CN204591735U - Electric fan - Google Patents
Electric fan Download PDFInfo
- Publication number
- CN204591735U CN204591735U CN201520294793.2U CN201520294793U CN204591735U CN 204591735 U CN204591735 U CN 204591735U CN 201520294793 U CN201520294793 U CN 201520294793U CN 204591735 U CN204591735 U CN 204591735U
- Authority
- CN
- China
- Prior art keywords
- inlet air
- wheel hub
- electric fan
- air guard
- running shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 241000883990 Flabellum Species 0.000 claims abstract description 34
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 2
- 230000003860 sleep quality Effects 0.000 description 2
- 206010013082 Discomfort Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of electric fan, comprises an inlet air guard and a flabellum.Inlet air guard has a containing space.Flabellum can be arranged in containing space by inlet air guard relatively rotatably.Flabellum comprises a wheel hub and multiple blade.Wheel hub rotates along a running shaft relative to inlet air guard.Blade is arranged at wheel hub and extends toward the direction away from this wheel hub.Blade respectively has connection wheel hub and the past wind cutting lateral margin extended away from wheel hub direction.Between the mid point of wind cutting lateral margin in the radial direction of wheel hub and inlet air guard, there is a spacing in the axial direction of the rotation shaft.Blade has a width in the axial direction of the rotation shaft, and spacing is more than or equal to width.
Description
Technical field
The utility model relates to a kind of electric fan, particularly a kind of electric fan of low noise.
Background technique
Early stage people utilize Hand swing fan to relieve summer heat in a manual fashion.People utilize Hand swing fan to relieve summer heat except meet facing the wind power weak being comparatively difficult to deals with except the problem of heat, under long-time use, more easily produce the situation of the discomforts such as DOMS.Therefore, people then invented electric fan and relieve summer heat in electronic mode, namely utilize electric power to make motor drive flabellum High Rotation Speed and send cooling blast.Thus, the object of relieving summer heat can be reached comparatively effortlessly.
But during fan running, blade can cut air, and the related blade both sides flow velocity that causes is uneven, and the air arround causing produces noise by the guard interference of fan.If when the rotating speed of fan improves, blade and air, and the annoyance level between air and guard can aggravate, and related generation more annoying noise.Particularly the dead of night, annoying noise will disturb the sleep quality of user.Therefore, the noise how to be produced by electric fan reduces as far as possible, to abate the noise to the interference of user as far as possible, and then promotes the sleep quality of user, becomes the problem needing solution at present badly.
Model utility content
The purpose of this utility model is to provide a kind of electric fan, in order to improve the noise problem produced when existing electric fan uses.
For reaching above-mentioned purpose, the utility model provides a kind of electric fan, and it comprises:
One inlet air guard, this inlet air guard has a containing space; And
One flabellum, this inlet air guard is arranged in this containing space rotatably relatively, this flabellum comprises a wheel hub and multiple blade, this wheel hub rotates along a running shaft relative to this inlet air guard, those blades are arranged at this wheel hub and extend toward the direction away from this wheel hub, those blades respectively have this wheel hub of connection and the past wind cutting lateral margin extended away from this wheel hub direction, between the stage casing of this wind cutting lateral margin in the radial direction of this wheel hub and this inlet air guard, at this running shaft, axially there is a spacing, those blades axially respectively have a width at this running shaft, this spacing is more than or equal to this width.
Above-mentioned electric fan, wherein this spacing is the distance axially at this running shaft between the mid point of this wind cutting lateral margin in the radial direction of this wheel hub and this inlet air guard.
Above-mentioned electric fan, wherein this inlet air guard comprises cover portion, side and a face shield portion, and this cover portion, side is connected to the periphery in this face shield portion, and this spacing is the distance axially at this running shaft between the mid point of this wind cutting lateral margin in the radial direction of this wheel hub and this face shield portion.
Above-mentioned electric fan, wherein this face shield portion is orthogonal to the axis of this running shaft.
Above-mentioned electric fan, wherein axial clamp one acute angle of this face shield portion and this running shaft.
Above-mentioned electric fan, wherein this face shield portion has multiple intervals rib, and those interval ribs are vertical bar shape.
Above-mentioned electric fan, wherein this face shield portion has multiple intervals rib, and those interval ribs are curved shape.
Above-mentioned electric fan, wherein more comprise a motor, this motor comprises a motor body and a supporting structure, this inlet air guard has one allows bit space and an opening, this this opening of spatial joins of stepping down, this supporting structure is arranged at this and allows to fix this motor body in this opening and this containing space in bit space, and this motor body drives this wheel hub to rotate along this running shaft relative to this inlet air guard.
