CN202971322U - Hollow blade of axial flow fan - Google Patents
Hollow blade of axial flow fan Download PDFInfo
- Publication number
- CN202971322U CN202971322U CN 201220691600 CN201220691600U CN202971322U CN 202971322 U CN202971322 U CN 202971322U CN 201220691600 CN201220691600 CN 201220691600 CN 201220691600 U CN201220691600 U CN 201220691600U CN 202971322 U CN202971322 U CN 202971322U
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- CN
- China
- Prior art keywords
- hollow blade
- main body
- blade main
- face
- tail end
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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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Abstract
The utility model discloses a hollow blade of an axial flow fan. The hollow blade of the axial flow fan comprises a hollow blade main body and a tail fin, a salix-leaf-shaped opening is formed in the tail end face of the hollow blade main body, the tail fin comprises a flow deflector and a connecting block and is fixed on the opening formed in the tail end face of the hollow blade main body, the tail end face of the hollow blade main body is of an arc shape, the arc shape of the tail end face of the hollow blade main body is parallel with a matched fan tube inner wall, and the connecting block of the tail fin is perpendicularly connected on one side, close to the hollow blade main body, of the flow deflector. Due to the fact that the tail end face of the hollow blade main body is of the arc shape, the arc shape of the tail end face of the hollow blade main body is parallel with the matched fan barrel inner wall, and meanwhile, the connecting block of the tail fin is directly and perpendicularly connected with one side of the flow deflector which can be of the arc shape of the tail end face of the hollow blade main body, the tail fin is suitable for fan tubes with different specifications, and the overall manufacturing cost of the fan is reduced.
Description
Technical field
The utility model relates to a kind of axial-flow blower, is more specifically a kind of hollow blade of axial-flow blower, belongs to the ventilating machinary technical field.
Background technique
Axial-flow blower is the most common a kind of ventilating machinary of present blower fan industry, and impeller is one of critical piece of axial-flow blower.Blade is the critical component that blower fan provides Air Flow.Along with updating of aeration technology, be raising fan operation efficient, reduction noise, economical with materials, and make the easily manufactured of fan blade, in the cooling blower field, begin gradually to use hollow blade.
Due to the end of hollow blade away from petiole, namely the afterbody of blade generally has the opening of willow leaf shape, does not affect the operation of blower fan for the opening that makes afterbody, and existing hollow blade is fixing on the opening of willow leaf shape and blade empennage generally.As disclosed " empennage of blower fan hollow blade " utility model patent ((notification number: CN202165315U) in State Intellectual Property Office's on March 14th, 2012, Introduction of Literatures a kind of empennage of blower fan hollow blade, it has guide plate, the one bossed fixed block of side tool of described guide plate, a side of described fixed block also has contiguous block; The end surface shape of described fixed block is consistent with the shape of hollow blade afterbody opening.Because the end surface shape of fixed block is consistent with the shape of hollow blade afterbody opening, therefore when empennage is installed, contiguous block and fixed block precision are packed in hollow blade afterbody opening, by blade and the boring of contiguous block corresponding position, be screwed into bolt, can be fixed empennage.The empennage of the hollow blade of said structure has increased guide plate, can effectively reduce the noise of blower fan, improves the operational efficiency of blower fan, and makes the beautiful shape of fan blade.But be fixed to the afterbody of blade by contiguous block due to empennage, namely the tortuosity of the side of the close air duct of empennage inboard is fixed, the air duct of such specification size need to be mated by corresponding empennage, otherwise can cause empennage not parallel near side and the air duct inboard of air duct inboard, affect the operational efficiency of blower fan.Therefore the air duct that can not be fit to the different size size due to the empennage of said structure, needs to make the empennage of many air ducts for the different size size in actual production, make the manufacture cost of blower fan increase.
The model utility content
For the problems referred to above, the problem that the utility model quasi-solution is determined is to provide a kind of hollow blade of axial-flow blower, and its empennage can be fit to the air duct of different size size, to reduce the whole manufacture cost of blower fan.
For addressing the above problem, the utility model has adopted following technological scheme: a kind of hollow blade of axial-flow blower, it comprises hollow blade main body and empennage, the tail end face of described hollow blade main body has the opening of willow leaf shape, described empennage comprises guide plate and contiguous block, described empennage is fixed on the opening of tail end face of hollow blade main body, and the tail end face of described hollow blade main body is circular arc, and the circular arc of described hollow blade main body tail end face is parallel with the air duct inwall that mates; The contiguous block of described empennage is vertically connected on guide plate near a side of hollow blade main body.
Described contiguous block is several columns, the aperture distribution of the afterbody willow leaf shape of the corresponding hollow blade main body of the contiguous block of described several columns.Described hollow blade main body is provided with fixing bolt, and described fixing bolt passes respectively the contiguous block of hollow blade main body and empennage.
adopted said structure, the hollow blade of axial-flow blower of the present utility model, because the end face of the afterbody of hollow blade main body is circular arc, the circular arc of hollow blade main body tail end face is parallel with the air duct inwall that mates, simultaneously, the contiguous block of empennage directly is vertically connected on guide plate near a side of hollow blade main body, and the guide plate one bossed fixed block of side tool of the empennage of prior art, contiguous block is to be fixed on fixed block, therefore, compared with prior art, the hollow blade of axial-flow blower of the present utility model, the guide plate of empennage directly abuts against the afterbody of hollow blade main body, add the circular arc of hollow blade main body afterbody, make the guide plate of empennage can be circular arc with the afterbody of hollow blade main body, namely the guide plate of empennage is parallel with the afterbody of hollow blade main body, as long as the afterbody of hollow blade main body is made into parallel with corresponding air duct inboard, the guide plate that just can guarantee empennage is parallel with corresponding air duct inboard.Therefore, the hollow blade of axial-flow blower of the present utility model, its empennage can be fit to the air duct of different size size, has reduced the whole manufacture cost of blower fan.Certainly, it should be noted that here the guide plate of empennage need to have certain bending properties, as nylon etc.
Description of drawings
Fig. 1 is the structural representation of the hollow blade of the utility model axial-flow blower;
Fig. 2 is the sectional structure of Figure 1A-A direction.
In figure: 1-hollow blade main body, 2-empennage, 3-contiguous block, the opening of 4-willow leaf shape, 5-guide plate, 6-fixing bolt.
Embodiment
As shown in Figure 1, the hollow blade of axial-flow blower of the present utility model, it comprises hollow blade main body 1 and empennage 2, the tail end face of described hollow blade main body 1 has the opening 4 of willow leaf shape, described empennage 2 comprises guide plate 5 and contiguous block 3, and described empennage 2 is fixed on the opening 4 of tail end face of hollow blade main body 1.The end face of the afterbody of described hollow blade main body 1 is circular arc, and the circular arc of described hollow blade main body 1 tail end face is parallel with the air duct inwall that mates; The contiguous block 3 of described empennage 2 is vertically connected on guide plate 5 near a side of hollow blade main body 1.
Described contiguous block 3 is several columns, and the opening 4 of the tail end face willow leaf shape of the corresponding hollow blade main body 1 of contiguous block 3 of described several columns distributes.
Described hollow blade main body 1 is provided with fixing bolt 6, and described fixing bolt 6 passes respectively the contiguous block 3 of hollow blade main body 1 and empennage 2.
Claims (3)
1. the hollow blade of an axial-flow blower, it comprises hollow blade main body (1) and empennage (2), the tail end face of described hollow blade main body (1) has the opening (4) of willow leaf shape, described empennage (2) comprises guide plate (5) and contiguous block (3), described empennage (2) is fixed on the opening (4) of tail end face of hollow blade main body (1), the end face that it is characterized in that the afterbody of described hollow blade main body (1) is circular arc, and the circular arc of described hollow blade main body (1) tail end face is parallel with the air duct inwall that mates; The contiguous block (3) of described empennage (2) is vertically connected on guide plate (5) near a side of hollow blade main body (1).
2. the hollow blade of axial-flow blower according to claim 1, is characterized in that described contiguous block (3) is several columns, and the opening (4) of the tail end face willow leaf shape of the corresponding hollow blade main body of the contiguous block of described several columns (3) (1) distributes.
3. the hollow blade of axial-flow blower according to claim 1 and 2, it is characterized in that described hollow blade main body (1) is provided with fixing bolt (6), described fixing bolt (6) passes respectively the contiguous block (3) of hollow blade main body (1) and empennage (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691600 CN202971322U (en) | 2012-12-14 | 2012-12-14 | Hollow blade of axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691600 CN202971322U (en) | 2012-12-14 | 2012-12-14 | Hollow blade of axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971322U true CN202971322U (en) | 2013-06-05 |
Family
ID=48512406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220691600 Expired - Lifetime CN202971322U (en) | 2012-12-14 | 2012-12-14 | Hollow blade of axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763659A (en) * | 2015-04-07 | 2015-07-08 | 马卓娅 | Axial flow fan |
-
2012
- 2012-12-14 CN CN 201220691600 patent/CN202971322U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763659A (en) * | 2015-04-07 | 2015-07-08 | 马卓娅 | Axial flow fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |