CN100497952C - Axial flow fan - Google Patents
Axial flow fan Download PDFInfo
- Publication number
- CN100497952C CN100497952C CNB2004100286397A CN200410028639A CN100497952C CN 100497952 C CN100497952 C CN 100497952C CN B2004100286397 A CNB2004100286397 A CN B2004100286397A CN 200410028639 A CN200410028639 A CN 200410028639A CN 100497952 C CN100497952 C CN 100497952C
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- China
- Prior art keywords
- blade
- axial flow
- ring structure
- flow fan
- outer periphery
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- 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 - Lifetime
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- 230000012447 hatching Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention relates to an axial flow fan that includes a vane structure, a circle structure and plural connection components. The vane structure contains several vanes and arraying for circularity. Every vane has an out periphery that has a top. The circle structure is connects to the top of every vane. And the connection components are set at the out periphery of every vane and connect to the circle structure.
Description
Technical field
The relevant a kind of axial flow fan of the present invention is particularly relevant for a kind of axial flow fan that strengthens flabellum intensity.
Background technique
General commonly used instrument or equipment can produce heat when operation, therefore can install cooling mechanism such as fan additional and dispel the heat, and have problems because of overheated avoiding.Because the demand of heat radiation is increasing, the requirement of fan usefulness is also along with raising, and axial flow fan 10a commonly used at present is made of housing 1 and blade structure 2 shown in Figure 1A.Figure 1A displays bounding box 1 and the combination schematic representation of blade structure 2.Figure 1B is the stereogram that shows the blade structure 2 among Figure 1A.Can find out that by Figure 1B blade structure 2 comprises the blade 21 of several annular arrangements.The shortcoming of this design is to be when blade 21 is oversize blade 21 easy deformation bendings, and the working life that influences the quality of fan and reduce fan structure.
Therefore, existing existing solution is respectively No. the 592794th, U. S. Patent notification number and No. 4287137 axial flow fan sectional drawing as shown in Figure 2 to Figure 3.Referring to Fig. 2, this axial flow fan 10b has an annulus (annular venturi) 3, and it is connected fully with the outer end 22 of blade 21, though can increase the intensity of blade integral, closed annulus 3 still can stop the side direction wind inlet.
And the axial flow fan 10c of Fig. 3 comprises several closed annulus (closed loops) 4 and several ribbons that be arranged in parallel (parallelly-arranged straps) 41, annulus 4 and ribbon 41 all are arranged on several blades 21, this constitutes as same grid (grating), though the side 11 of housing 1 has a wind inlet 12, yet, air-flow will be through could 11 entering after the turnover from the side, can cause the flow field to have some setbacks equally, and ribbon 41 more increases the degree of difficulty of making, and increases the manufacture cost of whole fan.
Therefore, in above-mentioned solution, can't satisfy the stability and the usefulness that promotes fan of blade structure simultaneously, thereby cause the problem of axial flow fan bad characteristic.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of axial flow fan, it can increase the area of side inlet air, increases usefulness effectively.
Another object of the present invention is to provide a kind of axial flow fan, it can strengthen blade structure.
Another purpose of the present invention is to provide a kind of axial flow fan, and it can increase Security.
Axial flow fan according to the present invention comprises a blade structure, comprises a blade structure, a ring structure and several joints.Blade structure comprises several blades, arranges circlewise, and each blade has an outer periphery, and the outer periphery has a top.Ring structure is connected with the top of each blade respectively, and joint then is arranged at the outer periphery of each blade, and is connected in ring structure.
Again in the present invention, the top accounts for 1/3rd of outer periphery length.
In addition, the thickness of ring structure is the length that is less than or equal to the top.
Again in the present invention, each joint is an inverted cone shape.
Again in the present invention, each joint is a strip.
Again in the present invention, each joint is haply perpendicular to this ring structure.
Again in the present invention, the outer periphery of each blade also comprises a bottom, and each joint is in order to connect bottom and ring structure.
Again in the present invention, blade structure, ring structure and joint are formed in one.
Again in the present invention, ring structure has a circular cross-section.
In addition, ring structure has an elliptic cross-section.
In addition, ring structure has a rectangular cross-section.
In addition, ring structure has a polygonal cross-section.
Axial flow fan of the present invention also comprises a housing, and housing has a breach, and ring structure is that part is positioned at breach.
In addition, breach comprises a sidewall, has an angle, and angle is corresponding to the outer periphery of waiting blade.
For further specifying above-mentioned purpose of the present invention, structural feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Figure 1A shows existing axial flow fan schematic representation;
Figure 1B is the blade schematic representation that shows existing axial flow fan;
Fig. 2 shows another kind of existing axial flow fan generalized section;
Fig. 3 shows another kind of existing axial flow fan generalized section;
Fig. 4 shows first embodiment of the present invention axial flow fan decomposing schematic representation;
Fig. 5 A is the blade structure schematic representation that shows first embodiment of the present invention axial flow fan;
Fig. 5 B shows the blade of first embodiment of the present invention axial flow fan and the local enlarged diagram of ring structure;
Fig. 6 shows first embodiment of the present invention axial flow fan generalized section;
Fig. 7 A is the blade structure plan view that shows the first embodiment of the present invention;
Fig. 7 B is the sectional drawing that shows along the observed ring structure of the hatching AA ' of Fig. 7 A;
Fig. 8 A is the blade structure schematic representation that shows second embodiment of the present invention axial flow fan;
Fig. 8 B shows the blade of second embodiment of the present invention axial flow fan and the partial enlarged drawing of ring structure;
Fig. 9 A is the blade structure schematic representation that shows third embodiment of the present invention axial flow fan;
Fig. 9 B shows the blade of third embodiment of the present invention axial flow fan and the partial enlarged drawing of ring structure;
Figure 10 A-1 shows that one of axial flow fan of the present invention changes routine generalized section;
Figure 10 A-2 is the ring structure of displayed map 10A-1 and the local enlarged diagram of blade;
Figure 10 B is that another that show axial flow fan of the present invention changes routine generalized section;
Figure 10 C is the routine generalized section of another variation that shows axial flow fan of the present invention;
Figure 11 A shows blade structure plan view of the present invention;
Figure 11 B is the sectional drawing that shows along the observed ring structure with circular cross-section of the hatching AA ' of Figure 11 A;
Figure 11 C is the sectional drawing that shows along the ring structure of the observed rectangular cross-section with unfilled corner of the hatching AA ' of Figure 11 A;
Figure 11 D is the sectional drawing that shows along the observed ring structure with polygonal cross-section of the hatching AA ' of Figure 11 A;
Figure 11 E is the sectional drawing that shows along the ring structure of the observed rectangular cross-section with four jiaos on circular arc of the hatching AA ' of Figure 11 A.
Embodiment
Below with specific embodiment, each form content that the present invention is disclosed is described in detail.
First embodiment
Fig. 4,5A and 5B are the organigrams that shows the axial flow fan 50 of first embodiment of the invention, and axial flow fan 50 is made of housing 51 and blade structure 52.Blade structure 52 is made of several blades 54, a ring structure 53 and several joints 55, and 54 one-tenth in blade is around arrangement, and ring structure 53 is around being arranged at each blade 54.
In the present embodiment, shown in Fig. 5 A and 5B, each blade (blade) 54 of blade structure 52 has an outer periphery 541 (peripheral edge), the point of blade 54 just, and outer periphery 541 has a top 56 (tip).In this figure, the length at top 56 just equals the thickness of ring structure 53, so ring structure 53 is arranged on the top 56 fully.Each joint 55 is that correspondence is arranged on each blade 54, in order to connect the some of ring structure 53 and each blade 54.Can know by figure and to find out that joint 55 is in being to have the stereochemical structure that is similar to cone-shaped on the whole.Each taper connection portion 55 be extend by ring structure 53 towards and be connected in the outer periphery 541 of blade 54, joint 55 is to have bigger section in a side that is linked to ring structure 53, less section is arranged along with the outer periphery 541 of more approaching blade 54, that is joint 55 is toward the outer periphery 541 of blade 54 and the section convergent by ring structure 53.
Present embodiment has one and changes example, top 56 can account at most outer periphery 541 length 1/3rd, so the thickness of ring structure 53 is the length that is less than or equal to top 56.