Above-mentioned electric fan, wherein those blades respectively have low pressure surface and a multiple pit, and this low-pressure meter is facing to this inlet air guard, and those pits are positioned at this low pressure surface.
Above-mentioned electric fan, wherein the size of those pits is different.
According to electric fan provided by the utility model, because the space D between blade and inlet air guard is greater than the width W of blade.Therefore, when flabellum rotates, between the low pressure area of inlet air guard and blade, keep larger distance, make to be declined by the air-flow of inlet air guard and the interference each other of inlet air guard, and then the noise produced is declined.
In addition, under space D between blade and inlet air guard is greater than the condition of the width W of blade, declined by the air-flow of inlet air guard and the interference each other of the inlet air guard turbulent flow also making to produce in electric fan that declines, and then turbulent flow is weakened the interference of the air-flow leaving flabellum.Thus, flabellum can maintain the identical air output of electric fan with lower rotary rpm, and the noise produced when electric fan is operated declines along with flabellum rotary rpm and and then declines.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the perspective view of the electric fan of the utility model one embodiment;
Fig. 2 is the stereochemical structure exploded view of the electric fan of the utility model one embodiment;
Fig. 3 is the cross-sectional schematic of the electric fan of the utility model one embodiment;
Fig. 4 is the schematic rear view of the flabellum of the electric fan of the utility model one embodiment;
Fig. 5 is the cross-sectional schematic of flabellum along 5-5 hatching of the electric fan of Fig. 4;
Fig. 6 is the schematic rear view of the inlet air guard of the electric fan of the utility model one embodiment.
Wherein, reference character
100 electric fans
110 inlet air guards
111 cover portion, sides
112 face shield portions
1121 interval ribs
1122 openings
1123 allow bit space
113 containing spaces
120 air outlet mesh
130 flabellums
131 wheel hubs
132 blades
1321 wind cutting lateral margins
1322 low pressure surfaces
1323 apical margins
1324 leading wedge angles
1325 pits
140 motors
141 motor bodies
1411 rotating shafts
142 supporting structures
1421 shells
1422 links
150 supports
M mid point
D spacing
W width
Embodiment
Below detailed features of the present utility model and advantage is described in embodiments in detail, its content is enough to make any relevant art of haveing the knack of understand technology contents of the present utility model and implement according to this, and content, right and the accompanying drawing disclosed by this specification, any relevant art of haveing the knack of can understand the relevant object of the utility model and advantage easily.Following embodiment further describes viewpoint of the present utility model, but non-to limit category of the present utility model anyways.
Please refer to Fig. 1 to Fig. 6, Fig. 1 is the perspective view of the electric fan of the utility model one embodiment.Fig. 2 is the stereochemical structure exploded view of the electric fan of the utility model one embodiment.Fig. 3 is the cross-sectional schematic of the electric fan of the utility model one embodiment.Fig. 4 is the schematic rear view of the flabellum of the electric fan of the utility model one embodiment.Fig. 5 is the cross-sectional schematic of flabellum along 5-5 hatching of the electric fan of Fig. 4.Fig. 6 is the schematic rear view of the inlet air guard of the electric fan of the utility model one embodiment.
The electric fan 100 of the utility model one embodiment, comprises inlet air guard 110, air outlet mesh 120, flabellum 130, motor 140, support 150.Inlet air guard 110 comprises cover portion, side 111 and a face shield portion 112.Cover portion, side 111 is connected to the periphery in face shield portion 112 obliquely, jointly forms a containing space 113 to make cover portion, side 111 and face shield portion 112.Face shield portion 112 has multiple intervals rib 1121 of spaced-apart relation.The center portion in face shield portion 112 has an opening 1122.Multiple intervals rib 1121 is radially arranged in the periphery of opening 1122.In multiple intervals rib 1121, there is partial separation rib 1121 to bend towards containing space 113 and form one and allow bit space 1123, allow bit space 1123 be connected with opening 1122.Air outlet mesh 120 is connected with the cover portion, side 111 of inlet air guard 110, and covers containing space 113.In the utility model one embodiment, the shape of interval rib 1121 is curved shape, but not as limit.In this novel embodiment again, the shape of interval rib is vertical bar shape.In other embodiments of the utility model, the shape of interval rib can be vertical bar shape, and formation allows the shape of the interval rib of bit space can be curved shape, or the shape of interval rib can be curved shape, and formation allows the shape of the interval rib of bit space can be vertical bar shape.
Flabellum 130 can be arranged in containing space 113 by inlet air guard 110 relatively rotatably.Flabellum 130 comprises a wheel hub 131 and multiple blade 132.Multiple blade 132 is arranged at wheel hub 131 and extends toward the direction away from wheel hub 131.Wheel hub 131 can rotate along a running shaft relative to inlet air guard 110, and multiple blade 132 can be rotated along running shaft to produce air-flow.In the utility model one embodiment, the extended surface in the face shield portion 112 of inlet air guard 110 and axial clamp one acute angle of running shaft, but not as limit.In other embodiments of the utility model, the extended surface in the face shield portion of inlet air guard is orthogonal to the axis of running shaft.
Multiple blade 132 respectively has wind cutting lateral margin 1321, low pressure surface 1322, apical margin 1323 and a leading wedge angle 1324.Wind cutting lateral margin 1321 and low pressure surface 1322 all connect wheel hub 131 also toward extending away from wheel hub 131 direction.Low pressure surface 1322 is the surface of blade 132 towards inlet air guard 110.Apical margin 1323 is the side of blade 132 away from wheel hub 131.And.Wind cutting lateral margin 1321, apical margin 1323 are connected with low pressure surface 1322, and form a leading wedge angle 1324 in joint.Leading wedge angle 1324 and flabellum 130 sense of rotation press from both sides a very small angles, to reduce resistance of air when blade 132 cuts air.When flabellum 130 rotates, wind cutting lateral margin 1321 is the side that blade 132 cuts air, and low pressure surface 1322 is blade 132 surface that air pressure is lower.Low pressure surface 1322 has multiple pit 1325 with different opening sizes and the degree of depth.Multiple pit 1325 is such as positioned at low pressure surface 1322 near wind cutting lateral margin 1321 place, and the turbulent flow produced when flabellum 130 is rotated reduces, and weakens turbulent flow to the interference of air-flow leaving flabellum 130, and reduces the noise produced when flabellum 130 rotates.Thus, flabellum 130 rotating speed must not brought up to the high rotating speed that can produce a large amount of noise, and only need maintain identical flabellum 130 rotating speed, the air output of electric fan 100 can be made to be improved.In the utility model one embodiment, pit 1325 has different opening sizes and the degree of depth, but not as limit.In other embodiments of the utility model, pit can have identical opening size or the identical degree of depth.
What motor 140 was arranged at the face shield portion 112 of inlet air guard 110 allows bit space 1123 and opening 1122.Motor 140 comprises motor body 141 and a supporting structure 142.Motor body 141 has a rotating shaft 1411.Supporting structure 142 comprises the shells 1421 and a connection piece 1422 that are connected to each other.Motor body 141 is fixed in shells 1421 and rotating shaft 1411 extends toward shells 1421 outside.What shells 1421 was arranged at face shield portion 112 allows bit space 1123 and opening 1122, and the link 1422 be connected with shells 1421 is positioned at and allows bit space 1123.The rotating shaft 1411 of the motor body 141 in shells 1421 is passed the opening 1122 in face shield portion 112 and extends in containing space 113.The wheel hub 131 being arranged in the flabellum 130 of containing space 113 is fixed on rotating shaft 1411, makes flabellum 130 by the driving of motor body 141, rotates with rotating shaft 1411 for running shaft relative to inlet air guard 110.In the utility model one embodiment, inlet air guard 110 has one allows bit space 1123 to be installed with motor 140, but not as limit.In other embodiments of the utility model, inlet air guard can be a nonpitting outward appearance, and motor is fixed on inlet air guard outside.
Please refer to Fig. 3, when the wheel hub 131 of flabellum 130 is fixed on the rotating shaft 1411 of motor body 141, between the mid point M of wind cutting lateral margin 1321 in the radial direction of wheel hub 131 and the face shield portion 112 of inlet air guard 110, in rotating shaft 1411, axially there is a space D.Each blade 132 axially respectively has a width W in rotating shaft 1411.In other words, between each blade 132 and the face shield portion 112 of inlet air guard 110, equal width W in the beeline axially of rotating shaft 1411 and the difference of longest distance.When air-flow is entered in containing space 113 by inlet air guard 110, the design of the width W of blade 132 is more than or equal to due to the space D between blade 132 and inlet air guard 110, inlet air guard 110 is declined for the disturbance regime of air-flow, and the related turbulent problem improved airflow passes inlet air guard 110 and produce, and the noise that reduction airflow collision inlet air guard 110 produces.In inlet air guard 110, the ratio that the region that space D between blade 132 and inlet air guard 110 is more than or equal to the width W of blade 132 accounts for inlet air guard Zone Full is higher, inlet air guard 110 declines more for the disturbance regime of air-flow, the turbulent problem that airflow passes inlet air guard 110 produces is improved more, and the noise that airflow collision inlet air guard 110 produces declines more.
