CN206458628U - A kind of improved portable electric fan - Google Patents
A kind of improved portable electric fan Download PDFInfo
- Publication number
- CN206458628U CN206458628U CN201720077810.6U CN201720077810U CN206458628U CN 206458628 U CN206458628 U CN 206458628U CN 201720077810 U CN201720077810 U CN 201720077810U CN 206458628 U CN206458628 U CN 206458628U
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- China
- Prior art keywords
- air
- fan blade
- air intake
- side wall
- housing
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Abstract
The utility model discloses a kind of improved portable electric fan, including housing and fan blade, and the two sides correspondence of housing offers air outlet and air inlet, electric machine support is extended with air inlet, motor is installed, fan blade is connected with the output shaft on motor on electric machine support, it is characterised in that：The circumferencial direction of the 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, increase groove structure can break up the air-flow near fan blade neighboring, so that air-flow is able to pass through the juncture area of fan blade front end face and rear end face, reduce the intensity that air-flow is formed about vortex in fan blade neighboring, and then reduce vortex and housing collision and the disturbance to adjacent blades, and then lower the overall noise levels of fan blade, while the tolerance of air-flow can be increased.
Description
Technical field
The utility model is related to electric fan field, especially a kind of improved portable electric fan.
Background technology
Existing portable electric fan generally uses motor driving shaft stream fan blade, is switched to by the power for inputting motor
Air is circulated, 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 and rotated by motor, air is from leaf
The leading edge of piece is flowed into, and is flowed out after being boosted by aerofoil by the trailing edge of blade.
But air-flow enters after fan blade, gas angle of attack downstream is entered in centrifugal action and greatly and impacts gas caused by fan blade leading edge
Body boundary layer separation and the vortex that produces and form eddy current crack, largely effect on the impression that people are used electric fan, and drop
The Energy Efficiency Ratio of low electric fan.
Utility model content
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, and provides a kind of simple and reasonable for structure
A kind of improved portable electric fan, can solve the problems such as fan blade neighboring is formed about vortex.
The utility model solves the technical scheme that its technical problem used：
A kind of improved portable electric fan, including housing and fan blade, housing two sides correspondence offer air outlet and
It is extended with air inlet, air inlet on electric machine support, electric machine support and motor is installed, fan blade is connected with the output shaft on motor,
The circumferencial direction of the air inlet is provided with air intake circular arc side wall toward housing cavity, the inner side of air intake circular arc side wall circumferentially direction
Multiple grooves are offered, increase groove structure can break up the air-flow near fan blade neighboring so that air-flow is able to smoothly logical
The juncture area of fan blade front end face and rear end face is crossed, reduces the intensity that air-flow is formed about vortex in fan blade neighboring, and then
Reduce vortex and housing collision and the disturbance to adjacent blades, and then lower the overall noise levels of fan blade, while gas can be increased
The tolerance of stream.
In addition, air intake circular arc side wall is not limited solely on the housing of the circumferencial direction of air inlet, air outlet
Circumferencial direction installs air intake circular arc side wall toward housing cavity and is equally applicable to the technical program.
Correspondence air intake circular arc side wall circumferentially offers multiple air intake flow-guiding mouths, air intake water conservancy diversion in direction on the electric machine support
Mouthful it 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 hit in rotation process with groove, break up air and avoid the formation of vortex, push away fan blade increase
The air quantity entered.
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.
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.
The edge of the air intake flow-guiding mouth and groove corresponding matching, make electric fan overall more compact attractive in appearance, it is to avoid air
Bump against into during air inlet and air intake circular arc side wall.
The beneficial effects of the utility model are：
A kind of improved portable electric fan of the present utility model, simple in construction, convenient for production, increase groove structure can make
Air-flow near fan blade neighboring 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,
Reduce the intensity that air-flow is formed about vortex in fan blade neighboring, and then reduce vortex and collided with housing and to adjacent blades
Disturbance, and then lower the overall noise levels of fan blade, while the tolerance of air-flow can be increased.
Brief description of the drawings
Fig. 1 is decomposition texture schematic diagram of the present utility model.
Fig. 2 is air intake circular arc side wall construction schematic diagram of the present utility model.
Fig. 3 is amplification assumption diagram at A in Fig. 2.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples：
As shown in Figure 1 to Figure 3, a kind of improved portable electric fan, including housing 1 and fan blade 2, the two sides of housing 1
Correspondence, which offers to be extended with air outlet 3 and air inlet 4, air inlet 4 on electric machine support 5, electric machine support 5, is provided with motor 6, wind
Leaf 2 is connected with the output shaft 7 on motor 6, it is characterised in that：The circumferencial direction of the air inlet 4 toward the inner chamber of housing 1 be provided with into
Wind circular arc side wall 8, circumferentially direction offers multiple grooves 9 for the inner side of air intake circular arc side wall 8, and increase groove structure can make fan blade
Air-flow near neighboring 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
Air-flow is formed about the intensity of vortex in fan blade neighboring, and then reduction vortex is collided with housing and adjacent blades are disturbed
It is dynamic, 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 8 is not limited solely on the housing 1 of the circumferencial direction of air inlet 4, air outlet
3 circumferencial direction installs air intake circular arc side wall 8 toward the inner chamber of housing 1 and is equally applicable to the technical program.
Circumferentially direction offers multiple air intake flow-guiding mouths 10, air intake to correspondence air intake circular arc side wall 8 on the electric machine support 5
Flow-guiding mouth 10 is easy to air to enter air inlet 4, makes air even into fan blade 2.
The groove 9 is arc, triangle, square or other polygons, and the shape of groove 9 is not limited to one kind, other
Polygon can be such that the air-flow in vortex is hit in rotation process with groove 9, break up air and avoid the formation of vortex, increase fan blade
The air quantity of propulsion.
The air intake circular arc side wall 8 is connected with the integral type of housing 1, is easy to the production of air intake circular arc side wall 8, reduces what is installed
Time.
Transition end face 11 is provided between the adjacent groove 9, transition end face 11 is connected with electric machine support 5, it is to avoid reduce
Incoming air area, improves the Energy Efficiency Ratio of electric fan.
The edge of the air intake flow-guiding mouth 10 and the corresponding matching of groove 9, make electric fan overall more compact attractive in appearance, it is to avoid empty
Gas bumps against when entering air inlet 4 with air intake circular arc side wall 8.
Particular embodiments described above, only the utility model preferred embodiment, such as according to the utility model
The equivalent arrangements that claim is done, should be technology of the present utility model and are covered.
Claims (6)
1. a kind of improved portable electric fan, including housing（1）And fan blade（2）, housing（1）Two sides correspondence offer out
Air port（3）And air inlet（4）, air inlet（4）On be extended with electric machine support（5）, electric machine support（5）On motor is installed（6）, wind
Leaf（2）With motor（6）On output shaft（7）Connection, it is characterised in that：The air inlet（4）Circumferencial direction toward housing（1）It is interior
Chamber is provided with air intake circular arc side wall（8）, air intake circular arc side wall（8）Circumferentially direction offers multiple grooves for inner side（9）.
2. a kind of improved portable electric fan according to claim 1, it is characterised in that：The electric machine support（5）Shang pair
Answer air intake circular arc side wall（8）Circumferentially direction offers multiple air intake flow-guiding mouths（10）.
3. a kind of improved portable electric fan according to claim 1, it is characterised in that：The groove（9）For arc, three
Angular, square or other polygons.
4. a kind of improved portable electric fan according to claim 1, it is characterised in that：The air intake circular arc side wall（8）
With housing（1）Integral type is connected.
5. a kind of improved portable electric fan according to claim 1, it is characterised in that：Adjacent groove（9）Between set
There is transition end face（11）, transition end face（11）With electric machine support（5）Connection.
6. a kind of improved portable electric fan according to claim 2, it is characterised in that：The air intake flow-guiding mouth（10）'s
Edge and groove（9）Corresponding matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077810.6U CN206458628U (en) | 2017-01-22 | 2017-01-22 | A kind of improved portable electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077810.6U CN206458628U (en) | 2017-01-22 | 2017-01-22 | A kind of improved portable electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458628U true CN206458628U (en) | 2017-09-01 |
Family
ID=59699181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720077810.6U Active CN206458628U (en) | 2017-01-22 | 2017-01-22 | A kind of improved portable electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458628U (en) |
-
2017
- 2017-01-22 CN CN201720077810.6U patent/CN206458628U/en active Active
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