Fig. 6 shows the sectional drawing of axial flow fan 50 of the present invention.Among this embodiment,, must increase length of blade, so ring structure 53 can strengthen having the intensity than the blade structure 52 of linear leaf in order to increase the area of contact of side inlet air and blade 54.Because blade increases, the shape of housing 51 and runner need to cooperate along with change the length of blade, in order not change runner, therefore the present invention has and is different from existing housing, has a breach 512 on the housing 51, blade 54 can extend near breach 512 places, and the shape of blade and ring structure can the corresponding change according to the shape of breach 512, and ring structure 53 to be parts be positioned at breach 512.Specifically, breach 512 comprises a sidewall 511, has with respect to the horizontal plane an angle q, and angle q changes corresponding to the shape of the outer periphery 541 of blade 54.Owing to have breach 51 on the housing 51, when ring structure 53 is arranged at blade 54 last, can change the link position of ring structure 53 and blade 54, in the present embodiment, ring structure 53 is arranged on the outside of the outer periphery 541 of whole blade 54, approaches breach 512 parts, therefore as shown in Figure 6, ring structure 53 is outstanding towards breach 512 directions by the outer periphery 541 of blade 54, even present embodiment prolongs the length of blade 54, but the intensity of reinforced blade 54 still.
In addition, present embodiment also can increase the air quantity of going into of fan.Wind enters (forward inlet air) the blade structure except being directed downwards according to Y by the top of Fig. 6, in addition by the side of fan in the direction of breach 512, shown in arrow X, wind direction thus enters breach 512 (side direction inlet air), and contacts with the outer periphery 541 of blade 54.Therefore, present embodiment can prolong the length of blade 54, and increases blade 54 intensity by ring structure 53, and then increases the outer periphery 541 of blade 54 and the area of contact of wind.When area of contact was big more, it is then big more that side direction is gone into air quantity, and then improve the forward air output.In addition, when blade structure 52 collocation housings 51 of the present invention use, can not change under the fan overall dimensions, can increase the useful area of blade 54, and enhancing blade structure, and then increase life-span of fan structure, and do not have influence on the effect of fan side inlet air, can increase the allomeric function of fan.
In addition, it should be noted that shown in Fig. 7 A and 7B, in the present embodiment, observe ring structure 53 by hatching AA ' direction, its cross section is a rectangle, can increase the structural strength of ring structure, and the design of the different runners of can arranging in pairs or groups.
Second embodiment
Fig. 8 A and 8B are the blade structure 52-1 schematic representation that shows the axial flow fan of second embodiment of the invention, and the part identical with first embodiment will repeat no more.Because joint 55-1 is in order to connect the part of ring structure 53 and blade 54, and its difference is, in the present embodiment, the position that is connected with blade 54 is the center section part of outer periphery 541, and joint 55-1 is a strip, vertical with ring structure 53 haply, make ring structure 53 and each joint 55-1 form a T type structure haply.
The 3rd embodiment
Fig. 9 A and 9B are the blade structure 52-2 schematic representation that shows the axial flow fan of third embodiment of the invention, and the part identical with first embodiment will repeat no more.And its difference is, in the present embodiment, the position that joint 55-2 is connected with blade 54 is the lowermost end 542 of outer periphery 541, and joint 55-2 is a strip, vertical with ring structure 53 haply, make ring structure 53 and joint 55-2 form a T type structure haply.
Above-mentioned three embodiments' frame structure and blade structure all can cooperate different runners and have several kinds variation example, and still possess compression that the runner designing institute of housing produces and the function of concentrating air quantity.Change in the example one, shown in Figure 10 A-1, housing 51 not necessarily has above-mentioned breach, can keep its original structure, and the ring structure 53 of blade structure can be a part 531 be arranged on the outer periphery 541 of blade 54,532 of another part of ring structure 53 protrude in blade 54, shown in the partial enlarged drawing of Figure 10-2, therefore, ring structure can be half interior half outside, and still be positioned at housing 51.
Change in the example at another, when blade structure collocation housing uses, the length of blade of blade structure and shape can change along with the runner design, and can not influence the usefulness of side direction inlet air, and the compression of still possessing the runner designing institute generation of housing reaches the function of concentrating air quantity.Shown in Figure 10 B, the sidewall 511 of housing 51 has a breach 512, sidewall is that the shape according to blade changes its gradient, and the ring structure 53 of blade structure can be arranged on the inboard of the outer periphery 541 of whole blade 54, approaches the place, axle center of blade structure.
In another variation example, shown in Figure 10 C, can strengthen the breach 512 on the housing 51, and shorten the length of sidewall 511, also increase the outer periphery 541 of blade 54 and the area of contact of wind.Therefore, this embodiment's area of contact is maximum, and then improves side direction and go into air quantity and forward air output.
The sectional shape of the ring structure 53 of blade structure 52 of the present invention can be required and change according to different housings and runner, therefore, except rectangular cross-section as first embodiment, also can have the cross section shown in Figure 11 A to 11E, for example circular, the rectangle that has rectangle, the polygonal of unfilled corner and have four jiaos on circular arc.
Therefore, the present invention utilizes a ring structure to connect every blade, add the joint that strengthens usefulness, connect ring structure 53 and each blade 54, can improve the intensity of whole blade structure 52, in addition, especially when the housing 51 that cooperates is naked frame, can increase Security, avoid being got to by fan because of carelessness and coming to harm, maybe can avoid interrupting the PVC lead.Make outside the fan performance best efficiency, can cooperate different runners designs again and guarantee the side direction inlet air of its fan.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, under the situation that does not break away from spirit of the present invention, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of claims of the present invention in connotation scope of the present invention.
Claims (10)
1. axial flow fan comprises:
One blade structure comprises several blades, arranges circlewise, and each blade has an outer periphery, and this outer periphery has a top;
It is characterized in that also comprising:
One ring structure is connected with this top of each this blade respectively; And
Several joints are arranged at this outer periphery of each this blade, and are connected in this ring structure.
2. axial flow fan as claimed in claim 1 is characterized in that, this top accounts for this outer periphery length
1/3rd, and the thickness of this ring structure is the length that is less than or equal to this top.
3. axial flow fan as claimed in claim 1 is characterized in that, each this joint is an inverted cone shape.
4. axial flow fan as claimed in claim 1 is characterized in that, each this joint is a strip.
5. axial flow fan as claimed in claim 4 is characterized in that, each this joint is perpendicular to this ring structure.
6. axial flow fan as claimed in claim 1 is characterized in that, this outer periphery of each this blade also comprises a bottom, and each this joint is in order to connect this bottom and this ring structure.
7. axial flow fan as claimed in claim 1 is characterized in that, this blade structure, this ring structure and this joint are formed in one.
8. axial flow fan as claimed in claim 1 is characterized in that, this ring structure has a circular cross-section, an elliptic cross-section, a rectangular cross-section or a polygonal cross-section.
9. axial flow fan as claimed in claim 1, it also comprises a housing, and this housing has a breach, and this ring structure is that part is positioned at this breach.
10. axial flow fan as claimed in claim 9 is characterized in that this breach comprises a sidewall, and this sidewall has an angle, and this angle is this outer periphery corresponding to this blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100286397A CN100497952C (en) | 2004-03-03 | 2004-03-03 | Axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100286397A CN100497952C (en) | 2004-03-03 | 2004-03-03 | Axial flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1664377A CN1664377A (en) | 2005-09-07 |
| CN100497952C true CN100497952C (en) | 2009-06-10 |
Family
ID=35035619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100286397A Expired - Lifetime CN100497952C (en) | 2004-03-03 | 2004-03-03 | Axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100497952C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI610027B (en) * | 2016-10-21 | 2018-01-01 | Asia Vital Components Co Ltd | Fan frame with bypass structure and fan thereof |
| US10415570B2 (en) | 2016-11-13 | 2019-09-17 | Asia Vital Components Co., Ltd. | Fan frame body with bypass structure and fan thereof |
-
2004
- 2004-03-03 CN CNB2004100286397A patent/CN100497952C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1664377A (en) | 2005-09-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090610 |