CN106368967B - Pedestal and bladeless fan - Google Patents
Pedestal and bladeless fan Download PDFInfo
- Publication number
- CN106368967B CN106368967B CN201611014958.1A CN201611014958A CN106368967B CN 106368967 B CN106368967 B CN 106368967B CN 201611014958 A CN201611014958 A CN 201611014958A CN 106368967 B CN106368967 B CN 106368967B
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- China
- Prior art keywords
- pedestal
- air inlet
- noise
- shell
- silencing cavity
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of pedestal and bladeless fan, pedestal is used for bladeless fan, and pedestal includes shell, and shell includes outer wall, and outer wall is formed with air inlet；The dynamical system being arranged in shell, for sucking air by air inlet and establishing air-flow, dynamical system is formed with air inlet；With the noise-reducing structure for being arranged in shell and surrounding covering air inlet, noise-reducing structure is formed with the silencing cavity of connection air inlet and the via hole for being connected to silencing cavity and air inlet, and the sectional area of via hole is less than the sectional area of the silencing cavity.In the pedestal and bladeless fan of embodiment of the present invention, since the sectional area of via hole is less than the sectional area of silencing cavity, the more difficult silencing cavity big from sectional area of noise generated when power system operational is propagated to the small via hole of sectional area, sound is consumed by reflection back and forth inside silencing cavity, thereby reduces noise when bladeless fan work.
Description
Technical field
The present invention relates to fan art more particularly to a kind of pedestal and bladeless fans.
Background technology
Existing bladeless fan includes pedestal.Pedestal includes the dynamical system of shell and setting inside the shell.Shell is formed
There is an air inlet, when work, dynamical system sucks air by air inlet and establishes air-flow.However sent out when power system operational
Noise can cause the noise of bladeless fan larger by air inlet to external diffusion.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, 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：Shell, the shell includes outer wall, described
Outer wall is formed with air inlet；Dynamical system in the shell is set, for passing through the air inlet sucking air and establishing
Air-flow, the dynamical system are formed with air inlet；The noise reduction knot of the air inlet is covered with being arranged in the shell and surrounding
Structure, the noise-reducing structure are formed with the silencing cavity for being connected to the air inlet and the conducting for being connected to the silencing cavity and the air inlet
Hole, the sectional area of the via hole are less than the sectional area of the silencing cavity.
In some embodiments, the noise-reducing structure includes mounting plate and the silencer cover that is arranged on the mounting plate,
The mounting plate is fixed on the housing, and the silencer cover is formed with the silencing cavity, and offers the connection silencing cavity
Multiple mounting holes；
The noise-reducing structure includes the phonocatheter for being interspersed in the mounting hole and stretching into the silencing cavity, the phonocatheter
It is formed with the via hole.
In some embodiments, the noise-reducing structure includes the Sealing shield ring being movably set on the phonocatheter, described
Sealing shield ring is resisted against on the outer surface of the silencer cover.
In some embodiments, the quantitative range of the via hole is 40-65.
In some embodiments, the via hole is rounded, and the diameter range of the via hole is 10-17mm.
In some embodiments, the length of the via hole is 5-15mm.
In some embodiments, in a ring, the pedestal includes being arranged in the shell and covering institute to the outer wall
The grating element of the annular of air inlet is stated, the grating element includes annular frame and between the circumferencial direction of the annular frame
Every the blade being arranged on the annular frame, the tangent line side of the blade and the junction of the blade and the annular frame
To at an acute angle.
In some embodiments, the ranging from 50-60 degree of the acute angle.
In some embodiments, orthographic projection of the two adjacent blades on the inner peripheral surface of the annular frame
Connect or is superimposed.
In some embodiments, the gap between two adjacent blades is 2-6mm.
In some embodiments, the shell includes bottom plate, and the outer wall is detachably secured on the bottom plate, described
Pedestal includes the sound baffle being arranged on the bottom plate, and the sound baffle is oppositely arranged with the 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 and bladeless fan of embodiment of the present invention, since the sectional area of via hole is less than the section of silencing cavity
Product, the more difficult silencing cavity big from sectional area of noise that when power system operational generates are propagated to the small via hole of sectional area, sound
It is consumed back and forth by reflection inside silencing cavity, thereby reduces noise when bladeless fan work.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, wherein：
Fig. 1 is the stereoscopic schematic diagram of the bladeless fan of embodiment of the present invention；
Fig. 2 is the stereoscopic schematic diagram 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 stereoscopic schematic diagram of the pedestal of embodiment of the present invention；
Fig. 5 is the stereoscopic schematic diagram 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；
Shell 10, bottom plate 11, outer wall 12, air inlet 121, air admission hole 1211, partition board 14, via 141；
Dynamical system 20, impeller housing 21, air inlet 211, impeller 22, motor 23, diffuser 24, fin 241, air outlet
242, motor housing 25, gas passage 25a, the first fixinig plate 26, the second fixinig plate 27；
Grating element 30, frame 31, blade 32；
Noise-reducing structure 40, silencing cavity 41, via hole 42, opening 42a, mounting plate 43, screw hole 43a, perforation 43b, silencer cover
44, mounting hole 44a, phonocatheter 45, Sealing shield ring 46；
Connecting plate 50；
Sound baffle 60, reflecting curved surface 61；
Extension spring 70；
Fan head 102, nozzle 1021.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with spy
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be to be electrically connected or can mutually communicate to be mechanical connection；It can be directly connected, it can also be by between intermediary
It connects connected, can be the interaction relationship of the connection or two elements inside two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " 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 is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Referring to Fig. 1, the bladeless fan 1000 of embodiment of the present invention includes pedestal 100 and fan head 102.Fan head 102 is set
It sets on pedestal 100.At work, fan head 102 can blow out wind to bladeless fan 1000.Relative to traditional fan, no leaf wind
Fan 1000 is not easy to hurt the positions such as the finger of user due to not exposed flabellum, and therefore, bladeless fan 1000 has safety
The characteristics of.In addition, the small volume of bladeless fan 1000 so that user's easy cleaning bladeless fan 1000.
Fig. 2 and Fig. 3 is please referred to, pedestal 100 includes shell 10, dynamical system 20, grating element 30 and noise-reducing structure 40.Shell
Body 10 includes bottom plate 11 and outer wall 12.Bottom plate 11 extends outwardly from outer wall 12 so that bladeless fan 1000 can be stablely supported at
On supporting surface, supporting surface is, for example, the planes such as ground or desktop.
Outer wall 12 is annular in shape, and grating element 30 is annular in shape and is arranged in shell 10.Preferably, grating element 30 and outer wall
12 coaxial arrangements.Cricoid outer wall 12 so that bladeless fan 1000 it is more beautiful, 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 are coaxially disposed so that the structure of pedestal 100 is compacter.
Outer wall 12 is formed with air inlet 121, and air inlet 121 is formed with multiple air admission holes 1211 of array arrangement.Air inlet
121 enable dynamical system 20 to suck air to establish air-flow, so that bladeless fan 1000 can form wind with full
The demand of sufficient user.
Multiple air admission holes 1211 are distributed along the circumferencial direction of outer wall 12.In this way so that the incoming air area of air inlet 121 is larger,
Be conducive to increase the air mass flow entered in pedestal 100.Furthermore it is also possible to so that air from the surrounding of shell 10 enter so that
It is more uniform into the air-flow in pedestal 100, so as to reduce noise when air flowing.
In order to enable outer wall 12 has enough intensity, with prevent shell 10 because dropping, hitting etc. it is unexpected due to damage, air inlet
Mouth 121 is in multiple array arrangements, adjacent two array spacings settings along the circumferencial direction of outer wall 12.As shown in Fig. 2, adjacent
Outer wall 12 between two 121 arrays of air inlet is continuous structure.In addition, this also have the advantage that the formation of air admission hole 1211, to
Improve the yield rate of shell 10.
Specifically, air inlet 121 close to bottom plate 11 be arranged so that air move to from bottom to top dynamical system 20 with
Shorten path and the resistance of air, therefore, the noise that can reduce the life of air stream movable property is arranged close to bottom plate 11 for air inlet 121.
Each air admission hole 1211 is rounded, a diameter of 1-3mm of air admission hole 1211.Such as air admission hole 1211 is a diameter of
2mm.In this way can ensure bladeless fan 1000 normally sucking air while, can reduce gas flowing when generate make an uproar
Sound.
In 121 array of the same air inlet, between adjacent two air admission holes 1211 between be divided into 1-3mm.Preferably,
It is divided into 2mm between two adjacent air admission holes 1211.It is possible thereby to reduce the noise generated when air flowing.
Shell 10 further includes the partition board 14 to extend internally from outer wall 12.Partition board 14 is formed with via 141, via 141 with it is outer
Wall 12 is coaxially disposed.
Incorporated by reference to Fig. 3, dynamical system 20 is arranged in shell 10, and dynamical system 20 is used to suck sky by air inlet 121
Gas simultaneously establishes 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 shell 10, and impeller housing 21 is formed with the air inlet 211 being connected to air inlet 121.
Impeller 22 is arranged in impeller housing 21.Motor 23 is 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 motor 23 can drive impeller 22 to rotate when working.
When impeller 22 rotates, negative pressure can be generated around impeller 22, so as to suck air, air from air inlet 211
After the pressurization of impeller 22, high pressure draught can be formed.
Diffuser 24 is set to the downstream of the air-flow of the generation of impeller 22, and diffuser 24 is connect with impeller housing 21.Diffuser
24 high-speed flow caused by impeller 22 can be pressurized, be slowed down and racemization, guiding high-speed flow are moved to fan head 102.
It is appreciated that diffuser 24 includes multiple fins 241, the high speed gas that multiple fins 241 can generate impeller 22
Stream is integrated, and may be implemented to eliminate the effect of whirlwind so that the air-flow being discharged from the air outlet 242 of diffuser 24 is more
It is soft.
Motor housing 25 is formed in outside motor 23 and for fixing motor 23.Motor housing 25 and motor 23 are set to diffusion
Between device 24 and impeller 22, motor housing 25 is connect with impeller housing 21.Motor housing 25 can be to avoid motor 23 worked
It is shaken in journey.
Specifically, gas passage 25a, gas passage 25a and diffusion are formed between motor housing 25 and impeller housing 21
Device 24 is connected to.Generated air-flow flows to diffuser 24 after gas passage 25a when the rotation of impeller 22, after diffuser 24
It is outer to enter in fan head 102 to flow to diffuser 24.
The setting of grating element 30 is in shell 10 and covers air inlet 121.In this way, grating element 30 can stop pedestal
Generated sound is directly delivered to by air inlet 121 outside pedestal 100 in 100 so that mistake of the sound in 100 internal reflection of pedestal
Consumed in journey, to reduce the sound passed to outside shell 10, play reduce noise effect, and air can normally into
Enter in shell 10 and ensures bladeless fan 1000 and work normally.
Specifically, as shown in Figures 5 and 6, grating element 30 includes annular frame 31 and the circumferencial direction heap along frame 31
The folded blade 32 being fixed on frame 31, blade 32 and the tangential direction of blade 32 and the junction X of annular frame 31 are at an acute angle
α。
It is appreciated that certain gap is formed between two adjacent blades 32, so that air can pass through lattice
Grid element 30.
The tangential direction α at an acute angle of blade 32 and blade 32 and the junction X of annular frame 31, can increase noise from shell
The path outside shell 10 is passed in body 10, to prevent noise directly through behind the gap between two blades 32 from air admission hole
1211 pass to outside pedestal 100.
Preferably, the blade 32 and tangential direction α at an acute angle of blade 32 and the junction X of annular frame 31 is ranging from
50-60 degree.For example, the angle of sharp angle α is 55 degree.Enter in shell 10 in this way, being not only convenient for air, can be passed with blocking noise
To outside shell.
Dynamical system 20 stretches into grating element 30 so that the air inlet 211 of dynamical system is located at grating element 20, to make
Obtaining grating element 30 can preferably stop that generating 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 model at a distance from above
In enclosing so that noise can pass to no leaf wind by roundtrip to consume between outer wall 12 and grating element 30 to reduce
Noise outside fan 1000.
In one example, the distance between grating element 30 and outer wall 12 are 10mm.Certain frequency can so be reduced
Noise in range.In another example, the distance between grating element 30 and outer wall 12 are 20mm.
In order to enable pedestal 100 is more prone to manufacture, outer wall 12 and grating element 30 are detachably secured on bottom plate 11.
In one example, when installing grating element 30, first grating element 30 can be fixed on bottom plate 11, it then will be with grating element
30 bottom plate 11 is assembled to outer wall 12, and keeps outer wall 12 and grating element 30 coaxial, and grating element 30 and outer wall 12 can be with
It is mounted on bottom plate 11 by screw etc..
In order to enable the preferably blocking noise of grating element 30 passes to outside pedestal 100, adjacent two blades 32 are in annular
The orthographic projection on inner peripheral surface 30a on frame 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.In this way can also blocking noise be directly delivered to outside shell 10.
In addition, the thickness D of blade 32 is 1-3mm.Such as D is 2mm.The intensity that can ensure blade 32 in this way, to carry
The qualification rate of the manufacture production of high grating element 30.
Incorporated by reference to Fig. 7, the setting of noise-reducing structure 40 is in shell 10 and surrounds covering air inlet 211.The formation of noise-reducing structure 40
There are silencing cavity 41 and via hole 42.Silencing cavity 41 is connected to air inlet 211.Via hole 42 is connected to silencing cavity 41 and air inlet 121.It leads
The sectional area of through-hole 42 is less than the sectional area of silencing cavity 41.
In this way, the sectional area due to via hole 42 is less than the sectional area of silencing cavity 41, it can according to duct acoustics knowwhy
Know, the more difficult silencing cavity 41 big from sectional area of noise that dynamical system 20 generates when working is passed to the small via hole 42 of sectional area
It broadcasts, sound is consumed by reflection back and forth inside silencing cavity 41, thereby reduces noise when bladeless fan 1000 works.Separately
Outside, air can normally enter in shell 10, ensure that bladeless fan 1000 works normally.Air and/or sound are from via hole 42
The cross section propagated to noise-reducing structure 40 belongs to expanding.
It is appreciated that via hole 42 has two opening 42a of connection, to realize gas communication.In one example, it leads
The quantitative range of through-hole 42 is 40-65.In another example, via hole 42 is rounded, the diameter range of via hole 42
For 10-17mm.The diameter of via hole 42 is, for example, 12mm or 15mm.In another example, the length of via hole 42 is 5-
15mm.The length of via hole 42 is, for example, 10mm.When noise-reducing structure 40 is in the above parameter area, it can ensure pedestal 100
The effect of intake and sound-insulation noise.
Noise-reducing structure 40 includes mounting plate 43, silencer cover 44, phonocatheter 45 and Sealing shield ring 46.
Mounting plate 43 is fixed on the housing 10, and specifically, mounting plate 43 offers multiple screw hole 43a, and installation version 43 can be with
It is fixed on partition board 14 across screw hole 43a by screw.Mounting plate 43 offers perforation 43b, and perforation 43b is connected to silencing cavity 41.
Dynamical system 20 pass through perforation 43b and partial receipt in silencing cavity 41.
Silencer cover 44 is arranged on mounting plate 43.Silencer cover 44 is formed with silencing cavity 41, and offers connection silencing cavity 41
Multiple mounting hole 44a.Silencer cover 44 can be integrally formed with mounting plate 43.
Phonocatheter 45 is interspersed in mounting hole 44a and stretches into silencing cavity 41, and phonocatheter 45 is formed with via hole 42.Phonocatheter
45 are interspersed in mounting hole 44a, and are formed with via hole 42 so that via hole 42 is easy to be formed, and can reduce noise-reducing 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 into 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 mounted on a mounting hole
In 44a.It is appreciated that in practice, other mounting hole 44a are also correspondingly equipped with phonocatheter 45.
Referring to Fig. 3, pedestal 100 further includes the sound baffle 60 being arranged on bottom plate 11, sound baffle 60
It is oppositely arranged with noise-reducing structure 40.In this way, noise can enter silencing cavity after the reflection of sound baffle 60 from acoustic aperture 42 is led
In 41, and it is depleted in 41 internal reflection of silencing cavity, to realize the effect for eliminating noise.
Sound baffle 60 includes the reflecting curved surface 61 opposite and protruding upward with bottom plate 11.The surface area of reflecting curved surface 61
It is larger, enter in silencing cavity 41 so as to reflect more sound, so that the consumption in silencing cavity 41 of more sound.
Pedestal 100 further includes silencer element (not shown).Silencer element is arranged between outer wall 12 and grating element 30.Disappear
Tone part is, for example, the parts made of fluff material such as cotton piece.Since silencer element has multiple holes being interspersed, from
And there is preferable sound-absorbing effect, to further improve the anti-acoustic capability of bladeless fan 1000.
Referring to Fig. 1, fan head 102 is formed with air duct and is connected to the nozzle 1021 in air duct, fan head 102 and pedestal 100
Connection is sent into air duct with the air-flow for generating dynamical system 20 and is sprayed outward through nozzle 1021.
Further, it is provided with foam in the air duct of fan head 102.Foam can absorb generated in air duct make an uproar as a result,
Sound, so as to reduce the noise of bladeless fan 1000.
The part that fan head 102 upwardly extends is curvilinear, so that air duct is curvilinear, it is possible thereby to when lowering air flowing
The noise of generation.
Referring to Fig. 3 and Fig. 4, connecting plate 50 is equipped between pedestal 100 and fan head 102, connecting plate 50 connects pedestal
100 and fan head 102.
It is fixedly installed the first fixinig plate 26 on connecting plate 50, the second fixinig plate 27 is fixedly installed on partition board 14, the
Two fixinig plates 27 and the first fixinig plate 26 are respectively positioned in shell 10.More extension springs 70 stretch the first fixinig plate 26 of connection and move
Force system 20, and stretch the second fixinig plate 27 of connection and dynamical system 20.
Extension spring 70 allows dynamical system 20 to hang up, and the vibration that dynamical system 20 generates will not be transmitted directly
Onto shell 10, so as to reduce the noise of the generation of pedestal 100.
More 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 fixinig plate 26 and dynamical system 20.Preferably, first group of three extension springs 70 are along dynamical system 20
Circumferencial direction uniform intervals are arranged, that is to say, that the angle between adjacent two extension springs 70 in first group of extension spring 70
Degree is 120 degree.
Second group of three extension springs 70 are all connected with the second fixinig plate 27 and dynamical system 20.Preferably, second group
Three extension springs 70 are arranged along the circumferencial direction uniform intervals of dynamical system 20, 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, the stiffness factor of extension spring 70 is in 2-4N/mm, the ranging from 15-25mm of raw footage.Example
Such as, the stiffness factor of extension spring 70 is 3N/mm, raw footage 20mm.
As shown in the dotted arrow of Fig. 3, when bladeless fan 1000 works, motor 23 drives impeller 22 to rotate, and air is successively
It is sucked by impeller 22 by air admission hole 1211, grating element 30, noise-reducing structure 40 and air inlet 211, impeller 22 adds air
High-speed flow is formed after speed pressurization, high-speed flow enters the air duct of fan head 102 after gas passage 25a and diffuser 24 successively
In, it is finally sprayed from nozzle 1021, to which the high-speed flow that nozzle 1021 sprays can roll up the air around inhaling, to be 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 gradually increases, out of service in bladeless fan 1000
When, the rotating speed of motor 23 continuously decreases, it is possible thereby to so that bladeless fan 1000 slowly start and it is out of service, so as to drop
The vibration of low bladeless fan 1000, to reduce the generation of noise.
As shown in figure 8, sound pressure level curve when curve a is the omission noise-reducing structure 40 of bladeless fan 1000, curve b is no leaf
Sound pressure level curve when noise-reducing structure 40 is provided in fan 1000.Wherein, ordinate SPL indicates the acoustic pressure of bladeless fan 1000
Grade, abscissa f indicate the frequency of bladeless fan 1000.As seen from Figure 8, when being provided with noise-reducing structure 40 in shell 10
When, the sound pressure level of bladeless fan 1000 declines.
To sum up, embodiment of the present invention includes shell 10, dynamical system 20 and grating element 30 with pedestal 100.Shell
10 include outer wall 12, and outer wall 12 is formed with air inlet 121, and dynamical system 20 is arranged in shell 10, and dynamical system 20 is for leading to
It crosses air inlet 121 to suck air and establish air-flow, dynamical system is formed with air inlet 211.Noise-reducing structure 40 is formed with silencing cavity
41 and via hole 42.Silencing cavity 41 is connected to air inlet 211.Via hole 42 is connected to silencing cavity 41 and air inlet 121.Via hole 42
Sectional area is less than the sectional area of silencing cavity 41.
The pedestal 100 and bladeless fan 1000 of the present invention, since the sectional area of via hole 42 is less than the section of silencing cavity 41
Product, the more difficult silencing cavity 41 big from sectional area of noise that dynamical system 20 generates when working are passed to the small via hole 42 of sectional area
It broadcasts, sound is consumed by reflection back and forth inside silencing cavity 41, thereby reduces noise when bladeless fan 1000 works.Separately
Outside, air can normally enter in shell 10, ensure that bladeless fan 1000 works normally.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the present invention.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
While embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case of not departing from the principle of the present invention and objective, modification, replace and become
Type, the scope of the present invention are limited by claim and its equivalent.
Claims (11)
1. a kind of pedestal, it to be used for bladeless fan, which is characterized in that the pedestal includes：
Shell, the shell include outer wall, and the outer wall is formed with air inlet；
Dynamical system in the shell is set, for passing through the air inlet sucking air and establishing air-flow, the power
System is formed with air inlet；With
It is arranged in the shell and surrounds the noise-reducing structure for covering the air inlet, the noise-reducing structure is formed with described in connection
The silencing cavity of air inlet and the via hole for being connected to the silencing cavity and the air inlet, the sectional area of the via hole is less than described
The sectional area of silencing cavity；
The noise-reducing structure includes mounting plate and the silencer cover that is arranged on the mounting plate, and the mounting plate is fixed on the shell
On body, the silencer cover is formed with the silencing cavity, and offers the multiple mounting holes for being connected to the silencing cavity；
The noise-reducing structure includes the phonocatheter for being interspersed in the mounting hole and stretching into the silencing cavity, and the phonocatheter is formed
There is the via hole.
2. pedestal as described in claim 1, which is characterized in that the noise-reducing structure includes being movably set on the phonocatheter
Sealing shield ring, the Sealing shield ring is resisted against on the outer surface of the silencer cover.
3. pedestal as described in claim 1, which is characterized in that the quantitative range of the via hole is 40-65.
4. pedestal as described in claim 1, which is characterized in that the via hole is rounded, the diameter model of the via hole
It encloses for 10-17mm.
5. pedestal as claimed in claim 4, which is characterized in that the length of the via hole is 5-15mm.
6. pedestal as described in claim 1, which is characterized in that in a ring, the pedestal includes being arranged described to the outer wall
In shell and the grating element of the annular of the covering air inlet, the grating element includes annular frame and along the ring frame
The circumferencial direction of frame is arranged at intervals on the blade on the annular frame, the blade and the blade and the annular frame
The tangential direction of junction is at an acute angle.
7. pedestal as claimed in claim 6, which is characterized in that the ranging from 50-60 degree of the acute angle.
8. pedestal as claimed in claim 6, which is characterized in that inner circle of the two adjacent blades in the annular frame
Orthographic projection on circumferential surface connects or is superimposed.
9. pedestal as claimed in claim 6, which is characterized in that the gap between two adjacent blades is 2-6mm.
10. pedestal as described in claim 1, which is characterized in that the shell includes bottom plate, and the outer wall is detachably secured to
On the bottom plate, the pedestal includes the sound baffle being arranged on the bottom plate, the sound baffle and the noise reduction
Structure is oppositely arranged.
11. a kind of bladeless fan, it is characterised in that include the pedestal as described in claim 1-10 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014958.1A CN106368967B (en) | 2016-11-15 | 2016-11-15 | Pedestal and bladeless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014958.1A CN106368967B (en) | 2016-11-15 | 2016-11-15 | Pedestal and bladeless fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106368967A CN106368967A (en) | 2017-02-01 |
| CN106368967B true CN106368967B (en) | 2018-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611014958.1A Active CN106368967B (en) | 2016-11-15 | 2016-11-15 | Pedestal and bladeless fan |
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| Country | Link |
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| CN (1) | CN106368967B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762755A (en) * | 2017-02-20 | 2017-05-31 | 卢碧莲 | Intelligent air processing unit |
| WO2018176234A1 (en) * | 2017-03-28 | 2018-10-04 | 美的集团股份有限公司 | Base and bladeless fan |
| CN109026797A (en) * | 2018-08-25 | 2018-12-18 | 北京天然天启科技有限公司 | The bladeless fan of changeable panning angle |
| CN113638910B (en) * | 2021-07-26 | 2023-07-28 | 深圳市象族智能科技有限公司 | Noise reduction structure and foot flicking device |
| CN113633206B (en) * | 2021-07-26 | 2023-07-28 | 深圳市象族智能科技有限公司 | Foot brushing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2468330A (en) * | 2009-03-04 | 2010-09-08 | Dyson Technology Ltd | Tilting fan stand |
| CN201963613U (en) * | 2010-12-20 | 2011-09-07 | 徐伟 | Air inlet structure of bladeless fan |
| CN102305220B (en) * | 2011-08-16 | 2015-01-07 | 江西维特科技有限公司 | Low-noise blade-free fan |
| CN202338473U (en) * | 2011-09-26 | 2012-07-18 | 刘向星 | Bladeless fan |
| GB2510195B (en) * | 2013-01-29 | 2016-04-27 | Dyson Technology Ltd | A fan assembly |
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2016
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| CN106368967A (en) | 2017-02-01 |
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Effective date of registration: 20180710 Address after: 528311 4 Global Innovation Center, industrial road, Beijiao Town, Shunde District, Foshan, Guangdong, China Applicant after: Guangdong Midea white Appliance Technology Innovation Center Co., Ltd. Applicant after: Midea Group Co., Ltd. Address before: 528311, 26-28, B District, Mei headquarters building, 6 Mei Road, Beijiao Town, Shunde District, Foshan, Guangdong. Applicant before: Midea Group Co., Ltd. |
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