CN205331055U - A impeller for fan - Google Patents
A impeller for fan Download PDFInfo
- Publication number
- CN205331055U CN205331055U CN201620125055.XU CN201620125055U CN205331055U CN 205331055 U CN205331055 U CN 205331055U CN 201620125055 U CN201620125055 U CN 201620125055U CN 205331055 U CN205331055 U CN 205331055U
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- impeller
- blade
- wheel hub
- leading edge
- edge
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Abstract
The utility model relates to an impeller for fan, including roughly being conical wheel hub and being coupled to a plurality of blades of wheel hub, every blade all includes leading edge, trailing edge, be coupled to inboard edge that wheel hub surface duplex winding wheel hub surface extends, with the right outside edge of inboard marginal facies and be located the leading edge and the blade tip of outside edge intersect department, the leading edge sets up to the indent structure from wheel hub to the blade tip. In this structure, the whole indent of blade leading edge, intake air's resistance has not only improved the amount of wind in the time of can reducing the high -speed rotation of blade, has reduced the disturbance of air current in addition to from this greatly reduced the noise that produces of blade when operation.
Description
Technical field
This utility model relates to fan technology field, especially relates to a kind of impeller for fan。
Background technology
Chinese utility model patent CN202326401U discloses a kind of impeller for fan, this impeller includes: the wheel hub of general conical, and it is connected to multiple blades of wheel hub, each blade includes leading edge, trailing edge, the outer surface being connected to wheel hub the inside edge partly extended around the outer surface of wheel hub, the outer ledge relative with inside edge, and it is positioned at leading edge and the blade tips of outer ledge intersection, wherein, leading edge includes the interior section adjacent with wheel hub, and the exterior section adjacent with blade tips, wherein, interior section stretches backward from wheel hub to exterior section, exterior section stretches forward from interior section to blade tips, the width of its Leaf gradually decreases from leading edge to trailing edge。
In said structure, the interior section of leading edge adopts the outer male structure stretched backward on the one hand, sucks the resistance of air, not only cause air quantity to reduce when can increase blade high speed rotating, so that air flows out existing violent disturbance and causes loud noise。On the other hand, width of blade gradually decreases from leading edge to trailing edge, though the effect of multiplication air-flow when the air is sucked can be realized, but is unfavorable for that air forms current stabilization from blade afterbody when flowing out, it is easy to cause the raw new round disturbance of air miscarriage to cause the aggravation of noise。
Summary of the invention
The purpose of this utility model is in that to overcome the deficiency of above-mentioned prior art, it is provided that one can reduce windage, improves air quantity, reduce noise, and is beneficial to the impeller for fan forming current stabilization。
The purpose of this utility model is achieved by the following technical programs:
A kind of impeller for fan, including generally conical shape wheel hub and the multiple blades being connected to wheel hub, each blade all includes leading edge, trailing edge, be connected to hub outside surface and around the inside edge outer ledge relative with inside edge that hub outside surface extends and be positioned at leading edge and the blade tips of outer ledge intersection, and described leading edge is set to concave inward structure from wheel hub to blade tips。
Further, described leading edge is set to arc concave shape structure from wheel hub to blade tips。
Further, each blade also includes the front part with adjacent leading edge and the rear portion adjacent with trailing edge, the width of described front part initiating terminal from leading edge to rear portion gradually decreases, and the width of described rear portion is wide from the cut-off end of front part to trailing edge。
Further, the length of described front part is more than 1/2nd of vane overall length degree, and the length of described rear portion is less than 1/2nd of vane overall length degree。
Further, the length of described rear portion less than vane overall length degree 1/2nd and more than 1/3rd of vane overall length degree。
Further, described trailing edge is provided with at least one inner sunken face。
Further, each blade extends an angle around wheel hub, and this angle is the scope of 50 to 115 °。
Further, the length of described outer ledge is more than the length of inside edge。
Further, the length of described outer ledge is 3-4 times of leading edge width。
Further, the length of described outer ledge is 6-8 times of trailing edge width。
Compared with prior art, this utility model has the advantage that
1) in this structure, blade inlet edge entirety indent, it is possible to suck the resistance of air when reducing blade high speed rotating, not only increase air quantity, and decrease the disturbance of air stream, and the noise produced when thus greatly reducing blade movement。
2) width of blade middle front part part is gradually reduced, achieve the effect of the air-flow that doubles when the air is sucked, and blade postmedian part is wide, then be conducive to air to form current stabilization when flowing out from blade afterbody, thus avoiding the generation of flow-disturbing, further ensure that the effect of noise reduction。
3) trailing edge is provided with inner sunken face, and this inner sunken face can increase the stability of air current flow further, makes the noise minimization that blade produces at work。
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of impeller；
Fig. 2 is the schematic front view of impeller；
Fig. 3 is the schematic top plan view of impeller；
Fig. 4 is the cross-sectional schematic of A-A in Fig. 3。
Detailed description of the invention
This utility model is described in further detail by the embodiment provided below in conjunction with accompanying drawing。
As shown in Figures 1 to 4, a kind of impeller for fan, including generally conical shape wheel hub 1 and the multiple blades 2 being connected to wheel hub 1, each blade 2 all includes leading edge 21, trailing edge 22, be connected to wheel hub 1 outer surface and around inside edge 23 outer ledge 24 relative with inside edge 23 that wheel hub 1 outer surface extends and be positioned at leading edge 21 and the blade tips 25 of outer ledge 24 intersection。Wherein, leading edge 21 is set to concave inward structure from wheel hub 1 to blade tips 25, it is preferred that this concave inward structure is arc concave shape structure, sucks the resistance of air when so can reduce blade high speed rotating as much as possible。Each blade 2 also includes the front part 26 adjacent with leading edge 21 and the rear portion 27 adjacent with trailing edge 22, the width of front part 26 gradually decreases from leading edge 21 to the initiating terminal of rear portion 27, and the width of rear portion 27 is wide from the cut-off end of front part 26 to trailing edge 22。The initiating terminal of rear portion 27 described herein and the cut-off end of front part 26 are same place, mean the junction of front part 26 and rear portion 27。
Preferably, the length of front part 26 is more than 1/2nd of blade 2 total length, and the length of rear portion 27 is less than 1/2nd of blade 2 total length。Be more highly preferred to, the length of rear portion 27 less than blade 2 total length 1/2nd and more than 1/3rd of blade 2 total length。
Further, trailing edge 22 is provided with at least one inner sunken face 221, and preferred in the present embodiment is two continuous print inner sunken faces by trailing edge 22 whole installation。
Preferably, each blade extends an angle around wheel hub, and this angle is the scope of 50 to 115 °, and so design can increase air channel length, increases area of passage, thus increasing air quantity further, improves wind-force。
Preferably, the length of outer ledge 24 is more than the length of inside edge 23。The length of outer ledge 24 is 3-4 times of leading edge 21 width。The length of outer ledge 24 is 6-8 times of trailing edge 22 width。
As described above, it is only this novel preferred embodiment, when the scope of this novel enforcement can not be limited with this, the simple equivalence change namely generally made according to this novel claim and novel description with modify, all still belong in the scope that this new patent is contained。
Claims (10)
1. the impeller for fan, including generally conical shape wheel hub and the multiple blades being connected to wheel hub, each blade all includes leading edge, trailing edge, be connected to hub outside surface and around the inside edge outer ledge relative with inside edge that hub outside surface extends and be positioned at leading edge and the blade tips of outer ledge intersection, it is characterised in that: described leading edge is set to concave inward structure from wheel hub to blade tips。
2. a kind of impeller for fan according to claim 1, it is characterised in that: described leading edge is set to arc concave shape structure from wheel hub to blade tips。
3. a kind of impeller for fan according to claim 1 or claim 2, it is characterized in that: each blade also includes the front part with adjacent leading edge and the rear portion adjacent with trailing edge, the width of described front part initiating terminal from leading edge to rear portion gradually decreases, and the width of described rear portion is wide from the cut-off end of front part to trailing edge。
4. a kind of impeller for fan according to claim 3, it is characterised in that: the length of described front part is more than 1/2nd of vane overall length degree, and the length of described rear portion is less than 1/2nd of vane overall length degree。
5. a kind of impeller for fan according to claim 3, it is characterised in that: the length of described rear portion less than vane overall length degree 1/2nd and more than 1/3rd of vane overall length degree。
6. a kind of impeller for fan according to claim 1 or claim 2, it is characterised in that: described trailing edge is provided with at least one inner sunken face。
7. a kind of impeller for fan according to claim 1 or claim 2, it is characterised in that: each blade extends an angle around wheel hub, and this angle is the scope of 50 to 115 °。
8. a kind of impeller for fan according to claim 1 or claim 2, it is characterised in that: the length of described outer ledge is more than the length of inside edge。
9. a kind of impeller for fan according to claim 1 or claim 2, it is characterised in that: the length of described outer ledge is 3-4 times of leading edge width。
10. a kind of impeller for fan according to claim 1 or claim 2, it is characterised in that: the length of described outer ledge is 6-8 times of trailing edge width。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125055.XU CN205331055U (en) | 2016-01-26 | 2016-01-26 | A impeller for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125055.XU CN205331055U (en) | 2016-01-26 | 2016-01-26 | A impeller for fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331055U true CN205331055U (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620125055.XU Active CN205331055U (en) | 2016-01-26 | 2016-01-26 | A impeller for fan |
Country Status (1)
| Country | Link |
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| CN (1) | CN205331055U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321004A (en) * | 2022-01-24 | 2022-04-12 | 北京小狗吸尘器集团股份有限公司 | Impeller with inclined front edge moving blades, fan assembly and dust collector |
| CN114412831A (en) * | 2022-01-24 | 2022-04-29 | 北京小狗吸尘器集团股份有限公司 | Impeller, fan assembly with same and dust collector |
| CN114412832A (en) * | 2022-01-24 | 2022-04-29 | 北京小狗吸尘器集团股份有限公司 | Impeller capable of reducing secondary flow on surface of moving blade, fan assembly and dust collector |
| CN114658684A (en) * | 2022-01-24 | 2022-06-24 | 北京小狗吸尘器集团股份有限公司 | Moving impeller, fan assembly with moving impeller and dust collector |
-
2016
- 2016-01-26 CN CN201620125055.XU patent/CN205331055U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321004A (en) * | 2022-01-24 | 2022-04-12 | 北京小狗吸尘器集团股份有限公司 | Impeller with inclined front edge moving blades, fan assembly and dust collector |
| CN114412831A (en) * | 2022-01-24 | 2022-04-29 | 北京小狗吸尘器集团股份有限公司 | Impeller, fan assembly with same and dust collector |
| CN114412832A (en) * | 2022-01-24 | 2022-04-29 | 北京小狗吸尘器集团股份有限公司 | Impeller capable of reducing secondary flow on surface of moving blade, fan assembly and dust collector |
| CN114658684A (en) * | 2022-01-24 | 2022-06-24 | 北京小狗吸尘器集团股份有限公司 | Moving impeller, fan assembly with moving impeller and dust collector |
| CN114412831B (en) * | 2022-01-24 | 2024-06-14 | 北京小狗吸尘器集团股份有限公司 | Impeller, fan assembly with impeller and dust collector |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |