1 is it is characterised in that described noise-reducing structure includes installing plate and is arranged on described installation Silencer cover on plate, described installing plate is fixing on the housing, and described silencer cover is formed with described silencing cavity, and the company of offering Lead to multiple installing holes of described silencing cavity；

Described noise elimination structure includes being interspersed in described installing hole and stretching into the phonocatheter of described silencing cavity, and described phonocatheter is formed There is described via.

3. pedestal as claimed in claim 2 is it is characterised in that described noise-reducing structure includes being movably set on described phonocatheter Sealing shield ring, described Sealing shield ring is resisted against on the outer surface of described silencer cover.

4. pedestal as claimed in claim 1 is it is characterised in that the quantitative range of described via is 40-65.

5. pedestal as claimed in claim 1 is it is characterised in that described via is rounded, described via diameter model Enclose for 10-17mm.

6. pedestal as claimed in claim 5 is it is characterised in that the length of described via is 5-15mm.

7. pedestal as claimed in claim 1 it is characterised in that described outer wall ringwise, described pedestal includes being arranged on described In housing and cover described air inlet annular grating element, described grating element includes annular frame and along described ring frame The circumferencial direction of frame is disposed on the blade on described annular frame, described blade and described blade and described annular frame The tangential direction of junction is at an acute angle.

8. pedestal as claimed in claim 7 is it is characterised in that the scope of described acute angle is 50-60 degree.

9. pedestal as claimed in claim 7 it is characterised in that adjacent two described blades described annular frame inner circle Orthographic projection on side face connects or is superimposed.

10. pedestal as claimed in claim 7 is it is characterised in that the gap between adjacent two described blades is 2-6mm.

It is characterised in that described housing includes base plate, described outer wall is detachably secured to 11. pedestals as claimed in claim 1 On described base plate, described pedestal includes the sound baffle being arranged on described base plate, described sound baffle and described noise reduction Structure is oppositely arranged.

A kind of 12. bladeless fans are it is characterised in that include the pedestal as described in claim 1-11 any one.