CN109026836A - Fan and preparation method thereof, fan component and electric appliance - Google Patents
Fan and preparation method thereof, fan component and electric appliance Download PDFInfo
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- CN109026836A CN109026836A CN201810796877.4A CN201810796877A CN109026836A CN 109026836 A CN109026836 A CN 109026836A CN 201810796877 A CN201810796877 A CN 201810796877A CN 109026836 A CN109026836 A CN 109026836A
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- fan
- flexible layer
- blade
- suction surface
- pressure face
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Classifications
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
Abstract
The invention proposes fan and preparation method thereof, fan component and electric appliance, which includes: fan body, which includes multiple blades, and each blade has opposite suction surface and pressure face；Flexible layer, the flexible layer cover at least one of suction surface and pressure face.Fan proposed by the invention, flexible layer is sprayed at least one side in the suction surface and pressure face of its blade, stream pressure in the releasable fan rotary course of flexible layer, help to alleviate blade surface laminar boundary layer along the barometric gradient of flow direction, reduce turbulent flow and significantly reduce frictional force, thus the noise for effectively reducing the resistance of fan rotation, lowering fan rotation.
Description
Technical field
The present invention relates to mechanical design fields, specifically, the present invention relates to fan and preparation method thereof, fan component and electricity
Device.
Background technique
Currently, micro-wave oven is widely used in people's lives as the apparatus of heating food.And microwave oven internal
It is mainly radiated using axial fan assembly to the components such as transformer or frequency converter and magnetron, axial fan assembly mainly wraps
Include small axial flow fan, collector, blower tray and motor.It is small-sized compared with high fan pressure ratio and the large fan of big flow
Aerofoil fan is more focused on generating sufficiently large flow, pressure with small impeller size, to adapt to the demand of heat dissipation, so, it is small
Profile shaft flow fan is also the main noise source of micro-wave oven.In order to improve heat dissipation, small-size shaft can be improved by improving motor speed
The air quantity of flow fan, but correspondingly also will increase the noise of fan, and the more high then fan of revolving speed and fan motor life
It is shorter, while reliability, safety can decline.
Therefore, design a lower resistance, big flow, low noise fan be with a wide range of applications.
Summary of the invention
The present invention is the following discovery based on inventor and completes:
The present inventor has found that existing fan pneumatic efficiency is lower in the course of the research, needs by increasing leaf
Wheel diameter meets radiating requirements to increase the method for acting area, also, when fan is run the aerodynamic noise that generates still without
Effectively method can solve.For fan running generate flow losses and aerodynamic noise problem, although traditional method from
Blade profile moulding, change blade arrangement mode etc., which are started with, achieves certain effect, but still cannot efficiently solve air-flow viscosity and draw
The friction loss risen, also, the turbulence noise formed for blade surface turbulent flow or flow separation can not also efficiently control.
So the present inventor designs a kind of new fan, the pressure face and suction of blade by studying for a long period of time
The flexible layer sprayed at least one side in face, the stream pressure in releasable fan rotary course help to alleviate blade table
Surface layer laminar boundary layer reduces turbulent flow and significantly reduces frictional force along the barometric gradient of flow direction, to effectively reduce fan rotation
Resistance, lower fan rotation noise.
In view of this, an object of the present invention is to provide the fans of a kind of lower resistance, big flow or low noise.
In the first aspect of the present invention, the invention proposes a kind of fans.
According to an embodiment of the invention, the fan includes: fan body, the fan body includes multiple blades, often
A blade has opposite suction surface and pressure face；Flexible layer, the flexible layer cover the suction surface and the pressure
At least one of face.
The fan of the embodiment of the present invention sprays flexible layer in at least one side in the suction surface and pressure face of blade, soft
Property the releasable fan rotary course of layer in stream pressure, facilitate alleviate blade surface laminar boundary layer along flow direction pressure ladder
Degree reduces turbulent flow and significantly reduces frictional force, thus the noise for effectively reducing the resistance of fan rotation, lowering fan rotation.
In addition, fan according to the above embodiment of the present invention, can also have the following additional technical features:
According to an embodiment of the invention, the material for forming the flexible layer includes polysiloxanes and filler.
According to an embodiment of the invention, the polysiloxanes includes in polymethylphenylsiloxane and dimethyl silicone polymer
At least one, the filler includes at least one of aerosil, calcium sulfate, calcium carbonate and white carbon black.
According to an embodiment of the invention, the flexible layer with a thickness of 0.2~0.8mm.
According to an embodiment of the invention, the flexible layer with a thickness of 0.4~0.6mm.
In the second aspect of the present invention, the invention proposes a kind of methods for making fan.
According to an embodiment of the invention, the described method includes: providing fan body, the fan body includes multiple leaves
Piece, each blade have opposite suction surface and pressure face；In at least one of the suction surface and the pressure face
Spraying forms flexible layer on surface.
Using the production method of the embodiment of the present invention, formed in at least one side in the suction surface and pressure face of blade soft
Property layer, can get lower resistance, big flow and low noise fan, also, the production method using spray by the way of form flexibility
Layer, easy to operate, the versatile and flexible layer suitable for forming uniform thickness on the surface of complex appearance.
In addition, production method according to the above embodiment of the present invention, can also have the following additional technical features:
According to an embodiment of the invention, the raw material of the spraying include terminal hydroxy group siloxanes, silane coupling agent, crosslinking agent,
Catalyst and filler.
According to an embodiment of the invention, the terminal hydroxy group siloxanes includes hyd roxymethyl phenyl siloxanes and the poly- silicon of dihydroxy
At least one of oxygen alkane, the crosslinking agent include methyltrimethoxysilane, methyl triacetoxysilane, three butanone of methyl
At least one of oximino silane, ethyltriacetoxysilane and tetramethoxy-silicane, the catalyst include two acetic acid two
Butyl tin, the filler include at least one of aerosil, calcium sulfate, calcium carbonate and white carbon black.
According to an embodiment of the invention, the total weight of the raw material based on the spraying, the content of the terminal hydroxy group siloxanes
For 40~80w/w%, the content of the silane coupling agent is 0.1~3w/w%, and the content of the crosslinking agent is 0.1~5w/
W%, the content of the catalyst are 0.01~1w/w%, and the content of the filler is 0.01~60w/w%.
In the third aspect of the present invention, the invention proposes a kind of fan components.
According to an embodiment of the invention, the fan component includes: bracket；Motor, the motor are fixed on the bracket
On；Above-mentioned fan, the shaft assembly connection of the fan and the motor.
The fan component of the embodiment of the present invention, fan have the advantages that lower resistance, big flow and low noise, can cooperate not
Motor greater than 3000rpm revolving speed uses, to improve the pneumatic efficiency of fan component, and efficiently solves the fan component and exists
Aerodynamic noise problem under high revolving speed.It will be appreciated to those of skill in the art that above for feature described in fan and
Advantage is still applied to the fan component, and details are not described herein.
In the fourth aspect of the present invention, the invention proposes a kind of electric appliances.
According to an embodiment of the invention, the electric appliance includes above-mentioned fan component.
The electric appliance of the embodiment of the present invention, the pneumatic efficiency of fan component is higher, aerodynamic noise is smaller, to make the electric appliance
Heat dissipation effect in use is more preferable, noise is smaller.It will be appreciated to those of skill in the art that above for fan,
Feature and advantage described in fan component are still applied to the electric appliance, and details are not described herein.
In addition, electric appliance according to the above embodiment of the present invention, can also have the following additional technical features:
According to an embodiment of the invention, the electric appliance is micro-wave oven.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned aspect combination following accompanying drawings of the invention explains the description of embodiment, in which:
Fig. 1 is partial cross section's structural schematic diagram of the flabellum of the fan of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the fan body of one embodiment of the invention；
Fig. 3 is the method flow schematic diagram of the production fan of one embodiment of the invention；
Fig. 4 is the composition schematic diagram before the fan component assembling of one embodiment of the invention；
Fig. 5 is the composition schematic diagram of the electric appliance of one embodiment of the invention.
Appended drawing reference
100 fans
110 fan bodies
111 blades
A suction surface
B pressure face
120 flexible layers
200 brackets
300 motors
11 fan components
1 electric appliance
12 magnetrons
13 transformers or frequency converter
14 bottom plates
15 back plates
16 cavitys
Specific embodiment
The embodiment of the present invention is described below in detail, those skilled in the art is it will be appreciated that following example is intended for solving
The present invention is released, and is not construed as limitation of the present invention.Unless stated otherwise, it is not expressly recited in embodiment below specific
Technology or conditions, those skilled in the art can be according to common technology or conditions in the art or according to product description
It carries out.
In one aspect of the invention, the invention proposes a kind of fans.
According to an embodiment of the invention, with reference to Fig. 1~2, the fan 100 include fan body 110 (not marked in figure) and
Flexible layer 120；Wherein, fan body 100 includes multiple blades 111, and each blade 111 has opposite suction surface A and pressure
Face B；And flexible layer 120 covers at least one of suction surface A and pressure face B.
Inventor has found that for usual air-flow during flowing through fan, flow resistance is mainly by two in the course of the research
Part composition: frictional resistance, pressure drag.Wherein, frictional resistance is all viscous shearing stress of body surface in the direction of the air flow
Summation specifically refers to formula (1)~(3):
Df=∮ τ sin φ ds (3),
In formula, τ is body surface viscous shearing stress, and μ is the viscosity of air-flow, and ρ is the density of air-flow, and l is the mixing length of turbulent flow,
DfFor frictional resistance, ds is the surface infinitesimal of object, and φ is the angle of body surface normal direction and direction of flow.And blade pressure surface
The resistance formed with the pressure difference on suction surface is pressure drag, specifically refers to formula (4):
Dp=∮ pcos φ ds (4),
In formula, p is body surface pressure, DpFor frictional resistance, ds is the surface infinitesimal of object, and φ is body surface normal direction and comes
Flow the angle in direction.
So turbulence noise of the fan in rotary course is also one of Main Noise Sources of fan, in order to reduce electric appliance
Main noise, inhibit the development of turbulent flow and reduce turbulence intensity to be a kind of effective noise reduction measure.The present inventor, in wind
The rigid surface of fan leaf 111 forms flexible layer 120, and surface flexible has biggish damping, can absorb and buffers turbulence edge
The larger pulsating force that the disturbance of interlayer near wall region generates wall surface, to keep process decrease, the frequency of generation of disturbance lower.And
The size of forcing frequency can reflect the power of turbulence energy, and the reduction of frequency also implies that the development of turbulent flow is suppressed,
Correspondingly the intensity of turbulent flow is also weakened, and therefore, flexible layer can efficiently control turbulence noise.
Also, flexible layer 120 is also deformed by airflow function in fan rotary course, therefore the pressure of wall surface is released
It puts, helps to alleviate boundary layer along the barometric gradient of flow direction.And the reduction of adverse pressure gradient, boundary layer thickness are thinned, wake boundary
Layer turns to twist and move back to turbulent boundary layer, can all make the turbulent flow region of blade surface be compressed, answer so that viscosity be made to cut
The higher turbulent flow of power changes to laminar flow, and then reduces skin friction drag also significantly.
According to an embodiment of the invention, the material for forming flexible layer 120 may include polysiloxanes and filler, in this way, using
Surface toughness is higher while the silicone resin of filler enhancing has flexible surface, to make fan 100 with lower resistance and low
While noise, the surface strength of blade 111 will not be also reduced.In some embodiments of the invention, polysiloxanes may include
At least one of polymethylphenylsiloxane and dimethyl silicone polymer, and filler may include aerosil, sulfuric acid
At least one of calcium, calcium carbonate and white carbon black, in this way, being had using the above-mentioned silicone resin that the filler of mentioned kind enhances higher
Surface flexible and surface toughness, and the cost of manufacture of flexible layer 120 is lower, so that the manufacture of fan 100 will not be dramatically increased
Cost.
According to an embodiment of the invention, the thickness of flexible layer 120 can be 0.2~0.8mm, in this way, compared to not being coated with
The fan body 110 of flexible layer, using the flexible layer 200 of above-mentioned thickness can make the acoustic power level of fan 100 is lower, drag reducing efficiency more
Height, if also, the thickness of flexible layer 120 continue to increase to 1mm or more, the pressure drag in the flow resistance of blade 111 is instead
It can be increased, and cause that the acoustic power level of fan 100 is higher, drag reducing efficiency is lower, so the flexible layer 120 of selection suitable thickness
It is also another technical point of the invention.In some specific examples, the thickness of flexible layer 120 can be 0.4~0.6mm, in this way,
Fan 100 can be made 3000rpm revolving speed acoustic power level below is further lower, drag reduction using the flexible layer 200 of above-mentioned thickness
Rate is further higher, i.e. the lower resistance of fan 100, low noise better effect.
According to an embodiment of the invention, the material for forming blade 111 is not particularly limited, those skilled in the art can root
It is required according to the specific service performance of fan 10 0 and practical service environment is correspondingly selected.In some embodiments of the present invention
In, blade 111 can be to be formed by polypropylene (PP) material, in this way, density is small, rigidity is big, be unlikely to deform and surface is smooth
Blade, can make fan 100 be suitable for use in the small household appliances such as micro-wave oven.
According to an embodiment of the invention, the concrete shape of blade 111 is not particularly limited, specific such as arc plate uniform thickness
The blade of degree or the blade of non-equal thickness, etc., those skilled in the art can the progress of the air flow demand according to needed for fan 100
It correspondingly designs, details are not described herein.According to an embodiment of the invention, the specific number of blade 111 is not also particularly limited,
Specifically such as 3,4,5,6 or 8, those skilled in the art can the progress of the air flow demand according to needed for fan 100
It correspondingly designs, details are not described herein.
In conclusion according to an embodiment of the invention, the invention proposes a kind of fan, the suction surface and pressure of blade
Flexible layer is sprayed at least one side in face, the stream pressure in the releasable fan rotary course of flexible layer helps to alleviate leaf
Piece laminar surface flow boundary layer reduces turbulent flow and significantly reduces frictional force, to effectively reduce fan along the barometric gradient of flow direction
The resistance of rotation, the noise for lowering fan rotation.
In another aspect of the invention, the invention proposes a kind of methods for making fan.Implementation according to the present invention
Example, with reference to Fig. 3, which includes:
S100: fan body is provided.
In this step, fan body 110 is provided, with reference to Fig. 2, fan body 110 includes multiple blades 111, Mei Geye
Piece 111 has opposite suction surface A and pressure face B.According to an embodiment of the invention, forming the specific method of fan body 110
It is not particularly limited, those skilled in the art can correspondingly be selected according to the specific material of fan body 110, concrete example
Such as form the fan body 110, etc. of complex contour by injection molding for raw material with polypropylene (PP), details are not described herein.
S200: spraying forms flexible layer at least one surface in suction surface and pressure face.
In this step, at least one surface in the suction surface A and pressure face B of the blade 111 of fan body 110
Spraying forms flexible layer 120, in this way, can get the fan 100 of lower resistance, big flow and low noise.
According to an embodiment of the invention, the raw material of spraying may include terminal hydroxy group siloxanes, silane coupling agent, crosslinking agent, urge
Agent and filler, in this way, the raw material of spraying to be first equably sprayed on to the part of the surface of blade 111, then polymerization reaction forms thickness
Uniform flexible layer 120.
In some embodiments of the invention, terminal hydroxy group siloxanes may include that hyd roxymethyl phenyl siloxanes and dihydroxy are poly-
At least one of siloxanes, crosslinking agent may include methyltrimethoxysilane, methyl triacetoxysilane, three butanone of methyl
At least one of oximino silane, ethyltriacetoxysilane and tetramethoxy-silicane, catalyst may include two acetic acid, two fourth
Ji Xi, filler may include at least one of aerosil, calcium sulfate, calcium carbonate and white carbon black, in this way, using above-mentioned
Specific kind of spraying raw material quickly, efficiently, equably can be sprayed to form flexible layer 120, also, be sprayed on the surface of blade 111
The method of painting is easy to operate, versatile and be suitable for forming the flexible layer of uniform thickness on 111 surface of blade of complex appearance
120。
According to an embodiment of the invention, the total weight of the raw material based on spraying, the content of terminal hydroxy group siloxanes can for 40~
80w/w%, the content of silane coupling agent can be 0.1~3w/w%, and the content of crosslinking agent can be 0.1~5w/w%, catalyst
Content can be 0.01~1w/w%, and the content of filler can be 0.01~60w/w%, in this way, using the spraying raw material of aforementioned proportion,
It can form that surface flexible is more preferable, the higher flexible layer 120 of toughness.
In conclusion according to an embodiment of the invention, the invention proposes a kind of production method, blade suction surface and
Flexible layer is formed at least one side in pressure face, can get the fan of lower resistance, big flow and low noise, also, the production
Method forms flexible layer by the way of spraying, easy to operate, versatile and be suitable for being formed uniformly on the surface of complex appearance
The flexible layer of thickness.
In another aspect of the invention, the invention proposes a kind of fan components.
According to an embodiment of the invention, fan component 11 includes bracket 200, motor 300 and above-mentioned fan with reference to Fig. 4
100, wherein motor 300 is fixed on bracket 200, and the shaft assembly connection of fan 100 and motor 300.It needs to illustrate
It is that fan component 11 may also include other compositions, specifically for example other than including bracket 200, motor 300 and fan 100
Collector etc., those skilled in the art can require correspondingly to be designed and supplemented according to the concrete function of the fan component 11,
Details are not described herein.
In conclusion according to an embodiment of the invention, fan has low-resistance the invention proposes a kind of fan component
The advantages of power, big flow and low noise, can cooperate the motor use no more than 3000rpm revolving speed, to improve fan component
Pneumatic efficiency, and efficiently solve the aerodynamic noise problem of the fan component at high speed.Those skilled in the art can manage
Solution, above for feature and advantage described in fan, is still applied to the fan component, details are not described herein.
In another aspect of the invention, the invention proposes a kind of electric appliances.According to an embodiment of the invention, with reference to Fig. 5,
Electric appliance 1 includes above-mentioned fan component 11.According to an embodiment of the invention, the concrete type of the electric appliance 11 is not limited particularly
System, such as micro-wave oven etc., those skilled in the art can carry out correspondingly design electricity according to the practical service environment of fan component 11
The type of device 1, details are not described herein.
It should be noted that the electric appliance 1 further includes other necessary the Nomenclature Composition and Structure of Complexes other than fan component 11, with micro-
For wave furnace, with reference to Fig. 5, it may also include magnetron 12, transformer or frequency converter 13, bottom plate 14, back plate 15 and cavity 16 etc.,
In, bottom plate 14 is linked with back plate 15, and cavity 16 and transformer or frequency converter 13 are fixed on bottom plate 14, and magnetron 12 is fixed on chamber
On body 16, fan component 11 is fixed in back plate 15, etc., those skilled in the art can according to the concrete type of the electric appliance 1 and
Actual functional capability is correspondingly designed and is supplemented, and details are not described herein.
In conclusion according to an embodiment of the invention, the invention proposes a kind of electric appliance, the pneumatic efficiency of fan component
It is higher, aerodynamic noise is smaller, to make that the heat dissipation effect of the electric appliance in use is more preferable, noise is smaller.Art technology
Personnel are still applied to the electric appliance, herein, it is understood that above for feature and advantage described in fan, fan component
It repeats no more.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only descriptive
, without limiting the invention in any way.
Embodiment 1
In this embodiment, the raw material of spraying is prepared.Specifically, weighing the hyd roxymethyl phenyl siloxanes of 60 parts by weight, 3
The coupling agent KH550 of parts by weight, the crosslinking agent methyltrimethoxysilane of 0.5 parts by weight, the filler titanium dioxide of 16.2 parts by weight
Silica aerogel, and the high-speed stirred 15min that revolving speed is 1000r/min is carried out, two acetic acid of catalyst of 0.3 parts by weight is added later
Dibutyl tin continues to stir 5min.
Embodiment 2
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In in this embodiment, weighing the polysiloxanediols of 60 parts by weight, the coupling agent KH570 of 2 parts by weight, 0.8 parts by weight
Two acetic acid two of catalyst of 0.2 parts by weight is added in the filler calcium sulfate of crosslinking agent methyltrimethoxysilane, 37 parts by weight later
Butyl tin.
Embodiment 3
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In, in this embodiment, the friendship of the polysiloxanediol, the coupling agent KH560,1 parts by weight of 2 parts by weight of 50 parts by weight of weighing
The filler-calcium carbonate for joining agent methyl triacetoxysilane, 46.8 parts by weight, is added two acetic acid of catalyst of 0.2 parts by weight later
Dibutyl tin.
Embodiment 4
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In, in this embodiment, the friendship of the polysiloxanediol, the coupling agent KH560,2 parts by weight of 2 parts by weight of 40 parts by weight of weighing
The filler sulphur calcium carbonate for joining agent methyl tributanoximo silane, 55.9 parts by weight, is added two vinegar of catalyst of 0.1 parts by weight later
Sour dibutyl tin.
Embodiment 5
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In, in this embodiment, the weighing polysiloxanediol of 50 parts by weight, the coupling agent LD602 of 2 parts by weight, 2 parts by weight compounding
Crosslinking agent methyl triacetoxysilane and ethyltriacetoxysilane, 45.9 parts by weight filler white carbon black, Zhi Houjia
Enter the catalyst dibutyltin diacetate of 0.1 parts by weight.
Embodiment 6
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In, in this embodiment, the weighing polysiloxanediol of 50 parts by weight, the coupling agent LD717 of 1 parts by weight, 1 parts by weight compounding
Crosslinking agent methyl triacetoxysilane and tetramethoxy-silicane, 47.9 parts by weight filler-calcium carbonate, 0.1 weight is added later
Measure the catalyst dibutyltin diacetate of part.
Embodiment 7
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In, in this embodiment, the friendship of the polysiloxanediol, the coupling agent LD602,1 parts by weight of 2 parts by weight of 60 parts by weight of weighing
The filler calcium sulfate for joining agent tetramethoxy-silicane, 36.9 parts by weight, is added the two acetic acid dibutyl of catalyst of 0.1 parts by weight later
Tin.
Embodiment 8
In this embodiment, according to method and condition substantially the same manner as Example 1, the raw material of spraying is prepared.Difference exists
In, in this embodiment, weigh 55 parts by weight polysiloxanediol, 2 parts by weight compounding coupling agent KH550 and KH560,
The filler calcium sulfate of the crosslinking agent tetramethoxy-silicanes of 1 parts by weight, 41.9 parts by weight, is added the catalyst of 0.1 parts by weight later
Dibutyltin diacetate.
Embodiment 9
In this embodiment, the spraying raw material that embodiment 1 is prepared is sprayed on to the suction of the blade of fan body respectively immediately
Power face, pressure face and two-sided, then the drag reducing efficiency and acoustic power level of fan are tested with fan body as a comparison.
Wherein, the test method of drag reducing efficiency is led under identical wind speed specifically, the fan of test is fixed in wind-tunnel
Cross the resistance F that three component sensing testing device devices measure fan, it is assumed that the resistance that fan body is measured is Fxo, is sprayed flexible
The resistance that the fan of layer is measured is Fx1, then drag reducing efficiency η=(Fxo-Fx1)/Fxo*100%.
The test result of the embodiment is as shown in table 1, under the revolving speed of 2000rmp, same thickness, different spraying position
3 kinds of fans with flexible layer are all higher than the drag reducing efficiency of fan body, noise is smaller, wherein the wind of pressure face spraying flexible layer
The drag-reduction effect of fan is best, and the noise reduction effect that suction surface is coated with the fan of flexible layer is more preferable.
Table 1
Embodiment 10
In this embodiment, the spraying raw material of embodiment 1 is sprayed to the flexible layer of different-thickness respectively, and tests different turn
The drag reducing efficiency and acoustic power level of fan under speed.
The test result of the embodiment is as shown in table 2 and table 3, it is possible to find thickness 0.2~0.8mm flexible layer to fan
Drag-reduction effect and noise reduction effect it is all fine, play minus effect instead with a thickness of drag reduction and noise reduction of the flexible layer of 1mm to fan.
Table 2
Table 3
It summarizes
Integrated embodiment 1~10 can obtain, production method proposed by the invention, in the suction surface and pressure face of blade
At least one side on form flexible layer, can get lower resistance, big flow and low noise fan, also, the production method use
The mode of spraying forms flexible layer, easy to operate, versatile and be suitable for forming the soft of uniform thickness on the surface of complex appearance
Property layer.Also, using the flexible layer 200 of 2~8mm thickness that can make, the acoustic power level of fan 100 is lower, drag reducing efficiency is higher.
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 ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the description of the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ",
Terms such as " fixations " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside a element.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in the present invention is understood according to concrete condition.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of fan characterized by comprising
Fan body, the fan body include multiple blades, and each blade has opposite suction surface and pressure face；
Flexible layer, the flexible layer cover at least one of the suction surface and the pressure face.
2. fan according to claim 1, which is characterized in that the material for forming the flexible layer includes polysiloxanes and fills out
Material.
3. fan according to claim 2, which is characterized in that the polysiloxanes includes polymethylphenylsiloxane and gathers
At least one of dimethyl siloxane, the filler include in aerosil, calcium sulfate, calcium carbonate and white carbon black
It is at least one.
4. fan according to claim 1, which is characterized in that the flexible layer with a thickness of 0.2~0.8mm, preferably
0.4~0.6mm.
5. a kind of method for making fan characterized by comprising
Fan body is provided, the fan body includes multiple blades, and each blade has opposite suction surface and pressure
Face；
Spraying forms flexible layer at least one surface in the suction surface and the pressure face.
6. according to the method described in claim 5, it is characterized in that, the raw material of the spraying includes terminal hydroxy group siloxanes, silane
Coupling agent, crosslinking agent, catalyst and filler.
7. according to the method described in claim 6, it is characterized in that,
The terminal hydroxy group siloxanes includes at least one of hyd roxymethyl phenyl siloxanes and polysiloxanediol,
The crosslinking agent includes methyltrimethoxysilane, methyl triacetoxysilane, methyl tributanoximo silane, ethyl
At least one of triacetoxysilane and tetramethoxy-silicane,
The catalyst includes dibutyltin diacetate,
The filler includes at least one of aerosil, calcium sulfate, calcium carbonate and white carbon black.
8. according to the method described in claim 6, it is characterized in that, the total weight of the raw material based on the spraying,
The content of the terminal hydroxy group siloxanes is 40~80w/w%,
The content of the silane coupling agent is 0.1~3w/w%,
The content of the crosslinking agent is 0.1~5w/w%,
The content of the catalyst is 0.01~1w/w%,
The content of the filler is 0.01~60w/w%.
9. a kind of fan component characterized by comprising
Bracket；
Motor, the motor are fixed on the bracket；
Fan according to any one of claims 1 to 4, the shaft assembly connection of the fan and the motor.
10. a kind of electric appliance, which is characterized in that including fan component as claimed in claim 9.
11. electric appliance according to claim 10, which is characterized in that the electric appliance is micro-wave oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796877.4A CN109026836B (en) | 2018-07-19 | 2018-07-19 | Fan, manufacturing method thereof, fan assembly and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796877.4A CN109026836B (en) | 2018-07-19 | 2018-07-19 | Fan, manufacturing method thereof, fan assembly and electric appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026836A true CN109026836A (en) | 2018-12-18 |
| CN109026836B CN109026836B (en) | 2021-01-26 |
Family
ID=64644249
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810796877.4A Active CN109026836B (en) | 2018-07-19 | 2018-07-19 | Fan, manufacturing method thereof, fan assembly and electric appliance |
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| Country | Link |
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| CN (1) | CN109026836B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111191A (en) * | 2021-03-23 | 2022-09-27 | 中国航发商用航空发动机有限责任公司 | Fan blade and aeroengine |
| CN115111191B (en) * | 2021-03-23 | 2024-05-14 | 中国航发商用航空发动机有限责任公司 | Fan blade and aeroengine |
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| JPH0828497A (en) * | 1994-07-11 | 1996-01-30 | Yutani Heavy Ind Ltd | Flow noise lowering structure for cooling fan |
| CN203239644U (en) * | 2013-04-19 | 2013-10-16 | 深圳市研派科技有限公司 | Low-noise fan device |
| CN206592318U (en) * | 2017-03-31 | 2017-10-27 | 广东美的厨房电器制造有限公司 | Aerofoil fan and micro-wave oven |
| CN107488435A (en) * | 2017-09-18 | 2017-12-19 | 广西合山东来化工科技有限公司 | A kind of high resiliency one-component silicone sealant and preparation method thereof |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828497A (en) * | 1994-07-11 | 1996-01-30 | Yutani Heavy Ind Ltd | Flow noise lowering structure for cooling fan |
| CN203239644U (en) * | 2013-04-19 | 2013-10-16 | 深圳市研派科技有限公司 | Low-noise fan device |
| CN206592318U (en) * | 2017-03-31 | 2017-10-27 | 广东美的厨房电器制造有限公司 | Aerofoil fan and micro-wave oven |
| CN107488435A (en) * | 2017-09-18 | 2017-12-19 | 广西合山东来化工科技有限公司 | A kind of high resiliency one-component silicone sealant and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115111191A (en) * | 2021-03-23 | 2022-09-27 | 中国航发商用航空发动机有限责任公司 | Fan blade and aeroengine |
| CN115111191B (en) * | 2021-03-23 | 2024-05-14 | 中国航发商用航空发动机有限责任公司 | Fan blade and aeroengine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026836B (en) | 2021-01-26 |
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