CN205225852U - Axial fan impeller structure - Google Patents
Axial fan impeller structure Download PDFInfo
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- CN205225852U CN205225852U CN201520832546.3U CN201520832546U CN205225852U CN 205225852 U CN205225852 U CN 205225852U CN 201520832546 U CN201520832546 U CN 201520832546U CN 205225852 U CN205225852 U CN 205225852U
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- blade
- fan blade
- telophragma
- axial flow
- vane wheel
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Abstract
The utility model discloses an axial fan impeller structure, including intermediate disk and fan blade, being equipped with a plurality of flute profile on fan blade tail edge, sunken and the flute profile is protruding, and transition part that the blade root department of each fan blade has the wall thickness to thicken gradually has a continuous structure of U type or C type in the blade root transition part of two adjacent blades, and the excircle position of intermediate disk is equipped with the arch and passes through between the fan blade, and bellied inward flange has the fillet to link to each other to the recess that the intermediate disk extends. The locating hole that is used for connecting fan blade and motor that has a plurality of equipartitions on the intermediate disk for the mounting hole of connecting motor shaft and fan blade lies in the positive center of intermediate disk, and the strengthening rib equipartition has a cylinder to encircle at the inner circle of strengthening rib on the intermediate disk. The beneficial effects of the utility model are that: increased the firmness of connecting, from the leading edge to tail edge, smooth transition is of value to the flow of air current, has reduced the blade root vortex and loss. Reduce the intermediate disk top and bottom and got tension, reduced fan operation's noise.
Description
Technical field
The utility model relates to a kind of axial flow fan vane wheel structure, particularly relates to a kind of impeller of the electric drilling match for the fields such as refrigeration-heating air-conditioner that ventilate.
Background technique
Blower fan is as an important carrier of conveying fluid, be commonly employed in fields such as ventilation refrigeration, metallic stamping pieces can only be formed uniform thickness fan blade, aerodynamic quality air quantity and the good air-foil fan blade of noise are then often needed to carry out injection moulding formation by plastics, the opposing party is for the realization of the connection of fan blade and motor, and plastic blade often can realize complicated design and firmly connect.Technological forming is carried out, the patent of uniform thickness metalloid fan blade by thermosetting, thermoplastic materials.
Model utility content
The purpose of this utility model overcomes deficiency of the prior art, provides a kind of rational in infrastructure, the axial flow fan vane wheel structure made an uproar in the safe end.
This axial flow fan vane wheel structure, comprise telophragma and fan blade, fan blade trailing edge is provided with several flute profiles depression and tooth-like projection, the transition portion that the blade root place of every a slice fan blade has wall thickness to thicken gradually, connected structure that is U-shaped or C type is had at the blade root transition portion of adjacent two panels blade, the outermost circle position of telophragma is provided with convex transitional between fan blade, and protruding inward flange has fillet to be connected to the recess that telophragma extends., telophragma has some uniform positioning holes for connecting fan blade and motor, and for connecting the center of mounting hole site in telophragma of motor shaft and fan blade, stiffening rib is distributed on telophragma, has a cylinder ring at the inner ring of stiffening rib.
As preferably: described transition portion such as to comprise at wall thickness contacting point, middle transition thickening place and with telophragma contacting point and thickness thickness.
As preferably: described cylinder ring is provided with curved surface for connection strengthening rib.
As preferably: the 3rd curved surface being provided with smooth transition between depression and projection.
As preferably: the shape of stiffening rib is cylindrical, and the end face of stiffening rib and cylinder ring, a little less than the surface of projection; Each stiffening rib is the blade root position at blade at the relative position of telophragma.
As preferably: the initial position of flute profile depression and tooth-like projection is the Ye Dingchu of fan blade trailing edge, and final position is high and following at 1/5 leaf of fan blade.
As preferably: have fillet smooth transition between flute profile depression and tooth-like projection.
As preferably: flute profile depression and tooth-like projection from initial position to final position, or etc. size be uniformly distributed, or etc. size become thin gradually, or to be uniformly distributed from large to small gradually, or to become gradually from large to small and dredge.
As preferably: the number of blade can be 3 ~ 11.
As preferably: the external diameter of blade is arbitrary size in the middle of 100 ~ 800mm.
The beneficial effects of the utility model are:
1) according to the utility model, because blade root place is the stressed larger position of fan blade, the transition piece thickeied gradually is had at the blade root place of fan blade, add the fastness of connection on the one hand, on the other hand, at blade root place, from leading edge to trailing edge, smooth transition, is of value to the flowing of air-flow, decreases blade root eddy current and loss.
2) according to the utility model, telophragma has the cylindrical body for strengthening fastness and cylinder ring, simultaneously due to the existence of these parts, in the process of plastic blade injection molded, reduce telophragma top and bottom and obtain tension force, make the coplanar flat that the lower surface of the telophragma of the fan blade be shaped is connected with motor blower fan head, this is also one of important innovations of the present utility model point.
3) according to the utility model, there are at the trailing edge position of every a slice fan blade several little mark of mouths sunken and protruding, between depression and projection, have fillet smooth transition.Air-flow from leading edge to trailing edge after, form some large eddy current at trailing edge place, these large whirlpools can be separated by little tooth type structures in advance, form little whirlpool, thus reduce the noise of fan operation when not arriving trailing edge.
Accompanying drawing explanation
Fig. 1 is the utility model front elevation;
Fig. 2 is the A-A sectional view of Fig. 1;
Description of reference numerals: fan blade 1, flute profile depression 2, tooth-like projection 3, positioning hole 4, mounting hole 5, stiffening rib 6, transition portion 7, protruding 8, mark place 9, connected structure 10, telophragma 11, cylinder ring 12, etc. wall thickness contacting point 13, middle transition thickening place 14, with telophragma contacting point and thickness thickness 15, first surface 16, second curved surface 17, the 3rd curved surface 18, plane 19.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model will be described in conjunction with preferred embodiment, should know, not represent the utility model restriction in the described embodiment.On the contrary, the utility model will contain can be included in attached claims limit scope of the present utility model in alternative, modified model and equivalent.
As shown in Figure 1, axial flow fan vane wheel and linkage structure, comprise some fan blades 1, the little flute profile that some depressions 2 and some projections (3) form, some positioning holes 4, mounting hole 5, some stiffening ribs 6, transition portion 7, protruding 8, mark place 9, connected structure 10, telophragma 11, cylinder ring 12.
As shown in Figure 2, axial flow fan vane wheel and linkage structure, comprise three positions being positioned at transition portion 7, its mean wall thickness contacting point 13, middle transition thickening place 14 and with telophragma contacting point and thickness thickness 15, curved surface 16, curved surface 17 and curved surface 18, plane 19.
According to the utility model, the leaf top place of fan blade 1 to the whole fan blade part of contacting point 13 to be etc. wall thickness plastic materials form, and be transitioned into thickness 15 by the mode of smooth transition gradually through thickening place 14, the intensity at what such Placement was strong ensure that blade root place, the design at conventional fan blade blade root place is reinforced often through adding protruding mode blade root, such mode can hinder the flowing of air-flow from the leading edge of blade root to trailing edge, and the mode that smooth transition of the present utility model thickeies gradually then effectively avoids the generation of this problem.
According to the utility model, at the trailing edge position of fan blade 1 by some depressions 2 and the protruding 3 little tooth type structures formed, the smooth transition curved surface 18 between depression 2 and protruding 3.For the trailing edge eddy current crack produced during fan operation, the little tooth type structures designed by the utility model then can reduce the generation of eddy current crack.The initial position of little tooth type structures is the Ye Dingchu of fan blade 1 trailing edge, and final position is high and following at 1/5 leaf of fan blade 1.The initial position of little flute profile to final position, little flute profile or etc. size be uniformly distributed, or etc. size become thin gradually, or little flute profile is uniformly distributed gradually from large to small, or little flute profile becomes gradually from large to small and dredges.
According to the utility model, have connected structure 10 that is U-shaped or C type at the blade root transition portion of connected two panels fan blade 1, U-shaped or C type breach design, increases the passage of air-flow, also helpful for the workmanship ability increasing fan blade.
For the connection of impeller and motor, want to keep blower fan and run stably, plane 19 will ensure and the plane parallel that do not mark in fan blade connecting head the utility model.In order to reach this purpose, the utility model takes following measure to realize: uniform some stiffening ribs 6 and a cylinder ring 12 on telophragma 11, simultaneously, at the curved surface 16 of cylinder ring 12 for connection strengthening rib 6, connection at protruding 8 places of the outer most edge of telophragma by fillet surface 18, make in the process of plastic blade injection molded, reduce telophragma top and bottom and obtain tension force, thus make plane 19 can with the plane parallel of fan blade connecting head.