Through actual measurement, the electric fan 100 of the utility model one embodiment is compared with present fan (space D between blade 132 with inlet air guard 110 is less than the fan of the width W of blade 132), and total noise that the electric fan 100 of the present embodiment is produced in use about can reduce by 2 ~ 3 decibels (dB).
One end of support 150 is connected with the link 1422 of the supporting structure 142 of motor 140, the relative the other end of support 150 can be connected with pedestal (not illustrating), makes electric fan 100 can be erected in ground, be fixed on wall or be fixed on ceiling board by support 150 and pedestal (not illustrating).
According to electric fan provided by the utility model, the space D between blade and inlet air guard is greater than the width W of blade.Therefore, when flabellum rotates, between the low pressure area of inlet air guard and blade, keep larger distance, make to be declined by the air-flow of inlet air guard and the interference each other of inlet air guard, and then the noise produced is declined.
In addition, under space D between blade and inlet air guard is greater than the condition of the width W of blade, declined by the air-flow of inlet air guard and the interference each other of the inlet air guard turbulent flow also making to produce in electric fan that declines, and then turbulent flow is weakened the interference of the air-flow leaving flabellum.Thus, flabellum can maintain the identical air output of electric fan with lower rotary rpm, and the noise produced when electric fan is operated declines along with flabellum rotary rpm and and then declines.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (10)
1. an electric fan, is characterized in that, comprises:
One inlet air guard, this inlet air guard has a containing space; And
One flabellum, this inlet air guard is arranged in this containing space rotatably relatively, this flabellum comprises a wheel hub and multiple blade, this wheel hub rotates along a running shaft relative to this inlet air guard, those blades are arranged at this wheel hub and extend toward the direction away from this wheel hub, those blades respectively have this wheel hub of connection and the past wind cutting lateral margin extended away from this wheel hub direction, between the stage casing of this wind cutting lateral margin in the radial direction of this wheel hub and this inlet air guard, at this running shaft, axially there is a spacing, those blades axially respectively have a width at this running shaft, this spacing is more than or equal to this width.
2. electric fan according to claim 1, is characterized in that, this spacing is the distance axially at this running shaft between the mid point of this wind cutting lateral margin in the radial direction of this wheel hub and this inlet air guard.
3. electric fan according to claim 1, it is characterized in that, this inlet air guard comprises cover portion, side and a face shield portion, and this cover portion, side is connected to the periphery in this face shield portion, and this spacing is the distance axially at this running shaft between the mid point of this wind cutting lateral margin in the radial direction of this wheel hub and this face shield portion.
4. electric fan according to claim 3, is characterized in that, this face shield portion is orthogonal to the axis of this running shaft.
5. electric fan according to claim 3, is characterized in that, axial clamp one acute angle of this face shield portion and this running shaft.
6. electric fan according to claim 3, is characterized in that, this face shield portion has multiple intervals rib, and those interval ribs are vertical bar shape.
7. electric fan according to claim 3, is characterized in that, this face shield portion has multiple intervals rib, and those interval ribs are curved shape.
8. electric fan according to claim 1, it is characterized in that, more comprise a motor, this motor comprises a motor body and a supporting structure, this inlet air guard has one allows bit space and an opening, this this opening of spatial joins of stepping down, this supporting structure is arranged at this and allows to fix this motor body in this opening and this containing space in bit space, and this motor body drives this wheel hub to rotate along this running shaft relative to this inlet air guard.
9. electric fan according to claim 1, is characterized in that, those blades respectively have low pressure surface and a multiple pit, and this low-pressure meter is facing to this inlet air guard, and those pits are positioned at this low pressure surface.
10. electric fan according to claim 9, is characterized in that, the size of those pits is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294793.2U CN204591735U (en) | 2015-05-08 | 2015-05-08 | Electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520294793.2U CN204591735U (en) | 2015-05-08 | 2015-05-08 | Electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591735U true CN204591735U (en) | 2015-08-26 |
Family
ID=53927894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520294793.2U Expired - Fee Related CN204591735U (en) | 2015-05-08 | 2015-05-08 | Electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591735U (en) |
-
2015
- 2015-05-08 CN CN201520294793.2U patent/CN204591735U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |