CN106837832A - A kind of new portable electric fan - Google Patents

A kind of new portable electric fan Download PDF

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Publication number
CN106837832A
CN106837832A CN201710046179.8A CN201710046179A CN106837832A CN 106837832 A CN106837832 A CN 106837832A CN 201710046179 A CN201710046179 A CN 201710046179A CN 106837832 A CN106837832 A CN 106837832A
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CN
China
Prior art keywords
face
air
blade
electric fan
supercharging
Prior art date
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Granted
Application number
CN201710046179.8A
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Chinese (zh)
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CN106837832B (en
Inventor
赖均勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shunde Foshan New Ridge Electromechanical Science And Technology Co Ltd
Original Assignee
Shunde Foshan New Ridge Electromechanical Science And Technology Co Ltd
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Priority to CN201710046179.8A priority Critical patent/CN106837832B/en
Publication of CN106837832A publication Critical patent/CN106837832A/en
Application granted granted Critical
Publication of CN106837832B publication Critical patent/CN106837832B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38Blades
    • F04D29/388Blades characterised by construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/54Fluid-guiding means, e.g. diffusers
    • F04D29/541Specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663Sound attenuation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

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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 present invention discloses a kind of new portable electric fan,Including housing,Housing is provided with air outlet and air inlet,Fan blade is installed between air outlet and air inlet,Multiple blades that fan blade includes connection body and is arranged on connection body,Grid disk is provided with air outlet,Grid Pan You centers are extended with multiple grille strips for being connected to housing to surrounding in scattering formula,The circumferencial direction for stating air inlet is provided with air intake circular arc side wall toward housing cavity,Circumferentially direction offers multiple grooves for the inner side of air intake circular arc side wall,Each blade is provided with end face windward and leeward end face,On each blade supercharging basin is provided near blade profile edge,Supercharging basin makes end face windward constitute supercharging concave surface,And leeward end face is formed supercharging convex surface,Each grille strip helically distorts extension,And the thickness of grille strip is in from inside to outside gradually to increase shape,By the internal structure to portable electric fan,Fan blade and grid are optimized and improved,Improve the air-out efficiency of electric fan,Lower energy resource consumption.

Description

A kind of new portable electric fan
Technical field
The present invention relates to electric fan field, especially a kind of new portable electric fan.
Background technology
Existing portable electric fan commonly uses motor driving shaft stream fan blade, is switched to by the power for being input into motor Air is circulated, and so as to carry out forced-convection heat transfer, under the same motor power output, axial-flow leaf coordinates with air-flow Quality, Energy Efficiency Ratio, noise to electric fan etc. have material impact.
Existing axial-flow leaf, its basic structure includes circular air inlet and gas outlet and distribution with pivot Between circular air inlet and gas outlet and several blades for being arranged radially of side, driven by motor and rotated, air is from leaf The leading edge of piece is flowed into, and is flowed out by the trailing edge of blade after being boosted by aerofoil, but gas under entering the gas angle of attack in centrifugal action and greatly Stream impact fan blade leading edge caused by gas boundary layer separate and produce vortex and form eddy current crack, air outflow blade when Spread in dispersion shape, so as to cause the air-flow velocity for discharging fan blade to reduce, and the distance of flowing is shorter, and air-flow can not be directed to small Area carries out heat convection, reduces the Energy Efficiency Ratio of electric fan, largely effects on the impression that people are used electric fan.
In terms of style grid, its topmost function is protective action, it is to avoid fan blade collides causes electric fan to damage, Again people can be avoided from touching fan blade by mistake simultaneously and cause security incident;Except this thinks, air outlet grate does not have for the efficiency of electric fan Other effects, more particularly to not reasonable air outlet grate can stop air flow, upset the flow direction of air, lower Air-out efficiency.
The content of the invention
It is an object of the invention to solve above-mentioned the deficiencies in the prior art, and provide a kind of one kind simple and reasonable for structure New portable electric fan, can solution to have decided electric fan air-out efficiency low, the problems such as waste the energy.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of new portable electric fan, including housing, housing is provided with air outlet and air inlet, between air outlet and air inlet Fan blade is installed, multiple blades that fan blade includes connection body and is arranged on connection body are provided with grid disk on air outlet, Grid Pan You centers are extended with multiple grille strips for being connected to housing to surrounding in scattering formula, and the circumferencial direction of the air inlet is past Housing cavity is provided with air intake circular arc side wall, and circumferentially direction offers multiple grooves for the inner side of air intake circular arc side wall, increases recessed Slot structure can break up the air-flow near fan blade neighboring so that air-flow is able to pass through fan blade front end face and rear end face Juncture area, reduces air-flow and is formed about the intensity of vortex in fan blade neighboring, and then reduce vortex and collided with housing and right The disturbance of adjacent blades, and then lower the overall noise levels of fan blade, while the tolerance of air-flow can be increased.
In addition, air intake circular arc side wall is not limited solely to be arranged on the housing of the circumferencial direction of air inlet, air outlet Circumferencial direction installs air intake circular arc side wall and is equally applicable to the technical program toward housing cavity.
The air intake circular arc side wall is connected with casing integrated with body, is easy to the production of air intake circular arc side wall, reduce install when Between.
Each blade is provided with end face windward and leeward end face, and supercharging is provided near blade profile edge on each blade Basin, supercharging basin makes end face windward constitute supercharging concave surface, and leeward end face is formed supercharging convex surface, the electric fan blade of the structure In the running, air windward on end face is pressurized, and the air of compression flows toward the center position of supercharging concave surface, recessed closer to being pressurized The center in face, the pressure of air is bigger, when the pressure of air is increased, when air leaves fan blade, accelerates the flowing velocity of air, The area of air diverging flow can be reduced simultaneously, make air formed quickly, the air-flow concentrated, raising fan blade forced-convection heat transfer Efficiency.
Each grille strip helically distorts extension, and the thickness of grille strip is in from inside to outside gradually to increase shape, the structure The airflow strikes that grille strip is promoted with fan blade, improve the speed of air-flow outflow, electric fan is faster taken away heat, lift use feeling Receive.
When electric fan works, fan blade turns clockwise, and drives air to be flowed toward air outlet direction from air inlet, and make to leave The air of fan blade spirally flows through grille strip, and the hand of spiral flowed through due to the hand of spiral and the air of grille strip is conversely, when sky With the windward side of grille strip in face of hitting when air-flow goes out, grille strip cuts the air of flowing originally, changes air-flow direction Become, when air changes flow direction, speed air flow increases, make electric fan under fan blade same rotational speed, improve and force right The speed of heat exchange is flowed, makes thing quickening cooling of being lowered the temperature.
The air inlet is extended with electric machine support, on electric machine support correspondence air intake circular arc side wall circumferentially direction offer it is many Individual air intake flow-guiding mouth, air intake flow-guiding mouth is easy to air to enter air inlet, makes air even into fan blade.
The groove is arc, triangle, square or other polygons, and the shape of groove is not limited to one kind, and other are more Side shape can be such that the air-flow in vortex is clashed into groove in rotation process, break up air and avoid the formation of vortex, push away fan blade increase The air quantity for entering.
Transition end face is provided between the adjacent groove, transition end face is connected with electric machine support, it is to avoid reduce air intake surface Product, improves the Energy Efficiency Ratio of electric fan.
Each grille strip includes outer face and is arranged on the both sides end face of outer face both sides, and the width of outer face is by grid disk Extend in shape is gradually increased toward housing direction, make the overall appearance of grille strip more attractive in appearance, while can guarantee that grille strip and housing There is enough intensity to connect, make grille strip there is enough area to be clashed with air flow contacts, air flow is raised speed.And have enough Space and air clash and cut air.
The rotation direction of the fan blade is with the hand of spiral of grille strip conversely, making the side end face of wherein side constitute windward side Face, the side end face of opposite side constitutes leeward end face, and the angle α between end face and outer face is more than leeward end face and outer end windward Angle β between face, makes air-flow more preferably with windward side in face of hitting, and increases the speed of air-flow outflow, improves the air quantity of electric fan.
Supercharging concave surface is arc, and the supercharging concave surface of arc is conducive to the flowing and compression of air, fan blade is being ensured rotating speed The influence of windage is reduced simultaneously, the wind for reducing fan blade is made an uproar, air is formed the air-flow group of stabilization.
Supercharging concave surface is connected with end face windward by arc transition, it is ensured that the air flow on fan blade is smooth, reduces windage Made an uproar with wind.
The grille strip outwardly arches upward with respect to air outlet, and reserving enough spaces makes to be carried by the air rotation of fan blade Speed goes out, and the speed of air outflow is accelerated in knock-on process in face of hitting with the windward side of grille strip when air outlet is flowed out.
The extending end of grille strip is connected with casing integrated with body, is easy to the production of grille strip, reduces the time installed.
Multiple supercharging basins are provided near blade profile edge on described each blade, according to the actually used situation of electric fan Plus-minus supercharging basin quantity, makes electric fan reach optimal air-out effect.
The supercharging basin is connected with blade integral, is easy to supercharging basin to produce, and reduces the time of production.
The beneficial effects of the invention are as follows:
1. a kind of new portable electric fan of the invention, simple structure is convenient for production, and increasing groove structure can make outside fan blade Air-flow near circumferential edges is broken up so that air-flow is able to pass through the juncture area of fan blade front end face and rear end face, reduces gas Flow and be formed about the intensity of vortex in fan blade neighboring, and then reduce vortex and housing collision and the disturbance to adjacent blades, And then the overall noise levels of attenuating fan blade, while the tolerance of air-flow can be increased.
2. the airflow strikes that the grille strip of the structure is promoted with fan blade, improve the speed of air-flow outflow, make electric fan in wind Under leaf same rotational speed, the speed of forced-convection heat transfer is improved, make thing quickening cooling of being lowered the temperature, lift use feeling.
3. in the running, the air on end face is pressurized electric fan blade windward, the center of the past supercharging concave surface of air of compression Direction is flowed, and closer to the center of supercharging concave surface, the pressure of air is bigger, when the pressure of air is increased, when air leaves wind Leaf, accelerates the flowing velocity of air, while the area of air diverging flow can be reduced, make air formed quickly, the air-flow of concentration, Improve the efficiency of fan blade forced-convection heat transfer.
Brief description of the drawings
Fig. 1 is decomposition texture schematic diagram of the invention.
Fig. 2 is blade structure schematic diagram one of the invention.
Fig. 3 is housing partial structural diagram one of the invention.
Fig. 4 is mplifying structure schematic diagram at A in Fig. 3.
Fig. 5 is mplifying structure schematic diagram at B in Fig. 4.
Fig. 6 is blade structure schematic diagram two of the invention.
Fig. 7 is mplifying structure schematic diagram at C in Fig. 5.
Fig. 8 is mplifying structure schematic diagram at D in Fig. 1.
Fig. 9 is housing partial structural diagram two of the invention.
Figure 10 is mplifying structure schematic diagram at E in Fig. 9.
Figure 11 is casing cross-section structural representation of the invention.
Figure 12 is amplification assumption diagram at F in Figure 11.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples:
As shown in Figures 1 to 12, a kind of new portable electric fan, including housing 1, housing 1 is provided with air outlet 2 and air inlet 3, fan blade 4, the multiple that fan blade 4 includes connection body 5 and is arranged on connection body 5 are installed between air outlet 2 and air inlet 3 Blade 6, is provided with grid disk 7 on air outlet 2, grid disk 7 is extended with multiple and is connected to housing 1 to surrounding from center in scattering formula Grille strip 8, the circumferencial direction of the air inlet 4 is provided with air intake circular arc side wall 9 toward the inner chamber of housing 1, air intake circular arc side wall 9 Circumferentially direction offers multiple grooves 10 for inner side, and increasing the structure of groove 10 can break up the air-flow near the neighboring of fan blade 4, So that air-flow is able to pass through the juncture area of the front end face of fan blade 4 and rear end face, reduction air-flow is near the neighboring of fan blade 4 The intensity of vortex is formed, and then reduces vortex and housing collision and the disturbance to adjacent blades, and then lower the entirety of fan blade 4 and made an uproar Sound level, while the tolerance of air-flow can be increased.
In addition, air intake circular arc side wall 9 is not limited solely to be arranged on the housing 1 of the circumferencial direction of air inlet 3, air outlet 2 circumferencial direction installs air intake circular arc side wall 9 and is equally applicable to the technical program toward the inner chamber of housing 1.
The air intake circular arc side wall 9 is connected with the integral type of housing 1, is easy to the production of air intake circular arc side wall 9, reduces what is installed Time.
Described each blade 6 is provided with end face 11 windward and leeward end face 12, near the profile side of blade 6 on each blade 6 Edge is provided with supercharging basin 13, and supercharging basin 13 makes end face 11 windward constitute supercharging concave surface 1101, and leeward end face 12 is formed supercharging Convex surface 1201, in the running, the air on end face 11 is pressurized the electric fan blade 4 of the structure windward, the past supercharging of air of compression The center position flowing of concave surface 1101, closer to the center of supercharging concave surface 1101, the pressure of air is bigger, is increasing the pressure of air During power, when air leaves fan blade 4, accelerate the flowing velocity of air, while the area of air diverging flow can be reduced, make air shape Into air-flow that is quick, concentrating, the efficiency of fan blade semi-finals heat convection is improved.
Described each grille strip 8 helically distorts extension, and the thickness of grille strip 8 is in from inside to outside gradually to increase shape, should The airflow strikes that the grille strip 8 of structure is promoted with fan blade 4, improve the speed of air-flow outflow, electric fan is faster taken away heat, carry Rise use feeling.
When electric fan works, fan blade 4 turns clockwise, and drives air to be flowed toward the direction of air outlet 2 from air inlet 3, and make The air for leaving fan blade 4 spirally flows through grille strip 8, due to the hand of spiral phase that the hand of spiral and the air of grille strip 8 flow through Instead, the end face windward 11 when air flows out with grille strip 8 clashes, and grille strip 8 cuts the air of flowing originally, makes air flow Direction changes, and when air changes flow direction, speed air flow increases, make electric fan in the same rotational speed of fan blade 4 Under, the speed of forced-convection heat transfer is improved, make thing quickening cooling of being lowered the temperature.
The air inlet 3 is extended with electric machine support 14, and correspondence air intake circular arc side wall 9 circumferentially open by direction on electric machine support 3 It is provided with multiple air intake flow-guiding mouths 15, air intake flow-guiding mouth 15 is easy to air to enter air inlet 3, makes air even into fan blade 4.
The groove 10 is arc, triangle, square or other polygons, and the shape of groove 10 is not limited to one Kind, other polygons can be such that the air-flow in vortex is clashed into groove 10 in rotation process, break up air and avoid the formation of vortex, make Fan blade 4 increases the air quantity of propulsion.
Transition end face 16 is provided between the adjacent groove 10, transition end face 16 is connected with electric machine support 14, keeps away Exempt to reduce incoming air area, improve the Energy Efficiency Ratio of electric fan.
Each grille strip 8 includes outer face 801 and is arranged on the both sides end face 802 of the both sides of outer face 801, outer face 801 Width extended in gradually increasing shape from grid disk 7 toward the direction of housing 1, make the overall appearance of grille strip 8 more attractive in appearance, while energy Ensure that grille strip 8 has enough intensity to be connected with housing 1, make grille strip 8 there is enough area to be clashed with air flow contacts, make air point Stream speed-raising.And there is enough spaces and air to clash and cut air.
The hand of spiral of the rotation direction of the fan blade 4 and grille strip 8 is conversely, constitute the side end face 802 of wherein side End face 802a windward, the side end face 802 of opposite side constitutes leeward end face 802b, and windward between end face 802a and outer face 801 Angle α more than angle β between leeward end face 802b and outer face 801, air-flow is more preferably clashed with end face 11 windward, increase The speed of air-flow outflow, improves the air quantity of electric fan.
The supercharging concave surface 1101 is arc, and the supercharging concave surface 1101 of arc is conducive to the flowing and compression of air, makes wind Leaf is ensureing rotating speed while reducing the influence of windage, and the wind for reducing fan blade 4 is made an uproar, and air is formed the air-flow group of stabilization.
The supercharging concave surface 1101 is connected with end face 11 windward by the transition of circular arc 17, it is ensured that the air flow on fan blade 4 It is smooth, reduce windage and wind is made an uproar.
Multiple supercharging basins 13 are provided near the contour edge of blade 6 on described each blade 6, according to the reality of electric fan The service condition plus-minus supercharging quantity of basin 13, makes electric fan reach optimal air-out and imitates.
The supercharging basin 13 is connected with the integral type of blade 6, is easy to supercharging basin to produce, and reduces the time of production.
The grille strip 8 outwardly arches upward with respect to air outlet 2, and reserving enough spaces makes to be revolved by the air of fan blade 4 Turn to raise speed out, clashed with the end face windward 11 of grille strip 8 when air outlet 2 is flowed out, air outflow is accelerated in knock-on process Speed.
The extending end of grille strip 8 is connected with the integral type of housing 1, is easy to the production of grille strip 8, reduces the time installed.
Particular embodiments described above, only preferred embodiments of the present invention, such as according to the present patent application patent The equivalent arrangements that scope is done, should be technology of the invention and are covered.

Claims (9)

1. a kind of new portable electric fan, including housing(1), housing(1)It is provided with air outlet(2)And air inlet(3), air-out Mouthful(2)And air inlet(3)Between fan blade is installed(4), fan blade(4)Including connection body(5)Be arranged on connection body(5)On Multiple blades(6), air outlet(2)On be provided with grid disk(7), grid disk(7)It is extended with scattering formula from center to surrounding Multiple is connected to housing(1)Grille strip(8), it is characterised in that:The air inlet(4)Circumferencial direction toward housing(1)Inner chamber It is provided with air intake circular arc side wall(9), air intake circular arc side wall(9)Circumferentially direction offers multiple grooves for inner side(10);
Described each blade(6)It is provided with end face windward(11)With leeward end face(12), each blade(6)It is upper to be close to blade(6) Contour edge is provided with supercharging basin(13), it is pressurized basin(13)Make end face windward(11)Constitute supercharging concave surface(1101), and make leeward End face(12)Form supercharging convex surface(1201);
Described each grille strip(8)Helically distortion extends, and grille strip(8)Thickness from inside to outside in gradually increasing shape.
2. a kind of new portable electric fan according to right will go 1, it is characterised in that:The air inlet(3)It is extended with Electric machine support(14), electric machine support(3)Upper correspondence air intake circular arc side wall(9)Circumferentially direction offers multiple air intake flow-guiding mouths (15).
3. a kind of new portable electric fan according to right will go 1, it is characterised in that:The groove(10)It is arc Shape, triangle, square or other polygons.
4. a kind of new portable electric fan according to right will go 2, it is characterised in that:The adjacent groove (10)Between be provided with transition end face(16), transition end face(16)With electric machine support(14)Connection.
5. a kind of new portable electric fan according to right will go 1, it is characterised in that:Each grille strip(8)Including outer End face(801)Be arranged on outer face(801)The both sides end face of both sides(802), outer face(801)Width by grid disk(7) Toward housing(1)It is in gradually to increase shape that direction extends.
6. a kind of new portable electric fan according to right will go 3, it is characterised in that:The fan blade(4)Rotation side To with grille strip(8)The hand of spiral conversely, making the side end face of wherein side(802)Constitute end face windward(802a), opposite side Side end face(802)Constitute leeward end face(802b), and end face windward(802a)With outer face(801)Between angle α be more than Leeward end face(802b)With outer face(801)Between angle β.
7. a kind of new portable electric fan according to right will go 1, it is characterised in that:The supercharging concave surface(1101)For Arc.
8. a kind of new portable electric fan according to right will go 1, it is characterised in that:The supercharging concave surface(1101)With End face windward(11)By circular arc(17)Transition is connected.
9. a kind of new portable electric fan according to right will go 1, it is characterised in that:Described each blade(6) It is upper to be close to blade(6)Contour edge is provided with multiple supercharging basins(13)
A kind of new portable electric fan according to right will go 1, it is characterised in that:The grille strip(8)With respect to air-out Mouthful(2)Outwardly arch upward.
CN201710046179.8A 2017-01-22 2017-01-22 A kind of novel portable electric fan Active CN106837832B (en)

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CN106837832B CN106837832B (en) 2019-03-22

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CN107990443A (en) * 2017-12-06 2018-05-04 Tcl空调器(中山)有限公司 Outlet housing and air-conditioner outdoor unit
CN108548240A (en) * 2018-06-22 2018-09-18 广州海科电子科技有限公司 A kind of desktop air purifier
CN109440313A (en) * 2018-09-25 2019-03-08 台州市飞尔特电子科技有限公司 A kind of touch control integrated formula sewing machine case
CN109958630A (en) * 2017-12-14 2019-07-02 苏州宝时得电动工具有限公司 Suction and blowing device and its impeller
CN110360631A (en) * 2019-07-19 2019-10-22 中山市欧博尔电器有限公司 A kind of Portable kitchen ventilator
WO2020160602A1 (en) * 2019-02-04 2020-08-13 Shriro Australia Pty Limited Fan
US10859287B2 (en) 2017-09-29 2020-12-08 Iris Ohyama Inc. Air circulator
US11280352B2 (en) * 2019-02-28 2022-03-22 Schneider Electric It Corporation Fan cover
WO2022142379A1 (en) * 2020-12-31 2022-07-07 珠海格力电器股份有限公司 Fan head assembly and fan
US20240035482A1 (en) * 2021-01-26 2024-02-01 Gree Electric Appliances, Inc. Of Zhuhai Air blowing structure and fan
WO2024067427A1 (en) * 2022-09-29 2024-04-04 苏州欧普照明有限公司 Air guide structure of axial flow fan and ceiling fan lamp

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