The suction surface of arbitrary a slice fan blade 1 has a mark place 9, writes turning to of fan blade in order to mould, the information such as model and manufacturer.Mark
Based on the axial-flow blower that the fan blade 1 designed by the utility model and telophragma 11 are formed, the restriction for the diameter of impeller and the number of blade is not limited to the requirement in claim 9 and claim 11.
Based on axial flow fan vane wheel out designed by the utility model and linkage structure, can realize blower fan firmly steadily and the operation of low noise.
Claims (10)
1. an axial flow fan vane wheel structure, it is characterized in that: comprise telophragma (11) and fan blade (1), fan blade (1) trailing edge is provided with several flute profiles depression (2) and tooth-like projection (3), the transition portion (7) that the blade root place of every a slice fan blade (1) has wall thickness to thicken gradually, connected structure (10) that is U-shaped or C type is had at the blade root transition portion of adjacent two panels blade (1), the outermost circle position of telophragma (11) is provided with projection (8) transition between fan blade (1), the inward flange of protruding (8) has fillet to be connected to the recess that telophragma (11) extends, telophragma (11) has some uniform positioning holes (4) for connecting fan blade (1) and motor, mounting hole (5) for connecting motor shaft and fan blade is positioned at the center of telophragma (11), stiffening rib (6) is distributed on telophragma (11), a cylinder ring (12) is had at the inner ring of stiffening rib (6).
2. axial flow fan vane wheel structure according to claim 1, is characterized in that: described transition portion (7) such as to comprise at wall thickness contacting point (13), middle transition thickening place (14) and with telophragma contacting point and thickness thickness (15).
3. axial flow fan vane wheel structure according to claim 1, is characterized in that: described cylinder ring (12) is provided with curved surface (16) for connection strengthening rib (6).
4. axial flow fan vane wheel structure according to claim 1, is characterized in that: the 3rd curved surface (18) being provided with smooth transition between depression (2) and protruding (3).
5. axial flow fan vane wheel structure according to claim 1, it is characterized in that: the shape of stiffening rib (6) is cylindrical, the end face of stiffening rib (6) and cylinder ring (12), a little less than the surface of protruding (8); Each stiffening rib (6) is in the blade root position of blade (1) at the relative position of telophragma (11).
6. axial flow fan vane wheel structure according to claim 1, it is characterized in that: the initial position of flute profile depression (2) and tooth-like projection (3) is the Ye Dingchu of fan blade (1) trailing edge, and final position is high and following at 1/5 leaf of fan blade (1).
7. axial flow fan vane wheel structure according to claim 1, is characterized in that: have fillet smooth transition between flute profile depression (2) and tooth-like projection (3).
8. axial flow fan vane wheel structure according to claim 1, it is characterized in that: flute profile depression (2) and tooth-like projection (3) are from initial position to final position, or etc. size be uniformly distributed, or etc. size become thin gradually, or be uniformly distributed from large to small gradually, or become thin from large to small gradually.
9. axial flow fan vane wheel structure according to claim 1, is characterized in that: the number of blade (1) can be 3 ~ 11.
10. axial flow fan vane wheel structure according to claim 1, is characterized in that: the external diameter of blade (1) is arbitrary size in the middle of 100 ~ 800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832546.3U CN205225852U (en) | 2015-10-26 | 2015-10-26 | Axial fan impeller structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832546.3U CN205225852U (en) | 2015-10-26 | 2015-10-26 | Axial fan impeller structure |
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| Publication Number | Publication Date |
|---|---|
| CN205225852U true CN205225852U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520832546.3U Active CN205225852U (en) | 2015-10-26 | 2015-10-26 | Axial fan impeller structure |
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| CN (1) | CN205225852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275877A (en) * | 2015-10-26 | 2016-01-27 | 杭州微光电子股份有限公司 | Impeller structure of axial flow fan |
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2015
- 2015-10-26 CN CN201520832546.3U patent/CN205225852U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275877A (en) * | 2015-10-26 | 2016-01-27 | 杭州微光电子股份有限公司 | Impeller structure of axial flow fan |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |